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https://www.readbyqxmd.com/read/28820276/attenuation%C3%A2-of-sulfite-induced-testicular-injury-in-rats-by-zingiber-officinale-roscoe
#1
Akbar Afkhami Fathabad, Shahnaz Shekarforoush, Maryam Hoseini, Zahra Ebrahimi
Sulfite salts, including sodium metabisulfte, are widely used as preservatives in foods and pharmaceutical agents. Previous studies suggest that oxidative stress may be an important mediator of testicular injury. The present study was designed to elucidate the effect of exposure to sodium metabisulfite by gavage without or with Zingiber officinale (ginger) extract on the rat testes. Thirty-two male Wistar rats were randomly divided into control, ginger-treated (500 mg/kg/day), sodium metabisulfite- (SMB-) treated (260 mg/kg/day), and SMB + ginger- (SZ-) treated groups...
August 18, 2017: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/28817891/re-characterising-the-safety-of-clomiphene-citrate-in-male-patients-through-prostate-specific-antigen-haematocrit-and-testosterone-levels
#2
Craig Niederberger
No abstract text is available yet for this article.
September 2017: Journal of Urology
https://www.readbyqxmd.com/read/28816715/testosterone-therapy-improves-erectile-function-and-libido-in-hypogonadal-men
#3
Paul J Rizk, Taylor P Kohn, Alexander W Pastuszak, Mohit Khera
PURPOSE OF REVIEW: Erectile dysfunction and decreased libido are common complaints in the older male population. Recent studies have elucidated the role testosterone therapy (TTh) can play in men with low testosterone levels. The aim of this review is to provide an overview of these findings and the utility of TTh. We specifically examine the role of TTh on erectile function, coadministration with phosphodiesterase type 5 inhibitors, and libido. RECENT FINDINGS: Recent publications suggest that TTh improves mild erectile dysfunction, though may be less useful in men with more severe erectile dysfunction...
August 14, 2017: Current Opinion in Urology
https://www.readbyqxmd.com/read/28816201/risk-factors-and-the-prognosis-of-sexual-dysfunction-in-male-patients-with-pituitary-adenomas-a-multivariate-analysis
#4
Wen-Jian-Long Zhou, Shun-Chang Ma, Min Zhao, Chang Liu, Xiu-Dong Guan, Zhao-Shi Bao, Gui-Jun Jia, Wang Jia
The impact of sexual dysfunction (SD) is distressing to many male patients with pituitary adenomas which affect both physical and psychological health. The research explored to identify risk factors affecting sexual function and the prognosis of male patients with pituitary adenomas. Two hundred and fifty-four male patients, who aged between 18 and 60 (mean ± s.d.: 44.16 ± 10.14) years and diagnosed with pituitary adenomas, were retrospectively analyzed. One hundred and fifty-nine patients (62.6%) complained of SD prior to surgery...
August 11, 2017: Asian Journal of Andrology
https://www.readbyqxmd.com/read/28815018/serum-complexed-and-free-prostate-specific-antigen-levels-are-lower-in-female-elite-athletes-in-comparison-to-control-women
#5
Emma Eklund, Eleftherios P Diamandis, Carla Muytjens, Sarah Wheeler, Anu Mathew, Martin Stengelin, Eli Glezer, Galina Nikolenko, Marshall D Brown, Yingye Zheng, Angelica Lindén Hirschberg
BACKGROUND: We hypothesize that prostate specific antigen (PSA), a protein that it is under regulation by androgens, may be differentially expressed in female elite athletes in comparison to control women. METHODS: We conducted a cross-sectional study of 106 female athletes and 114 sedentary age-matched controls.  Serum from these women was analyzed for complexed prostate specific antigen (cPSA) and free prostate specific antigen (fPSA), by fifth generation assays with limits of detection of around 6 and 140 fg/mL, respectively...
2017: F1000Research
https://www.readbyqxmd.com/read/28814452/medical-ovariectomy-in-menopausal-breast-cancer-patients-with-high-testosterone-levels
#6
Giorgio Secreto, Paola Muti, Milena Sant, Elisabetta Meneghini, Vittorio Krogh
Five years of adjuvant therapy with anti-estrogens reduce the incidence of disease progression by about 50% in estrogen receptor-positive breast cancer patients, but late relapse can still occur after that anti-estrogens have been discontinued. In these patients, excessive androgen production may account for renewed excessive estrogen formation and increased risk of late relapse. In the 50% of patients who do not benefit with anti-estrogens, the effect of therapy is limited by de novo or acquired resistance to treatment...
