• Title/Summary/Keyword: 골주사

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Osteoarthritis of the Temporomandibular Joint (측두하악관절의 골관절염)

  • Lee, Jeong-Yun
    • Journal of Oral Medicine and Pain
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    • v.38 no.1
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    • pp.87-95
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    • 2013
  • Osteoarthritis (OA) of the temporomandibular joint (TMJ) is a severe form of temporomandibular disorders (TMDs), presenting gradual breakdown of articular cartilage and subchondral bone by the functional load sustained to exceed the physiologic tolerance of the joint. In such a joint loaded, offensive bioactive materials such as matrix degrading proteins, cytokines, and free radicals increase in concentration to shift the tissue response in the joint to degeneration from regeneration or remodeling. Recently, it has been issued that obesity can play an offensive role in pathogenesis of OA in a metabolic way. Adipokines released by adipose cells are present at higher concentration in the arthritic joint and joints of obese individuals. However, because of conflicting data reported, further scientific study should be performed to elucidate the practical role of adipokines in pathogenesis of TMJ OA. As far as the clinical signs and symptoms of TMJ OA are not much different from those of other forms of TMD and any definitive treatment modality to control directly the bone resorptive activity is not available yet, the treatment of TMJ OA should be directed to reduce the physical load and enhance the physiologic tolerance of the joint by means of conservative treatment such as physical therapy, medication, and occlusal splint therapy for sufficient period and, if needed after that, supplementary surgical procedure such as intra-articular injection, arthrocenthesis, and arthroscopic surgery that have turned out to be effective to control OA signs and symtpoms. Enthusiastic reassurance and motivation for patients to control behaviors for themselves to reduce unnecessary functional load in daily life is very important for the joint to reach to more favorable orthopedic stability of the TMJ more quickly, guaranteeing more successful management TMJ OA.

Effects of Aconitum pseudo-laeve on Nitric Oxide Synthase in the Periaqueductal Gray of Collagenase-induced Rat Osteoarthritis Model (진범 약침이 collagenase로 유도된 흰쥐 골관절염 모델에서 NOS 발현에 미치는 영향)

  • Kim, Hyun-Soo;Seo, Il-Bok;Park, Se-Keun;Kim, Jeong-Seon;Seo, Jung-Chul;Choi, Sun-Mi;Koo, Sung-Tae;Kim, Ee-Hwa
    • Korean Journal of Acupuncture
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    • v.23 no.1
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    • pp.87-94
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    • 2006
  • 목적 :본 연구는 collagenase로 유도된 흰쥐의 골관절염 모델에서 진범약침자극이 흰쥐 dorsolateral periaqueductal gray (DL-PAG)에서 NOS 및 nNOS 발현에 미치는 영향을 관찰하였다. 방법 : 흰쥐의 관절강내로 collagenase 용액을 주사하여 골관절염 모델을 만들고 정상군, 대조군 및 진범약침군으로 실험군을 분류한 후, nNOS(neuronal NOS)와 NOS에 대하여 미치는 영향을 nNOS immunohistochemistry와 nicotinamide adenine dinucleotide phosphate-diaphorase(NADPH-d) 검사법을 통하여 조사하였다. 결과 : 골관절염이 유발된 흰쥐의 DL-PAG 영역에서 nNOS와 NOS의 발현억제가 관찰되었으며, 진범약침군이 collagenase로 유도된 골관절염에서 감소된 nNOS와 NOS의 발현이 증가되었다. 결론 : 본 연구를 통하여 진범약침자극은 골관절염이 유발된 흰쥐의 DL-PAG에서의 nNOS와 NOS의발현에 영향을 미친다는 결과를 얻을 수 있었다.

