• Title/Summary/Keyword: Adhesions

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Mechanosensitive Modulation of Receptor-Mediated Crossbridge Activation and Cytoskeletal Organization in Airway Smooth Muscle

  • Hai, Chi-Ming
    • Archives of Pharmacal Research
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    • v.23 no.6
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    • pp.535-547
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    • 2000
  • Recent findings indicate that mechanical strain (deformation) exerted by the extracellular matrix modulates activation of airway smooth muscle cells. Furthermore, cytoskeletal organization in airway smooth muscle appears to be dynamic, and subject to modulation by receptor activation and mechanical strain. Mechanosensitive modulation of crossbridge activation and cytoskeletal organization may represent intracellular feedback mechanisms that limit the shortening of airway smooth muscle during bronchoconstriction. Recent findings suggest that receptor-mediated signal transduction is the primary target of mechanosensitive modulation. Mechanical strain appears to regulate the number of functional G-proteins and/or phospholipase C enzymes in the cell membrane possibly by membrane trafficking and/or protein translocation. Dense plaques, membrane structures analogous to focal adhesions, appear to be the primary target of cytoskeletal regulation. Mechanical strain and receptor-binding appear to regulate the assembly and phosphorylation of dense plaque proteins in airway smooth muscle cells. Understanding these mechanisms may reveal new pharmacological targets for control1ing airway resistance in airway diseases.

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Human Milk Oligosaccharides and Prebiotic Oligosaccharides in Infant Formula (모유 올리고당과 분유첨가 Prebiotic 올리고당의 관한 고찰)

  • Chung, Chang-Ho
    • Microbiology and Biotechnology Letters
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    • v.38 no.1
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    • pp.1-6
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    • 2010
  • Human milk is frequently the only food source for a newborn during the initial stage of life after birth. Milk provides not only the nutrients necessary for the infant's growth, but also ingredients that may enable the infant to thrive. Human milk oligosaccharides (HMO) are considered to be these beneficial ingredients for the health of infant. It has been reported that around 5 to 10 g unbound oligosaccharides and around 20 to over 130 different HMO are present in 1L of human milk. The suggested health mechanisms of HMO's roles in host defense are 1) blocking bacterial adhesions, 2) binding to a toxin receptor on the extracellular domain, and 3) postbiotic effect resulting from the increase of probiotics such as Bifidobacteria and Lactobacilli. Among the prebiotic oligosaccharides, mixtures of long chain fuetooligosaccharides (10%) and galactooligosaccharides (90%) in infant formula are demonstrated to increase the number of Bifidobacteria and Lactobacilli to the levels seen in human milk fed infants.

Electromyographic Diagnosis of Ruminal Adhesion to Abdominal Wall in Korean Native Goats (한국재래산양에 있어서 제 1위의 복벽유착에 대한 근전도학적 진단)

  • Cheong, Jong-tae;Cheong, Chang-kook;Nam, Tchi-chou
    • Korean Journal of Veterinary Research
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    • v.27 no.2
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    • pp.335-337
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    • 1987
  • This study was made to determine possibility of the electromyographic diagnosis of the experimentally induced adhesion of rumen to abdominal wall in goats. In goats with experimentally induced ruminal adhesion, the electromyograms were recorded at the abdominal wall accompanying with the ruminal motility. There were, however, no electromyographic recordings during ruminal motility in goats without ruminal adhesions. It was concluded that the electromygrams could be available for the diagnosis of the ruminal adhesion to abdomieal wall in ruminants.

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Enhanced Adhesion of Cu Film on the Aluminum Oxide by Applying an Ion-beam-mixd Al Seed Layar

  • Kim, Hyeong-Jin;Park, Jae-Won
    • Proceedings of the Korean Vacuum Society Conference
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    • 2012.08a
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    • pp.229-229
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    • 2012
  • Adhesion of Copper film on the aluminum oxide layer formed by anodizing an aluminum plate was enhanced by applying ion beam mixing method. Forming an conductive metal layer on the insulating oxide surface without using adhesive epoxy bonds provide metal-PCB(Printed Circuit Board) better thermal conductivities, which are crucial for high power electric device working condition. IBM (Ion beam mixing) process consists of 3 steps; a preliminary deposition of an film, ion beam bombardment, and additional deposition of film with a proper thickness for the application. For the deposition of the films, e-beam evaporation method was used and 70 KeV N-ions were applied for the ion beam bombardment in this work. Adhesions of the interfaces measured by the adhesive tape test and the pull-off test showed an enhancement with the aid of IBM and the adhesion of the ion-beam-mixed films were commercially acceptable. The mixing feature of the atoms near the interface was studied by scanning electron microscopy, Auger electron spectroscopy, and X-ray photoelectron spectroscopy.

