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Yang W, Duan Z, Li G, Geng H, Gao Y, Shen Q, Liu L, Wang G, Zha X, Xu C, Zhou P, Song B, Tang D, Wu H, Wei Z, Tang F, He X. Association of lifestyle and occupational exposure factors with human semen quality: a cross-sectional study of 1060 participants. Syst Biol Reprod Med 2024; 70:150-163. [PMID: 38896558 DOI: 10.1080/19396368.2024.2357348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 03/11/2024] [Indexed: 06/21/2024]
Abstract
The incidence of male infertility (MI) is rising annually. However, the lifestyle and occupational exposure factors contributing to MI remain incompletely understood. This study explored the effects of self-reported lifestyle and occupational exposure factors on semen quality. Among 1060 subjects invited to participate, 826 were eligible. The participants' general characteristics, lifestyle, and occupational exposure factors were collected immediately before or after semen evaluation through an online questionnaire. Initially, univariate analysis was used to investigate the relationship between the abovementioned factors and semen quality. The results indicated significant associations between low semen quality and various factors, including age, BMI, infertility type and duration, abstinence time, semen and sperm parameters, smoking, alcohol consumption, irregular sleep habits, and frequent exposure to high temperatures and chemicals at work (p < 0.05). Then, multivariate analysis was conducted to identify factors independently associated with low semen quality. Adjustment for relevant confounders was achieved by including factors with a p-value < 0.25 from univariate analyses as covariates in the binomial and ordered logistic regression models. The results suggested that alcohol consumption was a positive factor for sperm concentration (odds ratio [OR] = 0.60; 95% confidence interval [CI] = 0.36-0.99; p = 0.045). The groups with a BMI ≥ 24 and <28 kg/m2 showed a significant decrease in sperm progressive motility when compared to the reference group (BMI < 24 kg/m2) (OR = 0.63; 95% CI = 0.46-0.87, p = 0.005). In addition, the groups that drank green tea <1 time/week (OR = 1.52, 95% CI = 1.05-2.2) and 1-4 times/week (OR = 1.61, 95% CI = 1.02-2.54) exhibited significantly increased sperm DFI values compared with the group that drank green tea 5-7 times/week. In conclusion, these findings underscore the importance of maintaining a normal weight and regularly consuming green tea for men.
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Affiliation(s)
- Wen Yang
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Anhui, China
- NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), Anhui, China
- Ministry of Education of the People's Republic of China, Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Anhui, China
| | - Zongliu Duan
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Anhui, China
- NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), Anhui, China
- Ministry of Education of the People's Republic of China, Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Anhui, China
| | - Guanjian Li
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Anhui, China
- NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), Anhui, China
- Ministry of Education of the People's Republic of China, Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Anhui, China
| | - Hao Geng
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Anhui, China
- NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), Anhui, China
- Ministry of Education of the People's Republic of China, Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Anhui, China
| | - Yang Gao
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Anhui, China
- NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), Anhui, China
- Ministry of Education of the People's Republic of China, Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Anhui, China
| | - Qunshan Shen
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Anhui, China
- NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), Anhui, China
- Ministry of Education of the People's Republic of China, Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Anhui, China
| | - Liting Liu
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Anhui, China
- NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), Anhui, China
- Ministry of Education of the People's Republic of China, Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Anhui, China
| | - Guanxiong Wang
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Anhui, China
- NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), Anhui, China
- Ministry of Education of the People's Republic of China, Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Anhui, China
| | - Xiaomin Zha
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Anhui, China
- NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), Anhui, China
- Ministry of Education of the People's Republic of China, Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Anhui, China
| | - Chuan Xu
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Anhui, China
- NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), Anhui, China
- Ministry of Education of the People's Republic of China, Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Anhui, China
| | - Ping Zhou
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Anhui, China
- NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), Anhui, China
- Ministry of Education of the People's Republic of China, Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Anhui, China
| | - Bing Song
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Anhui, China
- NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), Anhui, China
- Ministry of Education of the People's Republic of China, Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Anhui, China
| | - Dongdong Tang
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Anhui, China
- NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), Anhui, China
- Ministry of Education of the People's Republic of China, Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Anhui, China
| | - Huan Wu
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Anhui, China
- NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), Anhui, China
- Ministry of Education of the People's Republic of China, Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Anhui, China
| | - Zhaolian Wei
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Anhui, China
- NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), Anhui, China
- Ministry of Education of the People's Republic of China, Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Anhui, China
| | - Feng Tang
- Zhejiang Mater Child and Reproductive Health Center, Hangzhou, Zhejiang, China
| | - Xiaojin He
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Anhui, China
- NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), Anhui, China
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Hagiuda J, Takamatsu K, Nakagawa K. Increased serum creatinine associated with testicular microlithiasis in adult Japanese men: A retrospective cohort study. Andrology 2024; 12:1148-1153. [PMID: 38009817 DOI: 10.1111/andr.13562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 11/14/2023] [Accepted: 11/14/2023] [Indexed: 11/29/2023]
Abstract
BACKGROUND Testicular microlithiasis (TM) is thought to be associated with testicular tumors and impaired spermatogenesis; however, its etiology remains unclear. OBJECTIVES To identify factors, other than testicular function, that are associated with testicular microlithiasis. MATERIALS AND METHODS We enrolled males who underwent ultrasound examination of the scrotum at Tokyo Dental College Ichikawa General Hospital. The patients were categorized into two groups: those with or those without testicular microlithiasis. Background and blood test data were compared between the groups. RESULTS Testicular microlithiasis was observed in 72 of the 828 (8.7%) patients enrolled. Ages ranged from 15 to 87 years (mean age, 40.0 years). A history of germ cell tumor was significantly more prevalent in patients with testicular microlithiasis than in those without (1.3 vs. 16.7%; p < 0.001). Blood test data showed that, patients with testicular microlithiasis had significantly higher serum creatinine levels (0.91 vs. 1.04 mg/dL; p = 0.046) and lower calcium levels (9.4 vs. 9.3 mg/dL; p = 0.031) than those without. Serum creatinine levels (> 1.00 mg/dL) and germ cell tumors were significantly associated with testicular microlithiasis in both univariate and multivariate analyses. The prevalence of testicular microlithiasis increased in patients older than 50 years. Age (> 50 years) was associated with testicular microlithiasis in univariate analysis. The mean body weight tended to be heavier (70.7 vs. 72.2 kg; p = 0.051) and epididymitis was observed more frequently (3.2 vs. 8.3%; p = 0.056) in patients with testicular microlithiasis than in those without. DISCUSSION AND CONCLUSION A history of testicular tumors and elevated serum creatinine levels were associated with testicular microlithiasis. Testicular microlithiasis was observed across all age groups, with a tendency to increase in patients older than 50 years. Patients with testicular microlithiasis were slightly heavier and had a higher prevalence of epididymitis than those without. Our findings suggest that, in addition to testicular dysgenesis, other factors are involved in the development of testicular microlithiasis.
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Affiliation(s)
- Jun Hagiuda
- Department of Urology, Tokyo Dental College Ichikawa General Hospital, Ichikawa, Japan
| | - Kiyoshi Takamatsu
- Department of Obstetrics and Gynecology, Tokyo Dental College Ichikawa General Hospital, Ichikawa, Japan
| | - Ken Nakagawa
- Department of Urology, Tokyo Dental College Ichikawa General Hospital, Ichikawa, Japan
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Lo Giudice A, Asmundo MG, Cimino S, Morgia G, Cocci A, Falcone M, Sokolakis I, Capogrosso P, Morgado A, Russo GI. Effects of Physical Activity on Fertility Parameters: A Meta-Analysis of Randomized Controlled Trials. World J Mens Health 2024; 42:555-562. [PMID: 38164031 DOI: 10.5534/wjmh.230106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 07/19/2023] [Accepted: 08/10/2023] [Indexed: 01/03/2024] Open
Abstract
PURPOSE Augmented adiposity may negatively impact sexual sphere through its metabolic effects and its detrimental impact on reproductive hormones. Moreover, a dysregulated metabolic pathway may promote apoptosis among spermatogenic cells. Based on these premises, a relation between weights loss and ameliorate semen parameters seems beneficial. To investigate if physical activity may affect semen parameters and fertility rate, a systematic literature search on major dataset has been performed. MATERIALS AND METHODS The search terms included: "Assisted reproduction therapies," "fertility," "semen parameters," "sperm parameters," and "physical activity." This analysis was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-analysis guidelines and it was registered on PROSPERO (CRD42023384471). A total of 47 studies have been identified; 1 reference has been eliminated after duplication check. After preliminary screening 32 papers have been excluded. Considering the exclusion criteria, 15 full-text articles were evaluated for eligibility. After a full-text review, six studies published during a span of eight years (2014-2022) have been included in the meta-analysis. Semen parameters, pregnancy and birth rates were investigated. The revised Cochrane risk of bias tool (Rob2) has been used to check the risk of bias. RESULTS The number of patients enrolled in studies ranges from 17 to 521; in the end, a total of 1,637 patients have been enrolled in the study. Fertility parameters investigated were semen quality parameters and pregnancy rates and live births. A statistically significant relationship between physical exercise and sperm concentration (p=0.02), total sperm motility (p<0.01), total sperm count (p<0.01), normal morphology (p<0.01) has been established. Moreover, the study registered a statistically significant association within physical activity and total pregnancy rate (p<0.01) and live birth rate (p<0.01). CONCLUSIONS We demonstrated that physical activity is significantly associated with amelioration of semen parameters and may be crucial in improving or even reverting male infertility.
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Affiliation(s)
- Arturo Lo Giudice
- Department of Surgery, Urology Section, University of Catania, Catania, Italy
| | | | - Sebastiano Cimino
- Department of Surgery, Urology Section, University of Catania, Catania, Italy
| | - Giuseppe Morgia
- Department of Surgery, Urology Section, University of Catania, Catania, Italy
| | - Andrea Cocci
- Department of Urology, University of Florence, Florence, Italy
| | - Marco Falcone
- Urology Section, University of Turin, Molinette Hospital, Turin, Italy
| | - Ioannis Sokolakis
- Department of Urology, Martha-Maria Hospital Nuremberg, Nuremberg, Germany
| | | | - Afonso Morgado
- Department of Urology, Centro Hospitalar Universitário São João, Porto, Portugal
| | - Giorgio Ivan Russo
- Department of Surgery, Urology Section, University of Catania, Catania, Italy.
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Cannarella R, Crafa A, Curto R, Condorelli RA, La Vignera S, Calogero AE. Obesity and male fertility disorders. Mol Aspects Med 2024; 97:101273. [PMID: 38593513 DOI: 10.1016/j.mam.2024.101273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Accepted: 04/03/2024] [Indexed: 04/11/2024]
Abstract
Often associated with obesity, male infertility represents a widespread condition that challenges the wellbeing of the couple. In this article, we provide a comprehensive and critical analysis of studies exploring the association between obesity and male reproductive function, to evaluate the frequency of this association, and establish the effects of increased body weight on conventional and biofunctional sperm parameters and infertility. In an attempt to find possible molecular markers of infertility in obese male patients, the numerous mechanisms responsible for infertility in overweight/obese patients are reviewed in depth. These include obesity-related functional hypogonadism, insulin resistance, hyperinsulinemia, chronic inflammation, adipokines, irisin, gut hormones, gut microbiome, and sperm transcriptome. According to meta-analytic evidence, excessive body weight negatively influences male reproductive health. This can occurr through a broad array of molecular mechanisms. Some of these are not yet fully understood and need to be further elucidated in the future. A better understanding of the effects of metabolic disorders on spermatogenesis and sperm fertilizing capacity is very useful for identifying new diagnostic markers and designing therapeutic strategies for better clinical management of male infertility.
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Affiliation(s)
- Rossella Cannarella
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy; Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Andrea Crafa
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Roberto Curto
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Rosita A Condorelli
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Sandro La Vignera
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Aldo E Calogero
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy.
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Zafar MI, Chen X. Effects of Calorie Restriction on Preserving Male Fertility Particularly in a State of Obesity. Curr Obes Rep 2024; 13:256-274. [PMID: 38489002 DOI: 10.1007/s13679-024-00557-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/22/2024] [Indexed: 03/17/2024]
Abstract
PURPOSE OF REVIEW Highlight the importance of exploring nutritional interventions that could be applied as alternative or supplementary therapeutic strategies to enhance men's fertility. RECENT FINDINGS Lifestyle choices have prompted extensive discussions regarding its implications and applications as a complementary therapy. The growing concern over the decline in sperm quality underscores the urgency of investigating these alternative interventions. Calorie restriction (CR) has emerged as a promising strategy to improve male fertility. The efficacy of CR depends on factors like age, ethnicity and genetics. Clinical studies, such as CALERIE, have shown an improvement in serum testosterone level and sexual drive in men with or without obesity. Additionally, CR has been shown to positively impact sperm count and motility; however, its effects on sperm morphology and DNA fragmentation remain less clear, and the literature has shown discrepancies, mainly due to the nature of technically dependent assessment tools. The review advocates a personalized approach to CR, considering individual health profiles to maximize its benefits. It underscores the need for routine, accessible diagnostic techniques in male reproductive health. It suggests that future research should focus on personalized dietary interventions to improve male fertility and overall well-being in individuals with or without obesity and unravel CR's immediate and lasting effects on semen parameters in men without obesity.
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Affiliation(s)
- Mohammad Ishraq Zafar
- Department of Obstetrics and Gynecology, Center for Reproductive Medicine, The Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, N1 Shangcheng Avenue, Yiwu, Zhejiang, China.
| | - Xiao Chen
- Department of Obstetrics and Gynecology, Center for Reproductive Medicine, The Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, N1 Shangcheng Avenue, Yiwu, Zhejiang, China.
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Esteves SC, Humaidan P, Ubaldi FM, Alviggi C, Antonio L, Barratt CLR, Behre HM, Jørgensen N, Pacey AA, Simoni M, Santi D. APHRODITE criteria: addressing male patients with hypogonadism and/or infertility owing to altered idiopathic testicular function. Reprod Biomed Online 2024; 48:103647. [PMID: 38367592 DOI: 10.1016/j.rbmo.2023.103647] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 10/25/2023] [Accepted: 10/26/2023] [Indexed: 02/19/2024]
Abstract
RESEARCH QUESTION Can a novel classification system of the infertile male - 'APHRODITE' (Addressing male Patients with Hypogonadism and/or infeRtility Owing to altereD, Idiopathic TEsticular function) - stratify different subgroups of male infertility to help scientists to design clinical trials on the hormonal treatment of male infertility, and clinicians to counsel and treat the endocrinological imbalances in men and, ultimately, increase the chances of natural and assisted conception? DESIGN A collaboration between andrologists, reproductive urologists and gynaecologists, with specialization in reproductive medicine and expertise in male infertility, led to the development of the APHRODITE criteria through an iterative consensus process based on clinical patient descriptions and the results of routine laboratory tests, including semen analysis and hormonal testing. RESULTS Five patient groups were delineated according to the APHRODITE criteria; (1) Hypogonadotrophic hypogonadism (acquired and congenital); (2) Idiopathic male infertility with lowered semen analysis parameters, normal serum FSH and normal serum total testosterone concentrations; (3) A hypogonadal state with lowered semen analysis parameters, normal FSH and reduced total testosterone concentrations; (4) Lowered semen analysis parameters, elevated FSH concentrations and reduced or normal total testosterone concentrations; and (5) Unexplained male infertility in the context of unexplained couple infertility. CONCLUSION The APHRODITE criteria offer a novel and standardized patient stratification system for male infertility independent of aetiology and/or altered spermatogenesis, facilitating communication among clinicians, researchers and patients to improve reproductive outcomes following hormonal therapy. APHRODITE is proposed as a basis for future trials of the hormonal treatment of male infertility.
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Affiliation(s)
- Sandro C Esteves
- ANDROFERT, Andrology and Human Reproduction Clinic, Campinas, Brazil.; Department of Surgery (Division of Urology), University of Campinas (UNICAMP), Campinas, Brazil.; Faculty of Health, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark..
| | - Peter Humaidan
- Fertility Clinic at Skive Regional Hospital, Faculty of Health, Aarhus University, Aarhus, Denmark
| | - Filippo M Ubaldi
- IVIRMA Global Research Alliance, GENERA, Clinica Valle Giulia, Rome, Italy
| | - Carlo Alviggi
- Department of Public Health, University of Naples Federico II, Naples, Italy
| | - Leen Antonio
- Department of Endocrinology, Universitair Ziekenhuis Leuven, Leuven, Belgium
| | | | - Hermann M Behre
- Center for Reproductive Medicine and Andrology, University Medicine Halle, Halle, Germany
| | - Niels Jørgensen
- Department of Growth and Reproduction and International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Allan A Pacey
- Faculty of Biology, Medicine and Health, Core Technology Facility, University of Manchester, Manchester, UK
| | - Manuela Simoni
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy.; Unit of Endocrinology, Department of Medical Specialties, Azienda Ospedaliero - Universitaria of Modena, Modena, Italy.; Unit of Andrology and Sexual Medicine of the Unit of Endocrinology, Department of Medical Specialties, Azienda Ospedaliero - Universitaria of Modena, Modena, Italy
| | - Daniele Santi
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy.; Unit of Endocrinology, Department of Medical Specialties, Azienda Ospedaliero - Universitaria of Modena, Modena, Italy.; Unit of Andrology and Sexual Medicine of the Unit of Endocrinology, Department of Medical Specialties, Azienda Ospedaliero - Universitaria of Modena, Modena, Italy
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Alfaiate MI, Tavares RS, Ramalho-Santos J. A ripple effect? The impact of obesity on sperm quality and function. Reprod Fertil Dev 2024; 36:RD23215. [PMID: 38589340 DOI: 10.1071/rd23215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 03/15/2024] [Indexed: 04/10/2024] Open
Abstract
Infertility affects approximately 15% of couples trying to conceive. Male-related causes account for roughly 50% of cases, with obesity emerging as a possible significant factor. Obesity, defined as a body mass index of 30.0 or higher, has become a widespread epidemic associated with numerous health issues, including a decrease of fertility. This review discusses the relationship between obesity and male infertility, particularly focusing on sperm quality and function. An overview of the literature suggests that obesity may influence the male reproductive system via disruptions in hormonal profiles, oxidative stress, and inflammation, leading to changes in sperm parameters. Several studies have discussed if obesity causes a decrease in sperm concentration, motility, and normal morphology, so far without a consensus being reached. However, available evidence suggests an impairment of sperm function in obese men, due to an increase in DNA damage and oxidative stress, impaired mitochondrial function and acrosome reaction in response to progesterone. Finally, the relationship between obesity and assisted reproductive technologies outcomes remains debatable, with conflicting evidence regarding the influence on fertilisation, pregnancy, and live birth rates. Therefore, the actual impact of obesity on human spermatozoa still needs to be clarified, due to the multiple factors potentially in play.
