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Quan X, Zhang M, Qiao Z, Kou X, Xue Q, Wang J, Li L. Nitric oxide and ion channels mediate L-cysteine-induced inhibition of colonic smooth muscle contraction. J Muscle Res Cell Motil 2024; 45:11-20. [PMID: 38141146 DOI: 10.1007/s10974-023-09664-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Accepted: 12/07/2023] [Indexed: 12/24/2023]
Abstract
Previous studies have suggested that L-cysteine regulates gut motility through hydrogen sulfide. However, the mechanisms involved in the L-cysteine-induced response have not been extensively studied. This study aimed to investigate the underlying mechanisms of action of L-cysteine on spontaneous contraction of rat colon. Longitudinal and circular muscle strips from rat middle colon were prepared to measure the spontaneous contractile activities of colon in an organ bath system. Whole-cell voltage-clamp techniques were applied to record the currents of L-type voltage-dependent Ca2+ channels (VDCCs) and voltage-gated K+ channels (Kv) in isolated smooth muscle cells (SMCs) from colon. L-cysteine inhibited the spontaneous contraction of longitudinal and circular muscle strips from the rat colon in a concentration-dependent manner. The inhibition induced by L-cysteine was significantly decreased by inhibitors of H2S synthesis (p < 0.05). Furthermore, the suppression induced by L-cysteine was partially attenuated by tetrodotoxin, L-NNA and glibenclamide (p < 0.05). Whole-cell voltage-clamp recordings showed that L-cysteine caused a remarkable reduction in the peak currents of VDCCs and significantly increased the membrane currents of Kv channels in isolated SMCs (p < 0.05). We concluded that L-cysteine inhibits the contractile activities of smooth muscle strips from the rat colon. The relaxation in response to L-cysteine may be in part mediated by a nitrergic pathway and by inhibiting the VDCCs in combination with a direct activation of the KV channels and KATP channels.
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Affiliation(s)
- Xiaojing Quan
- Department of Gastroenterology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi Province, China
| | - Min Zhang
- Department of Gastroenterology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi Province, China
| | - Zhaojun Qiao
- Department of Gastroenterology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi Province, China
| | - Xuan Kou
- Department of Gastroenterology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi Province, China
| | - Qiong Xue
- Department of Gastroenterology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi Province, China
| | - Jinhai Wang
- Department of Gastroenterology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi Province, China
| | - Lu Li
- Department of Gastroenterology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi Province, China.
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Liu B, Zhang Z, Liu X, Hu W, Wu W. Gastrointestinal Fermentable Polysaccharide Is Beneficial in Alleviating Loperamide-Induced Constipation in Mice. Nutrients 2023; 15:4364. [PMID: 37892439 PMCID: PMC10610129 DOI: 10.3390/nu15204364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 10/10/2023] [Accepted: 10/12/2023] [Indexed: 10/29/2023] Open
Abstract
To investigate the role of gastrointestinal (GI) polysaccharide fermentation in alleviating constipation, two polysaccharide fractions were isolated from a soluble fiber extract with determined anti-constipation activity: a 2.04 kDa neutral fraction (SSP-1) contained 99.29% glucose, and a 41.66 kDa acidic fraction (SSP-2) contained 63.85% uronic acid. After mice were given loperamide for 14 d to induce constipation, the GI transit rate increased significantly in the SSP-1 group (p < 0.05) but not in the SSP-2 group. The stool weight in the SSP-2 group was significantly higher than that in SSP-1 (383.60 mg vs. 226.23 mg) (p < 0.05). Both SSP-1 and SSP-2 groups had significantly increased serum gastrin and motilin levels (p < 0.05) and changes in their fecal short-chain fatty acid (SCFA) profiles, while SSP-1 showed better fermentation properties than SSP-2 in terms of statistically higher fecal contents of acetic acid and total SCFAs (p < 0.05). Bioinformatic analysis indicated that SSP-1 upregulated bacteria such as Oscillibacter to improve SCFA metabolism and stimulate GI hormone secretion, while SSP-2 had less influence on the gut microbiota. These results suggest that the neutral polysaccharide with superior GI fermentation properties exerted beneficial effects on constipation, while the less fermentable pectic fraction might act as a stool-bulking agent.
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Affiliation(s)
- Buyu Liu
- Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (B.L.); (W.H.)
- College of Food and Health, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China;
| | - Zhiguo Zhang
- Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (B.L.); (W.H.)
| | - Xingquan Liu
- College of Food and Health, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China;
| | - Weiwei Hu
- Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (B.L.); (W.H.)
| | - Weicheng Wu
- Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (B.L.); (W.H.)
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Quan X, Zhang J, Liu Y, Sun C, Luo H, Wang J. Role of Hydrogen Sulfide in the Development of Colonic Hypomotility in a Diabetic Mouse Model Induced by Streptozocin. J Pharmacol Exp Ther 2023; 384:287-295. [PMID: 36357158 DOI: 10.1124/jpet.122.001392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 10/05/2022] [Accepted: 11/01/2022] [Indexed: 11/12/2022] Open
Abstract
Hydrogen sulfide (H2S), a novel gasotransmitter, is involved in the regulation of gut motility. Alterations in the balance of H2S play an important role in the pathogenesis of diabetes. This study was conducted to investigate the role of H2S in the colonic hypomotility of mice with streptozotocin (STZ)-induced diabetes. A single intraperitoneal injection of STZ was used to induce the type 1 diabetes model. Male C57BL/6 mice were randomized into a control group and an STZ-treated group. Immunohistochemistry, Western blotting, H2S generation, organ bath studies and whole-cell patch clamp techniques were carried out in single smooth muscle cells (SMCs) of the colon. We found that STZ-induced diabetic mice showed decreased stool output, impaired colonic contractility, and increased endogenous generation of H2S (p < 0.05). H2S-producing enzymes were upregulated in the colon tissues of diabetic mice (p < 0.05). The exogenous H2S donor sodium hydrosulfide (NaHS) elicited a biphasic action on colonic muscle contraction with excitation at lower concentrations and inhibition at higher concentrations. NaHS (0.1 mM) increased the currents of voltage-dependent calcium channels (VDCCs), while NaHS at 0.5 mM and 1.5 mM induced inhibition. Furthermore, NaHS reduced the currents of both voltage-dependent potassium (KV) channels and large conductance calcium-activated potassium (BK) channels in a dose-dependent manner. These results show that spontaneous contraction of colonic muscle strips from diabetic mice induced by STZ was significantly decreased, which may underlie the constipation associated with diabetes mellitus (DM). H2S overproduction with subsequent suppression of muscle contraction via VDCCs on SMCs may contribute in part to the pathogenesis of colonic hypomotility in DM. SIGNIFICANCE STATEMENT: Hydrogen sulfide may exhibit a biphasic effect on colonic motility in mice by regulating the activities of voltage-dependent calcium channels and voltage-dependent and large conductance calcium activated potassium channels. H2S overproduction with subsequent suppression of muscle contraction via VDCCs may contribute to the pathogenesis of colonic hypomotility in diabetes mellitus.
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Affiliation(s)
- Xiaojing Quan
- Department of Gastroenterology (X.Q., Y.L., C.S., J.W.) and Department of Endocrinology and Metabolic Diseases (J.Z.), the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China; and Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China (H.L.)
| | - Jie Zhang
- Department of Gastroenterology (X.Q., Y.L., C.S., J.W.) and Department of Endocrinology and Metabolic Diseases (J.Z.), the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China; and Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China (H.L.)
| | - Yanli Liu
- Department of Gastroenterology (X.Q., Y.L., C.S., J.W.) and Department of Endocrinology and Metabolic Diseases (J.Z.), the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China; and Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China (H.L.)
| | - Ceng Sun
- Department of Gastroenterology (X.Q., Y.L., C.S., J.W.) and Department of Endocrinology and Metabolic Diseases (J.Z.), the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China; and Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China (H.L.)
| | - Hesheng Luo
- Department of Gastroenterology (X.Q., Y.L., C.S., J.W.) and Department of Endocrinology and Metabolic Diseases (J.Z.), the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China; and Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China (H.L.)
| | - Jinhai Wang
- Department of Gastroenterology (X.Q., Y.L., C.S., J.W.) and Department of Endocrinology and Metabolic Diseases (J.Z.), the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China; and Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China (H.L.)
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The Role of H 2S in the Gastrointestinal Tract and Microbiota. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1315:67-98. [PMID: 34302689 DOI: 10.1007/978-981-16-0991-6_4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The pathways and mechanisms of the production of H2S in the gastrointestinal tract are briefly described, including endogenous H2S produced by the organism and H2S from microorganisms in the gastrointestinal tract. In addition, the physiological regulatory functions of H2S on gastrointestinal motility, sensation, secretion and absorption, endocrine system, proliferation and differentiation of stem cells, and the possible mechanisms involved are introduced. In view of the complexity of biosynthesis, physiological roles, and the mechanism of H2S, this chapter focuses on the interactions and dynamic balance among H2S, gastrointestinal microorganisms, and the host. Finally, we focus on some clinical gastrointestinal diseases, such as inflammatory bowel disease, colorectal cancer, functional gastrointestinal disease, which might occur or develop when the above balance is broken. Pharmacological regulation of H2S or the intestinal microorganisms related to H2S might provide new therapeutic approaches for some gastrointestinal diseases.
