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char = k;code = 107
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char = .;code = 46
result sql = Effects on sister chromatid exchange frequency of aldehyde dehydrogenase 2 genotype and smoking in vinyl chloride workers.
Effects on sister chromatid exchange frequency of aldehyde dehydrogenase 2 genotype and smoking in vinyl chloride workers.
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char = y;code = 121
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char = h;code = 104
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char = e;code = 101
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char = P;code = 80
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char = 5;code = 53
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char = 1;code = 49
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char = 2;code = 50
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char = ,;code = 44
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char = L;code = 76
char = D;code = 68
char = H;code = 72
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char = a;code = 97
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char = ;code = 32
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char = t;code = 116
char = a;code = 97
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char = o;code = 111
char = n;code = 110
char = e;code = 101
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char = S;code = 83
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char = r;code = 114
char = a;code = 97
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char = s;code = 115
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char = a;code = 97
char = s;code = 115
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = (;code = 40
char = G;code = 71
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char = T;code = 84
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char = .;code = 46
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char = t;code = 116
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char = i;code = 105
char = c;code = 99
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char = n;code = 110
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char = y;code = 121
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char = ;code = 32
char = a;code = 97
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char = t;code = 116
char = e;code = 101
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char = e;code = 101
char = d;code = 100
char = ;code = 32
char = r;code = 114
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char = s;code = 115
char = k;code = 107
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
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char = e;code = 101
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char = o;code = 111
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char = c;code = 99
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char = y;code = 121
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char = ;code = 32
char = T;code = 84
char = h;code = 104
char = i;code = 105
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char = ;code = 32
char = s;code = 115
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char = t;code = 116
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char = k;code = 107
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char = r;code = 114
char = s;code = 115
char = ;code = 32
char = m;code = 109
char = i;code = 105
char = g;code = 103
char = h;code = 104
char = t;code = 116
char = ;code = 32
char = a;code = 97
char = f;code = 102
char = f;code = 102
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char = c;code = 99
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char = ;code = 32
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char = M;code = 77
char = 1;code = 49
char = ,;code = 44
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char = S;code = 83
char = T;code = 84
char = T;code = 84
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char = e;code = 101
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char = d;code = 100
char = e;code = 101
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char = t;code = 116
char = i;code = 105
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char = i;code = 105
char = e;code = 101
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char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
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char = h;code = 104
char = e;code = 101
char = ;code = 32
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char = e;code = 101
char = a;code = 97
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char = t;code = 116
char = i;code = 105
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char = ;code = 32
char = (;code = 40
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char = C;code = 67
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char = .;code = 46
char = ;code = 32
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char = a;code = 97
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char = t;code = 116
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char = t;code = 116
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char = s;code = 115
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char = d;code = 100
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char = x;code = 120
char = p;code = 112
char = o;code = 111
char = s;code = 115
char = u;code = 117
char = r;code = 114
char = e;code = 101
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char = o;code = 111
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char = a;code = 97
char = n;code = 110
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char = l;code = 108
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char = a;code = 97
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char = s;code = 115
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char = a;code = 97
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char = e;code = 101
char = d;code = 100
char = ;code = 32
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char = t;code = 116
char = h;code = 104
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char = e;code = 101
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char = S;code = 83
char = C;code = 67
char = E;code = 69
char = ;code = 32
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char = e;code = 101
char = q;code = 113
