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Kim IJ, Choi GJ, Hwang HJ, Kang H. Effect of Prophylactic Tropisetron on Post-Operative Nausea and Vomiting in Patients Undergoing General Anesthesia: Systematic Review and Meta-Analysis with Trial Sequential Analysis. J Pers Med 2024; 14:797. [PMID: 39201989 PMCID: PMC11355328 DOI: 10.3390/jpm14080797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2024] [Revised: 07/10/2024] [Accepted: 07/24/2024] [Indexed: 09/03/2024] Open
Abstract
This systematic review and meta-analysis of randomized controlled trials (RCTs) with trial sequential analysis (TSA) aimed to comprehensively evaluate and compare the efficacy of the prophylactic administration of tropisetron in the prevention of the incidence of post-operative nausea and vomiting (PONV) in patients undergoing surgery under general anesthesia. This study was registered with PROSPERO (CRD42024372692). RCTs comparing the efficacy of the perioperative administration of tropisetron with that of a placebo, other anti-emetic agents, or a combination of anti-emetic injections were retrieved from the databases of Ovid-MEDLINE, Ovid-EMBASE, the Cochrane Central Register of Controlled Trials, and Google Scholar. The frequency of rescue anti-emetic use (RA) and the incidence of PON, POV, and PONV (relative risk [RR]: 0.718; 95% confidence interval [CI] 0.652-0.790; I2 = 0.0, RR: 0.587; 95% CI 0.455-0.757; I2 = 63.32, RR: 0.655; 95% CI 0.532-0.806; I2 = 49.09, and RR: 0.622; 95% CI 0.552-0.700; I2 = 0.00, respectively) in the tropisetron group were lower than those in the control group; however, the incidence of complete response (CR) was higher in the tropisetron group (RR: 1.517;95% CI 1.222-1.885; I2 = 44.14). TSA showed the cumulative Z-curve exceeded both the conventional test and trial sequential monitoring boundaries for RA, PON, POV, and PONV between the tropisetron group and the control group. Thus, the prophylactic administration of tropisetron exhibited superior efficacy in the prevention of PON, POV, and PONV. Furthermore, a lower incidence of RA and a higher incidence of CR were observed with its use.
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Affiliation(s)
- In Jung Kim
- Department of Anesthesiology and Pain Medicine, Chung-Ang University Hospital, 102 Heukseok-ro, Dongjak-gu, Seoul 06973, Republic of Korea; (I.J.K.); (G.J.C.)
- Department of Anesthesiology and Pain Medicine, Chung-Ang University College of Medicine, 84 Heukseok-ro, Dongjak-gu, Seoul 06911, Republic of Korea;
| | - Geun Joo Choi
- Department of Anesthesiology and Pain Medicine, Chung-Ang University Hospital, 102 Heukseok-ro, Dongjak-gu, Seoul 06973, Republic of Korea; (I.J.K.); (G.J.C.)
- Department of Anesthesiology and Pain Medicine, Chung-Ang University College of Medicine, 84 Heukseok-ro, Dongjak-gu, Seoul 06911, Republic of Korea;
| | - Hyeon Joung Hwang
- Department of Anesthesiology and Pain Medicine, Chung-Ang University College of Medicine, 84 Heukseok-ro, Dongjak-gu, Seoul 06911, Republic of Korea;
| | - Hyun Kang
- Department of Anesthesiology and Pain Medicine, Chung-Ang University Hospital, 102 Heukseok-ro, Dongjak-gu, Seoul 06973, Republic of Korea; (I.J.K.); (G.J.C.)
