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Kenward H, Elliott J, Lee T, Pelligand L. Anti-nausea effects and pharmacokinetics of ondansetron, maropitant and metoclopramide in a low-dose cisplatin model of nausea and vomiting in the dog: a blinded crossover study. BMC Vet Res 2017; 13:244. [PMID: 28814338 PMCID: PMC5559813 DOI: 10.1186/s12917-017-1156-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 08/03/2017] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Nausea is a subjective sensation which is difficult to measure in non-verbal species. The aims of this study were to determine the efficacy of three classes of antiemetic drugs in a novel low dose cisplatin model of nausea and vomiting and measure change in potential nausea biomarkers arginine vasopressin (AVP) and cortisol. A four period cross-over blinded study was conducted in eight healthy beagle dogs of both genders. Dogs were administered 18 mg/m2 cisplatin intravenously, followed 45 min later by a 15 min infusion of either placebo (saline) or antiemetic treatment with ondansetron (0.5 mg/kg; 5-HT3 antagonist), maropitant (1 mg/kg; NK1 antagonist) or metoclopramide (0.5 mg/kg; D2 antagonist). The number of vomits and nausea associated behaviours, scored on a visual analogue scale, were recorded every 15 min for 8 h following cisplatin administration. Plasma samples were collected to measure AVP, cortisol and antiemetic drug concentrations. RESULTS The placebo treated group vomited an average number of 7 times (range 2-13). None of the dogs in either the ondansetron or maropitant treated groups vomited during the observation period. The onset of nausea-like behaviour in the placebo-treated group occurred at t3.5h and peaked at t4.75h with nausea behaviour score of 58.5 ± 4.6 mm. Ondansetron and maropitant reduced overall the area under the curve of nausea behaviour score by 90% and 25%, respectively. Metoclopramide had no effect on either vomiting or nausea. Cisplatin-induced nausea and vomiting caused concomitant increases in AVP and cortisol. In the placebo-treated group, AVP and cortisol increased from t2.5h, peaked at t5h (11.3 ± 2.9 pmol L-1 and 334.0 ± 46.7 nmol/L, respectively) and returned to baseline by t8h. AVP and cortisol increases were completely prevented by ondansetron and only partially by maropitant, while metoclopramide had no effect. The terminal half-lives (harmonic mean ± pseudo SD) for ondansetron, maropitant and metoclopramide were 1.21 ± 0.51, 5.62 ± 0.77 and 0.87 ± 0.17 h respectively. CONCLUSIONS 5-HT3 receptor antagonist ondansetron demonstrates the greatest anti-emetic and anti-nausea efficacy of the three drugs. AVP and cortisol appear to be selective biomarkers of nausea rather than emesis, providing a means of objectively measuring of nausea in the dog.
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Affiliation(s)
- Hannah Kenward
- Department of Comparative Biomedical Sciences, Royal Veterinary College, Hawkshead Lane, North Mymms, Hatfield, Herts, AL9 7TA, UK
| | - Jonathan Elliott
- Department of Comparative Biomedical Sciences, Royal Veterinary College, Hawkshead Lane, North Mymms, Hatfield, Herts, AL9 7TA, UK
| | - Terry Lee
- Analytical Services International (ASI), St Georges, University of London, Cranmer Terrace, London, SW17 0RE, UK
| | - Ludovic Pelligand
- Department of Comparative Biomedical Sciences, Royal Veterinary College, Hawkshead Lane, North Mymms, Hatfield, Herts, AL9 7TA, UK. .,Department of Clinical Sciences and Services, Royal Veterinary College, Hawkshead Lane, North Mymms, Hatfield, Herts, AL9 7TA, UK.
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Ullah I, Subhan F, Lu Z, Chan SW, Rudd JA. Action of Bacopa monnieri to antagonize cisplatin-induced emesis in Suncus murinus (house musk shrew). J Pharmacol Sci 2017; 133:232-239. [PMID: 28363413 DOI: 10.1016/j.jphs.2017.03.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 01/27/2017] [Accepted: 03/01/2017] [Indexed: 10/20/2022] Open
Abstract
Bacopa monnieri (BM, family Scrophulariaceae) is used in several traditional systems of medicine for the management of epilepsy, depression, neuropathic pain, sleep disorders and memory deficits. The present study investigated the potential of BM methanol (BM-MetFr) and BM n-butanol fractions (BM-ButFr) to reduce chemotherapy-induced emesis in Suncus murinus (house musk shrew). Cisplatin (30 mg/kg, i.p.) reliably induced retching and/or vomiting over a 2 day period. BM-MetFr (10-40 mg/kg, s.c.) and BM-ButFr (5-20 mg/kg, s.c.) antagonized the retching and/or vomiting response by ∼59.4% (p < 0.05) and 78.9% (p < 0.05), respectively, while the 5-HT3 receptor antagonist, palonosetron (0.5 mg/kg, s.c.), reduced the response by ∼71% (p < 0.05). The free radical scavenger/antioxidant, N-(2-mercaptopropionyl)-glycine (30-300 mg/kg, s.c.) reduced the retching and/or vomiting response occurring on day one non-significantly by 44% (p > 0.05). In conclusion, the n-butanol fractions of BM have anti-emetic activity comparable with palonosetron and MPG. BM may be useful alone or in combination with other anti-emetic drugs for the treatment of chemotherapy-induced emesis in man.
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Affiliation(s)
- Ihsan Ullah
- Department of Pharmacy, University of Swabi, Swabi, Pakistan; Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
| | - Fazal Subhan
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
| | - Zengbing Lu
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
| | - Sze Wa Chan
- School of Health Sciences, Caritas Institute of Higher Education, Tseung Kwan O, N.T., Hong Kong
| | - John A Rudd
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong; Brain and Mind Institute, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong.
