1
|
Zouaghi MO, Bensalah D, Hassen S, Arfaoui Y, Mansour L, Özdemir N, Bülbül H, Gurbuz N, Özdemir I, Hamdi N. Benzimidazole derivatives as a new scaffold of anticancer agents: Synthesis, optical properties, crystal structure and DFT calculations. Heliyon 2024; 10:e32905. [PMID: 39022063 PMCID: PMC11252883 DOI: 10.1016/j.heliyon.2024.e32905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 06/03/2024] [Accepted: 06/11/2024] [Indexed: 07/20/2024] Open
Abstract
The absolute necessity to fight some class of tumour is perceived as serious health concerns, and the discovery and development of effective anticancer agents are urgently needed. So, the novel benzimidazole derivatives (2a-b) were designed, synthesized, with their structures rigorously characterized using single X-ray crystallography, FT-IR, UV, and NMR spectroscopy, alongside elemental analysis. The geometric structures were optimized using density functional theory (DFT) calculations performed at the ωB97X-D/cc-pVDZ level, yielding good agreement with experimental XRD data. The studied salt complexes exhibited the ability to absorb UV light at 275 nm. Furthermore, anticancer activity of the compounds was screened against (MDA-MB-231, MCF-7, HT-29 and healthy cell line (HF)) and revealed the remarkable efficacy of select newly synthesized Benzimidazole derivatives (2a-b). Compound 2a showed relative significant higher cytotoxicity (165.02) in MDA-MB-231 cancer cell line. This underscores their promising potential in therapeutic applications, affirming their role as valuable contenders in the pursuit of novel anticancer agents.
Collapse
Affiliation(s)
- Mohamed Oussama Zouaghi
- Laboratory of Characterizations, Applications & Modeling of Materials (LR18ES08), Department of Chemistry, Faculty of Sciences of Tunis, University of Tunis El Manar, 2092, Tunisia
| | - Donia Bensalah
- Research Laboratory of Environmental Sciences and Technologies (LR16ES09), Higher Institute of Environmental Sciences and Technology, University of Carthage, Hammam-Lif, Tunisia
| | - Sabri Hassen
- Laboratory of Characterizations, Applications & Modeling of Materials (LR18ES08), Department of Chemistry, Faculty of Sciences of Tunis, University of Tunis El Manar, 2092, Tunisia
| | - Youssef Arfaoui
- Laboratory of Characterizations, Applications & Modeling of Materials (LR18ES08), Department of Chemistry, Faculty of Sciences of Tunis, University of Tunis El Manar, 2092, Tunisia
| | - Lamjed Mansour
- Zoology Department, College of Science, King Saud University, Saudi Arabia, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Namık Özdemir
- Department of Physics, Faculty of Science, Ondokuz Mayıs University, 55139, Samsun, Turkey
| | - Hakan Bülbül
- Department of Physics, Faculty of Science, Ondokuz Mayıs University, 55139, Samsun, Turkey
| | - Nevin Gurbuz
- İnönü University, Faculty of Science and Art, Department of Chemistry, Malatya, 44280, Turkey
- İnönü University, Catalysis Research and Application Center, Malatya, 44280, Turkey
| | - Ismail Özdemir
- İnönü University, Faculty of Science and Art, Department of Chemistry, Malatya, 44280, Turkey
- İnönü University, Catalysis Research and Application Center, Malatya, 44280, Turkey
| | - Naceur Hamdi
- Research Laboratory of Environmental Sciences and Technologies (LR16ES09), Higher Institute of Environmental Sciences and Technology, University of Carthage, Hammam-Lif, Tunisia
| |
Collapse
|
2
|
Kajihara Y, Shimoyama T, Mizuki I. Evaluation of the effects of a proton pump inhibitor on Helicobacter pylori stool antigen testing. Helicobacter 2023; 28:e12961. [PMID: 36828667 DOI: 10.1111/hel.12961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/06/2023] [Accepted: 02/15/2023] [Indexed: 02/26/2023]
Abstract
BACKGROUND Some patients find it difficult to discontinue proton pump inhibitors (PPIs). Unlike the 13 C-urea breath test (UBT), the stool antigen test (SAT), particularly when domestically produced kits are used, may be less likely to yield false-negative results. METHODS This prospective study included a convenience series of 35 healthy Japanese subjects. Based on a statistical calculation, acceptable numbers of subjects were considered at least 21 and 11 with and without Helicobacter pylori (H. pylori) infection, respectively. The H. pylori infection was determined using the UBT or rapid urease test. SATs were performed with three novel domestically produced kits (the rapid immunochromatography tests Quick Navi™-H. pylori [Navi™] and Quick Chaser® H. pylori [Chaser®], and the bioluminescent enzyme immunoassay test BLEIA® 'EIKEN' H. pylori Antigen [BLEIA®]) before and after oral PPI administration (30 mg lansoprazole once daily for 14 days). For each kit, the sensitivities and specificities were calculated and compared before and after PPI administration. Furthermore, the cutoff index (COI) values of BLEIA® before and after PPI administration were compared in H. pylori-infected subjects. RESULTS H. pylori infection was detected in 68.6% (24/35) of the included subjects. The sensitivities and specificities before versus after PPI administration were as follows: 79.2% (19/24) and 100.0% (11/11) versus 75.0% (18/24) and 100.0% (11/11) for Navi™, respectively (p = 1); 87.5% (21/24) and 100.0% (11/11) versus 75.0% (18/24) and 100.0% (11/11) for Chaser®, respectively (p = .371); 100.0% (24/24) and 100.0% (11/11) versus 95.8% (23/24) and 100.0% (11/11) for BLEIA®, respectively (p = 1). The median COI values of BLEIA® before and after PPI administration were 1389.0 and 3207.25, respectively (p = .0839). CONCLUSIONS In stool specimens, H. pylori antigenicity is maintained even during PPI use. SAT using a bioluminescent enzyme immunoassay is particularly recommended because of its extremely high sensitivity.
Collapse
Affiliation(s)
- Yusaku Kajihara
- Department of Gastroenterology, Fuyoukai Murakami Hospital, Aomori, Japan
| | | | - Ichiro Mizuki
- Department of Gastroenterology, Fuyoukai Murakami Hospital, Aomori, Japan
| |
Collapse
|
3
|
Ethyl 12-Sulfamoyl-abieta-8,11,13-trien-18-oate. MOLBANK 2023. [DOI: 10.3390/m1584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023] Open
Abstract
We synthesized the novel compound ethyl 12-sulfamoyl-abieta-8,11,13-trien-18-oate in good yield from ethyl 12-sulfo-abieta-8,11,13-trien-18-oate via a two-step protocol. The product was comprehensively characterized by one- and two-dimensional NMR methods, single-crystal X-ray diffraction, IR spectroscopy, and high-resolution mass spectrometry.
