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https://www.readbyqxmd.com/read/28635608/the-protective-role-of-folic-acid-against-testicular-dysfunction-in-lead-intoxicated-rat-model
#1
Asmaa Ms Gomaa, Nasser S Abou Khalil, Mohammed A Abdel-Ghani
There is an increasing concern over male reproductive toxicity caused by lead exposure. Folic acid (FA) is supposed to be a promising therapeutic strategy against lead toxicity. Therefore, the aim of this experimental study was to shed light on the potential protective role of FA on lead-induced testicular dysfunction in rats and its possible underlying mechanistic pathways. Rats (n = 24) were divided into four groups: Control, FA, Lead, and FA+Lead group. After 4 weeks, lead intoxication resulted in a marked reduction in the relative testicular weight and the serum level of testosterone, an impairment in the characters of semen analysis, and an increased content of lead, malondialdehyde and both interleukin-6 and -10 and a decreased antioxidant enzyme levels in the testicular tissue homogenate...
July 2017: General Physiology and Biophysics
https://www.readbyqxmd.com/read/28634006/testosterone-differentially-affects-t-cells-and-neurons-in-murine-and-human-models-of-neuroinflammation-and-neurodegeneration
#2
Megan G Massa, Christina David, Stefanie Jörg, Johannes Berg, Barbara Gisevius, Sarah Hirschberg, Ralf A Linker, Ralf Gold, Aiden Haghikia
The high female-to-male sex ratio of multiple sclerosis (MS) prevalence has continuously confounded researchers, especially in light of male patients' accelerated disease course at later stages of MS. Although multiple studies have concentrated on estrogenic mechanisms of disease modulation, fairly little attention has been paid to androgenic effects in a female system, and even fewer studies have attempted to dissociate hormonal effects on the neurodegenerative and neuroinflammatory processes of MS. Herein, we demonstrate the differential effects of hormone treatment on the acute inflammatory and chronic neurodegenerative phases of murine experimental autoimmune encephalomyelitis...
July 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28632494/long-term-dutasteride-therapy-in-men-with-benign-prostatic-hyperplasia-alters-glucose-and-lipid-profiles-and-increases-severity-of-erectile-dysfunction
#3
Abdulmaged Traish, Karim Sultan Haider, Gheorghe Doros, Ahmad Haider
Background Dutasteride has been successfully used in treatment of lower urinary tract symptoms (LUTS) secondary to benign prostatic hyperplasia (BPH). However, dutasteride inhibits 5α-reductase type 1 and type 2 enzymes and may compromises glucocorticoids and androgen metabolism and alters metabolic function resulting in undesirable metabolic and sexual adverse side effects. Aim The aim of this study was to investigate the long-term adverse effects of dutasteride therapy in men with BPH on: i) blood glucose, ii) glycated hemoglobin (HbA1c), iii) low density lipoprotein-cholesterol (LDL-C); high density lipoprotein-cholesterol (HDL-C) and total cholesterol (TC), iv) testosterone (T), v) liver alanine and aspartate aminotransferases (ALT and AST) and vi) erectile dysfunction (ED)...
June 21, 2017: Hormone Molecular Biology and Clinical Investigation
https://www.readbyqxmd.com/read/28627666/expression-pattern-of-zinc-finger-protein-185-in-mouse-testis-and-its-role-in-regulation-of-testosterone-secretion
#4
Xinguo You, Lu Wei, Shutong Fan, Weiwei Yang, Xiaoying Liu, Guohui Wang, Yi Man, Zhifang Pan, Weiguo Feng
Zinc finger protein 185 (ZNF185) belongs to the ZNF family and is involved in cell proliferation and differentiation. To the best of our knowledge, the association between ZNF185 and male reproduction is unknown. In the present study, the expression and localization of ZNF185 in mouse testis, as well as its role in testosterone secretion, cell cycle progression and apoptosis of mouse Leydig cells were investigated. The results of the immunofluorescence analysis indicated that ZNF185 was highly expressed in Leydig cells of the mouse testis, and primarily localized in the cytoplasm...
