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https://www.readbyqxmd.com/read/29776659/response-of-rats-to-dose-rates-of-ionizing-radiation-evaluated-by-dielectric-properties-of-bone-marrow
#1
REVIEW
Azhar M Elwan, Aida A Salama, Abdelbaset M Sayed, Ahmad M Ghoneim, Aziza A Assaied, Fatma A Ibrahim, Hany A Shousha, Mohamed M M Elnasharty
The response of adult Wistar albino female rats toward two dose rates of gamma radiation delivered as acute dose of 7 Gy is investigated using classical methodologies as chemical, hematological and histological parameters in comparison with newly introduced dielectric parameters. Two groups of rats were exposed to γ ray with dose rates 533.35 mGy/min and 325.89 mGy/min. Then the irradiated groups were followed up for two weeks after irradiation. In case of higher dose rate, high percentage of animals was lost and there were substantial alterations in the dielectric parameters in addition to massive damage in liver and bone marrow cells...
May 10, 2018: Progress in Biophysics and Molecular Biology
https://www.readbyqxmd.com/read/29769112/association-between-%C3%AE-blocker-use-and-mortality-in-critically-ill-patients-a-nested-cohort-study
#2
Shmeylan A Al Harbi, Khalid A Al Sulaiman, Hani Tamim, Hasan M Al-Dorzi, Musharaf Sadat, Yaseen Arabi
BACKGROUND: β-blockers have several indications in critically ill patients and are commonly used. The aim of this study is to examine the relationship between the use of β-blockers in critically ill patients and mortality. METHODS: This was a nested cohort study in which all medical-surgical ICU patients (N = 523) enrolled in a randomized clinical trial of intensive insulin therapy (ISRCTN07413772) were grouped according to β-blocker use during ICU stay. To account for the indication of β-blockers, we constructed a propensity score using selected clinically-relevant and statistically-significant variables related to β-blocker exposure and outcome...
May 16, 2018: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/29767547/prehospital-fibrinolysis-followed-by-urgent-percutaneous-coronary-intervention-after-st-elevation-myocardial-infarction
#3
Umair Khalid, Hani Jneid, Ali Emin Denktas
No abstract text is available yet for this article.
May 16, 2018: Future Cardiology
https://www.readbyqxmd.com/read/29766776/bk-polyomavirus-immune-response-with-stress-on-bk-specific-t-cells
#4
Hany M El Hennawy
Polyomavirus-associated nephropathy is a pertinent cause of poor renal allograft survival. Absence of defensive immunity toward BK polyomavirus may favor the occurrence of BK polyomavirus-active infection and influence the progression to polyomavirus-associated nephropathy. Humoral immune responses may offer incomplete protection. In this review, available data on both humoral and cellular immunity were examined, with a concentration on BK polyomavirus-specific T cells; in addition, their roles in BK polyomavirus cellular immune response and immunotherapy were discussed...
May 16, 2018: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/29766296/characterization-of-in-vivo-metabolites-in-rat-urine-following-an-oral-dose-of-masitinib-by-liquid-chromatography-tandem-mass-spectrometry
#5
Adnan A Kadi, Sawsan M Amer, Hany W Darwish, Mohamed W Attwa
Masitinib (MST) is an orally administered drug that targets mast cells and macrophages, important cells for immunity, by inhibiting a limited number of tyrosine kinases. It is currently registered in Europe and USA for the treatment of mast cell tumors in dogs. AB Science announced that the European Medicines Agency has accepted a conditional marketing authorization application for MST to treat amyotrophic lateral sclerosis. In our work, we focused on studying in vivo metabolism of MST in Sprague-Dawley rats...
May 15, 2018: Chemistry Central Journal
https://www.readbyqxmd.com/read/29766225/potential-common-pathogenic-pathways-for-the-left-ventricular-noncompaction-cardiomyopathy-lvnc
#6
Ying Liu, Hanying Chen, Weinian Shou
Ventricular trabeculation and compaction are two essential morphogenetic events for generating a functionally competent ventricular wall. A significant reduction in trabeculation is usually associated with hypoplastic wall and ventricular compact zone deficiencies, which commonly leads to embryonic heart failure and early embryonic lethality. In contrast, the arrest of ventricular wall compaction (noncompaction) is believed to be causative to the left ventricular noncompaction (LVNC), a genetically heterogeneous disorder and the third most common cardiomyopathy among pediatric patients...
