There are about 962 clinical studies being (or have been) conducted in Iran, Islamic Republic of. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
This study is a randomized controlled clinical trial to compare the pregnancy outcomes of mild and minimal stimulation in infertile women with polycystic ovarian syndrome. The study population consisted of all infertile women with polycystic ovary syndrome based on Rotterdam criteria who have not succeed to achieve fertility despite multiple treatments such as drug therapy, laparoscopic surgery, and the frequent failure of induction therapy using gonadotropins and are now candidate for in vitro fertilization (IVF) or intra cytoplasmic sperm injection (ICSI) in Reproductive Biomedicine Research Center, Royan institute, Tehran Iran.
The purpose of this prospective cohort study is to compare upper GI symptoms and endoscopy findings in Canada with Japan and Iran, and correlate this with the upper GI microbiome. The investigators plan to recruit 500 new patients referred for upper GI endoscopy in Canada (McMaster University) and 500 in Japan (Tohoku University Hospital) and 500 from Iran (Tehran University of Medical Sciences). Written consent will be obtained from all participants. Patients will complete three symptom questionnaires and a demographic one before endoscopy. Then saliva collection device will be applied for collecting saliva and microbiota from the oral cavity. Esophagogastroduodenoscopy (EGD) will be performed thereafter and brushing of the esophagus, stomach, and the duodenum will be done using a sterile sheathed brush (one for each site) to sample collect gut microbiota and gastric biopsies will be done for assessing H.pylori status. In addition, a group of these patients will undergo measurement of nitrate reductase activity (NRA) in their oral cavity. This will be done on twenty erosive gastro-esophageal reflux disease (GERD) patients, twenty non-erosive GERD patients, and twenty patients without any endoscopic or clinical GERD. This latter part of the study will be done at the Canadian and Iranian sites only. Bacterial community profiling of the 16S rRNA gene will be carried out using paired end reads of the V3 region. Triplicate amplifications will be pooled for 150 or 250 nt paired-end Illumina sequencing in the McMaster Genome Center. For specific substudies analysis of the mycome will also be carried out.
In this prospective controlled cross over clinical trial, the investigators aim to evaluate the efficacy and safety of acetazolamide for the management of metabolic alkalosis in children with Bartter syndrome. Urine and blood electrolytes will be measured before and after acetazolamide treatment. The primary end point is a change in polyuria, hypokalemia, and metabolic alkalosis.
patients who are candidates of PRK will be recruited in this intrasubject randomized clinical trial. Inclusion criteria are myopia or myopic astigmatism with refractive cylinder. Exclusion criteria were unstable refractive error, age less than 21 years old, corneal opacity, keratoconus, keratoconus suspects, residual corneal stromal thickness less than 350 µm, moderate or severe dry eye disease and any other ocular pathology other than refractive error. Complete eye exam will be performed preoperatively including: uncorrected distance visual acuity (UDVA), best spectacle corrected distance visual acuity (CDVA), cyclorefraction, slit lamp biomicroscopy, Goldmann applannation tonometry, dual scheimpflug tomography (Ziemmer), topography in mesopic condition accompanied by pupilometry and iris registration (Topolyzer Vario, Alcon Laboratories, Inc., Fort Worth, TX), and funduscopy with dilated pupil. Surgical Technique The same surgeon (A.F.) will perform all surgeries. After installation of Tetracaine 1%, periorbital skin will be prepared with povidone iodine 5%. Iris registration will be performed in all eyes before epithelial removal. Ethylalcohol 20.0% into a 9.0 mm well for 20 seconds will be applied on the central cornea, and then the epithelium of the central 9.0 mm area will be removed by hockey knife. In the right eye of each patient PCS compensation will be turned on (PCS-On group) and in the left eye it will be turned off (PCS-Off group). Excimer laser ablation will be performed by Wavelight Allegretto EX500 (Alcon, Fort Worth, TX, USA). Selection of which eye to be first ablated will be done randomly. Randomization will be performed based on a computer software by a Biostatistician which produced the first eye to be operated. Static cyclotorsion compensation will be active in all eyes. The ablation profile will be wavefront-optimized in all cases. Postoperative Course Postoperatively, chloramphenicol 0.5% eye drops and betamethasone 0.1% eye drops will be prescribed every 6 hours for 10 days. Thereafter, Fluorometholone 0.1% eye drops every 6 hours for 1 month and every 8 hours for the next month will be given. Follow-up examinations were scheduled at 1, 2, 3, 4, 7 and 15 days and 1, 2, 3, and 6 months postoperatively. After contact lens removal each follow-up examination includes the UDVA, manifest refraction, and IOP measurements as well as a slit lamp biomicroscopy. Corneal imaging with Galilei tomography, CDVA and cyclorefraction will be performed at the final follow-up examination 6 months postoperatively.
