• Title/Summary/Keyword: Functional changes

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Changes in Physicochemical Properties of Soybean Protein due to Acetylation during Incubation with Glucose

  • Kim, Myung-Hee;Kim, Jin-Hee;Kim, Kang-Sung
    • Journal of Environmental Health Sciences
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    • v.30 no.4
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    • pp.308-313
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    • 2004
  • Native and acetylated soybean protein with acetylation percentage of $25\%$ were incubated with glucose to induce Maillard reaction. Acetylation of ${\varepsilon}$-amino group of lysine residues changed the conformation of soybean protein. The direct uv spectrum of native and acetylated soybean protein showed conformational changes with accessibility of tyrosine and tryptophan residues increased. Acetylation suppressed Maillard reaction between soybean protein and glucose. Acetylated soybean protein showed improved water sorption, fat binding, foam formation, and emulsion activity of the protein, but depressed brown pigment development and trypsin digestion. Thus aceylation prevented deterioration of certain functional characteristics that occurred during storage, besides causing functional characteristics to be improved on its own.

Functional Changes of Spinal Sensory Neurons Following Gray Matter Degeneration

  • Park, Sah-Hoon;Park, Jong-Seong;Jeong, Han-Seong
    • The Korean Journal of Physiology
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    • v.30 no.2
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    • pp.289-297
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    • 1996
  • Excitatory amino acids (EAA) are thought to play an important role in producing cell death associated with ischemic and traumatic spinal cord injury. The present study was carried out to determine if the response characteristics of spinal sensory neurons in segments adjacent to degeneration sites induced by EAA are altered following these morphological changes. Intraspinal injections of quisqualic acid (QA) produced neuronal degeneration and spinal cavitation of gray matter. The severity of lesions was significantly attenuated by pretreatment with a non-NMDA antagonist NBQX. In extracellular single unit recordings, dorsal horn neurons in QA injected animal showed the increased mechanosensitivity, which included a shift to the left in the stimulus-response relationship, an increased background activity and an increase in the duration of after-discharge responses. Neuronal responses, especially the C-fiber response, to suprathreshold electrical stimulation of sciatic nerve also increased in most cases. These results suggest that altered functional states of neurons may be responsible for sensory abnormalities, e.g. allodynia and hyperalgesia, associated with syringomyolia and spinal cord injury.

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20S-dihydroprotopanaxatriol modulates functional activation of monocytes and macrophages

  • Kim, Mi-Yeon;Cho, Jae Youl
    • Journal of Ginseng Research
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    • v.37 no.3
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    • pp.300-307
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    • 2013
  • 20S-dihydroprotopanaxatriol (2H-PPT) is a derivative of protopanaxatrol from ginseng. Unlike other components from Panax ginseng, the pharmacological activity of this compound has not been fully elucidated. In this study, we investigated the modulatory activity of 2H-PPT on the cellular responses of monocytes and macrophages to understand its immunoregulatory actions. 2H-PPT strongly upregulated the release of radicals in sodium nitroprusside-treated RAW264.7 cells and the surface levels of costimulatory molecule CD86. More importantly, this compound remarkably suppressed nitric oxide production, morphological changes, phagocytic uptake, cell-cell aggregation, and cell-matrix adhesion in RAW264.7 and U937 cells in the presence or absence of lipopolysaccharide, anti-CD43 antibody, fibronectin, and phorbal 12-myristate 13-acetate. Therefore, our results suggest that 2H-PPT can be applied as a novel functional immunoregulator of macrophages and monocytes.

The Relationship Between Activities of Daily Living and Cognitive Score in Stroke Patients (뇌졸중 환자의 인지기능이 일상생활활동에 미치는 영향)

  • Lee, Seong-Ran;Kwon, Hyuk-Cheol
    • Physical Therapy Korea
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    • v.10 no.3
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    • pp.41-51
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    • 2003
  • The purpose of this study was to examine the effects of stroke patients' cognitive score on their the activities of daily living. The subjects of this study were 30 stroke patients who were admitted to T$\breve{a}$e-Bong hospital from November, 2002 to March, 2003. The subjects were administerd an MMSE as a cognitive assessment and an MBI as a functional assessment upon referral to physical therapy initially. The results were as follows: 1. The MMSE scores for the stroke patients were related to the patients' abilities to perform their activities of daily living. The changes of MBl scores significantly correlated with the changes of MMSE scores (p<.05). 2. The subjects with left hemispheric lesion scored higher in MMSE than those with right hemispheric lesions (p<.05). 3. The hemispheric lesions did not significantly affect the activities of daily living score (p>.05).

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Biomedicinal implications of high-density lipoprotein: its composition, structure, functions, and clinical applications

  • Cho, Kyung-Hyun
    • BMB Reports
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    • v.42 no.7
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    • pp.393-400
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    • 2009
  • High-density lipoprotein (HDL) is a proven biomarker for the monitoring of changes in antioxidant and anti-inflammation capability of body fluids. The beneficial virtues of HDL are highly dependent on its lipids and protein compositions, and their ratios. In normal state, the HDL particle is enriched with lipids and several HDL-associated enzymes, which are responsible for its antioxidant activity. Lower HDL-cholesterol levels (<40 mg/dL) have been recognized as an independent risk factor for coronary artery disease, as well as being a known component of metabolic syndrome. Functional and structural changes of HDL have been recognized as factors pivotal to the evaluation of HDL-quality. In this review, I have elected to focus on the functional and structural correlations of HDL and the roles of HDL-associated apolipoproteins and enzymes. Recent clinical applications of HDL have also been reviewed, particularly the therapeutic targeting of HDL metabolism and reconstituted HDL; these techniques represent promising emerging strategies for the treatment of cardiovascular disease, for drug or gene therapy.

