期刊文献+
共找到2,267篇文章
< 1 2 114 >
每页显示 20 50 100
Relationship of nocturnal concentrations of melatonin, gamma-aminobutyric acid and total antioxidants in peripheral blood with insomnia after stroke: study protocol for a prospective non-randomized controlled trial 被引量:49
1
作者 Wei Zhang Fang Li Tong Zhang 《Neural Regeneration Research》 SCIE CAS CSCD 2017年第8期1299-1307,共9页
Melatonin and gamma-aminobutyric acid(GABA) have been shown to regulate sleep. The nocturnal concentrations of melatonin, GABA and total antioxidants may relate to insomnia in stroke patients. In this prospective si... Melatonin and gamma-aminobutyric acid(GABA) have been shown to regulate sleep. The nocturnal concentrations of melatonin, GABA and total antioxidants may relate to insomnia in stroke patients. In this prospective single-center non-randomized controlled clinical trial performed in the China Rehabilitation Research Center, we analyzed the relationship of nocturnal concentrations of melatonin, GABA and total antioxidants with insomnia after stroke. Patients during rehabilitation of stroke were recruited and assigned to the insomnia group or non-insomnia group. Simultaneously, persons without stroke or insomnia served as normal controls. Each group contained 25 cases. The primary outcome was nocturnal concentrations of melatonin, GABA and total antioxidants in peripheral blood. The secondary outcomes were Pittsburgh Sleep Quality Index, Insomnia Severity Index, Epworth Sleepiness Scale, Fatigue Severity Scale, Morningness-Eveningness Questionnaire(Chinese version), and National Institute of Health Stroke Scale. The relationship of nocturnal concentrations of melatonin, GABA and total antioxidants with insomnia after stroke was analyzed and showed that they were lower in the insomnia group than in the non-insomnia group. The severity of stroke was higher in the insomnia group than in the non-insomnia group. Correlation analysis demonstrated that the nocturnal concentrations of melatonin and GABA were associated with insomnia after stroke. This trial was registered at Clinical Trials.gov, identifier: NCT03202121. 展开更多
关键词 nerve regeneration STROKE INSOMNIA MELATONIN γ-aminobutyric acid total antioxidants sleep-related scales National Institute ofHealth Stroke Scale neural regeneration
下载PDF
Effects of Gamma-Aminobutyric Acid on Performance of Lactating Sows during Heat Weather 被引量:3
2
作者 ZHANG Ming CHEN Li-xlang FAN Zhi-yong WU Ying-song 《Animal Husbandry and Feed Science》 CAS 2009年第11期16-17,共2页
[ Objective] To study the effects of gamma-aminobutyric acid (GABA) on performance of lactating sows during heat stress. [ Metbod] A total of 14 sows at the same parity and with close expected date of childbirth and... [ Objective] To study the effects of gamma-aminobutyric acid (GABA) on performance of lactating sows during heat stress. [ Metbod] A total of 14 sows at the same parity and with close expected date of childbirth and similar body we:,ght were randomly divided into control group and experimental group. They were fed a common basal diet and a GABA (300 mg/kg) supplementary diet, respectively. The trial lasted for 21 d. [ Result ] The daily feed intake, lactation yield and average daily gain of piglets in the experimental group were increased by 9.4%, 28.5% and 10.7%, respectively. The backfat of lactating sows was decreased less, and the same with the weaning-oestrus interval. The survival ratio of piglets was increased by 4.5%. Compared with the control group, the content of lactose and fat increased significantly, but other components almost did not change. [Conclusien] Supplementing GABA in diet can improve the performance of lactating sows and promote the growth of piglets effectively. 展开更多
关键词 gamma-aminobutyric acid Lactating sows PIGLETS PERFORMANCE
下载PDF
Effects of Rhizoma Acori Tatarinowii extracts on gamma-aminobutyric acid type A receptor alpha 1 subunit brain expression during development in a recurrent seizure rat model 被引量:4
3
作者 Liqun Liu Ding'an Mao +4 位作者 Keqiang Chi Xingfang Li Tao Bo Jinming Guo Zhuwen Yi 《Neural Regeneration Research》 SCIE CAS CSCD 2011年第6期412-417,共6页
