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Nicardipine

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https://www.readbyqxmd.com/read/28822472/tens-like-stimulation-downregulates-inflammatory-cytokines-in-a-pc-12-cell-line
#1
Guy Sovak, Brian Budgell
OBJECTIVES: The purpose of this study was to evaluate the effects of transcutaneous electrical nerve stimulation (TENS)-like stimulation on the expression of the proinflammatory cytokines tumor necrosis factor α (TNF-α), interleukin 1β (IL-1β), and IL-6 in PC-12 cells, which are commonly used as neuronal cell models. METHODS: Nerve growth factor-differentiated PC-12 cells were exposed to electrical stimulation for 15 minutes at 1 mA, 200 μs, and 100 Hz. Cell lysate from stimulated and control cells was assayed for TNF-α, IL-1β, and IL-6...
July 2017: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/28820038/comparison-of-clevidipine-and-nicardipine-for-acute-blood-pressure-reduction-in-patients-with-stroke
#2
Teresa A Allison, Stephanie Bowman, Brian Gulbis, Heather Hartman, Sara Schepcoff, Kiwon Lee
OBJECTIVE: The aim of this study was to determine whether clevidipine (CLEV) achieved faster blood pressure control compared to nicardipine (NIC) in patients presenting with either an acute ischemic stroke (AIS) or a spontaneous intracerebral hemorrhage (ICH). METHODS: This was a retrospective, observational, cohort study conducted in patients with AIS or ICH admitted to the emergency department of a Comprehensive Stroke Center from November 2011 to June 2013 who received CLEV or NIC continuous infusion for acute blood pressure management...
January 1, 2017: Journal of Intensive Care Medicine
https://www.readbyqxmd.com/read/28781802/sorafenib-induced-reversible-posterior-leukoencephalopathy-in-patients-with-renal-cell-carcinoma-a-report-of-two-cases
#3
Nobuki Furubayashi, Takahito Negishi, Hidenori Iwai, Kei Nagase, Motonobu Nakamura
Reversible posterior leukoencephalopathy syndrome (RPLS) is a rare clinicoradiological syndrome that is characterized by neurological symptoms, including seizures, headaches, visual abnormalities, confusion and encephalopathy, accompanied by vasogenic edema of the posterior white matter observed on neuroimaging. Sorafenib is an inhibitor of pro-angiogenic receptor tyrosine kinases, such as vascular endothelial growth factor receptor 2, platelet-derived growth factor receptor β, and vascular endothelial growth factor receptor 3...
August 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28702681/intra-arterial-thrombolysis-for-extremity-frostbite-decreases-digital-amputation-rates-and-hospital-length-of-stay
#4
Nishant Patel, Dhivya R Srinivasa, Ravi N Srinivasa, Joseph J Gemmete, Venkat Krishnamurthy, Narasimham Dasika, Shilpa N Reddy, Matthew L Osher, Erika D Sears, Jeffrey Forris Beecham Chick
PURPOSE: To report outcomes of intra-arterial thrombolysis versus non-thrombolytic management of severe frostbite with respect to digital amputation rates and hospital length of stay (LOS). MATERIALS AND METHODS: Seventeen patients with severe frostbite were identified from 2000 to 2017. Eight (47%) patients with mean age of 40 years underwent intra-arterial thrombolysis and served as the treatment group. Nine (53%) patients with mean age of 53 years received non-thrombolytic management and served as the control group...
July 12, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28679672/the-impact-of-the-hepatocyte-to-plasma-ph-gradient-on-the-prediction-of-hepatic-clearance-and-drug-drug-interactions-for-cyp2c9-and-cyp3a4-substrates
#5
Luc Raymond Albert Rougee, Michael A Mohutsky, David W Bedwell, Kenneth J Ruterbories, Stephen D Hall
Surrogate assays for drug metabolism and inhibition are traditionally performed in buffer systems at pH 7.4, despite evidence that hepatocyte intracellular pH is 7.0. This pH gradient can result in a pKa-dependent change in intracellular/extracellular concentrations for ionizable drugs that could affect predictions of clearance and P450 inhibition. The effect of microsomal incubation pH on in vitro enzyme kinetic parameters for CYP2C9 (diclofenac, (S)-warfarin) and CYP3A4 (midazolam, dextromethorphan, testosterone) substrates, enzyme specific reversible inhibitors (amiodarone, desethylamiodarone, clozapine, nicardipine, fluconazole, fluvoxamine, itraconazole) and a mechanism-based inhibitor (amiodarone) was investigated...
