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Revista do Instituto de Medicina Tropical de São Paulo

On-line version ISSN 1678-9946

Rev. Inst. Med. trop. S. Paulo vol.36 no.6 São Paulo Nov./Dec. 1994

http://dx.doi.org/10.1590/S0036-46651994000600008 

EPIDEMIOLOGY

 

Prevalence and pathogenicity of Entamoeba histolytica in three different regions of Pernambuco, Northeast Brazil

 

Prevalência e patogenicidade da Entamoeba histolytica em três regiões diferentes do estado de Pernambuco, Nordeste Brasileiro

 

 

Ivanize da Silva AcaI,II; Seiki KobayashiIII; Luiz Bezerra Carvalho Jr.I,IV; Seiki TatenIII; Tsutomu TakeuchiIII

ILaboratório de Imunopatologia Keizo Asami (LIKA), Universidade Federal de Pernambuco, Recife, Brasil
IIDepartamento de Medicina Tropical, UFPE, Recife, Brasil
IIIDepartment of Parasitolgy and Tropical Medicine, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
IVDepartamento de Bioquímica, UFPE, Recife, Brasil

Correspondence to

 

 


SUMMARY

Parasitological examinations were carried out on 663 individuals of three different cities of Pernambuco State, Northeastern Brazil: Recife, Palmares and Bodocó. The population from a drought area of Pernambuco State, Bodocó, was investigated for amoebiasis and compared with Recife, metropolitan city (about 1.3 million of inhabitants) and another inland community, Palmares, located inside of the sugar-cane plantation region of the State. No evidence of invasive strains of E. histolytica were found in these inhabitants, provided that the isolated zymodemes I, III, IV, VIII, IX, X, XVII and XVIII are recognized as nonpathogenic strains of E. histolytica. Furthermore, the prevalence of intestinal helminths and other protozoan infections showed that these individuals are infected by other agents responsible for diarrhoeal diseases.

Keywords: Entamoeba histolytica; Protozoan pathogenicity; Amebiasis; Northeast Brazil.


RESUMO

Exames parasitológicos foram realizados em amostras fecais de 663 indivíduos residindo em três cidades do estado de Pernambuco, Nordeste brasileiro: Recife, Palmares e Bodocó. A população de Bodocó, situada na região do semi-árido de Pernambuco, foi investigada para amebíase e comparada com a do Recife, cidade metropolitana com cerca de 1,3 milhões de habitantes, e com outra da zona de plantação de cana-de-açucar do estado, Palmares. Não foi observada evidência da presença de cêpas invasivas de E. histolytica nesses habitantes desde que aquelas isoladas das amostras fecais, com zimodomas dos tipos I, III, IV, VIII, IX, X, XVII e XVIII, são reconhecidas como não patogênicas. Ademais, a prevalência de helmintos intestinais e de infecções por protozoários mostrou que esses indivíduos são infectados por outros agentes responsáveis por quadros diarréicos.


 

 

Full text available only in PDF format.

Texto completo disponível apenas em PDF.

 

 

ACKNOWLEDGMENTS

The authors are indebted to Mr. Lairton Rodrigues, Bodocó Mayor, and M. Francisco de Paula de Melo Medeiros for their support and technical assistance, respectively. Prof. Ieda Linhares comments are also thanked.

 

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Correspondence to:
Ivanize Aca
LIKA, Cidade Universitária
50 670-420 Recife, PE, Brasil

Recebido para publicação em 07/02/1994
Aceito para publicação em 18/08/1994
This work was financially supported by JICA and FINEP.

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