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Evaluation of male infertility

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https://www.readbyqxmd.com/read/29343909/decline-in-semen-parameters-from-2000-to-2016-among-bangladeshi-men-attending-a-tertiary-care-hospital
#1
Nusrat Mahmud, Eshita Sharmin, Md Arif Mamun, Zayan Shamayeen, Natalie Rivadeneira, Roger Rochat, Akanksha Mehta
Introduction: The objective of this study was to analyze longitudinal changes in sperm parameters of Bangladeshi men. We hypothesized that semen parameters declined for this population. Methods: We retrospectively analyzed semen data from men aged 18-64 years who sought care for general sperm quality or updates on fertility status at an infertility clinic in Dhaka, Bangladesh, from January 2000 to June 2016 (n = 13,953). Samples with incomplete data were excluded (n = 143)...
January 2018: Indian Journal of Urology: IJU: Journal of the Urological Society of India
https://www.readbyqxmd.com/read/29343824/human-papillomavirus-prophylactic-vaccination-improves-reproductive-outcome-in-infertile-patients-with-hpv-semen-infection-a-retrospective-study
#2
Andrea Garolla, Luca De Toni, Alberto Bottacin, Umberto Valente, Maurizio De Rocco Ponce, Andrea Di Nisio, Carlo Foresta
In this study we aimed to evaluate the effect on reproductive outcome of HPV vaccination in male subjects of infertile couples with HPV semen infection. In this single-center study, we retrospectively enrolled 151 infertile couples with detection of HPV in semen, attending our Hospital Unit of Andrology between January 2013 and June 2015, counseled to receive adjuvant HPV vaccination. Seventy-nine accepted vaccination (vaccine group) whilst 72 did not (control group). Our protocol of follow-up, aimed to evaluate HPV viral clearance, consisted in semen analysis, INNO-LiPA and FISH for HPV in semen cells after 6 and 12 months from basal evaluation...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29336995/a-search-for-molecular-mechanisms-underlying-male-idiopathic-infertility
#3
REVIEW
An Bracke, Kris Peeters, Usha Punjabi, David Hoogewijs, Sylvia Dewilde
Infertility affects approximately 15% of the couples wanting to conceive. In 30 - 40% of the cases the aetiology of male infertility remains unknown and is called idiopathic male infertility. When assisted reproductive technologies are used to obtain pregnancy, an adequate (epi)genetic diagnosis of male infertility is of major importance to evaluate if a genetic abnormality will be transmitted to the offspring. In addition, there is need for better diagnostic seminal biomarkers to assess the success rates of these assisted reproductive technologies...
December 27, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/29334202/lifestyle-related-factors-associated-with-reproductive-health-in-couples-seeking-fertility-treatments-results-of-a-pilot-study
#4
Marie-Lou Piché, Véronique Babineau, Julie Robitaille, Émilie Lachance, Stephanie-May Ruchat
Background: The objective of this pilot study was to evaluate the feasibility of conducting a larger prospective cohort study, which will aim at determining the independent contribution of male and female lifestyle-related factors to assisted reproductive technology (ART) success. The study also examined whether couples seeking fertility treatments present lifestyle-related factors that may interfere with their reproductive health. MATERIALS AND METHODS: This prospective pilot study was conducted in a fertility clinic between May 2015 and February 2016...
April 2018: International Journal of Fertility & Sterility
https://www.readbyqxmd.com/read/29320903/air-pollution-and-human-sperm-sex-ratio
#5
Michał Radwan, Emila Dziewirska, Paweł Radwan, Lucjusz Jakubowski, Wojciech Hanke, Joanna Jurewicz
The present study was designed to address the hypothesis that exposure to specific air pollutants may impact human sperm Y:X chromosome ratio. The study population consisted of 195 men who were attending an infertility clinic for diagnostic purposes and who had normal semen concentration of 15-300 mln/ml (WHO, 2010). Participants represented a subset of men in a multicenter parent study conducted in Poland to evaluate environmental factors and male fertility. Participants were interviewed and provided a semen sample...
January 1, 2018: American Journal of Men's Health
https://www.readbyqxmd.com/read/29304462/semen-specific-mirnas-suitable-for-the-distinction-of-infertile-semen-in-the-body-fluid-identification
#6
Huan Tian, Meili Lv, Zhilong Li, Duo Peng, Yu Tan, Hui Wang, Qingqing Li, Fuping Li, Weibo Liang
Non-protein coding RNA, miRNAs (microRNAs), are a class of promising molecular biomarkers for forensic body fluid identification (BFI) as their small size and tissue-specific expression manners. A number of studies have shown that semen can be distinguished from forensic-related body fluids (such as menstrual blood, venous blood, vaginal fluid, saliva, etc.) using semen-specific miRNAs through microassay screening and RT-qRCR. Infertility is becoming a global health problem, affecting 10%-15% of couples worldwide, and half of the cases are the result of male factors (Lian et al...
