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https://www.readbyqxmd.com/read/28808647/the-relationship-between-the-time-of-endoscopy-and-morbidity-and-mortality-rates-in-patients-with-upper-gastrointestinal-bleeding
#1
Vahid Sebghatollahi, Khadijeh Ghomi, Babak Tamizifar, Mohammad Minakari, Mahsa Khodadoustan
BACKGROUND: This study was done to evaluate the relationship between the time of endoscopy in patients with upper gastrointestinal bleeding with morbidity and mortality rates of patients at the Al Zahra Hospital emergency room. MATERIALS AND METHODS: In a cohort study, 1152 patients at 2014 and 2015 have been hospitalized due to gastrointestinal bleeding in Al Zahra Hospital, were selected and demographic and clinical information and day and time of endoscopy and hospital mortality and fewer deaths than a month after discharge were studied, and prognosis was analyzed in terms of day and time of endoscopy...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28808643/polymorphism-rs16917496-at-the-mir-502-binding-site-of-the-lysine-methyltransferase-5a-set8-and-its-correlation-with-colorectal-cancer-in-iranians
#2
Meysam Mosallayi, Miganoosh Simonian, Sharifeh Khosravi, Ahmad Reza Salehi, Mahsa Khodadoostan, Vahid Sebghatollahi, Azar Baradaran, Rasoul Salehi
BACKGROUND: One of the gene expression regulatory mechanisms is mediated by small noncoding RNAs called microRNA (miRNA). They interact with a recognition sequence located mostly in 3'-untranslated regions (3'-UTRs) of mRNAs. Polymorphisms in miRNAs recognition sequences could affect gene expression which in turn may alter disease susceptibility. SET8, a member of the SET domain-containing methyltransferase, acts in a variety of biological processes such as genomic stability. Here, we report correlation of rs16917496 polymorphism, located in the recognition sequence of miR-502 within 3'-UTR of SET8, with colorectal cancer (CRC) in Iranians...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28808467/comparison-of-the-penetration-depth-of-conventional-and-nano-particle-calcium-hydroxide-into-dentinal-tubules
#3
Vahid Zand, Hadi Mokhtari, Aila Hasani, Golchin Jabbari
INTRODUCTION: The aim of this in vitro study was to evaluate and compare the penetration depth of conventional (CH) and nano-particle calcium hydroxide (NCH) into dentinal tubules. METHODS AND MATERIALS: Ninety human single-rooted teeth were instrumented by RaCe rotary system and after chemomechanical preparation were randomly divided in two equal groups (n=45). In the first group conventional CH and in the other NCH was used as intracanal medicament. After 2 weeks of incubation all roots were intentionally split at longitudinal axis and prepared for scanning electron microscope (SEM) observation...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28808364/the-effect-of-furosemide-on-the-level-of-neutrophil-gelatinase-associated-lipocalin-in-critically-hospitalized-patients-with-acute-kidney-injury
#4
Hadi Hamishehkar, Sarvin Sanaie, Vahid Fattahi, Mehran Mesgari, Ata Mahmoodpoor
BACKGROUND AND AIMS: Oliguric acute kidney injury (AKI), commonly attributed to a more severe degree of renal injury, is associated with poorer prognosis than nonoliguric form. The aim of this study was to determine the effect of furosemide therapy on kidney function and on the level of neutrophil gelatinase-associated lipocalin (NGAL) in critically hospitalized patients in the Intensive Care Unit (ICU). MATERIALS AND METHODS: In this randomized controlled trial, 106 ICU patients with AKI were assigned into furosemide and control groups...
July 2017: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/28807092/extraction-and-determination-of-trace-amounts-of-p-coumaric-acid-in-vinegar-carrot-juice-and-seed-extract-from-silybum-marianum-l-gaertn
#5
Rouhollah Khani, Zeinab Rostami, Ghodsieh Bagherzade, Vahid Khojeh
In this study, for the monitoring and quantification of p-coumaric acid (p-CA) in vinegar, carrot juice, and seed extract from the plant species Silybum marianum (L.) Gaertn, an efficient and low-cost analytical method has been applied. For this purpose, a dispersive liquid-liquid microextraction (DLLME) method, followed by UV-Vis spectrophotometric detection, was used. To form a cloudy solution, a binary mixture containing ethanol as a disperser solvent and chloroform as an extraction solvent was rapidly injected by syringe into a sample solution containing p-CA...
