• Title/Summary/Keyword: Cortex-A8

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The effects of Magnoliae cortex and Zea Mays L. extract mixtures on experimentally induced periodontitis of beagle dog (후박추출물과 옥수수 불검화 추출물 혼합 경구용 제제가 비글견에서 실험적으로 유발된 치주염에 미치는 영향)

  • Kim, Tae-Il;Chung, Chong-Pyoung;Ku, Young
    • Journal of Periodontal and Implant Science
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    • v.32 no.4
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    • pp.847-855
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    • 2002
  • It has been reported that Magnoliae cortex extract has antibacterial and antimicrobial activity against pathogenic microbes and Zea Mays L. extract is effective for improving gingival tissue health. The purpose of this study was to examine the anti-inflammatory and antimicrobial effects of Zea Mays L. and Magnoliac cortex extract mixtures through experimental peridontitis induced beagle dog model. Nine beagle dogs with experimentally induced periodontitis were selected. Baseline clinical indices which includes plaque index, gingival index, probing pocket depth, clinical attachment level, gingival fluid flow rate were recorded and microbial assays were done. Magnoliac cortex and Zea Mays L., mixed at 2:l ratio in 105mg capsular dosage, were taken by 3 capsule (Group I) or 6 capsule dosages (Group II) three times a day. After 4,8,12 weeks, clinical indices were recorded. All data of clinical indices were compared through one-way ANOVA with 95% confidence level. Clinical indices of group I and II showed significantly better results than those of control group. There were no significant differences between group I and II. In conclusion, it was confirmed that mixture of Magnoliae cortex and Zea May L. (mix ratio 2:1) possessed clinical improving effects to periodontitis.

A Literature Study of Pericarpium Granati and Cortex Betulae Platyphyllae (석류피(石榴皮)와 화피(樺皮)에 관한 문헌고찰)

  • Park, Soo-Yeon;Na, Chang-Su;Jeong, Won-Cheol;Lee, Jong-Cheol
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.25 no.3
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    • pp.13-33
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    • 2012
  • Objective : The aim of this study is to find the therapeutic meaning of Pericarpium Granati and Cortex Betulae Platyphyllae in herbal medication. Methods : About the origin, the component, the processing the drug, the properties and tastes of drugs, the meridian tropism, the effects, the treating disease, the contraindication and the method of adminictration, I have researched 23 literatures and 10 disquisitions to mention the Pericarpium Granati and Cortex Betulae Platyphyllae. Result : 1. Pericarpium Granati is pericarp of mature fruit of The Pomegranate belongs to Punicaceae and Cortex Betulae Platyphyllae is bark of Betula platyphylla var. japonica (Miquel) Hara belongs to Betulaceae. 2. Pericarpium Granati consists of tannin 10.4~21.3%, lead 0.8%, resin 4.5%, mannitol 1.8%, sugar 2.7%, gum 3.2%, inulin 1.0%, musilage 0.6%, gallic acid 4.0%. Cortex Betulae Platyphyllae consists of betulin about 35%, various higher fatty acid about 35%, tannin about 7%. 3. The properties and taste of Pericarpium Granati is acid, astringency, warm, nontoxic and the meridian tropism is mainly stomach and large intestine meridian. The properties and taste of Cortex Betulae Platyphyllae is bitter, cold, nontoxic and the meridian tropism is mainly stomach meridian. 4. Pericarpium Granati has come into general use to treat roundworm, tapeworm, old diarrhea, anal prolapse, melena, metrorrhagia, leukorrhea, stomachache from worms, scabies etc. because it is effective on insecticiding, stopping diarrhea, controling hemorrhage and leukorrhea. Cortex Betulae Platyphyllae has come into general use to treat shigellosis, diarrhea, jaundice, cough, sputum, tonsillitis, pneumonia, nephritis, furuncle, prurigo, acne etc. because it is effective on cooling down heat, circulating humidity, removing phlegm, stopping cough, neutralizing poison. 5. Pericarpium Granati and Cortex Betulae Platyphyllae is useful method to external care. To use the herba, pulverize amount of property and then apply to the affected part. Conclusion : This study showed that Pericarpium Granati and Cortex Betulae Platyphyllae is useful herb to treat of skin disease and useful method to external care.

