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Dissanayake A. Monthly variations in semen parameters in a Sri Lankan population undergoing fertility evaluation. Clin Exp Reprod Med 2024; 51:120-124. [PMID: 38035588 PMCID: PMC11140258 DOI: 10.5653/cerm.2023.06240] [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: 05/31/2023] [Revised: 08/23/2023] [Accepted: 09/21/2023] [Indexed: 12/02/2023] Open
Abstract
OBJECTIVE Seasonal variations in semen quality are known to occur in temperate regions, but results regarding tropical areas remain inconclusive. The aim of this study was to determine whether monthly variations in semen parameters are present among men in a tropical region. METHODS Data were retrospectively collected from semen analyses of 3,000 men over a 10-year period, from 2012 to 2022. Analysis of variance and the independent-samples t-test were employed to observe variations in semen parameters throughout the entire period and between months, respectively. RESULTS The mean±standard deviation sperm concentration was significantly lower in June, at 42.5±31.4 million/mL, compared to other months. The highest sperm concentration was found in March, at 57.8±42.6 million/mL, constituting a mean difference of 15.3 million/mL between the lowest and highest concentrations. The total sperm count displayed a similar pattern of monthly variation, with a difference of 47.2 million between the highest and lowest months. No significant monthly differences were observed in other parameters, such as sperm motility, morphology, and semen volume. CONCLUSION Significant monthly variations in sperm concentration and total sperm count were evident in this Sri Lankan population. March, which displayed the highest sperm counts, is in the spring in temperate regions, while the month with the lowest counts, July, is part of the summer. Fluctuations in photoperiod appear to most strongly influence these variations.
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Affiliation(s)
- Anura Dissanayake
- Reproductive Medicine Unit, Department of Obstetrics and Gynecology, Faculty of Medicine, University of Kelaniya, Ragama, Sri Lanka
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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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Pakmanesh H, Nazarirobati N, Dabiri S, Mirshekari TR, Eslami N, Torabinavid P, Rouientan H, Narouie B. Impact of Season Variation on Semen Quality: A Comprehensive Retrospective Analysis of Data From Patients at an Eastern Iranian Tertiary Care Fertility Center Over a Decade. Am J Mens Health 2024; 18:15579883241237505. [PMID: 38509696 PMCID: PMC10956154 DOI: 10.1177/15579883241237505] [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: 01/09/2024] [Revised: 02/15/2024] [Accepted: 02/19/2024] [Indexed: 03/22/2024] Open
Abstract
Seasonal changes are assumed to affect various sperm characteristics based on photoperiods, temperature, and air pollution. According to the literature, most studies were performed on populations of Western countries, and there are limited studies performed in the Middle East with variable results. This study evaluated the seasonality of sperm characteristics among men of reproductive age in an andrology center in Kerman, Iran, where the seasonal temperature varies significantly, with average temperatures ranging from 50 °F (10 °C) to 75.2 °F (24 °C). We retrospectively evaluated the sperm analysis test record. Sperm samples were obtained from 2,948 men during 10 years, excluding those with azoospermia. Samples were assessed for volume, concentration, motility, and morphology according to the World Health Organization (WHO) criteria. We performed a comprehensive comparative literature review of the studies investigating the association between seasonal variation and sperm quality. The mean semen volume was higher in the summer compared with other seasons (p = .04). The mean percentage of sperm motility was higher in the spring and less in winter (p = .03). Sperm morphology-related parameters, measured by the percent of normal morphology, were significantly better in winter (p = .03). Our findings suggest seasonality of sperm characteristics among men of fertility age. Semen volume, motility, and morphology were affected by the photoperiod of reproductive seasons. Results might support the influential role of seasonal variations in the possibility of fertility, especially among those using assisted reproductive technologies and those with oligospermia.
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Affiliation(s)
- Hamid Pakmanesh
- Department of Urology, Kerman University of Medical Sciences, Kerman, Iran
| | | | - Shahriar Dabiri
- Department of Pathology, Kerman University of Medical Sciences, Kerman, Iran
| | | | - Nazanin Eslami
- Faculty of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - Parham Torabinavid
- Pediatric Urology and Regenerative Medicine Research Center, Gene, Cell and Tissue Department of Pediatric Urology and Regenerative Medicine Research Center, Children’s Medical Center, Pediatric Center of Excellence, Tehran University of Medical Science, Tehran, Iran
| | - Hamidreza Rouientan
- Urology and Nephrology Research Center, Department of Urology, Shahid Labbafinejad Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Behzad Narouie
- Urology and Nephrology Research Center, Department of Urology, Shahid Labbafinejad Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Department of Urology, Zahedan University of Medical Sciences, Zahedan, Iran
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Botelho-Fontela S, Ferreira S, Paixão G, Pereira-Pinto R, Vaz-Velho M, Pires MDA, Payan-Carreira R, Patarata L, Lorenzo JM, Silva JA, Esteves A. Seasonal Variations on Testicular Morphology, Boar Taint, and Meat Quality Traits in Traditional Outdoor Pig Farming. Animals (Basel) 2023; 14:102. [PMID: 38200834 PMCID: PMC10778027 DOI: 10.3390/ani14010102] [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: 11/28/2023] [Revised: 12/16/2023] [Accepted: 12/26/2023] [Indexed: 01/12/2024] Open
Abstract
Traditional outdoor pig farming is renowned for its emphasis on animal welfare and the production of highly valued, quality meat. While seasonality is known to impact certain animals, particularly those raised outdoors, there is a lack of research on Bísaro boars, a native Portuguese breed. This research study was conducted on a total of 20 male entire Bísaro pigs, reared in outdoor pens from 4 to 13 months old, and subsequently slaughtered. The animals were divided into two groups: one slaughtered in winter (Wi, n = 9), and the other in summer (Su, n = 11). The objective was to evaluate testicular morphometry, boar taint compounds, and meat quality traits, including sensory analysis and fatty acid profile. Testicles from the Su group exhibited reduced volume, indicating diminished functionality during that season. While no significant differences were observed in the boar taint compound analysis, panelists could discern a more intense aroma and flavor of boar taint in the Su meat. Other meat quality traits showed no significant variations, but the fatty acid profile displayed higher values in the Wi group. This study reveals that Bísaro boars experience reproductive seasonality, leading to variations in boar taint compounds across the seasons. This information is crucial for farm planning.
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Affiliation(s)
- Sofia Botelho-Fontela
- Animal and Veterinary Research Centre (CECAV), AL4AnimalS, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal; (S.F.); (G.P.); (M.d.A.P.); (L.P.); (J.A.S.); (A.E.)
| | - Sílvia Ferreira
- Animal and Veterinary Research Centre (CECAV), AL4AnimalS, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal; (S.F.); (G.P.); (M.d.A.P.); (L.P.); (J.A.S.); (A.E.)
| | - Gustavo Paixão
- Animal and Veterinary Research Centre (CECAV), AL4AnimalS, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal; (S.F.); (G.P.); (M.d.A.P.); (L.P.); (J.A.S.); (A.E.)
