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Abstract Title:

Origanum majorana L. extract exhibit positive cooperative effects on the main mechanisms involved in acute infectious diarrhea.

Abstract Source:

J Ethnopharmacol. 2019 Jul 15 ;239:111503. Epub 2018 Sep 11. PMID: 30217790

Abstract Author(s):

Hanane Makrane, Mohammed Aziz, Hassane Mekhfi, Abderrahim Ziyyat, Abdelkhaleq Legssyer, Ahmed Melhaoui, Mohamed Berrabah, Mohamed Bnouham, Chakib Alem, Ferdinand Kouoh Elombo, Bernard Gressier, Jehan-François Desjeux, Bruno Eto

Article Affiliation:

Hanane Makrane

Abstract:

ETHNOPHARMACOLOGICAL RELEVANCE: Origanum majorana L. (Lamiaceae) is commonly used in Moroccan folk medicine to treat infantile colic, abdominal discomfort and diarrhea. Liquid stools and abdominal discomfort observed in acute infectious diarrhea are the consequences of imbalance between intestinal water secretion and absorption in the lumen, and relaxation of smooth muscle surrounding the intestinal mucosa.

AIM OF THE STUDY: The objective of our study was to see if aqueous extract of Origanum majorana L. (AEOM) may exhibit an effect on those deleterious mechanisms.

MATERIALS AND METHODS: The effect of AEOM on electrogenic Clsecretion and Naabsorption, the two main mechanisms underlying water movement in the intestine, was assessed on intestinal pieces of mice intestine mounted, in vitro, in Ussing chambers. AEOM effect on muscle relaxation was measured on rat intestinal smooth muscle mounted in an isotonic transducer.

RESULTS: 1) AEOM placed on the serosal (i.e. blood) side of the piece of jejunum entirely inhibited in a concentration-dependent manner the Forskolin-induced electrogenic chloride secretion, with an IC= 654 ± 8 µg/mL. 2) AEOM placed on the mucosal (i.e. luminal) side stimulated in a concentration-dependent manner an electrogenic Naabsorption, with an IC= 476.9 ± 1 µg/mL. 3) AEOM (1 mg/mL) inhibition of Forskolin-induced electrogenic secretion was almost entirely prevented by prior exposure to Cachannels or neurotransmitters inhibitors. 4) AEOM (1 mg/mL) proabsorptive effect was greater in the ileum and progressively declined in the jejunum, distal colon and proximal colon (minimal). 5) AEOM inhibited in a concentration-dependent manner smooth muscle Carbachol or KCl induced contraction, with an IC= 1.64 ± 0.2 mg/mL or 1.92 ± 0.8 mg/mL, respectively.

CONCLUSION: the present results indicate that aqueous extract of Origanum majorana L. exhibit positive cooperative effects on the main mechanisms that are involved in acute infectious diarrhea.

Study Type : Animal Study
Additional Links
Pharmacological Actions : Antidiarrheals : CK(110) : AC(20)

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