5 research outputs found

    壮族聚居的南乡镇享受自治权待遇问题的考察报告

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    本文对壮族聚居的南乡镇享受自治权待遇的情况作了全面的考察,分析了南乡镇没有充分享受自治权待遇的原因,并提出了对策

    Humanization of Therapeutic Antibody of One Hepatitis B Virus and Identification of Its Biological Activity

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    乙型肝炎病毒(HBV)感染是全球最为重要的公共卫生问题之一,目前临床上治疗HBV的药物在彻底清除病毒方面并没有取得满意的结果,因此迫切需要发展能; 有效清除病毒,尤其是能有效清除乙肝表面抗原(HBsAg)或大幅度降低HBsAg血清学水平的创新性治疗药物.筛选到一株针对HBV和HBsAg上一个; 特定表位的鼠单抗129G1,它能持续有效地清除转基因小鼠体内的HBV及HBsAg,有发展为治疗性抗体药物的潜力.为了降低129G1的免疫原性,采; 用互补决定区(CDR)移植的方式,利用噬菌体抗体库技术对这个鼠单抗进行了人源化,最终得到人源化抗体.人源化抗体与HBsAg的结合活性与嵌合抗体相; 当,抗体质量浓度为1.45; mug/mL时介导THP-1细胞吞噬率达到50%.在HBV转基因小鼠的实验中,获得的129G1人源化抗体能持续有效地抑制血清中HBV; DNA及清除HBsAg.Hepatitis B virus (HBV) infection is a major global health; problem.However,current treatments are not satisfactory in removing; virus thoroughly from patients,thus we need innovative treatment; strategies to remove virus continuously,especially in suppressing the; levels of HBsAg and HBV DNA in vivo profoundly and persistently.In this; study we discovered 129G1 mAb,which is a mouse monoclonal antibody; binding to a special epitope on the hepatitis B surface (HBsAg).129G1; mAb can suppress the levels of HBsAg and HBV DNA in vivo profoundly and; persistently,thus has the potential to be used in drugs of therapeutic; antibodies.In order to reduce the immunogenicity of 129G1 mAb,we; accomplished the humanization of 129G1 using complementarity determining; region (CDR)-grafting and framework region optimization to keep the; original biological function with phage display technology.129G1; humanized antibodies' binding activity with HBsAg is similar to 129G1; cAb.It makes the phagocytosis rate of THP-1 cells up to 50% at; concentration of 1.45 mug/mL.In HBV transgenic mice,the humanized 129G1; exhibited continuous ability in suppressing the HBV DNA in serum and; clearing HBsAg.国家自然科学基金; 福建省自然科学基

    膳食菊苣酸对过敏性哮喘小鼠的体内调节作用

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    目的探讨膳食添加菊苣酸对过敏性哮喘小鼠的体内调节作用。方法将16只5周龄雌性 BALB/c 小鼠随机分为4组:正常组(Control)、过敏性哮喘模型组(OVA)、膳食菊苣酸干预组(OVA+CA)和药物对照组(OVA+DEX)。使用卵清蛋白诱导过敏性哮喘小鼠模型,并全程饲喂含有400 mg/kg菊苣酸的饲料或不含菊苣酸的普通饲料。观察并记录小鼠体质量变化和鼻部症状,小鼠牺牲后检测肺组织病理学变化、外周血炎症细胞数量和比例,检测肺组织辅助性T细胞(Th)和细胞毒性T细胞(Tc)各亚型百分比。结果与过敏性哮喘模型组相比,膳食菊苣酸干预组的体质量减轻现象和挠鼻症状明显改善(P<0.05),外周血嗜酸性粒细胞数量、嗜酸性粒细胞/淋巴细胞比值显著下降(P<0.05),肺部炎症浸润情况以及杯状细胞增生情况缓解(P<0.05),肺组织Th2、Th17、Tc2、Tc17百分比降低(P<0.001),Th1和Tc1百分比则没有变化(P>0.05)。结论膳食补充菊苣酸能有效改善过敏性哮喘小鼠体内炎症
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