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https://www.readbyqxmd.com/read/29351436/therapeutic-attenuation-of-the-epithelial-sodium-channel-with-a-splunc1-derived-peptide-in-airway-diseases
#1
James F Collawn, Rafal Bartoszewski, Ahmad Lazrak, Sadis Matalon
The airway surface liquid (ASL) coats the lining of the airways and allows for efficient cilial movement and therefore effective mucociliary transport. Cell surface channels regulate the hydration status of the ASL and the two critical channels in the process are the cystic fibrosis transmembrane conductance regulator (CFTR) and the amiloride-sensitive epithelial sodium channel (ENaC). In cystic fibrosis (CF) and chronic obstructive pulmonary disease (COPD) there is loss of CFTR function or compromised CFTR function in chronic bronchitis, respectively...
January 4, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29346225/validating-lung-models-using-the-asl-5000-breathing-simulator
#2
Amanda Dexter, Neil McNinch, Destiny Kaznoch, Teresa A Volsko
OBJECTIVE: This study sought to validate pediatric models with normal and altered pulmonary mechanics. METHODS: PubMed and CINAHL databases were searched for studies directly measuring pulmonary mechanics of healthy infants and children, infants with severe bronchopulmonary dysplasia and neuromuscular disease. The ASL 5000 was used to construct models using tidal volume (VT), inspiratory time (TI), respiratory rate, resistance, compliance, and esophageal pressure gleaned from literature...
January 17, 2018: Simulation in Healthcare: Journal of the Society for Simulation in Healthcare
https://www.readbyqxmd.com/read/29341002/preclinical-arterial-spin-labeling-measurement-of-cerebral-blood-flow
#3
Eric R Muir
Magnetic resonance imaging has been utilized as a quantitative and noninvasive method to image blood flow. Arterial spin labeling (ASL) is an MRI technique that images blood flow using arterial blood water as an endogenous tracer. Herein we describe the use of ASL to measure cerebral blood flow completely noninvasively in rodents, including methods, analysis, and important considerations when utilizing this technique.
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29340964/geriatric-nutritional-risk-index-as-a-simple-tool-for-assessment-of-malnutrition-among-geriatrics-in-northwest-of-iran-comparison-with-mini-nutritional-assessment
#4
Maryam Saghafi-Asl, Elnaz Vaghef-Mehrabany, Nahid Karamzad, Lida Daeiefarshbaf, Parinaz Kalejahi, Mohammad Asghari-Jafarabadi
BACKGROUND: Older people are more likely to develop nutritional problems and timely diagnosis of malnutrition is crucial to prevent hazardous consequences following poor nutrition. AIMS: To evaluate the efficacy of Geriatric Nutritional Risk Index (GNRI) to assess nutritional status among non-hospitalized elderly, compared to mini nutritional assessment (MNA) among Iranian seniors. METHODS: One hundred and sixty-four subjects, aged ≥ 65 years old were recruited to our cross-sectional study from various districts of Tabriz (Tabriz, Iran)...
January 16, 2018: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/29339282/probing-the-interaction-of-two-chemotherapeutic-drugs-of-oxali-palladium-and-5-fluorouracil-simultaneously-with-milk-carrier-protein-of-%C3%AE-lactoglobulin
#5
Amineh Leilabadi-Asl, Adeleh Divsalar, Ali Akbar Saboury, Kazem Parivar
β-Lactoglobulin (βLG) is a basic element of globular carrier protein, which is the major protein in the whey of ruminant milk and is of main interest in the dairy industry. In the present study, the simultaneous effects of both of the important anticancer drugs of 5-fluorouracil (5-FU) and oxali-palladium, on the structure of βLG were investigated using different spectroscopic methods of fluorescence and circular dichroism (CD) in combination with a molecular docking at two temperatures of 25 and 37 °C...
