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Behdarvandian P, Nasr-Esfahani A, Tavalaee M, Pashaei K, Naderi N, Darmishonnejad Z, Hallak J, Aitken RJ, Gharagozloo P, Drevet JR, Nasr-Esfahani MH. Sperm chromatin structure assay (SCSA ®) and flow cytometry-assisted TUNEL assay provide a concordant assessment of sperm DNA fragmentation as a function of age in a large cohort of approximately 10,000 patients. Basic Clin Androl 2023; 33:33. [PMID: 38030992 PMCID: PMC10688019 DOI: 10.1186/s12610-023-00208-9] [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: 05/11/2023] [Accepted: 09/19/2023] [Indexed: 12/01/2023] Open
Abstract
BACKGROUND Sperm DNA integrity is increasingly seen as a critical characteristic determining reproductive success, both in natural reproduction and in assisted reproductive technologies (ART). Despite this awareness, sperm DNA and nuclear integrity tests are still not part of routine examinations for either infertile men or fertile men wishing to assess their reproductive capacity. This is not due to the unavailability of DNA and sperm nuclear integrity tests. On the contrary, several relevant but distinct tests are available and have been used in many clinical trials, which has led to conflicting results and confusion. The reasons for this are mainly the lack of standardization between different clinics and between the tests themselves. In addition, the small number of samples analyzed in these trials has often weakened the value of the analyses performed. In the present work, we used a large cohort of semen samples, covering a wide age range, which were simultaneously evaluated for sperm DNA fragmentation (SDF) using two of the most frequently used SDF assays, namely the TUNEL assay and the sperm chromatin structure assay (SCSA®). At the same time, as standard seminal parameters (sperm motility, sperm morphology, sperm count) were available for these samples, correlations between age, SDF and conventional seminal parameters were analyzed. RESULTS We show that the SCSA® and TUNEL assessments of SDF produce concordant data. However, the SDF assessed by TUNEL is systematically lower than that assessed by SCSA®. Regardless of the test used, the SDF increases steadily during aging, while the HDS parameter (High DNA stainability assessed via SCSA®) remains unchanged. In the cohort analyzed, conventional sperm parameters do not seem to discriminate with aging. Only sperm volume and motility were significantly lower in the oldest age group analyzed [50-59 years of age]. CONCLUSIONS In the large cohort analyzed, SDF is an age-dependent parameter, increasing linearly with aging. The SCSA® assessment of SDF and the flow cytometry-assisted TUNEL assessment are well correlated, although TUNEL is less sensitive than SCSA®. This difference in sensitivity should be taken into account in the final assessment of the true level of fragmentation of the sperm nucleus of a given sample. The classical sperm parameters (motility, morphology, sperm count) do not change dramatically with age, making them inadequate to assess the fertility potential of an individual.
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Affiliation(s)
- Paria Behdarvandian
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, 8165131378, Iran
| | - Ali Nasr-Esfahani
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, 8165131378, Iran.
- Isfahan Fertility and Infertility Center, Isfahan, Iran.
| | - Marziyeh Tavalaee
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, 8165131378, Iran
| | - Kosar Pashaei
- Isfahan Fertility and Infertility Center, Isfahan, Iran
| | - Nushin Naderi
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, 8165131378, Iran
| | - Zahra Darmishonnejad
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, 8165131378, Iran
| | - Jorge Hallak
- Androscience, Science and Innovation Center in Andrology and High-Complex Clinical and Research Andrology Laboratory, Sao Paulo, 04534-011, Brazil
| | - Robert J Aitken
- Priority Research Centre for Reproductive Science, Discipline of Biological Sciences, School of Environmental and Life Sciences, College of Engineering Science and Environment, University of Newcastle, Callaghan, NSW, 2308, Australia
| | | | - Joël R Drevet
- Faculty of Medicine, Université Clermont Auvergne, GReD Institute, CRBC, 63000, Clermont-Ferrand, France.
| | - Mohammad Hossein Nasr-Esfahani
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, 8165131378, Iran.
- Isfahan Fertility and Infertility Center, Isfahan, Iran.