May 15, 2018: Pediatric Cardiology
https://www.readbyqxmd.com/read/29765949/a-20-year-retrospective-review-of-retinoblastoma-at-two-tertiary-academic-hospitals-in-johannesburg-south-africa
#7
Saadiah Goolam, Hemant Kana, Nicky Welsh, Linda Wainwright, Janet Poole, Ismail Mayet
Aim: This paper presents a 20-year review of retinoblastoma in Johannesburg, South Africa, aiming to better characterize the disease in this sub-Saharan setting. Methods: The study represents a retrospective case series of retinoblastoma patients presenting to Charlotte Maxeke Johannesburg Academic Hospital and Chris Hani Baragwanath Academic Hospital between January 1, 1992, and December 31, 2011. Results: The total number of cases identified was 282, with 245 meeting the study inclusion criteria...
April 2018: Ocular Oncology and Pathology
https://www.readbyqxmd.com/read/29760576/trends-of-gallbladder-cancer-in-jordan-over-2-decades-where-are-we
#8
Abdel Rahman Al Manasra, Mohammed Bani Hani, Haitham Qandeel, Samer Al Asmar, Mohammad Alqudah, Nabil Al-Zoubi, Satish Nadig, Shadi Hamouri, Khaled Obeidat, Nada Al-Muqaimi
Background and Study Aims: The prevalence of gallbladder cancer (GBC) varies between different parts of the world. This study is a review of literature and an update of a previously published study conducted in our university and aims to reassess the incidence of GBC over the past 2 decades. Patients and Methods: We conducted a retrospective study between 2002 and 2016. Data regarding demographics, clinical presentation, risk factors, histopathology, investigations, and treatments were obtained...
2018: Clinical Medicine Insights. Case Reports
https://www.readbyqxmd.com/read/29759560/cardiotoxic-effects-of-chemotherapy-a-review-of-both-cytotoxic-and-molecular-targeted-oncology-therapies-and-their-effect-on-the-cardiovascular-system
#9
REVIEW
Hani M Babiker, Ali McBride, Michael Newton, Leigh M Boehmer, Adrienne Goeller Drucker, Mollie Gowan, Manouchkathe Cassagnol, Todd D Camenisch, Faiz Anwer, James M Hollands
Cardiotoxic effects of chemotherapy and targeted drugs are ubiquitous and challenging in the field of oncology therapeutics. The broad spectrum of toxicities ranging from ischemic, hypertensive, cardiomyopathic, and arrhythmic complications can present as a significant challenge for clinicians treating cancer patients. If early diagnosis and intervention of cardiotoxic complications is missed, this can lead to delay or abrogation of planned treatment, which can potentially culminate to significant morbidity due to not only the cardiotoxic complications but also the progression of cancer...
June 2018: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/29759512/drug-eluting-stents-versus-bare-metal-stents-in-saphenous-vein-grafts-a-double-blind-randomised-trial
#10
Emmanouil S Brilakis, Robert Edson, Deepak L Bhatt, Steven Goldman, David R Holmes, Sunil V Rao, Kendrick Shunk, Bavana V Rangan, Kreton Mavromatis, Kodangudi Ramanathan, Anthony A Bavry, Santiago Garcia, Faisal Latif, Ehrin Armstrong, Hani Jneid, Todd A Conner, Todd Wagner, Judit Karacsonyi, Lauren Uyeda, Beverly Ventura, Aaron Alsleben, Ying Lu, Mei-Chiung Shih, Subhash Banerjee
BACKGROUND: Few studies have examined the efficacy of drug-eluting stents (DES) for reducing aortocoronary saphenous vein bypass graft (SVG) failure compared with bare-metal stents (BMS) in patients undergoing stenting of de-novo SVG lesions. We assessed the risks and benefits of the use of DES versus BMS in de-novo SVG lesions. METHODS: Patients were recruited to our double-blind, randomised controlled trial from 25 US Department of Veterans Affairs centres. Eligible participants were aged at least 18 years and had at least one significant de-novo SVG lesion (50-99% stenosis of a 2·25-4·5 mm diameter SVG) requiring percutaneous coronary intervention with intent to use embolic protection devices...
