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. 2012 Oct 26;131(2):596–611. doi: 10.1093/toxsci/kfs312

TABLE 2.

Inflammatory Bronchoalveolar Lavage Cells

Parameter Exposurea Descriptorb Inhalation + postinhalation periods (months)c
5 + 0 5 + 4 5 + 8 5 + 13 10 + 0 10 + 4 10 + 8 18 + 0
All cells (× 105) Sham Mean 3.05 2.64 3.70 4.01 2.36 3.09 4.01 4.01
SE 0.24 0.43 0.44 0.46 0.43 0.26 0.46 0.46
MS-150 Mean 3.70 3.90 4.27 4.37 2.85 4.44 4.45 4.57
SE 0.21 0.51 0.35 0.52 0.32 0.52 0.40 0.24
Test *
MS-300 Mean 5.47 4.37 3.34 5.46 3.80 4.41 5.00 6.52
SE 0.32 0.82 0.20 0.37 0.39 0.25 0.38 0.68
Test *# * * *#
Macrophages (× 105) Sham Mean 2.81 2.51 3.50 3.69 2.30 2.93 3.69 3.69
SE 0.24 0.38 0.46 0.41 0.42 0.24 0.41 0.41
MS-150 Mean 2.18 3.68 3.97 3.89 1.80 3.87 3.94 3.22
SE 0.17 0.48 0.32 0.55 0.24 0.40 0.30 0.28
Test
MS-300 Mean 2.42 4.06 2.34 4.24 1.72 2.29 3.07 3.27
SE 0.21 0.81 0.33 0.28 0.15 0.18 0.27 0.39
Test * *
Neutrophils (× 105) Sham Mean 0.011 0.012 0.017 0.040 0.017 0.007 0.040 0.040
SE 0.003 0.006 0.005 0.019 0.003 0.003 0.019 0.019
MS-150 Mean 0.782 0.032 0.019 0.032 0.424 0.096 0.066 0.380
SE 0.070 0.010 0.003 0.013 0.063 0.036 0.026 0.075
Test * * * * *
MS-300 Mean 1.798 0.225 0.177 0.141 1.244 0.756 0.377 2.106
SE 0.104 0.040 0.049 0.050 0.168 0.100 0.053 0.264
Test *# *# *# *# *# *# *# *#
Lymphocytes (× 105) Sham Mean 0.23 0.12 0.18 0.28 0.04 0.14 0.28 0.28
SE 0.10 0.08 0.11 0.09 0.01 0.06 0.09 0.09
MS-150 Mean 0.74 0.19 0.28 0.44 0.63 0.47 0.44 0.97
SE 0.09 0.06 0.10 0.11 0.09 0.13 0.09 0.13
Test * * *
MS-300 Mean 1.25 0.52 0.82 1.07 0.84 1.34 1.55 1.13
SE 0.13 0.06 0.16 0.21 0.13 0.11 0.21 0.15
Test *# *# *# *# * *# *# *
Eosinophils (× 103) Sham Mean 0.015 0.028 0.151 0.344 0.049 0.381 0.344 0.344
SE 0.006 0.009 0.080 0.322 0.032 0.299 0.322 0.322
MS-150 Mean 0.051 0.204 0.072 0.560 0.261 0.473 0.046 0.106
SE 0.014 0.122 0.029 0.356 0.133 0.236 0.021 0.023
Test *
MS-300 Mean 0.126 0.142 0.184 0.190 0.278 1.787 0.699 0.412
SE 0.032 0.063 0.073 0.079 0.065 0.982 0.354 0.164
Test * * * *

Note. The sham-exposed mice for the 5 + 13, 10 + 8, and 18 + 0 months of exposure regimens are the same; 6 to 10 mice per group.

aMS-150 and MS-300: MS at target concentrations of 150 and 300mg TPM/m3, respectively.

bTest: Symbols * and # represent statistically significant difference to sham-exposed or MS-150–exposed mice, respectively.

cData obtained from lavages at regimens 0 and 2.5 + 0 months could not be integrated due to changes in lavaging techniques.