Ocorrência de Cryptosporidium sp em amostras fecais de crianças, menores de 10 anos de idade, com indicação clínica de Rotavírus

Silva, Sidnei da; Silva, Siudomar Pereira da; Gouveia, Yára de Souza; Silva, Nívia de Oliveira da; Melo, Márcia Elizabeth Reis Monteiro de; Moura, Hércules; Neves, Renata Heisler; Bello, Alexandre Ribeiro; Machado-Silva, José Roberto

doi:10.1590/s0037-86822003000300018

Cited by 4 publications

(4 citation statements)

References 8 publications

(6 reference statements)

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“…A few epidemiological studies developed in Brazil have used molecular methods for the detection of Cryptosporidium spp., as well as genotyping studies of their species and sub-types 76 , 77 (Figure 1). A study in Rio de Janeiro, Rio de Janeiro State, analyzed 26 samples of feces contaminated with Cryptosporidium spp.…”

Section: Introductionmentioning

confidence: 99%

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New insights into the detection and molecular characterization of Cryptosporidium with emphasis in Brazilian studies: a review

Cunha

Peralta

2019

Rev. Inst. Med. trop. S. Paulo

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Cryptosporidium spp. is a pathogenic protozoan present in the gastrointestinal tract of several hosts. This protozoan was originally classified as within the Coccidia Class and has recently been reclassified to gregarine based on studies that observed the evolutionary phases from the process of excision and sequencing of the 18S rRNA gene. Molecular biology techniques have become diagnostic tools and have also been used to understand the epidemiology of Cryptosporidium spp., since several species of this genus are very similar morphologically and morphometrically. Molecular techniques have been used in the identification of parasites, at the species and subtypes levels and to study disease transmission. The laboratory diagnosis of human cryptosporidiosis can be made by parasite detection methods, such as optical microscopy, antigens or genetic material detection, as well as serum antibodies raised to Cryptosporidium spp. Molecular methods were developed and allowed, not only an extensive revision of the taxonomy, but also an improvement in the laboratory diagnosis. In Brazil, there are few reports of Cryptosporidium spp. outbreaks in humans and all of them took place in nurseries. A few epidemiological studies developed in Brazil have used molecular methods for the detection of Cryptosporidium spp., as well as genotyping studies of their species and subtypes. The use of real-time PCR, together with microscopy and immunochromatography techniques, would result in a more precise diagnosis of cryptosporidiosis. The analysis of genotypes, subtypes and clonality of Cryptosporidium could be useful to understand and define the prognosis and severity of infections.

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Section: Introductionmentioning

confidence: 99%

“…from children and immunocompromised patients. The PCR-RFLP technique revealed the presence of C. hominis and C. parvum , with C. hominis being the most frequent 76 . Gonçalves et al .…”

Section: Introductionmentioning

confidence: 99%

New insights into the detection and molecular characterization of Cryptosporidium with emphasis in Brazilian studies: a review

Cunha

Peralta

2019

Rev. Inst. Med. trop. S. Paulo

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“…Estudos realizados em diferentes estados no Brasil têm demonstrado uma prevalência de Cryptosporidium spp em crianças (0 a 12 anos de idade) de 4,2%, 3,3% e 1,8% em Uberlândia (MG) 11 , Rio de Janeiro (RJ) 30 e Ribeirão Preto (SP) 22 , respectivamente.…”

Section: Discussionunclassified

“…Ainda que não tenha sido possível estabelecer o período de duração do episódio diarréico no presente estudo, é coerente supor que, nesta fase haja intensa eliminação de oocistos nas fezes 30 , fato este comprovado pela baixa freqüência de Cryptosporidium spp detectados nas amostras de fezes do tipo consistente (Tabela 1).…”

Section: Discussionunclassified

Presença de Cryptosporidium spp em crianças com diarréia aguda em uma creche pública de Recife, Estado de Pernambuco

Nascimento

Cavalcanti

Irmão

et al. 2009

Rev. Soc. Bras. Med. Trop.

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Indivíduos imunossuprimidos estão sujeitos a uma série de complicações infecciosas causadas por agentes oportunistas, e em decorrência deste fato, poder-se-á observar o aparecimento de algumas doenças denominadas emergentes 20 ABSTRACTThe objective of the present study was to analyze the frequency of oocysts of Cryptosporidium spp in fecal samples from children aged one to fourteen years at a public daycare center located in a needy community in the city of Recife, Pernambuco. The investigation was carried out between June 28, 2006, and April 3, 2007, and involved 182 children. Among the samples analyzed, 59 (32.4%) were positive regarding the presence of oocysts of Cryptosporidium spp, and the age group most affected was between three and five years (54.2%). The high frequency of samples positive for Cryptosporidium spp obtained in this study confirms that daycare centers are an environment that favors such occurrences, because of the direct contact between children or between children and staff. The most important infection route for Cryptosporidium spp is person-to-person transmission, which is well illustrated in daycare centers. Immaturity, deficiencies of the immune system and inadequate hygiene habits are factors that also contribute towards this type of infection.

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cryptosporidiosis in livestock and poultry

2022

CABI Compendium

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Ocorrência de Cryptosporidium sp em amostras fecais de crianças, menores de 10 anos de idade, com indicação clínica de Rotavírus

Cited by 4 publications

References 8 publications

New insights into the detection and molecular characterization of Cryptosporidium with emphasis in Brazilian studies: a review

New insights into the detection and molecular characterization of Cryptosporidium with emphasis in Brazilian studies: a review

Presença de Cryptosporidium spp em crianças com diarréia aguda em uma creche pública de Recife, Estado de Pernambuco

cryptosporidiosis in livestock and poultry

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