scholarly journals The Production of Testosterone and Gene Expression in Neonatal Testes of Rats Exposed to Diisoheptyl Phthalate During Pregnancy is Inhibited

2021 ◽  
Vol 12 ◽  
Author(s):  
Bin Ji ◽  
Zina Wen ◽  
Chaobo Ni ◽  
Qiqi Zhu ◽  
Yiyan Wang ◽  
...  
Keyword(s):  
Leydig Cell ◽  
Corn Oil ◽  
Serum Testosterone ◽  
Male Rats ◽  
Sprague Dawley ◽  
Testosterone Levels ◽  
Protein Levels ◽  
Gestational Exposure ◽  
Phthalate Plasticizer ◽  
Neonatal Testis

Background: Diisoheptyl phthalate (DIHP) is a phthalate plasticizer, which is a branched phthalate. Here, we reported the effects of gestational exposure to DIHP on testis development in male rats.Methods: Pregnant Sprague-Dawley rats were orally fed with vehicle (corn oil, control) or DIHP (10, 100, 500, and 1,000 mg/kg) from gestational day (GD) 12–21. At GD21, serum testosterone levels, the number and distribution of fetal Leydig cells, and testicular mRNA and protein levels, the incidence of multinucleated gonocytes, and focal testicular hypoplasia in the neonatal testis were measured.Results: DIHP increased the fetal Leydig cell cluster size and decreased the fetal Leydig cell size with LOAEL of 10 mg/kg. DIHP did not affect the fetal Leydig cell number. DIHP significantly lowered serum testosterone levels, down-regulated the expression of steroidogenesis-related genes (Lhcgr, Star, Cyp11a1, Hsd3b1, Cyp17a1, and Hsd17b3) and testis descent-related gene (Insl3) as well as protein levels of cholesterol side-chain cleavage enzyme (CYP11A1) and insulin-like 3 (INSL3). DIHP dose-dependently increased the percentage of multinucleated gonocytes with the low observed adverse-effect level (LOAEL) of 100 mg/kg. DIHP induced focal testicular hypoplasia.Conclusion: Gestational exposure to DIHP causes testis dysgenesis in rats.

Polychlorinated biphenyls have inhibitory effect on testicular steroidogenesis by downregulation of P45017α and P450scc

2010 ◽  
Vol 26 (5) ◽  
pp. 287-296 ◽  
Author(s):  
Dae-Yong Han ◽  
Sang-Rim Kang ◽  
Oh-Sung Park ◽  
Jae-Hyeon Cho ◽  
Chung-Kil Won ◽  
...  
Keyword(s):  
Polychlorinated Biphenyls ◽  
Corn Oil ◽  
Environmental Pollutants ◽  
Serum Testosterone ◽  
Inhibitory Effect ◽  
Male Rats ◽  
Testis Weight ◽  
Sprague Dawley ◽  
Tissue Samples ◽  
Testicular Steroidogenesis

Polychlorinated biphenyls (PCBs) are environmental pollutants that are quite toxic to biological systems. This study examined the inhibitory effect of PCB126 and PCB114 on testicular steroidogenesis in male rats. Male Sprague Dawley rats received weekly intraperitoneal injections of PCB126 (0.2 mg/kg) or PCB114 (20 mg/kg) or vehicle (corn oil). Animals from each group were sacrificed at 2, 5 and 8 weeks after the injections. Blood and testis tissue samples were collected for the hormone assay, Western blotting and reverse transcriptase polymerase chain reaction (RT-PCR). The testosterone, luteinizing hormone (LH) and follicle-stimulating hormone (FSH) levels were assayed, and the expression levels of the mRNA and proteins associated with the testosterone biosynthesis pathway were measured to determine the effect of PCB126 and PCB114 on testicular steroidogenesis. The results showed that the testis weight was significantly higher in the PCB126-treated rats given eight shots. Moreover, the serum testosterone levels were significantly lower in the PCB126 and PCB114-treated groups than the control. The transcription and translation levels of P45017α and P450scc were significantly lower in the PCB126-treated groups than the control. These results suggest that PCB126 may affect testicular steroidogenesis by downregulating P45017α, P450 scc and have inhibitory effect on the testicular functions.

scholarly journals Examination of Apoptotic and Autophagic Effects of Chronic Roflumilast Use on Rat Testicular Tissue by Immunohistochemical and Immunofluorescence Methods

2021 ◽  
Author(s):  
arzu gezer ◽  
Ebru KARADAĞ SARI
Keyword(s):  
Testosterone Level ◽  
Caspase 3 ◽  
Serum Testosterone ◽  
Testicular Tissue ◽  
Male Rats ◽  
Pde4 Inhibitor ◽  
Serum Testosterone Level ◽  
Sprague Dawley ◽  
Negative Effects ◽  
Testosterone Levels