Collapse
|
4
|
Benzylic functionalization of dehydroabietane derivatives as a convenient way to sulfur compounds. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02234-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
5
|
Oliaei S, Habibi D, Heydari S, Karamian R, Ranjbar N. Design, preparation, biological investigations and application of a benzoguanamine-based nickel complex for the synthesis of benzimidazoles. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
6
|
Hamad A, Abbas Khan M, Ahmad I, Imran A, Khalil R, Al-Adhami T, Miraz Rahman K, Quratulain, Zahra N, Shafiq Z. Probing sulphamethazine and sulphamethoxazole based Schiff bases as urease inhibitors; synthesis, characterization, molecular docking and ADME evaluation. Bioorg Chem 2020; 105:104336. [DOI: 10.1016/j.bioorg.2020.104336] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 09/27/2020] [Accepted: 09/29/2020] [Indexed: 12/11/2022]
|
7
|
Aman H, Rashid N, Ashraf Z, Bibi A, Chen HT, Sathishkumar N. Synthesis, density functional theory (DFT) studies and urease inhibition activity of chiral benzimidazoles. Heliyon 2020; 6:e05187. [PMID: 33088954 PMCID: PMC7567930 DOI: 10.1016/j.heliyon.2020.e05187] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 08/02/2020] [Accepted: 10/05/2020] [Indexed: 12/24/2022] Open
Abstract
A variety of benzimidazole by the heterocyclization of orthophenylenediamine were synthesized in 69–86% yields. The synthesized compounds 3a-f and 6a-f were characterized and further investigated as jack bean urease inhibitors. Density functional theory (DFT) studies were performed utilizing the basis set B3LYP/6-31G (d, p) to acquire perception into their structural properties. Frontier molecular orbital (FMO) analysis of all compounds 3a–f and 6a-f was computed at the same level of theory to get a notion about their chemical reactivity and stability. The mapping of the molecular electrostatic potential (MEP) over the entire stabilized molecular geometry indicated the reactive centers. They exhibited urease inhibition activity with IC50 between 22 and 99 μM. Compounds containing withdrawing groups on the benzene ring (3d, 6d) were not showing significant urease inhibition. The value obtained for 3a, 3b, 3f had shown their significant urease inhibition for both theoretical and experimental. Notably, the compound having S-configuration (3a) (22.26 ± 6.2 μM) was good as compared to its R enantiomer 3f (31.42 ± 23.3 μM). Despite this, we elaborated the computational studies of the corresponding compounds, to highlight electronic effect which include HOMO, LUMO, Molecular electrostatic potential (MEP) and molecular docking.
Collapse
Affiliation(s)
- Hasil Aman
- Department of Chemistry, Faculty of Science, Alama Iqbal Open University, Islamabad 44000, Pakistan.,Department of Chemistry, School of Science, Chung Yuan Christian University, Taoyuan 32023, Taiwan
| | - Naghmana Rashid
- Department of Chemistry, Faculty of Science, Alama Iqbal Open University, Islamabad 44000, Pakistan
| | - Zaman Ashraf
- Department of Chemistry, Faculty of Science, Alama Iqbal Open University, Islamabad 44000, Pakistan
| | - Aamna Bibi
- Department of Chemistry, School of Science, Chung Yuan Christian University, Taoyuan 32023, Taiwan
| | - Hsin-Tsung Chen
- Department of Chemistry, School of Science, Chung Yuan Christian University, Taoyuan 32023, Taiwan
| | - Nadaraj Sathishkumar
- Department of Chemistry, School of Science, Chung Yuan Christian University, Taoyuan 32023, Taiwan
| |
Collapse
|
8
|
Abdul Fattah T, Saeed A, Channar PA, Ashraf Z, Abbas Q, Hassan M, Larik FA. Synthesis, enzyme inhibitory kinetics, and computational studies of novel 1-(2-(4-isobutylphenyl) propanoyl)-3-arylthioureas as Jack bean urease inhibitors. Chem Biol Drug Des 2017; 91:434-447. [DOI: 10.1111/cbdd.13090] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 08/01/2017] [Accepted: 08/11/2017] [Indexed: 12/13/2022]
Affiliation(s)
| | - Aamer Saeed
- Department of Chemistry; Quaid-i-Azam University; Islamabad Pakistan
| | | | - Zaman Ashraf
- Department of Chemistry; Allama Iqbal Open University; Islamabad Pakistan
| | - Qamar Abbas
- Department of Biology; College of Natural Sciences; Kongju National University; Gongju Korea
| | - Mubashir Hassan
- Department of Biology; College of Natural Sciences; Kongju National University; Gongju Korea
| | - Fayaz Ali Larik
- Department of Chemistry; Quaid-i-Azam University; Islamabad Pakistan
| |
Collapse
|
9
|
Saeed A, Mahmood SU, Rafiq M, Ashraf Z, Jabeen F, Seo SY. Iminothiazoline-Sulfonamide Hybrids as Jack Bean Urease Inhibitors; Synthesis, Kinetic Mechanism and Computational Molecular Modeling. Chem Biol Drug Des 2015; 87:434-43. [PMID: 26496515 DOI: 10.1111/cbdd.12675] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 10/13/2015] [Accepted: 10/14/2015] [Indexed: 11/29/2022]
Abstract
The present work reports the synthesis of several 2-iminothiazoline derivatives of sulfanilamide (3a-j) as inhibitors of jack bean ureases. The title compounds were synthesized by the heterocyclization of sulfanilamide thioureas with propragyl bromide in dry ethanol in the presence of 1,8-Diazabicyclo[5.4.0]undec-7-ene as a base. All of the compounds showed higher urease inhibitory activity than the standard thiourea. The compounds (3h) and (3i) exhibited excellent enzyme inhibitory activity with IC50 0.064 and 0.058 μm, respectively, while IC50 of thiourea is 20.9 μm. The kinetic mechanism analyzed by Dixon plot showed that compound (3h) is a mixed-type inhibitor while (3i) is a competitive one. Docking studies suggested that Asp633, Ala636, His492, Ala440, Lue523, Asp494 and Arg439 are the major interacting residues in the binding site of the protein and may have an instrumental role in the inhibition of enzyme's function. 2-iminothiazoline analogues (3a-j) showed good docking score (-10.6466 to -8.7215 Kcal/mol) and binding energy (London dG ranging from -14.4825 to -10.4087 Kcal/mol) which is far better than the standard thiourea (binding score in S field -4.5790 Kcal/mol London dG -4.7726 Kcal/mol). Our results inferred compound (3i) may serve as a structural model for the design of most potent urease inhibitors.
