char = R;code = 82 char = e;code = 101 char = p;code = 112 char = e;code = 101 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = c;code = 99 char = a;code = 97 char = d;code = 100 char = m;code = 109 char = i;code = 105 char = u;code = 117 char = m;code = 109 char = ;code = 32 char = n;code = 110 char = e;code = 101 char = b;code = 98 char = u;code = 117 char = l;code = 108 char = i;code = 105 char = z;code = 122 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = s;code = 115 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = d;code = 100 char = u;code = 117 char = c;code = 99 char = e;code = 101 char = ;code = 32 char = p;code = 112 char = u;code = 117 char = l;code = 108 char = m;code = 109 char = o;code = 111 char = n;code = 110 char = a;code = 97 char = r;code = 114 char = y;code = 121 char = ;code = 32 char = M;code = 77 char = M;code = 77 char = P;code = 80 char = -;code = 45 char = 2;code = 50 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = M;code = 77 char = M;code = 77 char = P;code = 80 char = -;code = 45 char = 9;code = 57 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = o;code = 111 char = d;code = 100 char = u;code = 117 char = c;code = 99 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = e;code = 101 char = m;code = 109 char = p;code = 112 char = h;code = 104 char = y;code = 121 char = s;code = 115 char = e;code = 101 char = m;code = 109 char = a;code = 97 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = r;code = 114 char = a;code = 97 char = t;code = 116 char = s;code = 115 char = .;code = 46 result sql = Repeated cadmium nebulizations induce pulmonary MMP-2 and MMP-9 production and emphysema in rats.
Repeated cadmium nebulizations induce pulmonary MMP-2 and MMP-9 production and emphysema in rats.char = T;code = 84 char = h;code = 104 char = i;code = 105 char = s;code = 115 char = ;code = 32 char = s;code = 115 char = t;code = 116 char = u;code = 117 char = d;code = 100 char = y;code = 121 char = ;code = 32 char = d;code = 100 char = e;code = 101 char = s;code = 115 char = c;code = 99 char = r;code = 114 char = i;code = 105 char = b;code = 98 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = d;code = 100 char = u;code = 117 char = c;code = 99 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 = p;code = 112 char = u;code = 117 char = l;code = 108 char = m;code = 109 char = o;code = 111 char = n;code = 110 char = a;code = 97 char = r;code = 114 char = y;code = 121 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = f;code = 102 char = l;code = 108 char = a;code = 97 char = m;code = 109 char = m;code = 109 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ,;code = 44 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = o;code = 111 char = d;code = 100 char = u;code = 117 char = c;code = 99 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 = m;code = 109 char = a;code = 97 char = t;code = 116 char = r;code = 114 char = i;code = 105 char = x;code = 120 char = ;code = 32 char = m;code = 109 char = e;code = 101 char = t;code = 116 char = a;code = 97 char = l;code = 108 char = l;code = 108 char = o;code = 111 char = p;code = 112 char = r;code = 114 char = o;code = 111 char = t;code = 116 char = e;code = 101 char = a;code = 97 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = t;code = 116 char = y;code = 121 char = p;code = 112 char = e;code = 101 char = ;code = 32 char = 2;code = 50 char = ;code = 32 char = (;code = 40 char = M;code = 77 char = M;code = 77 char = P;code = 80 char = -;code = 45 char = 2;code = 50 char = );code = 41 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = t;code = 116 char = y;code = 121 char = p;code = 112 char = e;code = 101 char = ;code = 32 char = 9;code = 57 char = ;code = 32 char = (;code = 40 char = M;code = 77 char = M;code = 77 char = P;code = 80 char = -;code = 45 char = 9;code = 57 char = );code = 41 char = ,;code = 44 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = e;code = 101 char = m;code = 109 char = p;code = 112 char = h;code = 104 char = y;code = 121 char = s;code = 115 char = e;code = 101 char = m;code = 109 char = a;code = 97 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = c;code = 99 char = a;code = 97 char = d;code = 100 char = m;code = 109 char = i;code = 105 char = u;code = 117 char = m;code = 109 char = ;code = 32 char = (;code = 40 char = C;code = 67 char = d;code = 100 char = );code = 41 char = -;code = 45 char = e;code = 101 char = x;code = 120 char = p;code = 112 char = o;code = 111 char = s;code = 115 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = r;code = 114 char = a;code = 97 char = t;code = 116 char = s;code = 115 char = .;code = 46 char = ;code = 32 char = <;code = 60 char = b;code = 98 char = >;code = 62 char = S;code = 83 char = P;code = 80 char = R;code = 82 char = A;code = 65 char = G;code = 71 char = U;code = 85 char = E;code = 69 char = -;code = 45 char = D;code = 68 char = A;code = 65 char = W;code = 87 char = L;code = 76 char = E;code = 69 char = Y;code = 89 char = ;code = 32 char = R;code = 82 char = A;code = 65 char = T;code = 84 char = S;code = 83 char = ;code = 32 char = W;code = 87 char = E;code = 69 char = R;code = 82 char = E;code = 69 char = ;code = 32 char = R;code = 82 char = A;code = 65 char = N;code = 78 char = D;code = 68 char = O;code = 79 char = M;code = 77 char = L;code = 76 char = Y;code = 89 char = ;code = 32 char = D;code = 68 char = I;code = 73 char = S;code = 83 char = T;code = 84 char = R;code = 82 char = I;code = 73 char = B;code = 66 char = U;code = 85 char = T;code = 84 char = E;code = 69 char = D;code = 68 char = ;code = 32 char = I;code = 73 char = N;code = 78 char = T;code = 84 char = O;code = 79 char = ;code = 32 char = T;code = 84 char = W;code = 87 char = O;code = 79 char = ;code = 32 char = G;code = 71 char = R;code = 82 char = O;code = 79 char = U;code = 85 char = P;code = 80 char = S;code = 83 char = :;code = 58 char = ;code = 32 char = <;code = 60 char = /;code = 47 char = b;code = 98 char = >;code = 62 char = ;code = 32 char = o;code = 111 char = n;code = 110 char = e;code = 101 char = ;code = 32 char = p;code = 112 char = l;code = 108 char = a;code = 97 char = c;code = 99 char = e;code = 101 char = b;code = 98 char = o;code = 111 char = -;code = 45 char = e;code = 101 char = x;code = 120 char = p;code = 112 char = o;code = 111 char = s;code = 115 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = g;code = 103 char = r;code = 114 char = o;code = 111 char = u;code = 117 char = p;code = 112 char = ;code = 32 char = u;code = 117 char = n;code = 110 char = d;code = 100 char = e;code = 101 char = r;code = 114 char = g;code = 103 char = o;code = 111 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = s;code = 115 char = a;code = 97 char = l;code = 108 char = i;code = 105 char = n;code = 110 char = e;code = 101 char = ;code = 32 char = (;code = 40 char = N;code = 78 char = a;code = 97 char = C;code = 67 char = l;code = 108 char = ;code = 32 char = 0;code = 48 char = .;code = 46 char = 9;code = 57 char = %;code = 37 char = );code = 41 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = h;code = 104 char = a;code = 97 char = l;code = 108 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = (;code = 40 char = n;code = 110 char = =;code = 61 char = 3;code = 51 char = 0;code = 48 char = );code = 41 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = o;code = 111 char = n;code = 110 char = e;code = 101 char = ;code = 32 char = C;code = 67 char = d;code = 100 char = -;code = 45 char = e;code = 101 char = x;code = 120 char = p;code = 112 char = o;code = 111 char = s;code = 115 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = g;code = 103 char = r;code = 114 char = o;code = 111 char = u;code = 117 char = p;code = 112 char = ;code = 32 char = u;code = 117 char = n;code = 110 char = d;code = 100 char = e;code = 101 char = r;code = 114 char = g;code = 103 char = o;code = 111 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = c;code = 99 char = a;code = 97 char = d;code = 100 char = m;code = 109 char = i;code = 105 char = u;code = 117 char = m;code = 109 char = ;code = 32 char = (;code = 40 char = C;code = 67 char = d;code = 100 char = C;code = 67 char = l;code = 108 char = (;code = 40 char = 2;code = 50 char = );code = 41 char = ;code = 32 char = 0;code = 48 char = .;code = 46 char = 1;code = 49 char = %;code = 37 char = );code = 41 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = h;code = 104 char = a;code = 97 char = l;code = 108 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = (;code = 40 char = n;code = 110 char = =;code = 61 char = 3;code = 51 char = 0;code = 48 char = );code = 41 char = .;code = 46 char = ;code = 32 char = T;code = 84 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = i;code = 105 char = m;code = 109 char = a;code = 97 char = l;code = 108 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = p;code = 112 char = l;code = 108 char = a;code = 97 char = c;code = 99 char = e;code = 101 char = b;code = 98 char = o;code = 111 char = -;code = 45 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = C;code = 67 char = d;code = 100 char = -;code = 45 char = e;code = 101 char = x;code = 120 char = p;code = 112 char = o;code = 111 char = s;code = 115 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = g;code = 103 char = r;code = 114 char = o;code = 111 char = u;code = 117 char = p;code = 112 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 = d;code = 100 char = i;code = 105 char = v;code = 118 char = i;code = 105 char = d;code = 100 