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Shaha A, Mizuguchi H, Kitamura Y, Fujino H, Yabumoto M, Takeda N, Fukui H. Effect of Royal Jelly and Brazilian Green Propolis on the Signaling for Histamine H 1 Receptor and Interleukin-9 Gene Expressions Responsible for the Pathogenesis of the Allergic Rhinitis. Biol Pharm Bull 2018; 41:1440-1447. [PMID: 30175778 DOI: 10.1248/bpb.b18-00325] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The significant correlation between nasal symptom scores and level of histamine H1 receptor (H1R) mRNA in nasal mucosa was observed in patients with pollinosis, suggesting that H1R gene is an allergic disease sensitive gene. We demonstrated that H1R and interleukin (IL)-9 gene are the allergic rhinitis (AR)-sensitive genes and protein kinase Cδ (PKCδ) signaling and nuclear factor of activated T-cells (NFAT) signaling are involved in their expressions, respectively. Honey bee products have been used to treat allergic diseases. However, their pathological mechanism remains to be elucidated. In the present study, we investigated the mechanism of the anti-allergic effect of royal jelly (RJ) and Brazilian green propolis (BGPP). Treatment with RJ and BGPP decreased in the number of sneezing on toluene 2,4-diissocyanate (TDI)-stimulated rats. The remarkable suppression of H1R mRNA in nasal mucosa was observed. RJ and BGPP also suppressed the expression of IL-9 gene. RJ and BGPP suppressed phorbol-12-myristate-13-acetate-induced Tyr311 phosphorylation of PKCδ in HeLa cells. In RBL-2H3 cells, RJ and BGPP also suppressed NFAT-mediated IL-9 gene expression. These results suggest that RJ and BGPP improve allergic symptoms by suppressing PKCδ and NFAT signaling pathways, two important signal pathways for the AR pathogenesis, and suggest that RJ and BGPP could be good therapeutics against AR.
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Affiliation(s)
- Aurpita Shaha
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School
| | | | - Yoshiaki Kitamura
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School
| | - Hiromichi Fujino
- Department of Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School
| | | | - Noriaki Takeda
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School
| | - Hiroyuki Fukui
- Department of Molecular Studies for Incurable Diseases, Institute of Biomedical Sciences, Tokushima University Graduate School
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2
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Fujii T, Kitamura Y, Mizuguchi H, Okamoto K, Sanada N, Yamada T, Sugiyama M, Michinaga S, Kitayama M, Fukui H, Takeda N. Effects of irradiation with narrowband-ultraviolet B on up-regulation of histamine H 1 receptor mRNA and induction of apoptosis in HeLa cells and nasal mucosa of rats. J Pharmacol Sci 2018; 138:54-62. [PMID: 30301597 DOI: 10.1016/j.jphs.2018.08.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 08/21/2018] [Accepted: 08/28/2018] [Indexed: 01/01/2023] Open
Abstract
Narrowband-ultraviolet B (NB-UVB) phototherapy is used for the treatment of atopic dermatitis. Previously, we reported that irradiation with 200 mJ/cm2 of 310 nm NB-UVB suppressed phorbol-12-myristate-13-acetate (PMA)-induced up-regulation of histamine H1 receptor (H1R) gene expression without induction of apoptosis in HeLa cells. However, the effect of NB-UVB irradiation on nasal symptoms is still unclear. Here, we show that low dose irradiation with 310 nm NB-UVB alleviates nasal symptoms in toluene 2,4-diisocyanate (TDI)-sensitized allergy model rats. Irradiation with 310 nm NB-UVB suppressed PMA-induced H1R mRNA up-regulation in HeLa cells dose-dependently at doses of 75-200 mJ/cm2 and reversibly at a dose of 150 mJ/cm2 without induction of apoptosis. While, at doses of more than 200 mJ/cm2, irradiation with 310 nm NB-UVB induced apoptosis. Western blot analysis showed that the suppressive effect of NB-UVB irradiation on H1R gene expression was through the inhibition of ERK phosphorylation. In TDI-sensitized rat, intranasal irradiation with 310 nm NB-UVB at an estimated dose of 100 mJ/cm2 once a day for three days suppressed TDI-induced sneezes and up-regulation of H1R mRNA in nasal mucosa without induction of apoptosis. These findings suggest that repeated intranasal irradiation with low dose of NB-UVB could be clinically used as phototherapy of AR.
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Affiliation(s)
- Tatsuya Fujii
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8503, Japan
| | - Yoshiaki Kitamura
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8503, Japan.