The Effect on Activity of Cerebral Cortex by Key-point Control of The Adult Hemiplegia with fMRI (fMRI를 이용한 성인 편마비의 항조절점 운동이 대뇌피질의 활성화에 미치는 효과)

  • Lee Won-Kil
    • The Journal of Korean Physical Therapy
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    • v.15 no.3
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    • pp.295-345
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    • 2003
  • This study investigated activation of cerebral cortex in patients with hemiplegia that was caused by neural damage. Key-point control movement therapy of Bobath was performed for 9 weeks in 3 subjects with hemiplegia and fMRI was used to compare and analyze activated degree of cerebral cortex in these subjects. fMRI was conducted using the blood oxygen level-dependent(BOLD) technique at 3.0T MR scanner with a standard head coil. The motor activation task consisted of finger flexion-extension exercise in six cycles(one half-cycles = 8 scans = $3\;sec{\times}\;8\;=\;24\;sec$). Subjects performed this task according to visual stimulus that sign of right hand or left hand twinkled(500ms on, 500ms off). After mapping activation of cerebral motor cortex on hand motor function, below results were obtained. 1. Activation decreased in primary motor area, whereas it increased in supplementary motor area and visual association area(p<.001). 2. Activation was observed in bilateral medial frontal gyrus, middle frontal gyrus of left cerebrum, inferior frontal gyrus, inter-hemispheric, fusiform gyrus of right cerebrum, superior parietal lobule of parietal lobe and precuneus in subjedt 1, parahippocampal gyrus of limbic lobe and cingulate gyrus in subject 2, and inferior frontal gyrus of right frontal lobe, middle frontal gyrus, and inferior parietal lobule of left cerebrum in subject 3 (p<.001). 3. Activation cluster extended in declive of right cellebellum posterior lobe in subject 1, culmen of anterior lobe and declive of posterior lobe in subject 2, and dentate gyrus of anterior lobe, culmen and tuber of posterior lobe in subject 3 (p<.001). In conclusion, these data showed that Key-point control movement therapy of Bobath after stroke affect cerebral cortex activation by increasing efficiency of cortical networks. Therefore mapping of brain neural network activation is useful for plasticity and reorganization of cerebral cortex and cortico-spinal tract of motor recovery mechanisms after stroke.

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Developmental Anomalies of Central Nervous System in Human

  • Chi, Je G.
    • Toxicological Research
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    • v.17
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    • pp.11-16
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    • 2001
  • The development of the central nervous system is a continuous process during the embryonic and fetal periods. For a better understanding of congenital anomalies of central nervous system, three major events of normal development, i.e., neurulation (3 to 4 weeks), brain vesicle formation (4 to 7 weeks) and mantle formation (over 8 weeks) should be kept in mind. The first category of anomalies is neural tube defect. Neural tube defects encompass all the anomalies arise in completion of neurulation. The second category of central nervous system anomalies is disorders of brain vesicle formation. This is anomaly that applies for "the face predicts the brain". Holoprosencephaly covers a spectrum of anomalies of intracranial and midfacial development which result from incomplete development and septation of midline structures within the forebrain or prosencephalon. The last category of central nervous system malformation is disorders involving the process of mantle formation. In the human, neurons are generated in two bursts, the first from 8 to 10 weeks and next from 12 to 14 weeks. By 16 weeks, most of the neurons have been generated and have started their migration into the cortex. Mechanism of migration disorders are multifactorial. Abnormal migration into the cortex, abnormal neurons, faulty neural growth within the cortex, unstable pial-glial border, degeneration of neurons, neural death by exogenous factors are some of the proposed mechanism. Agyria-pachygyria are characterized by a four-layerd cortex. Polymicrogyria is gyri that are too numerous and too small, and is morphologically heterogeneous. Cortical dysplasia is characterized by the presence Q[ abnormal neurons and glia arranged abnormally in focal areas of the cerebral cortex. Neuroglial malformative lesions associated with medically intractable epilepsy are hamartia or hamartoma, focal cortical dysplasia and microdysgenesis.ysgenesis.

