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https://www.readbyqxmd.com/read/28917614/age-and-fecundability-in-a-north-american-preconception-cohort-study
#1
Amelia K Wesselink, Kenneth J Rothman, Elizabeth E Hatch, Ellen M Mikkelsen, Henrik T Sørensen, Lauren A Wise
BACKGROUND: There is a well-documented decline in fertility treatment success with increasing female age; however, there are few preconception cohort studies examining female age and natural fertility. In addition, data on male age and fertility is inconsistent. Given the increasing number of couples attempting conception at older ages, a more detailed characterization of age-related fecundability in the general population is of great clinical utility. OBJECTIVE: To examine the association between female and male age with fecundability...
September 13, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28915635/dysregulation-of-an-x-linked-primate-specific-epididymal-microrna-cluster-in-unexplained-asthenozoospermia
#2
Xingrong Qing, Jian Shi, Tingting Dong, Chunlin Wu, Lian Hu, Honggang Li
Asthenoszoopermia, characterized by reduced sperm motility, is one of the primary forms of male infertility. Whereas most cases were diagnosed into unexplained asthenozoospermia (UA) because the etiology cannot be identified. In animal models, epigenetic dysregulation in epididymis can impair sperm maturation and result in asthenozoospermia. However, researches of epididymal epigenetic regulation on humans are impeded by the difficulty in obtaining epididymal tissues. We previously identified cell-free seminal microRNAs predominately derived from epididymis in human ejaculate...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28911932/varicocelectomy-to-upgrade-semen-quality-to-allow-couples-to-use-less-invasive-forms-of-assisted-reproductive-technology
#3
Mary K Samplaski, Kirk C Lo, Ethan D Grober, Armand Zini, Keith A Jarvi
OBJECTIVE: To determine the magnitude of improvement in semen parameters after a varicocelectomy and the fraction that have improvements such that couples needing IVF or IUI are "upgraded" to needing less invasive assisted reproductive technology (ART). DESIGN: Retrospective review of prospectively collected data. SETTING: Academic medical centers. PATIENT(S): Men presenting for a fertility evaluation with a clinical varicocele...
September 11, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28904906/a-step-by-step-guide-to-office-based-sperm-retrieval-for-obstructive-azoospermia
#4
REVIEW
Robert M Coward, Jesse N Mills
A variety of surgical options exists for sperm retrieval in the setting of obstructive azoospermia (OA). With appropriate preparation, the majority of these techniques can safely be performed in the office with local anesthesia and with or without monitored anesthesia care (MAC). The available techniques include percutaneous options such as percutaneous epididymal sperm aspiration (PESA) and testicular sperm aspiration (TESA), as well as open techniques that include testicular sperm extraction (TESE) and microsurgical epididymal sperm aspiration (MESA)...
August 2017: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28904798/patterns-of-residual-hiv-1-rna-shedding-in-the-seminal-plasma-of-patients-on-effective-antiretroviral-therapy
#5
Christophe Pasquier, Marie Walschaerts, Stéphanie Raymond, Nathalie Moinard, Karine Saune, Myriam Daudin, Jacques Izopet, Louis Bujan
BACKGROUND: More and more HIV-1-infected men on effective antiretroviral treatment (ART) have unprotected sex in order to procreate. The main factor influencing transmission is seminal HIV shedding. While the risk of HIV transmission is very low, it is difficult to assess in individuals. Nevertheless, it should be quantified. RESULTS: We retrospectively analysed seminal plasma HIV-1 shedding by 362 treated HIV-infected men attending a medically assisted reproduction centre (1998-2013) in order to determine its frequency, the impact of the antiretroviral regimen on HIV shedding, and to identify shedding patterns...