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Singh V, Madeshiya AK, Ansari NG, Singh MK, Abhishek A. CYP1A1 gene polymorphism and heavy metal analyses in benign prostatic hyperplasia and prostate cancer: An explorative case-control study. Urol Oncol 2023:S1078-1439(23)00142-4. [PMID: 37277283 DOI: 10.1016/j.urolonc.2023.04.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 04/19/2023] [Accepted: 04/24/2023] [Indexed: 06/07/2023]
Abstract
INTRODUCTION The prostatic disorder is associated with benign prostatic hyperplasia (BPH) and prostate cancer (CaP). Evidently, prevalent transcription factors and signaling pathways define their relationship. The etiology of the prostatic disorder is multifactorial including heavy metal toxicity like lead (Pb), Cadmium (Cd), and genetic factors. This study elucidates the association between heavy metal toxicity Pb, Cd, and CYP1A1 gene polymorphism with BPH and CaP. METHODS a case-control study with (BPH, n = 104), (CaP, n = 58) and (controls, n =107) patients. Heavy metal Pb and Cd estimation by atomic absorption spectrophotometer. The polymorphism of the CYP1A1 T>C (rs4646903) gene was analyzed byPCR-RFLP. RESULT Higher levels of Pb and Cd were found in BPH and CaP followed by the control group (P-value: < 0.05). Pb and Cd show a significant correlation among prostate volume in CaP. Additionally, PSA, IPSS score, and pre void volume were positively co-related with Pb in BPH patients. The posthoc test defines the level of Pb and Cd as significantly elevated in the mutant genotype, highest among homozygous mutant genotype of CYP1A1gene among BPH. In CaP, Pb is significantly higher among the homozygous mutant type of CYP1A1 gene. The risk is also influenced by smoking, tobacco, and alcohol. CONCLUSION The heavy metal toxicity Pb and Cd were reported to raise the risk of BPH and CaP. However, a person with heavy metal toxicity especially in BPH has a high-risk genetic susceptibility to the CYP1A1 gene in the north Indian population.
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Affiliation(s)
- Vishwajeet Singh
- Department of Urology, King George's Medical University, Lucknow, Uttar Pradesh, India.
| | - Amit Kumar Madeshiya
- Department of Urology, King George's Medical University, Lucknow, Uttar Pradesh, India; Faillace Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center, Houston, TX
| | - Nasreen Ghazi Ansari
- Regulatory Toxicology, CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India
| | - Mukul Kumar Singh
- Department of Urology, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Amar Abhishek
- School of Life sciences, Guru Ghasidas vishwavidyalaya, A Central University, Bilaspur, Chattisgarh, India
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Markantoni M, Sarafidou T, Chatziparasidou A, Christoforidis N, Mamuris Z. Male infertility and the impact of lifestyle in the Greek population: A case–control study. Health Sci Rep 2022; 5:e675. [PMID: 35755412 PMCID: PMC9201462 DOI: 10.1002/hsr2.675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 05/03/2022] [Accepted: 05/15/2022] [Indexed: 11/07/2022] Open
Abstract
Background and Aims Collection of epidemiological data has become a crucial step in every fertility evaluation, especially regarding idiopathic male infertility. Information on data such as tobacco smoking, alcohol intake, and body mass index can provide crucial information regarding the dynamics between fertility status and everyday practices. We aim to set the base for epidemiological studies on male infertility in the Greek population. Methods Four hundred and fourteen Greek volunteers were asked to fill in a questionnaire regarding their characteristics and lifestyle preferences, followed by a seminogram. Depending on their answers, they were divided into groups and data were analyzed for correlation with seminogram parameters using Spearman's rank correlation test. Results Our results indicate that a high body mass index (BMI) is negatively correlated with all three seminogram parameters (number, motility, and morphology) and exposure to radiation or chemicals is negatively correlated with sperm motility, with a p < 0.01. Conclusions These findings indicate negative correlations of BMI and exposure to radiation/chemicals with semen parameters in the Greek population. Such information can be used to plan a diagnostic approach or even therapeutic interventions.
