• Title/Summary/Keyword: Fos expression

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Influences of Postnatal Ginseng radix Administration on Prenatal Noise Stress-induced c-Fos Expression in the Hippocampus of Offspring Rats (태아 중 소음 스트레스가 출생 후 해마 내 c-Fos 발현에 미치는 인삼의 효과)

  • Jang, Jae-chan;Kim, Youn-Sub;Kim, Ji-Hyouck
    • Journal of Oriental Neuropsychiatry
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    • v.17 no.3
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    • pp.1-10
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    • 2006
  • 목적:임신 중 소음 스트레스가 태아에 어떤 영향을 미치는 가를 관찰하고자, 임신 중인 흰쥐에 소음 스트레스를 가한 후 출생한 새끼 흰쥐에 인삼을 투여하여 신경적 발육에 대한, 특히 새끼 흰쥐 해마의 c-Fos 관점에서 연구하였다. 결과:CIA 영역의 c-Fos-positive 세포의수는, 출생 전 소음 스트레스를 받은 대조군에 비해, 10 mg/kg의 인삼을 투여한 군에서 유의성 있는 감소를 보였다. 해마의 CA2, CA3 영역에서의 c-Fos-positive 세포의 수는 10 mg/kg의 인삼을 투여한 그룹에서, 출생 전 소음 스트레스를 받은 대조군에 비해 유의성 있는 감소를 보였다. 해마의 dentate gyrus 영역에서 c-Fos-positive 세포의 수는, 10 mg/kg의 인삼을 투여한 그룹에서, 출생 전 소음 스트레스를 받은 대조군에 비해 유의성 있는 감소를 보였다. 결론: 인삼은 태아기 소음 스트레스로 야기되는 c-Fos의 변화로 인한 해마의 기능장애에 중화제로서 사용될 수 있다. 그리고 임신 중 소음 스트레스를 경험한 엄마의 아이들에 있어서 정신과적 문제를 치료하는데 유용할 것이다.

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Wild Ginseng Attenuates Repeated Morphine-Induced Behavioral Sensitization in Rats

  • Lee, Bom-Bi;Kwon, Sun-Oh;Yeom, Mi-Jung;Shim, In-Sop;Lee, Hye-Jung;Hahm, Dae-Hyun
    • Journal of Microbiology and Biotechnology
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    • v.21 no.7
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    • pp.757-765
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    • 2011
  • Many studies have suggested that the behavioral and reinforcing effects of morphine are induced by hyperactivation of the mesolimbic dopaminergic system, which results in increases in locomotor activity, c-Fos expression in the nucleus accumbens (NAc), and tyrosine hydroxylase (TH) in the ventral tegmental area (VTA). In order to investigate the effect of wild ginseng (WG) on treating morphine addiction, we examined the behavioral sensitization of locomotor activity and c-Fos and TH expression in the rat brain using immunohistochemistry. Intraperitioneal injection of WG (100 and 200 mg/kg), 30 min before administration of a daily injection of morphine (40 mg/kg, s.c.), significantly inhibited morphine-induced increases in c-Fos expression in NAc and TH expression in VTA as well as in locomotor activity, as compared with Panax ginseng. It was demonstrated that the inhibitory effect of WG on the behavioral sensitization after repeated exposure to morphine was closely associated with the reduction of dopamine biosynthesis and postsynaptic neuronal activity. It suggests that WG extract may be effective for inhibiting the behavioral effects of morphine by possibly modulating the central dopaminergic system and that WG might be a useful resource to develop an agent for preventing and treating morphine addiction.

Expression of ATE2 Transcription Factor and the Interaction with AP-1 Factors : BATF, c-Fos, c-Jun (ATF2 전사인자의 발현과 AP-1 전사인자인 BATF, c-Fos, c-Jun과의 이량체 형성)

  • Jang Hye-Young;Kim Jae-Ho
    • Journal of Life Science
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    • v.15 no.6 s.73
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    • pp.928-934
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    • 2005
  • ATF2 is a cellular transcription factor which belongs to the CREB/ATF class and it is leucine zipper protein which generally binds to DNA as dimers. This paper presents the procedure for subcloning the ATF2 gene and the results of experiment used the expressed ATF2. The pET expression vector was used since it produced 6xHis fusion protein for easy purification using affinity column. The Nickel chelating chromatography was used for Purifying the expressed ATE2 from E- codi BL2l. Subsequen시y In vitro binding pull-down assay showed the binding specificity of ATF2 with AP-1 family factors such as BATF, c-Fos, c-Jun and ATF2 itselgf. ATF2 forms homodimer as well as strong heterodimer with BATF. It also forms stable dimer with c-Jun but barely binds with c-Fos.

