scholarly journals Testosterone role during seasons changes in the dogs testes

2017 ◽  
Vol 41 (1) ◽  
pp. 125-130
Author(s):  
Nazih Wayes Zaid
Keyword(s):  
Sertoli Cells ◽  
Testosterone Level ◽  
Leydig Cells ◽  
Hormone Receptors ◽  
Winter Season ◽  
Serum Testosterone ◽  
Reproductive Activity ◽  
Summer Season ◽  
Serum Testosterone Level ◽  
Four Seasons

     This study was conducted to evaluate the effect of seasons on serum testosterone level, testis histology examination and testosterone receptors by using cytoimmunochemistry techniques. Samples of blood and both testes were collected from 24 local dogs aged between 2-3 years and weighted 18-22 kg. This study carried out at 2015, divided into four seasons. No differences in testosterone level were observed between seasons. However, histological examinations were characterized by significant (P<0.01) changes during seasons in tubular diameters, germinal thickness and tubular area. Cytoimmunochemistry investigation showed differences between seasons also, there was a distributions of testosterone hormone receptors in the Leydig cells, Sertoli cells and in germinal epithelium during spring and autumn, at the same time the winter season showed distribution of testosterone hormone receptors in Leydig and Sertoli cells only. The summer season characterize by diffuse of receptors in Leydig cells only. In conclusion there was a significant effect of season on testis of dog in Iraq, the summer season was the lowest in reproductive activity while the spring and autumn season was the highest of reproductive activity of dog in Iraq.

Vitamin C ameliorates the adverse effects of dexamethasone on sperm motility, testosterone level, and spermatogenesis indexes in mice

2018 ◽  
Vol 38 (4) ◽  
pp. 409-418 ◽  
Author(s):  
F Sadeghzadeh ◽  
MS Mehranjani ◽  
M Mahmoodi
Keyword(s):  
Adverse Effects ◽  
Vitamin C ◽  
Sperm Motility ◽  
Testosterone Level ◽  
Leydig Cells ◽  
Serum Testosterone ◽  
Serum Testosterone Level ◽  
Control Group ◽  
The Mean ◽  
Vit C

Background: Dexamethasone (DEX) is a common medicine that is capable of causing malformation in the male reproductive system. The aim of this study was to investigate the effect of vitamin C (Vit-C) on spermatogenesis indexes and daily sperm production (DSP) in adult mice treated with DEX. Methods: Male Naval Medical Research Institute (NMRI) mice were divided into four groups: Control, DEX (7 mg/kg/day), Vit-C (100 mg/kg/day), and DEX +Vit-C and treated for 7 days with intraperitoneal injection. Results: A significant increase in the mean levels of serum and tissue malondialdehyde (MDA) and apoptosis of Leydig cells was found in the DEX group compared to the control group. Sperm motility, DSP, tubular differentiation index, meiotic index, spermatogenesis index, the mean number of spermatocytes, round and long spermatids, and Leydig cells, and also serum testosterone level decreased in the DEX group compared to the control group. The results of this study indicate that Vit-C can significantly prevent the adverse effects of DEX on the mean number of spermatocyte, spermatid, and Leydig cells, tubular differentiation, meiotic and spermatogenesis index, DSP, sperm motility, and the mean levels of serum MDA. Conclusion: In conclusion, our results showed that coadministration of Vit-C and DEX prevents the adverse effects of DEX on the spermatogenesis indexes and DSP.

scholarly journals Effects of exogenous adiponectin supplementation in early pregnant PCOS mice on the metabolic syndrome of adult female offspring

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Meng Zuo ◽  
Guotao Liao ◽  
Wenqian Zhang ◽  
Dan Xu ◽  
Juan Lu ◽  
...  
Keyword(s):  
Adult Female ◽  
Early Pregnancy ◽  
Testosterone Level ◽  
Metabolic Disorders ◽  
Serum Testosterone ◽  
Female Offspring ◽  
Metabolic Phenotype ◽  
Serum Testosterone Level ◽  
The Metabolic Syndrome ◽  
Pcos Group

Abstract Objective PCOS is a heterogeneous endocrine disorder with both reproductive and metabolic abnormalities. At present, PCOS has been confirmed to have a certain genetic background. Compared with healthy women, the vast majority of PCOS patients have hyperandrogenemia, and this excessive androgen exposure during pregnancy may affect the development of female fetuses. The aim of the current study was to investigate the effect of adiponectin intervention during early pregnancy of obese mice with PCOS on the metabolic phenotype of adult female offspring. Methods After the PCOS model was established, C57BL/6J mice were divided into maternal-control, maternal-PCOS, and maternal-PCOS + APN groups. DHEA-induced PCOS mice were supplemented with adiponectin (10 mg/kg/day) in the early pregnancy in order to eliminate adverse hormone exposure and then traced for endocrine indicators in their adult female offspring, which were observed for metabolism syndrome or endocrine disturbance and exhibited the main effects of APN. To further explore the underlying mechanism, the relative expressions of phosphorylated AMPK, PI3K, and Akt were detected in the ovaries of offspring mice. Results The serum testosterone level of the maternal-PCOS + APN group in early pregnancy was significantly lower than that of the maternal-PCOS group (p < 0.01). The serum testosterone level in the offspring-PCOS + APN group was significantly lower than in the offspring-PCOS group (p <0.05), the diestrus time characterized by massive granulocyte aggregation in the estrus cycle was significantly shorter than in the offspring-PCOS group (p<0.05), and the phenotypes of PCOS-like reproductive disorders and metabolic disorders, such as obesity, insulin resistance, impaired glucose tolerance, and hyperlipidemia, were also significantly improved in the offspring-PCOS + APN group (p < 0.05). Compared with the control group, the expression levels of phosphorylated AMPK, PI3K, and Akt in the offspring-PCOS group were significantly decreased (p < 0.05), while those in the offspring-PCOS + APN group were significantly increased (p < 0.05). Conclusions APN intervention in early pregnancy significantly reduced the adverse effects of maternal obesity and high androgen levels during pregnancy on female offspring and corrected the PCOS-like endocrine phenotype and metabolic disorders of adult female offspring. This effect may be caused by the activation of the AMPK/PI3K-Akt signaling pathway in PCOS offspring mice.

Correlation Between Serum Testosterone Level and Concentrations of Copper and Zinc in Hair Tissue

2011 ◽  
Vol 144 (1-3) ◽  
pp. 264-271 ◽  
Author(s):  
Chung Soo Chang ◽  
Jong Bo Choi ◽  
Hae Jin Kim ◽  
Sat Byul Park
Keyword(s):  
Testosterone Level ◽  
Serum Testosterone ◽  
Serum Testosterone Level ◽  
Copper And Zinc
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