Extracts from Rhizoma Acori Tatarinowii (Grassleaf Sweetflag Rhizome, Shichangpu) have been shown to improve learning and memory, reduce anxiety, allay excitement, and suppress seizures. Rhizoma Acori Tatarinowii ex... Extracts from Rhizoma Acori Tatarinowii (Grassleaf Sweetflag Rhizome, Shichangpu) have been shown to improve learning and memory, reduce anxiety, allay excitement, and suppress seizures. Rhizoma Acori Tatarinowii extracts interact with y-aminobutyric acid and activate the y-aminobutyric acid type A receptor, although few studies have addressed the precise effects of v-aminobutyric acid type A receptor al subunit. In the present study, y-aminobutyric acid type A receptor al subunit protein expression in the cerebral cortex and hippocampus, and pathological scores of brain injury, were significantly greater following recurrent seizures, but significantly decreased following treatment with Rhizoma Acori Tatarinowii extracts. These results indicated that Rhizoma Acori Tatarinowii extracts down-regulated y-aminobutyric acid type A receptor al subunit protein expression in the cerebral cortex and hippocampus and protected seizure-induced brain injury during development. 展开更多
关键词 SEIZURE brain injury y-aminobutyric acid A receptor CORTEX HIPPOCAMPUS extracts of Rhizoma Acori Tatarinowii
下载PDF
Hippocampal and cortical expression of gamma-aminobutyric acid transporter 1 and glial fibrillary acidic protein in pentylenetetrazol-induced chronic epileptic rats 被引量:2
4
作者 Yi Zeng Zhong Yang +1 位作者 Xiaodong Long Chao You 《Neural Regeneration Research》 SCIE CAS CSCD 2009年第3期194-199,共6页
BACKGROUND: Gamma-aminobutyric acid transporter plays an important role in gamma-aminobutyric acid metabolism, and is highly associated with epilepsy seizures. Pathologically, astrocytes release active substances tha... BACKGROUND: Gamma-aminobutyric acid transporter plays an important role in gamma-aminobutyric acid metabolism, and is highly associated with epilepsy seizures. Pathologically, astrocytes release active substances that alter neuronal excitability, and it has been demonstrated that astrocytes play a role in epileptic seizures. OBJECTIVE: To observe changes in gamma-aminobutyric acid transporter 1 and glial fibrillary acidic protein expression in the hippocampus and cortex of the temporal lobe in rats with pentylenetetrazol-induced chronic epilepsy. DESIGN, TIME AND SETTING: Randomized, controlled, animal experiment was performed at the Department of Neurobiology, Third Military University of Chinese PLA between January 2006 and December 2007. MATERIALS: Pentylenetetrazol was purchased from Sigma, USA; rabbit anti-rat gammaaminobutyric acid transporter 1 and glial fibrillary acidic protein were from Chemicon, USA. METHODS: A total of 40 Sprague Dawley rats were divided into model and control groups. Rat models of chronic epilepsy were created by pentylenetetrazol kindling, and were subdivided into 3-, 7-, and 14-day kindling subgroups. MAIN OUTCOME MEASURES: Gamma-aminobutyric acid transporter 1 and glial fibrillary acidic protein expression, as well as the number of positive cells in the hippocampus and cortex of temporal lobe of rats, were determined by immunohistochemistry and Western blot analyses. RESULTS: Compared with the control group, the number of gamma-aminobutyric acid transporter 1 and glial fibrillary acidic protein -positive cells in the hippocampus and cortex of rats with pentylenetetrazol-induced epilepsy significantly increased, gamma-aminobutyric acid transporter 1 and glial fibrillary acidic protein expression increased after 3 days of kindling, reached a peak on day 7, and remained at elevated levels at day 14 (P〈 0.05). CONCLUSION: Astrocytic activation and gamma-aminobutyric acid transporter 1 overexpression may contribute to pentylenetetrazol-induced epilepsy. 展开更多
关键词 EPILEPSY glial fibrillary acidic protein gamma-aminobutyric acid transporter 1 oentvlenetetrazol astrocvte
下载PDF
Expression of gamma-aminobutyric acid type A receptor α_2 subunit in the dorsal root ganglion of rats with sciatic nerve injury 被引量:1
5
作者 Yu Lian Yang Wang +5 位作者 Ketao Ma Lei Zhao Zhongshuang Zhang Yuanyuan Shang Junqiang Si Li Li 《Neural Regeneration Research》 SCIE CAS CSCD 2012年第32期2492-2499,共8页
The γ-aminobutyric acid neurotransmitter in the spinal cord dorsal horn plays an important role in pain modulation through primary afferent-mediated presynaptic inhibition. The weakening of γ-aminobutyric acid-media... The γ-aminobutyric acid neurotransmitter in the spinal cord dorsal horn plays an important role in pain modulation through primary afferent-mediated presynaptic inhibition. The weakening of γ-aminobutyric acid-mediated presynaptic inhibition may be an important cause of neuropathic pain. γ-aminobutyric acid-mediated presynaptic inhibition is related to the current strength of γ-aminobutyric acid A receptor activation. In view of this, the whole-cell patch-clamp technique was used here to record the change in muscimol activated current of dorsal root ganglion