August 10, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28805849/topology-of-polymer-chains-under-nanoscale-confinement
#6
Vahid Satarifard, Maziar Heidari, Samaneh Mashaghi, Sander J Tans, Mohammad Reza Ejtehadi, Alireza Mashaghi
Spatial confinement limits the conformational space accessible to biomolecules but the implications for bimolecular topology are not yet known. Folded linear biopolymers can be seen as molecular circuits formed by intramolecular contacts. The pairwise arrangement of intra-chain contacts can be categorized as parallel, series or cross, and has been identified as a topological property. Using molecular dynamics simulations, we determine the contact order distributions and topological circuits of short semi-flexible linear and ring polymer chains with a persistence length of lp under a spherical confinement of radius Rc...
August 14, 2017: Nanoscale
https://www.readbyqxmd.com/read/28803807/effet-du-rev%C3%A3%C2%AAtement-esth%C3%A3-tique-sur-la-rugosit%C3%A3-de-surface-des-fils-orthodontiques
#7
Seyed Mohammad Mousavi, Milad Shamohammadi, Zahra Rastegaar, Masoumeh Skini, Vahid Rakhshan
No abstract text is available yet for this article.
August 10, 2017: International Orthodontics
https://www.readbyqxmd.com/read/28803804/effect-of-esthetic-coating-on-surface-roughness-of-orthodontic-archwires
#8
Seyed Mohammad Mousavi, Milad Shamohammadi, Zahra Rastegaar, Masoumeh Skini, Vahid Rakhshan
BACKGROUND AND AIM: Esthetic wires are commonly used in orthodontic treatments. Surface roughness is an important factor in the friction and bacterial adhesion in these wires. Surface roughness of esthetic wires has not been assessed, except in a few recent (mostly qualitative esthetics) studies. The aim of this study was to quantitatively compare the surface roughness of 4 coated esthetic wires with that of a conventional orthodontic wire. MATERIALS AND METHODS: In this in vitro trial, 25 coated and uncoated orthodontic archwires were studied, including: NiTi Memory wire (American Orthodontics, USA) as a control group; Orthocosmetic Elastinol (Ortho Organizers, USA); Perfect (Hubit, Korea); Imagination (Gestenco, Sweden); EverWhite (American Orthodontics, USA)...
August 10, 2017: International Orthodontics
https://www.readbyqxmd.com/read/28803514/investigation-sensitivity-analysis-and-multi-objective-optimization-of-effective-parameters-on-temperature-and-force-in-robotic-drilling-cortical-bone
#9
Vahid Tahmasbi, Majid Ghoreishi, Mojtaba Zolfaghari
The bone drilling process is very prominent in orthopedic surgeries and in the repair of bone fractures. It is also very common in dentistry and bone sampling operations. Due to the complexity of bone and the sensitivity of the process, bone drilling is one of the most important and sensitive processes in biomedical engineering. Orthopedic surgeries can be improved using robotic systems and mechatronic tools. The most crucial problem during drilling is an unwanted increase in process temperature (higher than 47 °C), which causes thermal osteonecrosis or cell death and local burning of the bone tissue...
August 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28801149/hypnosis-for-reduction-of-background-pain-and-pain-anxiety-in-men-with-burns-a-blinded-randomised-placebo-controlled-study
#10
Hossein Jafarizadeh, Mojgan Lotfi, Fardin Ajoudani, Arezou Kiani, Vahid Alinejad
INTRODUCTION: 'Background pain' and 'pain anxiety' are among the numerous problems of patients with burns. Non-pharmacological and pharmacological interventions have been used to reduce background pain and pain anxiety. This study compared the effectiveness of hypnosis and 'neutral hypnosis' (as a placebo in the control group) in decreasing the background burn pain and pain anxiety of adult male survivors with burns. DESIGN: This is a blinded, randomised, placebo-controlled study...
