Alterations in mouse fecal flora associated with hyperbaric stress.
Alterations in mouse fecal flora associated with hyperbaric stress.
复制标题
与高压应激相关的小鼠粪便菌群的改变。
DOI：
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发表时间：
1981
期刊：
影响因子：
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通讯作者：
J. D. Gillmore
中科院分区：
文献类型：
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作者：
O. Daily;J. D. Gillmore
研究了高压应激对小鼠粪便微生物区系组成的影响。将小鼠暴露于35 ℃氦气氛中含氧浓度正常的35 ATA PO 2中以防止身体热量损失，或暴露于25 ℃的1 ATA氧-氦中。在严格厌氧条件下培养新鲜排出的粪粒，复制平板，然后在需氧和厌氧条件下培养。从实验到实验，培养的细菌总数有相当大的变化。然而，通过复制平板接种，在加压小鼠中，证明了专性厌氧菌的相对数量的一致减少，从平均71%减少到44%。distasonis类杆菌和B.多酸菌是从暴露于35和1 ATA的小鼠中最常见的专性厌氧菌种。物种分布未发生重大变化。
The effect of hyperbaric stress on the composition of fecal microflora was investigated in the mouse. Mice were exposed to 35 ATA with normoxic PO2 concentration in a helium atmosphere at 35 degrees C to prevent body heat loss or to 1 ATA oxygen-helium at 25 degrees C. Freshly discharged fecal pellets were cultured under strict anaerobic conditions, replica plated, and then cultured both aerobically and anaerobically. From experiment to experiment there was considerable variation in the total number of cultured bacteria. By replica plating, however, a consistent reduction in the relative numbers of obligate anaerobes was demonstrated, from a mean of 71% to 44%, in the pressurized mice. Bacteroids distasonis and B. multiacidus were the obligately anaerobic species most frequent identified from mice exposed at 35 and 1 ATA. Major changes in species distribution were not encountered.