December 19, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/29304248/viable-acrosome-intact-human-spermatozoa-in-the-ejaculate-as-a-marker-of-semen-quality-and-fertility-status
#7
Dorte Louise Egeberg Palme, Anders Rehfeld, Anne Kirstine Bang, Kristiana Alexandrova Nikolova, Søren Kjærulff, Morten Rønn Petersen, Janni Vikkelsø Jeppesen, Martin Glensbjerg, Anders Juul, Niels E Skakkebæk, Søren Ziebe, Niels Jørgensen, Kristian Almstrup
STUDY QUESTION: Is it possible, in an unbiased and clinical relevant way, to determine the number of viable acrosome-intact human spermatozoa in ejaculates and to use this as a measure of fertility chances? SUMMARY ANSWER: Image cytometry enables easy and unbiased quantification of viable acrosome-intact spermatozoa and it correlates with semen quality and fertility status. WHAT IS KNOWN ALREADY: The presence of the acrosome and its ability to respond to physiological inducers (e...
January 2, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29291410/effect-of-frozen-thawed-embryo-transfer-on-birthweight-macrosomia-and-low-birthweight-rates-in-us-singleton-infants
#8
Julia F Litzky, Sheree L Boulet, Navid Esfandiari, Yujia Zhang, Dmitry M Kissin, Regan N Theiler, Carmen J Marsit
BACKGROUND: Singleton infants conceived using assisted reproductive technology have lower average birthweights than naturally-conceived infants and are more likely to be born low birthweight (<2500 grams). Lower birthweights are associated with increased infant and child mortality and poor adult health outcomes, including cardiovascular disease, hypertension, and diabetes. Data from registry and single center studies suggest that frozen/thawed embryo transfer may be associated with larger birthweights...
December 29, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29291372/design-synthesis-in-vitro-and-in-vivo-evaluation-of-ouabain-analogs-as-potent-and-selective-na-k-atpase-%C3%AE-4-isoform-inhibitors-for-male-contraception
#9
Shameem Sultana Syeda, Gladis Sánchez, Kwon Ho Hong, Jon E Hawkinson, Gunda I Georg, Gustavo Blanco
Na,K-ATPase α4 is a testis specific plasma membrane Na+ and K+ transporter expressed in the sperm flagellum. Deletion of Na,K-ATPase α4 in male mice results in complete infertility, making it an attractive target for male contraception. Na,K-ATPase α4 is characterized by high affinity for the cardiac glycoside ouabain. With the goal of discovering selective inhibitors of the Na,K-ATPase α4 and of sperm function, ouabain derivatives were modified at the glycone (C3) and the lactone (C17) domains. Ouabagenin analog 25, carrying a benzyltriazole moiety at C17, is a picomolar inhibitor of Na,K-ATPase α4, with an outstanding α4 isoform selectivity profile...
January 1, 2018: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29287977/effects-of-herpes-simplex-virus-infections-on-seminal-parameters-in-male-partners-of-infertile-couples
#10
Fábio A Kurscheidt, Edilson Damke, Jaqueline C Bento, Valério A Balani, Karen I Takeda, Sérgio Piva, João P Piva, Mary M T Irie, Fabrícia Gimenes, Marcia E L Consolaro
OBJECTIVE: To assess the possibility that HSV infection could affect seminal parameters we (1) standardize and validate a multiplex polymerase chain reaction (M-PCR) assay to detect HSV-1 and HSV-2 in semen; (2) determine the prevalence of HSV-1/-2 in the semen of randomized male partners of couples seeking fertility evaluation. MATERIALS AND METHODS: A total of 279 semen samples were included in the study from males who visited the Sperm Analysis Section of São Camilo Laboratory of Maringá/Brazil between November 2014 and July 2015...