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Affiliation(s)
- Maria Markantoni
- Laboratory of Genetics, Comparative and Evolutionary Biology, Department of Biochemistry and Biotechnology University of Thessaly Larisa Greece
| | - Theologia Sarafidou
- Laboratory of Genetics, Comparative and Evolutionary Biology, Department of Biochemistry and Biotechnology University of Thessaly Larisa Greece
| | | | | | - Zissis Mamuris
- Laboratory of Genetics, Comparative and Evolutionary Biology, Department of Biochemistry and Biotechnology University of Thessaly Larisa Greece
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Vickram AS, Anbarasu K, Jeyanthi P, Gulothungan G, Nanmaran R, Thanigaivel S, Sridharan TB, Rohini K. Identification and Structure Prediction of Human Septin-4 as a Biomarker for Diagnosis of Asthenozoospermic Infertile Patients-Critical Finding Toward Personalized Medicine. Front Med (Lausanne) 2021; 8:723019. [PMID: 34926486 PMCID: PMC8677696 DOI: 10.3389/fmed.2021.723019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 10/25/2021] [Indexed: 11/22/2022] Open
Abstract
Semen parameters are been found as a key factor to evaluate the count and morphology in the given semen sample. The deep knowledge of male infertility will unravel with semen parameters correlated with molecular and biochemical parameters. The current research study is to identify the motility associated protein and its structure through the in-silico approach. Semen samples were collected and initial analysis including semen parameters was analyzed by using the World Health Organization protocol. Semen biochemical parameters, namely, seminal plasma protein concentration, fructose content, and glucosidase content were calculated and evaluated for correlation. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) and matrix-assisted laser desorption/ionization-time of flight (MALDI-TOF) were carried out for identification of Septin-4 presence in the semen sample. Mascot search was done for protein conformation and in-silico characterization of Septin-4 by structural modeling in Iterative Threading Assembly Refinement (I-TASSER). Twenty-five nanoseconds molecular dynamics (MD) simulations results showed the stable nature of Septin-4 in the dynamic system. Overall, our results showed the presence of motility-associated protein in normospermia and control samples and not in the case of asthenospermia and oligoasthenospermia. Molecular techniques characterized the presence of Septin-4 and as a novel biomarker for infertility diagnosis.
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Affiliation(s)
- A S Vickram
- Department of Biotechnology, Saveetha School of Engineering (SSE), SIMATS, Chennai, India
| | - K Anbarasu
- Department of Bioinformatics, Saveetha School of Engineering (SSE), SIMATS, Chennai, India
| | - Palanivelu Jeyanthi
- Department of Biotechnology, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Chennai, India
| | - G Gulothungan
- Department of Biomedical Engineering, Saveetha School of Engineering (SSE), SIMATS, Chennai, India
| | - R Nanmaran
- Department of Biomedical Engineering, Saveetha School of Engineering (SSE), SIMATS, Chennai, India
| | - S Thanigaivel
- Department of Biotechnology, Saveetha School of Engineering (SSE), SIMATS, Chennai, India
| | - T B Sridharan
- Department of Biotechnology, School of Bio Sciences and Technology, Vellore Institute of Technology (VIT), Vellore, India
| | - Karunakaran Rohini
- Unit of Biochemistry, Faculty of Medicine, AIMST University, Bedong, Malaysia
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Elbardisi H, Arafa M, Singh N, Betts B, Agrawal A, Henkel R, Al-Hadi AA, Burjaq H, Alattar A, Khalafalla K, Majzoub A. The effect of paternal age on intracytoplasmic sperm injection outcome in unexplained infertility. Arab J Urol 2021; 19:274-280. [PMID: 34552779 PMCID: PMC8451663 DOI: 10.1080/2090598x.2021.1955553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Objective : To examine the effect of paternal age on intracytoplasmic sperm injection (ICSI) outcomes in unexplained infertility. Subjects and Methods : This retrospective study, done at the Hamad Medical Corporation, Doha, Qatar screened infertile couples who underwent ICSI between 2014 and 2019 for the inclusion and exclusion criteria defining 'unexplained infertility'. Couples recruited were allocated into two groups: Group A (paternal age <35 years) and Group B (paternal age ≥35 years). Baseline characteristics, investigations including semen and advanced sperm function tests and ICSI records were compared for primary outcomes such as fertilisation, cleavage, clinical pregnancy, miscarriage and live birth; and secondary outcomes such as semen parameters and advanced sperm functions (DNA fragmentation index and oxidation reduction potential). Results : We found that final pregnancy outcomes including clinical pregnancy rate (P = 0.231), live-birth rate (P = 0.143), and miscarriage rates (P = 0.466) were not significantly different between the two age groups. Normal fertilisation (P = 0.01) and cleavage rate after ICSI (P = 0.001) were statistically significant when the age groups were compared. Also, normal sperm morphology was found to be significantly different (P = 0.041). Conclusions : Advanced paternal age affects sperm morphology, fertilisation and embryo cleavage in ICSI but does not appear to affect clinical pregnancy, miscarriage or live-birth rates. ICSI appears to be a valid fertility treatment option in advancing paternal age.
