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Pan M, Luo X, Zhang Z, Li J, Shahzad K, Danba Z, Caiwang G, Chilie W, Chen X, Zhao W. The expression spectrum of yak epididymal epithelial cells reveals the functional diversity of caput, corpus and cauda regions. Genomics 2024; 116:110912. [PMID: 39117249 DOI: 10.1016/j.ygeno.2024.110912] [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: 02/23/2024] [Revised: 07/25/2024] [Accepted: 08/06/2024] [Indexed: 08/10/2024]
Abstract
Sperm undergo a series of changes in the epididymis region before acquiring the ability to move and fertilize, and the identification of genes expressed in a region-specific manner in the epididymis provides a valuable insight into functional differences between regions. We collected epididymal tissue from three yaks and cultured epithelial cells from the caput, corpus and cauda regions of the yak epididymis using the tissue block method. RNA sequencing analysis (RNA-seq) technology was used to detect gene expression in yak epididymal caput, corpus and cauda epithelial cells. The results showed that the DEGs were highest in the caput vs. corpus comparison, and lowest in the corpus vs. cauda comparison. Six DEGs were verified by real-time fluorescence quantitative PCR (qRT-PCR), consistent with transcriptome sequencing results. The significantly enriched DNA replication pathway in the caput vs. corpus was coordinated with cell proliferation, while upregulated DEGs such as POLD1 and MCM4 were found in the DNA replication pathway. The AMPK signaling pathway was found significantly enriched in the caput vs cauda, suggesting its involvement in sperm maturation and capacitation. The TGF beta signaling pathway was screened in the corpus vs cauda and is crucial for mammalian reproductive regulation. Upregulated DEGs (TGFB3, INHBA, INHBB) are involved in the TGF beta signaling pathway. This study provides a reference for culturing yak epididymal epithelial cells in vitro, and elucidates the transcriptional profiles of epithelial cells in different segments of the epididymis, revealing the regulatory and functional differences between different segments, providing basic data for exploring the molecular mechanism of yak sperm maturation and improving the reproductive capacity of high-altitude mammals.
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Affiliation(s)
- Meilan Pan
- College of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621000, China
| | - Xiaofeng Luo
- College of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621000, China
| | - Zhenzhen Zhang
- College of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621000, China
| | - Jingjing Li
- College of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621000, China
| | - Khuram Shahzad
- Department of Biosciences, COMSATS University Islamabad, Park Road, Islamabad 45550, Pakistan
| | - Zhaxi Danba
- Science and Technology Research and Promotion Center, Agricultural and Animal Husbandry (Grass Industry), Naqu, Tibet 852200, China
| | - Gongbu Caiwang
- Tibet Naqu Municipal Agriculture and Rural Affairs Bureau, Naqu, Tibet 852000, China
| | - Wangmu Chilie
- Science and Technology Research and Promotion Center, Agricultural and Animal Husbandry (Grass Industry), Naqu, Tibet 852200, China
| | - Xiaoying Chen
- Institute of Animal Science, Tibet Academy of Agricultural and Animal Husbandry Science, Lhasa 850009, China.
| | - Wangsheng Zhao
- College of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621000, China.
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Crafa A, Cannarella R, Calogero AE, Gunes S, Agarwal A. Behind the Genetics: The Role of Epigenetics in Infertility-Related Testicular Dysfunction. Life (Basel) 2024; 14:803. [PMID: 39063558 PMCID: PMC11277947 DOI: 10.3390/life14070803] [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: 05/27/2024] [Revised: 06/20/2024] [Accepted: 06/21/2024] [Indexed: 07/28/2024] Open
Abstract
In recent decades, we have witnessed a progressive decline in male fertility. This is partly related to the increased prevalence of chronic diseases (e.g., obesity and diabetes mellitus) and risky lifestyle behaviors. These conditions alter male fertility through various non-genetic mechanisms. However, there is increasing evidence that they are also capable of causing sperm epigenetic alterations, which, in turn, can cause infertility. Furthermore, these modifications could be transmitted to offspring, altering their general and reproductive health. Therefore, these epigenetic modifications could represent one of the causes of the progressive decline in sperm count recorded in recent decades. This review focuses on highlighting epigenetic modifications at the sperm level induced by non-genetic causes of infertility. In detail, the effects on DNA methylation, histone modifications, and the expression profiles of non-coding RNAs are evaluated. Finally, a focus on the risk of transgenerational inheritance is presented. Our narrative review aims to demonstrate how certain conditions can alter gene expression, potentially leading to the transmission of anomalies to future generations. It emphasizes the importance of the early detection and treatment of reversible conditions (such as obesity and varicocele) and the modification of risky lifestyle behaviors. Addressing these issues is crucial for individual health, in preserving fertility, and in ensuring the well-being of future generations.