August 8, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28800003/evaluation-of-tomographic-image-quality-of-extended-and-conventional-parallel-hole-collimators-using-maximum-likelihood-expectation-maximization-algorithm-by-monte-carlo-simulations
#11
Vahid Moslemi, Mansour Ashoor
OBJECTIVE: One of the major problems associated with parallel hole collimators (PCs) is the trade-off between their resolution and sensitivity. To solve this problem, a novel PC - namely, extended parallel hole collimator (EPC) - was proposed, in which particular trapezoidal denticles were increased upon septa on the side of the detector. MATERIALS AND METHODS: In this study, an EPC was designed and its performance was compared with that of two PCs, PC35 and PC41, with a hole size of 1...
August 10, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28799006/multiple-sclerosis-and-environmental-risk-factors-a-case-control-study-in-iran
#12
Maryam Abbasi, Seyed Massood Nabavi, Seyed Mohammad Fereshtehnejad, Nikan Zerafat Jou, Iman Ansari, Vahid Shayegannejad, Seyed Ehsan Mohammadianinejad, Mahdi Farhoudi, Abbas Noorian, Nazanin Razazian, Mahmoud Abedini, Fardin Faraji
Studies have shown an increase in the incidence of MS in Iran. The aim of our study was to evaluate the relationship between environmental exposure and MS in Iran. This case-control study was conducted on 660 MS patients and 421 controls. Many environmental factors are compared between the two groups. Our findings demonstrated that prematurity ([OR = 4.99 (95% CI 1.34-18.68), P = 0.017]), history of measles and mumps ([OR = 1.60 (95% CI 1.05-2.45), P = 0.029; OR = 1.85 (95% CI 1.22-2.78), P = 0...
August 10, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28791421/erratum-to-autoantibodies-to-desmogleins-1-and-3-in-patients-with-lichen-planus
#13
Vahide Lajevardi, Zahra Halaji, Forugh Ghaedi, Nazi Saljoughi
No abstract text is available yet for this article.
August 8, 2017: Archives of Dermatological Research
https://www.readbyqxmd.com/read/28791058/stereoacuity-after-wavefront-guided-photorefractive-keratectomy-in-anisometropia
#14
Farid Karimian, Vahid Ownagh, Mohammad Aghazadeh Amiri, Seyed Mehdi Tabatabaee, Nooshin Dadbin
PURPOSE: To determine changes in stereoacuity in anisometropic myopic eyes after photorefractive keratectomy (PRK). METHODS: Myopic patients with at least 1 diopter (D) of anisometropia in sphere, astigmatism, or spherical equivalent who were referred to our hospital for excimer refractive surgery were enrolled as a prospective sequential interventional case series. All patients underwent wavefront-guided photorefractive keratectomy (WFG-PRK) using the Technolas Perfect Vision (217z) Excimer laser machine...
July 2017: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/28789874/genotyping-of-avian-infectious-bronchitis-viruses-in-iran-2015-2017-reveals-domination-of-is-1494-like-virus
#15
Amir Modiri, Arash GhalyanchiLangerodui, Masoud Hashemzadeh, Hossein Hosseini, Vahid Karimi, Ramak Yahyaraeyat, Hamideh Najafi
Avian infectious bronchitis virus (IBV) is causing major economic losses to the poultry industry. The analysis of the S1 gene has been used to determine IBV genotype. The aim of this study was genotyping of IBVs circulating among the Iranian broiler flocks in the period between 2015 to 2017. Trachea samples from 278 broiler flocks were collected from broiler farms in eight provinces of Iran. After Real-time RT-PCR, IBV-positive samples were further characterized based on S1 gene. The results of the Real-time RT-PCR showed that 52...
August 5, 2017: Virus Research
https://www.readbyqxmd.com/read/28782285/metformin-enhances-doxorubicin-sensitivity-via-inhibition-of-doxorubicin-efflux-in-p-gp-overexpressing-mcf-7-cells
#16
Vahid Shafiei-Irannejad, Nasser Samadi, Bahman Yousefi, Roya Salehi, Kobra Velaei, Nosratollah Zarghami
Resistance against chemotherapy is still a major problem in successful cancer treatment in the clinic. Therefore, identifying new compounds with lower side effects and higher efficacy is an important approach to overcome multidrug resistance (MDR). Here, we investigated the activity and possible mechanism of the antidiabetic drug, metformin, in human doxorubicin (DOX) resistant breast cancer (MCF-7/DOX) cells. The effect of metformin on the cytotoxicity of DOX was evaluated by MTT assay. The P-gp mRNA/protein expression levels following treatment with metformin was determined using real time polymerase chain reaction (RT-PCR) and western blot analysis, respectively...
