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https://www.readbyqxmd.com/read/29785601/alteration-in-apoptotic-rate-of-testicular-cells-and-sperms-following-administration-of-bisphenol-a-bpa-in-wistar-albino-rats
#1
Seema Srivastava, Priya Gupta
The aim of the study was to evaluate the effect of Bisphenol A [BPA] widely used as a plasticizer in the formation of polycarbonate plastics and epoxy resins, exposure causing alteration in apoptosis rate, and protective effect of Vitamin E when supplemented with BPA orally. Adult male Wistar albino rats aged 3 months were randomly divided into seven groups: control (olive oil treated) BPA-treated (dose 5, 50,100 μg/100gmBW) and Vitamin E intervention group (dose 5, 50, 100 μg/100gmBW BPA+ Vitamin E dose 4 mg/100gmBW)...
May 21, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29783655/gdf11-modulates-ca-2-dependent-smad2-3-signaling-to-prevent-cardiomyocyte-hypertrophy
#2
Javier Duran, Mayarling Francisca Troncoso, Daniel Lagos, Sebastian Ramos, Gabriel Marin, Manuel Estrada
Growth differentiation factor 11 (GDF11), a member of the transforming growth factor-β family, has been shown to act as a negative regulator in cardiac hypertrophy. Ca2+ signaling modulates cardiomyocyte growth; however, the role of Ca2+ -dependent mechanisms in mediating the effects of GDF11 remains elusive. Here, we found that GDF11 induced intracellular Ca2+ increases in neonatal rat cardiomyocytes and that this response was blocked by chelating the intracellular Ca2+ with BAPTA-AM or by pretreatment with inhibitors of the inositol 1,4,5-trisphosphate (IP₃) pathway...
May 18, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29782225/a-comparison-of-reproductive-and-energetic-states-in-a-marine-apex-predator-the-tiger-shark-galeocerdo-cuvier
#3
Neil Hammerschlag, Rachel A Skubel, James Sulikowski, Duncan J Irschick, Austin J Gallagher
To fuel the high energetic demands of reproduction, vertebrates employ different tactics of resource use. Large sharks exhibit long gestation periods and have relatively few well-developed young, which likely incurs high energetic costs. However, information on the relationship between the reproductive and energetic states for most shark species is lacking. In the present study, we used a noninvasive approach to assess relationships among reproductive stage, plasma triglyceride levels, body condition, and circulating reproductive hormones in free-ranging female tiger sharks (Galeocerdo cuvier)...
July 2018: Physiological and Biochemical Zoology: PBZ
https://www.readbyqxmd.com/read/29782138/testosterone-and-testicular-changes-in-f1-offspring-of-wistar-rats-maternally-exposed-to-nicotine-during-gestation
#4
Ibukun P Oyeyipo, Damilare H Adeyemi, Temilade R Abe
OBJECTIVES: This study aimed to determine the effect of intrauterine exposure to nicotine in the first fourteen days of gestation on the testicular function of male Wistar rats. METHODS: Pups of both control and nicotine-treated groups were selected and sacrificed on day 60 after birth. Birth weight, weight of reproductive organs, hormonal profile, and histopathology were determined in the first filial (F1) generation. RESULTS: Significant decreases in birth weight and litter size were found in the pups treated with nicotine when compared with the animals in the control group...
May 21, 2018: JBRA Assisted Reproduction
https://www.readbyqxmd.com/read/29781510/tramadol-opioid-abuse-is-associated-with-a-dose-and-time-dependent-poor-sperm-quality-and-hyperprolactinaemia-in-young-men
#5
A G A Farag, M A Basha, S A Amin, N F Elnaidany, N G Elhelbawy, M M T Mostafa, S A Khodier, R A Ibrahem, R Z Mahfouz
Tramadol, one of the most commonly abused drugs in Middle East, impacts spermatogenesis and disturbs reproductive hormones in animal studies. We aimed to investigate tramadol impact on sperm quality and on levels of testosterone, prolactin and gonadotropins, in tramadol abusers (n = 30) to age-matched control (n = 30). Abusers had significantly low percentages of sperm motility, normal forms and vitality compared with control (95% CI -40.7 to -19.3, -13.5 to -9.3 and -31.9 to -9.7 respectively). Hypoandrogenism (95% CI -4...
May 21, 2018: Andrologia
https://www.readbyqxmd.com/read/29781039/sex-dependent-association-of-circulating-sex-steroids-and-pituitary-hormones-with-treatment-free-survival-in-chronic-lymphocytic-leukemia-patients
#6
Eric P Allain, Karin Venzl, Patrick Caron, Véronique Turcotte, David Simonyan, Michaela Gruber, Trang Le, Eric Lévesque, Chantal Guillemette, Katrina Vanura
Chronic lymphocytic leukemia (CLL) is not considered a hormone-regulated cancer although sex is a recognized risk factor with men more frequently diagnosed and developing progressive disease. We hypothesized that variable hormonal exposure may have a sexually dimorphic influence on treatment-free survival (TFS). In 156 CLL cases, we quantitatively profiled 29 circulating steroids (progesterone, adrenal precursors, androgens, estrogens, and catechol estrogens) as well as luteinizing hormone (LH) and follicle-stimulating hormone...