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Affiliation(s)
- Andrea Crafa
- Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy; (A.C.); (R.C.); (A.E.C.)
- Global Andrology Forum, Moreland Hills, OH 44022, USA
| | - Rossella Cannarella
- Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy; (A.C.); (R.C.); (A.E.C.)
- Global Andrology Forum, Moreland Hills, OH 44022, USA
- Glickman Urological & Kidney Institute, Cleveland Clinic Foundation, Cleveland, OH 44106, USA
| | - Aldo E. Calogero
- Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy; (A.C.); (R.C.); (A.E.C.)
- Global Andrology Forum, Moreland Hills, OH 44022, USA
| | - Sezgin Gunes
- Global Andrology Forum, Moreland Hills, OH 44022, USA
- Department of Medical Biology, Faculty of Medicine, Ondokuz Mayis University, 55280 Samsun, Türkiye
| | - Ashok Agarwal
- Global Andrology Forum, Moreland Hills, OH 44022, USA
- Cleveland Clinic Foundation, Cleveland, OH 44195, USA
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Singer ST, Fischer R, Allen I, Lal A, Vichinsky E, Yuan Q, Wang ZJ. Pituitary iron and factors predictive of fertility status in transfusion dependent thalassemia. Haematologica 2021; 106:1740-1744. [PMID: 33121232 PMCID: PMC8168491 DOI: 10.3324/haematol.2020.252726] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Indexed: 11/25/2022] Open
Affiliation(s)
- Sylvia T Singer
- Division of Hematology-Oncology, Department of Pediatrics, University of California San Francisco, UCSF Benioff Children's Hospital Oakland, Oakland, CA.
| | | | | | - Ashutosh Lal
- Division of Hematology-Oncology, Department of Pediatrics, University of California San Francisco, UCSF Benioff Children's Hospital Oakland, Oakland, CA
| | - Elliott Vichinsky
- Division of Hematology-Oncology, Department of Pediatrics, University of California San Francisco, UCSF Benioff Children's Hospital Oakland, Oakland, CA
| | - Qing Yuan
- University of Texas Southwestern Medical Center
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Ma Y, Zhou Y, Xiao Q, Zou SS, Zhu YC, Ping P, Chen XF. Seminal exosomal miR-210-3p as a potential marker of Sertoli cell damage in Varicocele. Andrology 2021; 9:451-459. [PMID: 33000559 DOI: 10.1111/andr.12913] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 09/13/2020] [Accepted: 09/22/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Varicocoele-associated stressors, such as hypoxia and heat, can damage cell function and viability, and some exosomal biomarkers released from impaired cells may reflect the cell status in testis. OBJECTIVES To find if seminal exosomal microRNAs can reflect the Sertoli cell function in varicocoele. MATERIALS AND METHODS Experimental left varicocoele rat model was established (n = 24), and patients with different grades of varicocoele (n = 104) were enrolled. Primary rat Sertoli cells were isolated with enzymatic hydrolysis. Exosomes were isolated from primary rat Sertoli cells, rat epididymis tissue, and human seminal plasma with polymer-based precipitation method. Exosomal microRNAs were quantified with qPCR. Inhibin-B was detected with enzyme immunoassay. The correlation analysis between microRNA and inhibin-B was evaluated with Spearman's correlation. RESULTS We screened 12 previously reported hypoxia-responsive microRNAs in the primary rat Sertoli cells and found that 4 exosomal microRNAs increased significantly in response to in vitro hypoxia treatment (P < .05). Of the 4 microRNAs, only miR-210-3p was upregulated in the rats with experimental varicocoele (P < .01). In the patients with varicocoele, we found that seminal exosomal miR-210-3p significantly increased in patients with grade II and III varicocoele (P < .01), and miR-210-3p negatively correlated with sperm count (P < .01) and seminal inhibin-B expression (r = -0.39, P < .01). For the 30 patients with microsurgical varicocelectomy, the operation notably decreased miR-210-3p (P < .01). DISCUSSION AND CONCLUSION Seminal exosomal miR-210-3p may be a novel, sensitive, and non-invasive biomarker of Sertoli cell damage in varicocoele.
