The Chinese herbal formula Tongluo fiunao, containing the active components Panax notogin- seng and Gardenia jasminoides, has recently been patented and is in use clinically. It is known to be neuroprotective in cereb...The Chinese herbal formula Tongluo fiunao, containing the active components Panax notogin- seng and Gardenia jasminoides, has recently been patented and is in use clinically. It is known to be neuroprotective in cerebral ischemia, but the underlying pathway remains poorly understood. In the present study, we established a rat model of cerebral ischemia by occlusion of the middle cerebral artery, and administered Tongluo Jiunao, a positive control （Xuesai Tong, containing Panax notoginseng） or saline intraperitoneally to investigate the pathway involved in the action of TongIuo fiunao injection. 2,3,5-Triphenyltetrazolium chloride （TTC） staining showed that the cerebral infarct area was significantly smaller in model rats that received Tongluo fiunao than in those that received saline. Enzyme-linked immunosorbent assay revealed significantly greater expression of neurotrophin 3 and growth-associated protein 43 in ischemic cerebral tissue, and serum levels of neurotrophin 3, in the Tongluo Jiunao group than in the saline group. The reverse transcription polymerase chain reaction and immunohistochemical staining showed that after treatment with Tongluo fiunao or Xuesai Tong, tropomyosin-related kinase C gene expression and immunoreactivity were significantly elevated compared with saline, with the greatest expression observed after Tongluo Jiunao treatment. These findings suggest that Tongluo Jiunao injection exerts a neuroprotective effect in rats with cerebral ischemia by activating the neurotrophin 3/ tropomyosin-related kinase C pathway.展开更多
The neurotrophin-Trk receptor pathway is an intrinsic pathway to relieve damage to the central nervous system. The present study observed the effects of Tongluo Jiunao （TLJN）, which comprises Panax Notoginseng and G...The neurotrophin-Trk receptor pathway is an intrinsic pathway to relieve damage to the central nervous system. The present study observed the effects of Tongluo Jiunao （TLJN）, which comprises Panax Notoginseng and Gardenia Jasminoides, on expression of brain-derived neurotrophic factor （BDNF） and tropomyosin-related kinase B （TrkB） in a rat model of focal cerebral ischemic injury. Xue Sai Tong （XST）, comprising Panax Notoginseng, served as the positive control. Mechanisms of neuroprotection were analyzed following TLJN injection. Following establishment of the middle cerebral artery occlusion models, TLJN and XST were intraperitoneally injected, and 2, 3 5-triphenyltetrazolium chloride staining results revealed that TLJN injection reduced infarct volume, suggesting that TLJN exerted a neuroprotective effect. Enzyme-linked immunosorbent assay results showed that TLJN elevated BDNF and growth associated protein-43 expression in ischemic brain tissues, as well as serum BDNF levels. Reverse-transcription polymerase chain reaction and western blot results showed that TLJN injection did not affect TrkB expression in the ischemic brain tissues of rats. These results suggested that TLJN injection reduced damage to ischemic brain tissues and increased BDNF expression. In addition, TLJN injection resulted in better promoting effects on neurotrophic factor expression compared with XST.展开更多
目的探讨通络救脑口服液对快速老化模型(SAMP8)小鼠晚期糖基化终末产物受体(RAGE)和淀粉样蛋白β(Aβ)表达的影响。方法 24只SAMP8小鼠随机分为模型组、通络救脑高、低剂量组(9,6 m L·kg^(-1)·d^(-1)),另设抗快速衰老亚系1(SA...目的探讨通络救脑口服液对快速老化模型(SAMP8)小鼠晚期糖基化终末产物受体(RAGE)和淀粉样蛋白β(Aβ)表达的影响。方法 24只SAMP8小鼠随机分为模型组、通络救脑高、低剂量组(9,6 m L·kg^(-1)·d^(-1)),另设抗快速衰老亚系1(SAMR1)小鼠对照组(正常对照组),连续灌胃给药21 d。取海马区脑组织,分别采用酶联免疫吸附法(ELISA)和免疫组织化学法检测小鼠大脑海马内Aβ以及RAGE的表达。结果与模型组比较,通络救脑高、低剂量组海马区脑组织RAGE和Aβ表达降低(P<0.01),RAGE蛋白含量明显降低(P<0.01)。结论通络救脑口服液可通过抑制海马区脑组织RAGE和Aβ的表达,以减轻RAGE和Aβ介导的神经病理损伤作用。展开更多