December 26, 2017: Urology
https://www.readbyqxmd.com/read/29286006/altered-piwi-like-1-and-piwi-like-2-mrna-expression-in-ejaculated-spermatozoa-of-men-with-impaired-sperm-characteristics
#11
Maria Giebler, Thomas Greither, Lisa Müller, Carina Mösinger, Hermann M Behre
In about half the cases of involuntary childlessness, a male infertility factor is involved. The PIWI-LIKE genes, a subclade of the Argonaute protein family, are involved in RNA silencing and transposon control in the germline. Knockout of murine Piwi-like 1 and 2 homologs results in complete infertility in males. The aim of this study was to analyze whether the mRNA expression of human PIWI-LIKE 1-4 genes is altered in ejaculated spermatozoa of men with impaired sperm characteristics. Ninety male participants were included in the study, among which 47 were with normozoospermia, 36 with impaired semen characteristics according to the World Health Organization (WHO) manual, 5th edition, and 7 with azoospermia serving as negative control for the PIWI-LIKE 1-4 mRNA expression in somatic cells in the ejaculate...
December 26, 2017: Asian Journal of Andrology
https://www.readbyqxmd.com/read/29282417/association-of-blood-and-seminal-plasma-cadmium-and-lead-levels-with-semen-quality-in-non-occupationally-exposed-infertile-men-in-abakaliki-south-east-nigeria
#12
Ademola C Famurewa, Emmanuel I Ugwuja
Objective: To evaluate association of blood and seminal plasma lead and cadmium with sperm quality of non-occupationally exposed male partners of couples with infertility. Materials and methods: A cross-sectional study was conducted on 75 men aged 20-45 years (mean = 37.1 ± 7.0 yrs.) with infertility recruited from the Fertility Clinic of a hospital in Abakaliki. Sperm count done in accordance with the WHO guidelines was used to classify the participants as normospamia, oligospermia and azospermia. Atomic absorption spectrophotometer was used to determine lead and cadmium levels in plasma from blood and semen...
June 2017: Journal of Family & Reproductive Health
https://www.readbyqxmd.com/read/29277349/diabetes-mellitus-induction-effect-of-different-streptozotocin-doses-on-male-reproductive-parameters
#13
Temidayo S Omolaoye, Bongekile T Skosana, Stefan S du Plessis
Diabetes mellitus (DM) is reported to be involved in male reproductive impairment, and its impact is evident in the increased prevalence of infertility. Various studies have reported that a single parenteral injection of <40 mg/kg Streptozotocin (STZ) is ineffective in ablating pancreatic β-cells and creating a rat model to investigate the effect of DM on the male reproductive system. This study therefore aims to validate these claims. Adult male Wistar rats received either a single intraperitoneal injection of STZ (30 mg/kg or 60 mg/kg) or saline (0...
December 22, 2017: Acta Histochemica
https://www.readbyqxmd.com/read/29277131/direct-comparison-of-vasectomized-males-and-genetically-sterile-gapdhs-knockout-males-for-the-induction-of-pseudopregnancy-in-mice
#14
Wiebke Garrels, Dirk Wedekind, Isabell Wittur, Ulrike Freischmidt, Dirk Korthaus, Thomas Rülicke, Martina Dorsch
The laboratory mouse is the most used animal model in biomedical research. Several artificial reproductive techniques, such as revitalization of cryopreserved strains, rederivation after hygienic contaminations and the production of transgenic mouse models, require the transfer of preimplantation embryos to surrogate mothers. Pseudopregnancy is essential in recipient females and is induced by mating with sterile males. Commonly, surgically vasectomized males are used for this purpose. As an alternative, genetically modified mouse strains have been identified, in which homozygous infertile males are sexually active...
January 1, 2017: Laboratory Animals
https://www.readbyqxmd.com/read/29277047/association-of-the-common-snps-in-rnf212-stag3-and-rfx2-gene-with-male-infertility-with-azoospermia-in-chinese-population
#15
Cheng-He Yu, Ting Xie, Ruo-Peng Zhang, Zhou-Cun A
OBJECTIVE: The aim of this study was to explore the association between the SNP rs4045481 in RNF212 gene, rs1050482 and rs11531577 in STAG3 gene as well as rs2288846 in RFX2 gene and male infertility with azoospermia in Chinese population. STUDY DESIGN: Two hundreds and twenty infertile patients with azoospermia and 248 fertile men were recruited in the present study. The four SNPs investigated were genotyped using polymerase chain reaction and restriction fragment length polymorphism assay...
