RESUMO
The present study aimed to evaluate the antimicrobial and modulating activity of the ethanol extract obtained from the leaves, stems, and roots of Cnidoscolus urens in multiresistant bacteria. The Minimum Inhibitory Concentration (MIC) values obtained for the extracts of leaves, stems, and roots were greater than 1024 µg/mL for all isolates. In the antimicrobial resistance modulation test, the extract of the leaves of C. urens showed a better modulating effect than that of the stems and roots for gentamicin, highlighting the reduction of MIC for Escherichia coli, Lactococcus garvieae and Staphylococcus sciuri. For erythromycin, a reduction of MIC was observed in L. garvieae, Staphylococcus aureus, Staphylococcus epidermidis, and Streptococcus agalactiae. The extract from the leaves of C. urens has an important modulating effect on resistance in multiresistant bacteria, especially with gentamicin and erythromycin.
Assuntos
Antibacterianos , Farmacorresistência Bacteriana Múltipla , Mastite Bovina , Testes de Sensibilidade Microbiana , Extratos Vegetais , Animais , Antibacterianos/farmacologia , Mastite Bovina/microbiologia , Bovinos , Extratos Vegetais/farmacologia , Feminino , Alismatales/microbiologia , Bactérias/efeitos dos fármacos , Bactérias/classificação , Bactérias/isolamento & purificação , Bactérias/genética , Eritromicina/farmacologia , Folhas de Planta/microbiologia , Folhas de Planta/químicaRESUMO
The aim of this study was to evaluate the occurrence of Toxoplasma gondii in backyard pigs destined for human consumption in Pernambuco state, Brazil. Blood and tissue samples (liver, heart, brain, lung and diaphragm) were collected from 224 pigs from legal slaughterhouses and tested for T. gondii infection. Antibodies to T. gondii were found in the sera of 37.9% (85/224) by using the immunofluorescence antibody test (cut-off - 1:64). Tissue samples from seropositive pigs were bioassayed in mice. Tissue samples from seropositive pigs and from mice of the bioassay were submitted to histopathology, immunohistochemistry, polymerase chain reaction (PCR) and sequencing; 14.1% of pig tissue samples and 27.7% of bioassayed mouse samples were positive for T. gondii DNA, but all pig and mouse tissues were negative in histopathology analysis and immunochemistry. By using a risk assessment questionnaire, there was significant difference (p<0.001) in seroprevalence of 21.2% (reproducer) and 3.1% (finishing pig). These data serve as indicative of the sanitary conditions and risk of T. gondii infection for backyard pigs. Preventive measures must be implemented by health services to avoid toxoplasmosis human cases due to ingestion of pig meat.