nanotubes: Effect of strain and impurity H. Rabiee Golgir, R. Faez, M. Pazoki, H. Karamitaheri, and R. Sarvari School of Electrical Engineering, Sharif University of Technology, P.O. Box 11365-9161, Tehran, Iran Department of Physics, Sharif University of Technology, P.O. Box 11155-9161, Tehran, Iran Institute for Microelectronics, Technische Universitat Wien, Gußhausstraße 27-29/E360, A-1040, ...

BACKGROUND This study was performed to induce conversion of RH strain tachyzoites of Toxoplasma gondii to bradyzoites by pH changing of the culture medium. METHODS HeLa cell monolayers were infected at a 1:1 tachyzoite to cell ratio. Four hours after infection, the culture medium was removed and replaced with culture medium and 5% FCS, adjusted to pH 8 with NaOH. The culture was maintained at...

the efficacy of clindamycin and monensin were evaluated in the prevention of oocyst shedding of kittens with toxoplasma gondii (tehran strain). in this study, 28 healthy kittens aged 1.5 – 2 months old divided randomly into 4 groups of seven. in group 1, kittens were fed with the infected brain tissues of mice, all of seven kittens (100 %), shed oocyst, nearly 1 week after infection, which last...

BACKGROUND The aim of this study was to evaluate the effects of conjugated linoleic acid (CLA) on apoptosis of tachyzoites of T. gondii, RH strain (type I) and the cyst-forming Tehran strain (type II) in vitro. METHODS Toxoplasma strains were injected into the peritoneal cavity of BALB/c mice. The Tehran strain forms cysts in the brain of mice. Bradyzoites within the cysts are reactivated to ...

BACKGROUND Influenza virus is a major infectious pathogen of the respiratory system causing a high degree of morbidity and mortality annually. The worldwide vaccines are decided and produced annually by World Health Organization and licensed companies based on the samples collected from all over the world. The aim of this study was to determine phylogenecity and heterogenecity of the circulatin...

Over a Period of three months (summer), 108 samples of water collected from four hospitals in Tehran. They were taken from numerous potable and non-potable water, including main supply cisterns, calorifiers, hot and cold tap water, shower, cooling tower and drain of air condition system. Culturing of concentrated and non-concentrated water samples on Buffered Charcoal Yeast Extract (BCYE) Agar ...

Diseases related to water impurities may present as major public health burdens. The present study aimed to assess the mutagenicity of drinking water from different zones of Tehran, and evaluate possible health risks through making tea with tea bags, by Ames mutagenicity test using TA 100, TA 98 and YG1029 strains. For this purpose, 450 water samples were collected over the period of July to De...

Objectives: Toxoplasma gondii is an obligate intracellular parasite that infects a broad range of warmblooded animals including human. Tachyzoites of T.gondii invade the host cell, replicate and finally lead to the lysis of the cell. T. gondii is associated with congenital infection and it can cause encephalitis, or systemic infection in immunocompromised patients. It is important to know wheth...

Influenza A virus is always concerned as an infectious agent in birds and other mammalian such as humans. Although it is believed that barriers among various species restrict the transmission of influenza viruses, there are evidences implying that origin of all human influenza viruses is derived from avian influenza viruses. To determine the prevalence of human H1 and H3 viruses in the captive ...