Intraperitoneal Administration Of Extract Research Articles

Effect of the leaves aqueous extract of Jodina rhombifolia (Hook. & Arn.) Reissek (Santalaceae) on intestinal function and its acute toxicity

Ethnopharmacological relevanceIn Argentine traditional medicine it is recorded the use of Jodina rhombifolia (Hook. & Arn.) Reissek (Santalaceae) leaves for treating various affections that compromise the intestinal normal functioning. Aim of the studyThe aim of this study was to assess the effect of J. rhombifolia leaves lyophilized aqueous extract on the intestinal function by means of in vivo and ex vivo experimental assays for determinate the antidiarrheal and antispasmodic capacity. Furthermore, was to evaluate its acute toxicity potential by oral and intraperitoneal administration of extract. Materials and methodsThe in vivo assays were conducted by the experimental techniques of intestinal transit in mice, intestinal fluid accumulation in rats and Castor oil-induced diarrhea in mice. In the ex vivo assays, isolated rat duodenum and ileum segments were used for to evaluate the antispasmodic activity through contractile concentration-response curves induced by Carbachol and CaCl2. The acute toxicity of the extract was also investigated by oral and intraperitoneal administration. ResultsThe extract intraperitoneal administration at the doses 125, 250 and 500 mg/kg, caused a marked reduction in the normal intestinal transit and in the number of diarrheal episodes in a dose-dependent manner. However, the extract did not produce significant changes in the intestinal fluid accumulation with any of the tested dose. The extract demonstrated a non-competitive inhibitory effect on the contractions of intestinal smooth muscle experimentally provoked by the spasmogenic agents Carbachol and CaCl2 in a dose-dependent manner (IC50 = 10.57 ± 1.38 and 6.29 ± 1.54 mg extract/ml Tyrode solution in the isolated organ bath, respectively). ANOVA indicated a significative effect of treatment (p < 0.001). ConclusionsThe scientific evidence achieved based in the used experimental models allows us to indicate that J. rhombifolia leaves lyophilized aqueous extract manifest an antispasmodic activity on intestinal smooth muscle without observation of apparent toxicity symptoms.

In-Vivo Oral and Intraperitoneal Administration of Extract from Vernonia lasiopus

Diabetes mellitus in Kenya is a major health concern as it is known to result in mobility, mortality, and long-term complications. Conventional drugs used in the management of diabetes mellitus are unavailable, expensive, and have numerous side effects. Vernonia lasiopus plant has a folkloric usage in diabetes mellitus management though its efficacy needs to be evaluated scientifically. This study therefore aimed at establishing in vivo antihyperglycemic effect of aqueous leaf extract from Vernonia lasiopus in alloxan-induced diabetic male albino mice. Eight groups of mice each group having five mice were used in the study. The plasma sugar lowering effect was monitored after intraperitoneal and oral administration of Vernonia lasiopus extract at doses of 25, 48.4, 93.5, 180.9 and 350 mg/kg body weight. The treatment effects of extracts were compared with the positive controls (insulin and glibenclamide treated for intraperitoneal and oral routes respectively). Standard procedures were used to determine the phytochemicals present in the extracts. ANOVA and post-ANOVA was used to analyze the data collected. The results of the study showed that the aqueous leaves extract at all the five doses administered demonstrated antihyperglycemic effect in a dose independent manner. The phytochemical results showed the presence of phenols, tannins, alkaloids, and flavonoids. The antidiabetic effects shown by the plant extract could be due to the phytochemicals present. Vernonia lasiopus aqueous leaves extract has antidiabetic effects and the study therefore recommends its folkloric use in management of diabetes mellitus.

Antioxidant, hepatoprotective and hypolipidemic effects of methanolic root extract of Cassia singueana in rats following acute and chronic carbon tetrachloride intoxication

ObjectiveTo evaluate in vivo antioxidant and hepatoprotective activities of the methanolic extract of the root of Cassia singueana in rats following acute and chronic carbon tetrachloride intoxication. MethodsMalondialdehyde (MDA), aspartate aminotransferase (AST), alanine aminotransferase (ALT) and bilirubin as indices of liver damage and lipid peroxidation were detected in rats after intraperitoneal administration of extract (5 mg/kg). ResultsThe liver, kidney and heart showed significant reduction (P<0.05) in the levels of MDA from (0.18±0.04), (0.23±0.07) and (0.26±0.10) nmol/mg respectively in the CCl4 control to (0.15±0.03), (0.17±0.04) and (0.17±0.07) nmol/mg protein in groups pre-treated with the extract for three days at 5 mg/kg). Similarly, compared to the CCl4 control, significant reduction (P<0.05) in serum AST, ALT and bilirubin as well as in level of total cholesterol and MDA with concomitant increase in HDL cholesterol, superoxide dismutase and catalase levels when CCl4-intoxicated rats were treated with Cassia singueana root extract for two weeks. ConclusionsThese results suggest that methanolic extract of Cassia singueana contain potent antioxidant compounds that can offer significant protection against hepatic and oxidative injuries.

Anti-Inflammatory and Antinociceptive Effects of Mitragyna speciosa Korth Methanolic Extract

Objectives: To determine the anti-inflammatory and antinociceptive activities of Mitragyna speciosa Korth methanol extract in rodents. Materials and Methods: Anti-inflammatory activity was evaluated using carrageenan-induced paw edema and cotton pellet-induced granuloma tests in rats. Antinociceptive activity was measured using the writhing test and the hot plate test in mice, and the formalin test in rats. All drugs and extracts were diluted in dH₂O and administered through the intraperitoneal route. Results were analyzed using one-way ANOVA followed by Dunnett’s test for multiple comparisons among groups. Results: Results showed that intraperitoneal administration of the extract at doses of 100 and 200 mg/kg produced significant dose-dependent activity in all of the nociceptive models evaluated (p < 0.05). With the formalin test, the antinociceptive activity in mice was inhibited only at the highest dose of the extract (200 mg/kg). The study also showed that intraperitoneal administration of the methanol extract of M. speciosa (100 and 200 mg/kg) significantly and dose-dependently suppressed the development of carrageenan-induced rat paw edema (p < 0.05). In the chronic test, however, significant reduction in granulomatous tissue formation in rats was observed only at the highest dose of the methanol extract of M. speciosa (200 mg/kg, p < 0.05). Conclusion: The present study suggests the presence of potent antinociceptive and anti-inflammatory principles in the extract, supporting its folkloric use for the treatment of these conditions.