August 16, 2017: Endocrine-related Cancer
https://www.readbyqxmd.com/read/28813252/oxytocin-a-parenting-hormone
#7
REVIEW
Ruth Feldman, Marian J Bakermans-Kranenburg
In non-human mammals mothering is hormone-dependent, with crucial roles for oxytocin and prolactin. While human parenting is not hormone-dependent, hormonal changes in oxytocin, vasopressin, prolactin, testosterone, and cortisol prime and accompany the expression of parenting. In the following we focus on oxytocin (OT) as a key hormone in human parenting. OT is a nine-amino-acid neuropeptide hormone which evolved from the ancient vasotocin molecule approximately 650 MYO. OT is implicated in sociality across vertebrate evolution and substantial research has pinpointed its role in birth, lactation, and maternal care in mammals...
June 2017: Current Opinion in Psychology
https://www.readbyqxmd.com/read/28812471/effectiveness-and-tolerability-of-parenteral-testosterone-undecanoate-a-post-marketing-surveillance-study
#8
Jan Wolf, Dieter Keipert, Heiko Motazedi, Michael Ernst, Joanne Nettleship, Louis Gooren
This observational post-marketing study of parenteral testosterone undecanoate (TU) in a non-selected population aimed to: examine the effectiveness of TU as treatment of hypogonadism; record adverse drug reactions (ADR) quantitatively particularly regarding polycythemia, prostate safety and cardiovascular-related metabolic risk factors; and verify whether recommended injection intervals apply to routine clinical practice. Eight hundred and seventy subjects from 259 outpatient units scheduled to visit the clinic six times were included...
August 16, 2017: Aging Male: the Official Journal of the International Society for the Study of the Aging Male
https://www.readbyqxmd.com/read/28811844/lsd1-dual-function-in-mediating-epigenetic-corruption-of-the-vitamin-d-signaling-in-prostate-cancer
#9
Sebastiano Battaglia, Ellen Karasik, Bryan Gillard, Jennifer Williams, Trisha Winchester, Michael T Moser, Dominic J Smiraglia, Barbara A Foster
BACKGROUND: Lysine-specific demethylase 1A (LSD1) is a key regulator of the androgen (AR) and estrogen receptors (ER), and LSD1 levels correlate with tumor aggressiveness. Here, we demonstrate that LSD1 regulates vitamin D receptor (VDR) activity and is a mediator of 1,25(OH)2-D3 (vitamin D) action in prostate cancer (PCa). METHODS: Athymic nude mice were xenografted with CWR22 cells and monitored weekly after testosterone pellet removal. Expression of LSD1 and VDR (IHC) were correlated with tumor growth using log-rank test...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/28811197/seasonal-changes-in-plasma-testosterone-and-cortisol-suggest-an-androgen-mediated-regulation-of-the-pituitary-adrenal-axis-in-the-tarabul-s-gerbil-gerbillus-tarabuli-thomas-1902
#10
Yamina Zatra, Naouel Aknoun-Sail, Arezki Kheddache, Abdelouafi Benmouloud, Salima Charallah, Elara N Moudilou, Jean-Marie Exbrayat, Farida Khammar, Zaina Amirat
In the desert gerbil Gerbillus tarabuli (Thomas, 1902), cortisol is the main glucocorticosteroid produced by the adrenal glands. Plasma cortisol concentrations show highest values when testosterone is reduced and lowest values during the breeding season which occurs from early winter to late spring. In order to specify the implication of testicular androgens in these corticosteroid seasonal variations we investigated the effects induced by gonadectomy performed during the breeding season on the pituitary adrenal axis...
