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Peripherally selective drug

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Peripherally selective drugs have their primary mechanism of action outside of the central nervous system (CNS), usually because they are excluded from the CNS by the blood–brain barrier. By being excluded from the CNS, drugs may act on the rest of the body without producing side-effects related to their effects on the brain or spinal cord. For example, most opioids cause sedation when given at a sufficiently high dose, but peripherally selective opioids can act on the rest of the body without entering the brain and are less likely to cause sedation.[1] These peripherally selective opioids can be used as antidiarrheals, for instance loperamide (Imodium).[2]

Mechanisms of peripheral selectivity include physicochemical hydrophilicity and large molecular size, which prevent drug permeation through the lipid bilayer cell membranes of the blood–brain barrier, and efflux out of the brain by blood–brain barrier transporters such as P-glycoprotein among many others.[2][3][4] Transport out of the brain by P-glycoprotein is thought to be responsible for the peripheral selectivity of many drugs, including loperamide, domperidone, fexofenadine, bilastine, cetirizine, ivermectin, and dexamethasone, among others.[2][5][6][7][8]

List of peripherally selective drugs

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References

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  1. ^ Stein, C; Zöllner, C (2009). "Opioids and Sensory Nerves". Sensory Nerves. Handbook of Experimental Pharmacology. Vol. 194. pp. 495–518. doi:10.1007/978-3-540-79090-7_14. ISBN 978-3-540-79089-1. PMID 19655116.
  2. ^ a b c Schinkel AH (April 1999). "P-Glycoprotein, a gatekeeper in the blood-brain barrier". Adv Drug Deliv Rev. 36 (2–3): 179–194. doi:10.1016/s0169-409x(98)00085-4. PMID 10837715.
  3. ^ Dyrna F, Hanske S, Krueger M, Bechmann I (September 2013). "The blood-brain barrier". J Neuroimmune Pharmacol. 8 (4): 763–73. doi:10.1007/s11481-013-9473-5. PMID 23740386. S2CID 255272031.
  4. ^ Terasaki T, Ohtsuki S (January 2005). "Brain-to-blood transporters for endogenous substrates and xenobiotics at the blood-brain barrier: an overview of biology and methodology". NeuroRx. 2 (1): 63–72. doi:10.1602/neurorx.2.1.63. PMC 539321. PMID 15717058.
  5. ^ Schinkel AH, Wagenaar E, Mol CA, van Deemter L (June 1996). "P-glycoprotein in the blood-brain barrier of mice influences the brain penetration and pharmacological activity of many drugs". J Clin Invest. 97 (11): 2517–24. doi:10.1172/JCI118699. PMC 507337. PMID 8647944.
  6. ^ De Kloet ER (October 1997). "Why Dexamethasone Poorly Penetrates in Brain". Stress. 2 (1): 13–20. doi:10.3109/10253899709014734. PMID 9787252.
  7. ^ Church, Martin K. (2021). "Antihistamines". Urticaria and Angioedema. Springer International Publishing. pp. 153–165. doi:10.1007/978-3-030-84574-2_11. ISBN 978-3-030-84573-5. S2CID 239944965.
  8. ^ Hu Y, Sieck DE, Hsu WH (October 2015). "Why are second-generation H1-antihistamines minimally sedating?". Eur J Pharmacol. 765: 100–6. doi:10.1016/j.ejphar.2015.08.016. PMID 26291661.
  9. ^ Habet S (August 2022). "Clinical Pharmacology of Entacapone (Comtan) From the FDA Reviewer". Int J Neuropsychopharmacol. 25 (7): 567–575. doi:10.1093/ijnp/pyac021. PMC 9352175. PMID 35302623. Entacapone is a potent and specific peripheral catechol-O-methyltransferase inhibitor. [...] Entacapone has no antiparkinsonian activity as a sole agent. Therefore, it must be given as an adjunct to LD and a peripherally acting DDC inhibitor, such as carbidopa. Entacapone acts peripherally and does not penetrate the blood-brain barrier (BBB). [...] It is poorly lipophilic and does not penetrate the BBB to any significant extent. Its clinical effects are thus due to peripheral COMT inhibition only (Nutt, 1998; Fahn et al, 2004). [...] Entacapone is poorly lipophilic. Therefore, its clinical effects are due to peripheral COMT inhibition alone. [...] Entacapone is a potent, specific, and reversible COMT inhibitor. The drug has been shown to act peripherally, but not centrally, when given at clinically effective doses.
  10. ^ Canal CE (2018). "Serotonergic Psychedelics: Experimental Approaches for Assessing Mechanisms of Action". Handb Exp Pharmacol. 252: 227–260. doi:10.1007/164_2018_107. PMC 6136989. PMID 29532180.
  11. ^ Verhoeff NP, Visser WH, Ferrari MD, Saxena PR, van Royen EA (October 1993). "Dopamine D2-receptor imaging with 123I-iodobenzamide SPECT in migraine patients abusing ergotamine: does ergotamine cross the blood brain barrier?". Cephalalgia. 13 (5): 325–329. doi:10.1046/j.1468-2982.1993.1305325.x. PMID 8242725.
  12. ^ Fabbri M, Rosa MM, Ferreira JJ (October 2016). "Clinical pharmacology review of opicapone for the treatment of Parkinson's disease". Neurodegener Dis Manag. 6 (5): 349–62. doi:10.2217/nmt-2016-0022. PMID 27599671. Opicapone (OPC) is a novel, long-acting, peripherally selective, once daily, third-generation catechol-O-methyl transferase inhibitor.
  13. ^ Keating GM, Lyseng-Williamson KA (2005). "Tolcapone: a review of its use in the management of Parkinson's disease". CNS Drugs. 19 (2): 165–184. doi:10.2165/00023210-200519020-00006. PMID 15697329. The efficacy of tolcapone as an adjunct to levodopa in patients with Parkinson's disease has primarily been attributed to its ability to inhibit peripheral it is thought that tolcapone enters the CNS to a minimal extent only.[16] However, results [17] of a study in patients with Parkinson's disease, as well as results of animal studies,[18-21] suggest that tolcapone also has central activity.
  14. ^ Gillman PK (November 2018). "A reassessment of the safety profile of monoamine oxidase inhibitors: elucidating tired old tyramine myths". J Neural Transm (Vienna). 125 (11): 1707–1717. doi:10.1007/s00702-018-1932-y. PMID 30255284.
  15. ^ Rothman RB, Baumann MH (October 2003). "Monoamine transporters and psychostimulant drugs". Eur J Pharmacol. 479 (1–3): 23–40. doi:10.1016/j.ejphar.2003.08.054. PMID 14612135.
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