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Sun H, Ding H, Shi Y, Li C, Jin H, Yang X, Chen Z, Tian P, Zhu J, Sun H. Exogenous Hydrogen Sulfide Within the Nucleus Ambiguus Inhibits Gastrointestinal Motility in Rats. Front Physiol 2020; 11:545184. [PMID: 33013478 PMCID: PMC7516268 DOI: 10.3389/fphys.2020.545184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 08/21/2020] [Indexed: 11/13/2022] Open
Abstract
Hydrogen sulfide (H2S) is a neuromodulator in the central nervous system. However, the physiological role of H2S in the nucleus ambiguus (NA) has rarely been reported. This research aimed to elucidate the role of H2S in the regulation of gastrointestinal motility in rats. Male Wistar rats were randomly assigned to sodium hydrosulfide (NaHS; 4 and 8 nmol) groups, physiological saline (PS) group, capsazepine (10 pmol) + NaHS (4 nmol) group, L703606 (4 nmol) + NaHS (4 nmol) group, and pyrrolidine dithiocarbamate (PDTC, 4 nmol) + NaHS (4 nmol) group. Gastrointestinal motility curves before and after the injection were recorded using a latex balloon attached with a pressure transducer, which was introduced into the pylorus through gastric fundus. The results demonstrated that NaHS (4 and 8 nmol), an exogenous H2S donor, remarkably suppressed gastrointestinal motility in the NA of rats (P < 0.01). The suppressive effect of NaHS on gastrointestinal motility could be prevented by capsazepine, a transient receptor potential vanilloid 1 (TRPV1) antagonist, and PDTC, a NF-κB inhibitor. However, the same amount of PS did not induce significant changes in gastrointestinal motility (P > 0.05). Our findings indicate that NaHS within the NA can remarkably suppress gastrointestinal motility in rats, possibly through TRPV1 channels and NF-κB-dependent mechanism.
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Affiliation(s)
- Hongzhao Sun
- School of Life Sciences, Qilu Normal University, Jinan, China
| | - Haikun Ding
- School of Life Sciences, Qilu Normal University, Jinan, China
| | - Yuan Shi
- School of Life Sciences, Qilu Normal University, Jinan, China
| | - Chenyu Li
- School of Life Sciences, Qilu Normal University, Jinan, China
| | - Haoran Jin
- School of Life Sciences, Qilu Normal University, Jinan, China
| | - Xiaoyue Yang
- School of Life Sciences, Qilu Normal University, Jinan, China
| | - Zhaosong Chen
- School of Life Sciences, Qilu Normal University, Jinan, China
| | - Pengpeng Tian
- School of Life Sciences, Qilu Normal University, Jinan, China
| | - Jianping Zhu
- Key Laboratory of Animal Resistance, School of Life Sciences, Shandong Normal University, Jinan, China
| | - Haiji Sun
- Key Laboratory of Animal Resistance, School of Life Sciences, Shandong Normal University, Jinan, China
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Benítez-Angeles M, Morales-Lázaro SL, Juárez-González E, Rosenbaum T. TRPV1: Structure, Endogenous Agonists, and Mechanisms. Int J Mol Sci 2020; 21:ijms21103421. [PMID: 32408609 PMCID: PMC7279265 DOI: 10.3390/ijms21103421] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 04/29/2020] [Accepted: 04/29/2020] [Indexed: 12/13/2022] Open
Abstract
The Transient Receptor Potential Vanilloid 1 (TRPV1) channel is a polymodal protein with functions widely linked to the generation of pain. Several agonists of exogenous and endogenous nature have been described for this ion channel. Nonetheless, detailed mechanisms and description of binding sites have been resolved only for a few endogenous agonists. This review focuses on summarizing discoveries made in this particular field of study and highlighting the fact that studying the molecular details of activation of the channel by different agonists can shed light on biophysical traits that had not been previously demonstrated.
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Affiliation(s)
| | | | | | - Tamara Rosenbaum
- Correspondence: ; Tel.: +52-555-622-56-24; Fax: +52-555-622-56-07
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The role of hydrogen sulfide in gastrointestinal tract functioning (review). CURRENT ISSUES IN PHARMACY AND MEDICAL SCIENCES 2020. [DOI: 10.2478/cipms-2020-0009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Despite a fairly large amount of literature data about the involvement of hydrogen sulfide in physiological and pathophysiological processes, its role in gastrointestinal tract functioning has not been studied sufficiently. This review systematizes and generalizes the mechanisms of H2S-associated regulation of gastrointestinal secretion and motility on the basis of literature sources processing and own research results. We analysed world professional literature and sources in Google Scholar, PubMed, MedLine, Embase, Cochrane, and data from more than 50 articles and books on the problem were processed in the article. This review gives a synopsis of the H2S function in the regulation of the secretory and motor-evacuation function, and in stimulating the reparative properties of the digestive tract, and indicates the main mechanisms.
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Li Y, Wang HJ, Wang XZ, Li XL, Zhang X, Liu H. Effect of Hydrogen Sulfide on the Mitogen-Activated Protein Kinase Signaling Pathway in Cultured Skin Macrophages of Burned Rats. J Surg Res 2019; 245:467-474. [PMID: 31446188 DOI: 10.1016/j.jss.2019.07.092] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 06/06/2019] [Accepted: 07/23/2019] [Indexed: 01/01/2023]
Abstract
BACKGROUND This study aims to investigate the effect of hydrogen sulfide on the mitogen-activated protein kinases signaling pathway in in vitro cultured skin macrophages of burned rats. MATERIALS AND METHODS Thirteen healthy Sprague-Dawley rats were divided into five groups: normal control group, burned control group, sodium hydrogen sulfide group, glibenclamide group, and sodium hydrogen sulfide + glibenclamide group. The burned rats were made into a deep II° 5% total body surface area flame burn injury model. The skin basement macrophages were separated from the skin of normal rats and the wound skin of burned rats and cultured. At 1, 6, and 12 h after intervention, extracellular signal-regulated kinase (ERK), c-Jun N-terminal kinase (JNK), and p38 protein levels were detected by Western blot, and ERK, p38, and JNK messenger RNA (mRNA) levels were detected by reverse transcription polymerase chain reaction. RESULTS Differences in ERK, p38, and JNK mRNA and protein levels between the normal control group and burned control group were statistically significant (P < 0.05). At the same time point, the ERK, p38, and JNK mRNA and protein levels in the NaSH group were different from those in other groups, and the differences were statistically significant (P < 0.05). CONCLUSIONS Hydrogen sulfide has a regulatory effect on ERK, JNK, and p38 in the mitogen-activated protein kinases signaling pathway in macrophages of burned rats.
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Affiliation(s)
- Yi Li
- Department of Burn and Plastic Surgery, The Affiliated Hospital of Qinghai University, Xining, China.
| | - Hong-Jin Wang
- Department of Burn and Plastic Surgery, The Affiliated Hospital of Qinghai University, Xining, China
| | - Xian-Zhen Wang
- Department of Burn and Plastic Surgery, The Affiliated Hospital of Qinghai University, Xining, China
| | - Xing-Long Li
- Department of Burn and Plastic Surgery, The Affiliated Hospital of Qinghai University, Xining, China
| | - Xin Zhang
- Department of Burn and Plastic Surgery, The Affiliated Hospital of Qinghai University, Xining, China
| | - Hong Liu
- Department of Burn and Plastic Surgery, The Affiliated Hospital of Qinghai University, Xining, China
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Xu X, Li S, Shi Y, Tang Y, Lu W, Han T, Xue B, Li J, Liu C. Hydrogen sulfide downregulates colonic afferent sensitivity by a nitric oxide synthase-dependent mechanism in mice. Neurogastroenterol Motil 2019; 31:e13471. [PMID: 30230133 DOI: 10.1111/nmo.13471] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Revised: 08/04/2018] [Accepted: 08/24/2018] [Indexed: 02/01/2023]
Abstract
BACKGROUND The effect of hydrogen sulfide (H2 S) on visceral nociception is elusive. The conflicting evidence of its pro- and antinociceptive effects raises a series of questions with respect to the effect of H2 S on colonic afferent activity and the underlying mechanism, which was further elucidated in this study. METHODS Colonic mesenteric afferent nerve spikes of normal male C57BL/6J mice, Cbs+/- mice, and Wistar rats were recorded in vitro. The abdominal withdrawal reflex (AWR) induced by colorectal distension (CRD) was evaluated in Cbs+/- mice and WT littermates. KEY RESULTS Sodium hydrosulfide (NaHS) significantly decreased colonic afferent spontaneous discharge, chemosensitivity to bradykinin, mechanosensitivity to ramp distention, and intraluminal pressure in mice. Reducing the relaxant action of NaHS on intestinal smooth muscle using the nonspecific K+ channel blocker TEA (10 mmol/L) did not block the inhibition of NaHS on afferent nerve activity. The inhibitory effects of NaHS (0.5 mmol/L) on colonic afferent sensitivity were largely eliminated by the pretreatment with nonspecific NOS inhibitor NG -Methyl-l-arginine acetate salt (1 mmol/L), the specific nNOS inhibitor NPLA (1 μmol/L), or N-type Ca2+ channel blocker ω-conotoxin GVIA (1 μmol/L). Compared with WT mice, Cbs+/- mice showed increased mesenteric afferent sensitivity to colonic distention and enhanced hyperalgesic response to CRD. Intraperitoneal administration of NaHS (60 μmol/kg) alleviated the nociception response to CRD in both Cbs+/- and WT mice. CONCLUSIONS AND INFERENCES H2 S downregulates colonic mesenteric afferent sensitivity by a nNOS-dependent mechanism in mice. Our findings may demonstrate a new mechanism for the antinociceptive effect of H2 S in colon.