neurons in a chronic constriction injury model. Results found that damage in rat dorsal root ganglion neurons following application of muscimol caused concentration-dependent activation of current, and compared with the sham group, its current strength and γ-aminobutyric acid A receptor protein expression decreased. Immunofluorescence revealed that γ-aminobutyric acid type A receptor α2 subunit protein expression decreased and was most obvious at 12 and 15 days after modeling. Our experimental findings confirmed that the y-aminobutyric acid type A receptor α2 subunit in the chronic constriction injury model rat dorsal root ganglion was downregulated, which may be one of the reasons for the reduction of injury in dorsal root ganglion neurons following muscimol-activated currents. 展开更多
关键词 γ-aminobutyric acid γ-aminobutyric acid type A receptor α2 subunit neuropathic pain dorsal root ganglion whole-cell patch clamp IMMUNOFLUORESCENCE primary afferent depolarization paw withdrawal latency MUSCIMOL
下载PDF
Effect of propofol on the reactivity of acetylcholinesterase,N-methyl-D-aspartate receptors,and gamma-aminobutyric acid receptors in the hippocampus of aged rats after chronic cerebral ischemia 被引量:1
6
作者 Gang Chen Jiangbei Cao Weidong Mi 《Neural Regeneration Research》 SCIE CAS CSCD 2011年第17期1291-1295,共5页
We induced ischemic brain injury in aging rats to examine the effects of varying doses of propofol on hippocampal activities of acetylcholinesterase, N-methyI-D-aspartate receptors, and y-aminobutyric acid receptors. ... We induced ischemic brain injury in aging rats to examine the effects of varying doses of propofol on hippocampal activities of acetylcholinesterase, N-methyI-D-aspartate receptors, and y-aminobutyric acid receptors. Propofol exhibited no obvious impact on acetylcholinesterase activity, but directly activated the y-aminobutyric acid receptor. The neuroprotective function of propofol on the hippocampus of aging rats following cerebral ischemic injury may be related to altered activities of y-aminobutyric acid receptors and N-methyI-D-aspartate receptors. 展开更多
关键词 PROPOFOL brain injury ACETYLCHOLINESTERASE y-aminobutyric acid receptor N-methyi-D-asparLate receptor aging rat
下载PDF
Gamma-aminobutyric acid A receptor and N-methyl-D-aspartate receptor subunit expression in rat spiral ganglion neurons 被引量:2
7
作者 Xiaolan Tang Meng Gao Shuang Feng Jiping Su 《Neural Regeneration Research》 SCIE CAS CSCD 2010年第13期1020-1024,共5页
BACKGROUND: Gamma-aminobutyric acid A (GABAA) and N-methyl-D-aspartate (NMDA) receptors are significant receptors in the central nervous system. An understanding of GABAA and NMDA receptor expression in spiral ga... BACKGROUND: Gamma-aminobutyric acid A (GABAA) and N-methyl-D-aspartate (NMDA) receptors are significant receptors in the central nervous system. An understanding of GABAA and NMDA receptor expression in spiral ganglion neurons (SGN) provides information for the functional role of these receptors in the auditory system. OBJECTIVE: To investigate mRNA expression of GABAA receptor (GABAAR) and NMDA receptor (NMDAR) subunits in the rat SGN. DESIGN, TIME AND SETTING: This in vitro, molecular biological study was performed at the Laboratory of Otolaryngology-Head and Neck Surgery, Guangxi Medical University, China from July 2007 to May 2008. MATERIALS: Reverse Transcriptase Kit and Taq DNA polymerase were purchased from Fermentas Burlington, ON, Canada; GABAAR and NMDAR primers were purchased from Shanghai Sangon, Shanghai, China. METHODS: SGN from 3-5 day postnatal Wistar rats was collected for primary cultures, mRNA expression of GABAAR and NMDAR subunits in the SGN was determined by reverse transcription polymerase chain reaction. MAIN OUTCOME MEASURES: Expression levels of GABAAR and NMDAR subunits were determined by quantitative analysis. RESULTS: GABAAR subunits (αl 6, β1 3, and y1 3) and NMDAR subunits (NR1, NR2A, NR2B, NR2C, NR2D, NR3A, and NR3B) were detected in the SGN. In α subunit genes of GABAAR, α1 and α3 expression was similar (P 〉 0.05) and greater than the other subunits. Of the β subunit genes, β1 subunit mRNA levels were greater than β2 and β3. Of the y subunit genes, y2 subunit mRNA levels were greater than y1 and y3. NR1 mRNA expression was the greatest of NMDAR subunits. CONCLUSION: GABAAR subunits (α1 6, β1-3, and y1-3) and NMDAR subunits (NR1, NR2A, NR2B, NR2C, NR2D, NR3A, and NR3B) were expressed in the rat SGN. Through comparison of GABAAR and NMDAR subunit expression, possible GABAAR combinations, as well as highly expressed subunit combinations, were estimated, which provided information for pharmacological and electrophysiological characteristics of GABAAR in the auditory system. 展开更多