A Relation between Functional Outcome and Changes of Tongue Inspection in Stroke Patients (중풍환자의 설상변화와 운동기능향상의 관련성 연구)

  • 최동준;김재관;문상관;조기호;김영석;배형섭;이경섭
    • The Journal of Korean Medicine
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    • v.21 no.3
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    • pp.113-118
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    • 2000
  • Objectives : Stroke patients have continuously increased and many studies have been performed to predict their prognosis. Tongue Inspection is a diagnostic method that has been widely used in oriental medicine. The aim of this study was to examine if stroke patients' motor recovery might be related to tongue inspection. Methods : MBI(Modified Barthel Index) and tongue inspection of stroke patients within 3 days of onset were assessed on admission and at 10 days following admission. Results : Functional recovery was significantly better in those who showed favorable changes of tongue, especially in tongue coat color(P=0.030) and thick and thin tongue coat(P=0.092). Conclusions : The results suggest that tongue inspection can be used to predict a prognosis of early stage stroke patients.

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A Study on the Prototype of Swallow-tailed Coat for Sports Dance (스포츠댄스용 연미복의 Prototype에 관한 연구)

  • Oh, Young-Soon;Kim, Yeo-Sook
    • Fashion & Textile Research Journal
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    • v.8 no.4
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    • pp.433-440
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    • 2006
  • This research was made to suggest a functional and fitted prototype of swallow-tailed coat for sports dance. We established the basic posture of standard dance from literature investigations, and grasped the changes of the body side-surface by motions through the gypsum-experiments with a man in twenty. The unfolded gypsum shells were overlapped on the basic swallow-tailed coats pattern drafted by their size of experimenter. From our results through analysis, our pattern of the swallow-tailed coats for sports dance was designed considering their functional and structural character. In case of upper body with the greatly increased shoulder width of garment and with the decreased front. When moving, owing to the rising of the armpit point, the side-line becomes longer with the shoulder length decreased greatly. In case of sleeves, the length of sleeves back increased greatly by the arm-bending motions while sleeve height becomes lowered.

Effects of ${\alpha}$-Chymotrypsin Modification on the Functional Properties of Soy Protein Isolates

  • Ahn Tae-Hyun;Lee Sook-Young
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.51 no.2
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    • pp.148-153
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    • 2006
  • Effects of ${\alpha}$-chymotrypsin modification on degree of hydrolysis (DH), solubility, emulsifying capacity and thermal aggregation of laboratory-purified soy protein isolate (SPI) using a lipoxygenase-defected soybean (Jinpum-kong) and commercial soy protein isolate (Supro 500E) were compared. SPIs were hydrolyzed by ${\alpha}$-chymotrypsin at pH 7.8 and $37^{\circ}C$ for 30 min. DHs of Supro 500E and Jinpum-kong SPI were increased by ${\alpha}$-chymotrypsin modification, and DH of Supro 500E was higher than that of Jinpum-kong SPI. DH of ${\alpha}$-chymotrypsin treated Jinpum-kong SPI was similar with untreated Supro 500E and DH of treated Supro 500E was the highest. Solubility, emulsifying capacity and thermal aggregation of SPIs were increased by ${\alpha}$-chymotrypsin modification, and these changes were highly related to changes in DH. Functional properties of Supro 500E were higher than Jinpum-kong SPI in both of untreated and ${\alpha}$-chymotrypsin treated SPIs.

Electro-catalytic Performance of PtRu Catalysts Supported on Urea-treated MWNTs for Methanol Oxidation

  • Park, Jeong-Min;Park, Soo-Jin
    • 한국신재생에너지학회:학술대회논문집
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    • 2009.11a
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    • pp.159-159
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    • 2009
  • In this work, nitrogen and oxygen functionalities was introduced to the graphite nanofibers (GNFs) and their effect on electrocatalytic performance of the GNF supports for direct methanol fuel cells (DMFCs) was invesigated. The nitrogen and oxygen groups were introduced through the urea treatments and acid treatment, respectively. And, PtRu catalysts deposited on modified GNFs were prepared by a chemical reduction method. The catalysts were characterized by means of elemental analysis, nitrogen adsorption, and X-ray photoelectron spetroscopy (XPS). The structure and morphological characteristics of the catalysts were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). As a result, the Pt-Ru nanoparticles were impregnated on GNFs with good formation in 3-5 nm. And, the cyclic voltammograms for methanol oxidation revealed that the methanol oxidation peak varied depending on changes of surface functional groups. It was thus considered that the PtRu deposition was related to the reduction of PtRu and surface characteristics of the carbon supports. The changes of surface functional groups were related to PtRu reduction, significantly affect the methanol oxidation activity of anode electrocatalysts in DMFCs.

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The changing of fitness and exercise guidelines for old adults (노인들의 체력 변화와 운동의 제언)

  • Yoon, Byung-Kon
    • Journal of Life Science
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    • v.17 no.6 s.86
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    • pp.867-872
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    • 2007
  • The aging is related to numerous changes in our body system which declines functional ability. The functional ability in advanced age can be evaluated by the 4 components of fitness (cardiorespiratory endurance, muscular strength and endurance, flexibility and body composition). The understanding and knowledge of changing 4 components of fitness and the role of exercise on the process of aging is of paramount importance. Despite exercise and physical activity have been shown to delay the process of aging, the exercise guidelines and recommendations for old adults are not well published. This review is to presents the age-related changes in each component of fitness and to present current guidelines and recommendations for exercise in older adults.