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3
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Zhong W, Picca AJ, Lee AS, Darmani NA. Ca2+ signaling and emesis: Recent progress and new perspectives. Auton Neurosci 2017; 202:18-27. [DOI: 10.1016/j.autneu.2016.07.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 07/21/2016] [Accepted: 07/22/2016] [Indexed: 02/07/2023]
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4
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Zhong W, Chebolu S, Darmani NA. Broad-spectrum antiemetic efficacy of the l-type calcium channel blocker amlodipine in the least shrew (Cryptotis parva). Pharmacol Biochem Behav 2014; 120:124-32. [DOI: 10.1016/j.pbb.2014.03.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 02/20/2014] [Accepted: 03/06/2014] [Indexed: 10/25/2022]
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5
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Huang D, Meyers K, Henry S, De la Torre F, Horn CC. Computerized detection and analysis of cancer chemotherapy-induced emesis in a small animal model, musk shrew. J Neurosci Methods 2011; 197:249-58. [PMID: 21392533 DOI: 10.1016/j.jneumeth.2011.02.032] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2011] [Revised: 02/25/2011] [Accepted: 02/28/2011] [Indexed: 11/17/2022]
Abstract
Vomiting is a common side effect of cancer chemotherapy and many drug treatments and diseases. In animal studies, the measurement of vomiting usually requires direct observation, which is time consuming and often lacks temporal precision. Musk shrews have been used to study the neurobiology of emesis and have a rapid emetic episode (∼1 s for a sequence of retching and expulsion). The aim of the current study was to develop a method to automatically detect and characterize emetic episodes induced by the cancer chemotherapy agent cisplatin. The body contour in each video frame was tracked and normalized to a parameterized shape basis. The tracked shape was projected to a feature space that maximized the shape variations in the consecutive frames during retching. The resulting one dimensional projection was sufficient to detect most emetic episodes in the acute (peak at 2h) and delayed (peak at 54 h) phases after cisplatin treatment. Emetic episodes were relatively invariant in the number of retches (∼6.2), duration (∼1.2s), inter-retch interval (∼198 ms), and amplitude during the 72 h after cisplatin treatment. This approach should open a new vista into emesis research to permit tracking and analysis of emesis in a small animal model and facilitate the development of new antiemetic therapies. These results also yield a better understanding of the brain's central pattern generator for emesis and indicate that the retching response in the musk shrew (at ∼5.4 Hz) is the fastest ever recorded in a free-moving animal.
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Affiliation(s)
- Dong Huang
- Carnegie Mellon University, Robotics Institute, Pittsburgh, PA, USA
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6
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TOHEI A, KOJIMA SI, IKEDA M, HOKAO R, SHINODA M. Effects of Cyclophosphamide on the Kaolin Consumption (Pica Behavior) in Five Strains of Adult Male Rats. J Vet Med Sci 2011; 73:901-6. [DOI: 10.1292/jvms.10-0433] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Atsushi TOHEI
- Laboratory Animal Research Center, Dokkyo Medical University
| | | | - Masashi IKEDA
- Institute of International Education and Research, Dokkyo Medical University
| | | | - Motoo SHINODA
- Laboratory Animal Research Center, Dokkyo Medical University
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7
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Percie du Sert N, Rudd JA, Moss R, Andrews PL. The delayed phase of cisplatin-induced emesis is mediated by the area postrema and not the abdominal visceral innervation in the ferret. Neurosci Lett 2009; 465:16-20. [DOI: 10.1016/j.neulet.2009.08.075] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2009] [Revised: 08/28/2009] [Accepted: 08/29/2009] [Indexed: 10/20/2022]
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8
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Yamamoto K, Chan SW, Rudd JA, Lin G, Asano K, Yamatodani A. Involvement of hypothalamic glutamate in cisplatin-induced emesis in Suncus murinus (house musk shrew). J Pharmacol Sci 2009; 109:631-4. [PMID: 19352072 DOI: 10.1254/jphs.08333sc] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
We investigated the effect of cisplatin on glutamate release in the hypothalamus of Suncus murinus measured by brain microdialysis. Dialysis samples were collected every 20 min for 1 h before and 3 h after the cisplatin (30 mg/kg, i.p.) administration with the animals also being observed for the development of emesis. Cisplatin increased glutamate levels within 1 h and this was closely associated with the occurrence of emesis. Pretreatment with the 5-HT(3)-receptor antagonist ondansetron (2 mg/kg, i.p.) inhibited both the emesis and the increased glutamate levels. These results suggest that hypothalamic glutamate is involved in cisplatin-induced emesis in Suncus murinus.
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Affiliation(s)
- Kouichi Yamamoto
- Department of Medical Physics and Engineering, Division of Health Sciences, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan.
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9
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Darmani NA, Crim JL, Janoyan JJ, Abad J, Ramirez J. A re-evaluation of the neurotransmitter basis of chemotherapy-induced immediate and delayed vomiting: Evidence from the least shrew. Brain Res 2009; 1248:40-58. [DOI: 10.1016/j.brainres.2008.10.063] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2008] [Revised: 10/17/2008] [Accepted: 10/27/2008] [Indexed: 02/07/2023]
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10
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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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11
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Kan KKW, Jones RL, Ngan MP, Rudd JA, Wai MK. Emetic action of the prostanoid TP receptor agonist, U46619, in Suncus murinus (house musk shrew). Eur J Pharmacol 2004; 482:297-304. [PMID: 14660035 DOI: 10.1016/j.ejphar.2003.09.069] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The emetic action of the prostanoid TP receptor agonist, 11alpha,9alpha-epoxymethano-15S-hydroxyprosta-5Z,13E-dienoic acid (U46619; 300 microg/kg, i.p.), was investigated in Suncus murinus. The emetic response was reduced by 76% following bilateral abdominal vagotomy (P<0.001) and by reserpine (5 mg/kg, i.p., 24 h pretreatment; P<0.05) but U46619 administered i.c.v. (30-300 ng) was not emetic, suggesting a peripheral mechanism involving monoamines. However, fenfluramine (5 mg/kg, repeated treatment) and para-chlorophenylalanine (100-400 mg/kg) and ondansetron (0.3-3 mg/kg) were inactive (P>0.05) to reduce U46619-induced emesis precluding a role of 5-HT and 5-HT(3) receptors in the mechanism. Similarly, phentolamine (0.3-3 mg/kg), propranolol (3 mg/kg), and their combination, and metoclopramide (0.3-3 mg/kg), domperidone (0.3-3 mg/kg), droperidol (0.3-3 mg/kg), scopolamine (0.3-3 mg/kg) and promethazine (0.3-3 mg/kg) were inactive (P>0.05) to reduce the retching and vomiting response. However, the tachykinin NK(1) receptor antagonist, (+)-2S,3S(-3-(2-methoxy-5-trifluoromethoxybenzyl)amino-2-phenylpiperidine) (CP-122,721; 1-10 mg/kg) antagonized emesis (P<0.01). In conclusion, U46619-induced emesis appears to be mediated via a predominant peripheral mechanism sensitive to reserpine and is not likely to involve adrenoceptors, dopamine, 5-HT(3), muscarinic or histamine (H(1)) receptors. The action of CP-122,721 to reduce U46619-induced emesis extends the spectrum of anti-emetic action tachykinin NK(1) receptor antagonists to mechanisms involving TP receptors.