January 12, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29339105/effects-of-thymol-on-amyloid-%C3%AE-induced-impairments-in-hippocampal-synaptic-plasticity-in-rats-fed-a-high-fat-diet
#6
Masoumeh Asadbegi, Alireza Komaki, Iraj Salehi, Parichehreh Yaghmaei, Azadeh Ebrahim-Habibi, Siamak Shahidi, Abdolrahman Sarihi, Sara Soleimani Asl, Zoleikha Golipoor
Obesity and a high-fat diet (HFD) are known to increase the incidence of Alzheimer's disease (AD). Oxidative stress, a major risk factor for AD, is increased with HFD consumption. Thymol (Thy) has antioxidant properties. Therefore, in the present study, we examined the protective and therapeutic effects of Thy on amyloid-β (Aβ)-induced impairments in the hippocampal synaptic plasticity of HFD-fed rats. In this study, 72 adult male Wistar rats were randomly assigned to 9 groups (n = 8 rats/group): Group 1 (control; standard diet); Group 2: Control + phosphate-buffered saline (PBS) + Oil (Thy vehicle); Group 3 (HFD + PBS); Group 4: (HFD + Aβ); Group 5: Control + PBS + Thy; Group 6: (HFD + Aβ + Oil); Group 7: Control + Aβ + Thy; Group 8: HFD + PBS + Thy; Group 9: (HFD + Aβ + Thy)...
January 12, 2018: Brain Research Bulletin
https://www.readbyqxmd.com/read/29333914/hybrid-pet-mri-imaging-in-healthy-unsedated-newborn-infants-with-quantitative-rcbf-measurements-using-15o-water-pet
#7
Julie B Andersen, Ulrich Lindberg, Oline V Olesen, Didier Benoit, Claes N Ladefoged, Henrik Bw Larsson, Liselotte Højgaard, Gorm Greisen, Ian Law
In this study, a new hybrid PET/MRI method for quantitative regional cerebral blood flow (rCBF) measurements in healthy newborn infants was assessed and the low values of rCBF in white matter previously obtained by arterial spin labeling (ASL) were tested. Four healthy full-term newborn subjects were scanned in a PET/MRI scanner during natural sleep after median intravenous injection of 14 MBq 15O-water. Regional CBF was quantified using a one-tissue-compartment model employing an image-derived input function (IDIF) from the left ventricle...
January 1, 2018: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29331612/arterial-spin-labeling-cerebral-perfusion-magnetic-resonance-imaging-in-migraine-aura-an-observational-study
#8
Marc E Wolf, Shuhei Okazaki, Philipp Eisele, Christina Rossmanith, Johannes Gregori, Martin Griebe, Matthias Günther, Achim Gass, Michael G Hennerici, Kristina Szabo, Rolf Kern
BACKGROUND: Changes in cerebral perfusion during migraine with aura (MA) have been assessed mainly using dynamic susceptibility contrast (DSC) magnetic resonance perfusion imaging. A contrast agent-free method to assess these changes would be desirable. We assessed changes in cerebral perfusion during MA using arterial spin labeling (ASL) perfusion magnetic resonance imaging. METHODS: We investigated 4 patients with a standardized protocol including ASL perfusion imaging during MA (n = 2) or early headache phase (n = 2) and asymptomatic follow-up...
January 10, 2018: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29331226/a-low-complexity-minimum-variance-beamformer-for-ultrasound-imaging-using-dominant-mode-rejection
#9
Babak Mohammadzadeh Asl, Ali Mohades Deylami
In recent years, high resolution adaptive minimum variance-based beamformers have been successfully applied to medical ultrasound imaging to improve its resolution and contrast, simultaneously. However, these improvements come at the cost of much more computational complexity in comparison to the non-adaptive delay-and-sum beamformer. The computational overhead mainly results from the L×L covariance matrix inversion needed for computation of the adaptive weights, the complexity of which is cubic with the subarray size, O(L3)...
January 4, 2018: Ultrasonics
https://www.readbyqxmd.com/read/29326055/a-retrospective-biochemical-molecular-and-neurocognitive-review-of-saudi-patients-with-argininosuccinic-aciduria
#10
Ruqaiah AlTassan, Dalal Bubshait, Faiqa Imtiaz, Zuhair Rahbeeni
A retrospective review was compiled of 54 patients with argininosuccinic aciduria who were either identified through the Saudi National Newborn Screening Program or diagnosed clinically from January 2000 to December 2015. The duration of follow-up is from 2 to 19 years. The majority of patients (65%) originated from the central province of Saudi Arabia. The mean patient age at review was 10 years (2-19 years), 92% received an early diagnosis (<28 days of age) and most were symptomatic at the time of the diagnosis (n = 34)...
