We previously showed that the repair of bone defects is regulated by neural and vascular signals. In the present study, we examined the effect of topically applied β-nerve growth factor（β-NGF） on neurogenesis and ...We previously showed that the repair of bone defects is regulated by neural and vascular signals. In the present study, we examined the effect of topically applied β-nerve growth factor（β-NGF） on neurogenesis and angiogenesis in critical-sized bone defects filled with collagen bone substitute. We created two symmetrical defects, 2.5 mm in diameter, on either side of the parietal bone of the skull, and filled them with bone substitute. Subcutaneously implanted osmotic pumps were used to infuse 10 μgβ-NGF in PBS（β-NGF ＋ PBS） into the right-hand side defect, and PBS into the left（control） defect, over the 7 days following surgery. Immunohistochemical staining and hematoxylin-eosin staining were carried out at 3, 7, 14, 21 and 28 days postoperatively. On day 7, expression of β III-tubulin was lower on the β-NGF ＋ PBS side than on the control side, and that of neurofilament 160 was greater. On day 14, β III-tubulin and protein gene product 9.5 were greater on the β-NGF ＋ PBS side than on the control side. Vascular endothelial growth factor expression was greater on the experimental side than the control side at 7 days, and vascular endothelial growth factor receptor 2 expression was elevated on days 14 and 21, but lower than control levels on day 28. However, no difference in the number of blood vessels was observed between sides. Our results indicate that topical application of β-NGF promoted neurogenesis, and may modulate angiogenesis by promoting nerve regeneration in collagen bone substitute-filled defects.展开更多
目的探讨帕金森病(PD)患者皮肤小神经纤维的病理特点。方法收集16例临床确诊并符合纳入和排除标准的PD患者和性别年龄匹配的16例健康对照者的临床资料和神经电生理结果,对PD症状及周围神经病变进行评估。所有受试者行小腿皮肤活组织检查...目的探讨帕金森病(PD)患者皮肤小神经纤维的病理特点。方法收集16例临床确诊并符合纳入和排除标准的PD患者和性别年龄匹配的16例健康对照者的临床资料和神经电生理结果,对PD症状及周围神经病变进行评估。所有受试者行小腿皮肤活组织检查,通过标准化泛轴突标记蛋白基因产物9.5(PGP9.5)和生长相关蛋白43(GAP-43)两种免疫组织化学染色定量表皮内神经纤维密度(Intraepidermal nerve fiber density,IENFD),并进行统计学分析。结果16例PD患者,男7例,女9例,年龄(66.000±9.675)岁,Hoehn and Yahr(H-Y)分期(1.906±0.612)。PD组尺神经、正中神经、腓肠神经远端感觉潜伏期较对照组延长(P<0.05),余2组间神经电生理结果未见统计学差异(P>0.05)。PD组PGP9.5和GAP-43染色下IENFD值均低于健康对照组(8.618±3.984根/mm vs18.198±5.387根/mm,4.543±3.363根/mm vs 14.174±5.485根/mm;P<0.05)。两种染色下IENFD值与PD的临床症状有相关性。GAP-43/PGP9.5染色下IENFD比值在2组之间无统计学差异(0.575±0.380 vs 0.787±0.218;P>0.05)。结论PD患者存在周围神经损害,以小神经纤维受累为主,大直径神经纤维受累不明显,皮肤活检是诊断PD小纤维神经病较为可靠的方法。展开更多
目的:探讨沉香化气胶囊对糖尿病(diabetes mellitus,DM)大鼠小肠Cajal间质细胞(interstitial cells of Cajal,ICC)、肌间神经丛的影响.方法:将健康♂SD大鼠分为正常对照组、DM模型组、DM模型+中药组.大鼠一次性腹腔注射(ip)链脲佐菌素(S...目的:探讨沉香化气胶囊对糖尿病(diabetes mellitus,DM)大鼠小肠Cajal间质细胞(interstitial cells of Cajal,ICC)、肌间神经丛的影响.方法:将健康♂SD大鼠分为正常对照组、DM模型组、DM模型+中药组.大鼠一次性腹腔注射(ip)链脲佐菌素(STZ,60mg/kg)造模,选取成功模型,DM模型+中药组每天给予中药灌胃,模型组和正常对照组每天给予同等容量的蒸馏水,持续灌胃4wk.所有大鼠干预4wk结束后,给予印度墨汁灌胃测定小肠传输速率,利用免疫组织化学和图像分析观察十二指肠c-Kit、突触素(synaptophysin,Syn)、蛋白基因产物9.5(protein gene product 9.5,PGP9.5)的表达.结果:灌胃4wk后,DM模型+中药组小肠传输速率均比DM模型组明显增加(71.26±5.22 vs 45.52±6.42,P<0.01),仍低于对照组(71.26±5.22 vs 80.40±7.33,P<0.05);DM模型+中药组c-Kit、突触素、PGP9.5的阳性产物面积和吸光度值均比DM模型组明显增加(443.28±24.40 vs 358.83±35.03,832.33±58.78 vs 488.83±58.56,889.17±82.75 vs 445.17±64.06,0.16±0.02 vs 0.13±0.02,0.25±0.02 vs 0.16±0.01,0.24±0.02 vs 0.15±0.01,均P<0.01),仍低于正常对照组(443.28±24.40 vs 557.28±42.35,P<0.01;832.33±58.78 vs 937.67±101.23,P<0.05;889.17±82.75 vs 1050.50±90.22,P<0.01;0.16±0.02 vs 0.18±0.02,P<0.05;0.25±0.02 vs 0.29±0.03,P<0.01;0.24±0.02 vs 0.27±0.02,P<0.01).结论:沉香化气胶囊可以促进糖尿病大鼠小肠肌间神经丛c-Kit、突触素和PGP9.5的表达,提示对受损的DM大鼠小肠ICC、肌间神经丛有部分恢复作用,从而对糖尿病大鼠的胃肠动力障碍有一定的改善效应.展开更多
