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https://www.readbyqxmd.com/read/28224703/potentially-inappropriate-medications-in-chinese-older-adults-the-beers-criteria-compared-with-the-screening-tool-of-older-persons-prescriptions-criteria
#1
Hong Li, Shiyun Pu, Qinhui Liu, Xin Huang, Jiangying Kuang, Lei Chen, Jing Shen, Shihai Cheng, Tong Wu, Rui Li, Yanping Li, Li Mo, Wei Jiang, Yi Song, Jinhan He
AIM: The present study aimed to assess the prevalence of potentially inappropriate medications (PIM) use in West China Hospital residents aged ≥65 years, using two sets of criteria - the Beers and Screening Tool of Older Persons' Prescriptions (STOPP) criteria - and to compare the Beers and STOPP criteria, and to determine the better criteria for assessing PIM of older adults in China. METHODS: This was a retrospective cross-sectional study, and all patients were aged ≥65 years and admitted through the Information Center of West China Hospital from October 2010 to April 2013...
February 22, 2017: Geriatrics & Gerontology International
https://www.readbyqxmd.com/read/28224412/antihypertensive-medication-use-and-risk-of-renal-cell-carcinoma
#2
Joanne S Colt, Jonathan N Hofmann, Kendra Schwartz, Wong-Ho Chow, Barry I Graubard, Faith Davis, Julie Ruterbusch, Sonja Berndt, Mark P Purdue
PURPOSE: Use of antihypertensive medications has been associated with renal cell carcinoma (RCC), but it is unclear whether specific types of medications increase RCC risk independent of the effect of hypertension, or whether the association varies by histologic subtype. To address this question, we analyzed data from a U.S. population-based case-control study of RCC. METHODS: We collected information on participants' use of drugs to treat hypertension, heart problems, weight control, and swelling...
February 21, 2017: Cancer Causes & Control: CCC
https://www.readbyqxmd.com/read/28224326/treatment-with-telmisartan-a-long-acting-angiotensin-ii-receptor-blocker-prevents-migraine-attacks-in-japanese-non-responders-to-lomerizine
#3
Ken Ikeda, Sayori Hanashiro, Yuichi Ishikawa, Masahiro Sawada, Maya Kyuzen, Harumi Morioka, Junya Ebina, Junpei Nagasawa, Masaru Yanagihashi, Ken Miura, Takehisa Hirayama, Takanori Takazawa, Osamu Kano, Kiyokazu Kawabe, Yasuo Iwasaki
Lomerizine, calcium channel blocker, is the most used medication for migraine prophylaxis in Japan. The effectiveness of this drug is reported as 50-75%. Telmisartan is angiotensin II receptor blockers which plasma half-life is 24 h. We examined whether telmisartan has preventative benefits in lomerizine non-responsive migraineurs. Lomerizine non-responders received telmisartan (20 mg/day) for 3 months after the investigation period of 3 months. Blood pressure, frequency of headache days/month, headache severity, and doses of triptans and analgesics were analyzed by Wilcoxon signed rank test...
February 21, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28220388/real-world-evidence-for-the-antianginal-efficacy-of-trimetazidine-from%C3%A2-the%C3%A2-russian-observational-choice-2-study
#4
Maria Glezer
INTRODUCTION: The guidelines recommend a beta-blocker or calcium channel blocker as the first-line medication for angina, supplemented by other agents for additional symptoms. One such agent is trimetazidine (TMZ), which has been shown to reduce the frequency of anginal episodes and improve exercise performance without affecting haemodynamic parameters. However, extensive real-world evidence for its efficacy in combination with first-line therapies has been lacking. METHODS: The aim of this large-scale, Russian, multicentre, 6-month, open-label, prospective observational study was to assess the effect of adding TMZ modified release 35 mg bid to background antianginal therapy in the real-world clinical setting...
February 20, 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28220370/the-effect-of-candesartan-on-pentraxin-3-plasma-levels-as-marker-of-endothelial-dysfunction-in-patients-with-essential-arterial-hypertension
#5
V Buda, M Andor, C Cristescu, M Voicu, F Cochera, P Tuduce, L Petrescu, M C Tomescu
BACKGROUND: In the last decades, the studies performed on the field of endothelial dysfunction confirmed the fact that the starting point of this pathology is the inflammation. Several inflammatory biomarkers had been discovered and studied, ones showing systemic inflammation, and others being more specific biomarkers and showing the local inflammation. Pentraxin-3 (PTX3) is a new inflammatory biomarker, from the same family as high-selectivity C-reactive protein (hs-CRP), but it is a more specific biomarker, due to its local production: the endothelial cells and not the liver like in the case of hs-CRP...
February 21, 2017: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/28219898/sk4-k-channels-are-therapeutic-targets-for-the-treatment-of-cardiac-arrhythmias
#6
Shiraz Haron-Khun, David Weisbrod, Hanna Bueno, Dor Yadin, Joachim Behar, Asher Peretz, Ofer Binah, Edith Hochhauser, Michael Eldar, Yael Yaniv, Michael Arad, Bernard Attali
Catecholaminergic polymorphic ventricular tachycardia (CPVT) is a stress-provoked ventricular arrhythmia, which also manifests sinoatrial node (SAN) dysfunction. We recently showed that SK4 calcium-activated potassium channels are important for automaticity of cardiomyocytes derived from human embryonic stem cells. Here SK4 channels were identified in human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) from healthy and CPVT2 patients bearing a mutation in calsequestrin 2 (CASQ2-D307H) and in SAN cells from WT and CASQ2-D307H knock-in (KI) mice...
February 20, 2017: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/28218209/clinical-study-of-acute-vasoreactivity-testing-in-patients-with-chronic-thromboembolic-pulmonary-hypertension
#7
Qi-Xia Xu, Yuan-Hua Yang, Jie Geng, Zhen-Guo Zhai, Juan-Ni Gong, Ji-Feng Li, Xiao Tang, Chen Wang
BACKGROUND: The clinical significance of acute vasoreactivity testing (AVT) in patients with chronic thromboembolic pulmonary hypertension (CTEPH) remains unclear. We analyzed changes in hemodynamics and oxygenation dynamics indices after AVT in patients with CTEPH using patients with pulmonary arterial hypertension (PAH) as controls. METHODS: We analyzed retrospectively the results of AVT in 80 patients with PAH and 175 patients with CTEPH registered in the research database of Beijing Chao-Yang Hospital between October 2005 and August 2014...
2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28217089/differential-modulation-of-rhythmic-brain-activity-in-healthy-adults-by-a-t-type-calcium-channel-blocker-an-meg-study
#8
Kerry D Walton, Emeline L Maillet, John Garcia, Timothy Cardozo, Isaac Galatzer-Levy, Rodolfo R Llinás
1-octanol is a therapeutic candidate for disorders involving the abnormal activation of the T-type calcium current since it blocks this current specifically. Such disorders include essential tremor and a group of neurological and psychiatric disorders resulting from thalamocortical dysrhythmia (TCD). For example, clinically, the observable phenotype in essential tremor is the tremor itself. The differential diagnostic of TCD is not based only on clinical signs and symptoms. Rather, TCD incorporates an electromagnetic biomarker, the presence of abnormal thalamocortical low frequency brain oscillations...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28214378/calcium-signaling-through-l-type-calcium-channels-role-in-pathophysiology-of-spinal-nociceptive-transmission
#9
REVIEW
Olivier Roca-Lapirot, Houda Radwani, Franck Aby, Frédéric Nagy, Marc Landry Pascal Fossat
L-type voltage-gated calcium channels (VGCCs) are ubiquitous channels in the central nervous system. L-type calcium channels (LTCs) are mostly post-synaptic channels regulating neuronal firing and gene expression. They play a role in important physio-pathological processes such as learning and memory, Parkinson's disease, autism and, as recognized more recently, in the pathophysiology of pain processes. Classically, the fundamental role of these channels in cardiovascular functions has limited the use of classical molecules to treat LTC-dependent disorders...
