• Title/Summary/Keyword: Cerebral activity

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A Systematic Review of the Intervention Study to Improve Participation of Children With Cerebral Palsy (뇌성마비 아동의 참여증진을 목표로 한 중재연구에 관한 체계적 고찰)

  • Kim, Se-Yun
    • Journal of the Korea Convergence Society
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    • v.11 no.2
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    • pp.289-296
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    • 2020
  • The purpose of this study was to identify article measuring treatment outcome for children with Cerebral Palsy in participation. The 6 database included EBSCohost was used for literature search. Key words for search strategy were "Cerebral Palsy and Children and Participation and Interventions". A total of 11 studies were searched and studies of evidence level I was 6(54.5%), studies of intervention method focused on physical function, activity and participation was 7(63.7%). The dependent variables of 2 studies(18.2%) were body structure and function, activity and participation, that of 4 studies(36.4%) were both body structure and function and participation, that of 3 studies(27.3%) were activity and participation, that of 2 studies(18.2%) were only participation. The COPM were used in 5 studies(45.5%).

Effects of the 3D Visual Feedback Exercise with Action Observation on the Posture Alignment and Cerebral Cortex Activation in Forward Head Posture (3D 시각적 피드백과 동작관찰을 이용한 운동이 전방머리자세의 자세 정렬과 대뇌겉질 활성도에 미치는 영향)

  • Kang, Hyojeong;Yang, Hoesong;Kim, Minkyu
    • Journal of The Korean Society of Integrative Medicine
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    • v.8 no.1
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    • pp.113-124
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    • 2020
  • Purpose : The purpose of this study was to investigate the effects of exercise intervention combined with 3D visual feedback and motion observation on postural alignment and cerebral cortical activity in subjects with forward head posture (FHP). Methods : The study included 28 participants with FHP, randomly divided into a 3D visual feedback plus motion observation group (n=14) or control group (n=14). The experimental group received corrective exercise combined with 3D visual feedback and motion observation for FHP, three times a week for four weeks. We examined cervical spine radiographs in the lateral standing position with both arms crossed to measure the craniovertebral angle (CVA) and cervical lordosis (CL). Relative alpha (RA) and beta waves (RB) were measured by wireless dry EEG. Results : The CVA value was significantly different between the groups, and the CL value was significantly different only in the experimental group. RA and RB values were not significantly different before and after intervention in the control group. RB values were significantly decreased before and after intervention in the experimental group. Conclusion : Based on the results of this study, we suggest that interventions combined with motion observation and 3D visual feedback may be effective as exercise methods to improve postural alignment and cerebral activity in subjects with FHP. Further research is required to generalize our results on technical supplementation complemented with 3D visual feedback devices.

Effects of (-)-Epigallocatechin-3-gallate on Brain Infarction and the Activity Change of Matrix Metalloproteinase-9 Induced by Middle Cerebral Artery Occlusion in Mice

  • Qian, Yong-Ri;Kook, Ji-Hyun;Hwang, Shin-Ae;Kim, Do-Kyung;Kim, Jong-Keun
    • The Korean Journal of Physiology and Pharmacology
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    • v.11 no.3
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    • pp.85-88
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    • 2007
  • Matrix metalloproteinases (MMPs) can degrade a wide range of extracellular matrix components. It has been reported that MMP-9 are activated after focal ischemia in experimental animals. (-)-Epigallocatechin-3-gallate (EGCG), a major constituent of green tea polyphenols, is a potent free radical scavenger and reduces the neuronal damage caused by oxygen free radicals. And it has been known that EGCG could reduce the infarction volume in focal brain ischemia and inhibit MMP-9 activity. To delineate the relationship between the anti-ischemic action and the MMP-9-inhibiting action of EGCG, we investigated the effect of EGCG on brain infarction and the activity of matrix metalloproteinase-9 induced by permanent middle cerebral artery occlusion (pMCAO) in ICR mice. EGCG (40 mg/kg, i.p. $15{\sim}30min$ prior to MCAO) significantly decreased infarction volume at 24 hr after MCAO. GM 6001 (50 mg/kg, i.p. $15{\sim}30min$ prior to MCAO), a MMP inhibitor, also significantly reduced infarction volume. In zymogram, MMP-9 activities began to increase at ipsilateral cortex at 2 hr after MCAO, and the increments of MMP-9 activities were attenuated by EGCG treatment. Western blot for MMP-9 also showed patterns similar to that of zymogram. These findings demonstrate that the anti-ischemic action of EGCG ire mouse focal cerebral ischemia involves its inhibitory effect on MMP-9.