December 15, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/29275592/-the-effect-of-follicular-fluid-from-patients-with-endometriosis-follicle-stimulating-hormone-and-bone-morphogenetic-protein-15-on-the-proliferation-and-progesterone-secretion-of-granular-cells
#16
X F Wang, X N Lin, Y D Dai, X Lin, H M Lü, F Zhou, S Y Zhang
Objective: The study was designed to evaluate the effect of follicular fluid from patients with endometriosis, follicle stimulating hormone (FSH), bone morphogenetic protein 15 (BMP-15) on the proliferation and progesterone secretion of human luteinized granular cells in vitro. Methods: Cumulus granulosa cells were collected from the patients who underwent in vitro fertilization and embryo transfer (IVF-ET) ovulation due to tubal or male factor infertility on the day of the retrieval. The cells in the control group were cultured with complete medium of DMEM/F-12, an extra of FSH at a dose of 12 μg/L was added in the FSH group, an extra of BMP-15 at a dose of 6 μg/L was added to the BMP-15 group, an extra of 5% of the follicular fluid from the patients with tubal or male factor infertility was added to the tubal group, an extra of 5% of the follicular fluid from the patients with endometriosis infertility was added to the endometriosis group, an extra of 5% of the follicular fluid from the patients with endometriosis infertility plus FSH at a dose of 12 μg/L were added to the endometriosis plus FSH group, and an extra of 5% of the follicular fluid from the patients with endometriosis infertility plus BMP-15 at a dose of 6 μg/L were added to the endometriosis plus BMP-15 group...
December 5, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29261340/role-of-tribulus-terrestris-in-male-infertility-is-it-real-or-fiction
#17
Sameh Fayek GamalEl Din
Tribulus terrestris is an annual herb of the Zygophyllaceae family and is commonly known as Gokshur, Gokharu, or puncturevine. Flavonoids, alkaloids, saponins, lignin, amides, and glycosides are the main active phytoconstituents of this plant. Infertility is defined by the failure to conceive a child after one year or more of regular unprotected sexual intercourse. Infertility affects society at large and has a negative impact on the social and emotional aspects of the patient. This in-depth review presents several studies that evaluate the role of Tribulus terrestris in a chronological order to help us better understand the exact mechanism by which this herbal medicine acts in male infertility...
December 20, 2017: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/29243795/the-effect-on-clinical-results-of-adding-recombinant-lh-in-late-phase-of-ovarian-stimulation-of-patients-with-repeated-implantation-failure-a-pilot-study
#18
A Rahman, D Francomano, F Sagnella, F Lisi, C Manna
OBJECTIVE: To evaluate the efficacy of recombinant LH (r-LH) addition in the late phase of ovarian stimulation in patients with repeated implantation failure (RIF). PATIENTS AND METHODS: 66 infertile couples undergoing ICSI treatment due to male factor were allocated to group A (33) and to group B (33). Group A (29 subjects) received recombinant FSH (r-FSH) supplemented by r-LH in the late follicular phase starting the same day of GnRH-antagonist (GnRH-ant) administration, and group B (32 subjects) received r-FSH alone...
December 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29241080/paternal-urinary-concentrations-of-organophosphate-flame-retardant-metabolites-fertility-measures-and-pregnancy-outcomes-among-couples-undergoing-in-vitro-fertilization
#19
Courtney C Carignan, Lidia Mínguez-Alarcón, Paige L Williams, John D Meeker, Heather M Stapleton, Craig M Butt, Thomas L Toth, Jennifer B Ford, Russ Hauser
BACKGROUND: Use of organophosphate flame retardants (PFRs) has increased over the past decade following the phase out of some brominated flame retardants, leading to increased human exposure. We recently reported that increasing maternal PFR exposure is associated with poorer pregnancy outcomes among women from a fertility clinic. Because a small epidemiologic study previously reported an inverse association between male PFR exposures and sperm motility, we sought to examine associations of paternal urinary concentrations of PFR metabolites and their partner's pregnancy outcomes...
December 11, 2017: Environment International
https://www.readbyqxmd.com/read/29237379/male-urogen%C3%A4-tal-d%C3%A4-sorders-and-metabol%C3%A4-c-syndrome-poss%C3%A4-ble-l%C3%A4-nks-character%C3%A4-st%C3%A4-cs-and-potent%C3%A4-al-treatment-strateg%C3%A4-es
#20
Cetin Volkan Oztekin, Ecem Kaya, Didem Yilmaz-Oral, Serap Gur
BACKGROUND: Metabolic syndrome (MetS), as a cluster of metabolic derangements which is major risk factors for vascular disease, is one of the most important threats to public health. Although the epidemiological and limited amount of basic science and clinical evidence link MetS to several male urogenital disorders, a holistic approach aiming to define common mechanistic pathways and new possible therapeutic targets are lacking. OBJECTIVE: The current review has focused on providing scientific evidence on the role of MetS and its components on male urogenital disorders and the definition of new therapeutic targets...
December 12, 2017: Current Pharmaceutical Design
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