Collapse
Affiliation(s)
- Aamer Saeed
- Department of Chemistry, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Shams-Ul Mahmood
- Department of Chemistry, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Muhammad Rafiq
- Department of Biology, College of Natural Sciences, Kongju National University, Gongju, 314-701, Korea
| | - Zaman Ashraf
- Department of Biology, College of Natural Sciences, Kongju National University, Gongju, 314-701, Korea.,Department of Chemistry, Allama Iqbal Open University, Islamabad, 44000, Pakistan
| | - Farukh Jabeen
- Florida Center of Heterocyclic Compounds, University of Florida, Gainesville, FL, 32601, USA.,Center for Computationally assisted Science and Technology, North Dakota State University, Fargo, ND, 58102, USA
| | - Sung-Yum Seo
- Department of Biology, College of Natural Sciences, Kongju National University, Gongju, 314-701, Korea
| |
Collapse
|
10
|
Tretyakova EV, Smirnova IE, Salimova EV, Odinokov VN. Synthesis and antiviral activity of maleopimaric and quinopimaric acids' derivatives. Bioorg Med Chem 2015; 23:6543-50. [PMID: 26372075 DOI: 10.1016/j.bmc.2015.09.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 09/01/2015] [Accepted: 09/03/2015] [Indexed: 11/24/2022]
Abstract
A series of maleopimaric and quinopimaric acids' derivatives modified in the E-ring, at the carbonyl- and carboxyl-groups were synthesized and evaluated for their activity in vitro against respiratory viruses (influenza; rhinovirus; adenovirus; and SARS), papilloma virus, and hepatitis B and C viruses. The antiviral screening of levopimaric acid diene adducts derivatives was carried out with minimal effect on SARS and influenza type B viruses. Excellent antiviral activity of the ozonolysis product of maleopimaric acid and dihydroquinopimaric methyl-(2-methoxycarbonyl)ethylene amide was found toward papilloma virus (HPV-11 strain) with the selectivity index of SI 30 and 20, respectively. Methyl (2-methoxycarbonyl)ethylene-, 1β-hydroxy-5'-kaprolaktamo- and 4β-hydroxy-4α,14α-epoxy-13(15)-ene-dihydroquinopimaric acid derivatives have also shown activity against replication of HCV nucleic acid and low toxicity.
Collapse
Affiliation(s)
- Elena V Tretyakova
- Institute of Petrochemistry and Catalysis of the Russian Academy of Sciences, 141 Prospect Oktyabrya, 450075 Ufa, Russian Federation.
| | - Irina E Smirnova
- Ufa Institute of Chemistry of the Russian Academy of Science, 71 Prospect Oktyabrya, 450054 Ufa, Russian Federation
| | - Elena V Salimova
- Institute of Petrochemistry and Catalysis of the Russian Academy of Sciences, 141 Prospect Oktyabrya, 450075 Ufa, Russian Federation
| | - Victor N Odinokov
- Institute of Petrochemistry and Catalysis of the Russian Academy of Sciences, 141 Prospect Oktyabrya, 450075 Ufa, Russian Federation
| |
Collapse
|
11
|
Nishizawa T, Suzuki H, Kanai T, Yahagi N. Proton pump inhibitor alone vs proton pump inhibitor plus mucosal protective agents for endoscopic submucosal dissection-induced ulcer: a systematic review and meta-analysis. J Clin Biochem Nutr 2015. [PMID: 25759512 DOI: 10.3164/jcbn.14.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Mucosal protective agents may improve healing of patients with endoscopic submucosal dissection-induced ulcers. The present study systematically evaluated published clinical trials to determine whether combined therapeutic use of mucosal protective agents and proton pump inhibitors can improve the outcome of patients with endoscopic submucosal dissection-induced ulcers compared to treatment with proton pump inhibitors alone. PubMed, the Cochrane Library, and the Igaku-Chuo-Zasshi database were searched to identify eligible randomized trials for systematic review. We identified 11 randomized trials for inclusion in our study (1,160 patients). Pooled endoscopic submucosal dissection-induced ulcer healing rates were 45.8% and 34.4% for patients with or without mucosal protective agents, respectively. The odds ratio was 2.28 (95% confidence interval, 1.57-3.31) with no significant study heterogeneity. In conclusion, the systematic review and meta-analysis showed that the combined therapeutic use of proton pump inhibitors and mucosal protective agents improved healing rates of endoscopic submucosal dissection-induced ulcers compared to treatment with proton pump inhibitor monotherapy.
Collapse
Affiliation(s)
- Toshihiro Nishizawa
- Division of Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan ; Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Hidekazu Suzuki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Naohisa Yahagi
- Division of Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| |
Collapse
|
12
|
Ahn JY, Choi CH, Lee JW, Park SJ, Kim JW, Chang SK, Han SB. The effect of sequential therapy with lansoprazole and ecabet sodium in treating iatrogenic gastric ulcer after endoscopic submucosal dissection: a randomized prospective study. J Dig Dis 2015; 16:75-82. [PMID: 25420889 DOI: 10.1111/1751-2980.12214] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Ecabet sodium (ES) is a new non-systemic anti-ulcer agent belonging to the category of gastroprotective agents. In this study we aimed to compare the efficacy of a combination therapy with lansoprazole (LS) followed by ES with LS alone in treating endoscopic submucosal dissection (ESD)-induced iatrogenic gastric ulcers. METHODS Patients diagnosed with gastric adenomas or early gastric cancer were randomly divided into either the LS group (30 mg once daily for 4 weeks; n = 45) or the LS + ES group (LS 30 mg once daily for one week followed by ES 1500 mg twice daily for 3 weeks; n = 45). Four weeks after ESD, a follow-up endoscopy was conducted to evaluate the proportions of ulcer reduction and ulcer stages in the two groups. RESULTS In all, 79 patients were included in the final analyses. Both treatment modalities were well-tolerated in most patients, with a drug compliance of over 80%. There were no significant differences between the two groups in terms of the proportions of ulcer reduction (0.9503 ± 0.1215 in the LS group vs 0.9192 ± 0.0700 in the LS + ES group, P = 0.169) or ulcer stage (P = 0.446). The prevalence of adverse events related to drugs and bleeding were also similar between the two groups. CONCLUSION Sequential therapy with LS + ES is as effective as LS alone against ESD-induced gastric ulcers.
Collapse
Affiliation(s)
- Ji Yong Ahn
- Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | | | | | | | | | | | | |
Collapse
|
13
|
Nishizawa T, Suzuki H, Kanai T, Yahagi N. Proton pump inhibitor alone vs proton pump inhibitor plus mucosal protective agents for endoscopic submucosal dissection-induced ulcer: a systematic review and meta-analysis. J Clin Biochem Nutr 2014; 56:85-90. [PMID: 25759512 PMCID: PMC4345174 DOI: 10.3164/jcbn.14-101] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Accepted: 08/26/2014] [Indexed: 01/17/2023] Open
Abstract
Mucosal protective agents may improve healing of patients with endoscopic submucosal dissection-induced ulcers. The present study systematically evaluated published clinical trials to determine whether combined therapeutic use of mucosal protective agents and proton pump inhibitors can improve the outcome of patients with endoscopic submucosal dissection-induced ulcers compared to treatment with proton pump inhibitors alone. PubMed, the Cochrane Library, and the Igaku-Chuo-Zasshi database were searched to identify eligible randomized trials for systematic review. We identified 11 randomized trials for inclusion in our study (1,160 patients). Pooled endoscopic submucosal dissection-induced ulcer healing rates were 45.8% and 34.4% for patients with or without mucosal protective agents, respectively. The odds ratio was 2.28 (95% confidence interval, 1.57–3.31) with no significant study heterogeneity. In conclusion, the systematic review and meta-analysis showed that the combined therapeutic use of proton pump inhibitors and mucosal protective agents improved healing rates of endoscopic submucosal dissection-induced ulcers compared to treatment with proton pump inhibitor monotherapy.
