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Oxidative stress and testosterone

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https://www.readbyqxmd.com/read/28212445/long-term-effects-of-fetal-undernutrition-on-rat-heart-role-of-hypertension-and-oxidative-stress
#1
Pilar Rodríguez-Rodríguez, Angel L López de Pablo, Concha F García-Prieto, Beatriz Somoza, Begoña Quintana-Villamandos, José J Gómez de Diego, Perla Y Gutierrez-Arzapalo, David Ramiro-Cortijo, M Carmen González, Silvia M Arribas
BACKGROUND AND AIMS: Fetal undernutrition is a risk factor for heart disease in both genders, despite the protection of women against hypertension development. Using a rat model of maternal undernutrition (MUN) we aimed to assess possible sex differences in the development of cardiac alterations and the implication of hypertension and cardiac oxidative stress. METHODS: Male and female offspring from rats fed ad libitum (control) or with 50% of the normal daily intake during the second half of gestation (MUN) were used...
2017: PloS One
https://www.readbyqxmd.com/read/28193304/physiological-response-and-semen-quality-of-rabbit-bucks-supplemented-with-moringa-leaves-ethanolic-extract-during-summer-season
#2
N I El-Desoky, N M Hashem, A Elkomy, Z R Abo-Elezz
Exposure of rabbit bucks to summer heat stress reduces their homeostasis and semen quality leading to a temporal subfertility. The potentiality of ethanolic extract of Moringa oleifera leaves (M. oleifera ethanolic extract (MLEE)) to reduce negative impacts of heat stress on physiological and semen quality traits was investigated. A total of 28 adult V-line rabbit bucks were randomly distributed among four experimental groups of seven rabbits each. The first group received water (placebo) and served as a control (M0)...
February 14, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28185602/impaired-hypothalamic-pituitary-testicular-axis-activity-spermatogenesis-and-sperm-function-promote-infertility-in-males-with-lead-poisoning
#3
Jason Gandhi, Rafael J Hernandez, Andrew Chen, Noel L Smith, Yefim R Sheynkin, Gargi Joshi, Sardar Ali Khan
Lead poisoning is a stealthy threat to human physiological systems as chronic exposure can remain asymptomatic for long periods of time before symptoms manifest. We presently review the biophysical mechanisms of lead poisoning that contribute to male infertility. Environmental and occupational exposure of lead may adversely affect the hypothalamic-pituitary-testicular axis, impairing the induction of spermatogenesis. Dysfunction at the reproductive axis, namely testosterone suppression, is most susceptible and irreversible during pubertal development...
February 10, 2017: Zygote: the Biology of Gametes and Early Embryos
https://www.readbyqxmd.com/read/28166954/impacts-of-dose-and-time-of-boldenone-and-stanazolol-exposure-in-inflammatory-markers-oxidative-and-nitrosative-stress-and-histopathological-changes-in-the-rat-testes
#4
Andressa Bueno, Fabiano B Carvalho, Jessié M Gutierres, Cibele L Lhamas, Indiara Brusco, Sara M Oliveira, Marta G Amaral, Guilherme Dorneles, Juliana Sorraila, Marta M Duarte, Cinthia M de Andrade
The present study was conducted to analyze the adverse effects of the anabolic steroids boldenone (BOL) and stanazolol (ST) in the reproductive function of male rats. These molecules were administered using three different protocols. In Protocol I, BOL and ST were administered in a higher dose than what is recommended but for a short period. In Protocol II, a moderate dose of these compounds was applied for an intermediate period, whereas in Protocol III a reduced dose was administered but for an extended period...
March 1, 2017: Theriogenology
https://www.readbyqxmd.com/read/28166946/preventive-effects-of-supplemental-dietary-zinc-on-heat-induced-damage-in-the-epididymis-of-boars
#5
Zhaojian Li, Yansen Li, Xin Zhou, Yun Cao, Chunmei Li
Hyperthermia in boars reduces growth performance and sperm production. Zinc is an essential trace element in animal nutrition. Here we investigate the effects of dietary zinc on epididymal structure and function in Bama miniature pigs treated with heat exposure and investigate approaches to improve the reproductive performance in summer. Male Bama miniature pigs (n=18; aged 6 months; bodyweight=10.79±0.06kg) were randomly allocated to 3 groups: control group (Control), heat treatment group (HT), and the diet-supplemented and heat treatment group (H+Zn)...