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = f;code = 102 char = i;code = 105 char = v;code = 118 char = e;code = 101 char = ;code = 32 char = s;code = 115 char = u;code = 117 char = b;code = 98 char = g;code = 103 char = r;code = 114 char = o;code = 111 char = u;code = 117 char = p;code = 112 char = s;code = 115 char = ;code = 32 char = (;code = 40 char = n;code = 110 char = =;code = 61 char = 6;code = 54 char = );code = 41 char = .;code = 46 char = ;code = 32 char = S;code = 83 char = u;code = 117 char = b;code = 98 char = g;code = 103 char = r;code = 114 char = o;code = 111 char = u;code = 117 char = p;code = 112 char = s;code = 115 char = ;code = 32 char = u;code = 117 char = n;code = 110 char = d;code = 100 char = e;code = 101 char = r;code = 114 char = w;code = 119 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = ;code = 32 char = e;code = 101 char = i;code = 105 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = s;code = 115 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = l;code = 108 char = e;code = 101 char = ;code = 32 char = e;code = 101 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 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = 1;code = 49 char = h;code = 104 char = ;code = 32 char = o;code = 111 char = r;code = 114 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = p;code = 112 char = e;code = 101 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = e;code = 101 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 char = s;code = 115 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = r;code = 114 char = e;code = 101 char = e;code = 101 char = ;code = 32 char = t;code = 116 char = i;code = 105 char = m;code = 109 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = w;code = 119 char = e;code = 101 char = e;code = 101 char = k;code = 107 char = l;code = 108 char = y;code = 121 char = ;code = 32 char = f;code = 102 char = o;code = 111 char = r;code = 114 char = ;code = 32 char = 1;code = 49 char = h;code = 104 char = ;code = 32 char = d;code = 100 char = u;code = 117 char = r;code = 114 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = 3;code = 51 char = ;code = 32 char = w;code = 119 char = e;code = 101 char = e;code = 101 char = k;code = 107 char = s;code = 115 char = ;code = 32 char = (;code = 40 char = 3;code = 51 char = W;code = 87 char = );code = 41 char = ,;code = 44 char = ;code = 32 char = 5;code = 53 char = ;code = 32 char = w;code = 119 char = e;code = 101 char = e;code = 101 char = k;code = 107 char = s;code = 115 char = ;code = 32 char = (;code = 40 char = 5;code = 53 char = W;code = 87 char = );code = 41 char = ,;code = 44 char = ;code = 32 char = 5;code = 53 char = ;code = 32 char = w;code = 119 char = e;code = 101 char = e;code = 101 char = k;code = 107 char = s;code = 115 char = ;code = 32 char = f;code = 102 char = o;code = 111 char = l;code = 108 char = l;code = 108 char = o;code = 111 char = w;code = 119 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = b;code = 98 char = y;code = 121 char = ;code = 32 char = 2;code = 50 char = ;code = 32 char = w;code = 119 char = e;code = 101 char = e;code = 101 char = k;code = 107 char = s;code = 115 char = ;code = 32 char = w;code = 119 char = i;code = 105 char = t;code = 116 char = h;code = 104 char = o;code = 111 char = u;code = 117 char = t;code = 116 char = ;code = 32 char = e;code = 101 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 char = ;code = 32 char = (;code = 40 char = 5;code = 53 char = W;code = 87 char = +;code = 43 char = 2;code = 50 char = );code = 41 char = ;code = 32 char = o;code = 111 char = r;code = 114 char = ;code = 32 char = 5;code = 53 char = ;code = 32 char = w;code = 119 char = e;code = 101 char = e;code = 101 char = k;code = 107 char = s;code = 115 char = ;code = 32 char = f;code = 102 char = o;code = 111 char = l;code = 108 char = l;code = 108 char = o;code = 111 char = w;code = 119 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = b;code = 98 char = y;code = 121 char = ;code = 32 char = 4;code = 52 char = ;code = 32 char = w;code = 119 char = e;code = 101 char = e;code = 101 char = k;code = 107 char = s;code = 115 char = ;code = 32 char = w;code = 119 char = i;code = 105 char = t;code = 116 char = h;code = 104 char = o;code = 111 char = u;code = 117 char = t;code = 116 char = ;code = 32 char = e;code = 101 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 char = ;code = 32 char = (;code = 40 char = 5;code = 53 char = W;code = 87 char = +;code = 43 char = 4;code = 52 char = );code = 41 char = .;code = 46 char = ;code = 32 char = E;code = 69 char = a;code = 97 char = c;code = 99 char = h;code = 104 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = i;code = 105 char = m;code = 109 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = u;code = 