• 제목/요약/키워드: neuroscience

검색결과 897건 처리시간 0.041초

신경외과 영역에서의 미세혈관 문합술 (Microvascular Anastomosis in Neurosurgical Field)

  • 나형균;이경진;조경근;박성찬;박해관;조정기;지철;최창락
    • Archives of Reconstructive Microsurgery
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    • 제8권2호
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    • pp.170-175
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    • 1999
  • Objective : Extracranial-intracranial(EC-IC) microvascular anastomosis was performed in 18 patients with hemodynamic cerebral ischemia and traumatic cerebral aneurysm, the aim of this retrospective study was to assess its value in neurosurgical field. Method : Of 18 cases, 17 case were hemodynamic cerebral ischemia and one was traumatic cerebral aneurysm. There were 14 superficial temporal artery(STA)-to-middle cerebral artery(MCA) anastomosis, 3 saphenous vein graft bypass(2 external carotid artery(ECA)-to-MCA, 1main trunk of the STA-to-MCA) and 1 radial artery bypass(ECA-to-MCA). Results : Bypass patency was confirmed by postoperative angiography in all cases except for two cases, postoperative cerebral blood flow of ischemic brain showed significant increased in all cases with good patency through bypass. Conclusion : Revascularization by EC-IC microvascular anastomosis to the ischemic brain eliminated ischemia and was associated with excellent good outcome and good patency rates.

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Etoposide Induces Mitochondrial Dysfunction and Cellular Senescence in Primary Cultured Rat Astrocytes

  • Bang, Minji;Kim, Do Gyeong;Gonzales, Edson Luck;Kwon, Kyoung Ja;Shin, Chan Young
    • Biomolecules & Therapeutics
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    • 제27권6호
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    • pp.530-539
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    • 2019
  • Brain aging is an inevitable process characterized by structural and functional changes and is a major risk factor for neurodegenerative diseases. Most brain aging studies are focused on neurons and less on astrocytes which are the most abundant cells in the brain known to be in charge of various functions including the maintenance of brain physical formation, ion homeostasis, and secretion of various extracellular matrix proteins. Altered mitochondrial dynamics, defective mitophagy or mitochondrial damages are causative factors of mitochondrial dysfunction, which is linked to age-related disorders. Etoposide is an anti-cancer reagent which can induce DNA stress and cellular senescence of cancer cell lines. In this study, we investigated whether etoposide induces senescence and functional alterations in cultured rat astrocytes. Senescence-associated ${\beta}$-galactosidase (SA-${\beta}$-gal) activity was used as a cellular senescence marker. The results indicated that etoposide-treated astrocytes showed cellular senescence phenotypes including increased SA-${\beta}$-gal-positive cells number, increased nuclear size and increased senescence-associated secretory phenotypes (SASP) such as IL-6. We also observed a decreased expression of cell cycle markers, including PhosphoHistone H3/Histone H3 and CDK2, and dysregulation of cellular functions based on wound-healing, neuronal protection, and phagocytosis assays. Finally, mitochondrial dysfunction was noted through the determination of mitochondrial membrane potential using tetramethylrhodamine methyl ester (TMRM) and the measurement of mitochondrial oxygen consumption rate (OCR). These data suggest that etoposide can induce cellular senescence and mitochondrial dysfunction in astrocytes which may have implications in brain aging and neurodegenerative conditions.

종합병원 뇌신경센터 건축계획에 관한 연구 - 주요단위공간을 중심으로 (A Study on the Planning of the Neuroscience Center in General Hospital)

  • 윤우용;채철균
    • 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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    • 제20권3호
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    • pp.27-40
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    • 2014
  • Purpose: As the nation is becoming an aging society, there is an increasing number of the patient who has Neuroscience disease. So it is necessary to build a facility which provides specialized health care. Methods: Field surveys to facilities and analysis to the floor plan have been conducted in order to suggest adequate architectural composition to the specialized neuroscience center and the dimensions of rooms. Results: The result of this study can be summarized into six points which contain guide to how to organize the specialized neuroscience center. One of the most important things in this study is to suggest the architectural type which provides efficient collaborating system between the outpatient and angiography unit. Implications: It can be said that this paper can be useful research material when the architect tries to plan the specialized neuroscience center.

Protective effect of metabolized Yangguksanwha - tang on Hypoxia/Reperfusion induced-PC12 cell damage

  • Lee, Eun-Soo;Kim, Kun-Tae;Park, Ji-Ho;Kang, Chul-Hun;Sohn, Nak-Won;Soh, Yun-Jo
    • 대한약학회:학술대회논문집
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    • 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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    • pp.257.2-257.2
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    • 2002
  • This research was performed to investigate the protective effect of Yangguksanwha-tang(YST) agaist ischemic damage in PC 12 cells. To elucidate the mechanism of the protective effect of YST on ischemic insult. cell viability and changes in activities of Superoxide dismutase. Glutathione Peroxidase. Catalase. capase 3 and the production of Malondialdehyde were observed after treating PC12 cells with YSt which was metabolized by rat liver homogenate. (omitted)

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LEARNING AND MEMORY IN THE PREFRONTAL CORTEX

  • Jung, Min-W.;Baeg, Eun-H.;Kim, Yun-B.
    • 대한약리학회:학술대회논문집
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    • 대한약리학회 2006년도 The 6th Congress of the Federation of Asian and Oceanian Physiological Societies
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    • pp.106.2-106.2
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    • 2006
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