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1.
Microb Pathog ; : 106840, 2024 08 15.
Artigo em Inglês | MEDLINE | ID: mdl-39153577

RESUMO

The Publisher regrets that this article is an accidental duplication of an article that has already been published, http://dx.doi.org/10.1007/s11274-024-04073-0 . The duplicate article has therefore been withdrawn. The full Elsevier Policy on Article Withdrawal can be found at: https://www.elsevier.com/about/policies/article-withdrawal

2.
World J Microbiol Biotechnol ; 40(9): 286, 2024 Jul 31.
Artigo em Inglês | MEDLINE | ID: mdl-39083107

RESUMO

Staphylococcus aureus is a gram-positive bacteria, and its virulence factors can cause many kinds of infections, such as pneumonia, sepsis, enteritis and osteomyelitis. Traditional antibiotics can not only kill bacteria, but also easily lead to bacterial resistance. Jingfang Mixture (JFM) has the effects of inducing sweating and relieving the exterior, dispelling wind and eliminating dampness, and is commonly used in clinic to prevent and treat epidemic diseases and infectious diseases. The main purpose of this study is to explore the inhibitory effect of JFM on alpha-hemolysin (Hla) of S. aureus and to alleviate the damage caused by Hla. We found that JFM could inhibit the hemolytic activity, transcription level and neutralizing activity of Hla in a dose-dependent manner at the concentrations of 125, 250 and 500 µg/mL, without affecting the growth of bacteria. In addition, JFM reduced the damage of Hla to A549 cells and the release of lactate dehydrogenase (LDH). We also observed that in the S. aureus - induced pneumonia mouse model, JFM could significantly prolong the life of mice, reduce the bacterial load in the lungs, significantly improve the pathological state of the lungs and alleviate the damage caused by inflammatory factors, and the pathogenicity of gene deletion strain DU 1090 of S. aureus to pneumonia mice was also significantly reduced. In conclusion, this study proved that JFM is a potential drug against S. aureus infection, and this study provided a preliminary study for better guidance of clinical drug use.


Assuntos
Antibacterianos , Proteínas Hemolisinas , Infecções Estafilocócicas , Staphylococcus aureus , Animais , Feminino , Humanos , Camundongos , Células A549 , Antibacterianos/farmacologia , Carga Bacteriana/efeitos dos fármacos , Toxinas Bacterianas/genética , Toxinas Bacterianas/metabolismo , Modelos Animais de Doenças , Medicamentos de Ervas Chinesas/farmacologia , Proteínas Hemolisinas/metabolismo , Hemólise/efeitos dos fármacos , Pulmão/microbiologia , Pulmão/efeitos dos fármacos , Camundongos Endogâmicos BALB C , Pneumonia Estafilocócica/tratamento farmacológico , Pneumonia Estafilocócica/microbiologia , Infecções Estafilocócicas/tratamento farmacológico , Infecções Estafilocócicas/microbiologia , Staphylococcus aureus/efeitos dos fármacos , Fatores de Virulência/genética
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