Anti-IL4 monoclonal antibody, clone 9E5

Background: Boeravinone B (BB), a therapeutic biomarker isolated from roots of Boerhavia diffusa, possesses immunomodulatory properties. Objective: In the present study, we investigated cytotoxicity and immunomodulatory effect of BB on human dendritic cells (DCs). Materials and Methods: In this study, buffy coat of human healthy volunteers was collected and the monocytes were separated. Effect of various concentrations of BB on DCs from induced differentiation of monocytes was studied on day 7 using ELISA microplate reader. The effect of BB on the immature DCs generated in the presence and absence of granulocyte-macrophage colony-stimulating factor (GM-CSF) and interleukin4 (IL4) was also noted. The binding of BB with the DC maturation markers CD80, CD83, and CD86 including antigen uptake were evaluated using fluorescent-activated cell sorter (FACS). Results: Viability of DCs was not affected at BB concentration of 100 mu g/ml. Phytohemagglutinin (PHA), BB showed increase in DC expression of CD80 expression up to 6.7% (P < 0.001) and 7.27% (P < 0.001) and increase in antigen uptake up to 7.67% (P < 0.001) and 8.87% (P < 0.001) when compared with dimethyl sulfoxide control. PHA and Boeravinone B supplemented with GM-CSF and IL4 showed increase of CD83 expression up to 6.86% (P < 0.01) and 4.63% (P < 0.05). However, PHA and BB showed increase of CD86 expression up to 6.6% (P < 0.01) and 6.73% (P < 0.01) when compared with control. Conclusion: The results justify that BB induced differentiation of monocytes into mature DCs.

BackgroundSignificant differences exist in the prevalence, spectrum, and severity of allergic diseases between developing and developed countries and between subpopulations within single countries. These discrepancies likely result from a complex interaction between genetic and environmental factors. However, the precise nature of the contribution of ethnicity to genetic differences in the predisposition to allergic disease is not yet fully understood. In particular, there is a paucity of literature regarding the genetic determinants of allergic disease in people of black African origin with little or no genetic admixture. ObjectiveWe aimed to analyze associations between 27 single nucleotide polymorphisms (SNPs) and allergy phenotypes in the local Xhosa population. MethodsA convenience sample of 213 Xhosa teenagers was enrolled at a local high school. Phenotypic data were collected in the form of a symptom questionnaire, skin prick tests for common food and aeroallergens, total serum IgE, and IgE to Ascaris lumbricoides. In addition, genotyping was performed to establish the prevalence of putative pro-inflammatory alleles. ResultsWe demonstrated several significant associations between polymorphisms and allergy phenotypes. In particular, 2 polymorphisms in the IL-10 gene (IL10 -592A>C and IL10 -1082A>G) and 1 in the IL-4 gene (IL4 -589C>T) showed multiple associations with allergic sensitization and asthma phenotypes. Other polymorphisms, across a multitude of genes with discrepant functions, showed less consistent associations. ConclusionThis study represents an important first step in genotype/phenotype association in this population. Further research is required to confirm or refute our findings.