The detection of antiviral susceptibilities of HCMV clinical isolates to ganciclovir from the patients after hematopoietic stem cell transplantation / 中国基层医药

ABSTRACT

Objective To investigate the susceptibilities of HCMV clinical strains isolated to ganciclovir from the patients after hematopoietic stem cell transplantation.Methods Eight HCMV clinical isolates were isolated from the blood or the urine of hematopoietic stem cell transplantation recipients who had been treated with GCV.Tissue cell infection median dose(TCID50) were calculated by Reed-Muench method.Drug susceptibility was determined by MTT assay.Results TCID50 values of eight HCMV clinical strains were 10-4.12/0.1ml,10-4.29/0.1ml,10-4.3/0.1ml,10-4.4/0.1ml 10-4.42/0.1ml,10-4.5/0.1ml,10-4.52/0.1ml and 10-4.62/0.1ml respectively.50％ inhibitory concentration(IC50) to GCV of eight HCMV clinical strains were 0.638,1.438,0.965,0.698,0.482,1.167,1.519,1.511 mg/L respectively.Conclusion Our results suggest that resistant HCMV strains are not prevalent in Guangzhou.Continuous monitoring of HCMV is needed to understand the antiviral resistance status of the virus in patients after hematopoietic stem cell transplantation and guide its clinical management.