关键词 spiral ganglion neuron gamma-aminobutyric acid A receptor N-methyl D-aspartate receptor reverse transcription polymerase chain reaction neural regeneration
下载PDF
Electroacupuncture (EA) Speeds Up the Regulation of Hypothalamic Pituitary Adrenal Axis Dysfunction in Acute Surgical Trauma Rats: Mediated by Hypothalamic Gamma-Aminobutyric Acid (GABA)<sub>A</sub>Receptors 被引量:1
8
作者 Liting Zhu Jing Zhu +5 位作者 Zhejun Chen Zehui Meng Mingda Ju Mizhen Zhang Gencheng Wu Zhanzhuang Tian 《Journal of Behavioral and Brain Science》 2018年第12期697-710,共14页
Hypothalamic Corticotropin-releasing factor (CRF) directly activates the hypothalamic pituitary adrenal axis (HPA axis) during the surgical trauma induced stress response. Electroacupuncture (EA) has been demonstrated... Hypothalamic Corticotropin-releasing factor (CRF) directly activates the hypothalamic pituitary adrenal axis (HPA axis) during the surgical trauma induced stress response. Electroacupuncture (EA) has been demonstrated to have stress relieving effects in breast surgery, colorectal surgery, prostatectomy and craniotomy. This study was aimed to investigate the hypothesis that EA could regulate hypothalamic CRF in surgical trauma rats. In experiment one, Sprague-Dawley (SD) male rats were divided into intact, model (10% partial hepatectomy), sham EA and EA group. Rats from the Sham EA and EA group were stimulated at ST36-Zusanli and SP6-Sanyiniiao acupoints twice, 24 hours before the surgery and immediately after the surgery. Expressions of hypothalamic CRF and CRFR, GABA receptors, glutamate decarboxylase (GAD), serum adrenocorticotropic hormone (ACTH) and Corticosterone (CORT) were observed at 2, 4, 8 and 24 h after the surgery by radioimmunoassay (RIA), western blot, real-time PCR and immunohistochemistry. In the experiment two, SD male rats were divided into the intact, model, model + vehicle, model + L-838,417 EA and EA + L838,417 group. It was found that hypothalamus CRF, serum ACTH and CORT levels were increased in model group compared with the intact group, and those in the EA group decreased in comparison with the model group. Compared with the model group, hypothalamus-aminobutyric acid (GABA) receptor Aα3 mRNA and protein expressions of the EA group raised strikingly. In conclusion, EA alleviated surgical stress response by improving the GABA synthesis in hypothalamus, thus enhancing GABA receptors’ inhibitory regulation of the HPA axis dysfunction in rats with acute surgical trauma. 展开更多
关键词 ELECTROACUPUNCTURE HYPOTHALAMIC Pituitary Adrenal Axis γ-aminobutyric acid (GABA) Receptor CORTICOTROPIN Releasing Factor Surgery
下载PDF
Effects of gamma-aminobutyric acid receptors on muscarinic receptor-mediated free calcium ion levels in the facial nucleus following facial nerve injury
9
作者 Guangfeng Jiang Dawei Sun +4 位作者 Rui Zhou Fugao Zhu Yanqing Wang Xiuming Wan Banghua Liu 《Neural Regeneration Research》 SCIE CAS CSCD 2011年第11期855-859,共5页
Muscarinic receptors and nicotine receptors can increase free calcium ion levels in the facial nucleus via different channels following facial nerve injury. In addition, γ-aminobutyric acid A (GABAA) receptors have... Muscarinic receptors and nicotine receptors can increase free calcium ion levels in the facial nucleus via different channels following facial nerve injury. In addition, γ-aminobutyric acid A (GABAA) receptors have been shown to negatively regulate free calcium ion levels in the facial nucleus by inhibiting nicotine receptors. The present study investigated the influence of GABAA, γ-aminobutyric acid B (GABAB) and C (GABAc) receptors on muscarinic receptors in rats with facial nerve injury by confocal laser microscopy. GABAA and GABAB receptors exhibited significant dose-dependent inhibitory effects on increased muscarinic receptor-mediated free calcium ion levels following facial nerve injury. Results showed that GABAA and GABAB receptors negatively regulate muscarinic receptor effects and interplay with cholinergic receptors to regulate free calcium ion levels for facial neural regeneration. 展开更多
关键词 injury of facial nerve γ-aminobutyric acid A receptor γ-aminobutyric acid B receptor muscarinic receptor facial nucleus calcium ion peripheral nerve injury neural regeneration
下载PDF
Effects of progesterone on glutamate transporter 2 and gamma-aminobutyric acid transporter 1 expression in the developing rat brain after recurrent seizures
10
