Abstract
Background: Stress disturbs homeostasis and may induce various disorders. Immobilization stress (IS) induced due to reduced area provided for mobility results in the imbalance of oxidant and antioxidant status. Stress leads to male reproductive dysfunction in many species, including rodents and humans. Induction of heme oxygenase-1 (HO-1), the rate limiting enzyme in heme degradation, increases host antioxidant defenses. We elucidated the protective role of induction of HO-1 by hemin on testicular damage induced by acute IS.
Methods: Male albino rats were immobilized for a period of 6 h. Hemin was given for 3 consecutive days (40 μmol/kg/day, s.c.), before subjecting the animals to acute IS.
Results: Upregulation of HO-1 following hemin administration was evidenced in our study by increasing carboxyhemoglobin (COHb) level. Histopathological evaluation confirmed that acute IS caused significant testicular tissue injury, which improves in groups pretreated with hemin. Acute IS also caused significant increases in serum catecholamines and corticosterone levels; however, it produced a significant decrease in testosterone level with non-significant changes in luteinizing hormone (LH) level. In addition, it was found that IS significantly increased testicular malondialdehyde (MDA) and decreased catalase activities. The HO-1 inducer (i.e., hemin) significantly decreased catecholamines and corticosterone levels, and increased testosterone and LH levels. Hemin also decreased testicular MDA and increased catalase activities significantly.
Conclusions: Induction of HO-1 protects the testes through its antioxidant and anti-inflammatory effects. Thus, it represents a potential therapeutic option to protect testicular tissue from detrimental effects of IS.
Prof. Dr. Ibrahim Yahia Ibrahim, Head of the Physiology Department, Faculty of Medicine, Minia University is gratefully acknowledged for his support and encouragement throughout this work.
Conflict of interest statement
Authors’ conflict of interest disclosure: The authors stated that there are no conflicts of interest regarding the publication of this article.
Research funding: None declared.
Employment or leadership: None declared.
Honorarium: None declared.
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©2013 by Walter de Gruyter Berlin Boston
Articles in the same Issue
- Masthead
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- Heat: not black, not white. It’s gray!!!
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- Hyperpolarization-activated cyclic nucleotide-gated 2 (HCN2) polymorphism is associated with chronic inflammatory periodontitis. A cross-sectional study
- The effect of coadministration of α-tocopherol and ascorbic acid on arsenic trioxide-induced testicular toxicity in adult rats
- Effect of acute immobilization stress with or without a heme oxygenase inducer on testicular structure and function in male albino rats
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- Dichloroacetate at therapeutic concentration alters glucose metabolism and induces regulatory T-cell differentiation in alloreactive human lymphocytes
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- Acrolein-induced inflammatory signaling in vascular smooth muscle cells requires activation of serum response factor (SRF) and NFκB
- Nephroprotective activity of Cocculus hirsutus leaf extract in 5/6 nephrectomized rat model
- Toxicological evaluations of methanolic extract of Moringa oleifera leaves in liver and kidney of male Wistar rats
- Nevirapine induces testicular toxicity in Wistar rats: reversal effect of kolaviron (biflavonoid from Garcinia kola seeds)
- Toxicity of Chevron Escravos crude oil and chemical dispersant on guinea pig testicular function
- Jobelyn® pretreatment ameliorates symptoms of psychosis in experimental models
Articles in the same Issue
- Masthead
- Masthead
- Review
- Heat: not black, not white. It’s gray!!!
- Original Articles
- Distribution of performance-related gene polymorphisms (ACTN3 R577X and ACE ID) in different ethnic groups of the Indian Army
- Birth month and longevity: birth month of victims of sudden (SCD, ≤1 h) and rapid (RCD, ≤24 h) cardiac deaths
- Hyperpolarization-activated cyclic nucleotide-gated 2 (HCN2) polymorphism is associated with chronic inflammatory periodontitis. A cross-sectional study
- The effect of coadministration of α-tocopherol and ascorbic acid on arsenic trioxide-induced testicular toxicity in adult rats
- Effect of acute immobilization stress with or without a heme oxygenase inducer on testicular structure and function in male albino rats
- Effect of Jobelyn® on intruder- and isolation-induced aggressive behavior in mice
- Dichloroacetate at therapeutic concentration alters glucose metabolism and induces regulatory T-cell differentiation in alloreactive human lymphocytes
- Antinociceptive, anti-inflammatory and antiulcerogenic activities of ethanol root extract of Strophanthus hispidus DC (Apocynaceae)
- Acrolein-induced inflammatory signaling in vascular smooth muscle cells requires activation of serum response factor (SRF) and NFκB
- Nephroprotective activity of Cocculus hirsutus leaf extract in 5/6 nephrectomized rat model
- Toxicological evaluations of methanolic extract of Moringa oleifera leaves in liver and kidney of male Wistar rats
- Nevirapine induces testicular toxicity in Wistar rats: reversal effect of kolaviron (biflavonoid from Garcinia kola seeds)
- Toxicity of Chevron Escravos crude oil and chemical dispersant on guinea pig testicular function
- Jobelyn® pretreatment ameliorates symptoms of psychosis in experimental models