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Affiliation(s)
- Maria Inês Alfaiate
- University of Coimbra, CNC-UC, Center for Neuroscience and Cell Biology, CIBB, Coimbra, Portugal; and University of Coimbra, Institute for Interdisciplinary Research, Doctoral Programme in Experimental Biology and Biomedicine (PDBEB), Coimbra, Portugal
| | - Renata Santos Tavares
- University of Coimbra, CNC-UC, Center for Neuroscience and Cell Biology, CIBB, Coimbra, Portugal; and Department of Life Sciences, University of Coimbra, Coimbra 3000-456, Portugal
| | - João Ramalho-Santos
- University of Coimbra, CNC-UC, Center for Neuroscience and Cell Biology, CIBB, Coimbra, Portugal; and Department of Life Sciences, University of Coimbra, Coimbra 3000-456, Portugal
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Wang C, Yu Q, Chu T, Wang F, Dong F, Xin H, Wang D, Liu Y, Zhai J. Relationship of environmental exposure temperature and temperature extremes on sperm DNA fragmentation index in men with different BMI values and the indirect effect of DNA fragmentation index on semen parameters. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 916:170292. [PMID: 38278223 DOI: 10.1016/j.scitotenv.2024.170292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 01/17/2024] [Accepted: 01/17/2024] [Indexed: 01/28/2024]
Abstract
Prior studies have established a significant correlation between the DNA fragmentation index (DFI) and infertility. Additionally, certain investigations suggest that environmental exposure may serve as an etiological factor impacting semen quality. This study aimed to explore the impact of season, ambient temperature, and weather extremes on the DFI of sperm, along with other relevant parameters. Furthermore, it sought to assess how ambient temperature affects the DFI of sperm and other semen parameters in populations with varying BMI values. Additionally, the study analyzed the transient indirect effect of DFI on sperm parameters. This retrospective study analyzed semen samples from 11,877 men, selected based on female factor considerations, spanning from January 2016 to December 2021. Participants were grouped according to the season of semen collection. The results showed that samples collected in summer had a lower semen volume and sperm motility, while those collected in autumn had a lower DFI. We analyzed the exposure-response ratio between environmental exposure temperature and semen parameters using a generalized additive model. Results showed that the curve of the exposure-response relationship was U-shaped or inverted U-shaped; when the air temperature exposure was below the threshold, for each degree of temperature increase, the total sperm motility, sperm concentration, and progressive motility increased by 0.16 %, 0.29 × 10 (Levine, 1999)/ml and 0.14 %, respectively, while the DFI and inactivity rate decreased by 0.078 % and 0.15 %, respectively. When the air temperature exposure exceeded the threshold, for each degree of temperature increase, the sperm concentration, total sperm motility, semen volume and progressive motility decreased by 0.42 × 10 (Levine, 1999)/ml, 0.11 %, 0.0078 ml and 0.15 %, respectively, while the DFI and inactivity rate increased by 0.13 % and 0.12 %, respectively. Extremely cold weather during spermatogenesis was positively correlated with DFI, and extremely hot weather was negatively correlated with sperm motility. Subgroup analysis revealed that individuals classified as overweight / obese exhibited more pronounced changes in sperm parameters and the DFI in response to variations in environmental exposure temperature compared to those with a normal BMI. In the analysis of the relationship between DFI and sperm parameters, the results showed an inverted U-shape relationship between DFI and semen volume, and a negative correlation between DFI and sperm concentration and sperm motility. And we found that ambient temperature affects sperm parameters through DFI at low as well as average temperatures, whereas at high temperatures this indirect effect is no longer present.
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Affiliation(s)
- Chen Wang
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China; Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China; Henan Provincial Obstetrical and Gynecological Diseases (Reproductive Medicine) Clinical Research Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China
| | - Qiwei Yu
- Faculty of Geographical Science, Beijing Normal University, Beijing, China
| | - Ting Chu
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China; Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China; Henan Provincial Obstetrical and Gynecological Diseases (Reproductive Medicine) Clinical Research Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China
| | - Fang Wang
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China; Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China; Henan Provincial Obstetrical and Gynecological Diseases (Reproductive Medicine) Clinical Research Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China
| | - Fangli Dong
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China; Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China; Henan Provincial Obstetrical and Gynecological Diseases (Reproductive Medicine) Clinical Research Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China
| | - Hang Xin
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China; Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China; Henan Provincial Obstetrical and Gynecological Diseases (Reproductive Medicine) Clinical Research Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China
| | - Di Wang
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China; Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China; Henan Provincial Obstetrical and Gynecological Diseases (Reproductive Medicine) Clinical Research Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China
| | - Yaping Liu
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China; Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China; Henan Provincial Obstetrical and Gynecological Diseases (Reproductive Medicine) Clinical Research Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China
| | - Jun Zhai
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China; Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China; Henan Provincial Obstetrical and Gynecological Diseases (Reproductive Medicine) Clinical Research Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China.
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9
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Nie P, Wen S, Wang M, Xu H. Exploration of Lactiplantibacillus plantarum P101 ameliorated the alcohol-induced testicular dysfunction based on metabolome analysis. Food Chem Toxicol 2024; 185:114463. [PMID: 38244668 DOI: 10.1016/j.fct.2024.114463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/22/2023] [Accepted: 01/17/2024] [Indexed: 01/22/2024]
Abstract
The decline in male sperm quality caused by multiple factors has become a widespread concern. Alcohol excessive consumption is one of the factors that induce testicular dysfunction. Testicular dysfunction caused by alcohol abuse is related to oxidative stress and inflammation. Probiotics can ameliorate alcohol-induced testicular dysfunction. However, the specific mechanism is not explicit. This study aimed to elucidate the underlying mechanism by which Lactiplantibacillus plantarum P101 ameliorates the alcohol-induced testicular dysfunction. The model of alcohol-induced testicular dysfunction in C57B/6 male mice was established according to the National Institute on Alcohol Abuse and Alcoholism, and Lactiplantibacillus plantarum P101 supplementation was orally administered to mice during the experiment. The results showed that Lactiplantibacillus plantarum P101 promoted androgen production, reduced testis inflammation, and improved testis antioxidant capacity, thereby improving sperm quality and sperm motility and ultimately ameliorating alcohol-induced testicular disorder. Three key metabolite pathways and six key metabolites were identified by metabolome analysis.
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Affiliation(s)
- Penghui Nie
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, 330047, PR China
| | - Siyue Wen
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, 330047, PR China
| | - Mengqi Wang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, 330047, PR China
| | - Hengyi Xu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, 330047, PR China; International Institute of Food Innovation Co., Ltd., Nanchang University, Nanchang, 330200, PR China.
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10
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Peel A, Mathews N, Vincent AD, Jesudason D, Wittert G, McPherson NO. Impact of bariatric surgery, lifestyle change, and pharmacotherapy on fertility in men with obesity: a systematic review protocol. JBI Evid Synth 2024:02174543-990000000-00278. [PMID: 38385455 DOI: 10.11124/jbies-23-00195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
OBJECTIVE This review will determine whether various health interventions designed to reduce weight (lifestyle change, bariatric surgery, pharmacotherapy) in men with obesity are associated with improved fertility markers. The review will also establish whether the degree of weight loss achieved through these methods is associated with improvement. BACKGROUND Current preconception guidelines provide limited information for men with obesity. Small studies implementing lifestyle changes in men are associated with improvement in sperm quality, whereas bariatric surgery has not been associated with improvements in sperm quality. Determining the benefit of different interventions and the relationship to weight lost is necessary to optimize male fertility. INCLUSION CRITERIA The population will be men < 50 years who are either overweight (BMI > 25 kg/m2) or obese (BMI > 30 kg/m2). The exposure of interest will be an intervention undertaken to improve health or reduce weight, categorized as lifestyle change, bariatric surgery, or pharmacotherapy. Outcomes will include time to conception, fecundity rate, assisted reproduction outcomes, and semen quality measures. Secondary analysis will determine whether degree of weight loss achieved is associated with degree of improvement. METHODS This review will follow the JBI methodology for systematic reviews of etiology and risk. Databases to be searched will include PubMed, Embase (Ovid), Cochrane Central Register of Controlled Trials, Web of Science, and Scopus. Articles not translated into English will be excluded. Methodological quality will be assessed using the JBI critical appraisal tools. Data will be extracted using a standardized tool developed by the reviewers. Statistical meta-analysis will be performed where possible to synthesize outcomes of similar methods. REVIEW REGISTRATION NUMBER PROSPERO CRD 42022349665.
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Affiliation(s)
- Andrew Peel
- Freemasons Centre for Male Health and Wellbeing, University of Adelaide and South Australian Health and Medical Research Institute, Adelaide, SA, Australia
- Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
- Adelaide Health and Medical School, School of Biomedicine, Discipline of Reproduction and Development, University of Adelaide, Adelaide, SA, Australia
| | - Nicola Mathews
- Freemasons Centre for Male Health and Wellbeing, University of Adelaide and South Australian Health and Medical Research Institute, Adelaide, SA, Australia
- Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
- Adelaide Health and Medical School, School of Biomedicine, Discipline of Reproduction and Development, University of Adelaide, Adelaide, SA, Australia
| | - Andrew D Vincent
- Adelaide Health and Medical School, School of Biomedicine, Discipline of Reproduction and Development, University of Adelaide, Adelaide, SA, Australia
| | | | - Gary Wittert
- Freemasons Centre for Male Health and Wellbeing, University of Adelaide and South Australian Health and Medical Research Institute, Adelaide, SA, Australia
| | - Nicole O McPherson
- Freemasons Centre for Male Health and Wellbeing, University of Adelaide and South Australian Health and Medical Research Institute, Adelaide, SA, Australia
- Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
- Adelaide Health and Medical School, School of Biomedicine, Discipline of Reproduction and Development, University of Adelaide, Adelaide, SA, Australia
- Repromed, Adelaide, SA, Australia
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11
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Maitin-Shepard M, Werner EF, Feig LA, Chavarro JE, Mumford SL, Wylie B, Rando OJ, Gaskins AJ, Sakkas D, Arora M, Kudesia R, Lujan ME, Braun J, Mozaffarian D. Food, nutrition, and fertility: from soil to fork. Am J Clin Nutr 2024; 119:578-589. [PMID: 38101699 DOI: 10.1016/j.ajcnut.2023.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 11/22/2023] [Accepted: 12/11/2023] [Indexed: 12/17/2023] Open
Abstract
Food and nutrition-related factors, including foods and nutrients consumed, dietary patterns, use of dietary supplements, adiposity, and exposure to food-related environmental contaminants, have the potential to impact semen quality and male and female fertility; obstetric, fetal, and birth outcomes; and the health of future generations, but gaps in evidence remain. On 9 November 2022, Tufts University's Friedman School of Nutrition Science and Policy and the school's Food and Nutrition Innovation Institute hosted a 1-d meeting to explore the evidence and evidence gaps regarding the relationships between food, nutrition, and fertility. Topics addressed included male fertility, female fertility and gestation, and intergenerational effects. This meeting report summarizes the presentations and deliberations from the meeting. Regarding male fertility, a positive association exists with a healthy dietary pattern, with high-quality evidence for semen quality and lower quality evidence for clinical outcomes. Folic acid and zinc supplementation have been found to not impact male fertility. In females, body weight status and other nutrition-related factors are linked to nearly half of all ovulation disorders, a leading cause of female infertility. Females with obesity have worse fertility treatment, pregnancy-related, and birth outcomes. Environmental contaminants found in food, water, or its packaging, including lead, perfluorinated alkyl substances, phthalates, and phenols, adversely impact female reproductive outcomes. Epigenetic research has found that maternal and paternal dietary-related factors can impact outcomes for future generations. Priority evidence gaps identified by meeting participants relate to the effects of nutrition and dietary patterns on fertility, gaps in communication regarding fertility optimization through changes in nutritional and environmental exposures, and interventions impacting germ cell mechanisms through dietary effects. Participants developed research proposals to address the priority evidence gaps. The workshop findings serve as a foundation for future prioritization of scientific research to address evidence gaps related to food, nutrition, and fertility.
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Affiliation(s)
| | - Erika F Werner
- Tufts University School of Medicine, Boston, MA, United States
| | - Larry A Feig
- Department of Developmental, Molecular, and Chemical Biology, Tufts University School of Medicine, Boston, MA, United States
| | - Jorge E Chavarro
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, United States
| | - Sunni L Mumford
- Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania, Philadelphia, PA, United States
| | - Blair Wylie
- Collaborative for Women's Environmental Health, Columbia University, New York, NY, United States
| | - Oliver J Rando
- Department of Biochemistry and Molecular Biotechnology, University of Massachusetts Chan Medical School, Worcester, MA, United States
| | - Audrey J Gaskins
- Department of Epidemiology, Emory University Rollins School of Public Health, Atlanta, GA, United States
| | | | - Manish Arora
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | | | - Marla E Lujan
- Division of Nutritional Sciences, Cornell University, Ithaca, NY, United States
| | - Joseph Braun
- Department of Epidemiology, Brown University, Providence, RI, United States
| | - Dariush Mozaffarian
- Tufts University School of Medicine, Boston, MA, United States; Food is Medicine Institute, Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, United States.
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12
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Stirland I, Soares MR, Furtado CLM, Dos Reis RM, Aston KI, Smith RP, Jenkins TG. An assessment of alterations to human sperm methylation patterns in coronavirus disease 2019 infected and healthy control males. F&S SCIENCE 2024; 5:2-15. [PMID: 38070681 DOI: 10.1016/j.xfss.2023.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 12/05/2023] [Accepted: 12/05/2023] [Indexed: 01/06/2024]
Abstract
OBJECTIVE To determine whether severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection affects male reproductive health, considering the many potential factors that contribute to declines in male fertility on a semiglobal scale. DESIGN In total, 64 human semen samples-32 treatment and 32 control-were laboratory processed and bioinformatically analyzed to assess differences in DNA methylation patterns. Implementing multiple bioinformatic tools, the analyses conducted will elicit between-group differences with respect to epigenetic age, epigenetic instability, semiglobal, and regional methylation, in addition to methylation patterns as a function of time since infection. SETTING University hospital. PATIENTS The study cohort of 64 individuals was drawn from a larger population of 94 volunteer participants recruited at the Human Reproduction Center at the Clinical Hospital of the Ribeirao Preto Medical School-University of São Paulo between June 2021 and January 2022 as well as in accordance with the ethical guidelines established by the Declaration of Helsinki. INTERVENTION Exposure to SARS-CoV-2. MAIN OUTCOME MEASURE(S) Effects on male reproductive health were reported as differences in DNA methylation measured using an array. Mean β values at key regulatory loci for human spermatocytes were analyzed and compared between groups. Further analysis of β values using epigenetic age, instability, semiglobal, and regional methylation tools provided an analysis with substantial breadth and depth. RESULTS In all analyses, there were no differences between groups. Considering these results, it can be inferred that infection with SARS-CoV-2 does not alter the epigenome of human spermatocytes in significant and/or persistent ways. Tangentially, these data also suggest that human male reproductive health is minimally altered by the virus, or that it is altered in a way that is independent of epigenetic programming. CONCLUSION Infection with SARS-CoV-2 has been reportedly associated with alterations in male fertility. This study asserts that such alterations do not have an epigenetic basis but are likely a result of concomitant symptomatology, i.e., fever and inflammation. Across the multiple bioinformatic analyses conducted, the results of this test did not detect any differences in DNA methylation patterns between coronavirus disease 2019 and noncoronavirus disease semen donor groups.
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Affiliation(s)
- Isaac Stirland
- Department of Cell Biology and Physiology, Brigham Young University, Provo, Utah
| | - Murilo Racy Soares
- Department of Obstetrics and Gynecology, Ribeirao Preto Medical School University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Cristiana Libardi Miranda Furtado
- Department of Obstetrics and Gynecology, Ribeirao Preto Medical School University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil; University of Fortaleza, Experimental Biology Center, Fortaleza, Ceara, Brazil
| | - Rosana Maria Dos Reis
- Department of Obstetrics and Gynecology, Ribeirao Preto Medical School University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Kenneth I Aston
- Department of Surgery, University of Utah School of Medicine, Salt Lake City, Utah
| | - R Parker Smith
- Department of Cell Biology and Physiology, Brigham Young University, Provo, Utah
| | - Timothy G Jenkins
- Department of Cell Biology and Physiology, Brigham Young University, Provo, Utah; Department of Surgery, University of Utah School of Medicine, Salt Lake City, Utah.
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13
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Sharma A, Papanikolaou N, Abou Sherif S, Dimakopolou A, Thaventhiran T, Go C, Holtermann Entwistle O, Brown A, Luo R, Jha R, Prakash A, Khalifa D, Lewis H, Ramaraju S, Leeds AR, Chahal H, Purkayastha S, Henkel R, Minhas S, Frost G, Dhillo WS, Jayasena CN. Improvements in Sperm Motility Following Low- or High-Intensity Dietary Interventions in Men With Obesity. J Clin Endocrinol Metab 2024; 109:449-460. [PMID: 37656983 PMCID: PMC10795917 DOI: 10.1210/clinem/dgad523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 08/24/2023] [Accepted: 08/29/2023] [Indexed: 09/03/2023]
Abstract
INTRODUCTION Obesity increases risks of male infertility, but bariatric surgery does not improve semen quality. Recent uncontrolled studies suggest that a low-energy diet (LED) improves semen quality. Further evaluation within a randomized, controlled setting is warranted. METHODS Men with obesity (18-60 years) with normal sperm concentration (normal count) (n = 24) or oligozoospermia (n = 43) were randomized 1:1 to either 800 kcal/day LED for 16 weeks or control, brief dietary intervention (BDI) with 16 weeks' observation. Semen parameters were compared at baseline and 16 weeks. RESULTS Mean age of men with normal count was 39.4 ± 6.4 in BDI and 40.2 ± 9.6 years in the LED group. Mean age of men with oligozoospermia was 39.5 ± 7.5 in BDI and 37.7 ± 6.6 years in the LED group. LED caused more weight loss than BDI in men with normal count (14.4 vs 6.3 kg; P < .001) and men with oligozoospermia (17.6 vs 1.8 kg; P < .001). Compared with baseline, in men with normal count total motility (TM) increased 48 ± 17% to 60 ± 10% (P < .05) after LED, and 52 ± 8% to 61 ± 6% (P < .0001) after BDI; progressive motility (PM) increased 41 ± 16% to 53 ± 10% (P < .05) after LED, and 45 ± 8% to 54 ± 65% (P < .001) after BDI. In men with oligozoospermia compared with baseline, TM increased 35% [26] to 52% [16] (P < .05) after LED, and 43% [28] to 50% [23] (P = .0587) after BDI; PM increased 29% [23] to 46% [18] (P < .05) after LED, and 33% [25] to 44% [25] (P < .05) after BDI. No differences in postintervention TM or PM were observed between LED and BDI groups in men with normal count or oligozoospermia. CONCLUSION LED or BDI may be sufficient to improve sperm motility in men with obesity. The effects of paternal dietary intervention on fertility outcomes requires investigation.