February 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28159593/short-term-oral-exposure-to-low-doses-of-nano-sized-tio2-and-potential-modulatory-effects-on-intestinal-cells
#6
Maria Grazia Ammendolia, Francesca Iosi, Francesca Maranghi, Roberta Tassinari, Francesco Cubadda, Federica Aureli, Andrea Raggi, Fabiana Superti, Alberto Mantovani, Barbara De Berardis
The present study investigated potential modulatory effects of low doses of nano-sized titanium dioxide (TiO2) on intestinal cells in vivo and in vitro. After short-term exposure to TiO2 nanoparticles in rats, histopathological analysis of intestinal tissues indicated a gender-specific effect with increased length of intestinal villi in male rats only. Moreover the intestinal tissue showed nanoparticle deposition as revealed by ICP-MS determination of titanium. Increased serum testosterone levels were also detected...
January 31, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28133775/review-on-arsenic-induced-toxicity-in-male-reproductive-system-and-its-amelioration
#7
REVIEW
M Zubair, M Ahmad, Z I Qureshi
Arsenic is an environmental toxicant which causes mutagenic, teratogenic and carcinogenic defects. It is used as herbicide, fungicide and rodenticide and results in contamination of air, soil and water. Arsenic is also produced through burning of coal industries. The sludge of factories contaminates the fodder and drinking source of water of human and livestock. Arsenic binds thiol groups in tissue proteins and impairs the function of the proteins. This metal affects the mitochondrial enzymes and interrupts the production of energy...
January 30, 2017: Andrologia
https://www.readbyqxmd.com/read/28126675/rutin-attenuates-h2o2-induced-oxidation-damage-and-apoptosis-in-leydig-cells-by-activating-pi3k-akt-signal-pathways
#8
Jianhua Sun, Heng Wang, Bei Liu, Wenhao Shi, Juanzi Shi, Zhou Zhang, Junping Xing
Oxidative stress is a primary factor in the pathology of male infertility. The strong antioxidative capacity of rutin has been proven by numerous studies, but a protective role in the context of male reproduction remains to be elucidated. To explore the biological role of rutin in protecting male reproductive function and the potential underlying mechanism, H2O2-induced Leydig cells were used as a cell model of oxidation damage. Our findings showed that rutin at concentrations of 10, 20, and 40μmol/L remarkably increased cell survival rate of H2O2-induced Leydig cells to 70...
January 23, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28112379/protective-effects-of-physiological-testosterone-on-advanced-glycation-end-product%C3%A2-induced-injury-in-human-endothelial-cells
#9
Yaping Xie, Dan Yu, Jiahua Wu, Lin Li
The effect of testosterone, a sex steroid, on endothelial cells is controversial as it is uncertain if it has a protective effect on them. Whether physiological testosterone can inhibit the deleterious effects of advanced glycation end products (AGEs) on endothelial cells remains to be elucidated. The present study focused on elucidating the effect of testosterone on the injury of endothelial cells induced by AGEs. Human umbilical vein endothelial cells (HUVECs) were cultured in vitro and treated with AGEs in the presence or absence of various concentrations of testosterone...
January 19, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28102007/effects-of-diet-restriction-and-diet-complexity-on-life-history-strategies-in-side-blotched-lizards-uta-stansburiana
#10
Heather M Skinner, Andrew M Durso, Lorin A Neuman-Lee, Susan L Durham, Sarah D Mueller, Susannah S French
Organisms must balance energy invested into self-maintenance, reproduction, and somatic growth over their lifetime. In this study, the effects of diet restriction and diet complexity on side-blotched lizards (Uta stansburiana) were analyzed. Thirty male lizards, housed in the laboratory, were fed either an ad libitum or a restricted diet for 18 days (phase 1). Individuals from both treatments were then assigned to a diet of the same quantity of food that was either simple (only crickets) or complex (crickets, cockroaches, waxworms, and mealworms) for 35 days (phase 2)...
