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alireza peyman

Aydin Hassani, Alireza Khataee, Semra Karaca, Canan Karaca, Peyman Gholami
TiO2/Montmorillonite (TiO2/MMT) nanocomposite as sonocatalyst was produced by immobilizing synthesized TiO2 on the surface of montmorillonite. The characteristics of produced nanocomposite were investigated using XRD, XRF, FTIR, TEM, SEM, EDX, UV-vis DRS and nitrogen adsorption-desorption analyses. The synthesized TiO2 and TiO2/MMT samples were applied as catalysts for sonocatalytic degradation of ciprofloxacin (CIP). The performance of the TiO2/MMT was greater than pure TiO2 sample in treatment of CIP solution...
October 1, 2016: Ultrasonics Sonochemistry
Peyman Arfa, Abdollah Karimi, Sedigheh Rafiei Tabatabaei, Alireza Fahimzad, Shahnaz Armin, Mohammad Sistanizad
Concerns about increasing bacterial resistance to vancomycin, have caused the adult treatment guidelines to recommend higher trough concentrations based on the type and location of infectious disease. Although these recommendations are not specific to children, the values can be extrapolated. This prospective study was designed to evaluate efficacy of current vancomycin dosing recommendations to achieve therapeutic trough serum concentration in pediatric patients. Laboratory data, vancomycin dosing and subsequent serum concentrations of children in a community teaching pediatrics hospital were collected and analyzed...
2016: Iranian Journal of Pharmaceutical Research: IJPR
Elham Ehrampoush, Peyman Arasteh, Reza Homayounfar, Makan Cheraghpour, Meysam Alipour, Mohammad Mehdi Naghizadeh, Maryam Hadibarhaghtalab, Sayed Hosein Davoodi, Alireza Askari, Jalaledin Mirzay Razaz
BACKGROUND: The percent and distribution of body fat are important factors in the pathogenesis of numerous diseases. Our aim was to investigate common anthropometric indices in their relationship with body fat content. METHODS: In a cross-sectional study 1360 healthy individuals (580 men and 780 women) in a cluster sampling, from Ahvaz, Iran, body fat content (using bioelectrical impedance) and anthropometric measurements [weight, waist circumference, a body shape index, abdominal volume index, body adiposity index, conicity, body mass index, hip circumference, waist to hip ratio and waist to height ratio] was obtained...
August 23, 2016: Diabetes & Metabolic Syndrome
Ram Vinod Roy, Abdolreza Ardeshirylajimi, Peyman Dinarvand, Likui Yang, Alireza R Rezaie
Activation of PAR1 by activated protein C (APC) and thrombin elicits paradoxical cytoprotective and cytotoxic signaling responses in vascular endothelial cells through cleavage of the receptor at Arg-46 and Arg-41 protease recognition sites, respectively. It has been reported that unlike a disruptive G-protein mediated PAR1 signaling by thrombin, APC induces a protective β-arrestin-2 biased PAR1 signaling by unknown mechanisms. We hypothesize that the occupancy of endothelial protein C receptor (EPCR) by the Gla-domain of protein C/APC is responsible for the β-arrestin-2 biased PAR1 signaling independent of the protease cleavage site...
August 25, 2016: Blood
S M Hassanian, A Ardeshirylajimi, P Dinarvand, A R Rezaie
: Essentials Polyphosphate (polyP) activates mTOR but its role in Wnt/β-catenin signaling is not known. PolyP-mediated cyclin D1 expression (β-catenin target gene) was monitored in endothelial cells. PolyP and boiled platelet-releasates induced the expression of cyclin D1 by similar mechanisms. PolyP establishes crosstalk between mTOR and Wnt/β-catenin signaling in endothelial cells. SUMMARY: Background Inorganic polyphosphate (polyP) elicits intracellular signaling responses in endothelial cells through activation of mTOR complexes 1 and 2...