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Affiliation(s)
- Aditi Sharma
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Nikoleta Papanikolaou
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Sara Abou Sherif
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Anastasia Dimakopolou
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Thilipan Thaventhiran
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Cara Go
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | | | - Adrian Brown
- Centre for Obesity Research, University College London, London, UK
| | - Rong Luo
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Rama Jha
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Anavi Prakash
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Dalia Khalifa
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Hannah Lewis
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Sruthi Ramaraju
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Anthony R Leeds
- Clinical Research Unit, Parker Institute, Frederiksberg Hospital, Copenhagen, Denmark
| | - Harvinder Chahal
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Sanjay Purkayastha
- Department of General and Bariatric Surgery, Imperial College Healthcare NHS Trust, St. Mary's Hospital, London, UK
| | - Ralf Henkel
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Sukhbinder Minhas
- Department of Urology, Imperial College Healthcare NHS Trust, Charing Cross Hospital, Fulham Palace Road, Hammersmith, London, UK
| | - Gary Frost
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Waljit S Dhillo
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
| | - Channa N Jayasena
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W12 0NN, UK
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14
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Gaml-Sørensen A, Thomsen AH, Tøttenborg SS, Brix N, Hougaard KS, Toft G, Håberg SE, Myrskylä M, Bonde JP, Ramlau-Hansen CH. Maternal pre-pregnancy BMI and reproductive health in adult sons: a study in the Danish National Birth Cohort. Hum Reprod 2024; 39:219-231. [PMID: 37935951 PMCID: PMC10767916 DOI: 10.1093/humrep/dead230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 10/12/2023] [Indexed: 11/09/2023] Open
Abstract
STUDY QUESTION Is maternal pre-pregnancy BMI associated with semen quality, testes volume, and reproductive hormone levels in sons? SUMMARY ANSWER Maternal pre-pregnancy BMI was associated with an altered reproductive hormone profile in young adult sons, characterized by higher levels of oestradiol, LH, and free androgen index (FAI) and lower levels of sex hormone-binding globulin (SHBG) in sons born of mothers with pre-pregnancy overweight and obesity. WHAT IS KNOWN ALREADY Evidence suggests that maternal pre-pregnancy BMI may influence reproductive health later in life. Only one pilot study has investigated the association between maternal pre-pregnancy BMI and reproductive health outcomes in sons, suggesting that a high BMI was associated with impaired reproductive function in the adult sons. STUDY DESIGN, SIZE, DURATION A population-based follow-up study of 1058 young men from the Fetal Programming of Semen Quality (FEPOS) cohort nested within the Danish National Birth Cohort (DNBC), 1998-2019, was carried out. PARTICIPANTS/MATERIALS, SETTING, METHODS In total, 1058 adult sons (median age 19 years, 2 months), born 1998-2000 by mothers included in the DNBC, participated in FEPOS. At a clinical examination, they provided a semen and blood sample, measured their testes volume, and had height and weight measured. Maternal pre-pregnancy BMI was obtained by self-report in early pregnancy. Semen characteristics, testes volume, and reproductive hormone levels were analysed according to maternal pre-pregnancy BMI categories and as restricted cubic splines using negative binomial and ordinary least square regression models. Mediation analyses examined potential mediation by the sons' birthweight, pubertal timing, fat mass, and BMI. Additional analyses investigated the role of paternal BMI in the potential associations between maternal BMI and reproductive health outcomes. MAIN RESULTS AND THE ROLE OF CHANCE We found no consistent associations between maternal pre-pregnancy BMI and semen characteristics or testes volume. Sons of mothers with higher pre-pregnancy BMI had higher oestradiol and lower SHBG levels, both in a dose-dependent manner. Sons of mothers with pre-pregnancy obesity (≥30 kg/m2) had higher LH levels and a higher FAI than sons born by mothers with normal pre-pregnancy BMI (18.5-24.9 kg/m2). The mediation analyses suggested that the effect of maternal pre-pregnancy BMI on higher levels of oestrogen, LH, and FAI was partly mediated by the sons' birthweight, in addition to adult fat mass and BMI measured at the clinical examination, whereas most of the effect on lower levels of SHBG was primarily mediated by the sons' own fat mass and BMI. Paternal BMI was not a strong confounder of the associations in this study. LIMITATIONS, REASONS FOR CAUTION This study was based in a population-based cohort with a low prevalence of overweight and obesity in both mothers and adult sons. Some men (10%) had blood for reproductive hormone assessment drawn in the evening. While several potential confounding factors were accounted for, this study's inherent risk of residual and unmeasured confounding precludes provision of causal estimates. Therefore, caution should be given when interpreting the causal effect of maternal BMI on sons' reproductive health. WIDER IMPLICATIONS OF THE FINDINGS Given the widespread occurrence of overweight and obesity among pregnant women, it is imperative to thoroughly examine the potential consequences for reproductive hormone levels in adult sons. The potential effects of maternal pre-pregnancy obesity on sons' reproductive hormone profile may potentially be partly avoided by the prevention of overweight and obesity in the sons. STUDY FUNDING/COMPETING INTEREST(S) The project was funded by the Lundbeck Foundation (R170-2014-855), the Capital Region of Denmark, Medical doctor Sofus Carl Emil Friis and spouse Olga Doris Friis's Grant, Axel Muusfeldt's Foundation (2016-491), AP Møller Foundation (16-37), the Health Foundation, Dagmar Marshall's Fond, Aarhus University, Independent Research Fund Denmark (9039-00128B), and the European Union (ERC, BIOSFER, 101071773). Views and opinions expressed are, however, those of the authors only and do not necessarily reflect those of the European Union or the European Research Council. Neither the European Union nor the granting authority can be held responsible. The authors declare that they have no conflict of interest. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- Anne Gaml-Sørensen
- Department of Public Health, Research Unit for Epidemiology, Aarhus University, Aarhus, Denmark
| | - Anne Hjorth Thomsen
- Department of Public Health, Research Unit for Epidemiology, Aarhus University, Aarhus, Denmark
| | - Sandra Søgaard Tøttenborg
- Department of Occupational and Environmental Medicine, Copenhagen University Hospital—Bispebjerg and Frederiksberg, Copenhagen, Denmark
- Department of Public Health, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Nis Brix
- Department of Public Health, Research Unit for Epidemiology, Aarhus University, Aarhus, Denmark
- Department of Clinical Genetics, Aarhus University Hospital, Aarhus, Denmark
| | - Karin Sørig Hougaard
- Department of Public Health, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
- National Research Centre for Working Environment, Copenhagen, Denmark
| | - Gunnar Toft
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus, Denmark
| | - Siri Eldevik Håberg
- Centre for Fertility and Health, Norwegian Institute of Public Health, Oslo, Norway
| | - Mikko Myrskylä
- Max Planck Institute for Demographic Research, Rostock, Germany
- Center for Social Data Science and Population Research Unit, University of Helsinki, Helsinki, Finland
- Max Planck—University of Helsinki Center for Social Inequalities in Population Health, Rostock, Germany
| | - Jens Peter Bonde
- Department of Occupational and Environmental Medicine, Copenhagen University Hospital—Bispebjerg and Frederiksberg, Copenhagen, Denmark
- Department of Public Health, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
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15
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Zhang M, Liu XY, Deng YL, Liu C, Zeng JY, Miao Y, Wu Y, Li CR, Li YJ, Liu AX, Zhu JQ, Zeng Q. Associations between urinary biomarkers of exposure to disinfection byproducts and semen parameters: A repeated measures analysis. JOURNAL OF HAZARDOUS MATERIALS 2024; 461:132638. [PMID: 37774606 DOI: 10.1016/j.jhazmat.2023.132638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 09/22/2023] [Accepted: 09/25/2023] [Indexed: 10/01/2023]
Abstract
Toxicological studies have demonstrated that disinfection byproducts (DBPs), particularly haloacetic acids, cause testicular toxicity. However, evidence from human studies is sparse and inconclusive. This study included 1230 reproductive-aged men from the Tongji Reproductive and Environmental (TREE) cohort to investigate the associations between repeated measures of DBP exposures and semen parameters. Urinary dichloroacetic acid (DCAA) and trichloroacetic acid (TCAA) as biomarkers of DBP exposures and semen parameters in up to three samples from each man were assessed. The linear mixed effect models were applied to explore the associations between urinary biomarkers of DBP exposures and semen parameters. We found inverse associations of urinary DCAA with sperm count, progressive motility, and total motility (e.g., -14.86%; 95% CI: -19.33%, -10.15% in sperm total motility for the highest vs. lowest quartiles; all P for trends < 0.05). Moreover, urinary TCAA modeled as a continuous variable was negatively associated with sperm progressive motility and total motility, while the inverse associations across increasing urinary TCAA quartiles were seen among leaner men (BMI < 25 kg/m2). Exposure to DBPs reflected by urinary DCAA and TCAA was inversely associated with sperm motility and such effects were more evident among leaner men.
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Affiliation(s)
- Min Zhang
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China
| | - Xiao-Ying Liu
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China
| | - Yan-Ling Deng
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China
| | - Chong Liu
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China
| | - Jia-Yue Zeng
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China
| | - Yu Miao
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China
| | - Yang Wu
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China
| | - Cheng-Ru Li
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China
| | - Yang-Juan Li
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China
| | - A-Xue Liu
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China
| | - Jin-Qin Zhu
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China
| | - Qiang Zeng
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China.
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16
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Crean AJ, Pulpitel TJ, Pini T, Rickard JP, de Graaf SP, Senior AM, Simpson SJ, Wali JA. Low-Fat, High-Carbohydrate Diets Reduce Body Weight and Sperm Count but Increase Sperm Motility in Mice. J Nutr 2024; 154:60-68. [PMID: 37984745 DOI: 10.1016/j.tjnut.2023.11.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 10/19/2023] [Accepted: 11/08/2023] [Indexed: 11/22/2023] Open
Abstract
BACKGROUND Male reproduction is impacted by both over- and under-nutrition, demonstrated by animal studies using high-fat and low-protein dietary interventions. Little is known about the impacts of low-fat, high-carb diets and types of dietary carbohydrates on sperm traits. OBJECTIVES Using a nutritional geometry approach, we investigated the effects of partially or completely substituting glucose for fructose in isocaloric diets containing either 10%, 20%, or 30% fat (by energy) on sperm traits in mice. METHODS Male C57BL/6J mice were fed 1 of 15 experimental diets for 18 wk starting from 8 wk of age. Reproductive organs were then harvested, and sperm concentration, motility, and velocity were measured using Computer-Assisted Sperm Analysis. RESULTS Increasing dietary fat from 10% to 30% while maintaining energy density at 14.3 kJ/g and protein content at 20% resulted in increased body weight and sperm production but reduced the percentage of motile sperm. Body weight and seminal vesicle weight were maximized on diets containing a 50:50 mix of fructose and glucose, but carbohydrate type had few significant impacts on epididymal sperm traits. CONCLUSIONS The opposing impacts of dietary fat on mouse sperm quantity and quality observed suggest that male fertility may not be optimized by a single diet; rather, context-specific dietary guidelines targeted to specific concerns in semen quality may prove useful in treating male infertility.
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Affiliation(s)
- Angela J Crean
- The University of Sydney, Charles Perkins Centre, New South Wales, Australia; The University of Sydney, School of Life and Environmental Sciences, New South Wales, Australia.
| | - Tamara J Pulpitel
- The University of Sydney, Charles Perkins Centre, New South Wales, Australia; The University of Sydney, School of Life and Environmental Sciences, New South Wales, Australia
| | - Taylor Pini
- The University of Sydney, Charles Perkins Centre, New South Wales, Australia; The University of Queensland, School of Veterinary Science, Queensland, Australia
| | - Jessica P Rickard
- The University of Sydney, School of Life and Environmental Sciences, New South Wales, Australia
| | - Simon P de Graaf
- The University of Sydney, School of Life and Environmental Sciences, New South Wales, Australia
| | - Alistair M Senior
- The University of Sydney, Charles Perkins Centre, New South Wales, Australia; The University of Sydney, School of Life and Environmental Sciences, New South Wales, Australia
| | - Stephen J Simpson
- The University of Sydney, Charles Perkins Centre, New South Wales, Australia; The University of Sydney, School of Life and Environmental Sciences, New South Wales, Australia
| | - Jibran A Wali
- The University of Sydney, Charles Perkins Centre, New South Wales, Australia; The University of Sydney, School of Life and Environmental Sciences, New South Wales, Australia
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17
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Zhang X, Wu S, Qi X, Gao S, Qi J, Zhang S, Tan J. Effect of Paternal Body Mass Index on In Vitro Fertilization and Neonatal Outcomes among Oligozoospermia and Asthenospermia Patients. World J Mens Health 2024; 42:216-228. [PMID: 37382283 PMCID: PMC10782126 DOI: 10.5534/wjmh.220286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 04/10/2023] [Accepted: 04/11/2023] [Indexed: 06/30/2023] Open
Abstract
PURPOSE Male overweight and obesity could affect sperm quality and reproductive health. However, the impact of body mass index (BMI) on assisted reproductive technology (ART) outcomes in oligospermia and/or asthenospermia patients is yet lacking. This study aims to assess the impact of paternal BMI on ART and neonatal outcomes among oligozoospermia and/or asthenospermia patients undergoing in vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI). MATERIALS AND METHODS In this study, 2,075 couples undergoing their first fresh embryo transfer between January 2015 and June 2022 were recruited. Following the World Health Organization's (WHO's) categories, couples were stratified into three cohorts based on paternal BMI: normal weight (18.5-24.9 kg/m²), overweight (25.0-29.9 kg/m²), and obese (≥30.0 kg/m²). Modified Poisson regression models were used to assess the associations of paternal BMI with fertilization, in vitro embryonic development, and pregnancy outcomes. Logistic regression models were performed to investigate the associations of paternal BMI with pregnancy loss and neonatal outcomes. Furthermore, stratified analyses were performed based on fertilization methods, male infertility cause, and maternal BMI. RESULTS Higher paternal BMI is associated with a lower likelihood of achieving normal fertilized (p-trend=0.002), Day 3 transferable (p-trend=0.007), and high-quality embryos (p-trend=0.046) in IVF cycles, rather than in ICSI cycles. Paternal BMI of oligospermia or asthenospermia was negatively correlated with day 3 transferable (p-trend=0.013 and 0.030) and high-quality embryos (p-trend=0.024 and 0.027). Moreover, for neonatal outcomes, paternal BMI was positively associated with macrosomia (p-trend=0.019), large for gestational age (LGA) (p-trend=0.031), and very LGA (p-trend=0.045). CONCLUSIONS Our data suggested that higher paternal BMI was associated with fetal overgrowth, reduced fertilization, and embryonic development potential. Among males with oligospermia and/or asthenospermia, the impact of overweight and obesity on the choice of fertilization method and the long-term effects on their offspring need to be further investigated.
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Affiliation(s)
- Xudong Zhang
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
- Key Laboratory of Reproductive Dysfunction Disease and Fertility Remodeling of Liaoning Province, Shenyang, China
| | - Shanshan Wu
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
- Key Laboratory of Reproductive Dysfunction Disease and Fertility Remodeling of Liaoning Province, Shenyang, China
| | - Xiaohan Qi
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
- Key Laboratory of Reproductive Dysfunction Disease and Fertility Remodeling of Liaoning Province, Shenyang, China
| | - Shan Gao
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
- Key Laboratory of Reproductive Dysfunction Disease and Fertility Remodeling of Liaoning Province, Shenyang, China
| | - Jiarui Qi
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
- Key Laboratory of Reproductive Dysfunction Disease and Fertility Remodeling of Liaoning Province, Shenyang, China
| | - Siwen Zhang
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
- Key Laboratory of Reproductive Dysfunction Disease and Fertility Remodeling of Liaoning Province, Shenyang, China
| | - Jichun Tan
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
- Key Laboratory of Reproductive Dysfunction Disease and Fertility Remodeling of Liaoning Province, Shenyang, China.
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18
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Santi D, Lotti F, Sparano C, Rastrelli G, Isidori AM, Pivonello R, Barbonetti A, Salonia A, Minhas S, Krausz C, Vignozzi L, Maggi M, Corona G. Does an increase in adipose tissue 'weight' affect male fertility? A systematic review and meta-analysis based on semen analysis performed using the WHO 2010 criteria. Andrology 2024; 12:123-136. [PMID: 37226894 DOI: 10.1111/andr.13460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 05/10/2023] [Accepted: 05/16/2023] [Indexed: 05/26/2023]
Abstract
INTRODUCTION Obesity negatively impact on the metabolism of sex hormones, leading to reduced testosterone serum levels. However, how the obesity could negatively impact on the overall gonadal function, particularly on male fertility, remained unclear so far. OBJECTIVE To systematically review evidences regarding the influence of body weight excess on the sperm production. METHODS A meta-analysis was conducted, searching all prospective and retrospective observational studies reporting male subjects older than 18 years old, with body weight excess from overweight to severe obesity were considered. Only studies using the V edition of the World Health Organization (WHO) manual for semen analysis interpretation were considered. No specific interventions were considered. Search was focused on studies comparing overweight/obese to normal weight subjects. RESULTS Twenty-eight studies were considered. Total sperm count and sperm progressive motility were significantly lower in overweight compared to normal weight subjects. Meta-regression analyses demonstrated that patients' age impacted on sperm parameters. Similarly, obese men showed lower sperm concentration, total sperm number, progressive and total motilities, and normal morphology lower than normal weight subjects. Reduced sperm concentration in obese men was influenced by age, smoking habit, varicocele, and total testosterone serum levels at meta-regression analyses. CONCLUSIONS The male potential fertility is reduced in subjects with increased body weight, compared to normal weight men. The higher was the increased body weight, the worst was the sperm quantity/quality. This result comprehensively included obesity among non-communicable risk factor for male infertility, shedding new lights on the negative impact of increased body weight on overall gonadal function.