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Affiliation(s)
- Haitham Elbardisi
- Urology Department, Hamad Medical Corporation, Doha, Qatar.,Weill Cornell Medicine-Qatar, Education City, Qatar
| | - Mohamed Arafa
- Urology Department, Hamad Medical Corporation, Doha, Qatar.,Weill Cornell Medicine-Qatar, Education City, Qatar.,Andrology Department, Cairo University, Cairo, Egypt.,American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Neha Singh
- Obstetric & Genecology department King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Bridget Betts
- School of Pharmacy, University of Mississippi, Mississippi, USA
| | - Ashok Agrawal
- American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - Ralf Henkel
- American Center for Reproductive Medicine, Cleveland Clinic, Cleveland, OH, USA.,Department of Metabolism, Digestion and Reproduction, Imperial College London, LondonUK.,Department of Medical Bioscience, University of Western Cape, Bellville, South Africa
| | - Alia A Al-Hadi
- Department of Reproductive Medicine, Hamad Medical Corporation, Doha, Qatar
| | - Hasan Burjaq
- Department of Reproductive Medicine, Hamad Medical Corporation, Doha, Qatar
| | - Alia Alattar
- Urology Department, Hamad Medical Corporation, Doha, Qatar
| | | | - Ahmad Majzoub
- Urology Department, Hamad Medical Corporation, Doha, Qatar.,Weill Cornell Medicine-Qatar, Education City, Qatar
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6
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Mohammadzadeh M, Pourentezari M, Zare-Zardini H, Nabi A, Esmailabad SG, Khodadadian A, Talebi AR. The effects of sesame oil and different doses of estradiol on testicular structure, sperm parameters, and chromatin integrity in old mice. Clin Exp Reprod Med 2021; 48:34-42. [PMID: 33648043 PMCID: PMC7943348 DOI: 10.5653/cerm.2020.03524] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 04/25/2020] [Indexed: 01/04/2023] Open
Abstract
Objective Studies of the effects of estrogens on the male reproductive system have emphasized the role of these hormones in male fertility. Sesame oil has many phytoestrogenic compounds and may improve male fertility. This study investigated the effects of sesame oil and different concentrations of estrogen on sperm parameters and DNA integrity in male mice. Methods Twenty old NMRI (The Naval Medical Research Institute) male mice (40 weeks; weight, 30–35 g) were treated with sesame oil or different concentrations of estrogen (estradiol, 1 and 10 μL/kg/day) or received no treatment (controls). After 35 days, sperm parameters and DNA integrity were assessed and analyzed. Results Sperm count, progressive motility, and morphology were decreased in the group that received 10 μL/kg of estradiol. A remarkably lower percentage of DNA fragmentation and protamine deficiency were detected in the group that received 1 μL/kg of estradiol. In the groups that received sesame oil and 1 μL/kg of estradiol, the numbers of spermatogonia and Leydig cells were higher than in controls. The combination of sesame oil and 1 μL/kg of estradiol led to improved sperm parameters and chromatin and testicular structure. Conclusion Based on this study, consumption of sesame oil and a low concentration of estradiol may improve testicular function in older mice.
