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https://www.readbyqxmd.com/read/29452108/effect-of-brimonidine-an-%C3%AE-2-adrenergic-agonist-on-human-meibomian-gland-epithelial-cells
#1
Xi Han, Yang Liu, Wendy R Kam, David A Sullivan
We recently discovered that the anti-glaucoma pharmaceuticals timolol, a β adrenergic antagonist, and pilocarpine, a cholinergic compound, negatively influence the morphology, proliferative capacity and survival of human meibomian gland epithelial cells (HMGECs). We hypothesize that another class of anti-glaucoma drugs, the α2 adrenergic agonists, also acts directly on HMGECs to affect their structure and function. We tested this hypothesis. Immortalized (i) HMGECs were cultured with brimonidine, as well as clonidine (α2 agonist), phenylephrine (α1 agonist), RX821002 (inverse α2 agonist) and MK912 (neutral α2 agonist) for up to 7 days...
February 13, 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29452086/ameliorative-effects-of-clonidine-on-ethanol-induced-kidney-injury-in-rats-potential-role-for-imidazoline-1-receptor
#2
Nesreen M I M Elkomy, Islam A A E-H Ibrahim, Shimaa M Elshazly, Hassan M El-Fayoumi
Chronic alcoholism is a risk factor for kidney injury. Clonidine is an α 2 -adrenergic receptor/imidazoline-1 receptor agonist that can reduce blood pressure and maintain renal functions. This study aims to investigate the possible ameliorative effects of clonidine on ethanol induced kidney injury and its mechanism of action. Kidney injury was induced in rats by adding ethanol to drinking water for eight weeks. Clonidine effects on kidney functions and histopathology were measured. Moreover, phentolamine (α-adrenergic receptor antagonist), efaroxan (imidazoline-1 receptor antagonist) and rilmenidine (imidazoline-1 receptor agonist) were used to clarify the role of imidazoline-1 receptor in mediating renal ameliorative effects...
February 13, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29451226/final-adult-height-and-endocrine-complications-in-young-adults-with-%C3%AE-thalassemia-major-tm-who-received-oral-iron-chelation-oic-in-comparison-with-those-who-did-not-use-oic
#3
Ashraf T Soliman, Mohamed A Yassin, Vincenzo De Sanctis
BACKGROUND: Relatively little is known about endocrine function, bone mineral health, and growth during oral iron chelation therapy in β-thalassemia major patients (TM) on treatment with deferasirox. AIMS OF THE STUDY: To study the frequency of endocrine complications, IGF-1 levels and final adult standing height (FA-Ht) in patients with BTM in two groups of adult patients. PATIENTS AND METHODS: The first group (Group A; 15 patients, 6 females and 9 males) received oral iron chelation therapy (OIC) with deferasirox for 6 years before puberty; the second group (Group B;40 patients) attained the FA-Ht before the use of OIC (iron chelation therapy with deferoxamine (DFO) given subcutaneously, since the age of 2 years)...
February 16, 2018: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/29438648/managing-menopausal-symptoms-after-cancer-an-evidence-based-approach-for-primary-care
#4
Jennifer L Marino, Helen C McNamara, Martha Hickey
Impaired ovarian function and menopausal symptoms are common after cancer treatment. Menopausal symptoms often occur at an earlier age in women with cancer, and may be more severe than in natural menopause; they may be the most persistent and troubling sequelae of cancer. A third of female patients with cancer report dissatisfaction with the quality and length of physician-patient discussions about reproductive health, including menopause. Systemic menopausal hormone therapy is the most effective treatment for menopausal symptoms, but it is not suitable for all patients after cancer - where it is unsuitable, alternative effective non-hormonal treatments are available...
February 19, 2018: Medical Journal of Australia
https://www.readbyqxmd.com/read/29433586/a-case-report-of-clonidine-induced-syncope-a-review-of-central-actions-of-an-old-cardiovascular-drug
#5
Alexander J Sandweiss, Christopher M Morrison, Anne Spichler, John Rozich
BACKGROUND: Clonidine is an imidazoline sympatholytic, acting on both α 2 -adrenergic and imidazoline receptors in the brainstem to induce antihypertensive and negative chronotropic effects in the vasculature and heart respectively. CASE PRESENTATION: A 69-year-old gentleman with hypertension presented to the emergency department after multiple syncopal episodes over the past 12 months. Electrocardiogram demonstrated sinus bradycardia with a heart rate of 42 beats per minute...
