Parasitosis and irritable bowel syndrome. Correspondencia a:. Entre los factores ambientales se incluye la presencia de alguna parasitosis intestinal. Irritable bowel syndrome IBS is a functional disorder of the gastrointestinal tract characterised by multi-factorial aetiology.

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Physiopathogenic mechanisms and laboratorial diagnosis of Entamoeba histolytica infection. Amebiasis is the second cause of death among parasitary diseases in the world. Its etiologic agent is the protozoan Entamoeba histolytica , which destroys the host tissue by means of the secretion of proteinases, kills the target-cells by contact and phagocytizes erythrocytes.

Accordingly, the trophozoites invade the intestinal mucosa, what causes amoebaean colitis. In some cases, they pass through the mucosa and reach the liver through the portal system, where they cause necrosis, which is composed of a few trophozoites surrounded by dead hepatocytes and liquefied cellular debris. This invasion is directly related to the synthesis capacity and secretion of molecules responsible for the virulence of trophozoites such as amoebapores, lectins and cysteine proteinases.

The diagnosis of infection caused by this pathogen is routinely performed through optical microscopy of fresh samples or fixed specimens. However this methodology presents limitations insofar as it is unable to distinguish the specimens belonging to the complex E. The research on coproantigens and the polymerase chain reaction PCR method have been used to differentiate these protozoa in fecal samples.

However further studies are required for a better understanding of the host-parasite relationship, the proteomics and genomics of the protozoa, the development of vaccines and the real prevalence of this infection in Brazil and worldwide. Key words: Entamoeba histolytica , Amebiasis, Physiopathogeny. Sharma et al. Segundo Talvani et al. Ademais, pacientes infectados com E. Na pesquisa da E. Haque et al. Abd-Alla et al. A cada ciclo a quantidade de DNA-alvo duplica. Verweij et al.

Mirelman et al. Apesar desses fatos, Haque et al. Pinheiro et al. Oliveira-Costa et al. De modo semelhante, Santos 96 , ao examinar amostras de No entanto, depois de implantada e padronizada, possui baixo custo. O projeto genoma da E. Trop Med Int Health , v. Fatal amoebic colitis in pregnancy and puerperium: a new clinico-pathological entity. J Trop Med Hyg , v. The diagnostic implications of the separation of Entamoeba histolytica and Entamoeba dispar.

J Biosci , v. Invasive amebiasis. Amebic liver abscess and its complications. Medicine Baltimore , v. Amebic dysentery and its complications.

Entamoeba histolytica as a commensal intestinal parasite in homosexual men. Prostanoids inhibit intestinal NaCl absorption in experimental porcine cryptosporidiosis. Gastroenterology , v. Fulminant amebic colitis. World J Surg , v. BANK, S. The clinical spectrum of amoebic colitis. Counterimmunoelectrophoresis in the immunodiagnosis of amoebiasis.

J Postgrad Med , v. Necrosis versus apoptosis as the mechanism of target cell death induced by Entamoeba histolytica. Infect Human , v. Involvement of 5-hydroxytryptamine, prostaglandin E2 and cyclic adenosine monophosphate in cholera toxin-induced fluid secretion in the small intestine of the rat in vivo. Cholera toxin induces prostaglandin synthesis via posttranscriptional activation of cyclooxygenase-2 in the rat jejunum.

J Pharmacol Exp Ther , v. Absence of lipophosphoglycan-like glycoconjugates in Entamoeba histolytica. Parasitology , v. Seroepidemiology of Entamoeba histolytica in a slum in northeastern Brazil. Am J Trop Med Hyg , v. Entamoeba histolytica and Entamoeba dispar infections as detected by monoclonal antibody in an urban slum in Fortaleza, Northeast Brazil. Rev Soc Bras Med Trop , v. Seroepidemiology of amebiasis in Mexico. Tyrosine phosphorylation of focal adhesion kinase at sites in the catalytic domain regulates kinase activity: a role for Src kinases.

Mol Cell Biol , v. The pathogenicity of Entamoeba histolytica is related to the capacity of evading innate immunity. Parasite Immunol , v. Radiology of invasive amebiasis of the colon. Am J Roentgenol , v.

Rat and human colonic mucins bind to and inhibit the adherence lectin of Entamoeba histolytica. J Clin Invest , v. Rapid latex agglutination test for extraluminal amoebiasis. J Clin Pathol , v. In vitro and in vivo studies of macrophage functions in amebiasis.

Infect Immun , v. Necrotizing amebic colitis: a frequently fatal complication. A nested, multiplex, PCR assay for the simultaneous detection and differentiation of Entamoeba histolytica and Entamoeba dispar in faeces.

Ann Trop Med Parasitol , v. Parasitol Int , v. Rev Soc Bra Med Trop , v. Diagnostic medical parasitology. Washington, D. A longitudinal study of asymptomatic carriers of pathogenic zymodemes of Entamoeba histolytica. Value of microscopy in the diagnosis of dysentery associated with invasive Entamoeba histolytica.

Diagnosis of amebic dysentery by detection of Entamoeba histolytica fecal antigen by an invasive strain-specific, monoclonal antibody-based enzyme-linked immunosorbent assay. J Clin Microbiol , v. Interaction between Entamoeba histolytica and human polymorphonuclear neutrophils.

J Infec Dis , v. Rapid diagnosis of Entamoeba infection using Entamoeba and Entamoeba histolytica stool antigen detection kits. Comparison of PCR, isoenzyme analysis and antigen detection for diagnosis of Entamoeba histolytica infection. Prevalence and immune response to Entamoeba histolytica infection in preschool children in Bangladesh.

Am J Trop Hyg , v. Diagnosis of amebic liver abscess and intestinal infection with the TechLab Entamoeba histolytica II antigen detection and antibody tests.

Innate and acquired resistance to amoebiasis in Bangladeshi children. J Infect Dis , v. HUNG, C. Invasive amoebiasis: an emerging parasitic disease in patients infected with HIV in an area endemic for amoebic infection. AIDS , v. Serological differentiation between past and present infection in hepatic amoebiasis.

Seroepidemiological study of antibody responses to the zymodemes of Entamoeba histolytica. Lancet , v. Amebiasis presenting as rectal bleeding without diarrhea in childhood. J Pediatr Gastroenterol Nutr , v. An epidemiological study of Entamoeba histolytica and E. Arch Med Res , v. Amebic liver abscess.


Amebiasis (disenterĂ­a amebiana)

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Disenteria Amebiana Aguda


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