Exercise protects against methamphetamine-induced aberrant neurogenesis
نویسندگان
چکیده
While no effective therapy is available for the treatment of methamphetamine (METH)-induced neurotoxicity, aerobic exercise is being proposed to improve depressive symptoms and substance abuse outcomes. The present study focuses on the effect of exercise on METH-induced aberrant neurogenesis in the hippocampal dentate gyrus in the context of the blood-brain barrier (BBB) pathology. Mice were administered with METH or saline by i.p. injections for 5 days with an escalating dose regimen. One set of mice was sacrificed 24 h post last injection of METH, and the remaining animals were either subjected to voluntary wheel running (exercised mice) or remained in sedentary housing (sedentary mice). METH administration decreased expression of tight junction (TJ) proteins and increased BBB permeability in the hippocampus. These changes were preserved post METH administration in sedentary mice and were associated with the development of significant aberrations of neural differentiation. Exercise protected against these effects by enhancing the protein expression of TJ proteins, stabilizing the BBB integrity, and enhancing the neural differentiation. In addition, exercise protected against METH-induced systemic increase in inflammatory cytokine levels. These results suggest that exercise can attenuate METH-induced neurotoxicity by protecting against the BBB disruption and related microenvironmental changes in the hippocampus.
منابع مشابه
Alterations in adult hippocampal neurogenesis, aberrant protein s-nitrosylation, and associated spatial memory loss in streptozotocin-induced diabetes mellitus type 2 mice
Objective(s): Epidemiological and biochemical studies conducted over the past two decades have established a strong link between type 2 diabetes mellitus (T2DM) and Alzheimer’s disease (AD). However, the exact mechanisms through which aberrations in insulin signaling associated with T2DM contribute to cognitive decline are not yet known. Materials and Methods: In an effort to explore possible m...
متن کاملNew horizon for the therapeutic modality of exercise on neuropsychiatric disorders
Since discovery of the possibility that neuronal precursors cells can differentiate into neurons (Reynolds and Weiss, 1992), neurogenesis in the olfactory bulb (Tarozzo et al., 1995) and hippocampus (Eriksson et al., 1998) of the adult mammals has been confirmed. The hippocampus plays a major role in spatial learning and memory in animals as well as humans. Neurogenesis in the hippocampus occur...
متن کاملاثر تمرین هوازی شنا و مصرف عصارۀ سیر بر سطوح برخی از فاکتورهای رشد مداخلهگر در آنژیوژنز و نروژنز بافت مغز در موشهای صحرایی پیر
Background and Objective: Angiogenesis and Neurogenesis declines with aging whereas regular exercise and antioxidant supplements are associated with various physiological changes in the brain. Therefore, the aim of this study was to assess the effect of swimming exercise and garlic extract on the some of growth factors involved in angiogenesis and neurogenesis in the brain tissue of old rats. ...
متن کاملDuloxetine by Modulating the Akt/GSK3 Signaling Pathways Has Neuroprotective Effects against Methamphetamine-Induced Neurodegeneration and Cognition Impairment in Rats
Background: The neuroprotective effects of duloxetine, as an antidepressant agent, and the neurodegenerative effects of methamphetamine have been shown in previous studies. Nonetheless, their exact neurochemical and behavioral effects are still unclear. In the current study, we sought to clarify the molecular mechanisms involved in the protective effects of duloxetine against methamphetamine-in...
متن کاملProtective Role for the Disulfide Isomerase PDIA3 in Methamphetamine Neurotoxicity
Methamphetamine abuse continues to be a worldwide problem, damaging the individual user as well as society. Only minimal information exists on molecular changes in the brain that result from methamphetamine administered in patterns typical of human abusers. In order to investigate such changes, we examined the effect of methamphetamine on the transcriptional profile in brains of monkeys. Gene e...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره 6 شماره
صفحات -
تاریخ انتشار 2016