基金supported by grants from the National Basic Research Program(973 Program),No.2012CB518602the National Natural Science Foundation of China,No.30830120a grant from Beijing University of Chinese Medicine in China
文摘The Chinese herbal formula Tongluo fiunao, containing the active components Panax notogin- seng and Gardenia jasminoides, has recently been patented and is in use clinically. It is known to be neuroprotective in cerebral ischemia, but the underlying pathway remains poorly understood. In the present study, we established a rat model of cerebral ischemia by occlusion of the middle cerebral artery, and administered Tongluo Jiunao, a positive control （Xuesai Tong, containing Panax notoginseng） or saline intraperitoneally to investigate the pathway involved in the action of TongIuo fiunao injection. 2,3,5-Triphenyltetrazolium chloride （TTC） staining showed that the cerebral infarct area was significantly smaller in model rats that received Tongluo fiunao than in those that received saline. Enzyme-linked immunosorbent assay revealed significantly greater expression of neurotrophin 3 and growth-associated protein 43 in ischemic cerebral tissue, and serum levels of neurotrophin 3, in the Tongluo Jiunao group than in the saline group. The reverse transcription polymerase chain reaction and immunohistochemical staining showed that after treatment with Tongluo fiunao or Xuesai Tong, tropomyosin-related kinase C gene expression and immunoreactivity were significantly elevated compared with saline, with the greatest expression observed after Tongluo Jiunao treatment. These findings suggest that Tongluo Jiunao injection exerts a neuroprotective effect in rats with cerebral ischemia by activating the neurotrophin 3/ tropomyosin-related kinase C pathway.
文摘The neurotrophin-Trk receptor pathway is an intrinsic pathway to relieve damage to the central nervous system. The present study observed the effects of Tongluo Jiunao （TLJN）, which comprises Panax Notoginseng and Gardenia Jasminoides, on expression of brain-derived neurotrophic factor （BDNF） and tropomyosin-related kinase B （TrkB） in a rat model of focal cerebral ischemic injury. Xue Sai Tong （XST）, comprising Panax Notoginseng, served as the positive control. Mechanisms of neuroprotection were analyzed following TLJN injection. Following establishment of the middle cerebral artery occlusion models, TLJN and XST were intraperitoneally injected, and 2, 3 5-triphenyltetrazolium chloride staining results revealed that TLJN injection reduced infarct volume, suggesting that TLJN exerted a neuroprotective effect. Enzyme-linked immunosorbent assay results showed that TLJN elevated BDNF and growth associated protein-43 expression in ischemic brain tissues, as well as serum BDNF levels. Reverse-transcription polymerase chain reaction and western blot results showed that TLJN injection did not affect TrkB expression in the ischemic brain tissues of rats. These results suggested that TLJN injection reduced damage to ischemic brain tissues and increased BDNF expression. In addition, TLJN injection resulted in better promoting effects on neurotrophic factor expression compared with XST.
文摘目的探讨通络救脑口服液对快速老化模型(SAMP8)小鼠晚期糖基化终末产物受体(RAGE)和淀粉样蛋白β(Aβ)表达的影响。方法 24只SAMP8小鼠随机分为模型组、通络救脑高、低剂量组(9,6 m L·kg^(-1)·d^(-1)),另设抗快速衰老亚系1(SAMR1)小鼠对照组(正常对照组),连续灌胃给药21 d。取海马区脑组织,分别采用酶联免疫吸附法(ELISA)和免疫组织化学法检测小鼠大脑海马内Aβ以及RAGE的表达。结果与模型组比较,通络救脑高、低剂量组海马区脑组织RAGE和Aβ表达降低(P<0.01),RAGE蛋白含量明显降低(P<0.01)。结论通络救脑口服液可通过抑制海马区脑组织RAGE和Aβ的表达,以减轻RAGE和Aβ介导的神经病理损伤作用。
