char = N;code = 78
char = o;code = 111
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char = e;code = 101
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char = t;code = 116
char = a;code = 97
char = s;code = 115
char = i;code = 105
char = s;code = 115
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char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = l;code = 108
char = a;code = 97
char = c;code = 99
char = k;code = 107
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = e;code = 101
char = p;code = 112
char = i;code = 105
char = l;code = 108
char = e;code = 101
char = p;code = 112
char = s;code = 115
char = y;code = 121
char = ;code = 32
char = p;code = 112
char = h;code = 104
char = e;code = 101
char = n;code = 110
char = o;code = 111
char = t;code = 116
char = y;code = 121
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char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = G;code = 71
char = A;code = 65
char = B;code = 66
char = A;code = 65
char = ;code = 32
char = A;code = 65
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = c;code = 99
char = e;code = 101
char = p;code = 112
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char = r;code = 114
char = ;code = 32
char = a;code = 97
char = l;code = 108
char = p;code = 112
char = h;code = 104
char = a;code = 97
char = 3;code = 51
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char = s;code = 115
char = u;code = 117
char = b;code = 98
char = u;code = 117
char = n;code = 110
char = i;code = 105
char = t;code = 116
char = -;code = 45
char = k;code = 107
char = n;code = 110
char = o;code = 111
char = c;code = 99
char = k;code = 107
char = o;code = 111
char = u;code = 117
char = t;code = 116
char = ;code = 32
char = m;code = 109
char = i;code = 105
char = c;code = 99
char = e;code = 101
char = .;code = 46
result sql = Normal sleep homeostasis and lack of epilepsy phenotype in GABA A receptor alpha3 subunit-knockout mice.
Normal sleep homeostasis and lack of epilepsy phenotype in GABA A receptor alpha3 subunit-knockout mice.
char = T;code = 84
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char = t;code = 116
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char = l;code = 108
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char = z;code = 122
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char = (;code = 40
char = E;code = 69
char = E;code = 69
char = G;code = 71
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char = l;code = 108
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char = r;code = 114
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char = c;code = 99
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char = o;code = 111
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char = a;code = 97
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char = c;code = 99
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char = o;code = 111
char = l;code = 108
char = l;code = 108
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 = 71
char = A;code = 65
char = B;code = 66
char = A;code = 65
char = e;code = 101
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char = s;code = 115
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char = n;code = 110
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char = ,;code = 44
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char = G;code = 71
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char = B;code = 66
char = A;code = 65
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char = A;code = 65
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char = n;code = 110
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char = ;code = 32
char = e;code = 101
char = x;code = 120
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char = s;code = 115
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char = l;code = 108
char = ;code = 32
char = l;code = 108
char = a;code = 97
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char = ;code = 32
char = V;code = 86
char = I;code = 73
char = ;code = 32
char = a;code = 97
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char = (;code = 40
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char = a;code = 97
char = p;code = 112
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = a;code = 97
char = l;code = 108
char = p;code = 112
char = h;code = 104
char = a;code = 97
char = 3;code = 51
char = -;code = 45
char = G;code = 71
char = A;code = 65
char = B;code = 66
char = A;code = 65
char = ;code = 32
char = A;code = 65
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = c;code = 99
char = e;code = 101
char = p;code = 112
char = t;code = 116
char = o;code = 111
char = r;code = 114
char = s;code = 115
char = /;code = 47
char = g;code = 103
char = e;code = 101
char = p;code = 112
char = h;code = 104
char = y;code = 121
char = r;code = 114
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = c;code = 99
char = l;code = 108
char = u;code = 117
char = s;code = 115
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = n;code = 110
char = R;code = 82
char = T;code = 84
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = G;code = 71
char = A;code = 65
char = B;code = 66
char = A;code = 65
char = ;code = 32
char = A;code = 65
char = -;code = 45
char = m;code = 109
char = e;code = 101
char = d;code = 100
char = i;code = 105