Inhibitory Effects of Ginseng Saponins on c-fos mRNA Expression and the Proliferation of Rat Aortic Vascular Smooth Muscle Cells Stimulated by Angiotensin II

  • Choi, Woong;Jung, Jin-Young;Kim, Hun-Sik;Yun, Yeo-Pyo;Park, Jong-Dae;Ahn, Hee-Yul
    • The Korean Journal of Physiology and Pharmacology
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    • v.2 no.2
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    • pp.201-207
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    • 1998
  • To evaluate the possibility that the ginseng saponins could be developed as an anti-arteriosclerotic agent, we examined the inhibitory effects of ginseng saponins (total saponin[TS], panaxatriol[PT], panaxadiol[PD]) on the expression of c-fos mRNA and the proliferation of cultured rat aortic vascular smooth muscle cells (VSMCs) stimulated by angiotensin II (Ang II). TS and PT (1.0 mg/ml) suppressed c-fos mRNA induction in VSMCs stimulated by $10^{-5}$ M Ang II. The order of inhibitory potency was PT>TS. Ginseng saponins ($0.01{\sim}1.0$ mg/ml) inhibited the proliferation of VSMCs stimulated by Ang II in a concentration dependent manner, the inhibitory potency was TS>PT>PD at $0.1{\sim}1.0$ mg/ml. These results suggest that ginseng saponins may suppress Ang II-stimulated proliferation of aortic VSMCs which can be seen in atherosclerosis, hypertension and restenosis.

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Effects of Mixture of Lycii Radicis Cortex and Moutan Cortex on Corticotropin-Releasing Factor, c-Fos, and Tyrosine Hydroxylase in Forced Swimming Test (지골피(地骨皮)와 목단피(牧丹皮) 복합제(複合劑)가 강제수영부하실험에서 CRF, c-Fos와 Tyrosine Hydroxylase에 미치는 영향)

  • Sim, Eun-Yeong;Lee, Tae-Hee
    • The Korea Journal of Herbology
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    • v.26 no.2
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    • pp.59-66
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    • 2011
  • Objectives : The goal of this study was to investigate the antidepressant effects of Mixture of Lycii Radicis Cortex and Moutan Cortex on the change of HPA-Axis and Catecholamic system. Methods : We were performed the Forced Swimming Test. The expressions of Corticotropin-Releasing Factor (CRF) and c-Fos at paraventricular nucleus (PVN), and tyrosine hydroxylase (TH) at ventral tegmental area (VTA) and locus coeruleus (LC) were evaluated by immunohistochemical method. Results : The duration of immobility in the Forced Swimming Test was significantly decreased in A100, A400(p<0.05~p<0.01). CRF expressions at PVN was significantly decreased in A400(p<0.05).No other group showed significant difference in expression of c-Fos at PVN comparing with control group. TH expressions at VTA was significantly decreased in A100 and A400, respectively(p<0.001). TH expressions at LC was significantly decreased in A100(p<0.01). Conclusions : According to the above results, Mixture of Lycii Radicis Cortex and Moutan Cortex has antidepressant effects via the reduction of CRF expression and the Catecholamine System activity.