117 char = n;code = 110 char = d;code = 100 char = e;code = 101 char = r;code = 114 char = w;code = 119 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = ;code = 32 char = d;code = 100 char = e;code = 101 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = m;code = 109 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 = e;code = 101 char = n;code = 110 char = h;code = 104 char = a;code = 97 char = n;code = 110 char = c;code = 99 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = p;code = 112 char = a;code = 97 char = u;code = 117 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = (;code = 40 char = P;code = 80 char = e;code = 101 char = n;code = 110 char = h;code = 104 char = );code = 41 char = ;code = 32 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = d;code = 100 char = e;code = 101 char = x;code = 120 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = a;code = 97 char = i;code = 105 char = r;code = 114 char = f;code = 102 char = l;code = 108 char = o;code = 111 char = w;code = 119 char = ;code = 32 char = l;code = 108 char = i;code = 105 char = m;code = 109 char = i;code = 105 char = t;code = 116 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = i;code = 105 char = o;code = 111 char = r;code = 114 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = f;code = 102 char = i;code = 105 char = r;code = 114 char = s;code = 115 char = t;code = 116 char = ;code = 32 char = e;code = 101 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 char = ;code = 32 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = w;code = 119 char = e;code = 101 char = l;code = 108 char = l;code = 108 char = ;code = 32 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = b;code = 98 char = e;code = 101 char = f;code = 102 char = o;code = 111 char = r;code = 114 char = e;code = 101 char = ;code = 32 char = s;code = 115 char = a;code = 97 char = c;code = 99 char = r;code = 114 char = i;code = 105 char = f;code = 102 char = i;code = 105 char = c;code = 99 char = e;code = 101 char = .;code = 46 char = ;code = 32 char = T;code = 84 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = i;code = 105 char = m;code = 109 char = a;code = 97 char = l;code = 108 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 = s;code = 115 char = a;code = 97 char = c;code = 99 char = r;code = 114 char = i;code = 105 char = f;code = 102 char = i;code = 105 char = c;code = 99 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = d;code = 100 char = a;code = 97 char = y;code = 121 char = ;code = 32 char = a;code = 97 char = f;code = 102 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = i;code = 105 char = r;code = 114 char = ;code = 32 char = l;code = 108 char = a;code = 97 char = s;code = 115 char = t;code = 116 char = ;code = 32 char = e;code = 101 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 char = .;code = 46 char = ;code = 32 char = T;code = 84 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = l;code = 108 char = e;code = 101 char = f;code = 102 char = t;code = 116 char = ;code = 32 char = l;code = 108 char = u;code = 117 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = w;code = 119 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = f;code = 102 char = i;code = 105 char = x;code = 120 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = f;code = 102 char = o;code = 111 char = r;code = 114 char = ;code = 32 char = h;code = 104 char = i;code = 105 char = s;code = 115 char = t;code = 116 char = o;code = 111 char = m;code = 109 char = o;code = 111 char = r;code = 114 char = p;code = 112 char = h;code = 104 char = o;code = 111 char = m;code = 109 char = e;code = 101 char = t;code = 116 char = r;code = 114 char = i;code = 105 char = c;code = 99 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = a;code = 97 char = l;code = 108 char = y;code = 121 char = s;code = 115 char = i;code = 105 char = s;code = 115 char = ;code = 32 char = (;code = 40 char = d;code = 100 char = e;code = 101 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = m;code = 109 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 = m;code = 109 char = e;code = 101 char = d;code = 100 char = i;code = 105 char = a;code = 97 char = n;code = 110 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = w;code = 119 char = a;code = 97 char = l;code = 108 char = l;code = 108 char = ;code = 32 char = d;code = 100 char = i;code = 105 char = s;code = 115 char = t;code = 116 char = a;code = 97 char = n;code = 110 char = c;code = 99 char = e;code = 101 char = ;code = 32 char = (;code = 40 char = M;code = 77 char = I;code = 73 char = W;code = 87 char = D;code = 68 char = );code = 41 char = );code = 41 char = ,;code = 44 char = ;code = 32 char = w;code = 119 char = h;code = 104 char = i;code = 105 char = l;code = 108 char = s;code = 115 char = t;code = 116 char = ;code = 32 char = b;code = 98 char = r;code = 114 char = o;code = 111 char = n;code = 110 char = c;code = 99 char = h;code = 104 char = o;code = 111 char = a;code = 97 char = l;code = 108 char = v;code = 118 char = e;code = 101 char = o;code = 111 char = l;code = 108 char = a;code = 97 char = r;code = 114 char = ;code = 32 char = l;code = 108 char = a;code = 97 char = v;code = 118 char = a;code = 97 char = g;code = 103 char = e;code = 101 char = ;code = 32 char = f;code = 102 char = l;code = 108 char = u;code = 117 char = i;code = 105 char = d;code = 100 char = ;code = 32 char = (;code = 40 char = B;code = 66 char = A;code = 65 char = L;code = 76 char = F;code = 70 char = );code = 41 char = ;code = 32 char = w;code = 119 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = l;code = 108 char = l;code = 108 char = e;code = 101 char = c;code = 99 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = f;code = 102 char = r;code = 114 char = o;code = 111 char = m;code = 109 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = r;code = 114 char = i;code = 105 char = g;code = 103 char = h;code = 104 char = t;code = 116 char = ;code = 32 char = l;code = 108 char = u;code = 117 char = n;code = 110 char = g;code = 103 char = .;code = 46 char = ;code = 32 char = B;code = 66 char = A;code = 65 char = L;code = 76 char = F;code = 70 char = ;code = 32 char = w;code = 119 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = a;code = 97 char = l;code = 108 char = y;code = 121 char = z;code = 122 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = c;code = 99 char = y;code = 121 char = t;code = 116 char = o;code = 111 char = l;code = 108 char = o;code = 111 char = g;code = 103 char = i;code = 105 char = c;code = 99 char = a;code = 97 char = l;code = 108 char = l;code = 108 char = y;code = 121 char = ,;code = 44 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = M;code = 77 char = M;code = 77 char = P;code = 80 char = -;code = 45 char = 2;code = 50 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = M;code = 77 char = M;code = 77 char = P;code = 80 char = -;code = 45 char = 9;code = 57 char = ;code = 32 char = l;code = 108 char = e;code = 101 char = v;code = 118 char = e;code = 101 char = l;code = 108 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 = d;code = 100 char = e;code = 101 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = m;code = 109 char = i;code = 105 char = n;code = 110 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = b;code = 98 char = y;code = 121 char = ;code = 32 char = g;code = 103 char = e;code = 101 char = l;code = 108 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = n;code = 110 char = e;code = 101 char = ;code = 32 char = z;code = 122 char = y;code = 121 char = m;code = 109 char = o;code = 111 char = g;code = 103 char = r;code = 114 char = a;code = 97 char = p;code = 112 char = h;code = 104 char = y;code = 121 char = .;code = 46 char = ;code = 32 char = T;code = 84 char = w;code = 119 char = e;code = 101 char = l;code = 108 char = v;code = 118 char = e;code = 101 char = ;code = 32 char = r;code = 114 char = a;code = 97 char = t;code = 116 char = s;code = 115 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = e;code = 101 char = v;code = 118 char = i;code = 105 char = o;code = 111 char = u;code = 117 char = s;code = 115 char = l;code = 108 char = y;code = 121 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = s;code = 115 char = t;code = 116 char = i;code = 105 char = l;code = 108 char = l;code = 108 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 = p;code = 112 char = a;code = 97 char = n;code = 110 char = c;code = 99 char = r;code = 114 char = e;code = 101 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = c;code = 99 char = ;code = 32 char = e;code = 101 char = l;code = 108 char = a;code = 97 char = s;code = 115 char = t;code = 116 char = a;code = 97 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = w;code = 119 char = e;code = 101 char = r;code = 114 char = e;code = 101 char = ;code = 32 char = u;code = 117 char = s;code = 115 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = p;code = 112 char = o;code = 111 char = s;code = 115 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 = m;code = 109 char = p;code = 112 char = h;code = 104 char = y;code = 121 char = s;code = 115 char = e;code = 101 char = m;code = 109 char = a;code = 97 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = n;code = 110 char = t;code = 116 char = r;code = 114 char = o;code = 111 char = l;code = 108 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = u;code = 117 char = n;code = 110 char = d;code = 100 char = e;code = 101 char = r;code = 114 char = w;code = 119 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = s;code = 115 char = a;code = 97 char = m;code = 109 char = e;code = 101 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = v;code = 118 char = e;code = 101 char = s;code = 115 char = t;code = 116 char = i;code = 105 char = g;code = 103 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = s;code = 115 char = .;code = 46 char = ;code = 32 char = C;code = 67 char = d;code = 100 char = -;code = 45 char = e;code = 101 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 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = d;code = 100 char = u;code = 117 char = c;code = 99 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = a;code = 97 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 = ;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 = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = B;code = 66 char = A;code = 65 char = L;code = 76 char = F;code = 70 char = ;code = 32 char = m;code = 109 char = a;code = 97 char = c;code = 99 char = r;code = 114 char = o;code = 111 char = p;code = 112 char = h;code = 104 char = a;code = 97 char = g;code = 103 char = e;code = 101 char = s;code = 115 char = ,;code = 44 char = ;code = 32 char = n;code = 110 char = e;code = 101 char = u;code = 117 char = t;code = 116 char = r;code = 114 char = o;code = 111 char = p;code = 112 char = h;code = 104 char = i;code = 105 char = l;code = 108 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = M;code = 77 char = M;code = 77 char = P;code = 80 char = -;code = 45 char = 9;code = 57 char = ;code = 32 char = u;code = 117 char = p;code = 112 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = 5;code = 53 char = W;code = 87 char = +;code = 43 char = 4;code = 52 char = ,;code = 44 char = ;code = 32 char = w;code = 119 char = h;code = 104 char = e;code = 101 char = r;code = 114 char = e;code = 101 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = M;code = 77 char = M;code = 77 char = P;code = 80 char = -;code = 45 char = 2;code = 50 char = ;code = 32 char = g;code = 103 char = e;code = 101 char = l;code = 108 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = n;code = 110 char = o;code = 111 char = l;code = 108 char = y;code = 121 char = t;code = 116 char = i;code = 105 char = c;code = 99 char = ;code = 32 char = a;code = 97 char = c;code = 99 char = t;code = 116 char = i;code = 105 char = v;code = 118 char = i;code = 105 char = t;code = 116 char = y;code = 121 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = t;code = 116 char = u;code = 117 char = r;code = 114 char = n;code = 110 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = b;code = 98 char = a;code = 97 char = s;code = 115 char = e;code = 101 char = l;code = 108 char = i;code = 105 char = n;code = 110 char = e;code = 101 char = ;code = 32 char = l;code = 108 char = e;code = 101 char = v;code = 118 char = e;code = 101 char = l;code = 108 char = s;code = 115 char = ;code = 32 char = w;code = 119 char = i;code = 105 char = t;code = 116 char = h;code = 104 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = 5;code = 53 char = W;code = 87 char = .;code = 46 char = ;code = 32 char = M;code = 77 char = I;code = 73 char = W;code = 87 char = D;code = 68 char = ;code = 32 char = w;code = 119 char = a;code = 97 char = s;code = 115 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 = 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 = i;code = 105 char = n;code = 110 char = ;code = 32 char = a;code = 97 char = l;code = 108 char = l;code = 108 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = p;code = 112 char = e;code = 101 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = l;code = 108 char = y;code = 121 char = ;code = 32 char = C;code = 67 char = d;code = 100 char = -;code = 45 char = e;code = 101 char = x;code = 120 char = p;code = 112 char = o;code = 111 char = s;code = 115 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = g;code = 103 char = r;code = 114 char = o;code = 111 char = u;code = 117 char = p;code = 112 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = e;code = 101 char = l;code = 108 char = a;code = 97 char = s;code = 115 char = t;code = 116 char = a;code = 97 char = s;code = 115 char = e;code = 101 char = -;code = 45 char = t;code = 116 char = r;code = 114 char = e;code = 101 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = r;code = 114 char = a;code = 97 char = t;code = 116 char = s;code = 115 char = .;code = 46 char = ;code = 32 char = P;code = 80 char = e;code = 101 char = n;code = 110 char = h;code = 104 char = ;code = 32 char = w;code = 119 char = a;code = 97 char = s;code = 115 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 = i;code = 105 char = n;code = 110 char = ;code = 32 char = C;code = 67 char = d;code = 100 char = -;code = 45 char = e;code = 101 char = x;code = 120 