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https://www.readbyqxmd.com/read/28918509/effects-of-tetramethylpyrazine-phosphate-on-pancreatic-islet-microcirculation-in-sd-rats
#1
X Xu, L Wu, Z Q Lu, P Xia, X P Zhu, X Gao
PURPOSES: Abnormal islet microcirculation impetus the insulin production and accelerates progression of Type 1 and 2 diabetes. In this study, we investigated whether tetramethylpyrazine phosphate (TMPP), a vasoactive substance, could regulate the islet microcirculation and insulin concentration and improve glycaemia in SD rats. METHODS: SD rats were randomly divided into two groups, the control and TMPP groups. Each group was further divided into three subgroups according to the intravenous injection of either saline, 15 or 30% glucose...
September 16, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28918300/dynamical-properties-of-lfps-from-mice-with-unilateral-injection-of-tent
#2
Eleonora Vannini, Matteo Caleo, Santi Chillemi, Angelo Di Garbo
Local field potential (LFP) recordings were performed from the visual cortex (V1) of a focal epilepsy mouse model. Epilepsy was induced by a unilateral injection of the synaptic blocker tetanus neurotoxin (TeNT). LFP signals were simultaneously recorded from V1 of both hemispheres of each animal under acute and chronic conditions (i.e. during and after the period of TeNT action). All data were analysed by using nonlinear time series methods. Suitable values of the lag time and embedding dimension for phase space reconstruction were estimated by employing well-known methods...
September 13, 2017: Bio Systems
https://www.readbyqxmd.com/read/28918203/short-term-effects-of-preoperative-beta-blocker-use-for-isolated-coronary-artery-bypass-grafting-a-systematic-review-and-meta-analysis
#3
Liangshan Wang, Hong Wang, Xiaotong Hou
OBJECTIVE: The use of preoperative beta-blockers has been used as a quality standard for patients undergoing coronary artery bypass grafting (CABG). However, the benefits of beta-blockers use before CABG remain controversial. We performed a systematic review and meta-analysis to investigate the short-term effects of preoperative beta-blocker use for patients undergoing isolated CABG. METHODS: We searched PubMed, Embase, and the Cochrane Library for English articles published from inception to August 16, 2016...
August 24, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28916714/interleukin-6-blockade-raises-ldl-via-reduced-catabolism-rather-than-via-increased-synthesis-a-cytokine-specific-mechanism-for-cholesterol-changes-in-rheumatoid-arthritis
#4
Jamie Robertson, Duncan Porter, Naveed Sattar, Chris J Packard, Muriel Caslake, Iain McInnes, David McCarey
OBJECTIVES: Patients with rheumatoid arthritis (RA) have reduced serum low-density lipoprotein cholesterol (LDL-c), which increases following therapeutic IL-6 blockade. We aimed to define the metabolic pathways underlying these lipid changes. METHODS: In the KALIBRA study, lipoprotein kinetic studies were performed on 11 patients with severe active RA at baseline and following three intravenous infusions of the IL-6R blocker tocilizumab. The primary outcome measure was the fractional catabolic rate (FCR) of LDL...
September 15, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28915952/iga-nephropathy-during-treatment-with-tnf-alpha-blockers-could-it-be-predicted
#5
Vito Di Lernia
Immunoglobulin A (IgA) nephropathy (IgAN) may sometimes be related to exposure to pharmacological agents, among which anti-Tumor Necrosis Factor (TNF)-alpha agents. The characteristic pathological feature is a deposition of IgA-containing immune complexes in vessel walls in the kidney mesangium. The link between TNF-alpha blockers and IgAN may be hypothesized examining diseases which share pathologic features. In this respect, idiopathic IgAN and Henoch Schonlein Purpura have been the object of studies revealing a pathogenetic role of aberrant glycosylation of IgA1 molecules...
