Recent research into the nature and significance of rheumatoid serum factors has been largely immunological and biochemical. The epidemiology of these components is virtually unknown. During recent years we have had the opportunity of studying several population samples, and data from these surveys have now been gathered and are presented with particular reference to the epidemiology of the ser...

Recent research into the nature and significance of rheumatoid serum factors has been largely immunological and biochemical. The epidemiology of these components is virtually unknown. During recent years we have had the opportunity of studying several population samples, and data from these surveys have now been gathered and are presented with particular reference to the epidemiology of the ser...

The anti-alpha-haemolysin test is widely used in the diagnosis of staphylococcal osteomyelitis. An additional test would be welcomed because raised antibodies to this antigen are not seen in all proven cases. This communication reports that anti-gamma-lysin was present in the serum of most of the 19 patients with proven staphylococcal osteomyelitis studied here. In two cases followed up after c...

are summarized below. It was felt, however, that the estimation of complement without the determination of the hemolysin present in the serum would give fallacious results and therefore haemolysin present in each sample of serum was estimated. Technique.?Three to four cubic centimetres of blood were drawn from the ante-cubital vein and kept in the incubator for 30 minutes, then left in ice-ches...

Escherichia coli strains cultured from 74 patients with inflammatory bowel disease at different stages of disease activity (Crohn's disease (40), ulcerative colitis (34)) and 18 healthy controls were studied in relation to haemolysin and verotoxin production and enteroadherence. Disease activity was assessed by standard clinical and laboratory tests. Haemolytic E coli were isolated from 18% of ...

The occurrence of various Vibrio species in water, sediment and shrimp samples from multiple shrimp farm environments from the east and west coast of India was studied. The relative abundance was higher in west coast farms (ca. 10(4) cfu/ml water) when compared to the east coast (ca. 10(2) cfu/ml water). Vibrio alginolyticus (3-19%), V. parahaemolyticus (2-13%), V. harveyi (1-7%) and V. vulnifi...

Virulence factors were compared in Aeromonas species isolated from clinically normal and septicaemic farmed frogs from Thailand. Haemolysin activities against frog erythrocytes were significantly different within the collection of aeromonads. Groups of high haemolytic activity (unspeciated Aeromonas, Au), moderate haemolytic activity (A. hydrophila), and low haemolytic activity (A. veronii biov...

BACKGROUND & OBJECTIVES Enterococci are the leading cause of nosocomial infections, and are thus a persisting clinical problem globally. We undertook this study to determine the virulence factors and the antibiotic resistance in Enterococcus clinical isolates. METHODS One hundred and fifty Enterococcus isolates obtained from various clinical specimens were speciated biochemically and subjecte...

The HpmA haemolysin toxin of Proteus mirabilis is encoded by the hpmBA locus and its production is upregulated co-ordinately with the synthesis and assembly of flagella during differentiation into hyperflagellated swarm cells. Primer extension identified a sigma(70) promoter upstream of hpmB that was upregulated during swarming. Northern blotting indicated that this promoter region was also req...