A verification on the physical effectiveness of therapeutic horseback riding exercise: Focused on the EMG analysis

  • Kim, You-Sin;Yang, Jae-Young;Lee, Namju
    • Journal of the Korean Applied Science and Technology
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    • v.35 no.2
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    • pp.317-324
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    • 2018
  • Various studies related to therapeutic horseback riding have been reported to be positive for the therapeutic effect of patients with cerebral palsy; however, most of the previous studies focused on to muscle development with training period related to the physical effects of therapeutic horseback riding. To identify the causes and phenomena of muscular activation of the body through actual therapeutic horseback riding exercise and to promote the excellence of physical effects of therapeutic horseback riding. This study was a nonrandomized prospective positive-controlled trial design. Twelve teenaged males with cerebral palsy were selected who had experienced riding exercise for 8-12 months. This study measured 8 muscle activities of the pectoralis major muscle (PM), biceps brachii (BB), rectus abdominis muscle (RA), latissimus dorsi muscle (LD), spinal erector muscle (SE), rectus femoris muscle (RF), anterior tibial muscle (AT), and external gastrocnemius muscle (EG) by using electromyography (EMG). Muscle activity was significantly higher in horse riding position than sitting on the common chair in all muscles (PM, BB, RA, LD, SE, RF, AT, and EG). The activity of the body muscles according to the difference of horse walking method (walk: WA; sitting trot: ST; and riding trot: RT) of therapeutic horse riding showed the highest muscle activity in the PM muscle at ST, and the highest activity at BB, RA, LD, SE, and AT muscles at ST and RT, and showed the highest muscle activity in RF and EG muscle at RT. The results of this study suggest that intervention for the treatment of cerebral palsy patients can use therapeutic riding exercise as a rehabilitation method.

The Study of Sagunja-tang, Ijin-tang, Yukgunja-tang on the Change of Cerebral Hemodynamics in Rats (사군자탕, 이진탕, 육군자탕이 뇌혈류역학변동에 미치는 실험적 연구)

  • Jeong Hyun Woo;Kim Hee Seong
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.18 no.1
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    • pp.75-83
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    • 2004
  • This experimental study was designed to investigate the effects of Sagunja-tang(SGJT), Ijin-tang(IJT), Yukgunja-tang(YGJT) on the change of cerebral hemodynamics [regional cerebral blood f1ow(rCBF), mean arterial blood pressure(MABP), and pial arterial diameter (PAD)] in normal rats, and further to determine the mechanism of action of YGJT. And, this Study was designed to investigate whether YGJT inhibit lactate dehydrogenase(LDH) activity in neuronal cells. The results were as follows ; 1. SGJT significantly increased rCBF but MABP was not changed comparing with normal MABP(l00 %). This results were suggested that SGJT significantly increased rCBF by dilating PAD. 2. IJT significantly decreased rCBF in a dose-dependent, but significantly increased MABP in a dose-dependent. This results were suggested that IJT significantly decreased rCBF by contracting PAD. 3. YGJT significantly increased rCBF and PAD in a dose-dependent, and YGJT increased MABP compared with normal MABP(100 %). This results were suggested that YGJT significantly increased rCBF by dilating PAD. 4. The YGJT-induced increase in rCBF was significantly accelerated by pretreatment with indomethacin (IDN, 1 mg/kg, i.p.), an inhibitor of cyclooxygenase but was significantly inhibited by methylene blue (MTB, 10 ㎍/㎏ i.p.), an inhibitor of guanylate cyclase. 5. The YGJT-induced increase in PAD and MABP were accelerated by pretreatment with IDN but was significantly inhibited by MTB. This results suggested that the mechanism of YGJT is mediated by guanylate cyclase. 6. YGJT inhibited significantly LDH activity in neuronal cells. This results were suggested that YGJT prevented the neuronal death. I thought that YGJT should have improvement of cerebral hemodynamics and inhibitive effect on the brain damage.

