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https://www.readbyqxmd.com/read/28523563/assessment-of-endothelial-cell-function-and-physiological-microcirculatory-reserve-by-video-microscopy-using-a-topical-acetylcholine-and-nitroglycerin-challenge
#1
Matthias Peter Hilty, Jacqueline Pichler, Bulent Ergin, Urs Hefti, Tobias Michael Merz, Can Ince, Marco Maggiorini
BACKGROUND: Assessment of the microcirculation is a promising target for the hemodynamic management of critically ill patients. However, just as the sole reliance on macrocirculatory parameters, single static parameters of the microcirculation may not represent a sufficient guide. Our hypothesis was that by serial topical application of acetylcholine (ACH) and nitroglycerin (NG), the sublingual microcirculation can be challenged to determine its endothelial cell-dependent and smooth muscle-dependent physiological reserve capacity...
December 2017: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/28519901/inhibition-of-soil-microbial-activity-by-nitrogen-based-energetic-materials
#2
Roman G Kuperman, Morgan L Minyard, Ronald T Checkai, Geoffrey I Sunahara, Sylvie Rocheleau, Sabine G Dodard, Louise Paquet, Jalal Hawari
We investigated individual toxicities of nitrogen-based energetic materials (EMs) 2,4-dinitrotoluene (2,4-DNT); 2-amino-4,6-dinitrotoluene (2-ADNT); 4-amino-2,6-dinitrotoluene (4-ADNT); and nitroglycerin (NG) on microbial activity in Sassafras sandy loam (SSL) soil, which has physicochemical characteristics that support "very high" qualitative relative bioavailability for organic chemicals. Batches of SSL soil for basal respiration (BR) and substrate-induced respiration (SIR) assays were separately amended with individual EMs or acetone carrier control...
May 18, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28515502/ismp-adverse-drug-reactions-pregabalin-induced-stuttering-nitroglycerine-induced-bradycardia-progressing-to-asystole-minocycline-induced-dress-leading-to-liver-transplantation-and-type-1-diabetes-increased-risk-of-vertebral-fractures-in-women-receiving-thiazide
#3
Michael A Mancano
The purpose of this feature is to heighten awareness of specific adverse drug reactions (ADRs), discuss methods of prevention, and promote reporting of ADRs to the US Food and Drug Administration's (FDA's) MedWatch program (800-FDA-1088). If you have reported an interesting, preventable ADR to MedWatch, please consider sharing the account with our readers. Write to Dr. Mancano at ISMP, 200 Lakeside Drive, Suite 200, Horsham, PA 19044 (phone: 215-707-4936; e-mail: mmancano@temple.edu). Your report will be published anonymously unless otherwise requested...
April 2017: Hospital Pharmacy
https://www.readbyqxmd.com/read/28514300/increasing-efficacy-and-reducing-side-effects-in-treatment-of-chronic-anal-fissures-a-study-of-topical-diazepam-therapy
#4
Minh Tuan H Hang, Betsy E Smith, Carson Keck, Ali Keshavarzian, Shahriar Sedghi
This is a single institution nonexperimental study intended to analyze the therapeutic efficacy of topical diazepam in treating symptoms of chronic anal fissures.Anal fissures are a common cause of anal pain. Conventional treatments include nonsteroidal anti-inflammatory drugs, topical creams, such as nitroglycerin and nifedipine, and surgery. However, these treatments are usually suboptimally efficacious or have deterring side effects.Patients at an outpatient community center with a diagnosis of a chronic anal fissure were prescribed either topical 2% (n = 19) or 4% (n = 18) diazepam cream between January 2013 and February 2015...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28512721/mid-term-risk-for-subclinical-atherosclerosis-and-chronic-myocarditis-in-children-with-kawasaki-disease-and-transient-coronary-abnormalities
#5
Mansingh Parihar, Surjit Singh, Pandiarajan Vignesh, Anju Gupta, Manojkumar Rohit
There is evidence for premature atherosclerosis and systemic arterial stiffening during follow-up of children with Kawasaki disease (KD) and coronary artery abnormalities (CAA). Moreover, patients with KD may also have subclinical myocardial involvement and inhomogeneous ventricular repolarization. The inhomogeneous ventricular repolarization manifests as increased QT dispersion on electrocardiography. There is a paucity of studies in endothelial dysfunction and QT dispersion in children with KD and transient CAA...