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Affiliation(s)
- Kelvin K W Kan
- Department of Pharmacology, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
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12
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Abstract
Cytotoxic drug-induced nausea and vomiting are the side effects most feared by cancer patients. Emesis is an instinctive defense reaction caused by the somato-autonomic nerve reflex, which is integrated in the medulla oblongata. Emesis caused by anticancer drugs is associated with an increase in the concentration of serotonin (5-HT) (5-HT) in the intestinal mucosa and brainstem. 5-HT released from the enterochromaffin (EC) cells, which synthesize and secrete 5-HT, stimulates the 5-HT receptors on the adjacent vagal afferent nerves. The depolarization of the vagal afferent nerves stimulates the vomiting center in the brainstem and eventually induces a vomiting reflex. 5-HT released from EC cells appears to mediate the cisplatin-induced emesis sensitive to 5-HT(3) receptor antagonists. The precise role of 5-HT in the occurrence of vomiting has not been fully elucidated. The present review describes the role of 5-HT in anticancer drug-induced emesis from the viewpoint of 5-HT release and afferent vagal nerve activity. Various models and methods for predicting emesis are also evaluated.
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Affiliation(s)
- Masaru Minami
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Japan.
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13
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Minami M, Endo T, Hirafuji M, Hamaue N, Liu Y, Hiroshige T, Nemoto M, Saito H, Yoshioka M. Pharmacological aspects of anticancer drug-induced emesis with emphasis on serotonin release and vagal nerve activity. Pharmacol Ther 2003; 99:149-65. [PMID: 12888110 DOI: 10.1016/s0163-7258(03)00057-3] [Citation(s) in RCA: 92] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Cytotoxic drug-induced nausea and vomiting are the side effects most feared by cancer patients. Emesis is an instinctive defense reaction caused by the somatoautonomic nerve reflex, which is integrated in the medulla oblongata. Emesis caused by cytotoxic drugs such as cisplatin is associated with an increase in the concentration of 5-hydroxytryptamine (5-HT) in the intestine and the brainstem. It is proposed that cytotoxic drugs evoke 5-HT release from the enterochromaffin (EC) cells in the intestinal mucosa and that the released 5-HT stimulates the 5-HT receptors on the adjacent vagal afferent nerves. The depolarization of the vagal afferent nerves stimulates the vomiting center in the brainstem and eventually induces a vomiting reflex. 5-HT released from EC cells seems to mediate the cisplatin-induced emesis sensitive to 5-HT(3) receptor antagonists. The release of 5-HT from the EC cells, however, is regulated by polymodal mechanisms on autoreceptors or heteroreceptors. The precise role of 5-HT on the occurrence of vomiting has not been fully elucidated. The present review aims to describe the role of 5-HT in anticancer drug-induced emesis from the viewpoint of 5-HT release and afferent vagus nerve activity. Various methods for predicting emesis are also evaluated.
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Affiliation(s)
- Masaru Minami
- Department of Pharmacology, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido 061-0293, Kanazawa, Japan.
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14
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Sam TSW, Cheng JTY, Johnston KD, Kan KKW, Ngan MP, Rudd JA, Wai MK, Yeung JHK. Action of 5-HT3 receptor antagonists and dexamethasone to modify cisplatin-induced emesis in Suncus murinus (house musk shrew). Eur J Pharmacol 2003; 472:135-45. [PMID: 12860482 DOI: 10.1016/s0014-2999(03)01863-6] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Ondansetron (1-3 mg/kg), granisetron (0.3-1 mg/kg) and dexamethasone (0.3-1 mg/kg), administered at 12-h intervals, were investigated for their potential to prevent cisplatin (30 mg/kg, i.p.)-induced emesis during a 72-h observation period. Ondansetron appeared more active than granisetron to antagonise the emetic response occurring in the first 4-h (P<0.05) period, but none of the regimens significantly antagonised emesis during the 0-24- and 24-72-h periods (P>0.05). However, ondansetron was more active to antagonise emesis on day 1 using a more frequent drug administration, whereas bilateral vagotomy only reduced emesis for 2 h, and 5-HT, 2-methyl-5-HT and 1-m-chloro-phenylbiguanide (up to 20-30 mg/kg, i.p.) were not emetic. The combination of ondansetron 1 mg/kg and dexamethasone 1 mg/kg, both administered every 12 h, significantly delayed the onset of emesis (P<0.05) but failed to reduce the total numbers of retches+vomits over the 3-day period (P>0.05). Results are discussed in relation to the clinical situation.
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Affiliation(s)
- Tasia S W Sam
- Department of Pharmacology, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, SAR, China
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15
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Ishii K, Uchino M, Kuwahara M, Tsubone H, Ebukuro S. Diurnal fluctuations of heart rate, body temperature and locomotor activity in the house musk shrew (Suncus murinus). Exp Anim 2002; 51:57-62. [PMID: 11871153 DOI: 10.1538/expanim.51.57] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Diurnal fluctuations of heart rate (HR), body temperature (BT) and locomotor activity (LA) in the unanaesthetized and unrestrained house musk shrew (Suncus murinus) were studied using a telemetry system. Six adult male shrews (Jic:SUN) weighing 60-70 g were used in the present study. They were housed under conditions of 24 C and a 12/12-hr light-dark cycle. HR, BT and LA were recorded over 10 days, following the post-implantation period (10 days or more) of the telemetric transmitter. A clear nocturnal rhythm of LA was shown, while intermittent and short-term LA were shown during the light period. The mean HR was 323.5 +/- 8.8 bpm in the light period and 354.3 +/- 5.2 bpm in the dark period, and the fluctuation of HR showed a nocturnal pattern. A nocturnal pattern was also observed in BT fluctuation, and all animals lowered their body temperature from 35-37 C to approximately 30 C or below, mostly during the light period. The fall of body temperature progressed over 2-3 hr, and then rose to the baseline temperature rapidly within approximately 30 min. While the body temperature fell, HR markedly decreased to approximately 100 bpm. These results suggest that the shrew has unique physiological properties in maintaining metabolic balance which are anticipated to be caused by the dramatic alteration of the autonomic nervous function.