Collapse
Affiliation(s)
- Toshihiro Nishizawa
- Division of Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan ; Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Hidekazu Suzuki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Naohisa Yahagi
- Division of Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| |
Collapse
|
14
|
Wang Y, Wang B, Lv ZF, Yang Y, Wang F, Wang H, Chen S, Xie Y, Zhou X. Efficacy and safety of ecabet sodium as an adjuvant therapy for Helicobacter pylori eradication: a systematic review and meta-analysis. Helicobacter 2014; 19:372-81. [PMID: 24826809 DOI: 10.1111/hel.12136] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
BACKGROUND Several studies have reported that the application of ecabet sodium during the eradication of Helicobacter pylori can improve the eradication rate and reduce therapy-associated side effects. However, the efficacy and safety of this therapy are controversial. OBJECTIVES To determine whether ecabet sodium improves the eradication rate of H. pylori and examine treatment safety by conducting a meta-analysis based on randomized controlled trials (RCTs). METHODS Literature searches were conducted in the following databases: PubMed, Embase, the Cochrane Library, the Science Citation Index, the China National Knowledge Infrastructure Database, and the Wanfang Database. A meta-analysis of all RCTs comparing ecabet sodium supplementation with nonecabet sodium-containing therapy was performed. RESULTS Thirteen RCTs that included a total of 1808 patients were assessed. The meta-analysis showed that the eradication rate in the ecabet sodium-containing quadruple therapy group was higher than that in the standard triple therapy group (84.5% vs 74.55%, OR 1.757 (95%CI: 1.307 to 2.362), p < .001). The analysis also showed that the eradication rate in the ecabet sodium-containing triple therapy group was significantly higher than that in the PPI plus amoxicillin or clarithromycin therapy group (74.6% vs 43.9%,OR 3.727 (95%CI: 2.320 to 5.988), p < .001)(ITT), (74.6% vs 43.9%,OR 3.863 (95%CI: 2.369 to 6.298), p < .001) (PP). Furthermore, our meta-analysis suggested that the occurrence of side effects did not significantly differ between patients receiving ecabet sodium-containing therapy and patients receiving nonecabet sodium-containing therapy (14.0% vs 13.3%, OR 1.055 (95%CI: 0.632 to 1.759), p = .839). CONCLUSION Supplementation with ecabet sodium during H. pylori eradication therapy improves the eradication rate. The use of ecabet sodium does not increase the side effects based on our meta-analysis.
Collapse
Affiliation(s)
- Youhua Wang
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Efficacy of gastro-retentive forms of ecabet sodium in the treatment of gastric ulcer in rats. Arch Pharm Res 2013; 37:1053-62. [PMID: 24254934 DOI: 10.1007/s12272-013-0278-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Accepted: 10/22/2013] [Indexed: 12/28/2022]
Abstract
The purpose of the present study is to investigate the influence of gastric retention of ecabet sodium (ECS) on its mucoprotective effect in rat ulcer models. Mini-tablets containing 9 mg ECS were prepared using the direct compression method. The release rates of ECS mini-tablets were controlled by the amount and viscosity grade of hydroxypropylmethyl cellulose incorporated. Gastric retention of ECS mini-tablets after oral administration to rats was visually confirmed using a fluorescence imaging system. Because ECS mini-tablets exhibited size-dependent gastric retention, their gastric retention time was prolonged as the release rate decreased. In the in vivo efficacy study, gastro-retentive dosage forms of ECS did not influence the mucoprotective effect in the immediate irritation model but enhanced the effect in the delayed irritation model compared with ECS suspension. This finding indicates that the duration of the mucoprotective effect of ECS can be extended by the employment of gastro-retentive dosage formulations and provides a rationale for development of ECS gastro-retentive dosage forms.
Collapse
|
16
|
Basoglu S, Demirbas A, Ulker S, Alpay-Karaoglu S, Demirbas N. Design, synthesis and biological activities of some 7-aminocephalosporanic acid derivatives. Eur J Med Chem 2013; 69:622-31. [DOI: 10.1016/j.ejmech.2013.07.040] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 07/23/2013] [Accepted: 07/25/2013] [Indexed: 10/26/2022]
|
17
|
Loes AN, Ruyle L, Arvizu M, Gresko KE, Wilson AL, Deutch CE. Inhibition of urease activity in the urinary tract pathogen Staphylococcus saprophyticus. Lett Appl Microbiol 2013; 58:31-41. [PMID: 24001038 DOI: 10.1111/lam.12153] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2013] [Revised: 08/26/2013] [Accepted: 08/26/2013] [Indexed: 12/24/2022]
Abstract
UNLABELLED Urease is a virulence factor for the Gram-positive urinary tract pathogen Staphylococcus saprophyticus. The susceptibility of this enzyme to chemical inhibition was determined using soluble extracts of Staph. saprophyticus strain ATCC 15305. Acetohydroxamic acid (Ki = 8.2 μg ml(-1) = 0.106 mmol l(-1) ) and DL-phenylalanine hydroxamic acid (Ki = 21 μg ml(-1) = 0.116 mmol l(-1) ) inhibited urease activity competitively. The phosphorodiamidate fluorofamide also caused competitive inhibition (Ki = 0.12 μg ml(-1) = 0.553 μmol l(-1) = 0.000553 mmol l(-1) ), but the imidazole omeprazole had no effect. Two flavonoids found in green tea extract [(+)-catechin hydrate (Ki = 357 μg ml(-1) = 1.23 mmol l(-1) ) and (-)-epigallocatechin gallate (Ki = 210 μg ml(-1) = 0.460 mmol l(-1) )] gave mixed inhibition. Acetohydroxamic acid, DL-phenylalanine hydroxamic acid, fluorofamide, (+)-catechin hydrate and (-)-epigallocatechin gallate also inhibited urease activity in whole cells of strains ATCC 15305, ATCC 35552 and ATCC 49907 grown in a rich medium or an artificial urine medium. Addition of acetohydroxamic acid or fluorofamide to cultures of Staph. saprophyticus in an artificial urine medium delayed the increase in pH that normally occurs during growth. These results suggest that urease inhibitors may be useful for treating urinary tract infections caused by Staph. saprophyticus. SIGNIFICANCE AND IMPACT OF THE STUDY The enzyme urease is a virulence factor for the Gram-positive urinary tract pathogen Staphylococcus saprophyticus. We have shown that urease activity in cell-free extracts and whole bacterial cells is susceptible to inhibition by hydroxamates, phosphorodiamidates and flavonoids, but not by imidazoles. Acetohydroxamic acid and fluorofamide in particular can temporarily delay the increase in pH that occurs when Staph. saprophyticus is grown in an artificial urine medium. These results suggest that urease inhibitors may be useful as chemotherapeutic agents for the treatment of urinary tract infections caused by this micro-organism.