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Affiliation(s)
- Yi Ma
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
| | - Yan Zhou
- Department of Central Lab, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Qian Xiao
- Shanghai Human Sperm Bank, Shanghai, China
| | | | - Yin-Ci Zhu
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
| | - Ping Ping
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
| | - Xiang-Feng Chen
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
- Shanghai Human Sperm Bank, Shanghai, China
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Effect of Wuzi Yanzong on Reproductive Hormones and TGF-β1/Smads Signal Pathway in Rats with Oligoasthenozoospermia. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 2019:7628125. [PMID: 31118967 PMCID: PMC6500641 DOI: 10.1155/2019/7628125] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 02/28/2019] [Accepted: 04/01/2019] [Indexed: 11/22/2022]
Abstract
Introduction Wuzi Yanzong (WZYZ) formula, a famous traditional Chinese medicinal prescription, has been widely used to treat kidney essence insufficiency-induced oligoasthenozoospermia in ancient and modern clinical practice. Previous studies have demonstrated that WZYZ formula exhibits significantly therapeutic activity. The aim of this study was to evaluate the effect of WZYZ formula on the reproductive hormone levels and the TGF-β1/Smads signal pathway in the testis, to explore the underlying mechanisms of WZYZ formula to improve spermatogenic function of testis in rats with oligoasthenozoospermia. Materials and Methods In order to control the quality of the drug, the main components of the WZYZ formula were analyzed by HPLC. A rat model of oligoasthenozoospermia was established, by daily administration of tripterygium glucosides for 4 weeks, and treated with 1.62g/kg of WZYZ formula. The testes were histopathologically examined and serum levels of gonadotropin release hormone (GnRH), estradiol (E2), follicle-stimulating hormone (FSH), testosterone (T), and luteinizing hormone (LH) were measured by ELISA. TGf-β1, Smad2, and Smad4 mRNA and protein levels in the testis were evaluated by immunohistochemistry (IHC), quantitative real-time RT-PCR (qRT-PCR), and Western blotting (WB). Result Oral administration of WZYZ formula restored testicular structure and significantly increased the histology score in the oligoasthenozoospermic rats. In addition, WZYZ also significantly increased the serum levels of GnRH, LH, E2, and T and decreased that of FSH. Meanwhile, TGf-β1, Smad2, and Sma4 expression levels were significantly decreased. Conclusions WZYZ alleviates oligoasthenozoospermia by restoring the reproductive hormones and targeting the TGf-β1/Smads pathway.
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Alhalabi M. Predictive value of serum Inhibin-B levels as an indicator of the presence of testicular spermatozoa in non-obstructive azoospermia. MIDDLE EAST FERTILITY SOCIETY JOURNAL 2016. [DOI: 10.1016/j.mefs.2016.05.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Abstract
Fertility is a couple concept that has been measured since the beginning of demography, and male fecundity (his biological capacity to reproduce) is a component of the fertility rate. Unfortunately, we have no way of measuring the male component directly, although several indirect markers can be used. Population registers can be used to monitor the proportion of childless couples, couples who receive donor semen, trends in dizygotic twinning, and infertility diagnoses. Studies using time-to-pregnancy (TTP) may identify couple subfecundity, and TTP data will correlate with sperm quality and quantity as well as sexual activity and a number of other conditions. Having exposure data available for couples with a fecund female partner would make TTP studies of interest in identifying exposures that may affect male fecundity. Biological indicators such as sperm quality and quantity isolate the male component of fertility, and semen data therefore remain an important source of information for research. Unfortunately, often over half of those invited to provide a sperm sample will refuse, and the study is then subject to a selection that may introduce bias. Because the most important time windows for exposures that impair semen production could be early fetal life, puberty, and the time of ejaculation; longitudinal data over decades of time are required. The ongoing monitoring of semen quality and quantity should continue, and surveys monitoring fertility and waiting TTP should also be designed.