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Affiliation(s)
- Keiji Ishii
- Department of Comparative Pathophysiology, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1 Yayoi, Bunkyo-Ku, Tokyo 113-8657, Japan
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16
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Uchino M, Ishii K, Kuwahara M, Ebukuro S, Tsubone H. Role of autonomic nervous system for development and suppression of motion sickness in Suncus murinus. Auton Neurosci 2001; 94:46-51. [PMID: 11775707 DOI: 10.1016/s1566-0702(01)00344-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
To clarify the role of autonomic nervous function in motion sickness, the effect of agents that act on the autonomic nervous system on the motion stimuli-induced emesis was studied in two strains of Suncus murinus (Jic:SUN-Her and Jic:SUN-Ler) with congenitally different sensitivity to veratrine sulfate. We demonstrated significant differences between the two strains in sensitivity to motion stimuli. Isoproterenol (2.5 mg kg(-1), s.c.) significantly prolonged the latency to the first emetic episode induced by motion stimuli and significantly decreased the number of emetic episodes in Jic:SUN-Her suncus. Hexamethoium (2.0 mg kg(-1), s.c.) tended to shorten the latency in Jic:SUN-Ler. Acetylcholine (1.2 mg kg(-1), s.c.) enhanced the emetic response in Jic:SUN-Ler, but atropine (4.0 mg kg(-1), s.c.) suppressed motion stimuli-induced emetic response in Jic:SUN-Her. These results suggest that the predominance of parasympathetic nervous activity is relevant to the enhancement of motion stimuli-induced emetic response, whereas the predominance of sympathetic nervous activity suppresses motion stimuli-induced emetic response. Norepinephrine (0.8 mg kg(-1), s.c.) enhanced motion stimuli-induced emesis contrary to isoproterenol in Jic:SUN-Ler although both drugs are adrenergic agents. However, atropine pretreatment (4.0 mg kg(-1), s.c.) inhibits norepinephrine-induced emetic response. It was considered that norepinephrine-induced emetic response might be dependent on a secondary increase of parasympathetic nervous activity due to bororeflex. Moreover, the different emetic response in Jic:SUN-Her and Jic:SUN-Ler suncus to motion stimuli and drug administration mentioned above indicated that different participation of autonomic nervous activity and/or afferent information from the baroreceptor in the emetic response may exist between these animal groups.
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Affiliation(s)
- M Uchino
- Department of Comparative Pathophysiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Japan.
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17
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Smith JE, Friedman MI, Andrews PL. Conditioned food aversion in Suncus murinus (house musk shrew) - a new model for the study of nausea in a species with an emetic reflex. Physiol Behav 2001; 73:593-8. [PMID: 11495664 DOI: 10.1016/s0031-9384(01)00538-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The lack of a small animal model with an emetic reflex in which the relationship between conditioned food aversion and emesis could be investigated prompted a study of the insectivore, Suncus murinus (the house musk shrew). A novel food (either tuna or chicken cat food) was paired (C+) with a single exposure to either nicotine (4 mg/kg sc), motion (1 Hz, 4 cm, 10 min) or lithium chloride (100 mg/kg ip) or was paired (C-) with either saline or sham exposure to motion. Nicotine and motion both induced emesis (retching/vomiting) but lithium chloride did not. All three treatments produced a conditioned food aversion after a single pairing with consumption of C+ food. When given a choice between the two foods, S. murinus given lithium chloride, motion exposure and nicotine consumed, respectively, only 25%, 23% and 1% of their total intake from the C+ food. This study shows that a conditioned food aversion can be readily induced in S. murinus and that the induction of emesis can be uncoupled from food aversion. S. murinus provides a promising new model in which the relationship between emesis, nausea and conditioned food aversion can be investigated.
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Affiliation(s)
- J E Smith
- Department of Physiology, St. George's Hospital Medical School, Cranmer Terrace, SW17 0RE, London, UK
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Andrews PL, Okada F, Woods AJ, Hagiwara H, Kakaimoto S, Toyoda M, Matsuki N. The emetic and anti-emetic effects of the capsaicin analogue resiniferatoxin in Suncus murinus, the house musk shrew. Br J Pharmacol 2000; 130:1247-54. [PMID: 10903962 PMCID: PMC1572188 DOI: 10.1038/sj.bjp.0703428] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
1. In SUNCUS: murinus the ultrapotent capsaicin analogue resiniferatoxin (RTX) induced an emetic response in the dose range 1 - 1000 microg kg(-1), s.c. The latency was inversely related to dose and ranged from 41.2+/-4.4 min. (1 microg kg(-1), s.c.) to 2.7+/-0.6 min. (1000 microg kg(-1), s.c.). 2. The emetic response to RTX (10 or 100 microg kg(-1), s.c.) was blocked or markedly reduced by pre-treatment with RTX (100 microg kg(-1), s.c.), 8-OH-DPAT (100 microg kg(-1), s.c.), morphine (2 mg kg(-1), s.c.), neonatal capsaicin (100 mg kg(-1), s.c.) and the NK(1) receptor antagonist CP-99,994 (10 - 20 mg kg(-1), s.c.) but not by the 5-HT(3) receptor antagonist tropisetron (200 microg kg(-1), s.c.). 3. RTX (100 microg kg(-1), s.c.) induced c-fos-like immunoreactivity in the area postrema and parts of the nucleus tractus solitarius. This pattern is consistent with the proposal that the emetic effect is mediated via one or both of these structures and an involvement of substance P is discussed. 4. RTX (10 and 100 microg kg(-1), s.c.) had broad-spectrum antiemetic effects in Suncus as indicated by its ability to block or markedly reduce the emetic response to motion (1 Hz, 4 cm lateral, 10 min.), cisplatin (20 mg kg(-1), i.p.), intragastric copper sulphate (40 mg kg(-1), p.o.), nicotine (10 mg kg(-1), s.c.) and RTX (100 microg kg(-1), s.c.) itself. 5. It is proposed that the site of the anti-emetic effect is in the nucleus tractus solitarius and mechanisms involving the modulation of substance P release are discussed. 6. The general utility of SUNCUS: for investigations of vanilloid receptors is reviewed in the light of the exquisite sensitivity of the emetic reflex in this species to resiniferatoxin.