| | - Hiroyuki Mizuguchi
- Laboratory of Pharmacology, Faculty of Pharmacy, Osaka Ohtani University, Osaka, 584-8540, Japan
| | - Kentaro Okamoto
- Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Nanae Sanada
- Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Takuya Yamada
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8503, Japan; Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Manabu Sugiyama
- Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Shotaro Michinaga
- Laboratory of Pharmacology, Faculty of Pharmacy, Osaka Ohtani University, Osaka, 584-8540, Japan
| | - Mika Kitayama
- Molecular Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Hiroyuki Fukui
- Molecular Studies for Incurable Diseases, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8503, Japan
| | - Noriaki Takeda
- Department of Otolaryngology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8503, Japan
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Zhang Q, Xiong Y, Li GB, Tang Q, Cao M, Huang JB, Xing M, Hu CP, Gong Y, Wang QH, Gao N, Zhang R. Xinqin exhibits the anti-allergic effect through the JAK2/STAT5 signaling pathway. JOURNAL OF ETHNOPHARMACOLOGY 2016; 193:466-473. [PMID: 27666014 DOI: 10.1016/j.jep.2016.09.045] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 09/17/2016] [Accepted: 09/21/2016] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Xinqin, a polyherbal medicine, is an important traditional Chinese herbal formula used in traditional oriental medicine for treatment of allergic rhinitis (AR). The formula is based on the Chinese Pharmacopoeia AIM OF THE STUDY: Previously, Xinqin exhibited potent anti-allergic effect in a guinea pig model of AR. In this study, we explored the molecular mechanism of the anti-allergic effect mediated by Xinqin. MATERIALS AND METHODS AR was induced in guinea pigs (Hartley) with toluene-2, 4-diisocyanate (TDI) in vivo and in HMC-1 mast cells with A23187/phorbol 12-myristate-13-acetate (PMA) in vitro. The releases of allergic inflammatory mediators such as histamine, leukotriene (LT) D4, immunoglobulin (Ig) E, TNF-α, and IL-6 were analyzed for allergy. The mast cell degranulation was displayed in HMC-1 mast cells. The activities of janus protein kinase 2 (JAK2), signal transduction and activator of transcription 5 (STAT5) and suppressor of cytokine signaling 3 (SOCS3) were evaluated by Western blot. RESULTS Treatment with Xinqin resulted in AR symptoms and decreases in levels of histamine, LTD4, IgE, TNF-α, and IL-6 in serum of guinea pig model of AR and in A23187/PMA-stimulated HMC-1 mast cells. Treatment with Xinqin also inhibited cell degranulation in A23187/PMA-stimulated HMC-1 mast cells. The JAK2/STAT5 signaling pathway could play an important role in the anti-allergic activity mediated by Xinqin. CONCLUSIONS Xinqin exerts the anti-allergic effect by modulating mast cell-mediated allergic responses by down-regulating JAK2/STAT5 signaling pathway. Results from this study provide a mechanistic basis for the application of Xinqin in the treatment of AR.
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Affiliation(s)
- Qian Zhang
- Department of Pharmacy, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Ying Xiong
- Department of Pharmacy, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Guo-Bing Li
- Department of Pharmacy, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Qin Tang
- Department of Pharmacy, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Min Cao
- Department of Pharmacy, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Jing-Bin Huang
- Department of Pharmacy, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Mao Xing
- Department of Pharmacy, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Chang-Peng Hu
- Department of Pharmacy, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Ya Gong
- Department of Pharmacy, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Qing-Hua Wang
- Department of Pharmacy, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Ning Gao
- College of Pharmacy, Third Military Medical University, Chongqing, China.
| | - Rong Zhang
- Department of Pharmacy, Xinqiao Hospital, Third Military Medical University, Chongqing, China.
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Shill MC, Mizuguchi H, Karmakar S, Kadota T, Mukherjee PK, Kitamura Y, Kashiwada Y, Nemoto H, Takeda N, Fukui H. A novel benzofuran, 4-methoxybenzofuran-5-carboxamide, from Tephrosia purpurea suppressed histamine H 1 receptor gene expression through a protein kinase C-δ-dependent signaling pathway. Int Immunopharmacol 2016; 30:18-26. [DOI: 10.1016/j.intimp.2015.11.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 11/16/2015] [Accepted: 11/17/2015] [Indexed: 11/24/2022]
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5
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Mizuguchi H, Miyagi K, Terao T, Sakamoto N, Yamawaki Y, Adachi T, Ono S, Sasaki Y, Yoshimura Y, Kitamura Y, Takeda N, Fukui H. PMA-induced dissociation of Ku86 from the promoter causes transcriptional up-regulation of histamine H(1) receptor. Sci Rep 2012; 2:916. [PMID: 23209876 PMCID: PMC3512088 DOI: 10.1038/srep00916] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Accepted: 10/24/2012] [Indexed: 12/05/2022] Open
Abstract
Histamine H1 receptor (H1R) gene is up-regulated in patients with allergic rhinitis, and its expression level strongly correlates with the severity of symptoms. However, the mechanism underlying this remains unknown. Here we report the mechanism of H1R gene up-regulation. The luciferase assay revealed the existence of two promoter regions, A and B1. Two AP-1 and one Ets-1 bound to region A, while Ku86, Ku70, and PARP-1 bound to region B1. Ku86 was responsible for DNA binding and poly(ADP-ribosyl)ated in response to phorbol-12-myristate-13-acetate stimulation, inducing its dissociation from region B1 that is crucial for promoter activity. Knockdown of Ku86 gene enhanced up-regulation of H1R gene expression. Experiments using inhibitors for MEK and PARP-1 indicate that regions A and B1 are downstream regulatory elements of the PKCδ/ERK/PARP-1 signaling pathway. Data suggest a novel mechanism for the up-regulation of H1R gene expression.
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Affiliation(s)
- Hiroyuki Mizuguchi
- Department of Molecular Pharmacology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima 770-8505, Japan
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Mizuguchi H, Ono S, Hattori M, Fukui H. Inverse agonistic activity of antihistamines and suppression of histamine H1 receptor gene expression. J Pharmacol Sci 2011; 118:117-121. [PMID: 22186623 DOI: 10.1254/jphs.11177sc] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2011] [Accepted: 11/15/2011] [Indexed: 10/14/2022] Open
Abstract
Histamine H(1) receptor (H1R) expression influences the severity of allergy symptoms. We examined the effect of inverse agonists on H1R gene expression. Two inverse agonists (carebastine and mepyramine), but not the neutral antagonist oxatomide, decreased inositol phosphate accumulation. The inverse agonists also decreased H1R gene expression and down-regulated H1R mRNA below basal expression, while basal H1R mRNA expression was maintained after oxatomide treatment. These results suggest that inverse agonists more potently alleviate allergy symptoms by not only inhibiting stimulus-induced up-regulation of H1R gene expression but also by suppressing basal histamine signaling through their inverse agonistic activity.