2017: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/28894282/idiopathic-male-infertility-and-polymorphisms-in-the-dna-methyltransferase-genes-involved-in-epigenetic-marking
#6
Qiuqin Tang, Yiqiu Chen, Wei Wu, Hongjuan Ding, Yankai Xia, Daozhen Chen, Xinru Wang
The purpose of this study was to investigate the association between male infertility and single-nucleotide polymorphisms (SNPs) of DNA methyltransferases (DNMT) genes (DNMT3B: rs2424909, DNMT1: rs4804490, DNMT3A: rs1550117 and DNMT3L: rs7354779). Eight hundred and thirty three idiopathic infertile males and four hundred and ten fertile controls from the hospitals affiliated to Nanjing Medical University between 2010 and 2012 were recruited in the study. We demonstrated a significantly increased risk of idiopathic infertility with abnormal semen parameters in association with the heterozygous genotype of variant rs4804490...
September 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28894123/mutations-in-the-prostate-specific-antigen-psa-klk3-correlate-with-male-infertility
#7
Nishi Gupta, Digumarthi V S Sudhakar, Pravin Kumar Gangwar, Satya Narayan Sankhwar, Nalini J Gupta, Baidyanath Chakraborty, Kumarasamy Thangaraj, Gopal Gupta, Singh Rajender
Prostate specific antigen (PSA/KLK3) is known to be the chief executor of the fragmentation of semenogelins, dissolution of semen coagulum, thereby releasing sperm for active motility. Recent research has found that semenogelins also play significant roles in sperm fertility by affecting hyaluronidase activity, capacitation and motility, thereby making PSA important for sperm fertility beyond simple semen liquefaction. PSA level in semen has been shown to correlate with sperm motility, suggesting that PSA level/activity can affect fertility...
September 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28893621/rare-genetic-variants-in-the-sodium-dependent-organic-anion-transporter-soat-slc10a6-effects-on-transport-function-and-membrane-expression
#8
Josefine Bennien, Thomas Fischer, Joachim Geyer
Sulfo-conjugated steroid hormones, such as dehydroepiandrosterone sulfate (DHEAS), pregnenolone sulfate or estrone-3-sulfate are abundant in the body, but are biologically inactive at classical androgen and estrogen steroid receptors. However, after carrier-mediated import and de-conjugation by the steroid sulfatase, these compounds participate in the overall steroid regulation of reproductive organs. The sodium-dependent organic anion transporter SOAT, coded by the SLC10A6 gene, is specific for the transport of steroid sulfates and is highly expressed in testicular germ cells, including pachytene spermatocytes, secondary spermatocytes, and round spermatids...
September 8, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28892486/misattribution-of-musical-arousal-increases-sexual-attraction-towards-opposite-sex-faces-in-females
#9
Manuela M Marin, Raphaela Schober, Bruno Gingras, Helmut Leder
Several theories about the origins of music have emphasized its biological and social functions, including in courtship. Music may act as a courtship display due to its capacity to vary in complexity and emotional content. Support for music's reproductive function comes from the recent finding that only women in the fertile phase of the reproductive cycle prefer composers of complex melodies to composers of simple ones as short-term sexual partners, which is also in line with the ovulatory shift hypothesis...
2017: PloS One
https://www.readbyqxmd.com/read/28891798/-effect-of-the-cellular-and-humoral-immune-response-in-infertile-couples-and-its-relationship-with-infections
#10
Adriana Brufman, Laura Colombo, Esteban Streiger, Rocío Pusillico
OBJECTIVE: The purpose of this study was to determine the prevalence of different microorganisms isolated from the urogenital tract of infertile men and assess whether there are differences in semen parameters according to the presence or absence of genital infections. METHODS: 280 semen samples from infertile men were studied retrospectively. Semen parameters were analyzed according to the World Health Organization criteria (WHO 2010). Microbiological analysis was performed using the modified method of Stamey and Meares proposed by Santoianni et al...
September 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28891355/fertility-challenges-for-women-with-sickle-cell-disease
#11
Djamila L Ghafuri, Sarah-Jo Stimpson, Melissa E Day, Andra James, Michael R DeBaun, Deva Sharma
Sickle cell disease (SCD) represents one of the most common monogenic blood disorders worldwide, with an incidence of over 300,000 newborns affected per year. Reproductive challenges for men and women with SCD have been previously reviewed; however, evidence-based strategies to prevent and manage infertility and increase fecundity are lacking in women with SCD, which is one of the most important factors for quality of life. Areas covered: This review article summarizes the known risk factors for infertility, low fecundity, and premature menopause related to SCD...
