GABAergic

Benzodiazepines. Several BZs have anticonvulsant activity and ate used for the treatment of epilepsy producing their anticonvulsant actions via interactions with the GABA /BZ receptor complex to enhance inhibitory GABAergic transmission (1). The anticonvulsant actions of the BZs tend to tolerate upon chronic usage in six months, and BZs also lead to withdrawal symptomatology. Other side effects include sedation, ataxia, and cognitive impairment. 

Altered synaptic properties Numerous changes in the properties of inhibitory (GABAergic) and excitatory (glutamatergic) synapses have been reported. While the simple adage of an imbalance between inhibitory and excitatory neurotransmission in epilepsy is not generally applicable, some forms of inhibition are lost or impaired in epilepsy. Likewise, an increased function of glutamate receptors has been demonstrated in some brain areas. 

GABAergic transmission, tiagabine has sedative side effects. 

One of the oldest antiepileptic drugs, bromide, has been repotted to boost inhibition by an unknown mechanism. Bromide is still in use in certain cases of tonic-clonic seizures and in pediatric patients with recurrent febrile convulsions and others. The mechanism of action may include a potentiation of GABAergic synaptic transmission, although the precise target is not known. 

Drugs with unknown mechanism of action are gabapentin, bromides (but see above effects on GABAergic transmission) and adrenocorticotropic hormone (ACTH), which is used in infantile spasms. 

This is the case when the excitatory Dx receptors on these striatal GABAergic projection neurons are no longer activated since the transmitter dopamine is reduced (green broken arrows at 2). The indirect pathway is... 

Parvalbumin (Fig 1) is a cytosolic protein expressed in fast-twitch skeletal muscles and in the nervous system. In muscles, parvalbumin controls the relaxation process. In the CNS, parvalbumin, expressed in a subpopulation of GABAergic neurons, is correlated with their firing rates, protecting the cells from Ca2+ overload. 

GABA (y-aminobutyric acid) is an amino acid with mostly inhibitory functions in the mammalian central nervous system. Structures involved in releasing or binding GABA as a neurotransmitter constitute the GABAergic system. The GABAergic system is involved... 

Several groups of CNS active drugs exert all or some of their clinical effects by their action on the GABAergic system. 

GABAergic System Glycine Receptors Ionotropic Glutamate Receptors Nicotinic Receptors Local Anaesthetics... 

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