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Affiliation(s)
- Daniele Santi
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Unit of Endocrinology, Department of Medical Specialties, AziendaOspedaliero-Universitaria of Modena, Modena, Italy
| | - Francesco Lotti
- Andrology, Women's Endocrinology and Gender Incongruence Unit, Center for Prevention, Diagnosis and Treatment of Infertility, Careggi Hospital, Mario Serio Department of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy
| | - Clotilde Sparano
- Endocrinology Unit, Mario Serio Department of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy
| | - Giulia Rastrelli
- Andrology, Women's Endocrinology and Gender Incongruence Unit, Center for Prevention, Diagnosis and Treatment of Infertility, Careggi Hospital, Mario Serio Department of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy
| | - Andrea M Isidori
- Department of Experimental Medicine, "Sapienza" University of Rome, Centre for Rare Diseases (Endo-ERN accredited), Policlinico Umberto I Hospital, Rome, Italy
| | - Rosario Pivonello
- Dipartimento di Medicina Clinica e Chirurgia, Sezione di Endocrinologia, Diabetologia, Andrologia e Nutrizione, Unità di Andrologia e Medicina della Riproduzione e della Sessualità Maschile e Femminile, Università Federico II di Napoli, Naples, Italy
- UNESCO, Chair for Health Education and Sustainable Development, Federico II University, Naples, Italy
| | - Arcangelo Barbonetti
- Andrology Unit, Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Andrea Salonia
- Division of Experimental Oncology/Unit of Urology, URI, IRCCS Ospedale San Raffaele, Milan, Italy
- University Vita-Salute San Raffaele, Milan, Italy
| | - Suks Minhas
- Department of Urology, Imperial College NHS Healthcare, London, UK
| | - Csilla Krausz
- Andrology, Women's Endocrinology and Gender Incongruence Unit, Center for Prevention, Diagnosis and Treatment of Infertility, Careggi Hospital, Mario Serio Department of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy
| | - Linda Vignozzi
- Andrology, Women's Endocrinology and Gender Incongruence Unit, Center for Prevention, Diagnosis and Treatment of Infertility, Careggi Hospital, Mario Serio Department of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy
| | - Mario Maggi
- Endocrinology Unit, Mario Serio Department of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy
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19
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George BT, Jhancy M, Dube R, Kar SS, Annamma LM. The Molecular Basis of Male Infertility in Obesity: A Literature Review. Int J Mol Sci 2023; 25:179. [PMID: 38203349 PMCID: PMC10779000 DOI: 10.3390/ijms25010179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 12/12/2023] [Accepted: 12/20/2023] [Indexed: 01/12/2024] Open
Abstract
The rising incidence of obesity has coincided with rising levels of poor reproductive outcomes. The molecular basis for the association of infertility in obese males is now being explained through various mechanisms. Insulin resistance, hyperglycemia, and changes in serum and gonadal concentrations of adipokines, like leptin, adiponectin, resistin, and ghrelin have been implicated as causes of male infertility in obese males. The effects of obesity and hypogonadism form a vicious cycle whereby dysregulation of the hypothalamic-pituitary-testicular axis-due to the effect of the release of multiple mediators, thus decreasing GnRH release from the hypothalamus-causes decreases in LH and FSH levels. This leads to lower levels of testosterone, which further increases adiposity because of increased lipogenesis. Cytokines such as TNF-α and interleukins, sirtuins, and other inflammatory mediators like reactive oxygen species are known to affect fertility in obese male adults. There is evidence that parental obesity can be transferred through subsequent generations to offspring through epigenetic marks. Thus, negative expressions like obesity and infertility have been linked to epigenetic marks being altered in previous generations. The interesting aspect is that these epigenetic expressions can be reverted by removing the triggering factors. These positive modifications are also transmitted to subsequent generations.
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Affiliation(s)
- Biji Thomas George
- Department of Surgery, RAK College of Medical Sciences, RAKMHSU, Ras al Khaimah P.O. Box 11172, United Arab Emirates
| | - Malay Jhancy
- Department of Pediatrics, RAK College of Medical Sciences, RAKMHSU, Ras al Khaimah P.O. Box 11172, United Arab Emirates; (M.J.); (S.S.K.)
| | - Rajani Dube
- Department of Obstetrics and Gynecology, RAK College of Medical Sciences, RAKMHSU, Ras al Khaimah P.O. Box 11172, United Arab Emirates;
| | - Subhranshu Sekhar Kar
- Department of Pediatrics, RAK College of Medical Sciences, RAKMHSU, Ras al Khaimah P.O. Box 11172, United Arab Emirates; (M.J.); (S.S.K.)
| | - Lovely Muthiah Annamma
- Department of Clinical Sciences, Ajman University, Ajman P.O. Box 346, United Arab Emirates;
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20
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Nam CS, Campbell KJ, Acquati C, Bole R, Adler A, Collins DJ, Collins E, Samplaski M, Anderson-Bialis J, Andino JJ, Asafu-Adjei D, Gaskins AJ, Bortoletto P, Vij SC, Orwig KE, Lundy SD. Deafening Silence of Male Infertility. Urology 2023; 182:111-124. [PMID: 37778476 DOI: 10.1016/j.urology.2023.09.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 09/07/2023] [Accepted: 09/23/2023] [Indexed: 10/03/2023]
Abstract
Think about 6 loved ones of reproductive age in your life. Now imagine that 1 of these 6 individuals is suffering from infertility. Perhaps they feel alone and isolated, unable to discuss their heartbreak with their closest friends, family, and support network. Suffering in silence. In this editorial, we discuss the infertility journey through the lens of the patients, the providers, and the scientists who struggle with infertility each and every day. Our goal is to open a dialogue surrounding infertility, with an emphasis on dismantling the longstanding societal barriers to acknowledging male infertility as a disease. Through education, communication, compassion, and advocacy, together we can all begin to break the deafening silence of male infertility.
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Affiliation(s)
- Catherine S Nam
- Department of Urology, University of Michigan, Ann Arbor, MI
| | | | - Chiara Acquati
- Graduate College of Social Work, University of Houston, Houston, TX; Department of Clinical Sciences, Tilman J. Fertitta Family College of Medicine, University of Houston, Houston, TX; Department of Health Disparities Research, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Raevti Bole
- Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH
| | - Ava Adler
- Lerner Research Institute, Cleveland Clinic, Cleveland, OH
| | - David J Collins
- Department of Urology, University of Southern California, Los Angeles, CA
| | - Erica Collins
- Department of Urology, University of Southern California, Los Angeles, CA
| | - Mary Samplaski
- Department of Urology, University of Southern California, Los Angeles, CA
| | | | - Juan J Andino
- Department of Urology, University of California Los Angeles, Los Angeles, CA
| | - Denise Asafu-Adjei
- Department of Urology, Department of Parkinson School of Health Sciences and Public Health, Loyola University Chicago Stritch School of Medicine, Chicago, IL
| | | | - Pietro Bortoletto
- Boston IVF, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Sarah C Vij
- Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH
| | - Kyle E Orwig
- Department of Obstetrics, Gynecology and Reproductive Sciences, Magee-Womens Research Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Scott D Lundy
- Glickman Urological and Kidney Institute, Lerner Research Institute, Cleveland Clinic, Cleveland, OH.
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21
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Peel A, Saini A, Deluao JC, McPherson NO. Sperm DNA damage: The possible link between obesity and male infertility, an update of the current literature. Andrology 2023; 11:1635-1652. [PMID: 36789664 DOI: 10.1111/andr.13409] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/13/2023] [Accepted: 02/08/2023] [Indexed: 02/16/2023]
Abstract
Obesity prevalence worldwide is increasing significantly. Whilst maternal obesity has clear detrimental impacts on fertility, pregnancy and foetal outcomes, more recently there has been an increasing focus on the role of paternal obesity in human fertility. Recent meta-analyses have indicated that obesity in men negatively affects basic sperm parameters such as sperm count, concentration and motility, increases the incidence of infertility and reduces the chances of conception. Sperm DNA damage, typically characterised by DNA strand breaks and oxidation of DNA nucleotides, is a specialised marker of sperm quality that has been independently associated with recurrent miscarriage, reduced assisted reproduction success and increased mutational loads in subsequent offspring. Whilst, there are still conflicting data in humans as to the association of obesity in men with sperm DNA damage, evidence from rodent models is clear, indicating that male obesity increases sperm DNA damage. Human data are often conflicting because of the large heterogeneity amongst studies, the use of body mass index as the indicator of obesity and the methods used for detection of sperm DNA damage. Furthermore, comorbidities of obesity (i.e., heat stress, adipokines, insulin resistance, changes in lipids, hypogonadism and obstructive sleep apnoea) are also independently associated with increased sperm DNA damage that is not always modified in men with obesity, and as such may provide a causative link to the discrepancies amongst human studies. In this review, we provide an update on the literature regarding the associations between obesity in men and fertility, basic sperm parameters and sperm DNA damage. We further discuss potential reasons for the discrepancies in the literature and outline possible direct and indirect mechanisms of increased sperm DNA damage resulting from obesity. Finally, we summarise intergenerational obesity through the paternal linage and how sperm DNA damage may contribute to the transmission.
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Affiliation(s)
- Andrew Peel
- Robinson Research Institute, The University of Adelaide, Adelaide, South Australia, Australia
- Freemasons Centre for Male Health and Wellbeing, The University of Adelaide, Adelaide, South Australia, Australia
- Adelaide Health and Medical School, School of Biomedicine, Discipline of Reproduction and Development, The University of Adelaide, Adelaide, South Australia, Australia
| | - Anmol Saini
- Robinson Research Institute, The University of Adelaide, Adelaide, South Australia, Australia
- Adelaide Health and Medical School, School of Biomedicine, Discipline of Reproduction and Development, The University of Adelaide, Adelaide, South Australia, Australia
| | - Joshua C Deluao
- Robinson Research Institute, The University of Adelaide, Adelaide, South Australia, Australia
- Freemasons Centre for Male Health and Wellbeing, The University of Adelaide, Adelaide, South Australia, Australia
- Adelaide Health and Medical School, School of Biomedicine, Discipline of Reproduction and Development, The University of Adelaide, Adelaide, South Australia, Australia
| | - Nicole O McPherson
- Robinson Research Institute, The University of Adelaide, Adelaide, South Australia, Australia
- Freemasons Centre for Male Health and Wellbeing, The University of Adelaide, Adelaide, South Australia, Australia
- Adelaide Health and Medical School, School of Biomedicine, Discipline of Reproduction and Development, The University of Adelaide, Adelaide, South Australia, Australia
- Repromed IVF Adelaide, Dulwich, South Australia, Australia
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22
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Raad G, Fakih F, Bazzi M, Massaad V, Nasrallah E, Yarkiner Z, Mourad Y, Khater DA, Balech R, Saliba C, Serdarogullari M, Fakih C. Lactobacillus plantarum secretions may exert a cryoprotective effect on human sperm motility: A prospective in vitro study. Andrology 2023; 11:1437-1450. [PMID: 36960890 DOI: 10.1111/andr.13433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 02/21/2023] [Accepted: 03/12/2023] [Indexed: 03/25/2023]
Abstract
BACKGROUND Semen cryopreservation is a widely used procedure for fertility preservation, despite some level of cryodamage that may occur in spermatozoa after thawing. However, there is some evidence that lactobacilli, one of the bacteria found in semen, might benefit sperm quality. OBJECTIVES This study aims to determine whether the addition of Lactobacillus plantarum secretions to sperm freezing medium has an impact on sperm motility, morphology, and DNA fragmentation. MATERIALS AND METHODS This is a prospective auto-controlled study. It was conducted on 30 raw semen samples from 30 infertile men attending a fertility center for semen analysis. Before freezing, all the samples were analyzed for motility, morphology, and DNA fragmentation percentages. Each sample was then divided equally into three aliquots. Cryopreservation was performed on each aliquot using one of the following three media: without Lactobacillus plantarum secretions (control group) or with 107 or 108 colony-forming units/mL Lactobacillus plantarum secretions. Sperm motility, morphology, and DNA integrity were evaluated after the cryopreservation media were added and after semen thawing. RESULTS The results of this study indicated that after thawing, no statistically significant decrease in progressive motility and non-progressive percentages were detected in the sperm freezing medium supplemented with 108 colony-forming units/mL Lactobacillus plantarum secretions than the fresh raw semen. Moreover, multivariate linear regression model analyses showed that the progressive motility (p = 0.02), non-progressive motility (p = 0.016), and non-motile spermatozoa (p = 0.012) percentages were significantly decreased in the freezing medium (without Lactobacillus plantarum secretions) compared to the fresh raw semen. DISCUSSION AND CONCLUSION To the best of our knowledge, this is the first study showing that Lactobacillus plantarum secretions had a cryoprotective effect on sperm motility when added to the sperm freezing medium. Furthermore, Lactobacillus plantarum secretions were found to protect sperm DNA integrity more effectively than the freezing medium without Lactobacillus plantarum secretions in non-normozoospermia group. Cryopreservation procedures must therefore be optimized to minimize any iatrogenically induced sperm DNA damage, given the correlation between sperm DNA damage and increased mutation loads in progeny.
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Affiliation(s)
- Georges Raad
- Faculty of Medicine and Medical Sciences, Holy Spirit University of Kaslik (USEK), Jounieh, Lebanon
- Al Hadi Laboratory and Medical Center, Beirut, Lebanon
| | - Fadi Fakih
- Al Hadi Laboratory and Medical Center, Beirut, Lebanon
| | - Marwa Bazzi
- Al Hadi Laboratory and Medical Center, Beirut, Lebanon
| | - Vinal Massaad
- Al Hadi Laboratory and Medical Center, Beirut, Lebanon
| | | | - Zalihe Yarkiner
- Department of Basic Sciences and Humanities, Faculty of Arts and Sciences, Northern Cyprus via Mersin, Cyprus International University, Turkey
| | - Youmna Mourad
- Al Hadi Laboratory and Medical Center, Beirut, Lebanon
| | | | - Rita Balech
- Faculty of Medicine, Lebanese University, Beirut, Lebanon
| | | | - Munevver Serdarogullari
- Department of Histology and Embryology, Northern Cyprus via Mersin, Faculty of Medicine, Cyprus International University, Turkey
| | - Chadi Fakih
- Al Hadi Laboratory and Medical Center, Beirut, Lebanon
- Faculty of Medicine, Lebanese University, Beirut, Lebanon
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23
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Fu ZD, Wang Y, Yan HL. Male infertility risk and gut microbiota: a Mendelian randomization study. Front Microbiol 2023; 14:1228693. [PMID: 37822739 PMCID: PMC10562550 DOI: 10.3389/fmicb.2023.1228693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 08/31/2023] [Indexed: 10/13/2023] Open
Abstract
Background In recent decades, the decline of male sperm quality has become a worldwide phenomenon, with sperm quality of critical importance for the ability to conceive naturally. Recent studies suggest that male fertility function is closely linked to the gut microbiota, however, the cause-and-effect association between the gut microbiota and male infertility risk is currently unclear. Methods We performed one two-sample Mendelian randomization (MR) study, which uses summary data on human gut microbiota from the MiBioGen consortium as factors of exposure. FinnGen Consortium R8 data was used to obtain GWAS data for male infertility. To evaluate cause-and-effect associations linking gut microbiota and male infertility risk with multiple Mendelian randomization methods, we included inverse variance weighted (IVW), MR-Egger, and Maximum Likelihood (ML) Ratio. The heterogeneity of instrumental variables was evaluated through Cochran's Q, Rucker's Q, and leave-one-out analysis methods. Results We found a positive association between Allisonella, Anaerotruncus, Barnesiella, Intestinibacter, and Lactococcus with male infertility risk according to the MR analysis results. Bacteroides Romboutsia, Ruminococcaceae (NK4A2140group), and Ruminococcaceae (UCG011) play a protective function in male infertility pathogenesis. Conclusion It was found that gut microbiota and infertility are causally related in this study. In subsequent studies, there is a need to build a larger and more comprehensive GWAS database on male infertility, which will reveal the underlying mechanisms for gut microbiota and male infertility. There is a need for randomized controlled trials for validating the protective effect of the associated gut microbiota against male infertility risk, and for exploring the associated mechanisms.
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Affiliation(s)
| | | | - Hong-li Yan
- Center for Reproductive Medicine, Changhai Hospital, Naval Medical University, Shanghai, China
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Darand M, Salimi Z, Ghorbani M, Sadeghi N, Babaie S, Hosseinzadeh M. Obesity is associated with quality of sperm parameters in men with infertility: a cross-sectional study. Reprod Health 2023; 20:134. [PMID: 37700299 PMCID: PMC10496307 DOI: 10.1186/s12978-023-01664-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 08/08/2023] [Indexed: 09/14/2023] Open
Abstract
BACKGROUND Previous studies examined the effects of obesity on sperm parameters and reported inconsistent results. Thus, the present study aimed to evaluate the association between obesity and the quality of sperm parameters in infertile men. MATERIAL AND METHODS The present cross-sectional study evaluated 218 infertile men aged 20-50. To this end, the 168-item food frequency questionnaire (FFQ) was utilized to evaluate dietary intake. The anthropometric and biochemical variables were examined using standard methods. Further, the association between obesity and the quality of sperm parameters was evaluated using the controlled linear regression for potential confounders. RESULTS The normal sperm morphology had a significant inverse association with BMI [adjusted β - 0.074, CI (- 0.141 to - 0.008), P = 0.029] and WC [adjusted β - 0.026, CI (- 0.051 to - 0.001), P = 0.038]. Additionally, visceral fat had a marginal inverse association with normal sperm morphology [adjusted β - 0.065, CI (- 0.138 to 0.008), P = 0.079] and non-progressive sperm motility [adjusted β - 0.241, CI (- 0.495 to 0.014), P = 0.063]. CONCLUSION Even though the present results indicated that obesity, abdominal obesity, and visceral fat had inverse associations with normal sperm morphology, more mechanism-based studies should be conducted to confirm these findings.
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Affiliation(s)
- Mina Darand
- Nutrition and Food Security Research Center and Department of Clinical Nutrition, School of Nutrition and Food Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Zahra Salimi
- Nutrition and Metabolic Diseases Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Moloud Ghorbani
- Department of Community Nutrition, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Narges Sadeghi
- Nutrition and Metabolic Diseases Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Syavash Babaie
- Department of Nutrition, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
- Nutrition and Food Security Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Mahdieh Hosseinzadeh
- Department of Nutrition, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
- Nutrition and Food Security Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
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Joseph MD, Hatch EE, Koenig MR, Eisenberg ML, Wang TR, Sommer GJ, Stuver SO, Rothman KJ, Wise LA. A North American study of anthropometric factors and semen quality. Fertil Steril 2023; 120:586-596. [PMID: 37164117 PMCID: PMC10524695 DOI: 10.1016/j.fertnstert.2023.04.040] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 04/27/2023] [Accepted: 04/28/2023] [Indexed: 05/12/2023]
Abstract
OBJECTIVE To evaluate the association between anthropometric measures and semen parameters. DESIGN Cross-sectional study. SUBJECTS Male participants aged ≥21 years. We analyzed data from 659 males (1185 samples) participating in a semen testing substudy of the Pregnancy Online Study (PRESTO), a North American preconception cohort study. After enrollment, we invited males aged ≥21 years to perform at-home semen testing using the Trak system. EXPOSURE(S) Participants reported selected anthropometric variables (current weight, height, waist circumference, and weight at age 17 years) and covariate data via an online baseline questionnaire. MAIN OUTCOME MEASURE(S) We used generalized estimating equations models to estimate the percent difference in mean log-transformed semen parameter values and 95% confidence intervals (CI) for associations between selected anthropometric variables and semen volume (mL), sperm concentration (million/mL), and total sperm count (million), adjusting for sociodemographics, lifestyle factors, and medical history. We also evaluated World Health Organization-defined thresholds for low semen quality. RESULT(S) Percentage differences in mean log-transformed semen volume, sperm concentration, and total sperm count (95% CI) comparing current body mass index ≥35 vs. <25 kg/m2 were -6.3 (-15.8, 4.3), -6.4 (-24.6, 16.2), and -12.2 (-31.1, 11.8), respectively. Percentage differences (95% CIs) comparing waist circumferences of ≥42 vs. <31 inches were -4.2 (-15.0, 8.0), -6.4 (-27.6, 21.0), and -10.4 (-31.9, 17.9) for semen volume, sperm concentration, and total sperm count, respectively. Greater adult weight gain since age 17 years was associated with reduced semen volume (≥25 vs. <5 kg; percent difference, -9.7; 95% CI, -18.4, 0.1), but not sperm concentration or total sperm count. The highest categories of each anthropometric variable generally were associated with World Health Organization-defined low total sperm count (≤39 million). CONCLUSION(S) Selected anthropometric factors were associated modestly with poorer semen quality.
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Affiliation(s)
- Marlon D Joseph
- Department of Epidemiology, Boston University School of Public Health, Boston, Massachusetts
| | - Elizabeth E Hatch
- Department of Epidemiology, Boston University School of Public Health, Boston, Massachusetts
| | - Martha R Koenig
- Department of Epidemiology, Boston University School of Public Health, Boston, Massachusetts
| | - Michael L Eisenberg
- Department of Obstetrics and Gynecology, Stanford University, Stanford, California; Department of Urology, Stanford University, Stanford, California
| | - Tanran R Wang
- Department of Epidemiology, Boston University School of Public Health, Boston, Massachusetts
| | | | - Sherri O Stuver
- Department of Epidemiology, Boston University School of Public Health, Boston, Massachusetts
| | - Kenneth J Rothman
- Department of Epidemiology, Boston University School of Public Health, Boston, Massachusetts
| | - Lauren A Wise
- Department of Epidemiology, Boston University School of Public Health, Boston, Massachusetts.
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Akkaliyev M, Aukenov N, Massabayeva M, Apsalikov B, Rakhyzhanova S, Kuderbaev M. Genetic regulation of testosterone level in overweight males from the Kazakh population and its association with hypogonadism. J Med Life 2023; 16:1343-1349. [PMID: 38107722 PMCID: PMC10719783 DOI: 10.25122/jml-2022-0203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 04/18/2023] [Indexed: 12/19/2023] Open
Abstract
Male hypogonadism and erectile dysfunction in different populations are associated with excess body weight. A key aspect in most studies is the metabolism of sexual hormones, primarily testosterone. At the same time, the binding protein sex hormone binding globulin (SHBG) can play a large role, as it determines the ratio of total and bioavailable testosterone in blood, i.e. both the hormone content and level of its production. Recent research has identified common mutations that affect SHBG levels, such as the rs727428 polymorphic locus, which is associated with alterations in histone protein function, affecting the regulation of ribonucleic acid (RNA) protein SHBG synthesis. Similar relationships have been observed for prevalent mutations, including rs5934505 and rs10822184, in diverse populations. This study involved 300 individuals of Kazakh nationality from the Eastern Kazakhstan region, examining three polymorphic variants of the SHBG gene (rs727428, rs5934505, and rs10822184). The participants were categorized into three groups: individuals with hypogonadism and obesity (group 1, n=85), those with excess body weight but no hypogonadism (group 2, n=70), and individuals with neither excess body weight nor hypogonadism (group 3, n=145). The frequency of mutant gene alleles impacting GPS (SHBG) synthesis in the Kazakh population was notably high, comparable to European and South-East Asian populations. However, the association between excess body weight and these mutations exhibited varying patterns. Hypogonadism was linked to decreased GPS levels, strongly correlating with total testosterone but not bioavailable testosterone. The retention of sexual functions in overweight men was not always directly related to BMI levels and GPS concentrations.
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Affiliation(s)
- Merkhat Akkaliyev
- Department of Surgical Disciplines, Semey Medical University, Semey, Kazakhstan
| | - Nurlan Aukenov
- Department of Health and Human Resources, Ministry of Health, Nur-Sultan, Kazakhstan
| | - Meruyert Massabayeva
- Center of Scientific Research Laboratory, Semey Medical University, Semey, Kazakhstan
| | - Bakytbek Apsalikov
- Department of Family Medicine, Semey Medical University, Semey, Kazakhstan
| | - Saule Rakhyzhanova
- Department of Normal Physiology, Semey Medical University, Semey, Kazakhstan
| | - Muratkhan Kuderbaev
- Department of Surgical Disciplines, Semey Medical University, Semey, Kazakhstan
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Chen YK, Liu TT, Teia FKF, Xie MZ. Exploring the underlying mechanisms of obesity and diabetes and the potential of Traditional Chinese Medicine: an overview of the literature. Front Endocrinol (Lausanne) 2023; 14:1218880. [PMID: 37600709 PMCID: PMC10433171 DOI: 10.3389/fendo.2023.1218880] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 07/18/2023] [Indexed: 08/22/2023] Open
Abstract
Obesity and diabetes are closely related metabolic disorders that have become major public health concerns worldwide. Over the past few decades, numerous studies have explored the underlying mechanisms of these disorders and identified various risk factors, including genetics, lifestyle, and dietary habits. Traditional Chinese Medicine (TCM) has been increasingly recognized for its potential to manage obesity and diabetes. Weight loss is difficult to sustain, and several diabetic therapies, such as sulfonylureas, thiazolidinediones, and insulin, might make it harder to lose weight. While lifestyle changes should be the primary approach for people interested in lowering weight, drugs are also worth investigating. Since some of the newer glucose-lowering medications that cause weight loss, such as glucagon-like peptide-1 receptor agonists (GLP-1 RAs) and sodium-glucose cotransporter 2 inhibitors (SGLT2i), are additionally utilized or are under consideration for use as anti-obesity drugs, the frontier between glucose-lowering medication and weight loss drugs appears to be shifting. This review provides an overview of the literature on the underlying mechanisms of obesity and diabetes and the prospect of TCM in their management. We discuss the various TCM interventions, including acupuncture, herbal medicine, and dietary therapy, and their effects on metabolic health. We also highlight the potential of TCM in regulating gut microbiota, reducing inflammation, and improving insulin sensitivity. The findings suggest that TCM may provide a promising approach to preventing and managing obesity and diabetes. However, further well-designed studies are needed to confirm the efficacy and safety of TCM interventions and to elucidate their underlying mechanisms of action.
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Affiliation(s)
- Yan-kun Chen
- School of Chinese Medicine, Hunan University of Chinese Medicine, Changsha, China
- Hunan Engineering Technology Research Center for Medicinal and Functional Food, Hunan University of Chinese Medicine, Changsha, China
- Key Laboratory of TCM Heart and Lung Syndrome Differentiation and Medicated Diet and Dietotherapy, Hunan University of Chinese Medicine, Changsha, China
| | - Ting-ting Liu
- School of Chinese Medicine, Hunan University of Chinese Medicine, Changsha, China
- Hunan Engineering Technology Research Center for Medicinal and Functional Food, Hunan University of Chinese Medicine, Changsha, China
- Key Laboratory of TCM Heart and Lung Syndrome Differentiation and Medicated Diet and Dietotherapy, Hunan University of Chinese Medicine, Changsha, China
| | - Farah Khameis Farag Teia
- Department of Agro-technology, Medicinal and Aromatic Plants and Traditional Medicine Research Institute, National Centre for Research, Khartoum, Sudan
| | - Meng-zhou Xie
- School of Chinese Medicine, Hunan University of Chinese Medicine, Changsha, China
- Hunan Engineering Technology Research Center for Medicinal and Functional Food, Hunan University of Chinese Medicine, Changsha, China
- Key Laboratory of TCM Heart and Lung Syndrome Differentiation and Medicated Diet and Dietotherapy, Hunan University of Chinese Medicine, Changsha, China
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Wan B, Ma N, Zhou Z, Lv C. Putative causal inference for the relationship between obesity and sex hormones in males: a bidirectional Mendelian randomization study. PeerJ 2023; 11:e15760. [PMID: 37483981 PMCID: PMC10362853 DOI: 10.7717/peerj.15760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 06/27/2023] [Indexed: 07/25/2023] Open
Abstract
Background Obesity is a chronic disease with a high prevalence rate and is an established risk factor for human health. Body mass index (BMI) is a common and primary indicator used in assessing obesity. This work aims to investigate the putative causal relationship among BMI, sex hormone-binding globulin (SHBG), bioavailable testosterone (BioT), and estradiol levels. Materials and Methods We conducted a bidirectional Mendelian randomization study, using single-nucleotide polymorphisms (SNPs) strongly associated with BMI, SHBG, BioT, and estradiol as instrumental variables. All SNPs were identified from the genome-wide association study (GWAS) summary data of large sample studies recruiting more than 150,000 European adult male individuals. The inverse-variance-weighted (IVW) approach was used as a primary algorithm for putative causal estimation. Results Genetically predicted elevated BMI was associated with decreased SHBG (IVW, β = -0.103, 95% confidence interval [CI] [-0.113 to -0.092], P = 1.50 × 10-77) and BioT levels (IVW, β = -0.139, 95% CI [-0.165 to -0.113], P = 9.54 × 10-26) and high estradiol levels (IVW, β = 0.014, 95% CI [0.009-0.019], P = 2.19 × 10-7). Increased SHBG levels were causally associated with low BMI (IVW, β = -0.051, 95% CI [-0.098 to -0.005], P = 0.030) and BioT (IVW, β = -0.126, 95% CI [-0.175 to -0.077], P = 5.97 × 10-7) and high estradiol levels (IVW, β = 0.046, 95% CI [0.035-0.056], P = 6.51 × 10-17). Conversely, no evidence of an effect of estradiol imbalance on SHBG levels (IVW, β = 1.035, 95% CI [-0.854 to 2.926], P = 0.283) and BMI (IVW, β = 0.091, 95% CI [-0.094 to 0.276], P = 0.336) was obtained. However, increased BioT levels were causally associated with lower SHBG levels (IVW, β = -0.044, 95% CI [-0.061 to -0.026], P = 8.76 × 10-7), not BMI (IVW, β = -0.006, 95% CI [-0.035 to 0.023], P = 0.679). Conclusions The findings support a network putative causal relationship among BMI, SHBG, BioT, and estradiol. SHBG, BioT, and estradiol may partly mediate the effect of obesity on male health. Reasonably modulating BioT and estradiol, especially SHBG, facilitated the attenuation of the harmful effects of obesity on male health.
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Affiliation(s)
- Bangbei Wan
- Department of Urology, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, Hainan, China
- Reproductive Medical Center, Hainan Women and Children’s Medical Center, Haikou, Hainan, China
| | - Ning Ma
- Reproductive Medical Center, Hainan Women and Children’s Medical Center, Haikou, Hainan, China
| | - Zhi Zhou
- Reproductive Medical Center, Hainan Women and Children’s Medical Center, Haikou, Hainan, China
| | - Cai Lv
- Department of Urology, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, Hainan, China
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Li Y, Lu T, Wu Z, Wang Z, Yu T, Wang H, Tang C, Zhou Y. Trends in sperm quality by computer-assisted sperm analysis of 49,189 men during 2015-2021 in a fertility center from China. Front Endocrinol (Lausanne) 2023; 14:1194455. [PMID: 37529601 PMCID: PMC10390301 DOI: 10.3389/fendo.2023.1194455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 06/07/2023] [Indexed: 08/03/2023] Open
Abstract
Background Sperm quality, including semen volume, sperm count, concentration, and total and progressive motility (collectively, "semen parameters"), has declined in the recent decades. Computer-assisted sperm analysis (CASA) provides sperm kinematic parameters, and the temporal trends of which remain unclear. Our objective is to examine the temporal trend of both semen parameters and kinematic parameters in Shanghai, China, in the recent years. Methods This retrospective study analyzed semen parameters and kinematic parameters of 49,819 men attending our reproductive center by using CASA during 2015-2021. The total sample was divided into two groups: samples that surpassed the WHO guideline (2010) low reference limits ("above reference limit" group, ARL; n = 24,575) and samples that did not ("below reference limit" group, BRL; n = 24,614). One-way analysis of variance, Kruskal-Wallis test, independent samples t-test, and covariance analysis were used to assess the differences among groups. Year, age, and abstinence time were included in the multiple linear regression model of the ARL group to adjust the confounders and depict the trends in sperm quality. Results Among all the total sample and the ARL and BRL groups, the age of subjects increased in recent years. Semen volume and sperm count showed declined tendency with years in the total sample, the ARL and BRL groups, and the subgroup of age or abstinence time, whereas sperm velocities showed increased tendency with years on the contrary. The multiple linear regression model of the ARL group, adjusting for age and abstinence time, confirmed these trends. Semen volume (β1= -0.162; CI: -0.172, -0.152), sperm count (β1= -9.97; CI: -10.813, -9.128), sperm concentration (β1 = -0.535; CI: -0.772, -0.299), motility (β1 = -1.751; CI: -1.830, -1.672), and progressive motility (β1 = -1.12; CI: -0.201, -0.145) decreased with year, whereas curvilinear line velocity (VCL) (β1 = 3.058; CI: 2.912, 3.203), straight line velocity (VSL) (β1 = 2.075; CI: 1.990, 2.161), and average path velocity (VAP) (β1 = 2.305; CI: 2.224, 2.386) increased over time (all p < 0.001). In addition, VCL, VSL, and VAP significantly declined with age and abstinence time. Conclusion The semen parameters declined, whereas the kinematic parameters increased over the recent years. We propose that, although sperm count and motility declined over time, sperm motion velocity increased, suggesting a possible compensatory mechanism of male fertility.
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Affiliation(s)
- Yanquan Li
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
| | - Tingting Lu
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
| | - Zhengmu Wu
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Zhengquan Wang
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ting Yu
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
| | - Hanshu Wang
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
| | - Chunhua Tang
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
| | - Yuchuan Zhou
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
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30
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Ceraolo C, Rubano A, Gabrielsen JS. Obesity and Male Infertility: True, True, and Unrelated? Semin Reprod Med 2023; 41:70-79. [PMID: 38198791 DOI: 10.1055/s-0043-1777725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
While the prevalence of obesity has rapidly increased worldwide, there has also been a notable decline in semen parameters over the last several decades. While obesity can negatively impact reproductive hormones, many studies have sought a link between rising obesity and decreased male fertility potential. Nonetheless, few data support a direct link between the two. The focus on obesity as a causative factor in male infertility can potentially result in patient harm through delayed fertility treatment and missed diagnoses. This review investigates the associations between obesity and male infertility and why a potential direct link has been elusive and may not exist. Additionally, indirect mechanisms that may link the two will be reviewed and treatment options for obese infertile men presenting for evaluation will briefly be discussed.
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Affiliation(s)
- Carl Ceraolo
- Department of Urology, University of Rochester, Rochester, New York
| | - Amanda Rubano
- School of Medicine and Dentistry, University of Rochester, Rochester, New York
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Zhong Q, Xiao X, Qiu Y, Xu Z, Chen C, Chong B, Zhao X, Hai S, Li S, An Z, Dai L. Protein posttranslational modifications in health and diseases: Functions, regulatory mechanisms, and therapeutic implications. MedComm (Beijing) 2023; 4:e261. [PMID: 37143582 PMCID: PMC10152985 DOI: 10.1002/mco2.261] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 03/26/2023] [Accepted: 03/27/2023] [Indexed: 05/06/2023] Open
Abstract
Protein posttranslational modifications (PTMs) refer to the breaking or generation of covalent bonds on the backbones or amino acid side chains of proteins and expand the diversity of proteins, which provides the basis for the emergence of organismal complexity. To date, more than 650 types of protein modifications, such as the most well-known phosphorylation, ubiquitination, glycosylation, methylation, SUMOylation, short-chain and long-chain acylation modifications, redox modifications, and irreversible modifications, have been described, and the inventory is still increasing. By changing the protein conformation, localization, activity, stability, charges, and interactions with other biomolecules, PTMs ultimately alter the phenotypes and biological processes of cells. The homeostasis of protein modifications is important to human health. Abnormal PTMs may cause changes in protein properties and loss of protein functions, which are closely related to the occurrence and development of various diseases. In this review, we systematically introduce the characteristics, regulatory mechanisms, and functions of various PTMs in health and diseases. In addition, the therapeutic prospects in various diseases by targeting PTMs and associated regulatory enzymes are also summarized. This work will deepen the understanding of protein modifications in health and diseases and promote the discovery of diagnostic and prognostic markers and drug targets for diseases.