- CISAS—Center for Research and Development in Agrifood Systems and Sustainability, Instituto Politécnico de Viana do Castelo, 4900-347 Viana do Castelo, Portugal; (R.P.-P.); (M.V.-V.)
| | - Ricardo Pereira-Pinto
- CISAS—Center for Research and Development in Agrifood Systems and Sustainability, Instituto Politécnico de Viana do Castelo, 4900-347 Viana do Castelo, Portugal; (R.P.-P.); (M.V.-V.)
| | - Manuela Vaz-Velho
- CISAS—Center for Research and Development in Agrifood Systems and Sustainability, Instituto Politécnico de Viana do Castelo, 4900-347 Viana do Castelo, Portugal; (R.P.-P.); (M.V.-V.)
| | - Maria dos Anjos Pires
- Animal and Veterinary Research Centre (CECAV), AL4AnimalS, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal; (S.F.); (G.P.); (M.d.A.P.); (L.P.); (J.A.S.); (A.E.)
| | - Rita Payan-Carreira
- CHRC—Comprehensive Health Research Centre, Department of Veterinary Medicine, University of Évora, Pole at Mitra, 7002-554 Évora, Portugal;
| | - Luís Patarata
- Animal and Veterinary Research Centre (CECAV), AL4AnimalS, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal; (S.F.); (G.P.); (M.d.A.P.); (L.P.); (J.A.S.); (A.E.)
| | - José M. Lorenzo
- Centro Tecnológico de la Carne de Galicia 4, 32900 San Cibrao das Viñas, Spain;
| | - José A. Silva
- Animal and Veterinary Research Centre (CECAV), AL4AnimalS, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal; (S.F.); (G.P.); (M.d.A.P.); (L.P.); (J.A.S.); (A.E.)
| | - Alexandra Esteves
- Animal and Veterinary Research Centre (CECAV), AL4AnimalS, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal; (S.F.); (G.P.); (M.d.A.P.); (L.P.); (J.A.S.); (A.E.)
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Scaruffi P, Bovis F, Massarotti C, Maccarini E, Stigliani S, DE Leo C, Gazzo I, Sozzi F, Anserini P. Collecting semen samples at home for fertility assessment: time for a new standard? Minerva Obstet Gynecol 2023; 75:535-543. [PMID: 37140587 DOI: 10.23736/s2724-606x.23.05165-5] [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: 05/05/2023]
Abstract
BACKGROUND In fertility clinics the standard approach to semen collection involves a private room close to the laboratory to avoid fluctuations in temperature and to control the time between collection and processing. There are still no firm conclusions whether collecting semen at home has any influence on sperm quality and reproductive competence. The purpose of this study was to assess whether the site of semen collection affects semen parameters. METHODS This retrospective cohort study performed at a tertiary level public fertility center included 8634 semen samples from 5880 men undergoing fertility assessment from 2015 to 2021. The impact of sample collection site was evaluated using a generalized linear mixed model. A subgroup analysis comparing clinic to home collection within the same patient was performed on 1260 samples from 428 men by paired t-test or Wilcoxon Signed Rank Test. RESULTS Samples collected at home (N.=3240) had significantly higher semen volume, sperm concentration and total sperm count respect to samples collected at clinic (N.=5530) (median (range): 2.9 (0.0-13.9) mL versus 2.9 (0.0-11.5) mL, P=0.016; 24.0 (0.0-252.0) million/mL versus 18.0 (0.0-390.0), P<0.0001; 64.6 (0.0-946.0) million versus 49.3 (0.0-1045.0), P<0.0001, respectively). There was no difference in abstinence period and sperm motility. Paired comparisons of semen characteristics in 428 patients with home-collected (N.=583) and clinic-collected (N.=677) samples confirmed a no negative effect on volume and total sperm count. CONCLUSIONS Our data provide evidence for a not disadvantage with collection at home.
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Affiliation(s)
- Paola Scaruffi
- UOS Physiopathology of Human Reproduction, IRCCS Ospedale Policlinico San Martino, Genoa, Italy -
| | - Francesca Bovis
- Department of Health Sciences (DISSAL), University of Genoa, Genoa, Italy
| | - Claudia Massarotti
- UOS Physiopathology of Human Reproduction, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal-Child Health (DINOGMI), University of Genoa, Genoa, Italy
| | - Elena Maccarini
- UOS Physiopathology of Human Reproduction, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Sara Stigliani
- UOS Physiopathology of Human Reproduction, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Caterina DE Leo
- DINOGMI Department, Laboratory of Andrology, University of Genoa, Genoa, Italy
| | - Irene Gazzo
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal-Child Health (DINOGMI), University of Genoa, Genoa, Italy
| | - Fausta Sozzi
- UOS Physiopathology of Human Reproduction, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Paola Anserini
- UOS Physiopathology of Human Reproduction, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
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Deng X, Wang Q, Shi C, Wei J, Lv Z, Huang S, Duan YG, Zhang X, Liu Y. Heat wave exposure and semen quality in sperm donation volunteers: A retrospective longitudinal study in south China. ENVIRONMENTAL RESEARCH 2023; 236:116665. [PMID: 37451571 DOI: 10.1016/j.envres.2023.116665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/23/2023] [Accepted: 07/12/2023] [Indexed: 07/18/2023]
Abstract
BACKGROUND Previous studies have suggested an association between non-optimum ambient temperature and decreased semen quality. However, the effect of exposure to heat waves on semen quality remains unclear. METHODS Volunteers who intended to donate sperm in Guangdong provincial human sperm bank enrolled. Heat waves were defined by temperature threshold and duration, with a total of 9 definitions were employed, specifying daily mean temperature exceeding the 85th, 90th, or 95th percentile for at least 2, 3, or 4 consecutive days. Residential exposure to heat waves during 0-90 days before ejaculation was evaluated using a validated gridded dataset on ambient temperature. Association and potential windows of susceptibility were evaluated and identified using linear mixed models and distributed lag non-linear models. RESULTS A total of 2183 sperm donation volunteers underwent 8632 semen analyses from 2018 to 2019. Exposure to heat wave defined as daily mean temperature exceeding the 95th percentile for at least 4 consecutive days (P95-D4) was significantly associated with a 0.11 (95% confidence interval [CI]: 0.03, 0.18) ml, 3.36 (1.35, 5.38) × 106/ml, 16.93 (7.95, 25.91) × 106, and 2.11% (1.4%, 2.83%) reduction in semen volume, sperm concentration, total sperm number, and normal forms, respectively; whereas exposure to heat wave defined as P90-D4 was significantly associated with a 1.98% (1.47%, 2.48%) and 2.08% (1.57%, 2.58%) reduction in total motility and progressive motility, respectively. Sperm count and morphology were susceptible to heat wave exposure during the early stage of spermatogenesis, while sperm motility was susceptible to exposure during the late stage. CONCLUSION Heat wave exposure was significantly associated with a reduction in semen quality. The windows of susceptibility during 0-90 days before ejaculation varied across sperm count, motility, and morphology. Our findings suggest that reducing heat wave exposure before ejaculation may benefit sperm donation volunteers and those attempting to conceive.