作者 Lingjuan Liu Dingan Mao Liqun Liu Yu Huang Tao Bo 《Neural Regeneration Research》 SCIE CAS CSCD 2012年第26期2036-2042,共7页
Seizures were induced by flurothyl inhalation. Rats were intramuscularly treated with progesterone after each seizure. Results demonstrated that glutamate transporter 2 and y-aminobutyric acid transporter 1 expression... Seizures were induced by flurothyl inhalation. Rats were intramuscularly treated with progesterone after each seizure. Results demonstrated that glutamate transporter 2 and y-aminobutyric acid transporter 1 expression levels were significantly increased in the cerebral cortex and hippocampus of the developing rat brain following recurrent seizures. After progesterone treatment, glutamate transporter 2 protein expression was upregulated, but ^-aminobutyric acid transporter 1 levels decreased. These results suggest that glutamate transporter 2 and y-aminobutyric acid transporter 1 are involved in the pathological processes of epilepsy. Progesterone can help maintain a balance between excitatory and inhibitory systems by modulating the amino acid transporter system, and protect the developing brain after recurrent seizures. 展开更多
关键词 PROGESTERONE seizure transporter glutamate ^-aminobutyric acid
下载PDF
Silencing gamma-aminobutyric acid A receptor alpha 1 subunit expression and outward potassium current in developing cortical neurons
11
作者 Tao Bo Jiang Li Jian Li Xingfang Li Kaihui Xing 《Neural Regeneration Research》 SCIE CAS CSCD 2011年第18期1404-1409,共6页
We used RNA interference (RNAi) to disrupt synthesis of the cortical neuronal y-aminobutyric acid A receptor (GABAAR) al in rats during development, and measured outward K+ currents during neuronal electrical act... We used RNA interference (RNAi) to disrupt synthesis of the cortical neuronal y-aminobutyric acid A receptor (GABAAR) al in rats during development, and measured outward K+ currents during neuronal electrical activity using whole-cell patch-clamp techniques. Three pairs of small interfering RNA (siRNA) for GABAAR al subunit were designed using OligoEngine RNAi software. This siRNA was found to effectively inhibited GABAAR al mRNA expression in cortical neuronal culture in vitro, but did not significantly affect neuronal survival. Outward K^currents were decreased, indicating that GABAAR al subunits in developing neurons participate in neuronal function by regulating outward K+ current. 展开更多
关键词 γ-aminobutyric acid A receptor al subunit NEURON development outward potassium current
下载PDF
Sodium glutamate and gamma-aminobutyric acid affect iron metabolism in the rat caudate putamen
12
作者 Na Wang Peng Guan +3 位作者 Fei Li Yujian Fu Xianglin Duan Yanzhong Chang 《Neural Regeneration Research》 SCIE CAS CSCD 2010年第21期1644-1649,共6页
Glutamic acid and gamma-aminobutyric acid (GABA) influence iron content in the substantia nigra and globus pallidus, although the mechanisms of action remain unclear. The present study measured iron content and chan... Glutamic acid and gamma-aminobutyric acid (GABA) influence iron content in the substantia nigra and globus pallidus, although the mechanisms of action remain unclear. The present study measured iron content and changes in divalent metal transporter 1 (DMT1) and hephaestin expression in the substantia nigra and caudate putamen, and explored the effects of GABA and glutamic acid on iron metabolism. Results demonstrated that iron content and DMT1 non iron response element [DMT1 (-IRE)] expression were significantly greater but hephaestin expression was significantly lower in the caudate putamen of the monosodium glutamate group compared with the control group. No significant difference in iron content was detected between the GABA and control groups. DMT1 (-IRE) expression was significantly reduced, but hephaestin expressiori was significantly increased in the GABA group compared with the control group. In addition, there was no significant difference in tyrosine hydroxylase expression between monosodium glutamate and GABA groups and the control group. These results suggested that glutamate affected iron metabolism in the caudate putamen by increasing DMTI(-IRE) and decreasing hephaestin expression. In addition, GABA decreased DMT1 (-IRE) expression in the caudate putamen. 展开更多
关键词 GLUTAMATE gamma-aminobutyric acid tyrosine hydroxylase divalent metal transporter 1 non iron response element HEPHAESTIN
下载PDF
Effect of brain-derived neurotropic factor released from hypoxic astrocytes on gamma-aminobutyric acid type A receptor function in normal hippocampal neurons
13
作者 Hongliang Liu Tijun Dai 《Neural Regeneration Research》 SCIE CAS CSCD 2011年第25期1954-1959,共6页
