Publications by authors named "Hend El-Taweel"

Cases of imported malaria are reported each year in several malaria non-endemic countries, including Kuwait. PCR testing is the ideal method for identification of the infecting spp. The present study documented the epidemiologic characteristics of molecularly confirmed cases of imported malaria in Kuwait during the first year of COVID-19 pandemic.

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Immunity to malaria has a major role in controlling disease and pathogenesis with cytokine production being involved in almost every phase of the immune response. The present study aimed to assess hematological variables and to measure plasma levels of TNFα, IFNγ and IL10, their ratios, and their relation to parasitemia among patients with uncomplicated falciparum malaria in Hodeidah, Yemen. Forty patients with uncomplicated P.

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Understanding the key regulator of iron homeostasis is critical to the improvement of iron supplementation practices in malaria-endemic areas. This study aimed to determine iron indices and hepcidin (HEPC) level in patients infected with compared to apparently healthy, malaria-negative subjects in Hodeidah, Yemen. The study included 70 -infected and 20 malaria-negative adults.

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Background: is a diarrheagenic eukaryotic parasite that consists of at least eight morphologically identical but genetically distinct genotypes. Human giardiasis is caused mainly by A and B assemblages.

Aim And Objectives: The study aimed to compare the performance of polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and assemblage-specific primers in genotyping of .

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MicroRNAs (miRNAs) play regulatory roles in several diseases. In schistosomiasis, the main pathological changes are caused by the granulomatous reaction induced by egg deposition. We aimed to study the changes in host miRNA-223 and miRNA-146b expression in relation to egg deposition and development of hepatic pathology in murine schistosomiasis mansoni.

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and cause frequent infections in children in developing countries. However, the role of intestinal inflammation in their pathogenesis is still poorly understood. Faecal calprotectin (FC) level is used as an indicator of intestinal inflammation and neutrophil migration in the intestinal tract.

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is one of the less well-understood waterborne protozoa of medical and veterinary importance. The present study aimed to detect, identify, and subtype in cattle and humans in northern Egypt and to investigate the potential for zoonotic transmission. Fecal samples were collected from 136 humans (68 in contact with animals and 68 no animal contact) and 190 cattle from a rural area in Kafr El-Sheikh Province, Egypt.

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is a common diarrheagenic parasite infecting children globally. It has been classified into eight morphologically identical but genetically distinct genotypes. Human infection is mainly associated with A and B assemblages with variable geographical distribution.

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This study aimed to assess the performance of formalin ethyl acetate (FEA)/modified Ziehl-Neelsen (MZN), and percoll technique/MZN for the diagnosis of cryptosporidiosis among asymptomatic children compared to ELISA coproantigen. The study was conducted on 100 children in a rural area in Kafr El-Sheikh governorate. Stool samples were collected and examined by the three techniques.

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Purpose: Toxoplasma gondii is an apicomplexan parasite that exhibits distinct strain-related virulence patterns in mice. It can induce hepatic inflammation. The present study investigated MicroRNA-155 (miRNA-155) expression and butyrylcholinesterase (BChE) activity in the liver tissue of mice infected with virulent and avirulent strains of T.

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Our objective was to study the prevalence of intestinal parasitic infections among humans and their contact livestock animals in a rural community in Gharbia governorate, Egypt. The collected human and livestock animal fecal samples were examined by formol ether sedimentation technique and modified Ziehl-Neelsen stain. Human samples were further examined by the Kato-Katz technique.

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Background And Aim: The World Health Organization and the Food and Agriculture Organization list , a foodborne cestode, as the most widely distributed human tapeworm worldwide. The larval stage of , , causes cysticercosis in bovines and infects humans who eat raw or undercooked beef. The existing detection methods of in cattle depend on the visual inspection of meat.

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Purpose: In many tropical areas, the coinfection of Schistosoma spp. and other pathogens is frequent. The impact of schistosomiasis on other infections has been demonstrated for several organisms.

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In the intermediate hosts, tachyzoites of T. gondii predominate in the acute stage while bradyzoites persist inside tissue cysts with the potential for reactivation. The two stages exhibit different metabolic and antigenic characters.

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Background: Giardia intestinalis is a common cause of gastrointestinal illness especially in children of developing countries. Giardia assemblages A and B are the major human infective genotypes.

Objective: The present study aimed to investigate the role of water supply in the epidemiology of giardiasis via genotyping G.

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The pathogenesis of irritable bowel syndrome (IBS) is not yet clear. Our study suggested parasitic infection and other plausible risk factors among Egyptian IBS patients. We studied 40 IBS patients diagnosed according to Rome III criteria (Group I), 40 with other gastrointestinal symptoms (Group II) and 40 healthy controls (Group III).

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Background: The development of new antischistosomal drug remains a pressing need and a vital challenge in front of many researchers through screening the natural or chemical substances for their potential activity as antischistosomal agents.

Methods: Five groups of -infected mice (n=10) were enrolled in this study, the G1 was infected non-treated control group. G2 was infected treated with praziquantel 500 mg/kg for 2 consecutive days.

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Infection is a significant cause of morbidity and mortality in patients with chronic kidney disease (CKD) due to their depressed immunity. T. gondii is a ubiquitous parasite that causes severe manifestations in immunocomprmised patients.

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Infections with intestinal protozoa continue to be a major health problem in many areas of the world. The widespread use of a limited number of therapeutic agents for their management and control raises concerns about development of drug resistance. Generally, the use of any antimicrobial agent should be accompanied by meticulous monitoring of its efficacy and measures to minimize resistance formation.

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The distribution of Toxoplasma gondii genotypes varies from one geographic area to another. The present study aimed to determine T. gondii genotypes associated with human infection in Egypt.

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Microsporidia are emerging opportunistic parasites. Preservation of the biological properties of microsporidian spores is often required in research work. The present study compared two preservatives; zinc polyvinyl alcohol (zinc PVA) and potassium dichromate solutions for preservation of microsporidian spores separated from human faecal samples.

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The epidemiological pattern of cryptosporidiosis and other intestinal parasites were studied among 3 orphanages in Sana'a City. A total of 292 orphans (225 males & 67 females), aged 4-20 years old were recruited. A questionnaire of demographic information, health status and other relevant information was filled out for each one.

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In the present study, methanol was used instead of Schaudinn's fluid for preparation of permanently stained faecal smears. The efficacy of this method to detect Giardia lamblia trophozoites and cysts were compared to merthiolate iodine formalin (MIF) direct smear method and MIF concentration (MIFC) technique. Fresh faecal samples were collected from school students with gastrointestinal symptoms.

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This study assessed levels of growth hormone, albumin and ferritin in human fascioliasis and schistosomiasis. Forty three patients and ten healthy parasite free subjects were included as controls. All were subjected to clinical, parasitological, and haematological examinations.

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The role of sFas in human toxoplasmosis was designed, included 23 pregnant women serologically positive for anti-Toxoplasma antibodies, and ten sero-negative pregnant females constituted the control group. Antibody titer was assessed by indirect haemagglutination test. The presence of specific IgM antibodies was determined by comparing antibody titer before and after serum treatment with 2-mercapto-ethanol.

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