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Neural circuit remodeling and structural plasticity in the cortex during chronic pain

  • Kim, Woojin;Kim, Sun Kwang
    • The Korean Journal of Physiology and Pharmacology
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    • v.20 no.1
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    • pp.1-8
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    • 2016
  • Damage in the periphery or spinal cord induces maladaptive plastic changes along the somatosensory nervous system from the periphery to the cortex, often leading to chronic pain. Although the role of neural circuit remodeling and structural synaptic plasticity in the 'pain matrix' cortices in chronic pain has been thought as a secondary epiphenomenon to altered nociceptive signaling in the spinal cord, progress in whole brain imaging studies on human patients and animal models has suggested a possibility that plastic changes in cortical neural circuits may actively contribute to chronic pain symptoms. Furthermore, recent development in two-photon microscopy and fluorescence labeling techniques have enabled us to longitudinally trace the structural and functional changes in local circuits, single neurons and even individual synapses in the brain of living animals. These technical advances has started to reveal that cortical structural remodeling following tissue or nerve damage could rapidly occur within days, which are temporally correlated with functional plasticity of cortical circuits as well as the development and maintenance of chronic pain behavior, thereby modifying the previous concept that it takes much longer periods (e.g. months or years). In this review, we discuss the relation of neural circuit plasticity in the 'pain matrix' cortices, such as the anterior cingulate cortex, prefrontal cortex and primary somatosensory cortex, with chronic pain. We also introduce how to apply long-term in vivo two-photon imaging approaches for the study of pathophysiological mechanisms of chronic pain.

The Developement of Smart TV and Smart Home Platform based on HTML5 (HTML5를 기반으로 한 스마트 TV와 스마트 홈용 플랫폼 개발)

  • Kim, Gwang-Jun;Kang, Ki-Woong;Han, Kyu-Cheol;Jang, Seung-Jin;Yoon, Chan-Ho
    • The Journal of the Korea institute of electronic communication sciences
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    • v.9 no.9
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    • pp.991-998
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    • 2014
  • Embedded System operates hardware installed like processor, memory device, various input/output devices and software to control them. This thesis presents MPU module and Base board which are efficient industrial control through design and manufacture as developing S5PV210 CPU of SAMSUNG used by ARM Cortex-A8 based on Android which is Open mobile platform is installed to embedded system. Data for temperature and humidity which are received by CAN communication module proved the suitability and validity for the embedded platform design as implementing application program employed the native App with Linux Kernel based on the Android OS and application of HTML5.

Real Time Framework Design based on Android Platform (안드로이드 플랫폼을 기반으로 한 실시간 프레임워크 설계)

  • Kang, Ki-Woong;Han, Kyu-Cheol;Jang, Seung-Jin;Lim, Se-Jung;Kim, Kwang-Jun;Jang, Chang-Soo
    • The Journal of the Korea institute of electronic communication sciences
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    • v.9 no.11
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    • pp.1255-1266
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    • 2014
  • This thesis presents MPU module, Base board and sensor module which are efficient industrial control through design and manufacture as developing S5PV210 CPU of SAMSUNG used by ARM Cortex-A8 based on Android which is Open mobile platform is installed to embedded system. Data for temperature and humidity which are received by sensor module proved the suitability and validity for the real time framework design as implementing application program employed the smart phone App with hybrid application based on DB of web server.