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = s;code = 115
char = y;code = 121
char = n;code = 110
char = a;code = 97
char = p;code = 112
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = c;code = 99
char = u;code = 117
char = r;code = 114
char = r;code = 114
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = u;code = 117
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = l;code = 108
char = a;code = 97
char = m;code = 109
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = s;code = 115
char = l;code = 108
char = i;code = 105
char = c;code = 99
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = l;code = 108
char = s;code = 115
char = o;code = 111
char = ;code = 32
char = e;code = 101
char = x;code = 120
char = a;code = 97
char = m;code = 109
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = d;code = 100
char = .;code = 46
char = ;code = 32
char = E;code = 69
char = E;code = 69
char = G;code = 71
char = ;code = 32
char = s;code = 115
char = p;code = 112
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = l;code = 108
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 = 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 = n;code = 110
char = o;code = 111
char = ;code = 32
char = d;code = 100
char = i;code = 105
char = f;code = 102
char = f;code = 102
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = ;code = 32
char = b;code = 98
char = e;code = 101
char = t;code = 116
char = w;code = 119
char = e;code = 101
char = e;code = 101
char = n;code = 110
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 = 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 = n;code = 110
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = r;code = 114
char = a;code = 97
char = p;code = 112
char = i;code = 105
char = d;code = 100
char = -;code = 45
char = e;code = 101
char = y;code = 121
char = e;code = 101
char = ;code = 32
char = m;code = 109
char = o;code = 111
char = v;code = 118
char = e;code = 101
char = m;code = 109
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = (;code = 40
char = N;code = 78
char = R;code = 82
char = E;code = 69
char = M;code = 77
char = );code = 41
char = ;code = 32
char = s;code = 115
char = l;code = 108
char = e;code = 101
char = e;code = 101
char = p;code = 112
char = ;code = 32
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = a;code = 97
char = t;code = 116
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = k;code = 107
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = -;code = 45
char = N;code = 78
char = R;code = 82
char = E;code = 69
char = M;code = 77
char = ;code = 32
char = s;code = 115
char = l;code = 108
char = e;code = 101
char = e;code = 101
char = p;code = 112
char = ;code = 32
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = n;code = 110
char = s;code = 115
char = i;code = 105
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 = E;code = 69
char = E;code = 69
char = G;code = 71
char = ;code = 32
char = p;code = 112
char = o;code = 111
char = w;code = 119
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = p;code = 112
char = i;code = 105
char = n;code = 110
char = d;code = 100
char = l;code = 108
char = e;code = 101
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 = r;code = 114
char = a;code = 97
char = n;code = 110
char = g;code = 103
char = e;code = 101
char = ;code = 32
char = (;code = 40
char = 1;code = 49
char = 0;code = 48
char = -;code = 45
char = 1;code = 49
char = 5;code = 53
char = ;code = 32
char = H;code = 72
char = z;code = 122
char = );code = 41
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 = l;code = 108
char = o;code = 111
char = w;code = 119
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = a;code = 97
char = t;code = 116
char = ;code = 32
char = N;code = 78
char = R;code = 82
char = E;code = 69
char = M;code = 77
char = -;code = 45
char = R;code = 82
char = E;code = 69
char = M;code = 77
char = ;code = 32
char = s;code = 115
char = l;code = 108
char = e;code = 101
char = e;code = 101
char = p;code = 112
char = ;code = 32
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = n;code = 110
char = s;code = 115
char = i;code = 105
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 = ;code = 32
char = m;code = 109
char = u;code = 117
char = t;code = 116
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = m;code = 109
char = p;code = 112
char = a;code = 97
char = r;code = 114
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 = w;code = 119
char = i;code = 105
char = l;code = 108
char = d;code = 100
char = -;code = 45
char = t;code = 116
char = y;code = 121
char = p;code = 112
char = e;code = 101
char = ;code = 32
char = m;code = 109
char = i;code = 105
char = c;code = 99
char = e;code = 101
char = .;code = 46
char = ;code = 32
char = E;code = 69
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 = 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 = s;code = 115
char = l;code = 108
char = e;code = 101
char = e;code = 101
char = p;code = 112
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = s;code = 115
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = 6;code = 54
char = ;code = 32
char = h;code = 104
char = ;code = 32
char = s;code = 115
char = l;code = 108
char = e;code = 101
char = e;code = 101
char = p;code = 112
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = p;code = 112
char = r;code = 114
char = i;code = 105
