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https://www.readbyqxmd.com/read/29792676/dramatic-increase-in-polymer-glass-transition-temperature-under-extreme-nanoconfinement-in-weakly-interacting-nanoparticle-films
#1
Haonan Wang, Jyo Lyn Hor, Yue Zhang, Tianyi Liu, Daeyeon Lee, Zahra Fakhraai
Properties of polymers in polymer nanocomposites and nanopores have been shown to deviate from their respective bulk properties due to chain confinement as well as polymer-particle interfacial interactions. However, separating the confinement effects from the interfacial effects under extreme nanoconfinement is experimentally challenging. Capillary Rise Infiltration (CaRI) enables polymer infiltration into nanoparticle (NP) packings, thereby confining polymers within extremely small pores and dramatically increasing the interfacial area, providing a unique system to systematically distinguish the role of each effect on polymer properties...
May 24, 2018: ACS Nano
https://www.readbyqxmd.com/read/29792261/structure-based-analysis-of-cysz-mediated-cellular-uptake-of-sulfate
#2
Zahra Assur Sanghai, Qun Liu, Oliver B Clarke, Meagan Belcher-Dufrisne, Pattama Wiriyasermkul, M Hunter Giese, Edgar Leal-Pinto, Brian Kloss, Shantelle Tabuso, James Love, Marco Punta, Surajit Banerjee, Kanagalaghatta R Rajashankar, Burkhard Rost, Diomedes Logothetis, Matthias Quick, Wayne A Hendrickson, Filippo Mancia
Sulfur, most abundantly found in the environment as sulfate (SO4 2- ), is an essential element in metabolites required by all living cells, including amino acids, co-factors and vitamins. However, current understanding of the cellular delivery of SO4 2- at the molecular level is limited. CysZ has been described as a SO4 2- permease, but its sequence family is without known structural precedent. Based on crystallographic structure information, SO4 2- binding and flux experiments, we provide insight into the molecular mechanism of CysZ-mediated translocation of SO4 2- across membranes...
May 24, 2018: ELife
https://www.readbyqxmd.com/read/29791836/trpv4-mediates-hypotonic-inhibition-of-central-osmosensory-neurons-via-taurine-gliotransmission
#3
Sorana Ciura, Masha Prager-Khoutorsky, Zahra S Thirouin, Joshua C Wyrosdic, James E Olson, Wolfgang Liedtke, Charles W Bourque
The maintenance of hydromineral homeostasis requires bidirectional detection of changes in extracellular fluid osmolality by primary osmosensory neurons (ONs) in the organum vasculosum laminae terminalis (OVLT). Hypertonicity excites ONs in part through the mechanical activation of a variant transient receptor potential vanilloid-1 channel (dn-Trpv1). However, the mechanism by which local hypotonicity inhibits ONs in the OVLT remains unknown. Here, we show that hypotonicity can reduce the basal activity of dn-Trpv1 channels and hyperpolarize acutely isolated ONs...
May 22, 2018: Cell Reports
https://www.readbyqxmd.com/read/29790308/impact-of-low-level-radiation-on-concentrations-of-some-trace-elements-in-radiation-workers
#4
Nima Rostampour, Tinoosh Almasi, Masoumeh Rostampour, Hamid Reza Sadeghi, Ehsan Khodamoradi, Reyhaneh Razi, Zahra Derakhsh
Introduction: Small variations in trace element levels may cause important physiological changes in the human body. This study aims to evaluate five important trace elements in radiation workers. Method: In this study, 44 radiation workers and an equal number of non-radiation workers were selected as the case and control group, respectively. The concentrations of iron, magnesium, zinc, copper, and selenium in the serum of the participants were measured using an Atomic Absorption Spectrometry (AAS)...
May 2018: Journal of Experimental Therapeutics & Oncology
https://www.readbyqxmd.com/read/29788896/association-between-delayed-graft-function-dgf-biomarkers-and-long-term-outcomes-after-living-donor-kidney-transplantation
#5
Zahra Sahraei, Mona Mehdizadeh, Jamshid Salamzadeh, Mohsen Nafar, Azadeh Eshraghi
BACKGROUND AND OBJECTIVES: The Association between preoperative Urine Neutrophil Gelatinase-associated Lipocalin (uNGAL) and interlukin-18 (uIL-18) with poor 1-year allograft function has been shown in deceased-donor kidney transplant recipients previously, and also these markers could predict 3-month allograft function. However, it is unknown whether there is any association between these postoperative biomarkers with important recipient outcomes beyond this time in live-donor transplants...
