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Iguchi M, Kakimoto K, Kuramoto T, Nakazawa K, Kubota M, Hirata Y, Fujiwara K, Harada S, Sakanaka T, Ota K, Edogawa S, Kojima Y, Nouda S, Okada T, Kawakami K, Takeuchi T, Inoue T, Higuchi K. Effect of egualen sodium hydrate on small-intestinal mucosal damage induced by low-dose aspirin: a prospective randomized clinical trial. J Clin Biochem Nutr 2018; 62:174-178. [PMID: 29610558 PMCID: PMC5874231 DOI: 10.3164/jcbn.17-46] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 08/15/2017] [Indexed: 12/12/2022] Open
Abstract
Low-dose aspirin, which is widely used to reduce the risk of cardio- and cerebrovascular thrombosis, often induces gastroenteropathy by increasing the permeability of the mucosa. However, therapeutic strategies for patients with low-dose aspirin-induced small intestinal injury have not been determined. We evaluated the preventative effect of egualen sodium hydrate, a gastro-protective agent that suppresses indomethacin-induced small-intestinal damage in rats, against small-intestinal mucosal damage induced by low-dose aspirin in healthy adult male volunteers. Participants were randomly allocated to receive aspirin 100 mg/kg daily (control group, n = 10) or aspirin 100 mg/kg plus egualen sodium 30 mg daily (egualen sodium group, n = 10). Small intestinal mucosal injury was evaluated by capsule endoscopy two weeks after initiation of drug administration. Fecal analyses (occult blood test, immunochemical test, transferrin measurement and calprotectin measurement) were carried out before and after treatment. Egualen sodium significantly suppressed the total number of small intestinal injuries detected by capsule endoscopy and the positive ratio for the fecal occult blood test. Daily use of 30 mg of egualen sodium showed a preventative effect on low-dose aspirin-induced small intestinal injury. Since acid suppression therapy was reported to exacerbate NSAIDs-induced enteropathy via dysbiosis, egualen sodium may be useful for patients treated with low-dose aspirin.
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Affiliation(s)
- Munetaka Iguchi
- Second Department of Internal Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan
| | - Kazuki Kakimoto
- Second Department of Internal Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan
| | - Takanori Kuramoto
- Second Department of Internal Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan
| | - Kei Nakazawa
- Second Department of Internal Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan
| | - Minori Kubota
- Second Department of Internal Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan
| | - Yuki Hirata
- Second Department of Internal Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan
| | - Kaori Fujiwara
- Second Department of Internal Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan
| | - Satoshi Harada
- Second Department of Internal Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan
| | - Taisuke Sakanaka
- Second Department of Internal Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan
| | - Kazuhiro Ota
- Second Department of Internal Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan
| | - Shoko Edogawa
- Second Department of Internal Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan
| | - Yuichi Kojima
- Second Department of Internal Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan
| | - Sadaharu Nouda
- Second Department of Internal Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan
| | - Toshihiko Okada
- Second Department of Internal Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan
| | - Ken Kawakami
- Second Department of Internal Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan
| | - Toshihisa Takeuchi
- Second Department of Internal Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan
| | - Takuya Inoue
- Second Department of Internal Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan
| | - Kazuhide Higuchi
- Second Department of Internal Medicine, Osaka Medical College, 2-7 Daigakumachi, Takatsuki, Osaka 569-8686, Japan
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Cao T, Li Y, Yang Z, Yuan M, Li Y, Yang H, Feng Y, Yin S. Synthesis and Biological Evaluation of 3, 8-dimethyl-5-isopropylazulene Derivatives as Anti-gastric Ulcer Agent. Chem Biol Drug Des 2016; 88:264-71. [DOI: 10.1111/cbdd.12753] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 01/02/2016] [Accepted: 02/17/2016] [Indexed: 01/02/2023]
Affiliation(s)
- Tingting Cao
- College of Chemistry; Sichuan University; 29 Wangjiang Road Chengdu 610064 Sichuan Province China
| | - Yong Li
- College of Chemistry; Sichuan University; 29 Wangjiang Road Chengdu 610064 Sichuan Province China
| | - Ziyao Yang
- College of Chemistry & Environment Protection Engineering; Southwest University for Nationalities; Section 4, Southern First Ring Road Chengdu 610041 Sichuan Province China
| | - Mingxing Yuan
- College of Chemistry; Sichuan University; 29 Wangjiang Road Chengdu 610064 Sichuan Province China