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Affiliation(s)
- P L Andrews
- Department of Physiology, St. George's Hospital Medical School, Cranmer Terrace, London.
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Tanihata S, Igarashi H, Suzuki M, Uchiyama T. Cisplatin-induced early and delayed emesis in the pigeon. Br J Pharmacol 2000; 130:132-8. [PMID: 10781008 PMCID: PMC1572039 DOI: 10.1038/sj.bjp.0703283] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
1. Intravenously injected cisplatin at a dose of 4 mg kg(-1) induced early and delayed emesis in all pigeons without occurrence of lethality during a 72 h observation period. The early emetic response occurred with a latency of 81.3+/-8.0 min (n=15) and reached a peak at 2 - 3 h, and decreased gradually within 8 h after injection. Then the delayed emetic response, whose peak was found between 10 to 23 h, lasted up to 48 h. The emetic response markedly declined after 48 h. 2. Reserpine markedly reduced monoamine levels in both brain and intestine and completely abolished the early and delayed emesis. Dexamethasone markedly reduced not only the early but also the delayed emetic responses. p-Chlorophenylalanine decreased the level of serotonin in brain and intestine without affecting noradrenaline and dopamine and partly reduced the early emetic response, but did not affect delayed emesis. 3. Bilateral vagotomy prolonged the latency time to the onset of early emesis, and reduced the emetic responses in both the early and delayed phases. 4. The above results suggest that the cisplatin-induced early emesis in the pigeon is partially mediated via the vagal nerve and reserpine-sensitive monoaminergic systems including the serotonergic system; the delayed emesis is associated with monoaminergic but not the serotonergic systems.
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Affiliation(s)
- Sachiko Tanihata
- Department of Pharmacology, Toho University School of Medicine, Ota-ku, Tokyo 143-8540, Japan
| | - Hiroaki Igarashi
- Second Department of Anatomy, Toho University School of Medicine, Ota-ku, Tokyo 143-8540, Japan
| | - Masami Suzuki
- Department of Pharmacology, Toho University School of Medicine, Ota-ku, Tokyo 143-8540, Japan
| | - Toshimitsu Uchiyama
- Department of Pharmacology, Toho University School of Medicine, Ota-ku, Tokyo 143-8540, Japan
- Author for correspondence:
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Teixeira CE, Moreno RA, Ferreira U, Rodrigues Netto N, Fregonesi A, Antunes E, De Nucci G. Pharmacological characterization of kinin-induced relaxation of human corpus cavernosum. BRITISH JOURNAL OF UROLOGY 1998; 81:432-6. [PMID: 9523665 DOI: 10.1046/j.1464-410x.1998.00533.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVE To characterize the kinin receptor subtype involved in the relaxation of human isolated corpus cavernosum (HCC) induced by bradykinin (BK), Lys-bradykinin (Lys-BK), Met-Lys-bradykinin (Met-Lys-BK) and des-Arg9-bradykinin, and to investigate whether the kinin-induced relaxation of HCC results from the stimulation of nonadrenergic, noncholinergic (NANC) neurons supplying the cavernosal tissue. MATERIALS AND METHODS Excised HCC tissues were immediately placed in Krebs solution and kept at 4 degrees C until use (never > 24 h after removal). HCC was cut in strips of approximately 2 cm, suspended in a cascade system and superfused with oxygenated and warmed Krebs solution at 5 mL/min. After equilibration for approximately 90 min, noradrenaline (3 micromol/L) was infused to induce a submaximal contraction of the HCC strips. The release of cyclo-oxygenase products was prevented by infusing indomethacin (6 micromol/L). HCC strips were calibrated by injecting a single bolus of the nitrovasodilator glyceryl trinitrate (GTN) and the sensitivity of the tissues adjusted electronically to be similar. The agonists (kinins, histamine and acetylcholine) were injected as a single bolus (up to 100 microL) and the relaxation of HCC expressed as a percentage of the submaximal relaxation induced by GTN. RESULTS Bradykinin, Lys-BK and Met-Lys-BK significantly relaxed the HCC tissues; on a molar basis, there was no statistical difference among the degrees of relaxation induced by these peptides. The B1 kinin receptor agonist des-Arg9-bradykinin had no effect on the HCC. The infusion of the B2 kinin receptor antagonist Hoe 140 (50 nmol/L) virtually abolished the relaxation induced by BK, Lys-BK and Met-Lys-BK without affecting those induced by acetylcholine and histamine. The infusion of the nitric oxide synthase inhibitor N(omega)-nitro-L-arginine methyl ester increased the tone of the HCC tissues and significantly reduced (P < 0.01) the relaxation induced by BK (74%), Lys-BK (90%), Met-Lys-BK (87%) and acetylcholine (89%) without affecting those induced by GTN. The subsequent infusion of L-arginine (300 micromol/L) partially reversed the increased tone and significantly (P < 0.01) restored the relaxation induced by BK, Lys-BK and Met-Lys-BK. The results were similar with the novel guanylate cyclase inhibitor 1H-[1,2,4] oxadiazolo[4,3,-alquinoxalin-1-one] which reduced by > 95% (P < 0.01) the relaxation induced by BK, Lys-BK, Met-Lys-BK, acetylcholine and GTN. The infusion of the sodium-channel blocker tetrodotoxin had no significant effect on the BK-, GTN- and acetylcholine-induced relaxation of HCC. CONCLUSION This study clearly showed the existence of functional B2 kinin receptors in human erectile tissues that when activated lead to the release of NO and hence relaxation of the HCC tissues. As tetrodotoxin failed to affect the kinin-induced relaxation of HCC strips, it is likely that these peptides release NO from the endothelium of sinusoidal capillaries rather than from neuronal sources supplying the cavernosal tissue. Although tissue kallikreins and their components have been found in the male reproductive system, the physiopathological importance of these findings has yet to be elucidated.