July 5, 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/28639533/comparison-of-clinical-efficacy-among-remifentanil-nicardipine-and-remifentanil-plus-nicardipine-continuous-infusion-for-hypotensive-anesthesia-during-arthroscopic-shoulder-surgery
#6
Joon Yub Kim, Seong Hun Song, Jae Ho Cho, Hyung Rae Cho
PURPOSE: Hypotensive anesthesia is crucial during arthroscopic shoulder surgery to reduce bleeding and allow for clear visibility. The aim of this study was to compare the clinical efficacy of continuous infusion of remifentanil, nicardipine, and remifentanil plus nicardipine to control hypotensive anesthesia in arthroscopic shoulder surgery. METHODS: For this study, we enrolled 45 consecutive patients who were scheduled to have arthroscopic rotator cuff repair surgery and randomly allocated them into remifentanil (group R, n = 15), nicardipine (group N, n = 15), and remifentanil plus nicardipine (group RN, n = 15) groups...
May 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28550055/potential-drug-interactions-mediated-by-renal-organic-anion-transporter-oatp4c1
#7
Toshihiro Sato, Eikan Mishima, Nariyasu Mano, Takaaki Abe, Hiroaki Yamaguchi
Organic anion-transporting polypeptide 4C1 (OATP4C1) is an organic anion transporter expressed in the basolateral membrane of the renal proximal tubules. It plays a major role in the urinary excretion of both exogenous drugs and endogenous compounds. Our previous studies have indicated the importance of OATP4C1 in pathologic and physiologic conditions; however, the majority of its pharmacologic characteristics remained unclear. Therefore, to provide essential information for clinical drug therapy decisions and drug development, we clarified drug interactions mediated by OATP4C1...
August 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28515710/resistant-hypertension-after-hypertensive-intracerebral-hemorrhage-is-associated-with-more-medical-interventions-and-longer-hospital-stays-without-affecting-outcome
#8
Daojun Hong, Dana Stradling, Cyrus K Dastur, Yama Akbari, Leonid Groysman, Lama Al-Khoury, Jefferson Chen, Steven L Small, Wengui Yu
BACKGROUND: Hypertension (HTN) is the most common cause of spontaneous intracerebral hemorrhage (ICH). The aim of this study is to investigate the role of resistant HTN in patients with ICH. METHODS AND RESULTS: We conducted a retrospective study of all consecutive ICH admissions at our medical center from November 2013 to October 2015. The clinical features of patients with resistant HTN (requiring four or more antihypertensive agents to keep systolic blood pressure <140 mm Hg) were compared with those with responsive HTN (requiring three or fewer agents)...
2017: Frontiers in Neurology
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
#9
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/28430036/paradoxical-cerebrovascular-hemodynamic-changes-with-nicardipine
#10
Shouri Lahiri, Mani Nezhad, Konrad H Schlick, Brenda Rinsky, Axel Rosengart, Stephan A Mayer, Patrick D Lyden
OBJECTIVE Intravenous nicardipine is commonly used for blood pressure reduction in patients with acute stroke. However, few studies have described its effects on cerebrovascular hemodynamics as measured by transcranial Doppler (TCD) waveform analysis and pulsatility index (PI). In this study, the authors report examples of a consistent but paradoxical finding associated with nicardipine that suggests intracranial vasoconstriction, contrary to what is expected from a vasodilator. METHODS The data presented are from a convenience sample of patients who underwent TCD monitoring before, after, or during nicardipine administration...
April 21, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28418103/neurogenic-and-myogenic-patterns-of-electrical-activity-in-isolated-intact-mouse-colon
#11
T J Hibberd, M Costa, L Travis, S J H Brookes, D A Wattchow, J Feng, H Hu, N J Spencer
BACKGROUND: Relatively little is known about the electrical rhythmicity of the whole colon, where long neural pathways are preserved. METHODS: Smooth muscle electrical activity was recorded extracellularly from the serosa of isolated flat-sheet preparations consisting of the whole mouse colon (n=31). KEY RESULTS: Two distinct electrical patterns were observed. The first, long intense spike bursts, occurred every 349±256 seconds (0.2±0.2 cpm), firing action potentials for 31±11 seconds at 2...
