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 8,673 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

In order to appraise some of the ethnomedical uses of Sclerocarya birrea (A. Rich.) Hochst., subspecies caffra (Sond.) Kokwaro [family: Anacardiaceae], the present study was undertaken to investigate the analgesic, anti-inflammatory and anti-diabetic properties of the plant's stem-bark aqueous extract in experimental models of pain, inflammation and diabetes mellitus. The analgesic effect of Sclerocarya birrea stem-bark aqueous extract was evaluated in mice, while its anti-inflammatory and anti-diabetic effects were investigated in rats. Diclofenac (DIC, 100 mg/kg p. o.) and chlorpropamide (250 mg/kg p. o.) were used respectively as reference analgesic, anti-inflammatory and anti-diabetic agents for comparison. Like diclofenac (DIC, 100 mg/kg p. o.), Sclerocarya birrea stem-bark aqueous extract (SBE, 100-800 mg/kg p. o.) produced dose-dependent, significant protection (p < 0.05-0.001) against electrical heat-induced pain. The plant extract (SBE, 25-800 mg/kg p. o.) also produced dose- and time-related, sustained and significant reductions (p < 0.05-0.001) in the fresh egg albumin-induced acute inflammation of the rat hind paw oedema. However, the analgesic and anti-inflammatory effects of the plant's extract were found to be approximately 10-15 times less than that of diclofenac. In one set of experiments involving hypoglycaemic/antidiabetic evaluation of the plant's extract, graded doses of Sclerocarya birrea stem-bark aqueous extract (SBE, 25-800 mg/kg p. o.) were separately administered to groups of fasted normal and fasted diabetic rats. In another set of experiments, a single dose of the plant's aqueous extract (SBE, 800 mg/kg p. o.) was used. The hypoglycaemic effect of this single dose of Sclerocarya birrea stem-bark aqueous extract (SBE, 800 mg/kg p. o.) was compared with that of chlorpropamide (250 mg/kg p. o.) in both fasted normal and fasted streptozotocin (STZ)-treated diabetic rats. Following acute treatment, relatively moderate to high doses of Sclerocarya birrea stem-bark aqueous extract (SBE, 25-800 mg/kg p. o.) produced dose-dependent, significant reductions (p < 0.05-0.001) in the blood glucose concentrations of both fasted normal and fasted diabetic rats. Chlorpropamide (250 mg/kg p. o.) also produced significant reductions (p < 0.05-0.001) in the blood glucose concentrations of the fasted normal and fasted diabetic rats. Administration of the single dose of Sclerocarya birrea stem-bark aqueous extract (SBE, 800 mg/kg p. o.) significantly reduced (p < 0.01-0.001) the blood glucose levels of both fasted normal (normoglycaemic) and fasted STZ-treated, diabetic rats. The results of this experimental animal study indicate that Sclerocarya birrea stem-bark aqueous extract possesses analgesic, anti-inflammatory and hypoglycaemic properties. These experimental findings lend pharmacological support to the suggested folkloric uses of the plant's stem-bark in the management and/or control of pain, inflammatory conditions, and adult-onset, type-2 diabetes mellitus in some communities of South Africa.
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PMID:Evaluation of the analgesic, anti-inflammatory and anti-diabetic properties of Sclerocarya birrea (A. Rich.) Hochst. stem-bark aqueous extract in mice and rats. 1547 10

South Africa is blessed with a rich floral biodiversity of medicinally useful plants. One such plant is Harpagophytum procumbens DC (Family: Pedaliaceae). H. procumbens is widely used in South African traditional medicine for the treatment, management and/or control of a variety of human ailments. In the present study, the analgesic effect of H. procumbens secondary root aqueous extract was evaluated in mice, using the 'hot-plate' and 'acetic acid' test methods; while the antiinflammatory and antidiabetic effects of the plant's secondary root extract were investigated in rats. Fresh egg albumin-induced pedal oedema and streptozotocin (STZ)-induced diabetes mellitus were used as experimental test models of inflammation and diabetes Diclofenac (DIC, 100 mg/kg i.p.) was used as a reference analgesic and antiinflammatory agent for comparison. Chlorpropamide (250 mg/kg p.o.) was used as a reference hypoglycaemic agent for comparison. H. procumbens root aqueous extract (HPE, 50-800 mg/kg i.p.) produced significant (p < 0.05-0.001) analgesic effects against thermally and chemically induced nociceptive pain stimuli in mice. H. procumbens root extract (HPE, 50-800 mg/kg i.p.) also produced dose-related, significant reductions (p < 0.05-0.001) of the fresh egg albumin-induced acute inflammation of the rat hind paw oedema. Furthermore, the plant extract (HPE, 50-800 mg/kg i.p.) produced dose-dependent, significant reductions (p < 0.05-0.001) in the blood glucose concentrations of both fasted normal and fasted diabetic rats. The results of this experimental animal study indicate that H. procumbens root aqueous extract possesses analgesic, antiinflammatory and hypoglycaemic properties, and lend pharmacological support to the suggested folklore uses of Harpagophytum procumbens root in the management and/or control of painful, arthritic and other inflammatory conditions, as well as for adult-onset, type-2 diabetes mellitus in some communities of South Africa.
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PMID:Analgesic, antiinflammatory and antidiabetic properties of Harpagophytum procumbens DC (Pedaliaceae) secondary root aqueous extract. 1574 43