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Chou AK, Chen YW. N(Omega)-nitro-l-arginine methyl ester potentiates lidocaine analgesic and anaesthetic effect in rats. J Pharm Pharmacol 2023; 75:98-104. [PMID: 36367368 DOI: 10.1093/jpp/rgac082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 10/04/2022] [Indexed: 11/12/2022]
Abstract
OBJECTIVES The purpose of the experiment was to study the effect of L-NAME (N(Omega)-nitro-L-arginine methyl ester) and its cotreatment with lidocaine on the spinal block and infiltrative cutaneous analgesia. METHODS The quality of cutaneous analgesia was examined by the block of the cutaneous trunci muscle reflexes following needle stimuli in the rat. Spinal anaesthetic potency was assessed by measuring three neurobehavioral examinations of nociceptive, proprioceptive and motor function following intrathecal injection in the rat. KEY FINDINGS L-NAME (0.6, 6 and 60 nmol) when cotreatment with lidocaine (ED50) produced dose-related cutaneous analgesia. Coadministration of L-NAME (0.6 μmol) with lidocaine intensified (P < 0.01) and prolonged (P < 0.001) cutaneous analgesia, whereas subcutaneous L-NAME (0.6 μmol) and saline did not provoke cutaneous analgesic effects. Adding L-NAME (2.5 μmol) to lidocaine intrathecally prolonged spinal sensory and motor block (P < 0.01), while intrathecal L-NAME (2.5 μmol) or 5% dextrose (vehicle) produced no spinal block. CONCLUSIONS L-NAME at 60 nmol (the minimum effective dose) increases and prolongs the effect of cutaneous analgesia of lidocaine. L-NANE at an ineffective dose potentiates lidocaine analgesic and anaesthetic effects.
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Affiliation(s)
- An-Kuo Chou
- Department of Anesthesiology, China Medical University Hospital, Taichung, Taiwan.,School of Medicine, College of Medicine, China Medical University, Taichung, Taiwan
| | - Yu-Wen Chen
- Department of Physical Therapy, College of Health Care, China Medical University, Taichung, Taiwan
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Yeh CC, Chiu CC, Wang JJ, Chou AK, Chen YW, Zhu GC, Hung CH. Intrathecal pramipexole and selegiline for sensory and motor block in rats. Pharmacol Rep 2022; 74:470-480. [PMID: 35554880 DOI: 10.1007/s43440-022-00368-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 04/08/2022] [Accepted: 04/12/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND The purpose of the study was to investigate spinal sensory and motor block by antiparkinsonian drugs (pramipexole and selegiline), and the combination of pramipexole and the local anesthetic lidocaine. METHODS Using a technique of spinal blockade in rats, the effects of pramipexole, selegiline, and coadministration of pramipexole and lidocaine on spinal blockades of motor and sensory function were investigated. RESULTS Under a concentration of 100 mM, pramipexole displayed more potent and had a longer duration of nociceptive, proprioceptive, and motor block than selegiline, whereas pramipexole and selegiline were less potent in comparison to lidocaine. Pramipexole produced spinal nociceptive, proprioceptive, and motor blocks in a dose-related manner. On the ED50 (50% effective dose) basis, the rank-order potency on nociceptive, proprioceptive, and motor block was pramipexole < lidocaine. The spinal block duration of pramipexole was greater than lidocaine at every equipotent dose tested (ED25, ED50, and ED75). Coadministration of lidocaine (ED50 or ED95) with pramipexole (4.5 μmol/kg) improved the effect (efficacy) and duration of the spinal block. CONCLUSIONS Pramipexole and selegiline were less potent than lidocaine to block sensory and motor responses. The duration of the spinal anesthetic effect of pramipexole was longer than lidocaine. At a non-effective dose, pramipexole increased the duration of efficacy of lidocaine.
