Publications by authors named "Nader Pestehchian"

Background: Toxocariasis is a parasitic disease caused by the larval stage of Toxocara canis and Toxocara cati. Infective stage of this parasite for human develops on soil. So, in this work contamination of the soil of public environments in five geographical areas of Isfahan province of Iran has been investigated.

View Article and Find Full Text PDF

Background: Hydatid cyst (HC) is the larval stage of the canine intestinal tapeworm (cestode), Echinococcus granulosus. In addition to the high global economic cost of livestock farming, the infection can lead to dangerous problems for human health. Therefore, research into new diagnosis and treatment approaches is valuable.

View Article and Find Full Text PDF

Trichuriasis is one of the most common soil-transmitted helminth (STH) infections, affecting populations globally. The condition is particularly prevalent in tropical and subtropical areas with low levels of sanitation and poor living conditions. The objective of this systematic review and meta-analysis was to evaluate the prevalence of Trichuris trichiura infection in Asia at the country and region level.

View Article and Find Full Text PDF

Background: We aimed at genotyping and evaluating the predominance of assemblages isolated from patients referred to medical laboratories in Khorramabad, Iran from Nov 2015 to Sep 2016. Hence, the development of a cost-effective HRM approach to determine genotypes of based on the triosephosphate isomerase (tpi) gene was examined and the genotyping results with and without diarrhea was compared.

Methods: Seventy positive fecal samples were collected.

View Article and Find Full Text PDF

Background: Toxocariasis is a worldwide zoonotic parasitic disease caused by species of Toxocara and Toxascaris, common in dogs and cats. Herein, a meta-analysis was contrived to assess the prevalence of Toxocara/Toxascaris in carnivore and human hosts in different regions of Iran from April 1969 to June 2019.

Methods: The available online articles of English (PubMed, Science Direct, Scopus, and Ovid) and Persian (SID, Iran Medex, Magiran, and Iran Doc) databases and also the articles that presented in held parasitology congresses of Iran were involved.

View Article and Find Full Text PDF

Objectives: The aim of this study was to evaluate the efficacy of pyrimethamine-loaded poloxamer 407 nanomicelles on Plasmodium berghei strain NICD in vivo.

Methods: Pyrimethamine-loaded nanomicelles were prepared and their zeta potential, particle size and polydispersity index were measured. For antiplasmodial assessment, 54 mice were randomly divided into six groups.

View Article and Find Full Text PDF

Background: can infect a wide range of mammalians, especially humans. It controls several intracellular signals for the inhibition of apoptosis. This study aimed to investigate the apoptogenic effect of cisplatin and sodium azide on infected HeLa cells and isolate apoptotic bodies (blebs) as a potent stimulator of the immune system.

View Article and Find Full Text PDF

A novel series of antimony (V) complexes with the hydroxypyranone and hydroxypyridinone ligands were synthesized and characterized by HNMR, FT-IR and electron spin ionization mass spectroscopic (ESI-MS) techniques. The synthesis process involved protection of hydroxyl group followed by the reaction of the intermediate with primary amines and finally deprotection. All compounds were evaluated for activities against the amastigote and promastigote forms of .

View Article and Find Full Text PDF

The purpose of the present study was to design nanoassemblies of chitosan-titanium dioxide (TiO) nanoparticles (NPs) loaded with glucantime for using their synergistic effects and enhancing the toxic effects of glucantime on Leishmania parasites. The nanoassemblies were prepared by electrostatic interactions and optimized by a response surface central composite design. The effects of glucantime, chitosan and TiO NPs amounts were studied on the particle size, zeta potential, loading efficiency, and release efficiency of drug from nanoassemblies.

View Article and Find Full Text PDF

is an intestinal flagellated protozoan and the common cause of gastrointestinal diseases in human. This parasite can be seen in two different forms in its life cycle including as cyst and trophozoite. Due to presence of resistant cyst wall, DNA extraction inhibitors along with artifact in stool specimens, this study was performed aiming to evaluate four methods for DNA extraction from cysts.

View Article and Find Full Text PDF

High-resolution melting (HRM) is a reliable and sensitive scanning method to detect variation in DNA sequences. We used this method to better understand the epidemiology and transmission of Echinococcus granulosus. We tested the use of HRM to discriminate the genotypes of E.

View Article and Find Full Text PDF

Introduction: Although a notable development in treating and controlling of parasitic infections in recent years has occurred but, these infections are still counted as important problems in many countries.

Aim: The aim of this study is to determine the prevalence of intestinal parasitic infections in the inhabitant and tribe populations who were referred to central health care of Chelgerd, Iran.

Materials And Methods: This descriptive cross-sectional study was carried out from April 2008 to October 2009 in Chelgerd, Iran.

View Article and Find Full Text PDF

Background: Multiple Sclerosis (MS) is a chronic demyelinating disease of the central nervous system which has been identifies more prevalent in economically developed countries than in the developing countries. Low prevalence of parasitic infections (which can activate immune response and prevent or modulate damage to host antigens) in these areas is among the possible responsible factors for such a difference. In this study we aimed to compare frequency of blood-tissue parasitic infections in patients with MS, as compared to their healthy family members.

View Article and Find Full Text PDF

Background: Cutaneous leishmaniasis (CL) continues to be an increasing public health problem in Iran. The dominant etiologic agents of CL in the Old World are Leishmania major and Leishmania tropica. One of the important endemic foci of CL in Iran is Yazd.

View Article and Find Full Text PDF

Background: Differentiation between Entamoeba histolytica and Entamoeba dispar is very important for both clinical therapy and epidemiological studies. Although these two species are morphologically identical, they have differences in genetic, chemical specifications and pathogenicity. This study was carried out to differentiate E.

View Article and Find Full Text PDF

Cryptosporidium is one of the most common causes of diarrhea in the world, which can be severe and prolonged in immunocompromised patients. We compared the prevalence rate of Cryptosporidium infection in hemodialysis patients and 2 control groups (i.e.

View Article and Find Full Text PDF