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Oxidative stress and testosterone

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https://www.readbyqxmd.com/read/29777417/effects-of-dietary-microencapsulated-cymbopogon-flexuosus-essential-oil-on-reproductive-related-parameters-in-male-rhamdia-quelen
#1
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/29770471/protective-effects-of-the-hydroalcoholic-extract-of-fumaria-parviflora-on-testicular-injury-induced-by-torsion-detorsion-in-adult-rats
#2
M Shokoohi, H Shoorei, M Soltani, S-H Abtahi-Eivari, R Salimnejad, M Moghimian
This study was designed to determine the effects of daily oral administration (250 mg/kg) of the hydroalcoholic extract of Fumaria parviflora (FP) for 14 days on the sperm parameters, oxidative stress parameters, serum testosterone levels, expression of Bax and Bcl-2 genes, and apoptosis index of germ cells after testicular torsion-detorsion (ischaemia-reperfusion, IR) injury model in rats. Twenty-eight adult male Wistar rats were divided randomly into four groups of seven each: sham operation, torsion-detorsion (TD), TD plus the hydroalcoholic extract FP (TDFP) and only FP without TD application (FP)...
May 16, 2018: Andrologia
https://www.readbyqxmd.com/read/29769123/obesity-impairs-male-fertility-through-long-term-effects-on-spermatogenesis
#3
Yan-Fei Jia, Qian Feng, Zheng-Yan Ge, Ying Guo, Fang Zhou, Kai-Shu Zhang, Xiao-Wei Wang, Wen-Hong Lu, Xiao-Wei Liang, Yi-Qun Gu
OBJECTIVE: This study aimed to investigate the effect and possible underlying mechanisms of high-fat diet-induced obesity on spermatogenesis in male rats. METHODS: A total of 45 male rats were randomly divided into control (n = 15, normal diet) and obesity groups (n = 30, high-fat diet) and were fed for 16 weeks. Body weight and organ indexes were determined after sacrifice. Indicators of reproductive function, including sperm count, sperm motility, apoptosis of spermatogenic cells, and oxidative stress levels, were measured...
May 16, 2018: BMC Urology
https://www.readbyqxmd.com/read/29766146/the-effect-of-resveratrol-on-oxidative-stress-in-the-liver-and-serum-of-a-rat-model-of-polycystic-ovary-syndrome-an-experimental-study
#4
Mahnaz Ghowsi, Homayoun Khazali, Sajjad Sisakhtnezhad
Background: Studies of oxidative status in polycystic ovarian syndrome (PCOS) patients are limited with inconsistent results. The effects of resveratrol as a natural antioxidant on oxidative status in PCOS aren't clear. Objective: This study evaluated effects of resveratrol on oxidative stress in the liver and serum of the PCOS rats. Materials and Methods: Fifteen female Wistar rats (3 wk old) were divided into 3 groups (n=5/each e): Control group, PCO-Control group, and PCO-Resveratrol group...
March 2018: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/29759042/melatonin-prevents-and-ameliorates-lead-induced-gonadotoxicity-through-antioxidative-and-hormonal-mechanisms
#5
Luqman Aribidesi Olayaki, Isiaka Abdullateef Alagbonsi, Amin Halimat Abdulrahim, Wale Johnson Adeyemi, Muftiat Bakare, Noah Omeiza
We investigated the effects of melatonin on sperm parameters and some biochemical markers in lead-exposed male Wistar rats. Lead (50 mg/kg bw/day) and/or melatonin (4 mg/kg or 10 mg/kg bw/day) was administered for 4 weeks, while 2-week lead exposure was preceded by or followed by 2-week treatment with both doses of melatonin in other groups. Lead reduced glutathione, catalase, adjusted testes weight, semen parameters but did not change malondialdehyde (MDA), superoxide dismutase (SOD), glutathione peroxidase, and total antioxidant capacity...
January 1, 2018: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29744903/effects-of-astaxanthin-on-biochemical-and-histopathological-parameters-related-to-oxidative-stress-on-testes-of-rats-on-high-fructose-regime
#6
E Dokumacioglu, H Iskender, G Yenice, K A T Kapakin, C Sevim, A Hayirli, S Saral, S Comakli
Astaxanthin (ASX) is a xanthophyll family of hydroxycarotenoids which contains several double bonds. It is produced by Haemococcus pluvialis, a microalgae and possesses antioxidant and anti-inflammatory properties. The aim of this study was to test whether ASX could protect against oxidative damage in the testicular tissues of rats receiving high fructose. The rats (n = 24) were randomly divided into two main groups: control and fructose (30%, via drinking water) and then each main group either not supplemented or supplemented with ASX (1 mg kg-1 day-1 , within 0...
