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https://www.readbyqxmd.com/read/29673127/cstf2t-regulates-expression-of-histones-and-histone-like-proteins-in-male-germ-cells
#1
P N Grozdanov, J Li, P Yu, W Yan, C C MacDonald
Formation of the 3' ends of mature mRNAs requires recognition of the correct site within the last exon, cleavage of the nascent pre-mRNA, and, for most mRNAs, addition of a poly(A) tail. Several factors are involved in recognition of the correct 3'-end site. The cleavage stimulation factor (CstF) has three subunits, CstF-50 (gene symbol Cstf1), CstF-64 (Cstf2), and CstF-77 (Cstf3). Of these, CstF-64 is the RNA-binding subunit that interacts with the pre-mRNA downstream of the cleavage site. In male germ cells where CstF-64 is not expressed, a paralog, τCstF-64 (gene symbol Cstf2t) assumes its functions...
April 19, 2018: Andrology
https://www.readbyqxmd.com/read/29656500/mitochondria-glycogen-and-lipid-droplets-in-skeletal-muscle-during-testosterone-treatment-and-strength-training-a-randomized-double-blinded-placebo-controlled-trial
#2
R C Jensen, L L Christensen, J Nielsen, H D Schrøder, T Kvorning, K Gejl, K Højlund, D Glintborg, M Andersen
Low testosterone levels in aging men are associated with insulin resistance. Mitochondrial dysfunction, changes in glycogen metabolism, and lipid accumulation are linked to insulin resistance in skeletal muscle. In this randomized, double-blinded, placebo-controlled study, we investigated the effects of six-month testosterone replacement therapy (TRT) and strength training (ST) on mitochondrial, glycogen, and lipid droplet (LD) content in skeletal muscle of aging men with subnormal bioavailable testosterone (BioT) levels...
April 15, 2018: Andrology
https://www.readbyqxmd.com/read/29654715/virgin-coconut-oil-extract-mitigates-testicular-induced-toxicity-of-alcohol-use-in-antiretroviral-therapy
#3
O O Ogedengbe, E C S Naidu, E N Akang, U Offor, I O Onanuga, A I Peter, A I Jegede, O O Azu
The consumption of alcohol by people living with HIV/AIDS is associated with a graver prognosis. Long-term use of antiretrovirals may have certain health challenges that may be aggravated by concomitant alcohol use. This study investigated virgin coconut oil (VCO) as an adjuvant to the deleterious effects of highly active antiretroviral therapy (HAART) and alcohol on the cyto-architecture and functioning of the testis. Forty adult male Sprague-Dawley rats, weighing 165~176 g, were divided into eight groups and treated according to protocol...
April 14, 2018: Andrology
https://www.readbyqxmd.com/read/29633574/morphological-defects-sperm-dna-integrity-and-protamination-of-bovine-spermatozoa
#4
G B Boe-Hansen, M R S Fortes, N Satake
The association between sperm morphology characteristics and DNA conformation and integrity is still controversial. In bulls, major morphological sperm abnormalities have been associated with reduced fertility, and morphological assessment is used to provide an indication of potential fertility of the individual. Sperm DNA fragmentation and damage has a negative effect on embryo development and subsequently fertility, with bull spermatozoa generally displaying low levels of DNA damage and tight chromatin. However, sensitive methods for detecting chromatin damage may reveal associations with morphological defects...
April 6, 2018: Andrology
https://www.readbyqxmd.com/read/29611369/the-role-of-neutrophil-to-lymphocyte-ratio-in-men-with-erectile-dysfunction-preliminary-findings-of-a-real-life-cross-sectional-study
#5
E Ventimiglia, W Cazzaniga, F Pederzoli, N Frego, F Chierigo, P Capogrosso, L Boeri, F Dehò, C Abbate, D Moretti, L Piemonti, F Montorsi, A Salonia
The aim of this study was to investigate the role of systemic inflammation by means of the neutrophil-to-lymphocyte ratio (NLR) in men with erectile dysfunction (ED). Complete demographic, clinical, and laboratory data from 279 consecutive men with newly diagnosed ED were analyzed. Health-significant comorbidities were scored with the Charlson Comorbidity Index (CCI). A complete blood count was requested for every man, and the NLR was calculated for every individual. Patients were invited to complete the IIEF questionnaire...
