Estudo de cepas de Staphylococcus aureus isoladas de amostras nasais e linguais de portadores voluntários adultos saudáveis
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Data
2007-03-22
Autores
Colli, Vilma Clemi [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
Neste estudo investigou-se a colonização por S. aureus e a associação entre cepas isoladas dos sítios nasal e lingual de voluntários adultos saudáveis. Adicionalmente verificou-se a presença de cepas MRSA, BORSA, com resistência constitutiva ou induzida à clindamicina e os portadores que persistiram após cinco meses. Foram obtidos swabs dos sítios nasal e lingual de 100 indivíduos adultos sem histórico de internação hospitalar, sem contato com serviços de saúde, doença de base, diabete e sem uso de antibióticos. Dos pacientes, 9,0% tiveram S. aureus isolados apenas do sítio nasal, 4,0% apenas no sítio lingual e 4,0% nos dois sítios. Uma cepa nasal foi considerada fenotipicamente MRSA com características de CA MRSA e uma foi considerada BORSA. Quatro cepas (19,0%) demonstraram resistência induzida à clindamicina. Uma delas de origem nasal e outra de origem lingual de diferentes indivíduos. As outras duas eram de origem nasal e lingual de um mesmo indivíduo. Entre os portadores 10,0% e 5,0% foram carreadores persistentes nasais e linguais respectivamente. O portador de MRSA nasal foi considerado persistente. A associação entre cepas nasal e lingual de um mesmo indivíduo foi excluída para um dos pacientes e confirmada por PFGE para os demais. Dentre os portadores persistentes, 2 foram persistentes apenas no sítio lingual. Os resultados de PFGE confirmaram que um deles era portador persistente do mesmo clone apenas no sítio lingual. Estes resultados sugerem que uma atenção específica ao sítio lingual nas profilaxias cirúrgicas com mupirocina poderia melhorar o resultado de seu emprego. Adicionalmente a associação clonal entre cepas nasal e lingual sugere que o sítio lingual seja um sítio provável para recolonizações pelos mesmos clones após profilaxia com mupirocina...
In this study we attempted to investigate S. aureus colonization in healthy adult volunteer and tried to establish the correlation between strains isolated from the nasal and lingual sites. Additionally we verified the presence of MRSA, BORSA, clindamycin constitutive and inducible resistant and investigate the persistent carriers after 5 months. The swabs were obtained from nasal and lingual sites from 100 adult patients without a history of hospitalization, health care contact, antimicrobial use, basis disease and diabetes. Of the patients, 9.0% had only nasal colonization, 4,0% only lingual colonization and 4,0% had S. aureus colonization in both (nasal and lingual) sites. From the nasal isolations, one was considered a phenotypic methicillinresistant strain with CA MRSA s characteristics and one a borderline oxacillin resistant. No one constitutive clindamycin constitutive resistant strain was isolated. Four isolations (19,0%) demonstrated inducible clindamycin resistance. One of them was from the nasal and another from the lingual site from different patients. The other two, were isolated from the same patient in both sites. From the nasal and lingual carriers 10,0% and 5,0% respectively were persistent carriers. The nasal methicillinresistant carrier was considered persistent. The clonally association between nasal and lingual strains in the same patient was excluded for one patient and confirmed by PFGE for the others. From the persistent 2 were only lingual persistent carriers. The PFGE confirmed that one of them was colonized with the same clone. It suggests that special attention should also be directed to this site for the control of nosocomial infection. It should be better the results of prophylaxis. In addition the association between the nasal and lingual strains suggested that lingual site can be a possible site for same clone recolonization after mupirocin prophylaxis ...(Complete abstract click electronic access below)
In this study we attempted to investigate S. aureus colonization in healthy adult volunteer and tried to establish the correlation between strains isolated from the nasal and lingual sites. Additionally we verified the presence of MRSA, BORSA, clindamycin constitutive and inducible resistant and investigate the persistent carriers after 5 months. The swabs were obtained from nasal and lingual sites from 100 adult patients without a history of hospitalization, health care contact, antimicrobial use, basis disease and diabetes. Of the patients, 9.0% had only nasal colonization, 4,0% only lingual colonization and 4,0% had S. aureus colonization in both (nasal and lingual) sites. From the nasal isolations, one was considered a phenotypic methicillinresistant strain with CA MRSA s characteristics and one a borderline oxacillin resistant. No one constitutive clindamycin constitutive resistant strain was isolated. Four isolations (19,0%) demonstrated inducible clindamycin resistance. One of them was from the nasal and another from the lingual site from different patients. The other two, were isolated from the same patient in both sites. From the nasal and lingual carriers 10,0% and 5,0% respectively were persistent carriers. The nasal methicillinresistant carrier was considered persistent. The clonally association between nasal and lingual strains in the same patient was excluded for one patient and confirmed by PFGE for the others. From the persistent 2 were only lingual persistent carriers. The PFGE confirmed that one of them was colonized with the same clone. It suggests that special attention should also be directed to this site for the control of nosocomial infection. It should be better the results of prophylaxis. In addition the association between the nasal and lingual strains suggested that lingual site can be a possible site for same clone recolonization after mupirocin prophylaxis ...(Complete abstract click electronic access below)
Descrição
Palavras-chave
Staphyloccocus aureus, Maticilina, Clindamicina, Borsa
Como citar
COLLI, Vilma Clemi. Estudo de cepas de Staphylococcus aureus isoladas de amostras nasais e linguais de portadores voluntários adultos saudáveis. 2007. 171 f. Dissertação (mestrado) - Universidade Estadual Paulista, Faculdade de Ciências Farmacêuticas, 2007.