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char = e;code = 101
char = n;code = 110
char = c;code = 99
char = y;code = 121
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
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char = ;code = 32
char = p;code = 112
char = r;code = 114
char = e;code = 101
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char = e;code = 101
char = n;code = 110
char = c;code = 99
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char = o;code = 111
char = f;code = 102
char = ;code = 32
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char = L;code = 76
char = D;code = 68
char = H;code = 72
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char = 2;code = 50
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char = 2;code = 50
char = -;code = 45
char = 2;code = 50
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char = g;code = 103
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char = n;code = 110
char = o;code = 111
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char = a;code = 97
char = s;code = 115
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char = l;code = 108
char = s;code = 115
char = o;code = 111
char = ;code = 32
char = s;code = 115
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char = g;code = 103
char = n;code = 110
char = i;code = 105
char = f;code = 102
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = l;code = 108
char = y;code = 121
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char = s;code = 115
char = s;code = 115
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char = c;code = 99
char = i;code = 105
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = e;code = 101
char = l;code = 108
char = e;code = 101
char = v;code = 118
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = S;code = 83
char = C;code = 67
char = E;code = 69
char = ;code = 32
char = f;code = 102
char = r;code = 114
char = e;code = 101
char = q;code = 113
char = u;code = 117
char = e;code = 101
char = n;code = 110
char = c;code = 99
char = y;code = 121
char = ;code = 32
char = (;code = 40
char = 9;code = 57
char = .;code = 46
char = ;code = 32
char = 5;code = 53
char = ;code = 32
char = v;code = 118
char = s;code = 115
char = .;code = 46
char = ;code = 32
char = 8;code = 56
char = .;code = 46
char = 1;code = 49
char = ,;code = 44
char = ;code = 32
char = p;code = 112
char = <;code = 60
char = 0;code = 48
char = .;code = 46
char = 0;code = 48
char = 1;code = 49
char = );code = 41
char = .;code = 46
char = ;code = 32
char = H;code = 72
char = o;code = 111
char = w;code = 119
char = e;code = 101
char = v;code = 118
char = e;code = 101
char = r;code = 114
char = ,;code = 44
char = ;code = 32
char = C;code = 67
char = Y;code = 89
char = P;code = 80
char = 2;code = 50
char = E;code = 69
char = 1;code = 49
char = ,;code = 44
char = ;code = 32
char = G;code = 71
char = S;code = 83
char = T;code = 84
char = M;code = 77
char = 1;code = 49
char = ;code = 32
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = G;code = 71
char = S;code = 83
char = T;code = 84
char = T;code = 84
char = 1;code = 49
char = ;code = 32
char = g;code = 103
char = e;code = 101
char = n;code = 110
char = o;code = 111
char = t;code = 116
char = y;code = 121
char = p;code = 112
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = w;code = 119
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = n;code = 110
char = o;code = 111
char = t;code = 116
char = ;code = 32
char = s;code = 115
char = i;code = 105
char = g;code = 103
char = n;code = 110
char = i;code = 105
char = f;code = 102
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = l;code = 108
char = y;code = 121
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = s;code = 115
char = o;code = 111
char = c;code = 99
char = i;code = 105
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = S;code = 83
char = C;code = 67
char = E;code = 69
char = ;code = 32
char = f;code = 102
char = r;code = 114
char = e;code = 101
char = q;code = 113
char = u;code = 117
char = e;code = 101
char = n;code = 110
char = c;code = 99
char = y;code = 121
char = .;code = 46
char = ;code = 32
char = W;code = 87
char = h;code = 104
char = e;code = 101
char = n;code = 110
char = ;code = 32
char = v;code = 118
char = a;code = 97
char = r;code = 114
char = i;code = 105
char = o;code = 111
char = u;code = 117
char = s;code = 115
char = ;code = 32
char = g;code = 103
char = e;code = 101
char = n;code = 110
char = o;code = 111
char = t;code = 116
char = y;code = 121
char = p;code = 112
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = w;code = 119
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = g;code = 103
char = e;code = 101
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = r;code = 114
char = ,;code = 44
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = m;code = 109
char = b;code = 98
char = i;code = 105
char = n;code = 110
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = C;code = 67
char = Y;code = 89
char = P;code = 80
char = 2;code = 50
char = E;code = 69
char = 1;code = 49
char = ;code = 32
char = c;code = 99
char = 1;code = 49
char = c;code = 99
char = 2;code = 50
char = /;code = 47
char = c;code = 99
char = 2;code = 50
char = c;code = 99
char = 2;code = 50
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = A;code = 65
char = L;code = 76
char = D;code = 68
char = H;code = 72
char = 2;code = 50
char = ;code = 32
char = 1;code = 49
char = -;code = 45
char = 2;code = 50
char = /;code = 47
char = 2;code = 50
char = -;code = 45
char = 2;code = 50
char = ;code = 32
char = s;code = 115
char = h;code = 104
char = o;code = 111
char = w;code = 119
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = d;code = 100
char = d;code = 100
char = i;code = 105
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = e;code = 101
char = ;code = 32
char = e;code = 101
char = f;code = 102
char = f;code = 102
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = ;code = 32
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = S;code = 83
char = C;code = 67
char = E;code = 69
char = ;code = 32
char = f;code = 102
char = r;code = 114
char = e;code = 101
char = q;code = 113
char = u;code = 117
char = e;code = 101
char = n;code = 110
char = c;code = 99
char = y;code = 121
char = .;code = 46
char = ;code = 32
char = S;code = 83
char = i;code = 105
char = m;code = 109
char = i;code = 105
char = l;code = 108
char = a;code = 97
char = r;code = 114
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = u;code = 117
char = l;code = 108
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = w;code = 119
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = l;code = 108
