Hemolytic Streptococcal Cell Walls
نویسنده
چکیده
INTRODUCTION.................................................................................. 369 STREPTOCOCCAL STRUCTURE................................................................. 369 ISOLATION AND IMMUNOCHEMICAL CHARACTERISTICS OF GROUP CARBOHYDRATES ..... ............ 370 Alethods for Extraction of the Carbohydrates from Cell Walls.................................... 371 Group-Specific Carbohydrates Extracted with Hot Formamide.................................... 372 Inhibition of Antigen-Antibody Precipitation by Specific Constituent Sugars..................... 373 Effect of Induced Enzymes on the Carbohydrate................................................. 374 Variation in the Specific Carbohydrates of Groups A and C Streptococci ......................... 377 Group G Streptococci ..... ............................................. ....................... 378 SUMMARY...................................................................................... 379 LITERATURE CITED............................ 379
منابع مشابه
Symposium on Relationship of Structure of Microorganisms to Their Immunological Properties. Iv. Antigenic and Biochemical Composition of Hemolytic Streptococcal Cell Walls.
INTRODUCTION................................................................................. 341 REACTIONS IN THE SKIN OF NORMAL ANIMALS.................................................. 341 DELAYED HYPERSENSITIVITY .................................................. 342 ALLERGIC ENCEPHALOMYELITIS ................................................. 348 IMMUNITY TO INFECTION WITH VIRULENT TUBERCLE...
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The lysis of cell walls of hemolytic streptococci by a phage-associated lysin has been described. A method is presented for preparing the lysin from Group C streptococcal phage lysates. Following lysis almost all of the cell wall carbohydrate is recovered in solution. This material has the serological reactivity, physical-chemical properties, and values for nitrogen, rhamnose, and glucosamine s...
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AFTER DISINTEGRATION BY SONIC VIBRATIONS THE CONTENTS OF THE HEMOLYTIC STREPTOCOCCUS CAN BE SEPARATED BY DIFFERENTIAL CENTRIFUGATION INTO THREE FRACTIONS: an insoluble residue, cytoplasmic particles, and a solution of proteins of smaller unit size. The residue (R) presumably comprises the cell walls of the bacteria and contains the type-specific M protein. The cytoplasmic particles (CP) contain...
متن کاملFilamentous capsulated streptococci from the human respiratory tract. I. Antigenic attributes of provisional capsular type 83 and its relationship to streptococci of so-called group M.
Two immunologically reactive polysaccharides have been isolated from the cell walls and from culture filtrates of a filamentous alpha-hemolytic streptococcus provisionally designated capsular type 83. Both polysaccharides were purified by diethylaminoethyl-cellulose chromatography. Analysis indicates that the capsular polysaccharide consists of galactose and phosphorus, whereas the cell wall po...
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Investigations of the cellular components concerned with the antigenicity and virulence of group A streptococci indicate that the typespecific M protein is the antigen most consistently associated with virulence (Lancefield, 1940). The ability of these organisms to resist phagocytosis is, perhaps, the most important factor in conferring virulence. Wiley and Wilson (1956) have made an extensive ...
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