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https://www.readbyqxmd.com/read/28420580/comparative-pharmacodynamic-analysis-of-imidazoline-compounds-using-rat-model-of-ocular-mydriasis-with-a-test-of-quantitative-structure-activity-relationships
#1
Joanna Raczak-Gutknecht, Antoni Nasal, Teresa Frąckowiak, Anita Kornicka, Franciszek Sączewski, Renata Wawrzyniak, Łukasz Kubik, Roman Kaliszan
Imidazol(in)e derivatives, having the chemical structure similar to clonidine, exert diverse pharmacological activities connected with their interactions with alpha2-adrenergic receptors, e.g. hypotension, bradycardia, sedation as well as antinociceptive, anxiolytic, antiarrhythmic, muscle relaxant and mydriatic effects. The mechanism of pupillary dilation observed after systemic administration of imidazol(in)es to rats, mice and cats depends on the stimulation of postsynaptic alpha2-adrenoceptors within the brain...
April 6, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28419660/acute-masseter-dystonia-in-a-pediatric-patient-receiving-aripiprazole-and-methylphenidate-following-induction-of-general-anesthesia
#2
Michelle LeRiger, Jasper Williams, Greta Duncan-Wiebe, Mohanad Shukry
An 11-year-old male receiving aripiprazole, methylphenidate, and clonidine developed acute masseter dystonia inhibiting tracheal intubation after induction of general anesthesia with propofol and rocuronium. Following emergence, he had trismus and jaw discomfort. Psychiatry consultation suspected an acute dystonic reaction, so diphenhydramine was administered intravenously which resolved symptoms. We suspect chronic aripiprazole and methylphenidate usage combined with propofol administration in the short-term absence of methylphenidate made this patient susceptible to dystonic reactions...
April 17, 2017: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/28416983/local-conduction-during-acute-myocardial-infarction-in-rats-interplay-between-central-sympathetic-activation-and-endothelin
#3
Theofilos M Kolettis, Marianthi Kontonika, Vassilios La Rocca, Antonios P Vlahos, Giannis G Baltogiannis, Zenon S Kyriakides
We investigated the effects of autonomic dysfunction and endothelin on local conduction and arrhythmogenesis during myocardial infarction. We recorded ventricular tachyarrhythmias, monophasic action potentials, and activation sequences in wild-type and ETB-deficient rats displaying high endothelin levels. Central sympathetic inputs were examined after clonidine administration. Clonidine mitigated early and delayed arrhythmogenesis in ETB-deficient and wild-type rats, respectively. The right ventricular activation delay increased in clonidine-treated ETB-deficient rats and slightly decreased in wild-type rats...
April 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/28413281/a-comparative-study-of-the-effect-of-clonidine-fentanyl-and-the-combination-of-both-as-adjuvant-to-intrathecal-bupivacaine-for-postoperative-analgesia-in-total-abdominal-hysterectomy
#4
Fareed Ahmed, Mamta Khandelwal, Anil Sharma
BACKGROUND AND AIMS: The aim of this study was to evaluate the level of sensory block, onset and duration of motor block, postoperative analgesia, and adverse effects of combination of clonidine and fentanyl given intrathecally with hyperbaric bupivacaine (HB). MATERIAL AND METHODS: Three hundred and twenty eight patients were randomized into four groups. Group bupivacaine (group B) received 15 mg of HB; group bupivacaine clonidine (group BC) received 15 mg of HB plus 25 μg clonidine; group bupivacaine fentanyl (group BF) received 15 mg of HB plus 25 μg fentanyl and group bupivacaine clonidine fentanyl (group BCF) received 15 mg of HB plus 25 μg clonidine and 25 μg fentanyl intrathecally...
January 2017: Journal of Anaesthesiology, Clinical Pharmacology
https://www.readbyqxmd.com/read/28405129/effect-of-addition-of-fentanyl-and-clonidine-to-local-anesthetic-solution-in-peribulbar-block
#5
Poonam Nehra, Vrinda Oza, Vandana Parmar, Pooja Fumakiya
OBJECTIVE: To compare the effect of addition of fentanyl and clonidine as adjuvants to bupivacaine and lignocaine in peribulbar block. METHODS: The study was conducted on 105 adult patients of either sex, of ASA grade I and II undergoing ophthalmic surgeries. Patients were randomly divided into 3 groups of 35 each. All the patients were given peribulbuar block with 5ml lignocaine 2% +3 ml bupivacaine 0.5% +1 ml hyaluronidase (250 IU). In addition to this 1 ml normal saline was added to Group S, 25 μg fentanyl to Group F and 25 μg clonidine to Group C...
January 2017: Journal of Pharmacology & Pharmacotherapeutics
https://www.readbyqxmd.com/read/28399049/evaluation-of-gabapentin-and-clonidine-use-in-children-following-spinal-fusion-surgery-for-idiopathic-scoliosis-a-retrospective-review
#6
Dinesh K Choudhry, B Randall Brenn, Karen Sacks, Suken Shah
BACKGROUND: Opioids are the mainstay of therapy for pain relief following posterior spinal fusion (PSF) surgery. Various adjunctive medications are being used to augment analgesia and to reduce opioid-related side effects. At our institution, we have sequentially added 2 adjuncts to a standard morphine patient-controlled analgesia (PCA) regimen. The goal of our study was to evaluate pain control and the benefit of gabapentin and the combination of gabapentin and clonidine, whereas morphine PCA was in use in children following PSF surgery...
April 10, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28394849/inhibition-of-voltage-gated-na-channels-by-bupivacaine-is-enhanced-by-the-adjuvants-buprenorphine-ketamine-and-clonidine
#7
Carsten Stoetzer, Christine Martell, Jeanne de la Roche, Andreas Leffler
BACKGROUND AND OBJECTIVES: Regional anesthesia includes application of local anesthetics (LAs) into the vicinity of peripheral nerves. Prolongation or improvement of nerve blocks with LAs can be accomplished by coapplication with adjuvants, including buprenorphine, ketamine, and clonidine. While the mechanisms mediating prolonged or improved LA-induced effects by adjuvants are poorly understood, we hypothesized that they are likely to increase LA-induced block of voltage-gated Na channels...
April 7, 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28393639/the-safety-of-extended-release-drug-formulations-for-the-treatment-of-adhd
#8
Ann Childress
Attention-deficit/hyperactivity disorder (ADHD) is a complex neurobehavioral disorder affecting millions of patients worldwide. Effective treatments have been available for more than 60 years in the form of immediate-release (IR) stimulants However, stimulants have a high risk for abuse and are associated with adverse effects Including elevated blood pressure and heart rate, insomnia and decreased appetite. IR formulations also require multiple daily dosing. The search for improved safety, tolerability and convenience has led to the development of multiple extended-release (ER) stimulant and non-stimulant formulations...
April 10, 2017: Expert Opinion on Drug Safety
https://www.readbyqxmd.com/read/28391425/safety-tolerability-and-efficacy-of-drugs-for-treating-behavioural-insomnia-in-children-with-attention-deficit-hyperactivity-disorder-a-systematic-review-with-methodological-quality-assessment
#9
REVIEW
Shweta Anand, Henry Tong, Frank M C Besag, Esther W Chan, Samuele Cortese, Ian C K Wong
OBJECTIVE: A large proportion of paediatric patients with attention-deficit/hyperactivity disorder (ADHD) have associated sleep problems which not only affect the child's wellbeing but also impact family functioning. Management of sleep problems is consequently an important aspect of overall ADHD management in paediatric patients. Although some drugs are being used off-label for the management of paediatric insomnia, there is scant clinical evidence supporting their use. Our aim was to identify and assess the quality of published studies reporting the safety, tolerability and efficacy of drugs used for treating behavioural insomnia in children with ADHD...
April 8, 2017: Paediatric Drugs
https://www.readbyqxmd.com/read/28388512/a-highly-sensitive-method-for-the-simultaneous-uhplc-ms-ms-analysis-of-clonidine-morphine-midazolam-and-their-metabolites-in-blood-plasma-using-hfip-as-the-eluent-additive
#10
Rūta Veigure, Rudolf Aro, Tuuli Metsvaht, Joseph F Standing, Irja Lutsar, Koit Herodes, Karin Kipper
In intensive care units, the precise administration of sedatives and analgesics is crucial in order to avoid under- or over sedation and for appropriate pain control. Both can be harmful to the patient, causing side effects or pain and suffering. This is especially important in the case of pediatric patients, and dose-response relationships require studies using pharmacokinetic-pharmacodynamic modeling. The aim of this work was to develop and validate a rapid ultra-high performance liquid chromatographic-tandem mass spectrometric method for the analysis of three common sedative and analgesic agents: morphine, clonidine and midazolam, and their metabolites (morphine-3-glucuronide, morphine-6-glucuronide and 1'-hydroxymidazolam) in blood plasma at trace level concentrations...