October 5, 2016: Journal of Thrombosis and Haemostasis: JTH
Mohammad Ali Babai, Peyman Arasteh, Maryam Hadibarhaghtalab, Mohammad Mehdi Naghizadeh, Alireza Salehi, Alireza Askari, Reza Homayounfar
In this study we evaluated and redefined the optimum body mass index (BMI) cut-off point for the Iranian population based on metabolic syndrome (MeS) risk factors. We further evaluated BMI cut-off points with and without waist circumference (WC) as a cofactor of risk and compared the differences. This study is part of the largest surveillance programs conducted in Shiraz, Iran, termed the Shiraz Heart study. Our study sample included subjects between the ages of 20 to 65 years old. After excluding pregnant women, those with missing data and those with comorbid disease, a total of 12283 made up the study population...
2016: PloS One
Masoud Pourmoghaddas, Alireza Khosravi, Mohammadreza Akhbari, Mojtaba Akbari, Mohamadreza Pourbehi, Fereshteh Ziaei, Leila Salehizade, Nahid Sistan, Masoumeh Esmaeili, Peyman Bidram
BACKGROUND: Resistant hypertension is a common clinical problem of blood pressure that is not controlled despite the simultaneous application of multiple antihypertensive agents. Ablation of renal afferent nerves has been applied and proved to decrease hypertension and injuries produced by severe sympathetic hyperactivity. The main objective of this study was to investigate the long-term effect of renal artery sympathetic ablation and its complications in patients with treatment-resistant hypertension...
March 2016: ARYA Atherosclerosis
Faroogh Parsipour, Hassan Razmju, Fatima Khatavi, Maryam Panahi, Alireza Nouralishahi, Alireza Peyman
AIM OF STUDY: The aim of this study is to assess wavefront aberration and contrast sensitivity (CS) after implantation of foldable iris claw - artiflex- and rigid iris claw - artisan- phakic intraocular lenses (pIOLs). MATERIALS AND METHODS: A nonrandomized prospective comparative case study was performed on 57 eyes; of which, 54 were myopia and 3 were hyperopia. Twenty-four patients had artisan pIOL implantation and 33 had artiflex pIOL implantation. Higher-order aberration (HOA) and CS were obtained 1 year after surgery...
May 2016: Indian Journal of Ophthalmology
Hossein Rabbani, Rahele Kafieh, Mahdi Kazemian Jahromi, Sahar Jorjandi, Alireza Mehri Dehnavi, Fedra Hajizadeh, Alireza Peyman
Optical Coherence Tomography (OCT) is one of the most informative methodologies in ophthalmology and provides cross sectional images from anterior and posterior segments of the eye. Corneal diseases can be diagnosed by these images and corneal thickness maps can also assist in the treatment and diagnosis. The need for automatic segmentation of cross sectional images is inevitable since manual segmentation is time consuming and imprecise. In this paper, segmentation methods such as Gaussian Mixture Model (GMM), Graph Cut, and Level Set are used for automatic segmentation of three clinically important corneal layer boundaries on OCT images...
2016: International Journal of Biomedical Imaging
Sahar Fallahi-Shahabad, Mohsen Mazidi, Alireza Tavasoli, Peyman Rezaie, Fatemeh Rohani, Simindokht Habibzadeh, Emadodin Darchini-Maragheh, Zohreh Sadat Sang Sefidi, Mohammad Safarian, Majid Ghayour Mobarhan, Mohammad Taghi Rajabi, Abdolreza Norouzy, Seyed Mohammad Reza Parizadeh, Saeid Akhlaghi, Shima Tavalaie, Fatemeh Firouzi, Mohsen Nematy
BACKGROUND AND AIM: Obesity is one of the greatest public health concerns worldwide. Weight loss surgeries have been increased in recent decades due to the world's epidemic of obesity. The aim of this prospective study is investigating metabolic factors of morbid obese patients following Roux-en-Y gastric bypass surgery. METHODS: This was a nonrandomized prospective cohort study conducted from 2010 to 2013 on 60 consecutive patients who had body mass index (BMI) of more than 40 kg/m(2) and met the surgical indication criteria of bariatric surgery...
