scholarly journals Protective Effects of .GAMMA.-Aminobutyric Acid in Rats with Streptozotocin-Induced Diabetes

2005 ◽  
Vol 51 (4) ◽  
pp. 278-282 ◽  
Author(s):  
Takako NAKAGAWA ◽  
Takako YOKOZAWA ◽  
Hyun Ju KIM ◽  
Naotoshi SHIBAHARA
1965 ◽  
Vol 20 (6) ◽  
pp. 1337-1340 ◽  
Author(s):  
Lenore M. Kopeloff ◽  
Joseph G. Chusid

The antagonistic properties of pyridoxine and gamma aminobutyric acid (GABA) toward convulsant drugs were evaluated by determining their in vivo protective effects when administered parenterally prior to challenge. In a group of 28 monkeys composed of 19 chronic epileptics and 9 controls, pyridoxine and GABA provided variable grades of protection against the convulsant actions of methoxypyridoxine, semicarbazide, and to a lesser degree, pentamethylenetetrazol (Metrazol) and 3,3-methylethylglutarimide (Megimide). Neither pyridoxine nor GABA protected epileptic, brain-operated nonepileptic, or normal monkeys from the convulsant actions of parenteral picrotoxin. No evidence therefore was found in these experiments to support the suggestion that GABA (or pyridoxine) and picrotoxin are antagonistic to each other. experimental epilepsy in Macaca mulatta; gamma aminobutyric acid and vitamin B6 as anticonvulsants Submitted on February 15, 1965


2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Cui Yan Lu ◽  
De Xiang Liu ◽  
Hong Jiang ◽  
Fang Pan ◽  
Cyrus S. H. Ho ◽  
...  

Studies have found that early traumatic experience significantly increases the risk of posttraumatic stress disorder (PTSD). Gamma-aminobutyric acid (GABA) deficits were proposed to be implicated in development of PTSD, but the alterations of GABA receptor A (GABAAR) subunits induced by early traumatic stress have not been fully elucidated. Furthermore, previous studies suggested that exercise could be more effective than medications in reducing severity of anxiety and depression but the mechanism is unclear. This study used inescapable foot-shock to induce PTSD in juvenile rats and examined their emotional changes using open-field test and elevated plus maze, memory changes using Morris water maze, and the expression of GABAAR subunits (γ2,α2, andα5) in subregions of the brain in the adulthood using western blotting and immunohistochemistry. We aimed to observe the role of GABAAR subunits changes induced by juvenile trauma in the pathogenesis of subsequent PTSD in adulthood. In addition, we investigated the protective effects of exercise for 6 weeks and benzodiazepine (clonazepam) for 2 weeks. This study found that juvenile traumatic stress induced chronic anxiety and spatial memory loss and reduced expression of GABAAR subunits in the adult rat brains. Furthermore, exercise led to significant improvement as compared to short-term BZ treatment.


1964 ◽  
Vol 11 (01) ◽  
pp. 064-074 ◽  
Author(s):  
Robert H Wagner ◽  
William D McLester ◽  
Marion Smith ◽  
K. M Brinkhous

Summary1. The use of several amino acids, glycine, alpha-aminobutyric acid, alanine, beta-alanine, and gamma-aminobutyric acid, as plasma protein precipitants is described.2. A specific procedure is detailed for the preparation of canine antihemophilic factor (AHF, Factor VIII) in which glycine, beta-alanine, and gammaaminobutyric acid serve as the protein precipitants.3. Preliminary results are reported for the precipitation of bovine and human AHF with amino acids.


1966 ◽  
Vol 16 (01/02) ◽  
pp. 198-206 ◽  
Author(s):  
W Straughn ◽  
R. H Wagner

SummaryA simple new procedure is reported for the isolation of canine, bovine, porcine, and human fibrinogen. Two molar β-alanine is used to precipitate fibrinogen from barium sulfate adsorbed plasma. The procedure is characterized by dependability and high yields. The material is 95% to 98% clottable protein but still contains impurities such as plasminogen and fibrin-stabilizing factor. Plasminogen may be removed by adsorption with charcoal. The fibrinogen preparations exhibit marked stability to freezing, lyophilization, and dialysis. Epsilon-amino-n-caproic acid and gamma-aminobutyric acid which were also studied have the property of precipitating proteins from plasma but lack the specificity for fibrinogen found with β-alanine.


2019 ◽  
Vol 1 (1) ◽  
pp. 6-12
Author(s):  
Fatima Javeria ◽  
Shazma Altaf ◽  
Alishah Zair ◽  
Rana Khalid Iqbal

Schizophrenia is a severe mental disease. The word schizophrenia literally means split mind. There are three major categories of symptoms which include positive, negative and cognitive symptoms. The disease is characterized by symptoms of hallucination, delusions, disorganized thinking and speech. Schizophrenia is related to many other mental and psychological problems like suicide, depression, hallucinations. Including these, it is also a problem for the patient’s family and the caregiver. There is no clear reason for the disease, but with the advances in molecular genetics; certain epigenetic mechanisms are involved in the pathophysiology of the disease. Epigenetic mechanisms that are mainly involved are the DNA methylation, copy number variants. With the advent of GWAS, a wide range of SNPs is found linked with the etiology of schizophrenia. These SNPs serve as ‘hubs’; because these all are integrating with each other in causing of schizophrenia risk. Until recently, there is no treatment available to cure the disease; but anti-psychotics can reduce the disease risk by minimizing its symptoms. Dopamine, serotonin, gamma-aminobutyric acid, are the neurotransmitters which serve as drug targets in the treatment of schizophrenia. Due to the involvement of genetic and epigenetic mechanisms, drugs available are already targeting certain genes involved in the etiology of the disease.


Diabetes ◽  
1979 ◽  
Vol 28 (7) ◽  
pp. 629-633 ◽  
Author(s):  
H. Taniguchi ◽  
Y. Okada ◽  
H. Seguchi ◽  
C. Shimada ◽  
M. Seki ◽  
...  

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