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https://www.readbyqxmd.com/read/28230659/sulfonylurea-blockade-of-k-atp-channels-unmasks-a-distinct-type-of-glucose-induced-ca-2-decrease-in-pancreatic-%C3%AE-cells
#1
Bo Hellman, Heléne Dansk, Eva Grapengiesser
OBJECTIVES: This study aimed to explore how sulfonylurea blockade of KATP channels affects the early Ca signals for glucose generation of insulin release. METHODS: Cytoplasmic Ca was measured with ratiometric microfluorometry in isolated mouse islets loaded with Fura-PE3. RESULTS: After sulfonylurea blockade of the KATP channels (50 μM-1 mM tolbutamide or 1 μM-1 mM gliclazide), increase of glucose from 3 to 20 mM resulted in suppression of elevated Ca during a 3- to 5-minute period...
February 23, 2017: Pancreas
https://www.readbyqxmd.com/read/28222143/antidepressive-and-antinociceptive-effects-of-ethanolic-extract-and-fruticuline-a-from-salvia-lachnostachys-benth-leaves-on-rodents
#2
Joyce Alencar Santos, Ana Claudia Piccinelli, Maira Dante Formagio, Cristhian Santos Oliveira, Elide Pereira Dos Santos, Maria Élida Alves Stefanello, Ubirajara Lanza Junior, Rodrigo Juliano Oliveira, Mário Mateus Sugizaki, Cândida Aparecida Leite Kassuya
OBJECTIVES: This study investigated the antidepressant and antinociceptive effects of ethanolic extract (SLEE) and pure fruticuline A obtained from Salvia lachnostachys leaves on rats and mice. METHODS: In this study, SLEE (100 mg/kg, p.o. route) was evaluated for its effects on spared nerve injury (SNI) in rats. The animals were submitted to mechanical sensitivity, forced swim (FST) and cold sensitivity tests 10 and 15 days after surgery. SLEE (100 mg/kg, p.o.) and fruticuline A (3 mg/kg, p...
2017: PloS One
https://www.readbyqxmd.com/read/28220474/buprenorphine-for-managing-opioid-withdrawal
#3
REVIEW
Linda Gowing, Robert Ali, Jason M White, Dalitso Mbewe
BACKGROUND: Managed withdrawal is a necessary step prior to drug-free treatment or as the endpoint of substitution treatment. OBJECTIVES: To assess the effects of buprenorphine versus tapered doses of methadone, alpha2-adrenergic agonists, symptomatic medications or placebo, or different buprenorphine regimens for managing opioid withdrawal, in terms of the intensity of the withdrawal syndrome experienced, duration and completion of treatment, and adverse effects...
February 21, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28219708/novel-technique-to-determine-the-pka-of-clonidine-at-prejunctional-%C3%AE-2-adrenoceptors-in-cardiac-and-vascular-sympathetic-transmission
#4
James A Angus, Pravin Rajasekaran, Christine E Wright
Analytical pharmacology draws heavily on the concept of equilibrium of agonist and silent antagonist concentrations competing at a specific receptor site. This condition breaks down in nerve transmission when transmitter release is inhibited by prejunctional α2-adrenoceptors activated by an agonist such as clonidine. We have developed a method that allows the agonist dissociation constant KA of clonidine to be determined in a robust isolated right atrial assay of mouse, rat and guinea pig. By applying low numbers of field pulses 1-4 to prevent autoinhibitory feedback, clonidine shifted the nerve pulse stimulation-tachycardia curves to the right...
