Biomaterial Database

Changes in the metabolism and binding of GABA in the rat brain in thioacetamide-induced hepatogenic encephalopathy. 1986

U Wysmyk-Cybula, and Z Dabrowiecki, and J Albrecht

The GABA level, and the glutamic acid decarboxylase (GAD) and GABA-aminotransferase (GABA-T) activities were measured in the cortex and striatum of rats in which the early stages of hepatogenic encephalopathy (HE) had been induced by few intraperitoneal administrations of thioacetamide (TAA). Besides, the GABA binding to synaptic plasma membranes (SPM) isolated from whole brain hemispheres was examined. The first part of the study revealed significant changes both in the neurotransmitter level and in the enzyme activities; no correlation was observed, however, between the accumulation of GABA and the progression of the disease. In contrast, subsequent stages of HE in the TAA model were found to be characterized by a gradual decrease of both Bmax and KD values for GABA binding, which may reflect a gradual decrease in the number of binding sites, accompanied by sensitization of the remaining receptors. The results are discussed in view of the possible involvement of this inhibitory neurotransmitter in the pathogenesis of HE.

UI	MeSH Term	Description	Entries
D011919	Rats, Inbred Strains	Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations or by parent x offspring matings carried out with certain restrictions. This also includes animals with a long history of closed colony breeding.	August Rats,Inbred Rat Strains,Inbred Strain of Rat,Inbred Strain of Rats,Inbred Strains of Rats,Rat, Inbred Strain,August Rat,Inbred Rat Strain,Inbred Strain Rat,Inbred Strain Rats,Inbred Strains Rat,Inbred Strains Rats,Rat Inbred Strain,Rat Inbred Strains,Rat Strain, Inbred,Rat Strains, Inbred,Rat, August,Rat, Inbred Strains,Rats Inbred Strain,Rats Inbred Strains,Rats, August,Rats, Inbred Strain,Strain Rat, Inbred,Strain Rats, Inbred,Strain, Inbred Rat,Strains, Inbred Rat
D001921	Brain	The part of CENTRAL NERVOUS SYSTEM that is contained within the skull (CRANIUM). Arising from the NEURAL TUBE, the embryonic brain is comprised of three major parts including PROSENCEPHALON (the forebrain); MESENCEPHALON (the midbrain); and RHOMBENCEPHALON (the hindbrain). The developed brain consists of CEREBRUM; CEREBELLUM; and other structures in the BRAIN STEM.	Encephalon
D002540	Cerebral Cortex	The thin layer of GRAY MATTER on the surface of the CEREBRAL HEMISPHERES that develops from the TELENCEPHALON and folds into gyri and sulci. It reaches its highest development in humans and is responsible for intellectual faculties and higher mental functions.	Allocortex,Archipallium,Cortex Cerebri,Cortical Plate,Paleocortex,Periallocortex,Allocortices,Archipalliums,Cerebral Cortices,Cortex Cerebrus,Cortex, Cerebral,Cortical Plates,Paleocortices,Periallocortices,Plate, Cortical
D003342	Corpus Striatum	Striped GRAY MATTER and WHITE MATTER consisting of the NEOSTRIATUM and paleostriatum (GLOBUS PALLIDUS). It is located in front of and lateral to the THALAMUS in each cerebral hemisphere. The gray substance is made up of the CAUDATE NUCLEUS and the lentiform nucleus (the latter consisting of the GLOBUS PALLIDUS and PUTAMEN). The WHITE MATTER is the INTERNAL CAPSULE.	Lenticular Nucleus,Lentiform Nucleus,Lentiform Nuclei,Nucleus Lentiformis,Lentiformis, Nucleus,Nuclei, Lentiform,Nucleus, Lenticular,Nucleus, Lentiform,Striatum, Corpus
D005260	Female		Females
D005680	gamma-Aminobutyric Acid	The most common inhibitory neurotransmitter in the central nervous system.	4-Aminobutyric Acid,GABA,4-Aminobutanoic Acid,Aminalon,Aminalone,Gammalon,Lithium GABA,gamma-Aminobutyric Acid, Calcium Salt (2:1),gamma-Aminobutyric Acid, Hydrochloride,gamma-Aminobutyric Acid, Monolithium Salt,gamma-Aminobutyric Acid, Monosodium Salt,gamma-Aminobutyric Acid, Zinc Salt (2:1),4 Aminobutanoic Acid,4 Aminobutyric Acid,Acid, Hydrochloride gamma-Aminobutyric,GABA, Lithium,Hydrochloride gamma-Aminobutyric Acid,gamma Aminobutyric Acid,gamma Aminobutyric Acid, Hydrochloride,gamma Aminobutyric Acid, Monolithium Salt,gamma Aminobutyric Acid, Monosodium Salt
D006501	Hepatic Encephalopathy	A syndrome characterized by central nervous system dysfunction in association with LIVER FAILURE, including portal-systemic shunts. Clinical features include lethargy and CONFUSION (frequently progressing to COMA); ASTERIXIS; NYSTAGMUS, PATHOLOGIC; brisk oculovestibular reflexes; decorticate and decerebrate posturing; MUSCLE SPASTICITY; and bilateral extensor plantar reflexes (see REFLEX, BABINSKI). ELECTROENCEPHALOGRAPHY may demonstrate triphasic waves. (From Adams et al., Principles of Neurology, 6th ed, pp1117-20; Plum & Posner, Diagnosis of Stupor and Coma, 3rd ed, p222-5)	Encephalopathy, Hepatic,Portosystemic Encephalopathy,Encephalopathy, Hepatocerebral,Encephalopathy, Portal-Systemic,Encephalopathy, Portosystemic,Fulminant Hepatic Failure with Cerebral Edema,Hepatic Coma,Hepatic Stupor,Hepatocerebral Encephalopathy,Portal-Systemic Encephalopathy,Coma, Hepatic,Comas, Hepatic,Encephalopathies, Hepatic,Encephalopathies, Hepatocerebral,Encephalopathies, Portal-Systemic,Encephalopathies, Portosystemic,Encephalopathy, Portal Systemic,Hepatic Comas,Hepatic Encephalopathies,Hepatic Stupors,Hepatocerebral Encephalopathies,Portal Systemic Encephalopathy,Portal-Systemic Encephalopathies,Portosystemic Encephalopathies,Stupor, Hepatic,Stupors, Hepatic
D000081	Acetamides	Derivatives of acetamide that are used as solvents, as mild irritants, and in organic synthesis.
D000612	4-Aminobutyrate Transaminase	An enzyme that converts brain gamma-aminobutyric acid (GAMMA-AMINOBUTYRIC ACID) into succinate semialdehyde, which can be converted to succinic acid and enter the citric acid cycle. It also acts on beta-alanine. EC 2.6.1.19.	Aminobutyrate Aminotransferase,GABA Transaminase,beta-Alanine Ketoglutarate Aminotransferase,GABA Aminotransferase,GABA-alpha-Ketoglutarate Aminotransferase,4 Aminobutyrate Transaminase,Aminotransferase, Aminobutyrate,Aminotransferase, GABA,Aminotransferase, GABA-alpha-Ketoglutarate,Aminotransferase, beta-Alanine Ketoglutarate,GABA alpha Ketoglutarate Aminotransferase,Ketoglutarate Aminotransferase, beta-Alanine,Transaminase, 4-Aminobutyrate,Transaminase, GABA,beta Alanine Ketoglutarate Aminotransferase
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia