Repository of Research and Investigative Information

Repository of Research and Investigative Information

Ilam University of Medical Sciences

Report of Giardia assemblages and giardiasis in residents of Guilan province-Iran

Mon Jun 17 01:19:34 2024

(2020) Report of Giardia assemblages and giardiasis in residents of Guilan province-Iran. Parasitology Research. pp. 1083-1091. ISSN 0932-0113

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Giardia duodenalis is considered a highly diverse organism that infects a variety of mammalian hosts. Giardiasis is a significant public health problem in Iran. The purpose of this study was to investigate the occurrence of Giardia duodenalis (G. lamblia, G. intestinalis) infections in humans residing in the Guilan province of Iran. Stool samples were collected during 12 months from 8356 individuals that had been referred to certain hospitals in the capital city of Rasht in the Guilan province, of which 4126 were males and 4230 were females. The samples were separated into three groups according to patient age: group A 1-9 years old (n = 483); group B 10-19 years old (n = 491); and group C greater than 20 years old (n = 7382). The wet mount technique was performed directly on 8356 fecal samples for microscopy. Samples were examined using a saline and iodine direct smear technique in order to confirm the presence of G. duodenalis. The results indicated that 2.5 (206/8356) of the samples were identified as positive for G. duodenalis. A total of 30 of the infected patients (n = 62) had no symptoms. In symptomatic cases, the most common symptoms (46, n = 95) were abdominal cramps and bloating. Twenty-four percent of patients (n = 50) had cramps, bloating, nausea, and diarrhea. Sixty positive samples were sent for G. duodenalis genotyping based on the amplification of the gdh gene. Forty-one PCR products were successfully selected and sequenced, where 38 (92.6) samples were identified as genotype A/subgenotype II and in three samples (7.4) genotype B/subgenotype IV. Genotype A-II had a dominant prevalence as compared to the genotype B-IV samples that were identified in the study. Based on the samples provided by the regional teaching hospitals and subsequent sample analysis, the authors concluded that assemblage A-II is most likely the most common Giardia subgroup infection in the Guilan region. Assemblages have been reported in both humans and animals; however, further studies need to investigate the role of domestic animals and water reservoirs as potential sources of Giardia infection in the Guilan region.

Item Type: Article
Forghanparast, K.UNSPECIFIED
Keywords: Giardia lamblia Detection Assemblages Guilan Iran length polymorphism assay real-time pcr risk-factors molecular-identification intestinal parasites genetic-analysis waterborne transmission protozoan parasites sequence-analysis surface-water Parasitology
Page Range: pp. 1083-1091
Journal or Publication Title: Parasitology Research
Journal Index: ISI
Volume: 119
Number: 3
Identification Number:
ISSN: 0932-0113
Depositing User: مهندس مهدی شریفی

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