Studies on toxinogenesis in Vibrio cholerae. II. An vitro test for enterotoxin production.
نویسندگان
چکیده
An Elek test for enterotoxin-producing strains of Vibrio cholerae is described. Thirty-five out of 37 strains of classical V. cholerae produced positive reactions, but only 1 of 69 E1 Tor vibrio strains was reactive. Tox(-) mutants of V. cholerae were also unreactive in the Elek test.
منابع مشابه
Enhancement of enterotoxin production by carbon dioxide in Vibrio cholerae.
We found that Vibrio cholerae 569B produced much more cholera enterotoxin in the presence of added carbon dioxide than in its absence. An atmosphere of 10% carbon dioxide was optimal for maximal enterotoxin production.
متن کاملIn vitro production of enterotoxin and hemorrhagic principle by Vibrio cholerae, NAG.
In vitro production of enterotoxin by Vibrio cholerae, NAG isolated from human diarrheal cases in India, the Philippines and Sudan was tested. Of a total of 41 strains tested, 8 proved to produce the toxin characterized by permeability-increasing activity in the guinea pig skin. Characterization of the toxin produced by a representative strain was also made in comparison with cholera enterotoxi...
متن کاملIn vitro evaluation of capsaicin inhibitory effects on zonula occludens toxin in vibrio cholerae ATCC14035 strain
Background: Cholera is a potentially epidemic and life-threatening secretory diarrhoea characterized by voluminous watery stools, often accompanied by vomiting, and resulting in hypovolemic shock and acidosis. It is caused by certain strains of the species Vibrio cholerae which can also cause mild or in apparent infections. The aim of this study is the evaluation of Capsaicin, as a potential in...
متن کاملEffect of peptidic groups isolated from enzymic casein hydrolysate on growth and toxinogenesis of Clostridium welchii (perfringens).
Part I issued September 1970 PAGE Amended Nomenclature for Strains Related to Mycoplasma laidlawii. By D. G. FF. EDWARD and E. A. FREUNDT . Effect of Peptidic Groups Isolated from Enzymic Casein Hydrolysate on Growth and Toxinogenesis of Clostridiurn welchii (perfringens). By K . NEKVASILOVA, J. S~DLO and J. HAZA . Studies on the Mechanism of Inhibition of Growth of Vibrio cholerae by Erythrose...
متن کاملDetermination of ctxAB expression in Vibrio cholerae Classical and El Tor strains using Real-Time PCR
Cholera is an infection of the small intestines caused by the bacterium V. cholerae. It is a major cause of health threat and also a major cause of death worldwide and especially in developing countries. The major virulence factor produced by V. cholerae during infection is the cholera toxin. Total mRNA extraction and reverse transcription was performed for making ctxAB cDNA. Relative Real-Time...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Infection and immunity
دوره 9 1 شماره
صفحات -
تاریخ انتشار 1974