RESUMO
Tuberculosis (TB) remains one of the major infectious diseases in the world with a high incidence rate. Drug-resistant tuberculosis (DR-TB) is a key and difficult challenge in the prevention and treatment of TB. Early, rapid, and accurate diagnosis of DR-TB is essential for selecting appropriate and personalized treatment and is an important means of reducing disease transmission and mortality. In recent years, imaging diagnosis of DR-TB has developed rapidly, but there is a lack of consistent understanding. To this end, the Infectious Disease Imaging Group, Infectious Disease Branch, Chinese Research Hospital Association; Infectious Diseases Group of Chinese Medical Association of Radiology; Digital Health Committee of China Association for the Promotion of Science and Technology Industrialization, and other organizations, formed a group of TB experts across China. The conglomerate then considered the Chinese and international diagnosis and treatment status of DR-TB, China's clinical practice, and evidence-based medicine on the methodological requirements of guidelines and standards. After repeated discussion, the expert consensus of imaging diagnosis of DR-PB was proposed. This consensus includes clinical diagnosis and classification of DR-TB, selection of etiology and imaging examination [mainly X-ray and computed tomography (CT)], imaging manifestations, diagnosis, and differential diagnosis. This expert consensus is expected to improve the understanding of the imaging changes of DR-TB, as a starting point for timely detection of suspected DR-TB patients, and can effectively improve the efficiency of clinical diagnosis and achieve the purpose of early diagnosis and treatment of DR-TB.
RESUMO
AIM: To prepare monoclonal antibodies(mAbs) against human DcR3 and identify their characterization. METHODS: BALB/c mice were immunized with purified His-DcR3 protein, and mAbs against DcR3 which prepared by hybridoma technique were purified and identified by their specificity, subtype, titers via ELISA and Western blot. RESULTS: Five hybridoma cell lines secreting mAbs against human DcR3 were obtained, which were determined as IgG1 subtype and ascites titers of five mAbs against DcR3 reached 1x10(-5)-1x10(-7). Five mAbs were proved to recognize His-DcR3 protein specifically, one of which (1B1) could recognize SW480 cell. CONCLUSION: mAbs against DcR3 with high titers and specificity have been prepared and purified successfully, which laid a foundation for the study of DcR3 expression, distribution in tissu and development of ELISA kit.