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      Clinical and diagnostic aspects of intestinal microsporidiosis in HIV-infected patients with chronic diarrhea in Rio de Janeiro, Brazil Translated title: Aspectos clínicos e diagnósticos da microsporidiose intestinal em pacientes com infecção pelo HIV e diarréia crônica, no Rio de Janeiro, Brasil

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          Abstract

          The objectives of this study were to determine both the prevalence of microsporidial intestinal infection and the clinical outcome of the disease in a cohort of 40 HIV-infected patients presenting with chronic diarrhea in Rio de Janeiro, Brazil. Each patient, after clinical evaluation, had stools and intestinal fragments examined for viral, bacterial and parasitic pathogens. Microsporidia were found in 11 patients (27.5%) either in stools or in duodenal or ileal biopsies. Microsporidial spores were found more frequently in stools than in biopsy fragments. Samples examined using transmission electron microscopy (n=3) or polymerase chain reaction (n=6) confirmed Enterocytozoon bieneusi as the causative agent. Microsporidia were the only potential enteric pathogens found in 5 of the 11 patients. Other pathogens were also detected in the intestinal tract of 21 patients, but diarrhea remained unexplained in 8. We concluded that microsporidial infection is frequently found in HIV infected persons in Rio de Janeiro, and it seems to be a marker of advanced stage of AIDS.

          Translated abstract

          Os objetivos deste estudo foram determinar a prevalência e o prognóstico clínico da infecção por microsporídios em uma coorte de 40 pacientes com infecção pelo HIV e diarréia crônica na cidade do Rio de Janeiro, Brasil. Cada paciente teve suas fezes e fragmentos de intestino examinados para a pesquisa de CMV, bactérias e parasitos. A prevalência de microsporidiose foi de 27,5% (n=11). Esporos de microsporídios foram encontrados com maior frequência no exame direto das fezes do que em biópsias de intestino delgado. A microscopia eletrônica de transmissão e a reação de polimerase em cadeia (PCR) identificaram Enterocytozoon bieneusi, respectivamente, em 3 e 6 amostras examinadas, confirmando a espécie como único agente causal. Nenhum outro microrganismo patogênico, além dos microsporídios, foi detectada em 5 dos pacientes com diarréia. Outros parasitos foram encontrados no trato digestivo de 21 pacientes, enquanto que em 8 a etiologia da diarréia não foi definida. Concluímos que a infecção por microsporídios pode ser freqüentemente encontrada em indivíduos infectados pelo HIV no Rio de Janeiro.

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          1993 revised classification system for HIV infection and expanded surveillance case definition for AIDS among adolescents and adults.

          (1992)
          CDC has revised the classification system for HIV infection to emphasize the clinical importance of the CD4+ T-lymphocyte count in the categorization of HIV-related clinical conditions. This classification system replaces the system published by CDC in 1986 (1) and is primarily intended for use in public health practice. Consistent with the 1993 revised classification system, CDC has also expanded the AIDS surveillance case definition to include all HIV-infected persons who have < 200 CD4+ T-lymphocytes/microL, or a CD4+ T-lymphocyte percentage of total lymphocytes of < 14. This expansion includes the addition of three clinical conditions--pulmonary tuberculosis, recurrent pneumonia, and invasive cervical cancer--and retains the 23 clinical conditions in the AIDS surveillance case definition published in 1987 (2); it is to be used by all states for AIDS case reporting effective January 1, 1993.
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            1993 revised classification system for HIV infection and expanded surveillance case definition for AIDS among adolescents and adults

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              Plan Nnacional de Investigación Científica y Desarrollo Tecnológico 1988-1991

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                Author and article information

                Contributors
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                Journal
                rimtsp
                Revista do Instituto de Medicina Tropical de São Paulo
                Rev. Inst. Med. trop. S. Paulo
                Instituto de Medicina Tropical (São Paulo )
                1678-9946
                December 2000
                : 42
                : 6
                : 299-304
                Affiliations
                [1 ] Universidade do Estado do Rio de Janeiro Brazil
                [2 ] Universidade do Estado do Rio de Janeiro Brazil
                [3 ] Universidade Federal do Rio de Janeiro Brazil
                [4 ] Universidade Federal do Rio de Janeiro Brazil
                [5 ] Hospital Pedro II Brasil
                [6 ] Fiocruz Brasil
                Article
                S0036-46652000000600001
                10.1590/S0036-46652000000600001
                d091130e-1906-4d74-a548-cf935ba3e03d

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0036-4665&lng=en
                Categories
                TROPICAL MEDICINE

                Infectious disease & Microbiology
                Microsporidia,AIDS,Chronic diarrhea,Enterocytozoon bieneusi
                Infectious disease & Microbiology
                Microsporidia, AIDS, Chronic diarrhea, Enterocytozoon bieneusi

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