粘质沙雷氏菌在有氧和无氧条件下于血袋材料存在时的生长与存活情况。
Growth and survival of Serratia marcescens under aerobic and anaerobic conditions in the presence of materials from blood bags.
作者信息
Szewzyk U, Szewzyk R, Stenström T A
机构信息
Department for Water Microbiology, National Bacteriological Laboratory, Stockholm, Sweden.
出版信息
J Clin Microbiol. 1993 Jul;31(7):1826-30. doi: 10.1128/jcm.31.7.1826-1830.1993.
Several patients receiving blood transfusions during the summer of 1991 developed bacteremia after the transfusion. In all cases, the infection was caused by Serratia marcescens. The same strain of Serratia marcescens was isolated from the patients and from the outer surface of unfilled blood bags. The transport containers for the blood bags were made anoxic by using a catalyst in order to prevent microbial growth. The survival and growth of S. marcescens K202, which was isolated from the blood bags, was studied at different oxygen concentrations in deionized water containing materials derived from the blood bags. The rate of survival and growth of S. marcescens was highest under anaerobic conditions, in which growth occurred with all materials and even in deionized water alone. In contrast, S. marcescens did not survive in control cultures under semi-anaerobic and aerobic conditions. Growth was observed, however, under both aerobic and semi-anaerobic conditions in the presence of each of the tested blood bag materials. These findings indicate that the conditions in the transport containers for the blood bags were favorable for the survival and growth of S. marcescens.
1991年夏天，数名接受输血的患者在输血后发生了菌血症。所有病例中，感染均由粘质沙雷氏菌引起。从患者以及未使用的血袋外表面分离出了相同菌株的粘质沙雷氏菌。血袋的运输容器通过使用一种催化剂制成无氧环境，以防止微生物生长。对从血袋中分离出的粘质沙雷氏菌K202在含有血袋衍生材料的去离子水中不同氧浓度下的存活和生长情况进行了研究。粘质沙雷氏菌的存活和生长速率在厌氧条件下最高，在这种条件下，使用所有材料甚至仅在去离子水中它都能生长。相比之下，在半厌氧和好氧条件下，粘质沙雷氏菌在对照培养物中无法存活。然而，在存在每种测试血袋材料的情况下，在好氧和半厌氧条件下均观察到了生长。这些发现表明，血袋运输容器中的条件有利于粘质沙雷氏菌的存活和生长。
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