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Evaluation of male infertility

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https://www.readbyqxmd.com/read/28315349/diethylstilbestrol-induces-oxidative-dna-damage-resulting-in-apoptosis-of-spermatogonial-stem-cells-in-vitro
#1
Khaled Habas, Martin H Brinkworth, Diana Anderson
The spermatogonial stem cells (SSCs) are the only germline stem cells in adults that are responsible for the transmission of genetic information from mammals to the next generation. SSCs play a very important role in the maintenance of progression of spermatogenesis and help provide an understanding of the reproductive biology of future gametes and a strategy for diagnosis and treatment of infertility and male reproductive toxicity. Androgens/oestrogens are very important for the suitable maintenance of male germ cells...
March 14, 2017: Toxicology
https://www.readbyqxmd.com/read/28306342/nmr-based-plasma-metabolomic-discrimination-for-male-fertility-assessment-of-rats-treated-with-eurycoma-longifolia-extracts
#2
Forough Ebrahimi, Baharudin Ibrahim, Chin-Hoe Teh, Vikneswaran Murugaiyah, Kit-Lam Chan
Male infertility is one of the leading causes of infertility which affects many couples worldwide. Semen analysis is a routine examination of male fertility status which is usually performed on semen samples obtained through masturbation that may be inconvenient to patients. Eurycoma longifolia (Tongkat Ali, TA), native to Malaysia, has been traditionally used as a remedy to boost male fertility. In our recent studies in rats, upon the administration of high-quassinoid content extracts of TA including TA water (TAW), quassinoid-rich TA (TAQR) extracts, and a low-quassinoid content extract including quassinoid-poor TA (TAQP) extract, sperm count (SC) increased in TAW- and TAQR-treated rats when compared to the TAQP-treated and control groups...
March 17, 2017: Systems Biology in Reproductive Medicine
https://www.readbyqxmd.com/read/28298963/potential-role-of-imaging-in-assessing-harmful-effects-on-spermatogenesis-in-adult-testes-with-varicocele
#3
REVIEW
Athina C Tsili, Olga N Xiropotamou, Anastasios Sylakos, Vasilios Maliakas, Nikolaos Sofikitis, Maria I Argyropoulou
Varicocele is characterized by an abnormal dilatation and retrograde blood flow in the spermatic veins. Varicocele is the leading correctable cause of male infertility. Although it is highly prevalent in infertile men, it is also observed in individuals with normal fertility. Determining which men are negatively affected by varicocele would enable clinicians to better select those men who will benefit from treatment. To assess the functional status of the testes in men with varicocele, color Doppler sonographic parameters were evaluated...
February 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28296202/dna-methylation-imprinting-errors-in-spermatogenic-cells-from-maturation-arrest-azoospermic-patients
#4
P I Marques, S Fernandes, F Carvalho, A Barros, M Sousa, C J Marques
Imprinting errors have been described in spermatozoa from infertile patients with oligozoospermia and azoospermia. However, little is known about methylation of imprinted genes in other spermatogenic cells from azoospermic patients. Therefore, we aimed to evaluate the methylation status of single CpGs located in the differentially methylated regions (DMRs) of two imprinted genes, one paternally (H19) and one maternally (MEST) methylated, in primary spermatocytes of azoospermic patients presenting complete (MAc, n = 7) and incomplete (MAi, n = 8) maturation arrest, as well as in other spermatogenic cells from MAi patients that presented focus of complete spermatogenesis in some seminiferous tubules...
March 10, 2017: Andrology
https://www.readbyqxmd.com/read/28289609/the-regenerative-effect-of-bone-marrow-derived-stem-cells-in-spermatogenesis-of-infertile-hamster
#5
Akbar Vahdati, Alireza Fathi, Mehrdokht Hajihoseini, Ghaem Aliborzi, Ebrahim Hosseini
BACKGROUND: Infertility is a serious social problem in advanced nations, with male factor in half of all cases of infertility. This study was conducted to determine the regenerative effect of bone marrow-derived stem cells in spermatogenesis of infertile hamster. METHODS: Twelve adult male hamsters were equally divided into azoospermic and control groups. Busulfan was intraperitoneally used for induction of azoospermia, while the right testis was treated with bone marrow-derived stem cells (10(6) BM-SCs), labeled with sterile trypan blue, 35 days after busulfan injection...
