Skip to main content

Table 6 Enzyme activity observed in Aedes aegypti from three insecticide resistant populations and the Rockefeller strain.

From: Insecticide resistance in Aedes aegypti populations from Ceará, Brazil

 

α-esterase

(nmol/mg ptn/min)

β-esterase

(nmol/mg ptn/min)

Esterases-PNPA

(Δabs/mg ptn/min)

Populations/enzyme activity

N

Median

99 th Percentile

N

Median

99 th Percentile

N

Median

99 th Percentile

Rockefeller

104

40.87

65.87

112

71.46

98.83

119

2.96

5.33

Populations/enzyme activity

N

Median

(% > p99)

N

Median

(% > p99)

N

Median

(% > p99)

Crato

51

64.58

43.0

51

59.42

0

51

3.57

0

Barbalha

108

70.03

57.0

116

73.12

13.0

119

5.11

41.0

Juazeiro do Norte1

108

63.67

45.0

89

74.72

7.0

108

4.83

39.0

Populations/enzyme activity

Acetylcholinesterase (ACE)

(% act) a

Glutathione S-transferase (GST)

(mmol/mg ptn/min)

Mixed function oxidases (MFO)

(nmol/mg ptn/min)

 

N

Median

99 th Percentile

N

Median

99 th Percentile

N

Median

99 th Percentile

Rockefeller

131

26.06

34.76

114

0.70

1.97

113

24.85

47.35

Populations/enzyme activity

N

Median

(% > p99)

N

Median

(% > p99)

N

Median

(% > p99)

Crato

65

25.30

6.0

51

1.39

18.0

50

16.23

0

Barbalha

113

24.17

3.0

116

1.90

42.0

101

22.54

0

Juazeiro do Norte1

109

28.90

5.0

98

1.89

42.0

92

15.32

2.0

  1. N = number of females; % > p99: rate of the population with activity higher than the Rockefeller; (% > p99) < 15: unaltered enzyme activity; (% > p99) > 15 < 50 altered enzymatic activity; (% > p99) > 50: highly altered; a rate of activity in the presence of propoxur; 1 population with reduced susceptibility to cypermethrin.