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Affiliation(s)
- Xinyi Deng
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China
| | - Qiling Wang
- NHC Key Laboratory of Male Reproduction and Genetics, Guangdong Provincial Reproductive Science Institute, Guangdong Provincial Fertility Hospital, Guangzhou, Guangdong, 510600, China
| | - Chunxiang Shi
- Meteorological Data Laboratory, National Meteorological Information Center, Beijing, 100081, China
| | - Jing Wei
- Department of Atmospheric and Oceanic Science, Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, 20740, USA
| | - Ziquan Lv
- Central Laboratory of Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong, 518055, China
| | - Suli Huang
- Department of Environment and Health, Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong, 518055, China
| | - Yong-Gang Duan
- Shenzhen Key Laboratory of Fertility Regulation, Centre of Assisted Reproduction and Embryology, The University of Hong Kong-Shenzhen Hospital, Shenzhen, Guangdong, 518053, China
| | - Xinzong Zhang
- NHC Key Laboratory of Male Reproduction and Genetics, Guangdong Provincial Reproductive Science Institute, Guangdong Provincial Fertility Hospital, Guangzhou, Guangdong, 510600, China.
| | - Yuewei Liu
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China.
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Li L, Feng T, Wu R, Zhang Y, Wang N, Wu M, Pang Y, Yang S, Yang A, Zhang D, Hao G, Zhang R. The role of total antioxidant capacity and malondialdehyde of seminal plasma in the association between air pollution and sperm quality. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 335:122324. [PMID: 37544399 DOI: 10.1016/j.envpol.2023.122324] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 08/02/2023] [Accepted: 08/04/2023] [Indexed: 08/08/2023]
Abstract
Accumulating evidence has suggested that men exposed to air pollution are associated with decreased sperm quality, and seminal plasma plays a pivotal role in maintaining sperm viability. However, the role of seminal plasma in air pollution related sperm quality decline remain unestablished. In current study, we recruited 524 participants from couples who underwent in vitro fertilization treatment due to female factors at a fertility clinic in China from March to August 2020. Conventional sperm parameters, total antioxidant capacity (T-AOC), malondialdehyde (MDA) and testosterone were measured using semen samples. The six main air pollutants (PM2.5, PM10, NO2, SO2, CO, O3) during four key periods of sperm development (meiotic stage, spermiogenesis stage, epididymal stage and total sperm cycle period) were estimated using inverse distance weighting method. Multiple linear regression models were employed to investigate the exposure-outcome relationships. And we found that PM10 exposures were negatively related to sperm total motility and the exposures of PM2.5 and PM10 were inversely associated with sperm progressive motility during epididymal stage. Furthermore, PM2.5 and PM10 exposures were positively associated with seminal plasma MDA and PM10 was negatively related to seminal plasma T-AOC during epididymal stage. PM2.5, PM10 and CO exposures during total sperm cycle period might relate to increased seminal plasma testosterone. Mediation analysis indicated seminal plasma MDA and T-AOC partially mediated PM10 associated reduction of sperm motility during epididymal stage. Our study suggested MDA and T-AOC of seminal plasma played a role in air pollution associated decline of sperm motility.
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Affiliation(s)
- Lipeng Li
- Department of Toxicology, Hebei Medical University, Shijiazhuang, 050017, Hebei, PR China; Department of Reproductive Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang, 050017, PR China.
| | - Tengfei Feng
- Department of Reproductive Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang, 050017, PR China
| | - Ruiting Wu
- Department of Occupational Health and Environmental Health, Hebei Medical University, Shijiazhuang, 050017, Hebei, PR China
| | - Yaling Zhang
- Department of Toxicology, Hebei Medical University, Shijiazhuang, 050017, Hebei, PR China
| | - Ning Wang
- Department of Reproductive Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang, 050017, PR China
| | - Mengqi Wu
- Department of Toxicology, Hebei Medical University, Shijiazhuang, 050017, Hebei, PR China
| | - Yaxian Pang
- Department of Toxicology, Hebei Medical University, Shijiazhuang, 050017, Hebei, PR China
| | - Sujuan Yang
- Department of Reproductive Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang, 050017, PR China
| | - Aimin Yang
- Department of Reproductive Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang, 050017, PR China
| | - Dengsuo Zhang
- Department of Reproductive Medicine, The First Hospital of Hebei Medical University, Shijiazhuang, 050017, PR China
| | - Guimin Hao
- Department of Reproductive Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang, 050017, PR China
| | - Rong Zhang
- Department of Toxicology, Hebei Medical University, Shijiazhuang, 050017, Hebei, PR China; Key Laboratory of Environment and Human Health, Hebei Medical University, Shijiazhuang, 050017, Hebei, PR China.
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8
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Zhang X, Fan Z, Wang Q, Deng X, Xu R, Li Y, Liu T, Wang R, Shi C, Huang S, Lv Z, Chen G, Duan YG, Liu Y. Association between ambient temperature and semen quality among sperm donation volunteers in South China. ENVIRONMENT INTERNATIONAL 2023; 173:107809. [PMID: 36805156 DOI: 10.1016/j.envint.2023.107809] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 01/16/2023] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND Potential adverse effects of non-optimum temperatures on human semen quality have drawn much concern worldwide; however, the exposure-response relationship remains less understood. OBJECTIVES To quantitatively assess the association between exposure to ambient temperature and semen quality in South China, and to identify potential critical exposure windows. METHODS We conducted a longitudinal study to investigate 11,050 volunteers who lived in Guangdong province, China and intended to donate sperm in the Guangdong provincial human sperm bank during 2016-2021. Exposure to ambient temperature during 0-90 days before semen collection was assessed by extracting daily temperatures from a validated grid dataset at each subject's residential address. Linear mixed models and linear regression models were used to perform exposure-response analyses. RESULTS During the study period, the 11,050 subjects underwent 44,564 semen analyses. Each 5 °C increase of lag 0-90 day exposure to ambient temperature was approximately linearly associated with a 3.11 (95 % confidence interval [CI]: 2.08, 4.14) × 106/ml, 9.31 (4.83, 13.80) × 106, 1.27 % (0.91 %, 1.62 %), 8.20 (5.33, 11.08) × 106, 1.37 % (1.01 %, 1.74 %), 8.29 (5.52, 11.06) × 106, 0.67 % (0.28 %, 1.05 %), and 4.50 (2.20, 6.80) × 106 reduction in sperm concentration, total sperm number, total motility, total motile sperm number, progressive motility, total progressive sperm number, normal forms, and total normal form sperm number, respectively (all p < 0.001), which was not significantly modified by age (all p for effect modification > 0.05). We identified a critical exposure period of 10-14 days before semen collection for sperm motility, and 70-90 days before semen collection for sperm count and morphology. CONCLUSIONS Our study provides consistent evidence that higher ambient temperature was significantly associated with a reduction in semen quality in South China. The findings highlight the needs to reduce high temperature exposures during 3 months before ejaculation to maintain better semen quality.