January 2017: World Journal of Plastic Surgery
https://www.readbyqxmd.com/read/28280794/the-putative-effects-of-d-aspartic-acid-on-blood-testosterone-levels-a-systematic-review
#6
REVIEW
Farzad Roshanzamir, Seyyed Morteza Safavi
BACKGROUND: D-Aspartic acid (D-Asp) is in invertebrate and vertebrate neuroendocrine tissues, where it carries out important physiological functions. Recently, it has been reported that D-Asp is involved in the synthesis and release of testosterone and is assumed can be used as a testosterone booster for infertile men, and by athletes to increase muscle mass and strength. OBJECTIVE: The aim of this review is to summarize available evidence related to the effects of D-Asp on serum testosterone levels...
January 2017: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/28270024/human-mthfr-g1793a-transition-may-be-a-protective-mutation-against-male-infertility-a-genetic-association-study-and-in-silico-analysis
#7
Mohammad Karimian, Abasalt Hosseinzadeh Colagar
In this paper, we evaluate the association of the human methylenetetrahydrofolate reductase (MTHFR)-G1793A transition with male infertility using a case-control study, a meta-analysis and an in silico analysis. In the case-control study, 308 blood samples (169 infertile and 139 fertile men) were collected. MTHFR-G1793A genotyping was performed by PCR-RFLP. The study revealed a significant protective association between the GA genotype (OR: 0.3737, 95%CI: 0.1874-0.7452, p = 0.0052) and A allele (OR: 0.4266, 95%CI: 0...
March 7, 2017: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/28261845/stenotrophomonas-maltophilia-isolated-from-prostatic-fluid-as-an-infertility-factor-in-a-male-dog
#8
A Domosławska, S Zduńczyk, A Jurczak, T Janowski
The aim of this case was to describe very rare infection of canine prostate gland with Stenotrophomonas maltophilia which had influence on male fertility. The bacterium was cultured from third fraction of the ejaculate collected by manual manipulation. The sperm concentration and motility parameters were evaluated by Hamilton-Thorne Sperm Analyser, version IVOS 12.3, sperm morphology by Diff-Quick staining and live/dead spermatozoa by eosin/nigrosin staining. After 3 weeks of treatment with targeted antibiotic, ciprofloxacin, there was no bacterial growth in prostate fluid...
March 6, 2017: Andrologia
https://www.readbyqxmd.com/read/28261842/sperm-rna-preparation-for-transcriptomic-analysis-review-of-the-techniques-and-personal-experience
#9
S El Fekih, M-H Nguyen, A Perrin, D Beauvillard, F Morel, A Saad, H Ben Ali, M De Braekeleer
In the last 10 years, several approaches, including microarrays, have been applied to investigate sperm transcript levels. However, success using microarray profiling is highly dependent of the quality of the RNA obtained. Therefore, the development of methods that deliver highly purified and intact RNA is of utmost importance. The three steps used to achieve this goal, purification of spermatozoa, RNA extraction and evaluation of RNA quality, are reviewed. Following that review and preliminary experiments, we processed sperm samples from seven normozoospermic men with a combination of gradient centrifugation and somatic cell lysis...
March 6, 2017: Andrologia
https://www.readbyqxmd.com/read/28248055/-sperm-dna-fragmentation-association-with-semen-parameters-in-young-men
#10
L V Osadchuk, D A Tataru, N N Kuznetsova, M A Kleshev, E V Markova, A V Svetlakov
AIM: Abnormal sperm DNA integrity is an important risk factor for male infertility. The aim of this work was to examine sperm DNA fragmentation in a cohort of young male volunteers (n=111; age 21.0+/-0.2 years) from the general population and establish the association between the level of sperm DNA fragmentation and sperm functional parameters. MATERIALS AND METHODS: Sperm DNA fragmentation index (DFI) was determined by SCSA (sperm chromatin structure assay) using flow cytometry...
