|
|
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result sql = Platelet aggregation in arterial hypertension: is there a nitric oxide-urea connection?
Platelet aggregation in arterial hypertension: is there a nitric oxide-urea connection?char = 1;code = 49
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result sql = 1. Systemic arterial hypertension (SAH) is a major independent risk factor for cardiovascular disease. The physiopathology of SAH is multifactorial, complex and remains to be elucidated. Nitric oxide (NO) is an important regulator of vascular and haemostatic functions. The cationic amino acid l-arginine serves as the substrate for NO synthases (NOS) and arginase, an enzyme of the urea cycle. We have previously reported inhibition of l-arginine transport in erythrocytes and platelets in hypertension. 2. The aim of the present study was to investigate the l-arginine-NO pathway and urea cycle in platelets and their role in platelet function and systemic inflammatory responses in SAH patients. The expression and activity of NOS and arginase in platelets, platelet aggregation and plasma levels of C-reactive protein (CRP) were evaluated in 20 SAH patients and 18 age-matched healthy volunteers. 3. There was a reduction of NOS activity in hypertensive patients that was associated with activation of platelet aggregability induced by collagen, but not by ADP. Platelets from SAH patients exhibited compensatory overexpression of inducible NOS, but not endothelial NOS. Intraplatelet arginase activity in SAH patients was not affected, but systemic concentrations of CRP were increased compared with controls. 4. It is likely that diminished NO bioavailability in SAH contributes to cardiovascular complications. Our findings may provide the basis for developing new therapeutic approaches for the treatment of hypertension.
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result sql = Platelet aggregation in arterial hypertension: is there a nitric oxide-urea connection?
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char = s;code = 115
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 = p;code = 112
char = h;code = 104
char = y;code = 121
char = s;code = 115
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char = o;code = 111
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char = a;code = 97
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char = h;code = 104
char = o;code = 111
char = l;code = 108
char = o;code = 111
char = g;code = 103
char = y;code = 121
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char = o;code = 111
char = f;code = 102
char = ;code = 32
char = S;code = 83
char = A;code = 65
char = H;code = 72
char = ;code = 32
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = m;code = 109
char = u;code = 117
char = l;code = 108
char = t;code = 116
char = i;code = 105
char = f;code = 102
char = a;code = 97
char = c;code = 99
char = t;code = 116
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char = i;code = 105
char = a;code = 97
char = l;code = 108
char = ,;code = 44
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = m;code = 109
char = p;code = 112
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char = e;code = 101
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char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = r;code = 114
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char = m;code = 109
char = a;code = 97
char = i;code = 105
char = n;code = 110
char = s;code = 115
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = b;code = 98
char = e;code = 101
char = ;code = 32
char = e;code = 101
char = l;code = 108
char = u;code = 117
char = c;code = 99
char = i;code = 105
char = d;code = 100
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = .;code = 46
char = ;code = 32
char = N;code = 78
char = i;code = 105
char = t;code = 116
char = r;code = 114
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = o;code = 111
char = x;code = 120
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = ;code = 32
char = (;code = 40
char = N;code = 78
char = O;code = 79
char = );code = 41
char = ;code = 32
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = a;code = 97
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char = ;code = 32
char = i;code = 105
char = m;code = 109
char = p;code = 112
char = o;code = 111
char = r;code = 114
char = t;code = 116
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = g;code = 103
char = u;code = 117
char = l;code = 108
char = a;code = 97
char = t;code = 116
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = v;code = 118
char = a;code = 97
char = s;code = 115
char = c;code = 99
char = u;code = 117
char = l;code = 108
char = a;code = 97
char = r;code = 114
char = ;code = 32
char = a;code = 97
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char = d;code = 100
char = ;code = 32
char = h;code = 104
char = a;code = 97
char = e;code = 101
char = m;code = 109
char = o;code = 111
char = s;code = 115
char = t;code = 116
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = f;code = 102
char = u;code = 117
char = n;code = 110
char = c;code = 99
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 = T;code = 84
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = a;code = 97
char = m;code = 109
char = i;code = 105
char = n;code = 110
char = o;code = 111
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char = a;code = 97
char = c;code = 99
char = i;code = 105
char = d;code = 100
char = ;code = 32
char = l;code = 108
char = -;code = 45