February 17, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28217051/comparison-of-intrathecal-clonidine-and-fentanyl-in-hyperbaric-bupivacaine-for-spinal-anesthesia-and-postoperative-analgesia-in-patients-undergoing-lower-abdominal-surgeries
#5
Baljit Singh Bajwa, Arwinder Pal Singh, Angelina K Rekhi
BACKGROUND: There are many adjuvant used along with bupivacaine for subarachnoid block, but fentanyl and clonidine are commonly used as adjuvant to intrathecal bupivacaine for prolonging both sensory and motor blockade as well as postoperative analgesia in patients undergoing lower abdominal surgeries. OBJECTIVE: There is a paucity of studies comparing the efficacy of fentanyl and clonidine as adjuvant to intrathecal bupivacaine for improving intraoperative effect and postoperative analgesia in lower abdominal surgeries instigated us compare the effect of these drugs...
January 2017: Saudi Journal of Anaesthesia
https://www.readbyqxmd.com/read/28210917/adjuvant-agents-in-regional-anesthesia-in-the-ambulatory-setting
#6
REVIEW
Veerandra Koyyalamudi, Sudipta Sen, Shilpadevi Patil, Justin B Creel, Elyse M Cornett, Charles J Fox, Alan D Kaye
PURPOSE OF REVIEW: A majority of surgical practice has involved ambulatory centers with the number of outpatient operations in the USA doubling to 26.8 million per year. Local anesthesia delivery provides numerous benefits, including increased satisfaction, earlier discharge, and reduction in unplanned hospital admission. Further, with the epidemic of opioid mediated overdoses, local anesthesia can be a key tool in providing an opportunity to reduce the need for other analgesics postoperatively...
January 2017: Current Pain and Headache Reports
https://www.readbyqxmd.com/read/28208979/evaluation-of-the-efficacy-of-bupivacaine-0-5-alone-or-with-clonidine-1%C3%AE-g-kg-versus-control-in-a-single-level-paravertebral-blockin-patients-undergoing-pcnl-procedure
#7
Trupti S Kamble, Charulata Mahesh Deshpande
INTRODUCTION: Percutaneous Nephrolithotomy (PCNL) is a widely used procedure to remove complex upper tract renal calculi by means of a nephroscope. Although less invasive, PCNL is associated with significant pain owing to soft tissue injury. Most of these patients have mild to moderately compromised renal function. An anaesthesia plan that reduces intraoperative requirement of anaesthetics, analgesics, muscle relaxants and postoperative requirement of systemic analgesics is essential...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28207646/translational-interpretations-of-combined-bupivacaine-clonidine-buprenorphine-dexamethasone
#8
Brian A Williams, James W Ibinson, Catalin S Ezaru, Hulimangala Rakesh, Michael P Mangione
No abstract text is available yet for this article.
March 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28162606/-365-pain-modulation-and-autonomic-function-the-effect-of-clonidine
#9
H Nahman-Averbuch, L Dayan, E Sprecher, U Hochberg, S Brill, D Yarnitsky, G Jacob
No abstract text is available yet for this article.
April 2016: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/28151790/management-of-opioid-and-sedative-weaning-in-pediatric-congenital-heart-disease-patients-assessing-the-state-of-practice
#10
Caitlin O'Connell, Sonja Ziniel, Lauren Hartwell, Jean Connor
BACKGROUND: Opioid and sedative medications are commonly used to treat pediatric patients with congenital heart disease; however, their use is not without adverse effects. Symptoms of withdrawal can occur if the medications are discontinued abruptly or weaned too quickly. OBJECTIVE: The aim of this study was to understand and describe the current management of opioid and sedative weaning in pediatric congenital heart disease patients in freestanding children's hospitals across the United States...
March 2017: Dimensions of Critical Care Nursing: DCCN
https://www.readbyqxmd.com/read/28128088/gestational-pityriasis-rosea-suggestions-for-approaching-affected-pregnant-women
#11
Alexandra Monastirli, Efstathia Pasmatzi, George Badavanis, Dionysios Tsambaos
Dear Editor, Pityriasis rosea is a common, acute, and self-limiting dermatosis, which is associated with the endogenous systemic reactivation of human herpesvirus (HHV)-6 and/or HHV-7 (1). It predominantly affects individuals of both sexes in their second or third decade of life and is clinically characterized by the occurrence of an initial erythematosquamous plaque followed by the appearance of disseminated similar but smaller lesions one or two weeks later. Several patients develop systemic symptoms such as nausea, anorexia, malaise, headache, fever, arthralgia, and lymphadenopathy that may precede or accompany the eruption; the latter follows the cleavage lines of the trunk creating the configuration of a Christmas tree and spontaneously resolves within 4 to 8 weeks...
