Dimeric γ-lactone derivatives from the soil-derived fungus NSTRU-PN1.4.

Investigation of the soil-derived fungus NSTRU-PN1.4 resulted in the isolation of five dimeric γ-lactones including two new botryosphaerilactones D and E ( and ) and three known structurally related analogoues () along with seven known compounds. Their structures were elucidated by extensive spectroscopic analysis.

Evidence of class 1 integron transfer between Escherichia coli and Salmonella spp. on livestock farms.

A study was conducted to determine if homologous integrons occurred in Escherichia coli and Salmonella spp. within livestock production sites in the United States and Thailand suggesting transfer of genetic resistance elements between those organisms. Fecal samples were collected via rectal swabs from live swine in the United States and Thailand, and cloacal swabs from live chickens in Thailand, and killed chickens at a U.

Prevalence of class 1 integrons in commensal Escherichia coli from pigs and pig farmers in Thailand.

Escherichia coli isolates (n = 617) from fecal samples of healthy and diarrheal pigs, pig farmers, and nonfarmers were analyzed for class 1 integrons. Three hundred ninety-two isolates (63.5%) were positive for class 1 integrons, based on the presence of intI1, with seventy-one of those isolates (11.

Clonal relatedness of Salmonella isolates associated with invasive infections in captive and wild-caught rattlesnakes.

This study examines the serotype distribution and clonal relatedness among Salmonella isolates obtained from healthy and diseased snakes. Isolates from extraintestinal body sites were obtained through routine diagnostic lab submissions from snakes in two facilities that had experienced a high prevalence of osteomyelitis in Crotalus species. Gastrointestinal isolates were predominantly from fecal samples collected from healthy snakes of both crotalid and non-crotalid species in one facility.