• Title/Summary/Keyword: Protein Stiffness

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Hydrophilic Finish of Polyester Fabrics using Sericin Finishing Agents (세리신 가공제에 의한 폴리에스터 직물의 친수화 가공)

  • Park, In-Woo;Hwang, Gye-Soon;Hong, Young-Ki;Bae, Han-Soo;Bae, Kie-Seo
    • Textile Coloration and Finishing
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    • v.21 no.1
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    • pp.38-45
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    • 2009
  • First of all, the properties imparted to PET fabrics are resistance to and recovery from creasing or wrinkling when wet or dry; high resistance to stretch in the filament yarns but not in the staple; high abrasion resistance; good texture and appearance; resistance to heat ageing; good chemical resistance and good resistance, behind glass, to sunlight. But, the low moisture regain of PET fabric conduces to static troubles in textile processing. Furthermore, garments made from PET may, during wear, develop electric charges which attract to the fabric particles of soil(dirt, swarf, dust) flying in the air, so that the cuffs of shirts, for example, become soiled quickly and are not easily laundered clean. The sericin constitutes 25$\sim$30% of silk protein and surrounds the fibroin fiber with sticky layer that supports the formation of a cocoon. The useful biochemical properties of sericin protein are oxidation resistant, antibacterial, UV resistant, hydrophilic property, and good affinity with hydrophobic material. These properties can be used as an improving reagent or a coating agent for natural and synthetic fibers, fabrics, and other intermediate products. The sericin is also applied to cross-link, and can be blended with other materials. In this study, we modified the surface of PET fabric by mixture of sericin finishing agent; sericin, polyuretane binder and 1,2,3,4-butanetetracarboxylic acid (BTCA) cross-link agent. Also, we investigated the finshing effect; moisture regain, stiffness, handle, drape and electrostatic. The moisture regain of PET fabric treated with sericin finishing agent was higher than that of untreated PET fabric. As a result of evaluating influence about handle of PET fabrics treated with sericin finishing agent, it was confirmed that the sericin finishing agent could be use as a linen like finishing agent.

Sparassis crispa (Wulf.) Extract Inhibits IL-1β Stimulated Inflammatory Mediators Production on SW1353 Human Chondrocytes (인간 유래 연골세포에서 꽃송이버섯 추출물의 염증성 매개인자 억제 효과)

  • Kim, Eun-Nam;Jeong, Gil-Saeng
    • Korean Journal of Pharmacognosy
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    • v.49 no.4
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    • pp.305-311
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    • 2018
  • Osteoarthritis (OA) is the most common form of joint disease, characterized by articular cartilage, osteonecrosis, and osteochondral bone erosion. It is an early, progressive disease that combines joint stiffness and joint pain and reduces cartilage function and condition. Interleukin-1 beta ($IL-1{\beta}$) is thought to be important to the pathogenesis of OA and significantly increases the expression of matrix metalloproteinases (MMPs), which play an important role in cartilage degradation in OA. Sparassis crispa (Wulf.) is an edible / medicinal mushroom that has been reported to variety of biological activities. In this study, investigated the Anti-inflammatory effect of Sparassis crispa (Wulf.) ethanol extract (SCE) on $IL-1{\beta}$ stimulated SW1353 chondrocytes. SCE decreased the expression and activity of MMPs by $IL-1{\beta}$ and decreased the levels of cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS) associated with the inhibition of prostaglandin E2($PGE_2$) in $IL-1{\beta}$ stimulated SW-1353 chondrocytes. In addition, SCE inhibits the expression of MAPK (mitogen-activated protein kinase) and $NF-{\kappa}B$ (nuclear factor-kappa B) signaling in $IL-1{\beta}$ stimulated SW-1353 cells, and SCE inhibits the production of reactive oxygen species (ROS) through heme oxygenase-1 (HO-1) expression. Thus, it is suggested that SCE has a potential as an anti-inflammatory agent in osteoarthritis treatments.

Plasma Surface Modification of Patterned Polyurethane Acrylate (PUA) Film for Biomedical Applications

  • Yun, Young-Shik;Kang, Eun-Hye;Yun, In-Sik;Kim, Yong-Oock;Yeo, Jong-Souk
    • Proceedings of the Korean Vacuum Society Conference
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    • 2015.08a
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    • pp.223.2-223.2
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    • 2015
  • Polyurethane acrylate (PUA) has been introduced to utilize as a mold material for sub-100 nm lithography as it provides advantages of stiffness for nanostructure formation, short curing time, flexibility for large area replication and transparency for relevant biomedical applications. Due to the ability to fabricate nanostructures on PUA, there have been many efforts to mimic extracellular matrix (ECM) using PUA especially in a field of tissue engineering. It has been demonstrated that PUA is useful for investigating the nanoscale-topographical effects on cell behavior in vitro such as cell attachment, spreading on a substrate, proliferation, and stem cell fate with various types of nanostructures. In this study, we have conducted surface modification of PUA films with micro/nanostructures on their surfaces using plasma treatment. In general, it is widely known that the plasma treated surface increases cell attachment as well as adsorption of ECM materials such as fibronectin, collagen and gelatin. Effect of plasma treatment on PUA especially with surface of micro/nanostructures needs to be understood further for its biomedical applications. We have evaluated the modified PUA film as a culture platform using adipose derived stem cells. Then, the behavior of stem cells and the level of adsorbed protein have been analyzed.