char = p;code = 112 char = o;code = 111 char = s;code = 115 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = r;code = 114 char = a;code = 97 char = t;code = 116 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = f;code = 102 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = s;code = 115 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = l;code = 108 char = e;code = 101 char = ;code = 32 char = e;code = 101 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 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = a;code = 97 char = f;code = 102 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = 3;code = 51 char = W;code = 87 char = .;code = 46 char = ;code = 32 char = M;code = 77 char = M;code = 77 char = P;code = 80 char = ;code = 32 char = g;code = 103 char = e;code = 101 char = l;code = 108 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = n;code = 110 char = o;code = 111 char = l;code = 108 char = y;code = 121 char = t;code = 116 char = i;code = 105 char = c;code = 99 char = ;code = 32 char = a;code = 97 char = c;code = 99 char = t;code = 116 char = i;code = 105 char = v;code = 118 char = i;code = 105 char = t;code = 116 char = y;code = 121 char = ;code = 32 char = w;code = 119 char = a;code = 97 char = s;code = 115 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 = c;code = 99 char = o;code = 111 char = r;code = 114 char = r;code = 114 char = e;code = 101 char = l;code = 108 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 = m;code = 109 char = a;code = 97 char = c;code = 99 char = r;code = 114 char = o;code = 111 char = p;code = 112 char = h;code = 104 char = a;code = 97 char = g;code = 103 char = e;code = 101 char = s;code = 115 char = ,;code = 44 char = ;code = 32 char = n;code = 110 char = e;code = 101 char = u;code = 117 char = t;code = 116 char = r;code = 114 char = o;code = 111 char = p;code = 112 char = h;code = 104 char = i;code = 105 char = l;code = 108 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = P;code = 80 char = e;code = 101 char = n;code = 110 char = h;code = 104 char = .;code = 46 char = ;code = 32 char = I;code = 73 char = n;code = 110 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = p;code = 112 char = e;code = 101 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = l;code = 108 char = y;code = 121 char = ;code = 32 char = e;code = 101 char = x;code = 120 char = p;code = 112 char = o;code = 111 char = s;code = 115 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = r;code = 114 char = a;code = 97 char = t;code = 116 char = s;code = 115 char = ,;code = 44 char = ;code = 32 char = M;code = 77 char = I;code = 73 char = W;code = 87 char = D;code = 68 char = ;code = 32 char = w;code = 119 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = p;code = 112 char = o;code = 111 char = s;code = 115 char = i;code = 105 char = t;code = 116 char = i;code = 105 char = v;code = 118 char = e;code = 101 char = l;code = 108 char = y;code = 121 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 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 = c;code = 99 char = o;code = 111 char = r;code = 114 char = r;code = 114 char = e;code = 101 char = l;code = 108 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 = M;code = 77 char = M;code = 77 char = P;code = 80 char = ;code = 32 char = g;code = 103 char = e;code = 101 char = l;code = 108 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = n;code = 110 char = o;code = 111 char = l;code = 108 char = y;code = 121 char = t;code = 116 char = i;code = 105 char = c;code = 99 char = ;code = 32 char = a;code = 97 char = c;code = 99 char = t;code = 116 char = i;code = 105 char = v;code = 118 char = i;code = 105 char = t;code = 116 char = y;code = 121 char = ,;code = 44 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 = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = a;code = 97 char = t;code = 116 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 = M;code = 77 char = M;code = 77 char = P;code = 80 char = -;code = 45 char = 2;code = 50 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = M;code = 77 char = M;code = 77 char = P;code = 80 char = -;code = 45 char = 9;code = 57 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = o;code = 111 char = d;code = 100 char = u;code = 117 char = c;code = 99 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = f;code = 102 char = a;code = 97 char = v;code = 118 char = o;code = 111 char = u;code = 117 char = r;code = 114 char = s;code = 115 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = d;code = 100 char = e;code = 101 char = v;code = 118 char = e;code = 101 char = l;code = 108 char = o;code = 111 char = p;code = 112 char = m;code = 109 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = e;code = 101 char = m;code = 109 