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Affiliation(s)
- Chun-Chang Yeh
- Department of Anesthesiology, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan
| | - Chong-Chi Chiu
- School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan
- Department of General Surgery, E-Da Cancer Hospital, Kaohsiung, Taiwan
| | - Jhi-Joung Wang
- Department of Anesthesiology, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan
- Department of Medical Research, Chi-Mei Medical Center, Tainan, Taiwan
| | - An-Kuo Chou
- Department of Anesthesiology, China Medical University Hospital, Taichung, Taiwan
- School of Medicine, College of Medicine, China Medical University, Taichung, Taiwan
| | - Yu-Wen Chen
- Department of Medical Research, Chi-Mei Medical Center, Tainan, Taiwan
- Department of Physical Therapy, College of Health Care, China Medical University, Taichung, Taiwan
| | - Guan-Cheng Zhu
- Department of Physical Therapy, College of Medicine, National Cheng Kung University, No.1 Ta-Hsueh Road, Tainan, Taiwan
| | - Ching-Hsia Hung
- Department of Physical Therapy, College of Medicine, National Cheng Kung University, No.1 Ta-Hsueh Road, Tainan, Taiwan.
- Institute of Allied Health Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
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Tzeng JI, Chiu CC, Wang JJ, Hung CH, Chen YW. Spinal sensory and motor blockade by intrathecal doxylamine and triprolidine in rats. J Pharm Pharmacol 2018; 70:1654-1661. [PMID: 30251371 DOI: 10.1111/jphp.13017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 09/02/2018] [Indexed: 02/05/2023]
Abstract
OBJECTIVES The aim of this experiment was mainly to examine the effects of intrathecally injected doxylamine and triprolidine, two antihistamine drugs spinal motor and sensory functions. METHODS After intrathecally injecting the rats with five different doses, the dose-response curves of spinal sensory and motor block with doxylamine and triprolidine were constructed. In comparison with the local anaesthetic mepivacaine, the quality and duration of spinal anaesthesia with doxylamine or triprolidine were conducted. KEY FINDINGS Doxylamine, mepivacaine and triprolidine elicited spinal motor and sensory (nociception and proprioception) blockades in a dose-dependent fashion. On the ED50 (50% effective dose) basis, the rank order of drug potency was triprolidine > mepivacaine > doxylamine (P < 0.05) at provoking spinal motor, proprioceptive and nociceptive blockades. On the equianaesthetic doses (ED25 , ED50 and ED75 ), the duration of spinal anaesthesia with doxylamine was longer (P < 0.01) than that with mepivacaine or triprolidine. Moreover, doxylamine or triprolidine displayed greater potency (ED50 ) (P < 0.05) and duration (P < 0.05) of sensory block over motor block. CONCLUSIONS Doxylamine or triprolidine produces a dose-dependent effect of spinal motor and sensory block. Triprolidine with a better nociception-selective action over motor block has a better potency than mepivacaine or doxylamine. Doxylamine and triprolidine produce longer durations than mepivacaine.
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Affiliation(s)
- Jann-Inn Tzeng
- Department of Anesthesiology, Chi-Mei Medical Center, Yong Kang, Tainan, Taiwan
| | - Chong-Chi Chiu
- Department of General Surgery, Chi-Mei Medical Center, Tainan and Liouying, Taiwan
- Department of Electrical Engineering, Southern Taiwan University of Science and Technology, Tainan, Taiwan
| | - Jhi-Joung Wang
- Department of Medical Research, Chi Mei Medical Center, Tainan, Taiwan
| | - Ching-Hsia Hung
- Department of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Institute of Allied Health Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yu-Wen Chen
- Department of Medical Research, Chi Mei Medical Center, Tainan, Taiwan
- Department of Physical Therapy, College of Health Care, China Medical University, Taichung, Taiwan
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Hung CH, Shieh JP, Chiu CC, Wang JJ, Chen YW. Subcutaneous infiltration of doxylamine on cutaneous analgesia in rats. Pharmacol Rep 2018; 70:565-569. [PMID: 29679880 DOI: 10.1016/j.pharep.2017.12.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 11/28/2017] [Accepted: 12/19/2017] [Indexed: 02/07/2023]
Abstract
BACKGROUND We aimed to evaluate the effect of doxylamine, a first generation antihistamine, as a local analgesic agent by comparing its effect to bupivacaine. METHODS After blocking the cutaneous trunci muscle reflex (CTMR) by subcutaneous injection of doxylamine, we assessed doxylamine's cutaneous analgesic effect in rats. The dose-related effect and duration of doxylamine on infiltrative cutaneous analgesia were compared with that of bupivacaine. RESULTS We demonstrated that doxylamine, as well as the local anesthetic bupivacaine produced the cutaneous analgesic effects in a dose-related fashion. At the equipotent dose (50% effective doses (ED50)), the relative potency was bupivacaine (0.41 (0.36-0.48) mmol)> doxylamine (7.39 (6.91-7.91)mmol) (p<0.01). On an equipotent basis (ED25, ED50 and ED75), subcutaneous doxylamine resulted in greater duration of action (p<0.01) than bupivacaine at producing cutaneous analgesia. CONCLUSIONS The result of this experiment indicated that doxylamine has the local anesthetic property less potent than bupivacaine, but its nociceptive block duration is longer than that of bupivacaine at an equianalgesic dose.