Astrocytes can release increased levels of brain-derived neurotrophic factor during cerebral ischemia, but it is unclear whether brain-derived neurotrophic factor affects y-aminobutyric acid type A receptor function i... Astrocytes can release increased levels of brain-derived neurotrophic factor during cerebral ischemia, but it is unclear whether brain-derived neurotrophic factor affects y-aminobutyric acid type A receptor function in normal neurons. Results from this study demonstrated that y-aminobutyric acid at 100 pmol/L concentration raised the intracellular calcium level in neurons treated with medium from cultured hypoxic astrocytes, and the rise in calcium level could be inhibited by y-aminobutyric acid type A receptor antagonist bicuculline or brain-derived neurotrophic factor receptor antagonist k252a, y-aminobutyric acid type A-gated current induced by 100 IJmol/L y-aminobutyric acid was in an inward direction in physiological conditions, but shifted to the outward direction in neurons when treated with the medium from cultured hypoxic astrocytes, and this effect could be inhibited by k252a. The reverse potential was shifted leftward to -93 mV, which could be inhibited by k252a and Na+-K+-CI cotransporter inhibitor bumetanide. Brain-derived neurotrophic factor was released from hypoxic astrocytes at a high level. It shifted the reverse potential of y-aminobutyric acid type A-gated currents leftward in normal neurons by enhancing the function of Na+-K+-CI- cotransporter, and caused y-aminobutyric acid to exert an excitatory effect by activating y-aminobutyric acid type A receptor. 展开更多
关键词 brain-derived neurotrophic factor hypoxia ASTROCYTES neurons y-aminobutyric acid type A receptor Na+-K+-CI cotransporter
下载PDF
Immunohisto chemical Study on the Effects of Pyrethroids on Gluta-mate and γ-Aminobutyric Acid in Rat Central Nervous System 被引量:68
14
作者 Wu Jianping, Lu Chun\+1, Wang Ying, et al. Wu Jianping, Lu Chun\+1, Wang Ying, et al. Institute of Toxicology, Nanjing Medical University, Nanjing\ 210029 Acta Universitatis Medicinalis Nanjing,19(6):450 《The Journal of Biomedical Research》 CAS 1999年第2期89-89,共1页
Objective\ In order to study the effects of pyrethroids on glutamate (Glu) and gamma aminobutyric acid (GABA) in rat central nervous system. Methods\ Male SD rats were treated with permethrin (7 mg/kg, i.p) or cyperm... Objective\ In order to study the effects of pyrethroids on glutamate (Glu) and gamma aminobutyric acid (GABA) in rat central nervous system. Methods\ Male SD rats were treated with permethrin (7 mg/kg, i.p) or cypermethrin (70 mg/kg, i.p) once a day for 3 days. Glu and GABA immunoreactive cells and transmitters in CNS were studied by immunohistochemical method. Results\ The total number, percentage of positive area and integral optical density of glutamate immunoreactive cell in cerebral cortex, hippocampus decreased significantly in permethrin or cypermethrin, while GABA was enhanced. Cypermethrin is more tent than permethrin on either Glu or GABA. Conclusion\ Disturbance of Glu and GABA is likely to play a role in the development of pyrethroids excitatory neurotoxicity. 展开更多
关键词 aminobutyric acid in Rat Central Nervous System
下载PDF
Effect of Propofol on Glutamate and γ-aminobutyric Acid Release from Rat Hippocampal Synaptosomes 被引量:2
15
作者 尚游 姚尚龙 +2 位作者 曾因明 刘红亮 曹君利 《Journal of Huazhong University of Science and Technology(Medical Sciences)》 SCIE CAS 2005年第6期700-702,共3页
To investigate the effect of propofol on the release of glutamate and γ-aminobutyric acid (GABA) from rat hippocampal synatosomes, synaptosomes was made from hippocampus and incubated with artificial cerebrospinal ... To investigate the effect of propofol on the release of glutamate and γ-aminobutyric acid (GABA) from rat hippocampal synatosomes, synaptosomes was made from hippocampus and incubated with artificial cerebrospinal fluid (aCSF). With the experiment of Ca^2+-dependent release of glutamate and GABA, dihydrokainic acid (DHK) and nipectic acid were added into aCSF. For the observation of Ca^2+-independent release of glutamate and GABA, no DHK, nipectic acid and Ca^2+ were added from aCSF. The release of glutamate and GABA were evoked by 20 μmol/L veratridine or 30 mmol/L KCh The concentration of glutamate and GABA in aCSF was measured by using high-performance liquid chromatography (HPLC). 30, 100 arid 300 μmol/L propofol significantly inhibited veratridine-evoked Ca^2+-dependent release of glutamate and GABA (P〈0. 01 or P〈0. 05), However, propofol showed no effect on elevated KCl-evoked Ca^2+-dependent release of glutamate and GABA (P〉0, 05), Veratridine or elevated KCI evoked Ca^2+-independent release of glutamate and GABA was not affected significantly by propofol (P〉0.05). Propofol could inhibit Ca^2+- dependent release of glutamate and GABA, However, it has no effect on the Ca^2+-independent release of glutamate and GABA, 展开更多