May 9, 2018: Andrologia
https://www.readbyqxmd.com/read/29734926/parastar-insecticide-induced-changes-in-reproductive-parameters-and-testicular-oxidative-stress-biomarkers-in-wistar-male-rats
#7
Edouard Akono Nantia, Antoine S Kada, Faustin Pt Manfo, Nehemiah N Tangu, Kaghou M Mbifung, Desire H Mbouobda, Augustave Kenfack
Parastar is an insecticide formulation of lambda-cyhalothrin and imidacloprid, and it is largely used for crop production improvement in Santa, North West Region of Cameroon. This study aimed at evaluating the effects of Parastar on reproductive parameters and testicular oxidative stress in adult albino Wistar male rats. Twenty rats (154 g ± 28 g) were divided into four groups of five animals each and treated daily with either distilled water (10 mL/kg), 1.25, 2.49 or 6.23 mg/kg of Parastar, respectively, for 35 days...
January 1, 2018: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29733810/testosterone-alleviates-mitochondrial-ros-accumulation-and-mitochondria-mediated-apoptosis-in-the-gastric-mucosa-of-orchiectomized-rats
#8
Jie Kang, Zhenhua Jia, Yang Ping, Zengxiang Liu, Xiaohong Yan, Guozhang Xing, Wensheng Yan
The effects of testosterone propionate (TP) on the oxidative stress and mitochondrial function, as well as on mitochondria associated apoptotic signaling, were analyzed in the gastric mucosa in orchiectomized male rats. The present study showed that testosterone deficiency triggered apoptosis by damaging the mitochondrial function (ROS overload generation, membrane potential loss, ATP depletion, etc.), increasing both the release of mitochondrial cytochrome c (Cyt c) and the Bax/Bcl-2 ratio, and activating caspase-9 and caspase-3...
May 4, 2018: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/29727961/pyrethroid-insecticide-lambda-cyhalothrin-induces-hepatic-cytochrome-p450-enzymes-oxidative-stress-and-apoptosis-in-rats
#9
María-Aránzazu Martínez, Irma Ares, José-Luis Rodríguez, Marta Martínez, David Roura-Martínez, Victor Castellano, Bernardo Lopez-Torres, María-Rosa Martínez-Larrañaga, Arturo Anadón
This study aimed to examine in rats the effects of the Type II pyrethroid lambda-cyhalothrin on hepatic microsomal cytochrome P450 (CYP) isoform activities, oxidative stress markers, gene expression of proinflammatory, oxidative stress and apoptosis mediators, and CYP isoform gene expression and metabolism phase I enzyme PCR array analysis. Lambda-cyhalothrin, at oral doses of 1, 2, 4 and 8mg/kg bw for 6days, increased, in a dose-dependent manner, hepatic activities of ethoxyresorufin O-deethylase (CYP1A1), methoxyresorufin O-demethylase (CYP1A2), pentoxyresorufin O-depentylase (CYP2B1/2), testosterone 7α- (CYP2A1), 16β- (CYP2B1), and 6β-hydroxylase (CYP3A1/2), and lauric acid 11- and 12-hydroxylase (CYP4A1/2)...
August 1, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29726665/-protective-effect-of-qilin-pills-on-the-reproductive-function-of-oligoasthenospermia-rats
#10
Kai-Shu Zhang, Fang Zhou, Qi An, Yan-Fei Jia, Long-Long Fu, Wen-Hong Lu, Xiao-Wei Liang, Xue-Jun Shang, Yi-Qun Gu
Objective: To study the protective effect of Qilin Pills (QLP) on the reproductive function of rats with oligoasthenospermia (OAS) induced by tripterygium glycosides. METHODS: Twenty-eight male SD rats were randomly divided into a normal control, an OAS model control, a low-dose QLP, and a high-dose QLP group of equal number. OAS models were made in the latter three groups by intragastrical administration of tripterygium glycosides at 40 mg per kg of the body weight per day, and meanwhile the animals in the low- and high-dose QLP groups were treated with QLP at 1...
