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Effects of pituitary adenylate cyclase activating polypeptide on CD4^+/CD8^+T cell levels after traumatic brain injury in a rat model

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World Journal of Emergency Medicine 2012年第4期3卷 294-298页

作者： Rong Hua Shan-shan Mao Yong-mei Zhang Fu-xing Chen Zhong-hai Zhou Jun-quan Liu Department of Emergency Medicine the 97th Hospital of PLA

BACKGROUND:The effect of pituitary adenylate cyclase activating polypeptide(PACAP)during traumatic brain injury(TBI) and whether it can modulate secondary injury has not been reported previously.The present study evaluated the potential protective effects of ventricular infusion of PACAP in a rat model of TBI.METHODS:Male Sprague Dawley rats were randomly divided into 3 treatment groups(n=6,each):sham-operated,vehicle(normal saline)^+TBI,and PACAP^+TBI.Normal saline or PACAP(1 ug/5uL) was administered intracerebroventricularly 20 minutes before TBI.Right parietal cortical contusion was produced via a weight-dropping method.Brains were extracted 24 hours after trauma.Histological changes in brains were examined by HE staining.The numbers of CD4^+ and CD8^+ T cells in blood and the spleen were detected via flow cytometry.RESULTS:In injured brain regions,edema,hemorrhage,inflammatory cell infiltration,and swollen and degenerated neurons were observed under a light microscope,and the neurons were disorderly arrayed in the hippocampi.Compared to the sham group,average CD4^+ CD8" lymphocyte counts in blood and the spleen were significantly decreased in rats that received TBI^+vehicle,and CD4^+ CD8^+ were increased.In rats administered PACAP prior to TBI,damage was attenuated as evidenced by significantly increased CD4^+,and decreased CD8^+,T lymphocytes in blood and the spleen.CONCLUSION:Pretreatment with PACAP may protect against TBI by influencing periphery T cellular immune function.

关键词： Traumatic brain injury pituitary adenylate cyclase activating polypeptide CD4^+T lymphocyte CD8^+T lymphocyte Rat Spleen Blood Flow cytometry

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Neuroprotective Effects of Brain-Gut Peptides: A Potential Therapy for Parkinson’s Disease

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Neuroscience Bulletin 2019年第6期35卷 1085-1096页

作者： Dong Dong Junxia Xie Jun Wang Department of Physiology and Pathophysiology Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders and State Key Disciplines: Physiology Medical College of Qingdao University

Parkinson's disease(PD) is the second most common neurodegenerative disease and is typically associated with progressive motor and non-motor dysfunctions.Currently, dopamine replacement therapy is mainly used to relieve the motor symptoms, while its long-term application can lead to various complications and does not cure the disease. Numerous studies have demonstrated that many brain-gut peptides have neuroprotective effects in vivo and in vitro, and may be a promising treatment for PD. In recent years, some progress has been made in studies on the neuroprotective effects of some newly-discovered braingut peptides, such as glucagon-like peptide 1, pituitary adenylate cyclase activating polypeptide, nesfatin-1, and ghrelin. However, there is still no systematic review on the neuroprotective effects common to these peptides. Thus,here we review the neuroprotective effects and the associated mechanisms of these four peptides, as well as other brain-gut peptides related to PD, in the hope of providing new ideas for the treatment of PD and related clinical research.

关键词： Parkinson's disease Glucagon-like peptide 1 pituitary adenylate cyclase activating polypeptide Nesfatin-1 Ghrelin

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