May 2016: Indian Journal of Gastroenterology: Official Journal of the Indian Society of Gastroenterology
Attiyeh Vasaghi, Alireza Ashraf, Alireza Shirzadi, Peyman Petramfar
This report describes a patient with dysphonia for 16 years in combination with asymmetric and progressive decrease in sense and power of both upper and lower extremities for the past 3 years. Electrophysiological study revealed asymmetric conduction block and abnormal sensory action potential in 4 limbs. The vagus nerves palsy and abnormal electrodiagnosis of the limbs led us to diagnose the disease as Lewis and Sumner syndrome, also called multifocal acquired demyelinating sensory and motor neuropathy diagnosis, which improved by corticosteroid consumption to some extent...
May 12, 2016: American Journal of Physical Medicine & Rehabilitation
Alireza Khataee, Peyman Gholami, Behrouz Vahid, Sang Woo Joo
Natural pyrite (NP) was treated using oxygen and nitrogen non-thermal plasmas to form modified catalysts. Cleaning effect of the O2 plasma by chemical etching leads to removal of impurities from catalyst surface and sputtering effect of the N2 plasma results in formation of pyrite nanorods. The mentioned plasmas were applied separately or in the order of first O2 and then N2, respectively. The catalytic performance of the plasma-modified pyrites (PMPs) is better than the NP for treatment of Reactive Blue 69 (RB69) in heterogeneous sono-Fenton process (US/H2O2/PMP)...
September 2016: Ultrasonics Sonochemistry
Alireza Soltani, Peyman Khorsand, Clara Guo, Shiva Farashahi, Janet Liu
Decision making often requires simultaneously learning about and combining evidence from various sources of information. However, when making inferences from these sources, humans show systematic biases that are often attributed to heuristics or limitations in cognitive processes. Here we use a combination of experimental and modelling approaches to reveal neural substrates of probabilistic inference and corresponding biases. We find systematic deviations from normative accounts of inference when alternative options are not equally rewarding; subjects' choice behaviour is biased towards the more rewarding option, whereas their inferences about individual cues show the opposite bias...
2016: Nature Communications
Alireza Peyman, Alireza Nouralishahi, Farhad Hafezi, Sabine Kling, Mohamadreza Peyman
PURPOSE: To compare the stromal demarcation line depth in pulsed versus continuous corneal cross-linking (CXL) for keratoconus. METHODS: Seventy eyes underwent epithelium-off cross-linking, with 0.1% riboflavin applied during 10 minutes prior to ultraviolet irradiation at 30 mW/cm2. Thirty-six eyes received pulsed irradiation (1 second on, 1 second off) for 8 minutes and 34 eyes underwent continuous irradiation for 4 minutes. Total fluence was 7.2 J/cm2 for both groups...
March 2016: Journal of Refractive Surgery
Maryam Mosaffa-Jahromi, Ali-Mohammad Tamaddon, Suleiman Afsharypuor, Alireza Salehi, Seyed Hassan Seradj, Mehdi Pasalar, Peyman Jafari, Kamran Bagheri Lankarani
Depression is a prevalent disorder among patients suffering from irritable bowel syndrome. The current study was performed to evaluate the effect of a traditional Persian medicine product, anise oil, in removing the symptoms of mild to moderate depression in patients with irritable bowel syndrome. In a randomized double-blinded active and placebo controlled clinical trial, 120 participants with mild to moderate depression according to the Beck Depression Inventory-II total scores were categorized into 3 equal groups and received anise oil, Colpermin, and placebo...
