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Mali SS, Silva R, Gong Z, Cronce M, Vo U, Vuong C, Moayedi Y, Cox JS, Bautista DM. SARS-CoV-2 papain-like protease activates nociceptors to drive sneeze and pain. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.10.575114. [PMID: 38260476 PMCID: PMC10802627 DOI: 10.1101/2024.01.10.575114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
SARS-CoV-2, the virus responsible for COVID-19, triggers symptoms such as sneezing, aches and pain.1 These symptoms are mediated by a subset of sensory neurons, known as nociceptors, that detect noxious stimuli, densely innervate the airway epithelium, and interact with airway resident epithelial and immune cells.2-6 However, the mechanisms by which viral infection activates these neurons to trigger pain and airway reflexes are unknown. Here, we show that the coronavirus papain-like protease (PLpro) directly activates airway-innervating trigeminal and vagal nociceptors in mice and human iPSC-derived nociceptors. PLpro elicits sneezing and acute pain in mice and triggers the release of neuropeptide calcitonin gene-related peptide (CGRP) from airway afferents. We find that PLpro-induced sneeze and pain requires the host TRPA1 ion channel that has been previously demonstrated to mediate pain, cough, and airway inflammation.7-9 Our findings are the first demonstration of a viral product that directly activates sensory neurons to trigger pain and airway reflexes and highlight a new role for PLpro and nociceptors in COVID-19.
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Affiliation(s)
- Sonali S. Mali
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA
| | - Ricardo Silva
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA
| | - Zhongyan Gong
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA
| | - Michael Cronce
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA
| | - Uyen Vo
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA
- Howard Hughes Medical Institute
| | - Cliff Vuong
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA
| | - Yalda Moayedi
- Pain Research Center, Department of Molecular Pathobiology, New York University College of Dentistry, New York, NY
| | - Jeffery S. Cox
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA
| | - Diana M. Bautista
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA
- Howard Hughes Medical Institute
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2
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Neumann D, Schneider EH, Seifert R. Analysis of Histamine Receptor Knockout Mice in Models of Inflammation. J Pharmacol Exp Ther 2013; 348:2-11. [DOI: 10.1124/jpet.113.204214] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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Evaluation of the immunity activity of glycyrrhizin in AR mice. Molecules 2012; 17:716-27. [PMID: 22241467 PMCID: PMC6268580 DOI: 10.3390/molecules17010716] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Revised: 12/29/2011] [Accepted: 12/29/2011] [Indexed: 02/08/2023] Open
Abstract
In this study, we evaluated effect of glycyrrhizin on immunity function in allergic rhinitis (AR) mice. The AR mice model were induced by dripping ovalbumin in physiological saline (2 mg mL−1, 10 μL) into the bilateral nasal cavities using a micropipette. After the AR model was induced, mice were randomly divided into six groups: the normal control, model, lycopene 20 mg kg−1 (as positive control drug) group, and glycyrrhizin 10, 20, 30 mg kg−1 groups. After the sensitization day 14, lycopene (20 mg/kg BW) and glycyrrhizin (10, 20 and 30 mg/kg BW) were given orally for 20 days once a day. Mice in the normal control and model groups were given saline orally once a day for 20 days. Results showed that glycyrrhizin treatment could dose-dependently significantly reduce blood immunoglobulin E (IgE), interleukin-4 (IL-4), interleukin-5 (IL-5), interleukin-6 (IL-6), nitrous oxide (NO), tumor necrosis factor-alpha (TNF-α) levels and nitrous oxide synthase (NOS) activity and enhance blood immunoglobulin A (IgA), immunoglobulin G (IgG), immunoglobulin M (IgM), interleukin-2 (IL-2) and interleukin-12 (IL-12) levels in AR mice. Furthermore, glycyrrhizin treatment could dose-dependently significantly enhance acetylcholinesterase (AchE) activity and reduce substance P (SP) level in peripheral blood and nasal mucosa of AR mice. We conclude that glycyrrhizin can improve immunity function in AR mice, suggesting a potential drug for the prevention and therapy of AR.
