introduction: intestinal parasites have world wide prevalence and are considered to be as one of the leading hygienic and economic problems in the world. it can be said that there is nowhere in the world without parasitic infestations. the present study was conducted to determine the prevalence of intestinal parasites in patients referring to yazd central laboratory in 2000-2002. methods: the p...

background: blastocystis  is a zoonotic protozoan parasite habit in intestinal tract of humans and wide range of animals. because of the mysterious nature and unknown or less-known aspects of blastocystis, comprehensive information about epidemiology of this parasite is not available. the objective of this study was to investigate the available parasitology studies during the last decade in ira...

Today most emerging infectious diseases, such as sudden acute respiratory syndrome (SARS) and novel influenza A H1N1 (swine flu), arise in the natural environment as zoonoses and are distributed by international commerce and travel. The helminthic infections that can cause eosinophilic meningoencephalitis (EM), such as neuroangiostrongyliasis, baylisascariasis, and gnathostomiasis, share these ...

Human T cell lymphotropic virus type 1 (HTLV-1) infection is associated with an exacerbated type 1 immune response and secretion of high levels of proinflammatory cytokines. In contrast, helminthic infection induces a type 2 immune response. In the present study, the cytokine profile in HTLV-1 carriers coinfected with helminths (Strongyloides stercoralis and/or Schistosoma mansoni) was compared...

S. Romagnanl (Italy) stressed that in the past few years great progress has been made in the knowledge of the cellular and molecular signals responsible for the regulation of human immunoglobulin E (IgE) synthesis. Interleukin-4 (IL-4) and interferon-gamma (IFN-y) are the main regulatory cytokines of lgE production, with opposite effects. T helper (Tii) cells producing IL-4 and IL-5, but no, or...

A study to establish the prevalence of intestinal helminthiases among schoolchildren of riverine communities in the Ilaje-Ese Odo Local Government Area of Ondo State, Nigeria was conducted. Ninety-four percent of the children studied were infected with intestinal helminths. Trichuris trichiura infection was the commonest (84%), followed by Ascaris lumbricoides (75.3 %) and hookworm (7.6 %). Dua...

Ascariasis is one of the most well known helminthic parasite affecting humans. Esophageal asacariasis is extremely rare. We present a case of esophageal ascariasis manifesting as retrosternal chest discomfort.