- Department of Anesthesiology and Pain Medicine, Chung-Ang University College of Medicine, 84 Heukseok-ro, Dongjak-gu, Seoul 06911, Republic of Korea;
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2
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Kim H, Park KT, Jo H, Shin Y, Chung G, Ko SG, Jin YH, Kim W. The effect of ginger extract on cisplatin-induced acute anorexia in rats. Front Pharmacol 2023; 14:1267254. [PMID: 38026983 PMCID: PMC10665510 DOI: 10.3389/fphar.2023.1267254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 10/30/2023] [Indexed: 12/01/2023] Open
Abstract
Cisplatin is a platinum-based chemotherapeutic agent widely used to treat various cancers. However, several side effects have been reported in treated patients. Among these, acute anorexia is one of the most severe secondary effects. In this study, a single oral administration of 100 or 500 mg/kg ginger extract (GE) significantly alleviated the cisplatin-induced decrease in food intake in rats. However, these body weight and water intake decreases were reversed in the 100 mg/kg group rats. To elucidate the underlying mechanism of action, serotonin (5-HT) and 5-HT2C, 3A, and 4 receptors in the nodose ganglion of the vagus nerve were investigated. The results showed that cisplatin-induced increases in serotonin levels in both the blood and nodose ganglion tissues were significantly decreased by100 and 500 mg/kg of GE administration. On 5-HT receptors, 5-HT3A and 4, but not 2C receptors, were affected by cisplatin, and GE 100 and 500 mg/kg succeeded in downregulating the evoked upregulated gene of these receptors. Protein expression of 5-HT3A and 4 receptors were also reduced in the 100 mg/kg group. Furthermore, the injection of 5-HT3A, and 4 receptors antagonists (palonostron, 0.1 mg/kg, i.p.; piboserod, 1 mg/kg, i.p., respectively) in cisplatin treated rats prevented the decrease in food intake. Using high-performance liquid chromatography (HPLC) analysis, [6]-gingerol and [6]-shogaol were identified and quantified as the major components of GE, comprising 4.12% and 2.15% of the GE, respectively. Although [6]-gingerol or [6]-shogaol alone failed to alleviate the evoked anorexia, when treated together, the effect was significant on the cisplatin-induced decrease in food intake. These results show that GE can be considered a treatment option to alleviate cisplatin-induced anorexia.
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Affiliation(s)
- Hyeonah Kim
- Department of Physiology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Keun-Tae Park
- Department of Physiology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Heejoon Jo
- Department of Physiology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Yuchan Shin
- Department of Physiology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Geehoon Chung
- Department of Physiology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Seong-Gyu Ko
- Korean Medicine-Based Drug Repositioning Cancer Research Center, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Young-Ho Jin
- Department of Physiology, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Woojin Kim
- Department of Physiology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
- Korean Medicine-Based Drug Repositioning Cancer Research Center, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
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Johnston KD, Lu Z, Rudd JA. Looking beyond 5-HT(3) receptors: a review of the wider role of serotonin in the pharmacology of nausea and vomiting. Eur J Pharmacol 2013; 722:13-25. [PMID: 24189639 DOI: 10.1016/j.ejphar.2013.10.014] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 10/09/2013] [Accepted: 10/09/2013] [Indexed: 12/18/2022]
Abstract
The concept that 5-hydroxytryptamine (5-HT; serotonin) is involved in the emetic reflex was revealed using drugs that interfere with its synthesis, storage, release and metabolism ahead of the discovery of selective tools to modulate specific subtypes of receptors. This review comprehensively examines the fundamental role of serotonin in emesis control and highlights data indicating association of 5-HT1-4 receptors in the emetic reflex, whilst leaving open the possibility that 5-HT5-7 receptors may also be involved. The fact that each receptor subtype may mediate both emetic and anti-emetic effects is discussed in detail for the first time. These discussions are made in light of known species differences in emesis control, which has sometimes affected the perception of the translational value of data in regard to the development of novel anti-emetic for use in man.
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Affiliation(s)
- Kevin D Johnston
- Department of Anesthesia, School of Medicine, The University of Leeds, Leeds, West Yorkshire, England
| | - Zengbing Lu
- Emesis Research Group, Neuro-degeneration, Development and Repair, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - John A Rudd
- Emesis Research Group, Neuro-degeneration, Development and Repair, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China.