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 = d;code = 100
char = i;code = 105
char = d;code = 100
char = ;code = 32
char = n;code = 110
char = o;code = 111
char = t;code = 116
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = v;code = 118
char = e;code = 101
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = y;code = 121
char = ;code = 32
char = d;code = 100
char = i;code = 105
char = f;code = 102
char = f;code = 102
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
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 = 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 = 69
char = E;code = 69
char = G;code = 71
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 = i;code = 105
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = b;code = 98
char = e;code = 101
char = t;code = 116
char = w;code = 119
char = e;code = 101
char = e;code = 101
char = n;code = 110
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 = 46
char = ;code = 32
char = F;code = 70
char = i;code = 105
char = n;code = 110
char = a;code = 97
char = l;code = 108
char = l;code = 108
char = y;code = 121
char = ,;code = 44
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = k;code = 107
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = E;code = 69
char = E;code = 69
char = G;code = 71
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 = ;code = 32
char = s;code = 115
char = l;code = 108
char = i;code = 105
char = g;code = 103
char = h;code = 104
char = t;code = 116
char = l;code = 108
char = y;code = 121
char = ;code = 32
char = l;code = 108
char = a;code = 97
char = r;code = 114
char = g;code = 103
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = p;code = 112
char = o;code = 111
char = w;code = 119
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = 1;code = 49
char = 1;code = 49
char = -;code = 45
char = 1;code = 49
char = 3;code = 51
char = -;code = 45
char = H;code = 72
char = z;code = 122
char = ;code = 32
char = b;code = 98
char = a;code = 97
char = n;code = 110
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 = p;code = 112
char = h;code = 104
char = a;code = 97
char = 3;code = 51
char = -;code = 45
char = K;code = 75
char = O;code = 79
char = ;code = 32
char = m;code = 109
char = i;code = 105
char = c;code = 99
char = e;code = 101
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 = n;code = 110
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 = b;code = 98
char = e;code = 101
char = h;code = 104
char = a;code = 97
char = v;code = 118
char = i;code = 105
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = n;code = 110
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 = w;code = 119
char = a;code = 97
char = k;code = 107
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = E;code = 69
char = E;code = 69
char = G;code = 71
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 = l;code = 108
char = t;code = 116
char = e;code = 101
char = r;code = 114
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 = 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 = v;code = 118
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = a;code = 97
char = b;code = 98
char = s;code = 115
char = e;code = 101
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = e;code = 101
char = i;code = 105
char = z;code = 122
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = .;code = 46
char = ;code = 32
char = F;code = 70
char = u;code = 117
char = r;code = 114
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = r;code = 114
char = m;code = 109
char = o;code = 111
char = r;code = 114
char = e;code = 101
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = l;code = 108
char = p;code = 112
char = h;code = 104
char = a;code = 97
char = 3;code = 51
char = -;code = 45
char = K;code = 75
char = O;code = 79
char = ;code = 32
char = m;code = 109
char = i;code = 105
char = c;code = 99
char = e;code = 101
char = ;code = 32
char = d;code = 100
char = i;code = 105
char = d;code = 100
char = ;code = 32
char = n;code = 110
char = o;code = 111
char = t;code = 116
char = ;code = 32
char = d;code = 100
char = i;code = 105
char = f;code = 102
char = f;code = 102
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = s;code = 115
char = e;code = 101
char = i;code = 105
char = z;code = 122
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = u;code = 117
char = s;code = 115
char = c;code = 99
char = e;code = 101
char = p;code = 112
char = t;code = 116
char = i;code = 105
char = b;code = 98
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = t;code = 116
char = y;code = 121
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = m;code = 109
char = o;code = 111
char = d;code = 100
char = e;code = 101
char = l;code = 108
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = t;code = 116
char = e;code = 101
char = m;code = 109
char = p;code = 112
char = o;code = 111
char = r;code = 114
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = l;code = 108
char = o;code = 111
char = b;code = 98
char = e;code = 101
char = ;code = 32
char = e;code = 101
char = p;code = 112
char = i;code = 105
char = l;code = 108
char = e;code = 101
char = p;code = 112
char = s;code = 115
char = y;code = 121
char = .;code = 46
char = ;code = 32
char = S;code = 83
char = t;code = 116
char = r;code = 114
char = i;code = 105
char = k;code = 107
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = l;code = 108
