Japanese journal of bacteriology 

About: Japanese journal of bacteriology is an academic journal published by Japanese Society for Bacteriology. The journal publishes majorly in the area(s): Vibrio parahaemolyticus & Antigen. It has an ISSN identifier of 0021-4930. It is also open access. Over the lifetime, 999 publications have been published receiving 4599 citations. The journal is also known as: Japanese journal of bacteriology.

[a new selective isolation medium for the vibrio group; on a modified nakanishi's medium (tcbs agar medium)].

Abstract: It was reported by Nakanishi (1963) that a new selective plating medium consisting of ox bile, -thiosulphate, citrate, lactose, sucrose and skim milk is suitable for the selective isolation of both cholera vibrio and pathogenic halophilic bacteria (Vibrio parahaemolyticus).This composition was modified by the authors as follows and named TCBS agar medium peptone 10 g/l, yeast extract 5 g/l, Na. citrate 10 g/l, Na. thiosulphate 10 g/l, NaCl 10 g/l, Fe. citrate 1 g/l, ox bile (powder) 5 g/l, Na. cholate 3 g/l, sucrose 10 g/l, agar 15 g/l, B. T. B (0.2 % aqueous sol.) 20 ml/l, thymol blue (0.2 % aqueous sol.) 20 ml/l ; pH 8.6.After 24 hours incubation on this medium, freshly isolated strains of cholera vibrio and sucrose fermenting strains ofVibrio parahaemolyticusproduce large, smooth and yellow-coloured colonies, and sucrose-non-fermenting strains blue colonies.Gram positive bacteria, proteus and coli-group are strongly inhibited. Some strains of proteus can grow on this medium, but the colonies are so small and colorless that they are easily distinguishable.

Antibacterial and bactericidal activities of Japanese green tea

Abstract: We found that extracts of Japanese green tea leaves inhibited the growth of various bacteria causing diarrheal diseases. All tea samples tested showed antibacterial activity against Staphylococcus aureus, S. epidermidis, Vibrio cholerae O1, V. cholerae non O1. V. parahaemolyticus, V. mimicus, Campylobacter jejuni and Plesiomonas shigelloides. None of the tea samples had any effect on the growth of V. fluvialis, Aeromonas sobria, A. hydrophila, Pseudomonas aeruginosa, Salmonella enteritidis, enteroinvasive Escherichia coli, enterohemorrhagic E. coli, enteropathogenic E. coli, enterotoxigenic E. coli, Enterobacter cloacae or Yersinia enterocolitica. Salmonella and Shigella showed susceptibilities different depending on the kind of Japanese green tea. Japanese green tea showed also bactericidal activity over S. aureus, V. parahaemolyticus and even enteropathogenic E. coli which was not sensitive when tested by cup method. The bactericidal activity was shown even at the drinking concentration in daily life.

Pathogenicity of Enterococci.

Abstract: Enterococci belong to the group of lactic acid bacteria (LAB), and inhabit the gastrointestinal tracts of a wide variety of animals from insects and to human, and the commensal organism in humans and animals. The commensal/probiotic role of enterococci has evolved through thousands of years in mutual coexistence. Enterococcus have many favorable traits that have been appreciated in food fermentation and preservation, and many serve as probiotics to promote health. While lactobacillus have been shown to confer numerous benefits on and often regarded as health bringing organisms, enterococci have become more recognized as emerging human pathogens in recent years. Mac Callum and Hastings characterized an organism, now known to be Enterococcal faecalis, which was isolated from a lethal case of endocarditis on 1899. The report was the first detailed description of its pathogenic capabilities. Over the past few decades, multi-drug resistance enterococci have become as important health-care associated pathogen, and leading causes of drug resistance infection. The modern life style including the broad use of antibiotics in medical practice and animal husbandry have selected for the convergence of potential virulence factors to the specific enterococcus species such as E. faecium and E. faecalis. The development of modern medical care of intensive and invasive medical therapies and treatments for human disease, and existence of severe compromised patients in hospitals has contributed to the increased prevalence of these opportunistic organisms. The virulence factors converged in E. faecalis and E. faecium which have been isolated in nosocomial infections, include antibiotic resistance, extracellular proteins (toxins), extrachromosome and mobile genetic elements, cell wall components, biofilm formation, adherence factors, and colonization factor such as bacteriocin, etc. In these potential virulence factors, I presented characteristics of enterococcal conjugative plasmid, cytolysin, collagen binding protein of adhesion, bacteriocins, and drug resistances. I made reference to our original reports, and review books for this review. The review books are "Enterococci: from Commensals to Leading Causes of Drug Resistant Infection, NCBI Bookshelf. A service of the National Library of Medicine, National Institute of Health. Ed. by Michael S Gilmore, Don B Clewell, Yasuyoshi Ike, and Nathan Shankar", and "The Enterococci: Pathogenesis, Molecular Biology, and Antibiotic Resistance, Gilmore M., Clewell D., Courvadin P., Dunny G., Murray B., Rice L., (ed) 2002. ASM Press".