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Wang L, Wang T, Yang B, Chen Z, Yang H. Design, synthesis, and anti-allergic activities of novel (R)(-)-1-[(4-chlorophenyl)phenyl methyl]piperazine derivatives. Med Chem Res 2010. [DOI: 10.1007/s00044-010-9512-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Tsunemine S, Isa Y, Shimakawa M, Ohno H, Yamamura H. Effects of Bifidobacterium bifidum G9-1 on Nasal Symptoms in a Guinea Pig Model of Experimental Allergic Rhinitis. Biosci Microflora 2010; 30:1-7. [PMID: 25045310 PMCID: PMC4103633 DOI: 10.12938/bifidus.30.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2010] [Accepted: 10/29/2010] [Indexed: 12/31/2022] Open
Abstract
Recent studies of several animal models have shown beneficial effects of probiotics
against allergic responses. However, few reports have examined the effects of probiotics
on allergic nasal symptoms such as sneezing and nasal obstruction in animal models of
allergic rhinitis. This study evaluated the efficacy of Bifidobacterium
bifidum G9-1 (BBG9-1) on antigen-induced nasal symptoms using guinea pig models
of allergic rhinitis. Oral administration of BBG9-1 significantly inhibited
antigen-induced allergic nasal reactions such as sneezing and nasal obstruction. Our
results suggest that BBG9-1 may be useful for alleviating nasal symptoms in patients with
allergic rhinitis.
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Affiliation(s)
- Satoru Tsunemine
- Biofermin Kobe Research Institute, Biofermin Pharmaceutical Co., Ltd., 7-3-4 Higashi-machi, Ibukidai, Nishi-ku, Kobe 651-2242, Japan
| | - Yasuhiro Isa
- Biofermin Kobe Research Institute, Biofermin Pharmaceutical Co., Ltd., 7-3-4 Higashi-machi, Ibukidai, Nishi-ku, Kobe 651-2242, Japan
| | - Masaki Shimakawa
- Biofermin Kobe Research Institute, Biofermin Pharmaceutical Co., Ltd., 7-3-4 Higashi-machi, Ibukidai, Nishi-ku, Kobe 651-2242, Japan
| | - Hiroshi Ohno
- Biofermin Kobe Research Institute, Biofermin Pharmaceutical Co., Ltd., 7-3-4 Higashi-machi, Ibukidai, Nishi-ku, Kobe 651-2242, Japan
| | - Hideki Yamamura
- Biofermin Kobe Research Institute, Biofermin Pharmaceutical Co., Ltd., 7-3-4 Higashi-machi, Ibukidai, Nishi-ku, Kobe 651-2242, Japan
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Yokota E, Kuyama S, Ogawa M, Kamei C. Substance P is involved in the effect of histamine H3 receptor agonist, Sch 50971 on nasal allergic symptoms in mice. Int Immunopharmacol 2008; 8:1083-8. [DOI: 10.1016/j.intimp.2008.03.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2008] [Revised: 03/07/2008] [Accepted: 03/26/2008] [Indexed: 11/25/2022]
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Sunada Y, Nakamura S, Kamei C. Effects of Lactobacillus acidophilus strain L-55 on experimental allergic rhinitis in BALB/c mice. Biol Pharm Bull 2007; 30:2163-6. [PMID: 17978493 DOI: 10.1248/bpb.30.2163] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We investigated the effect of Lactobacillus acidophilus strain L-55 isolated from infant feces on experimental allergic rhinitis in BALB/c mice. The heat-treated cells of strain L-55 were orally administrated for 4 consecutive weeks to mice sensitized by ovalbumin (OVA), and nasal symptoms (sneezing and nasal rubbing) induced by OVA challenge were evaluated. Strain L-55 at doses of 1 and 10 mg cells/mouse significantly inhibited nasal symptoms by repeated administration over a period of 2 weeks. Furthermore, we measured the level of OVA-specific IgE titers in the serum by passive cutaneous anaphylaxis (PCA) reaction. PCA titers in the sera from mice administrated strain L-55 were significantly lowered compared with the control. These results suggest that oral administration of strain L-55 may be useful for alleviating the nasal symptoms of allergic rhinitis.