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Toulis KA, Iliadou PK, Venetis CA, Tsametis C, Tarlatzis BC, Papadimas I, Goulis DG. Inhibin B and anti-Mullerian hormone as markers of persistent spermatogenesis in men with non-obstructive azoospermia: a meta-analysis of diagnostic accuracy studies. Hum Reprod Update 2010; 16:713-724. [DOI: 10.1093/humupd/dmq024] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
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Yapanoglu T, Kocaturk H, Aksoy Y, Alper F, Ozbey I. Long-term efficacy and safety of interferon-alpha-2B in patients with mumps orchitis. Int Urol Nephrol 2010; 42:867-71. [PMID: 20431945 DOI: 10.1007/s11255-010-9737-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2010] [Accepted: 03/30/2010] [Indexed: 11/25/2022]
Abstract
The aim of this study was to determine long-term efficacy and safety subcutaneous injection of interferon-alpha-2B in patients with mumps orchitis in terms of testicular volume and other testicular functions. Mumps orchitis was evaluated in 37 patients. Patients were hospitalized and administered 1 × 3,000,000 IU subcutaneous injection of interferon-alpha-2B daily for 7 days. The testicular volumes of all the patients were measured by ultrasonography in the 18th month following treatment termination. The testes volumes were evaluated by descriptive statistics as percentages. Patients were divided into three groups according to testes volumes and differences between the involved and non-involved testicles. Group I included patients with normal testes volume (> 12 ml) and a difference between testes of less than 2 ml or 20%; Group II (atrophic groups) included patients with testes volume of less than 12 ml; and Group III (hypotrophic groups) included patients with testes volume of greater than 12 ml and a difference between testes of more than 2 ml or 20%. Groups were compared in terms of results of semen analysis and serum follicle stimulating hormone (FSH) and luteinizing hormone (LH) levels. Patients' ages ranged between 17 and 41 years (mean: 28.3 years). A total of nine atrophy cases were identified. Sixteen patients were determined to have hypotrophic testes with a difference of 2-10 ml or 20% between the involved and non-involved testicles, despite the absence of testicular atrophy. A comparison of groups revealed that sperm density, total sperm count, total motile sperm count, and motility percentage were significantly higher in Group I than in the other groups, while serum FSH and LH levels were lower in Group I than in the other groups. Although the use of interferon-alpha-2B appears to prevent testicular atrophy and protect testicular function, it leads to a considerable difference in the volume between testicles and a significant loss of testicular function. As a result, further studies are required in order to investigate the efficacy of the drug.
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Affiliation(s)
- Turgut Yapanoglu
- Department of Urology, Ataturk University, Medical Faculty, Erzurum, Turkey.
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10
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Abstract
OBJECTIVE The aim of this study was to explore effectors of the pituitary-testicular axis suitable as potential biochemical markers to screen for testosterone doping. DESIGN Pilot study with male bodybuilding athletes with a self-reported history of testosterone doping (repeated intramuscular administration of testosterone preparations, last injection 8 weeks or less ago) compared with an equal sized control group matched for sex, age, and body mass index. SETTING Endocrine outpatients. PARTICIPANTS Fifteen healthy young men of white background. INTERVENTIONS None. MAIN OUTCOME MEASURES Inhibin B, testosterone, luteinizing hormone (LH), follicle-stimulating hormone (FSH). RESULTS Although the levels of testosterone, LH, and FSH did not differ between the 2 groups, the serum concentrations of inhibin B in individuals with a history of testosterone doping were exclusively at or below the lower limit of the normal range for adult men (100-400 pg/mL). Inhibin B was significantly lower in those men who used testosterone for weight lifting (76.1 +/- 36.3 ng/L [mean +/- SD]) than in controls (182.1 +/- 35.4 ng/L). CONCLUSION A low concentration of serum inhibin B may reflect the application of exogenous testosterone and appears to be a potential marker associated with anabolic androgenic steroid doping.