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Affiliation(s)
- Xiaomeng Xu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Shandong University Cheeloo Medical College, Shandong, China
| | - Shuang Li
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Shandong University Cheeloo Medical College, Shandong, China
| | - Yao Shi
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Shandong University Cheeloo Medical College, Shandong, China
| | - Yan Tang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Shandong University Cheeloo Medical College, Shandong, China
| | - Wen Lu
- College of Agricultural and Biological Engineering, Heze University, Shandong, China
| | - Ting Han
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Shandong University Cheeloo Medical College, Shandong, China
| | - Bing Xue
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Shandong University Cheeloo Medical College, Shandong, China
| | - Jingxin Li
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Shandong University Cheeloo Medical College, Shandong, China
| | - Chuanyong Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Shandong University Cheeloo Medical College, Shandong, China.,Provincial Key Lab of Mental Disorder, School of Basic Medical Sciences, Shandong University Cheeloo Medical College, Shandong, China
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Pozsgai G, Bátai IZ, Pintér E. Effects of sulfide and polysulfides transmitted by direct or signal transduction-mediated activation of TRPA1 channels. Br J Pharmacol 2018; 176:628-645. [PMID: 30292176 PMCID: PMC6346070 DOI: 10.1111/bph.14514] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 06/22/2018] [Accepted: 09/24/2018] [Indexed: 12/21/2022] Open
Abstract
Hydrogen sulfide (H2S) is a gaseous mediator in various physiological and pathological processes, including neuroimmune modulation, metabolic pathways, cardiovascular system, tumour growth, inflammation and pain. Now the hydrogen polysulfides (H2Sn) have been recognised as signalling molecules modulating ion channels, transcription factors and protein kinases. Transient receptor potential (TRP) cation channels can be activated by mechanical, thermal or chemical triggers. Here, we review the current literature regarding the biological actions of sulfide and polysulfide compounds mediated by TRP channels with special emphasis on the role of TRPA1, best known as ion channels in nociceptors. However, the non‐neuronal TRPA1 channels should also be considered to play regulatory roles. Although sulfide and polysulfide effects in different pathological circumstances and TRPA1‐mediated processes have been investigated intensively, our review attempts to present the first comprehensive overview of the potential crosstalk between TRPA1 channels and sulfide‐activated signalling pathways. Linked Articles This article is part of a themed section on Chemical Biology of Reactive Sulfur Species. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v176.4/issuetoc
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Affiliation(s)
- Gábor Pozsgai
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Pécs, Hungary
| | - István Zoárd Bátai
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Pécs, Hungary
| | - Erika Pintér
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Pécs, Hungary
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Figliuolo VR, Coutinho-Silva R, Coutinho CMLM. Contribution of sulfate-reducing bacteria to homeostasis disruption during intestinal inflammation. Life Sci 2018; 215:145-151. [PMID: 30414430 DOI: 10.1016/j.lfs.2018.11.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 11/02/2018] [Accepted: 11/05/2018] [Indexed: 12/26/2022]
Abstract
Alteration in microbial populations and metabolism are key events associated with disruption of intestinal homeostasis and immune tolerance during intestinal inflammation. A substantial imbalance in bacterial populations in the intestine and their relationships with the host have been observed in patients with inflammatory bowel disease (IBD), believed to be part of an intricate mechanism of triggering and progression of intestinal inflammation. Because elevated numbers of sulfate-reducing bacteria (SRB) have been found in the intestines of patients with IBD, the study of their interaction with intestinal cells and their potential involvement in IBD has been the focus of investigation to better understand the intestinal pathology during IBD, as well as to find new ways to treat the disease. SRB not only directly interact with intestinal epithelial cells during intestinal inflammation but may also promote intestinal damage through generation of hydrogen sulfide at high levels. Herein we review the literature to discuss the various aspects of SRB interaction with host intestinal tissue, focusing on their interaction with intestinal epithelial and immune cells during intestinal inflammation.
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Affiliation(s)
- Vanessa Ribeiro Figliuolo
- Instituto de Biofísica Carlos Chagas Filho - IBCCF, Universidade Federal do Rio de Janeiro, RJ, Brazil; LITEB, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, RJ, Brazil; Department of Pediatrics, University of Arizona, Tucson, AZ, USA
| | - Robson Coutinho-Silva
- Instituto de Biofísica Carlos Chagas Filho - IBCCF, Universidade Federal do Rio de Janeiro, RJ, Brazil
| | - Claudia Mara Lara Melo Coutinho
- Departamento de Biologia Celular e Molecular, Instituto de Biologia, Universidade Federal Fluminense, Niteroi, RJ, Brazil; LITEB, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, RJ, Brazil.
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Saghazadeh-Dezfuli M, Fanaei H, Gharib-Naseri MK, Nasri S, Mard SA. Antidiarrheal effect of sodium hydrosulfide in diabetic rats: In vitro and in vivo studies. Neurogastroenterol Motil 2018; 30:e13273. [PMID: 29286194 DOI: 10.1111/nmo.13273] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 12/03/2017] [Indexed: 01/31/2023]
Abstract
BACKGROUND The inhibitory effects of H2 S on spontaneous contractions of smooth muscles of small, and large intestines well-established but its role in the pathophysiology of diarrhea has not been identified. Therefore, this study evaluated the role of exogenous H2 S (NaHS) on diabetic-induced diarrhea and determined mRNA expression of cystathionine β-lyase (CSE) and cystathionine γ-synthase (CBS) in diabetic rats. METHODS In order to evaluate antidiarrheal effect of H2 S, normal and diabetic rats received NaHS and L-Cysteine and the total number of fecal pellets (FP) determined. The effect of NaHS on intestinal transit ratio (ITR) was also evaluated in diabetic rats. The level of mRNA expressions of CBS and CSE determined in smooth muscles of jejunum, ileum, and colon in normal, and diabetic rats. The effect of NaHS on frequency and tension of spontaneous contractions of smooth muscle strips of colon, ileum, and jejunum were investigated. KEY RESULTS NaHS decreased ITR, total number of FP, frequency and tension of spontaneous contractions of colon, ileum, and jejunum muscle strips in diabetic rats. The level of mRNA expression of CSE and CBS in diabetic rats were lower than in normal rats. NaHS, and L-Cysteine decreased the number of FP in normal rats. CONCLUSIONS & INFERENCES These findings showed NaHS effectively controlled diarrhea in diabetic rats through decreasing the frequency, and tension of spontaneous contraction of smooth muscles of large, and small intestines. The increased frequency and tension of spontaneous contractions of smooth muscles in diabetic rats may be due to down-regulation of H2 S biosynthesis enzymes.