May 21, 2018: Annals of Hematology
https://www.readbyqxmd.com/read/29779488/bisphenol-a-induced-endocrinotoxicity-and-male-reprotoxicopathy-is-modulated-by-the-dietary-iron-deficiency
#7
Hina Rashid, Shikha Sharma, Saba Beigh, Firoz Ahmad, Sheikh Raisuddin
INTRODUCTION: Bisphenol A (BPA) is suspected to cause hormonal imbalance in humans. Dietary factors are known to bring changes in hormonal profile. In order to study chemico-biological interaction of iron deficiency on toxicity outcome of BPA exposure, we studied the modulatory effects of iron deficiency on the hormone levels in rats chronically-exposed to BPA. METHODS: Weanling rats maintained on normal and iron-deficient diets were exposed to low level of BPA at 0, 1, 5 and 10 ppm for six months through drinking water...
May 20, 2018: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/29778459/bisphenol-a-inhibits-improvement-of-testosterone-in-anxiety-and-depression-like-behaviors-in-gonadectomied-male-mice
#8
Yvfeng Liang, Jiahong Li, Tao Jin, Ting Gu, Qingjie Zhu, Yizhong Hu, Yang Yang, Jisui Li, Donghong Wu, Kesheng Jiang, Xiaohong Xu
Bisphenol-A (BPA) is a well-known environmental endocrine disruptor. Developmental exposure to BPA affected a variety of behaviors in multiple model organisms. Our recent study found that exposure to BPA during adulthood aggravated anxiety- and depression-like states in male mice but not in females. In this study, 11-w-old gonadectomied (GDX) male mice daily received subcutaneous injections of testosterone propionate (TP, 0.5 mg/kg), TP and BPA (0.04, 0.4, or 4 mg/kg), or vehicle for 45 days. BPA (0.4 or 4 mg/kg) did not affect the elevated plus maze task of GDX mice but shortened the time on open arms and decreased the frequency of head dips of sham and TP-GDX mice...
May 17, 2018: Hormones and Behavior
https://www.readbyqxmd.com/read/29777790/effect-of-intratesticular-hematoma-on-testis-microstructure-spermatogenesis-and-testosterone-production-defining-a-cut-off-point-for-significant-intratesticular-hematoma
#9
Alireza Aminsharifi, Alireza Monsef, Ali Noorafshan, Saied Karbalay-Doust, Zahra Jafarinezhad, Omid Koohi, Afshin Molaei
OBJECTIVES: To evaluate the effect of different degrees of intratesticular hematoma (ITH), a major consequence of blunt testis trauma, on testis microstructure and function. We determined a cut-off point for significant vs. nonsignificant ITH. METHODS: Seventy male rats were divided into 7 equal groups. The control group (G) remained intact. Sham groups consisted of rats given an intratesticular injection of normal saline in both testicles with volumes equivalent to 40% of testis volume (G-II), 30% (G-III) and 10% (G-IV)...
May 16, 2018: Urology
https://www.readbyqxmd.com/read/29777728/testosterone-induced-downregulation-of-migration-and-proliferation-in-human-umbilical-vein-endothelial-cells-by-androgen-receptor-dependent-and-independent-mechanisms
#10
Aulona Gaba, Mario Mairhofer, Zyhdi Zhegu, Nadja Leditznig, Ladislaus Szabo, Walter Tschugguel, Christian Schneeberger, Iveta Yotova
Recent research has emphasized the potential unfavorable effects of declining testosterone (T) levels in men and the putative beneficial effect of androgen therapy in select women. Some controversy surrounding the mechanism of action and the effects of T on endothelium remains. In this study, we evaluated the mechanism of T action on pooled primary Human Umbilical Vein Endothelial Cells (HUVEC) of mixed gender by focusing on two important processes, proliferation and migration. In our in vitro model system, we found that only the supra-physiological dose of T affected these two processes irrespective of the ratio of male to female cells in the pools...