May 11, 2018: Lancet
https://www.readbyqxmd.com/read/29753615/targeting-the-proinflammatory-cytokines-oxidative-stress-apoptosis-and-tgf-%C3%AE-1-stat-3-signaling-by-irbesartan-to-ameliorate-doxorubicin-induced-hepatotoxicity
#11
Ahmed M Kabel, Abdulaziz A Alzahrani, Nawaf M Bawazir, Rayan O Khawtani, Hany H Arab
Doxorubicin (DOX) is an anthracycline antibiotic that is used frequently for treatment of various types of malignancies. Hepatotoxicity is one of the serious complications of DOX. The aim of this study was to explore the effect of different doses of irbesartan on doxorubicin-induced hepatotoxicity in mice. Sixty male BALB/c mice were divided into six equal groups as follows: Control group; DOX group; Irbesartan (Small dose) group; Irbesartan (Large dose) group; DOX + Irbesartan (Small dose) group and DOX + Irbesartan (Large dose) group...
May 9, 2018: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/29753551/development-of-quality-indicators-to-monitor-radiotherapy-care-for-men-with-prostate-cancer-a-modified-delphi-method
#12
Ellie Tsiamis, Jeremy Millar, Siddhartha Baxi, Martin Borg, Paolo De Ieso, Hany Elsaleh, Farshad Foroudi, Braden Higgs, Tanya Holt, Jarad Martin, Kim Moretti, David Pryor, Marketa Skala, Sue Evans
BACKGROUND AND PURPOSE: Quality indicators (QIs) have been developed for many aspects of prostate cancer care, but are under-developed with regard to radiotherapy treatment. We aimed to develop a valid, relevant and feasible set of core QIs to measure quality of radiotherapy care in men with prostate cancer. MATERIALS AND METHODS: We used a RAND-modified Delphi process to select QIs that were regarded as both important and feasible measures of quality radiotherapy care...
May 9, 2018: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/29753098/anti-arthritic-activities-of-ethanol-extracts-of-circaea-mollis-siebold-zucc-whole-plant-in-rodents
#13
Yanhong Yu, Qing Zhang, Jiajia Li, Yeli Guan, Jiangeng Huang, Zhiping Wang, Zhen Zhang, Wenrui Zhang, Jing Guo, Jinghua Li, Jiachun Chen, Qun Zhou
ETHNOPHARMACOLOGICAL RELEVANCE: Circaea mollis Siebold & Zucc., a genus of Circaea that follows Onagraceae, has been used for centuries as a folk herb in traditional Chinese medicine (TCM) and Hani Ethnopharmacy for the treatment of joint swelling and pain in rheumatoid arthritis. AIM OF THE STUDY: This study was designed to confirm anti-arthritic effects and its underlying mechanism of ethanol extracts of Circaea mollis Siebold & Zucc. (EEC), which may contribute to provide the pharmacological basis in the treatment of rheumatoid disease...
May 9, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29750229/left-ventricular-twist-before-and-after-haemodialysis-an-analysis-using-speckle-tracking-echocardiography
#14
Anthony Yip, Saraladevi Naicker, Ferande Peters, Elena Libhaber, Nirvathi Maharaj, Mduduzi Mashabane, Mohammed Rafique Essop
BACKGROUND: The most commonly used parameter of cardiac function in the chronic kidney disease (CKD) patient is ejection fraction (EF), using transthoracic echocardiography (TTE). EF is a highly load-dependent measurement, which varies considerably in CKD patients undergoing haemodialysis. The aim of this pilot study was to evaluate a novel measure of myocardial function, left ventricular twist, which is defined as the 'wringing action of the heart', using speckletracking echocardiography in CKD patients before and after haemodialysis...
April 20, 2018: Cardiovascular Journal of Africa
https://www.readbyqxmd.com/read/29748100/impact-of-magnetic-resonance-imaging-on-gross-tumor-volume-delineation-in-non-spine-bony-metastasis-treated-with-stereotactic-body-radiation-therapy
#15
Srinivas Raman, Lee Chin, Darby Erler, Eshetu G Atenafu, Patrick Cheung, William Chu, Hans Chung, Andrew Loblaw, Ian Poon, Joel Rubenstein, Hany Soliman, Arjun Sahgal, Chia-Lin Tseng
PURPOSE: This study investigates the inter-observer variability of contouring non-spine bone metastases using the planning CT alone vs. the addition of MRI T1 and T2 imaging sequences. METHODS AND MATERIALS: 10 cases of non-spine bone metastases treated with SBRT at our institution were selected. The gross tumor volume (GTV) for each case was delineated by six SBRT radiation oncologists (RO) and one diagnostic radiologist (DR) on the treatment planning CT. After a minimum of three months, each case was re-contoured on the CT fused with a MRI T1 sequence followed by a MRI T2 sequence...
