K antigens

10/01/1997 - "From these results it can be speculated that alpha-hemolysin from Escherichia coli may play a leading role, and O- or K-antigen may play a supporting role in the pathogenesis of pyelonephritis."
01/01/1983 - "Therefore, optimal prophylactic immunization against acute pyelonephritis could be achieved by giving immunogenic K antigen, that is conjugated to a carrier, which might induce antibody formation in most individuals."
08/01/1976 - "Experimental hematogenous pyelonephritis was produced with Escherichia coli 06 K13 H1 and the serum and local (intrarenal) antibody response to O and K antigens was determined with the enzyme-linked immunosorbent assay. "
08/01/1976 - "The local immune response to Escherichia coli O and K antigen in experimental pyelonephritis."
08/01/1976 - "Although the K antigen is an important determinant of invasiveness of the upper urinary tract, it fails to elicit a cellular immune response or attach to lymphocytes from the infected kidney in experimental pyelonephritis."

05/01/1983 - "K antigens of Escherichia coli and virulence in urinary-tract infection: studies in a mouse model."
01/01/1973 - "Studies on antibody response and tolerance to E, coli K antigens in immunized rabbits and in children with urinary tract infection."
07/01/1993 - "The relative virulence (defined as odds ratio) associated with different O and K antigens, adhesins and hemolysin production of Escherichia coli strains was assessed by separate and multivariate logistic regression analyses comparing 383 strains isolated from urine of adults with a urinary tract infection with 287 fecal strains from healthy adults; special interest was paid to evaluating the role of type 1C fimbriation. "
06/01/1991 - "Serum resistance can be expected in strains from urinary tract infections, with a quite varying frequency depending on the O serotype, certain K antigens and other factors."
12/01/1990 - "K-antigen identification, hemolysin production, and hemagglutination types of Escherichia coli O6 strains isolated from patients with urinary tract infections."

10/01/1975 - "Some evidence for the nature of the factors responsible for kidney infection came from a study of various mutants derived from E.coli LP729 (serotype 09), which produces negligible amounts of K antigen and is rapidly killed by serum after a delay of one hour. "
06/01/2012 - "Sinorhizobium fredii HH103 rkp-3 genes are required for K-antigen polysaccharide biosynthesis, affect lipopolysaccharide structure and are essential for infection of legumes forming determinate nodules."
01/01/2007 - "coli strains expressing the K5 antigen thereby contributing to virus binding and infection. "
09/29/2006 - "Structural characterization of a K-antigen capsular polysaccharide essential for normal symbiotic infection in Rhizobium sp. NGR234: deletion of the rkpMNO locus prevents synthesis of 5,7-diacetamido-3,5,7,9-tetradeoxy-non-2-ulosonic acid."
07/01/1997 - "We obtained mutants devoid of the O1-antigen, the capsular polysaccharide (K antigen) or both from Klebsiella pneumoniae clinical isolates (urinary infection). "

04/01/1986 - "Further, additional adsorption studies using granulocytes from a boy with X-linked chronic granulomatous disease (CGD) indicated that these granulocytes also do not possess the Kx antigen. "
03/01/1977 - "The leukocytes of boys with X-linked chronic granulomatous disease lack KX antigen and have defective bactericidal function. "
03/01/1977 - "The Kell blood group, Kx antigen, and chronic granulomatous disease."
01/01/2010 - "Successful hematopoietic stem-cell transplantation in a patient with chronic granulomatous disease and McLeod phenotype sensitized to Kx and K antigens."
01/01/1978 - "Chronic granulomatous disease, Kx antigen and the Kell blood groups."

04/01/1954 - "Studies on the K antigen of H pertussis; its existence and a method of detection."
08/01/1995 - "pertussis had K antigen consisting of 1, 3, and 6. The determination of minimal inhibitory concentrations (MIC) of antibiotics to B. "