It has been reported that distal cerebrospinal fluidcontacting neurons（dCSF-CNs）can be detected by immunohistochemical assay using cholera toxin subunit B-conjugated horseradish peroxidase（CBHRP）.In the present st...It has been reported that distal cerebrospinal fluidcontacting neurons（dCSF-CNs）can be detected by immunohistochemical assay using cholera toxin subunit B-conjugated horseradish peroxidase（CBHRP）.In the present study,another two methods with CB alone or CB-conjugated FITC（CB-FITC）were used,and the results from the three methods were compared.Adult Sprague-Dawley rats were randomly divided into three groups with CB-HRP,CB or CB-FITC.Tracers were diluted to 30%in artificial cerebrospinal fluid and injected separately（in a volume of 3μL）into the lateral ventricle.Animals from the CB-HRP and CB groups were perfused 48 h after surgery while animals from the CB-FITC group were perfused 1,3,6,12,24 or 48 h after surgery.The brain was sectioned（40μm）for immunofluorescence and five sections with positive neurons were selected from each rat for neuron counting.Three clusters of positive neurons in a＇Y-like＇distribution were detected ventral to the cerebral aqueduct of rats from the three groups.No significant difference was observed among the quantitative data.In the CB-FITC group,stable staining was detected even at 6 h after injection.Taken together,lateral ventricle injection of CB/CB-FITC is a useful method for labeling dCSFCNs in rats.The CB-FITC method makes dCSF-CNs labeling much simpler and more convenient.展开更多
目的观察A、C群脑膜炎球菌-b型流感嗜血杆菌(Meningococcal group A&C/Haemophilus influenzae type b,ACHib)多糖结合疫苗的免疫原性。方法采用开放、完全随机、盲态观察的方法,将1 800名观察对象分为临床试验组和对照组,每组各900...目的观察A、C群脑膜炎球菌-b型流感嗜血杆菌(Meningococcal group A&C/Haemophilus influenzae type b,ACHib)多糖结合疫苗的免疫原性。方法采用开放、完全随机、盲态观察的方法,将1 800名观察对象分为临床试验组和对照组,每组各900名,两组又按3个年龄段分为3～5、6～11和12～71月龄组。试验组仅经上臂三角肌肌内注射试验疫苗(ACHib多糖结合疫苗),对照组分别经左右上臂同时注射两种对照疫苗(A、C群脑膜炎球菌多糖结合疫苗和Hib结合疫苗)。3～5月龄组免疫3针,每针间隔1个月;6～11月龄组免疫2针,每针间隔1个月;12～71月龄组免疫1针。分别于免疫前、全程免疫后30～35 d采集静脉血,分离血清,采用功能性抗体杀菌力法检测A、C群脑膜炎球菌血清杀菌抗体滴度,间接ELISA法检测Hib抗体水平,并计算抗体阳转率及抗体增长倍数。结果免疫后,3个年龄段的试验组与对照组血清A、C群脑膜炎球抗体和Hib抗体阳转率差异均无统计学意义(P>0.05)。3个年龄段试验组与对照组易感和非易感人群A、C群脑膜炎球菌抗体滴度差异均无统计学意义(P均>0.05),而试验组Hib抗体水平低于对照组,且差异有统计学意义(P<0.001)。结论 ACHib多糖结合疫苗具有良好的免疫原性,可作为上述3种病原菌的预防制剂推广使用。展开更多
基金supported by grants from the National Natural Science Foundation of China (30871307, 81200862)the Fund of Science and Technology Innovation Team in Jiangsu Province, China (2009), Open Project Funds of the Jiangsu Key Laboratory of Brain Disease Bioinformation (Jsbl1107)the Natural Science Foundation of the Jiangsu Higher Education Institutions of China (12KJD320004)
文摘It has been reported that distal cerebrospinal fluidcontacting neurons（dCSF-CNs）can be detected by immunohistochemical assay using cholera toxin subunit B-conjugated horseradish peroxidase（CBHRP）.In the present study,another two methods with CB alone or CB-conjugated FITC（CB-FITC）were used,and the results from the three methods were compared.Adult Sprague-Dawley rats were randomly divided into three groups with CB-HRP,CB or CB-FITC.Tracers were diluted to 30%in artificial cerebrospinal fluid and injected separately（in a volume of 3μL）into the lateral ventricle.Animals from the CB-HRP and CB groups were perfused 48 h after surgery while animals from the CB-FITC group were perfused 1,3,6,12,24 or 48 h after surgery.The brain was sectioned（40μm）for immunofluorescence and five sections with positive neurons were selected from each rat for neuron counting.Three clusters of positive neurons in a＇Y-like＇distribution were detected ventral to the cerebral aqueduct of rats from the three groups.No significant difference was observed among the quantitative data.In the CB-FITC group,stable staining was detected even at 6 h after injection.Taken together,lateral ventricle injection of CB/CB-FITC is a useful method for labeling dCSFCNs in rats.The CB-FITC method makes dCSF-CNs labeling much simpler and more convenient.
文摘目的观察A、C群脑膜炎球菌-b型流感嗜血杆菌(Meningococcal group A&C/Haemophilus influenzae type b,ACHib)多糖结合疫苗的免疫原性。方法采用开放、完全随机、盲态观察的方法,将1 800名观察对象分为临床试验组和对照组,每组各900名,两组又按3个年龄段分为3～5、6～11和12～71月龄组。试验组仅经上臂三角肌肌内注射试验疫苗(ACHib多糖结合疫苗),对照组分别经左右上臂同时注射两种对照疫苗(A、C群脑膜炎球菌多糖结合疫苗和Hib结合疫苗)。3～5月龄组免疫3针,每针间隔1个月;6～11月龄组免疫2针,每针间隔1个月;12～71月龄组免疫1针。分别于免疫前、全程免疫后30～35 d采集静脉血,分离血清,采用功能性抗体杀菌力法检测A、C群脑膜炎球菌血清杀菌抗体滴度,间接ELISA法检测Hib抗体水平,并计算抗体阳转率及抗体增长倍数。结果免疫后,3个年龄段的试验组与对照组血清A、C群脑膜炎球抗体和Hib抗体阳转率差异均无统计学意义(P>0.05)。3个年龄段试验组与对照组易感和非易感人群A、C群脑膜炎球菌抗体滴度差异均无统计学意义(P均>0.05),而试验组Hib抗体水平低于对照组,且差异有统计学意义(P<0.001)。结论 ACHib多糖结合疫苗具有良好的免疫原性,可作为上述3种病原菌的预防制剂推广使用。