May 21, 2018: Reviews on Recent Clinical Trials
https://www.readbyqxmd.com/read/29787392/aortic-dissection-true-or-false
#6
Zahra M Malik, Christopher Lau, Nikolaos J Skubas
No abstract text is available yet for this article.
February 27, 2018: A&A practice
https://www.readbyqxmd.com/read/29786767/oral-supplementation-of-lanthanum-zirconate-nanoparticles-moderately-affected-behavior-but-drastically-disturbed-leukocyte-count-serum-cholesterol-levels-and-antioxidant-parameters-from-vital-organs-of-albino-mice-in-a-gender-specific-manner
#7
Muhammad Nazar Aftab, Irum Naz Akram, Tafheem Khosa, Syeda Qandeel Zahra, Irum Bashir, Muhammad Naeem Ashiq, Furhan Iqbal
Lanthanum Zirconate nanoparticles (NPs) are used in blades of gas turbine engines to thermally insulate them and to protect them against hot and corrosive gas streams. However, the information regarding their biocompatibility is limited. The present study was aimed to report the effect of Lanthanum Zirconate NPs on selected aspects of behavior, serum biochemistry, complete blood count and antioxidant parameters from vital organs of albino mice in a gender specific manner. Albino mice, seven weeks old, were orally treated with 75 mg/ml solvent/Kg body weight of Lanthanum Zirconate nanoparticles for consecutive 22 days...
May 21, 2018: Metabolic Brain Disease
https://www.readbyqxmd.com/read/29785540/use-of-magnetic-resonance-imaging-in-rectal-cancer-patients-society-of-abdominal-radiology-sar-rectal-cancer-disease-focused-panel-dfp-recommendations-2017
#8
Marc J Gollub, Supreeta Arya, Regina Gh Beets-Tan, Gregory dePrisco, Mithat Gonen, Kartik Jhaveri, Zahra Kassam, Harmeet Kaur, David Kim, Andrea Knezevic, Elena Korngold, Chandana Lall, Neeraj Lalwani, D Blair Macdonald, Courtney Moreno, Stephanie Nougaret, Perry Pickhardt, Shannon Sheedy, Mukesh Harisinghani
PURPOSE: To propose guidelines based on an expert-panel-derived unified approach to the technical performance, interpretation, and reporting of MRI for baseline and post-treatment staging of rectal carcinoma. METHODS: A consensus-based questionnaire adopted with permission and modified from the European Society of Gastrointestinal and Abdominal Radiologists was sent to a 17-member expert panel from the Rectal Cancer Disease-Focused Panel of the Society of Abdominal Radiology containing 268 question parts...
May 21, 2018: Abdominal Radiology
https://www.readbyqxmd.com/read/29785133/are-quantitative-histopathologic-criteria-capable-of-differentiating-psoriasis-from-chronic-dermatitis
#9
Hamid Reza Ghasemi Basir, Pedram Alirezaei, Zahra Hamian, Elham Khanlarzadeh
Background: There are overlapping features in histopathologic characteristics of psoriasis and chronic dermatitis, which sometimes make the correct diagnosis difficult. Objective: The aim of this study was to compare the histopathologic diagnostic features of psoriasis with chronic dermatitis quantitatively. Patients and methods: In this study, 30 patients with psoriasis and 30 patients with chronic dermatitis were included. Diagnosis of psoriasis or chronic dermatitis was based on clinicopathologic correlation...
2018: Clinical, Cosmetic and Investigational Dermatology
https://www.readbyqxmd.com/read/29784221/do-psychological-characteristics-of-mothers-predict-parenting-stress-a-cross-sectional-study-among-mothers-of-children-with-different-disabilities
#10
Badroddin Najmi, Zahra Heidari, Awat Feizi, Silva Hovsepian, Farzaneh Momeni, Seied Mohammad Masood Azhar
BACKGROUND/OBJECTIVE: We aimed at assessing the parenting stress levels among mothers of children with different disabilities and its association with various mothers' psychological characteristics. METHODS: In this cross-sectional study, 302 mothers of 6-12years old children suffering from sensory motor mental, chronic physical and psychological disabilities were enrolled. Parenting stress, coping stratyles, marital satisfaction and psychological problems of mothers were assessed using validated questionnaires...