April 2, 2018: Andrology
https://www.readbyqxmd.com/read/29611308/factors-impacting-couples-decision-making-between-vasectomy-reversal-versus-sperm-retrieval-in-vitro-fertilization-intracytoplasmic-sperm-injection
#6
P K Kavoussi, K M Kavoussi, K C Odenwald, S K Kavoussi
The purpose of this study was to identify factors which impact a couples' decision-making between the options of vasectomy reversal vs. sperm retrieval/in vitro fertilization/intracytoplasmic sperm injection when counseled both by a reproductive urologist and a reproductive endocrinologist. A retrospective chart review was performed of couples who wish to achieve a pregnancy with a male partner with a history of prior vasectomy, in a couples' private fertility center. Of patients presenting for fertility options with a history of vasectomy, 175 couples elected to be counseled by both a reproductive urologist and a reproductive endocrinologist on the options between vasectomy reversal and sperm retrieval/in vitro fertilization/intracytoplasmic sperm injection, with 78...
April 2, 2018: Andrology
https://www.readbyqxmd.com/read/29603682/adipose-derived-stem-cells-improve-erectile-function-partially-through-the-secretion-of-igf-1-bfgf-and-vegf-in-aged-rats
#7
J Yang, Y Zhang, G Zang, T Wang, Z Yu, S Wang, Z Tang, J Liu
Adipose-derived stem cells (ADSCs) have recently been considered as a promising therapy for erectile dysfunction (ED). However, the mechanism of ADSC-based therapy is unclear. Insulin-like growth factor-1 (IGF-1), basic fibroblast growth factor (bFGF), and vascular endothelial growth factor (VEGF) secreted by ADSCs were assessed in vitro. Sixteen 24-month-old male Sprague-Dawley rats were used for comparative analysis of 2-week treatment with labeled ADSCs or PBS. Eight additional 5-month-old rats were used as a young rat group...
March 30, 2018: Andrology
https://www.readbyqxmd.com/read/29602229/prospective-evaluation-of-hematocrit-in-gender-affirming-hormone-treatment-results-from-european-network-for-the-investigation-of-gender-incongruence
#8
J Defreyne, B Vantomme, E Van Caenegem, K Wierckx, C J M De Blok, M Klaver, N M Nota, D Van Dijk, C M Wiepjes, M Den Heijer, G T'Sjoen
In trans persons on gender-affirming hormonal treatment, a decrease (in trans women) or increase (in trans men) in hematocrit is often observed. Reference ranges for evaluation of hematocrit levels in trans persons have not been established. This prospective cohort study is part of the European Network for the Investigation of Gender Incongruence (ENIGI). At the Ghent and Amsterdam sites, we included 625 hormone-naïve trans persons. Gender-affirming hormonal treatment was initiated at the first visit. In trans men, serum hematocrit (Hct) levels increased during the first year (+4...
March 30, 2018: Andrology
https://www.readbyqxmd.com/read/29600542/a-new-2-testosterone-gel-formulation-a-comparison-with-currently-available-topical-preparations
#9
REVIEW
S Arver, C Stief, J de la Rosette, T H Jones, A Neijber, D Carrara
Testosterone gel formulations have become a popular testosterone replacement therapy in patients with hypogonadism since their advent in the year 2000. The gel formulations restore testosterone levels to mid-normal physiological levels (14-17.5 nmol/L) as early as within 24 h, and help alleviate the signs and symptoms of testosterone deficiency, thereby leading to an improved quality of life. Although testosterone gels have a favourable efficacy and safety profile as compared to injectable and patch formulations, risk of secondary exposure poses a challenge...
March 30, 2018: Andrology
https://www.readbyqxmd.com/read/29600532/sertoli-cells-for-cell-transplantation-pre-clinical-studies-and-future-perspectives
#10
REVIEW
G Luca, I Arato, G Sorci, D F Cameron, B C Hansen, T Baroni, R Donato, D G J White, R Calafiore
Sertoli cells are located in the testes where they control several key functions in spermatogenesis. Over the past 30 years, Sertoli cells have been upgraded from a simple scaffold-like structural system to a dynamic functional system of intercellular support that delivers potent immunomodulatory and trophic factors. Since the discovery of new Sertoli cell secretory products, these cells have been utilized in experimental cell transplantation and co-transplantation protocols aimed at treating both chronic inflammatory and degenerative disorders...