May 17, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28511057/mapping-smokeless-powder-residue-on-pvc-pipe-bomb-fragments-using-total-vaporization-solid-phase-microextraction
#6
Dana Bors, John Goodpaster
Quantitating post-blast explosive residue is not a common practice in crime labs as it is typically not legally relevant. There is value in quantitation, however, if the distribution of residues on Improvised Explosive Devices (IEDs) can help guide future sample collection and/or method development. Total vaporization solid phase microextraction gas chromatography mass spectrometry (TV-SPME/GC/MS) was used to quantify residues of double-base smokeless powder (DBSP), which includes nitroglycerin (NG), diphenylamine (DPA), and ethyl centralite (EC) on post-blast PVC pipe bomb fragments...
April 14, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28509693/microcirculatory-effects-of-botulinum-toxin-a-in-the-rat-acute-and-chronic-vasodilation
#7
Roberto Giorgio Aru, Somjade Jay Songcharoen, Samantha R Seals, Peter B Arnold, Robert L Hester
BACKGROUND: Botulinum toxin-A (BTX) has numerous cosmetic and therapeutic applications. Our previous studies have found that BTX augments pedicled flap survival through both vasodilatory effects and attenuation of the inflammatory response to ischemia in the rat. This study examines the effect of chronic BTX on microcirculatory vascular tone and its response to acute topical vasodilators in muscle flaps. METHODS: The spinotrapezius muscle of Sprague-Dawley rats underwent a single 2-week pretreatment of 0...
May 15, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28501384/acute-heart-failure-in-the-emergency-department-the-safe-simeu-epidemiological-study
#8
Andrea Fabbri, Giulio Marchesini, Giorgio Carbone, Roberto Cosentini, Annamaria Ferrari, Mauro Chiesa, Alessio Bertini, Federico Rea
BACKGROUND: Patients with acute heart failure (AHF) have high rates of attendance to emergency departments (EDs), with significant health care costs. OBJECTIVES: We aimed to describe the clinical characteristics of patients attending Italian EDs for AHF and their diagnostic and therapeutic work-up. METHODS: We carried out a retrospective analysis on 2683 cases observed in six Italian EDs for AHF (January 2011 to June 2012). RESULTS: The median age of patients was 84 years (interquartile range 12), with females accounting for 55...
May 10, 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28494895/the-efficacy-of-labetalol-versus-nitroglycerin-for-induction-of-controlled-hypotension-during-sinus-endoscopic-surgery-a-prospective-double-blind-and-randomized-study
#9
Nagat S El-Shmaa, Hoda Alsaid Ahmed Ezz, Ahmed Younes
OBJECTIVE: To assess the efficacy of labetalol versus nitroglycerin for induction of controlled hypotension during sinus endoscopic surgery. DESIGN: A prospective, double-blind and randomized study. SETTING: Carried out in operating room in university hospital. PATIENTS: 60 patients of both sexes, American Society of Anesthesiologists (ASA) physical status I and II, age range from 20 to 60years; scheduled for elective sinus endoscopic surgery under general anesthesia (GA)...
June 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28489612/correlation-between-ambulatory-blood-pressure-variability-and-vasodilator-function-in-middle-aged-normotensive-individuals
#10
Minlie Liang, Shanghua Xu, Shunxiang Luo, Fei Miao, Yingfeng Liu, Wenliang Zhong
OBJECTIVE: The aim of this study was to investigate the association between ambulatory blood pressure variability and vasodilator function in a cohort of normotensive middle-aged individuals. PARTICIPANTS AND METHODS: This was a cross-sectional study of 285 randomly selected 40-59-year-old normotensive participants who underwent 24-h ambulatory blood pressure monitoring and brachial artery ultrasound assessment. Systolic and diastolic blood pressure variability (BPV) of 24-h, daytime, and night-time were calculated using the coefficients of variation (CV) and the average real variability (ARV) index...
May 3, 2017: Blood Pressure Monitoring
https://www.readbyqxmd.com/read/28488307/baicalin-alleviates-nitroglycerin-induced-migraine-in-rats-via-the-trigeminovascular-system
#11
Yu-Yao Sun, Wen-Jun Zhang, Cui-Lan Dong, Xiao-Fan Zhang, Jun Ji, Xue Wang, Ling Wang, Wan-Li Hu, Wen-Juan Du, Cheng-Long Cui, Chun-Feng Zhang, Fei Li, Chong-Zhi Wang, Chun-Su Yuan
Migraine is a common neurological disorder with a serious impact on quality of life. The aim of this study was to explore the effect of baicalin on nitroglycerin-induced migraine rats. We carried out a behavioral research within 2 h post-nitroglycerin injection, and blood samples were drawn for measurements of nitric oxide (NO), calcitonin gene-related peptide, and endothelin (ET) levels. Immunohistochemistry was adopted to detect the activation of C-fos immunoreactive neurons in periaqueductal gray. The number, area size, and integrated optical density of C-fos positive cells were measured using Image-Pro Plus...