April 18, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28407303/rifampicin-reverses-nicardipine-effect-inducing-uncontrolled-essential-hypertension
#12
Elena-Mihaela Cordeanu, Sébastien Gaertner, Alix Faller, Corina Mirea, Jean-Marc Lessinger, Veronique Kemmel, Dominique Stephan
Dihydropyridine calcium-channel blockers are a known substrate for the cytochrome P450 isoform 3A4. Rifampicin, an antitubercular agent, is one of the most potent inducers of hepatic and intestinal CYP3A4 thus increasing dihydropyridine metabolism. We report a case of a 67-year-old hypertensive female treated with a 4-drug antihypertensive regimen including a dihydropyridine (nicardipine 50mg bid), who was admitted for septic arthritis of the knee requiring antibiotic treatment with teicoplanin 400mg od and rifampicin 600mg bid...
April 13, 2017: Fundamental & Clinical Pharmacology
https://www.readbyqxmd.com/read/28356002/prognostic-parameters-for-symptomatic-intracranial-hemorrhage-after-intravenous-thrombolysis-in-acute-ischemic-stroke-in-an-asian-population
#13
Thanin Lokeskrawee, Sombat Muengtaweepongsa, Jayanton Patumanond, Somsak Tiamkao, Thanoot Thamangraksat, Phanyarat Phankhian, Polchai Pleumpanupatand, Paworamon Sribussara, Teeraparp Kitjavijit, Anake Supap, Weerawan Rattanaphibool, Jariya Prisiri
Symptomatic intracranial hemorrhage (sICH) is a major complication after intravenous thrombolysis leading to severe disability and death. The incidence was higher in Asian than in westernized countries. Prognostic factors across ethnicities are presumably different. Studies in Asian populations are limited. Clinical data from January 2008 to September 2016 in one provincial and four regional hospitals in the northern part of Thailand were retrospectively reviewed. Patients were those with acute ischemic stroke, to whom recombinant tissue plasminogen activator (rt-PA) had been prescribed...
March 27, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28349560/evaluation-of-the-chiral-recognition-properties-and-the-column-performances-of-three-chiral-stationary-phases-based-on-cellulose-for-the-enantioseparation-of-six-dihydropyridines-by-high-performance-liquid-chromatography
#14
Jia Yu, Jing Tang, Xiaowei Yuan, Xingjie Guo, Longshan Zhao
Separations of six dihydropyridine enantiomers on three commercially available cellulose-based chiral stationary phases (Chiralcel OD-RH, Chiralpak IB, and Chiralpak IC) were evaluated with high-performance liquid chromatography (HPLC). The best enantioseparation of the six chiral drugs was obtained with a Chiralpak IC (250 × 4.6 mm i.d., 5 μm) column. Then the influence of the mobile phase including an alcohol-modifying agent and alkaline additive on the enantioseparation were investigated and optimized...
March 28, 2017: Chirality
https://www.readbyqxmd.com/read/28277420/regional-to-the-rescue-axillary-brachial-plexus-nerve-block-facilitates-removal-of-entrapped-transradial-catheter-placed-for-cardiac-catheterization
#15
Brian M Fitzgerald, Lee A Babbel, Ferdinand K Bacomo, Sandeep T Dhanjal
OBJECTIVE: Our objective was to describe the first reported use of an axillary brachial plexus block to treat the entrapment of a transradial artery catheter due to vasospasm. CASE REPORT: A 42-year-old man undergoing transradial arterial cardiac catheterization suffered arterial vasospasm causing the catheter to become entrapped and refractory to conservative (warm compresses) and standard pharmacologic interventions (intracatheter verapamil, intravenous infusions of nitroglycerin and nicardipine, and subcutaneous lidocaine and topical nitroglycerin)...
March 8, 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28267024/effectiveness-of-intrathecal-nicardipine-on-cerebral-vasospasm-in-non-traumatic-subarachnoid-hemorrhage-a-systematic-review-protocol
#16
Daniel Stuart, Robin Christian, Hartmut Uschmann
The objective of this review is to determine the effectiveness of intrathecal (IT) nicardipine on cerebral vasospasm and its impact on the following outcome measures: mean flow velocities, angiographic and/or clinical vasospasm and infection rates. Specifically, the review question is: What is the effectiveness of IT nicardipine on cerebral vasospasm in adult patients with aneurysmal subarachnoid hemorrhage?