June 2018: Archives of Psychiatric Nursing
https://www.readbyqxmd.com/read/29782548/dyslipidemia-among-rural-and-urban-hiv-patients-in-south-east-malawi
#11
Alemayehu Amberbir, Victor Singano, Alfred Matengeni, Zahra Ismail, Gift Kawalazira, Adrienne K Chan, Sumeet D Sodhi, Joep J van Oosterhout
BACKGROUND: While dyslipidemia importantly contributes to increased cardiovascular disease risk among patients on antiretroviral therapy (ART), data on lipid patterns among African adults on ART are limited. We describe the prevalence of lipid abnormalities and associated factors in two HIV clinics in Malawi. METHODS: We conducted a cross-sectional study in 2014 and enrolled adult patients at a rural and an urban HIV clinic in Zomba district, Malawi. We recorded patient characteristics, CVD risk factors and anthropometric measurements, using the WHO STEPS validated instrument...
2018: PloS One
https://www.readbyqxmd.com/read/29782184/the-growth-of-preantral-follicles-and-the-impact-of-different-supplementations-and-circumstances-a-review-study-with-focus-on-bovine-and-human-preantral-follicles
#12
Zahra Rajabi, Zunair Khokhar, Hossein Yazdekhasti
One of the most important concerns cancer survivors face is fertility. Current treatment modalities often result in damage to the reproductive system. Different options have been proposed to preserve the fertility of affected women, and many attempts have been made to improve their chance of childbearing after therapy. Cryopreservation of ovarian tissue and follicles before the onset of cancer treatment and then either transplantation of ovarian tissue or culture of ovarian tissue and individual follicles in vitro is a commonly cited approach...
May 21, 2018: Cellular Reprogramming
https://www.readbyqxmd.com/read/29781090/informal-caregivers-in-hospitals-opportunities-and-threats
#13
Mohammadreza Amiresmaili, Zahra Emrani
OBJECTIVE: High hospital costs are a challenge that health system face. Additionally, studies identified manpower deficiency as a problem in health system. Hospital is a place where patients with different physical and mental conditions come to. Their families and friends' companionship can facilitate this situation for them. This study illustrates the roles of informal caregivers in hospital. METHOD: This is a phenomenological qualitative study. Data were gathered through semistructured interviews...
May 20, 2018: International Journal of Health Planning and Management
https://www.readbyqxmd.com/read/29780213/a-new-type-of-taylor-series-expansion
#14
Mohammad Masjed-Jamei, Zahra Moalemi, Iván Area, Juan J Nieto
We present a variant of the classical integration by parts to introduce a new type of Taylor series expansion and to present some closed forms for integrals involving Jacobi and Laguerre polynomials, which cannot be directly obtained by usual symbolic computation programs, i.e., only some very specific values can be computed by the mentioned programs. An error analysis is given in the sequel for the introduced expansion.
2018: Journal of Inequalities and Applications
https://www.readbyqxmd.com/read/29777790/effect-of-intratesticular-hematoma-on-testis-microstructure-spermatogenesis-and-testosterone-production-defining-a-cut-off-point-for-significant-intratesticular-hematoma
#15
Alireza Aminsharifi, Alireza Monsef, Ali Noorafshan, Saied Karbalay-Doust, Zahra Jafarinezhad, Omid Koohi, Afshin Molaei
OBJECTIVES: To evaluate the effect of different degrees of intratesticular hematoma (ITH), a major consequence of blunt testis trauma, on testis microstructure and function. We determined a cut-off point for significant vs. nonsignificant ITH. METHODS: Seventy male rats were divided into 7 equal groups. The control group (G) remained intact. Sham groups consisted of rats given an intratesticular injection of normal saline in both testicles with volumes equivalent to 40% of testis volume (G-II), 30% (G-III) and 10% (G-IV)...