May 10, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28488179/novel-contrast-injection-protocol-for-high-resolution-abdominal-ct-angiography-vascular-visualization-improvement-with-vasodilator
#12
Minori Hoshika, Kotaro Yasui, Takefumi Niguma, Toru Kojima, Norimi Nishiyama, Daisuke Suzuki, Izumi Togami
PURPOSE: To evaluate the usefulness of a novel contrast-injection protocol for high-resolution abdominal computed tomography angiography (CTA) using nitroglycerin (NTG). METHODS: Abdominal CTA was performed in 80 patients using two 64-detector-row CT scanners. Forty patients were examined after administration of sublingual NTG (NTG group), while 40 were examined without NTG administration (non-NTG group). Arterial phase images were acquired with maximum intensity projection and volume rendering...
May 9, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28488014/effect-of-nitrooxy-compounds-with-different-molecular-structures-on-the-rumen-methanogenesis-metabolic-profile-and-methanogenic-community
#13
Wei Jin, Zhenxiang Meng, Jing Wang, Yanfen Cheng, Weiyun Zhu
Rumen in vitro fermentation was used to evaluate the capacity of nitrooxy compounds to mitigate rumen methane production. The following three nitrooxy compounds, each with different molecular structures, were evaluated: 2,2-dimethyl-3-(nitrooxy) propanoic (DNP), N-[2-(Nitrooxy)ethyl]-3-pyridinecarboxamide (NPD), and nitroglycerin (NG). All three compounds substantially decreased the total gas production, methane production, and the acetate:propionate ratio, while increasing hydrogen production. The growth of methanogens was specifically inhibited by all three compounds, without affecting the abundance of bacteria, anaerobic fungi, or protozoa...
May 10, 2017: Current Microbiology
https://www.readbyqxmd.com/read/28485846/oxytocin-and-migraine-headache
#14
REVIEW
Alexander Tzabazis, Shashi Kori, Jordan Mechanic, James Miller, Conrado Pascual, Neil Manering, Dean Carson, Michael Klukinov, Egilius Spierings, Daniel Jacobs, Jason Cuellar, William H Frey, Leah Hanson, Martin Angst, David C Yeomans
This article reviews material presented at the 2016 Scottsdale Headache Symposium. This presentation provided scientific results and rationale for the use of intranasal oxytocin for the treatment of migraine headache. Results from preclinical experiments are reviewed, including in vitro experiments demonstrating that trigeminal ganglia neurons possess oxytocin receptors and are inhibited by oxytocin. Furthermore, most of these same neurons contain CGRP, the release of which is inhibited by oxytocin. Results are also presented which demonstrate that nasal oxytocin inhibits responses of trigeminal nucleus caudalis neurons to noxious stimulation using either noxious facial shock or nitroglycerin infusion...
May 2017: Headache
https://www.readbyqxmd.com/read/28479899/effects-of-vasodilator-and-esmolol-induced-hemodynamic-stability-on-early-post-operative-cognitive-dysfunction-in-elderly-patients-a-randomized-trial
#15
Sheng-Hui Sun, Lin Yang, De-Feng Sun, Yue Wu, Jun Han, Ruo-Chuan Liu, Li-Jie Wang
OBJECTIVE: To investigate the effect of continuous intravenous injection of nicardipine and/or nitroglycerin with or without esmolol on the occurrence of early post-operative cognitive dysfunction (POCD) in elderly patients. METHODS: Elderly patients (n=340) who underwent radiofrequency ablation for atrial fibrillation were randomized into five groups: A, nicardipine; B nicardipine+esmolol; C, (nitroglycerin) group; D nitroglycerin+esmolol; E (control) groups. The hemodynamic parameters were recorded, and Mini Mental State Examination was used to assess cognitive function...
December 2016: African Health Sciences
https://www.readbyqxmd.com/read/28474291/depleted-nitric-oxide-and-prostaglandin-e2-levels-are-correlated-with-endothelial-dysfunction-in-%C3%AE-thalassemia-hbe-patients
#16
Sudarat Satitthummanid, Noppacharn Uaprasert, Smonporn Boonyaratavej Songmuang, Ponlapat Rojnuckarin, Piyaratana Tosukhowong, Pranee Sutcharitchan, Suphot Srimahachota
Mechanisms of vascular disorders in β-thalassemia/HbE patients remain poorly understood. In the present study, we aimed to determine the presence of endothelial dysfunction and its association with altered vascular mediators in this population. Forty-three β-thalassemia/HbE patients without clinically documented vascular symptoms and 43 age-sex-matched healthy controls were enrolled. Endothelial function was assessed using flow-mediated dilatation (FMD) before and after administration of nitroglycerine (NTG)...
