Houang E T, Sormunen R T, Lai L, Chan C Y, Leong A S
Department of Microbiology, Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong.
J Clin Pathol. 1998 Oct;51(10):786-8. doi: 10.1136/jcp.51.10.786.
An Acinetobacter baumannii isolate survived desiccation beyond 30 days and an Acinetobacter lwoffii isolate up to 21 days. For both species, desiccation resulted in a significant increase in the proportion of round cells (A baumannii, 40% to 80%; A lwoffii, 51% to 63%) and a significant decrease in rod shaped cells (A baumannii, 58% to 13%; A lwoffii, 46% to 34%). Electronmicroscopic examination showed that there was also a corresponding significant increase in the cell wall thickness (A baumannii, up to 53%; A lwoffii, up to 26%). Desiccated A baumannii cells became more electron-dense and had significantly thicker cell walls (x1.3) than those of A lwoffii. Cell wall structures of A baumannii strains with different abilities to resist desiccation deserve further study.
一株鲍曼不动杆菌分离株在干燥环境下存活超过30天，一株沃氏不动杆菌分离株存活长达21天。对于这两个菌种，干燥导致圆形细胞比例显著增加（鲍曼不动杆菌，从40%增至80%；沃氏不动杆菌，从51%增至63%），而杆状细胞显著减少（鲍曼不动杆菌，从58%减至13%；沃氏不动杆菌，从46%减至34%）。电子显微镜检查显示，细胞壁厚度也相应显著增加（鲍曼不动杆菌，增加至53%；沃氏不动杆菌，增加至26%）。干燥后的鲍曼不动杆菌细胞电子密度更高，细胞壁比沃氏不动杆菌的显著更厚（厚1.3倍）。不同抗干燥能力的鲍曼不动杆菌菌株的细胞壁结构值得进一步研究。
