Objective To investigate the correlation between toll-like receptor 9 (TLR9) gene 2848G/A polymorphism and primary antineutrophil cytoplasmic antibodies (ANCA) associated small vasculitis (AAV). Methods A case-control study was performed among 135 patients diagnosed with AAV and 140 disease-free control and we test the serum biochemical parameter. Polymorphism was analyzed by polymerase chain restricted fragments length polymorphism. As for statistic method, according to the character of data, we performed t-test, chi-square test, Spearman grade related analysis and one-way ANOVA. Results ① The frequencies of AA, GG, GA genotype of TLR9 2848 in AAV patients were 14.07%, 38.52%, and 47.71%, respectively; ② Significant increase in IgM was observed in AA genotype than GG+GA genotype in AAV patients (F=4.561, P<0.05). ③ There was no significant difference between AI and CI in AA, GA and GG genotype in AAV patients (F=2.115, 0.760, P>0.05). Conclusion AA, GA and GG genotypes are detected in TLR9 2848G/A in patients with AAV in Guangxi, without significant correlation with susceptibility to primary AAV in Guangxi.

Objective To investigate the effects of parenteral nutrition with ω-3 fatty acids on nutrition,inflammatory response,immunity and prognosis in criticallyill cancer patients.Methods 60 critically ill cancer patients were randomly divided into study group and the control group,30 cases each.All Patients were given isonitrogen and isocalorie enteral and parenteral nutrition for 2 weeks,which added ω-3 fatty acids in the study group by parenteral nutrition.The indicators of nutrition,inflammation,immune function were detected weekly.prognostic indicators (mortality,intensive care unit [ICU] length of stay,infectious complications) were compared.Results The indicators of nutrition,inflammatory reaction and immune function of study group were significantly improved than control group,and length of stay in ICU of study group was shorter than control group.There were less mortality and morbidity of infection complications in the study group compared with control group,but difference were not significant (P =0.13 and P=0.165).Conclusion ω-3 fatty acids supplementation of parenteral nutrition in critically ill cancer patients can improve nutritional status and immune function,reduce inflammatory response,shorten ICU length of stay,but not significantly improve ICU mortality and reduce infectious complications.