Cysticercus tenuicollis as metacestode of Taenia hydatigena is the most prevalent taeniid species in livestock. Eighty-eight C. tenuicollis samples were collected from sheep (n = 44) and goats (n = 44) of the northern Iran from 2015 to 2016. The isolated parasites were characterized by morphometric keys. The DNA of the larval stage was extracted, amplified and sequenced targeting mitochondrial 12S rRNA and Cox 1 markers. A significant difference in larval rostellar hook length was observed in 12S rRNA haplotypes. Analysis of molecular variance of 12S rRNA indicated a moderate genetic diversity in the C. tenuicollis isolates. The pairwise sequence distance of C. tenuicollis showed an intra-species diversity of 0.3–0.5% and identity of 99.5–100%. Using the 12S rRNA sequence data we found a moderate genetic difference (Fst; 0.05421) in C. tenucollis isolates collected from livestock of the northern and southeastern regions of Iran. We concluded that the genetic variants of C. tenuicollis are being undoubtedly distributing mostly in different parts of Iran. Further studies with a larger number of T. hydatigena isolates collected from various intermediate and definitive hosts are needed to study this evolutionary assumption and also to determine the apparent genetic differences observed in the studied regions.
Hydatid cyst is produced by Echinococous granulosous and it is one of the most important zoonotic infections distributed in the world. Definitive host of this parasite is carnivores and it s Intermediate host is wild and domestic ruminants. In Iran Hydatid cyst infection rate is reported between 11.2% to 64%. By notice to much important of Hydatidosis and many different reports of infection distribution in Iran a survey was developed about the hydatid cyst infection rate in animals and humans of Tabriz city. Based on results of survey hydatid cyst infection rate in [2006][2007] in Tabriz was: In 2006, of the 294540 sheep, infection liver rate were 22190 (7.5%) and infection lung rate were 30238 (10.2%). Of the 62780 cattle, infection liver rate were 2982 (4.7%) and infection lung rate were 5377 (8.5%). Of the 16960 buffalo, infection liver rate were 620 (3.6%) and infection lung rate were1074 (6.3%). Of the 57845 goat, infection liver rate were 2726 (4.7%) and infection lung rate were 3269 (5.6%). Of the 97 camel, infection liver rate were 11 (11.3%) and infection lung rate were 20 (20.6%). In 2007, of the 137437 sheep, infection liver rate were 16402 (11.9%) and infection lung rate were 22244 (16.1%). Of the 33227 cattle, infection liver rate were 2600(7.8%) and infection lung rate were 4343 (13%). Of the 7582 buffalo, infection liver rate were 535 (7%) and infection lung rate were 760 (15.2%). Of the 19969 goat, infection liver rate were 1777 (8.8%) and infection lung rate were 2253 (11.2%). And of the 17 camel, infection liver and lung rate were 0 (0%).
Introduction: Cancer patients are susceptible to severe parasitic infections particularly Strongyloides stercoralis (S.s) infection. Accordingly, this study aimed to determine the prevalence of parasitic infections with highlighting Strongyloides stercoralis infections in 139 cancer patients admitted to oncology ward of Imam Khomeini hospital of Sari during 2009. Material and Methods: In this descriptive and cross-sectional study, fecal samples (n=139) were collected from different cancer patients. After completing the questionnaires, the samples were examined by direct smear and formalin ether sedimentation methods. Results: In this study, of 139 patients with different types of cancer 53.9 % (n=75) and 46.1% (n=64) were male and female, respectively. In the stool exam, two cases (1.4%) infected with Rhabditiform larvae of S.s were detected while both of them were affected with Multiple Myeloma cancer. Conclusion: This study showed that in endemic areas, three times stool examination by formalin-ether technique for detecting Strongyloides stercoralis must be requested before chemotherapy in cancer patients.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.