February 13, 2018: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/29428470/dsp-6952-a-novel-5-ht4-receptor-partial-agonist-inhibits-visceral-hypersensitivity-and-ameliorates-gastrointestinal-dysfunction-in-experimental-animals
#6
Yukiko Mine, Tomohiro Itakura, Seiko Oku, Reiko Asada, Isao Shimizu
The pharmacological profile of DSP-6952, a novel 5-HT4 receptor partial agonist, was investigated to evaluate the potential use for GI disorders, and to compare its effects in some GI dysfunction models with those of clinically efficacious prokinetic agents. DSP-6952 enhanced gastric motility and caused colonic giant migrating contractions (GMCs) associated with defecation in conscious dogs, having ED50 value for inducing GMCs of 1.56mg/kg. DSP-6952 (3-10mg/kg, i.g.) significantly enhanced colonic transit rate in guinea pigs; this enhancement was antagonized by SB-207266, a selective 5-HT4 receptor antagonist...
February 8, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29422931/treatment-of-children-and-adolescents-with-attention-deficit-hyperactivity-disorder-and-or-tourette-s-disorder-with-clonidine-extended-release
#7
Sung Woo Joo, Hyo-Won Kim
We aimed to assess the effectiveness and safety of clonidine extended release (ER) treatment in Korean youth with ADHD and/or Tourette's disorder. We retrospectively reviewed the medical records of 29 children and adolescents treated with clonidine ER. The effectiveness were retrospectively measured at baseline and after 4 and 12 weeks based on the Clinical Global Impression-Severity (CGI-S) and Clinical Global Impression-Improvement (CGI-I) scores. Safety was evaluated at each visit based on spontaneous reports from the subjects or from their parents/guardians...
January 2018: Psychiatry Investigation
https://www.readbyqxmd.com/read/29416372/effect-of-bupivacaine-and-adjuvant-drugs-for-regional-anesthesia-on-nerve-tissue-oximetry-and-nerve-blood-flow
#8
Thomas Wiesmann, Stefan Müller, Hans-Helge Müller, Hinnerk Wulf, Thorsten Steinfeldt
Background: Nerve blood flow has a critical role in acute and chronic pathologies in peripheral nerves. Influences of local anesthetics and adjuvants on tissue perfusion and oxygenation are deemed as relevant factors for nerve damage after peripheral regional anesthesia. The link between low tissue perfusion due to local anesthetics and resulting tissue oxygenation is unclear. Methods: Combined tissue spectrophotometry and laser-Doppler flowmetry were used to assess nerve blood flow in 40 surgically exposed median nerves in pigs, as well as nerve tissue oximetry for 60 min...
2018: Journal of Pain Research
https://www.readbyqxmd.com/read/29415813/advances-in-behavioral-psychopharmacology
#9
REVIEW
Leslie Sinn
Recent studies have led to some groundbreaking findings regarding the use of medications for the support of behavioral health in dogs and cats. Despite tantalizing results, these studies should be viewed in light of their limitations. Consequently, the results of these studies should be applied in the clinical setting with caution and with a full understanding of the potential pros and cons of using these medications. A review of the research available on trazodone, clonidine, detomidine, dexmedetomidine, propranolol, pindolol, maropitant, memantine, venlafaxine, and gabapentin discusses these pros and cons and highlights key points regarding their clinical use and application...
February 5, 2018: Veterinary Clinics of North America. Small Animal Practice
https://www.readbyqxmd.com/read/29412390/growth-hormone-deficiency-with-advanced-bone-age-phenotypic-interaction-between-ghrh-receptor-and-cyp21a2-mutations-diagnosed-by-sanger-and-whole-exome-sequencing
#10
Fernanda A Correa, Marcela M França, Qing Fang, Qianyi Ma, Tania A Bachega, Andresa Rodrigues, Bilge A Ozel, Jun Z Li, Berenice B Mendonca, Alexander A L Jorge, Luciani R Carvalho, Sally A Camper, Ivo J P Arnhold
Isolated growth hormone deficiency (IGHD) is the most common pituitary hormone deficiency and, clinically, patients have delayed bone age. High sequence similarity between CYP21A2 gene and CYP21A1P pseudogene poses difficulties for exome sequencing interpretation. A 7.5 year-old boy born to second-degree cousins presented with severe short stature (height SDS -3.7) and bone age of 6 years. Clonidine and combined pituitary stimulation tests revealed GH deficiency. Pituitary MRI was normal. The patient was successfully treated with rGH...
