Résumé
<p><b>OBJECTIVE</b>To examine the effect of Buyanghuanwu decoction (BYHWD) in inducing nerve proliferation in rats with sequelae of ischemic stroke.</p><p><b>METHODS</b>A rat model of ischemic stroke sequelae was established by means of craniectomy in which the right common carotid artery was ligated with 4-0 silk thread followed by cauterization of the right middle cerebral artery. Programmed electric shock was administered 24 h after the onset of ischemic stroke for 2 h daily for 20 consecutive days. The rats in sham operation group were not subjected to ligation of the right common carotid artery or right middle cerebral artery occlusion. The rats in the treatment groups were given oral BYHWD for 15 consecutive days. All the rats received repeated intraperitoneal injections of the cell proliferation-specific marker 5-bromodeoxyuridine (BrdU), and the intake of BrdU in the cerebral tissues was determined by immunohistochemistry.</p><p><b>RESULTS</b>The number of BrdU-immunoreactive cells in the cerebral tissues of BYHWD-treated rats was significantly greater than that in the untreated model group.</p><p><b>CONCLUSION</b>BYHWD can promote nerve proliferation in rats with ischemic stroke sequelae.</p>
Sujets)
Animaux , Femelle , Mâle , Rats , Administration par voie orale , Broxuridine , Métabolisme , Pharmacocinétique , Prolifération cellulaire , Médicaments issus de plantes chinoises , Utilisations thérapeutiques , Hippocampe , Métabolisme , Anatomopathologie , Immunohistochimie , Infarctus du territoire de l'artère cérébrale moyenne , Traitement médicamenteux , Neurones , Métabolisme , Anatomopathologie , Neuroprotecteurs , Utilisations thérapeutiques , Phytothérapie , Répartition aléatoire , Rat WistarRésumé
<p><b>OBJECTIVE</b>To explore the effect of Buyang Huanwu decoction (BHD) drug serum on rat's in vitro cultured cerebral cortical neuron apoptosis induced by hypoxia, and on the expression of p53 and p21 genes in hypoxia process.</p><p><b>METHODS</b>The model of hypoxia neuron apoptosis was established adopting Daniel method and treated with BHD drug serum. The neuron apoptosis rate was determined by flow cytometry with propidium iodide staining, the p53 and p21 gene expression was tested by immunohistochemical method with flow cytometry.</p><p><b>RESULTS</b>BHD could significantly inhibit the neuron apoptosis induced by hypoxia and down-regulate the expressions of p53 and p21 genes.</p><p><b>CONCLUSION</b>BHD shows inhibition on neuron hypoxia apoptosis and down-regulating of the p53 and p21 gene expression is one of its mechanisms.</p>