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Affiliation(s)
- M Saghazadeh-Dezfuli
- Physiology Research Center (PRC), Research Center for Infectious Diseases of Digestive System [Alimentary Tract Research Center], Department of Physiology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - H Fanaei
- Physiology Research Center (PRC), Department of Physiology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - M K Gharib-Naseri
- Physiology Research Center (PRC), Department of Physiology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - S Nasri
- Biology, Payame Noor University, Tehran, Iran
| | - S A Mard
- Physiology Research Center (PRC), Research Center for Infectious Diseases of Digestive System [Alimentary Tract Research Center], Department of Physiology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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13
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Bai X, Ihara E, Hirano K, Tanaka Y, Nakano K, Kita S, Iwamoto T, Ogino H, Hirano M, Oda Y, Nakamura K, Ogawa Y. Endogenous Hydrogen Sulfide Contributes to Tone Generation in Porcine Lower Esophageal Sphincter Via Na +/Ca 2+ Exchanger. Cell Mol Gastroenterol Hepatol 2017; 5:209-221. [PMID: 29379856 PMCID: PMC5782486 DOI: 10.1016/j.jcmgh.2017.11.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 11/14/2017] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND AIMS Hydrogen sulfide (H2S) is a major physiologic gastrotransmitter. Its role in the regulation of the lower esophageal sphincter (LES) function remains unknown. The present study addresses this question. METHODS Isometric contraction was monitored in circular smooth muscle strips of porcine LES. Changes in cytosolic Ca2+ concentration ([Ca2+]i) and force were simultaneously monitored in fura-2-loaded strips with front-surface fluorometry. The contribution of endogenous H2S to LES contractility was investigated by examining the effects of inhibitors of H2S-generating enzymes, including cystathionine-β-synthase, cystathionine-γ-lyase, and 3-mercaptopyruvate sulfurtransferase, on the LES function. RESULTS Porcine LES strips myogenically maintained a tetrodotoxin-resistant basal tone. Application of AOA (cystathionine-β-synthase inhibitor) or L-aspartic acid (L-Asp; 3-mercaptopyruvate sulfurtransferase inhibitor) but not DL-PAG (cystathionine-γ-lyase inhibitor), decreased this basal tone. The relaxant effects of AOA and L-Asp were additive. Maximum relaxation was obtained by combination of 1 mM AOA and 3 mM L-Asp. Immunohistochemical analyses revealed that cystathionine-β-synthase and 3-mercaptopyruvate sulfurtransferase, but not cystathionine-γ-lyase, were expressed in porcine LES. AOA+L-Asp-induced relaxation was accompanied by a decrease in [Ca2+]i and inversely correlated with the extracellular Na+ concentration ([Na+]o) (25-137.4 mM), indicating involvement of an Na+/Ca2+ exchanger. The reduction in the basal [Ca2+]i level by AOA was significantly augmented in the antral smooth muscle sheets of Na+/Ca2+ exchanger transgenic mice compared with wild-type mice. CONCLUSIONS Endogenous H2S regulates the LES myogenic tone by maintaining the basal [Ca2+]i via Na+/Ca2+ exchanger. H2S-generating enzymes may be a potential therapeutic target for esophageal motility disorders, such as achalasia.
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Key Words
- 3MST, 3-mercaptopyruvate sulfurtransferase
- AOA, amino-oxyacetic acid
- CBS, cystathionine-β-synthase
- CCh, carbachol
- CSE, cystathionine-γ-lyase
- ES, extracellular solution
- H2S, hydrogen sulfide
- Hydrogen Sulfate
- KATP channels, ATP-sensitive K+ channels
- KES, K+ extracellular solution
- L-Asp, L-aspartic acid
- L-Cys, L-cysteine
- L-NAME, Nω-nitro-L-arginine methyl ester
- LES, lower esophageal sphincter
- Lower Esophageal Sphincter
- Myogenic Tone Regulation
- NCX, Na+/Ca2+ exchanger
- NES, normal extracellular solution
- Na+/Ca2+ Exchanger
- PAG, propargylglycine
- TEA, tetraethylammonium
- TG, transgenic
- TTX, tetrodotoxin
- [Ca2+]i, cytosolic Ca2+ concentration
- [Na+]o, extracellular Na+ concentration
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Affiliation(s)
- Xiaopeng Bai
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Eikichi Ihara
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan,Correspondence Address correspondence to: Eikichi Ihara, MD, PhD, Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan. fax +81-92-642-5287.Department of Medicine and Bioregulatory ScienceGraduate School of Medical SciencesKyushu University3-1-1 Maidashi, Higashi-kuFukuoka812-8582Japan
| | - Katsuya Hirano
- Department of Cardiovascular Physiology, Faculty of Medicine, Kagawa University, Kagawa Prefecture, Japan
| | - Yoshimasa Tanaka
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kayoko Nakano
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Satomi Kita
- Department of Pharmacology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan,Department of Pharmacology, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, Japan
| | - Takahiro Iwamoto
- Department of Pharmacology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
| | - Haruei Ogino
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Mayumi Hirano
- Division of Molecular Cardiology, Research Institute of Angiocardiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshinao Oda
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kazuhiko Nakamura
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshihiro Ogawa
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan,Department of Molecular and Cellular Metabolism, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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14
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Dominguez-Rodriguez M, Drobny H, Boehm S, Salzer I. Electrophysiological Investigation of the Subcellular Fine Tuning of Sympathetic Neurons by Hydrogen Sulfide. Front Pharmacol 2017; 8:522. [PMID: 28824437 PMCID: PMC5543101 DOI: 10.3389/fphar.2017.00522] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 07/25/2017] [Indexed: 11/20/2022] Open
Abstract
H2S is well-known as hypotensive agent, whether it is synthetized endogenously or administered systemically. Moreover, the H2S donor NaHS has been shown to inhibit vasopressor responses triggered by stimulation of preganglionic sympathetic fibers. In contradiction with this latter result, NaHS has been reported to facilitate transmission within sympathetic ganglia. To resolve this inconsistency, H2S and NaHS were applied to primary cultures of dissociated sympathetic ganglia to reveal how this gasotransmitter might act at different subcellular compartments of such neurons. At the somatodendritic region of ganglionic neurons, NaHS raised the frequency, but not the amplitudes, of cholinergic miniature postsynaptic currents via a presynaptic site of action. In addition, the H2S donor as well as H2S itself caused membrane hyperpolarization and decreased action potential firing in response to current injection. Submillimolar NaHS concentrations did not affect currents through Kυ7 channels, but did evoke currents through KATP channels. Similarly to NaHS, the KATP channel activator diazoxide led to hyperpolarization and decreased membrane excitability; the effects of both, NaHS and diazoxide, were prevented by the KATP channel blocker tolbutamide. At postganglionic sympathetic nerve terminals, H2S and NaHS enhanced noradrenaline release due to a direct action at the level of vesicle exocytosis. Taken together, H2S may facilitate transmitter release within sympathetic ganglia and at sympatho-effector junctions, but causes hyperpolarization and reduced membrane excitability in ganglionic neurons. As this latter action was due to KATP channel gating, this channel family is hereby established as another previously unrecognized determinant in the function of sympathetic ganglia.
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Affiliation(s)
- Manuel Dominguez-Rodriguez
- Department of Neurophysiology and Neuropharmacology, Center for Physiology and Pharmacology, Medical University of ViennaVienna, Austria
| | - Helmut Drobny
- Department of Neurophysiology and Neuropharmacology, Center for Physiology and Pharmacology, Medical University of ViennaVienna, Austria
| | - Stefan Boehm
- Department of Neurophysiology and Neuropharmacology, Center for Physiology and Pharmacology, Medical University of ViennaVienna, Austria
| | - Isabella Salzer
- Department of Neurophysiology and Neuropharmacology, Center for Physiology and Pharmacology, Medical University of ViennaVienna, Austria
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15
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Koroleva K, Mustafina A, Yakovlev A, Hermann A, Giniatullin R, Sitdikova G. Receptor Mechanisms Mediating the Pro-Nociceptive Action of Hydrogen Sulfide in Rat Trigeminal Neurons and Meningeal Afferents. Front Cell Neurosci 2017; 11:226. [PMID: 28798669 PMCID: PMC5529342 DOI: 10.3389/fncel.2017.00226] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 07/14/2017] [Indexed: 01/10/2023] Open
Abstract
Hydrogen sulfide (H2S), a well-established member of the gasotransmitter family, is involved in a variety of physiological functions, including pro-nociceptive action in the sensory system. Although several reports have shown that H2S activates sensory neurons, the molecular targets of H2S action in trigeminal (TG) nociception, implicated in migraine, remains controversial. In this study, using suction electrode recordings, we investigate the effect of the H2S donor, sodium hydrosulfide (NaHS), on nociceptive firing in rat meningeal TG nerve fibers. The effect of NaHS was also explored with patch-clamp and calcium imaging techniques on isolated TG neurons. NaHS dramatically increased the nociceptive firing in TG nerve fibers. This effect was abolished by the TRPV1 inhibitor capsazepine but was partially prevented by the TRPA1 blocker HC 030031. In a fraction of isolated TG neurons, NaHS transiently increased amplitude of capsaicin-induced currents. Moreover, NaHS by itself induced inward currents in sensory neurons, which were abolished by the TRPV1 inhibitor capsazepine suggesting involvement of TRPV1 receptors. In contrast, the inhibitor of TRPA1 receptors HC 030031 did not prevent the NaHS-induced currents. Imaging of a large population of TG neurons revealed that NaHS induced calcium transients in 41% of tested neurons. Interestingly, this effect of NaHS in some neurons was inhibited by the TRPV1 antagonist capsazepine whereas in others it was sensitive to the TRPA1 blocker HC 030031. Our data suggest that both TRPV1 and TRPA1 receptors play a role in the pro-nociceptive action of NaHS in peripheral TG nerve endings in meninges and in somas of TG neurons. We propose that activation of TRPV1 and TRPA1 receptors by H2S during neuro-inflammation conditions contributes to the nociceptive firing in primary afferents underlying migraine pain.