August 12, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28811191/can-psychological-well-being-scales-and-hormone-levels-be-used-to-predict-acute-performance-of-anaerobic-training-tasks-in-elite-female-volleyball-players
#11
Juan Mielgo-Ayuso, Michael C Zourdos, Vicente J Clemente-Suárez, Julio Calleja-González, Amber M Shipherd
The purpose of this study was to examine relationships between pre-training psychological well-being assessment scales (General Health Questionnaire-28-GHQ-28, Competitive State Anxiety Inventory-2-CSAI-2, Sport Competition Anxiety Test-SCAT, State-Trait Anxiety Inventory-S-STAI-S, Oviedo Sleep Questionnaire-OSQ and Psychological Characteristics Related to Sport Performance-PCSP), and pre-training stress hormone concentrations (cortisol-C, total testosterone-TT, free testosterone-FT, adrenocorticotropic hormone-ACTH and testosterone/cortisol-T/C ratios), on acute neuromuscular performance (ANP) in female volleyballers...
August 12, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28809938/perinatal-testosterone-exposure-potentiates-vascular-dysfunction-by-er%C3%AE-suppression-in-endothelial-progenitor-cells
#12
Weiguo Xie, Mingming Ren, Ling Li, Yin Zhu, Zhigang Chu, Zhigang Zhu, Qiongfang Ruan, Wenting Lou, Haimou Zhang, Zhen Han, Xiaodong Huang, Wei Xiang, Tao Wang, Paul Yao
Recent clinical cohort study shows that testosterone therapy increases cardiovascular diseases in men with low testosterone levels, excessive circulating androgen levels may play a detrimental role in the vascular system, while the potential mechanism and effect of testosterone exposure on the vascular function in offspring is still unknown. Our preliminary results showed that perinatal testosterone exposure in mice induces estrogen receptor β (ERβ) suppression in endothelial progenitor cells (EPCs) in offspring but not mothers, while estradiol (E2) had no effect...
2017: PloS One
https://www.readbyqxmd.com/read/28807505/delayed-ejaculation-and-associated-complaints-relationship-to-ejaculation-times-and-serum-testosterone-levels
#13
Abraham Morgentaler, Paula Polzer, Stanley Althof, Alexander Bolyakov, Craig Donatucci, Xiao Ni, Ankur B Patel, Shehzad Basaria
BACKGROUND: Although delayed ejaculation (DE) is typically characterized as a persistently longer than anticipated or desired time to ejaculation (or orgasm) during sexual activity, a timing-based definition of DE and its association with serum testosterone has not been established in a large cohort. AIM: To examine in an observational study estimated intravaginal ejaculatory latency time (IELT) and masturbatory ejaculation latency time (MELT) in men self-reporting DE, assess the association of IELT and MELT with serum testosterone levels, and determine whether correlation with demographic and sexual parameters exist...
August 11, 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/28804590/feminizing-adrenocortical-carcinoma-without-gynecomastia
#14
Farida Chentli, Fadila Chabour, Djafer Bouchibane, Nouria Nouar
Malignant feminizing adrenocortical tumors are exceedingly rare. Their main presentation is gynecomastia. In these estrogen secreting tumors (with or without other adrenocortical hormones) lack of gynecomastia is exceptional as in our case. A 44-year-old man presented with abdominal pain. Radiological assessment revealed a tumor measuring 120 × 95 mm in the retroperitoneal area with numerous metastases. Pathological examination pleaded for an adrenal origin with a Weiss's score of 5. Six months later, the tumor relapsed, and he had a second surgery and was sent for hormone assessment...
July 2017: Oman Medical Journal
https://www.readbyqxmd.com/read/28803647/determination-of-selected-endogenous-anabolic-androgenic-steroids-and-ratios-in-urine-by-ultra-high-performance-liquid-chromatography-tandem-mass-spectrometry-and-isotope-pattern-deconvolution
#15
J Pitarch-Motellón, J V Sancho, M Ibáñez, O Pozo, A F Roig-Navarro
An isotope dilution mass spectrometry (IDMS) method for the determination of selected endogenous anabolic androgenic steroids (EAAS) in urine by UHPLC-MS/MS has been developed using the isotope pattern deconvolution (IPD) mathematical tool. The method has been successfully validated for testosterone, epitestosterone, androsterone and etiocholanolone, employing their respective deuterated analogs using two certified reference materials (CRM). Accuracy was evaluated as recovery of the certified values and ranged from 75% to 108%...
