university of kwazulu-natal faculty of science and agriculture school ...
university of kwazulu-natal faculty of science and agriculture school ...
university of kwazulu-natal faculty of science and agriculture school ...
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Plectranthus<br />
species<br />
P. amboinicus<br />
P. aff.<br />
puberulentus<br />
P. forsteri<br />
‘marginatus’<br />
P. puberulentus<br />
P. saccatus<br />
P. zuluensis<br />
Solvent <strong>of</strong><br />
Extraction<br />
70% ethanol lv<br />
leaf juice<br />
composition<br />
(orally,<br />
topically or<br />
injections)<br />
acetone lv<br />
Pharmacological details Reference<br />
Anti-tumor activity<br />
anti-tumor (Sarcoma-180<br />
ascite <strong>and</strong> Ehrlich ascite<br />
carcinoma) activity in mice<br />
Inhibits growth <strong>of</strong><br />
carcinoma (HepG2, Huh7)<br />
<strong>and</strong> melanoma (Bowes)<br />
cells<br />
Insect-antifeedant activity<br />
antifeedant activity against<br />
S. littoralis<br />
Gurgel et al., 2009<br />
Cheng-Yu et al.,<br />
2006<br />
Wellsow et al.,<br />
2006<br />
NB. The term ‘mixture’ refers to the testing <strong>of</strong> a composition comprising <strong>of</strong> a Plectranthus plant extract<br />
with either another plant extract/essential oil (not necessarily belonging to the Plectranthus species) or an<br />
appropriate pharmaceutical drug.<br />
Key: lv: leaves, rt: roots, s: stems, a: aerial parts, w: whole plant, f: flowers<br />
Plectranthus <strong>and</strong> Coleus species act as abortificients (Almeida <strong>and</strong> Lemonica, 2000),<br />
prevent the formation <strong>of</strong> plaque build-up on teeth (Figueiredo et al., 2010), are used<br />
topically as a barrier against harmful UV rays (Chen et al., 2009), act as a hair growth<br />
stimulant (Kiyoshi et al., 2005) <strong>and</strong> inhibitor (Kazuo et al., 2006), are used in the<br />
treatment <strong>of</strong> rheumatoid arthritis (Rey-Yuh et al., 2008; Jui-Yu et al., 2009), act as a<br />
scorpion venom antidote (Uawonggul et al., 2006) <strong>and</strong> are used to treat Alzheimers<br />
disease (Fale et al., 2009) as well as many other ailments, disorders <strong>and</strong> diseases (table<br />
5b).<br />
P. amboinicus <strong>and</strong> P. barbatus seem to be the most commonly tested species each having<br />
widespread application. Once again the leaves appear to be the most popular plant part<br />
used. There has been just one study on the root extract. The stems <strong>and</strong> roots need to be<br />
studied further.<br />
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