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Affiliation(s)
- Kseniya Koroleva
- Department of Human and Animal Physiology, Institute of Fundamental Medicine and Biology, Kazan Federal UniversityKazan, Russia
| | - Alsu Mustafina
- Department of Human and Animal Physiology, Institute of Fundamental Medicine and Biology, Kazan Federal UniversityKazan, Russia
| | - Aleksey Yakovlev
- Department of Human and Animal Physiology, Institute of Fundamental Medicine and Biology, Kazan Federal UniversityKazan, Russia
| | - Anton Hermann
- Department of Cell Biology and Physiology, University of SalzburgSalzburg, Austria
| | - Rashid Giniatullin
- Department of Human and Animal Physiology, Institute of Fundamental Medicine and Biology, Kazan Federal UniversityKazan, Russia.,A.I. Virtanen Institute for Molecular Sciences, University of Eastern FinlandKuopio, Finland
| | - Guzel Sitdikova
- Department of Human and Animal Physiology, Institute of Fundamental Medicine and Biology, Kazan Federal UniversityKazan, Russia
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16
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Yu W, Liao Y, Huang Y, Chen SY, Sun Y, Sun C, Wu Y, Tang C, Du J, Jin H. Endogenous Hydrogen Sulfide Enhances Carotid Sinus Baroreceptor Sensitivity by Activating the Transient Receptor Potential Cation Channel Subfamily V Member 1 (TRPV1) Channel. J Am Heart Assoc 2017; 6:JAHA.116.004971. [PMID: 28512115 PMCID: PMC5524069 DOI: 10.1161/jaha.116.004971] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Background We aimed to investigate the regulatory effects of hydrogen sulfide (H2S) on carotid sinus baroreceptor sensitivity and its mechanisms. Methods and Results Male Wistar‐Kyoto rats and spontaneously hypertensive rats (SHRs) were used in the experiment and were given an H2S donor or a cystathionine‐β‐synthase inhibitor, hydroxylamine, for 8 weeks. Systolic blood pressure and the cystathionine‐β‐synthase/H2S pathway in carotid sinus were detected. Carotid sinus baroreceptor sensitivity and the functional curve of the carotid baroreceptor were analyzed using the isolated carotid sinus perfusion technique. Effects of H2S on transient receptor potential cation channel subfamily V member 1 (TRPV1) expression and S‐sulfhydration were detected. In SHRs, systolic blood pressure was markedly increased, but the cystathionine‐β‐synthase/H2S pathway in the carotid sinus was downregulated in comparison to that of Wistar‐Kyoto rats. Carotid sinus baroreceptor sensitivity in SHRs was reduced, demonstrated by the right and upward shift of the functional curve of the carotid baroreceptor. Meanwhile, the downregulation of TRPV1 protein was demonstrated in the carotid sinus; however, H2S reduced systolic blood pressure but enhanced carotid sinus baroreceptor sensitivity in SHRs, along with TRPV1 upregulation in the carotid sinus. In contrast, hydroxylamine significantly increased the systolic blood pressure of Wistar‐Kyoto rats, along with decreased carotid sinus baroreceptor sensitivity and reduced TRPV1 protein expression in the carotid sinus. Furthermore, H2S‐induced enhancement of carotid sinus baroreceptor sensitivity of SHRs could be amplified by capsaicin but reduced by capsazepine. Moreover, H2S facilitated S‐sulfhydration of TRPV1 protein in the carotid sinus of SHRs and Wistar‐Kyoto rats. Conclusions H2S regulated blood pressure via an increase in TRPV1 protein expression and its activity to enhance carotid sinus baroreceptor sensitivity.
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Affiliation(s)
- Wen Yu
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Ying Liao
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Yaqian Huang
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | | | - Yan Sun
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Chufan Sun
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Yuming Wu
- Department of Physiology, Institute of Basic Medicine, Hebei Medical University, Shijiazhuang, China
| | - Chaoshu Tang
- Department of Physiology and Pathophysiology, Peking University Health Science Centre, Beijing, China.,Key Lab of Molecular Cardiology, Ministry of Education, Beijing, China
| | - Junbao Du
- Department of Pediatrics, Peking University First Hospital, Beijing, China.,Key Lab of Molecular Cardiology, Ministry of Education, Beijing, China
| | - Hongfang Jin
- Department of Pediatrics, Peking University First Hospital, Beijing, China
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17
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Magierowski M, Magierowska K, Hubalewska-Mazgaj M, Sliwowski Z, Pajdo R, Ginter G, Kwiecien S, Brzozowski T. Exogenous and Endogenous Hydrogen Sulfide Protects Gastric Mucosa against the Formation and Time-Dependent Development of Ischemia/Reperfusion-Induced Acute Lesions Progressing into Deeper Ulcerations. Molecules 2017; 22:molecules22020295. [PMID: 28212299 PMCID: PMC6155792 DOI: 10.3390/molecules22020295] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 02/06/2017] [Accepted: 02/11/2017] [Indexed: 12/14/2022] Open
Abstract
Hydrogen sulfide (H2S) is an endogenous mediator, synthesized from l-cysteine by cystathionine γ-lyase (CSE), cystathionine β-synthase (CBS) or 3-mercaptopyruvate sulfurtransferase (3-MST). The mechanism(s) involved in H2S-gastroprotection against ischemia/reperfusion (I/R) lesions and their time-dependent progression into deeper gastric ulcerations have been little studied. We determined the effect of l-cysteine, H2S-releasing NaHS or slow H2S releasing compound GYY4137 on gastric blood flow (GBF) and gastric lesions induced by 30 min of I followed by 3, 6, 24 and 48 h of R. Role of endogenous prostaglandins (PGs), afferent sensory nerves releasing calcitonin gene-related peptide (CGRP), the gastric expression of hypoxia inducible factor (HIF)-1α and anti-oxidative enzymes were examined. Rats with or without capsaicin deactivation of sensory nerves were pretreated i.g. with vehicle, NaHS (18–180 μmol/kg) GYY4137 (90 μmol/kg) or l-cysteine (0.8–80 μmol/kg) alone or in combination with (1) indomethacin (14 μmol/kg i.p.), SC-560 (14 μmol/kg), celecoxib (26 μmol/kg); (2) capsazepine (13 μmol/kg i.p.); and (3) CGRP (2.5 nmol/kg i.p.). The area of I/R-induced gastric lesions and GBF were measured by planimetry and H2-gas clearance, respectively. Expression of mRNA for CSE, CBS, 3-MST, HIF-1α, glutathione peroxidase (GPx)-1, superoxide dismutase (SOD)-2 and sulfide production in gastric mucosa compromised by I/R were determined by real-time PCR and methylene blue method, respectively. NaHS and l-cysteine dose-dependently attenuated I/R-induced lesions while increasing the GBF, similarly to GYY4137 (90 μmol/kg). Capsaicin denervation and capsazepine but not COX-1 and COX-2 inhibitors reduced NaHS- and l-cysteine-induced protection and hyperemia. NaHS increased mRNA expression for SOD-2 and GPx-1 but not that for HIF-1α. NaHS which increased gastric mucosal sulfide release, prevented further progression of acute I/R injury into deeper gastric ulcers at 6, 24 and 48 h of R. We conclude that H2S-induced gastroprotection against I/R-injury is due to increase in gastric microcirculation, anti-oxidative properties and afferent sensory nerves activity but independent on endogenous prostaglandins.
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Affiliation(s)
- Marcin Magierowski
- Department of Physiology, Jagiellonian University Medical College, 31-531 Cracow, Poland.
| | - Katarzyna Magierowska
- Department of Physiology, Jagiellonian University Medical College, 31-531 Cracow, Poland.
| | - Magdalena Hubalewska-Mazgaj
- Department of Physiology, Jagiellonian University Medical College, 31-531 Cracow, Poland.
- Department of Genetic Research and Nutrigenomics, Malopolska Centre of Biotechnology, Jagiellonian University, 30-387 Cracow, Poland.
| | - Zbigniew Sliwowski
- Department of Physiology, Jagiellonian University Medical College, 31-531 Cracow, Poland.
| | - Robert Pajdo
- Department of Physiology, Jagiellonian University Medical College, 31-531 Cracow, Poland.
| | - Grzegorz Ginter
- Department of Physiology, Jagiellonian University Medical College, 31-531 Cracow, Poland.
| | - Slawomir Kwiecien
- Department of Physiology, Jagiellonian University Medical College, 31-531 Cracow, Poland.
| | - Tomasz Brzozowski
- Department of Physiology, Jagiellonian University Medical College, 31-531 Cracow, Poland.