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Affiliation(s)
- Ching-Hsia Hung
- Department of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Institute of Allied Health Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ja-Ping Shieh
- Department of Anesthesiology, Chi Mei Medical Center, Tainan, Taiwan; Center for General Education, Southern Taiwan University of Science and Technology, Tainan, Taiwan
| | - Chong-Chi Chiu
- Department of General Surgery, Chi Mei Medical Center, Tainan and Liouying, Taiwan; Department of Electrical Engineering, Southern Taiwan University of Science and Technology, Tainan, Taiwan
| | - Jhi-Joung Wang
- Department of Medical Research, Chi Mei Medical Center, Tainan, Taiwan
| | - Yu-Wen Chen
- Department of Medical Research, Chi Mei Medical Center, Tainan, Taiwan; Department of Physical Therapy, College of Health Care, China Medical University, Taichung, Taiwan.
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Chou AK, Chiu CC, Han MM, Chen YW, Wang JJ, Hung CH. Intrathecal pramoxine causes long-lasting spinal sensory and motor block in rats. J Pharm Pharmacol 2018; 70:543-549. [PMID: 29441574 DOI: 10.1111/jphp.12894] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Accepted: 01/13/2018] [Indexed: 02/05/2023]
Abstract
OBJECTIVES The objective of this experiment was to investigate spinal anaesthetic effects of pramoxine and its comparison with bupivacaine, a long-lasting local anaesthetic. METHODS After intrathecal injection, three neurobehavioural assessments, which consisted of nociceptive, proprioceptive and motor block, were constructed in rats. The effects of bupivacaine and pramoxine (four doses of each drug) in a dose-related manner were conducted to obtain the ED50 (50% effective dose). Pramoxine potency and duration at provoking spinal nociceptive, proprioceptive and motor block were compared with those of bupivacaine. KEY FINDINGS We manifested that pramoxine provoked dose-relatedly spinal blockades of nociception, proprioception and motor function. Based on the ED50 , the rank potency at producing spinal nociceptive, proprioceptive and motor block was bupivacaine (0.90 (0.82-1.02), 1.00 (0.92-1.08) and 1.16 (1.02-1.34) μmol/kg) greater (P < 0.01 for the differences) than pramoxine (15.47 (14.04-17.05), 16.46 (15.06-17.99), and 17.77 (16.48-19.15) μmol/kg). The spinal block duration created by bupivacaine was not predominantly different (P > 0.05 for the differences) from that created by pramoxine at the equipotent doses (ED75 , ED50 and ED25 ). CONCLUSIONS Our preclinical experiment indicated that pramoxine elicited a dose-related spinal block, was less potent than bupivacaine and had a similar duration of spinal block compared with bupivacaine.
