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      Efecto gastroprotector y capacidad antioxidante del extracto acuoso de las vainas de Caesalpinia spinosa ‘tara’, en animales de experimentación Translated title: Gastroprotective effect and antioxidant capacity of the aqueous extract of the pods of Caesalpinia spinosa "tara" in experimental animals

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          Abstract

          Objetivo. Determinar el efecto protector del extracto acuoso de las vainas de tara Caesalpinia spinosa (Molina) Kuntze, en la mucosa gástrica de animales de experimentación. Diseño. Experimental. Institución. Centro de Investigación de Bioquímica y Nutrición, Facultad de Medicina, Universidad Nacional Mayor de San Marcos, Lima, Perú. Material biológico. Extracto acuoso de las vainas de tara (EAVT) y 36 ratas albinas macho (217g ± 22 g). Intervenciones. Las ratas albinas previo ayuno de 24 h fueron divididas en 6 grupos: GI y GII, NaCl 0,9% a 20 mL/kg; GIII, GIV y GV, EAVT en dosis de 100, 400 y 800 mg/kg, respectivamente; y, GVI hidroflat 500 mg/kg. Una hora después, se provocó la injuria gástrica con etanol 70° para luego realizar la gastrectomía. Principales medidas de resultados. Porcentaje de protección de la mucosa, empleando el software ImageJ 1.48v, y para la actividad antioxidante el método 2,2-difenil-1-picrilhidracil (DPPH). Resultados. El EAVT presentó compuestos fenólicos y taninos en mayor cantidad. Exhibió alta actividad antioxidante (IC50 = 1,12 ± 0,04 μg/mL). El mayor porcentaje de protección se observó a las dosis de 800 mg/kg (99,7%) y 400 mg/ kg (73,1%) p<0,01, lo cual fue confirmado por el análisis histopatológico. Conclusiones. El EAVT mostró actividad antioxidante y protectora en el modelo experimental de lesión gástrica inducida por etanol de 70°, de manera dosis dependiente.

          Translated abstract

          Objective: To determine the protective effect of the aqueous extract of the pods of Caesalpinia spinosa (Molina) Kuntze "tara" in the gastric mucosa of experimental animals. Design: Experimental. Institution: Research Center on Biochemistry and Nutrition, Faculty of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru. Biological material: Aqueous extract tara pods (AETP) and 36 albino male rats (217g ± 22 g). Interventions: After a 24-hour fast, the albino rats were divided into 6 groups: GI and GII, NaCl 0.9% to 20 mL/kg; GIII, GIV and GV, AETP at doses of 100, 400 and 800 mg/kg respectively; and GVI, Hidroflat 500 mg/kg. An hour later, gastric injury was caused with 70° ethanol and then gastrectomy was performed. Main outcome measures: Percentage of mucosal protection, using the software ImageJ 1.48v, and the antioxidant activity method 2, 2-diphenyl-1-picrylhydrazyl (DPPH). Results: AETP presented tannins and phenolic compounds in large amounts. High antioxidant activity (IC50 = 1, 1 ± 0.04 μg/mL) was exhibited. The highest percentage of protection was observed at doses of 800 mg/kg (99; 7%) and 400 mg/kg (73; 1%), p<0, 01, confirmed by histopathological analysis. Conclusions: AETP exhibited antioxidant and protective activity in the experimental model of gastric injury induced by ethanol 70°, in a dose-dependent manner.

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          Most cited references27

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          Radical scavenging and antioxidant activity of tannic acid

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            Haemanalysis of tannins: The concept of relative astringency

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              Cytoprotection by prostaglandins in rats. Prevention of gastric necrosis produced by alcohol, HCl, NaOH, hypertonic NaCl, and thermal injury.

              Oral administration to fasted rats of either absolute ethanol, 0.6 N hydrochloric acid, 0.2 N sodium hydroxide, 25% sodium chloride, or boiling water produced extensive necrosis of the gastric mucosa. Pretreatment with several prostaglandins of the A, E, or F type, either orally or subcutaneously, prevented such necrosis, and the effect was dose-dependent. This property of prostaglandins is called "cytoprotection." The protective effect against oral administration of absolute ethanol was already maximal 1 min after PGE2 given orally, and 15-30 min after PGE2 given subcutaneously. Cytoprotection by prostaglandins is unrelated to the inhibition of gastric acid secretion since, (a) it is maximal at doses that have no effect on gastric secretion, and (b) anti-secretory compounds (cimetidine, methscopolamine bromide) and antacids are not cytoprotective. Although the mechanism of gastric cytoprotection is unknown, prostaglandins appear to increase the resistance of gastric mucosal cells to the necrotizing effect of strong irritants. These results suggest that certain prostaglandins, by a mechanism other than the inhibition of gastric acid secretion, maintain the cellular integrity of the gastric mucosa, and might be beneficial in the treatment of a variety of diseases in which gastric mucosal injury is present.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                afm
                Anales de la Facultad de Medicina
                An. Fac. med.
                Universidad Nacional Mayor de San Marcos. Facultad de Medicina (Lima, , Peru )
                1025-5583
                January 2017
                : 78
                : 1
                : 61-66
                Affiliations
                [01] Lima orgnameUniversidad Nacional Mayor de San Marcos orgdiv1Facultad de Medicina Perú
                Article
                S1025-55832017000100010
                10.15381/anales.v78i1.13023
                d3deda97-8f60-4aae-ac8c-2b1d9f560824

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 14 June 2016
                : 08 October 2016
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 27, Pages: 6
                Product

                SciELO Peru


                Tara,Mucosa Gástrica,Gastritis,Mucoprotección,Caesalpinia spinosa,Gastric Mucosa,Mucus Protection

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