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4
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Nakatsumi H, Komatsu Y, Yuki S, Sogabe S, Tateyama M, Muto S, Kudo M, Kato K, Miyagishima T, Uebayashi M, Meguro T, Oba K, Asaka M. Optimal dose period for indisetron tablets for preventing chemotherapy-induced nausea and vomiting with modified FOLFOX6: a randomized pilot study. Chemotherapy 2013; 58:439-44. [PMID: 23364217 DOI: 10.1159/000345920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Accepted: 11/18/2012] [Indexed: 11/19/2022]
Abstract
BACKGROUND Indisetron is a serotonin (5-hydroxytryptamine type 3) receptor antagonist that also antagonizes 5-hydroxytryptamine type 4 receptors. We designed a pilot study in order to explore the optimal dosing period for indisetron during modified FOLFOX6 (mFOLFOX6). PATIENTS AND METHODS Forty-two chemotherapy-naive patients with advanced colorectal cancer scheduled to receive mFOLFOX6 were randomly assigned to either a 1- or 3-day indisetron regimen arm. The primary endpoint was complete protection from vomiting. RESULTS Proportions of patients with complete protection from vomiting were 85.7% [95% confidence interval (CI) 63.7-97.0] with the 3-day regimen and 81.0% (95% CI 58.1-94.6) with the 1-day regimen. Proportions of patients with complete protection from nausea were 47.6% in each arm (95% CI 25.7-70.2). No rescue therapy rates were 66.7% (95% CI 43.0-85.4) versus 57.1% (95% CI 34.0-78.2). No severe adverse events were observed in either arm. CONCLUSION Both 1- and 3-day indisetron regimens were feasible for preventing nausea and vomiting induced by mFOLFOX6.
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Affiliation(s)
- Hiroshi Nakatsumi
- Department of Internal Medicine, Wakkanai City Hospital, Wakkanai, Hokkaido 097-8555, Japan.
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Darmani NA, Ray AP. Evidence for a re-evaluation of the neurochemical and anatomical bases of chemotherapy-induced vomiting. Chem Rev 2009; 109:3158-99. [PMID: 19522506 DOI: 10.1021/cr900117p] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Nissar A Darmani
- Department of Basic Medical Sciences, College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, California 91766-1854, USA.
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Effect of orally administered KF66490, a phosphodiesterase 4 inhibitor, on dermatitis in mouse models. Int Immunopharmacol 2009; 9:55-62. [DOI: 10.1016/j.intimp.2008.09.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2008] [Revised: 09/01/2008] [Accepted: 09/16/2008] [Indexed: 11/19/2022]
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7
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Abstract
Nausea and vomiting occur in a large number of disease conditions and as side effects of many drug treatments, including use of analgesics and anesthesia in surgery and chemotherapy in cancer treatment. Current anti-emetics provide relief from only some sources of vomiting, with more limited benefits for the control of nausea. Elucidation of forebrain pathways that generate nausea and brainstem circuitry controlling emesis are significant obstacles for the development of effective universal anti-nausea and anti-emetic treatments.
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Affiliation(s)
- Charles C Horn
- Monell Chemical Senses Center, Philadelphia, PA 19104 USA
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Rubenstein EB, Slusher BS, Rojas C, Navari RM. New approaches to chemotherapy-induced nausea and vomiting: from neuropharmacology to clinical investigations. Cancer J 2006; 12:341-7. [PMID: 17034670 DOI: 10.1097/00130404-200609000-00003] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Nausea and vomiting are considered to be among the most distressing consequences of cytotoxic chemotherapies. Currently, there are several novel 5-HT(3) receptor antagonists for the treatment of chemotherapy-induced nausea and vomiting (CINV), including ondansetron, granisetron, and dolasetron. These agents provide significant improvement in the management of acute emesis but are ineffective at preventing delayed emesis. In 2003, a new 5-HT(3) receptor antagonist, palonosetron HCL (Aloxi), was introduced to the U.S. market. Palonosetron was found to be effective in preventing delayed CINV. Indeed, palonosetron was the first and only 5-HT(3) receptor antagonist approved by the FDA for the prevention of both acute and delayed CINV. More recently, studies on the role of substance P in the emetic process led to the development of aprepitant (Emend) for the prevention of delayed emesis in combination with 5-HT(3) receptor antagonists. Despite these major advances, CINV remains uncontrolled in some patients. Current efforts are focused on treating refractory emesis and include both the clinical evaluation of compounds marketed for other indications and the preclinical evaluation of novel molecules targeting other transmitters in the emetic pathway. Ongoing work in pharmacogenomics has postulated several candidate genes that could be involved in emetic sensitivity and responsiveness to antiemetic therapy. Investigations into the pharmacogenomics of CINV may someday be able to aid in the identification of high risk patients and patients unlikely to respond to conventional therapies.