March 10, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28372940/clonidine-use-in-the-outpatient-management-of%C3%A2-severe-secondary-dystonia
#11
C Sayer, D E Lumsden, M Kaminska, J-P Lin
OBJECTIVE: To evaluate the safety, efficacy and effective dosage of clonidine in the outpatient (OP) management of secondary dystonia. METHODS: A retrospective analysis of children and young people (CAYP) prescribed clonidine in an OP clinic between January 2011 and November 2013 for dystonia management. Of 224 children receiving clonidine, 149/224 did not have a movement disorder and 12/224 had no data leaving 63 movement disorder cases, 15/63 managed as in-patients, 15/48 suffered from tics leaving 33/63 for OP evaluation...
March 14, 2017: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/28372656/what-is-the-place-of-clonidine-in-anesthesia-systematic-review-and-meta-analyses-of-randomized-controlled-trials
#12
REVIEW
Miguel Carlos Sanchez Munoz, Marc De Kock, Patrice Forget
STUDY OBJECTIVE: A place for clonidine has been suggested for many indications in perioperative medicine. The aim of this systematic review and these meta-analyses is to systematically, and quantitatively, evaluate these potential indications of clonidine. DESIGN, SETTING, PATIENTS AND INTERVENTIONS: We selected and analyzed (qualitatively and, when possible, quantitatively) the available literature published on PubMed/Medline and on the Cochrane database. Inclusion criteria included: human randomized controlled trials involving adults who received perioperative systemic (oral, intramuscular, transdermal and intravenous) clonidine for every type of surgery...
May 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28371877/comprehensive-analysis-of-13-897-consecutive-regional-anesthetics-at-an-ambulatory-surgery-center
#13
Randall J Malchow, Rajnish K Gupta, Yaping Shi, Matthew S Shotwell, Lisa M Jaeger, Clifford Bowens
Objective.:  The authors investigated a wide range of perioperative outcome measures in the context of a robust regional anesthesia practice. Design.:  Comprehensive review of a prospectively collected six-year database. Setting.:  Freestanding, academic ambulatory surgery center. Subjects.:  There were 13,897 consecutive regional anesthetics in 10,338 patients. Methods.:  We investigated patient satisfaction, postoperative nausea and vomiting (PONV), postoperative pain, catheter analgesia, and complications...
March 24, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28367983/cholinesterase-like-organocatalysis-by-imidazole-and-imidazole-bearing-molecules
#14
Paola Nieri, Sara Carpi, Stefano Fogli, Beatrice Polini, Maria Cristina Breschi, Adriano Podestà
Organocatalysis, which is mostly explored for its new potential industrial applications, also represents a chemical event involved in endogenous processes. In the present study, we provide the first evidence that imidazole and imidazole derivatives have cholinesterase-like properties since they can accelerate the hydrolysis of acetylthiocholine and propionylthiocholine in a concentration-dependent manner. The natural imidazole-containing molecules as L-histidine and histamine show a catalytic activity, comparable to that of imidazole itself, whereas synthetic molecules, as cimetidine and clonidine, were less active...
April 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28367606/antidepressant-like-effect-of-the-endogenous-neuroprotective-amine-1metiq-in-clonidine-induced-depression-behavioral-and-neurochemical-studies-in-rats
#15
Lucyna Antkiewicz-Michaluk, Irena Romańska, Agnieszka Wąsik, Jerzy Michaluk
Biogenic amines such as norepinephrine, dopamine, and serotonin play a well-described role in the treatment of mood disorders especially depression. Animal models are widely used to study antidepressant-like effect in rodents; however, it should be taken into account that pharmacological models do not always answer to the complexity of the disease processes. This study verified the behavioral (forced swim test (FST), locomotor activity test) and neurochemical effects (monoamines metabolism) of a low dose of clonidine (0...
