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Male factor infertility

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https://www.readbyqxmd.com/read/28718159/the-role-of-varicocele-in-male-factor-subfertility
#1
REVIEW
Dillon Sedaghatpour, Boback M Berookhim
PURPOSE OF REVIEW: Varicocele may play a significant role in a subset of patients presenting with male factor infertility. Despite its relatively high prevalence amongst subfertile men, there has been controversy over the effectiveness of surgical treatments, patient selection, and when to administer treatment, particularly in the era of assisted reproductive technology. RECENT FINDINGS: In line with earlier finding, recent evidence strongly suggests that varicocelectomy improves pregnancy rates and semen parameters...
September 2017: Current Urology Reports
https://www.readbyqxmd.com/read/28717268/empiric-medical-therapy-with-hormonal-agents-for-idiopathic-male-infertility
#2
REVIEW
Nicholas N Tadros, Edmund S Sabanegh
INTRODUCTION: Infertility affects approximately 15% of all couples, and male factor contribute to up to 50% of cases. Unfortunately, the cause of male infertility is unknown in about 30% of these cases. Infertility of unknown origin is classified as idiopathic male infertility when abnormal semen parameters are present. Despite not having a definable cause, these men may respond to treatment. This review focuses on the use of empiric hormonal therapies for idiopathic male infertility...
July 2017: Indian Journal of Urology: IJU: Journal of the Urological Society of India
https://www.readbyqxmd.com/read/28717267/semen-culture-and-the-assessment-of-genitourinary-tract-infections
#3
REVIEW
Michael Solomon, Ralf Henkel
The male factor contributes approximately 50% to infertility-related cases in couples with an estimated 12%-35% of these cases attributable to male genital tract infections. Depending on the nature of the infection, testicular sperm production, sperm transport, and sperm function can be compromised. Yet, infections are potentially treatable causes of infertility. Male genital tract infections are increasingly difficult to detect. Moreover, they often remain asymptomatic ("silent") with the result that they are then passed on to the relevant sexual partner leading to fertilization and pregnancy failure as well as illness of the offspring...
July 2017: Indian Journal of Urology: IJU: Journal of the Urological Society of India
https://www.readbyqxmd.com/read/28712079/aryl-hydrocarbon-receptor-gene-transitions-c-742c-t-c-1661g-a-and-idiopathic-male-infertility-a-case-control-study-with-in-silico-and-meta-analysis
#4
Younes Aftabi, Abasalt Hosseinzadeh Colagar, Faramarz Mehrnejad, Ensiyeh Seyedrezazadeh, Emadoddin Moudi
Aryl hydrocarbon receptor (AHR) is responsible for crucial events in male reproductive biology. Here, the association of the AHR transitions c.-742C>T and c.1661G>A with idiopathic male infertility was investigated in a case-control study, which is followed by a meta-analysis and a bioinformatic investigation. Blood and semen samples were obtained from a total of 135 idiopathic infertile men and 130 healthy controls. Participants were genotyped for the transitions using a PCR-RFLP method. A meta-analysis of five sets of data evaluated the association of c...
July 15, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28711916/polymorphisms-of-protamine-genes-contribute-to-male-infertility-susceptibility-in-the-chinese-han-population
#5
Weijun Jiang, Peiran Zhu, Jing Zhang, Qiuyue Wu, Weiwei Li, Shuaimei Liu, Mengxia Ni, Maomao Yu, Jin Cao, Yi Li, Yingxia Cui, Xinyi Xia
Protamine (PRM) plays important roles in the packaging of DNA within the sperm nucleus. To investigate the role of PRM1/2 and transition protein 1 (TNP1) polymorphisms in male infertility, 636 infertile men and 442 healthy individuals were recruited into this case-controlled study of the Chinese Han population, using MassARRAY technology to analyze genotypes. Our analysis showed that there were no significant differences between controls and infertile cases among the five single nucleotide polymorphisms identified in PRM1, PRM2 and TNP1 [rs737008 (G/A), rs2301365 (C/A), rs2070923 (C/A), rs1646022 (C/G) and rs62180545 (A/G)]...