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Inhibitory Effect of Sparassis crispa (Wulf.) Extract on Monosodium Iodoacetate Induced Osteoarthritis (꽃송이버섯 추출물의 Monosodium Iodoacetate로 유도된 골관절염 억제 효과)

  • Kim, Eun-Nam;Roh, Seong-Soo;Jeong, Gil-Saeng
    • Korean Journal of Pharmacognosy
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    • v.49 no.3
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    • pp.262-269
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    • 2018
  • Sparassis crispa (Wulf.) is an edible/medicinal mushroom and has been reported to biological activities such as antitumor, anti-angiogenesis, antioxidant and wound healing. However, there have not been many researches on osteoarthritis of S. crispa. The aim of this study was to investigate the effects of S. crispa extract on rats with osteoarthritis induced by MIA. Osteoarthritis is a gradually developmental disease that early stage, causes joint stiffness and complains of joint pain. In addition, it gives rise to edema and hypo-function. The results of this study, S. crispa extract effectively inhibited ROS production, increased the production of antioxidant protein SOD and catalase in knee joint cartilage tissue. In addition, S. crispa extract inhibited the expression of pro-inflammatory cytokines and enzymes such as NOX4 and $P47^{phox}$, which are involved in the expression of COX-2, iNOS and the production of ROS. Also, S. crispa extract inhibited the destruction of synovial tissue, cartilage tissue and proteoglycans in articular cartilage in rats.

A Case of Hunter Syndrome Presented with Chronic Purulent Rhinorrhea in 24-month-old Boy (24개월에 만성 화농성 비루를 주소로 내원하여 진단된 헌터 증후군 1례)

  • Kim, I An;Jin, Jang Yong;Park, Jae Ock;Hong, Yong Hee
    • Journal of The Korean Society of Inherited Metabolic disease
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    • v.15 no.3
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    • pp.160-164
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    • 2015
  • Hunter syndrome(Mucopolysaccharidosis type II, MPS type II) is an X-linked disorder of glycosaminoglycans (GAGs) metabolism caused by an iduronate-2-sulfatase (IDS2) deficiency. A 24-month-old boy visited the department of pediatrics with the chief compliant of chronic purulent rhinorrhea beginning at age one. He had a history of repeated acute otitis media and chronic rhinitis. On physical examination he had a coarse face, enlarged tongue, distended abdomen, joint stiffness, and Mongolian spots at his first visit. The urine GAGs level was elevated at 66.10 mg/mmolCr (reference range, <11.1) and iduronate-2-sulfatase activity in leukocyte was decreased at 0.21 nmol/mg protein/hr (reference range, 18.7-57). Finally with an IDS gene mutational analysis, recombinant known mutation between intron 7 and distal of exon 3 in IDS2 was detected. Recombinant iduronate-2-sulfatase therapy was started without any infusion related reactions. The author highlights the importance of suspecting Hunter syndrome when pediatric patients visit with chronic purulent rhinorrhea which is a common cause of hospital visits for infants and children.

Two Cases of Spontaneous Intracranial Hypotension Treated with Epidural Blood Patch (자발성 두개내 저압환자의 경막외 혈액봉합술 치험 2예)

  • Cho, Soung-Kyung;Joo, Hyun-Chul;Park, Chan-Hong;Kim, Bong-Il;Lee, Sang-Hwa;Oh, Hee-Jong
    • The Korean Journal of Pain
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    • v.12 no.1
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    • pp.152-156
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    • 1999
  • Spontaneous intracranial hypotension (SIH) is a rare syndrome which causes postural headache associated with low cerebrospinal fluid (CSF) pressure, without preceding events such as lumbar puncture, back trauma, operative procedure or illness. The headche is usually accompanied by nausea, vomiting, tinnitus, neck stiffness, vertigo, photophobia and in rare cases diplopia, transient visual obscuration. Brain MRI may show subdural effusion, downward displacement of brain and diffuse and continuous meningeal enhancement when enhanced by gadolinium. Low opening pressure was shown through lumbar puncture. The value of protein and cell count of CSF may be slightly elevated. This syndrome usually resolves itself spontaneously or with strict bed rest. When the headache is persistent or incapacitating, more aggressive treatment may be necessary. We treated two cases of SIH in which epidural blood patch produced immediate and complete relief of the symptoms.