June 16, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28626636/an-examination-of-endoparasites-and-fecal-testosterone-levels-in-flying-squirrels-glaucomys-spp-using-high-performance-liquid-chromatography-ultra-violet-hplc-uv
#5
Sarah N Waksmonski, Justin M Huffman, Carolyn G Mahan, Michael A Steele
The immuno-competence hypothesis proposes that higher levels of testosterone increases the susceptibility to parasitism. Here we examined the testosterone levels in two species of flying squirrels (Glaucomys): one known to regularly host a nematode species (Strongyloides robustus) without ill effects (G. volans) and a closely related species that is considered negatively affected by the parasite. We quantified fecal testosterone levels in northern and southern flying squirrels (G. sabrinus, G. volans) with high-performance liquid chromatography-ultraviolet spectroscopy (HPLC-UV), and compared levels to endoparasites detected in individual squirrels...
August 2017: International Journal for Parasitology. Parasites and Wildlife
https://www.readbyqxmd.com/read/28624941/does-static-electric-field-from-ultra-high-voltage-direct-current-transmission-lines-affect-male-reproductive-capacity-evidence-from-a-laboratory-study-on-male-mice
#6
Sixia Wu, Guoqing Di, Zhengguang Li
With the development of ultra-high-voltage direct-current (UHVDC) transmission technology and increase in transmission voltage, the issue of environmental static electric field (SEF) pollution is standing out and its possible health effects have caused much public attention. In this study, the effects of chronic exposure to SEF on reproductive capacity of male mice were investigated. Twenty Institute of Cancer Research (ICR) mice were exposed to SEF (56.3 ± 1.4 kV/m, 49 days) generated by a high-voltage device...
June 17, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28612285/non-alcoholic-fatty-liver-disease-in-women-with-polycystic-ovary-syndrome-systematic-review-and-meta-analysis
#7
REVIEW
A L L Rocha, L C Faria, T C M Guimarães, G V Moreira, A L Cândido, C A Couto, F M Reis
PURPOSE: Non-alcoholic fatty liver disease (NAFLD) is an insidious pathologic condition that can manifest from simple steatosis to steatohepatitis (NASH) with potential progression to cirrhosis. Like the polycystic ovary syndrome (PCOS), NAFLD is associated with obesity, diabetes mellitus, insulin resistance and metabolic syndrome. PCOS women have an increased risk of NAFLD, but it is debatable which features of PCOS, either specific (androgen excess) or unspecific (metabolic derangements) affect the NAFLD risk...
June 13, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28609023/relations-of-sex-hormone-levels-to-leukocyte-telomere-length-in-black-hispanic-and-asian-pacific-islander-postmenopausal-women
#8
Yan Song, Michele Cho, Kathleen Brennan, Brian H Chen, Yiqing Song, JoAnn E Manson, Andrea L Hevener, Nai-Chieh Y You, Anthony W Butch, Simin Liu
BACKGROUND: Sex hormones may play important roles in sex-specific biological aging. We specifically examined the associations between circulating concentrations of sex hormones and leukocyte telomere length (TL). METHODS: We conducted a cross-sectional study of 1124 black, 444 Hispanic, and 289 Asian/Pacific Islander women in the Women's Health Initiative Observational Cohort. Concentrations of estradiol and testosterone were measured using electrochemiluminescence immunoassays...
June 13, 2017: Journal of Diabetes
https://www.readbyqxmd.com/read/28607572/gastrodia-elata-blume-rhizome-aqueous-extract-improves-arterial-thrombosis-dyslipidemia-and-insulin-response-in-testosterone-deficient-rats
#9
Min Jung Kim, Hye Jeong Yang, Bo Reum Moon, Ji Eun Kim, Kang Sung Kim, Sunmin Park
Testosterone deficiency deteriorates glucose and lipid metabolism with reducing muscle mass. We investigated whether the consumption of water extracts of Gastrodia elata Blume rhizome (GEB) rich in gastrodin would reduce the symptoms of testosterone deficiency and improve blood flow in orchidectomized (ORX) rats. ORX rats were given high-fat diets supplemented with either 1% cellulose (ORX-control), 0.3% GEB (GEB-L), or 1% GEB (GEB-H) for 8 weeks. Sham-operated rats were fed the same diet as OVX-control rats (normal-control)...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28602191/an-improved-spe-lc-ms-ms-method-for-multiclass-endocrine-disrupting-compound-determination-in-tropical-estuarine-sediments
#10
Tuan Fauzan Tuan Omar, Ahmad Zaharin Aris, Fatimah Md Yusoff, Shuhaimi Mustafa
Estuary sediments are one of the important components of coastal ecosystems and have been regarded as a sink for various types of organic pollutants. Organic pollutants such as endocrine disrupting compounds (EDCs) which have been associated with various environmental and human health effects were detected in the estuary sediment at trace level. Considering various interferences that may exist in the estuarine sediment, a sensitive and selective method, capable of detecting multiclass EDC pollutants at the trace levels, needs to be developed and optimized to be applied for environmental analysis...
