Estado atual da esquistossomose mansônica em Goiás

Barbosa, William; Azevedo, C. D. De; Souza, A. H. Da Silva E; Cunha, Antonio Sa

doi:10.1590/s0037-86821967000400004

Cited by 3 publications

(3 citation statements)

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“…50) used for the infection, which resulted in the low number of adult worms recovered from the animal perfusion. The animal infection in this study was important in estimating the approximate number of eggs counted per day in the faeces, by the fact that the literature suggests that a S. mansoni female is capable of eliminating about 250 eggs per day, being aware that approximately half of these eggs are destined to the intestinal tract and the rest to the circulatory system of the host [1,19,20].…”

Section: Discussionmentioning

confidence: 99%

“…The egg count of each slide should be multiplied by twenty (20), which is the conversion factor of the new TFT-Quant.…”

Section: New Tft-quant Operational Protocolmentioning

confidence: 99%

“…In view of the above, the overall objective of this study was to develop, evaluate and validate the conventional qualitative TF-Test technique for the quantitative diagnosis of S. mansoni eggs and the definition of the conversion factor for EPG estimation. To this end, with the support of the scientific literature [14,[18][19][20][21], this study enabled, in a single laboratory approach, the determination of a conversion factor and operational protocol for a new parasitological technique named TF-Test Quantified (TFT-Quant).…”

Section: Introductionmentioning

confidence: 99%

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TF‐Test Quantified: a new technique for diagnosis of Schistosoma mansoni eggs

Santos

Soares

Rosa

et al. 2019

Tropical Med Int Health

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Objectives Laboratory diagnosis of Schistosoma mansoni eggs is routinely performed by conventional quantitative techniques through the parasitological examination of human faeces. However, the diagnostic sensitivity of this type of exam varies from low to moderate. We aimed to develop a new parasitological technique called TF‐Test Quantified (TFT‐Quant), for the quantitative detection of S. mansoni eggs in human faeces. Methods Four study stages were performed using 43 mice infected by S. mansoni cercariae. These experiments allowed the definition of an operational protocol for TFT‐Quant and a comparison of this new technique to the conventional Helm‐Teste technique. Results The results show a good diagnostic efficacy of TFT‐Quant, which reached 100% in sensitivity and specificity, indicating an ‘Almost Perfect’ Kappa (k) agreement. Conclusions This new technique provided a quantitative gain in the detection of S. mansoni eggs, largely free of faecal debris. The next stage of this study is the field validation of the TFT‐Quant technique with the use of human faecal samples from an endemic region for mansonic schistosomiasis in Brazil (Microregion Jequitinhonha, State of Minas Gerais). In parallel to this validation, computational algorithms will be developed to allow the automated quantitative diagnosis of S. mansoni eggs.

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Section: Discussionmentioning

confidence: 99%

“…The egg count of each slide should be multiplied by twenty (20), which is the conversion factor of the new TFT-Quant.…”

Section: New Tft-quant Operational Protocolmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

TF‐Test Quantified: a new technique for diagnosis of Schistosoma mansoni eggs

Santos

Soares

Rosa

et al. 2019

Tropical Med Int Health

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Experimental infection with Schistosoma mansoni of Biomphalaria straminea from different parts of the Northeast of Brazil

Malek

Rouquayrol

1986

Rev. Inst. Med. trop. S. Paulo

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In the western part of the State of Bahia Biomphalaria straminea and B. glabrata both occur, but in the majority of cases they do not share the same habitat. In the State of Ceará, however, B. straminea is the sole snail host of Schistosoma mansoni. In this survey, no naturally infected B. straminea was found among snails collected from Bahia and Ceará, evidently because of the very low infection rates. The susceptibility of laboratory-reared specimens to infection with a Puerto Rican strain of S. mansoni was then tested experimentally. In general, the snails showed very low susceptibility. The infection rates were 1.1% among snails from Redenção (Ceará); 2.3% in those from Pentecoste (Ceará); 2.9% in snails from São Desidério (Bahia), while they were very high among an albino strain (NIH) of B. glabrata used as control. Another group of B. straminea from São Desidério was exposed to a Bahian strain of S. mansoni and the infection rate was still very low (3.6%) Apparently, the very low susceptibility of B. straminea, despite high snail density, is correlated with moderate infection rates with S. mansoni among humans, as shown by the results of stool examinations conducted by SUCAM in the municipalities of Redenção and Pentecoste, in Ceará.