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Meningitis Occurred during Continuous Lumbar Epidural Block -A case report- (지속적 요부 경막외 차단 중 발생한 뇌막염 -증례 보고-)

  • Lee, Seong-Yeon;Chae, Jeong-Hye;Choi, Bong-Choon;Chun, Tae-Wan;Kim, Jeong-Ho;Kim, Chan
    • The Korean Journal of Pain
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    • v.8 no.2
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    • pp.383-385
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    • 1995
  • Postpuncture headache is the most common complication of epidural block, others include abscission of the tip of catheter, epidural abscess and subarachnoid infection, etc. A 69-year-old female patient visited the Neuro-Pain Clinic of Seran General Hospital for treatment of lower back pain and both sciatica. She received continuous epidural block, psoas compartment block, lumbar facet joint block and lumbar facet thermocoagulation. During the epidural block procedure the dura was accidently punctured and auto-logous blood patch was performed. Three days later, she manifested fever, nausea, vomiting, mild neck stiffness and mental deterioration. Meningitis was suspected as the cause of these signs. The CSF study reported: protein 400 mg/dl, sugar 14 mg/dl, WBC $468/mm^3$. She was recovered from the meningitis after adequate antibiotic therapy.

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Quality Characteristics of Sponge Cake by Black Soybean Powder of Different Ratios (검은콩 분말의 배합비를 달리한 스펀지 케이크의 제조 및 품질 특성)

  • Jeong, Hyun-Chul;Yoo, Seung-Seok
    • Journal of the East Asian Society of Dietary Life
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    • v.20 no.6
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    • pp.909-915
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    • 2010
  • In order to determine the most effective ratio of black soybean powder as an ingredient in cake, black soybean power was added at ratio of 10, 20, 30, and 40% versus wheat flour set as 0(control). Black soybean powder consisted of moisture(8.44%), crude protein(31.34%), crude fat(6.64%), crude ash(3.88%) and carbohydrates(49.70%). The specific gravity, spreadability, and baking loss increased according to the amount of black soybean powder, although specific volume decreased. The chromaticity 'L' and 'b' values of sponge cake with black soybean powder showed an reducing trend while the 'a' value displayed an increasing trend with an increase in black soybean powder. The texture properties of sponge cake with added black soybean powder showed an increasing trend in hardness and stiffness when the cake contained more black soybean powder. The sensory test for sponge cake with added black soybean powder showed high preference for 20% added black soybean powder to sponge cake.

Aseptic Meningitis after a Lumbar Epidural Steroid Injection -A case report- (요부 경막외 스테로이드 주입 후 발생한 무균성 수막염 -증례 보고-)

  • Hwang, Byeong Mun;Leem, Jung Gil
    • The Korean Journal of Pain
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    • v.18 no.1
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    • pp.52-55
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    • 2005
  • Complications following a well conducted epidural steroid injection are rare. A 50-year-old man developed a headache and neck stiffness 2 days after a lumbar epidural steroid injection. Under the impression of aseptic meningitis, fluid and nonsteroidal anti-inflammatory drug therapy was started immediately after cerebrospinal fluid (CSF) sampling. The CSF was turbid, and revealed a white blood cell count, protein, glucose and pressure of $550/{\mu}l$ (98% lymphocyte), 107.9 mg/dl, 48 mg/dl (serum 113 mg/dl) and $17cmH_2O$, respectively. The CSF stain and culture, and antibody test and polymerase chain reaction for pathogens were negative. A computed tomography (CT) scan of the brain revealed no abnormality, and a chest roentgenogram and the results of the neurological examination were normal. Under the impression of aseptic meningitis, the condition was managed conservatively, without antibiotics. Seven days later, the clinical symptoms had improved, and the patient discharged.

Delayed Postoperative Paravertebral Abscess in a Patient with Cervical Spinal Cord Injury Accompanied by Ankylosing Spondylitis (강직성 척수염이 있는 경수 손상 환자에서 발생한 지연성 척추주위 농양)

  • Lee, Geon Jae;Lee, Jang Woo
    • Clinical Pain
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    • v.20 no.2
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    • pp.145-149
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    • 2021
  • Ankylosing spondylitis (AS) is a chronic inflammatory disease presenting progressive spinal stiffness and sacroiliitis. Cervical spine fracture combined with AS should be treated with operation, but it is closely related with increased rates of surgical site infection, which are associated with an elevated erythrocyte sedimentation rate and elevated C-reactive protein. We report a case of delayed postoperative infection appeared in cervical paravertebral space, which was masked by laboratory findings and clinical characteristics represented in this rheumatic disease. A 53-year-old man who had medical history of AS got operation after cervical spine fracture. During hospitalization, he experienced aching pain originating from left posterior neck to shoulder, which was revealed out to be delayed postoperative infection, diagnostically obscured by elevated values of inflammatory markers. This case emphasizes detailed evaluation considering symptoms and comorbidity of the patient should be performed to apply proper management.