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Affiliation(s)
- C E Teixeira
- Department of Pharmacology, Faculty of Medical Sciences, UNICAMP, Campinas (SP), Brazil
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21
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Matsuki N, Wang CH, Okada F, Tamura M, Ikegaya Y, Lin SC, Hsu YN, Chaung LJ, Chen SJ, Saito H. Male/female differences in drug-induced emesis and motion sickness in Suncus murinus. Pharmacol Biochem Behav 1997; 57:721-5. [PMID: 9258999 DOI: 10.1016/s0091-3057(96)00389-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In order to elucidate possible male/female differences in emesis, the effects of various emetogenic drugs (cisplatin, copper sulfate, veratrine, nicotine, serotonin) and motion stimulus were compared between male and female Suncus murinus. Cisplatin (IP), nicotine (SC), veratrine (SC) and copper sulfate (PO) induced dose-dependent emesis in either sex, and there was no apparent difference in estimated ED50 values. However, male animals tended to be more susceptible to serotonin-induced emesis. The ID50 values for tropisetron, a 5-HT3 receptor antagonist, to block serotonin-induced emesis were also similar between male and female animals. However, tropisetron was less effective against cisplatin-induced emesis in females. Therefore, cisplatin may release more serotonin to induce emesis in females. Reciprocal shaking (horizontal oscillation 40 mm, frequency 0.5 to 2.0 Hz, duration 5 min) induced more frequent emesis in male animals, and the latency to the first vomit was shorter in males than in females. These results suggest that there is substantial sex-dependent difference in the emetic responses and male animals are in general more susceptible. These results are discussed in the light of similar studies in man.
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Affiliation(s)
- N Matsuki
- Department of Chemical Pharmacology, Faculty of Pharmaceutical Sciences, University of Tokyo, Japan
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22
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Andrews P, Torii Y, Saito H, Matsuki N. The pharmacology of the emetic response to upper gastrointestinal tract stimulation in Suncus murinus. Eur J Pharmacol 1996; 307:305-13. [PMID: 8836619 DOI: 10.1016/0014-2999(96)00275-0] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
This paper is the first to describe aspects of the mechanics of retching in the insectivore Suncus murinus (house musk shrew) and in an animal of such a small size (approximately 50 g). In anaesthetised animals using the novel stimulus of mechanical stimulation of the upper gastrointestinal tract as the provocative stimulus the frequency of retching was found to be about 4 retches/s, a much higher frequency than in other species (dog, cat, ferret). These studies show that quantification of retching in Suncus cannot be undertaken using direct observation. The temporal pattern of the emetic response was characterised in conscious Suncus using motion (1 Hz, 5 min) and nicotine (20 mg/kg s.c.). The ultrapotent capsaicin analogue resiniferatoxin (100 micrograms/kg s.c.) was discovered to be highly emetic and comparative studies showed that nicotine and resiniferatoxin induced the most intense responses with episodes (retches and a vomit) occurring every 10-15 s. The retching response to mechanical stimulation in the anaesthetised Suncus was not blocked by a 5-HT3 receptor antagonist (granisetron, 1-5 mg/kg s.c.), a tachykinin NK1 receptor antagonist (CP-99,994 20 mg/kg s.c. dihydrochloride salt (9+) -(2S,3S)-3-(2-methoxybenzylamino)-2-phenylpiperidine) or morphine (2 mg/kg s.c.) but was blocked by the 5-HT1A receptor agonist 8-hydroxy-2-(di-n-propylamino)tetralin (8-OH-DPAT 100 micrograms/kg s.c.). Suncus appears to be a suitable animal in which to study the pharmacology of the emetic response to mechanical stimulation of the gut. The results are discussed in the light of studies of the pharmacology of emesis in other species.
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Affiliation(s)
- P Andrews
- Department of Physiology, St. George's Hospital Medical School, London, UK.
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23
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Ito C, Isobe Y, Kijima H, Kiuchi Y, Ohtsuki H, Kawamura R, Tsuchida K, Higuchi S. The anti-emetic activity of GK-128 in Suncus murinus. Eur J Pharmacol 1995; 285:37-43. [PMID: 8846809 DOI: 10.1016/0014-2999(95)00372-r] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
In Suncus murinus, various emetic responses and the anti-emetic activity of a new 5-hydroxytryptamine3 (5-HT3) receptor antagonist, GK-128 (2-[(2-methylimidazol-1-yl) methyl benzo[f]thiochromen-1-one monohydrochloride hemihydrate), were investigated. Cancer chemotherapeutic agents, cisplatin and cyclophosphamide, dose-dependently induced emesis of long-lasting duration. The 5-HT3 receptor agonist, 2-methyl-5-HT, and copper sulfate also induced emesis of short duration. However, another 5-HT3 receptor agonist, m-chlorophenylbiguanide, was not consistently emetic. GK-128 inhibited the emetic responses induced by chemotherapeutic agents and 2-methyl-5-HT with similar potency. The anti-emetic action of GK-128 was more potent than that of ondansetron, Y-25130, granisetron and metoclopramide. The order of potency of these drugs, except granisetron, was consistent with that of their 5-HT3 receptor binding affinity in rat cortex. GK-128 failed to inhibit copper sulfate-induced emesis. These data suggest that GK-128 has a potent inhibitory effect on emesis via the 5-HT3 receptor, and that the 5-HT3 receptor involved in emesis in Suncus murinus may be different from the classically defined 5-HT3 receptor in other animals such as rats, dogs and ferrets.