March 17, 2018: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29747759/limonin-alleviates-macro-and-micro-vascular-complications-of-metabolic-syndrome-in-rats-a-comparative-study-with-azelnidipine
#16
Noura A Hassan, Hany M El Bassossy, Ahmed Fahmy, Mona F Mahmoud
BACKGROUND: Hypertension is a serious component of metabolic syndrome (MetS). HYPOTHESIS: This research investigates the potential protective effect of limonin against MetS-associated hypertension in comparison with azelnidipine, a common calcium channel blocker. STUDY DESIGN: MetS was induced in rats by 10% fructose in water and 3% salt in diet over a 16-week period. Limonin (50 mg/kg) and azelnidipine (5 mg/kg) were administered daily in the last four weeks METHODS: Non-invasive blood pressure (BP) was recorded in conscious animals...
April 1, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29747600/vegf-121-plasma-level-as-biomarker-for-response-to-anti-angiogenetic-therapy-in-recurrent-glioblastoma
#17
Maurizio Martini, Ivana de Pascalis, Quintino Giorgio D'Alessandris, Vincenzo Fiorentino, Francesco Pierconti, Hany El-Sayed Marei, Lucia Ricci-Vitiani, Roberto Pallini, Luigi Maria Larocca
BACKGROUND: Vascular endothelial growth factor (VEGF) isoforms, particularly the diffusible VEGF-121, could play a major role in the response of recurrent glioblastoma (GB) to anti-angiogenetic treatment with bevacizumab. We hypothesized that circulating VEGF-121 may reduce the amount of bevacizumab available to target the heavier isoforms of VEGF, which are the most clinically relevant. METHODS: We assessed the plasma level of VEGF-121 in a brain xenograft model, in human healthy controls, and in patients suffering from recurrent GB before and after bevacizumab treatment...
May 10, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29745647/ultralight-microcellular-polymer-graphene-nanoplatelet-foams-with-enhanced-dielectric-performance
#18
Mahdi Hamidinejad, Biao Zhao, Raymond K M Chu, Nima Moghimian, Hani E Naguib, Tobin Filleter, Chul B Park
Dielectric polymer nanocomposites with high dielectric constant (ε'), and low dielectric loss (tan δ) are extremely desirable in the electronics industry. Percolative polymer-graphene nanoplatelet (GnP) composites have shown great promise as dielectric materials for high-performance capacitors. Herein an industrially-viable technique for manufacturing a new class of ultralight polymer composite foams using commercial GnPs with excellent dielectric performance is presented. Using this method, the high-density polyethylene (HDPE)-GnPs composites with a microcellular structure were fabricated by melt mixing...
May 10, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29744625/robot-assisted-stereotactic-brain-biopsy-systematic-review-and-bibliometric-analysis
#19
REVIEW
Hani J Marcus, Vejay N Vakharia, Sebastien Ourselin, John Duncan, Martin Tisdall, Kristian Aquilina
INTRODUCTION: Stereotactic brain biopsy represents one of the earliest applications of surgical robotics. The aim of the present systematic review and bibliometric analysis was to evaluate the literature supporting robot-assisted brain biopsy and the extent to which the scientific community has accepted the technique. METHODS: The Cochrane and PubMed databases were searched over a 30-year period between 1st of January 1988 and 31st of December 2017. Titles and abstracts were screened to identify publications that met the following criteria: (1) featured patients with brain pathology, (2) undergoing stereotactic brain biopsy, (3) reporting robot-assisted surgery, and (4) outcome data were provided...
May 10, 2018: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/29743679/control-of-cardiac-jelly-dynamics-by-notch1-and-nrg1-defines-the-building-plan-for-trabeculation
#20
Gonzalo Del Monte-Nieto, Mirana Ramialison, Arne A S Adam, Bingruo Wu, Alla Aharonov, Gabriele D'Uva, Lauren M Bourke, Mara E Pitulescu, Hanying Chen, José Luis de la Pompa, Weinian Shou, Ralf H Adams, Sarah K Harten, Eldad Tzahor, Bin Zhou, Richard P Harvey
In vertebrate hearts, the ventricular trabecular myocardium develops as a sponge-like network of cardiomyocytes that is critical for contraction and conduction, ventricular septation, papillary muscle formation and wall thickening through the process of compaction 1 . Defective trabeculation leads to embryonic lethality2-4 or non-compaction cardiomyopathy (NCC) 5 . There are divergent views on when and how trabeculation is initiated in different species. In zebrafish, trabecular cardiomyocytes extrude from compact myocardium 6 , whereas in chicks, chamber wall thickening occurs before overt trabeculation 7 ...
May 9, 2018: Nature
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