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Labial Adhesions in Children - Report of Two Cases - (소아의 소음순유착증 - 2예 보고 -)

  • Choi, Soon-Ok;Park, Woo-Hyun
    • Advances in pediatric surgery
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    • v.15 no.2
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    • pp.166-172
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    • 2009
  • Labial adhesion in prepubertal girls is a common gynecologic problems. The labia minora are fused by thin transparent or thick fibrous membrane in the midline from the clitoris to posterior fourchet. The prevalence of labial adhesion may be even greater because many children with labial fusions are asymptomatic and these cases remain unreported. They are often unrecognized by physician and parents because most of symptomatic children complained urinary symptoms. The authors experienced 2 cases of labial adhesion in girls; one asymptomatic partial fusion and the other symptomatic complete fusion. These lesions were treated successfully by mechanical separation of labial adhesion and petroleum ointment (Vaseline) application without recurrence in follow-ups.

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Surface Modification of Polypropylene by Low Temperature Plasma Polymerization( I ) ―hydrophilicity― (저온 Plasma 중합에 의한 Polypropylene의 표면 개질 (I) -친수성-)

  • Chang, Du Sang;Cho, In Sul
    • Textile Coloration and Finishing
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    • v.8 no.2
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    • pp.8-15
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    • 1996
  • This research was attempted to improve the hydrophilicity of polypropylene(PP) by using low temperature plasma polymerization of acrylic acid(AA) as a starting material. The results of the present study were as follows: The PP films deposited with AA plasma polymer showed excellent hydrophilicity, that the polar parts were about 20 dyn/cm, and also that the surface tensions were about 55 dyn/cm, whereas the disperse parts were not changed. Work of adhesions of the PP films deposited with AA plasma polymer were above 100 erg/ $cm^{2}$. AA plasma polymer formed by low temperature plasma polymerization of acrylic acid(AA) was even thin layer which contained many -OH groups.

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Vascular Endothelial Cadherin-mediated Cell-cell Adhesion Regulated by a Small GTPase, Rap1

  • Fukuhra, Shigetomo;Sakurai, Atsuko;Yamagishi, Akiko;Sako, Keisuke;Mochizuki, Naoki
    • BMB Reports
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    • v.39 no.2
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    • pp.132-139
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    • 2006
  • Vascular endothelial cadherin (VE-cadherin), which belongs to the classical cadherin family, is localized at adherens junctions exclusively in vascular endothelial cells. Biochemical and biomechanical cues regulate the VE-cadherin adhesive potential by triggering the intracellular signals. VE-cadherin-mediated cell adhesion is required for cell survival and endothelial cell deadhesion is required for vascular development. It is therefore crucial to understand how VE-cadherin-based cell adhesion is controlled. This review summarizes the inter-endothelial cell adhesions and introduces our recent advance in Rap1-regulated VE-cadherin adhesion. A further analysis of the VE-cadherin recycling system will aid the understanding of cell adhesion/deadhesion mechanisms mediated by VE-cadherin in response to extracellular stimuli during development and angiogenesis.

Adhesion Strength Measurement of Chondrocyte (연골세포 부착력 평가)

  • Lee K. Y.;Park S. K.;Shin Deahwan;Park J. C.
    • Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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    • 2004.11a
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    • pp.362-366
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    • 2004
  • Quantitative evaluation of substrates for cells is essential to understanding cell-material adhesive interaction and it is also necessary for the development of new biomaterials. Many cells on adhesive molecules will form an organization of actin into bundles and production of the large, highly organized structures termed focal adhesions. To better understand adhesion formations between cells and substrata, we have quantified the force required to displace attached cell. we allowed rabbit knee chondrocyte to attach on a substratum of microscope slide glass. Our results demonstrate that a force is required to detach cells is changed according to detachment time variation.

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A Case of Labial Adhesion (음순 유착(Labial Adhesion) 1례)

  • Roh, Ha Young;Oh, Chan Kyun;Son, Kyung Ran;Kook, Jin Hwa;Choi, Young Youn
    • Clinical and Experimental Pediatrics
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    • v.46 no.12
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    • pp.1271-1273
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    • 2003
  • Labial adhesions are postnatal fusion of the labia minora in the midline of varying degrees. They are postulated to be the result of low estrogen levels in the prepubertal child and possibly of a chronic inflammatory process. Topical treatment with conjugated estrogens has been the mainstay of therapy. We experienced one case of labial adhesion in an infant who was treated with estrogen cream for three weeks without any complication. Here we present this case with a brief review of the literature.

Delayed Detected Unexpected Complication of ADCON-$L^{(R)}$ Gel in Lumbar Surgery

  • Kim, Sung-Bum;Lim, Young-Jin
    • Journal of Korean Neurosurgical Society
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    • v.48 no.3
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    • pp.268-271
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    • 2010
  • The ADCON-L $gel^{(R)}$ (Gliatech, Cleveland, OH, USA), a carbohydrate polymer gel. has been shown in a controlled clinical study to inhibit postsurgical adhesions and improve a patient's clinical outcome. Immediate complication of this gel has been reported in the recent literature including back pain, radiculitis and durotomy. However, delayed detection of disturbance of muscle healing and attachment in late postoperative state has been rarely reported. This report documents an unexpected delayed detected complication of the anti-adhesion barrier gel. which was used after lumbar discectomy one year ago, with review of literature.