char = p;code = 112 char = h;code = 104 char = y;code = 121 char = s;code = 115 char = e;code = 101 char = m;code = 109 char = a;code = 97 char = .;code = 46 char = <;code = 60 char = b;code = 98 char = r;code = 114 char = /;code = 47 char = >;code = 62 result sql = This study describes induction of pulmonary inflammation, production of matrix metalloprotease of type 2 (MMP-2) and type 9 (MMP-9), and emphysema in cadmium (Cd)-exposed rats. SPRAGUE-DAWLEY RATS WERE RANDOMLY DISTRIBUTED INTO TWO GROUPS: one placebo-exposed group undergoing saline (NaCl 0.9%) inhalation (n=30) and one Cd-exposed group undergoing cadmium (CdCl(2) 0.1%) inhalation (n=30). The animals of the placebo- and Cd-exposed groups were divided in five subgroups (n=6). Subgroups underwent either a single exposure of 1h or repeated exposures three times weekly for 1h during 3 weeks (3W), 5 weeks (5W), 5 weeks followed by 2 weeks without exposure (5W+2) or 5 weeks followed by 4 weeks without exposure (5W+4). Each animal underwent determination of enhanced pause (Penh) as index of airflow limitation prior to the first exposure as well as before sacrifice. The animals were sacrificed the day after their last exposure. The left lung was fixed for histomorphometric analysis (determination of median interwall distance (MIWD)), whilst bronchoalveolar lavage fluid (BALF) was collected from the right lung. BALF was analyzed cytologically, and MMP-2 and MMP-9 levels were determined by gelatine zymography. Twelve rats previously instilled with pancreatic elastase were used as positive emphysema controls and underwent the same investigations. Cd-exposure induced a significant increase of BALF macrophages, neutrophils and MMP-9 up to 5W+4, whereas MMP-2 gelatinolytic activity returned to baseline levels within 5W. MIWD was significantly increased in all repeatedly Cd-exposed groups and elastase-treated rats. Penh was increased in Cd-exposed rats after a single exposure and after 3W. MMP gelatinolytic activity was significantly correlated with macrophages, neutrophils and Penh. In repeatedly exposed rats, MIWD was positively and significantly correlated with MMP gelatinolytic activity, suggesting that increased MMP-2 and MMP-9 production favours the development of emphysema.
Publication: Toxicology 2005 Jul 1 ;211(1-2)::36-48.
Publication Date: 2005 Jul 1
Study Author(s): Kirschvink, Nathalie;Vincke, Grégoire;Fiévez, Laurence;Onclinx, Cécile;Wirth, Delphine;Belleflamme, Michèle;Louis, Renaud;Cataldo, Didier;Peck, Michael J;Gustin, Pascal;
Institution: Department for Functional Sciences B41, Section of Pharmacology, Pharmacotherapy and Toxicology, Faculty of Veterinary Medicine, University of Liège, Liège 4000, Belgium.
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This study describes induction of pulmonary inflammation, production of matrix metalloprotease of type 2 (MMP-2) and type 9 (MMP-9), and emphysema in cadmium (Cd)-exposed rats. SPRAGUE-DAWLEY RATS WERE RANDOMLY DISTRIBUTED INTO TWO GROUPS: one placebo-exposed group undergoing saline (NaCl 0.9%) inhalation (n=30) and one Cd-exposed group undergoing cadmium (CdCl(2) 0.1%) inhalation (n=30). The animals of the placebo- and Cd-exposed groups were divided in five subgroups (n=6). Subgroups underwent either a single exposure of 1h or repeated exposures three times weekly for 1h during 3 weeks (3W), 5 weeks (5W), 5 weeks followed by 2 weeks without exposure (5W+2) or 5 weeks followed by 4 weeks without exposure (5W+4). Each animal underwent determination of enhanced pause (Penh) as index of airflow limitation prior to the first exposure as well as before sacrifice. The animals were sacrificed the day after their last exposure. The left lung was fixed for histomorphometric analysis (determination of median interwall distance (MIWD)), whilst bronchoalveolar lavage fluid (BALF) was collected from the right lung. BALF was analyzed cytologically, and MMP-2 and MMP-9 levels were determined by gelatine zymography. Twelve rats previously instilled with pancreatic elastase were used as positive emphysema controls and underwent the same investigations. Cd-exposure induced a significant increase of BALF macrophages, neutrophils and MMP-9 up to 5W+4, whereas MMP-2 gelatinolytic activity returned to baseline levels within 5W. MIWD was significantly increased in all repeatedly Cd-exposed groups and elastase-treated rats. Penh was increased in Cd-exposed rats after a single exposure and after 3W. MMP gelatinolytic activity was significantly correlated with macrophages, neutrophils and Penh. In repeatedly exposed rats, MIWD was positively and significantly correlated with MMP gelatinolytic activity, suggesting that increased MMP-2 and MMP-9 production favours the development of emphysema.
PMID: 15863246