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Contribuição ao estudo da esquistossomose e das enteroparasitoses em Mato Grosso: relato dos primeiros três casos autoctones de esquistossomose mansoni no Estado de Mato Grosso

Baruffa

Bettin

1981

Rev. Soc. Bras. Med. Trop.

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, 2 7 0 apresentaram ovos vivos de S chistoso m a m ansoni, A d is trib u iç ã o p o r sexo dos p o rta d o re s de esquistossom ose f o i a se g u in te : 167 hom ens (61,8% ) e 103 m u lh ere s (38,2% ). C om re fe rê n c ia à n a tu ra lid a d e , 2 2 9 p a cie ntes eram n a tu ra is d o E stado de M inas Gerais, 17 de P ernam buco, 14 da Bahia, q u a tro de Alagoas, três d o P ia u í e três de M a to Grosso. Os três pacientes de M a to Grosso são d o sexo fe m in in o , co m 10, 17 e 2 3 anos. D ois são n a tu ra is e residem n o m u n ic íp io do R io N egro e u m reside n o m u n ic íp io de R o n d o n ó p o lis sendo n a tu ra l de P oxoréo. Os três nu nca saira m d o Estado. A c h a m o s q u e estes casos revestem -se de grande im p o rtâ n c ia e p id e m io ló g ica p o is que representam a p rim e ira con stataçã o de esquistossom ose m a nsoni a u tó c to n e no E stado d o M a to Grosso. Ê p ro v á v e l que esteja a co n te n ce n d o em M a to Grosso o q u e aco ntece u re ce n te m e n te em G oiás: a im p la n ta ç ã o em área virgem de foco s a u tó c to n e s de S chistosom a m ansoni, através de p o rta d o re s vindos de zonas e ndêm icas de o u tro s estados, p a rtic u la rm e n te M ina s Gerais, B ahia e estados d o Nordeste. IN T R O D U Ç Ã OA esquistossomose m ansoni constitui um dos maiores problemas de saúde pública para o Brasil, não só pelo grande número de infectados mas tam bém pela tendência a expandir-se de acordo com as migrações populacionais e a criação de condições epidemiológicas favorá veis.Prata5, em 1960, calculava existirem no Bra sil 6 milhões de pessoas infectadas. Hoje o nú mero deve ser m u ito maior. A grande corrida dos últim os anos à conquista dos espaços vazios do Centro-Oeste e Am azônia com p o rto u conspícuos deslocamentos populacionais, proceden tes em grande parte das áreas endêmicas do Nordeste, Bahia e Minas Gerais.Sempre de acordo com Prata6, em 1960 po diam ser atribuidos à Bahia 1.900.000 esquistossomóticos, outros tantos a Pernambuco; e 900.000 a Minas Gerais. Não surpreende, en tão, que entre os contingentes de procedência desses estados e lançados à colonização dos vazios amazônicos e matogrossenses, exista uma boa parcela de portadores de esquistosso mose.A té hoje não temos estudos sobre a situação da esquistossomose alóctone no Estado de Mato Grosso, nem temos relatos de casos autóctones.Não é d ifíc il todavia, prever que, como acon teceu no contíguo Estado de Goiás1 ,s a presen ça também em Mato Grosso de portadores alóc-tones acabará im plantando focos autóctones de esquistossomose. Aliás parece ser esta uma itu la r de D oenças Infecciosas e P arasitárias d o Curso de M e d icin a da U niversidade C ató lica de Pelotas -RS. P rofe ssor T itu la r de C lín ic a M édica da F u nda ção U niversidade d o R io G rande -R io G ran de -RS. * * * M é d ico d o H o s p ita l S anta M aria B e rtila -G uira tin g a -M a to Grosso.Recebido para publicação em 2 5 .0 9 .7 8 .

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Estado atual da esquistossomose mansônica em Goiás

Cited by 3 publications

References 1 publication

TF‐Test Quantified: a new technique for diagnosis of Schistosoma mansoni eggs

TF‐Test Quantified: a new technique for diagnosis of Schistosoma mansoni eggs

Experimental infection with Schistosoma mansoni of Biomphalaria straminea from different parts of the Northeast of Brazil

Contribuição ao estudo da esquistossomose e das enteroparasitoses em Mato Grosso: relato dos primeiros três casos autoctones de esquistossomose mansoni no Estado de Mato Grosso

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