In this study, 40 patients with a history of Mild- Periodontitis who were diagnosed with clinical and radiographic findings showed that all of the periodontal parameters before the treatment, during the treatment period Then, scaling & Root planing and oral hygiene instructions were given to the patients, and after 2 weeks, the patients who received the study were randomly divided into two groups (Balanced Block Randomization) with four blocks according to the visit time. To group A, oral chlorohexidine and to B group, the drug Ketorolac was given. 5 mm of the drugs required every 15 days the areas underwent a gingival wash with an insulin syringe, which lasted for 3 months.
The aim of this study is to compare the effects of Ivabradine and metoprolol to reduce heart rate prior to coronary CT angiography in patients with advanced heart failure.
The aim of this study is to evaluate the efficacy of daily intake of fortified sunflower oil with vitamin D on serum 25-hydroxyvitamin D level, glycemic and lipidemic status in healthy subjects compared to plain oil.
GM2 gangliosidosis is an autosomal recessive subtype of Lysosomal Storage Diseases in which, Hexosaminidase A-B deficiency is caused by HEXA-B gene. HEXA deficiency is seen in Tay sachs and HEXB deficiency causes Sandhoff disease. Infantile forms of Sandhoff and Tay sachs are often lethal and management of the patients is supportive including nutrition, hydration, seizure control and management of respiratory problems. Recent studies have suggested new methods of treatment, such as enzyme replacement therapy, bone marrow transplantation and substrate reduction therapy. The first drug used in SRT was Miglustat. It was introduced in 1980 as an anti HIV agent and later, it was registered under the trademark of Zavesca in 2009 and was used in treatment of Gaucher and Niemann-Pick disease. Zavesca passes blood brain barrier, so causes reduction of cholesterol and glycosphingolipids CNS neurons and relief of neurologic manifestations. Improvements were seen in oculomotor function, cognition, swallowing, motor disturbances and psychological problems after treatment with Zavesca. No effect has been proved on visceral involvement. Weight loss during first year of treatment, diarrhea and dyspepsia are seen as side effects. Studies on SRT in lysosomal storage disease have different results. Some show improvements in manifestations of Gausche, Sandhoff & Tay sachs disease, while others show no valuable benefit for this method of treatment. Finding an effective treatment for these chronic diseases can improve quality of life for the patients and their families, and also reduce costs for healthcare services. The controversy persists and more studies are needed for judgment. So this study is done to evaluate the effect of Miglustat therapy in Sandhoff and Tay sachs disease, and is believed to help for further studies in this field.
after advent of RD photoreceptor degeneration Occurred. This process appears as a incredible and progressive event that will not stop till reattachment of RPE and neurosensory retina happened . Process of degeneration begins from first hours of RD establishment Neuroprotection of photoreceptor following RD is a novel and debatable discussion encountered in recent years . How to stop this phenomena and neuroprotective agent role in this issue are a new interest of researches. In the study investigators are planning to perform a clinical trial to demonstrate the minocycline neuroprotective effect in a double blind design as this impact has been implicated previously in a animal study.
Consumption of extra-virgin olive oil has beneficial effects on cardiovascular risk factors. The purpose of this study is to compare the effects of extra-virgin olive oil and refined olive oil, in adjunct to conventional medical treatment, in improving liver enzymes, plasma lipid profile and inflammatory markers in patients with cardiovascular risk factors.