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Table 2 Mean IC50 of Egyptian plant extracts against Plasmodium falciparum (3D7) and HFF cells in vitro

From: Wild Egyptian medicinal plants show in vitro and in vivo cytotoxicity and antimalarial activities

Plant Extract

Plant family

Plant part

Mean IC50 (μg/ml)

Mean Selectivity index (SI)

P. falciparum (3D7) a (±SD)

HFF cells b (±SD)

Aerva javanica (Burm.f.) Juss. ex Schult.

Amaranthaceae

leaves

> 100 (43.4)

378.1 (134.0)

> 3.7

Anabasis setifera Moq.

Amaranthaceae

leaves

> 100

1263.6 (194.9)

> 12.6

Artemisia judaica L.

Asteraceae

leaves

20.0 (3.5)

316.8 (88.8)

15.8

Calotropis procera (Aiton) Dryand.

aq.

Apocynaceae

flowers

> 100

41.5 (22.6)

> 0.4

M80%

flowers

> 100

2.9 (1.5)

> 0.02

Carthamus tinctorius L.

Asteraceae

flowers

> 100

444.7 (169.5)

> 4.4

Citrullus colocynthis (L.) Schrad.

E70%

Cucurbitaceae

seeds

51.7 (10.8)

88.0 (14.3)

1.7

M80%

seeds

45.9 (23.3)

65.6 (7.2)

1.4

Cleome droserifolia (Forssk.) Delile

Cleomaceae

leaves

32.1 (3.8)

370.9 (95.3)

11.5

Forsskaolea tenacissima L.

Urticaceae

leaves

> 100

519.0 (141.9)

> 5.1

Ochradenus baccatus Delile

Resedaceae

fruit

> 100

1179. 0 (245.4)

> 11.7

Ocimum basilicum L. (E70%)

Lamiaceae

leaves

> 100

252.6 (13.9)

> 2.5

Pulicaria undulata (L.) C.A.Mey.

(E70%)

Asteraceae

flowers

18.9 (2.8)

55.5 (10.7)

2.9

(M80%)

flowers

> 100 (38.2)

197.5 (61.3)

> 1.9

Trichodesma africanum (L.) Sm.

Boraginaceae

leaves

11.7 (4.7)

413.0 (96.9)

35.2

Vachellia tortilis subsp. raddiana (Savi) Kyal. & Boatwr.

Fabaceae

seeds

40.0 (2.8)

554.5 (110.5)

13.8

Chloroquine

  

0.009

  
  1. a The mean IC50 and standard deviation values against P. falciparum were calculated from the average of three independent experiments after a 72-h culture of the parasites with a plant extract. b the mean IC50 against HFF cells was calculated from three independent experiments after a 72-h culture. Except those that are indicated to have an ethanolic or aqueous extract, all the plant extractions are methanolic. IC50 half maximal inhibitory concentration 50, SD standard deviation, SI selectivity index, HFF human foreskin fibroblast, M80 80% methanol, E70 70% ethanol, aq. aqueous