char = y;code = 121
char = ,;code = 44
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = s;code = 115
char = p;code = 112
char = i;code = 105
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = d;code = 100
char = i;code = 105
char = s;code = 115
char = r;code = 114
char = u;code = 117
char = p;code = 112
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 = o;code = 111
char = s;code = 115
char = t;code = 116
char = s;code = 115
char = y;code = 121
char = n;code = 110
char = a;code = 97
char = p;code = 112
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = g;code = 103
char = e;code = 101
char = p;code = 112
char = h;code = 104
char = y;code = 121
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result sql = Thalamo-cortical networks generate specific patterns of oscillations during distinct vigilance states and epilepsy, well characterized by electroencephalography (EEG). Oscillations depend on recurrent synaptic loops, which are controlled by GABAergic transmission. In particular, GABA A receptors containing the alpha3 subunit are expressed predominantly in cortical layer VI and thalamic reticular nucleus (nRT) and regulate the activity and firing pattern of neurons in relay nuclei. Therefore, ablation of these receptors by gene targeting might profoundly affect thalamo-cortical oscillations. Here, we investigated the role of alpha3-GABA A receptors in regulating vigilance states and seizure activity by analyzing chronic EEG recordings in alpha3 subunit-knockout (alpha3-KO) mice. The presence of postsynaptic alpha3-GABA A receptors/gephyrin clusters in the nRT and GABA A-mediated synaptic currents in acute thalamic slices was also examined. EEG spectral analysis showed no difference between genotypes during non rapid-eye movement (NREM) sleep or at waking-NREM sleep transitions. EEG power in the spindle frequency range (10-15 Hz) was significantly lower at NREM-REM sleep transitions in mutant compared with wild-type mice. Enhancement of sleep pressure by 6 h sleep deprivation did not reveal any differences in the regulation of EEG activities between genotypes. Finally, the waking EEG showed a slightly larger power in the 11-13-Hz band in alpha3-KO mice. However, neither behavior nor the waking EEG showed alterations suggestive of absence seizures. Furthermore, alpha3-KO mice did not differ in seizure susceptibility in a model of temporal lobe epilepsy. Strikingly, despite the disruption of postsynaptic gephyrin clusters, whole-cell patch clamp recordings revealed intact inhibitory synaptic transmission in the nRT of alpha3-KO mice. These findings show that the lack of alpha3-GABA(A) receptors is extensively compensated for to preserve the integrity of thalamo-cortical function in physiological and pathophysiological situations.

Publication: Neuroscience 2008 Jun 23 ;154(2)::595-605. :doi: 10.1016/j.neuroscience.2008.03.081.
Publication Date: 2008 Jun 23
Study Author(s): Winsky-Sommerer, R;Knapman, A;Fedele, D E;Schofield, C M;Vyazovskiy, V V;Rudolph, U;Huguenard, J R;Fritschy, J-M;Tobler, I;
Institution: Institute of Pharmacology and Toxicology, University of Zurich, Winterthurerstrasse 190, Zurich, Switzerland.
Shortcut link to this study:
Thalamo-cortical networks generate specific patterns of oscillations during distinct vigilance states and epilepsy, well characterized by electroencephalography (EEG). Oscillations depend on recurrent synaptic loops, which are controlled by GABAergic transmission. In particular, GABA A receptors containing the alpha3 subunit are expressed predominantly in cortical layer VI and thalamic reticular nucleus (nRT) and regulate the activity and firing pattern of neurons in relay nuclei. Therefore, ablation of these receptors by gene targeting might profoundly affect thalamo-cortical oscillations. Here, we investigated the role of alpha3-GABA A receptors in regulating vigilance states and seizure activity by analyzing chronic EEG recordings in alpha3 subunit-knockout (alpha3-KO) mice. The presence of postsynaptic alpha3-GABA A receptors/gephyrin clusters in the nRT and GABA A-mediated synaptic currents in acute thalamic slices was also examined. EEG spectral analysis showed no difference between genotypes during non rapid-eye movement (NREM) sleep or at waking-NREM sleep transitions. EEG power in the spindle frequency range (10-15 Hz) was significantly lower at NREM-REM sleep transitions in mutant compared with wild-type mice. Enhancement of sleep pressure by 6 h sleep deprivation did not reveal any differences in the regulation of EEG activities between genotypes. Finally, the waking EEG showed a slightly larger power in the 11-13-Hz band in alpha3-KO mice. However, neither behavior nor the waking EEG showed alterations suggestive of absence seizures. Furthermore, alpha3-KO mice did not differ in seizure susceptibility in a model of temporal lobe epilepsy. Strikingly, despite the disruption of postsynaptic gephyrin clusters, whole-cell patch clamp recordings revealed intact inhibitory synaptic transmission in the nRT of alpha3-KO mice. These findings show that the lack of alpha3-GABA(A) receptors is extensively compensated for to preserve the integrity of thalamo-cortical function in physiological and pathophysiological situations.
PMID: 18485607

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