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PubMed2004

Antibacterial screening of plants used in Iranian folkloric medicine.

Fifty methanolic plant extracts belonging to 44 plant species of 33 families finding use in Iranian folkloric medicine were screened for antibacterial activity. Thirty samples, including 28 species in 20 families, had antibacterial activity against at least on one of the bacteria. Among the active plants, 32.6% were active against G(-), 62% against G(+), and 47.3% against both G(-) and G(+) bacteria. Dianthus coryophyllus was active against all tested G(-) and G(+) bacteria except Micrococcus luteus. Most susceptible G(-) bacteria were Klebsiella pneumoniae and Bordetella bronchiseptica and least susceptible G(-) bacterium was Escherichia coli. In G(+) bacteria, most and least susceptible were Staphylococcus aureus and M. luteus, respectively. The least MIC, as 0.62 mg/ml, belonged to Myrtus communis seeds against S. aureus, Bacillus cereus and B. bronchiseptica, and to Terminalia chebula ripe seeds against S. aureus.

Anti-Infective Agents↗
PubMed2002

Pharmacological evidence favouring the folkloric use of Diospyros mespiliformis Hochst in the relief of pain and fever.

The methanol extract of Diospyros mespiliformis was evaluated for its claimed folkloric usage in the relief of pain and fever. Antipyretic, analgesic and anti-inflammatory effects of the extract were evaluated in rats and mice. Studies were carried out on yeast-induced pyrexia in rats, acetic acid-induced writhing in mice, formalin test and egg albumin-induced anti-inflammatory activity in rats. The extract (50 and 100 mg/kg i.p.) gave a potent antipyretic effect for 100 mg/kg and significant activity (P<0.05) against all the analgesic and anti-inflammatory models used. The LD(50) of the extract was estimated to be 513.80+/-33.92 mg/kg i.p. in mice. These results provide support for the use of the plant in relieving pain and fever.

Animals↗
PubMed2000

Antibacterial activity of some folklore medicinal plants used by tribals in Western Ghats of India.

A series of 30 Indian folklore medicinal plants used by tribal healers to treat infections, were screened for antibacterial properties at 10 mg/ml concentration by using disc diffusion method against Bacillus subtilis, Escherichia coli, Klebsiella aerogenes, Proteus vulgaris, Pseudomonas aerogenes and Staphylococcus aureus. Twenty plant species showed activity against one or more species of bacteria used in this assay; among them the leaf extracts of Cassia occidentalis and Cassia auriculata exhibited significant broad spectrum activity against B. subtilis and S. aureus. Ten plant species were not found active against all tested bacteria. These results were compared with results obtained using standard antibiotics, chloramphenicol (30 microg/disc) and streptomycin (30 microg/disc) which served as a reference for inhibition zone diameter.

Anti-Bacterial Agents↗
PubMedDate not supplied

Effect of polyphloretin phosphate on the response of non-gravid rat uterus to folkloric and standard oxytocics in vitro.

Polyphloretin phosphate (PPP) has been reported by previous workers to be a specific antagonist of prostaglandin (PGE(1), PGE(2) & PGF(2 alpha))-induced contractions of isolated jird colon, gerbil colon, guinea pig ileum, and rabbit jejunum. In the present study, we examined the effect of PPP on uterotonic activities of crude papaya latex (a folkloric oxytocic), PGF(2 alpha), oxytocin, acetylcholine, and 5-hydroxytryptamine (standard oxytocics) on non-gravid, oestrogen-primed (50 microg/kg) rats in vitro. The effect of PPP on the oxytocics was evaluated qualitatively by incubating the tissues in PPP (25 - 400 microg/ml) for 20 min prior to the addition of a constant concentration of each oxytocic. PPP concentration dependently inhibited the contractile response of the uterine muscles to all the oxytocics. The inhibition was reversible after washing out the drugs. Results of the present study suggest that PPP is a non-specific and reversible antagonist of the response of non-gravid rat uterine smooth muscle to oxytocics in vitro. The specificity of PPP as a prostaglandin antagonist could therefore be species/tissue dependent.

Animals↗
PubMed2006

Screening for antimicrobial activity of ten medicinal plants used in Colombian folkloric medicine: a possible alternative in the treatment of non-nosocomial infections.