March 2017: JBI Database of Systematic Reviews and Implementation Reports
https://www.readbyqxmd.com/read/28236873/perianesthetic-refractory-anaphylactic-shock-with-cefuroxime-in-a-patient-with-history-of-penicillin-allergy-on-multiple-antihypertensive-medications
#17
Deb Sanjay Nag, Devi Prasad Samaddar, Shashi Kant, Pratap Rudra Mahanty
We report a case of perianesthetic refractory anaphylactic shock with cefuroxime in a patient with history of penicillin allergy on regular therapy with atenolol, losartan, prazosin and nicardipine. Severe anaphylactic shock was only transiently responsive to 10mL of (1:10,000) epinephrine and needed norepinephrine and dopamine infusion. Supportive therapy with vasopressors and inotropes along with mechanical ventilation for the next 24hours resulted in complete recovery. She was successfully operated upon 2 weeks later with the same anesthetic drugs but intravenous ciprofloxacin as the alternative antibiotic for perioperative prophylaxis...
March 2017: Brazilian Journal of Anesthesiology
https://www.readbyqxmd.com/read/28230199/activation-of-angiotensin-ii-type-1-receptors-increases-d4-dopamine-receptor-expression-in-rat-renal-proximal-tubule-cells
#18
Luxun Tang, Shuo Zheng, Hongmei Ren, Duofen He, Chunyu Zeng, Wei Eric Wang
Both the dopaminergic and renin-angiotensin systems play important roles in the regulation of blood pressure. Our previous study showed that the stimulation of dopaminergic D4 receptors reduced angiotensin II type 1 (AT1) receptor expression in renal proximal tubule (RPT) cells. In this study, we tested whether AT1 receptors, in return, would regulate D4 receptor expression and function in RPT cells. Expression of the D4 receptor from Wistar-Kyoto (WKY) or spontaneously hypertensive rats (SHRs) RPT cells and renal cortex tissues were determined by western blot, and Na(+)-K(+) ATPase activity was determined using an enzyme assay...
July 2017: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/28178175/the-effect-of-nicardipine-on-the-surgical-pleth-index-during-thyroidectomy-under-general-anesthesia-a-prospective-double-blind-randomized-controlled-trial
#19
RANDOMIZED CONTROLLED TRIAL
Young Ju Won, Byung Gun Lim, Gwi Eun Yeo, Min Ki Lee, Dong Kyu Lee, Heezoo Kim, Il Ok Lee, Myoung Hoon Kong
BACKGROUND: The effectiveness of surgical pleth index (SPI) for managing nociception-antinociception balance during general anesthesia with vasodilators, including nicardipine has not been demonstrated. We aimed to compare the time course during surgery in SPI values in patients receiving nicardipine or remifentanil infusion during thyroidectomy. METHODS: Forty patients undergoing thyroidectomy were randomly assigned to receive nicardipine (group N; n = 19) or remifentanil (group R; n = 21) along with induction (propofol, fentanyl, and rocuronium) and maintenance (50% desflurane/nitrous oxide in oxygen) anesthesia (goal bispectral index [BIS] ∼50)...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28118673/an-appraisal-of-drug-drug-interactions-with-green-tea-camellia-sinensis
#20
REVIEW
Ahmed A Albassam, John S Markowitz
This review summarizes published in vitro, animal, and clinical studies investigating the effects of green tea (Camellia sinensis) extract and associated catechins on drug-metabolizing enzymes and drug transporters. In vitro studies suggest that green tea extract and its main catechin, (-)-epigallocatechin-3-gallate, to varying degrees, inhibit the activity of CYP1A1, CYP1A2, CYP2B6, CYP2C8, CYP2C9, CYP2D6, and CYP3A4. UGT1A1 and UGT1A4 isoforms were also inhibited by (-)-epigallocatechin-3-gallate. Animal studies suggest green tea extract and/or (-)-epigallocatechin-3-gallate significantly increase the bioavailability of diltazem, verapamil, tamoxifen simvastatin, 5-fluorouracil, and nicardipine...
April 2017: Planta Medica
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