DEXTROMETORFANO MECANISMO DE ACCION PDF

Tiene dos mecanismos de acción, unión de un metabolito M1 a receptores μ- opioides e inhibición débil Su mecanismo de acción es a través de la inhibición del canal de óxido nítrico y mediado Bromhidrato de dextrometorfano mg. El dextrometorfano es un antitusígeno no opioide y un bloqueante no competitivo de los .. Sus mecanismos de acción están mediados por la interacción con. mg Dextrometorfano HBR (Descongestionante). MECANISMO DE ACCION: Sulfabol Crema Contiene un esteroide anablico.

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Neira F, Ortega JL. NMDA glutamatergic receptor antagonists for the management of chronic pain. Rev Soc Esp Dolor ; NMDA receptors are associated to learning and memory processes, development and neural plasticity, as well as acute and chronic pain conditions.

They are involved in the outset and maintenance of central sensitization associated to damage or inflammation of peripheral tissues.

Glutamate is the main amino acid that stimulates the CNS, can be involved in nociceptive transmission processes at the spine level and is the main responsible for the fast synaptic transmission. Glutamate and its agonists NMDA, AMPA or kainic acid are involved in the generation and maintenance of hyperalgesia conditions exacerbated response to noxious stimulus and alodynia decrease of pain threshold.

The clinical effectiveness of NMDA receptor antagonists ketamine, memantine, amantadine, dextromethorphan, methadone is analyzed. Their potential indications include: The effectiveness of ketamine when orally or parenterally administered has been studied in central dysesthesic pain, neuropathic pain in the traumatic cauda equina syndrome, alodynia and hyperalgesia. Dextromethorphan is a non-opiate antitussive and a non-competitive blocker of NMDA receptors. One of its indications is the management of diabetic neuropathy.

Methadone binds mainly to opiate receptors mu, but it is also a non-competitive antagonist of NMDA receptors. The use of methadone improves the management of pain since it reduces the development of tolerance to opiates. Memantine is a non-competitive antagonist of NMDA receptors.

It mecansmo the intracortical activation and increases the intracortical inhibition. Experimentally, it has shown antinociceptive effects during the phase secondary to the inflammation induced by the formaline test.

It reduces the thermal and mechanical hyperalgesia. NMDA receptor antagonists open new perspectives for the management of neuropathic pain. These drugs are frequently combined with other analgesics, generally acting as coadjuvants. The disparate results obtained with different antagonists used for the same indication confirm the complexity of their mechanism of action, mecanosmo is not limited to antagonism of NMDA receptors, but it goes much more beyond that.

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Entre sus posibles indicaciones se encuentran: La memantina es un antagonista no competitivo de los receptores NMDA. Hospital Universitario de Puerto Real.

Ello conlleva tratar el dolor cuando se presenta. La glicina tiene un efecto facilitador dextgometorfano los receptores NMDA Entre sus indicaciones se han propuesto: Se debe tener en cuenta su efecto de primer paso. Entre las complicaciones de su uso prolongado se encuentran: Faltan datos sobre el tratamiento de la ketamina a largo plazo.

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La ketamina intravenosa 0,50 mg. No obstante se deben tener presentes los efectos indeseables centrales, especialmente a dosis altas, que pueden limitar su uso Requiere dosis elevadas de mantenimiento mg.

Motivo que hace se cuestione su utilidad en el tratamiento del dolor visceral Tiene una larga vida media horas. Es un derivado de la amantadina, que se utiliza habitualmente en el tratamiento de la enfermedad de Parkinson y el Alzheimer desde Entre sus efectos adversos se encuentran: La ketamina disminuye el dolor continuo y el evocado con pocos efectos secundarios. Se describe el alivio del dolor complejo mediante ketamina epidural en pacientes con dolor refractario a otros tratamientos nivel de evidencia IV La ketamina incrementa la resistencia y reduce la intensidad del dolor.

No obstante hay estudios con resultados contrapuestos. Las exacerbaciones severas del dolor e hiperalgesia, en pacientes tratados con dosis elevadas de morfina intratecal, se pueden controlar con ketamina intravenosa a 10 mg. La memantina a una dosis de 20 mg. Sin embargo, a una dosis de 30 mg. El dextrometorfano mg. Etiopatogenia y efectos funcionales del dolor postoperatorio.

Antagonistas de los receptores glutamatérgicos NMDA en el tratamiento del dolor crónico

Tratamiento del dolor postoperatorio. Ediciones Ergon SA, McGraw-Hill Interamericana ; 2: Secretos del tratamiento de dolor. Dzoljic M, Gelb AW. Eur J Anaesth ; 14 Supl.

Lipkowski AW, Maszczynska I. Peptide, N-methyl-D-aspartate and adenosine receptors as analgesic targets. Current Op Anaesth ; 9: N-methyl-D-aspartate receptors and pain. Current Op Anaesth ; 8: JB Lippincott Company, Talk, nerve blocks, and exercise: Annual Refresher Course Lectures, october San Francisco ; Katz N, Ferrante FM.

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A cure for wind-up: NMDA receptor antagonists as potential analgesics. Trends Pharmacol Sci ; Modulation of spinal excitability: Trends Neurosci ; Spinal mechanisms underlying persistent pain and referred hyperalgesia in rats with an experimental uretic stone.

J Neurophysiol ; 79 4: Nucleus reticularis gigantocellularis and nucleus raphe magnus in the brain stem exert opposite effects on behavioral hyperalgesia and spinal Fos protein expresion after peripheral inflammation. Dolor ; 13 Supl. Novelli GP, Trovati F.

Gabapentin and neuropathic pain. The Pain Clinic ; fextrometorfano 1: Spinal neurokinin NK1 receptor down-regulation and antinociception: J Neurochem ; 70 2: Spinal mechanisms of acute and persistent pain.

Reg Anesth Pain Med ; 24,1: Spinal neurokin3 receptors facilitate the nociceptive flexor reflex via a pathway involving nitric oxide. Spinal neurokinin3 receptors mediate thermal but not mechanical hyperalgesia via nitric oxide. Distribution of Fos-like immunoreactivity in the caudal medullary reticular formation following noxious facial stimulation in the rat.

Exp Brain Res ; Anatomical properties of brainstem trigeminal neurons that respond to electrical stimulation of dural blood vessels. J Comp Neurol ; Somatotopic and laminar organization of fos-like immunoreactivity in the medullary and upper cervical dorsal horn induced by noxious facial stimulation in the mecaniamo. The NMDA receptor antagonist MK reduces capsaicin-induced c-fos expression within rat trigeminal nucleus caudalis.

Differential effects of intrathecally administered delta and mu opioid receptor agonists on formalin-evoked nociception and on the expression of Fos-like immunoreactivity in the spinal cord of the df. J Pharmacol Exp Ther ; Figiel I, Kaczmarek L. Cellular and molecular correlates of glutamate-evoked dextrometorfno programmed cell death in the in vitro cultures of sccion hippocampal dentate gyrus.

Neurochem Int ; The NMDA receptor mediates cortical induction of fos and fos-related antigens following cortical injury. Exp Neurol ; Battaglia G, Rustioni A. Coexistence of glutamate and substance P in dorsal root ganglion neurons of the rat and monkey.

Interactions between substance P, calcitonin gene-related peptide, taurine and excitatory amino acids in the spinal cord. Baranauskas G, Nistri A. Sensitization of pain pathways in the spinal cord: Prog Neurobiol ;