June 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28710293/probing-gata-factor-function-in-mouse-leydig-cells-via-testicular-injection-of-adenoviral-vectors
#6
Gervette M Penny, Rebecca B Cochran, Marjut Pihlajoki, Antti Kyrönlahti, Anja Schrade, Merja Häkkinen, Jorma Toppari, Markku Heikinheimo, David B Wilson
Testicular Leydig cells produce androgens essential for proper male reproductive development and fertility. Here, we describe a new Leydig cell ablation model based on Cre/Lox recombination of mouse Gata4 and Gata6, two genes implicated in the transcriptional regulation of steroidogenesis. The testicular interstitium of adult Gata4(flox/flox);Gata6(flox/flox) mice was injected with adenoviral vectors encoding Cre + GFP (Ad-Cre-IRES-GFP) or GFP alone (Ad-GFP). The vectors efficiently and selectively transduced Leydig cells, as evidenced by GFP reporter expression...
July 14, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28694462/transgenerational-inheritance-of-susceptibility-to-diabetes-induced-male-subfertility
#7
Gabriela Pavlinkova, Hasmik Margaryan, Eva Zatecka, Eliska Valaskova, Fatima Elzeinova, Alena Kubatova, Romana Bohuslavova, Jana Peknicova
Male infertility is a worldwide problem associated with genetic background, environmental factors, and diseases. One of the suspected contributing factors to male infertility is diabetes mellitus. We investigated the molecular and morphological changes in sperms and testicular tissue of diabetic males. The study was performed in streptozotocin-induced type 1 diabetes mouse model. Diabetes decreased sperm concentration and viability and increased sperm apoptosis. Changes in protamine 1/protamine 2 ratio indicated reduced sperm quality...
July 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28676452/water-extracted-tubers-of-cyperus-rotundus-l-enhance-endometrial-receptivity-through-leukemia-inhibitory-factor-mediated-expression-of-integrin-%C3%AE-v%C3%AE-3-and-%C3%AE-v%C3%AE-5
#8
Hee-Jung Choi, Tae-Wook Chung, Mi-Ju Park, Yeon-Seop Jung, Syng-Ook Lee, Keuk-Jun Kim, Ki-Tae Ha
ETHNOPHARMACOLOGICAL RELEVANCE: Cyperus rotundus L. (CR) has been traditionally used as an herbal medicine in Asian countries to treat diverse gynecological disorders. However, the potential therapeutic effect of CR on endometrial receptivity for successful embryo implantation to treat female infertility has not been fully studied. AIM OF STUDY: The aim of this study was to evaluate the effect of water-extracted CR on endometrial receptivity by investigating the expression of leukemia inhibitory factor (LIF) and integrins, cell adhesion, and embryo implantation using mifepristone (RU486; RU)-induced implantation failure model...
July 1, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28670516/generation-of-mouse-spermatogonial-stem-cell-colonies-in-a-non-adherent-culture
#9
Hossein Azizi, Thomas Skutella, Abdolhossein Shahverdi
OBJECTIVE: The properties of self-renewal and division in spermatogonial stem cells (SSCs) support spermatogenesis. There is a number of reported methods for in vitro SSC culture systems. The development of a culture system that effectively supports isolation and selfrenewal of germline stem cells (GSCs) is of tremendous benefit for clinical trials, experimental research, and as potential treatment for male infertility. The current study aims to consider the cultivation and behavior of GSCs in a non-adherent culture system...
July 2017: Cell Journal
https://www.readbyqxmd.com/read/28670429/tumor-necrosis-factor-alpha-308-g-a-single-nucleotide-polymorphism-and-risk-of-sperm-abnormalities-in-iranian-males
#10
Maryam Khademi Bami, Masoud Dehghan Tezerjani, Fateme Montazeri, Hamid Reza Ashrafzadeh Mehrjardi, Saeed Ghasemi-Esmailabad, Mohammad Hasan Sheikhha, Seyed Mehdi Kalantar
BACKGROUND: Signaling molecules such as cytokines regulate spermatogenesis during the maturation of germ cells and sperm apoptosis. Tumor necrosis factor alpha (TNFα) is one of the most-documented cytokines that is involved in spermatogenesis. We investigated the association of the TNFα -308 G/A single nucleotide polymorphism with sperm abnormalities in Iranian males. MATERIALS AND METHODS: This case-control study included 180 infertile men who re- ferred to Yazd Research and Clinical Center for Infertility and 100 healthy normospermic controls...
