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Showing 3 results for Echinococcus Granulosus
Rostami Nejad M (bs), Nazemalhosseini Mojarad E (msc), Taghipour N (msc), Nochi Z (msc), Cheraghipour K (msc), Dabiri H (phd), Mohebbi Sr (phd), Noorinayer B (md), Zali Mr (md),
Volume 13, Issue 2 (7-2011)
Abstract
Background and Objective: Several strains of the Echinococcus granulosus have been described based on morphological characters, intermediate host specificity and/or genetic analysis of mitochondrial and nuclear DNA. The aim of this study was to characterize different E.granulosus isolates by using sequences of mitochondrial atp6 gene.
Materials and Methods: In this study, Sixty infected liver and lungs of cattle, sheep and goats were collected from the abattoir of Varamin city-Iran during 2008. Protoscoleces were removed from each fertile cyst and DNA extracted. New and specific primers were designed for two existing genotypes (G1 and G6) of E. granulosus known to occur in Iran and applied in PCR reactions.
Results: The new primers selectively amplified the G1 and G6 genotypes of E. granulosus with specific bands of 708 and 705 bp respectively. The G1 genotype was identified in all fertile cyst samples.
Conclusion: This study showed that the new primer pairs which specifically amplify portions of the mitochondrial atp6 gene of the G1 and G6 strains of Echinococcus granulosus are proper molecular marker for investigating genetic variation in a number of isolates of E. granulosus from a range of hosts (sheep, goats, cattle) in Iran. The result of sequenced samples showed that our sequences were the same as those reported previously for these strains.
Amir Reza Youssefi, Mohammad Reza Youssefi , Mohaddeseh Abouhosseini Tabari,
Volume 21, Issue 4 (12-2019)
Abstract
Background and Objective: Echinococcosis garnulosus is a major zoonotic disease, and surgery is the best treatment for it. So far, several chemical scolicidals have been used to prevent protoscolices leakage during surgery, but due to their adverse effects were not well-received. Therefore, using medicinal plants or compounds driven from them as alternatives were taken into consideration. This study was conducted to compare the in vitro effect of Cannabis sativa essential oil with albendazole on protoscolices of hydatid cyst.
Methods: In this descriptive-analytic study, essential oil of C. sativa was prepared from aerial parts of the plant in flowering season in university of Camerino, Italy, and Gas chromatography – mass spectrometry (GC-MS) analysis was performed. Protoscolices were extracted from the livers infected with hydatid cyst and were exposed to different concentrations of C. sativa (1, 2, 5 and 10 μg/ml) for 10, 30, 60 and 120 minutes. The viability of protoscolices was measured by 0.1% eosin staining. Albendazole was used as a standard medicinal drug.
Results: Essential oil of C. sativa at all tested concentrations led to significant mortality in protoscolices which showed a direct relation with increase in concentration (P<0.05). The highest concentration of albendazole after 2 h led to 13.24% mortality rate while, this amount with C. sativa essential oil at 2µg/ml reached to 20.9%, and at 10µg/ml reached to 26.08%.
Conclusion: This study showed that C. sativa essential oil has promising scolicidal effect compared to albendazole and can be suggested as a natural protoscolicidal agent.
Zahra Jafari , Mohamad Hossein Razi Jalali , Sara Larki , Mohamad Khosravi ,
Volume 26, Issue 3 (10-2024)
Abstract
Background and Objective: Colorectal cancer is the third most common cancer in men and the second most common in women. The use of parasites or parasite antigens is one of the newest therapeutic approaches for cancer, although it has not yet been used or approved in human trials. This study aimed to determine the cytotoxic effects of purified carbohydrates from the hyaline layer, fluid, and protoscolices of hydatid cysts on the human colorectal cancer cell line (LS174T).
Methods: This descriptive-analytical study was conducted on two sheep and two cow livers infected with hydatid cysts, and the human colorectal adenocarcinoma cell line (LS174T) purchased from the Pasteur Institute of Iran at the Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Iran during 2022. Cyst fluid, protoscolices, and the hyaline layer were isolated from the hydatid cyst-infected livers, and glycoproteins and glycolipids from different parts of the cyst were extracted using the chloroform-methanol method. Carbohydrates were purified using the beta-elimination method and their presence was confirmed using the phenol-sulfuric acid method. The cytotoxicity of purified carbohydrates on the LS174T cell line was evaluated using the methyl tetrazolium (MTT) assay for 24 hours.
Results: Concentrations of 0.5 and 0.25 of purified carbohydrates from glycoproteins and glycolipids of hydatid cysts significantly inhibited the growth of LS174T cells (P<0.05). Initial cytotoxicity evaluation showed that purified carbohydrates from glycoproteins of sheep cyst fluid (38.60±1.33%), glycoproteins of cow cyst hyaline layer (36.61±1.76%), glycolipids of cow cyst hyaline layer (38.94±2.99%), glycoproteins of cow cyst protoscolices (40.27±3.66%), and glycolipids of sheep cyst protoscolices (37.94±1.99%) had significantly more pronounced inhibitory effects (P<0.05). Subsequent screening with the MTT assay revealed that purified carbohydrates from glycoproteins isolated from sheep hydatid cyst fluid (52.35±10.24%), glycolipids isolated from cow hydatid cyst hyaline layer (53.40±7.88%), and glycolipids isolated from sheep hydatid cyst protoscolices (53.05±5.06%) had significantly more pronounced inhibitory effects on the growth of LS174T cancer cells (P<0.05).
Conclusion: Carbohydrates isolated from glycoproteins and glycolipids of the hyaline layer, fluid, and protoscolices of hydatid cysts have significant anticancer effects on the LS174T colorectal cancer cell line.
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