November 2016: Journal of Experimental Zoology. Part A, Ecological Genetics and Physiology
https://www.readbyqxmd.com/read/28064475/administration-of-goji-lycium-chinense-mill-extracts-improves-erectile-function-in-old-aged-rat-model
#11
Hyong Woo Moon, Jung Woo Park, Kyu Won Lee, Hyun Cheol Jeong, Jin Bong Choi, Sae Woong Choi, Woong Jin Bae, Hyuk Jin Cho, U Syn Ha, Sung Hoo Hong, Jeong Ho Geum, Seong Bin Hong, Sae Woong Kim
PURPOSE: This study investigated the effect of goji (Lycium chinense Mill.) on erectile dysfunction in old-aged rats. MATERIALS AND METHODS: Twenty-four 18-month-old male Sprague-Dawley rats (defined as old-aged rats) were used. Treatment groups contained eight rats each: a control group, goji extract of 150 mg/kg/day group, and goji extract of 300 mg/kg/day group. Treatment was by orogastric tube once daily for 6 weeks. After 6 weeks of treatment, testes weight, serum testosterone, superoxide dismutase, nitric oxide (NO)-cyclic guanosine monophosphate (cGMP)-related parameters, intracavernous pressure/mean arterial pressure, and histological changes were examined...
December 22, 2016: World Journal of Men's Health
https://www.readbyqxmd.com/read/28064108/protection-of-male-reproductive-toxicity-in-rats-exposed-to-di-n-butyl-phthalate-during-embryonic-development-by-testosterone
#12
Nelli Giribabu, Pamanji Sreenivasula Reddy
Di-n-butyl phthalate (DBP) widely spread industrial chemical that made drastic alteration in male reproductive system. The present study elucidates the protective role of testosterone on reproductive toxicity in prenatal DBP exposed adult male rats. Pregnant rats were injected with corn oil or 100 and 500mg/kg body weight of DBP on gestation day (GD) 1, 7 and 14. F1 male rats were weaned, injected with either testosterone or vehicle. On postnatal day (PND) 100 F1 adult male rats were cohabited with untreated female rats...
January 5, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28040552/chemoprotective-role-of-quercetin-in-manganese-induced-toxicity-along-the-brain-pituitary-testicular-axis-in-rats
#13
Isaac A Adedara, Temitayo I Subair, Valerie C Ego, Oluwasetemi Oyediran, Ebenezer O Farombi
Reproductive dysfunction in response to manganese exposure has been reported in humans and animals. Quercetin, a bioflavonoid widely distributed in fruits, vegetables and beverages has been shown to possess antioxidant, anti-inflammatory and anti-apoptotic activities in different experimental model systems. However, there is dearth of scientific information on the influence of quercetin on manganese-induced reproductive toxicity. This study was designed to evaluate the influence of quercetin on manganese-induced functional alterations along the brain-pituitary- testicular axis in rats...
February 1, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28035607/beneficial-effects-of-quercetin-on-titanium-dioxide-nanoparticles-induced-spermatogenesis-defects-in-mice
#14
Layasadat Khorsandi, Mahmoud Orazizadeh, Nahid Moradi-Gharibvand, Masoud Hemadi, Esrafil Mansouri
Many recent studies have demonstrated that most nanoparticles (NPs) have an adverse or toxic action on male germ cells. In present study, protective effect of quercetin (Que) on titanium dioxide nanoparticle (NTiO2)-induced spermatogenesis defects in mice was investigated. Thirty-two Naval Medical Research Institute (NMRI) mice were randomly divided into four groups. Que group received 75 mg/kg of Que for 42 days. NTiO2 group received 300 mg/kg NTiO2 for 35 days. NTiO2 + Que group initially received 75 mg/kg Que for 7 days and was followed by concomitant administration of 300 mg/kg NTiO2 for 35 days...
December 29, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28000947/a-potential-mechanism-associated-with-lead-induced-testicular-toxicity-in-rats
#15
M A El-Magd, K A Kahilo, N E Nasr, T Kamal, M Shukry, A A Saleh
This study was conducted to investigate the mechanism of lead (Pb)-induced testicular toxicity. We examined the impact of Pb toxicity on 17β-oestradiol (E2), oestrogen receptors (ERs) and aromatase P450 which are key factors in spermatogenesis. Treatment of rats with Pb acetate (PbAc, 50 mg/L in drinking water) significantly reduced sperm count, motility, viability and increased sperm abnormalities along with degenerative changes in seminiferous tubules and Leydig cells. Additionally, administration of PbAc resulted in a significant reduction in serum testosterone, serum and testicular E2 as well as increased level of testicular testosterone...
