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Emami B, Shakeri F, Gholamnezhad Z, Saadat S, Boskabady M, Azmounfar V, Sadatfaraji H, Boskabady MH. Calcium and potassium channels are involved in curcumin relaxant effect on tracheal smooth muscles. Pharm Biol 2020; 58:257-264. [PMID: 32208946 PMCID: PMC7170316 DOI: 10.1080/13880209.2020.1723647] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Context: Curcumin, the active component of Curcuma longa L. (Zingiberaceae), exhibits a wide variety of biological activities including vasodilation and anti-inflammation.Objective: The relaxant effect of curcumin in tracheal smooth muscle (TSM) was not examined so far, thus, this study was designed to assess the relaxant effect of curcumin on rat TSM and examine the underlying mechanism(s) responsible for this effect.Materials and methods: TSM was contracted by KCl (60 mM) or methacholine (10 μM), and cumulative concentrations of curcumin (12.5, 25, 50, and 100 mg/mL) or theophylline (0.2, 0.4, 0.6, and 0.8 mM, as positive control) were added to organ bath. The relaxant effect of curcumin was examined in non-incubated or incubated tissues with atropine (1 μM), chlorpheniramine (1 μM), indomethacin (1 μM), and papaverine (100 μM).Results: In non-incubated TSM, curcumin showed significant relaxant effects on KCl-induced contraction in a concentration-dependent manner (p < 0.001 for all concentrations). The relaxant effects of curcumin 12.5, 25, and 50 mg/mL were significantly lower in atropine-incubated tissue compared to non-incubated TSM (p < 0.05 to p < 0.001). A significant difference was observed in EC50 between atropine-incubated (48.10 ± 2.55) and non-incubated (41.65 ± 1.81) tissues (p < 0.05). Theophylline showed a significant relaxant effect on both KCl and methacholine-induced contraction in a concentration-dependent manner (p < 0.001 for all cases).Conclusions: The results indicated a relatively potent relaxant effect of curcumin on TSM, which was less marked than the effect of theophylline. Calcium channel blocking and/or potassium channel opening properties of curcumin may be responsible for TSM relaxation.
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Affiliation(s)
- Bahman Emami
- Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Farzaneh Shakeri
- Natural Products and Medicinal Plants Research Center, North Khorasan University of Medical Sciences, Bojnurd, Iran
| | - Zahra Gholamnezhad
- Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Saeideh Saadat
- Department of Physiology, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Marzie Boskabady
- Dental Materials Research Center and Department of Pediatric Dentistry, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Vahab Azmounfar
- Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hamed Sadatfaraji
- Department of Pharmacognosy, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Hossein Boskabady
- Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- CONTACT Mohammad Hossein Boskabady Neurogenic Inflammation Research Center and Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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Bagheri R, Boonstani R, Sadrizadeh A, Salehi M, Afghani R, Rahnama A, Azmounfar V, Hakimian S, Firoozabadi MB. Thymectomy for Nonthymomatous Myasthenia Gravis. Innovations 2018. [DOI: 10.1177/155698451801300201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Reza Bagheri
- Lung Disease Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Reza Boonstani
- Division of Neurosurgery, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ali Sadrizadeh
- Lung Disease Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Maryam Salehi
- Division of Community Medicine, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Reza Afghani
- Department of General Surgery, 5th of Azar Hospital, Faculty of Medicine, Golestan University of Medical Sciences, Gorgan, Iran
| | - Ali Rahnama
- Department of General Surgery, Mashhad University of Medical Science, Mashhad, Iran
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Bagheri R, Haghi SZ, Afghani R, Azmounfar V, Hakimian S, Baradaran Firoozabadi M, Morovatdar N, Lotfian E. Effect of Diaphragm Plication in Thymoma Patients with and without Myasthenia Gravis. Tanaffos 2018; 17:177-182. [PMID: 30915134 PMCID: PMC6428380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
BACKGROUND Thymoma is the most common tumor of the anterior mediastinum that has the most effective treatment, as it can be completely resected. In patients with advanced stage, phrenic nerve involvement can be seen and suggested treatment for these patients is unilateral phrenic excision and diaphragm plication. However in patients with myasthenia gravis, there are concerns in relation to this method of treatment. The aim of this study is to evaluate the effects of plication of the diaphragm on complications of phrenic nerve excision in thymoma patients with and without myasthenia gravis involving the phrenic nerve. MATERIALS AND METHODS A retrospective cohort study was performed on 26 patients with thymoma; half of the patients had myasthenia gravis and the other half did not have myasthenia gravis. We performed diaphragm plication in 7 patients in each group with excision of phrenic nerve. Patients were evaluated based on preoperative and postoperative variables. RESULTS The patients' age (P=0.943), sex (P=0.999), blood loss during surgery (P=0.919), need for transfusion during surgery (P=0.999), short term complications (P=0.186), need for tracheostomy (P=0.27) and mortality (P=0.09) differences were not significant. However, the average duration of ICU stay (P=0.001) and intubation in ICU (P=0.001) in patients who had myasthenia gravis was more than patients without myasthenia gravis. These values were less in patients with myasthenia gravis and diaphragm plication than patients with myasthenia gravis and no diaphragm plication. CONCLUSION Excision of the phrenic nerve in patients with myasthenia gravis associated with thymoma and phrenic nerve involvement is appropriate.
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Affiliation(s)
- Reza Bagheri
- Lung Disease Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed Ziaollah Haghi
- Lung Disease Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Reza Afghani
- Department of General Surgery, 5th of Azar Hospital, Faculty of Medicine, Golestan University of Medical Sciences, Gorgan, Iran
| | - Vahab Azmounfar
- Student Research Committee, Mashhad University of Medical science, Mashhad, Iran,Correspondence to: Azmounfar V, Address: Student Research Committee, Mashhad University of Medical science, Mashhad, Iran, Email address:
| | | | | | - Negar Morovatdar
- Imam Reza Clinical Research Unit, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Elham Lotfian
- Lung Disease Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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