April 3, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28346213/development-and-application-of-a-high-performance-liquid-chromatography-stability-indicating-assay-for-beyond-use-date-determination-of-compounded-topical-gels-containing-multiple-active-drugs
#16
Gregory Gorman, Simara Sokom, Lori Coward, John J Arnold
Topical gels compounded by pharmacists are important clinical tools for the management of pain. Nevertheless, there is often a dearth of information about the chemical stability of drugs included in these topical formulations, complicating the assignment of beyond-use dating. The purpose of this study was to develop a high-performance liquid chromatography photodiode array-based stability-indicating assay that could simultaneously resolve six drugs (amitriptyline, baclofen, clonidine, gabapentin, ketoprofen, lidocaine) commonly included in topical gels for pain management and their potential degradation products...
March 2017: International Journal of Pharmaceutical Compounding
https://www.readbyqxmd.com/read/28341460/cortical-adrenoceptor-expression-function-and-adaptation-under-conditions-of-cannabinoid-receptor-deletion
#17
B A S Reyes, A F Carvalho, P Szot, D J Kalamarides, Q Wang, L G Kirby, E J Van Bockstaele
A neurochemical target at which cannabinoids interact to have global effects on behavior is brain noradrenergic circuitry. Acute and repeated administration of a cannabinoid receptor synthetic agonist is capable of increasing multiple indices of noradrenergic activity. This includes cannabinoid-induced 1) increases in norepinephrine (NE) release in the medial prefrontal cortex (mPFC); 2) desensitization of cortical α2-adrenoceptor-mediated effects; 3) activation of c-Fos in brainstem locus coeruleus (LC) noradrenergic neurons; and 4) increases in anxiety-like behaviors...
March 21, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28337083/continuous-infusion-etomidate-in-a-patient-receiving-extracorporeal-membrane-oxygenation
#18
Joseph M LaRochelle, Bonnie Desselle, Janet L Rossi
We describe a 16-year-old, 65-kg male deployed on extracorporeal membrane oxygenation (ECMO) for refractory respiratory failure secondary to ingestion of multiple substances. During his ECMO course, standard sedative and analgesic strategies failed and alternative medications were used. The patient received various dosages of fentanyl, morphine, hydromorphone, clonidine patches, dexmedetomidine, lorazepam, methadone, pentobarbital, olanzapine, and propofol. Despite administration of multiple agents, on day 29 of ECMO the patient experienced elevated blood pressures due to agitation, and continuous infusion etomidate was started...
January 2017: Journal of Pediatric Pharmacology and Therapeutics: JPPT: the Official Journal of PPAG
https://www.readbyqxmd.com/read/28330506/clonidine-for-sedation-in-the-critically-ill-a-systematic-review-and-meta-analysis
#19
Jing Gennie Wang, Emilie Belley-Coté, Lisa Burry, Mark Duffett, Timothy Karachi, Dan Perri, Waleed Alhazzani, Frederick D'Aragon, Hannah Wunsch, Bram Rochwerg
BACKGROUND: This systematic review and meta-analysis investigates the efficacy and safety of clonidine as a sedative in critically ill patients requiring invasive mechanical ventilation. METHODS: We performed a comprehensive search of MEDLINE, EMBASE, CINAHL and the Cochrane trial registry. We identified RCTs that compared clonidine to any non-clonidine regimen in critically ill patients, excluding neonates, requiring mechanical ventilation. The GRADE method was used to assess certainty of evidence...
February 25, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28329602/glycopyrrolate-induced-craniofacial-compensatory-hyperhidrosis-successfully-treated-with-oxybutynin-report-of-a-novel-adverse-effect-and-subsequent-successful-treatment
#20
Megan E Prouty, Ryan Fischer, Deede Liu
Hyperhidrosis, or abnormally increased sweating, is a condition that may have a primary or secondary cause. Usually medication- induced secondary hyperhidrosis manifests with generalized, rather than focal sweating. We report a 32-year-old woman with a history of palmoplantar hyperhidrosis for 15 years who presented for treatment and was prescribed oral glycopyrrolate. One month later, the palmoplantar hyperhidrosis had resolved, but she developed new persistent craniofacial sweating. After an unsuccessful trial of clonidine, oxybutynin resolved the craniofacial hyperhidrosis...
October 15, 2016: Dermatology Online Journal
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