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J Herbmed Pharmacol. 2021;10(1): 109-115.
doi: 10.34172/jhp.2021.11

Scopus ID: 85101421023
  Abstract View: 3407
  PDF Download: 1430

Original Article

Spasmolytic effect of Acmella oleracea flowers extract on isolated rat ileum

Acharaporn Duangjai 1* ORCID logo, Wichuda Phiphitphibunsuk 2 ORCID logo, Niphaphon Klomkiao 2 ORCID logo, Plangkul Rodjanaudomwuttikul 2 ORCID logo, Praewanit Ruangpoom 2 ORCID logo, Sudarat Autthakitmongkol 2 ORCID logo, Acharaporn Ontawong 1 ORCID logo, Nattakorn Kamkaew 1 ORCID logo, Maleeruk Utsinthong 2, 3 ORCID logo, Surasak SaoKaew 2, 3, 4, 5, 6, 7, 8 ORCID logo

1 Unit of Excellence in Research and Product Development of Coffee, Division of Physiology, School of Medical Sciences, University of Phayao, Phayao, Thailand
2 School of Pharmaceutical Sciences, University of Phayao, Phayao, Thailand
3 Center of Health Outcomes Research and Therapeutic Safety (Cohorts), School of Pharmaceutical Sciences, University of Phayao, Phayao, Thailand
4 Unit of Excellence on Herbal Medicine, School of Pharmaceutical Sciences, University of Phayao, Phayao, Thailand
5 Unit of Excellence on Clinical Outcomes Research and IntegratioN (UNICORN), School of Pharmaceutical Sciences, University of Phayao, Phayao, Thailand
6 Division of Pharmacy Practice, Department of Pharmaceutical Care, School of Pharmaceutical Sciences, University of Phayao, Phayao, Thailand
7 Biofunctional Molecule Exploratory Research Group, Biomedicine Research Advancement Centre, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Selangor Darul Ehsan, Malaysia
8 Novel Bacteria and Drug Discovery Research Group, Microbiome and Bioresource Research Strength, Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway, Selangor Darul Ehsan, Malaysia
*Corresponding Author: Email: achara.phso@gmail.com

Abstract

Introduction: Acmella oleracea has been used as a traditional medicine for the treatment of asthma, sore throat, haemorrhoids and toothache. However, whether A. oleracea has gastrointestinal functions, such as regulation of intestinal contractions, has not been fully elucidated. Therefore, the aim of the present study was to investigate the effect of A. oleracea flowers extract (AFE) on rat ileum contractions and the possible mechanism(s) of its action.

Methods: The extract was prepared using the Soxhlet apparatus with 95% ethanol. Ileum was removed from male Wistar rats and mounted in an organ bath containing Krebs solution. The tissue contractions were recorded by an isotonic transducer under 1 g tension.

Results: The cumulative concentrations of the AFE (0.01–1 mg/mL) reduced the ileum contractions induced by KCl (80 mM) (n = 6, P < 0.05). AFE (1 mg/mL) attenuated the contractions induced by cumulative concentrations of CaCl2 (1–20 mM), while the spasmolytic effects of the extract were not reduced after tissue incubation with N (ω)-nitro-L-arginine methyl ester (L-NAME) (100 μM, 20 minutes).

Conclusion: These results suggest that AFE inhibits ileum contractions without involving the nitric oxide pathway, which is possibly mediated via blockade of voltage-dependent calcium channels. A. oleracea may be useful in gastrointestinal disorders such as diarrhoea.


Acmella oleracea flowers extract exhibited spasmolytic activity by inhibiting Ca2+ influx, which may have implications for antispasmodic action in gastrointestinal disorders.
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Submitted: 18 Feb 2020
Revision: 28 Mar 2020
Accepted: 01 Apr 2020
ePublished: 20 Oct 2020
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