关键词 PROPOFOL HIPPOCAMPUS SYNAPTOSOME GLUTAMATE γ-aminobutyric acid
下载PDF
On-line near-infrared spectroscopy optimizing and monitoring biotransformation process of γ-aminobutyric acid 被引量:2
16
作者 Guoyu Ding Yuanyuan Hou +3 位作者 Jiamin Peng Yunbing Shen Min Jiang Gang Bai 《Journal of Pharmaceutical Analysis》 SCIE CAS 2016年第3期171-178,共8页
Near-infrared spectroscopy (NIRS) with its fast and nondestructive advantages can be qualified for the real-time quantitative analysis. This paper demonstrates that NIRS combined with partial least squares (PLS) r... Near-infrared spectroscopy (NIRS) with its fast and nondestructive advantages can be qualified for the real-time quantitative analysis. This paper demonstrates that NIRS combined with partial least squares (PLS) regression can be used as a rapid analytical method to simultaneously quantify L-glutamic acid (L- GIu) and γ-aminobutyric acid (GABA) in a biotransformation process and to guide the optimization of production conditions when the merits of NIRS are combined with response surface methodology. The high performance liquid chromatography (HPLC) reference analysis was performed by the o-phthaldialdehyde pre-column derivatization. NIRS measurements of two batches of 141 samples were firstly analyzed by PLS with several spectral pre-processing methods. Compared with those of the HPLC reference analysis, the resulting determination coefficients (R2), root mean square error of prediction (RMSEP) and residual predictive deviation (RPD) of the external validation for the L-GIu concentration were 99.5%, 1.62 g/L, and 11.3, respectively. For the GABA concentration, R2, RMSEP, and RPD were 99.8%, 4.00 g/L, and 16.4, respectively. This NIRS model was then used to optimize the biotransformation process through a Box- Behnken experimental design. Under the optimal conditions without pH adjustment, 200 gjL L-GIu could be catalyzed by 7148 U/L glutamate decarboxylase (GAD) to GABA, reaching 99% conversion at the fifth hour. NIRS analysis provided timely information on the conversion from L-GIu to GABA. The results suggest that the NIRS model can not only be used for the routine profiling of enzymatic conversion, providing a simple and effective method of monitoring the biotransformation process of GABA, but also be considered to be an optimal tool to guide the optimization of production conditions. 展开更多
关键词 Near-intrared spectroscopy L-glutamic acid γ-aminobutyric acid Box-Behnken design Glutamate decarboxylase
下载PDF
γ-胺基丁酸(γ-aminobutyric acid,GABA)在保健品之应用 被引量:2
17
作者 张忆如 《中国食品添加剂》 CAS 北大核心 2013年第S1期285-289,共5页
γ-胺基丁酸(γ-aminobutyric acid,GABA)是非蛋白质类的氨基酸,对哺乳动物而言,为一种存在于中枢神经系统(central nervous system)与周边组织中的抑制性神经传导物质,扮演抑制大脑的神经传导与镇定作用的角色。GABA被认为对人体健康... γ-胺基丁酸(γ-aminobutyric acid,GABA)是非蛋白质类的氨基酸,对哺乳动物而言,为一种存在于中枢神经系统(central nervous system)与周边组织中的抑制性神经传导物质,扮演抑制大脑的神经传导与镇定作用的角色。GABA被认为对人体健康有许多好处,包含降血压、调解血糖、帮助睡眠与舒缓神经以及调整免疫等功能,所以被视为机能性食品添加物。γ-胺基丁酸生产工艺包含化学合成与微生物发酵转换,其中以乳酸菌的转换而成的γ-胺基丁酸,兼具安全与高产的特性。生合集团是一家具专业发酵制程与开发乳酸菌能力的企业,生产高纯度的γ-胺基丁酸,具备耐酸碱、耐高温、耐高压与易溶水的特点,其配伍性高,可添加在各种食品、饮品或保健品上,增加产品的价值,便于推广。 展开更多
关键词 γ-胺基丁酸 食品应用 保健品
下载PDF
Motor inhibition efficiency in healthy aging: the role of γ-aminobutyric acid 被引量:1
18
作者 Lisa Pauwels Celine Maes +1 位作者 Lize Hermans Stephan P.Swinnen 《Neural Regeneration Research》 SCIE CAS CSCD 2019年第5期741-744,共4页
The ability to cancel a motor response is critical for optimal functioning in various facets of daily life. Hence, efficient inhibitory motor control is a key function throughout the lifespan. Considering the fact tha... The ability to cancel a motor response is critical for optimal functioning in various facets of daily life. Hence, efficient inhibitory motor control is a key function throughout the lifespan. Considering the fact that inhibitory motor function gradually declines with advancing age, it is not surprising that the study of motor inhibition in this age group is gaining considerable interest. In general, we can distinguish between two prominent types of motor inhibition, namely proactive and reactive inhibition. Whereas the anticipation for upcoming stops(proactive inhibition) appears readily preserved at older age, the ability to stop an already planned or initiated action(reactive inhibition) generally