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Affiliation(s)
- Edward B Rubenstein
- Division of Medical and Scientific Affairs, MGI Pharma, Bloomington, Minnesota 55437, USA
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Fukushi E, Saito M, Sato H, Endo T, Hamaue N, Hirafuji M, Minami M, Kang Y. Functional roles of 5-hydroxytryptamine 3/4 receptors in neurons of rat dorsal motor nucleus of the vagus. Neuroscience 2006; 141:675-685. [PMID: 16725277 DOI: 10.1016/j.neuroscience.2006.04.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2005] [Revised: 04/07/2006] [Accepted: 04/13/2006] [Indexed: 10/24/2022]
Abstract
In neurons of dorsal motor nucleus of the vagus that is involved in the gastric motility and possibly emesis, application of 5-hydroxytryptamine produces membrane depolarization, and suppresses spike-repolarization and spike-afterhyperpolarization, suggesting divergent effects of 5-hydroxytryptamine through activating multiple subtypes of 5-hydroxytryptamine receptors. However, only the role of 5-hydroxytryptamine 2A receptors has been established to be responsible for the depolarization, and the mechanisms underlying the modulation of spikes remain unknown although a role of 5-hydroxytryptamine 4 receptors was implicated in modulations of spikes. There is now increasing evidence for the role of 5-hydroxytryptamine receptors in neurons involved in generating emesis following administration of anticancer drug. Since antagonists of 5-hydroxytryptamine 3/4 receptors are widely used as anti-emetic drugs, we have reevaluated the functional roles of 5-hydroxytryptamine 3/4 receptors of dorsal motor nucleus of the vagus neurons, especially in modulating transient outward currents that are presumed to be involved in spike-repolarization and spike-afterhyperpolarization. Whole-cell patch-clamp recordings were made from the dorsal motor nucleus of the vagus neurons, which were identified by a retrograde tracing method with dextran-tetramethylrhodamine-lysine injected into a bundle of abdominal vagus nerves. Under a voltage-clamp condition, dorsal motor nucleus of the vagus neurons expressed a prominent A-like current. The activation of 5-hydroxytryptamine 3 receptors reversibly increased the resting membrane conductance while the activation of 5-hydroxytryptamine 4 receptors led to an almost irreversible decrease in the A-like current. A long-lasting suppression of A-like current by transient activation of 5-hydroxytryptamine 4 receptors would result in a long-lasting increase in the excitability of dorsal motor nucleus of the vagus neurons, which might be involved in generation of the long-lasting facilitation of gastric motility or in generation of the long-lasting gastric relaxation through the activation of enteric non-adrenergic non-cholinergic neurons as implicated in the delayed emesis induced by anticancer drugs.
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Affiliation(s)
- E Fukushi
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido 1757, Kanazawa, Ishikari-Tobetsu, Hokkaido 061-0293, Japan
| | - M Saito
- Department of Neuroscience and Oral Physiology, Osaka University Graduate School of Dentistry, 1-8, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - H Sato
- Department of Neuroscience and Oral Physiology, Osaka University Graduate School of Dentistry, 1-8, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - T Endo
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido 1757, Kanazawa, Ishikari-Tobetsu, Hokkaido 061-0293, Japan
| | - N Hamaue
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido 1757, Kanazawa, Ishikari-Tobetsu, Hokkaido 061-0293, Japan
| | - M Hirafuji
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido 1757, Kanazawa, Ishikari-Tobetsu, Hokkaido 061-0293, Japan
| | - M Minami
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido 1757, Kanazawa, Ishikari-Tobetsu, Hokkaido 061-0293, Japan
| | - Y Kang
- Department of Neuroscience and Oral Physiology, Osaka University Graduate School of Dentistry, 1-8, Yamadaoka, Suita, Osaka 565-0871, Japan.