May 16, 2018: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/29777495/ameliorative-effect-of-ginseng-extract-on-phthalate-and-bisphenol-a-reprotoxicity-during-pregnancy-in-rats
#11
Islam M Saadeldin, Mohamed A Hussein, Aida Hamid Suleiman, Mahmoud G Abohassan, Mona M Ahmed, Amr A Moustafa, Abdullah F Moumen, Ayman Abdel-Aziz Swelum
Phthalates (such as DEHP) and bisphenol A (BPA) are widely used chemicals in plastics manufacturing and exert public health concerns as endocrine disrupters. This study was designed to investigate the deleterious effect of DEHP and BPA on endocrine profile of pregnant female rats and the combined treatment with ginseng extract (Panax ginseng). Seventy-two pregnant rats were divided into six groups (control, ginseng, DEHP, BPA, Gin + DEHP, and Gin + BPA), 12 females per each group. The drugs were supplemented from pregnancy day 0 until day 20...
May 18, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29777417/effects-of-dietary-microencapsulated-cymbopogon-flexuosus-essential-oil-on-reproductive-related-parameters-in-male-rhamdia-quelen
#12
Carine de Freitas Souza, Cristine Rampelotto, Bruno Bianchi Loureiro, Fernanda Alves Pereira, Adriane Erbice Bianchini, Carine Dahl Corcini, Antonio Sergio Varela Junior, Tatiana Emanuelli, Leila Picolli da Silva, Sílvio Teixeira da Costa, Kalyne Bertolin, Monique Tomazele Rovani, Paulo Bayard Dias Gonçalves, Berta Maria Heinzmann, Bernardo Baldisserotto
In aquaculture, nutrition and supplemented diets have been shown to affect broodstock reproductive performance. In this study, we investigated the effects of dietary supplementation with Cymbopogon flexuosus essential oil (CFEO) microcapsules on reproductive-related parameters in silver catfish (Rhamdia quelen) male broodfish. Adult male broodstocks were separated into three groups according to the concentrations of supplemented CFEO (0.0 = control; 1.0 or 3.0 mL per kg of diet). After 20 days under experimental conditions, the animals were euthanized and the gonads were harvested for gonadosomatic index, sperm analysis, oxidative stress, and histopathology; testosterone levels were measured in the plasma; gene expression of prl, smtl, pomca, and pomcb was assessed in the pituitary gland by real-time PCR...
May 18, 2018: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/29777382/mood-sexuality-and-relational-intimacy-after-starting-androgen-deprivation-therapy-implications-for-couples
#13
Lauren M Walker, Pablo Santos-Iglesias, John Robinson
BACKGROUND: Patients on androgen deprivation therapy (ADT), a common treatment for prostate cancer, report significant declines in quality of life and detrimental impact on their intimate relationships. ADT depresses a man's testosterone to castrate levels, leading to declines in sexual function, and changes in mood. These changes can have profound impact on couples' intimate relationships. METHOD: Patients undergoing ADT, and their consenting partners, were followed on a variety of outcomes relating to mood, sexual changes, and relational intimacy...
May 18, 2018: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/29777228/effects-of-clomiphene-citrate-on-male-obesity-associated-hypogonadism-a-randomized-double-blind-placebo-controlled-study
#14
Andressa Heimbecher Soares, Nidia Celeste Horie, Lucas Augusto Piccinin Chiang, Bruno Caramelli, Mariana Gomes Matheus, Alexandre Holthausen Campos, Luciana Cavalheiro Marti, Fernanda Agostini Rocha, Marcio C Mancini, Elaine Maria Frade Costa, Cintia Cercato
BACKGROUND: Obesity causes secondary hypogonadism (HG) in men. Standard testosterone (T) replacement therapy improves metabolic parameters but leads to infertility. OBJECTIVE: To evaluate clomiphene citrate (CC) treatment of adult men with male obesity-associated secondary hypogonadism (MOSH). DESIGN: Single-center, randomized, double-blind, placebo-controlled trial. PARTICIPANTS: Seventy-eight men aged 36.5 ± 7...
May 17, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29776996/effects-of-chronic-exposure-to-12%C3%A2-saltwater-on-the-endocrine-physiology-of-juvenile-american-alligator-alligator-mississippiensis
#15
P C Faulkner, M L Burleson, L Simonitis, C Marshall, D Hala, L H Petersen
American alligator ( Alligator mississippiensis , Linnaeus) habitats are prone to saltwater intrusion following major storms, hurricanes or droughts. Anthropogenic impacts affecting hydrology of freshwater systems may exacerbate saltwater intrusion into freshwater habitats. The endocrine system of alligators is susceptible to changes in the environment but it is currently not known how the crocodilian physiological system responds to environmental stressors such as salinity. Juvenile alligators were exposed to 12‰ saltwater for 5 weeks to determine effects of chronic exposure to saline environments...
