• Title/Summary/Keyword: capillary approach

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Microscopic Decompression of Digital Nerve Surrounded by Hemangioma: A Case Report (미세수술을 통하여 수지신경을 압박하는 혈관종을 성공적으로 제거한 증례 보고)

  • Ko, Jun Gul;Kim, Jun Hyeok;Rha, Eun Young;Lee, Jun Yong;Yoo, Gyeol;Baek, Sang Oon
    • Archives of Hand and Microsurgery
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    • v.23 no.4
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    • pp.301-305
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    • 2018
  • Hemangiomas are benign neoplasms of endothelial cells origin, rarely found in hand region. Authors report a 62-year-old female with capillary hemangioma of right index finger causing a neuropathic symptom via nerve compression. A space-occupying vascular lesion surrounding the radial digital nerve was revealed in magnetic resonance imaging (MRI), which was removed under microscopic assist. The digital nerve was decompressed consequently. The mass was firmly attached to both the digital nerve and digital artery, requiring a meticulous microscopic dissection to preserve the nerve and artery. Compression neuropathy caused by space-occupying lesions is rare and its diagnosis is often difficult. A microscopic surgical approach can be used to successfully relieve neuropathic pain after proper diagnosis established by diagnostic tools such as MRI as in this case.

Effect of PLA2 Inhibitor Rutin on Endotoxin-Induced Acute Lung Injury (내독소로 유도된 급성폐손상에서 PLA2의 억제제인 Rutin의 효과)

  • Kim, Seong-Eun;Lee, Young-Man;Park, Won-Hark
    • Applied Microscopy
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    • v.34 no.1
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    • pp.31-42
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    • 2004
  • Acute respiratory distress syndrome (ARDS) is a kind of acute lung injury characterized by inflammatory disruption of alveolar-capillary barrier and notorious for its high mortality. Neutrophils cause cell damage through the production of free radicals, inflammatory mediators, and proteases in ARDS. $PLA_2$ might serve a primary regulatory role in the activation of neutrophils. This present study was performed to elucidate the effect of rutin known as $PLA_2$ inhibitor on ARDS induced by endotoxin. Endotoxin had increased lung myeloperoxidase (MPO) activity, BAL (bronchoalveolar lavage) protein content, numbers of neutrophils in BALF (bronchoalveolar lavage fluid) compared with those of control rat (p<0.001). In addition, histological evidence of lung injury was correlated with neutrophil influx into alveolar space and cerrous perhydroxide granules were found in lining of endothelial cell, alveolar type I, II cells. In contrast, pretreated group of rutin had significantly decreased all of the parameters (p<0.001). These data suggest that inhibition of $PLA_2$ is one step approach that block the process of ARDS. Accordingly, we conclude that rutin can be used as the prophylactic agent for ARDS on the bases of these experimental results.

Stress Day Index to Predict Soybean Yield Response by Subsurface Drainage in Poorly Drained Sloping Paddy Fields (배수불량 경사지 논에서 배수개선에 따른 콩의 수분스트레스 반응해석)

  • Jung, Ki-Yuol;Yun, Eul-Soo;Park, Chang-Young;Hwang, Jae-Bok;Choi, Young-Dae;Park, Ki-Do
    • Korean Journal of Soil Science and Fertilizer
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    • v.44 no.5
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    • pp.702-708
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    • 2011
  • There are considerable areas of wet paddy fields in Korea that requires improvement of its drainage system. In poorly drained sloping paddy fields, upland crops can be damaged by either rainfall or capillary rise of the water table caused by percolating water beneath the upper fields during summertime rainy season. The purpose of this study is to evaluate excess water stress of soybean yield by drainage systems. Four drainage methods namely open ditch, vinyl barrier, pipe drainage and tube bundle were installed within 1-m position at the lower edge of the upper paddy fields. Stress Day Index (SDI) approach was developed to quantify the the cumulative effect of stress imposed on a soybean yield throughout the growing season. SDI was determined from a stress day factor (SD) and a crop susceptibility factor (CS). The stress day factor is a measure degree and duration of stress of the ($SEW_{30}$). The crop susceptibility factor (CS) depends of a given excess water on crop stage. The results showed that SDI used to represent the moisture stress index was most low on the pipe drainage 64.75 compared with the open ditch 355.4, vinyl barrier 271.55 and tube bundle 171.55. Soybean grain yield increased continuously with the rate of 3% in Vinyl Barrier, 32% in Pipe Drainage and 16% in Tube Bundle.