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Myers GM, Lambert-Messerlian GM, Sigman M. Inhibin B reference data for fertile and infertile men in Northeast America. Fertil Steril 2009; 92:1920-3. [DOI: 10.1016/j.fertnstert.2008.09.033] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2008] [Revised: 09/04/2008] [Accepted: 09/08/2008] [Indexed: 10/21/2022]
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Lenzi A, Balercia G, Bellastella A, Colao A, Fabbri A, Foresta C, Galdiero M, Gandini L, Krausz C, Lombardi G, Lombardo F, Maggi M, Radicioni A, Selice R, Sinisi AA, Forti G. Epidemiology, diagnosis, and treatment of male hypogonadotropic hypogonadism. J Endocrinol Invest 2009; 32:934-8. [PMID: 19955846 DOI: 10.1007/bf03345775] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Hypogonadotropic hypogonadism (HH), or secondary hypogonadism, is a clinical condition due to an impairment of the pituitary function, characterized by low testosterone plasma levels associated with normal or low FSH and LH plasma levels. An impairment of gonadotropin secretion and, therefore, a reduced efficiency of spermatogenesis was reported to be frequently associated to conditions different from the classical causes of secondary hypogonadism. These conditions (metabolic, endocrine and eating disorders, physical exercise etc.) have been associated with a non-classical form of HH that could be called "functional" HH (FHH). FHH differs from the classical one by the evidence that gonadotropin levels are in the low-normal range, but are inadequate for the testosterone levels, that often are also in the low-normal range. This commentary aims at reviewing knowledge on the forms of male HH in order to indicate and discuss clinical context, diagnostic and therapeutic approach in the less known non-classical form, i.e. FHH.
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Affiliation(s)
- A Lenzi
- Department of Medical Physiopathology, University of Rome La Sapienza, Rome, Italy
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Ozden C, Ozdal OL, Bulut S, Guzel O, Koyuncu HH, Memis A. Effect of varicocelectomy on serum inhibin B levels in infertile patients with varicocele. ACTA ACUST UNITED AC 2009; 42:441-3. [DOI: 10.1080/00365590802028141] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Cuneyt Ozden
- Department of Urology, Numune Education and Research Hospital, Ankara, Turkey
| | - Ozdem Levent Ozdal
- Department of Urology, Numune Education and Research Hospital, Ankara, Turkey
| | - Suleyman Bulut
- Department of Urology, Numune Education and Research Hospital, Ankara, Turkey
| | - Ozer Guzel
- Department of Urology, Numune Education and Research Hospital, Ankara, Turkey
| | | | - Ali Memis
- Department of Urology, Numune Education and Research Hospital, Ankara, Turkey
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del Valle L, Bustos-Obregón E, Gonzales GF. Serum reproductive hormone levels and sperm production in male adult rats after treatment witharresting, a fraction obtained from seminiferous tubules conditioned medium. Andrologia 2009. [DOI: 10.1111/j.1439-0272.2003.tb00872.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Hsieh SJ, Chiu YW, Li WF, Wu CH, Chen HI, Chuang HY. Increased concentrations of serum inhibin B among male workers with long-term moderate lead exposure. THE SCIENCE OF THE TOTAL ENVIRONMENT 2009; 407:2603-2607. [PMID: 19193394 DOI: 10.1016/j.scitotenv.2008.12.056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2008] [Revised: 12/22/2008] [Accepted: 12/22/2008] [Indexed: 05/27/2023]
Abstract
Lead is known to have an adverse effect to human reproductive system. This study investigates the association between different lead indices (both current and cumulative) and serum inhibin B as well as hormone concentrations in a group of 181 male lead workers. We used data collected during annual health examinations, including measurements of blood lead levels, inhibin B, follicle stimulating hormone (FSH), luteinizing hormone (LH), and testosterone (TTE) as well as age, gender, height, weight, smoking and drinking habits. The cumulative lead index included index of cumulative blood lead (ICL) and time weighted index of cumulative blood lead (TWICL) which were calculated from the series blood lead concentrations by annual health examinations since 1991 to the time of the study. Data was analyzed by Pearson correlation and multiple regressions. We found the Pearson correlation coefficients of ICL and TWICL vs. inhibin B to be 0.220 (p=0.003) and 0.231 (p=0.008), respectively. After adjusting for age, smoking, drinking, LH, FSH, and TTE, our multiple regression models revealed that with each unit increase in ICL and TWICL, there was a 0.047 pg/mL (p=0.017) and 1.333 pg/mL (p=0.007) increase in inhibin B. We found an association between cumulative lead index and concentration of serum inhibin B in male workers exposed to lead over long period, possibly indirectly affecting spermatogenesis.