March 30, 2018: Andrology
https://www.readbyqxmd.com/read/29577652/preliminary-study-of-the-homologous-recombination-repair-pathway-in-mouse-spermatogonial-stem-cells
#11
W Le, L Qi, C Xu, Z Xiang, Z Mao, J Zhang, J Xu, D Wu
The present study was designed to detect DNA repair response through the homologous recombination pathway in mouse spermatogonial stem cells. Mouse spermatogonial stem cells (mSSCs) were obtained from the adult DBA/2 mouse testes by MACS sorting. mSSCs and mice animals were divided into four groups (30 min, 2, 24 h, control) and treated with ionizing irradiation while the control group received pseudo-irradiation. Proteins involved in the homologous recombination pathway (γH2AX, ATM, RAD51, CtIP, and RPA2) were assessed in mSSCs both in vitro and in vivo...
March 25, 2018: Andrology
https://www.readbyqxmd.com/read/29527831/development-of-a-selective-androgen-receptor-modulator-for-transdermal-use-in-hypogonadal-patients
#12
V Krishnan, N J Patel, J G Mackrell, S A Sweetana, H Bullock, Y L Ma, T H Waterhouse, B C Yaden, J Henck, Q Q Zeng, K Gavardinas, P Jadhav, A Saeed, P Garcia-Losada, D A Robins, C T Benson
We have identified a non-steroidal selective androgen receptor modulator (SARM), termed LY305, that is bioavailable through a transdermal route of administration while highly cleared via hepatic metabolism to limit parent compound exposure in the liver. Selection of this compound and its transdermal formulation was based on the optimization of skin absorption properties using both in vitro and in vivo skin models that supported PBPK modeling for human PK predictions. This molecule is an agonist in perineal muscle while being a weak partial agonist in the androgenic tissues such as prostate...
March 12, 2018: Andrology
https://www.readbyqxmd.com/read/29512338/impact-of-sexual-debut-on-culturable-human-seminal-microbiota
#13
R Mändar, S Türk, P Korrovits, K Ausmees, M Punab
Micro-organisms are tightly integrated into host-microbiota ecosystem. Microbiota of human semen has been studied so far mostly in case of infertility or prostatitis. We aimed to reveal possible impact of sexual debut on seminal microbiota in healthy young men. The study group included 68 young healthy men, of them 12 men without sexual experience, 11 men with single lifetime sexual partner and 45 men with multiple lifetime sexual partners. Basic semen parameters were similar for all subgroups, and no correlation between sexual experience and WBC counts in semen was found...
March 7, 2018: Andrology
https://www.readbyqxmd.com/read/29499098/the-impact-of-histones-linked-to-sperm-chromatin-on-embryo-development-and-art-outcome
#14
C Fournier, E Labrune, J Lornage, G Soignon, S Giscard d'Estaing, J-F Guérin, M Benchaib
The purpose of this study was to investigate the relationship between the proportion of sperm chromatin linked to remaining histone and assisted reproductive technology (ART) outcome. A prospective cohort study was performed on couples undergoing ART process at the Department of Reproduction Medicine (HFME, Bron, France). The histone-to-protamine ratio (HPR) was measured using the method described by Wykes & Krawetz (2003) J Biol Chem 278, 29471. The correlations with sperm DFI, blastocyst formation, pregnancy rate, and delivery rate were investigated...
March 2, 2018: Andrology
https://www.readbyqxmd.com/read/29481734/the-neuropeptide-orexin-a-search-for-its-possible-role-in-regulation-of-steroidogenesis-in-adult-mice-testes
#15
D Joshi, S K Singh
Orexin A, a hypothalamic neuropeptide, regulates food intake and sleep-wake cycle by binding to orexin receptor 1. Besides brain, orexin A and orexin receptor 1 are also present in peripheral organs. In our earlier studies, localization and expression of orexin A and orexin receptor 1 have been shown in adult mouse testis, and further their role in testicular development in neonatal mouse was also demonstrated. In this study, role of orexin A and orexin receptor 1 in the testis of adult mouse by blocking binding of orexin A to orexin receptor 1 using an orexin receptor 1 antagonist, SB-334867, was investigated under in vivo and ex vivo conditions...