October 1, 2017: Talanta
https://www.readbyqxmd.com/read/28601363/evaluation-of-uncertainty-sources-in-the-determination-of-testosterone-in-urine-by-calibration-based-and-isotope-dilution-quantification-using-ultra-high-performance-liquid-chromatography-tandem-mass-spectrometry
#11
J Pitarch-Motellón, A F Roig-Navarro, J V Sancho, M Ibáñez, N Fabregat-Cabello, O J Pozo, Rosa Ventura, J I García Alonso, Pablo Rodríguez-González, Adriana González Gago, Amaia Ereño Artabe, Peter Van Eenoo, Koen Deventer, Yvette Dehnes, Sebastian Rzeppa
Three quantification methodologies, namely calibration with internal standard (Cal-IS, non-weighted), weighted calibration with internal standard (wCal-IS) and isotope pattern deconvolution (IPD) have been used for the determination of testosterone in urine by LC-MS/MS. Uncertainty has been calculated and compared for the three methodologies through intra- and inter-laboratory reproducibility assays. IPD showed the best performance for the intra-laboratory reproducibility, with RSD and combined uncertainty values below 4% and 9% respectively...
June 3, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28598709/an-association-between-bone-mineral-density-and-anabolic-hormones-in-middle-aged-and-elderly-men-with-prediabetes
#12
Michał Rabijewski, Lucyna Papierska, Paweł Piątkiewicz
INTRODUCTION: Prediabetes (PD) leads to reduced testosterone (T) in males, but the association between the anabolic hormones and bone mineral density (BMD) remains unknown. OBJECTIVES: We investigated an association between the anabolic hormones and BMD in middle-aged and elderly men with PD. METHODS: We investigated 84 prediabetic and 56 control men. Total T (TT), calculated free T (cFT), and dehydroepiandrosterone sulfate (DHEAS) were measured, and BMD was assessed using DXA methods...
June 9, 2017: Aging Male: the Official Journal of the International Society for the Study of the Aging Male
https://www.readbyqxmd.com/read/28598268/effects-of-pulmonary-exposure-to-chemically-distinct-welding-fumes-on-neuroendocrine-markers-of-toxicity
#13
K Krajnak, K Sriram, C Johnson, J R Roberts, R Mercer, G R Miller, O Wirth, J M Antonini
Exposure to welding fumes may result in disorders of the pulmonary, cardiovascular, and reproductive systems. Welders are also at a greater risk of developing symptoms similar to those seen in individuals with idiopathic Parkinson's disease. In welders, there are studies that suggest that alterations in circulating prolactin concentrations may be indicative of injury to the dopamine (DA) neurons in the substantia nigra. The goal of these studies was to use an established model of welding particulate exposure to mimic the effects of welding fume inhalation on reproductive functions...
June 9, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28593169/atherosclerosis-is-associated-with-erectile-function-and-lower-urinary-tract-symptoms-especially-nocturia-in-middle-aged-men
#14
Akira Tsujimura, Ippei Hiramatsu, Yusuke Aoki, Hirofumi Shimoyama, Taiki Mizuno, Taiji Nozaki, Masato Shirai, Kazuhiro Kobayashi, Yoshiaki Kumamoto, Shigeo Horie
BACKGROUND: Atherosclerosis is a systematic disease in which plaque builds up inside the arteries that can lead to serious problems related to quality of life (QOL). Lower urinary tract symptoms (LUTS), erectile dysfunction (ED), and late-onset hypogonadism (LOH) are highly prevalent in aging men and are significantly associated with a reduced QOL. However, few questionnaire-based studies have fully examined the relation between atherosclerosis and several urological symptoms. MATERIALS AND METHODS: The study comprised 303 outpatients who visited our clinic with symptoms of LOH...
June 2017: Prostate International
https://www.readbyqxmd.com/read/28591643/female-choice-male-dominance-and-condition-related-traits-in-the-polygynous-subterranean-rodent-ctenomys-talarum
#15
M S Fanjul, R R Zenuto
Ctenomys talarum is a solitary and highly territorial species in which dominant males aggressively deter other males and monopolize reproductive activity. Female preference for dominant males is not easy to assess due to coercive mating by males. Hence, we aimed to answer if behavioural dominance and several condition-related traits like testosterone and cortisol levels, endoparasite load, and hematocrit volume may affect female preference when they have the opportunity to exert it. We designed a laboratory experiment using wild-caught C...