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Bone Cements in TTCP, DCPA, β-TCP and PHA System (TTCP-DCPA-β-TCP-PHA계 골 시멘트)

  • ;;;Rainer Telle
    • Journal of the Korean Ceramic Society
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    • v.39 no.1
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    • pp.57-67
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    • 2002
  • The effect of $\beta$-TCP and PHA as additives on initial setting time, compressive strength and surface micro-structure after in vitro test of bone cement in TTCP and DCPA system was investigated. The median particle sizes of TTCP, $\beta$-TCP, DCPA and PHA for bone cement were about 3, 5, 0.9 and 4${\mu}{\textrm}{m}$, respectively. Initial setting time and compressive strength of bone cement with various composition was measured by Vicat test and Universal Testing Machine, and surface morphology and crystalline phases of bone cements were observed and analyzed by SEM and x-ray diffractometer. Initial setting time was not affected by composition but by powder/liquid ratio, and cement with PHA required double amount of solution for paste as much as one without PHA, especially. It was thought that $\beta$-TCP and PHA in bone cements was not related to setting reaction. Thus, the addition of $\beta$-TCP and PHA in bone cements decreased compressive strength and inhabited HAP from being produced on surface in vitro test. In conclusion, it was not expected that $\beta$-TCP and PHA in TTCP-DCPD bone cements enhanced the strength and bioacitivity.

ACTIONS OF RECOMBINANT $INTERLEUKIN-1{\beta}$, TUMOR NECROSIS $FACTOR-{\alpha}$ AND INTERLEUKIN-6 ON BONE RESORPTION IN VITRO (RECOMBINANT $INTERLEUKIN-1{\beta}$, TUMOR NECROSIS $FACTOR-{\alpha}$ 및 INTERLEUKIN-6의 골흡수 유도 효과에 관한 연구)

  • Lee, Yong-Moo;Choi, Sang-Mook
    • Journal of Periodontal and Implant Science
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    • v.24 no.1
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    • pp.155-164
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    • 1994
  • 치조골흡수는 만성치주질환의 전형적인 증상이다. 골흡수에 작용하는 여러 요인들 중에서도, 특히 최근에 들어서 몇몇 cytokine들에 대한 관심이 높아지고 있는데, interleukin-1(IL-1), tumor necrosis factor(TNF) 및 interleukin-6(IL-6) 등이 치주질환의 진행과정에서 중요한 치조골흡수요인으로 제안되고 있다. 본 연구의 목적은 신생쥐의 골조직 배양실험을 통해서 recombinant human $interleukin-1{\beta}$ ($rHuIL-1{\beta}$), recombinant human tumor necrosis $factor-{\alpha}$($rHuTNF-{\alpha}$) 및 recombinant human interleukin-6(rHuIL-6) 의 골흡수 유도효과를 알아보고, cyclooxygenase 억제제인 indomethacin과 recombinant murine $interferon-{\gamma}$($rMurIFN-{\gamma}$)가 이들 cytokine의 골흡수 유도능력에 미치는 영향을 알아봄으로써 이들 cytokine의 작용기구에 대해서 알아보고자 하는데 있다. 생후 1-2일된 쥐에게 $1{\mu}Ci^{45}CaCl_2$를 피하주사하고 4일 후에 쥐를 희생시켜 $^{45}Ca$ 로 표지된 두개골을 얻어 24시간 전배양 후, 각 cytokine ($rHuIL-1{\beta}$, $rHuTNF-{\alpha}$ 및 rHuIL-6)과 cytokine 및 첨가약제 (indomethacin 및 $rMurIFN-{\gamma}$)가 함유된 배지로 교환하여 48시간 배양한다. 골흡수 유도효과는 두개골에서 48시간의 배양 중 유리되는 $^{45}Ca$의 방사능 정도로 평가하였다. 본 연구를 통해 다음과 같은 결과를 얻었다. 1. $rHuIL-1{\beta}$ ($10^{-12}-10^{-9}M$) 및 $rHuTNF-{\alpha}$ ($10^{-10}-10^{-8}M$)는 농도변화에 따르는 골흡수 유도효과를 보였으나 , rHuIL-6 ($10^{-10}-10^{-8}M$)는 유의할 만한 효과를 보이지 않았다. 2. Indomethacin ($10^{-6}M$)은 $rHuIL-1{\beta}$$rHuTNF-{\alpha}$의 골흡수 유도작용에 유의할 만한 억제효과를 나타내지 않았다. 3. $rMurIFN-{\gamma}$ (1000 U/ml) 은 $rHuIL-1{\beta}$$rHuTNF-{\alpha}$의 골흡수 유도작용에 유의한 억제효과를 나타내었다. 본연구를 통해 치주질환 환자의 치주조직에서 검출되는 $IL-1{\beta}$$TNF-{\alpha}$가 치조골 흡수에 중요한 역할을 할 것으로 생각된다.

