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Table 1 Antiprotozoal activity of the PFs and NPFs of I. confusa, I. pseudacorus and I. germanica and their cytotoxicity against MRC-5 and PMM cells

From: Correlation between secondary metabolites of Iris confusa Sealy and Iris pseudacorus L. and their newly explored antiprotozoal potentials

Tested sample

MRC-5

PMM

P. falciparum

T. b. brucei

T. b. rhodesiense

T. cruzi

L. infantum

 

μg/mL

CC50

Sc

CC50

Sc

IC50

SIa

Sc

IC50

SIa

Sc

IC50

SIa

Sc

IC50

SIa

Sc

IC50

SIa

SIb

Sc

I. confusa

PF

10.84a

3

 > 64.00a

1

Nc

Nc

Nc

 > 64.00a

0.17

1

 > 64.00a

0.17

1

 > 64.00a

0.17

1

 > 64.00a

0.17

0.99

1

NPF

28.15b

2

32.00b

1

1.08a

26.11

5

32.69b

0.86

1

16.00b

1.76

2

8.83b

3.19

3

12.70c

2.22

1.00

2

I. pseudacorus

PF

 > 64.00e

1

 > 64.00a

1

30.64c

2.09

1

62.14c

1.03

1

 > 64.00a

1.00

1

 > 64.00a

1.00

1

 > 64.00a

1.00

5.04

1

NPF

29.96c

2

32.00b

1

1.61b

18.64

4

30.99d

0.97

1

8.17c

3.67

3

8.14b

3.68

3

32.46b

0.92

1.00

1

I. germanica

PF

 > 64.00e

1

 > 64.00a

1

23.97d

2.67

2

 > 64.00a

1.00

1

 > 64.00a

1.00

1

 > 64.00a

1.00

1

 > 64.00a

1.00

1.00

1

NPF

32.00d

2

32.00b

1

2.59b

12.34

4

33.45b

0.96

1

23.35d

1.37

2

10.30c

3.11

3

32.46b

0.99

0.99

1

Reference drugs

10.88a

 

5.80c

 

0.09a

  

0.05e

  

0.05e

  

1.72d

  

6.35d

   
  1. Scores adopted by Laboratory for Microbiology, Parasitology & Hygiene (LMPH) (μg/mL) for evaluation of the antiprotozoal and cytotoxic activities of the tested fractions. T. b. brucei, score 1: > 24, 2: > 9, 3: > 3, 4: > 1.2, 5: > 0.4; T. b. rhodesiense, score 1: > 24, 2: > 9, 3: > 3, 4: > 1.2, 5: > 0.4; T. cruzi, score 1: > 30, 2: > 12, 3: > 2, 4: > 1.51, 5: > 0.55; L. infantum, score1: > 30, 2: > 11, 3: > 5, 4:  >1.51  , 5: > 0.5, P. falciparum K-1, score 1: > 31, 2: > 10, 3: > 4, 4: > 1.5, 5:  > 1.2; cytotoxicity on MRC-5/PMM: no cytotoxicity score 1: > 33, low cytotoxicity score 2: > 11; moderate cytotoxicity score 3: > 5, high cytotoxicity score 4: 1 > 1, 5: > 0.6; Activity score 1: inactive, 2: weak, 3: moderate, 4: pronounced, 5: strong.CC50: median cytotoxic concentration; IC50: median inhibitory concentration; MRC-5: Diploid human embryonic lung fibroblast; Nc: not completed; NPF: non-polar fraction; PF: polar fraction; PMM: primary peritoneal murine macrophages; SIa: selectivity index = CC50(MRC-5 fibroblast)/IC50(parasite); SIb: selectivity index = CC50 (PMM macrophages)/IC50(parasite); SC: score. IC50 and CC50 in μg/mL. Reference drugs; Tamoxifen for MRC-5, Amphotercin B for PMM, Chloroquine for P. falciparum, Suramin for T. b. brucei and T. b. rhodesiense, Benznidazole for T. cruzi, Miltefosine for L. infantum. Different letters in each column indicate significant differences at P < 0.0001 with Tukey’s test