Collapse
Affiliation(s)
- A N Loes
- School of Mathematical and Natural Sciences, Arizona State University at the West Campus, Phoenix, AZ, USA
| | | | | | | | | | | |
Collapse
|
18
|
Ceylan S, Bektas H, Bayrak H, Demirbas N, Alpay-Karaoglu S, Ülker S. Syntheses and Biological Activities of New Hybrid Molecules Containing Different Heterocyclic Moieties. Arch Pharm (Weinheim) 2013; 346:743-56. [DOI: 10.1002/ardp.201300161] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 07/23/2013] [Accepted: 07/26/2013] [Indexed: 11/09/2022]
Affiliation(s)
- Sule Ceylan
- Department of Forest Industrial Engineering; Artvin Çoruh University; Artvin Turkey
| | - Hakan Bektas
- Faculty of Arts and Sciences, Department of Chemistry; Giresun University; Giresun Turkey
| | - Hacer Bayrak
- Department of Chemistry; Karadeniz Technical University; Trabzon Turkey
| | - Neslihan Demirbas
- Department of Chemistry; Karadeniz Technical University; Trabzon Turkey
| | | | - Serdar Ülker
- Department of Biology; Recep Tayyib Erdogan University; Rize Turkey
| |
Collapse
|
19
|
Ardekani LS, Gargari SLM, Rasooli I, Bazl MR, Mohammadi M, Ebrahimizadeh W, Bakherad H, Zare H. A novel nanobody against urease activity of Helicobacter pylori. Int J Infect Dis 2013; 17:e723-8. [PMID: 23561799 DOI: 10.1016/j.ijid.2013.02.015] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Revised: 12/03/2012] [Accepted: 02/16/2013] [Indexed: 01/01/2023] Open
|
20
|
Bektaş H, Ceylan Ş, Demirbaş N, Alpay-Karaoğlu Ş, Sökmen BB. Antimicrobial and antiurease activities of newly synthesized morpholine derivatives containing an azole nucleus. Med Chem Res 2013; 22:3629-3639. [PMID: 23807823 PMCID: PMC3685705 DOI: 10.1007/s00044-012-0318-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2012] [Accepted: 10/25/2012] [Indexed: 11/27/2022]
Abstract
2-[6-(Morpholin-4-yl)pyridin-3-ylamino]acetohydrazide (4) was obtained starting from 6-morpholin-4-ylpyridin-3-amine (2) via the formation of ester (3) and then converted to the corresponding Schiff bases (5, 6) with the reaction with aromatic aldehydes. The carbothioamide (9), obtained from the reaction of hydrazide with phenylisothiocyanate, was converted to the corresponding 1,2,4-triazole (11) and 1,3,4-thiadiazole (12) derivatives by the treatment with NaOH or H2SO4, respectively. The cyclocondenzation of 9 with 4-chlorophenacyl bromide or ethyl bromoacetate produced the corresponding 1,3-thiazole (10) or 1,3-thiazolidine derivatives (13), respectively. Antimicrobial and antiurease activities of newly synthesized compounds were investigated. Some of them were found to be active on M. smegmatis, and they displayed activity toward C. albicans and S. cerevisiae in high concentration. Compound 10 proved to be the most potent showing an enzyme inhibition activity with an IC50 = 2.37 ± 0.19 μM.
Collapse
Affiliation(s)
- Hakan Bektaş
- Department of Chemistry, Faculty of Arts and Sciences, Giresun University, 28049 Giresun, Turkey
| | - Şule Ceylan
- Department of Forest Industry Engineering, Faculty of Forest, Artvin Coruh University, 08100 Artvin, Turkey
| | - Neslihan Demirbaş
- Department of Chemistry, Faculty of Sciences, Karadeniz Technical University, 61080 Trabzon, Turkey
| | - Şengül Alpay-Karaoğlu
- Department of Biology, Faculty of Arts and Sciences, Rize University, 53100 Rize, Turkey
| | - Bahar Bilgin Sökmen
- Department of Chemistry, Faculty of Arts and Sciences, Giresun University, 28049 Giresun, Turkey
| |
Collapse
|
21
|
Mentese MY, Bayrak H, Uygun Y, Mermer A, Ulker S, Karaoglu SA, Demirbas N. Microwave assisted synthesis of some hybrid molecules derived from norfloxacin and investigation of their biological activities. Eur J Med Chem 2013; 67:230-42. [PMID: 23871903 DOI: 10.1016/j.ejmech.2013.06.045] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Revised: 06/19/2013] [Accepted: 06/23/2013] [Indexed: 11/25/2022]
Abstract
Norfloxacin was converted to 7-(4-amino-2-fluorophenyl)piperazin derivative (2) via the formation of nitro compound. The synthesis of the norfloxacin derivatives containing 1,3-thiazole or 1,3-thiazolidin moiety was performed from the reaction of 4-chlorophenacylbromide or ethyl bromoacetate with compounds 4-7 obtained starting from 2. 3-Fluoro-4-[4-(2-methoxyphenyl)piperazin-1-yl]aniline (14), 5-{[4-(2-methoxyphenyl)piperazin-1-yl]methyl}-4-phenyl-4H-1,2,4-triazole-3-thiol (18) and {[4-(2-methoxy phenyl)piperazin-1-yl]methyl}-1,3,4-oxadiazol-2-thiol (19) were obtained starting from 1-(2-methoxyphenyl)piperazine by several steps. The treatment of hydrazide (16) with several aldehydes afforded N'-[(2-hydroxyphenyl)methylen]- (20), N'-[(3-hydroxy-4-methoxy phenyl)methylen]- (21) or N'-[1H-indol-3-ylmethylene]-2-[4-(2-methoxyphenyl)piperazin-1-yl]acetohydrazide (22). Then, compounds 14, 18, 19 and 22 were condensed with 7-[4-(chloroacetyl)piperazin-1-yl]-1-ethyl-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (3) that was obtained from norfloxacine. All newly synthesized compounds were screened for their antimicrobial activities and some of them exhibited excellent activity. Moreover, one compound was found to have antiurease activity.