Effects of Acupuncture Stimulation at Different Acupoints on Formalin-Induced Pain in Rats

  • Chang, Kyung Ha;Bai, Sun Joon;Lee, Hyejung;Lee, Bae Hwan
    • The Korean Journal of Physiology and Pharmacology
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    • v.18 no.2
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    • pp.121-127
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    • 2014
  • Acupuncture is the process of stimulating skin regions called meridians or acupoints and has been used to treat pain-related symptoms. However, the pain-relieving effects of acupuncture may be different depending on acupoints. In the present study, the effects of acupuncture on behavioral responses and c-Fos expression were evaluated using a formalin test in male Sprague-Dawley rats in order to clarify the analgesic effects of three different acupoints. Each rat received manual acupuncture at the ST36 (Zusanli), SP9 (Yinlingquan) or BL60 (Kunlun) acupoint before formalin injection. Flinching and licking behaviors were counted by two blinded investigators. Fos-like immunoreactivity was examined by immunohistochemistry in the rat spinal cord. Manual acupuncture treatment at BL60 acupoint showed significant inhibition in flinching behavior but not in licking. Manual acupuncture at ST36 or SP9 tended to inhibit flinching and licking behaviors but the effects were not statistically significant. The acupuncture at ST36, SP9, or BL60 reduced c-Fos expression as compared with the control group. These results suggest that acupuncture especially at the BL60 acupoint is more effective in relieving inflammatory pain than other acupoints.

The Effect of Gongjin-dan on Gliosis in Middle Cerebral Artery Occlusion (MCAO) Rats (공진단이 MCAO모델 흰쥐에서 gliosis 억제에 마치는 영향)

  • Seong, Kee-Moon;Hae, Rae-Kyong;Song, Bong-Keun
    • The Journal of Internal Korean Medicine
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    • v.30 no.4
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    • pp.674-684
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    • 2009
  • Objectives : In conditions of brain infarction, irreversible axon damage occurs in the central nerve system (CNS), because gliosis becomes a physical and a mechanical barrier to axonal regeneration. Reactive gliosis induced by ischemic injury such as middle cerebral artery occlusion is involved with up-regulation of GFAP and CD81. This study was undertaken to examine the effect of the Gongjin-dan (GJD) on CD81 and GFAP expression and its pathway in the rat brain following middle cerebral artery occlusion (MCAO). Methods : In order to study ischemic injuries on the brain, infarction was induced by MCAO using insertion of a single nylon thread, through the internal carotid artery, into a middle cerebral artery. Cresyl violet staining, cerebral infarction size measurement, immunohistochemistry and microscopic examination were used to detect the expression of CD81 and GFAP and the effect on the infarct size and pyramidal cell death in the brain of the rat with cerebral infarction induced by MCAO. Also, c-Fos and ERK expression were measured to investigate the signaling pathway after GJD administration in MCAO rats. Results : Measuring the size of cerebral infarction induced by MCAO in the rat after injection of GJD showed the size had decreased. GJD administration showed pyramidal cell death protection in the hippocampus in the MCAO rat. GJD administration decreased GF AP expression in the MCAO rat. GJD administration decreased CD81 expression in the MCAO rat. GJD administration induced up-regulation of c-FOS expression compared with MCAO. GJD administration induced down-regulation of ERK expression compared with MCAO. Conclusion : We observed that GJD could suppress the reactive gliosis, which disturbs the axonal regeneration in the brain of a rat with cerebral infarction after MCAO by controlling the expression of CD81 and GFAP. The effect may be modulated by the regulation of c-Fos and ERK. These results suggest that GJD can be a candidate to regenerate CNS injury.

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Effect of stimulation-duration of high frequency electroacupuncture on the neuronal activities in the spinal cord and brainstem using Fos immunohistochemical technique (고빈도전침자극(高頻度電鍼刺戟)의 자극시간(刺戟時間)에 따른 중추신경계(中樞神經系) 신경세포(神經細胞)의 활성변화(活性變化)에 미치는 영향(影響))

  • Sohn Sung-Sae;Nam Sang-Soo;Lee Jae-Dong;Choi Do-Young;Ahn Byoung-Choul;Park Dong-Seok;Lee Yun-Ho;Choi Yong-Tae
    • Journal of Acupuncture Research
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    • v.15 no.2
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    • pp.17-28
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    • 1998
  • The present study was designed to investigate the effect of different stimulation-duration of high frequency electroacupuncturet(EA) treatment on the neuronal activities in the spinal cord and brainstem using Fos immunohistochemical technique. Three different stimulus-duration was used in this experiment : 30minutes, 1 hour and 2 hours. The summerized results were summerized as follow : 1. The number of Fos expression was significantly increased in the spinal cord dorsal horn depending upon the increase of stimulus-duration (P<0.05). Otherwise, there was no significant difference between 30 minutes EA treated group and anesthetic control. 2. High frequency EA biphasic stimulation significantly enhanced the Fos expression in the DR, middle and rostral portion of PAG LD, and caudal PAG LV after 1 hour and 2 hours treatment. The number of Fos immunoreactive neuron in the brainstem was increased accorcting to the length of stimulus-duration. Those results indicate that at least 1 hour EA treatment was necessary to increase the neuronal activities in the spinal cord and brainstem. Those basic data from this study can be applied to establish the effective treatment of EA for pain control in the clinical field.