char = a;code = 97
char = r;code = 114
char = g;code = 103
char = i;code = 105
char = n;code = 110
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = e;code = 101
char = r;code = 114
char = v;code = 118
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = u;code = 117
char = b;code = 98
char = s;code = 115
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = N;code = 78
char = O;code = 79
char = ;code = 32
char = s;code = 115
char = y;code = 121
char = n;code = 110
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = (;code = 40
char = N;code = 78
char = O;code = 79
char = S;code = 83
char = );code = 41
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = a;code = 97
char = r;code = 114
char = g;code = 103
char = i;code = 105
char = n;code = 110
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = n;code = 110
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char = e;code = 101
char = n;code = 110
char = z;code = 122
char = y;code = 121
char = m;code = 109
char = e;code = 101
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 = u;code = 117
char = r;code = 114
char = e;code = 101
char = a;code = 97
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char = c;code = 99
char = y;code = 121
char = c;code = 99
char = l;code = 108
char = e;code = 101
char = .;code = 46
char = ;code = 32
char = W;code = 87
char = e;code = 101
char = ;code = 32
char = h;code = 104
char = a;code = 97
char = v;code = 118
char = e;code = 101
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 = r;code = 114
char = e;code = 101
char = p;code = 112
char = o;code = 111
char = r;code = 114
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = h;code = 104
char = i;code = 105
char = b;code = 98
char = i;code = 105
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 = l;code = 108
char = -;code = 45
char = a;code = 97
char = r;code = 114
char = g;code = 103
char = i;code = 105
char = n;code = 110
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = n;code = 110
char = s;code = 115
char = p;code = 112
char = o;code = 111
char = r;code = 114
char = t;code = 116
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = e;code = 101
char = r;code = 114
char = y;code = 121
char = t;code = 116
char = h;code = 104
char = r;code = 114
char = o;code = 111
char = c;code = 99
char = y;code = 121
char = t;code = 116
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = a;code = 97
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char = d;code = 100
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char = p;code = 112
char = l;code = 108
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = l;code = 108
char = e;code = 101
char = t;code = 116
char = s;code = 115
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char = i;code = 105
char = n;code = 110
char = ;code = 32
char = h;code = 104
char = y;code = 121
char = p;code = 112
char = e;code = 101
char = r;code = 114
char = t;code = 116
char = e;code = 101
char = n;code = 110
char = s;code = 115
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = .;code = 46
char = ;code = 32
char = 2;code = 50
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
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char = m;code = 109
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char = o;code = 111
char = f;code = 102
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
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char = p;code = 112
char = r;code = 114
char = e;code = 101
char = s;code = 115
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char = n;code = 110
char = t;code = 116
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char = s;code = 115
char = t;code = 116
char = u;code = 117
char = d;code = 100
char = y;code = 121
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char = w;code = 119
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = t;code = 116
char = o;code = 111
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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
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char = e;code = 101
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char = t;code = 116
char = h;code = 104
char = e;code = 101
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char = l;code = 108
char = -;code = 45
char = a;code = 97
char = r;code = 114
char = g;code = 103
char = i;code = 105
char = n;code = 110
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = -;code = 45
char = N;code = 78
char = O;code = 79
char = ;code = 32
char = p;code = 112
char = a;code = 97
char = t;code = 116
char = h;code = 104
char = w;code = 119
char = a;code = 97
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char = a;code = 97
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char = d;code = 100
char = ;code = 32
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = a;code = 97
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char = c;code = 99
char = y;code = 121
char = c;code = 99
char = l;code = 108
char = e;code = 101
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char = i;code = 105
char = n;code = 110
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char = p;code = 112
char = l;code = 108
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = l;code = 108
char = e;code = 101
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char = s;code = 115
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char = t;code = 116
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char = e;code = 101
char = i;code = 105
char = r;code = 114