December 2016: Urologii︠a︡
https://www.readbyqxmd.com/read/28248042/-comparative-effectiveness-of-marmar-technique-and-laparoscopic-clipping-of-testicular-vein-in-surgical-treatment-of-varicocele-in-athletes
#11
A S Samoylov, A G Martov, P S Kyzlasov, M V Zabelin, A A Kazhera
INTRODUCTION: Varicocele is one of the most common diseases among men and a proven cause of male infertility, which is directly proportional to its clinical prominence. The aim To evaluate the immediate and long-term outcomes of different surgical methods to treat varicocele in athletes. MATERIALS AND METHODS: A total of 165 athletes were treated for varicocele. Of them, 82 patients (group 1) underwent varicocele surgery using Marmar technique and 83 patients (group 2) were treated by laparoscopic clipping of testicular vein (endoscopic analogue of Ivanissevitch open surgery)...
December 2016: Urologii︠a︡
https://www.readbyqxmd.com/read/28244681/nandrolone-decanoate-interferes-with-testosterone-biosynthesis-altering-blood-testis-barrier-components
#12
Rosario Barone, Alessandro Pitruzzella, Antonella Marino Gammazza, Francesca Rappa, Monica Salerno, Fulvio Barone, Claudia Sangiorgi, Daniela D'Amico, Nicola Locorotondo, Francesca Di Gaudio, Luigi Cipolloni, Valentina Di Felice, Stefania Schiavone, Venerando Rapisarda, Gabriele Sani, Amos Tambo, Francesco Cappello, Emanuela Turillazzi, Cristoforo Pomara
The aim of this study was to investigate whether nandrolone decanoate (ND) use affects testosterone production and testicular morphology in a model of trained and sedentary mice. A group of mice underwent endurance training while another set led a sedentary lifestyle and were freely mobile within cages. All experimental groups were treated with either ND or peanut oil at different doses for 6 weeks. Testosterone serum levels were measured via liquid chromatography-mass spectrometry. Western blot analysis and quantitative real-time PCR were utilized to determine gene and protein expression levels of the primary enzymes implicated in testosterone biosynthesis and gene expression levels of the blood-testis barrier (BTB) components...
February 28, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28241054/manchette-acrosome-disorders-during-spermiogenesis-and-low-efficiency-of-seminiferous-tubules-in-hypercholesterolemic-rabbit-model
#13
Layla Simón, Abi K Funes, Martín A Yapur, María E Cabrillana, María A Monclus, Paola V Boarelli, Amanda E Vincenti, Tania E Saez Lancellotti, Miguel W Fornés
Hypercholesterolemia is a marker for several adult chronic diseases. Recently we demonstrated that sub/infertility is also associated to Hypercholesterolemia in rabbits. Seminal alterations included: abnormal sperm morphology, decreased sperm number and declined percentage of motile sperm, among others. In this work, our objective was to evaluate the effects of hypercholesterolemia on testicular efficiency and spermiogenesis, as the latter are directly related to sperm number and morphology respectively. Tubular efficiency was determined by comparing total number of spermatogenic cells with each cell type within the proliferation/differentiation compartments...
2017: PloS One
https://www.readbyqxmd.com/read/28235749/analysis-of-patient-narratives-in-disease-blogs-on-the-internet-an-exploratory-study-of-social-pharmacovigilance
#14
Shinichi Matsuda, Kotonari Aoki, Shiho Tomizawa, Masayoshi Sone, Riwa Tanaka, Hiroshi Kuriki, Yoichiro Takahashi
BACKGROUND: Although several reports have suggested that patient-generated data from Internet sources could be used to improve drug safety and pharmacovigilance, few studies have identified such data sources in Japan. We introduce a unique Japanese data source: tōbyōki, which translates literally as "an account of a struggle with disease." OBJECTIVE: The objective of this study was to evaluate the basic characteristics of the TOBYO database, a collection of tōbyōki blogs on the Internet, and discuss potential applications for pharmacovigilance...