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Affiliation(s)
- Xinzong Zhang
- NHC Key Laboratory of Male Reproduction and Genetics, Guangdong Provincial Reproductive Science Institute, Guangdong Provincial Fertility Hospital, Guangzhou, Guangdong 510600, China
| | - Zhaoyu Fan
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Qiling Wang
- NHC Key Laboratory of Male Reproduction and Genetics, Guangdong Provincial Reproductive Science Institute, Guangdong Provincial Fertility Hospital, Guangzhou, Guangdong 510600, China
| | - Xinyi Deng
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Ruijun Xu
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Yingxin Li
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Tingting Liu
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Rui Wang
- Luohu District Chronic Disease Hospital, Shenzhen, Guangdong 518020, China
| | - Chunxiang Shi
- Meteorological Data Laboratory, National Meteorological Information Center, Beijing 100081, China
| | - Suli Huang
- Department of Environment and Health, Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong 518055, China
| | - Ziquan Lv
- Central Laboratory of Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong 518055, China
| | - Gongbo Chen
- Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Yong-Gang Duan
- Shenzhen Key Laboratory of Fertility Regulation, Centre of Assisted Reproduction and Embryology, The University of Hong Kong - Shenzhen Hospital, Shenzhen, Guangdong 518053, China
| | - Yuewei Liu
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong 510080, China.
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9
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The association between season, day length, and temperature on clinical outcomes after cryopreserved embryo transfer. Fertil Steril 2021; 117:539-547. [PMID: 34949454 DOI: 10.1016/j.fertnstert.2021.11.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 11/04/2021] [Accepted: 11/04/2021] [Indexed: 01/15/2023]
Abstract
OBJECTIVE To investigate whether there is an association between season, temperature, and day length at oocyte retrieval and/or embryo transfer (ET) and clinical outcomes in frozen ET cycles. DESIGN Retrospective cohort study. SETTING Large academically affiliated research hospital. PATIENT(S) A total of 3,004 frozen ET cycles from 1,937 different women with oocyte retrieval and transfer between 2012 and 2017. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) Implantation, clinical pregnancy, spontaneous abortion, and live birth. RESULT(S) Frozen ETs with oocyte retrieval dates in summer had 45% greater odds of clinical pregnancy (odds ratio [OR], 1.45; 95% confidence interval [CI], 1.15-1.82) and 42% greater odds of live birth (OR, 1.42; 95% CI, 1.13-1.79) compared with those with oocyte retrieval dates in winter. A 41% greater odds of clinical pregnancy (OR, 1.41; 95% CI, 1.16-1.71) and 34% greater odds of live birth (OR, 1.34; 95% CI, 1.10-1.62) were observed among transfers with an average temperature at oocyte retrieval in the highest tertile (17.2-33.3 °C) compared with those in the lowest tertile (-17.2-6.7 °C). There were no consistent associations between clinical outcomes and day length at oocyte retrieval or between season, day length, or temperature at transfer of thawed embryos. CONCLUSION(S) Warmer temperatures at oocyte retrieval are associated with higher odds of clinical pregnancy and live birth among frozen ET cycles. The consistent associations seen with oocyte retrieval dates and the lack of associations observed with ET dates suggest that any seasonality effects on in vitro fertilization success are related to ovarian function and not uterine receptivity.
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10
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Verón GL, Tissera AD, Bello R, Estofan GM, Hernández M, Beltramone F, Molina RI, Vazquez-Levin MH. Association between meteorological variables and semen quality: a retrospective study. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2021; 65:1399-1414. [PMID: 33834291 DOI: 10.1007/s00484-021-02112-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 02/23/2021] [Accepted: 03/03/2021] [Indexed: 06/12/2023]
Abstract
Spermatogenesis is a temperature-dependent process, and high summer temperatures have been linked to lower sperm concentration and count. However, reports describing the association between other meteorological variables and semen quality are scarce. This study evaluated the association between semen quality and temperature, humidity, pressure, apparent temperature (AT), temperature-humidity index (THI), simplified wet-bulb global temperature (sWBGT), and sunshine duration. Semen samples were obtained at the Laboratorio de Andrología y Reproducción (LAR, Argentina), from men undergoing routine andrology examination (n=11657) and computer-assisted sperm analysis (n=4705) following WHO 2010 criteria. Meteorological variables readings were obtained from the Sistema Meteorológico Nacional. Sperm quality parameters were negatively affected in summer when compared to winter. Additionally, there was a significant decrease in sperm kinematics between winter and spring. Branch and bound variable selection followed by multiple regression analysis revealed a significant association between semen quality and meteorological variables. Specifically, changes in sunshine duration and humidity reinforced the prognosis of semen quality. Highest/lowest sunshine duration and humidity quantiles resulted in decreased sperm concentration, count, motility, vitality and membrane competence, nuclear maturity, and sperm kinematics associated to highest sunshine duration and lowest humidity. Findings from this report highlight the relevance of environmental studies for predicting alterations in male reproductive health associated to variations in meteorological variables, especially considering the current climate changes around the planet due to global warming and its consequences for human health.
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Affiliation(s)
- Gustavo Luis Verón
- Laboratorio de Estudios de Interacción Celular en Reproducción y Cáncer, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas de Argentina (National Research Council of Argentina; CONICET)-Fundación IBYME (FIBYME), Vuelta de Obligado 2490, C1428ADN, Ciudad Autónoma de Buenos Aires, Argentina
| | | | - Ricardo Bello
- Departamento de Metodología, Estadística y Matemática, Universidad de Tres de Febrero, Sáenz Peña, Buenos Aires, Argentina
| | | | - Mariana Hernández
- Centro Integral de Ginecología, Obstetricia y Reproducción (CIGOR), Córdoba, Argentina
| | - Fernando Beltramone
- Centro Integral de Ginecología, Obstetricia y Reproducción (CIGOR), Córdoba, Argentina
| | | | - Mónica Hebe Vazquez-Levin
- Laboratorio de Estudios de Interacción Celular en Reproducción y Cáncer, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas de Argentina (National Research Council of Argentina; CONICET)-Fundación IBYME (FIBYME), Vuelta de Obligado 2490, C1428ADN, Ciudad Autónoma de Buenos Aires, Argentina.