Biological Activities of Low Molecular Weight Substances Fractionated from the Seasoned and Smoked Products of Skipjack Tuna (Euthynus pelamis) (가다랑어 훈연조미제품 유래 저분자물질의 생리활성)

  • LEE Jung Min;CHOI Geun Pyo;WON Moo Ho;KIM Sang Moo
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.38 no.4
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    • pp.219-225
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    • 2005
  • We studied the anticancer, antioxidative, ACE inhibitory, antithrombic, and cerebral ischemia inhibitory activities, of low molecular weight substances fractionated from the seasoned and smoked products of skipjack tuna (Euthynus pelamis). Low molecular weight substances fractionated from the liquid extract of seasoned and smoked skipjack tuna powder showed 7 peaks on gel permeation chromatography. Anticancer activity was the highest at Peak 3 $(54.23%)$ followed by Peak 4 $(41.58\%)$. The potency order of antioxidative activity was the highest at Peak 3 $(94.14\%)$ followed by Peak 2 $(82.07\%)$ and Peak 5 $(81.24\%)$. ACE inhibitory activity was the highest at Peak 3 $(67.27\%)$ followed by Peak 5 $(45.62\%)$. But there was weak anti thrombotic effect (PT and APTT) in the low molecular weight substances of the seasoned and smoked products of skipjack tuna. Cerebral ischemia inhibitory activity was the highest at Peak 3 $(80.0\%)$ followed by Peak 5 $(40.0\%)$.

Cytotoxicity of Hydrogen Peroxide and Effects of Rhizoma Gastrodiae Against Hydrogen Peroxide in Mouse Cerebral Neurons (생쥐의 배양 대뇌신경세포에 대한 Hydrogen Peroxide의 세포독성 및 천마의 영향)

  • Choi Yu Sun;Lee Eun Mi;Son Young Woo;Lee Kang Chang;Shin Yong Il;Song Myung Su;Choi Young Ja;Choi Kyu Chul;Kang Hyung Won;Lim Chang Yong;Rhu Ti Yong;Park Sea Hong;Park Seung Taeck
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.16 no.5
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    • pp.928-931
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    • 2002
  • To elucidate the toxic effect of oxygen free radicals on cultured mouse cerebral neurons damaged by hydrogen peroxide(H₂O₂)-induced neurotoxicity, we examined the neurotoxicity induced by oxygen radicals by NR assay when cultured cerebral neurons were grown in the media containing various concentrations of H202 for 6 hours. In addition, neuroprotective effects of herb extracts such Rhizoma Gastrodiae(RG) on H202-induced neurotoxicity in cultured cerebral neurons were evaluated after cultured cerebral neurons were preincubated with various concentrations of herb extract, RG for 2 hours before 50uM H₂O₂ for 6 hours. H₂O₂ decreased remarkably cell viability in dose-and time-dependent manner in these cultures, and also herb exract, RG decreased LDH activity of cerebral neurons damaged by H₂O₂. From the above results, it is suggested that H₂O₂ was toxic in cultured cerebral neurons from mouse, and RG was effective in blocking the neurotoxicity induced by oxygen radicals in these cultures.

The effect of motor learning in children with cerebral palsy: A systemic review (뇌성마비 아동의 운동학습 효과 체계적 고찰)

  • Kim, Jung-Hyun
    • Journal of Korean Physical Therapy Science
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    • v.28 no.1
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    • pp.33-45
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    • 2021
  • Background: Children with cerebral palsy have difficulty acquiring motor skills through motor learning due to lack of motor planning of the central nervous system and musculoskeletal dysfunction. Motor learning is the acquisition or modification of movements with the aim of developing skilled movements and behaviors. Cerebral palsy improve motor function through motor learning, and effective motor learning mainly depends on practice parameters such as learning feedback. Therefore, we investigate the effect of motor learning in children with cerebral palsy and try to present the possibility of clinical application. Design: A systemic review. Methods: Research papers were published from Jan, 2010 to Dec, 2020 and were searched using PubMed and Medline. The search terms are 'task specific training' OR 'motor learning' OR 'feedback(Mesh term)' OR 'goal activity' AND 'cerebral palsy(Mesh term)'. A total of eight papers were analyzed in this study. The paper presented the quality level based on the research evidence, and also presented PEDro (Physiotherapy Evidence Database) scores to evaluate the quality of design studies in randomized clinical trials. Results: The results showed that motor learning coaching in children with cerebral palsy improved motor function in post and follow up tests. Also, self-control feedback of motor learning is more effective than external control feedback. 100% external control feedback of motor learning is effective in the acquisition phase and 50% external feedback of motor learning is effective in the retain phase. Conclusion: These results suggest that it will be an important data for establishing evidence on the effect of motor learning arbitration methods in children with cerebral palsy to develop clinical applicability and protocols.