| | - Ying Li
- College of Chemistry; Sichuan University; 29 Wangjiang Road Chengdu 610064 Sichuan Province China
| | - Hongjun Yang
- College of Chemistry & Environment Protection Engineering; Southwest University for Nationalities; Section 4, Southern First Ring Road Chengdu 610041 Sichuan Province China
| | - Yuchuan Feng
- College of Chemistry & Environment Protection Engineering; Southwest University for Nationalities; Section 4, Southern First Ring Road Chengdu 610041 Sichuan Province China
| | - Shufan Yin
- College of Chemistry; Sichuan University; 29 Wangjiang Road Chengdu 610064 Sichuan Province China
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Gunes T, Akin MA, Sarici D, Hallac K, Kurtoglu S, Hashimoto T. Guaiazulene: a new treatment option for recalcitrant diaper dermatitis in NICU patients. J Matern Fetal Neonatal Med 2012; 26:197-200. [PMID: 22928495 DOI: 10.3109/14767058.2012.722711] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AIM Based on a maternal observation, we aimed to evaluate the treatment effectiveness of guaiazulene (GA) containing local pomade in the high-risk neonates with recalcitrant diaper dermatitis (RDD). METHODS We included 30 NICU patients of RDD, with level II-III aged between 22 and 67 days. Study group patients (n = 20) were treated with GA containing local pomade (0.05 g/100 g). Control group consisted of patients who had extended antifungal treatment. A visual scale was used to assess the response to treatment at the end of a week. Scoring was done at the beginning of the treatment, on the first, third and seventh days. RESULTS Statistically significant differences in visual scores were determined between the two groups at the initial and following days of the treatment. In study group, improvements at the first and third days of the treatment were better than those of control group. Additionally, complete recovery rate in study group was better than that in controls. CONCLUSION Having beneficial but no adverse effects, GA containing local pomade provided rapid recovery in risky neonates with RDD, who required rapid improvement.
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Affiliation(s)
- Tamer Gunes
- Faculty of Medicine, Department of Pediatrics, Division of Neonatology, Erciyes University, Kayseri, Turkey
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Crombie AL, Kane JL, Shea KM, Danheiser RL. Ring expansion-annulation strategy for the synthesis of substituted azulenes and oligoazulenes. 2. Synthesis of azulenyl halides, sulfonates, and azulenylmetal compounds and their application in transition-metal-mediated coupling reactions. J Org Chem 2005; 69:8652-67. [PMID: 15575741 DOI: 10.1021/jo048698c] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A "ring expansion-annulation strategy" for the synthesis of substituted azulenes is described based on the reaction of beta'-bromo-alpha-diazo ketones with rhodium carboxylates. The key transformation involves an intramolecular Buchner reaction followed by beta-elimination of bromide, tautomerization, and in situ trapping of the resulting 1-hydroxyazulene as a carboxylate or triflate ester. Further synthetic elaboration of the azulenyl halide and sulfonate annulation products can be achieved by employing Heck, Negishi, Stille, and Suzuki coupling reactions. Reaction of the azulenyl triflate 84 with pinacolborane provides access to the azulenylboronate 91, which participates in Suzuki coupling reactions with alkenyl and aryl iodides. The application of these coupling reactions to the synthesis of biazulenes, terazulene 101, and related oligoazulenes is described, as well as the preparation of the azulenyl amino acid derivative 110.
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Affiliation(s)
- Aimee L Crombie
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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Kane JL, Shea KM, Crombie AL, Danheiser RL. A ring expansion-annulation strategy for the synthesis of substituted azulenes. Preparation and Suzuki coupling reactions of 1-azulenyl triflates. Org Lett 2001; 3:1081-4. [PMID: 11277800 DOI: 10.1021/ol0156897] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[structure: see text]. A new strategy for the synthesis of substituted azulenes is reported, based on the reaction of beta'-bromo-alpha-diazo ketones with rhodium carboxylates. The key transformation involves intramolecular addition of a rhodium carbenoid to an arene pi-bond, electrocyclic ring opening, beta-elimination, tautomerization, and trapping to produce 1-hydroxyazulene derivatives. The synthetic utility of the method is enhanced by the ability of the triflate derivatives to participate in Suzuki coupling reactions, as illustrated in a synthesis of the antiulcer drug egualen sodium (KT1-32).
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Affiliation(s)
- J L Kane
- Department of Chemistry, Massachusetts Institute of Technology Cambridge, Massachusetts 02139, USA
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