August 3, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28802821/association-of-sex-hormones-with-metabolic-syndrome-among-egyptian-males
#16
Iman Z Ahmed, Maram M Mahdy, Hussein El Oraby
BACKGROUND: Studies have shown that testosterone and estradiol (E2) are associated with metabolic syndrome (MetS). To our knowledge, few studies, if any about the association of endogenous sex hormones with MetS have been done in Egypt. AIM: To study the relation between endogenous sex hormones and MetS among Egyptian males. SUBJECTS AND METHOD: For the study, 80 Egyptian males were enrolled: 40 males with MetS and 40 healthy age-matched males...
August 5, 2017: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/28800500/sb223412-a-neurokinin-3-receptor-selective-antagonist-suppresses-testosterone-secretion-in-male-guinea-pigs
#17
Sho Nakamura, Yoshiko Ito, Koki Yamamoto, Chudai Takahashi, Mingdao Dai, Miyu Tanahashi, Yoshihisa Uenoyama, Hiroko Tsukamura, Shinya Oishi, Kei-Ichiro Maeda, Fuko Matsuda
Guinea pigs are important zoo animals and have been recommended for animal-assisted activities or therapy, however there are problems concerning testosterone inducing aggressive or sexual behaviors in male guinea pigs. Testicular testosterone secretion is regulated by pulsatile gonadotropin releasing hormone (GnRH)/luteinizing hormone (LH) release in mammals. The mechanism generating GnRH/LH pulses is thought to be governed by kisspeptin neurons, which coexpress neurokinin B (NKB) and dynorphin A (Dyn), in the arcuate nucleus (ARC)...
July 31, 2017: Theriogenology
https://www.readbyqxmd.com/read/28800472/phthalate-and-bisphenol-a-exposure-during-in-utero-windows-of-susceptibility-in-relation-to-reproductive-hormones-and-pubertal-development-in-girls
#18
Deborah J Watkins, Brisa N Sánchez, Martha Maria Téllez-Rojo, Joyce M Lee, Adriana Mercado-García, Clara Blank-Goldenberg, Karen E Peterson, John D Meeker
BACKGROUND: Over the past several decades, the age of pubertal onset in girls has shifted downward worldwide. As early pubertal onset is associated with increased risky behavior and psychological issues during adolescence and cardiometabolic disease and cancer in adulthood, this is an important public health concern. Exposure to endocrine disrupting chemicals during critical windows of in utero development may play a role in this trend. Our objective was to investigate trimester-specific phthalate and BPA exposure in relation to pubertal development among girls in the Early Life Exposure in Mexico to Environmental Toxicants (ELEMENT) birth cohort...
August 8, 2017: Environmental Research
https://www.readbyqxmd.com/read/28799438/structural-evaluation-of-the-peritubular-sheath-of-rat-s-testes-after-administration-of-ribavirin-a-possible-impact-on-the-testicular-function
#19
Shaima M Almasry, Zeinab A Hassan, Wael M Elsaed, Yasser M Elbastawisy
Effects of ribavirin on the structure of peritubular sheath (PS) of seminiferous tubules and on testicular functions were studied. We found that ribavirin at a dose of 4 mg/kg/day for 4 weeks produced a significant reduction in testosterone level (6.3 ± 0.2; P < 0.001) and in spermatogenic score count (3.8 ± 0.2; P < 0.001) compared to control values. The thickness of PS (17.8 ± 1.13) and tubular lumen perimeter (1024.7 ± 67) was significantly increased compared to controls (10...
August 1, 2017: International Journal of Immunopathology and Pharmacology
https://www.readbyqxmd.com/read/28797804/a-game-of-two-gene-expression-analysis-of-brain-cyp19a1b-and-gonadal-cyp19a1a-aromatase-in-females-of-a-neotropical-cichlid-fish-through-the-parental-care-period-and-removal-of-the-offspring
#20
Martín R Ramallo, Renato M Honji, Agustina Birba, Leonel Morandini, María L Varela, Griselda Genovese, Renata G Moreira, Gustavo M Somoza, Matías Pandolfi
For many species parental behavior is essential for the survival of the offspring. While the ultimate causes of teleost parental behavior have been widely studied, comparatively little is known about its proximate causes. The aim of this study was to analyze the yet unexplored, potential dual role of brain and gonadal aromatases, the enzymes responsible for the conversion of androgens to estrogens in the brains and gonads of teleosts, respectively, on the different stages of the maternal care period of the biparental cichlid Cichlasoma dimerus, locally known as chanchita...
August 7, 2017: General and Comparative Endocrinology
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