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Nakayama H, Yamakuni H, Higaki M, Ishikawa H, Imazumi K, Matsuo M, Mutoh S. Antiemetic activity of FK1052, a 5-HT3- and 5-HT4-receptor antagonist, in Suncus murinus and ferrets. J Pharmacol Sci 2005; 98:396-403. [PMID: 16079468 DOI: 10.1254/jphs.fpj05001x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
We investigated the effect of FK1052 [(+)-8,9-dihydro-10-methyl-7-[(5-methyl-1H-imidazol-4-yl)methyl]pyrido[1,2-a]indol-6(7H)-one hydrochloride], a 5-HT3- and 5-HT4-receptor antagonist, on the emesis induced by motion stimuli, copper sulfate, or cisplatin in either Suncus murinus or ferrets and also clarified the role of the 5-HT3 and 5-HT4 receptors in these models. In Suncus murinus, oral administration of FK1052 (100 microg/kg) completely prevented emesis induced by cisplatin (18 mg/kg, i.p.). Intraperitoneal injection of scopolamine (10 mg/kg) and promethazine (32 mg/kg), but not FK1052 (1 mg/kg), significantly reduced the emetic responses by motion stimuli. In ferrets, copper sulfate (40 mg/kg, p.o.)-induced emesis was moderately prevented by FK1052 (3.2 mg/kg), but not by granisetron (3.2 mg/kg). Cisplatin-induced acute (10 mg/kg, i.v.) and delayed (5 mg/kg, i.p.) emesis were significantly reduced by single and multiple intravenous injection of both FK1052 (3.2 mg/kg) and granisetron (3.2 mg/kg), respectively. The present study suggests that FK1052 may be useful against both acute and delayed emesis induced by cancer chemotherapy. Moreover, it is suggested that blockades of 5-HT3 and 5-HT4 receptors are not relevant to the control of motion sickness; and furthermore, it suggested that blocking 5-HT4 receptors in addition to 5-HT3 receptors does not have an additional effect on the control of cisplatin-induced emesis, but that 5-HT4 receptors are at least partly involved in the mechanism of emesis induced by copper sulfate.
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Affiliation(s)
- Hiroe Nakayama
- Medicinal Biology Research Laboratories, Fujisawa Pharmaceutical Co., Ltd, Kashima 2-1-6, Osaka 532-8514, Japan
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Liu YL, Malik N, Sanger GJ, Friedman MI, Andrews PLR. Pica—A model of nausea? Species differences in response to cisplatin. Physiol Behav 2005; 85:271-7. [PMID: 15939445 DOI: 10.1016/j.physbeh.2005.04.009] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2004] [Revised: 03/23/2005] [Accepted: 04/05/2005] [Indexed: 11/29/2022]
Abstract
Rats lack the emetic reflex but exhibit pica in response to stimuli that induce emesis in species with an emetic reflex, hence it has been proposed that pica may be analogous to emesis in species lacking the reflex. In the present study, we investigated whether pica was present in Suncus murinus (with an emetic reflex) as well as in rats and mice (without emetic reflex) to provide a further insight to the validity of pica as a model for nausea/vomiting. Cisplatin (6 mg/kg, i.p.) induced pica in rats, indicated by a significant increase in kaolin consumption at 24 h (but not 48 h) post-treatment whereas we failed to demonstrate this effect in mice (inbred or outbred strain, 6 or 20 mg/kg i.p.) and whilst cisplatin (20 mg/kg, i.p.) induced emesis in Suncus, kaolin intake was not significantly affected. Furthermore, cisplatin significantly increased the weight of gastric contents at 48 h post-injection in rats and mice indicating delayed gastric emptying whereas this effect was not present in Suncus. These results show that Suncus and two strains of mice, unlike rats, do not develop pica in response to cisplatin which suggests that the consumption of kaolin induced by cisplatin may not be associated with whether or not an emetic reflex is present. The differences in ingestive behaviour and gastric response between species with and without an emetic reflex in response to cisplatin treatment as well as the difference between mice and rats, is discussed in relation to the selection of models for the study of nausea and vomiting.