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char = r;code = 114
char = o;code = 111
char = l;code = 108
char = e;code = 101
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char = i;code = 105
char = n;code = 110
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char = p;code = 112
char = l;code = 108
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = l;code = 108
char = e;code = 101
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char = ;code = 32
char = f;code = 102
char = u;code = 117
char = n;code = 110
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
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char = d;code = 100
char = ;code = 32
char = s;code = 115
char = y;code = 121
char = s;code = 115
char = t;code = 116
char = e;code = 101
char = m;code = 109
char = i;code = 105
char = c;code = 99
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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 = o;code = 111
char = r;code = 114
char = y;code = 121
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = p;code = 112
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = S;code = 83
char = A;code = 65
char = H;code = 72
char = ;code = 32
char = p;code = 112
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = s;code = 115
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = e;code = 101
char = x;code = 120
char = p;code = 112
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = s;code = 115
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = a;code = 97
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char = d;code = 100
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 = o;code = 111
char = f;code = 102
char = ;code = 32
char = N;code = 78
char = O;code = 79
char = S;code = 83
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = a;code = 97
char = r;code = 114
char = g;code = 103
char = i;code = 105
char = n;code = 110
char = a;code = 97
char = s;code = 115
char = e;code = 101
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char = i;code = 105
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char = p;code = 112
char = l;code = 108
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = l;code = 108
char = e;code = 101
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char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = p;code = 112
char = l;code = 108
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = l;code = 108
char = e;code = 101
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char = a;code = 97
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char = g;code = 103
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char = i;code = 105
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char = d;code = 100
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char = a;code = 97
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char = m;code = 109
char = a;code = 97
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char = v;code = 118
char = e;code = 101
char = l;code = 108
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char = o;code = 111
char = f;code = 102
char = ;code = 32
char = C;code = 67
char = -;code = 45
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char = a;code = 97
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char = t;code = 116
char = e;code = 101
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char = n;code = 110
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char = (;code = 40
char = C;code = 67
char = R;code = 82
char = P;code = 80
char = );code = 41
char = ;code = 32
char = w;code = 119
char = e;code = 101
char = r;code = 114
char = e;code = 101
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char = a;code = 97
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char = u;code = 117
char = a;code = 97
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char = i;code = 105
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char = 2;code = 50
char = 0;code = 48
char = ;code = 32
char = S;code = 83
char = A;code = 65
char = H;code = 72
char = ;code = 32
char = p;code = 112
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = e;code = 101
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char = t;code = 116
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char = 1;code = 49
char = 8;code = 56
char = ;code = 32
char = a;code = 97
char = g;code = 103
char = e;code = 101
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char = m;code = 109
char = a;code = 97
char = t;code = 116
char = c;code = 99
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char = e;code = 101
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char = h;code = 104
char = e;code = 101
char = a;code = 97
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char = t;code = 116
char = h;code = 104
char = y;code = 121
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char = v;code = 118
char = o;code = 111
char = l;code = 108
char = u;code = 117
char = n;code = 110
char = t;code = 116
char = e;code = 101
char = e;code = 101
char = r;code = 114
char = s;code = 115
char = .;code = 46
char = ;code = 32
char = 3;code = 51
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = w;code = 119
char = a;code = 97
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char = ;code = 32
char = a;code = 97
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char = e;code = 101
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 = N;code = 78
char = O;code = 79
char = S;code = 83
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