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Affiliation(s)
- Masoomeh Mohammadzadeh
- Department of Reproductive Biology, Yazd Reproductive Sciences Institute, Research and Clinical Center for Infertility, Yazd, Iran
| | - Majid Pourentezari
- Department of Biology and Anatomical Sciences, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Hadi Zare-Zardini
- Department of Hematology and Oncology Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.,Department of Sciences, Farhangian University, Isfahan, Iran.,Medical Nanotechnology and Tissue Engineering Research Center, Yazd Reproductive Sciences Institute, Yazd, Iran
| | - Ali Nabi
- Department of Reproductive Biology, Yazd Reproductive Sciences Institute, Research and Clinical Center for Infertility, Yazd, Iran
| | - Saeed Ghasemi Esmailabad
- Department of Reproductive Biology, Yazd Reproductive Sciences Institute, Research and Clinical Center for Infertility, Yazd, Iran
| | - Ali Khodadadian
- Department of Medical Genetics, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Ali Reza Talebi
- Department of Reproductive Biology, Yazd Reproductive Sciences Institute, Research and Clinical Center for Infertility, Yazd, Iran
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Deenadayal Mettler A, Govindarajan M, Srinivas S, Mithraprabhu S, Evenson D, Mahendran T. Male age is associated with sperm DNA/chromatin integrity. Aging Male 2020; 23:822-829. [PMID: 30964371 DOI: 10.1080/13685538.2019.1600496] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
The diagnosis of sperm DNA integrity is increasingly recognized as being crucial to inform the clinical course in infertile couples. An internationally accepted sperm DNA fragmentation assay that determines the proportion of sperm and degree of broken sperm nuclear DNA with recognised clinical thresholds for identifying men at risk of infertility is the Sperm Chromatin Structure Assay (SCSA®). In this study, SCSA® test was utilised to evaluate the relevance of male age on sperm DNA quality in total of 6881 males of Indian origin. Analysis of proportions of DNA fragmentation index (%DFI) and high DNA stainability (%HDS) was performed based on four groups (<35, 35-40, 40-45, and >45 years of age). The impact of increasing male age on %DFI revealed that males >45 years of age had the highest %DFI and lowest %HDS compared to all other age groups (p<.001). This study is the largest population study and first of its kind in India that utilises SCSA® to assess the relevance of %DFI and %HDS to increasing age with potentially important implications for the choice of clinical course based on age and sperm quality of infertile males in India.
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Affiliation(s)
| | | | - Sapna Srinivas
- Infertility Institute and Research Centre, Secunderabad, India
| | - Sridurga Mithraprabhu
- Womens Center, Coimbatore, India
- Australian Centre for Blood Diseases, Alfred Hospital - Monash University, Melbourne, Australia
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Pereira Silva G, Grangeiro VPX, de Oliveira CFD, Neto FL, Barroso DH. α1-Acid glycoprotein and seminal parameter in chronic hemodialysis patients. Urologia 2020; 88:46-49. [PMID: 31989872 DOI: 10.1177/0391560319899842] [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] [Indexed: 11/16/2022]
Abstract
INTRODUCTION To find out the changes in seminal quality of hemodialysis chronic renal patients, we investigated the possible relationship between seminal parameter and seminal α1-acid glycoprotein levels in chronic hemodialysis patients. METHODS Prospective study of prevalence realized in the Hemodialysis Sector of the University Hospital of the University of Brasília, between July 2016 and December 2016. Men aged 18-60 years grouped into case groups (n = 81) represented by chronic hemodialysis patients and control group (n = 20) of healthy men without clinical or laboratory signs of infection and eugonadic. We performed a spermogram, hormonal profile, and assessment of leukocytes and seminal α1-acid glycoprotein level in the semen. The most appropriate statistical test was applied to verify differences and correlations between the studied variables. RESULTS The age in case and control is similar (49.47 ± 5.55 years vs 50.53 ± 4.24 years; p = 0.060). Mean level of α1-acid glycoprotein in human seminal plasma were not significantly different between case and control (48.52 ± 4.90 mg/L vs 46.33 ± 4.29 mg/L; p = 0.10) and between normosperm and oligosperm (47.76 ± 5.15 mg/L vs 49.48 ± 4.49 mg/L; p = 0.19). Mean level of α1-acid glycoprotein in human seminal plasma in the case group, which were classified into severe, moderate, mild, and normosperm, were similar to each other (p = 0.27) and did not correlate (p > 0.05) with the analyzed seminal parameters. All participants presented normal hormonal profile. CONCLUSION Results of this study suggest that the seminal α1-acid glycoprotein levels do not help in the initial evaluation of patients with seminal parameter changes.
