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Table 3 Calculated pharmacological values for coronary artery ring constrictor and relaxation response

From: Impact of pulmonary exposure to gold core silver nanoparticles of different size and capping agents on cardiovascular injury

Treatment Group

EC50 (nM)

Hill slope

5-HT

ACh

SNP

5-HT

ACh

SNP

 Naive

87.7 ± 26.7

103.3 ± 28.7

20.0 ± 4.3

1.3 ± 0.1

1.8 ± 0.2

1.1 ± 0.1

1 Day Post IT Exposure

 Citrate

105.9 ± 17.1

75.6 ± 7.4

31.0 ± 5.3

1.3 ± 0.1

1.7 ± 0.1

1.2 ± 0.1

 20 nm AgNP

60.2 ± 8.4

132.8 ± 56.8

22.0 ± 3.4

1.5 ± 0.1

1.5 ± 0.1

1.1 ± 0.1

 110 nm AgNP

75.5 ± 16.3

147.6 ± 51.0

28.1 ± 4.8

1.4 ± 0.1

1.6 ± 0.1

1.1 ± 0.1

 PVP

79.5 ± 11.5

115.7 ± 30.5

20.9 ± 3.4

1.4 ± 0.1

1.7 ± 0.2

1.2 ± 0.1

 20 nm AgNP

95.1 ± 20.1

95.3 ± 3.0

18.9 ± 3.2

1.4 ± 0.1

1.5 ± 0.0

1.2 ± 0.1

 110 nm AgNP

70.0 ± 10.2a

147.6 ± 51.0

23.0 ± 2.4

1.3 ± 0.1

1.8 ± 0.2

1.1 ± 0.1

7 Day Post IT Exposure

 Citrate

799.6 ± 395.9

57.4 ± 1.2

67.1 ± 33.9

1.2 ± 0.4

1.5 ± 0.0

1.0 ± 0.1

 20 nm AgNP

264.2 ± 74.9

112.9 ± 29.0

55.7 ± 8.2

1.1 ± 0.2

1.6 ± 0.2

1.1 ± 0.1

 110 nm AgNP

954.6 ± 80.8

98.3 ± 11.6

59.3 ± 12.5

1.1 ± 0.2

1.9 ± 0.1

1.3 ± 0.3

 PVP

237.7 ± 61.1

89.2 ± 25.9

48.8 ± 3.6

1.1 ± 0.2

1.6 ± 0.3

1.2 ± 0.1

 20 nm AgNP

140.8 ± 31.3

117.5 ± 26.3

41.0 ± 3.6

1.2 ± 0.2

1.5 ± 0.1

1.0 ± 0.1

 110 nm AgNP

306.0 ± 70.3a

110.2 ± 39.4

50.7 ± 13.3

1.1 ± 0.2

1.6 ± 0.2

1.2 ± 0.1

  1. The calculated mean EC50 and Hill slope, responses of LAD coronary artery segment to serotonin (5-HT), acetylcholine (ACh), and sodium nitroprusside (SNP) 1 day and 7 days following 200 μl instillation of Citrate or PVP vehicle or 200 μg 20 or 110 nm AgNP. Values expressed mean ± SEM. adenotes significant versus Naïve (p < 0.05) calculated by one-way ANOVA with Tukey Post Hoc test, n = 3–8