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Affiliation(s)
- Qian Zhong
- Department of Endocrinology and MetabolismGeneral Practice Ward/International Medical Center WardGeneral Practice Medical Center and National Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China Hospital, Sichuan UniversityChengduChina
| | - Xina Xiao
- Department of Endocrinology and MetabolismGeneral Practice Ward/International Medical Center WardGeneral Practice Medical Center and National Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China Hospital, Sichuan UniversityChengduChina
| | - Yijie Qiu
- Department of Endocrinology and MetabolismGeneral Practice Ward/International Medical Center WardGeneral Practice Medical Center and National Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China Hospital, Sichuan UniversityChengduChina
| | - Zhiqiang Xu
- Department of Endocrinology and MetabolismGeneral Practice Ward/International Medical Center WardGeneral Practice Medical Center and National Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China Hospital, Sichuan UniversityChengduChina
| | - Chunyu Chen
- Department of Endocrinology and MetabolismGeneral Practice Ward/International Medical Center WardGeneral Practice Medical Center and National Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China Hospital, Sichuan UniversityChengduChina
| | - Baochen Chong
- Department of Endocrinology and MetabolismGeneral Practice Ward/International Medical Center WardGeneral Practice Medical Center and National Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China Hospital, Sichuan UniversityChengduChina
| | - Xinjun Zhao
- Department of Endocrinology and MetabolismGeneral Practice Ward/International Medical Center WardGeneral Practice Medical Center and National Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China Hospital, Sichuan UniversityChengduChina
| | - Shan Hai
- Department of Endocrinology and MetabolismGeneral Practice Ward/International Medical Center WardGeneral Practice Medical Center and National Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China Hospital, Sichuan UniversityChengduChina
| | - Shuangqing Li
- Department of Endocrinology and MetabolismGeneral Practice Ward/International Medical Center WardGeneral Practice Medical Center and National Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China Hospital, Sichuan UniversityChengduChina
| | - Zhenmei An
- Department of Endocrinology and MetabolismGeneral Practice Ward/International Medical Center WardGeneral Practice Medical Center and National Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China Hospital, Sichuan UniversityChengduChina
| | - Lunzhi Dai
- Department of Endocrinology and MetabolismGeneral Practice Ward/International Medical Center WardGeneral Practice Medical Center and National Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China Hospital, Sichuan UniversityChengduChina
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32
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Raee P, Shams Mofarahe Z, Nazarian H, Abdollahifar MA, Ghaffari Novin M, Aghamiri S, Ghaffari Novin M. Male obesity is associated with sperm telomere shortening and aberrant mRNA expression of autophagy-related genes. Basic Clin Androl 2023; 33:13. [PMID: 37226085 DOI: 10.1186/s12610-023-00188-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 01/26/2023] [Indexed: 05/26/2023] Open
Abstract
BACKGROUND Obesity is regarded a global public health crisis. It has been implicated in a variety of health problems, but when it comes to male fertility, how and to what extent obesity affects it are poorly understood. Accordingly, semen samples from 32 individuals with obesity (body mass index (BMI) ≥ 30 kg/m2) and 32 individuals with normal weight (BMI: 18.5-25 kg/m2) were obtained. Here, for the first time, we examined the association between obesity, relative sperm telomere length (STL) and autophagy-related mRNA levels such as Beclin1, AMPKa1, ULK1, BAX, and BCL2. Each group was also evaluated for conventional semen parameters, sperm apoptotic changes, DNA fragmentation index (DFI), sperm chromatin maturation, and reactive oxygen species (ROS) levels. RESULTS Based on our findings, there was a marked reduction in relative STL in individuals with obesity as compared to the normal-weight group. We also found a significant negative correlation between relative STL and age, BMI, DFI, percentage of sperm with immature chromatin, and intracellular ROS levels in patients with obesity. In the normal-weight group, relative STL was only negatively correlated with DFI and intracellular ROS levels. Regarding mRNA expression, there was considerable upregulation of Beclin1, ULK1, and BCL2 in the group with obesity compared to the normal-weight group. Obesity was also found to be associated with a considerable decline in semen volume, total sperm count, progressive motility, and viability in comparison to normal-weight individuals. Furthermore, obesity was associated with considerably higher percentages of DFI, sperm with immature chromatin, late-stage apoptosis, and elevated ROS levels. CONCLUSION According to our findings, obesity is associated with sperm telomere shortening and aberrant autophagy-related mRNA expression. It should be emphasized that telomere shortening in sperm may be an indirect consequence of obesity due to the oxidative stress associated with the condition. Nevertheless, further investigation is required for a more comprehensive understanding.
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Affiliation(s)
- Pourya Raee
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Zahra Shams Mofarahe
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamid Nazarian
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad-Amin Abdollahifar
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahsa Ghaffari Novin
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shahin Aghamiri
- Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Marefat Ghaffari Novin
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Sones J, Balogh O. Body Condition and Fertility in Dogs. Vet Clin North Am Small Anim Pract 2023:S0195-5616(23)00067-0. [PMID: 37211441 DOI: 10.1016/j.cvsm.2023.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Ideal body condition and nutritional status in dogs is essential for quality of life, including reproductive health. Herein, we review the implications body condition, particularly fat, has on puberty, fertility, pregnancy, and parturition in dogs. Ideal body condition at puberty is necessary for dogs to achieve sexual maturity and reproduce. Moreover, over and under conditioned female dogs have increased risk of adverse pregnancy, parturition, and neonatal outcomes. Less is known about body condition and male dog fertility but some evidence is provided in this article. Finally, recommendations for maintaining an ideal body condition in intact adult dogs for optimal fertility are provided.
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Affiliation(s)
- Jennifer Sones
- Veterinary Clinical Sciences, Louisiana State University School of Veterinary Medicine, Skip Bertman Drive, Baton Rouge, LA 70803, USA.
| | - Orsolya Balogh
- Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, 215 Duck Pond Drive, Blacksburg, VA 24061, USA.
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34
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Crean AJ, Afrin S, Niranjan H, Pulpitel TJ, Ahmad G, Senior AM, Freire T, Mackay F, Nobrega MA, Barrès R, Simpson SJ, Pini T. Male reproductive traits are differentially affected by dietary macronutrient balance but unrelated to adiposity. Nat Commun 2023; 14:2566. [PMID: 37142562 PMCID: PMC10160019 DOI: 10.1038/s41467-023-38314-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Accepted: 04/25/2023] [Indexed: 05/06/2023] Open
Abstract
Dietary factors influence male reproductive function in both experimental and epidemiological studies. However, there are currently no specific dietary guidelines for male preconception health. Here, we use the Nutritional Geometry framework to examine the effects of dietary macronutrient balance on reproductive traits in C57BL/6 J male mice. Dietary effects are observed in a range of morphological, testicular and spermatozoa traits, although the relative influence of protein, fat, carbohydrate, and their interactions differ depending on the trait being examined. Interestingly, dietary fat has a positive influence on sperm motility and antioxidant capacity, differing to typical high fat diet studies where calorie content is not controlled for. Moreover, body adiposity is not significantly correlated with any of the reproductive traits measured in this study. These results demonstrate the importance of macronutrient balance and calorie intake on reproductive function and support the need to develop specific, targeted, preconception dietary guidelines for males.
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Affiliation(s)
- A J Crean
- Charles Perkins Centre and School of Life and Environmental Sciences, The University of Sydney, Camperdown, NSW, 2006, Australia
| | - S Afrin
- Charles Perkins Centre and School of Life and Environmental Sciences, The University of Sydney, Camperdown, NSW, 2006, Australia
| | - H Niranjan
- Charles Perkins Centre and School of Life and Environmental Sciences, The University of Sydney, Camperdown, NSW, 2006, Australia
| | - T J Pulpitel
- Charles Perkins Centre and School of Life and Environmental Sciences, The University of Sydney, Camperdown, NSW, 2006, Australia
| | - G Ahmad
- Charles Perkins Centre and School of Life and Environmental Sciences, The University of Sydney, Camperdown, NSW, 2006, Australia
- Department of Andrology, Royal Women's and Children's Pathology, Royal Women's Hospital, Parkville, VIC, 3053, Australia
| | - A M Senior
- Charles Perkins Centre and School of Life and Environmental Sciences, The University of Sydney, Camperdown, NSW, 2006, Australia
| | - T Freire
- Charles Perkins Centre and School of Life and Environmental Sciences, The University of Sydney, Camperdown, NSW, 2006, Australia
| | - F Mackay
- Charles Perkins Centre and School of Life and Environmental Sciences, The University of Sydney, Camperdown, NSW, 2006, Australia
| | - M A Nobrega
- Department of Human Genetics, University of Chicago, Chicago, IL, 60637, USA
| | - R Barrès
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, DK-2200, Denmark
- Institut de Pharmacologie Mole´ culaire et Cellulaire, Universite´ Coˆ te d'Azur & Centre National pour la Recherche Scientifique (CNRS), Valbonne, 06560, France
| | - S J Simpson
- Charles Perkins Centre and School of Life and Environmental Sciences, The University of Sydney, Camperdown, NSW, 2006, Australia
| | - T Pini
- Charles Perkins Centre and School of Life and Environmental Sciences, The University of Sydney, Camperdown, NSW, 2006, Australia.
- School of Veterinary Science, The University of Queensland, Gatton, QLD, 4343, Australia.
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35
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Huang D, Zhang Y, Wang X, Guo R, Leng X, Du Q, Wu Q, Pan B, Zhao Y. Dietary total antioxidant capacity and the risk of developing asthenozoospermia: a hospital-based case-control study in China. Hum Reprod 2023; 38:537-548. [PMID: 36728412 DOI: 10.1093/humrep/dead010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 01/06/2023] [Indexed: 02/03/2023] Open
Abstract
STUDY QUESTION Is dietary total antioxidant capacity (DTAC) associated with the odds of developing asthenozoospermia in Chinese men? SUMMARY ANSWER There is no statistically significant association between DTAC indices and the odds of developing asthenozoospermia. WHAT IS KNOWN ALREADY Both diet and oxidative stress may be related to sperm quality; however, few studies have investigated the association between DTAC and sperm quality. STUDY DESIGN, SIZE, DURATION This case-control study was conducted from June 2020 to December 2020. Those diagnosed with asthenozoospermia were assigned to the case group, whereas those with normal sperm parameters were assigned to the control group. Data from a total of 553 cases and 586 controls were included in the final analysis. PARTICIPANTS/MATERIALS, SETTING, METHODS Men who had been referred to the infertility clinic of Shengjing Hospital of China Medical University were enrolled. Dietary intake was assessed using a validated food frequency questionnaire. DTAC was based on ferric-reducing ability of plasma (FRAP), total oxygen radical absorbance capacity (T-ORAC), hydrophilic oxygen radical absorbance capacity (H-ORAC), lipophilic oxygen radical absorbance capacity (L-ORAC), total phenolics (TP), total radical-trapping antioxidant parameter (TRAP), and Trolox equivalent antioxidant capacity (TEAC). Asthenozoospermia was defined according to the criteria published in the fifth edition of the World Health Organization laboratory manual for the examination and processing of human semen. MAIN RESULTS AND THE ROLE OF CHANCE No significant association was observed between the DTAC indices and the odds of asthenozoospermia after multivariable adjustment (T3 vs T1, odds ratio (OR) = 0.99, 95% CI: 0.73-1.33 for FRAP; OR = 1.05, 95% CI: 0.77-1.42 for T-ORAC; OR = 0.88, 95% CI: 0.65-1.18 for H-ORAC; OR = 0.98, 95% CI: 0.71-1.34 for L-ORAC; OR = 1.03, 95% CI: 0.76-1.39 for TP; OR = 1.18, 95% CI: 0.87-1.59 for TRAP; and OR = 1.15, 95% CI: 0.85-1.55 for TEAC). Both additive and multiplicative interaction analyses suggested that smoking might modify the association of T-ORAC with the odds of developing asthenozoospermia (relative excess risk due to interaction = 0.45, 95% CI: 0.07-0.83, attributable proportion due to interaction = 0.46, 95% CI: 0.07-0.84 for additive interaction; P = 0.033 for multiplicative interaction). LIMITATIONS, REASONS FOR CAUTION Recall bias and protopathic bias were inevitable in this retrospective case-control study. The estimation accuracy of the DTAC indices may have also affected the findings. WIDER IMPLICATIONS OF THE FINDINGS To the best of our knowledge, this is the first study to specifically investigate whether an association exists between DTAC and the odds of developing asthenozoospermia. Although no significant association was found, this study provides novel information pertaining to the fields of nutrition and human reproduction. STUDY FUNDING/COMPETING INTEREST(S) This work was supported by the JieBangGuaShuai Project of Liaoning Province (2021JH1/10400050), the Shengjing Hospital Clinical Research Project (M0071), and the Outstanding Scientific Fund of Shengjing Hospital (M1150). All authors have no competing interests to disclose. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- Donghui Huang
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China
- Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Liaoning, China
| | - Yixiao Zhang
- Department of Urology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xiaobin Wang
- Center for Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China
| | - Renhao Guo
- Center for Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xu Leng
- Center for Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China
| | - Qiang Du
- Center for Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China
| | - Qijun Wu
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China
- Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Liaoning, China
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
- Key Laboratory of Reproductive and Genetic Medicine (China Medical University), National Health Commission, Shenyang, China
| | - Bochen Pan
- Center for Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yuhong Zhao
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China
- Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Liaoning, China
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36
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Xu GL, Ye XL, Vashisth MK, Zhao WZ. Correlation between PRDX2 and spermatogenesis under oxidative stress. Biochem Biophys Res Commun 2023; 656:139-145. [PMID: 36963350 DOI: 10.1016/j.bbrc.2023.03.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 03/17/2023] [Indexed: 03/22/2023]
Abstract
BACKGROUND Obesity is one of the world's diseases that endanger human health, causing systemic inflammation caused by excessive reactive oxygen damage. An increase in the proportion of obese people with reduced sperm motility has been reported. But the mechanism behind it remains unclear. Peroxiredoxin 2 (PRDX2) is a member of the peroxidase family that effectively removes hydrogen peroxide. This study is to clarify the expression of PRDX2 in the testes of obese mice and lay a foundation for further exploration of the regulatory and protective effects of PRDX2 on spermatogenesis. METHOD A model of high-fat-induced obesity in animals was constructed, and the expression of PRDX2 in the testes of the two groups was detected by immunohistochemistry, western blotting, immunofluorescence and other techniques. Hydrogen peroxide (H2O2) and cholesterol were co-cultured in testicular support cells for 48 h to observe the expression of PRDX2. RESULT PRDX2 expression was reduced in the testes of the obese group, and immunohistochemistry showed that it was mainly localized to supporting cells. H2O2 inhibits the expression of PRDX2 in Sertoli cells, and high cholesterol upregulates the expression of PRDX2 in Sertoli cells. CONCLUSION PRDX2 has some antioxidant properties against changes in the testicular environment caused by HFD. And under short-term oxidative stress to enhance its antioxidant capacity. PRDX2 may be involved in maintaining the oxidative balance of the spermatogenesis environment.
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Affiliation(s)
- Guo-Lin Xu
- Department of Histology and Embryology, School of Basic Medicine, Dali University, Dali, Yunnan, PR China.
| | - Xiao-Lin Ye
- Department of Histology and Embryology, School of Basic Medicine, Dali University, Dali, Yunnan, PR China.
| | - Manoj Kumar Vashisth
- Department of Human Anatomy, School of Basic Medicine, Dali University, Dali, Yunnan, PR China.
| | - Wen-Zhen Zhao
- Department of Histology and Embryology, School of Basic Medicine, Dali University, Dali, Yunnan, PR China.
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37
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Ferreux L, Boumerdassi Y, Dulioust E, Bertagna X, Roucher-Boulez F, Bourdon M, Thiounn N, Patrat C. Testicular impairment in Primary Adrenal Insufficiency caused by Nicotinamide Nucleotide Transhydrogenase (NNT) deficiency - a case report: implication of oxidative stress and importance of fertility preservation. Basic Clin Androl 2023; 33:17. [PMID: 36918776 PMCID: PMC10015661 DOI: 10.1186/s12610-022-00176-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 11/08/2022] [Indexed: 03/15/2023] Open
Abstract
INTRODUCTION Nicotinamide nucleotide transhydrogenase (NNT) gene deficiency has recently been shown to be involved in Primary Adrenal Insufficiency (PAI). NNT encodes an inner mitochondrial membrane protein that produces large amounts of NADPH. NADPH is used in several biosynthesis pathways and the oxidoreduction of free radicals by the glutathione and thioredoxin systems in mitochondria. Patients with PAI due to NNT deficiency may also exhibit extra-adrenal manifestations, usually including gonadal impairment. CASE REPORT We present the case of a 35-year-old patient referred to our center for primary infertility with non-obstructive azoospermia, in a context of PAI and obesity. PAI genetic exploration carried out at the age of thirty revealed NNT deficiency due to the presence of two deleterious mutations (one on each allele) in the NNT gene. Scrotal ultrasound revealed a right Testicular Adrenal Rest Tumor (TART). Intensification of glucocorticoid therapy over the course of 8 months failed to reduce the TART volume or improve sperm production and endocrine function. No spermatozoa were found after surgical exploration of both testes, and subsequent histopathological analysis revealed bilateral Sertoli cell-only syndrome. A retrospective review of the hypothalamic-pituitary-gonadic axis hormonal assessment over 20 years showed progressive impairment of testicular function, accelerated during adulthood, leading to hypergonadotropic hypogonadism and non-obstructive azoospermia when the patient reached his thirties, while the PAI remained controlled over the same period. CONCLUSION This case report provides, for the first time, direct evidence of complete germ line loss in an azoospermic man with NNT deficiency. Additional data further support the hypothesis of a determinant role of oxidative cellular damage due to reactive oxygen species (ROS) imbalance in the severe gonadal impairment observed in this NNT-deficient patient. Early and regular evaluation of gonadal function should be performed in patients with PAI, especially with NNT deficiency, as soon as the patients reach puberty. Fertility preservation options should then be provided in early adulthood for these patients.