February 11, 2016: Journal of Evidence-based Complementary & Alternative Medicine
Maryam Barzin, Farhad Hosseinpanah, Mohammad Ali Motamedi, Parvin Shapoori, Peyman Arian, Maryam Alsadat Daneshpour, Golale Asghari, Ahmad Teymoornejad, Ali Eslamifar, Davood Khalili, Behzad Jodeiri, Shahram Alamdari, Fereidoun Azizi, Alireza Khalaj
BACKGROUND: Obesity is a major health concern in the Middle East and worldwide. It is among the leading causes of morbidity, mortality, health care utilization, and costs. With bariatric surgery proving to be a more effective treatment option for overweight and obesity, the need for systematic assessment of different procedures and their outcomes becomes necessary. These procedures have not yet been described in detail in our region. OBJECTIVE: We aim to undertake a prospective study evaluating and comparing several surgical bariatric procedures in an Iranian population of morbid obese patients presenting to a specialized bariatric center...
2016: JMIR Research Protocols
Alireza Peyman, Ali Kamali, Maral Khushabi, Kobra Nasrollahi, Neda Kargar, Maryam Taghaodi, Hasan Razmjoo, Farhad Fazel, Asiyeh Salesi
BACKGROUND: Keratoconus is a bilateral non-inflammatory corneal disease. Collagen cross-linking (CXL) is a new treatment option for the disease that uses ultraviolet A light irradiation and riboflavin administration. The aim of this study is to evaluate the effect of CXL on corneal topographic and refractive values in patients with keratoconus younger than 18 years of age. MATERIALS AND METHODS: For the clinical trial study, 37 patients (64 eyes) younger than 18 years of age with progressive keratoconus were included...
2015: Advanced Biomedical Research
Afshin Borhani Haghighi, Safoora Kokabi, Samaneh Yousefi, Mehrdad Emami, Abdolhamid Shariat, Alireza Nikseresht, Nahid Ashjazadeh, Sadegh Izadi, Peyman Petramfar, Maryam Poursadegh, Abbas Rahimi Jaberi, Sajjad Emami, Hamid Agheli, Reza Nemati, Ehsan Yaghoubi, Kaveh Kashani, Majid Panahandeh, Seyed Moslem Heidari-Khormizi, Salvador Cruz-Flores, Randal Edgell
BACKGROUND: Hemodynamic depression, including bradycardia and hypotension, is among the most common complications of carotid angioplasty and stenting. METHODS AND MATERIAL: A prospective, cross-sectional study was conducted at Shiraz University of Medical Sciences in southern Iran from 2011 to 2013. Consecutive patients undergoing carotid angioplasty and stenting were included. Demographic data, atherosclerotic risk factors, preprocedural blood pressure, the site of stenosis, the degree of stenosis, and data regarding technical factors were recorded...
October 2015: Journal of Vascular and Interventional Neurology
Alireza Khataee, Peyman Gholami, Behrouz Vahid
The plasma-treated pyrite (PTP) nanostructures were prepared from natural pyrite (NP) utilizing argon plasma due to its sputtering and cleaning effects resulting in more active surface area. The NP and PTP were characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Brunauer-Emmett-Teller (BET) and scanning electron microscopy (SEM) methods. The performance of the PTP was greater than NP for treatment of Reactive Red 84 (RR84) by the heterogeneous sono-Fenton process. The optimum amounts of main operational parameters were obtained as PTP of 4 g/L, initial dye concentration of 10 mg/L, pH of 5, and ultrasonic power of 300 W after 120 min of reaction time...
March 2016: Ultrasonics Sonochemistry
Reza Bahador, Afshin Taheriazam, Alireza Mirghasemi, Ali Torkaman, Mohammadreza Shakeri, Emad Yahaghi, Peyman Karimi Goudarzi
Osteosarcoma is the most common type of bone cancer in children and adolescents. MicroRNAs (miRNAs) play important roles in the development, differentiation, and function of different cell types and in the pathogenesis of various human diseases. miRNAs are differentially expressed in normal and cancer cells. The investigation of miRNA expression between healthy subjects and patients with osteosarcoma is crucial for future clinical trials. In this study, the expression levels of miRNAs were detected by qRT-PCR...
March 2016: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
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