September 2017: Zhonghua Nan Ke Xue, National Journal of Andrology
https://www.readbyqxmd.com/read/29713278/dehydroepiandrosterone-antagonizes-pain-stress-induced-suppression-of-testosterone-production-in-male-rats
#11
Qiqi Zhu, Fei Ge, Xiaoheng Li, Hou-Sheng Deng, Miao Xu, Tiao Bu, Jingyang Li, Yiyan Wang, Yuanyuan Shan, Ren-Shan Ge, Ming Yao
Background: Leydig cells secrete the steroid hormone, testosterone, which is essential for male fertility and reproductive health. Stress increases the secretion of glucocorticoid [corticosterone, (CORT) in rats] that decreases circulating testosterone levels in part through a direct action on its receptors in Leydig cells. Intratesticular CORT level is dependent on oxidative inactivation of CORT by 11β-hydroxysteroid dehydrogenase 1 (HSD11B1) in rat Leydig cells. Pain may cause the stress, thus affecting testosterone production in Leydig cells...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29710542/dose-dependent-ameliorative-effects-of-quercetin-and-l-carnitine-against-atrazine-induced-reproductive-toxicity-in-adult-male-albino-rats
#12
Rabie L Abdel Aziz, Ahmed Abdel-Wahab, Fatma I Abo El-Ela, Nour El-Houda Y Hassan, El-Shaymaa El-Nahass, Marwa A Ibrahim, Abdel-Tawab A Y Khalil
This study aimed to determine the protective effects of co-administration of Quercetin (QT) or l-Carnitine (LC) against the oxidative stress induced by Atrazine (ATZ) in the reproductive system of intact male Albino rats. 36 rats were divided equally into 6 groups. Rats in the control negative "CNT" group received 1.5 ml distilled water for 21 days. All rats in the other groups received ATZ (120 mg/kg bw) through gavage. Groups 3 and 4 were co-administered with either low or high dose of QT (10 "ATZLQT" and 50 "ATZHQT" mg/kg bw, respectively)...
March 30, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29704577/food-drug-interaction-anabolic-steroids-aggravate-hepatic-lipotoxicity-and-nonalcoholic-fatty-liver-disease-induced-by-trans-fatty-acids
#13
Jamili D B Santos, Andrea A S Mendonça, Rafaela C Sousa, Thaiany G S Silva, Solange M Bigonha, Eliziária C Santos, Reggiani V Gonçalves, Romulo D Novaes
Remains unknown if dietary lipids and anabolic steroids (AS) can interact to modify energy metabolism, hepatic structure and function. We investigated the impact of AS on gene expression, lipid profile, redox status and the development of nonalcoholic fatty liver disease (NAFLD) in mice treated with a diet rich in trans fatty acids. Seventy-two C57BL/6 mice were equally randomized into six groups and treated with a standard diet (SD) or high-fat diet (HFD) alone or combined with testosterone cypionate (10 or 20 mg/kg) for 12 weeks...
April 25, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29687464/protective-effects-of-sea-cucumber-holothuria-atra-extract-on-testicular-dysfunction-induced-by-immune-suppressant-drugs-in-wistar-rats
#14
D Y Saad, M M Soliman, A A Mohamed, G B Youssef
The current study was aimed to evaluate the protective effect of Holothurian atra (HA) extract; naturally occurring marine resource, against methotrexate (MTX) induced testicular dysfunction. Mature rats received either MTX (20 mg/kg, intraperitoneally) or saline on the 7th day of experiment al design. Seven days prior and after MTX-injection, rats received HA at dose of 300 mg/kg intragastrically (HA + MTX group; HA group alone). Serum was extracted and testicular tissues were examined for the changes in serum biochemistry (liver & kidney biomarkers, testicular hormones and antioxidants), molecular and histopthological alterations using RT-PCR and immunohistochemistry...
April 23, 2018: Andrologia
https://www.readbyqxmd.com/read/29683243/protective-effects-of-camel-whey-protein-against-scrotal-heat-mediated-damage-and-infertility-in-the-mouse-testis-through-yap-nrf2-and-ppar-gamma-signaling-pathways
#15
Gamal Badr, Hanem S Abdel-Tawab, Nancy K Ramadan, Samia F Ahmed, Mohamed H Mahmoud
Elevation of scrotal temperature is one of the most important causes of impaired spermatogenesis and male infertility, but the exact mechanism remains controversial. The present study investigated the impact of camel whey protein (CWP) on the mechanisms of heat stress (HS)-mediated testicular damage in male mice. Exposure to HS was associated with significant increase in the testicular tissues' oxidative stress. Mechanistically, exposure to HS resulted in upregulation of P53 and Nrf2 expressions; downregulation of Bcl2 and PPAR-γ expressions; and induction of testicular Leydig cell hyperplasia...