July 2017: International Journal of Fertility & Sterility
https://www.readbyqxmd.com/read/28670427/kisspeptin-a-potential-factor-for-unexplained-infertility-and-impaired-embryo-implantation
#11
Aaida Mumtaz, Aqsa Khalid, Zehra Jamil, Syeda Sadia Fatima, Sara Arif, Rehana Rehman
BACKGROUND: Kisspeptin (KP) is a neuropeptide that causes the release of the gonadotropin releasing hormone, which controls hypothalamo pituitary ovarian axis and exerts a number of peripheral effects on reproductive organs. The primary objective of this study was to compare baseline KP levels in females with different types of infertility and identify possible correlations with risk of failure to conceive, preclinical abortion and pregnancy after intracytoplasmic sperm injection (ICSI)...
July 2017: International Journal of Fertility & Sterility
https://www.readbyqxmd.com/read/28666211/carnitine-organic-cation-transporter-2-octn2-contributes-to-rat-epididymal-epithelial-cell-growth-and-proliferation
#12
Dong Li, Jiumin Liu, Wei Du, Huang Liu, Weilin Xiao, Xiaosong Song, Zhaoying Fan, Chuangbo Ke, Qiangguo Yu, Weibing Qin, Yunge Tang, Xiaoyong Pu
Carnitine/organic cation transporter 2 (OCTN2) is localized at the basolateral membrane of epididymal epithelial cells, and mainly serves to reabsorb carnitine as an essential factor for sperm maturation; however, its functional features in epididymal epithelial cells have remained unclear. We isolated primary epididymal epithelial cells from rat epididymides and verified their phenotype by detecting the presence of cytokeratin-19 (CK-19, an epithelial cell marker) and the absence vimentin (an interstitial cell marker)...
June 27, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28661897/obesity-and-male-infertility
#13
Barbara E Kahn, Robert E Brannigan
PURPOSE OF REVIEW: The prevalence of obesity has risen steadily for the past 35 years and presently affects more than a third of the US population. A concurrent decline in semen parameters has been described, and a growing body of literature suggests that obesity contributes to the male infertility. The purpose of this review is to examine the effects of obesity on male fertility, the mechanisms by which impaired reproductive health arise, and the outcomes of treatment. RECENT FINDINGS: Obesity alters the hypothalamic-pituitary-gonadal axis both centrally and peripherally, resulting in hypogonadotropic, hyperestrogenic hypogonadism...
June 28, 2017: Current Opinion in Urology
https://www.readbyqxmd.com/read/28658802/the-impact-of-oxidative-stress-on-testicular-function-and-the-role-of-antioxidants-in-improving-it-a-review
#14
REVIEW
Nematollah Asadi, Mahmoud Bahmani, Arash Kheradmand, Mahmoud Rafieian-Kopaei
Oxidative stress is an important factor for development of male infertility because of very high rate of cell division and mitochondrial oxygen consumption in testicular tissue as well as comparably higher levels of unsaturated fatty acids in this tissue than in other tissues. Moreover, the level of oxygen pressure is low due to the weakness of testicular artery; therefore, there is a severe cell competition for oxygen. Therefore, the testicular tissue and male reproductive system are particularly susceptible to oxidative stress...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28656231/cytogenic-and-molecular-studies-of-male-infertility-in-cases-of-y-chromosome-balanced-reciprocal-translocation
#15
Ding Wang, Rui Chen, Shu Kong, Qian-Ying Pan, Yu-Hong Zheng, Wen-Jun Qiu, Yong Fan, Xiao-Fang Sun
Y-autosomal translocation has been previously reported in association with male infertility; however, the mechanisms of Y-autosomal translocation and non‑obstructive azoospermia or severe oligospermia remain unclear. G‑banding and fluorescence in situ hybridization (FISH) were performed to analyze the translocation of chromosomes, and a single nucleotide polymorphism (SNP) genotyping assay was used to test mutations. The present study describes three new cases with a de novo balanced translocation t(Y;13), t(Y;9) and t(Y;6)...