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Affiliation(s)
- Hiroyuki Mizuguchi
- Department of Molecular Pharmacology, Institute of Health Biosciences, The University of Tokushima Graduate School, Japan
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7
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Albizia lebbeck suppresses histamine signaling by the inhibition of histamine H1 receptor and histidine decarboxylase gene transcriptions. Int Immunopharmacol 2011; 11:1766-72. [PMID: 21782040 DOI: 10.1016/j.intimp.2011.07.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2011] [Revised: 06/21/2011] [Accepted: 07/06/2011] [Indexed: 11/22/2022]
Abstract
Histamine plays major roles in allergic diseases and its action is mediated mainly by histamine H(1) receptor (H1R). We have demonstrated that histamine signaling-related H1R and histidine decarboxylase (HDC) genes are allergic diseases sensitive genes and their expression level affects severity of the allergic symptoms. Therefore, compounds that suppress histamine signaling should be promising candidates as anti-allergic drugs. Here, we investigated the effect of the extract from the bark of Albizia lebbeck (AL), one of the ingredients of Ayruvedic medicines, on H1R and HDC gene expression using toluene-2,4-diisocyanate (TDI) sensitized allergy model rats and HeLa cells expressing endogenous H1R. Administration of the AL extract significantly decreased the numbers of sneezing and nasal rubbing. Pretreatment with the AL extract suppressed TDI-induced H1R and HDC mRNA elevations as well as [(3)H]mepyramine binding, HDC activity, and histamine content in the nasal mucosa. AL extract also suppressed TDI-induced up-regulation of IL-4, IL-5, and IL-13 mRNA. In HeLa cells, AL extract suppressed phorbol-12-myristate-13-acetate- or histamine-induced up-regulation of H1R mRNA. Our data suggest that AL alleviated nasal symptoms by inhibiting histamine signaling in TDI-sensitized rats through suppression of H1R and HDC gene transcriptions. Suppression of Th2-cytokine signaling by AL also suggests that it could affect the histamine-cytokine network.
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8
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Dev S, Mizuguchi H, Das AK, Baba Y, Fukui H. Transcriptional microarray analysis reveals suppression of histamine signaling by Kujin alleviates allergic symptoms through down-regulation of FAT10 expression. Int Immunopharmacol 2011; 11:1504-9. [PMID: 21601015 DOI: 10.1016/j.intimp.2011.05.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2011] [Revised: 03/29/2011] [Accepted: 05/03/2011] [Indexed: 01/05/2023]
Abstract
Previously, we have shown that hot water extract from Kujin, the dried roots of Sophora flavescens alleviates allergic symptoms by suppressing histamine signaling at the transcription level in toluene 2,4-diisocyanate (TDI)-sensitized rats. To know more insights into the mechanism of the anti-allergic action of Kujin, we carried out the microarray analysis to explore genes that were up-regulated by treatment with TDI and also were suppressed these up-regulated gene expression by Kujin. Microarray analysis revealed the substantial up-regulation of FAT10 (also called UbD) mRNA due to TDI sensitization and Kujin extract significantly suppressed this up-regulation. FAT10 is an ubiquitin like protein having an active role in the immune system and is induced by proinflammatory cytokines. Activation of NF-κB by FAT10 also has been reported. However, the role of FAT10 in allergic pathogenesis remains unknown. Here we investigated the correlation of FAT10-NF-κB signaling with histamine signaling in TDI-sensitized rats. Real time RT-PCR analysis confirmed that treatment with TDI up-regulated FAT10 mRNA expression in the nasal mucosa of TDI-sensitized rats and Kujin extract suppressed this elevation. Treatment with H(1)-antihistamines suppressed the TDI-induced up-regulation of FAT10 mRNA expression in TDI-sensitized rats. Direct administration of histamine into the nasal cavity of non-TDI-treated normal rats up-regulated the expression of FAT10 mRNA. Our data suggest that Kujin might alleviate allergic symptoms by inhibition of NF-κB activation through suppression of histamine-induced up-regulation of FAT10 mRNA expression.
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Affiliation(s)
- Shrabanti Dev
- Department of Molecular Pharmacology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
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9
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Mahajan SG, Mali RG, Mehta AA. Effect of Moringa oleifera Lam. seed extract on toluene diisocyanate-induced immune-mediated inflammatory responses in rats. J Immunotoxicol 2009; 4:85-96. [PMID: 18958717 DOI: 10.1080/15476910701337472] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
Moringa oleifera Lam. is a small tree cultivated throughout India. We have investigated the effect of ethanolic extract of seeds of Moringa oleifera (MOEE, an herbal remedy) on the potential prevention of immune-mediated inflammatory responses in toluene diisocyanate (TDI as antigen)-induced asthma in Wistar rats. Rats were divided into five different groups (n = 8/group): Group-I = unsensitized control; Group-II = TDI control/vehicle; Group-III = dexamethasone (DXM) 2.5 mg/kg; and, Groups IV and V = 100 mg/kg and 200 mg/kg body weight [BW] of MOEE, respectively. All rats (except unsensitized controls) were sensitized by intranasal application of 10% TDI to induce airway hypersensitivity. Animals in Groups II-V were given their respective drug treatment per os from 1 wk prior to initiation of sensitization until the day of final provocation with 5% TDI. After this last challenge, all rats were examined for hyperreactivity symptoms and then sacrificed to determine their total and differential leucocytes in blood and bronchoalveolar (BAL) fluid and levels of TNF proportional, variant, IL-4, and IL-6 in their BAL and serum. Homogenates of one lung lobe from each animal were utilized to assess oxidative stress; a separate lobe underwent histologic examination to assess airway inflammatory status. The results suggest that asthmatic symptoms were found in TDI control rats only, while both MOEE- and DXM-treated rats did not manifest any airway abnormality. In MOEE- and DXM-treated rats, neutrophil and eosinophil levels in the blood were decreased significantly; levels of total cells and each different cell in their BAL fluid were markedly decreased as compared to those in TDI controls. TNF alpha, IL-4, and IL-6 were predominant in serum as well as in BAL fluids in TDI controls, but these levels were reduced significantly by MOEE treatment. The antioxidant activity in relation to antiinflammatory activity of the extract and histopathological observations also reflected a protective effect. Based on the above findings and observations, it can be concluded that Moringa oleifera may possess some beneficial properties that act against chemically stimulated immune-mediated inflammatory responses that are characteristic of asthma in the rat.
