This study aimed to detect the virulent serovars (including ESBLs producing) isolated from broiler chickens and humans. Three hundred broilers and sixty human fecal samples were bacteriologically examined. Thirty (10%) and fourteen (23.4%) isolates were recovered from broiler and human samples, respectively. The most predominant serovar was and . All isolates were confirmed by conventional PCR-based A and A genes. Multidrug resistant (MDR) isolates were screened for the detection of A and D biofilm-associated genes, which were found in all isolated serovars except one and 2 of chicken isolates that were devoid of the A gene. Moreover, MDR isolates were screened for detection of seven resistance genes including ESBLs and other classes of resistance genes. Chicken isolates harbored , 1, and S genes as 100, 27.8, 11.1 and 11.1%, respectively, while all human isolates harbored , 1 and 3 genes. The genetic correlations between virulent serovars (including antimicrobial resistance) avian and human origins were compared. In conclusion, the high prevalence of virulent ESBL producing serovars in broilers and humans with genetic correlations between them might be zoonotic and public health hazards.
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http://dx.doi.org/10.3390/pathogens11101196 | DOI Listing |
Infect Immun
December 2024
Laboratory of Intracellular Bacterial Pathogens, National Centre for Biotechnology (CNB-CSIC), Madrid, Spain.
Type III protein secretion systems (T3SSs) function as multiprotein devices that span the envelope of Gram-negative bacteria using the peptidoglycan (PG) layer as scaffold. This spatial arrangement explains why modifications in PG structure can alter T3SS activity. In incorporation of non-canonical D-amino acids in the PG was shown to decrease the activity of the T3SS encoded by the pathogenicity island-1 (SPI-1) without affecting other T3SS, like the flagellum apparatus.
View Article and Find Full Text PDFIndian J Med Res
November 2024
Department of Health Research, Indian Council of Medical Research, New Delhi, India.
Background & objectives Dengue virus causes frequent outbreaks and epidemics with high morbidity and mortality. It is important to monitor the trends of the dengue virus and its serotypes. We carried out the present work to study the prevalence of the dengue virus and its serotypes in clinically suspected cases of dengue in Rajasthan.
View Article and Find Full Text PDFFront Cell Infect Microbiol
December 2024
Laboratório de Desenvolvimento de Vacinas, Instituto Butantan, São Paulo, Brazil.
Pathogenic are spirochetes that cause leptospirosis, a worldwide zoonotic disease. Leptospirosis affects humans and animals, with approximately 1 million human infections and 60,000 deaths per year. The diversity of leptospiral strains and serovars allied to the fact that pathogenesis is not yet fully understood, make the development of an effective vaccine against leptospirosis a challenge.
View Article and Find Full Text PDFFASEB J
December 2024
State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine Jilin University, Center of Infectious Diseases and Pathogen Biology, Department of Infectious Diseases, First Hospital of Jilin University, Changchun, China.
Salmonella enterica serovar Typhimurium (S. Typhimurium) poses a serious threat to human and animal health, and there is an urgent need to develop new therapeutic agents. In our in vivo study, ginsenoside Ro (Ro) reduced the mortality rate of S.
View Article and Find Full Text PDFMicrob Pathog
December 2024
Department of Laboratory Medicine, Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu 212001, China. Electronic address:
The autophagy pathway plays a crucial role in resistance to bacterial infection in the host. Salmonella enterica serovar Typhi (S. Typhi), a human restricted pathogen, causes a systemic infection known as typhoid fever.
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