February 18, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28202361/pre-clinical-evaluation-of-voltage-gated-calcium-channel-blockers-derived-from-the-spider-p-%C3%A2-nigriventer-in-glioma-progression
#10
Natália Fontana Nicoletti, Thaís Cristina Erig, Rafael Fernandes Zanin, Marcelo Ricardo Roxo, Nelson Pires Ferreira, Marcus Vinicius Gomez, Fernanda Bueno Morrone, Maria Martha Campos
This study investigated the effects of P/Q- and N-type voltage-gated calcium channel (VGCC) blockers derived from P. nigriventer in glioma progression, by means of in vitro and in vivo experiments. Glioma cells M059J, U-138MG and U-251MG were used to evaluate the antiproliferative effects of P/Q- and N-type VGCC inhibitors PhTx3-3 and Phα1β from P. nigriventer (0.3-100 pM), in comparison to MVIIC and MVIIA from C. magus (0.3-100 pM), respectively. The toxins were also analyzed in a glioma model induced by implantation of GL261 mouse cells...
February 13, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28197715/vacuolar-ion-channels-in-the-liverwort-marchantia-polymorpha-influence-of-ion-channel-inhibitors
#11
Mateusz Koselski, Kazimierz Trebacz, Halina Dziubinska
Potassium-permeable slow activating vacuolar channels (SV) and chloride-permeable channels in the vacuole of the liverwort Marchantia polymorpha were characterized in respect to calcium dependence, selectivity, and pharmacology. The patch-clamp method was used in the study of ion channel activity in the vacuoles from the liverwort Marchantia polymorpha. The whole-vacuole recordings allowed simultaneous observation of two types of currents-predominant slow activated currents recorded at positive voltages and fast activated currents recorded at negative voltages...
February 14, 2017: Planta
https://www.readbyqxmd.com/read/28197288/serum-triglyceride-lowering-effect-of-cilnidipine-in-patients-with-essential-hypertension
#12
Prakash Kumar, Arijit Das, Satish Chandra, Manju Gari, U S P Keshri, Kusum Kumari
BACKGROUND: Many epidemiological studies have established the relationship between hypertension and dyslipidemia. Calcium channel blockers (CCBs) are one of the first-line drugs for newly diagnosed patients with essential hypertension. Cilnidipine as a newer CCB acting by blocking both L- and N-type calcium channels possesses additional beneficial effects apart from lowering blood pressure (BP). The aim of this study was to evaluate the effectiveness of cilnidipine in patients with essential hypertension with borderline dyslipidemia and its effects on lipid profile...
October 2016: Cardiology Research
https://www.readbyqxmd.com/read/28197287/effects-of-cilnidipine-on-heart-rate-and-uric-acid-metabolism-in-patients-with-essential-hypertension
#13
Arijit Das, Prakash Kumar, Abha Kumari, Satish Chandra, Manju Gari, Nidhi Singh, Debleena Dey
BACKGROUND: The relation between hypertension and hyperuricemia has been established by epidemiological studies. Calcium channel blockers are one of the first-line drugs for newly diagnosed patients with essential hypertension. Cilnidipine is a new calcium channel blocker acting by blocking both L- and N-type calcium channels. The aim of this study was to compare the effectiveness of amlodipine and cilnidipine in patients with essential hypertension and their effects on heart rate and serum uric acid levels...
October 2016: Cardiology Research
https://www.readbyqxmd.com/read/28196770/effect-of-low-intensity-cavitation-on-the-isolated-human-thoracic-artery-in%C3%A2-vitro
#14
Algimantas Bubulis, Vida Garalienė, Vytautas Jurėnas, Jonas Navickas, Saulius Giedraitis
Reported here are the results of an experimental study on the response to low-intensity cavitation induced by low-frequency (4-6 W/cm(2), 20 kHz and 32.6 kHz) ultrasound of isolated human arterial samples taken during conventional myocardial revascularization operations. Studies have found that low-frequency ultrasound results in a significant (48%-54%) increase in isometric contraction force and does not depend on the number of exposures (10 or 20) or the time passed since the start of ultrasound (0, 10 and 20 min), but does depend on the frequency and location (internal or external) of the blood vessels for the application of ultrasound...
February 10, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28195225/a-novel-bk-channel-targeted-peptide-suppresses-sound-evoked-activity-in-the-mouse-inferior-colliculus
#15
L L Scott, E J Brecht, A Philpo, S Iyer, N S Wu, S J Mihic, R W Aldrich, J Pierce, J P Walton
Large conductance calcium-activated (BK) channels are broadly expressed in neurons and muscle where they modulate cellular activity. Decades of research support an interest in pharmaceutical applications for modulating BK channel function. Here we report a novel BK channel-targeted peptide with functional activity in vitro and in vivo. This 9-amino acid peptide, LS3, has a unique action, suppressing channel gating rather than blocking the pore of heterologously expressed human BK channels. With an IC50 in the high picomolar range, the apparent affinity is higher than known high affinity BK channel toxins...