The Effect of Coptidis Rhizoma, Feaxini Cortex, Jinpisan(秦皮散) on Experimental Pseudomonas aeruginosa Keratitis. (黃連, 秦皮, 秦皮散이 綠膿菌性 角膜炎에 미치는 效果에 관한 實驗的 硏究)

  • Choi, Gyu-dong;Chae, Byung-yoon
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.12 no.1
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    • pp.18-35
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    • 1999
  • Coptidis Rhizoma, Fraxini Cortex, Jinpisan(秦皮散) have been as eye washes of inflammatory eye disease in the oriental medicine. Especially Jinpisan(秦皮散) has been used for the disease which is similar to Peudomonas aeruginisa keratitis. This research was attempted to investigate the effect of Coptidis Rhizoma, Fraxini Cortex, Jinpisan(秦皮散), on Peudoronas aeruginisa keratitis. Pseudomonas aeruginosa keratitis causes a deep rapid intense ulceration which often leads to perforation of the cornea within 48 hours. In this research, we induced keratits in the rabbits by inoculating Pesudomonas aeruginosa(9027) and observed the effect on the keratitis and the irritation against the external eye. Also we mesured the minimum inhibitory consentration(MIC) of Coptidis Rhizoma, Fraxini Cortex, Jinpisan(秦皮散) by agar diliution method and the anti-bacterial activites by disk method. The tested bacteria were as follows : a) Pseudomonas aeruginosa (9027), b) Streptococcus pneumoniae(6303), c) Staphylococcus epidermidis(12228), d) Staphylococcus aureus(6538P). The results were as follows ; 1. The groups which were applied eye washes of Fraxini Cortex, Jinpisan reavealed a significant effect, but the group applied eye wash of Coptidis Rhizoma reveaded no effect on Pseudomonas aeruginosa keratitis. 2. Applying eye washes of Coptidis Rhizoma, Fraxini Cortex, Jinisan revealed an irritation against external eyes. 3. Coptidis Rhizoma showed an anti-bacterial activity on Pseudomonas aeruginosa, Streptococcus pneumoniae, Staphylococcus epidermidis, Staphylucoccus aureus by agar diliution method 4. Coptidis Rhizoma showed an anti-bacterial activity on Pseudomonas aeruginosa, Streptococcus pneumoniae, Staphylococcus epidermidis, Staphylococcus aureus by disk method. 5. Fraxini Cortex showed an anti-bacterial activity on Pseudomonas aeruginosa, Streptococcus pneumoniae, Staphylococcus epidermidis, Staphylococcus aureus by agar diliution method 6. Fraxini Cortex showed an anti-bacterial activity on Pseudomonas aeruginosa, Sireptococcus pneumoniae, Staphylococcus epidermidis, Staphy1ococcus aureus by disk method. 7. Jinpisan showed an anti-bacterial activity on Pseudomonas aeruginosa, Streptococcus pneumoniae, Staphylococcus epidermidis, Staphylococcus aureus by agar diliution method. 8. Jinpisan showed an anti-bacterial activity on Pseudomonas aeruginosa, Streptococcus pneumoniae, Staphylococcus epidermidis, Staphylococcus aureus by disk method. According to the above results, Fraxini Cortex, Jinpisan(秦皮散) are recognized to have an effective treatment on the Pesudomonas aeruginosa keratitis, so this experiment is thought to be a basic ingredient in proving the effect of Fraxini Cortex, Jinpisan which is applied many in documents and clinical medicine. In the comparison of anti-bacterial activity and results of treatment on the Pesudomonas aeruginosa keratitis, Jinpisan(秦皮散) was more effective than Coptidis Rhizoma, Fraxini Cortex.