September 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28915854/medical-therapy-following-hospitalization-for-heart-failure-with-reduced-ejection-fraction-and-association-with-discharge-to-long-term-care-a-cross-sectional-analysis-of-the-reasons-for-geographic-and-racial-differences-in-stroke-regards-population
#6
Emily B Levitan, Melissa K Van Dyke, Ligong Chen, Raegan W Durant, Todd M Brown, J David Rhodes, Olusola Olubowale, Oluwole Muyiwa Adegbala, Meredith L Kilgore, Justin Blackburn, Karen C Albright, Monika M Safford
BACKGROUND: Less intensive treatment for heart failure with reduced ejection fraction (HFrEF) may be appropriate for patients in long-term care settings because of limited life expectancy, frailty, comorbidities, and emphasis on quality of life. METHODS: We compared treatment patterns between REasons for Geographic And Racial Differences in Stroke (REGARDS) study participants discharged to long-term care versus home following HFrEF hospitalizations. We examined medical records and Medicare pharmacy claims for 147 HFrEF hospitalizations among 80 participants to obtain information about discharge disposition and medication prescriptions and fills...
September 16, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28914638/long-term-risk-and-predictors-of-cardiovascular-death-in-stable-coronary-artery-disease-the-coronor-study
#7
Christophe Bauters, Olivier Tricot, Thibaud Meurice, Nicolas Lamblin
BACKGROUND: There is limited knowledge on the residual risk of cardiovascular death (CVD) in patients with stable coronary artery disease (CAD) who receive modern secondary prevention. Our aim was to analyze the causes of death and to determine predictors of CVD in the 5-year CORONOR registry. METHODS: We studied 4184 consecutive CAD outpatients who were free from any myocardial infarction (MI) or coronary revascularization for more than 1 year at inclusion. Antithrombotics were prescribed in 99%, statins in 92%, inhibitors of renin-angiotensin system in 82%, and β-blockers in 79%; 86% had prior coronary revascularization...
September 13, 2017: Coronary Artery Disease
https://www.readbyqxmd.com/read/28914276/appropriate-reconciliation-of-cardiovascular-medications-after-elective-surgery-and-postdischarge-acute-hospital-and-ambulatory-visits
#8
Jonathan S Lee, Ralph Gonzales, Eric Vittinghoff, Kitty K Corbett, Kirsten E Fleischmann, Neil Sehgal, Andrew D Auerbach
OBJECTIVE: To describe appropriate discharge reconciliation of cardiovascular medications and assess associations with postdischarge healthcare utilization in surgical patients. DESIGN: Retrospective cohort study from January 2007 to December 2011. SETTING: An academic medical center. PATIENTS: Seven hundred and fifty-two adults undergoing elective noncardiac surgery and taking antiplatelet agents, beta-blockers, renin-angiotensin system inhibitors, or statin lipid-lowering agents before surgery...
September 2017: Journal of Hospital Medicine: An Official Publication of the Society of Hospital Medicine
https://www.readbyqxmd.com/read/28913986/chronic-spontaneous-urticaria-pathogenesis-and-treatment-considerations
#9
REVIEW
Allen P Kaplan
The treatment of chronic spontaneous urticaria begins with antihistamines; however, the dose required typically exceeds that recommended for allergic rhinitis. Second-generation, relatively non-sedating H₁-receptor blockers are typically employed up to 4 times a day. First-generation antihistamines, such as hydroxyzine or diphenhydramine (Atarax or Benadryl), were employed similarly in the past. Should high-dose antihistamines fail to control symptoms (at least 50%), omalizumab at 300 mg/month is the next step...
November 2017: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/28913816/re-visiting-the-endocannabinoid-system-and-its-therapeutic-potential-in-obesity-and-associated-diseases
#10
REVIEW
Joyce M Richey, Orison Woolcott
PURPOSE OF REVIEW: The purpose of the review was to revisit the possibility of the endocannabinoid system being a therapeutic target for the treatment of obesity by focusing on the peripheral roles in regulating appetite and energy metabolism. RECENT FINDINGS: Previous studies with the global cannabinoid receptor blocker rimonabant, which has both central and peripheral properties, showed that this drug has beneficial effects on cardiometabolic function but severe adverse psychiatric side effects...
September 14, 2017: Current Diabetes Reports
https://www.readbyqxmd.com/read/28913813/pharmacotherapy-pearls-for-emergency-neurological-life-support
#11
Gretchen M Brophy, Theresa Human
The appropriate use of medications during Emergency Neurological Life Support (ENLS) is essential to optimize patient care. Important considerations when choosing the appropriate agent include the patient's organ function and medication allergies, potential adverse drug effects, drug interactions and critical illness and aging pathophysiologic changes. Critical medications used during ENLS include hyperosmolar therapy, anticonvulsants, antithrombotics, anticoagulant reversal and hemostatic agents, anti-shivering agents, neuromuscular blockers, antihypertensive agents, sedatives, vasopressors and inotropes, and antimicrobials...