基金supported by the Fujian Foundation for Distinguished Young Scientists in China,No.Grant#2060203the National Natural Science Foundation of China,No.31070838
文摘We previously showed that the repair of bone defects is regulated by neural and vascular signals. In the present study, we examined the effect of topically applied β-nerve growth factor（β-NGF） on neurogenesis and angiogenesis in critical-sized bone defects filled with collagen bone substitute. We created two symmetrical defects, 2.5 mm in diameter, on either side of the parietal bone of the skull, and filled them with bone substitute. Subcutaneously implanted osmotic pumps were used to infuse 10 μgβ-NGF in PBS（β-NGF ＋ PBS） into the right-hand side defect, and PBS into the left（control） defect, over the 7 days following surgery. Immunohistochemical staining and hematoxylin-eosin staining were carried out at 3, 7, 14, 21 and 28 days postoperatively. On day 7, expression of β III-tubulin was lower on the β-NGF ＋ PBS side than on the control side, and that of neurofilament 160 was greater. On day 14, β III-tubulin and protein gene product 9.5 were greater on the β-NGF ＋ PBS side than on the control side. Vascular endothelial growth factor expression was greater on the experimental side than the control side at 7 days, and vascular endothelial growth factor receptor 2 expression was elevated on days 14 and 21, but lower than control levels on day 28. However, no difference in the number of blood vessels was observed between sides. Our results indicate that topical application of β-NGF promoted neurogenesis, and may modulate angiogenesis by promoting nerve regeneration in collagen bone substitute-filled defects.
文摘目的探讨帕金森病(PD)患者皮肤小神经纤维的病理特点。方法收集16例临床确诊并符合纳入和排除标准的PD患者和性别年龄匹配的16例健康对照者的临床资料和神经电生理结果,对PD症状及周围神经病变进行评估。所有受试者行小腿皮肤活组织检查,通过标准化泛轴突标记蛋白基因产物9.5(PGP9.5)和生长相关蛋白43(GAP-43)两种免疫组织化学染色定量表皮内神经纤维密度(Intraepidermal nerve fiber density,IENFD),并进行统计学分析。结果16例PD患者,男7例,女9例,年龄(66.000±9.675)岁,Hoehn and Yahr(H-Y)分期(1.906±0.612)。PD组尺神经、正中神经、腓肠神经远端感觉潜伏期较对照组延长(P<0.05),余2组间神经电生理结果未见统计学差异(P>0.05)。PD组PGP9.5和GAP-43染色下IENFD值均低于健康对照组(8.618±3.984根/mm vs18.198±5.387根/mm,4.543±3.363根/mm vs 14.174±5.485根/mm;P<0.05)。两种染色下IENFD值与PD的临床症状有相关性。GAP-43/PGP9.5染色下IENFD比值在2组之间无统计学差异(0.575±0.380 vs 0.787±0.218;P>0.05)。结论PD患者存在周围神经损害,以小神经纤维受累为主,大直径神经纤维受累不明显,皮肤活检是诊断PD小纤维神经病较为可靠的方法。
文摘目的:探讨沉香化气胶囊对糖尿病(diabetes mellitus,DM)大鼠小肠Cajal间质细胞(interstitial cells of Cajal,ICC)、肌间神经丛的影响.方法:将健康♂SD大鼠分为正常对照组、DM模型组、DM模型+中药组.大鼠一次性腹腔注射(ip)链脲佐菌素(STZ,60mg/kg)造模,选取成功模型,DM模型+中药组每天给予中药灌胃,模型组和正常对照组每天给予同等容量的蒸馏水,持续灌胃4wk.所有大鼠干预4wk结束后,给予印度墨汁灌胃测定小肠传输速率,利用免疫组织化学和图像分析观察十二指肠c-Kit、突触素(synaptophysin,Syn)、蛋白基因产物9.5(protein gene product 9.5,PGP9.5)的表达.结果:灌胃4wk后,DM模型+中药组小肠传输速率均比DM模型组明显增加(71.26±5.22 vs 45.52±6.42,P<0.01),仍低于对照组(71.26±5.22 vs 80.40±7.33,P<0.05);DM模型+中药组c-Kit、突触素、PGP9.5的阳性产物面积和吸光度值均比DM模型组明显增加(443.28±24.40 vs 358.83±35.03,832.33±58.78 vs 488.83±58.56,889.17±82.75 vs 445.17±64.06,0.16±0.02 vs 0.13±0.02,0.25±0.02 vs 0.16±0.01,0.24±0.02 vs 0.15±0.01,均P<0.01),仍低于正常对照组(443.28±24.40 vs 557.28±42.35,P<0.01;832.33±58.78 vs 937.67±101.23,P<0.05;889.17±82.75 vs 1050.50±90.22,P<0.01;0.16±0.02 vs 0.18±0.02,P<0.05;0.25±0.02 vs 0.29±0.03,P<0.01;0.24±0.02 vs 0.27±0.02,P<0.01).结论:沉香化气胶囊可以促进糖尿病大鼠小肠肌间神经丛c-Kit、突触素和PGP9.5的表达,提示对受损的DM大鼠小肠ICC、肌间神经丛有部分恢复作用,从而对糖尿病大鼠的胃肠动力障碍有一定的改善效应.