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11
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Lv MQ, Ge P, Zhang J, Yang YQ, Zhou L, Zhou DX. Temporal trends in semen concentration and count among 327 373 Chinese healthy men from 1981 to 2019: a systematic review. Hum Reprod 2021; 36:1751-1775. [PMID: 34046659 DOI: 10.1093/humrep/deab124] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 04/16/2021] [Indexed: 12/19/2022] Open
Abstract
STUDY QUESTION Are there temporal trends of sperm concentration (SC) and total sperm count (TSC) in Chinese healthy males from 1981 to 2019? SUMMARY ANSWER Our result indicated a temporal decrease in SC and TSC among 327 373 healthy Chinese men in the recent four decades. WHAT IS KNOWN ALREADY A review of 61 papers reported a temporal decline in SC and TSC from 1938 to 1990. This trend was later confirmed by a systematic review of 185 published papers from 1981 to 2013. However, the majority of the included individuals were from western countries. In China, whether SC and TSC have declined remains controversial. STUDY DESIGN, SIZE, DURATION This systematic review of published articles used data extracted from Pubmed, Science Direct, Embase, China-National-Knowledge-Infrastructure (CNKI) and Wanfang Data to assess changes in SC and TSC in China from 1981 to 2019. PARTICIPANTS/MATERIALS, SETTING, METHODS A total of 111 studies including 327 373 individuals who provided semen samples from 1981 to 2019 were extracted for the present analysis. Study selection and data extraction were performed by two independent researchers. The trends in SC and TSC were analysed using liner-regression and meta-regression before and after adjusting for potential covariates. Moreover, subgroups, categorised based on geographic region, fertility status or recruitment source, were also analysed. MAIN RESULTS AND THE ROLE OF CHANCE SC declined significantly (slope liner-regression = -0.748 million/ml/year; P = 0.005; slope meta-regression = -0.824 million/ml/year; P < 0.001) between 1981 and 2019 in China. Trends for TSC was similar to that for SC (slope liner-regression = -2.073 million/year; P = 0.032; slope meta-regression = -2.188 million/year; P = 0.003). In subgroup meta-regression analyses, males with definite fertility had continuous declines in SC (slope northern group=-2.268, P = 0.009; slope southern group=-1.014, P = 0.009) and TSC (slope northern group=-9.675, P = 0.010; slope southern group=-3.215, P = 0.042). However, in the unselected group, where fertility status was unknown, the obvious downward trend in SC was only seen in males from Northern regions (slope = -0.836, P = 0.003). Another subgroup analysis demonstrated that obvious decreases in SC (slope = -1.432, P < 0.001) and TSC (slope=-4.315, P = 0.001) were only seen in volunteer groups but not in pre-pregnancy examination groups and other recruitment groups. The results changed minimally in multiple sensitivity analyses. LIMITATIONS, REASONS FOR CAUTION The validity of the meta-analysis results was limited mainly by the quality of the included studies. Additionally, our study spanned many decades and the recommended criteria for some semen parameter assessments have significantly changed, which may bring about some unavoidable bias. Moreover, the data remain insufficient especially in some provinces of China. WIDER IMPLICATIONS OF THE FINDINGS The present study is the first study to report significant decreases in SC and TSC in 327 373 healthy Chinese men between 1981 and 2019, indicating a serious reproductive health warning. Further studies on the causes of the declines are urgently needed. STUDY FUNDING/COMPETING INTEREST(S) D.Z. is supported by the National Natural Science Funding of China, Natural Science Funding of Shaanxi Province, Science Funding of Health Department, Shaanxi Province, Fundamental Research Funds for the Central University and the Project of Independent Innovative Experiment for Postgraduates in Medicine in Xi'an Jiaotong University. The authors have no conflicts of interests to declare. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- Mo-Qi Lv
- Department of Pathology, Medical School, Xi'an Jiaotong University, Xi'an, China.,Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, China
| | - Pan Ge
- Department of Pathology, Medical School, Xi'an Jiaotong University, Xi'an, China.,Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, China
| | - Jian Zhang
- Department of Pathology, Medical School, Xi'an Jiaotong University, Xi'an, China.,Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, China
| | - Yan-Qi Yang
- Department of Pathology, Medical School, Xi'an Jiaotong University, Xi'an, China.,Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, China
| | - Liang Zhou
- Assisted Reproduction Center, Northwest Women and Children's Hospital, Xi'an, China
| | - Dang-Xia Zhou
- Department of Pathology, Medical School, Xi'an Jiaotong University, Xi'an, China.,Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, China
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12
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Seasonal Changes of Nuclear DNA Fragmentation in Boar Spermatozoa in Spain. Animals (Basel) 2021; 11:ani11020465. [PMID: 33572479 PMCID: PMC7916369 DOI: 10.3390/ani11020465] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/04/2021] [Accepted: 02/05/2021] [Indexed: 12/03/2022] Open
Abstract
Simple Summary Artificial insemination is widely used in pig production and currently a boar performs several thousand matings per year. Traditionally sperm quality is focused on the number of spermatozoa, their motility and morphology. However, the quality of sperm DNA, which contains genetic information, is also related to fertility problems. The aim of this research was to study the effect of natural light hours and age of the boar on the status of the sperm DNA. After a powerful statistical analysis, it was found that the percentage of spermatozoa with fragmented DNA decreases within the observed age range as the boar gets older. On the other hand, the amount of spermatozoa with fragmented DNA was the lowest in autumn while it was the highest in summer. This study demonstrates the remaining seasonality of boars in Spain and highlights the importance of controlling the environmental conditions in the farms. Sperm DNA testing provides a basis for improving the selection of AI boars by excluding males with higher DNA fragmentation due to their very young reproductive age that may pose a potential subfertility. Abstract There are numerous cases when conventional spermiogram parameters are all within an acceptable range but boar subfertility persists. The total sperm nuclear DNA fragmentation index (tDFI) is a trait related to fertility and prolificacy problems that is not routinely evaluated in commercial AI boars. The aim of this research was to study the effect of the photoperiod, season and reproductive age of the boar on tDFI (measured by SCSA) of 1279 ejaculates from 372 different boars belonging to 6 different breeds located in 6 AI studs in Spain. tDFI data ranged from 0.018% to 20.1%. Although there was a significant single boar effect in the tDFI occurrence, a negative correlation between the tDFI and the age of the boar was found (p < 0.001). tDFI would decrease due to aging of the boar 0.66% each year old within the observed age range. After including age as a covariate in the ANCOVA, no differences were found in tDFI between photoperiods when the sperm collection date was evaluated. However, when the date of the production of semen in the testis was evaluated, the total percentage of spermatozoa with fragmented nuclear DNA was 1.46% higher in the increasing photoperiod in comparison to the decreasing photoperiod (p < 0.0001). On the other hand, for both dates, the lowest tDFI values corresponded to minimum day length for decreasing photoperiod phase (autumn), while the highest tDFI values were found in summer (maximum day length for decreasing photoperiod phase).