August 6, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28781731/neuropsychological-functioning-in-obsessive-compulsive-washers-drug-naive-without-depressive-symptoms
#17
Ali Akbar Saremi, Seyed Vahid Shariat, Mohammad Ali Nazari, Behrooz Dolatshahi
INTRODUCTION: Obsessive-Compulsive Disorder (OCD) is a complex and heterogeneous neuropsychiatric syndrome. Contamination obsessions and washing/cleaning compulsions are the most frequent clinical OCD subtypes. The current study aimed at examining the neuropsychological impairments in drug-naive obsessive-compulsive (OC) washers without depressive symptoms and their association with the severity of symptoms. METHODS: In the current causal-comparative study, 35 patients with diagnostic and statistical mental disorders class (DSM)-IV diagnosed with washing-subtype OCD and 35 healthy subjects were selected by the convenience sampling method and evaluated by computerized neuropsychology battery and clinical tests as Stroop Color-Word Test (SCWT), Wisconsin Card Sorting Test (WCST), Go/No-Go Test, Digits Forward (DF), Digits Backward (DB), Yale-Brown Obsessive-Compulsive Scale (Y-BOCS), Beck Depression Inventory (BDI), Beck Anxiety Inventory (BAI), and General Health Questionnaire (GHQ)-28...
May 2017: Basic and Clinical Neuroscience
https://www.readbyqxmd.com/read/28781730/executive-functions-in-students-with-depression-anxiety-and-stress-symptoms
#18
Bita Ajilchi, Vahid Nejati
INTRODUCTION: This study aimed to investigate and compare the executive functions of students with depression, anxiety, and stress symptoms with those functions in healthy ones. METHODS: This study was a comparative and non-clinical analysis. The study population comprised all students of Shahid Beheshti University, Tehran, Iran. A total of 448 students were recruited using convenience sampling method. They were also screened using the Depression Anxiety Stress Scales (DASS) test comprising 21 items...
May 2017: Basic and Clinical Neuroscience
https://www.readbyqxmd.com/read/28780995/agreement-between-total-corneal-astigmatism-calculated-by-vector-summation-and-total-corneal-astigmatism-measured-by-ray-tracing-using-galilei-double-scheimpflug-analyzer
#19
Sepehr Feizi, Siamak Delfazayebaher, Vahid Ownagh, Fatemeh Sadeghpour
PURPOSE: To evaluate the agreement between total corneal astigmatism calculated by vector summation of anterior and posterior corneal astigmatism (TCAVec) and total corneal astigmatism measured by ray tracing (TCARay). METHODS: This study enrolled a total of 204 right eyes of 204 normal subjects. The eyes were measured using a Galilei double Scheimpflug analyzer. The measured parameters included simulated keratometric astigmatism using the keratometric index, anterior corneal astigmatism using the corneal refractive index, posterior corneal astigmatism, and TCARay...
August 3, 2017: Journal of Optometry
https://www.readbyqxmd.com/read/28780679/locoregional-therapies-for-hepatocellular-carcinoma-and-the-new-li-rads-treatment-response-algorithm
#20
Ania Kielar, Kathryn J Fowler, Sara Lewis, Vahid Yaghmai, Frank H Miller, Hooman Yarmohammadi, Charles Kim, Victoria Chernyak, Takeshi Yokoo, Jeffrey Meyer, Isabel Newton, Richard K Do
Radiologists play a central role in the assessment of patient response to locoregional therapies for hepatocellular carcinoma (HCC). The identification of viable tumor following treatment guides further management and potentially affects transplantation eligibility. Liver Imaging Reporting and Data Systems (LI-RADS) first introduced the concept of LR-treated in 2014, and a new treatment response algorithm is included in the 2017 update to assist radiologists in image interpretation of HCC after locoregional therapy...
August 5, 2017: Abdominal Radiology
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