The Open Microbiology Journal




ISSN: 1874-2858 ― Volume 13, 2019

Hemolytic Uremic Syndrome in Pediatric Intensive Care Units in São Paulo, Brazil



Renato Lopes de Souza1, João Tomás Abreu Carvalhaes2, Lucilia Sanae Nishimura3, Maria Cristina de Andrade2, Beatriz Ernestina Cabilio Guth3, *
1 Pediatric Intensive Care Unit, Department of Pediatrics, Universidade Federal de São Paulo, São Paulo, Brazil
2 Nefrology Section, Department of Pediatrics, Universidade Federal de São Paulo, São Paulo, Brazil
3 Department of Microbiology, Immunology and Parasitology, Universidade Federal de São Paulo, São Paulo, Brazil

Abstract

The hemolytic uremic syndrome (HUS) caused by Shiga toxin-producing Escherichia coli (STEC) is one of the most frequent causes of pediatric acute renal failure. The aim of this study was to report the clinic and microbiologic features associated with 13 post-diarrheal HUS cases identified in pediatric intensive care units in the city of São Paulo, Brazil, from January 2001 to August 2005. Epidemiologic, clinic, and laboratorial information, along with fecal and serum samples, were collected for identifying the genetic sequences of Stx and for studying antibodies directed against LPS O26, O111 and O157. STEC was isolated from three patients, and serotypes O26:H11, O157:H7 and O165:H- were identified. In nine patients, high levels of IgM against LPS O111 (n=2) and O157 (n=7) were detected. Dialysis was required in 76.9% of the patients; arterial hypertension was present in 61.5%, neurological complications were observed in 30.7%, and only one patient died. During a 5–year follow-up period, one patient developed chronic kidney disease. The combined use of microbiologic and serologic techniques provided evidence of STEC infection in 92.3% of the HUS cases studied, and the importance of O157 STEC as agents of HUS in São Paulo has not been previously highlighted.

Keywords: Hemolytic Uremic Syndrome, pediatric intensive care unit, diarrhea, Shiga toxin, E. coli O157, dialysis, children.


Article Information


Identifiers and Pagination:

Year: 2011
Volume: 5
First Page: 76
Last Page: 82
Publisher Id: TOMICROJ-5-76
DOI: 10.2174/1874285801105010076

Article History:

Received Date: 30/4/2011
Revision Received Date: 12/5/2011
Acceptance Date: 12/5/2011
Electronic publication date: 20/7/2011
Collection year: 2011

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© de Souza et al.; Licensee Bentham Open.

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.


* Address correspondence to this author at the Rua Botucatu, 862, 3º andar, São Paulo – S. P.- Brazil; CEP: 04023-062; Tel: 55 11 50832980; E-mail: bec.guth@unifesp.br


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