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Affiliation(s)
- Shailaja G Mahajan
- Department of Pharmacology, L.M. College of Pharmacy, Ahmedabad, Gujarat, India
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10
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Shahriar M, Mizuguchi H, Maeyama K, Kitamura Y, Orimoto N, Horio S, Umehara H, Hattori M, Takeda N, Fukui H. Suplatast tosilate inhibits histamine signaling by direct and indirect down-regulation of histamine H1 receptor gene expression through suppression of histidine decarboxylase and IL-4 gene transcriptions. THE JOURNAL OF IMMUNOLOGY 2009; 183:2133-41. [PMID: 19596986 DOI: 10.4049/jimmunol.0901058] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Allergic rhinitis (AR) is an inflammatory disorder typified by symptoms such as sneezing, congestion, and rhinorrhea. Histamine plays important roles in eliciting AR symptoms. Up-regulation of the histamine H(1) receptor (H1R) and histidine decarboxylase (HDC) mRNAs was observed in AR patients. Th2 cytokines are also involved in the pathogenesis of AR. We examined the effect of suplatast tosilate on nasal symptoms, and H1R, HDC, and IL-4 gene expression using toluene-2,4-diisocyanate (TDI)-sensitized rats and HeLa cells expressing endogenous H1R. Provocation with TDI increased nasal symptoms, HDC activity, the histamine content of nasal lavage fluid, and the expression of H1R, HDC, and IL-4 mRNAs in TDI-sensitized rats. Pretreatment with suplatast for 2 wk significantly suppressed TDI-induced nasal symptoms and elevation of H1R, HDC, and IL-4 mRNAs. Suplatast also suppressed HDC activity in the nasal mucosa and the histamine content of the nasal lavage fluid. Bilateral injection of IL-4 into the nasal cavity of normal rats up-regulated H1R mRNA, while intranasal application of histamine up-regulated IL-4 mRNA. Suplatast suppressed IL-4-induced up-regulation of H1R mRNA in HeLa cells. However, it did not inhibit histamine-induced H1R mRNA elevation. These results suggest that suplatast alleviates nasal symptoms by inhibiting histamine signaling in TDI-sensitized rats through the suppression of histamine- and IL-4-induced H1R gene expression by the inhibitions of HDC and IL-4 gene transcriptions, respectively.
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Affiliation(s)
- Masum Shahriar
- Department of Molecular Pharmacology, Institute of Health-Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
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11
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Dev S, Mizuguchi H, Das AK, Maeyama K, Horinaga S, Kato S, Tamada M, Hattori M, Umehara H, Fukui H. Kujin suppresses histamine signaling at the transcriptional level in toluene 2,4-diisocyanate-sensitized rats. J Pharmacol Sci 2009; 109:606-17. [PMID: 19352071 DOI: 10.1254/jphs.09003fp] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
Kujin, the dried root of Sophorae flavescensis, has been used in Chinese folklore medicine against allergy. Evaluation of its anti-allergic potential as well as its mechanism of action has rarely been established. We investigated the effect of Kujin on toluene-2,4-diisocyanate (TDI)-induced allergic behavior and related histamine signaling including mRNA levels of histamine H(1) receptor (H1R) and histidine decarboxylase (HDC), H1R and HDC activities, and histamine content in rat nasal mucosa. We also investigated the effect of Kujin on the mRNA levels of helper T cell type 2 (Th2)-cytokine genes closely related to histamine signaling. TDI provocation caused acute allergic symptoms accompanied with up-regulations of H1R and HDC mRNAs and increases in HDC activity, histamine content, and [(3)H]mepyramine binding activity in the nasal mucosa, all of which were significantly suppressed by pretreatment with Kujin for 3 weeks. Kujin also suppressed the TDI-induced IL-4 and IL-5 mRNA elevations. These data suggest that oral administration of Kujin showed anti-allergic activity through suppression of histamine signaling by the inhibition of TDI-induced H1R and HDC mRNA elevations followed by decrease in H1R, HDC protein level, and histamine content in the nasal mucosa of TDI-sensitized rats. Suppression of Th2-cytokine signaling by Kujin also suggests that it could affect the histamine-cytokine network.
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Affiliation(s)
- Shrabanti Dev
- Department of Molecular Pharmacology, Institute of Health-Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
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12
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Mizuguchi H, Hatano M, Matsushita C, Umehara H, Kuroda W, Kitamura Y, Takeda N, Fukui H. Repeated pre-treatment with antihistamines suppresses [corrected] transcriptional up-regulations of histamine H(1) receptor and interleukin-4 genes in toluene-2,4-diisocyanate-sensitized rats. J Pharmacol Sci 2008; 108:480-6. [PMID: 19075512 DOI: 10.1254/jphs.08222fp] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
Antihistamines are effective for treatment of seasonal nasal allergy. Recently, prophylactic treatment with antihistamines in patients with pollinosis was reported to be more effective when started before the pollen season. The administration with antihistamines from 2 to 6 weeks before onset of the pollen season is recommended for management of allergic rhinitis in Japan. To determine the reason for the effectiveness of prophylactic treatment with antihistamines, the effects of repeated pre-treatment with antihistamines before provocation with toluene 2,4-diisocyanate (TDI) on their nasal allergy-like behavior and up-regulations of histamine H(1) receptors (H1R) and interleukin (IL)-4 mRNAs in their nasal mucosa were examined. Provocation with TDI induced sneezing and up-regulations of H1R and IL-4 mRNAs in the nasal mucosa of TDI-sensitized rats. Repeated pre-treatments with antihistamines including epinastine, olopatadine, or d-chlorpheniramine for 1 to 5 weeks before provocation with TDI suppressed TDI-induced sneezing and the up-regulations of H1R and IL-4 mRNAs in the nasal mucosa more than their administrations once or for 3 days before TDI provocation. Our data indicate that repeated pre-treatment with antihistamines before provocation with TDI is more effective than their single treatment in reducing nasal allergy-like behavior by causing additional suppression of up-regulations of H1R and IL-4 mRNAs in the nasal mucosa.