February 24, 2017: JMIR Public Health and Surveillance
https://www.readbyqxmd.com/read/28222406/leydig-cell-clustering-and-reinke-crystal-distribution-in-relation-to-hormonal-function-in-adult-patients-with-testicular-dysgenesis-syndrome-tds-including-cryptorchidism
#15
Rikke R Soerensen, Trine H Johannsen, Niels E Skakkebaek, Ewa Rajpert-De Meyts
OBJECTIVE: Testicular dysgenesis syndrome (TDS) comprises testicular germ cell cancer, cryptorchidism and some cases of male infertility and hypospadias, which can be linked to impairment of intrauterine gonadal development. Among histological signs of TDS, large Leydig cell (LC) clusters (micronodules) are frequently present. This study aimed to investigate possible associations of LC micronodules with the presence of Reinke crystals and hormonal function of LCs, the latter primarily reflected by serum concentrations of luteinising hormone (LH) and testosterone, in patients with TDS...
October 2016: Hormones: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28216909/aneuploidy-screening-by-array-comparative-genomic-hybridization-improves-success-rates-of-in-vitro-fertilization-a-multicenter-indian-study
#16
Aditi Kotdawala, Deven Patel, Javier Herrero, Rajni Khajuria, Nalini Mahajan, Manish Banker
OBJECTIVE: To evaluate the usefulness of preimplantation genetic screening (PGS) using array comparative genomic hybridization (aCGH) in the Indian population. MATERIALS AND METHODS: This is a retrospective, multicenter study including 235 PGS cycles following intracytoplasmic sperm injection performed at six different infertility centers from September 2013 to June 2015. Patients were divided as per maternal age in several groups (<35, 35-36, 37-38, 39-40, and >40 years) and as per indication for undergoing PGS...
October 2016: Journal of Human Reproductive Sciences
https://www.readbyqxmd.com/read/28214572/clinical-relevance-of-oxidation-reduction-potential-in-the-evaluation-of-male-infertility
#17
Ashok Agarwal, Siew May Wang
OBJECTIVE: To evaluate (1) the relationship between oxidation-reduction potential (ORP) and abnormal sperm quality, and (2) the changes in ORP and sperm parameters over time, in search of a potential surrogate marker of poor sperm quality that may assist in the diagnosis of oxidative stress-related male infertility. MATERIALS AND METHODS: A total of 194 infertile men were included and 28 patients were identified to have repeated semen analyses and ORP measurements...
February 15, 2017: Urology
https://www.readbyqxmd.com/read/28187532/testicular-sperm-aspiration-tesa-for-infertile-couples-with-severe-or-complete-asthenozoospermia
#18
A H Al-Malki, K Alrabeeah, E Mondou, V Brochu-Lafontaine, S Phillips, A Zini
The aim of the study was to evaluate reproductive outcomes in a cohort of infertile couples with severe and complete asthenozoospermia undergoing TESA (testicular sperm aspiration) with ICSI. We conducted a retrospective study of 28 couples with complete or severe asthenozoospermia who underwent TESA between January 2010 and December 2015. We compared TESA-ICSI outcomes of these couples to ejaculate ICSI outcomes of 40 couples with severe asthenozoospermia treated during the same time period at our institution...
March 2017: Andrology
https://www.readbyqxmd.com/read/28183361/erratum-to-evaluation-of-mesenchymal-stem-cells-in-treatment-of-infertility-in-male-rats
#19
Amal I Hassan, Sally S Alam
No abstract text is available yet for this article.
February 9, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28178639/urinary-metabolites-of-polycyclic-aromatic-hydrocarbons-sperm-dna-damage-and-spermatozoa-apoptosis
#20
Pan Yang, Yi-Xin Wang, Li Sun, Ying-Jun Chen, Chong Liu, Li-Li Huang, Wen-Qing Lu, Qiang Zeng
Inconsistent results between polycyclic aromatic hydrocarbons (PAHs) exposure and adverse male reproductive health have been reported in humans. To assess whether PAH exposure is associated with declined sperm function. Ten monohydroxylated PAHs (OH-PAHs) metabolites were analyzed in repeated urine samples from an infertility clinic. We used multivariable linear models to estimate the associations of urinary OH-PAH metabolites with sperm DNA damage (n=405) and spermatozoa apoptosis (n=366). The shapes of dose-dependent associations of exposure measurements with outcomes were further evaluated by restricted cubic splines...
May 5, 2017: Journal of Hazardous Materials
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