May 18, 2018: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29776756/sex-hormone-binding-globulin-is-a-biomarker-associated-with-nonvertebral-fracture-in-men-on-dialysis-therapy
#16
Jasna Aleksova, Phillip Wong, Robert McLachlan, Kay Weng Choy, Peter R Ebeling, Frances Milat, Grahame J Elder
Gonadal hormones impact bone health and higher values of sex hormone-binding globulin (SHBG) have been independently associated with fracture risk in men without chronic kidney disease. People with chronic kidney disease have a greatly increased fracture risk, and gonadal dysfunction is common in men receiving dialysis treatment. Nevertheless, in these men the effect of gonadal steroids and SHBG on bone mineral density (BMD) and fracture risk is unknown. Here we investigate relationships between gonadal steroids, SHBG, BMD and fracture in men on long-term dialysis therapy, awaiting kidney or simultaneous pancreas kidney transplantation...
May 15, 2018: Kidney International
https://www.readbyqxmd.com/read/29774795/prospective-evaluation-of-hypogonadism-in-male-metastatic-renal-cell-carcinoma-patients-treated-with-targeted-therapies
#17
Julie Bastin, Emilie Werbrouck, Annelies Verbiest, Kevin Punie, Oliver Bechter, Sherida Feng Woei-A-Jin, Pascal Wolter, Hans Wildiers, Evelyne Lerut, Herlinde Dumez, Brigitte Decallonne, Paul Clement, Dirk Vanderschueren, Maarten Albersen, Raymond Oyen, Patrick Schöffski, Benoit Beuselinck
Objectives To study the prevalence of hypogonadism in male patients with metastatic renal cell carcinoma (mRCC) starting with targeted therapies and the impact of the vascular endothelial growth factor receptor tyrosine kinase inhibitors (VEGFR-TKIs) sunitinib and pazopanib on the luteinizing hormone (LH)/testosterone (TT)-axis. Methods Male mRCC patients starting with targeted therapies were prospectively included in this study. TT- and LH-levels were sampled at start as well as during systemic therapy. Endpoints of the study were gonadal status (TT- and LH-levels) at start of targeted therapy and TT- and LH-evolution during targeted therapy...
May 18, 2018: Acta Clinica Belgica
https://www.readbyqxmd.com/read/29774669/obstructive-sleep-apnea-and-testosterone-deficiency
#18
REVIEW
Sung Dong Kim, Kyu Sup Cho
Obstructive sleep apnea (OSA) is a common disorder characterized by intermittent hypoxia and sleep fragmentation. OSA in middle-aged men is often associated with decreased testosterone secretion, together with obesity and aging. Although OSA treatment does not reliably increase testosterone levels in most studies, OSA treatment with testosterone replacement therapy (TRT) may not only improve hypogonadism, but can also alleviate erectile/sexual dysfunction. However, because TRT may exacerbate OSA in some patients, patients should be asked about OSA symptoms before and after starting TRT...
May 16, 2018: World Journal of Men's Health
https://www.readbyqxmd.com/read/29774129/combined-abiraterone-acetate-plus-prednisone-salvage-prostate-bed-radiotherapy-and-lh-rh-agonists-carlha-gep12-in-biochemically-relapsing-prostate-cancer-patients-following-prostatectomy-a-phase-i-study-of-the-getug-gep
#19
Stéphane Supiot, Loic Campion, Pascal Pommier, Mélanie Dore, Clément Palpacuer, Séverine Racadot, Emmanuel Rio, Gérard A Milano, Céline Mahier-Ait Oukhatar, Christian Carrie
Background: To establish the maximum tolerated dose of abiraterone acetate plus prednisone (AA) combined with salvage radiotherapy (SRT) and goserelin in a phase 1 study in men with rising PSA following radical prostatectomy. Methods: AA was given during one month before SRT at 1000 mg PO once daily, then 750 mg (Dose Level 1, DL1) or 1000 mg (DL2) during 5 months combined with 6-months goserelin by injection on the first day of irradiation (scheme NEO) or one month before starting SRT (scheme CONCO)...
April 24, 2018: Oncotarget
https://www.readbyqxmd.com/read/29773553/intratumoral-androgen-levels-are-linked-to-tmprss2-erg-fusion-in-prostate-cancer
#20
Matias Knuuttila, Arfa Mehmood, Jenni Mäki-Jouppila, Henrik Ryberg, Pekka Taimen, Juha Knaapila, Otto Ettala, Peter J Bostrom, Claes Ohlsson, Mikko S Venäläinen, Asta Laiho, Laura L Elo, Petra Sipilä, Sari Makela, Matti Poutanen
Intratumoral androgen biosynthesis is one of the mechanisms involved in the progression of prostate cancer, and an important target for novel prostate cancer therapies. Using gas chromatography-tandem mass spectrometry and genome-wide RNA sequencing, we have analyzed androgen concentrations and androgen-regulated gene expression in cancerous and morphologically benign prostate tissue specimens and serum samples obtained from 48 primary prostate cancer patients. Intratumoral DHT concentrations were significantly higher in the cancerous tissues compared to benign prostate (p<0...
May 17, 2018: Endocrine-related Cancer
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