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Andrology

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https://www.readbyqxmd.com/read/29888533/the-catch-checklist-to-investigate-adult-onset-hypogonadism
#1
REVIEW
G Defeudis, R Mazzilli, D Gianfrilli, A Lenzi, A M Isidori
Adult-onset hypogonadism is a syndrome often underdiagnosed, undertreated, or incompletely explored. There are various reasons for this: firstly, undefined age range of men in whom testosterone levels should be investigated and then no definitive serum cutoff point for the diagnosis of hypogonadism; and finally, variable and non-specific signs and symptoms; men and physicians do not pay adequate attention to sexual health. All these factors make the diagnostic criteria for hypogonadism controversial. The evaluation of the clinical features and causes of this syndrome, its link with age, the role of testosterone and other hormone levels, and the presence of any comorbidities are all useful factors in the investigation of this population...
June 10, 2018: Andrology
https://www.readbyqxmd.com/read/29873201/the-single-nucleotide-polymorphism-rs700518-is-an-independent-risk-factor-for-metabolic-syndrome-and-benign-prostatic-hyperplasia-mets-bph
#2
Z P Chen, Y Yan, C J Chen, M Li, C Chen, S C Zhao, T Song, T Liu, C H Zou, Q Xu, X Li
Studies have shown that 48.59% of benign prostate hyperplasia (BPH) is combined with metabolic syndrome (MetS). The mainstream view supports the correlation between MetS and BPH, but the pathogenesis of MetS-BPH is not fully understood. Four hundred and seventy-four men, aged 47 years or older, were recruited into this study by consecutive routine physical examination programs, and several parameters were obtained from each participant. Based on the diagnosis of BPH, MetS, and MetS-BPH, the participants were divided into BPH and Non-BPH groups, MetS and Non-MetS groups, as well as MetS-BPH and Non-MetS-BPH groups...
June 5, 2018: Andrology
https://www.readbyqxmd.com/read/29869453/insights-into-the-role-of-androgen-receptor-in-human-testicular-peritubular-cells
#3
C Mayer, M Adam, L Walenta, N Schmid, H Heikelä, K Schubert, F Flenkenthaler, K-G Dietrich, S Gruschka, G J Arnold, T Fröhlich, J U Schwarzer, F M Köhn, L Strauss, H Welter, M Poutanen, A Mayerhofer
Contractile smooth muscle-like peritubular cells build the wall of seminiferous tubules in men. They are crucial for sperm transport and complement the functions of Sertoli cells by secreting factors, including glial cell line-derived neurotrophic factor. Previous studies revealed that they also secrete the chemokine C-X-C motif chemokine ligand 12 (CXCL12), which has known roles in spermatogenesis. Peritubular cells express the androgen receptor (AR), which is retained in isolated human testicular peritubular cells...
June 5, 2018: Andrology
https://www.readbyqxmd.com/read/29869442/the-volume-of-unilaterally-undescended-testis-after-hcg-therapy-compared-to-orchidopexy-and-combined-methods
#4
J Niedzielski, P Kucharski, J Slowikowska-Hilczer
The aim of the study was to compare the effects of human chorionic gonadotropin (hCG) therapy with those of surgical or combined therapy on testicular volume (TV) in boys at different ages with unilateral canalicular undescended testis (UDT). In total, 155 boys aged 1 to 12 years were treated: either surgically (ST), or by 50 IU/kg body weight hCG administration every three days for five weeks (HT), or by a combination of the two. The patients underwent ultrasound examination of TV before the treatment, 9-12 (median 10) and 24-39 months (median 32) after therapy...
June 4, 2018: Andrology
https://www.readbyqxmd.com/read/29858538/benign-prostatic-hyperplasia-and-intraprostatic-inflammation-are-associated-with-liver-inflammation-it-s-time-for-prevention
#5
S Privitera, G I Russo, S La Vignera, R A Condorelli, A E Calogero, F Cantiello, R Damiano, V Favilla, S Cimino, G Morgia
Some evidences have supported the link between benign prostatic hyperplasia (BPH)/lower urinary tract symptoms (LUTS) and inflammation. In this study, we aimed to evaluate the association between prostatic inflammation (PI) and non-alcoholic steatohepatitis (NASH) evaluated by a non-invasive scores in a cohort of patients affected by BPH/LUTS. Between January 2012 and January 2016, we conducted a prospective study in a single academic outpatient clinic on 132 consecutive patients who underwent surgery for lower urinary tract symptoms (LUTS) due to bladder outlet obstruction (BOO)...
June 1, 2018: Andrology
https://www.readbyqxmd.com/read/29858528/melatonin-affects-the-motility-and-adhesiveness-of-in-vitro-capacitated-boar-spermatozoa-via-a-mechanism-that-does-not-depend-on-intracellular-ros-levels
#6
Martina Rocco, Rafael Betarelli, Anna Placci, Josep M Fernández-Novell, Marcella Spinaci, Adriana Casao, Teresa Muiño-Blanco, José A Cebrián-Pérez, Alejandro Peña, Teresa Rigau, Sergi Bonet, Miriam Castillo-Martín, Marc Yeste, Joan E Rodríguez-Gil
This work sought to address the effects of melatonin during in vitro capacitation (IVC) and progesterone-induced acrosome exocytosis (IVAE) in boar spermatozoa. With this purpose, two different experiments were set. In the first one, IVC and IVAE were induced in the absence or presence of melatonin, which was added either at the start of IVC or upon triggering the IVAE with progesterone. Different parameters were evaluated, including intracellular levels of peroxides and superoxides, free cysteine radicals and distribution of specific lectins...
