Incidencia de Escherichia coli O157:H7 en heces de rumiantes lactantes con síndrome diarreico

Ing, José Alfredo Lara-Duran; M.Sc, Mónica Silva-Vega; Bañuelos-Valenzuela, Rómulo; Delgadillo-Ruiz, Lucía; Delgadillo-Ruiz, Olivia

doi:10.21897/rmvz.1232

Cited by 5 publications

(3 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It is located in the lymphoid tissue that joins the rectum with the anus, where it colonizes in cattle. This location allows a wide spread of the pathogen, through bovine feces (Lara-Duran et al 2019). STEC bacteria are included in the Verocytotoxin-producing E. coli (VTEC), responsible for hemolytic-uremic syndrome (HUS) in humans (Etcheverria et al 2013).…”

Section: Escherichia Coli Infectionsmentioning

confidence: 99%

Causal Factors and Epidemiological Analysis of the Main Bovine Zoonoses

2023

IJAB

View full text Add to dashboard Cite

Even though cattle farming is a fundamental livestock activity in the production of food and the development of many countries, it is generating adverse effects on the environment and health. The invasion of natural ecosystems to expand breeding sites increases contact with wildlife and its pathogens, causing domestic animals to participate as potential reservoirs, which increases the risks of transmission of zoonotic diseases to humans. This condition highlights the relevance that animals have in both the origin and transmission of these diseases. The identification of causal factors, such as etiological agents, pathogenicity, environmental conditions in which they develop, transmission mechanisms, as well as risk factors for human and animal health, are decisive for generating intervention strategies. From the epidemiological point of view, imbalances in the ecological triad etiological agent-hostenvironment are associated with natural changes in the environment, physical and chemical factors and the biological conditions of the pathogens that manifest under certain conditions, initiating the epidemiological chain, so the scope of each zoonosis will depend on environmental conditions, prevalence and incidence. In the case of cattle, zoonoses can affect both productivity and public health, so adequate health management is essential, which includes primary prevention measures that guarantee the health of the animals by providing them with the necessary conditions of well-being and specific protection. Likewise, at a secondary level, early diagnosis and timely treatment of the disease, to promote the recovery of the animal and thereby reduce the risks of transmission to humans. The problem currently faced is the diversity of diseases and etiological agents that produce zoonotic diseases in cattle, highlighting bacterial, parasitic and viral zoonoses. Many of these diseases have a global distribution, such as brucellosis, anthrax, leptospirosis and tuberculosis, which are present in all five regions of the world. The current challenge, in addition to strengthening prevention and control measures, is to ensure that public, animal and environmental health function comprehensively.

show abstract

Section: Escherichia Coli Infectionsmentioning

confidence: 99%

Causal Factors and Epidemiological Analysis of the Main Bovine Zoonoses

2023

IJAB

View full text Add to dashboard Cite

show abstract

“…Se tomó una colonia para proseguir con la identificación, la cual se realizó mediante una siembra por estría en placa en medio cromogénico CHROMagar TM O:157, para E. coli O:157:H7 (Moyne et al, 2011). Luego seleccionaron 78 cepas bacterianas de heces de rumiantes lactantes con síndrome diarreico menores de tres meses, identificadas como E. coli O157:H7 en CHROMagar™ las cuales presentaron coloración rosa malva, debido a sustratos cromogénicos en el medio; permitiendo así la identificación presuntiva de la placa de aislamiento primario y la diferenciación de otros organismos (Hirvonen et al, 2012;Lara et al, 2019).…”

Section: Identificación De Bacterias En Medio Cromogénico Chromagar Tmunclassified

“…Las altas concentraciones de flavonoides hallados en frutas como el mango (García Bacallao et al, 2001), hojas de guayaba (Rodríguez et al, 2013) y flavonoides obtenidos de maqui (Aristotelia chilensis) con propiedades antioxidantes, son inductores de equinocitos (Gironés-Vilaplana et al, 2012;Durán et al, 2013). Con el uso del CHROMagar se identificó E. coli O:157 H7, diferenciándose por el color de la colonia en el medio, presenta una coloración rosa malva (Lara et al, 2019). Este medio inicialmente se utilizaba en la industria alimentaria para la liberación rápida de alimentos libres de patógenos, pero actualmente se encuentra aprobado para el análisis de muestras clínicas y ha sido empleado en diversos estudios (Bettelheim, 1998;Tang et al, 2014;Gutierrez et al, 2016;Parsons et al, 2016).…”

Section: Extracto De Hoja De Guayaba Carvacrol Timolunclassified

Caracterización química de extracto alcohólico de hoja de guayaba (Psidium guajava) y su efecto como inhibidor de movilidad para Escherichia coli O157:H7

et al. 2020

View full text Add to dashboard Cite

show abstract

Putative new combination vaccine candidates identified by reverse vaccinology and genomic approaches to control enteric pathogens

Mikaeel,

Doosti,

Sharifzadeh

2024

BMC Immunol

View full text Add to dashboard Cite

Objectives The pathogenic microorganisms that cause intestinal diseases can significantly jeopardize people's health. Currently, there are no authorized treatments or vaccinations available to combat the germs responsible for intestinal disease. Methods Using immunoinformatics, we developed a potent multi-epitope Combination (combo) vaccine versus Salmonella and enterohemorrhagic E. coli. The B and T cell epitopes were identified by performing a conservancy assessment, population coverage analysis, physicochemical attributes assessment, and secondary and tertiary structure assessment of the chosen antigenic polypeptide. The selection process for vaccine development included using several bioinformatics tools and approaches to finally choose two linear B-cell epitopes, five CTL epitopes, and two HTL epitopes. Results The vaccine had strong immunogenicity, cytokine production, immunological properties, non-toxicity, non-allergenicity, stability, and potential efficacy against infections. Disulfide bonding, codon modification, and computational cloning were also used to enhance the stability and efficacy of expression in the host E. coli. The vaccine's structure has a strong affinity for the TLR4 ligand and is very durable, as shown by molecular docking and molecular modeling. The results of the immunological simulation demonstrated that both B and T cells had a heightened response to the vaccination component. Conclusions The comprehensive in silico analysis reveals that the proposed vaccine will likely elicit a robust immune response against pathogenic bacteria that cause intestinal diseases. Therefore, it is a promising option for further experimental testing.

show abstract

Incidencia de Escherichia coli O157:H7 en heces de rumiantes lactantes con síndrome diarreico

Cited by 5 publications

References 15 publications

Causal Factors and Epidemiological Analysis of the Main Bovine Zoonoses

Causal Factors and Epidemiological Analysis of the Main Bovine Zoonoses

Caracterización química de extracto alcohólico de hoja de guayaba (Psidium guajava) y su efecto como inhibidor de movilidad para Escherichia coli O157:H7

Putative new combination vaccine candidates identified by reverse vaccinology and genomic approaches to control enteric pathogens

Contact Info

Product

Resources

About