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13
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Tsujimura A, Hiramatsu I, Miyoshi M, Ogasa T, Miyoshi Y, Ishikawa K, Uesaka Y, Nozaki T, Shirai M, Kobayashi K, Horie S. Relationship between serum zinc concentration and semen quality in newly-wed men. Int J Urol 2020; 28:289-293. [PMID: 33254285 DOI: 10.1111/iju.14448] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 11/01/2020] [Indexed: 12/13/2022]
Abstract
OBJECTIVES To clarify factors associated with semen quality and confirm whether there is an association between semen quality and serum zinc concentration. METHODS A semen test was performed on 217 men just after or just before marriage. Variables assessed in the study were: age; symptomatic scores, including sexual function evaluated using several specific questionnaires; endocrinological profiles, especially follicle-stimulating hormone; and serum zinc concentrations. Based on World Health Organization criteria for assessing sperm quality, semen volume ≥1.5 mL, sperm concentration ≥15 million/mL, or sperm motility rate ≥40%, the men were grouped according to whether they had values below or above these criteria. The two groups were compared with regard to the study variables, and correlation between serum zinc concentration and semen quality was evaluated. Independent predictors for inclusion in the group with values below the criteria were investigated further. RESULTS Of the 217 men included in the study, 45 (20.7%) were categorized as having values below the World Health Organization criteria. The men in this group were significantly older and had significantly worse sexual function, significantly higher follicle-stimulating hormone levels, and significantly lower serum zinc concentrations, than those in the group with values above the criteria. There was no significant correlation between serum zinc concentration and semen quality. However, the independent predictors for having values below the criteria in binomial logistic regression analysis were follicle-stimulating hormone and serum zinc concentration. CONCLUSION We suggest that semen analysis may be considered in men with a low level of serum zinc and high level of follicle-stimulating hormone when developing a life plan for fertilization.
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Affiliation(s)
- Akira Tsujimura
- Department of Urology, Juntendo University Urayasu Hospital, Urayasu, Chiba, Japan
| | - Ippei Hiramatsu
- Department of Urology, Juntendo University Urayasu Hospital, Urayasu, Chiba, Japan.,Department of Urology, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Miho Miyoshi
- Department of Urology, Juntendo University Urayasu Hospital, Urayasu, Chiba, Japan.,Department of Urology, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Taiki Ogasa
- Department of Urology, Juntendo University Urayasu Hospital, Urayasu, Chiba, Japan
| | - Yuto Miyoshi
- Department of Urology, Juntendo University Urayasu Hospital, Urayasu, Chiba, Japan
| | - Keisuke Ishikawa
- Department of Urology, Juntendo University Urayasu Hospital, Urayasu, Chiba, Japan.,Department of Urology, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Yuka Uesaka
- Department of Urology, Juntendo University Urayasu Hospital, Urayasu, Chiba, Japan
| | - Taiji Nozaki
- Department of Urology, Juntendo University Urayasu Hospital, Urayasu, Chiba, Japan
| | - Masato Shirai
- Department of Urology, Juntendo University Urayasu Hospital, Urayasu, Chiba, Japan
| | | | - Shigeo Horie
- Department of Urology, Graduate School of Medicine, Juntendo University, Tokyo, Japan
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14
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Kabukçu C, Çil N, Turan T, Özlülerden Y, Çabuş Ü, Abban Mete G. Do seasonal variations in ambient temperature, humidity and daylight duration affect semen parameters? A retrospective analysis over eight years. Andrologia 2020; 52:e13777. [PMID: 32786091 DOI: 10.1111/and.13777] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 07/05/2020] [Accepted: 07/07/2020] [Indexed: 12/14/2022] Open
Abstract
We aimed to evaluate the possible effects of seasonal variation on semen parameters. We retrospectively analysed the data of 6,116 semen samples collected at a university hospital for eight years. The past ambient temperature, relative humidity and daylight duration records, and birth registry of the province were obtained to examine the relationship of seasonal changes in semen parameters with annual birth rates and environmental factors. The mean age was 33.03 ± 6.86 years. We found a significant difference between months for sperm concentration (p < .0001), total sperm count (p < .0001), progressively motile sperm count (p < .0001) and normal sperm morphology (p = .028). The sperm concentration and total count were significantly lower in July and August compared with December, May and June. The progressively motile sperm count in October was 23.6% less than the value of May. The temperature and temperature-humidity index were negatively correlated with semen parameters. The highest number of births was in the summer. However, no correlation was present between deliveries and the semen concentration regarding months (rs = 0.199, p = .083). In conclusion, we observed significant seasonal and monthly differences in sperm concentration, sperm count and progressively motile sperm count. Increased ambient temperature due to seasonal changes may be a detrimental factor for semen parameters.
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Affiliation(s)
- Cihan Kabukçu
- Department of Obstetrics and Gynecology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Nazlı Çil
- Department of Histology and Embryology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Tahir Turan
- Department of Urology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Yusuf Özlülerden
- Department of Urology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Ümit Çabuş
- Department of Obstetrics and Gynecology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Gülçin Abban Mete
- Department of Histology and Embryology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
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15
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Tsujimura A, Hiramatsu I, Nagashima Y, Ishikawa K, Uesaka Y, Nozaki T, Ogishima T, Shirai M, Terai K, Kobayashi K, Horie S. Erectile Dysfunction is Predictive Symptom for Poor Semen in Newlywed Men in Japan. Sex Med 2019; 8:21-29. [PMID: 31669052 PMCID: PMC7042159 DOI: 10.1016/j.esxm.2019.09.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/23/2019] [Accepted: 09/29/2019] [Indexed: 11/18/2022] Open
Abstract
Introduction As a continuous decline in semen concentration has been reported, the concept of male infertility has gained increased attention. Although several surveys of semen quality have been conducted in young men in general, no study has reported only on newlywed men. Aim The aim of this study was to evaluate semen quality and assess its characteristics in newlywed men. Methods This study included 564 men visiting our hospital or clinic for fertility screening just before their wedding or as newlywed men. Based on the World Health Organization criteria, the rates of men who did not have a semen volume of ≥1.5 mL, a sperm concentration of ≥15 million/mL, and a sperm motility rate of ≥40% were calculated. The characteristics of the poor semen findings group with any 1 of the 3 items of semen volume, sperm concentration, or sperm motility rate not reaching the reference value were evaluated. Main Outcome Measure Independent factors, which are involved in the poor semen findings group, were evaluated. Results The poor findings in semen volume, sperm concentration, and sperm motility were found in 11.0%, 9.2%, and 10.6%, respectively. The poor semen findings group included 143 men (25.4%) with any 1 of the 3 items not reaching the reference value. As compared to the normal group, age and body mass index were significantly higher, testicular volume was significantly smaller, and blood gamma-glutamyltransferase and fasting blood sugar levels were significantly higher in the poor semen findings group. Logistic multivariate analysis, including symptom questionnaire scores, blood biochemistry items, and endocrinological items, showed 3 independent factors were involved in the poor semen findings group: age, luteinizing hormone, and erection (Erection Hardness Score). Conclusion It was clarified that even among men beginning their attempts at pregnancy, semen findings were poor and erectile dysfunction was involved in poor semen quality in one-quarter of the men. Tsujimura A, Hiramatsu I, Nagashima Y, et al. Erectile Dysfunction is Predictive Symptom for Poor Semen in Newlywed Men in Japan. Sex Med 2019;8:21–29.