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Affiliation(s)
- Lucile Ferreux
- Service de Biologie de La Reproduction-CECOS, CHU Cochin - Bâtiment Port Royal, Hôpitaux de Paris (AP- HP), APHP. Centre - Université de Paris CitéHôpital Cochin, 123 Boulevard de Port-Royal, 75679, Paris 14, France.
| | - Yasmine Boumerdassi
- Service de Biologie de La Reproduction-CECOS, CHU Cochin - Bâtiment Port Royal, Hôpitaux de Paris (AP- HP), APHP. Centre - Université de Paris CitéHôpital Cochin, 123 Boulevard de Port-Royal, 75679, Paris 14, France
| | - Emmanuel Dulioust
- Service de Biologie de La Reproduction-CECOS, CHU Cochin - Bâtiment Port Royal, Hôpitaux de Paris (AP- HP), APHP. Centre - Université de Paris CitéHôpital Cochin, 123 Boulevard de Port-Royal, 75679, Paris 14, France.,Université de Paris Cité Institut Cochin, U1016, INSERM, CNRS, F-75014, Paris, France
| | - Xavier Bertagna
- Hôpitaux de Paris (AP- HP), APHP. Centre - Université de Paris Cité, Hôpital Cochin, Service d'endocrinologie Et Maladies Métaboliques, Paris, France
| | - Florence Roucher-Boulez
- Hospices Civils de Lyon, HCL. Centre - Laboratoire de Biochimie Et Biologie Moléculaire, UM Endocrinologie- Centre de Référence du Développement Génital- Univ Lyon, Université Claude Bernard, Lyon 1, Lyon, France
| | - Mathilde Bourdon
- Université de Paris Cité Institut Cochin, U1016, INSERM, CNRS, F-75014, Paris, France.,Hôpitaux de Paris (AP-HP), AP-HP. Centre - Université de Paris Cité, Hôpital Cochin, Service de Gynécologie-Obstétrique II Et de Médecine de La Reproduction, Paris, France
| | - Nicolas Thiounn
- Hôpitaux de Paris (AP- HP), APHP. Centre - Université de Paris Cité, Hôpital Européen Georges-Pompidou (HEGP), Service d'Urologie, Paris, France
| | - Catherine Patrat
- Service de Biologie de La Reproduction-CECOS, CHU Cochin - Bâtiment Port Royal, Hôpitaux de Paris (AP- HP), APHP. Centre - Université de Paris CitéHôpital Cochin, 123 Boulevard de Port-Royal, 75679, Paris 14, France.,Université de Paris Cité Institut Cochin, U1016, INSERM, CNRS, F-75014, Paris, France
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38
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Whittaker J. Dietary trends and the decline in male reproductive health. Hormones (Athens) 2023; 22:165-197. [PMID: 36725796 DOI: 10.1007/s42000-023-00431-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 01/16/2023] [Indexed: 02/03/2023]
Abstract
Over the twentieth century, male reproductive health has suffered a substantial decline, as evidenced by decreases in sperm counts and testosterone levels and increases in reproductive pathologies. At the same time, the prevalence of chronic diseases such as obesity, diabetes, and metabolic syndrome has risen dramatically. Metabolic and reproductive health are highly interconnected, suggesting that their respective trends are intertwined and, given the timeframe of such trends, environmental and not genetic factors are most likely to be the primary causes. Industrialization, which began in Europe in the mid-eighteenth century, has resulted in profound changes to our diet, lifestyle, and environment, many of which are causal factors in the rise in chronic diseases. Industrialization results in a nutrition transition from an agricultural unprocessed to a modern processed diet, incorporating increases in sugar, vegetable oils, ultra-processed foods, linoleic acid, trans-fats, and total energy. This dietary shift has incurred numerous adverse effects on metabolic and reproductive health, characterized by chronic inflammation, oxidative stress, and insulin resistance. Moreover, these effects appear to multiply across subsequent generations via epigenetic inheritance. Men's fertility is markedly affected by obesity and diabetes, with an increase in total energy via processed food intake arguably being the key factor driving the diabesity pandemic. In contrast, wholefoods rich in micronutrients and phytonutrients support male fertility and a healthy body weight. Therefore, men wanting to maximize their fertility should consider making positive dietary changes, such as replacing processed foods with unprocessed foods that support metabolic and reproductive health.
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Affiliation(s)
- Joseph Whittaker
- The School of Allied Health and Community, University of Worcester, Henwick Grove, Worcester, WR2 6AJ, UK.
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Xiong YW, Tan LL, Zhang J, Zhu HL, Zheng XM, Chang W, Gao L, Wei T, Xu DX, Wang H. Combination of high-fat diet and cadmium impairs testicular spermatogenesis in an m6A-YTHDF2-dependent manner. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 313:120112. [PMID: 36084736 DOI: 10.1016/j.envpol.2022.120112] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 08/16/2022] [Accepted: 09/01/2022] [Indexed: 06/15/2023]
Abstract
Environmental cadmium (Cd) or high-fat diet (HFD) exposure alone are risk factors of male infertility. However, the effect and mechanism of co-exposure to HFD and Cd on sperm quality remain unclear. This study was aimed to explore the combined effects of HFD and Cd on spermatogenesis as well as its m6A-dependent mechanism in vivo and in vitro. As a result, co-exposure of HFD and Cd resulted in a significant decrease in the number of mature testicular seminiferous tubules and epididymis sperm quantity in mice, compared with Cd or HFD exposure alone. Correspondingly, the mRNAs expression of Smc3(spermatocytes marker), Acrv1(round spermatids marker) and Lzumo3(elongated spermatids marker) were downregulated in HFD and Cd group. Furthermore, combined exposure downregulated the expression of meiosis-related proteins (STRA8 and SYCP3), increased the m6A level of Stra8, and upregulated the expression of m6A-related proteins (METTL3 and YTHDF2) in mouse spermatocytes. Mechanistically, the above-mentioned impacts caused by co-exposure were markedly restored by Mettl3 siR and Ythdf2 siR. In addition, RNA stability assay showed that Ythdf2 siR obviously reversed co-exposure-increased Stra8 mRNA degradation rate in actinomycin-D-treated mouse spermatocytes. Meanwhile, excess ROS was observed in combined-exposure group, and a free radical scavenger N-tert-Butyl-α-phenylnitrone (PBN) attenuated co-exposure-upregulated expression of METTL3 and YTHDF2 in mouse spermatocytes. These results suggested that combination of HFD and Cd impaired spermatogenesis by degrading Stra8 in an m6A-YTHDF2-dependent manner via ROS activation.
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Affiliation(s)
- Yong-Wei Xiong
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Lu-Lu Tan
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Jin Zhang
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Hua-Long Zhu
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Xin-Mei Zheng
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Wei Chang
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Lan Gao
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Tian Wei
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - De-Xiang Xu
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, China
| | - Hua Wang
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, China.
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40
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Andersen E, Juhl CR, Kjøller ET, Lundgren JR, Janus C, Dehestani Y, Saupstad M, Ingerslev LR, Duun OM, Jensen SBK, Holst JJ, Stallknecht BM, Madsbad S, Torekov SS, Barrès R. Sperm count is increased by diet-induced weight loss and maintained by exercise or GLP-1 analogue treatment: a randomized controlled trial. Hum Reprod 2022; 37:1414-1422. [PMID: 35580859 PMCID: PMC9247415 DOI: 10.1093/humrep/deac096] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 03/25/2022] [Indexed: 01/11/2023] Open
Abstract
STUDY QUESTION Does diet-induced weight loss improve semen parameters, and are these possible improvements maintained with sustained weight loss? SUMMARY ANSWER An 8-week low-calorie diet-induced weight loss was associated with improved sperm concentration and sperm count, which were maintained after 1 year in men who maintained weight loss. WHAT IS KNOWN ALREADY Obesity is associated with impaired semen quality. Weight loss improves metabolic health in obesity, but there is a lack of knowledge on the acute and long-term effects of weight loss on semen parameters. STUDY DESIGN, SIZE, DURATION This is a substudy of men with obesity enrolled in a randomized, controlled, double-blinded trial (the S-LITE trial). The trial was conducted between August 2016 and November 2019. A total of 56 men were included in the study and assigned to an initial 8-week low-calorie diet (800 kcal/day) followed by randomization to 52 weeks of either: placebo and habitual activity (placebo), exercise training and placebo (exercise), the Glucagon Like Peptide 1 (GLP-1) analogue liraglutide and habitual activity (liraglutide) or liraglutide in combination with exercise training (combination). PARTICIPANTS/MATERIALS, SETTING, METHODS Inclusion criteria were men who delivered semen samples, 18 to 65 years of age, and a body mass index between 32 and 43 kg/m2, but otherwise healthy. The study was carried out at Hvidovre Hospital and at the University of Copenhagen, and the participants were from the Greater Copenhagen Area. We assessed semen parameters and anthropometrics and collected blood samples before (T0), after the 8-week low-calorie dietary intervention (T1), and after 52 weeks (T2). MAIN RESULTS AND THE ROLE OF CHANCE The men lost on average 16.5 kg (95% CI: 15.2-17.8) body weight during the low-calorie diet, which increased sperm concentration 1.49-fold (95% CI: 1.18-1.88, P < 0.01) and sperm count 1.41-fold (95% CI: 1.07-1.87, P < 0.01). These improvements were maintained for 52 weeks in men who maintained the weight loss, but not in men who regained weight. Semen volume, sperm motility and motile sperm count did not change. LIMITATIONS, REASONS FOR CAUTION The S-LITE trial was a randomized controlled trial of weight loss maintenance. Analysis of semen was preregistered to explore the effects of weight loss and weight loss maintenance on semen parameters, but definite inferences cannot be made. WIDER IMPLICATIONS OF THE FINDINGS This study shows that sperm concentration and sperm count were improved after a diet-induced weight loss in men with obesity. Our findings indicate that either or both liraglutide and exercise as weight maintenance strategies may be used to maintain the improvements in sperm concentration and count. STUDY FUNDING/COMPETING INTEREST(S) This work is supported by an excellence grant from the Novo Nordisk Foundation (NNF16OC0019968), a Challenge Programme Grant from the Novo Nordisk Foundation (NNF18OC0033754) and a grant from Helsefonden. The Novo Nordisk Foundation Center for Basic Metabolic Research is an independent research centre at the University of Copenhagen, partially funded by an unrestricted donation from the Novo Nordisk Foundation (NNF18CC0034900). Saxenda (liraglutide) and placebo pens were provided by Novo Nordisk. Cambridge Weight Plan diet products for the 8-week low-calorie diet were provided by Cambridge Weight Plan. E.A.: shareholder, employee of ExSeed Health Ltd. Grant Recipient from ExSeed Health Ltd and listed on Patents planned, issued or pending with ExSeed Health Ltd; J.J.H.: consultant for Eli Lilly A/S and Novo Nordisk A/S. Lecture fees for Novo Nordisk A/S. Listed on Patents planned, issued or pending with the University of Copenhagen, Advocacy group for Antag Therapeutics and Bainan Biotech; S.M.: lecture fees for Novo Nordisk A/S. Recipient of Support for attending meetings from Novo Nordisk A/S. Advisory boards of Novo Nordisk A/S; Sanofi Aventis and Merck Sharp & Dohme. S.S.T.: research grant recipient Novo Nordisk. The remaining authors have no conflicts of interest to declare. TRIAL REGISTRATION NUMBER The trial was approved by the Ethical Committee of the Capital Region of Denmark (H-16027082) and the Danish Medicines Agency (EudraCT Number: 2015-005585-32). ClinicalTrials.gov identifier (NCT number): NCT04122716. TRIAL REGISTRATION DATE 11 May 2016. DATE OF FIRST PATIENT’S ENROLMENT August 2016.
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Affiliation(s)
| | | | - Emma T Kjøller
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Julie R Lundgren
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Charlotte Janus
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Yasmin Dehestani
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Marte Saupstad
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Lars R Ingerslev
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Olivia M Duun
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Simon B K Jensen
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jens J Holst
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark,Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Bente M Stallknecht
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Sten Madsbad
- Department of Endocrinology, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark
| | - Signe S Torekov
- Correspondence address. Mærsk Tower 7.7, Blegdamsvej 3B, 2200 Copenhagen N, Denmark. Tel: +45-35-33-72-88; E-mail: (R.B.); Department of Biomedical Sciences, Faculty of Health Sciences, University of Copenhagen, Panum 12.4.08, Blegdamsvej 3B, DK-2200 Copenhagen N, Denmark. Tel: +45-22-98-38-27; E-mail: (S.S.T.)
| | - Romain Barrès
- Correspondence address. Mærsk Tower 7.7, Blegdamsvej 3B, 2200 Copenhagen N, Denmark. Tel: +45-35-33-72-88; E-mail: (R.B.); Department of Biomedical Sciences, Faculty of Health Sciences, University of Copenhagen, Panum 12.4.08, Blegdamsvej 3B, DK-2200 Copenhagen N, Denmark. Tel: +45-22-98-38-27; E-mail: (S.S.T.)
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Boursier A, Dumont A, Boitrelle F, Prasivoravong J, Lefebvre-Khalil V, Robin G, Barbotin AL. Necrozoospermia: The tree that hides the forest. Andrology 2022; 10:642-659. [PMID: 35246969 DOI: 10.1111/andr.13172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 02/21/2022] [Accepted: 02/28/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND Necrozoospermia is a condition found in 0.2 to 0.4 % of male infertility cases. The causes of necrozoospermia are multiple: they can be related to testicular and/or post-testicular damage. Additionally, these causes most often involve the production of reactive oxygen species (ROS) and/or sperm DNA fragmentation (SDF) which can reduce the chances of spontaneous pregnancy or affect the outcome of assisted reproductive technologies. OBJECTIVE To focus on potential etiologies of necrozoospermia, its diagnosis and its therapeutic management especially before the employment of ICSI. METHODS Authors searched PubMed/Medline, Web of Science, Cochrane Library, Google and Institutional websites for medical subheading terms and free text words referred to "necrozoospermia", "sperm vitality", "sperm viability", "sperm DNA fragmentation" and "ICSI". RESULTS We identified twelve main etiologies of necrozoospermia responsible for either a decrease of sperm vitality, a mild a moderate or a severe necrozoospermia. In case of a confirmed decreased vitality, a thorough check-up should be conducted and if available, etiological treatment should be proposed. Therapeutic management could also include repeated ejaculations, drug treatments, the use of ICSI with ejaculated or surgically extracted spermatozoa in case of a non-treatable necrozoospermia. DISCUSSION AND CONCLUSION The potential causes of necrozoospermia should be investigated because many of them could be corrected, thus avoiding the use of ICSI. Moreover, if ICSI procedure remains necessary, the therapeutic management of necrozoospermia could also improve the chances of success by reducing oxidative stress and/or sperm DNA fragmentation. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Angele Boursier
- Institut de Biologie de La Reproduction-Spermiologie-CECOS, Hôpital Jeanne de Flandre, CHU Lille, Lille, F-59000, France
| | - A Dumont
- Service de Gynécologie Endocrinienne et Médecine de La Reproduction, Assistance Médicale à La Procréation et Préservation de La Fertilité, Hôpital Jeanne de Flandre, Avenue Eugène Avinée, CHU Lille, Lille, F-59000, France
| | - F Boitrelle
- Service de Biologie de la Reproduction et de Cytogénétique, Centre Hospitalier Poissy-Saint-Germain-en-Laye, Poissy, 78303, France
| | | | - V Lefebvre-Khalil
- Institut de Biologie de La Reproduction-Spermiologie-CECOS, Hôpital Jeanne de Flandre, CHU Lille, Lille, F-59000, France
| | - Geoffroy Robin
- Service de Gynécologie Endocrinienne et Médecine de La Reproduction, Assistance Médicale à La Procréation et Préservation de La Fertilité, Hôpital Jeanne de Flandre, Avenue Eugène Avinée, CHU Lille, Lille, F-59000, France.,Service d'Andrologie, Hôpital Huriez, CHU Lille, Lille, F-59000, France.,EA 4308 Gamètogenèse Et Qualité du Gamète, Université de Lille Et CHU de Lille, Lille, F-59000, France
| | - Anne-Laure Barbotin
- Institut de Biologie de La Reproduction-Spermiologie-CECOS, Hôpital Jeanne de Flandre, CHU Lille, Lille, F-59000, France.,EA 4308 Gamètogenèse Et Qualité du Gamète, Université de Lille Et CHU de Lille, Lille, F-59000, France
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Bian H, Mínguez-Alarcón L, Salas-Huetos A, Bauer D, Williams PL, Souter I, Attaman J, Chavarro JE. Male waist circumference in relation to semen quality and partner infertility treatment outcomes among couples undergoing infertility treatment with assisted reproductive technologies. Am J Clin Nutr 2022; 115:833-842. [PMID: 34734234 PMCID: PMC8895222 DOI: 10.1093/ajcn/nqab364] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 11/01/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Male obesity has been related to poor semen quality and may also have a negative effect on assisted reproductive technologies (ART) outcomes. Whether male waist circumference (WC), as a measure of central obesity, impacts a couple's fertility independently of BMI is unclear. OBJECTIVES To examine the associations of male WC with semen quality and couples' outcomes of infertility treatment with ART. METHODS Couples presenting to the Massachusetts General Hospital Fertility Center were invited to participate in the study. Between 2009 and 2019, 269 males provided 671 semen samples and 176 couples underwent 317 ART cycles. Height, weight, and WC were measured on site. We analyzed the association of male WC with semen quality and pregnancy outcomes using cluster-weighted regression models to account for repeated observations while adjusting for potential confounders. Models were also stratified by male BMI (<25 kg/m2 compared with ≥25 kg/m2). RESULTS The median male age, WC, and BMI were 36.1 years, 96.0 cm, and 26.8 kg/m2, respectively. A 5-cm increase in WC was associated with a 6.3% (95% CI, 2.1-10.5%) lower sperm concentration after adjustment for potential confounders, including BMI. Male WC was also inversely related to the probability of achieving a live birth. For each 5-cm increase in male WC, the odds of a live birth per initiated cycle decreased by 9.0% (95% CI, 1.1%-16.4%) after accounting for several anthropometric and demographic characteristics of both partners. These associations were stronger among males in the normal BMI category (<25 kg/m2) than among overweight or obese males. CONCLUSIONS A higher male WC may be an additional risk factor for poor outcomes of infertility treatment, even after accounting for male and female partner BMIs, particularly in couples where the male partner has a normal BMI.
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Affiliation(s)
- Haiyang Bian
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Institute of Reproductive and Child Health and Department of Epidemiology and Biostatistics, Peking University School of Public Health, Beijing, China
| | - Lidia Mínguez-Alarcón
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Albert Salas-Huetos
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - David Bauer
- Harvard Extension School, Cambridge, MA, USA
| | - Paige L Williams
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Irene Souter
- Vincent Obstetrics and Gynecology, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Jill Attaman
- Vincent Obstetrics and Gynecology, Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Jorge E Chavarro
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Channing Division of Network Medicine, Harvard Medical School & Brigham and Women's Hospital, Boston, MA, USA
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Qian H, Xu Q, Yan W, Fan Y, Li Z, Tao C, Zhang F, Lu C. Association between exposure to ambient air pollution and semen quality in adults: a meta-analysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:10792-10801. [PMID: 34532803 DOI: 10.1007/s11356-021-16484-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 09/07/2021] [Indexed: 06/13/2023]
Abstract
Air pollution has become a global concern and may be hazardous to human reproductive capacity, but the impact of exposure to air pollutants on semen quality remains controversial. We performed the meta-analysis to examine the association between air pollution exposure and semen quality. We searched PubMed, Web of Science Core Collection, and Cochrane Library databases (before December 2019). We selected original epidemiological studies on humans, written and published in English, that provided quantitative information to determine the associations between air pollution and sperm parameters. A random-effects model was used when the pooled effect estimates were found to be heterogeneous (I2 > 50% or P < 0.05), otherwise, a fixed-effects model was applied. Publication bias was not evaluated for less than 10 included articles. Our meta-analysis showed that the standardised mean differences (SMDs) (95% confidence interval, 95% CI) of sperm concentration, sperm count, and sperm total motility were -0.17 (-0.20, -0.13), -0.05 (-0.08, -0.02), and -0.33 (-0.54, -0.11), respectively. However, exposure to air pollution was not related to sperm progressive motility (SMD = 0.00, 95% CI: -0.13, 0.12). The results indicated that exposure to air pollutants at a higher level was associated with impaired semen quality, including declined sperm concentration, reduced sperm count, and declined total motility. The results suggested that high level of air pollution exposure had a negative effect on semen quality. Improvement of air quality is important for enhancing semen quality.