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char = i;code = 105
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char = ;code = 32
char = h;code = 104
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char = p;code = 112
char = e;code = 101
char = r;code = 114
char = t;code = 116
char = e;code = 101
char = n;code = 110
char = s;code = 115
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char = v;code = 118
char = e;code = 101
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char = p;code = 112
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = e;code = 101
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char = t;code = 116
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char = t;code = 116
char = h;code = 104
char = a;code = 97
char = t;code = 116
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char = w;code = 119
char = a;code = 97
char = s;code = 115
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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
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char = w;code = 119
char = i;code = 105
char = t;code = 116
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char = a;code = 97
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char = i;code = 105
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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 = p;code = 112
char = l;code = 108
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = l;code = 108
char = e;code = 101
char = t;code = 116
char = ;code = 32
char = a;code = 97
char = g;code = 103
char = g;code = 103
char = r;code = 114
char = e;code = 101
char = g;code = 103
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result sql = 1. Systemic arterial hypertension (SAH) is a major independent risk factor for cardiovascular disease. The physiopathology of SAH is multifactorial, complex and remains to be elucidated. Nitric oxide (NO) is an important regulator of vascular and haemostatic functions. The cationic amino acid l-arginine serves as the substrate for NO synthases (NOS) and arginase, an enzyme of the urea cycle. We have previously reported inhibition of l-arginine transport in erythrocytes and platelets in hypertension. 2. The aim of the present study was to investigate the l-arginine-NO pathway and urea cycle in platelets and their role in platelet function and systemic inflammatory responses in SAH patients. The expression and activity of NOS and arginase in platelets, platelet aggregation and plasma levels of C-reactive protein (CRP) were evaluated in 20 SAH patients and 18 age-matched healthy volunteers. 3. There was a reduction of NOS activity in hypertensive patients that was associated with activation of platelet aggregability induced by collagen, but not by ADP. Platelets from SAH patients exhibited compensatory overexpression of inducible NOS, but not endothelial NOS. Intraplatelet arginase activity in SAH patients was not affected, but systemic concentrations of CRP were increased compared with controls. 4. It is likely that diminished NO bioavailability in SAH contributes to cardiovascular complications. Our findings may provide the basis for developing new therapeutic approaches for the treatment of hypertension.
Publication: Clin. Exp. Pharmacol. Physiol. 2010 Feb ;37(2)::167-72. :doi: 10.1111/j.1440-1681.2009.05247.x.
Publication Date: 2010 Feb
Study Author(s): Moss, Monique B;Siqueira, Mariana A;Mann, Giovanni E;Brunini, Tatiana Mc;Mendes-Ribeiro, Antônio C;
Institution: Department of Pharmacology and Psychobiology, State University of Rio de Janeiro, Rio de Janeiro, Brazil.
Shortcut link to this study:
Publication Date: 2010 Feb
Study Author(s): Moss, Monique B;Siqueira, Mariana A;Mann, Giovanni E;Brunini, Tatiana Mc;Mendes-Ribeiro, Antônio C;
Institution: Department of Pharmacology and Psychobiology, State University of Rio de Janeiro, Rio de Janeiro, Brazil.
Shortcut link to this study:
1. Systemic arterial hypertension (SAH) is a major independent risk factor for cardiovascular disease. The physiopathology of SAH is multifactorial, complex and remains to be elucidated. Nitric oxide (NO) is an important regulator of vascular and haemostatic functions. The cationic amino acid l-arginine serves as the substrate for NO synthases (NOS) and arginase, an enzyme of the urea cycle. We have previously reported inhibition of l-arginine transport in erythrocytes and platelets in hypertension. 2. The aim of the present study was to investigate the l-arginine-NO pathway and urea cycle in platelets and their role in platelet function and systemic inflammatory responses in SAH patients. The expression and activity of NOS and arginase in platelets, platelet aggregation and plasma levels of C-reactive protein (CRP) were evaluated in 20 SAH patients and 18 age-matched healthy volunteers. 3. There was a reduction of NOS activity in hypertensive patients that was associated with activation of platelet aggregability induced by collagen, but not by ADP. Platelets from SAH patients exhibited compensatory overexpression of inducible NOS, but not endothelial NOS. Intraplatelet arginase activity in SAH patients was not affected, but systemic concentrations of CRP were increased compared with controls. 4. It is likely that diminished NO bioavailability in SAH contributes to cardiovascular complications. Our findings may provide the basis for developing new therapeutic approaches for the treatment of hypertension.
PMID: 19566824
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