Abstract Roflumilast (ROF) (3-cyclo-propylmethoxy-4-difuorome-thoxy-N-[3,5-di-chloropyrid-4-yl] benzamide) is a second generation and forcible phosphodiesterase-4 (PDE4) inhibitor. This study aims to investigate the effects of chronic Roflumilast in different doses on testicular tissue and testosterone levels in healthy Sprague-Dawley rats. During the research, the 6 weeks old (180–200 gr), 36 male rats were divided into 4 groups. Roflumilast (ROF) was administered as 0.5 mg/kg and 1 mg/kg by oral gavage for four weeks, once each day. Hematoxylin-Eosin (H&E) staining for histopathological examinations in testicular tissue, immunohistochemical and immunofluorescence examinations for Caspase-3, Apoptosis Inducing Factor (AIF) and Light Chain 3β (LC3B) expression levels, and ELISA method used to determine serum testosterone levels. Data were analyzed using SPSS v.22 with Kruskal-Wallis, Mann Whitney-U, and Wilcoxon tests. Roflumilast group lost weight compared to the control and sham. Shedding in the seminiferous epithelium, degenerations in the interstitial area, separation between cells, desquamation, interstitial edema and degenerative changes in the testicular tissue was observed. While apoptosis and autophagy determined by Caspase-3, AIF and LC3B were close and statistically insignificant in control and sham, there was significantly increased apoptotic and autophagic changes and immunopositivity in the ROF groups. The 1 mg/kg Roflumilast group’s serum testosterone level was lower than control, sham and 0.5 mg/kg Roflumilast groups. When the research data was evaluated, it was determined that the chronic use of the active ingredient Roflumilast, which has a broad-spectrum area such as COPD, arthritis, neurodegenerative diseases, liver and dermatology, had negative effects on the testicular tissue and testosterone level of rats.

scholarly journals The Ameliorating Effect of Berberine-Rich Fraction against Gossypol-Induced Testicular Inflammation and Oxidative Stress

2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
Samar R. Saleh ◽  
Rana Attia ◽  
Doaa A. Ghareeb
Keyword(s):  
Oxidative Stress ◽  
Male Infertility ◽  
Corn Oil ◽  
Semen Quality ◽  
Experimental Period ◽  
Male Rats ◽  
Tissue Inhibitors Of Metalloproteinases ◽  
Interleukin 12 ◽  
Sprague Dawley ◽  
And Oxidative Stress

This study was aimed at evaluating the efficacy of berberine-rich fraction (BF) as a protective and/or a therapeutic agent against inflammation and oxidative stress during male infertility. Sexually mature Sprague-Dawley male rats were divided into five groups treated with either corn oil, BF (100 mg/kg BW, orally, daily for 30 days), gossypol acetate (5 mg/kg BW, i.p.) eight times for 16 days, BF alone for 14 days then coadministered with gossypol acetate for the next 16 days (protected group), or gossypol acetate for 16 days then treated with BF for 30 days (treated group). All animals completed the experimental period (46 days) without obtaining any treatments in the gap period. Sperm parameters, oxidative index, and inflammatory markers were measured. Gossypol injection significantly decreased the semen quality and testosterone level that resulted from the elevation of testicular reactive oxygen and nitrogen species (TBARS and NO), TNF-α, TNF-α-converting enzyme, and interleukins (IL-1β, IL-6, and IL-18) by 230, 180, 12.5, 97.9, and 300%, respectively, while interleukin-12 and tissue inhibitors of metalloproteinases-3 were significantly decreased by 59 and 66%, respectively. BF (protected and treated groups) significantly improved the semen quality, oxidative stress, and inflammation associated with male infertility. It is suitable to use more advanced studies to validate these findings.

scholarly journals Brain Cortical and Hippocampal Dopamine: A New Mechanistic Approach for Eurycoma longifolia Well-Known Aphrodisiac Activity and Its Chemical Characterization

2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
Shahira M. Ezzat ◽  
Marwa I. Ezzat ◽  
Mona M. Okba ◽  
Salah M. Hassan ◽  
Amgad I. Alkorashy ◽  
...  
Keyword(s):  
Chemical Characterization ◽  
Serum Testosterone ◽  
Total Body Weight ◽  
Male Rats ◽  
Sprague Dawley ◽  
Noradrenaline Content ◽  
Eurycoma Longifolia ◽  
Mechanistic Approach ◽  
Dopamine Content ◽  
Total Body