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In vitro and in vivo anti-inflammatory and anti-allergic responses caused by water extract of Mori Cortex (상백피(桑白皮)가 항알러지 및 항염증반응에 미치는 영향)

  • Lee, Jin-Yong;Kim, Deog-Gon;Cho, Hyung-Jun
    • The Journal of Pediatrics of Korean Medicine
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    • v.19 no.2
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    • pp.175-195
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    • 2005
  • Objective: This experimental study was performed to examine the in vitro and in viva anti-inflammatory and anti-allergic effects of Mori Cortex. Methods: Water extract of Mori Cortex was studied to its ability to stimulate or inhibit macrophage 264.7 cells to produce inflammatory and allergic mediators. Cytokines such as $IL-1{\beta}$, IL-6, IL-10 and $TNF-{\alpha}$ were measured by immunochemical assay. In vitro, the macrophages 264.7 were classified into four groups. One group was a normal group. The other group was a (-) control group stimulated with LPS. And the third group was a (+) control group pretreated for 1 hour with hydrocortisone. And the fourth group was a sample group pretreated for 1 hour with Mori Cortex. After pretreatment, macrophage were incubated with lipopolysaccharide(LPS) $100\;ng/m{\ell}$ for 12 hour and media collected and $IL-1{\beta}$, IL-6, IL-10 and $TNF-{\alpha}$ concentrations in supernatants were measured each by Enzyme linked immuno-soubent assay. Mori Cortex were used $50\;{\mu}g/m{\ell},\;100\;{\mu}g/m{\ell},\;250\;{\mu}g/m{\ell},\;500\;{\mu}g/m{\ell},\;and\;1,000\;{\mu}g/m{\ell}$. Hydrocortisones were used $10^{-8}M,\;10^{-7}M,\;10^{-6}M,\;10^{-5}M\;and\;10^{-4}M$. In vivo, the SD rats were classified into three groups. One group was a normal group injected with normal saline into the abdominal cavity. The other was a control group prescribed to compound 48/80 after normal saline injection. And the third was a sample group prescribed to compound 40/80 after Mori Cortex injection. Then, the release of histamine, IL-6 and $TNF-{\alpha}$ were measured. Results : In vitro, Man Cortex significantly increased the release of $IL-1{\beta}\;and\;TNF-{\alpha}$ by LPS-stimulated macrophage 264.7 cells. And it significantly decreased the release of IL-10. In IL-6, Mori Cortex of low concentration significantly decreased the release of IL-6, but that of high concentration acted in reverse. In vivo, Man Cortex didn't show significant inhibitory effects on the release of histamine and IL-6 in comparison with that of the control group. But it significantly increased the release of $TNF-{\alpha}$ in comparison with that of the control group.

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Effect of Fluoxetine on the Induction of Long-term Potentiation in Rat Frontal Cortex

  • Kim, Hwang-Soo;Kim, Hyun-Sok;Hahn, Sang-June;Kim, Myung-Jun;Yoon, Shin Hee;Jo, Yang-Hyeok;Kim, Myung-Suk;Rhie, Duck-Joo
    • The Korean Journal of Physiology and Pharmacology
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    • v.8 no.6
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    • pp.295-300
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    • 2004
  • Serotonin (5-hydroxytroptamine, 5-HT) has been shown to affect the induction of long-term potentiation (LTP) in the cortex such as the hippocampus, the visual cortex and the prefrontal cortex. Fluoxetine, as a selective serotonin reuptake inhibitor, is used in the management of a wide variety of psychological diseases. To study the effect of fluoxetine on the induction of LTP, we recorded the field potential in layer II/III of the frontal cortex from 3-wk-old. LTP was induced in horizontal input by theta burst stimulation (TBS). TBS with two-folds intensity of the test stimulation induced LTP, which was blocked by application of D-AP5 $(50 {\mu}M)$, an NMDA receptor antagonist. Whereas bath application of 5-HT $(10 {\mu}M)$ inhibited the induction of LTP, treatment with the 5-HT depleting agent, para-chloroamphetamine $(PCA,\;10{\mu}M)$, for 2hr did not affect the induction of LTP. Bath application of fluoxetine (1, 3, and $10 {\mu}M)$ suppressed the induction of LTP in concentration-dependent manner, however, fluoxetine did not inhibit the induction of LTP in 5-HT-depleted slices. These results indicate that fluoxetine may inhibit the induction of LTP by modulating serotonergic mechanism in the rat frontal cortex.