January 8, 2018: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/29326004/health-care-associated-infections-in-iran-a-national-update-for-the-year-2015
#11
Babak Eshrati, Hossein Masoumi Asl, Shirin Afhami, Zahra Pezeshki, Arash Seifi
BACKGROUND: A national surveillance system for health care-associated infections (HAIs) in Iran is relatively new, and an update on incidence and mortality rates can aid clinicians and stakeholders in development of new guidelines and imperative modifications to be made. METHODS: Data were extracted from the national HAIs surveillance software for more than 7 million hospitalizations during 2015. Data regarding age, gender, deaths, ward of admission, and microbiologic findings were collected and analyzed...
January 9, 2018: American Journal of Infection Control
https://www.readbyqxmd.com/read/29325400/eliminating-healthcare-associated-infections-in-iran-a-qualitative-study-to-explore-stakeholders-views
#12
Atefeh Esfandiari, Hedayat Salari, Arash Rashidian, Hossein Masoumi Asl, Abbas Rahimi Foroushani, Ali Akbari Sari
BACKGROUND: Although preventable, healthcare-associated infections (HAIs) continue to pose huge health and economic burdens on countries worldwide. Some studies have indicated the numerous causes of HAIs, but only a tiny literature exists on the multifaceted measures that can be used to address the problem. This paper presents stakeholders' opinions on measures for controlling HAIs in Iran. METHODS: We used the qualitative research method in studying the phenomenon...
April 15, 2017: International Journal of Health Policy and Management
https://www.readbyqxmd.com/read/29324475/bilateral-cochlear-implants-maximizing-expected-outcomes
#13
Kate E Willis, Nathan J Blum, Stephanie A Waryasz, Marilyn Augustyn
Sonia is a 4 1/12-year-old girl with Waardenburg syndrome and bilateral sensorineural hearing loss who had bilateral cochlear implants at 2 7/12 years of age. She is referred to Developmental-Behavioral Pediatrics by her speech/language pathologist because of concerns that her language skills are not progressing as expected after the cochlear implant. At the time of the implant, she communicated using approximately 20 signs and 1 spoken word (mama). At the time of the evaluation (18 months after the implant) she had approximately 70 spoken words (English and Spanish) and innumerable signs that she used to communicate...
January 10, 2018: Journal of Developmental and Behavioral Pediatrics: JDBP
https://www.readbyqxmd.com/read/29318125/prevalence-of-intestinal-parasites-in-food-handlers-of-bandar-abbas-southern-iran
#14
Mehrgan Heydari-Hengami, Yaghoob Hamedi, Majid Najafi-Asl, Khojasteh Sharifi-Sarasiabi
Background: Food handlers play a significant role in the dissemination and transmission of enteropathogenic microorganisms, including intestinal parasites. The aim of this study was to determine the prevalence of intestinal parasites in food handlers of Bandar Abbas, southern Iran. Methods: In this cross-sectional study, 800 stool samples were randomly collected in a period of 6 months from Jun to Nov 2015. The diagnosis was made on direct wet mount, formalin-ether concentration, Ziehl-Neelsen, and Trichrome stained slides...
January 2018: Iranian Journal of Public Health
https://www.readbyqxmd.com/read/29315770/diffusion-sensitivity-of-3d-grase-in-arterial-spin-labeling-perfusion
#15
Xiang He, Kenneth Wengler, Mark E Schweitzer
PURPOSE: To evaluate the role of true diffusion and flow-related pseudodiffusion in cerebral blood flow (CBF) quantification using arterial spin labeling (ASL) with single-shot or segmented 3D gradient and spin echo (GRASE) readouts. THEORY: The extended phase graph (EPG) algorithm, originally designed to model the effects of T1 /T2 relaxation and true diffusion in MRI acquisitions utilizing multiple refocusing RF pulses, was augmented (aEPG). This augmentation accounted for flow-related pseudodiffusion attenuation of intravascular MRI signal in the k-space domain during 3D-GRASE acquisition, which leads to blur along the partition direction in the image domain...
