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Nisoxetine produces local but not systemic analgesia against cutaneous nociceptive stimuli in the rat. 2012

Yu-Wen Chen, and Chin-Chen Chu, and Yu-Chung Chen, and Jhi-Joung Wang, and Ching-Hsia Hung, and Dong-Zi Shao
Department of Physical Therapy, China Medical University, Taichung, Taiwan.

The aim of this study was to evaluate the local anesthetic effect of nisoxetine as infiltrative cutaneous analgesic. After rats were injected subcutaneously with nisoxetine, dose-response curves were constructed. The cutaneous anesthetic effect of nisoxetine or MK-801 (dizocilpine) was compared with lidocaine, a traditional local anesthetic. We found that nisoxetine and MK-801 acted like lidocaine and elicited dose-related cutaneous (local) anesthesia. The relative potency was nisoxetine>MK-801>lidocaine (P<0.01) as infiltrative anesthesia of skin. On an equianesthetic doses (20% effective dose [ED₂₀], ED₅₀, and ED₈₀), nisoxetine produced longer action of cutaneous anesthesia than that of lidocaine or MK-801 (P<0.01). Coadministration of nisoxetine or lidocaine with MK-801 showed an additive cutaneous anesthesia. Neither local injection of a large dose of nisoxetine, MK-801 nor lidocaine in the thigh area produced cutaneous anesthesia (data not shown). In conclusion, nisoxetine had a local anesthetic effect as infiltrative cutaneous analgesia with durations of actions longer than that of lidocaine or MK-801. That N-methyl-d-aspartate receptors may not contribute to the cutaneous (local) anesthetic effect of nisoxetine or lidocaine.

UI MeSH Term Description Entries
D007279 Injections, Subcutaneous Forceful administration under the skin of liquid medication, nutrient, or other fluid through a hollow needle piercing the skin. Subcutaneous Injections,Injection, Subcutaneous,Subcutaneous Injection
D007700 Kinetics The rate dynamics in chemical or physical systems.
D008297 Male Males
D009638 Norepinephrine Precursor of epinephrine that is secreted by the ADRENAL MEDULLA and is a widespread central and autonomic neurotransmitter. Norepinephrine is the principal transmitter of most postganglionic sympathetic fibers, and of the diffuse projection system in the brain that arises from the LOCUS CERULEUS. It is also found in plants and is used pharmacologically as a sympathomimetic. Levarterenol,Levonorepinephrine,Noradrenaline,Arterenol,Levonor,Levophed,Levophed Bitartrate,Noradrenaline Bitartrate,Noradrénaline tartrate renaudin,Norepinephrin d-Tartrate (1:1),Norepinephrine Bitartrate,Norepinephrine Hydrochloride,Norepinephrine Hydrochloride, (+)-Isomer,Norepinephrine Hydrochloride, (+,-)-Isomer,Norepinephrine d-Tartrate (1:1),Norepinephrine l-Tartrate (1:1),Norepinephrine l-Tartrate (1:1), (+,-)-Isomer,Norepinephrine l-Tartrate (1:1), Monohydrate,Norepinephrine l-Tartrate (1:1), Monohydrate, (+)-Isomer,Norepinephrine l-Tartrate (1:2),Norepinephrine l-Tartrate, (+)-Isomer,Norepinephrine, (+)-Isomer,Norepinephrine, (+,-)-Isomer
D012018 Reflex An involuntary movement or exercise of function in a part, excited in response to a stimulus applied to the periphery and transmitted to the brain or spinal cord.
D004058 Diffusion The tendency of a gas or solute to pass from a point of higher pressure or concentration to a point of lower pressure or concentration and to distribute itself throughout the available space. Diffusion, especially FACILITATED DIFFUSION, is a major mechanism of BIOLOGICAL TRANSPORT. Diffusions
D004305 Dose-Response Relationship, Drug The relationship between the dose of an administered drug and the response of the organism to the drug. Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D004359 Drug Therapy, Combination Therapy with two or more separate preparations given for a combined effect. Combination Chemotherapy,Polychemotherapy,Chemotherapy, Combination,Combination Drug Therapy,Drug Polytherapy,Therapy, Combination Drug,Chemotherapies, Combination,Combination Chemotherapies,Combination Drug Therapies,Drug Polytherapies,Drug Therapies, Combination,Polychemotherapies,Polytherapies, Drug,Polytherapy, Drug,Therapies, Combination Drug
D005473 Fluoxetine The first highly specific serotonin uptake inhibitor. It is used as an antidepressant and often has a more acceptable side-effects profile than traditional antidepressants. Fluoxetin,Fluoxetine Hydrochloride,Lilly-110140,N-Methyl-gamma-(4-(trifluoromethyl)phenoxy)benzenepropanamine,Prozac,Sarafem,Lilly 110140,Lilly110140
D000779 Anesthetics, Local Drugs that block nerve conduction when applied locally to nerve tissue in appropriate concentrations. They act on any part of the nervous system and on every type of nerve fiber. In contact with a nerve trunk, these anesthetics can cause both sensory and motor paralysis in the innervated area. Their action is completely reversible. (From Gilman AG, et. al., Goodman and Gilman's The Pharmacological Basis of Therapeutics, 8th ed) Nearly all local anesthetics act by reducing the tendency of voltage-dependent sodium channels to activate. Anesthetics, Conduction-Blocking,Conduction-Blocking Anesthetics,Local Anesthetic,Anesthetics, Topical,Anesthetic, Local,Anesthetics, Conduction Blocking,Conduction Blocking Anesthetics,Local Anesthetics,Topical Anesthetics

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