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18
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Hydrogen Sulfide Prevents Formation of Reactive Oxygen Species through PI3K/Akt Signaling and Limits Ventilator-Induced Lung Injury. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:3715037. [PMID: 28250891 PMCID: PMC5307128 DOI: 10.1155/2017/3715037] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 12/05/2016] [Accepted: 01/09/2017] [Indexed: 11/19/2022]
Abstract
The development of ventilator-induced lung injury (VILI) is still a major problem in mechanically ventilated patients. Low dose inhalation of hydrogen sulfide (H2S) during mechanical ventilation has been proven to prevent lung damage by limiting inflammatory responses in rodent models. However, the capacity of H2S to affect oxidative processes in VILI and its underlying molecular signaling pathways remains elusive. In the present study we show that ventilation with moderate tidal volumes of 12 ml/kg for 6 h led to an excessive formation of reactive oxygen species (ROS) in mice lungs which was prevented by supplemental inhalation of 80 parts per million of H2S. In addition, phosphorylation of the signaling protein Akt was induced by H2S. In contrast, inhibition of Akt by LY294002 during ventilation reestablished lung damage, neutrophil influx, and proinflammatory cytokine release despite the presence of H2S. Moreover, the ability of H2S to induce the antioxidant glutathione and to prevent ROS production was reversed in the presence of the Akt inhibitor. Here, we provide the first evidence that H2S-mediated Akt activation is a key step in protection against VILI, suggesting that Akt signaling limits not only inflammatory but also detrimental oxidative processes that promote the development of lung injury.
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19
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Xiao A, Li J, Liu T, Liu Z, Wei C, Xu X, Li Q, Li J. L-Cysteine enhances nutrient absorption via a cystathionine-β-synthase-derived H2 S pathway in rodent jejunum. Clin Exp Pharmacol Physiol 2016; 43:562-8. [PMID: 26901099 DOI: 10.1111/1440-1681.12562] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2015] [Revised: 01/26/2016] [Accepted: 02/15/2016] [Indexed: 01/17/2023]
Abstract
Hydrogen sulphide (H2 S) is generated endogenously from L-cysteine (L-Cys) by the enzymes cystathionine-β-synthase (CBS) and cystathionine-γ-lyase (CSE). In addition, L-Cys is commonly used as a precursor in the food and pharmaceutical industries. The aim of the present study is to determine whether L-Cys regulates intestinal nutrient transport. To that end, the presence of CBS and CSE in the jejunum epithelium was assessed by immunohistochemistry, Western blotting and the methylene blue assay. In addition, in vivo L-Cys (100 mg/kg, administered immediately after the glucose load) significantly increased blood glucose levels 30 min after the oral administration of glucose to mice. This effect of L-Cys was completely blocked by amino-oxyacetic acid (AOA; 50 mg/kg; administered at the same time as L-Cys) an inhibitor of CBS. Measurements of the short-circuit current (Isc) in the rat jejunum epithelium revealed that L-Cys (1 mmol/L; 6 min before the administration of L-alanine) enhances Na(+)-coupled L-alanine or glucose transport, and that this effect is inhibited by AOA (1 mmol/L;10 min before the administration of L-Cys), but not D,L-propargylglycine (PAG;1 mmol/L; 10 min before the administration of L-Cys), a CSE inhibitor. Notably, L-Cys-evoked enhancement of nutrient transport was alleviated by glibenclamide (Gli;0.1 mmol/L; 10 min before the administration of L-Cys), a K(+) channel blocker. Together, the data indicate that L-Cys enhances jejunal nutrient transport, suggesting a new approach to future treatment of nutrition-related maladies, including a range of serious health consequences linked to undernutrition.
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Affiliation(s)
- Ailin Xiao
- Department of Physiology, School of Medicine, Shandong University, Jinan, China.,Department of Medical Foundation, Hubei College of Chinese Medicine, Jingzhou, China
| | - Jing Li
- Department of Pathology, Central Hospital of Zibo, Zibo, China
| | - Tianjian Liu
- Department of Physiology, School of Medicine, Shandong University, Jinan, China
| | - Zhuxi Liu
- Department of Physiology, School of Medicine, Shandong University, Jinan, China
| | - Chuanfei Wei
- Department of Physiology, School of Medicine, Shandong University, Jinan, China
| | - Xiaomeng Xu
- Department of Physiology, School of Medicine, Shandong University, Jinan, China
| | - Qin Li
- Department of Physiology, School of Medicine, Shandong University, Jinan, China
| | - Jingxin Li
- Department of Physiology, School of Medicine, Shandong University, Jinan, China
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20
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Mard SA, Ahmadi I, Ahangarpour A, Gharib-Naseri MK, Badavi M. Delayed gastric emptying in diabetic rats caused by decreased expression of cystathionine gamma lyase and H 2 S synthesis: in vitro and in vivo studies. Neurogastroenterol Motil 2016; 28:1677-1689. [PMID: 27324218 DOI: 10.1111/nmo.12867] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 05/04/2016] [Indexed: 01/09/2023]
Abstract
BACKGROUND This study aimed to evaluate the role of H2 S on gastric emptying rate (GER) and also to determine the effect of gastric distention on mRNA and protein expression of cystathionine β-lyase (CBS) and cystathionine γ-synthase (CSE) in diabetic-gastroparetic and normal rats. METHODS Adult normal rats intraperitoneally received either propargylglycine (PAG), L-cysteine or NaHS 30 min prior to GER marker (acetaminophen) to investigate H2 S involvement in GER and the same protocols were performed in diabetes-induced gastroparesis rats. The role of calcitonin gene related peptide (CGRP) neurons in the prokinetic effect of endogenous H2 S on GER was determined. The level of CBS and CSE expressions in response to gastric distention were also determined. The effect of H2 S on frequency and tension of spontaneous contractions of gastric smooth muscle strips was investigated. KEY RESULTS Our results showed that: (i) H2 S and L-cysteine increased GER in gastroparetic and normal rats. (ii) The increased levels of CSE expression in response to gastric distention in diabetic rats were lower than in normal rats. (iii) PAG inhibited the excitatory effect of capsaicin on GER and on tension of spontaneous contractions of strips. (iv) Hydrogen sulphide increased the frequency and tension of spontaneous contractions of gastric strip muscles in normal and diabetic rats. CONCLUSIONS & INFERENCES The results showed that delayed GER in diabetic rats can be due to down-regulation of H2 S biosynthesis enzyme, CSE and suggested that a potential prokinetic role for H2 S to treat the delayed gastric emptying in diabetic patients.
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Affiliation(s)
- S A Mard
- Physiology Research Center (PRC), Research Center for Infectious Diseases of Digestive System, Dept. of Physiology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. ,
| | - I Ahmadi
- Physiology Research Center (PRC), Research Center for Infectious Diseases of Digestive System, Dept. of Physiology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - A Ahangarpour
- Physiology Research Center (PRC), Dept. of Physiology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - M K Gharib-Naseri
- Physiology Research Center (PRC), Dept. of Physiology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - M Badavi
- Physiology Research Center (PRC), Dept. of Physiology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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21
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Sobchak C, Fajardo AF, Shifrin Y, Pan J, Belik J. Gastric and pyloric sphincter muscle function and the developmental-dependent regulation of gastric content emptying in the rat. Am J Physiol Gastrointest Liver Physiol 2016; 310:G1169-75. [PMID: 27125274 DOI: 10.1152/ajpgi.00046.2016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 04/23/2016] [Indexed: 01/31/2023]
Abstract
Feeding intolerance is a common issue in the care of preterm neonates. The condition manifests as delayed emptying of gastric contents and represents a therapeutic challenge, since the factors accounting for its manifestations are unknown. The main goal of this study was to comparatively investigate the age-related function of rat gastric and pyloric smooth muscle and their putative regulators. We hypothesized that a reduced gastric muscle contraction potential early in life contributes to the delayed gastric emptying of the newborn. Newborn and adult rat gastric (fundus) and pyloric sphincter tissues were comparatively studied in vitro. Shortening of the tissue-specific dissociated smooth muscle cell was evaluated, and expression of the key regulatory proteins Rho-associated kinase 2 and myosin light chain kinase was determined. Gastric and pyloric smooth muscle cell shortening was significantly greater in the adult than the respective newborn counterpart. Expression of myosin light chain kinase and Rho-associated kinase 2 was developmentally regulated and increased with age. Pyloric sphincter muscle expresses a higher neuronal nitric oxide synthase and phosphorylated vasodilator-stimulated phosphoprotein content in newborn than adult tissue. Compared with later in life, the newborn rat gastropyloric muscle has a Ca(2+)-related reduced potential for contraction and the pyloric sphincter relaxation-dependent modulators are overexpressed. To the extent that these rodent data can be extrapolated to humans, the delayed gastric emptying in the newborn reflects reduced stomach muscle contraction potential, as opposed to increased pyloric sphincter tone.
