Multilocus genotyping of Giardia duodenalis isolated from patients in Egypt.
Acta Trop
; 196: 66-71, 2019 Aug.
Article
em En
| MEDLINE
| ID: mdl-31100269
ABSTRACT
Human giardiasis is a common waterborne/foodborne parasitic disease worldwide, especially in developing countries. Prevalence and molecular identity of Giardia parasites are largely controversial. The present study was conducted to determine the occurrence of Giardia parasites and the genetic profile of circulating assemblage(s) in patients attended the outpatient clinic at Kafrelsheikh University hospital, Kafr El Sheikh Province, Egypt. A total of 318 patients, of different age and sex, referred to the clinic were subjected to fecal examination. Microscopic results revealed that 181/318 (56.9%) were positive for Giardia parasites. Multilocus genotyping by PCR/sequencing of beta-giardin (bg), triose phosphate isomerase (tpi), and glutamate dehydrogenase (gdh) genes of representative number of positive samples (65) revealed that assemblages A, B and mixed infections (A + B) occurred in 26/65 (40.0%), 32/65 (49.2%) and 10.8% (7/65) of the analyzed isolates, respectively. MLGs analysis indicated that assemblage A sequences clustered in two novel types of AII sub-assemblage. In assemblage B sequences, BIII was the predominant (22/23, 95.7%) sub-assemblage compared to BIV (1/23, 4.3%). Collectively, assemblage B MLGs displayed greater levels of genetic diversity compared to assemblage A. Our data indicate that assemblages A and B of G. duodenalis circulate in humans at Kafr El Sheikh Province, Egypt, and that high genetic diversity exists at the assemblage and/or sub-assemblage levels.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Giardíase
/
Giardia lamblia
/
Genótipo
Tipo de estudo:
Risk_factors_studies
Limite:
Adult
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Female
/
Humans
País/Região como assunto:
Africa
Idioma:
En
Revista:
Acta Trop
Ano de publicação:
2019
Tipo de documento:
Article