Differential Activation of Ras/Raf/MAPK Pathway between Heart and Cerebral Artery in Isoproterenol-induced Cardiac Hypertrophy

  • Kim, Hyun-Ju;Kim, Na-Ri;Joo, Hyun;Youm, Jae-Boum;Park, Won-Sun;Warda, Mohamed;Kang, Sung-Hyun;Thu, Vu-Thi;Khoa, Tran-Minh;Han, Jin
    • The Korean Journal of Physiology and Pharmacology
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    • v.9 no.5
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    • pp.299-304
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    • 2005
  • Cardiac hypertrophy contributes an increased risk to major cerebrovascular events. However, the molecular mechanisms underlying cerebrovascular dysfunction during cardiac hypertrophy have not yet been characterized. In the present study, we examined the molecular mechanism of isoproterenol (ISO)-evoked activation of Ras/Raf/MAPK pathways as well as PKA activity in cerebral artery of rabbits, and we also studied whether the activations of these signaling pathways were altered in cerebral artery, during ISO-induced cardiac hypertrophy compared to heart itself. The results show that the mRNA level of c-fos (not c-jun and c-myc) in heart and these genes in cerebral artery were considerably increased during cardiac hypertrophy. These results that the PKA activity and activations of Ras/Raf/ERK cascade as well as c-fos expression in rabbit heart during cardiac hypertrophy were consistent with previous reports. Interestingly, however, we also showed a novel finding that the decreased PKA activity might have differential effects on Ras and Raf expression in cerebral artery during cardiac hypertrophy. In conclusion, there are differences in molecular mechanisms between heart and cerebral artery during cardiac hypertrophy when stimulated with β2 adrenoreceptor (AR), suggesting a possible mechanism underlying cerebrovascular dysfunction during cardiac hypertrophy.

The Experimental Study of Sunkihwalhyul-Tang against Inhibitive Effects on the Brain Ischemia (순기활혈탕(順氣活血湯)의 뇌허혈(腦虛血) 억제효과(抑制效果)에 관한 실험적(實驗的) 연구(硏究))

  • Hong, Seok;Ann, Jeong-Jo;Jeong, Sang-Yoon;Choi, Chang-Won;Jeong, Young-Deuk
    • Herbal Formula Science
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    • v.13 no.1
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    • pp.49-69
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    • 2005
  • This Study was designed to investigate the effect of Sunkihwalhyul -Tang extract(SHT) on the change of cerebral hemodynamics [regional cerebral blood flow(rCBF), pial arterial diameter(PAD) and mean arterial blood pressure(MABP)] in normal and cerebral ischemic rats, and further to determine the mechanisms of action of SHT on hemodynamics. In addition, this study was designed to investigate whether SHT inhibits lactate dehydrog enase(LDH) activity in neuronal cells and cytokines production in serum of cerebral ischemic rats. The results were as follows 1. SHT significantly increased rCBF and PAD in a dose-dependent manner, but MABP was not changed by injecting SHT. These results suggest that SHT significantly increases rCBF by dilating PAD. 2. The SHT-induced increase in rCBF was significantly inhibited by pretreatment with indomethacin(IDN, 1 mg/kg, i.p.), an inhibitor of cyclooxygenase and methylene blue(MTB, $10{\mu}g/kg$, i.p.), an inhibitor of guanylate cyclase. 3. The SHT-induced dilation in PAD was significantly inhibited by pretreatment with IDN and MTB. 4. The SHT-induced some increase in MABP was significantly increased by pretreatment with IDN. These results suggest that the mechanism of action of SBT is mediated by guanylate cyclase. 5. Both rCBF and PAD were significantly and stably increased by SHT(10 mg/kg, i.p.) during the period of cerebral reperfusion, which contrasted with the findings of rapid and marked increase in control group. 6. SBH significantly inhibited LDH activity in neuronal cells. These results suggest that SHT prevents the neuronal death. 7. In cytokine production in the senlm drawn from femoral artery 1 hr after middlecerebral arterial occlusion, sample group showed significantly decreased production of IL-1$\beta$ production, decreased production TNF-$\alpha$ and increased Production of IL-10 compared with control group. 8. In cytokine production in the serum drawn femoral artery 1 hr after reperfusion, sample group showed significantly decreased production of IL-1$\beta$ and TNF-$\alpha$ as wellas significantly increased production of IL10 compared with control group. These results suggest that SHT mediated by guanylate cyclase has inhibitive effect on the brain damage by inhibiting LDH activity, IL-1$\beta$ and TNF-$\alpha$ production, and by accelerating IL-10 production. The present author thinks that SHT has an anti-ischemic effects through the improvement of cerebral hemodynamics and inhibitive enects on the brain damage.

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