April 23, 2018: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/29679313/effects-of-different-natural-extracts-in-an-experimental-model-of-benign-prostatic-hyperplasia-bph
#16
Irene Paterniti, Michela Campolo, Marika Cordaro, Rosalba Siracusa, Antonio Filippone, Emanuela Esposito, Salvatore Cuzzocrea
OBJECTIVE AND DESIGN: To characterize the impact of inflammatory process and oxidative stress in the degree of benign prostatic hyperplasia (BPH), a common condition in which chronic inflammation plays a crucial role, we investigated the effect of different plant extract preparations in an in vivo model of BPH as new therapeutic target. MATERIAL: BPH was made in rats with daily administration of testosterone propionate (3 mg/kg) for 14 days. TREATMENT: Rats were randomized into different groups to receive oral administration of plant extract preparations: Serenoa repens with selenium (SeR 28...
April 20, 2018: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/29664663/effects-of-probiotic-supplementation-on-hormonal-profiles-biomarkers-of-inflammation-and-oxidative-stress-in-women-with-polycystic-ovary-syndrome-a-randomized-double-blind-placebo-controlled-trial
#17
Maryam Karamali, Sara Eghbalpour, Sajad Rajabi, Mehri Jamilian, Fereshteh Bahmani, Maryam Tajabadi-Ebrahimi, Fariba Keneshlou, Seyyed Mehdi Mirhashemi, Maryam Chamani, Sara Hashem Gelougerdi, Zatollah Asemi
BACKGROUND: To the best of our knowledge, data on effects of probiotic administration on hormonal profiles, biomarkers of inflammation and oxidative stress in women with polycystic ovary syndrome (PCOS) are scarce. This investigation was conducted to assess the effects of probiotic supplementation on hormonal profiles, biomarkers of inflammation and oxidative stress in women with PCOS. METHODS: This randomized, double-blind, placebo-controlled trial was conducted on 60 women with PCOS, aged 18-40 years old...
January 1, 2018: Archives of Iranian Medicine
https://www.readbyqxmd.com/read/29663635/di-2-ethylhexyl-phthalate-dehp-induced-testicular-toxicity-through-nrf2-mediated-notch1-signaling-pathway-in-sprague-dawley-rats
#18
Xiangliang Tang, Shengde Wu, Lianju Shen, Yi Wei, Xining Cao, Yangcai Wang, Chunlan Long, Yue Zhou, Dian Li, Fangyuan Huang, Bo Liu, Guanghui Wei
Di-(2-ethylhexyl) phthalate (DEHP) is an environmental endocrine disruptor widely used in China that is harmful to the male reproductive system. Many studies have shown that DEHP causes testicular toxicity through oxidative stress, but the specific mechanism is unknown. Because the Notch pathway is a key mechanism for regulating cell growth and proliferation, we investigated whether Notch is involved in DEHP-induced testicular toxicity and whether vitamins E and C could rescue testicular impairment in Sprague-Dawley (SD) rats...
April 16, 2018: Environmental Toxicology
https://www.readbyqxmd.com/read/29642620/rhodobacter-sphaeroides-extract-lycogen%C3%A2-attenuates-testosterone-induced-benign-prostate-hyperplasia-in-rats
#19
Chiang-Ting Wang, Ya-Yun Wang, Wen-Sheng Liu, Chun-Ming Cheng, Kuo-Hsun Chiu, Li-Lian Liu, Xue-Zhu Liu, Zhi-Hong Wen, Ya-Huey Chen, Tsung-Ming Chen
Benign prostate hyperplasia (BPH) is one of the most common urological problems in mid-aged to elderly men. Risk factors of BPH include family history, obesity, type 2 diabetes, and high oxidative stress. The main medication classes for BPH management are alpha blockers and 5α-reductase inhibitors. However, these conventional medicines cause adverse effects. Lycogen™, extracted from Rhodobacter sphaeroides WL-APD911, is an anti-oxidant and anti-inflammatory compound. In this study, the effect of Lycogen™ was evaluated in rats with testosterone-induced benign prostate hyperplasia (BPH)...
April 10, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29621673/part-b-morphometric-and-transcriptomic-responses-to-sub-chronic-exposure-to-the-polycyclic-aromatic-hydrocarbon-phenanthrene-in-the-fathead-minnow-pimephales-promelas
#20
Jennifer R Loughery, Karen A Kidd, Angella Mercer, Chris J Martyniuk
Phenanthrene is a tricyclic polycyclic aromatic hydrocarbon and environmental contaminant found in high concentrations around urban catchments and in the vicinity of oil extraction activities. Fish exposed to phenanthrene can exhibit altered reproductive hormone profiles and/or differences within gonadosomatic index and altered gamete proportions, but the mechanisms underlying these changes are not fully understood. In this study, we conducted a sub-chronic bioassay and measured transcriptional responses in the liver, the major tissue involved in generating lipids for oocyte growth...
March 23, 2018: Aquatic Toxicology
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