January 7, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29314595/fabrication-and-characterization-of-polymer-ceramic-nanocomposites-containing-drug-loaded-modified-halloysite-nanotubes
#16
Maedeh Ghaderi-Ghahfarrokhi, Vahid Haddadi-Asl, Seyed Shahrooz Zargarian
Modified halloysite nanotubes (HNT-NH2 and HNT-COOH) were synthesized by a coupling reaction with 3-amino- propyltriethoxysilane (APTES) and maleic anhydride from hydroxyl groups of neat halloysite nanotubes (HNTs). Successful attachment of functional groups onto HNTs was evaluated by FTIR and TGA. XRD was used to study the crystalline structure of scaffolds and the formation of intercalated structure as a result of improved dispersion and decreased agglomeration of modified nanoparticles. Neat HNT, HNT-NH2 and HNT-COOH were subsequently introduced into Polycaprolactone/Pluronic P123 (PCL/P123) electrospun substrate...
January 3, 2018: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29313361/arterial-spin-labeling-a-technical-overview
#17
Inger Havsteen, Janus Damm Nybing, Hanne Christensen, Anders F Christensen
Arterial spin labeling (ASL) is a non-invasive magnetic resonance imaging perfusion method based on changes in net-magnetization of blood water. The absence of contrast use and ionizing radiation, renders ASL valuable in hyper-acute settings as a monitoring tool for repeated dynamical measurements during and after intervention, and for patients with known co-morbidities. This text provides a short methodological introduction to ASL and contrasts it with traditional contrast-enhanced perfusion imaging. The review focused on sequence usefulness in the clinical setting of acute cerebral ischemia investigation...
January 1, 2018: Acta Radiologica
https://www.readbyqxmd.com/read/29310028/design-synthesis-biological-assessment-and-molecular-docking-studies-of-new-2-aminoimidazole-quinoxaline-hybrids-as-potential-anticancer-agents
#18
Zahra Ghanbarimasir, Ahmadreza Bekhradnia, Katayoun Morteza-Semnani, Alireza Rafiei, Nima Razzaghi-Asl, Mostafa Kardan
In a search for novel antiproliferative agents, a series of quinoxaline derivatives containing 2-aminoimidazole (8a-8x) were designed and synthesized. The structures of synthesized compounds were confirmed by IR, 1H NMR, 13C NMR, Mass Spectroscopy and analyzed using HSQC, COSY, ROESY, HMBC techniques. The anticancer activity of all derivatives were evaluated for colon cancer and breast cancer cell lines by the MTT assay and acridine orange/ethidium bromide double staining method. The anti-cancer effect in human colon cancer (HCT-116) and breast cancer (MCF-7) cell lines exhibited that compounds 8a, 8s, 8t, 8w, 8x appeared as potent antiproliferative agents and especially inhibited the human colon cancer cell proliferation with percentage of inhibition by over 50%...
December 29, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29309860/effects-of-total-saponins-from-trillium-tschonoskii-rhizome-on-grey-and-white-matter-injury-evaluated-by-quantitative-multiparametric-mri-in-a-rat-model-of-ischemic-stroke
#19
Manzhong Li, Junyao Ouyang, Yi Zhang, Brian Chi Yan Cheng, Yu Zhan, Le Yang, Haiyan Zou, Hui Zhao
ETHNOPHARMACOLOGICAL RELEVANCE: Trillium tschonoskii rhizome (TTR), a medicinal herb, has been traditionally used to treat traumatic brain injury and headache in China. Although the potential neuroprotective efficacy of TTR has gained increasing interest, the pharmacological mechanism remains unclear. Steroid saponins are the main bioactive components of the herb. AIM OF THE STUDY: To investigate the protective and repair-promoting effects of the total saponins from TTR (TSTT) on grey and white matter damages in a rat model of middle cerebral artery occlusion (MCAO) using magnetic resonance imaging (MRI) assay...
January 5, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29308629/identification-of-novel-ptprq-and-myo1a-mutations-in-an-iranian-pedigree-with-autosomal-recessive-hearing-loss
#20
Farah Talebi, Farideh Ghanbari Mardasi, Javad Mohammadi Asl, Saeed Tizno, Marziye Najafvand Zadeh
Autosomal recessive non-syndromic hearing loss (ARNSHL) is defined as a genetically heterogeneous disorder. The aim of the present study was to screen for pathogenic variants in an Iranian pedigree with ARNSHL. Next-generation targeted sequencing of 127 deafness genes in the proband detected two novel variants, a homozygous missense variant in PTPRQ (c.2599 T>C, p.Ser867Pro and a heterozygous missense variant in MYO1A (c.2804 T>C, p.Ile935Thr), both of which were absent in unaffected sibs and two hundred unaffected controls...
April 2018: Cell Journal
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