ArticleOncotarget2017
Simulated weightlessness affects the expression and activity of neuronal nitric oxide synthase in the rat brain.
Article in Oncotarget, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Resistance and Aerobic Preconditioning Delays Unloading-Induced Multisystemic Physiological Changes: The NEBULA Project.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025Article
- Influence of microgravity on spontaneous calcium activity of primary hippocampal neurons grown in microfluidic chips.NPJ microgravity · 2024Article
- Protective effects of ginsenosides Rg1 and Rb1 against cognitive impairment induced by simulated microgravity in rats.Frontiers in pharmacology · 2023Article
- Hindlimb unloading-induced reproductive suppression via Downregulation of hypothalamic Kiss-1 expression in adult male rats.Reproductive biology and endocrinology : RB&E · 2021Article
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3 authors.
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Abstract
Spaceflight induces pathophysiological alterations in various organs. To study pathophysiological adaptations to weightlessness on the ground, the tail suspension (TS) rat model has been used to simulate the effects of weightlessness. There is currently little information on the effect of TS on the expression and activity of nitric oxide synthase (NOS) in the brain. In this study, we examined time-dependent alterations in the expression and activity of neuronal NOS (nNOS) in the brains of TS rats. Male Sprague-Dawley rats were tail-suspended for 1 (TS1), 7 (TS7), and 14 (TS14) days or rested on the ground for 3 days after 14 days of TS. TS1 and TS7 rats exhibited no significant alterations in the expression of nNOS compared to control rats, whereas nNOS expression in TS14 rats was significantly upregulated compared to control rats. Normalized expression of nNOS mRNA and protein in TS14 rats (1.86 ± 0.48 and 1.84 ± 0.29, respectively) were significantly higher than that of control rats (P < 0.001 and P < 0.001, respectively). Consistent with these results, significant elevations in NOS activity and NO production were observed in TS14 rats. Thus, we demonstrated a significant upregulation of nNOS expression, accompanied by significant increases in NOS activity and NO production, in the brain of rats exposed to simulated weightlessness.
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