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Affiliation(s)
- Hiroyuki Mizuguchi
- Department of Molecular Pharmacology, Institute of Health-Biosciences, The University of Tokushima Graduate School, Japan
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Fukui H. Progress in allergy signal research on mast cells: up-regulation of histamine signal-related gene expression in allergy model rats. J Pharmacol Sci 2008; 106:325-31. [PMID: 18360087 DOI: 10.1254/jphs.fm0070184] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
Brown Norway allergy model rats sensitized to toluene 2,4-diisocyanate (TDI) were developed. Histamine H(1) receptor mRNA level was elevated in nasal mucosa of allergy model rats after the provocation with TDI, which was followed by H(1)-receptor up-regulation. Elevation of histamine H(1) receptor mRNA was partially suppressed by d-chlorpheniramine and olopatadine, antihistamines. Histamine induced increase in histamine H(1) receptor gene expression in vitro, and the protein kinase C-delta isoform was suggested to mediate the gene expression. On the other hand, elevation of histamine H(1) receptor mRNA was completely suppressed by dexamethasone in allergy model rats. Provocation with TDI also induced mRNA elevation of histidine decarboxylase, a sole histamine-forming enzyme, followed by the increase of both HDC activity and histamine content in nasal mucosa of allergy model rats. HDC mRNA elevation and increase in both HDC activity and histamine level were almost completely suppressed by dexamethasone. These observations suggest that histamine H(1) receptor up-regulation and increase in histamine level play an important role in allergy through the regulation of histamine signaling.
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Affiliation(s)
- Hiroyuki Fukui
- Department of Molecular Pharmacology, Institute of Health Biosciences, The University of Tokushima Graduate School, Japan.
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Das AK, Yoshimura S, Mishima R, Fujimoto K, Mizuguchi H, Dev S, Wakayama Y, Kitamura Y, Horio S, Takeda N, Fukui H. Stimulation of histamine H1 receptor up-regulates histamine H1 receptor itself through activation of receptor gene transcription. J Pharmacol Sci 2007; 103:374-82. [PMID: 17409634 DOI: 10.1254/jphs.fp0061411] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
Histamine is a major mediator in allergy acting mainly through the histamine H(1) receptor (H1R). Although H1R up-regulation has been suggested as an important step for induction of allergic symptoms, little is known about the regulation of H1R level. Here we report that the activation of H1R up-regulates H1R through augmentation of H1R mRNA expression in HeLa cells. Histamine stimulation significantly increased both H1R promoter activity and mRNA level without alteration in mRNA stability. H1R protein was also up-regulated by histamine. An H1R antagonist but not histamine H(2) receptor antagonist blocked histamine-induced up-regulation of both promoter activity and mRNA expression. A protein kinase C (PKC) activator, phorbol-12-myristate-13-acetate, increased H1R mRNA expression, whereas an activator of PKA or PKG (8-Br-cAMP or 8-Br-cGMP, respectively) did not. Furthermore, histamine-induced up-regulation of both promoter activity and mRNA level were completely suppressed by the PKC inhibitor Ro-31-8220. H1R antagonists have long been thought to block H1R and inhibit immediate allergy symptoms. In addition to this short-term effect, our data propose their long-term inhibitory effect against allergic diseases by suppressing PKC-mediated H1R gene transcription. This finding provides new insights into the therapeutic target of H1R antagonist in allergic diseases.
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Affiliation(s)
- Asish K Das
- Department of Molecular Pharmacology, Graduate School of Health Biosciences, The University of Tokushima, Japan
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15
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Kitamura Y, Das AK, Murata Y, Maeyama K, Dev S, Wakayama Y, Kalubi B, Takeda N, Fukui H. Dexamethasone suppresses histamine synthesis by repressing both transcription and activity of HDC in allergic rats. Allergol Int 2006; 55:279-86. [PMID: 17075268 DOI: 10.2332/allergolint.55.279] [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] [Received: 11/11/2005] [Accepted: 02/28/2006] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Histamine synthesized by histidine decarboxylase (HDC) from L-histidine is a major chemical mediator in the development of nasal allergy which is characterized by nasal hypersensitivity. However the regulatory mechanism of histamine synthesis by HDC remains to be elucidated. The objectives of the present study were to examine the changes of histamine content, HDC activity and HDC mRNA expression in the nasal mucosa of allergy model rats sensitized by the exposure to toluene diisocyanate (TDI) and to investigate the effect of dexamethasone on the above mentioned allergic parameters. METHODS Rats were sensitized and provocated by TDI and the nasal allergy-like behaviors were scored during a 10 minute period after provocation. Histamine content and HDC activity in the nasal mucosa were determined using fluorometric high performance liquid chromatography. The expression of HDC mRNA in nasal mucosa was determined using real-time quantitative reverse transcriptase-polymerase chain reaction (RT-PCR). RESULTS In TDI-sensitized rats, nasal allergy-like behaviors such as sneezing and watery rhinorrhea were induced. Histamine content, HDC activity and HDC mRNA expression in nasal mucosa were also significantly increased after TDI provocation. Pretreatment with dexamethasone significantly suppressed nasal allergy-like behaviors, up-regulation of histamine content, HDC activity and HDC mRNA induced by TDI in TDI-sensitized rats. CONCLUSIONS These findings indicate that increased synthesis of histamine through up-regulation of HDC gene expression and HDC activity in nasal mucosa plays an important role in the development of nasal hypersensitivity. Repression of HDC gene expression and HDC activity by dexamethasone may underlie its therapeutic effect in the treatment of allergy.