Collapse
|
22
|
Okuda M, Yamamoto N, Fukuda N, Maekawa K, Kusaka T, Hashimoto M, Kotake J, Koizuka H, Fukuda Y. Effect of ecabet sodium treatment on urea breath test and stool antigen tests in volunteers with Helicobacter pylori infection. J Gastroenterol Hepatol 2012; 27 Suppl 3:100-2. [PMID: 22486880 DOI: 10.1111/j.1440-1746.2012.07080.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
BACKGROUND AND AIM Ecabet sodium is reported to have a bactericidal effect on Helicobacter pylori and inhibit urease activity in vitro. METHODS Seven male volunteers (mean age, 51.3 years; range, 45-55 years) with H. pylori infection were medicated with 1 g ecabet sodium t.i.d. for 4 weeks. The urea breath test (UBT) was performed 10 times per person: before medication, seven times in 2 weeks, and once in the third and fourth weeks. Stool antigen tests (HpSA PLUS and Testmate pylori antigen) were performed five times per person: before medication and weekly during medication. RESULTS The premedication UBT value ranged from 4.9 ‰ to 77.4 ‰ and from 2.9 ‰ to 44 ‰ at the end of the treatment period. Not one of the subjects had a negative UBT result during medication. The optical densities of the HpSA and Testmate pylori antigen tests ranged from 0.4 to > 3.0 premedication and from 0.0 to > 3.0 at the end of treatment. HpSA and Testmate pylori antigen were negative in two cases. CONCLUSIONS In this study, ecabet sodium did not effect the results of UBT in volunteers with H. pylori infection. Ecabet sodium may influence stool antigens because in two of seven cases the H. pylori stool antigen tests returned negative results.
Collapse
Affiliation(s)
- Masumi Okuda
- Department of General Medicine and Community Health Science, Sasayama Medical Center, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan.
| | | | | | | | | | | | | | | | | |
Collapse
|
23
|
Furuta T, Kato M, Sugimoto M, Sasaki M, Kamoshida T, Furukawa K, Inaba T, Tomita T, Shirai T, Ishii N, Nomura H, Konda Y, Asaka M. Triple therapy with ecabet sodium, amoxicillin and lansoprazole for 2 weeks as the rescue regimen for H. pylori infection. Intern Med 2011; 50:369-74. [PMID: 21372444 DOI: 10.2169/internalmedicine.50.4305] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND/AIM Ecabet sodium has an anti-H. pylori effect. We assessed the efficacy of ecabet sodium in the rescue therapy for the eradication of H. pylori. METHODS A total of 74 patients with failed eradication of H. pylori after triple therapy with lansoprazole 30 mg bid, amoxicillin 750 mg bid and clarithromycin 200 mg bid were enrolled. They were randomly assigned to the three treatment groups as follows: LAC, lansoprazole 30 mg + amoxicillin 750 mg + clarithromycin 200 mg bid for 1 week; LAC2E, lansoprazole 30 mg bid + amoxicillin 750 mg bid + clarithromycin 200 mg bid + ecabet sodium 2 g bid for 1 week; and LA2E, lansoprazole 30 mg bid + amoxicillin 750 mg bid + ecabet sodium 2 g bid for 2 weeks. Eradication of H. pylori was assessed by the 13C-urea breath test after treatment. RESULTS Eradication rates in intention-to-treat and per-protocol analyses were 20.0% (95% CI: 6.8-40.7) and 20.0% (6.8-40.7) with LAC, respectively, and 16.0% (4.5-36.1) and 17.4% (5.0-38.8) with LAC2E. In contrast, respective rates with LA2E were 75% (53.3-90.2) and 85.7% (63.7-97.0), which were significantly higher than those with LAC (p<0.001 for both ITT and PP) and LAC2E (p<0.001 for both ITT and PP). CONCLUSION Triple therapy with ecabet sodium, lansoprazole and amoxicillin for 2 weeks was effective as the rescue therapy after failure of the standard clarithromycin-based regimen.
Collapse
Affiliation(s)
- Takahisa Furuta
- Center for Clinical Research, Hamamatsu University School of Medicine, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
24
|
|
25
|
|
26
|
Abstract
AIM: To investigate the effect of celecoxib, a selective COX-2 inhibitor, on Helicobacter pylori (H. pylori) colonization-related factors and its mechanism.
METHODS: After co-incubation with celecoxib, morphology of H. pylori strain 26695 was observed under a transmission electron microscope. Flagella motility was assessed by stab agar motility test. Adherence of H. pylori to AGS cells was determined by enzyme linked immunosorbent assay. Levels of mRNA expression in flagellar genes (flaA, flaB), urease genes (ureA, ureB) and adhesin genes (babA, sabA, alpA, alpB, hpaA, hopZ) were measured by real-time polymerase chain reaction.
RESULTS: Separation and non-integrity of bacterial cell wall, rarefaction and asymmetry of cytoplasm, and even lysis of H. pylori were observed in the presence of celecoxib. When H. pylori strains were incubated in the presence of celecoxib, their flagellar motility and adherence to AGS cells were inhibited. The expression of ureA, ureB, babA, sabA, alpA, alpB, hpaA, hopZ was up-regulated while the expression of flaA, flaB was down-regulated in the presence of celecoxib.
CONCLUSION: Celecoxib inhibits flagellar motility and adherence of H. pylori to AGS cells, and destructs their normal structure in vitro.
Collapse
|
27
|
Wang J, Wang WH, Li J, Liu FX. Effects of aspirin on Helicobacter pylori colonization. Shijie Huaren Xiaohua Zazhi 2009; 17:854-861. [DOI: 10.11569/wcjd.v17.i9.854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate effects of aspirin on H pylori colonization and the related mechanism.
METHODS: After co-incubation with aspirin, the morphology of H pylori was observed by transmission electron microscopy. The flagellar motility was assessed by 0.3% stab agar motility test. The adherence to AGS cells was determined using enzyme linked immunosorbent assay (ELISA). The mRNA expression levels of flagellar genes (flaA, flaB), urease genes (ureA, ureB) and adhesin genes (babA, sabA, alpA, alpB, hpaA, hopZ) were determined using SYBR green I real-time PCR.
RESULTS: Separation and non-integrity of cell wall, rarefaction and asymmetry of cytoplasm, and even lysis of the bacteria were the morphological effects of aspirin on H pylori. When incubated H pylori in the presence of aspirin, the ability of flagellar motility and adherence to AGS cells were inhibited. The expression of ureA, ureB, babA, sabA, alpA, alpB, hpaA, hopZ were up-regulated in the presence of aspirin, while the expression of flaA, flaB were down-regulated.
CONCLUSION: Aspirin decreases the colonization of H pylori by inhibiting flagellar motility, adherence ability and destructing normal structure of the bacteria.
