山东医药Issue(12)：5-9,5.DOI:10.3969/j.issn.1002-266X.2015.12.002
自然降尘与人体两种正常细菌的近尺寸作用分析
Near size reciprocity between natural dustfalls and two normal bacteria of human body in vitro
摘要
Abstract
Objective To analyze the near size reciprocity of five kinds of natural dustfalls from different areas on hu -man escherichia coli and staphylococcus epidermidis .Methods We chose five kinds of different natural dustfalls ( FC-1#, FC-2#, FC-15#, FC-18# and FC-21#) to analyze their features , grain diameter , grain size parameter and major chemical constituents.In separate culture medium where each dustfall interacted with escherichia coli and staphylococcus epidermi -dis, we observed the changes of elements such as bacterial counts , pH value, GLU, Mn, Pb, Fe, Si and the transition of bacterial morphology .Results FC-1# contained more CaO; FC-2#, FC-15#, FC-18#, FC-21# contained more SiO 2; and the LOI of FC-1#and FC-15# was higher than other dustfalls .The natural dust particle diameter was 0.3-1 μm.After five different natural dustfalls interacted with escherichia coli and staphylococcus , we compared it with that of each control group, bacterial colonies of FC-1#, FC-21# increased, GLU consume reduced and pH value increased ( P<0.05 or P<0.01).After interacting with escherichia coli , we compared it with that of the control group , the dissolution of Fe, Ca, Ni, Si and Al in FC-1# increased, only the dissolution of Al increased in FC-2#, the dissolution of Fe and Ca increased in FC-15#, and the dissolution of Ca increased in FC-18#and FC-21#(P<0.05 or P<0.01).After interacting with staphylo-coccus epidermidis , we compared it with that of the control group , the dissolution of Ca , Mg, Ni, Si and Al increased in FC-1#, only the dissolution of Al increased in FC-2#, the dissolution of Fe , Ca increased in FC-15#, the dissolution of Ca , Mg increased in FC-18#, and the dissolution of Ca increased in FC-21#(all P<0.01).The result of bacterial morphology indicated that the irregular shape of dustfalls enhanced cohesion with bacterial membranes .Conclusions Alkaline natural dustfalls with high level of Ca can promote the growth of escherichia coli and staphylococcus epidermidis .The smaller the particle of natural dust falls is , the easier dustfalls cohere with bacteria .关键词
自然降尘/大肠埃希菌/表皮葡萄球菌/元素Key words
natural dustfalls/escherichia coli/staphylococcus epidermidis/element分类
医药卫生引用本文复制引用
卢秀兰,董发勤,邓建军,代群威,曾娅莉..自然降尘与人体两种正常细菌的近尺寸作用分析[J].山东医药,2015,(12):5-9,5.基金项目
国家自然科学基金重点项目（41130746）；国家自然科学基金面上项目（41472046）。 （）