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Affiliation(s)
- Yoshiaki Kitamura
- Department of Otolaryngology, Graduate School of Health-Biosciences, The University of Tokushima, Tokushima, Japan
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16
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Zheng K, Ariizumi M, Todoriki H, Shinjo M. Cytokine Production by Splenocytes and Thymocytes in Mice after Intranasal Exposure to Toluene Diisocyanate. J Occup Health 2006. [DOI: 10.1539/joh.40.279] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Kui‐Cheng Zheng
- Department of Preventive MedicineSchool of Medicine, University of the Ryukyus
| | - Makoto Ariizumi
- Department of Preventive MedicineSchool of Medicine, University of the Ryukyus
| | - Hidemi Todoriki
- Department of Preventive MedicineSchool of Medicine, University of the Ryukyus
| | - Masaki Shinjo
- Department of Preventive MedicineSchool of Medicine, University of the Ryukyus
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17
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Kouadio K, Zheng KC, Tuekpe MKN, Todoriki H, Ariizumi M. Airway inflammatory and immunological events in a rat model exposed to toluene diisocyanate. Food Chem Toxicol 2005; 43:1281-8. [PMID: 15950818 DOI: 10.1016/j.fct.2005.03.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2004] [Revised: 03/01/2005] [Accepted: 03/07/2005] [Indexed: 11/22/2022]
Abstract
To investigate the inflammatory and immunological events in the airway induced by a short period of repeated exposure to toluene diisocyanate (TDI), an animal model was established, which resembled the industrial field exposure. After whole body exposure of Wistar rats to 0.38 and 1.20 ppm TDI vapor 4h a day for five consecutive days in a glass chamber, bronchoalveolar lavage (BAL) was performed. BAL fluid cellular and cytokine contents were then determined. Histopathological examinations were also carried out on the lungs. The TDI vapor exposure resulted in airway symptoms similar to those in occupational asthma. BAL fluid cellular analysis and lung histopathological examination revealed that inflammatory response was characterized by marked eosinophil infiltration of the airways. The cytokine assay revealed significant production of IL-4 in the airways of the TDI exposed rats as compared to the control rats. These findings indicated that a short period of repeated exposure to TDI vapor may cause respiratory hypersensitivity in which airway inflammatory and immunological events represented by eosinophil infiltration and Th2 cytokines may play an important role. Also, this animal model may be suitable for exploring the mechanism underlying TDI-induced occupational asthma.
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Affiliation(s)
- Kouame Kouadio
- Department of Environmental and Preventive Medicine, School of Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa 903-0215, Japan.
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18
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Fukui H. [Two regulatory mechanisms of histamine H1 receptor expression and their clinical significance]. Nihon Yakurigaku Zasshi 2005; 125:245-50. [PMID: 15997159 DOI: 10.1254/fpj.125.245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
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19
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Im GJ, Hwang CS, Jung HH. Quantitative expression levels of regulated on activation, normal T cell expressed and secreted and eotaxin transcripts in toluene diisocyanate-induced allergic rats. Acta Otolaryngol 2005; 125:370-7. [PMID: 15823807 DOI: 10.1080/00016480510003156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
CONCLUSION These results suggest that eotaxin may play a predominant role in controlling antigen-induced eosinophil recruitment into tissue. Objective To investigate the expression levels of regulated on activation, normal T cell expressed and secreted (RANTES) mRNA and eotaxin mRNA in the nasal mucosa of toluene diisocyanate (TDI)-induced allergic rats and to evaluate which of them is primarily related to selective eosinophilic infiltration by comparing their expression levels with the numbers of infiltrated eosinophils and vascular cell adhesion molecule-1 (VCAM-1). MATERIAL AND METHODS We quantified the expression levels of two strong eosinophilic CC chemokines (RANTES and eotaxin) and VCAM-1 at mRNA levels in the nasal mucosa of TDI-induced allergic rats using competitive polymerase chain reaction and compared their expression levels with the number of infiltrated eosinophils. RESULTS The number of infiltrated eosinophils was significantly increased between 3 h and Day 4 in TDI-induced allergic rats, but had decreased by Day 5. VCAM-1 mRNA expression was also increased between 3 h and Day 4. The number of infiltrated eosinophils correlated with the expression levels of VCAM-1 mRNA (p < 0.01). In contrast, expression of RANTES mRNA and eotaxin mRNA was increased between 3 h and Day 2, peaked between Days 1 and 2 and then declined. Although the expression of both chemokines correlated with the numbers of infiltrated eosinophils (p < 0.01), peak expression levels of eotaxin mRNA were 14-fold higher than baseline levels whereas RANTES mRNA expression increased 3-fold.