Collapse
|
28
|
Wu Y, Yang J, Ding L, Xu G, Qian W, Yun C, He J. Identification of the metabolites of ecabet bismuth in rat bile by liquid chromatography-electrospray ionization-tandem mass spectrometry. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2009; 15:531-539. [PMID: 19661561 DOI: 10.1255/ejms.1006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In the present study, a liquid chromatography-electrospray ionization-tandem mass spectrometry (LC-ESI- MS/MS) method was developed for the screening and the structural elucidation of the metabolites of ecabet bismuth in rat bile. Solid-phase extraction cartridges were used for sample pre-treatment and a gradient liquid chromatographic system composed of 10 mM ammonium acetate buffer and methanol was used for chromatographic separation on a Phenomenex Kromasil C(18) column. The triple quadrupole mass spectrometer was employed to thoroughly detect and acquire the detailed MS/MS spectra of ecabet and its metabolites. By comparing the chromatographic retention behaviors, as well as the changes in molecular weight and full-scan MS/MS spectra of the potential metabolites with those of the parent compound, two main metabolites were identified as glucuronide conjugate of carbonylated ecabet (7-oxo-ecabet) and glucuronide conjugate of ecabet. Both two metabolites have not been reported in the literatures. The metabolic pathways of ecabet in rat were also proposed in this paper.
Collapse
Affiliation(s)
- Yue Wu
- Department of Pharmaceutical Analysis, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, China
| | | | | | | | | | | | | |
Collapse
|
29
|
Zhang D, Du X, Liu M, Li H, Jiang Y, Zhao L, Gu J. Determination of ecabet in human plasma by high-performance liquid chromatography–tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2008; 863:223-8. [PMID: 18258501 DOI: 10.1016/j.jchromb.2008.01.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2007] [Revised: 12/29/2007] [Accepted: 01/04/2008] [Indexed: 12/20/2022]
|
30
|
Kim HW, Kim GH, Cheong JY, Yang US, Park SK, Song CS, Kang DH, Song GA. H pylori eradication: A randomized prospective study of triple therapy with or without ecabet sodium. World J Gastroenterol 2008; 14:908-12. [PMID: 18240348 PMCID: PMC2687058 DOI: 10.3748/wjg.14.908] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate whether adding ecabet sodium to the standard triple therapy for H pylori infection improve eradication rate.
METHODS: Two hundred and fifty-seven H pylori-infected patients were randomly assigned to standard triple therapy (group A, n = 129) or triple therapy plus ecabet sodium (group B, n = 128). Successful eradication was defined as a negative 13C-urea breath test 6-8 wk after completion of treatment.
RESULTS: After completion of therapy, 194/257 patients showed negative 13C-urea breath test results. According to intention-to-treat analysis, the infection was eradicated in 93/129 (72.1%) patients in group A and 101/128 (78.9%) in group B (P = 0.204). Per-protocol analysis showed successful eradication in 93/118 (78.8%) patients from group A and 101/114 (88.6%) from group B (P = 0.044). There were no significant differences in the side effects experienced by the patients in the two treatment groups.
CONCLUSION: Our results suggest that the addition of ecabet sodium improves the efficacy of the standard triple therapy for H pylori.
Collapse
|
31
|
Kusumoto K, Kawahara T, Kuwano Y, Teshima-Kondo S, Morita K, Kishi K, Rokutan K. Ecabet sodium inhibits Helicobacter pylori lipopolysaccharide-induced activation of NADPH oxidase 1 or apoptosis of guinea pig gastric mucosal cells. Am J Physiol Gastrointest Liver Physiol 2005; 288:G300-7. [PMID: 15458921 DOI: 10.1152/ajpgi.00274.2004] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Helicobacter pylori LPS activates a homolog of gp91(phox), NADPH oxidase 1 (Nox1), in guinea pig gastric mucosal cells cultured in 10% FBS-containing medium. RT-PCR and Northern hybridization demonstrated that H. pylori LPS stimulated expression of Nox1 and a novel p47(phox) homolog (Noxo1) mRNAs with a peak at 4 h, followed by upregulation of superoxide anion (O2-) generation. Pretreatment with 10 mg/ml of a nonabsorbable antigastric ulcer drug, ecabet sodium (ecabet), completely blocked these two mRNA expressions and the upregulation of O2- production. Under low (0.1%)-FBS conditions, H. pylori LPS predominantly caused apoptosis of the cells. Ecabet completely blocked the LPS-triggered phosphorylation of transforming growth factor-beta-activated kinase 1 (TAK1) and TAK1-binding protein 1, activation of caspase 8, loss of mitochondrial membrane potential, release of cytochrome c, activation of caspase 3, and appearance of apoptotic cells. In contrast, ecabet had no effect on ethanol- or etoposide-initiated apoptosis. The ecabet-pretreated cells exhibited the responsiveness to H. pylori LPS, similarly as untreated control cells did, when ecabet was removed by washing before the addition of H. pylori LPS. Incubation of H. pylori LPS with ecabet eliminated the toxic effects of the LPS, and nondenatured polyacrylamide gel electrophoresis indicated the formation of higher molecular mass complexes between H. pylori LPS and ecabet, suggesting that ecabet may interact with H. pylori LPS and block the activation of Toll-like receptor 4 (TLR4). Our results suggest that ecabet may suppress TLR4-mediated inflammation or accelerated apoptosis caused H. pylori infection.
Collapse
Affiliation(s)
- Kenji Kusumoto
- Department of Nutritional Physiology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
| | | | | | | | | | | | | |
Collapse
|
32
|
Kim JM, Kim JS, Jung HC, Oh YK, Kim N, Song IS. Inhibition of Helicobacter pylori-induced nuclear factor-kappa B activation and interleukin-8 gene expression by ecabet sodium in gastric epithelial cells. Helicobacter 2003; 8:542-53. [PMID: 14536001 DOI: 10.1046/j.1523-5378.2003.00175.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Helicobacter pylori stimulates nuclear factor-kappa B (NF-kappa B) activation and chemokine interleukin-8 (IL-8) expression in gastric epithelial cells. Ecabet sodium (ecabet), a locally acting antiulcer drug, is known to have anti-H. pylori activity. However, there is little understanding of how ecabet induces anti-inflammatory activity in gastric epithelial cells infected with H. pylori. The aim of this study was to investigate the effects of ecabet on IL-8 gene expression and NF-kappa B activation in human gastric epithelial cells infected with H. pylori. MATERIALS AND METHODS After Hs746T, MKN-45, or SNU-5 gastric epithelial cell lines had been infected with cagA+cytotoxin+H. pylori in the presence of ecabet, IL-8 mRNA expression was assessed by quantitative reverse transcription-polymerase chain reaction, and IL-8 secretion was measured by enzyme-linked immunosorbent assay. NF-kappa B and inhibitory kappa B-alpha (I kappa B alpha) signals were assayed by electrophoretic mobility shift assay and Western blot, respectively. The activation of NF-kappa B and IL-8 reporter genes was determined by luciferase assay. RESULTS Ecabet showed no antimicrobial activiy against Gram-positive or -negative bacteria. However, ecabet inhibited transcription of the IL-8 gene and secretion of IL-8 by gastric epithelial cells infected with H. pylori at a concentration of 5 micro g/ml. Moreover, ecabet inhibited the activation of NF- kappa B and the degradation of I kappa B alpha in gastric epithelial cells in response to H. pylori infection. In addition, the NF-kappa B signal inhibited by ecabet was comprised predominantly of heterodimers of p65/p50. CONCLUSIONS Ecabet inhibited H. pylori-induced IL-8 gene transcription and secretion by suppressing the NF-kappa B signal. This inhibition might be one pathway by which ecabet exerts its anti-inflammatory effect on H. pylori-induced gastric inflammation.