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Affiliation(s)
- Akira Tsujimura
- Department of Urology, Juntendo University Urayasu Hospital, Tomioka Urayasu, Chiba, Japan; Men's Health Clinic Tokyo, Marunouchi Chiyoda-ku, Tokyo, Japan.
| | - Ippei Hiramatsu
- Department of Urology, Juntendo University Urayasu Hospital, Tomioka Urayasu, Chiba, Japan; Men's Health Clinic Tokyo, Marunouchi Chiyoda-ku, Tokyo, Japan; Department of Urology, Juntendo University Graduate School of Medicine, Hongo Bunkyo-ku, Tokyo, Japan
| | - Yuki Nagashima
- Department of Urology, Juntendo University Urayasu Hospital, Tomioka Urayasu, Chiba, Japan; Department of Urology, Juntendo University Graduate School of Medicine, Hongo Bunkyo-ku, Tokyo, Japan
| | - Keisuke Ishikawa
- Department of Urology, Juntendo University Urayasu Hospital, Tomioka Urayasu, Chiba, Japan; Department of Urology, Juntendo University Graduate School of Medicine, Hongo Bunkyo-ku, Tokyo, Japan
| | - Yuka Uesaka
- Department of Urology, Juntendo University Urayasu Hospital, Tomioka Urayasu, Chiba, Japan
| | - Taiji Nozaki
- Department of Urology, Juntendo University Urayasu Hospital, Tomioka Urayasu, Chiba, Japan
| | - Tatsuya Ogishima
- Department of Urology, Juntendo University Urayasu Hospital, Tomioka Urayasu, Chiba, Japan
| | - Masato Shirai
- Department of Urology, Juntendo University Urayasu Hospital, Tomioka Urayasu, Chiba, Japan
| | - Kazutaka Terai
- Men's Health Clinic Tokyo, Marunouchi Chiyoda-ku, Tokyo, Japan; Department of Urology, Dokkyo Medical University Saitama Medical Center, Minamikoshigaya Koshigaya, Saitama, Japan
| | | | - Shigeo Horie
- Men's Health Clinic Tokyo, Marunouchi Chiyoda-ku, Tokyo, Japan; Department of Urology, Juntendo University Graduate School of Medicine, Hongo Bunkyo-ku, Tokyo, Japan
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16
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Wan ZZ, Chen HG, Lu WQ, Wang YX, Pan A. Metal/metalloid levels in urine and seminal plasma in relation to computer-aided sperm analysis motion parameters. CHEMOSPHERE 2019; 214:791-800. [PMID: 30296767 DOI: 10.1016/j.chemosphere.2018.10.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 09/28/2018] [Accepted: 10/01/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Exposure to high levels of metals/metalloids may impair semen quality. Computer-aided sperm analysis (CASA) can be used for kinematic analysis of spermatozoa, which provides additional insights into sperm motion characteristics. OBJECTIVE To explore the associations of urinary and seminal plasma metal/metalloid concentrations with CASA motion parameters and assess the degree of correspondence between the two sample types. METHODS Eighteen metals/metalloids in seminal plasma and repeated urine samples were determined among 746 men recruited from a reproductive center. We assessed their associations with 6 CASA motion parameters [i.e., straight-line velocity (VSL), curvilinear velocity (VCL), average path velocity (VAP), linearity (LIN), straightness (STR) and amplitude head displacement (ALH)] using multivariable linear regression models. RESULTS We found significantly inverse dose-dependent relationships between seminal plasma arsenic (As) and VSL, VCL and VAP, between seminal plasma selenium (Se) and VSL and VAP, between seminal plasma zinc (Zn) and STR and LIN, and between seminal plasma manganese (Mn) and LIN in single-metal models [all false discovery rate (FDR) adjusted P for trend < 0.05]. These dose-response relationships remained statistically significant based on multiple-metal models and restricted cubic spline functions. Metal/metalloid concentrations in urine poorly predicted the same-day seminal plasma concentrations [coefficient of determination (R2) < 0.15]. We didn't find any significant associations between urinary metal/metalloid concentrations and the CASA motion parameters. CONCLUSION Exposure to high levels of As, Se, Mn and Zn may impair sperm motion capacity. Concentrations of metals/metalloids in spot urine samples cannot accurately predict same-day seminal plasma exposure levels.
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Affiliation(s)
- Zhen-Zhen Wan
- Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China
| | - Heng-Gui Chen
- Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China
| | - Wen-Qing Lu
- 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
| | - Yi-Xin Wang
- Department of Epidemiology and Biostatistics, 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.
| | - An Pan
- Department of Epidemiology and Biostatistics, 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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Yucel C, Kozacioglu Z. Effect of seasonal variation on the success of micro-dissection testicular sperm extraction: A pilot study. Andrologia 2018; 51:e13156. [PMID: 30255508 DOI: 10.1111/and.13156] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 08/01/2018] [Accepted: 08/23/2018] [Indexed: 12/25/2022] Open
Abstract
The aim of this study is to investigate the relationship between seasonal variation and the success of micro-dissection testicular sperm extraction (mTESE). A total of 395 patients who were diagnosed with non-obstructive azoospermia, who had undergone mTESE operation for the first time, and who did not have an obstructive pathology, were included in the study. The patients were divided into 12 groups according to the month of the operation and four groups according to the season. The groups were compared with regard to age, duration of infertility, BMI, hormone profile and sperm retrieval rate of mTESE. The maximum sperm retrieval rate was obtained in January (69.7%) and the minimum sperm retrieval rate was obtained in November (50.0%). No statistically significant difference was detected when the mTESE results were compared with regard to months (p = 0.638). The maximum sperm retrieval rate was obtained in the summer (62.8%) and the minimum was obtained in spring (57.0%). No statistically significant difference was determined between groups created according to seasons (p = 0.865). We did not observe a statistically significant relationship between the sperm retrieval rate and the seasons. Studies conducted in regions with different climate features could better reveal the relationship between seasonal variation and the success of mTESE.
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Affiliation(s)
- Cem Yucel
- Department of Urology, Tepecik Training and Research Hospital, Izmir, Turkey
| | - Zafer Kozacioglu
- Department of Urology, Tepecik Training and Research Hospital, Izmir, Turkey
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18
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Patel AS, Leong JY, Ramasamy R. Prediction of male infertility by the World Health Organization laboratory manual for assessment of semen analysis: A systematic review. Arab J Urol 2017; 16:96-102. [PMID: 29713540 PMCID: PMC5922004 DOI: 10.1016/j.aju.2017.10.005] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 10/18/2017] [Accepted: 10/21/2017] [Indexed: 12/20/2022] Open
Abstract
Objective To discuss the role, reliability and limitations of the semen analysis in the evaluation of fertility with reference to the World Health Organization (WHO) fifth edition guidelines, with semen analysis reference values published in 2010. We also discuss the limitations of using a single threshold value to distinguish ‘abnormal’ and ‘normal’ parameters. Methods The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were used to search the MEDLINE, EMBASE, and the Cochrane electronic database for articles discussing the effectiveness of semen analysis. Results Limitations affecting the reliability of semen analysis as a predictor of fertility were found. These include: the lack of consideration of the female factor, the vaguely defined threshold values, and the intra-individual variation in semen parameters. Conclusions Impaired semen parameters alone cannot be used to predict fertility as these men still have a chance of being fertile, except when a man has azoospermia, necrospermia or globozoospermia.