December 2016: Acta Dermatovenerologica Croatica: ADC
https://www.readbyqxmd.com/read/28125624/clonidine-versus-captopril-for-severe-postpartum-hypertension-a-randomized-controlled-trial
#12
Carlos Noronha Neto C, Sabina S B Maia, Leila Katz, Isabela C Coutinho, Alex R Souza, Melania M Amorim
BACKGROUND: Changes during the puerperium are still unclear, particularly in women with hypertension. The choice of antihypertensives, both to control very high blood pressure episodes and to keep blood pressure stable, also requires further elucidation. Currently, there are no clear data to guide the decision for the choice of postpartum antihypertensives. Captopril plays an important role in the treatment of very high blood pressure episodes and may be used postpartum. Clonidine has been used as an alternative in pregnant or postpartum women with contraindications to captopril, with satisfactory effect...
2017: PloS One
https://www.readbyqxmd.com/read/28124696/molecular-structure-of-clonidine-gas-phase-electron-diffraction-single-crystal-x-ray-diffraction-and-quantum-chemical-studies
#13
Inna N Kolesnikova, Anatolii N Rykov, Igor F Shishkov, Victor A Tafeenko, Leonid A Aslanov
This study presents the first determination of the molecular structure of the antihypertensive drug clonidine in the gas phase using gas electron diffraction (GED). The refinement was supported by quantum chemical calculations (QCs). The tautomeric and conformational distribution was investigated theoretically, providing an explanation for the presence of the single conformer in the gas phase. The molecular conformation of clonidine has been shown to have a nearly perpendicular arrangement of the phenyl and imidazolidine rings as described by the torsion angle C2-N6-C7-C8 = -72(6)°...
January 26, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28122088/preventing-corneal-calcification-associated-with-xylazine-for-longitudinal-optical-coherence-tomography-in-young-rodents
#14
Tianwei Ellen Zhou, Diane N Sayah, Baraa Noueihed, Javier Mazzaferri, Santiago Costantino, Isabelle Brunette, Sylvain Chemtob
Purpose: Spectral-domain optical coherence tomography (SD-OCT) is widely used in clinical ophthalmology and recently gained popularity in laboratory research involving small rodents. Its noninvasive nature allows repeated measurements, thereby decreasing the number of animals required. However, when used at a conventional dosage, xylazine (an α2-adrenoceptor) can cause irreversible corneal calcification, especially among young rodents. In the present study, we test whether corneal calcification associated with xylazine is mediated by the α2-adrenoceptor...
January 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28120104/adjuncts-to-local-anaesthetics-in-tonsillectomy-a-systematic-review-and-meta-analysis
#15
REVIEW
R Vlok, T M Melhuish, C Chong, T Ryan, Leigh D White
The infiltration of local anaesthetic agents has been shown to reduce post-tonsillectomy pain. A number of recent studies have shown that the addition of agents such as clonidine and dexamethasone improve the efficacy of nerve blocks and spinal anaesthesia. The aim of this review was to determine whether additives to local anaesthetic agents improve post-tonsillectomy outcomes. Four major databases were systematically searched for all relevant studies published up to August 2016. All study designs with a control group receiving local anaesthetic infiltration and an intervention receiving the same infiltration with an added agent were included in this review...