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MESH Headings
- Animals
- Asthma/chemically induced
- Asthma/genetics
- Asthma/immunology
- Chemokine CCL11
- Chemokine CCL5/genetics
- Chemokines, CC/genetics
- Eosinophilia/chemically induced
- Eosinophilia/genetics
- Eosinophilia/immunology
- Gene Expression Regulation/drug effects
- Gene Expression Regulation/immunology
- Leukocyte Count
- Lymphocyte Activation/drug effects
- Lymphocyte Activation/genetics
- Lymphocyte Activation/immunology
- Male
- Nasal Mucosa/drug effects
- Nasal Mucosa/immunology
- RNA, Messenger/genetics
- Rats
- Rats, Sprague-Dawley
- Respiratory Hypersensitivity/chemically induced
- Respiratory Hypersensitivity/genetics
- Respiratory Hypersensitivity/immunology
- Reverse Transcriptase Polymerase Chain Reaction
- Rhinitis, Allergic, Perennial/chemically induced
- Rhinitis, Allergic, Perennial/genetics
- Rhinitis, Allergic, Perennial/immunology
- T-Lymphocytes/drug effects
- T-Lymphocytes/immunology
- Toluene 2,4-Diisocyanate/immunology
- Toluene 2,4-Diisocyanate/toxicity
- Vascular Cell Adhesion Molecule-1/genetics
- beta 2-Microglobulin/genetics
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Affiliation(s)
- Gi Jung Im
- Department of Otolaryngology--Head & Neck Surgery, College of Medicine, Sungbuk-Ku, Seoul, South Korea
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20
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Zheng K, Adjei AA, Shinjo M, Shinjo S, Todoriki H, Ariizumi M. Effect of dietary vitamin E supplementation on murine nasal allergy. Am J Med Sci 1999; 318:49-54. [PMID: 10408761 DOI: 10.1097/00000441-199907000-00008] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Although many studies have reported the effects of dietary vitamin E on the immune response, none so far has assessed its role in nasal allergy. METHODS Female BALB/c mice were randomized into two groups and fed a 20% casein diet (control group, 50 mg vitamin E/kg diet) or this diet supplemented with 535 mg vitamin E/kg diet (vitamin E group, 585 mg vitamin E/kg diet) for 4 weeks. During the fifth week, the mice in each group were divided into two subgroups to form a total of four treatment groups: group A (control), group B [control + toluene diisocyanate (TDI) sensitization], group C (vitamin E supplementation), and group D (vitamin E supplementation + TDI sensitization). Groups B and D were treated with two courses of intranasal application of 5% TDI in ethyl acetate, whereas groups A and C were treated with ethyl acetate alone. A week after second sensitization all groups were provoked by applying 2.5% of TDI in the vehicle and nasal allergic responses were observed for 10 minutes. Splenic lymphoproliferation, splenic cell cytokines, and the total serum IgE were measured. RESULTS Members of group D had lower (P < 0.01) scores of nasal response and sneezed less frequently (P < 0.01) than those of group B. Similarly, splenic lymphoproliferation and production of IL-4 and IL-5 as well as the total serum IgE levels were lower (P < 0.01) in group D than in group B. CONCLUSIONS The results indicate that higher doses of vitamin E supplementation may suppress nasal allergic responses.
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Affiliation(s)
- K Zheng
- Department of Preventive Medicine, School of Medicine, University of the Ryukyus, Nishihara, Okinawa, Japan.
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21
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Zheng KC, Shinjo M, Todoriki H, Ariizumi M, Shinjo S, Adjei AA. Effect of Dietary Vitamin E Supplementation on Murine Nasal Allergy. Am J Med Sci 1999. [DOI: 10.1016/s0002-9629(15)40572-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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22
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Hirata N, Takeuchi K, Ukai K, Sakakura Y. Expression of histidine decarboxylase messenger RNA and histamine N-methyltransferase messenger RNA in nasal allergy. Clin Exp Allergy 1999; 29:76-83. [PMID: 10051705 DOI: 10.1046/j.1365-2222.1999.00345.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Histamine is an important chemical mediator in allergic rhinitis. Histamine is synthesized by L-histidine, catalysed by L-histidine decarboxylase (HDC) and metabolized mainly by histamine N-methyltransferase (HMT). The patients with allergic rhinitis may have altered histamine metabolism in the nasal tissue. OBJECTIVE The objective was to compare the expression of HDC mRNA and HMT mRNA in nasal mucosa with normal individuals and patients with allergic rhinitis. METHODS We extracted RNA from scrapings of inferior turbinate mucosa of 11 patients with allergic rhinitis and from 11 normal subjects and from surgically dissected inferior turbinate mucosa of 11 patients. HDC, HMT and beta-actin mRNA were amplified by reverse transcription-polymerase chain reaction (RT-PCR). RESULTS The mean +/- SD of HDC/beta-actin ratios were 0.58 +/- 0.28 for the scrapings of normal subjects, 0.93 +/- 0.38 for the scrapings of the patients with allergic rhinitis and 1.41 +/- 0.26 for the inferior turbinates of the patients with allergic rhinitis. The mean +/- SD of HMT/beta-actin ratios were 1.66 +/- 0.27 for the scrapings of normal subjects, 0.93 +/- 0.20 for the scrapings of the patients with allergic rhinitis and 0.65 +/- 0.28 for the inferior turbinates of the patients with allergic rhinitis. The differences among the three groups were statistically significant. CONCLUSIONS Increased HDC mRNA expression and decreased HMT mRNA expression may be playing some role in the hyperresponsiveness of patients with allergic rhinitis.
