Publications by authors named "Vania M Carvalho"

Background And Aim: is one of the main pathogens responsible for veterinary and human infections, and it is associated with significant economic losses in the livestock, as it causes severe diseases to humans, particularly in children. For that reason, there is a need for introducing new drugs to treat diseases. The Brazilian species richness is a source of potential new antibacterial natural products.

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We surveyed healthy captive cockatiels (Nymphicus hollandicus) for Escherichia coli and Salmonella spp. Cloacal swabs were collected from 94 cockatiels kept in commercial breeders, private residencies and pet shops in the cities of São Paulo/SP and Niterói/RJ (Brazil). Three strains of E.

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Objective: This is a random blinded placebo controlled murine experimental model to study the effects of Cantharis 6 CH, a homeopathic medicine, on E coli-induced cystitis.

Methods: 24 adult susceptible female BALB/c mice were inoculated with E coli - UPEC O4:K-:H5 by a transurethral catheter. Cantharis 6cH or vehicle (placebo) was offered to mice by free access into the drinking water (1:100), during 24 h after infection.

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Seabirds may be responsible for the spread of pathogenic/resistant organisms over great distances, playing a relevant role within the context of the One World, One Health concept. Diarrheagenic E. coli strains, known as STEC (shiga toxin-producing E.

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Article Synopsis
  • * Rectal swabs from 36 wild mammals were collected for bacterial isolation; results indicated higher virulence and antimicrobial resistance in E. coli strains from the more human-influenced Cantareira State Park compared to the more natural Santa Isabel do Rio Negro Region.
  • * Two Salmonella enterica strains linked to reptiles were found only in the Amazon region and were susceptible to all tested antimicrobials, suggesting a need for further research on the environmental health implications of these pathogens in wildlife.
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Klebsiella pneumoniae is an important emerging pathogen in humans, particularly the invasive hypermucoviscosity (HMV) phenotype. In addition, the organism is an important public health concern because of nosocomial infections and antimicrobial resistance. Nonhuman primates in captivity are susceptible to Klebsiella, particularly when a stress factor is involved.

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Black lion tamarins (Leontopithecus chrysopygus) are endangered callithrichids. Their conservation may require future translocations or reintroductions; however these approaches involve risks of pathogen introduction in the environment and stress-related opportunistic infections in these animals. In order to screen for opportunistic and potential pathogenic bacterial and fungal microbiota, ten free-ranging and ten captive Black lion tamarins were studied and the results compared.

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Diseases caused by extraintestinal pathogenic Escherichia coli (ExPEC) in wild felids are rarely reported. Although urinary tract infections are infrequently reported in domestic cats, such infections when present are commonly caused by ExPEC. The present work characterized ExPEC strains isolated from 2 adult felines, a snow leopard (Panthera uncia) and a black leopard (Panthera pardus melas), that died from secondary bacteremia associated with urinary tract infections.

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Article Synopsis
  • The study examined captive wild felids in Brazil, testing 159 neotropic and 51 exotic cats for infectious pathogens using blood tests.
  • Frequent antibodies were found for Feline parvovirus, Feline coronavirus, Feline calicivirus, and Bartonella spp., while Felid herpesvirus 1 and hemotropic mycoplasmas were less common.
  • Serologic evidence for more serious infections like Feline leukemia virus was rare, highlighting the need for health assessments before relocating these animals.
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Enteropathogenic Escherichia coli (EPEC) has been associated with infantile diarrhea and mortality in humans in developing countries. While diarrhea is also a major problem among primates kept in captivity, the role of E. coli is unclear.

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