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Dominican Medicinal Plants: A Guide for Health Care Providers

by Jolene E. Yukes and Michael J. Balick, PhD

by Jolene E. Yukes and Michael J. Balick, PhD

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Activity/Effect Preparation Design & Model Results Reference<br />

Antibacterial Essential oils of M.<br />

piperita, M.<br />

spicata & M.<br />

arvensis &<br />

constituents<br />

Imai et al. 2001<br />

Antimicrobial M. aquatica, M.<br />

longifolia & M.<br />

piperita essential<br />

oils<br />

In vitro: Helicobacter<br />

pylori, Salmonella<br />

enteritidis,<br />

Escherichia coli<br />

O157:H7, methicillinresistant<br />

Staphylococcus<br />

aureus (MRSA) &<br />

methicillin sensitive<br />

S. aureus (MSSA)<br />

In vitro: pathogenic<br />

bacterial & fungi<br />

species<br />

Antifungal Peppermint oil In vitro: 12<br />

pathogenic fungi,<br />

including Candida<br />

albicans,<br />

Trichophyton<br />

mentagrophytes,<br />

Aspergillus fumigatus<br />

& Cryptococcus<br />

neo<strong>for</strong>mans<br />

Gastrointestinal<br />

actions<br />

Gastrointestinal<br />

effects<br />

Aqueous extracts<br />

of M. piperita fresh<br />

or dried leaf<br />

Peppermint oil (78<br />

µg/mL) & menthol<br />

Animal model:<br />

isolated rabbit<br />

duodenum with<br />

acetylcholine- &<br />

barium chlorideinduced<br />

muscle<br />

contraction<br />

Animal models:<br />

isolated muscle &<br />

gastrointestinal<br />

preparations,<br />

including guinea-pig<br />

ileum<br />

Showed dose-dependent<br />

inhibition of bacterial<br />

proliferation in each<br />

strain; also showed<br />

bactericidal activity in<br />

phosphate-buffered<br />

saline<br />

All essential oils showed<br />

strong antibacterial<br />

activity, especially<br />

against Escherichia coli<br />

strains, & significant<br />

fungistatic & fungicidal<br />

activity; M. piperita<br />

showed the most potent<br />

activity<br />

Showed fungicidal<br />

activity against 11 of 12<br />

fungi tested with a MIC<br />

range of 0.25-10 µL/mL<br />

Smooth muscle relaxant<br />

effect; exhibited<br />

decrease in spontaneous<br />

activity; dried leaf<br />

extract showed more<br />

activity than fresh leaf;<br />

results suggest<br />

mechanism does not<br />

involve cholinergic<br />

antagonism or<br />

adrenergic agonism<br />

Smooth muscle<br />

relaxation via calcium<br />

channel antagonism;<br />

competitively inhibited<br />

binding of calcium<br />

channel blockers<br />

Mimica-Dukić et<br />

al. 2003<br />

Pattnaik et al.<br />

1996<br />

Mahmood et al.<br />

2003<br />

Hawthorn et al.<br />

1988<br />

289

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