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Affiliation(s)
- C Ito
- Department of Pharmacology, Taisho Pharmaceutical Co., Ltd., Saitama, Japan
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24
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Watanabe K, Nishiyama M. Characterization of a novel brain neutral glycosphingolipid composition in house musk shrew (Suncus murinus). EUROPEAN JOURNAL OF BIOCHEMISTRY 1995; 230:971-6. [PMID: 7601161 DOI: 10.1111/j.1432-1033.1995.tb20644.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Glycosphingolipids were extracted from the brain of house musk shrew (Suncus murinus). Neutral glycosphingolipids were purified by QAE-Sephadex column chromatography followed by high-performance liquid chromatography using an Iatrobeads column. Purified glycosphingolipids were identified by high-performance thin-layer chromatography, carbohydrate analysis, fast-atom bombardment mass spectrometry and TLC immunostaining. The ganglioside pattern was almost the same as the pattern obtained for rat brain gangliosides. The brain of S. murinus, however, was unique in its neutral glycosphingolipid composition; it contained gangliotriaosylceramide and gangliotetraosylceramide as the major neutral glycosphingolipids in addition to monohexosylceramides. Mass spectroscopy analysis showed that C18:1 sphingosine and C24:0 normal fatty acids were the major ceramide constituents in the glycosphingolipis, except in the case where a slower-migrating monohexosylceramide that contained C24 h:0 hydroxy fatty acids was observed. A day after birth, monohexosylceramide contained only normal fatty acids. The amounts of hydroxy-fatty-acid-containing monohexosylceramide increased rapidly as the age of the animals increased, and the ratio of these two kinds of monohexosylceramides was reversed within five weeks. Monohexosylceramide, ganglioside, and sulfatide contents in bulbus olfactorius were almost equal in amount in contrast to the glycolipids in the cerebrum and cerebellum that contained monohexosylceramide as the major constituent. The amount of monohexosylceramide in the bulbus olfactorius was 0.3-0.4 times the values obtained for the cerebrum and cerebellum.
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Affiliation(s)
- K Watanabe
- Division of Biochemistry, Shigei Medical Research Institute, Okayama, Japan
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Okada F, Saito H, Matsuki N. Blockade of motion- and cisplatin-induced emesis by a 5-HT2 receptor agonist in Suncus murinus. Br J Pharmacol 1995; 114:931-4. [PMID: 7780647 PMCID: PMC1510319 DOI: 10.1111/j.1476-5381.1995.tb13293.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
1. The effects of (+/-)-1-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane (DOl), a 5-hydroxytryptamine 5-HT2A/5-HT2C receptor agonist, on motion- and cisplatin-induced emesis were studied in Suncus murinus. Subcutaneous injection of DOl, 30 min prior to the emetic stimuli, dose-dependently blocked the emesis induced by motion sickness and cisplatin (20 mg kg-1, i.p.) with estimated ID50 values of 640 and 780 micrograms kg-1, respectively. 2. alpha-Methyl-5-hydroxytryptamine (alpha-Me-5-HT), a peripheral 5-HT2A/5-HT2C receptor agonist, had no effect on motion- and cisplatin-induced emesis. 3. The antiemetic effects of DOl on motion- and cisplatin-induced emesis were attenuated by preadministration of ketanserin, a selective 5-HT2A receptor antagonist. 4. The present results suggest an inhibitory role for central 5-HT2 receptors in the emetic reflex mechanism and that a 5-HT2 receptor agonist may be a useful tool to investigate the involvement of 5-HT receptors in the emetic reflex.
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Affiliation(s)
- F Okada
- Department of Chemical Pharmacology, Faculty of Pharmaceutical Sciences, University of Tokyo, Japan
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26
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Torii Y, Saito H, Matsuki N. Induction of emesis in Suncus murinus by pyrogallol, a generator of free radicals. Br J Pharmacol 1994; 111:431-4. [PMID: 8004387 PMCID: PMC1909966 DOI: 10.1111/j.1476-5381.1994.tb14753.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
1. We investigated whether or not pyrogallol, a generator of free radicals, is emetogenic in Suncus murinus, the house musk shrew. Pyrogallol (i.p.) caused dose-dependent emesis in suncus with an ED50 value of 77.3 mg kg-1. At a dose of 128 mg kg-1, all suncus vomited with mean latency of 18.8 +/- 5.2 min and the number of vomiting episodes was 8.6 +/- 2.9. 2. The prophylactic effects of N-(2-mercaptopropionyl)-glycine (MPG), an antioxidant, and tropisetron, a 5-hydroxytryptamine3 (5-HT3) receptor antagonist, were studied. Pyrogallol (128 mg kg-1, i.p.)-induced emesis was prevented by treatment with MPG (i.p.) or tropisetron (s.c.) with ID50 values of 149 mg kg-1 and 117 micrograms kg-1, respectively. 3. Pyrogallol-induced emesis was completely prevented by surgical abdominal vagotomy. 4. The present results indicate that pyrogallol-induced emesis is characteristically very similar to that caused by cisplatin and support the idea that generation of free radicals causes the release of peripheral 5-HT, which stimulates vagal afferent sensory nerves to cause emesis.
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Affiliation(s)
- Y Torii
- Department of Chemical Pharmacology, Faculty of Pharmaceutical Sciences, University of Tokyo, Japan
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27
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Okada F, Torii Y, Saito H, Matsuki N. Antiemetic effects of serotonergic 5-HT1A-receptor agonists in Suncus murinus. JAPANESE JOURNAL OF PHARMACOLOGY 1994; 64:109-14. [PMID: 8028227 DOI: 10.1254/jjp.64.109] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The antiemetic effects of six serotonergic 5-HT1A-receptor agonists, 8-hydroxy-2-(di-n-propylamino)tetrarin (8-OH-DPAT), 4-(4-[4-(2-pyrimidinyl)piperazin-1-yl]butyl)-2,3,4,5- tetrahydro-1,4-benzoxazepine-3,5-dione (SUN8399), buspirone, gepirone, ipsapirone and tandospirone, against motion sickness were investigated in Suncus murinus. Subcutaneous injection of all six agonists completely and dose-dependently suppressed motion-induced emesis. Pretreatment with 8-OH-DPAT or SUN8399 dose-dependently inhibited emesis elicited by nicotine (4.0 mg/kg, s.c.), veratrine (0.7 mg/kg, s.c.), cisplatin (20 mg/kg, i.p.) and copper sulfate (40 mg/kg, p.o.). These results suggest that serotonergic 5-HT1A-receptor agonists are effective as anti-motion sickness drugs, and these drugs may block a common mechanism(s) for the emetic reflex of the suncus because the antiemetic effects of the 5-HT1A-receptor agonists were exerted irrespective of the stimulus.