June 4, 2017: Behavioural Processes
https://www.readbyqxmd.com/read/28582396/participation-of-androgen-and-its-receptor-in-sex-determination-of-an-amphibian-species
#16
Akira Oike, Maho Kodama, Shigeki Yasumasu, Takashi Yamamoto, Yoriko Nakamura, Etsuro Ito, Masahisa Nakamura
INTRODUCTION: In the Japanese frog Rana (R.) rugosa the androgen receptor (AR) gene on the W chromosome (W-AR) is barely expressed. Previously we showed that incomplete female-to-male sex-reversal occurred in Z-AR transgenic female frogs. To date, however, there is no report showing that AR with androgens can determine genetically programed male sex fate in any vertebrate species. Here, we examined whether AR together with androgens functions as a sex determinant in an amphibian species...
2017: PloS One
https://www.readbyqxmd.com/read/28581652/adolescent-personality-as-risk-and-resiliency-in-the-testosterone-externalizing-association
#17
Kathleen W Reardon, Kathrin Herzhoff, Jennifer L Tackett
Previous investigations of testosterone and externalizing behavior have provided mixed findings. We tested the hypothesis that self-regulatory personality moderates the testosterone-externalizing behavior association in adolescence. Parents reported on their 13- to 18-year-old (N = 106, Mage = 16.01, SD = 1.29) children's personalities and psychopathology. Testosterone was measured via drool samples. As hypothesized, personality moderated the testosterone-externalizing behavior association. High testosterone predicted higher levels of externalizing behaviors, but only for adolescents low in Agreeableness and Conscientiousness...
September 2016: Journal of Research on Adolescence: the Official Journal of the Society for Research on Adolescence
https://www.readbyqxmd.com/read/28581026/cross-sectional-association-between-testosterone-sex-hormone-binding-globulin-and-metabolic-syndrome-the-healthy-twin-study
#18
Heesun Moon, Inyoung Choi, Somi Kim, Hyeonyoung Ko, Jinyoung Shin, Kayoung Lee, Joohon Sung, Yun-Mi Song
OBJECTIVES: This study evaluated an association between testosterone, sex hormone-binding globulin (SHBG) and metabolic syndrome (MetS).We also evaluated the genetic and environmental influence on the association. DESIGN: Cross-sectional. SETTING: Community-based study. PARTICIPANTS: A total of 1,098 Korean adult men including 139 monozygotic twin pairs. MAIN OUTCOME MEASURE: MetS was defined using the National Cholesterol Education Program-Third Adult Treatment Panel (NCEP-ATP III) and International Diabetes Federation (IDF) criteria...
June 5, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28580402/bone-microstructure-in-men-assessed-by-hr-pqct-associations-with-risk-factors-and-differences-between-men-with-normal-low-and-osteoporosis-range-areal-bmd
#19
Narihiro Okazaki, Andrew J Burghardt, Ko Chiba, Anne L Schafer, Sharmila Majumdar
PURPOSE: The primary objective of this study was to analyze the relationships between bone microstructure and strength, and male osteoporosis risk factors including age, body mass index, serum 25-hydroxyvitamin D level, and testosterone level. A secondary objective was to compare microstructural and strength parameters between men with normal, low, and osteoporosis-range areal bone mineral density (aBMD). METHODS: Seventy-eight healthy male volunteers (mean age 62...
December 2016: Bone Reports
https://www.readbyqxmd.com/read/28580147/the-quantification-of-reproductive-hormones-in-the-hair-of-captive-adult-brown-bears-and-their-application-as-indicators-of-sex-and-reproductive-state
#20
Marc Cattet, Gordon B Stenhouse, David M Janz, Luciene Kapronczai, Joy Anne Erlenbach, Heiko T Jansen, O Lynne Nelson, Charles T Robbins, John Boulanger
Recognizing the potential value of steroid hormone measurements to augment non-invasive genetic sampling, we developed procedures based on enzyme-linked immunoassays to quantify reproductive steroid hormone concentrations in brown bear (Ursus arctos) hair. Then, using 94 hair samples collected from eight captive adult bears over a 2-year period, we evaluated (i) associations between hair concentrations of testosterone, progesterone, estradiol and cortisol; (ii) the effect of collecting by shaving vs. plucking; and (iii) the utility of reproductive hormone profiles to differentiate sex and reproductive state...
2017: Conservation Physiology
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