Objective To test the allergen‐specific‐IgE in different districts for bronchial asthma children ,and analyze the re‐sults .Methods The blood samples of bronchial asthma children which selected from Heyuan City and Shenzhen City were detected by using German Ormond Western Blot Method reagents .Results The total positive rate of bronchial asthma children′s allergen‐specific‐IgE from Heyuan was 61 .7% .The positive rate of inhalation allergen was 43 .4% .The top three of inhalation allergens were house dust(41 .7% ) ,combination of mole(33 .3% ) ,the dog epithelium(20 .0% ) .The positive rate of food‐borne allergen was 36 .7% .The top three of food‐borne allergens were milk(33 .3% ) ,peanut(23 .3% ) ,beef(11 .7% ) .The total positive rate of bron‐chial asthma children′s allergen‐specific‐IgE from Shenzhen was 86 .7% .The positive rate of inhalation allergen was 73 .3% .The top three of inhalation allergens were combination of mole (63 .3% ) ,house dust (61 .7% ) ,The Liu/Yang/Elm combination (33 .3% ) .The positive rate of food‐borne allergen was 58 .3% .The top three of food‐borne allergens were shrimp(31 .7% ) ,crab (28 .3% ) ,the cod/lobster/scallop combination(21 .7% ) .Conclusion There were different parterns of the positive rate of bronchial asthma children′s allergen‐specific‐IgE in different districts .

ObjectiveTo observe the effect of Danshen injection （DAN） on platelet （PLT）-induced metastasis of breast cancer cells in vitro. MethodThe 3-（4，5-dimethylthiazol-2-yl）-2，5-diphenyltetrazolium bromide （MTT） assay was used to observe the effect of DAN on the growth of MDA-MB-231 cells in vitro. Oris™ migration assay was used to determine the effect of DAN （final mass concentrations 4， 8， 16 g·L^-1） on PLT （1.5×10¹⁰ cells/L）-induced migration of breast cancer cells in vitro. The effect of DAN on PLT-induced cell invasion was detected by Transwell assay. Immunofluorescence and Western blot were used to detect the effect of DAN on the protein expression associated with PLT-induced epithelial-mesenchymal transition （EMT）. In addition， enzyme-linked immune-sorbent assay （ELISA） was used to determine the effect of DAN （final mass concentrations 4， 8， 16， 32， 64 g·L^-1） on the secretion of transforming growth factor-β₁ （TGF-β₁）. Western blot was used to observe the effect of DAN on the expression of podoplanin （PDPN） protein in MDA-MB-231 cells induced by PLT. ResultCompared with the blank group， the DAN groups （32 and 64 g·L^-1） showed decreased A₅₇₀ （P<0.05， P<0.01）， and there was no significant difference in A₅₇₀ between DAN groups （4， 8， 16 g·L^-1）. Compared with the blank group， the PLT group showed increased cell migration and invasion， while DAN groups significantly inhibited PLT-induced cell migration and invasion. Compared with the blank group， the PLT group showed decreased expression of E-cadherin， while DAN could significantly reverse this effect of PLT. Compared with the blank group， the PLT group showed increased Slug and Snail protein expression （P<0.05， P<0.01）， while DAN significantly reversed Snail protein expression induced by PLT （P<0.05， P<0.01）. The content of TGF-β₁ in the PLT group increased （P<0.01）， while the secretion of TGF-β₁ induced by PLT decreased in the DAN groups （16， 32， and 64 g·L^-1） （P<0.05， P<0.01）， and the secretion of TGF-β₁ was not significantly affected in other DAN groups. PDPN protein expression in the PLT group increased （P<0.01）， while DAN could significantly inhibit PLT-induced PDPN expression （P<0.01）. ConclusionDAN can inhibit PLT-induced migration， invasion， and EMT of breast cancer cells. The mechanism may be related to the direct action between breast cancer cells and tumor cells by down-regulating PDPN expression and interfering with PLT and has nothing to do with the effect of TGF-β₁ secretion of PLT.