February 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28194398/sphincter-of-oddi-function-and-risk-factors-for-dysfunction
#16
REVIEW
Elham Afghani, Simon K Lo, Paul S Covington, Brooks D Cash, Stephen J Pandol
The sphincter of Oddi (SO) is a smooth muscle valve regulating the flow of biliary and pancreatic secretions into the duodenum, initially described in 1887 by the Italian anatomist, Ruggero Oddi. SO dysfunction (SOD) is a broad term referring to numerous biliary, pancreatic, and hepatic disorders resulting from spasms, strictures, and relaxation of this valve at inappropriate times. This review brings attention to various factors that may increase the risk of SOD, including but not limited to: cholecystectomy, opiates, and alcohol...
2017: Frontiers in Nutrition
https://www.readbyqxmd.com/read/28194001/enhancing-vta-cav1-3-l-type-ca-2-channel-activity-promotes-cocaine-and-mood-related-behaviors-via-overlapping-ampa-receptor-mechanisms-in-the-nucleus-accumbens
#17
A Martínez-Rivera, J Hao, T F Tropea, T P Giordano, M Kosovsky, R C Rice, A Lee, R L Huganir, J Striessnig, N A Addy, S Han, A M Rajadhyaksha
Genetic factors significantly influence susceptibility for substance abuse and mood disorders. Rodent studies have begun to elucidate a role of Cav1.3 L-type Ca(2+) channels in neuropsychiatric-related behaviors, such as addictive and depressive-like behaviors. Human studies have also linked the CACNA1D gene, which codes for the Cav1.3 protein, with bipolar disorder. However, the neurocircuitry and the molecular mechanisms underlying the role of Cav1.3 in neuropsychiatric phenotypes are not well established...
February 14, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28193357/efficient-and-clean-pre-concentration-of-ultra-trace-calcium-channel-blockers-from-biological-matrices-via-a-hyphenated-procedure-of-two-sequential-dispersive-solid-liquid-phase-microextractions
#18
Maryam Hemmati, Maryam Rajabi, Alireza Asghari
In the present work, we propose a safe, simple, and relatively rapid procedure for the efficient clean-up and pre-concentration of ultra-trace calcium channel blockers (CCBs) from the human plasma and urine samples followed by high performance liquid chromatography-ultraviolet detection. The proposed sample preparation method is a combination of two microextraction methods termed as ultrasound-assisted dispersive micro solid-phase extraction coupled with air-agitated liquid-liquid microextraction based on solidification of a floating organic droplet (UA-dμSPE-AA-LLME-SFO)...
April 1, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28192423/elucidation-of-molecular-kinetic-schemes-from-macroscopic-traces-using-system-identification
#19
Miguel Fribourg, Diomedes E Logothetis, Javier González-Maeso, Stuart C Sealfon, Belén Galocha-Iragüen, Fernando Las-Heras Andrés, Vladimir Brezina
Overall cellular responses to biologically-relevant stimuli are mediated by networks of simpler lower-level processes. Although information about some of these processes can now be obtained by visualizing and recording events at the molecular level, this is still possible only in especially favorable cases. Therefore the development of methods to extract the dynamics and relationships between the different lower-level (microscopic) processes from the overall (macroscopic) response remains a crucial challenge in the understanding of many aspects of physiology...
February 13, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28192226/use-of-preventive-medication-in-patients-with-limited-life-expectancy-a-systematic-review
#20
REVIEW
Arjun Poudel, Patsy Yates, Debra Rowett, Lisa M Nissen
CONTEXT: Optimal prescribing in patients with limited life expectancy remains unclear. OBJECTIVES: This study systematically reviews the published literature regarding the use of preventive medication in patients with reduced life expectancy. METHODS: A systematic literature search was conducted using three databases (MEDLINE, EMBASE and CINAHL). Articles published in English from January 1995 to December 2015 were retrieved for analysis to identify peer-reviewed, observational studies assessing use of preventive medications in patients with limited life expectancy...
February 9, 2017: Journal of Pain and Symptom Management
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