REVERSIBLE INACTIVATION OF TYPHUS RICKETTSIAE AT 0 C
نویسندگان
چکیده
منابع مشابه
Reversible Inactivation of Typhus Rickettsiae
Rickettsiae that have been frozen and thawed in isotonic salt solutions show greatly decreased toxicity for mice, hemolytic activity, respiration, and infectivity for eggs. All these properties can be partially restored by incubation of the rickettsiae in the presence of DPN and coenzyme A for 2 hours at 34 degrees C. The extent of both inactivation and of subsequent reactivation is markedly af...
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Partially purified suspensions of typhus rickettsiae have been shown to exhibit metabolic activity as evidenced by consumption of oxygen and production of carbon dioxide in the presence of glutamate. Similar activity at a much lower rate occurs in the presence of pyruvate. The rate of oxygen uptake was directly proportional to the concentration of viable rickettsiae, as estimated by their toxic...
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Although it has been known for some time that rickettsiae have an independent, if limited, oxidative metabolism (Bovarnick and Snyder, 1949), evidence of any synthetic activity on the part of these organisms has until recently been lacking. It was noted (Bovarnick, 1956) that they were capable through oxidative phosphorylation of forming ATP,2 a compound that appears to be a prerequisite for al...
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However, rather than suggesting that a single case report “contradicts” the anterior horn cell hypothesis, we suggest that WNV-associated flaccid paralysis be viewed as having a spectrum of causes, one of which certainly is poliomyelitis like illness. The neuropathologic findings in poliomyelitis (due to poliovirus, WNV, or other viruses) are not restricted focally to the anterior horn cells (5...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1957
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.73.1.56-62.1957