declines with advancing age. The differential impact of aging on proactive and reactive inhibition at the behavioral level prompts questions about the neural architecture underlying both types of inhibitory motor control. Here we will not only highlight the underlying structural brain properties of proactive and reactive inhibitory control but we will also discuss recent developments in brain-behavioral approaches, namely the registration of neurochemical compounds using magnetic resonance spectroscopy. This technique allows for the direct detection of the primary inhibitory neurotransmitter in the brain, i.e., γ-aminobutyric acid, across the broader cortical/subcortical territory, thereby opening new perspectives for better understanding the neural mechanisms mediating efficient inhibitory control in the context of healthy aging. Ultimately, these insights may contribute to the development of interventions specifically designed to counteract age-related declines in motor inhibition. 展开更多
关键词 PROACTIVE INHIBITION reactive INHIBITION motor INHIBITION healthy aging gamma-aminobutyric acid magnetic resonance spectroscopy GABA INHIBITORY NEUROTRANSMITTER NEUROIMAGING
下载PDF
Γ-Aminobutyric acid promotes methionine-choline deficient diet-induced nonalcoholic steatohepatitis 被引量:1
19
作者 Yoon Seok Roh Ara Cho +6 位作者 Zixiong Zhou Hyuneui Jeong Jeong-Eun Park Youn-Soo Cha Suk-Heung Oh Chae-Woong Lim Bumseok Kim 《The Journal of Biomedical Research》 CAS CSCD 2017年第1期65-73,共9页
Nonalcoholic steatohepatitis(NASH) is one of the most common liver diseases and a major cause of liver fibrosis worldwide.r-Aminobutyric acid(GABA) is one of the most abundant inhibitory neurotransmitters in the c... Nonalcoholic steatohepatitis(NASH) is one of the most common liver diseases and a major cause of liver fibrosis worldwide.r-Aminobutyric acid(GABA) is one of the most abundant inhibitory neurotransmitters in the central nervous system.Recently,it has been reported that GABAergic signaling pathways are found in various non-neuronal tissues including the immune system and play a functional role.In the present study,we investigated whether administration of GABA has effects on NASH through its immunomodulatory effects.To test this hypothesis,C57BL/6 mice were fed a methionine-choline-deficient(MCD) diet for 8 weeks.After four weeks into MCD feeding,mice were provided with plain water(control) or water containing 2 mg/mL of GABA for the subsequent 4 weeks.Using this MCD diet-induced NASH model,we found that mice receiving GABA showed more severe steatohepatitis and liver fibrosis than control mice.This increased liver damage was confirmed by higher levels of serum alanine transaminase(ALT) and aspartate aminotransferase(AST) compared to the control group.In accordance with increased liver steatohepatitis,NASH-related and inflammatory gene expression(collagen al,tissue inhibitor of metalloproteinase-1,TNF-α) in the liver was markedly increased in GABA-treated mice.Furthermore,GABA directly enhanced production of inflammatory cytokines including IL-6 and TNF-α in LPS activated RAW macrophage cells and increased TIB-73 hepatocyte death.Such effects were abolished when GABA was treated with bicuculline,a competitive antagonist of GABA receptors.These results suggest that oral administration of GABA may be involved in changes of the liver immune milieu and conferred detrimental effects on NASH progression. 展开更多
关键词 Γ-aminobutyric acid nonalcoholic steatohepatitis methionine-choline-deficient diet mice GABA
下载PDF
Synthesis and Anticonvulsant Activity of γ-Aminobutyric Acid Derivatives
20
作者 Mu YUAN Yu Guo ZHONG +1 位作者 Qi Jie PANG(Department of Pharmacy, Guiyang Medical College, Gujyang 550004 School of Pharmacy, West China University of Medical Sciences, Chengdu 610044) 《Chinese Chemical Letters》 SCIE CAS CSCD 1998年第4期369-371,共3页
Under physiological conditions, γ-aminobutyric acid poorly crosses the blood-brain barrier. It is likely that a non-toxic derivative of γ-aminobutyric acid which enters the brain easily will have useful anticonvulsa... Under physiological conditions, γ-aminobutyric acid poorly crosses the blood-brain barrier. It is likely that a non-toxic derivative of γ-aminobutyric acid which enters the brain easily will have useful anticonvulsant activity. 16 derivatives of γ-aminobutyric acid with an imine link to a lipophilic carrier were prepared and tested for anticonvulsant activity; six compounds show anticonvulsant activity. 展开更多
关键词 γ-aminobutyric acid SYNTHESIS anticonvulsant activity
下载PDF
上一页 1 2 114 下一页 到第
使用帮助 返回顶部