December 21, 2016: Andrologia
https://www.readbyqxmd.com/read/27993842/exercise-induced-biochemical-changes-and-their-potential-influence-on-cancer-a-scientific-review
#16
Robert James Thomas, Stacey A Kenfield, Alfonso Jimenez
AIM: To review and discuss the available international literature regarding the indirect and direct biochemical mechanisms that occur after exercise, which could positively, or negatively, influence oncogenic pathways. METHODS: The PubMed, MEDLINE, Embase and Cochrane libraries were searched for papers up to July 2016 addressing biochemical changes after exercise with a particular reference to cancer. The three authors independently assessed their appropriateness for inclusion in this review based on their scientific quality and relevance...
December 19, 2016: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/27989876/iridoid-glycoside-from-cornus-officinalis-ameliorated-diabetes-mellitus-induced-testicular-damage-in-male-rats-involvement-of-suppression-of-the-ages-rage-p38-mapk-signaling-pathway
#17
Yuping Chen, Yunhao Wu, Xiaoyang Gan, Kai Liu, L V Xing, Hongsheng Shen, Guoying Dai, Huiqin Xu
ETHNOPHARMACOLOGICAL RELEVANCE: Cornus officinalis (CO) has been widely used as a traditional Chinese medicine for treating diabetes mellitus (DM) and its complications. Iridoid glycoside from C. officinalis (IGCO) can resist apoptosis, hyperglycemia, oxidation and so on. The aim of this study was to investigate the therapeutic effects of IGCO on DM-induced testicular damage through inhibition of the AGEs/RAGE/p38 MAPK signaling pathway. MATERIALS AND METHODS: A DM model of male Wistar rats was induced with streptozotocin injection (30mg/kg, i...
October 27, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27976631/sertraline-induced-reproductive-toxicity-in-male-rats-evaluation-of-possible-underlying-mechanisms
#18
Ozlem Atli, Merve Baysal, Gozde Aydogan-Kilic, Volkan Kilic, Seyda Ucarcan, Burak Karaduman, Sinem Ilgin
This study was conducted to clarify the toxic effects of sertraline (SRT) on the reproductive system of male rats and to elucidate the underlying mechanisms. Rats were treated orally with SRT at doses of 5, 10, and 20 mg kg-1 for 28 consecutive days. At the end of the treatment period, sperm concentration, sperm motility, and sperm morphology were investigated by computer-assisted sperm analysis system whereas sperm DNA damage was detected by comet assay. The oxidative status of the testes was investigated, and a histopathological examination was conducted...
December 13, 2016: Asian Journal of Andrology
https://www.readbyqxmd.com/read/27951419/lithium-induced-oxidative-stress-and-related-damages-in-testes-and-heart-in-male-rats-the-protective-effects-of-malva-sylvestris-extract
#19
Anouar Ben Saad, Ilhem Rjeibi, Hichem Alimi, Sana Ncib, Amani Smida, Nacim Zouari, Lazhar Zourgui
Malva sylvestris is widely used in Mediterranean and European traditional medicine and ethnoveterinary for the treatment of various diseases. This study, carried out on male Wistar rats, evaluates the beneficial effects of Malva sylvestris extract upon lithium carbonate-induced damages in testes and heart. For this purpose, Malva sylvestris extract at a dose of 0.2g/kg was orally administrated, followed by 25mg/kg lithium carbonate (intraperitoneal injection, twice daily). Lithium carbonate treatment significantly (p<0...
February 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27927244/wuzi-yanzong-pill-a-chinese-polyherbal-formula-alleviates-testicular-damage-in-mice-induced-by-ionizing-radiation
#20
Hai-Jie Ji, Dong-Mei Wang, Yu-Peng Wu, Yan-Yan Niu, Li-Li Jia, Bi-Wang Liu, Qian-Jin Feng, Ma-Li Feng
BACKGROUND: Chinese medicine Wuzi Yanzong pill (WZYZP) was firstly documented in ancient Chinese medical works "She Sheng Zhong Miao Fang" by Shi-Che Zhang in 1550 AD. The traditional herbal formula is widely used in treating nephrasthenia lumbago, prospermia, erectile dysfunction and male sterility. The present study was to explore the effects of WZYZP on ionizing irradiation-induced testicular damage in mice. METHODS: The pelvic region of male mice was exposed to X-rays for inducing testicular damage...
December 7, 2016: BMC Complementary and Alternative Medicine
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