char = s;code = 115
char = o;code = 111
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = u;code = 117
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = m;code = 109
char = b;code = 98
char = i;code = 105
char = n;code = 110
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = s;code = 115
char = m;code = 109
char = o;code = 111
char = k;code = 107
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = C;code = 67
char = Y;code = 89
char = P;code = 80
char = 2;code = 50
char = E;code = 69
char = 1;code = 49
char = ,;code = 44
char = ;code = 32
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = s;code = 115
char = m;code = 109
char = o;code = 111
char = k;code = 107
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = A;code = 65
char = L;code = 76
char = D;code = 68
char = H;code = 72
char = 2;code = 50
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = e;code = 101
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = u;code = 117
char = l;code = 108
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = s;code = 115
char = u;code = 117
char = g;code = 103
char = g;code = 103
char = e;code = 101
char = s;code = 115
char = t;code = 116
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = t;code = 116
char = ;code = 32
char = V;code = 86
char = C;code = 67
char = M;code = 77
char = ;code = 32
char = w;code = 119
char = o;code = 111
char = r;code = 114
char = k;code = 107
char = e;code = 101
char = r;code = 114
char = s;code = 115
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = A;code = 65
char = L;code = 76
char = D;code = 68
char = H;code = 72
char = 2;code = 50
char = ;code = 32
char = 1;code = 49
char = -;code = 45
char = 2;code = 50
char = /;code = 47
char = 2;code = 50
char = -;code = 45
char = 2;code = 50
char = ;code = 32
char = g;code = 103
char = e;code = 101
char = n;code = 110
char = o;code = 111
char = t;code = 116
char = y;code = 121
char = p;code = 112
char = e;code = 101
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = w;code = 119
char = h;code = 104
char = o;code = 111
char = ;code = 32
char = a;code = 97
char = l;code = 108
char = s;code = 115
char = o;code = 111
char = ;code = 32
char = s;code = 115
char = m;code = 109
char = o;code = 111
char = k;code = 107
char = e;code = 101
char = ,;code = 44
char = ;code = 32
char = m;code = 109
char = a;code = 97
char = y;code = 121
char = ;code = 32
char = h;code = 104
char = a;code = 97
char = v;code = 118
char = e;code = 101
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = c;code = 99
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = r;code = 114
char = i;code = 105
char = s;code = 115
char = k;code = 107
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = D;code = 68
char = N;code = 78
char = A;code = 65
char = ;code = 32
char = d;code = 100
char = a;code = 97
char = m;code = 109
char = a;code = 97
char = g;code = 103
char = e;code = 101
char = .;code = 46
char = <;code = 60
char = b;code = 98
char = r;code = 114
char = /;code = 47
char = >;code = 62
result sql = Vinyl chloride monomer (VCM) is a human carcinogen. However, the exact mechanism of carcinogenesis remains unclear. VCM may be metabolized by cytochrome P450 2E1 (CYP2E1), aldehyde dehydrogenase 2 (ALDH2) and glutathione S-transferases (GSTs). Thus workers with inherited variant metabolic enzyme activities may have an altered risk of genotoxicity. This study was designed to investigate which risk factors might affect sister chromatid exchange (SCE) frequency in polyvinyl chloride (PVC) workers. Study subjects were 44 male workers from three PVC factories. Questionnaires were administered to obtain detailed histories of cigarette smoking, alcohol consumption, occupations, and medications. SCE frequency in peripheral lymphocytes was determined using a standardized method, and CYP2E1, GSTM1, GSTT1 and ALDH2 genotypes were identified by the polymerase chain reaction (PCR). Analysis revealed that smoking status and exposure to VCM were significantly associated with increased SCE frequency. The presence of ALDH2 1-2/2-2 genotypes was also significantly associated with an elevation of SCE frequency (9. 5 vs. 8.1, p<0.01). However, CYP2E1, GSTM1 or GSTT1 genotypes were not significantly associated with SCE frequency. When various genotypes were considered together, combination of CYP2E1 c1c2/c2c2 with ALDH2 1-2/2-2 showed an additive effect on SCE frequency. Similar results were also found for the combination of smoking with CYP2E1, or smoking with ALDH2. These results suggest that VCM workers with ALDH2 1-2/2-2 genotypes, who also smoke, may have increased risk of DNA damage.

Publication: Mutat. Res. 1998 Dec 3 ;420(1-3)::99-107.
Publication Date: 1998 Dec 3
Study Author(s): Wong, R H;Wang, J D;Hsieh, L L;Du, C L;Cheng, T J;
Institution: Graduate Institute of Occupational Medicine and Industrial Hygiene, National Taiwan University, College of Public Health, Taipei, Taiwan.
Shortcut link to this study:
Vinyl chloride monomer (VCM) is a human carcinogen. However, the exact mechanism of carcinogenesis remains unclear. VCM may be metabolized by cytochrome P450 2E1 (CYP2E1), aldehyde dehydrogenase 2 (ALDH2) and glutathione S-transferases (GSTs). Thus workers with inherited variant metabolic enzyme activities may have an altered risk of genotoxicity. This study was designed to investigate which risk factors might affect sister chromatid exchange (SCE) frequency in polyvinyl chloride (PVC) workers. Study subjects were 44 male workers from three PVC factories. Questionnaires were administered to obtain detailed histories of cigarette smoking, alcohol consumption, occupations, and medications. SCE frequency in peripheral lymphocytes was determined using a standardized method, and CYP2E1, GSTM1, GSTT1 and ALDH2 genotypes were identified by the polymerase chain reaction (PCR). Analysis revealed that smoking status and exposure to VCM were significantly associated with increased SCE frequency. The presence of ALDH2 1-2/2-2 genotypes was also significantly associated with an elevation of SCE frequency (9. 5 vs. 8.1, p<0.01). However, CYP2E1, GSTM1 or GSTT1 genotypes were not significantly associated with SCE frequency. When various genotypes were considered together, combination of CYP2E1 c1c2/c2c2 with ALDH2 1-2/2-2 showed an additive effect on SCE frequency. Similar results were also found for the combination of smoking with CYP2E1, or smoking with ALDH2. These results suggest that VCM workers with ALDH2 1-2/2-2 genotypes, who also smoke, may have increased risk of DNA damage.
PMID: 9838066

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