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Affiliation(s)
- F Okada
- Department of Chemical Pharmacology, Faculty of Pharmaceutical Science, University of Tokyo, Japan
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Fukui H, Yamamoto M, Sasaki S, Sato S. Emetic effects of anticancer drugs and involvement of visceral afferent fibers and 5-HT3 receptors in dogs. Eur J Pharmacol 1993; 250:281-7. [PMID: 8112385 DOI: 10.1016/0014-2999(93)90392-u] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The emetic effects of five anticancer drugs, cyclophosphamide, nitrogen mustard-N-oxide, actinomycin D, 5-fluorouracil and L-asparaginase, and the effects of bilateral abdominal vagotomy and bilateral greater splanchnic nerve section or a 5-HT3 receptor antagonist on the emesis induced by these drugs were investigated in dogs. Cyclophosphamide (20 mg/kg, i.v.), nitrogen mustard-N-oxide (5 mg/kg, i.v.) and actinomycin D (50 micrograms/kg, i.v.) caused vomiting in dogs with a long latency period. 5-Fluorouracil (5 mg/kg, i.v.) and L-asparaginase (2000 K.U./kg, i.v.) failed to induce vomiting. Bilateral abdominal vagotomy and bilateral greater splanchnic nerve section completely inhibited the vomiting induced by the former three anticancer drugs. Furthermore, the vomiting was inhibited completely by intravenous administration of ICS205930 (2 x 0.1 mg/kg), a 5-HT3 receptor antagonist. These results suggest that activation of visceral afferents through 5-HT3 receptors mediates the vomiting induced by cyclophosphamide, nitrogen mustard-N-oxide and actinomycin D.
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Affiliation(s)
- H Fukui
- Drug Safety Research Laboratories, Takeda Chemical Industries, Ltd., Osaka, Japan
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Matsuki N, Torii Y, Saito H. Effects of iron and deferoxamine on cisplatin-induced emesis: further evidence for the role of free radicals. Eur J Pharmacol 1993; 248:329-31. [PMID: 8181539 DOI: 10.1016/0926-6917(93)90008-e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The effects of ferric chloride and deferoxamine, an iron chelator, on cisplatin-induced emesis were studied in Suncus murinus. Pretreatment with ferric chloride (FeCl3, 16-64 mg/kg) increased the number of 20 mg/kg cisplatin-induced vomiting episodes. Deferoxamine (256 mg/kg) significantly reduced the number of vomiting episodes and prolonged the latency. These results further support the involvement of free radicals in the generation of cisplatin-induced emesis.
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Affiliation(s)
- N Matsuki
- Department of Chemical Pharmacology, Faculty of Pharmaceutical Sciences, University of Tokyo, Japan
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Fukui H, Yamamoto M, Ando T, Sasaki S, Sato S. Increase in serotonin levels in the dog ileum and blood by cisplatin as measured by microdialysis. Neuropharmacology 1993; 32:959-68. [PMID: 8295718 DOI: 10.1016/0028-3908(93)90060-g] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Involvement of ileal and circulating serotonin (5-HT) levels in cisplatin-induced emesis was examined using a microdialysis technique and an extraction method in dogs. The 5-HT levels in the ileal dialysate were increased to 232-294% of the basal level from 100 to 180 min after cisplatin administration (3 mg/kg, i.v.) and had returned to the basal level 280 min after dosing. The 5-HT levels in the blood dialysate were increased to 424-2165% from 140 to 180 min after dosing. The concentrations of 5-HT determined by HPLC following extraction were increased to 271% in the ileal mucosa and to 478% in plasma 3 hr after dosing. In immunohistochemistry, the number of 5-HT-immunoreactive cells was increased to 166% in the ileal mucosa following cisplatin treatment. These results strongly suggest that increases in the release and synthesis of 5-HT in the gut, probably in the enterochromaffin cells, are intimately involved in cisplatin-induced emesis.
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Affiliation(s)
- H Fukui
- Drug Safety Research Laboratories, Takeda Chemical Industries Ltd., Osaka, Japan
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31
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Torii Y, Mutoh M, Saito H, Matsuki N. Involvement of free radicals in cisplatin-induced emesis in Suncus murinus. Eur J Pharmacol 1993; 248:131-5. [PMID: 8223958 DOI: 10.1016/0926-6917(93)90034-n] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The participation of free radicals in cisplatin-induced emesis was investigated in the house musk shrew, Suncus murinus. Thiobarbituric acid (TBA) values, which indicate the degree of lipid peroxidation, in brain, liver and small intestine were increased significantly 60 min after the treatment with cisplatin (20 mg/kg, i.p.). Moreover, cisplatin (20 mg/kg, i.p.)-induced emesis was prevented by intraperitoneal injection of N-(2-mercaptopropionyl)glycine (MPG), a radical scavenging agent, with ID50 value of 130 mg/kg. However, MPG did not block the emesis induced by copper sulfate (40 mg/kg, p.o.), veratrine (0.5 mg/kg, s.c.) or serotonin (10 mg/kg, i.p.). We also investigated the effects of superoxide dismutase conjugated to polyethylene glycol and catalase, but the number of vomiting episodes and latency did not change significantly when these agents were intraperitoneally injected 30 min prior to or 20 min after the administration of cisplatin. MPG did not affect the antitumor effect of cisplatin tested in vitro. These results suggest that free radicals mediate emesis caused by cisplatin and that radical scavengers may become a new class of prophylactic drug against cancer-chemotherapeutic drug-induced emesis.
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Affiliation(s)
- Y Torii
- Department of Chemical Pharmacology, Faculty of Pharmaceutical Sciences, University of Tokyo, Japan
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