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Affiliation(s)
- Shu-Jung Hsieh
- Department of Public Health, College of Health Sciences, and Center of Excellence for Environmental Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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Duvilla E, Lejeune H, Trombert-Paviot B, Gentil-Perret A, Tostain J, Levy R. Significance of inhibin B and anti-Müllerian hormone in seminal plasma: a preliminary study. Fertil Steril 2008; 89:444-8. [PMID: 17681330 DOI: 10.1016/j.fertnstert.2007.03.032] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2006] [Revised: 03/06/2007] [Accepted: 03/07/2007] [Indexed: 10/23/2022]
Abstract
OBJECTIVE To evaluate the predictive value of seminal inhibin B and anti-Müllerian hormone (AMH) on the outcome of testicular sperm extraction (TESE) in patients with nonobstructive azoospermia. DESIGN Prospective study. SETTING Reproductive biology department. PATIENT(S) Forty-seven normospermic, 28 oligozoospermic, and 68 azoospermic patients. INTERVENTION(S) Testicular sperm extraction. MAIN OUTCOME MEASURE(S) Seminal inhibin B and AMH measure. RESULT(S) The seminal values of inhibin B and AMH are widely dispersed. Both inhibin B and AMH seminal values are significantly different between the three groups. The average rates of seminal AMH (not inhibin B) differ significantly according to the etiology of the azoospermia. Both seminal markers are correlated. A significant positive correlation could be observed between the seminal inhibin B and the sperm count, but not for AMH. A significant correlation also exists between seminal and serum inhibin B. The predictive value for TESE outcome of each parameter is rather low. Conversely, a logistic regression combining serum FSH, seminal inhibin B, and AMH produced a satisfying area under the curve of 0.985. CONCLUSION(S) Seminal inhibin B and AMH values are proposed. Separately, seminal markers are poor predictors of TESE outcome. A logistic regression model led to a satisfying area under the curve of 0.985.
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Affiliation(s)
- Emma Duvilla
- Laboratoire de Biologie de la Reproduction, Hôpital Nord, CHU de Saint Etienne, Saint Etienne, France
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Serum anti-Müllerian hormone and inhibin B in disorders of spermatogenesis. Fertil Steril 2007; 88:516-8. [PMID: 17462637 DOI: 10.1016/j.fertnstert.2006.11.110] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2006] [Revised: 11/13/2006] [Accepted: 11/21/2006] [Indexed: 11/20/2022]
Abstract
This study investigates circulating concentrations of AMH and inhibin B in men with azoospermia. Serum AMH and inhibin B are significantly lower in the men with nonobstructive azoospermia compared to the controls and the men with obstructive azoospermia, suggesting that these hormones could be markers of nonobstructive azoospermia.
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del Valle LJ, Bustos-Obregón E, Gonzales GF. Serum reproductive hormone levels and sperm production in male adult rats after treatment with arresting, a fraction obtained from seminiferous tubules conditioned medium. Andrologia 2004; 35:351-7. [PMID: 15018137 DOI: 10.1046/j.0303-4569.2003.00592.x] [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: 11/20/2022] Open
Abstract
This study used seminiferous tubule (ST) segments from adult rats to condition culture medium that had been concentrated, size fractioned and administered 10-84 days to adult rats by subcutaneous or intratesticular injection and the effects on testes weight, testosterone, luteinizing hormone (LH) and FSH levels and (homogenization-resistant) epididymal sperm count were determined. The conditioned medium obtained 2 days after culture of ST was fractionated in a 30-100 kDa component. The fraction was injected subcutaneously or intratesticularly. This factor(s), named arresting, decreases sperm count in the epididymis from 13 days to 84 days of treatment without changes in serum LH or testosterone levels. The results of the present study suggest that arresting acts on spermiogenesis/spermiation and/or the entry of sperm into the epididymis from the efferent ductules.
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Affiliation(s)
- L J del Valle
- Faculty of Medicine, University of Chile, Santiago, Chile
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