Establishment and Preliminary Application Analysis of A Multiplex Detection Method for Influenza A and B Virus Antigen Based on Quantum Dot-encoded Microsphere Flow Cytometry Technology / 现代检验医学杂志

Objective To establish a multiplex assay method for the simultaneous detection of FluA and FluB virus(IBV)antigen based on the flow cytometry(FCM)quantum dot-encoded bead technologies,laying the foundation for the assay of multiple respiratory virus biomarkers.Methods Coupling was performed for FluA and FluB nucleoprotein(NP)monoclonal antibodies using self-made quantum dot-encoded beads,separately.FCM was used to detect known concentrations of FluA and FluB antigens separately and simultaneously,optimize the detection conditions,and establish a joint detection method for FluA and FluB antigens.Compared with the quantitative real-time PCR(qPCR)method,clinical samples were used to evaluate the clinical performance of this joint detection method.Results The joint detection method for FluA and FluB antigens was established,with detection limits of 26.1 pg/ml and 10.7 pg/ml,respectively,and measurement ranges of 15.3～250 000 pg/ml.The joint detection method for clinical sample evaluation was well correlated with the qPCR,with a positive coincidence rate of 57.4%,a negative coincidence rate of 100%,and a total coincidence rate of 71.6%.In addition,the joint detection method was superior to colloidal gold immunochromatographic strip assay commonly used in clinical practice(positive coincidence rate of 56.49%,negative coincidence rate of 99.75%).Conclusion The FCM quantum dot-encoded bead multiplex assay can be used for the joint detection of FluA and FluB antigens,which have a high sensitivity,good specificity and wide detection range.It may lay a good foundation for the multiplex detection of common respiratory viruses,and has clinical application prospects.

Association of human rhinovirus infection with asthma in children / 中华实验和临床病毒学杂志

Asthma is a serious global health problem affecting all age groups. It has been recognized as a complex disease resulting from interactions between multiple genetic and environmental factors. Human rhinovirus (HRV) infections in early life constitute a major environmental risk factor for the development of childhood asthma and the most common cause of asthma exacerbation. HRV-C, the novel HRV, using cadherin-related family member 3 (CDHR3) as receptors, plays a key role in the development of childhood asthma. This review discusses the role and the potential underlying mechanisms of HRV infections in the development and exacerbation of childhood asthma based on recent clinical and experimental evidence.