August 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28646941/postwash-total-motile-sperm-count-should-it-be-included-as-a-standard-male-infertility-work-up
#16
Khaled Madbouly, Ahmed Isa, Mohamad Habous, Raed Almannie, Basim Abu-Rafea, Saleh Binsaleh
INTRODUCTION: Pregnancy rates after intrauterine insemination (IUI) varies greatly. We aimed to identify pre and post processing semen analysis parameters that may be predictive of successful pregnancy in couples undergoing IUI. MATERIALS AND METHODS: A retrospective study of the records of all couples underwent IUI for a 2 year period at our infertility center. Different characteristics of female subjects, pre and post processing semen parameters and treatment parameters were compared statistically...
June 2017: Canadian Journal of Urology
https://www.readbyqxmd.com/read/28646898/prevalence-of-chlamydia-trachomatis-neisseria-gonorrhoeae-mycoplasma-genitalium-and-ureaplasma-urealyticum-infections-using-a-novel-isothermal-simultaneous-rna-amplification-testing-method-in-infertile-males
#17
Ling Qing, Qi-Xiang Song, Jian-Li Feng, Hai-Yan Li, Guiming Liu, Hai-Hong Jiang
BACKGROUND: The purpose of this study was to evaluate the prevalence of Chlamydia trachomatis, Neisseria gonorrhoeae, Mycoplasma genitalium and Ureaplasma urealyticum infections in infertile men that consulted our outpatient departments using a novel simultaneous amplification testing (SAT) that is RNA-detection based. The possible impact of C. trachomatis, N. gonorrhoeae, M. genitalium and U. urealyticum infections on semen parameters was also noted in the present study. METHODS: A total of 2607 males that were diagnosed with infertility were included in this study...
June 24, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28646871/coffee-and-caffeine-intake-and-male-infertility-a-systematic-review
#18
REVIEW
Elena Ricci, Paola Viganò, Sonia Cipriani, Edgardo Somigliana, Francesca Chiaffarino, Alessandro Bulfoni, Fabio Parazzini
BACKGROUND: Semen quality, a predictor of male fertility, has been suggested declining worldwide. Among other life style factors, male coffee/caffeine consumption was hypothesized to influence semen parameters, but also sperm DNA integrity. To summarize available evidence, we performed a systematic review of observational studies on the relation between coffee/caffeine intake and parameters of male fertility including sperm ploidy, sperm DNA integrity, semen quality and time to pregnancy...
June 24, 2017: Nutrition Journal
https://www.readbyqxmd.com/read/28637085/successful-delivery-derived-from-cryopreserved-rare-human-spermatozoa-with-novel-cryopiece
#19
J Sun, W Chen, L Zhou, J Hu, Z Li, Z Zhang, Y Wu
Herein, we report the clinical outcomes following intracytoplasmic sperm injection (ICSI) with cryopiece cryopreserved rare human spermatozoa from severe male factor infertility patients. We established a novel cryopiece system on the basis of previous studies. In this study, 126 spermatozoa from four patients with non-obstructiveazoospermia (NOA) or severe oligozoospermia were stored in cryopiece and then thawed on the day of the oocyte retrieval, 88 (83%) spermatozoa were recovered with a 47.5% (38 of 80) motile rate...
June 21, 2017: Andrology
https://www.readbyqxmd.com/read/28635411/single-nucleotide-polymorphisms-in-the-human-rad21l-gene-may-be-a-genetic-risk-factor-for-japanese-patients-with-azoospermia-caused-by-meiotic-arrest-and-sertoli-cell-only-syndrome
#20
Gaku Minase, Toshinobu Miyamoto, Yasushi Miyagawa, Masashi Iijima, Hiroto Ueda, Yasuaki Saijo, Mikio Namiki, Kazuo Sengoku
Genetic mechanisms are implicated in some cases of male infertility. Recently, it was demonstrated that male mice lacking the gene for RAD21L exhibited azoospermia caused by meiotic arrest. Mouse RAD21L is a functionally relevant meiotic α-kleisin that is essential for male fertility. Therefore, we hypothesized that RAD21L mutations or polymorphisms may be associated with male infertility, especially azoospermia secondary to meiotic arrest. To determine if RAD21L defects are associated with azoospermia in groups of patients with meiotic arrest, we performed direct sequencing of the RAD21L coding regions in 38 Japanese patients with meiotic arrest and in 200 normal controls...
February 21, 2017: Human Fertility: Journal of the British Fertility Society
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