Eurycoma longifolia Jack (Fam.: Simaroubaceae), known as Tongkat Ali (TA), has been known as a symbol of virility and sexual power for men. Metabolic profiling of the aqueous extract of E. longifolia (AEEL) using UPLC-MS/MS in both positive and negative modes allowed the identification of seventeen metabolites. The identified compounds were classified into four groups: quassinoids, alkaloids, triterpenes, and biphenylneolignans. AEEL is considered safe with oral LD50 cut-off >5000 mg/kg. Oral administration of 50, 100, 200, 400, or 800 mg/kg of AEEL for 10 consecutive days to Sprague-Dawley male rats caused significant reductions in mounting, intromission, and ejaculation latencies and increased penile erection index. AEEL increased total body weight and relative weights of seminal vesicles and prostate. Total and free serum testosterone and brain cortical and hippocampal dopamine content was significantly elevated in treated groups with no significant effects on serotonin or noradrenaline content.

scholarly journals Triadimefon Disrupts Working Memory in the Matching-to-Position Task

SAGE Open ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 215824401880579
Author(s):  
John M. Holden ◽  
Ethan Hemmelman ◽  
Rowan McGlasson ◽  
Zaria Smith ◽  
Ashley Ruhland ◽  
...  
Keyword(s):  
Working Memory ◽  
Corn Oil ◽  
Acute Exposure ◽  
Male Rats ◽  
Sprague Dawley ◽  
Delayed Matching ◽  
Position Task ◽  
Matching To Position

Triadimefon (TDF) is a fungicide which has psychostimulant properties similar to cocaine and amphetamine. Past studies with psychostimulants suggests that acute exposure leads to disruptions in working memory. In this study, we examined the effects of TDF exposure (relative to corn oil control) on performance in the delayed matching-to-position task in two separate studies using Sprague-Dawley male rats. In both studies, TDF exposure led to significantly poorer performance across delays. TDF shows similar properties to cocaine and amphetamine in terms of disrupting working memory.

Electrocardiograms of male rats fed rapeseed oil

1977 ◽  
Vol 55 (5) ◽  
pp. 1116-1121 ◽  
Author(s):  
W. G. Hunsaker ◽  
H. W. Hulan ◽  
J. K. G. Kramer ◽  
A. H. Corner
Keyword(s):  
Rapeseed Oil ◽  
Corn Oil ◽  
Frontal Plane ◽  
P Wave ◽  
Male Rats ◽  
Qrs Complex ◽  
Sprague Dawley ◽  
Cardiac Rate ◽  
Sprague Dawley Rats ◽  
Wave Forms

Frontal plane electrocardiograms (standard limb leads) were recorded on male Sprague–Dawley rats fed for 14 weeks on semisynthetic diets containing 20% (by weight) of Brassica napus cv. Tower or B. campestris cv. Span rapeseed oil or fractions isolated from Span rapeseed oil. Control diets were rat Chow or semisynthetic diets containing 20% (by weight) of either safflower oil or corn oil. The amplitude of the P, Q, R, S, and T waves, the duration of the P wave, QRS complex, and P–R interval, and the cardiac rate were measured in the electrocardiograms and differences between groups compared statistically. While there were statistically significant differences in the amplitude of some of the wave forms, there were no consistent differences which could be attributed to the feeding of rapeseed oil or its fractions. The duration of the P wave and the QRS complex were significantly longer in some of the control groups than those in most of the treated groups. There was no correlation between the presence of a Q wave and the incidence of myocardial lesions in any group. Cardiac rate was essentially the same in all groups.

scholarly journals Effects ofNigella sativa(Habbatus sauda) Oil and Nicotine Chronic Treatments on Sperm Parameters and Testis Histological Features of Rats

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Ng Cho Ping ◽  
Noor Hashida Hashim ◽  
Durriyyah Sharifah Hasan Adli
Keyword(s):  
Body Weight ◽  
Sperm Motility ◽  
Seminiferous Tubule ◽  
Corn Oil ◽  
Sperm Quality ◽  
Sperm Parameters ◽  
Male Rats ◽  
Seminiferous Tubules ◽  
Sprague Dawley ◽  
Histological Features