September 11, 2017: Expert Review of Hematology
https://www.readbyqxmd.com/read/28888863/increased-insulin-resistance-in-men-with-unexplained-infertility
#12
Ragaa Mansour, Yahia El-Faissal, Ahmed Kamel, Omnia Kamal, Gamal Aboulserour, Mohamed Aboulghar, Ibrahim Fahmy
This prospective case-control study aimed to test the presence of insulin resistance (IR) in men with unexplained infertility. We included two groups: the study group including 160 infertile men with unexplained oligozoospermia (sperm count <10 × 10(6)/ml) and normal hormonal profile, and the control group of 79 men with proven fertility within the preceding year. A fasting blood test measured IR, FSH, LH, total cholesterol, low-density lipoprotein, high-density lipoprotein and triglycerides. Insulin level was significantly higher in the study group (13...
August 24, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28886318/new-insights-into-the-expression-profile-of-microrna-34c-and-p53-in-infertile-men-spermatozoa-and-testicular-tissue
#13
S Rahbar, M G Novin, E Alizadeh, V Shahnazi, F Pashaei-Asl, Y A AsrBadr, L Farzadi, E Ebrahimie, M Pashaiasl
Spermatogenesis is proliferation and differentiation processes of stem spermatogonia into mature spermatozoa controlled by the genes responsible for transcription and post transcription levels. MicroRNAs (miRNA) are  the key factors during gene expression in RNA silencing and post-transcriptional regulation. They play main roles in regulation of early and late spermatogenesis, and reproduction. In this study, we investigate the role of miRNAs in infertile males.The patients were assigned to five groups based on semen analysis (n=55), including normozoospermic (N), moderate oligoasthenoteratozoospermic (MOAT), severe oligoasthenoteratozoospermic (SOAT), obstructive azoospermia (OA) and non-obstructive azoospermia (NOA)...
August 30, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/28883919/a-case-of-klinefelter-syndrome-with-hypersexual-desire
#14
Kingsley Okolie, Sumathy Perampalam, Anthony Barker, Christopher J Nolan
Klinefelter syndrome (KS) is a chromosomal disorder affecting males, with the typical karyotype of 47,XXY due to a supernumerary X chromosome, which causes progressive testicular failure resulting in androgen deficiency and infertility. Despite it being the most common sex chromosomal disorder, its diagnosis is easily missed. In addition to its classical clinical features of tall stature, gynaecomastia, small testes, and symptoms and signs of hypogonadism including infertility, KS is also often associated with neurocognitive, behavioural and psychiatric disorders...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28881787/mitochondrial-dna-sequencing-and-large-scale-genotyping-identifies-mt-nd4-gene-mutation-m-11696g-a-associated-with-idiopathic-oligoasthenospermia
#15
Juan Ji, Miaofei Xu, Zhenyao Huang, Lei Li, Hongxiang Zheng, Shuping Yang, Shilin Li, Li Jin, Xiufeng Ling, Yankai Xia, Chuncheng Lu, Xinru Wang
Genetic variants of mitochondrial DNA (mtDNA) were implicated to be associated with male infertility. Our previous whole mitochondrial genome sequencing and association study has identified two susceptibility mtDNA variants for oligoasthenospermia in Han Chinese men. In this study, we tested promising associations in an extended validation using 670 idiopathic oligoasthenospermia cases and 793 healthy controls to identify additional risk variants. We found that the genetic variant of m.11696G>A showed significantly higher frequency in the case group than that in the control group (odds ratio (OR) 2...