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Affiliation(s)
- Hong Qian
- State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Qiaoqiao Xu
- State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Wenkai Yan
- State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Yun Fan
- State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Zhi Li
- State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Chengzhe Tao
- State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Feng Zhang
- State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
| | - Chuncheng Lu
- State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
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APOE Polymorphism and Endocrine Functions in Subjects with Morbid Obesity Undergoing Bariatric Surgery. Genes (Basel) 2022; 13:genes13020222. [PMID: 35205269 PMCID: PMC8871864 DOI: 10.3390/genes13020222] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/18/2022] [Accepted: 01/23/2022] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Obesity is an interplay between genes and the environment, including lifestyle. The genetics of obesity is insufficiently understood. Apolipoprotein E (APOE) genetic polymorphism has been associated with a wide range of disorders. Knowing that some APOE alleles are associated with obesity and endocrine disorders that are common in obesity, the present study aimed at exploring associations between APOE polymorphisms and endocrine functions in subjects with obesity undergoing bariatric surgery. METHODS Analyses of hormones in blood collected before and one year after bariatric surgery were examined. The APOE alleles were grouped as follows: E2 = ε2ε2 + ε2ε3; E3 = ε3ε3 + ε2ε4; E4 = ε3ε4 + ε4ε4. The APOE groups were analysed as nominal and ordered groups (E2-E3-E4) with a linear mixed model to predict the hormonal effects of the groups. RESULTS Forty-nine women (79%) and thirteen (21%) men with a mean age of 47.7 (SD 8.5) years were included in the study. The adiponectin level was significantly lower (p < 0.05) in the E2 group compared with the E4 group. Adiponectin and cortisol were positively and negatively associated, respectively, with the ordered APOE groups. CONCLUSIONS The ordered APOE groups E2-E3-E4 were significantly associated with high and low levels of adiponectin and cortisol, respectively. The findings indicate APOE-mediated effects on body weight and metabolic functions in subjects with morbid obesity.
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Ping T, Zheng M, Zhang P, Yan T, Miao X, Wang K, Lian K. Determination of 12 anti-obesity drugs in human plasma by a 96-well protein precipitation plate using HPLC-MS. RSC Adv 2022; 12:26016-26022. [PMID: 36199600 PMCID: PMC9469181 DOI: 10.1039/d2ra03423a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 09/06/2022] [Indexed: 11/21/2022] Open
Abstract
A 96-well protein precipitation plate combined with HPLC-MS/MS was developed for the determination of 12 anti-obesity drugs in human plasma; the detection method showed high throughout and high sensitivity with suitable recovery.
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Affiliation(s)
- Tengteng Ping
- School of Public Health, Hebei Medical University, Shijiazhuang, 050017, China
| | - Min Zheng
- Jinan Centre for Disease Control and Prevention, Jinan, 250000, China
| | - Pingping Zhang
- Department of Reproductive Genetic Family, Hebei General Hospital, Shijiazhuang, Hebei, 050000, China
| | - Tianhao Yan
- School of Public Health, Hebei Medical University, Shijiazhuang, 050017, China
| | - Xufeng Miao
- Physical Education Department, Hebei Medical University, Shijiazhuang, 050017, China
| | - Ke Wang
- Shijiazhuang Centre for Disease Control and Prevention, Shijiazhuang, 050011, China
| | - Kaoqi Lian
- School of Public Health, Hebei Medical University, Shijiazhuang, 050017, China
- Hebei Key Laboratory of Environment and Human Health, Shijiazhuang, 050017, China
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Akram M, Ali SA, Behare P, Kaul G. Dietary intake of probiotic fermented milk benefits the gut and reproductive health in mice fed with an obesogenic diet. Food Funct 2021; 13:737-752. [PMID: 34939079 DOI: 10.1039/d1fo02501e] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Probiotics have been suggested as alternatives to pharmacological drugs in the treatment of a variety of medical problems, including obesity management, which is often linked to low sperm production. Also, probiotic fermented products are known to boost host immune response, immunosenescence, infection tolerance, and redox homeostasis, but their direct role in male fertility has been less investigated. This study assessed the effect of two probiotic strains, L. fermentum NCDC 400 and L. rhamnosus NCDC 610, and fructooligosaccharide (FOS) fermented milk supplementation. We identified the significantly reduced oxidative stress markers in the plasma and liver of HF diet-fed animals. We determined the role of key testicular enzymes of steroidogenic pathway genes StAR, P450scc, and 17βHSD in maintaining the testosterone concentration and restoring testicular structures. In conclusion, the present work illustrated the ability of both probiotics L. fermentum NCDC 400 and L. rhamnosus NCDC 610 as regulatory agents with beneficial effects on weight loss and endogenous testosterone with substantially improved sperm motility in male diet-induced obesity (DIO) models. Our findings indicate that fermented milk supplementation may be an alternative treatment for preventing obesity and other related metabolic syndromes.
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Affiliation(s)
- Mohd Akram
- Semen Biology Lab, Animal Biochemistry Division, National Dairy Research Institute, Haryana, India
| | - Syed Azmal Ali
- Cell Biology and Proteomics Lab, National Dairy Research Institute, Haryana, India
| | - Pradip Behare
- National Collection of Dairy Cultures (NCDC) Lab, Dairy Microbiology Division, ICAR, National Dairy Research Institute, Karnal, Haryana, India
| | - Gautam Kaul
- Semen Biology Lab, Animal Biochemistry Division, National Dairy Research Institute, Haryana, India
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Crisóstomo L, Videira RA, Jarak I, Starčević K, Mašek T, Rato L, Raposo JF, Batterham RL, Oliveira PF, Alves MG. Inherited Metabolic Memory of High-fat Diet Impairs Testicular Fatty Acid Content and Sperm Parameters. Mol Nutr Food Res 2021; 66:e2100680. [PMID: 34939729 DOI: 10.1002/mnfr.202100680] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 09/29/2021] [Indexed: 11/08/2022]
Abstract
Exposure to a high-fat diet (HFD) from early-life is associated with a testicular metabolic signature linked to abnormal sperm parameters up to two generations after exposure in mice. Hereby, we describe a testicular lipid signature associated with "inherited metabolic memory" of exposure to HFD, persisting up to two generations in mice. Diet-challenged mice (n = 36) were randomly fed after weaning with standard chow (CTRL); HFD for 200 days or transient HFD (HFDt ) (60 days of HFD+140 days of standard chow). Subsequent generations (36 mice per generation) were fed with chow diet. Mice were euthanized 200 days post-weaning. Glucose homeostasis, serum hormones, testicular bioenergetics and antioxidant enzyme activity were evaluated. Testicular lipid-related metabolites and fatty acids were characterized by 1 H-NMR and GC-MS. Sons of HFD display impaired choline metabolism, mitochondrial activity and antioxidant defenses, while grandsons show a shift in testicular ω3/ω6 ratio towards a pro-inflammatory environment. Grandsons of HFDt raise 3-hydroxybutyrate levels with possible implications to testicular insulin resistance. Sperm counts decrease in grandsons of HFD-exposed mice, regardless of the duration of exposure. HFD-induced "inherited metabolic memory" alters testicular fatty acid metabolism with consequences to sperm parameters up to two generations. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Luís Crisóstomo
- Department of Anatomy, and Unit for Multidisciplinary Research in Biomedicine (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Portugal.,Laboratory for Integrative and Translational Research in Population Health (ITR), University of Porto, Portugal
| | - Romeu A Videira
- REQUINTE/LAQV, Laboratory of Pharmacognosy, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Ivana Jarak
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, Portugal
| | - Kristina Starčević
- Department of Chemistry and Biochemistry, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
| | - Tomislav Mašek
- Department of Animal Nutrition and Dietetics, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
| | - Luís Rato
- Health School of the Polytechnic Institute of Guarda, Guarda, Portugal
| | - João F Raposo
- NOVA Medical School - New University Lisbon, Lisbon, Portugal.,APDP - Diabetes Portugal, Lisbon, Portugal
| | - Rachel L Batterham
- UCL Centre for Obesity Research, Division of Medicine, University College London, London, UK.,National Institute of Health Research, UCLH Biomedical Research Centre, London, UK
| | - Pedro F Oliveira
- QOPNA & LAQV, Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | - Marco G Alves
- Department of Anatomy, and Unit for Multidisciplinary Research in Biomedicine (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Portugal.,Laboratory for Integrative and Translational Research in Population Health (ITR), University of Porto, Portugal
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Hunter E, Avenell A, Maheshwari A, Stadler G, Best D. The effectiveness of weight-loss lifestyle interventions for improving fertility in women and men with overweight or obesity and infertility: A systematic review update of evidence from randomized controlled trials. Obes Rev 2021; 22:e13325. [PMID: 34390109 DOI: 10.1111/obr.13325] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 07/02/2021] [Accepted: 07/02/2021] [Indexed: 01/05/2023]
Abstract
Being overweight or obese can have a negative impact on fertility outcomes. This systematic review updates randomized controlled trial (RCT) findings on the effectiveness of weight loss interventions in reducing weight and improving reproductive outcomes of women and men with overweight or obesity and infertility. Eligible studies, published since the last review, were identified by searching databases from March 20, 2016 until March 31, 2020. RCTs involving any type of lifestyle intervention were considered. Eight RCTs were identified and aggregated with seven RCTs included in our previous review. Meta-analyses revealed that women randomized to a combined diet and exercise intervention were more likely to become pregnant, risk ratio (RR) = 1.87 (95% CI 1.20, 2.93) and achieve a live birth RR = 2.20 (95% CI 1.23, 3.94), compared to women in control groups who received no or minimal intervention. This pattern was not replicated in trials where control groups received immediate access to assisted reproductive technology (ART). No eligible randomized trials involving men were identified. Data were largely obtained from small scale studies. Better designed, adequately powered, robust randomized trials are needed to better understand the effect of weight loss interventions on reproductive outcomes in both women and men.
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Affiliation(s)
- Emma Hunter
- Institute of Applied Health Sciences, University of Aberdeen, Aberdeen, UK
| | - Alison Avenell
- Health Services Research Unit, University of Aberdeen, Aberdeen, UK
| | - Abha Maheshwari
- Aberdeen Fertility Centre, Aberdeen Maternity Hospital, Aberdeen, UK
| | - Gertraud Stadler
- Institute of Gender in Medicine, Charité University Berlin, Germany & Institute of Applied Health Sciences, University of Aberdeen, Aberdeen, UK
| | - Damian Best
- Faculty of Medical Sciences, University of the West Indies, Bridgetown, Barbados
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Hernáez Á, Rogne T, Skåra KH, Håberg SE, Page CM, Fraser A, Burgess S, Lawlor DA, Magnus MC. Body mass index and subfertility: multivariable regression and Mendelian randomization analyses in the Norwegian Mother, Father and Child Cohort Study. Hum Reprod 2021; 36:3141-3151. [PMID: 34668019 PMCID: PMC8600658 DOI: 10.1093/humrep/deab224] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 09/10/2021] [Indexed: 01/29/2023] Open
Abstract
STUDY QUESTION What is the association between BMI and subfertility? SUMMARY ANSWER We observed a J-shaped relationship between BMI and subfertility in both sexes, when using both a standard multivariable regression and Mendelian randomization (MR) analysis. WHAT IS KNOWN ALREADY High BMI in both women and men is associated with subfertility in observational studies and this relationship is further substantiated by a few small randomized controlled trials of weight reduction and success of assisted reproduction. Women with low BMI also have lower conception rates with assisted reproduction technologies. STUDY DESIGN, SIZE, DURATION Cohort study (the Norwegian Mother, Father and Child Cohort Study), 28 341 women and 26 252 men, recruited from all over Norway between 1999 and 2008. PARTICIPANTS/MATERIALS, SETTING, METHODS Women (average age 30, average BMI 23.1 kg/m2) and men (average age 33, average BMI 25.5 kg/m2) had available genotype data and provided self-reported information on time-to-pregnancy and BMI. A total of 10% of couples were subfertile (time-to-pregnancy ≥12 months). MAIN RESULTS AND THE ROLE OF CHANCE Our findings support a J-shaped association between BMI and subfertility in both sexes using multivariable logistic regression models. Non-linear MR validated this relationship. A 1 kg/m2 greater genetically predicted BMI was linked to 18% greater odds of subfertility (95% CI 5% to 31%) in obese women (≥30.0 kg/m2) and 15% lower odds of subfertility (-24% to -2%) in women with BMI <20.0 kg/m2. A 1 kg/m2 higher genetically predicted BMI was linked to 26% greater odds of subfertility (8-48%) among obese men. Low genetically predicted BMI values were also related to greater subfertility risk in men at the lower end of the BMI distribution. A genetically predicted BMI of 23 and 25 kg/m2 was linked to the lowest subfertility risk in women and men, respectively. LIMITATIONS, REASONS FOR CAUTION The main limitations of our study were that we did not know whether the subfertility was driven by the women, men or both; the exclusive consideration of individuals of northern European ancestry; and the limited amount of participants with obesity or BMI values <20.0 kg/m2. WIDER IMPLICATIONS OF THE FINDINGS Our results support a causal effect of obesity on subfertility in women and men. Our findings also expand the current evidence by indicating that individuals with BMI values <20 kg/m2 may have an increased risk of subfertility. These results suggest that BMI values between 20 and 25 kg/m2 are optimal for a minimal risk of subfertility. STUDY FUNDING/COMPETING INTEREST(S) The MoBa Cohort Study is supported by the Norwegian Ministry of Health and Care Services and the Norwegian Ministry of Education and Research. This project received funding from the European Research Council under the European Union's Horizon 2020 research and innovation program (grant agreement No 947684). It was also partly supported by the Research Council of Norway through its Centres of Excellence funding scheme, project number 262700. Open Access funding was provided by the Folkehelseinstituttet/Norwegian Institute of Public Health. D.A.L. is a UK National Institute for Health Research Senior Investigator (NF-SI-0611-10196) and is supported by the US National Institutes of Health (R01 DK10324) and a European Research Council Advanced Grant (DevelopObese; 669545). The funders had no role in the collection, analysis and interpretation of data; in the writing of the report; or in the decision to submit the article for publication. D.A.L. receives (or has received in the last 10 years) research support from National and International government and charitable bodies, Roche Diagnostics and Medtronic for research unrelated to the current work. The rest of the authors declare that no competing interests exist. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- Álvaro Hernáez
- Centre for Fertility and Health, Norwegian Institute of Public Health, Oslo, Norway
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
- Blanquerna School of Health Sciences, Universitat Ramon Llull, Barcelona, Spain
| | - Tormod Rogne
- Department of Chronic Disease Epidemiology, Yale University School of Public Health, New Haven, CT, USA
- Department of Circulation and Medical Imaging, Gemini Center for Sepsis Research, NTNU Norwegian University of Science and Technology, Trondheim, Norway
- Clinic of Anaesthesia and Intensive Care, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Karoline H Skåra
- Centre for Fertility and Health, Norwegian Institute of Public Health, Oslo, Norway
| | - Siri E Håberg
- Centre for Fertility and Health, Norwegian Institute of Public Health, Oslo, Norway
| | - Christian M Page
- Centre for Fertility and Health, Norwegian Institute of Public Health, Oslo, Norway
- Department of Mathematics, University of Oslo, Oslo, Norway
| | - Abigail Fraser
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol, UK
- Population Health Science, Bristol Medical School, University of Bristol, Bristol, UK
- NIHR Bristol Biomedical Research Centre, Bristol, UK
| | - Stephen Burgess
- MRC Biostatistics Unit, University of Cambridge, Cambridge, UK
- Cardiovascular Epidemiology Unit, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Deborah A Lawlor
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol, UK
- Population Health Science, Bristol Medical School, University of Bristol, Bristol, UK
- NIHR Bristol Biomedical Research Centre, Bristol, UK
| | - Maria Christine Magnus
- Centre for Fertility and Health, Norwegian Institute of Public Health, Oslo, Norway
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol, UK
- Population Health Science, Bristol Medical School, University of Bristol, Bristol, UK
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Kleshchev M, Osadchuk A, Osadchuk L. Impaired semen quality, an increase of sperm morphological defects and DNA fragmentation associated with environmental pollution in urban population of young men from Western Siberia, Russia. PLoS One 2021; 16:e0258900. [PMID: 34679097 PMCID: PMC8535459 DOI: 10.1371/journal.pone.0258900] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 10/08/2021] [Indexed: 01/01/2023] Open
Abstract
Poor sperm morphology and an elevated DNA fragmentation level are considered to be related to spermiogenesis malfunctions as a result of genetic mutations and effects of environmental factors, including industrial pollution. Standardized cross-sectional population studies of sperm morphology defects and sperm DNA fragmentation, especially in regions with increased environmental pollution may be helpful to investigate an influence of industrial pollution and other population-related factors on spermiogenesis process. The aim of present study was to estimate an influence industrial pollution on sperm morphogenesis and sperm DNA fragmentation in men from the general population of the Western Siberia. The Novosibirsk and Kemerovo cities are located to same climatic conditions in Western Siberia but the Kemerovo city is characterized by increased environmental pollution especially by particulate matter (PM). The male volunteers living in Novosibirsk (n = 278) and Kemerovo (n = 258) were enrolled. Percentages of sperm morphological defects are counted after staining native ejaculate smears by Diff-Quick kits. DNA fragmentation was estimated by a SCSA technique. The residents of Kemerovo were characterized by lowered sperm count and sperm motility, elevated DNA fragmentation, poor sperm morphology and increased incidence of morphological effects of head (pyriform, elongated, round, abnormal acrosome and vacuolated chromatine), asymmetrical neck insertion and excess residual cytoplasm. Moreover, elevated DNA fragmentation was associated with lowered sperm count, sperm motility and increased percentages of several sperm morphology defects, with the place of residence affecting the relationships between conventional semen parameters, sperm morphology and DNA fragmentations. Our study suggests that excessive sperm head elongation and impaired acrosome formation can contribute to sperm morphology deterioration in men from polluted areas. Regional features in the relationships between sperm morphology, sperm count and DNA fragmentation were shown, suggesting an importance of studying sperm morphology pattern in men from different regions.
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Affiliation(s)
- Maxim Kleshchev
- Department of Human Molecular Genetic, Federal Research Center ‘Institute of Cytology and Genetics’, the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
- * E-mail:
| | - Alexander Osadchuk
- Department of Human Molecular Genetic, Federal Research Center ‘Institute of Cytology and Genetics’, the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Ludmila Osadchuk
- Department of Human Molecular Genetic, Federal Research Center ‘Institute of Cytology and Genetics’, the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
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