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Affiliation(s)
- Yosuke Sunada
- Fundamental Laboratory, Ohayo Dairy Products Co. Ltd., Okayama, Japan
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8
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Rahman MA, Inoue T, Ishikawa T, Yatsuzuka R, Ohtsu H, Kamei C. Involvement of chemical mediators in nasal allergic responses of HDC-KO mice. Eur J Pharmacol 2007; 567:245-51. [PMID: 17543300 DOI: 10.1016/j.ejphar.2007.01.082] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2006] [Revised: 01/23/2007] [Accepted: 01/25/2007] [Indexed: 10/23/2022]
Abstract
The present study was undertaken to investigate the involvement of chemical mediators in nasal allergic responses using histidine decarboxylase knockout (HDC-KO) mice. An allergic rhinitis model was developed in HDC-KO and wild-type mice by the intraperitoneal injection of ovalbumin, aluminum hydroxide gel and pertussis toxin. Five days later, they were boosted by a subcutaneous injection of ovalbumin into the back. From day 18 after the first immunization to day 39, intranasal sensitization with ovalbumin was performed every day and the severity of allergic rhinitis was observed by measuring nasal allergic responses and total IgE levels. It was found that the intranasal administration of antigen caused a significant increase of nasal sneezing and rubbing from day 25 to day 39 both in sensitized HDC-KO and wild-type mice. In addition, a significant elevation of total IgE levels in serum was also found both in sensitized HDC-KO and wild-type mice from day 18 to day 39 after the first immunization. L-733,060, a tachykinin NK(1) receptor antagonist at a dose of 10 mg/kg (s.c.), resulted in the dose-dependent inhibition of nasal allergic responses induced by antigen in both HDC-KO and wild-type mice. In addition, both chlorpheniramine at doses of 3 and 10 mg/kg (p.o.) and BW A868C at doses of 0.3 and 1 mg/kg (i.v.) also showed a dose-related reduction of the nasal allergic responses induced by antigen in sensitized wild-type mice. On the other hand, they had no effects on the nasal signs induced by antigen in HDC-KO mice. From these results, it was revealed that substance P induces nasal allergic responses in the mouse model of chronic allergic rhinitis through the activation of tachykinin NK(1) receptors. Therefore, it can be concluded that not only histamine, but also substance P and prostaglandin D(2), participated in the nasal allergic responses induced by antigen in mice.
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Affiliation(s)
- Md Ashequr Rahman
- Department of Medicinal Pharmacology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8530, Japan
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Suzuki M, Itoh M, Ohta N, Nakamura Y, Moriyama A, Matsumoto T, Ohashi T, Murakami S. Blocking of protease allergens with inhibitors reduces allergic responses in allergic rhinitis and other allergic diseases. Acta Otolaryngol 2006; 126:746-51. [PMID: 16803715 DOI: 10.1080/00016480500475625] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
CONCLUSIONS Allergic responses specific to the corresponding proteases were reduced by protease inhibitors, suggesting promise as potent treatments for allergic rhinitis and other allergic conditions. OBJECTIVE Allergic diseases, such as allergic rhinitis, are caused by the overproduction of IgE antibodies to various allergens. Many reported allergens are proteases that are cysteine, serine, aspartic (acid) proteases and metalloproteases. Conjugation of E64 inhibitor with cysteine protease allergens inhibits the IgE response to the same allergens. However, whether inhibitors of the other protease families reduce IgE levels and whether protease inhibitors reduce allergic symptoms remain controversial. Therefore, we compared the abilities of active and inhibitor-blocked inactive forms of proteases to generate IgE and allergic symptoms in this study to evaluate associations between the allergic response and protease inhibitors. MATERIALS AND METHODS We measured levels of IgE, IgG1, IgG2a, and IgG2b enzyme-specific antibodies, and counted frequency of sneezing and nasal rubbing behavior in mice immunized with active or inactive forms of bromelain, chymotrypsin, chymosin and collagenase (a cysteine protease, a serine protease, an aspartic protease and a metalloprotease, respectively). RESULTS All the inhibitors reduced IgE and IgG1 production in response to corresponding enzymes, and a cysteine protease inhibitor, E64, decreased nasal symptoms, such as sneezing and nasal rubbing.