BACKGROUND: The antimicrobial activity and Minimal Inhibitory Concentration (MIC) of the extracts of Bidens pilosa L., Bixa orellana L., Cecropia peltata L., Cinchona officinalis L., Gliricidia sepium H.B. & K, Jacaranda mimosifolia D.Don, Justicia secunda Vahl., Piper pulchrum C.DC, P. paniculata L. and Spilanthes americana Hieron were evaluated against five bacteria (Staphylococcus aureus, Streptococcus beta hemolític, Bacillus cereus, Pseudomonas aeruginosa, and Escherichia coli), and one yeast (Candida albicans). These plants are used in Colombian folk medicine to treat infections of microbial origin. METHODS: Plants were collected by farmers and traditional healers. The ethanol, hexane and water extracts were obtained by standard methods. The antimicrobial activity was found by using a modified agar well diffusion method. All microorganisms were obtained from the American Type Culture Collection (ATCC). MIC was determined in the plant extracts that showed some efficacy against the tested microorganisms. Gentamycin sulfate (1.0 microg/ml), clindamycin (0.3 microg/ml) and nystatin (1.0 microg/ml) were used as positive controls. RESULTS: The water extracts of Bidens pilosa L., Jacaranda mimosifolia D.Don, and Piper pulchrum C.DC showed a higher activity against Bacillus cereus and Escherichia coli than gentamycin sulfate. Similarly, the ethanol extracts of all species were active against Staphylococcus aureus except for Justicia secunda. Furthermore, Bixa orellana L, Justicia secunda Vahl. and Piper pulchrum C.DC presented the lowest MICs against Escherichia coli (0.8, 0.6 and 0.6 microg/ml, respectively) compared to gentamycin sulfate (0.9 8 g/ml). Likewise, Justicia secunda and Piper pulchrum C.DC showed an analogous MIC against Candida albicans (0.5 and 0.6 microg/ml, respectively) compared to nystatin (0.6 microg/ml). Bixa orellana L, exhibited a better MIC against Bacillus cereus (0.2 microg/ml) than gentamycin sulfate (0.5 microg/ml). CONCLUSION: This in vitro study corroborated the antimicrobial activity of the selected plants used in folkloric medicine. All these plants were effective against three or more of the pathogenic microorganisms. However, they were ineffective against Streptococcus beta hemolytic and Pseudomonas aeruginosa. Their medicinal use in infections associated with these two species is not recommended. This study also showed that Bixa orellana L, Justicia secunda Vahl. and Piper pulchrum C.DC could be potential sources of new antimicrobial agents.

Acanthaceae↗
PubMed1999

Ethnobiology in Mizoram state: folklore medico-zoology.

Studies in ethnobotany and ethnozoology under the umbrella of Ethnobiology seem imbalanced in the sense that enormous publications have accumulated in case of the former but only little information has been disseminated in case of the latter. While 7500 wild plant species are known to be used by tribals in medicine, only 76 species of animals have been shown as medicinal resources (Anonymous, 1994). The present paper is the first-hand information of folklore medicine and animals in Mizoram. The animals enumerated comprise of 25 vertebrates and 31 invertebrates and are used for treatment of over 40 kinds of diseases or ailments, including jaundice, tuberculosis, hepatitis, cancer, asthma and veterinary disease. The author, however, does not recommend destruction of wild animals, be it for food or medicine.

Animals↗
PubMedDate not supplied

The search for novel anticancer agents: a differentiation-based assay and analysis of a folklore product.

One alternative approach to the current use of cytotoxic anticancer drugs involves the use of differentiation-inducing agents. However, a wider application of this strategy would require the development of assays to search for new differentiation-inducing agents. In this report we describe an in vitro assay using the murine erythroleukemia (clone 3-1) cells. Tests for the efficacy of this assay for the analysis of antineoplastic activity in natural products led to studies on pau d'arco, a South American folklore product used in the treatment of cancer. Purification of the activity in aqueous extracts by solvent partition and thin layer chromatography (TLC) indicated the presence of two activities, one of which was identified as lapachol. The activity in the pau d'arco extracts and of lapachol was inhibited by vitamin K1. As a vitamin K antagonist, lapachol might target such vitamin K-dependent reactions as the activation of a ligand for the Axl receptor tyrosine kinase.

Animals↗