June 1, 2018: Andrology
https://www.readbyqxmd.com/read/29752777/study-of-ras-mapk-pathway-gene-variants-in-chilean-patients-with-cryptorchidism
#7
F Rodríguez, C Vallejos, D Ponce, N Unanue, M I Hernández, S Célis, K Arcos, F Belmar, M T López, F Cassorla
Cryptorchidism is one of the most common congenital disorders in boys, and several genetic, hormonal, and environmental factors have been proposed as possible causes for this genitourinary defect. Genetic factors have been intensively searched, but relatively few pathogenic variants have been described. Cryptorchidism is a frequent finding in patients with RASopathies, a group of syndrome caused by mutations in genes of the Ras/MAPK pathway. Our aim was to determine whether patients with isolated cryptorchidism (IC) exhibit Ras/MAPK pathway gene variants associated with RASopathies...
May 11, 2018: Andrology
https://www.readbyqxmd.com/read/29752772/associations-between-circulating-sex-steroid-hormones-and-leukocyte-telomere-length-in-men-in-the-national-health-and-nutrition-examination-survey
#8
S B Coburn, B I Graubard, B Trabert, K A McGlynn, M B Cook
Preliminary evidence suggests that sex steroid hormones, such as danazol (a synthetic sex steroid hormone), may be involved in enhancing telomerase activity. Elucidating underlying mechanisms of telomerase activity may further therapeutic options for individuals with telomeropathies and potentially avert certain age-related conditions. Therefore, we conducted a cross-sectional study to investigate the relationship between circulating sex steroid hormones and SHBG with leukocyte telomere length among 499 males in NHANES (1999-2002 surveys)...
May 11, 2018: Andrology
https://www.readbyqxmd.com/read/29749711/brachyury-oncogene-is-a-prognostic-factor-in-high-risk-testicular-germ-cell-tumors
#9
F Pinto, F M Cárcano, E C A da Silva, D O Vidal, C Scapulatempo-Neto, L F Lopes, R M Reis
The T-box transcription factor Brachyury has been considered a cancer-specific marker and a novel oncotarget in solid tumors. Brachyury overexpression has been described in various cancers, being associated with epithelial-mesenchymal transition, metastasis, and poor prognosis. However, its clinical association with testicular germ cell tumor is unknown. We analyzed the expression of Brachyury by immunohistochemistry in a series of well-characterized testicular germ cell tumor samples and at transcript level by in silico analysis...
May 10, 2018: Andrology
https://www.readbyqxmd.com/read/29733116/collagenase-clostridium-histolyticum-for-the-treatment-of-peyronie-s-disease-a-prospective-italian-multicentric-study
#10
M Capece, A Cocci, G Russo, G Cito, G Giubilei, G Cacciamani, G Garaffa, M Falcone, M Timpano, G Tasso, F Sessa, R Campi, F Di Maida, T Cai, G Morelli, B Giammusso, P Verze, A Palmieri, D Ralph, V Mirone, N Mondaini
Peyronie's disease (PD) is a common condition which results in penile curvature making sexual intercourse difficult or impossible. Collagenase clostridium histolyticum (CCH) is the first licensed drug for the treatment of PD and is indicated in patients with palpable plaque and curvature deformity of at least 30° of curvature. However, only few monocentric studies are available in the current literature and this is the first national multicentric study focusing on this new treatment. In five Italian centres, 135 patients have completed the treatment with three injections of CCH using Ralph's shortened modified protocol...
May 7, 2018: Andrology
https://www.readbyqxmd.com/read/29726126/human-prostasomes-from-normozoospermic-and-non-normozoospermic-men-show-a-differential-protein-expression-pattern
#11
A García-Rodríguez, M de la Casa, H Peinado, J Gosálvez, R Roy
Prostasomes are exosomes such as extracellular vesicles, produced in the prostatic epithelium and released into the seminal plasma, that play an important role enhancing male fertility. Although some studies have demonstrated that prostasomes have a rich proteomic content, it is still unclear if that proteomic content varies depending on the male fertility status. Prostasomes from 12 normozoospermic and 14 non-normozoospermic seminal samples were isolated by differential ultracentrifugation. Protein content was studied by quantitative mass spectrometry and compared between both cohorts...
May 3, 2018: Andrology
https://www.readbyqxmd.com/read/29722171/parabens-generate-reactive-oxygen-species-in-human-spermatozoa
#12
S V A C Samarasinghe, K Krishnan, R Naidu, M Megharaj, K Miller, B Fraser, R J Aitken
Parabens are used as antimicrobial preservative agent in many commercial products including cosmetics and pharmaceuticals. Weak oestrogenic and antiandrogenic activities have been attributed to parabens in in vitro and in vivo studies. In this study, human spermatozoa were exposed to different concentrations of an equimolar paraben mixture containing methyl, ethyl, propyl and butylparaben as well as to methylparaben alone at a concentration that is typical of commercially available vaginal lubricants. The induction of oxidative stress and DNA damage was then assessed at different time points...
May 2, 2018: Andrology
https://www.readbyqxmd.com/read/29673127/cstf2t-regulates-expression-of-histones-and-histone-like-proteins-in-male-germ-cells
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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...
May 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
#20
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...
May 2018: Andrology
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