February 26, 2018: Andrology
https://www.readbyqxmd.com/read/29481730/semen-quality-associated-with-subsequent-hospitalizations-can-the-effect-be-explained-by-socio-economic-status-and-lifestyle-factors
#16
T Latif, R Lindahl-Jacobsen, J Mehlsen, M L Eisenberg, S A Holmboe, K Pors, L Brinth, S O Skouby, N Jørgensen, T K Jensen
Semen quality is suggested to be a universal biomarker for future health. Previous studies have mostly been registry based excluding the possibility to address the importance of lifestyle, fertility status, health and socio-economic status. We aimed to investigate whether the association between semen quality and subsequent risk of hospitalization could be explained by differences in occupation, education, fertility, cryptorchidism, BMI or smoking; 1423 men with first semen sample at Fertility Clinic, Frederiksberg Hospital, Denmark, from 1977 to 2010 responded to a questionnaire in 2012 about current health, lifestyle, educational level and occupation...
February 26, 2018: Andrology
https://www.readbyqxmd.com/read/29481720/the-set-protein-promotes-androgen-production-in-testicular-leydig-cells
#17
B Zhang, W Ma, Q Zhu, W Xu, L Gao, B Xu, S Xu, C Gao, L Gao, J Liu, Y Cui
Approximately 40% of middle-aged men exhibit symptoms of late-onset hypogonadism (LOH). However, the mechanism of androgen deficiency is still currently unclear. As shown in our previous studies, the SET protein is expressed in testicular Leydig cells and ovarian granule cells. This study was designed to investigate the effect of the SET protein on androgen production in Leydig cells. The AdCMV/SET and AdH1siRNA/SET adenoviruses were individually transduced into a cultured mouse Leydig cell line (mLTC-1) with or without human chorionic gonadotropin (HCG) stimulation in vitro...
February 26, 2018: Andrology
https://www.readbyqxmd.com/read/29470852/high-quality-human-and-rat-spermatozoal-rna-isolation-for-functional-genomic-studies
#18
E Bianchi, A Stermer, K Boekelheide, M Sigman, S J Hall, G Reyes, E Dere, K Hwang
Sperm RNA is a sensitive monitoring endpoint for male reproductive toxicants, and a potential biomarker to assess male infertility and sperm quality. However, isolation of sperm RNA is a challenging procedure due to the heterogeneous population of cells present in the ejaculate, the low yield of RNA per spermatozoon, and the absence of 18S and 28S ribosomal RNA subunits. The unique biology of spermatozoa has created some uncertainty in the field about RNA isolation methods, indicating the need for rigorous quality control checks to ensure reproducibility of data generated from sperm RNA...
February 22, 2018: Andrology
https://www.readbyqxmd.com/read/29457367/sperm-morphological-normality-under-high-magnification-is-correlated-to-male-infertility-and-predicts-embryo-development
#19
B F Zanetti, D P A F Braga, R R Provenza, R C S Figueira, A Iaconelli, E Borges
Human sperm morphology has been described as an essential parameter for the diagnosis of male infertility and a prognostic indicator of natural or assisted pregnancies. Nevertheless, standard morphological assessment remains a subjective analysis and its impact on intracytoplasmic sperm injection (ICSI) is also of limited value. The objective of this prospective cohort study was to investigate whether motile sperm organelle morphology examination (MSOME) can improve semen analysis by better defining male infertility and providing a better prognosis for ICSI up to a year later...
February 18, 2018: Andrology
https://www.readbyqxmd.com/read/29457365/male-infertility-is-associated-with-altered-treatment-course-of-men-with-cancer
#20
O Eminaga, S Li, L C Baker, J D Brooks, M L Eisenberg
This study aims to evaluate whether cancer treatments differ in infertile men compared to men who have undergone vasectomy and age-matched controls. We analyzed subjects from the Truven Health MarketScan Claims database from 2001 to 2009. Infertile men were identified through diagnosis and treatment codes. Comparison groups included vasectomized men and an age-matched cohort who were not infertile and had not undergone vasectomy. We considered cancer types previously associated with infertility that were diagnosed after the diagnosis of infertility...
February 18, 2018: Andrology
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