Collapse
Affiliation(s)
- Jung Mogg Kim
- Department of Microbiology and Institute of Biomedical Science, Hanyang University College of Medicine, Seoul, Korea
| | | | | | | | | | | |
Collapse
|
33
|
Adachi K, Ishihara S, Hashimoto T, Hirakawa K, Ishimura N, Niigaki M, Kaji T, Kawamura A, Sato H, Fujishiro H, Hattori S, Watanabe M, Kinoshita Y. Efficacy of ecabet sodium for Helicobacter pylori eradication triple therapy in comparison with a lansoprazole-based regimen. Aliment Pharmacol Ther 2001; 15:1187-91. [PMID: 11472321 DOI: 10.1046/j.1365-2036.2001.01022.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Abstract
BACKGROUND The cytoprotective agent, ecabet sodium, inhibits urease activity and growth of Helicobacter pylori. AIM To evaluate the efficacy and safety of ecabet sodium-based eradication of H. pylori infection, compared with a lansoprazole-based regimen, in a randomized multicentre study. SUBJECTS AND METHODS A total of 120 H. pylori-positive patients were assigned to one of two treatment regimens for 2 weeks: ecabet sodium 1 g b.d., amoxicillin 500 mg t.d.s. and clarithromycin 400 mg b.d. (EAC: 60 patients); or lansoprazole 30 mg (o.m.) with the same antimicrobial agents (LAC: 60 patients). Cure of infection was assessed by a 13C-urea breath test 1 month after completion of treatment. RESULTS One patient in the EAC group and two in the LAC group did not complete therapy because of an adverse event, and three did not undergo the 13C-urea breath test. Cure rates for the intention-to-treat, all-patients-treated and per protocol analysis in the EAC group were 85%, 86% and 88%, respectively, whereas those in the LAC group were 85%, 88% and 91%. There were no significant differences in cure rate or adverse events between the two regimens. CONCLUSIONS Ecabet sodium in combination with amoxicillin and clarithromycin is as effective as lansoprazole-based eradication therapy for H. pylori.
Collapse
Affiliation(s)
- K Adachi
- Department of Internal Medicine II, Shimane Medical University, Izumo, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
34
|
Kagaya H, Kato M, Komatsu Y, Mizushima T, Sukegawa M, Nishikawa K, Hokari K, Takeda H, Sugiyama T, Asaka M. High-dose ecabet sodium improves the eradication rate of helicobacter pylori in dual therapy with lansoprazole and amoxicillin. Aliment Pharmacol Ther 2000; 14:1523-7. [PMID: 11069325 DOI: 10.1046/j.1365-2036.2000.00852.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
AIM The additive effect of ecabet sodium in combination with dual therapy on Helicobacter pylori eradication was evaluated. METHODS H. pylori-positive chronic gastritis patients were randomly assigned to one of the following three groups and medicated for 2 weeks. Group LA: dual therapy (lansoprazole 30 mg o.d. plus amoxicillin 750 mg b.d.). Group LA1E: dual therapy plus ecabet sodium (1 g b.d.). Group LA2E: dual therapy plus ecabet sodium (2 g b.d.). Patients were evaluated 4 weeks after the cessation of treatment by culture and 13C-urea breath test. RESULTS Seventy-one patients (mean age, 56.6 years; range, 26-79 years; 40 males, 31 females) were enrolled in this prospective, single-blind study, and 68 completed the protocol. The eradication rates per protocol patient were 43% in group LA, 62% in group LA1E, and 79% in group LA2E, and those on the intention-to-treat basis were 42% in group LA, 57% in group LA1E and 79% in group LA2E. The eradication rate in group LA2E was significantly higher than group LA (P=0.032 in per protocol, P=0.022 in intention-to-treat). Adverse effects were observed in 10 patients in this study. There were no severe adverse effects caused by ecabet sodium. CONCLUSION High-dose ecabet sodium increases eradication rates of H. pylori in dual therapy with lansoprazole and amoxicillin.
Collapse
Affiliation(s)
- H Kagaya
- Department of Gastroenterolgy and Hematology, Hokkaido University, Graduate School of Medicine, Sapporo, Japan.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Kinoshita M, Endo M, Yasoshima A, Saito N, Yamasaki K, Chishima S, Narita H. Ecabet sodium, a novel locally-acting anti-ulcer agent, protects the integrity of the gastric mucosal gel layer from pepsin-induced disruption in the rat. Aliment Pharmacol Ther 1999; 13:687-94. [PMID: 10233194 DOI: 10.1046/j.1365-2036.1999.00502.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Abstract
BACKGROUND Ecabet sodium, a novel non-systemic anti-ulcer agent, possesses high affinity to gastric adherent mucus, which plays an important role in the protection of the gastric epithelium against acid and pepsin. AIM To assess the effect of ecabet on pepsin-induced degradation of the structure of the mucus gel layer. METHODS Everted sacs of rat stomach were incubated in HCl solution containing pepsin with or without ecabet. Pepsin-induced release of the cleaved peptides and hexosamine from the sacs was determined. Changes in the molecular size of glycoproteins in the adherent mucus (using gel filtration methods) and in the morphology of the epithelium (using both light and scanning electron microscopy) were also examined. RESULTS Ecabet reduced the pepsin-induced release of peptides and hexosamine, depending on its content in the adherent mucus. Pepsin treatment partially lowered the molecular weight of native glycoproteins in the adherent mucus, caused exfoliation of the epithelial cells, and degraded the network-like ultrastructure of the mucus layer, giving it a lumpy, globular appearance. Ecabet prevented both the pepsin-induced molecular size shift in mucus glycoproteins, and morphological alteration of the epithelium, including ultrastructural derangement of the mucus gel layer. CONCLUSION Ecabet protects the polymeric structure of mucus glycoproteins from proteolytic degradation by pepsin, and thus maintains integrity of the gastric mucus gel layer.
Collapse
Affiliation(s)
- M Kinoshita
- Discovery Research Laboratory, Tanabe Seiyaku Co. Ltd, Saitama Japan.
| | | | | | | | | | | | | |
Collapse
|