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Affiliation(s)
- Yong-Ling Liu
- Department of Basic Medical Sciences (Physiology), St. George's Hospital Medical School, Cranmer Terrace, London SW17 0RE, UK
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12
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Darmani NA, Johnson JC. Central and peripheral mechanisms contribute to the antiemetic actions of delta-9-tetrahydrocannabinol against 5-hydroxytryptophan-induced emesis. Eur J Pharmacol 2004; 488:201-12. [PMID: 15044052 DOI: 10.1016/j.ejphar.2004.02.018] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2004] [Accepted: 02/10/2004] [Indexed: 12/19/2022]
Abstract
Delta-9-tetrahydrocannabinol (delta-9-THC) prevents cisplatin-induced emesis via cannabinoid CB(1) receptors. Whether central and/or peripheral cannabinoid CB(1) receptors account for the antiemetic action(s) of delta-9-THC remains to be investigated. The 5-hydroxytryptamine (5-HT=serotonin) precursor, 5-hydroxytryptophan (5-HTP), is an indirect 5-HT agonist and simultaneously produces the head-twitch response (a centrally mediated serotonin 5-HT(2A) receptor-induced behavior) and emesis (a serotonin 5-HT(3) receptor-induced response, mediated by both peripheral and central mechanisms) in the least shrew (Cryptotis parva). The peripheral amino acid decarboxylase inhibitor, carbidopa, prevents the conversion of 5-HTP to 5-HT in the periphery and elevates 5-HTP levels in the central nervous system (CNS). When administered i.p. alone, a 50 mg/kg dose of 5-HTP failed to induce either behaviour while its 100 mg/kg dose produced robust frequencies of both head-twitch response and emesis. Pretreatment with carbidopa (0, 10, 20 and 40 mg/kg) potentiated the ability of both doses of 5-HTP to produce the head-twitch response in a dose-dependent but bell-shaped manner, with maximal potentiation occurring at 20 mg/kg carbidopa. Carbidopa dose-dependently reduced the frequency of 5-HTP (100 mg/kg)-induced emesis, whereas the 10 mg/kg dose potentiated, and the 20 and 40 mg/kg doses suppressed the frequency of vomits produced by the 50 mg/kg dose of 5-HTP. The peripheral and/or central antiemetic action(s) of delta-9-THC (0, 1, 2.5, 5, 10 and 20 mg/kg) against 5-HTP (100 mg/kg)-induced head-twitch response and emesis were investigated in different groups of carbidopa (0, 10 and 20 mg/kg) pretreated shrews. Irrespective of carbidopa treatment, delta-9-THC attenuated the frequency of 5-HTP-induced head-twitch response in a dose-dependent manner with similar ID(50) values. Although delta-9-THC also reduced the frequency of 5-HTP-induced emesis with similar ID(50s), at the 5 mg/kg delta-9-THC dose however, 5-HTP induced significantly less vomits in the 10 and 20 mg/kg carbidopa-treated groups relative to its 0 mg/kg control group. Moreover, increasing doses of carbidopa significantly shifted the inhibitory dose-response effect of delta-9-THC in protecting shrews from 5-HTP-induced emesis to the left. Relatively, a large dose of delta-9-THC (20 mg/kg) was required to significantly reduce the number of vomits produced by direct acting serotonergic 5-HT(3) receptor agonists, serotonin and 2-methylserotonin. Low doses of delta-9-THC (0.1-1 mg/kg) nearly completely prevented 2-methylserotonin-induced, centrally mediated, head-twitch and ear-scratch responses. The results indicate that delta-9-THC probably acts pre- and postsynaptically to attenuate emesis produced by indirect and direct acting 5-HT(3) receptor agonists via both central and peripheral mechanisms. In addition, delta-9-THC prevents 5-HTP-induced head-twitch and emesis via cannabinoid CB(1) receptors since the CB(1) receptor antagonist, SR 141716A [N-piperidino-5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methylpyrazole-3-carboxamide], countered the inhibitory actions of an effective dose of delta-9-THC against both behaviours.
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Affiliation(s)
- Nissar A Darmani
- Department of Pharmacology, Kirksville College of Osteopathic Medicine, A.T. Still University of Health Sciences, 800 West Jefferson Street, Kirksville, MO 63501, USA.
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13
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Stieler JM, Reichardt P, Riess H, Oettle H. Treatment Options for Chemotherapy-Induced Nausea and Vomiting. ACTA ACUST UNITED AC 2003. [DOI: 10.2165/00024669-200302010-00002] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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