September 14, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/28913755/management-and-clinical-outcome-of-stable-coronary-artery-disease-in-austria-results-from-5%C3%A2-years-of-the-clarify-registry
#12
Irene M Lang, Roza Badr-Eslam, Nicola Greenlaw, Robin Young, Philippe Gabriel Steg
BACKGROUND: The population of patients with established coronary artery disease (CAD) is growing because of an improvement in outcomes and survival from acute disease episodes. Nevertheless, these patients remain at high risk of cardiovascular events. Thus, CAD management is important in prevention of disease progression. The objective of this analysis was to describe disease management and clinical outcome of Austrian outpatients with stable CAD over 5 years by using data from the international CLARIFY registry...
September 14, 2017: Wiener Klinische Wochenschrift
https://www.readbyqxmd.com/read/28913547/probucol-prevents-the-attenuation-of-%C3%AE-2-adrenoceptor-mediated-vasodilation-of-retinal-arterioles-in-diabetic-rats
#13
Asami Mori, Kentaro Higashi, Shun Wakao, Kenji Sakamoto, Kunio Ishii, Tsutomu Nakahara
Probucol is an antihyperlipidemic drug with potent antioxidant properties. Oxidative stress plays an important role in the pathogenesis of diabetic retinopathy. In this study, we aimed to investigate the protective effects of probucol against diabetes-induced retinal vascular dysfunction in a rat model of diabetes. Diabetes was induced by a combination of streptozotocin treatment and D-glucose feeding, and retinal vasodilator responses were assessed by measuring the diameter of retinal arterioles. The vasodilator effect of salbutamol, a β2-adrenoceptor agonist, on retinal arterioles was significantly diminished 2 weeks after the induction of diabetes...
September 14, 2017: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/28912182/hypertrophic-obstructive-cardiomyopathy-surgical-myectomy-and-septal-ablation
#14
REVIEW
Rick A Nishimura, Hubert Seggewiss, Hartzell V Schaff
Hypertrophic cardiomyopathy is a genetic disorder characterized by marked hypertrophy of the myocardium. It is frequently accompanied by dynamic left ventricular outflow tract obstruction and symptoms of dyspnea, angina, and syncope. The initial therapy for symptomatic patients with obstruction is medical therapy with β-blockers and calcium antagonists. However, there remain a subset of patients who have continued severe symptoms, which are unresponsive to medical therapy. These patients can be treated with septal reduction therapy, either surgical septal myectomy or alcohol septal ablation...
September 15, 2017: Circulation Research
https://www.readbyqxmd.com/read/28912118/topically-applied-carvedilol-attenuates-solar-ultraviolet-radiation-induced-skin-carcinogenesis
#15
Kevin M Huang, Sherry Liang, Steven Yeung, Etuajie Oiyemhonlan, Kristan H Cleveland, Cyrus Parsa, Robert Orlando, Frank L Meyskens, Bradley T Andresen, Ying Huang
In previous studies, the β-blocker carvedilol inhibited EGF-induced epidermal cell transformation and chemical carcinogen-induced mouse skin hyperplasia. As exposure to ultraviolet (UV) radiation leads to skin cancer, the present study examined whether carvedilol can prevent UV-induced carcinogenesis. Carvedilol absorbs UV like a sunscreen; thus, to separate pharmacological from sunscreen effects, 4-hydroxycarbazole (4-OHC), which absorbs UV to the same degree as carvedilol, served as control. JB6 P(+) cells, an established epidermal model for studying tumor promotion, were used for evaluating the effect of carvedilol on UV-induced neoplastic transformation...