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The Effect of Taping Therapy on the Expression of cFos Protein and Pain Suppression in Acute Ankle Sprain in Rats (흰쥐의 급성 발목삠에서 테이핑요법이 cFos 단백의 발현과 통증억제에 미치는 영향)

  • Choi, Suck-Jun;Byun, Sin-Kyu;Lee, Gyoung-Wan;Kim, Jae-Hyo;Yang, Seung-Bum
    • Korean Journal of Acupuncture
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    • v.34 no.1
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    • pp.1-7
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    • 2017
  • Objectives : The purpose of this study was to evaluate effects of taping therapy on recovery of behavioral symptoms and neural excitability of the lumbar spinal cord in rat model for ankle sprain. Methods : Adult Sprague-Dawley rats was used and divided into 3 experimental groups: normal group(n=6), ankle sprain(n=6), and ankle sprain with taping treatment(n=6). In order to induce ankle sprain the right ankle joint was injured with 4~5 repetitive over-flexions and over-extensions manually. The severity of joint pain was evaluated by measuring foot weight bearing force ratio(FWBRF) of the hind limb and the injury-induced edema formation by diameter of the joint following ankle sprain. The changes of neural excitability in the lumbar spinal cord was tested by observation of cFos protein expression, a metabolic marker for neural excitation. Results : Severity of ankle injury induced in this experiment coincided with Grade 1 ankle sprain. Compared with ankle sprain group, ankle sprain+taping showed a significant reductions of joint pain as well as of edema formation at the ankle joint following ankle sprain. There was significant upregulation of cFos-immunoreactive neurons in the lumbar spinal cord 24 hours after ankle sprain. In contrast, taping therapy resulted in significant inhibition of cFos-immunoreactive neurons in the lumbar spinal cord. Conclusions : Collectively, these results suggest that taping therapy may be an alternative therapeutic intervention for symptom recovery of the mild ankle sprain.

Regulation of Immediate Early Gene Expression by Glutamate Receptor Activation in C6 Rat Glioma Cells

  • Lee, Jin-Koo;Kim, Yung-Hi;Choi, Seong-Soo;Suh, Hong-Won
    • The Korean Journal of Physiology and Pharmacology
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    • v.5 no.1
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    • pp.19-25
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    • 2001
  • We have studied the effects of excitatory amino acids on the expression of the c-fos and c-jun mRNA in rat C6 glioma cells. The glutamate, $N-methyl-_D-aspartate$ (NMDA), and kainic acid (KA) increased c-fos mRNA level in a concentration-dependent manner. However, they did not affect c-jun mRNA level. In addition, forskolin and phorbol 12-myristate 13-acetate (PMA) increased c-fos mRNA level. Furthermore, PMA increased c-jun mRNA level whereas forskolin downregulated c-jun mRNA level. The glutamate, NMDA and KA, at a concentration of 0.25 mM, did not affect the basal c-fos and c-jun mRNA levels, and also did not affect forskolin- and PMA-induced responses. Furthermore, both forskolin and PMA itself increased the phosphorylation of ERK (extracellular signal regulated kinase) and CREB (cyclicAMP responsible element binding protein) proteins. The KA, NMDA, and glutamate did not affect forskolin- induced increase of ERK and CREB phosphorylation. The KA decreased PMA-induced increase of phosphorylation of ERK and CREB proteins, whereas glutamate and NMDA did not affect the phosphorylation of ERK and CREB proteins induced by PMA. These findings suggest that, in C6 glioma cells, c-fos mRNA induction induced by EAAs is not mediated by phosphorylation of ERK and CREB proteins.

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