December 2017: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29411149/pharmacological-treatment-of-attention-deficit-hyperactivity-disorder-during-pregnancy-and-lactation
#11
REVIEW
Asher Ornoy
INTRODUCTION: Attention deficit/hyperactivity disorder (ADHD) is a neurobehavioral problem found in 2-5% of adults. Stimulants and drugs that affect the dopaminergic, noradrenergic and/or serotonergic systems are effective treatment and are increasingly prescribed to women at child bearing age. It is consequently important that reliable information on the safety of these drugs in pregnancy is available so that appropriate therapeutic choices can be made. RESULTS: The data on stimulants (methylphenidate and amphetamines) are generally showing that there is no increase in the rate of major congenital anomalies...
February 6, 2018: Pharmaceutical Research
https://www.readbyqxmd.com/read/29406172/the-impact-of-neuraxial-clonidine-on-postoperative-analgesia-and-perioperative-adverse-effects-in-women-having-elective-caesarean-section-a-systematic-review-and-meta-analysis
#12
REVIEW
T K Allen, B M Mishriky, R Y Klinger, A S Habib
Neuraxial clonidine improves postoperative analgesia in the general surgical population. The efficacy and safety of neuraxial clonidine as a postoperative analgesic adjunct in the Caesarean section population still remains unclear. This systematic review and meta-analysis aims to evaluate the effect of perioperative neuraxial clonidine on postoperative analgesia in women having Caesarean section under neuraxial anaesthesia. We included randomized controlled trials comparing the analgesic efficacy of the perioperative administration of neuraxial clonidine alone or in combination with a local anaesthetic and/or opioids in women having elective Caesarean section under neuraxial anaesthesia when compared with placebo...
February 2018: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29405267/pharmacological-and-neurosurgical-interventions-for-managing-dystonia-in-cerebral-palsy-a-systematic-review
#13
Darcy Fehlings, Leah Brown, Adrienne Harvey, Kate Himmelmann, Jean-Pierre Lin, Alexander Macintosh, Jonathan W Mink, Elegast Monbaliu, James Rice, Jessica Silver, Lauren Switzer, Ilana Walters
AIM: To systematically review evidence for pharmacological/neurosurgical interventions for managing dystonia in individuals with cerebral palsy (CP) to inform a care pathway. METHOD: Searches included studies with a minimum of five participants with dystonia in CP receiving oral baclofen, benzodiazepines (clonazepam, diazepam, lorazepam), clonidine, gabapentin, levodopa, trihexyphenidyl, botulinum toxin, intrathecal baclofen (ITB), or deep brain stimulation (DBS)...
February 6, 2018: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/29375986/safety-threshold-of-intravitreal-clonidine-in-rabbit-s-eyes
#14
Homayoun Nikkhah, Kiumars Heidari Garfami, Mozhgan Rezaei Kanavi, Ebrahim Mohammad Nashtaei, Saeed Karimi, Masoud Soheilian
AIM: To determine the safe dose of intravitreal clonidine (IVC), a potential drug for neuroprotection and angiogenesis inhibition in rabbits. METHODS: A total of 28 rabbits were divided into four groups. Three groups received IVC with concentrations of 15 (Group A), 25 (Group B), and 50 (Group C) µg/0.1 mL and the control group (Group D) received 0.1 mL balanced salt solution (BSS). To investigate IVC safety, electroretinography (ERG) was performed at baseline, then at 1, 4 and 8wk after injection...