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Affiliation(s)
- Curtis Sobchak
- Physiology and Experimental Medicine Program, Hospital for Sick Children Research Institute, University of Toronto, Toronto, Ontario, Canada; and
| | - A Felipe Fajardo
- Physiology and Experimental Medicine Program, Hospital for Sick Children Research Institute, University of Toronto, Toronto, Ontario, Canada; and
| | - Yulia Shifrin
- Physiology and Experimental Medicine Program, Hospital for Sick Children Research Institute, University of Toronto, Toronto, Ontario, Canada; and
| | - Jingyi Pan
- Physiology and Experimental Medicine Program, Hospital for Sick Children Research Institute, University of Toronto, Toronto, Ontario, Canada; and
| | - Jaques Belik
- Physiology and Experimental Medicine Program, Hospital for Sick Children Research Institute, University of Toronto, Toronto, Ontario, Canada; and Department of Paediatrics and Physiology, University of Toronto, Toronto, Ontario, Canada
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22
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Tang S, Huang D, An N, Chen D, Zhao D. A novel pathway for the production of H2 S by DAO in rat jejunum. Neurogastroenterol Motil 2016; 28:687-92. [PMID: 26813142 DOI: 10.1111/nmo.12765] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Accepted: 12/02/2015] [Indexed: 02/07/2023]
Abstract
BACKGROUND Hydrogen sulfide (H2 S) is endogenously generated from L-cysteine (L-Cys) by the enzymes cystathionine-β-synthase (CBS) and cystathionine-γ-Lyase (CSE). Hydrogen sulfide is also produced from D-cysteine (D-Cys) by D-Amino acid oxidase (DAO). METHODS The H2 S production was measured by the methylene blue assay. The expression of DAO was investigated by Western blotting and immunohistochemistry. The short-circuit current (Isc) was recorded using the Ussing chamber technique. KEY RESULTS The epithelium in rat jejunum possesses DAO, and generates H2 S. D-cysteine, originally used as a negative control for L-Cys, significantly increases the H2 S release, which is inhibited by I2CA, an inhibitor of DAO. In vitro study by Ussing chamber technique reveals that D-Cys decreases the Isc across the epithelium of the rat jejunum and enhances the Na(+) -coupled L-alanine transport. CONCLUSIONS & INFERENCES A novel pathway for the production of H2 S by DAO exists in rat jejunum.
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Affiliation(s)
- S Tang
- Department of Anesthesiology, Qilu Hospital, Shandong University, Jinan, China
| | - D Huang
- Department of Physiology, School of Medicine, Shandong University, Jinan, China
| | - N An
- Department of Physiology, School of Medicine, Shandong University, Jinan, China
| | - D Chen
- Department of Physiology, School of Medicine, Shandong University, Jinan, China
| | - D Zhao
- Department of Thoracic Surgery, Shandong Tumor Hospital, Jinan, China
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23
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Li Y, Xu J, Jiang F, Jiang Z, Liu C, Li L, Luo Y, Lu R, Mu Y, Liu Y, Xue B. G protein-coupled estrogen receptor is involved in modulating colonic motor function via nitric oxide release in C57BL/6 female mice. Neurogastroenterol Motil 2016; 28:432-42. [PMID: 26661936 DOI: 10.1111/nmo.12743] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 11/02/2015] [Indexed: 12/17/2022]
Abstract
BACKGROUND Estrogen may regulate gastrointestinal motor functions, but the mechanism(s) is not totally understood. Here, we investigated whether G protein-coupled estrogen receptor (GPER/GPR30) was involved in regulating colonic motor functions and explored the underlying physiological mechanisms. METHODS Adult female C57BL/6 mice were used. The expression and localization of GPER were examined by RT-PCR, western blot, and immuno-labeling. The role of GPER in modulating colonic motor functions was assessed by the bead propulsion test in vivo and organ bath experiments in vitro. KEY RESULTS GPER was expressed in colonic myenteric neurons. The colonic transit time (CTT) in proestrus and estrus was significantly longer than that in diestrus. In vivo treatment with the selective GPER blocker G15 significantly shortened CTT in proestrus and estrus. In ovariectomized mice, acute estrogen supplementation increased CTT, which could be abolished by G15 co-administration. The GPER agonist G-1 caused a concentration-dependent inhibition of carbachol -induced circular muscle strips contraction, which was abolished by tetrodotoxin and the neuronal nitric oxide synthase (nNOS) inhibitor N-propyl-l-arginine. G-1 stimulated NO production in isolated longitudinal muscle myenteric plexus and cultured myenteric neurons, which was dependent on nNOS. Immunofluorescence labeling showed co-localization of GPER with nNOS in the myenteric plexus. CONCLUSIONS & INFERENCES We suggest that activation of GPER exerts an inhibitory effect on colonic motility by promoting NO release from myenteric nitrergic nerves. These results raise a possibility that GPER may be involved in mediating the inhibitory effect of estrogen on colonic motor functions, via a non-genomic, neurogenic mechanism.
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Affiliation(s)
- Y Li
- Department of Pathophysiology, Medical School, Shandong University, Jinan, China
| | - J Xu
- Department of Pathophysiology, Medical School, Shandong University, Jinan, China
| | - F Jiang
- Department of Pathophysiology, Medical School, Shandong University, Jinan, China
| | - Z Jiang
- Department of Pathophysiology, Medical School, Shandong University, Jinan, China
| | - C Liu
- Department of Physiology, Medical School, Shandong University, Jinan, China
| | - L Li
- Department of Pathophysiology, Medical School, Shandong University, Jinan, China
| | - Y Luo
- Department of Pathophysiology, Medical School, Shandong University, Jinan, China
| | - R Lu
- Department of Pathophysiology, Medical School, Shandong University, Jinan, China
| | - Y Mu
- Department of Pathophysiology, Medical School, Shandong University, Jinan, China
| | - Y Liu
- Department of Pathophysiology, Medical School, Shandong University, Jinan, China
| | - B Xue
- Department of Pathophysiology, Medical School, Shandong University, Jinan, China
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24
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Inhibitory action of hydrogen sulfide on esophageal striated muscle motility in rats. Eur J Pharmacol 2016; 771:123-9. [PMID: 26687631 DOI: 10.1016/j.ejphar.2015.12.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 11/24/2015] [Accepted: 12/09/2015] [Indexed: 02/08/2023]
Abstract
Hydrogen sulfide (H2S) is recognized as a gaseous transmitter and has many functions including regulation of gastrointestinal motility. The aim of the present study was to clarify the effects of H2S on the motility of esophageal striated muscle in rats. An isolated segment of the rat esophagus was placed in an organ bath and mechanical responses were recorded using a force transducer. Electrical stimulation of the vagus nerve evoked contractile response in the esophageal segment. The vagally mediated contraction was inhibited by application of an H2S donor. The H2S donor did not affect the contraction induced by electrical field stimulation, which can excite the striated muscle directly, not via vagus nerves. These results show that H2S has an inhibitory effect on esophageal motility not by directly attenuating striated muscle contractility but by blocking vagal motor nerve activity and/or neuromuscular transmissions. The inhibitory actions of H2S were not affected by pretreatment with the transient receptor potential vanniloid-1 blocker, transient receptor potential ankyrin-1 blocker, nitric oxide synthase inhibitor, blockers of potassium channels, and ganglionic blocker. RT-PCR and Western blot analysis revealed the expression of H2S-producing enzymes in esophageal tissue, whereas application of inhibitors of H2S-producing enzymes did not change vagally evoked contractions in the esophageal striated muscle. These findings suggest that H2S, which might be produced in the esophageal tissue endogenously, can regulate the motor activity of esophageal striated muscle via a novel inhibitory neural pathway.
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25
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Currò D. The Modulation of Potassium Channels in the Smooth Muscle as a Therapeutic Strategy for Disorders of the Gastrointestinal Tract. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2016; 104:263-305. [PMID: 27038377 DOI: 10.1016/bs.apcsb.2015.12.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Alterations of smooth muscle contractility contribute to the pathophysiology of important functional gastrointestinal disorders (FGIDs) such as functional dyspepsia and irritable bowel syndrome. Consequently, drugs that decrease smooth muscle contractility are effective treatments for these diseases. Smooth muscle contraction is mainly triggered by Ca(2+) influx through voltage-dependent channels located in the plasma membrane. Thus, the modulation of the membrane potential results in the regulation of Ca(2+) influx and cytosolic levels. K(+) channels play fundamental roles in these processes. The open probability of K(+) channels increases in response to various stimuli, including membrane depolarization (voltage-gated K(+) [K(V)] channels) and the increase in cytosolic Ca(2+) levels (Ca(2+)-dependent K(+) [K(Ca)] channels). K(+) channel activation is mostly associated with outward K(+) currents that hyperpolarize the membrane and reduce cell excitability and contractility. In addition, some K(+) channels are open at the resting membrane potential values of the smooth muscle cells in some gut segments and contribute to set the resting membrane potential itself. The closure of these channels induces membrane depolarization and smooth muscle contraction. K(V)1.2, 1.5, 2.2, 4.3, 7.4 and 11.1, K(Ca)1.1 and 2.3, and inwardly rectifying type 6K(+) (K(ir)6) channels play the most important functional roles in the gastrointestinal smooth muscle. Activators of all these channels may theoretically relax the gastrointestinal smooth muscle and could therefore be promising new therapeutic options for FGID. The challenge of future drug research and development in this area will be to synthesize molecules selective for the channel assemblies expressed in the gastrointestinal smooth muscle.