January 24, 2017: Journal of Anesthesia
https://www.readbyqxmd.com/read/28115640/clonidine-induces-apoptosis-of-human-corneal-epithelial-cells-through-death-receptors-mediated-mitochondria-dependent-signaling-pathway
#16
Dan Fan, Ting-Jun Fan
Clonidine, an α2-adrenoreceptor agonist, is an anti-glaucoma drug clinically used in many developing countries, and its abuse might damage the cornea and impair human vision. However, its cytotoxicity and precise mechanisms need to be elucidated. Herein, we investigated the cytotoxicity of clonidine and its underlying mechanisms, using an in vitro model of human corneal epithelial (HCEP) cells and an in vivo model of cat corneas, respectively. HCEP cells were treated with various doses of clonidine for 1-28 h, resulting in abnormal morphology, decline of cell viability and G1 phase arrest in a time- and/or dose- dependent manner...
January 23, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28107093/adult-clonidine-overdose-prolonged-bradycardia-and-central-nervous-system-depression-but-not-severe-toxicity
#17
Geoffrey K Isbister, Simon P Heppell, Colin B Page, Nicole M Ryan
CONTEXT: There are limited reports of adult clonidine overdose. We aimed to describe the clinical effects and treatment of clonidine overdose in adults. METHODS: This was a retrospective review of a prospective cohort of poisoned patients who took clonidine overdoses (>200 μg). Demographic information, clinical effects, treatment, complications (central nervous system and cardiovascular effects) and length of stay (LOS) were extracted from a clinical database or medical records...
March 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28096583/addition-of-clonidine-to-bupivacaine-in-transversus-abdominis-plane-block-prolongs-postoperative-analgesia-after-cesarean-section
#18
Ranju Singh, Nishant Kumar, Aruna Jain, Sudipta Joy
BACKGROUND AND AIMS: The aim was to compare duration of postoperative analgesia with addition of clonidine to bupivacaine in bilateral transversus abdominis plane (TAP) block after lower segment cesarean section (LSCS). MATERIAL AND METHODS: One hundred American Society of Anesthesiologists (ASA) grade I and II pregnant patients undergoing LSCS under spinal anesthesia were randomly divided to receive either 20 ml bupivacaine 0.25% (Group B; n = 50) or 20 ml bupivacaine+1ug/kg clonidine bilaterally (Group BC; n = 50) in TAP block in a double-blind fashion...
October 2016: Journal of Anaesthesiology, Clinical Pharmacology
https://www.readbyqxmd.com/read/28094445/presynaptic-inhibition-of-transient-receptor-potential-vanilloid-type-1-trpv1-receptors-by-norepinephrine-in-nociceptive-neurons
#19
Saikat Chakraborty, Vincent Elvezio, Martin Kaczocha, Mario Rebecchi, Michelino Puopolo
The transient receptor potential vanilloid type 1 (TRPV1) receptor is a well-known contributor to nociceptor excitability. To address whether norepinephrine can down-regulate TRPV1 channel activity in nociceptors and reduce their synaptic transmission, the effects of norepinephrine and clonidine were tested on the capsaicin-activated current recorded from acutely dissociated small diameter (<27 μm) dorsal root ganglia (DRG) neurons and on miniature excitatory postsynaptic currents (mEPSCs) recorded from large lamina I neurons in horizontal spinal cord slices...
January 17, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28093070/clonidine-is-effective-for-the-treatment-of-primary-idiopathic-hyperhidrosis-and-hot-flushes-a-case-report
#20
Ahmed Albadrani
BACKGROUND: While primary hyperhidrosis can be seen in men, accompanying hot flushes is rarely seen in men. Primary hyperhidrosis is thought to be related to overactivity of the sympathetic nervous system while hot flushes are believed to be related to altered peripheral vascular reactivity and a narrowed thermoregulatory zone. CASE PRESENTATION: I report the case of a 29-year-old man of Arab origin who presented to a dermatology clinic with a complaint of generalized sweating, with heavier involvement of his inguinal region, axilla, and lower back...
January 17, 2017: Journal of Medical Case Reports
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