accessory pathways (ap) are abnormal myocardial connections between atria and ventricles with electrical conductive properties. we performed radio frequency (rf) catheter ablation in 66 patients with manifest ap at dr.shariati hospital during 5 years. bipolar mapping was used in 48 patients and unipolar mapping in 18 patients of find the best site for rf energy delivery. we calculated total dur...

introduction: patients administered with a therapeutic dose of 131i for thyroid cancer treatment are potential sources of unacceptably high radiation exposure to other individuals, particularly the patient's immediate family members. the aim of this study is to investigate effects of early liothyronine consumption after radio-iodine therapy on accumulated dose and exposure rate in patients with...

background: gts, ptsm and atsm are bis-thiosemicarbazone ligands used in the preparation of copper radiopharmaceuticals. chemical structure of these materials indicates that they should have radio-protective effects. objective: to study the radio-protective effects of gts, ptsm and atsm. methods: this study has focused on radio-protective effects of these compounds at different doses (20, 40 an...

background: contrast nephropathy will increase mortality up to 30% following angiographic procedures. adenosine is a crucial mediator of contrast-induced nephropathy. the purpose of this study was to investigate whether the adenosine antagonist theophylline reduces the incidence of cn after coronary angiography. methods: in this randomized, double-blind, placebo-controlled clinical trial study,...

background: about 83% of patients with breast cancer (bc) undergo radiation therapy. these patients show various degrees of mild to acute reactions during and after the completion of treatment.the aim of this study was to compare inherent radiosensitivity of gamma-irradiated g0-lymphocytes between bc patients and normal individuals using cytokinesis blocked micronucleous assay. methods: three t...

av-node modification by catheter rf energy delivery is treatment of choice in the symptomatic patients with avnrt. this study included 30 patients with avnrt (19 women, 11 men). we did slow pathway ablation in 29 cases successfully. maximum effective energy delivery was 40 watts for 40 msec. 1:1 av conduction increased from 290±40 msec before ablation to 340±65 msec after ablation. also av-node...

Vaccination of livestock with effective vaccine could be one of the control methods for hydatid cyst. In this study a new recombinant vaccine (Eg95) from New Zealand was prepared and used. Thirty health sheep from the same race and identical age and sex were selected. There was no history of any past vaccination or disease in selected animals. Animals were randomly categorized to four groups. O...

Avian Pasteurella multocida is the causative agent of fowl cholera, a disease much affecting the poultry industry. In order to study the efficacy of the recombinant subunit vaccine constructed with ptfA gene of avian P. multocida, the ptfA gene fragment amplified by PCR from avian P. multocida was cloned into the prokaryotic expression vector pET32a and the recombinant plasmid pET32a-ptfA was o...

Background and Aims: Infectious bursal disease (IBD) is an acute contagious viral disease of birds worldwide. The causative virus induces a persistent immune suppression following destroy B lymphocytes precursors in bursal lymphoid follicles. Vaccination is the main strategy for prevention of the disease in commercial poultry industry. Materials and Methods: To produce a live vaccine against th...