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Affiliation(s)
- Diego Currò
- Institute of Pharmacology, School of Medicine, Catholic University of the Sacred Heart, Rome, Italy.
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26
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Hydrogen sulfide-induced itch requires activation of Cav3.2 T-type calcium channel in mice. Sci Rep 2015; 5:16768. [PMID: 26602811 PMCID: PMC4658482 DOI: 10.1038/srep16768] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 10/19/2015] [Indexed: 01/02/2023] Open
Abstract
The contributions of gasotransmitters to itch sensation are largely unknown. In this
study, we aimed to investigate the roles of hydrogen sulfide (H2S), a
ubiquitous gasotransmitter, in itch signaling. We found that intradermal injection
of H2S donors NaHS or Na2S, but not GYY4137 (a slow-releasing
H2S donor), dose-dependently induced scratching behavior in a
μ-opioid receptor-dependent and histamine-independent manner in mice.
Interestingly, NaHS induced itch via unique mechanisms that involved
capsaicin-insensitive A-fibers, but not TRPV1-expressing C-fibers that are
traditionally considered for mediating itch, revealed by depletion of
TRPV1-expressing C-fibers by systemic resiniferatoxin treatment. Moreover, local
application of capsaizapine (TRPV1 blocker) or HC-030031 (TRPA1 blocker) had no
effects on NaHS-evoked scratching. Strikingly, pharmacological blockade and
silencing of Cav3.2 T-type calcium channel by mibefradil, ascorbic acid,
zinc chloride or Cav3.2 siRNA dramatically decreased NaHS-evoked
scratching. NaHS induced robust alloknesis (touch-evoked itch), which was inhibited
by T-type calcium channels blocker mibefradil. Compound 48/80-induced itch was
enhanced by an endogenous precursor of H2S (L-cysteine) but attenuated by
inhibitors of H2S-producing enzymes cystathionine γ-lyase and
cystathionine β-synthase. These results indicated that H2S,
as a novel nonhistaminergic itch mediator, may activates Cav3.2 T-type
calcium channel, probably located at A-fibers, to induce scratching and alloknesis
in mice.
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27
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Singh SB, Lin HC. Hydrogen Sulfide in Physiology and Diseases of the Digestive Tract. Microorganisms 2015; 3:866-89. [PMID: 27682122 PMCID: PMC5023273 DOI: 10.3390/microorganisms3040866] [Citation(s) in RCA: 152] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 10/19/2015] [Accepted: 11/04/2015] [Indexed: 12/29/2022] Open
Abstract
Hydrogen sulfide (H2S) is a Janus-faced molecule. On one hand, several toxic functions have been attributed to H2S and exposure to high levels of this gas is extremely hazardous to health. On the other hand, H2S delivery based clinical therapies are being developed to combat inflammation, visceral pain, oxidative stress related tissue injury, thrombosis and cancer. Since its discovery, H2S has been found to have pleiotropic effects on physiology and health. H2S is a gasotransmitter that exerts its effect on different systems, such as gastrointestinal, neuronal, cardiovascular, respiratory, renal, and hepatic systems. In the gastrointestinal tract, in addition to H2S production by mammalian cystathionine-β-synthase (CBS), cystathionine-γ-lyase (CSE), H2S is also generated by the metabolic activity of resident gut microbes, mainly by colonic Sulfate-Reducing Bacteria (SRB) via a dissimilatory sulfate reduction (DSR) pathway. In the gut, H2S regulates functions such as inflammation, ischemia/ reperfusion injury and motility. H2S derived from gut microbes has been found to be associated with gastrointestinal disorders such as ulcerative colitis, Crohn’s disease and irritable bowel syndrome. This underscores the importance of gut microbes and their production of H2S on host physiology and pathophysiology.
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Affiliation(s)
- Sudha B Singh
- Section of Gastroenterology, Medicine Service, New Mexico VA Health Care System, Albuquerque, NM 87108, USA.
- Division of Gastroenterology and Hepatology, Department of Medicine, the University of New Mexico, Albuquerque, NM 87131, USA.
| | - Henry C Lin
- Section of Gastroenterology, Medicine Service, New Mexico VA Health Care System, Albuquerque, NM 87108, USA.
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28
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H2S, a novel gasotransmitter, involves in gastric accommodation. Sci Rep 2015; 5:16086. [PMID: 26531221 PMCID: PMC4632036 DOI: 10.1038/srep16086] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Accepted: 10/07/2015] [Indexed: 01/19/2023] Open
Abstract
H2S is produced mainly by two enzymes:cystathionine-β-synthase (CBS) and cystathionine-γ-lyase (CSE), using L-cysteine (L-Cys) as the substrate. In this study, we investigated the role of H2S in gastric accommodation using CBS+/− mice, immunohistochemistry, immunoblot, methylene blue assay, intragastric pressure (IGP) recording and electrical field stimulation (EFS). Mouse gastric fundus expressed H2S-generating enzymes (CBS and CSE) and generated detectable amounts of H2S. The H2S donor, NaHS or L-Cys, caused a relaxation in either gastric fundus or body. The gastric compliance was significantly increased in the presence of L-Cys (1 mM). On the contrary, AOAA, an inhibitor for CBS, largely inhibited gastric compliance. Consistently, CBS+/− mice shows a lower gastric compliance. However, PAG, a CSE inhibitor, had no effect on gastric compliances. L-Cys enhances the non-adrenergic, non-cholinergic (NANC) relaxation of fundus strips, but AOAA reduces the magnitude of relaxations to EFS. Notably, the expression level of CBS but not CSE protein was elevated after feeding. Consistently, the production of H2S was also increased after feeding in mice gastric fundus. In addition, AOAA largely reduced food intake and body weight in mice. Furthermore, a metabolic aberration of H2S was found in patients with functional dyspepsia (FD). In conclusion, endogenous H2S, a novel gasotransmitter, involves in gastric accommodation.
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29
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Ujike A, Otsuguro KI, Miyamoto R, Yamaguchi S, Ito S. Bidirectional effects of hydrogen sulfide via ATP-sensitive K+ channels and transient receptor potential A1 channels in RIN14B cells. Eur J Pharmacol 2015; 764:463-470. [DOI: 10.1016/j.ejphar.2015.07.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2015] [Revised: 07/09/2015] [Accepted: 07/10/2015] [Indexed: 12/22/2022]
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30
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Yamane S, Kanno T, Nakamura H, Fujino H, Murayama T. Hydrogen sulfide-mediated regulation of contractility in the mouse ileum with electrical stimulation: roles of L-cysteine, cystathionine β-synthase, and K+ channels. Eur J Pharmacol 2014; 740:112-20. [PMID: 25008073 DOI: 10.1016/j.ejphar.2014.06.054] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 06/25/2014] [Accepted: 06/27/2014] [Indexed: 01/20/2023]
Abstract
Hydrogen sulfide (H2S) is considered to be a signaling molecule. The precise mechanisms underlying H2S-related events, including the producing enzymes and target molecules in gastrointestinal tissues, have not been elucidated in detail. We herein examined the involvement of H2S in contractions induced by repeated electrical stimulations (ES). ES-induced contractions were neurotoxin-sensitive and increased by aminooxyacetic acid, an inhibitor of cystathionine β-synthase (CBS) and cystathionine γ-lyase, but not by D,L-propargylglycine, a selective inhibitor of cystathionine γ-lyase, in an ES trial-dependent manner. ES-induced contractions were markedly decreased in the presence of L-cysteine. This response was inhibited by aminooxyacetic acid and an antioxidant, and accelerated by L-methionine, an activator of CBS. The existence of CBS was confirmed. NaHS transiently inhibited ES- and acetylcholine-induced contractions, and sustainably decreased basal tone for at least 20 min after its addition. The treatment with glibenclamide, an ATP-sensitive K+ channel blocker, reduced both the L-cysteine response and NaHS-induced inhibition of contractions. The NaHS-induced decrease in basal tone was inhibited by apamin, a small conductance Ca2+-activated K+ channel blocker. These results suggest that H2S may be endogenously produced via CBS in ES-activated enteric neurons, and regulates contractility via multiple K+ channels in the ileum.
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Affiliation(s)
- Satoshi Yamane
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, Chiba University, Inohana 1-8-1, Chuo-ku, Chiba 260-8675, Japan
| | - Toshio Kanno
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, Chiba University, Inohana 1-8-1, Chuo-ku, Chiba 260-8675, Japan
| | - Hiroyuki Nakamura
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, Chiba University, Inohana 1-8-1, Chuo-ku, Chiba 260-8675, Japan
| | - Hiromichi Fujino
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, Chiba University, Inohana 1-8-1, Chuo-ku, Chiba 260-8675, Japan
| | - Toshihiko Murayama
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, Chiba University, Inohana 1-8-1, Chuo-ku, Chiba 260-8675, Japan.
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