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Microsoft word - abstract-pharmacology_in_ui

Pharmacology in Urinary Incontinence
SMO, Dept. of Rehabilitation & Extended Care, TWGHs Wong Tai Sin Hospital An understanding of the neurological control and the involved neurotransmitters are important when studying the pharmacology in urinary incontinence. The bladder and urethra are controlled by the parasympathetic (S2-4), sympathetic (T10-L2) and somatic (S2-4) nerves. For the parasympathetic efferent system, the neurotransmitters include acetylcholine in the detrusor neuromuscular junction and nitric oxide in the smooth muscle urethral sphincter. The receptors on the detrusor muscle are mainly M2 (75%) and M3 (25%). For the sympathetic efferent system, the neurotransmitter is noradrenaline and the receptors are α1 at smooth muscle urethral sphincter and β3 at the detrusor muscle. For the somatic efferent system, the neurotransmitter is acetylcholine and the receptor is nicotinic at the striated muscles of urethral sphincter and pelvic floor. Neurotransmitters involved in the spinal cord and brain include acetylcholine, noradrenaline, glutamate and serotonin. Since the neurotransmitters and receptors are not specific to a tissue or organ, disturbance of the bladder control is a common side effect for many The mainstay treatment for OAB/DO is anti-muscarinic agents. They act as competitive inhibitors by blocking the M3 and M2 receptors responsible for detrusor contraction. M2 and M3 receptors are also found in the urothelium and suburothelium and anti-muscarinic agents may also play a role in suppressing the afferent pathway for DO. Anti-muscarinic agents can be divided into two groups: tertiary and quaternary amines. Tertiary amines (e.g. oxybutynin, tolterodine, solifenacin and darifenacin) are easily absorbed from the gastrointestinal tract and also readily cross the blood brain barrier which may cause cognitive impairment. They are usually metabolized by cytochrome P450 system in the liver and so have many drug-drug interactions. Quaternary amine (e.g. Trospium) are poorly absorbed from the gastrointestinal tract but would not cross blood brain barrier and so would not cause CNS side effects. They are excreted unchanged by the kidney and so very few drug interaction problems. Local treatment by intravesical instillation is an effective way to eliminate the systemic side effects but convenience and acceptability is a problem. Other drugs used for treating OAB/DO include: calcium channel blockers, potassium channel openers, β3-agonists, purinergic receptor blockers, tricyclic antidepressant, baclofen, opioids, gabapentin, prostaglandin inhibitors, botulinum toxin injection, capsaicin and Drug treatment for stress incontinence aims at increasing the urethral sphincter closure pressure and include: α1-adrenergic agonists, β-blockers, β2-agonists, tricyclic antidepressants and selective serotonin and noradrenaline reuptake inhibitors. Drug treatment for voiding dysfunctions aims at reducing the outflow resistance (α1-blockers, skeletal muscle relaxants and botulinum toxin injection into urethral sphincter) and increasing the detrusor contractility (muscarinic receptor agonists and cholinesterase inhibitors).

Source: http://www.hkcs.hk/member/2007_ASM/Abstract-Pharmacology_in_UI.pdf

Microsoft word - tylercyment.cv.6.08

Tyler Cymet, D.O. Academic Physician Medical Management and Administration Research in Disaster and Musculoskeletal Medicine 4915 Deer Park Road Owings Mills Maryland 21117 cell 443 415 3787 Professional Experience American Association of Colleges of Osteopathic Medicine June 2008-Present Associate Vice President for Medical Education Responsible for councils related to gradua

The effect of the levonorgestrel-releasing intrauterine system and the copper intrauterine device on subendometrial microvascularization and uterine artery blood flow

The effect of the levonorgestrel-releasing intrauterinesystem and the copper intrauterine device onsubendometrial microvascularization and uterineartery blood flowenez, M.D.,Elisangela Arbo, M.D.,Daniela Vetori, M.D.,Fernando Monteiro de Freitas, Ph.D.,and Jo~ao Sabino Lahorgue Cunha-Filho, Ph.D. a Programa de Pos-graduacx~ao em Medicina: Ci^encias Medicas, and b Obstetrics and Gynecology De

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