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Affiliation(s)
- Motohiko Suzuki
- Department of Otorhinolaryngology, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan.
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Bryce PJ, Mathias CB, Harrison KL, Watanabe T, Geha RS, Oettgen HC. The H1 histamine receptor regulates allergic lung responses. J Clin Invest 2006; 116:1624-32. [PMID: 16680192 PMCID: PMC1448167 DOI: 10.1172/jci26150] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2005] [Accepted: 03/07/2006] [Indexed: 01/16/2023] Open
Abstract
Histamine, signaling via the type 1 receptor (H1R), has been shown to suppress Th2 cytokine production by in vitro cultured T cells. We examined the role of H1R in allergic inflammation in vivo using a murine asthma model. Allergen-stimulated splenic T cells from sensitized H1R-/- mice exhibited enhanced Th2 cytokine production. Despite this Th2 bias, allergen-challenged H1R-/- mice exhibited diminished lung Th2 cytokine mRNA levels, airway inflammation, goblet cell metaplasia, and airway hyperresponsiveness (AHR). Restoration of pulmonary Th2 cytokines in H1R-/- mice by intranasal IL-4 or IL-13 restored inflammatory lung responses and AHR. Further investigation revealed that histamine acts as a T cell chemotactic factor and defective T cell trafficking was responsible for the absence of lung inflammation. Cultured T cells migrated in response to histamine in vitro, but this was ablated by blockade of H1R but not H2R. In vivo, allergen-specific WT but not H1R-/- CD4+ T cells were recruited to the lungs of naive recipients following inhaled allergen challenge. H1R-/- T cells failed to confer airway inflammation or AHR observed after transfer of WT T cells. Our data establish a role for histamine and H1R in promoting the migration of Th2 cells into sites of allergen exposure.
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Affiliation(s)
- Paul J Bryce
- Division of Immunology, Children's Hospital, Harvard Medical School, Boston, Massachusetts, USA.
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Hossen MA, Inoue T, Shinmei Y, Fujii Y, Watanabe T, Kamei C. Role of Substance P on Histamine H3 Antagonist-Induced Scratching Behavior in Mice. J Pharmacol Sci 2006; 100:297-302. [PMID: 16603804 DOI: 10.1254/jphs.fpj05028x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
The purpose of the present study was to investigate the involvement of chemical mediators, other than histamine, in the scratching behavior induced by H(3) antagonists. Scratching behavior was induced by the histamine H(3) antagonists iodophenpropit and clobenpropit (10 nmol/site) when they were injected intradermally into the rostral part of the back of mast-cell-deficient (WBB6F1 W/W(v)) and wild-type (WBB6F1 +/+) mice. Subsequently, the effect of spantide, a tachykinin NK(1) antagonist, was measured for 60 min. The effects of the H(3) antagonists on in vitro histamine release from rat peritoneal mast cells were also investigated. When spantide was injected intradermally at a dose of 0.5 nmol/site, it significantly inhibited the response. Furthermore, iodophenpropit and clobenpropit (10(-6)-10(-8) M) did not induce histamine release in isolated rat peritoneal mast cells. Our results indicate that substance P is involved in the skin responses elicited by the histamine H(3) antagonists. Moreover, the fact that these histamine H(3) antagonists did not induce significant increases in the histamine release from rat peritoneal mast cells suggests that the histamine H(3) receptor may not be present in the peripheral cells considered in this study.