August 15, 2017: Cancer Prevention Research
https://www.readbyqxmd.com/read/28912106/vascular-activation-of-k-channels-and-na-k-atpase-activity-of-estrogen-deficient-female-rats
#16
Rogério Faustino Ribeiro, Jonaina Fiorim, Vinicius Bermond Marques, Karoline de Sousa Ronconi, Tatiani Botelho, Marcella D Grando, Lusiane M Bendhack, Dalton Valentim Vassallo, Ivanita Stefanon
The goal of the present study was to evaluate vascular potassium channels and Na(+)-K(+)-ATPase activity in estrogen deficient female rats. Female rats that underwent ovariectomy were assigned to receive daily treatment with placebo (OVX) or estrogen replacement (OVX+E2, 1mg/kg, once a week, i.m.). Aortic rings were used to examine the involvement of K(+) channels and Na(+)-K(+)-ATPase in vascular reactivity. Acetylcholine (ACh)-induced relaxation was analyzed in the presence of L-NAME (100μM) and K(+) channels blockers: tetraethylammonium (TEA, 5mM), 4-aminopyridine (4-AP, 5mM), iberiotoxin (IbTX, 30nM), apamin (0...
September 11, 2017: Vascular Pharmacology
https://www.readbyqxmd.com/read/28911739/role-of-inward-rectifier-potassium-channels-in-salivary-gland-function-and-sugar-feeding-of-the-fruit-fly-drosophila-melanogaster
#17
Daniel R Swale, Zhilin Li, Felix Guerrero, Adalberto A Pérez De León, Lane D Foil
The arthropod salivary gland is of critical importance for horizontal transmission of pathogens, yet a detailed understanding of the ion conductance pathways responsible for saliva production and excretion is lacking. A superfamily of potassium ion channels, known as inward rectifying potassium (Kir) channels, is overexpressed in the Drosophila salivary gland by 32-fold when compared to the whole body mRNA transcripts. Therefore, we aimed to test the hypothesis that pharmacological and genetic depletion of salivary gland specific Kir channels alters the efficiency of the gland and reduced feeding capabilities using the fruit fly Drosophila melanogaster as a model organism that could predict similar effects in arthropod disease vectors...
September 2017: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/28911528/macrophages-in-oxidative-stress-and-models-to-evaluate-the-antioxidant-function-of-dietary-natural-compounds
#18
REVIEW
Omir Adrian Castaneda, Sheng-Chi Lee, Chi-Tang Ho, Tzou-Chi Huang
Antioxidant testing of natural products has attracted increasing interest in recent years, mainly due to the fact that an antioxidant-rich diet might provide health benefits. Activated macrophages are a major source of reactive oxygen species, reactive nitrogen species, and peroxynitrite generated through the so-called respiratory burst. Constitutively released proinflammatory cytokine, especially tumor necrosis factor-α, triggers nuclear factor-κB, and activator protein-1 translocation leading to the over production of reactive oxygen species and reactive nitrogen species in macrophages...
January 2017: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/28911306/management-of-blood-pressure-and-heart-rate-in-patients-with-diabetes-mellitus
#19
Ioanna Gouni-Berthold, Ruth Hanssen, Lisa Ravarani, Heiner K Berthold
BACKGROUND: In patients with diabetes mellitus (DM) there is a clear association between blood pressure (BP) levels and macrovascular and microvascular complications. However, the BP targets that need to be achieved for optimal outcomes remain controversial. METHODS: The purpose of this narrative review is to discuss BP targets and management in patients with DM. The subject of elevated heart rate, which has been associated with mortality in many populations, and which is observed in some patients with DM will also be addressed...
June 8, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28911302/what-is-the-real-efficacy-of-beta-blockers-for-the-treatment-of-essential-hypertension
#20
Christian Höcht, Facundo M Bertera, Julieta S Del Mauro, Yanina Santander Plantamura, Carlos A Taira, Ariel H Polizio
OBJECTIVE: This review covers the pharmacokinetics and pharmacodynamic of β-blockers, the rationale for their use, some recent controversies in its use for managing hypertension, as well as, the beneficial properties of the third-generation β-blockers beyond hypertension. BACKGROUND: The efficacy and safety of -blockers in the treatment of hypertension and other cardiovascular diseases have been established during more than 50 years of clinical experience. Recent updates of clinical guidelines have downgraded the use of -blockers for the treatment of uncomplicated hypertension to second and third line therapy...
June 7, 2017: Current Pharmaceutical Design
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