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Affiliation(s)
- N Hirata
- Department of Otorhinolaryngology, Mie University School of Medicine, Tsu, Japan
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23
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Dietary nucleoside-nucleotide mixture aggravates nasal allergic responses induced by toluene diisocyanate in mice. Nutr Res 1997. [DOI: 10.1016/s0271-5317(97)00154-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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24
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Almansouri HM, Yamamoto S, Kulkarni AD, Ariizumi M, Adjei AA, Yamauchi K. Effect of Dietary Nucleosides and Nucleotides on Murine Allergic Rhinitis. Am J Med Sci 1996. [DOI: 10.1016/s0002-9629(15)41816-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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25
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Almansouri HM, Yamamoto S, Kulkarni AD, Ariizumi M, Adjei AA, Yamauchi K. Effect of dietary nucleosides and nucleotides on murine allergic rhinitis. Am J Med Sci 1996; 312:202-5. [PMID: 8900381 DOI: 10.1097/00000441-199611000-00002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Although there are studies that report the effects of dietary nucleoside and nucleotide mixtures on the immune response, none are concerned with the role in allergic disease. This study evaluated the effect of dietary nucleic acid mixture (NAM) on mice with a nasal allergy model. One group of mice was supplemented with a 0.5% NAM and the other two groups were fed with a nucleic acid-free diet with 20% casein that served as sensitized and nonsensitized controls. The mice of the NAM group and the sensitized control group were sensitized in two courses by 2 microl of 5% 2,4-toluene diisocyanate (TDI), whereas the nonsensitized control was given 2 microl of ethylacetate instead of TDI. On the 28th day, an allergy was provoked with 4 microl of 2.5% TDI and the allergic responses were observed for 10 minutes. Results showed that the NAM diet group had more severe symptoms of itching, rhinorrhea, snorting, and irritability compared with the controls; also observed were a high incidence of sneezing at 34.7 +/- 4.0 in NAM compared with 19.0 +/- 3.0 (P < 0.001) in sensitized controls and 2.8 +/- 0.7 in nonsensitized controls. From this study, it can be concluded that diets supplemented with nucleic acid mixture contribute to the severity of murine allergic rhinitis.
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Affiliation(s)
- H M Almansouri
- Department of Preventive Medicine, School of Medicine, University of the Ryukyus, Okinawa, Japan
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26
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Toyoshima K, Imamura I, Doi S, Inoue T, Takamatsu I, Murayama N, Kameda M, Hayashida M, Fukui H. Plasma diamine oxidase activity in asthmatic children. Allergol Int 1996. [DOI: 10.2332/allergolint.45.141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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27
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Sekizawa K, Nakazawa H, Morikawa M, Yamauchi K, Maeyama K, Watanabe T, Sasaki H. Histamine N-methyltransferase inhibitor potentiates histamine- and antigen-induced airway microvascular leakage in guinea pigs. J Allergy Clin Immunol 1995; 96:910-6. [PMID: 8543749 DOI: 10.1016/s0091-6749(95)70228-8] [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: 01/31/2023]
Abstract
BACKGROUND Histamine N-methyltransferase (HMT) modulates histamine- and antigen-induced bronchoconstriction. However, it is unclear whether vascular permeability evoked by an allergic reaction can be exaggerated by inhibition of HMT activity. METHODS We studied the effects of intravenously injected SKF 91488, a specific HMT inhibitor, on increases in plasma extravasation induced by intravenously injected histamine in unsensitized guinea pigs and by intravenously injected ovalbumin antigen in guinea pigs sensitized to ovalbumin in vivo with Evans blue dye as a marker. RESULTS Pretreatment with SKF 91488 shifted, in a dose-dependent fashion, the dose-response curves of the leakage of dye to histamine to lower concentrations in the trachea, main bronchi, and nasal mucosa. Likewise, pretreatment with SKF 91488 (20 mg/kg intravenously) significantly increased the leakage of dye induced by ovalbumin antigen (200 micrograms/kg intravenously) in three parts of the airway (p < 0.05). In contrast to SKF 91488, intravenously injected aminoguanidine, a specific inhibitor of diamine oxidase (16 mg/kg intravenously), did not alter the leakage of dye induced by histamine (from 0.001 microgram/kg to 10 micrograms/kg intravenously) (p < 0.20). HMT activities were observed in the nasal mucosa, as well as in the trachea and main bronchi, as shown in a previous study. CONCLUSION These findings suggest that HMT modulates the effects of exogenous histamine and endogenously released histamine induced by antigen challenge on plasma extravasation in the airway in guinea pigs in vivo.
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Affiliation(s)
- K Sekizawa
- Department of Geriatric Medicine, Tohoku University School of Medicine, Sendai, Japan
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28
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Hayes JP, Newman Taylor AJ. In vivo models of occupational asthma due to low molecular weight chemicals. Occup Environ Med 1995; 52:539-43. [PMID: 7663640 PMCID: PMC1128290 DOI: 10.1136/oem.52.8.539] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The aim was to review the development of in vivo models of asthma due to low molecular weight chemicals, in particular, those aspects that may be important to the understanding of occupational asthma in humans.
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Affiliation(s)
- J P Hayes
- Department of Respiratory Medicine, St Vincent's Hospital, University College, Dublin, Ireland
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Takemura M, Imamura I, Mizuguchi H, Fukui H, Yamatodani A. Tissue distribution of histamine N-methyltransferase-like immunoreactivity in rodents. Life Sci 1994; 54:1059-71. [PMID: 8152327 DOI: 10.1016/0024-3205(94)00416-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The rat kidney histamine N-methyltransferase was purified to homogeneity from Escherichia coli transfected with its recombinant cDNA. An antiserum to the enzyme was raised in rabbit by immunization with the purified protein. Western blot analysis of rat tissues with the antiserum revealed a band with identical mobility to that of purified enzyme in the extracts of kidney, jejunum, and brain, where the enzyme activity was detected. The antiserum cross-reacted with a 32K protein in mouse liver, brain, stomach, kidney and lung, and a 33K protein in guinea pig brain, stomach jejunum, spleen, lung, and kidney. The intensity of the staining in western blotting correlated well with the enzyme activity in all the tissues in these three species, suggesting that our antiserum is useful for quantifying histamine N-methyltransferase protein in rodent tissues.
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Affiliation(s)
- M Takemura
- Dept. Pharmacol., Hyogo College of Medicine, Nishinomiya, Japan
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