May 16, 2018: Urology
https://www.readbyqxmd.com/read/29775901/tricine-co-ligand-improved-the-efficacy-of-99m-tc-hynic-ser-3-j18-peptide-for-targeting-and-imaging-of-non-small-cell-lung-cancer
#16
Zahra Shaghaghi, Seyed Mohammad Abedi, Seyed Jalal Hosseinimehr
The early diagnosis of non-small cell lung cancer (NSCLC) is important for increasing survival rate and improving quality life of patients. The aim of this study was to investigate 99m  Tc-(tricine)-HYNIC-(Ser)3 -J18 for targeting and imaging of NSCLC in A-549 xenografted nude mice. The (Ser)3 -J18 peptide was conjugated with HYNIC and labeled with 99m  Tc using tricine as a co-ligand. The radiolabeled peptide was evaluated for its radiochemical purity, stability, receptor binding and internalization in vitro...
May 15, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29775856/a-simple-ultrasensitive-electrochemical-sensor-for-simultaneous-determination-of-gallic-acid-and-uric-acid-in-human-urine-and-fruit-juices-based-on-zirconia-choline-chloride-gold-nanoparticles-modified-carbon-paste-electrode
#17
Seyed Alireza Shahamirifard, Mehrorang Ghaedi, Zahra Razmi, Shaaker Hajati
The determination of gallic acid (GA) and uric acid (UA) is essential due to their biological properties. Numerous methods have been reported for the analysis of GA and UA in various real samples. However, the development of a simple, rapid and practical sensor still remains a great challenge. Here, a carbon paste electrode (CPE) was modified by nanocomposite containing zirconia nanoparticles (ZrO2 NPs), Choline chloride (ChCl) and gold nanoparticles (AuNPs) to construct ZrO2 -ChCl-AuNPs/CPE as electrochemical sensor for the simultaneous electro-oxidation of GA and UA...
May 8, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29775630/the-basolateral-amygdala-dopaminergic-system-contributes-to-the-improving-effect-of-nicotine-on-stress-induced-memory-impairment-in-rats
#18
Elnaz Keshavarzian, Zahra Ghasemzadeh, Ameneh Rezayof
Stress seems to be an important risk factor in the beginning and continuing stages of cigarette tobacco smoking in humans. Considering that both of nicotine administration and stress exposure affect cognitive functions including memory formation, the aim of the present study was 1) to evaluate the effect of subcutaneous (s.c.) administration of nicotine on memory formation under stress and 2) to assess the possible role of the basolateral amygdala (BLA) dopamine D1 and D2 receptors in the effect of nicotine on stress-induced memory retrieval impairment...
May 15, 2018: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/29774633/a-simple-and-cost-efficient-adherent-culture-platform-for-human-gastric-primary-cells-as-an-in-vitro-model-for-helicobacter-pylori-infection
#19
Samaneh Saberi, Behshad Pournasr, Zahra Farzaneh, Maryam Esmaeili, Mahmoud Eshagh Hosseini, Hossein Baharvand, Marjan Mohammadi
BACKGROUND: Most two- dimensional in vitro models for studying host- H. pylori interactions rely on tumor-derived cell lines, which harbor malignant alterations. The recent development of human gastric organoids has overcome this limitation and provides a highly sophisticated, yet costly, short-term model for H. pylori infection, with restricted use in low-budget centers. METHOD: Tissue specimens from upper, middle, and lower stomachs of H. pylori-negative volunteers were collectively dispersed and cultured on mouse embryonic fibroblast (MEF) or collagen-coated plates...
May 17, 2018: Helicobacter
https://www.readbyqxmd.com/read/29772301/cytotoxic-diterpene-quinones-from-salvia-tebesana-bunge
#20
Samira Eghbaliferiz, Seyed Ahmad Emami, Zahra Tayarani-Najaran, Mehrdad Iranshahi, Abolfazl Shakeri, Judit Hohmann, Javad Asili
A phytochemical investigation of the root extracts of Salvia tebesana Bunge led to the isolation of two new diterpenoids, tebesinone A (1) and tebesinone B (2), along with two known compounds, aegyptinone A (3) and aegyptinone B (4). The structures were established by spectroscopic analysis including 1D and 2D NMR and HRESIMS. The cytotoxic activities of the crude extracts and isolated compounds were evaluated against MCF-7, B16F10, PC-3 and C26 human cancer cell lines, in which compounds 2 and 3 showed significant cytotoxic activities (IC50 2...
May 14, 2018: Fitoterapia
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