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Affiliation(s)
- Maria Alejandra Hossen
- Department of Medicinal Pharmacology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Japan
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Takubo M, Inoue T, Jiang S, Tsumuro T, Ueda Y, Yatsuzuka R, Segawa S, Watari J, Kamei C. Effects of Hop Extracts on Nasal Rubbing and Sneezing in BALB/c Mice. Biol Pharm Bull 2006; 29:689-92. [PMID: 16595900 DOI: 10.1248/bpb.29.689] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The effects of hop extracts (Humulus lupulus L.) on histamine release from rat peritoneal mast cells and human basophilic KU812 cells were studied. Hop water extract (HWE) and XAD-4 50% methanol fraction of HWE (MFH) inhibited histamine release from rat mast cells induced by compound 48/80 at concentrations of 100 and 10 mug/ml, respectively. Almost the same findings were observed with A23187-induced histamine release from KU812 cells. Next, we studied the effects of hop extracts on antigen-induced nasal rubbing and sneezing in sensitized BALB/c mice. HWE caused a significant inhibition of nasal rubbing and sneezing at a dose of 500 mg/kg. MFH also inhibited nasal rubbing and sneezing dose-dependently. A significant difference was observed from 100 mg/kg in nasal rubbing and 200 mg/kg in sneezing. The effects of both extracts became clear after repeated administration. HWE and MFH significantly inhibited both nasal rubbing and sneezing, respectively, after consecutive treatment for 15 d at smaller doses compared with single administration. This finding indicates that the active component of hop is included in MFH, which was absorbed to Amberlite XAD-4 and eluted with 50% methanol. These results clearly demonstrated that hop extracts may be effective in the relief of symptoms of allergic rhinitis.
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Affiliation(s)
- Miho Takubo
- Department of Medicinal Pharmacology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Japan
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Ashequr RM, Kamei C. Electroencephalogram and behavioral changes induced by histamine application into the nasal cavity and the effects of some H(1)-receptor antagonists. Int Immunopharmacol 2005; 5:1741-8. [PMID: 16102524 DOI: 10.1016/j.intimp.2005.06.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2005] [Revised: 04/14/2005] [Accepted: 06/01/2005] [Indexed: 11/17/2022]
Abstract
The present study was performed to measure the olfactory bulb with an electroencephalogram (EEG) to investigate the relationship between the EEG and behavioral changes of rats induced by the topical application of histamine into the nasal cavity. The effects of some H(1)-receptor antagonists on the EEG and behavioral changes induced by histamine were also studied. The topical application of histamine into the nasal cavity resulted in a significant and dose-dependent increase in the incidence of sneezing and nasal rubbing. The EEG spike at the olfactory bulb was also observed to be in parallel with the sneezing. In addition, there was an intimate relationship between the EEG spike and sneezing; however, no correlation was observed between the EEG spike and nasal rubbing. All the H(1)-receptor antagonists used in the present study caused an inhibition not only of sneezing but also of the EEG spike at the same dose level. These results suggested that the EEG spike observed in the olfactory bulb is an objective and reliable indication of sneezing induced by allergic rhinitis.
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Affiliation(s)
- Rahman Md Ashequr
- Department of Medicinal Pharmacology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Tsushima-naka 1-1-1, Okayama 700-8530, Japan
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Hossen MA, Shinmei Y, Jiang S, Takubo M, Tsumuro T, Murata Y, Sugiura M, Kamei C. Effect of Lo Han Kuo (Siraitia grosvenori Swingle) on nasal rubbing and scratching behavior in ICR mice. Biol Pharm Bull 2005; 28:238-41. [PMID: 15684476 DOI: 10.1248/bpb.28.238] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We studied the effect of Lo Han Kuo (Siraitia grosvenori Swingle) on histamine-induced nasal rubbing and compound 48/80-induced skin scratching behavior in ICR mice. An extract and glycoside (a complex of sweet components) of Lo Han Kuo were used in the study. Both the extract and glycoside caused no significant effect on nasal rubbing or scratching behavior, even at a dose of 1000 mg/kg when administered in a single dose. However, the effect of Lo Han Kuo became clear after repeated administration, and 300 and 1000 mg/kg of both extract and glycoside significantly inhibited nasal rubbing and skin scratching behavior after consecutive treatment for 4 weeks. Both the extract and glycoside inhibited the histamine release induced by compound 48/80 at concentrations of 300 and 1000 microg/ml. From these results, it is assumed that the inhibition of nasal rubbing and skin scratching behavior induced by Lo Han Kuo occurs through a mast cell-dependent mechanism.
