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Selective medium for isolation of Bacteroides gracilis. 1990

K Lee, and E J Baron, and P Summanen, and S M Finegold
Department of Clinical Pathology, Wonju Medical College, Yonsei University, Korea.

A new medium selective for Bacteroides gracilis was developed. The medium is tryptic soy agar (Difco Laboratories, Detroit, Mich.) containing nalidixic acid, teicoplanin, sodium formate, sodium fumarate, and potassium nitrate. All 18 strains of B. gracilis tested grew with only minimal inhibition. Most of the other 214 organisms tested, including most Bacteroides species, other anaerobes, and a substantial number of facultative anaerobes, were significantly inhibited by the medium. In a diagnostic study of 49 clinical specimens (28 patients with intra-abdominal infection, mostly gangrenous or perforated appendicitis), four strains of B. gracilis were isolated (from 4 different patients) on B. gracilis selective agar but were not detected on standard media.

UI MeSH Term Description Entries
D009268 Nalidixic Acid A synthetic 1,8-naphthyridine antimicrobial agent with a limited bacteriocidal spectrum. It is an inhibitor of the A subunit of bacterial DNA GYRASE. Nalidixin,Nalidixate Sodium,Nalidixate Sodium Anhydrous,Nevigramon,Sodium Nalidixic Acid, Anhydrous,Sodium Nalidixic Acid, Monohydrate,Acid, Nalidixic,Anhydrous, Nalidixate Sodium,Sodium Anhydrous, Nalidixate,Sodium, Nalidixate
D009566 Nitrates Inorganic or organic salts and esters of nitric acid. These compounds contain the NO3- radical. Nitrate
D011492 Protein Hydrolysates A complex mixture of OLIGOPEPTIDES, PEPTIDES, and free AMINO ACIDS that are produced by partial or extensive hydrolysis. Protein Hydrolysate,Hydrolysate, Protein,Hydrolysates, Protein
D002364 Caseins A mixture of related phosphoproteins occurring in milk and cheese. The group is characterized as one of the most nutritive milk proteins, containing all of the common amino acids and rich in the essential ones. alpha-Casein,gamma-Casein,AD beta-Casein,Acetylated, Dephosphorylated beta-Casein,Casein,Casein A,K-Casein,Sodium Caseinate,alpha(S1)-Casein,alpha(S1)-Casein A,alpha(S1)-Casein B,alpha(S1)-Casein C,alpha(S2)-Casein,alpha-Caseins,beta-Casein,beta-Caseins,epsilon-Casein,gamma-Caseins,kappa-Casein,kappa-Caseins,AD beta Casein,Caseinate, Sodium,K Casein,alpha Casein,alpha Caseins,beta Casein,beta Caseins,beta-Casein Acetylated, Dephosphorylated,beta-Casein, AD,epsilon Casein,gamma Casein,gamma Caseins,kappa Casein,kappa Caseins
D003470 Culture Media Any liquid or solid preparation made specifically for the growth, storage, or transport of microorganisms or other types of cells. The variety of media that exist allow for the culturing of specific microorganisms and cell types, such as differential media, selective media, test media, and defined media. Solid media consist of liquid media that have been solidified with an agent such as AGAR or GELATIN. Media, Culture
D005561 Formates Derivatives of formic acids. Included under this heading are a broad variety of acid forms, salts, esters, and amides that are formed with a single carbon carboxy group. Formic Acids,Acids, Formic
D005650 Fumarates Compounds based on fumaric acid. Fumarate,Fumaric Acid Ester,Fumaric Acid Esters,Fumarate Esters,Acid Ester, Fumaric,Acid Esters, Fumaric,Ester, Fumaric Acid,Esters, Fumarate,Esters, Fumaric Acid
D005734 Gangrene Death and putrefaction of tissue usually due to a loss of blood supply. Gangrenes
D006020 Glycopeptides Proteins which contain carbohydrate groups attached covalently to the polypeptide chain. The protein moiety is the predominant group with the carbohydrate making up only a small percentage of the total weight. Glycopeptide
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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