Twenty-fourSprague-Dawleymale rats (7–9 weeks old, 200–250 g) were divided into Nicotine (N) (0.5 mg/100 g body weight (BW), Nicotine Control (NC) (saline, 0.1 mL/100 g BW),Habbatus saudaoil (HS) (6.0 μL/100 g BW), andHabbatus saudaControl (HSC) (corn oil, 0.1 mL/100 g BW) groups and treated for 100 days. Sperm parameters and seminiferous tubules measurements were evaluated. The N showed a significantly lower sperm motility (1.03±0.05×106 sperm/mL) and percentage of normal (82.61±0.03%) and live (93.88±0.01%) sperm, higher value for the seminiferous tubule (253.36±1.83 μm) and lumen (100.15±2.38 μm) diameters and spermatogonia (19.85±0.39 μm) and spermatocytes (33.37±0.59 μm) layers, and thinner spermatid-sperm layer (22.14±0.71 μm) than the NC (P<0.05). The HS had significantly higher sperm motility (1.49±0.04×106 sperm/mL) and percentage of normal (90.61±0.01%) and live (96.98±0.01%) sperm, smaller lumen diameter (67.53±2.34 μm) and thinner spermatogonia (17.67±0.32 μm) and wider spermatid-sperm (36.95±0.79 μm) layers than the HSC (P<0.05). This research confirmed that nicotine reduced sperm motility and morphology of normal and live sperms and also affected the testis histology, whileHabbatus saudaoil increased sperm quality and gave better testis histological features.

Bisphenol A decreases expression of insulin-like factor 3 and induces histopathological changes in testes of rat

2021 ◽  
pp. 074823372110140
Author(s):  
Leman Sencar ◽  
Gulfidan coskun ◽  
Dilek Şaker ◽  
Tuğçe Sapmaz ◽  
Abdullah Tuli ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Leydig Cell ◽  
Cell Function ◽  
Light And Electron Microscopy ◽  
Serum Testosterone ◽  
Testicular Atrophy ◽  
Male Rats ◽  
Chemical Agent ◽  
High Doses ◽  
Leydig Cell Function

Bisphenol A (BPA) is a chemical agent known to have detrimental reproductive and developmental effects. The tissue-specific impacts of BPA exposures and target tissues sensitiveness to BPA are still unclear. The aim of this study was to determine the short- and long-term dose-dependent toxic effects of BPA on rat testes. Forty-eight Wistar albino male rats were divided into four groups each containing 12 rats. To induce toxicity, BPA was administered orally at three different dosages (50, 100, and 200 mg/kg) for 14 and 28 days, respectively. Testis tissues were examined using light and electron microscopy, immunohistochemistry, and biochemical methods. Serum testosterone (T) and luteinizing hormone (LH) levels were measured. Additionally, insulin-like factor 3 (INSL3) as a marker of Leydig cell function was evaluated immunohistochemically. Groups administered high doses of BPA showed severe degenerations such as testicular atrophy, spermatogenic arrest, and interstitial edema in testis. Also, a significant decrease in INSL3 immunoreactivity and serum LH and T levels was found. The results indicated that both increased exposure time and dosage of BPA caused more serious detrimental effects on testes in the rat. Decreased INSL3 and T levels was evidence of Leydig cell function impairment due to BPA.

Leydig cell resistance to the cytotoxic effect of ethylene dimethanesulphonate in the adult rat testis

1985 ◽  
Vol 105 (3) ◽  
pp. 311-NP ◽  
Author(s):  
I. D. Morris
Keyword(s):  
Seminal Vesicle ◽  
Leydig Cell ◽  
Leydig Cells ◽  
Serum Testosterone ◽  
Male Rats ◽  
Cell Physiology ◽  
Testis Weight ◽  
Endocrine Activity ◽  
Adult Rat ◽  
Seminal Vesicle Weight

ABSTRACT Weekly doses of the Leydig cell cytotoxic ethylene dimethanesulphonate (EDS) were administered to adult male rats in an attempt to study the endocrine activity of the testis in the absence of Leydig cells. One week after the first dose serum testosterone and LH concentrations and seminal vesicle weights were close to levels in castrated rats and testicular human chorionic gonadotrophin (hCG) binding was severely depressed. These changes were maintained for a further week but subsequently began to return to, but did not achieve, control levels. After six weekly doses seminal vesicle weight and serum testosterone concentrations were significantly higher than in the castrated rats. Serum LH concentrations were declining towards control values at 4 weeks but had risen again at 6 weeks. Serum FSH concentrations were raised to about 50% of the value in castrated rats throughout the period studied. Testis weight and hCG binding, which initially fell, were partially restored at 6 weeks and spermatogenesis was recovering. The data show that responses of the testis to multiple doses of EDS are similar to those after a single dose. This apparent resistance indicates that the regenerating Leydig cells are functionally different from the mature Leydig cell. The similarities between the maturing Leydig cell seen after EDS destruction and those in the immature rat suggest that EDS will provide a valuable model for the investigation of Leydig cell physiology. J. Endocr. (1985) 105, 311–316

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