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Affiliation(s)
- Maria Alejandra Hossen
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Okayama University, Okayama 700-8530, Japan
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Hossen MA, Fujii Y, Sugimoto Y, Kayasuga R, Kamei C. Histamine H3 receptors regulate vascular permeability changes in the skin of mast cell-deficient mice. Int Immunopharmacol 2004; 3:1563-8. [PMID: 14555281 DOI: 10.1016/s1567-5769(03)00009-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The participation of histamine H(3) receptors in the regulation of skin vascular permeability changes in mast cell-deficient mice was studied. Although intradermal injection of histamine H(3) antagonists, iodophenpropit and clobenpropit, at a dose of 100 nmol/site caused significant increases in skin vascular permeability in both mast cell-deficient (WBB6F1 W/W(v)) and wild-type (WBB6F1 +/+) mice, this response was significantly lower in mast cell-deficient mice than in the wild-type controls. Histamine also caused dose-related increases in skin vascular permeability in both wild-type and mast cell-deficient mice. Significant effects were observed at doses of 10 and 100 nmol/site, and no significant difference in skin vascular permeability was observed between mast cell-deficient and wild-type mice. However, histamine contents of dorsal skin in mast cell-deficient mice were significantly lower than in wild-type mice. In addition, the H(1) antagonists diphenhydramine and chlorpheniramine and the NK(1) antagonists, L-732,138 and L-733,060, were able to antagonize H(3) antagonist-induced skin vascular permeability. These results indicated that blockade of H(3) receptors by H(3) antagonists induce skin vascular permeability through mast cell-dependent mechanisms. In addition, histamine and, to a lesser extent substance P are involved in the reaction.
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Affiliation(s)
- Maria Alejandra Hossen
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Okayama University, Tsushima-naka 1-1-1, 700-8530, Okayama, Japan.
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Sugimoto Y, Nakamura Y, Hossen MA, Watanabe T, Kamei C. Evaluation of the effects of anti-pruritic drugs on scratch responses using histamine H1 receptor-deficient mice. Eur J Pharmacol 2003; 470:113-6. [PMID: 12787839 DOI: 10.1016/s0014-2999(03)01786-2] [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: 11/22/2022]
Abstract
The effects of anti-pruritic drugs on scratching behavior associated with passive cutaneous anaphylaxis in histamine H(1) receptor-deficient and wild-type mice were studied. Passive sensitization with mouse monoclonal anti-dinitrophenyl-immunoglobulin E (IgE) resulted in an increase in the incidence of scratching behavior induced by intravenous injection of dinitrophenyl-ovalbumin in both wild-type and histamine H(1) receptor-deficient mice. The histamine H(1) receptor antagonist diphenhydramine inhibited scratching behavior induced by antigen in passively sensitized wild-type mice, whereas no effect was observed in histamine H(1) receptor-deficient mice. On the other hand, oxatomide inhibited scratching behavior in both mice, although the effect in wild-type mice was more potent than that in histamine H(1) receptor-deficient mice. Tranilast inhibited scratching behavior with the same potency in both mice. We concluded that the scratching behavior associated with passive cutaneous anaphylaxis involves not only histamine H(1) receptors but also other chemical mediators. Furthermore, the results of the present study indicated that oxatomide has an antagonistic effect on histamine H(1) receptors as well as anti-pruritic effect in vivo.
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Affiliation(s)
- Yukio Sugimoto
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Okayama University, Tsushima-naka 1-1-1, Okayama 700-8530, Japan
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