Recombinant Human IgG antibodies against Human Cytomegalovirus

Objective To study the passive immunization with human monoclonal antibodies as for prophylaxis of human cytomegalovirus （HCMV） infection. Methods Fab monoclonal antibodies to HCMV were recovered by repertoire cloning of mRNA from a HCMV infected individual. Antigen binding specificity, CDR sequence of VH and VL and neutralizing activity on HCMV AD169 stain were analyzed in vitro. The light and heavy chain Fd fragment genes of Fab antibodies were further cloned into a recombinant baculovirus expression vector pAC-K-Fc to express intact IgG. Secreted products were purified with affinity chromatography using protein G. Results SDS-PAGE and Western blot confirmed the expression of the intact IgG. Immuno-blotting and -precipitation were used to identify HCMV proteins. One Fab monoclonal antibody recognized a conformational HCMV protein. Conclusion IgG antibodies can neutralize the HCMV AD169 strain efficiently at a titer of 2.5 μg/mL and may prove valuable for passive immunoprophylaxis against HCMV infection in humans.     

浅谈肠道共生微生物与人类疾病

肠道共生微生物与人类健康和疾病密切相关。早期微生物暴露对肠道菌群的定植模式及以后生命过程中疾病的易患性产生深远影响。肠道菌群失调也是一些疾病的症状或诱发原因,比如过敏、肥胖、糖尿病甚至精神疾病。深入研究人类共生微生物与健康和疾病的关系,将为一些疾病的预防和治疗手段提供指导和方向。     

Human insulin

OBJECTIVE: Pancytopenia is an unusual complication of low-dose methotrexate therapy in rheumatoid arthritis. We report a near fatal case that followed an accidental overdose. CLINICAL FEATURES: An 80-year-old Caucasian woman with rheumatoid arthritis presented with pancytopenia and severe mucositis. She had taken her weekly methotrexate dose on four sequential days, due to an error in filling a "Dosette" box. INTERVENTION AND OUTCOME: Following treatment with piperacillin, gentamicin and folinic acid, she recovered completely. CONCLUSIONS: Low-dose methotrexate therapy is uncommonly associated with haematological toxicity. This generally occurs in patients with known risk factors for such reactions. Patient reliability should be considered if methotrexate therapy is contemplated.     

Human rights

What are human rights? In this article Enoch Powell, MP (a former Conservative Minister of Health), approaches this question through a critical discussion of Article 25 (I) of the United Nations Universal Declaration of Human Rights. Professor R S Downie in his accompanying commentary analyses Mr Powell''s statements and takes up in particular Mr Powell''s argument that claiming rights for one person entails compulsion on another person. In Professor Downie''s view there is nothing in Article 25 (I) that cannot embody acceptable moral rights, the commonly accepted interpretation of that Article of the UN Universal Declaration of Human Rights which many people think is wholly acceptable.