May 4, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28473083/acr-appropriateness-criteria-%C3%A2-radiologic-management-of-mesenteric-ischemia
#17
Nicholas Fidelman, Ali F AbuRahma, Brooks D Cash, Baljendra S Kapoor, M-Grace Knuttinen, Jeet Minocha, Paul J Rochon, Colette M Shaw, Charles E Ray, Jonathan M Lorenz
Mesenteric vascular insufficiency is a serious medical condition that may lead to bowel infarction, morbidity, and mortality that may approach 50%. Recommended therapy for acute mesenteric ischemia includes aspiration embolectomy, transcatheter thrombolysis, and angioplasty with or without stenting for the treatment of underlying arterial stenosis. Nonocclusive mesenteric ischemia may respond to transarterial infusion of vasodilators such as nitroglycerin, papaverine, glucagon, and prostaglandin E1. Recommended therapy for chronic mesenteric ischemia includes angioplasty with or without stent placement and, if an endovascular approach is not possible, surgical bypass or endarterectomy...
May 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/28468975/physiology-of-angina-and-its-alleviation-with-nitroglycerine-insights-from-invasive-catheter-laboratory-measurements-during-exercise
#18
Kaleab N Asrress, Rupert Williams, Timothy P Lockie, Muhammed Z Khawaja, Kalpa De Silva, Matthew Lumley, Tiffany Patterson, Satpal S Arri, Sana Ihsan, Howard Ellis, Antoine Guilcher, Brian R Clapp, Philip J Chowienczyk, Sven Plein, Divaka Perera, Michael Marber, Simon R Redwood
Background -The mechanisms governing exercise-induced angina and its alleviation by the most commonly used anti-anginal drug, nitroglycerine (GTN), are incompletely understood. The purpose of this study was to develop a method with which the effects of anti-anginal drugs could be evaluated invasively during physiological exercise to gain further understanding as to the clinical impact of angina and GTN. Methods -40 Patients (mean 65.2±7.6 years) with exertional angina and coronary artery disease underwent cardiac catheterisation via radial access and performed incremental exercise using a supine cycle ergometer...
May 3, 2017: Circulation
https://www.readbyqxmd.com/read/28456113/the-enhancement-mechanism-of-wine-processed-radix-scutellaria-on-ntg-induced-migraine-rats
#19
Cheng-Long Cui, Xin He, Cui-Lan Dong, Zi-Jing Song, Jun Ji, Xue Wang, Ling Wang, Jiao-Ying Wang, Wen-Juan Du, Chong-Zhi Wang, Chun-Su Yuan, Chang-Run Guo, Chun-Feng Zhang
To elucidate the increasing dissolution and enhancement mechanism of wine-processed Radix Scutellaria (RS) by fractal theory in nitroglycerin (NTG)-induced migraine rats. We prepared three RS from the process with 10% (S1), 15% (S2), 20% (S3) (v/m) rice wine. Mercury intrusion porosimetry and scanning electron microscope were employed to explore the internal structure of RS and the components dissolution of RS was analyzed by HPLC. Rats were randomly allocated into following groups and orally given different solutions for 10days: normal group (NOR, normal saline), model group (MOD, normal saline), Tianshu capsule group (TSC, 0...
April 26, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28453571/effect-of-shenmai-injection-on-preventing-the-development-of-nitroglycerin-induced-tolerance-in-rats
#20
Qian Zhou, Yan Sun, Wangxiao Tan, Xiao Liu, Yuchen Qian, Xianghui Ma, Ting Wang, Xiaoying Wang, Xiumei Gao
Long-term nitroglycerin (NTG) therapy causes tolerance to its effects attributing to increased oxidative stress and endothelial dysfunction. Shenmai injection (SMI), which is clinically used to treat cardiovascular diseases, consists of two herbal medicines, Ginseng Rubra and Ophiopogonjaponicas, and is reported to have antioxidant effects. The present study was designed to investigate the potential preventive effects of Shenmai injection on development of nitroglycerin-induced tolerance. The present study involves both in vivo and in vitro experiments to investigate nitroglycerin-induced tolerance...
2017: PloS One
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