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Affiliation(s)
- An-Kuo Chou
- Department of Anesthesiology, China Medical University Hospital, Taichung, Taiwan
- School of Medicine, College of Medicine, China Medical University, Taichung, Taiwan
| | - Chong-Chi Chiu
- Department of General Surgery, Chi Mei Medical Center, Tainan and Liouying, Taiwan
- Department of Electrical Engineering, Southern Taiwan University of Science and Technology, Tainan, Taiwan
| | - Ming-Ming Han
- Department of Anesthesiology, Anhui Provincial Hospital, Anhui Medical University, Hefei, China
| | - Yu-Wen Chen
- Department of Medical Research, Chi-Mei Medical Center, Tainan, Taiwan
- Department of Physical Therapy, College of Health Care, China Medical University, Taichung, Taiwan
| | - Jhi-Joung Wang
- Department of Medical Research, Chi-Mei Medical Center, Tainan, Taiwan
| | - Ching-Hsia Hung
- Department of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Institute of Allied Health Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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Chen YW, Shieh JP, Liu KS, Wang JJ, Hung CH. Naloxone prolongs cutaneous nociceptive block by lidocaine in rats. Fundam Clin Pharmacol 2017; 31:636-642. [PMID: 28677297 DOI: 10.1111/fcp.12302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 06/08/2017] [Accepted: 06/30/2017] [Indexed: 11/26/2022]
Abstract
We aimed to investigate the local anesthetic properties of naloxone alone or as an adjunct for the local anesthetic lidocaine. After the block of the cutaneous trunci muscle reflex (CTMR) with drugs delivery by subcutaneous infiltration, cutaneous nociceptive block was tested on the ratsꞌ backs. We demonstrated that naloxone, as well as lidocaine, elicited cutaneous analgesia dose-dependently. The relative potency in inducing cutaneous analgesia was lidocaine [22.6 (20.1 - 25.4) μmol/kg] > naloxone [43.2 (40.3 - 46.4) μmol/kg] (P < 0.05). On an equianesthetic basis [50% effective dose (ED50 ), ED25 , and ED75 ], naloxone displayed a greater duration of cutaneous analgesic action than lidocaine (P < 0.01). Coadministration of lidocaine (ED95 or ED50 ) and ineffective-dose naloxone (13.3 μmol/kg) intensifies sensory block (P < 0.01) with prolonged duration of action (P < 0.001) compared with lidocaine (ED95 or ED50 ) alone or naloxone (13.3 μmol/kg) alone on infiltrative cutaneous analgesia. The preclinical data showed that naloxone is less potent than lidocaine as an infiltrative anesthetic, but its analgesic duration was longer than that of lidocaine. Furthermore, naloxone prolongs lidocaine analgesia, acting synergistically for nociceptive block.
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Affiliation(s)
- Yu-Wen Chen
- Department of Medical Research, Chi Mei Medical Center, Tainan, Taiwan.,Department of Physical Therapy, College of Health Care, China Medical University, Taichung, Taiwan
| | - Ja-Ping Shieh
- Department of Anesthesiology, Chi Mei Medical Center, Tainan, Taiwan.,Center for General Education, Southern Taiwan University of Science and Technology, Tainan, Taiwan
| | - Kuo-Sheng Liu
- Department of Pharmacy, Chia Nan University of Pharmacy and Science, Tainan, Taiwan
| | - Jhi-Joung Wang
- Department of Medical Research, Chi Mei Medical Center, Tainan, Taiwan
| | - Ching-Hsia Hung
- Department of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Institute of Allied Health Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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Tzeng JI, Kan CD, Wang JN, Wang JJ, Lin HT, Hung CH. Intrathecal amantadine for prolonged spinal blockade of sensory and motor functions in rats. Fundam Clin Pharmacol 2016; 30:357-63. [DOI: 10.1111/fcp.12200] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 03/02/2016] [Accepted: 03/22/2016] [Indexed: 11/30/2022]
Affiliation(s)
- Jann-Inn Tzeng
- Department of Anesthesiology; Chi-Mei Medical Center; Yong Kang Tainan Taiwan
| | - Chung-Dann Kan
- Division of Cardiovascular Surgery; Department of Surgery; National Cheng Kung University Hospital; College of Medicine; National Cheng Kung University; Tainan Taiwan
| | - Jieh-Neng Wang
- Department of Pediatrics; National Cheng Kung University Hospital; College of Medicine; National Cheng Kung University; Tainan Taiwan
| | - Jhi-Joung Wang
- Department of Medical Research; Chi-Mei Medical Center; Tainan Taiwan
| | - Heng-Teng Lin
- Department of Physical Medicine and Rehabilitation; Madou Sin-Lau Hospital; Tainan Taiwan
- Department of Nursing; Chung Hwa University of Medical Technology; Tainan Taiwan
| | - Ching-Hsia Hung
- Department of Physical Therapy; College of Medicine; National Cheng Kung University; Tainan Taiwan
- Institute of Allied Health Sciences; College of Medicine; National Cheng Kung University; Tainan Taiwan
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Tzeng JI, Wang JN, Wang JJ, Chen YW, Hung CH. Intrathecal rimantadine induces motor, proprioceptive, and nociceptive blockades in rats. Neurosci Lett 2016; 618:94-98. [DOI: 10.1016/j.neulet.2016.02.061] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2016] [Revised: 02/27/2016] [Accepted: 02/29/2016] [Indexed: 11/28/2022]
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