ObjectiveTo investigate the curative effect of recombinant bovine basic fibroblast gnowth factor (rbbFGF)in the treatment of senile diabetic foot ulcer and summarize the nursing methods.Methods 28elderly patients with senile diabetic foot ulcer were divided into the control group and the treatment group with 14 patients in each group.The control group was given medical treatment and local wound dressing change,the treatment group was given rbbFGF based upon the above method.The degree of granulation tissue maturity,wound healing time and therapeutic effects were compared between these two groups.The nursing measures were summarized.ResultsOn the 9th day and 13th day,granulation tissue maturity degree of the treatment group was better than the control group.On the 14th day,21th day and 28th day,endepidermis growth velocity of the treatment group was better than the control group.The wound healing time of the treatment group was (29.87±5.73) d and was significantly shorter than (38.49±6.58) d of thecontrol group.The therapeutic effect of the treatment group was better than that of control group on the 28th day.ConclusionsApplication of rbbFGF has good curative effect on senile diabetic foot ulcer and suitable nursing care methods contributes to recovery of elderly patients.

Objective To develop and evaluate the allele-specific real-time PCR(ASPCR) assay for the detection of minor HIV-1 variants. Methods We developed and evaluated the ASPCR assay, using the K103N mutation site as a model system. We constructed plasmids as standards and designed specific and non-specific primers to discriminate the wild-type and mutant plasmids in the real-time PCR using SYBR green as fluorescence reporter. And then we evaluated the sensitivity, accuracy, reproducibility of ASPCR assay and detected the control samples. Results The specific primer can discriminate the wild-type and mutant plasmids including resistant mutation successfully. The sensitivity of ASPCR assay can achieve less than 0.01% and the accuracy of this method is down to 0.1%. The Intra-assay coefficient of variation is less than 0.7 and the Inter-assay coefficient of variation is less than 1.6. Conclusion ASPCR is a sensitive, accurate and rapid method to detect the minor HIV-1 variants which have resistant mutations and it can be used widely in HIV research. ASPCR also can provide earlier and more resistant information to the clinical therapy.

Objective To isolate stable passage primary HIV-1 drug resistant strains and observe replication dynamics of the drug resistant isolates and evolvement tendency of the drug resistant mutations in vitro.Methods Peripheral blood mononuclear cells(PBMCs)from 15 AIDS patients receiving highly active antiretroviral therapy(HAART)were collected,and the primary HIV-1 stains were separated utilizing co-cultivated with PBMCs from normal people.HIV-1 pol genes from those strains were obtained by RT-PCR and sequenced.The drug resistant mutations were analyzed in the Stanford HIV Drug Resistance Database.Results Eight strong positive strains were isolated from 15 AIDS patients with viral loads higher than 1000 copies/ml,and two of them were drug resistant.Drug resistant mutations of the two strains were respectively K103N/K238T and M184V/K103N/Y181C/H221Y which show high-level resistance to NVP and 3TC/NVP,respectively.K103N,M184V,Y181C and H221Y exist stably in the environment without drug pressure,however,RT K238T reverted to K238.Conclusion Two drug resistant strains were successfully isolated in vitro without drug pressure.Strains with K103N shows superior fitness and can exist steadily.Strains with M184V and K103N/Y181C/H221Y can also replicate stably in vitro without drug pressure.NNRTI mutation K238T reproduces astatically,which suggests that RT 238 codon might revert gradually to wild genotype.