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Riesco MF, Valcarce DG, Martínez-Vázquez JM, Robles V. Effect of low sperm quality on progeny: a study on zebrafish as model species. Sci Rep 2019; 9:11192. [PMID: 31371755 PMCID: PMC6671952 DOI: 10.1038/s41598-019-47702-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 07/22/2019] [Indexed: 12/23/2022] Open
Abstract
Nowadays a decrease tendency in human sperm quality has been reported mainly in developed countries. Reproductive technologies have been very valuable in achieving successful pregnancies with low quality sperm samples. However, considering that spermatozoa molecular contribution is increasingly important in recent studies, it is crucial to study whether fertilization with low sperm quality could leave a molecular mark on progeny. This study explores the consequences that fertilization with low sperm quality may have on progeny, using zebrafish as a model. Good and bad breeders were established attending to sperm quality analyses and were individually tracked. Significant differences in fertilization and malformation rates were obtained in progenies between high and low quality sperm samples. Moreover an altered miR profile was found in the progenies of bad zebrafish breeders (upregulation of miR-141 and miR -122 in 24 hpf embryos) and as a consequence, some of their targets involved in male sex development such as dmrt1, suffered downregulation. Our results indicate that fertilizing with high sperm quality samples becomes relevant from a new perspective: to avoid molecular alterations in the progeny that could remain masked and therefore produce unexpected consequences in it.
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Affiliation(s)
- Marta F Riesco
- IEO, Spanish Institute of Oceanography, Planta de Cultivos el Bocal, Santander, 39012, Spain
| | - David G Valcarce
- IEO, Spanish Institute of Oceanography, Planta de Cultivos el Bocal, Santander, 39012, Spain
| | | | - Vanesa Robles
- IEO, Spanish Institute of Oceanography, Planta de Cultivos el Bocal, Santander, 39012, Spain.
- MODCELL GROUP, Department of Molecular Biology, Universidad de León, 24071, León, Spain.
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Simard M, Laprise C, Girard SL. Impact of Paternal Age at Conception on Human Health. Clin Chem 2019; 65:146-152. [DOI: 10.1373/clinchem.2018.294421] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 11/05/2018] [Indexed: 12/14/2022]
Abstract
Abstract
BACKGROUND
The effect of maternal age at conception on various aspects of offspring health is well documented and often discussed. We seldom hear about the paternal age effect on offspring health, although the link is now almost as solid as with maternal age. The causes behind this, however, are drastically different between males and females.
CONTENT
In this review article, we will first examine documented physiological changes linked to paternal age effect. We will start with all morphological aspects of the testis that have been shown to be altered with aging. We will then move on to all the parameters of spermatogenesis that are linked with paternal age at conception. The biggest part of this review will focus on genetic changes associated with paternal age effects. Several studies that have established a strong link between paternal age at conception and the rate of de novo mutations will be reviewed. We will next discuss paternal age effects associated with telomere length and try to better understand the seemingly contradictory results. Finally, severe diseases that affect brain functions and normal development have been associated with older paternal age at conception. In this context, we will discuss the cases of autism spectrum disorder and schizophrenia, as well as several childhood cancers.
SUMMARY
In many Western civilizations, the age at which parents have their first child has increased substantially in recent decades. It is important to summarize major health issues associated with an increased paternal age at conception to better model public health systems.
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Affiliation(s)
- Mathieu Simard
- Centre Intersectoriel en Santé Durable, Université du Québec à Chicoutimi, Chicoutimi, Canada
| | - Catherine Laprise
- Centre Intersectoriel en Santé Durable, Université du Québec à Chicoutimi, Chicoutimi, Canada
| | - Simon L Girard
- Centre Intersectoriel en Santé Durable, Université du Québec à Chicoutimi, Chicoutimi, Canada
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