August 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28879865/proton-pump-inhibitor-use-does-not-affect-semen-quality-in-subfertile-men
#16
Sorena Keihani, James R Craig, Chong Zhang, Angela P Presson, Jeremy B Myers, William O Brant, Kenneth I Aston, Benjamin R Emery, Timothy G Jenkins, Douglas T Carrell, James M Hotaling
Proton-pump inhibitors (PPIs) are among the most widely used drugs worldwide. PPI use has recently been linked to adverse changes in semen quality in healthy men; however, the effects of PPI use on semen parameters remain largely unknown specifically in cases with male factor infertility. We examined whether PPI use was associated with detrimental effects on semen parameters in a large population of subfertile men. We retrospectively reviewed data from 12 257 subfertile men who had visited our fertility clinic from 2003 to 2013...
September 5, 2017: Asian Journal of Andrology
https://www.readbyqxmd.com/read/28877046/quantitative-proton-spectroscopy-of-the-testes-at-3-t-toward-a-noninvasive-biomarker-of-spermatogenesis
#17
Pippa Storey, Oded Gonen, Andrew B Rosenkrantz, Kiranpreet K Khurana, Tiejun Zhao, Rajesh Bhatta, Joseph P Alukal
OBJECTIVES: The aim of this study was to compare testicular metabolite concentrations between fertile control subjects and infertile men. MATERIALS AND METHODS: Single voxel proton magnetic resonance spectroscopy (¹H-MRS) was performed in the testes with and without water suppression at 3 T in 9 fertile control subjects and 9 infertile patients (8 with azoospermia and 1 with oligospermia). In controls only, the T1 and T2 values of water and metabolites were also measured...
September 5, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28865553/motivations-and-attitudes-of-candidate-sperm-donors-in-belgium
#18
Annelies Thijssen, Veerle Provoost, Eva Vandormael, Nathalie Dhont, Guido Pennings, Willem Ombelet
OBJECTIVE: To study the motivation and attitudes of a candidate sperm donor population in Belgium. DESIGN: Anonymous survey. SETTING: Tertiary referral infertility center. PATIENT(S): One hundred candidate sperm donors applying to the center for a first semen analysis between April 2013 and March 2016. INTERVENTION(S): Invitation to complete an anonymous questionnaire. MAIN OUTCOME MEASURE(S): Demographic characteristics, recruitment methods, motivations and attitudes toward payment, donor anonymity, disclosure to offspring, donation to lesbian couples and single women, views on the donor children and social aspects of sperm donation...
September 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28865546/reproductive-outcomes-of-testicular-versus-ejaculated-sperm-for-intracytoplasmic-sperm-injection-among-men-with-high-levels-of-dna-fragmentation-in-semen-systematic-review-and-meta-analysis
#19
Sandro C Esteves, Matheus Roque, Cara K Bradley, Nicolás Garrido
OBJECTIVE: To compare sperm DNA fragmentation (SDF) levels between testicular and ejaculated sperm and to evaluate outcomes of intracytoplasmic sperm injection (ICSI) with the use of testicular (Testi-ICSI) versus ejaculated (Ejac-ICSI) sperm in nonazoospermic men with high SDF. DESIGN: Systematic review and meta-analysis. SETTING: Not applicable. PATIENT(S): Normo- and oligozoospermic men with high levels of SDF in semen subjected to Testi-ICSI or Ejac-ICSI...
September 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28865536/varicocelectomy-before-assisted-reproductive-technology-are-outcomes-improved
#20
REVIEW
Taylor P Kohn, Jaden R Kohn, Alexander W Pastuszak
Clinical varicoceles have been associated with impaired semen parameters and male-factor infertility. Varicocele repair can improve live birth rates for men with clinical varicocele. Varicocelectomy is often combined with assisted reproductive techniques (ART) such as intrauterine insemination (IUI), in vitro fertilization (IVF), or intracytoplasmic sperm injection (ICSI). Here we review the literature examining varicocelectomy before ART to evaluate whether improved pregnancy outcomes are realized. Although insufficient evidence exists to determine if correcting a varicocele improves IUI outcomes, a clinical benefit is observed when correcting a clinical varicocele in oligospermic and nonobstructed azoospermic men before IVF/ICSI...
September 2017: Fertility and Sterility
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