2018: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/29371190/minimizing-opioid-use-after-acute-major-trauma
#15
Douglas Oyler, Andrew C Bernard, Jeremy D VanHoose, Sara E Parli, C Scott Ellis, David Li, Levi D Procter, Phillip K Chang
PURPOSE: Results of an initiative at an academic medical center to reduce prescription opioid use in patients with acute traumatic injuries are reported. METHODS: In 2014, the University of Kentucky Hospital trauma service implemented a pain management strategy consisting of patient and provider education emphasizing the use of nonopioid analgesics to minimize opioid use without compromising analgesia effectiveness. To assess the impact of the initiative, a retrospective analysis of data on cohorts of patients admitted with acute trauma before (n = 489) and after (n = 424) project implementation was conducted...
February 1, 2018: American Journal of Health-system Pharmacy: AJHP
https://www.readbyqxmd.com/read/29364538/clonidine-as-a-preoperative-sedative
#16
Robert G Henry, Ted P Raybould, Kelli Romond, Dimitrios E Kouzoukas, Sandra D Challman
The purpose of this study was to -examine the use of oral clonidine as a preoperative sedative prior to parenteral moderate sedation. Initially, four patients were given 0.2 mg oral clonidine but reduced to 0.1 mg clonidine due to -significant drops in blood pressure. Oral clonidine doses of 0.1 mg were then given to 19 patients preoperatively. In all these patients, blood pressure measurements decreased, but there were no significant differences in amounts of sedative agents needed in the clonidine group and the control group (N = 80)...
January 24, 2018: Special Care in Dentistry
https://www.readbyqxmd.com/read/29352450/carrier-mediated-uptake-of-clonidine-in-cultured-human-lung-cells
#17
Marc Le Vée, Elodie Jouan, Olivier Fardel
The lung is a preferential organ site for accumulation of lipophilic basic amine drugs, so-called pneumophilic drugs and belonging to various pharmacological classes, which can result in lung toxicity. In order to investigate the mechanism involved in such pulmonary accumulation of drugs, uptake of clonidine, used here as a prototypical basic amine drug, was characterized in cultured human lung cells. Clonidine accumulation in lung alveolar A549 cells was found to be temperature- and pH-dependent; it was saturable, with a Michaelis-Menten affinity constant (Km) value of 569...
January 19, 2018: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/29341985/dexmedetomidine-as-single-continuous-sedative-during-noninvasive-ventilation-typical-usage-hemodynamic-effects-and-withdrawal
#18
Brittany L Shutes, Samantha W Gee, Cheryl L Sargel, Kelsey A Fink, Joseph D Tobias
OBJECTIVES: Dexmedetomidine use in pediatric critical care is increasing. Its prolonged effects as a single continuous agent for sedation are not well described. The aim of the current study was to describe prolonged dexmedetomidine therapy without other continuous sedation, specifically the hemodynamic effects, discontinuation strategies, and risk factors for withdrawal. DESIGN: Retrospective chart review. SETTING: Large, single-center, quaternary care pediatric academic institution...
January 16, 2018: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/29338982/involvement-of-peripheral-alpha2a-adrenoceptor-in-the-acceleration-of-gastrointestinal-transit-and-abdominal-visceral-pain-induced-by-intermittent-deprivation-of-rem-sleep
#19
Fukie Yaoita, Masamichi Muto, Hiroki Murakami, Shiori Endo, Mifuyu Kozawa, Masahiro Tsuchiya, Takeshi Tadano, Koichi Tan-No
Many studies have associated sleep alterations with the severity of irritable bowel syndrome (IBS) symptoms, but the direct pathophysiological relationship has not been clarified. In addition, alterations in noradrenergic signaling have been implicated in the pathophysiology of IBS, and alpha2-adrenoceptors are potential treatment targets. We have previously shown that acceleration of gastrointestinal transit (GIT) elicited by intermittent rapid eye movement (REM) sleep deprivation stress may fulfill the profile of a model of IBS...
January 12, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29335879/current-approaches-and-new-developments-in-the-pharmacological-management-of-tourette-syndrome
#20
REVIEW
Julio Quezada, Keith A Coffman
Tourette syndrome (TS) is a neurodevelopmental disorder of unknown etiology characterized by spontaneous, involuntary movements and vocalizations called tics. Once thought to be rare, TS affects 0.3-1% of the population. Tics can cause physical discomfort, emotional distress, social difficulties, and can interfere with education and desired activities. The pharmacologic treatment of TS is particularly challenging, as currently the genetics, neurophysiology, and neuropathology of this disorder are still largely unknown...
January 15, 2018: CNS Drugs
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