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Affiliation(s)
- Amir S Patel
- Department of Urology, University of Miami Miller School of Medicine, Miami, FL, USA
| | | | - Ranjith Ramasamy
- Department of Urology, University of Miami Miller School of Medicine, Miami, FL, USA
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19
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Gatimel N, Moreau J, Parinaud J, Léandri RD. Sperm morphology: assessment, pathophysiology, clinical relevance, and state of the art in 2017. Andrology 2017; 5:845-862. [DOI: 10.1111/andr.12389] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 05/05/2017] [Accepted: 05/11/2017] [Indexed: 12/26/2022]
Affiliation(s)
- N. Gatimel
- Department of Reproductive Medicine; Paule de Viguier Hospital; Toulouse University Hospital; Toulouse France
- EA 3694 Human Fertility Research Group; Paule de Viguier Hospital; Toulouse University Hospital; Toulouse France
| | - J. Moreau
- Department of Reproductive Medicine; Paule de Viguier Hospital; Toulouse University Hospital; Toulouse France
- EA 3694 Human Fertility Research Group; Paule de Viguier Hospital; Toulouse University Hospital; Toulouse France
| | - J. Parinaud
- Department of Reproductive Medicine; Paule de Viguier Hospital; Toulouse University Hospital; Toulouse France
- EA 3694 Human Fertility Research Group; Paule de Viguier Hospital; Toulouse University Hospital; Toulouse France
| | - R. D. Léandri
- Department of Reproductive Medicine; Paule de Viguier Hospital; Toulouse University Hospital; Toulouse France
- EA 3694 Human Fertility Research Group; Paule de Viguier Hospital; Toulouse University Hospital; Toulouse France
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20
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Mao H, Feng L, Yang WX. Environmental factors contributed to circannual rhythm of semen quality. Chronobiol Int 2017; 34:411-425. [PMID: 28128993 DOI: 10.1080/07420528.2017.1280046] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
We investigated whether human semen parameters present circannual rhythm or not, and whether environmental factors exert on semen quality. This retrospective study used data of patients mainly from Reproductive Medicine Center and Urology and Andrology Clinic of a general hospital in China. Sperm concentration and motility were measured by computer aided sperm analysis (CASA). Sperm morphology was scored based on the strict criteria (WHO, 2010). The Kruskal-Wallis rank test was used to investigate the relationship between semen parameters and season/month. Partial correlation coefficients were used to analyze the relationship between semen parameters and environmental factors. In this study, we found that sperm concentration and total amount per ejaculate were significantly lower in summer and higher in winter. But, sperm progressive motility and motility were significantly higher in spring and summer (from March to June), lower in autumn and winter (September and October). Unexpectedly, normal sperm morphology and mixed agglutination reaction (MAR) positive rate didn't vary along with season or month. Furthermore, temperature was negatively related to sperm concentration and total amount per ejaculate. Precipitation was positively associated with progressive motility and normal sperm morphology, but negatively related to sperm head defect percentage. The length of sunlight was positively related to progressive motility. The Air Quality Index (AQI) was positively associated with semen volume and sperm total amount per ejaculate. These suggest seasonal and monthly variation underlying some semen parameters.
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Affiliation(s)
- Huan Mao
- a Reproductive Medicine Center, The First Affiliated Hospital, College of Medicine, Zhejiang University , Hangzhou , China
| | - Lei Feng
- b Information Center, The First Affiliated Hospital, College of Medicine, Zhejiang University , Hangzhou , China
| | - Wan-Xi Yang
- c The Sperm Laboratory, College of Life Sciences, Zhejiang University , Hangzhou , Zhejiang , China
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Abstract
With expanding knowledge on the health benefits of exercise, there is an increasing demand for information on the andrological consequences of participating in sports. These consequences are especially important in the context of infertility problems worldwide. The so-called “male factor” is reported in up to 50% of couples having trouble with conception. The answer to the question, “Is physical activity good for male reproductive health?” is not straightforward. A number of studies have suggested that significant changes in semen parameters may occur due to sports training of certain types, intensities, and durations. The changes to these parameters vary in scope, direction, and magnitude. Findings in recreational athletes have also differed from those in professional athletes. This review of the current literature suggests that intense physical activity may affect the semen concentration, as well as the number of motile and morphologically normal spermatozoa. Training at higher intensities and with increased loads seems to be associated with more profound changes in semen quality. In recreational athletes, exercise has either a positive or neutral effect on semen parameters. Due to many limitations (e.g., global sperm count trends, concerns about the quality control of sperm evaluations, and new standards for semen analysis), comparisons among historical data and their interpretation are difficult.
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Affiliation(s)
- Paweł Jóźków
- 1 University School of Physical Education, Wrocław, Poland
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Rao M, Meng TQ, Hu SH, Guan HT, Wei QY, Xia W, Zhu CH, Xiong CL. Evaluation of semen quality in 1808 university students, from Wuhan, Central China. Asian J Androl 2016; 17:111-6. [PMID: 25337834 PMCID: PMC4291853 DOI: 10.4103/1008-682x.135984] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The aim of this study was to evaluate the semen quality of university students in Wuhan, the largest city in the world in terms of the number of university students. All student sperm donors recorded in the Hubei Province Human Sperm Bank from 1 March 2010 to 31 December 2013 were screened. At last, a total of 3616 semen samples from 1808 university student sperm donors were eligible and retrospectively analyzed. Each donor's semen parameters were averaged over two samples and compared with the World Health Organization criteria, and a generalized linear regression model was used to examine several determinants of semen quality. We found that the mean and median values were 3.0 ml and 2.8 ml for semen volume, 50.2 × 106 ml−1 and 50.0 × 106 ml−1 for sperm concentration, 148.1 × 106 and 142.1 × 106 for total sperm count, and 58.6% and 60.0% for total sperm motility. About 85.0% of donors had parameters that were all normal. Season and duration of abstinence were critical factors affecting semen quality. We also found a decrease in sperm concentration during the 4 years observation; however, this may not be a strong evidence to confirm the declining trend of semen quality. In conclusion, semen quality of university students in Wuhan was not optimal and should be paid high attention, long-term observation and further study should be carried out to confirm the present situation.
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Affiliation(s)
| | | | | | | | | | - Wei Xia
- Family Planning Research Institute; Reproductive Medicine Center, Tongji Medical College, Huazhong University of Science and Technology; Hubei Province Human Sperm Bank, Wuhan, Hubei 430030, China
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De Giorgi A, Volpi R, Tiseo R, Pala M, Manfredini R, Fabbian F. Seasonal variation of human semen parameters: A retrospective study in Italy. Chronobiol Int 2015; 32:711-6. [DOI: 10.3109/07420528.2015.1024315] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Pacey AA, Povey AC, Clyma JA, McNamee R, Moore HD, Baillie H, Cherry NM. Modifiable and non-modifiable risk factors for poor sperm morphology. Hum Reprod 2014; 29:1629-36. [DOI: 10.1093/humrep/deu116] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
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