Three Clostridium botulinum type E strains were sequenced for the botulinum neurotoxin (BoNT) gene cluster, and 11 type E strains, representing a wide biodiversity, were sequenced for the bont/E gene. The total length of the BoNT/E gene cluster was 12,908 bp, and a novel gene (partial) designated orfx3, together with the complete orfx2 gene, was identified in the three type E strains for the fi...

An enzyme-linked immunosorbent assay (ELISA) for Clostridium botulinum type A and type B toxins was assessed for diagnostic accuracy in cases of infant botulism. This test was positive in all 22 cases confirmed by the conventional tests, which included the mouse lethality assay and stool culture. Stool specimens from five cases were positive by culture, but the mouse lethality bioassay was eith...

conclusions immediate diagnosis based on careful history and physical examination are essential for management of botulism. people should be notified about proper food handling and preparation of traditional homemade foods. patients and methods during an outbreak, 10 members of a family referred to the hospital because of food poisoning. all patients had a history of consumption of doogh, a tra...

Botulinum toxin is an injectable neuromodulator derived from neurotoxins produced by the bacterium Clostridium botulinum, which causes botulism. The human face made up of a complex network muscles that work together to create facial expressions and perform essential functions. Clinicians who understand anatomy functional relationships between in neck can use botulinum safely selectively weaken ...

Twelve strains of Clostridium botulinum type A and seven strains of Clostridium sporogenes were screened for plasmids by agarose gel electrophoresis of cleared lysates of cells from 5 ml of mid-log-phase culture. Nine type A strains had one or more plasmids of 4.3, 6.8, or 36 megadaltons (MDa); several strains showed a large plasmid of 61 MDa, but it was not consistently recovered. Four C. spor...

Clostridium botulinum type E antigens prepared from washed cells by either Formalin treatment or heating at 100 C were used for immunizing rabbits. Agglutination tests showed that high levels of antibody were produced by both types of preparations. Flagellar antigens were highly strain-specific, whereas the somatic antigens were sufficiently similar to produce complete cross-agglutination. One ...

Clostridium botulinum type A does not produce a 12,000 molecular weight toxin. The reported isolation of such a material by Gerwing et al. could not be confirmed.

Botulism due to type F botulinum neurotoxin (BoNT/F) is rare (<1% of cases), and only a limited number of clostridial strains producing this toxin type have been isolated. As a result, analysis of the diversity of genes encoding BoNT/F has been challenging. In this study, the entire bont/F nucleotide sequences were determined from 33 type F botulinum toxin-producing clostridial strains isolated...