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Physicochemical Properties of Chufa (Cyperus esculentus L., var sativus Boeck) Starch (기름골 전분의 이화학적 특성)

  • Han Sang-Ha;Lee Hyun-Yu;Kum Jun-Seok;Park Jong-Dae
    • Food Science and Preservation
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    • v.13 no.3
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    • pp.382-388
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    • 2006
  • Physicochemical properties of chufa starch were investigated The result are summarized as follow: Moisture content crude protein and crude fat were 10.10%, 0.31% and 0.41,% respectively. Amylose content of chufa starch was 41.6% and blue value was 0.49. Lightness and whiteness of chufa starch was 96.36 and 92.23 of Hunter's color value. In iodine reaction, maximum absorbance wavelength (${\lambda}max$) was 628 nm. Water binding capacity was 83% and swelling power and solubility of chufa starch were increased slowly to $60^{\circ}C$, but increased rapidly after $60^{\circ}C$. Scanning election microscope(SEM) showed that granule type of chufa starch was round or elliptic type, and average granule size was $10{\mu}m$. The results by differential scanning calorimetry(DSC) revealed that gelatinization patterns were similar to those of potato or rice starch. In rapid viscoanalyzer(RVA) examination, pasting temperature was $79.95^{\circ}C$ and peak viscosity of chufa starch was 385.08.

Assessment of the permanent canine bone support after secondary bone graft In UCLP patients (편측성 순구개열 환자에서 이차 골이식후 맹출된 영구 견치의 치조골 지지도에 관한 연구)

  • Park, Ki-Tae
    • The korean journal of orthodontics
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    • v.31 no.6 s.89
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    • pp.601-610
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    • 2001
  • The purpose of this retrospective study was to evaluate the level oi alveolar bone support of the erupted Permanent canine through the reconstructed cleft region compared to the contralateral canine on the non-cleft side. This study was limited to children with complete unilateral cleft lip and palate who underwent secondary alveolar iliac bone gvaft and the apices of the erupted canine roots were closed at the time of evaluation. With these criteria the study included 21 children whose average age at the time of bone graft reconstruction was 9.8 years, with a minimum of 12.4 years of age at the time of the evaluation. The study was limited to the use of iliac cancellous bone as the autograft material for reconstruction of the alveolar cleft. Cranial bone graft and other autogenous bone sources were excluded. The periapical radiographs were used to evaluate alveolar bone level of each canine. The percentages of root supported by the bone were established by dividing the amount of root covered with the bone by the anatomic root length. The canine oi the non-cleft side was used as an internal control and the canine on the cleft side was used as an experimental. There was a statistically significant difference in the alveolar bone support ratio between the control ($92.9\%$) and experimental canines ($8.7\%$). An average of $95\%$ level of alveolar bone support was achieved for the experimental canine in comparison to the control canine. Neither the presence of lateral incisor, nor the stage of root development of the canine at the time of the bone graft appeared to have affected the alveolar bone support ratio of the canine after the secondary bone graft.

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Skip Metastasis in Osteosarcoma (Report of 3 cases) (골육종의 도약전이 (3례보고))

  • Rhee, Seung-Koo;Song, Seok-Whan;Kwon, Soon-Yong;Ryoo, Seung-Joon
    • The Journal of the Korean bone and joint tumor society
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    • v.3 no.2
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    • pp.119-126
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    • 1997
  • From 1980 to 1997, we experienced 3 skip metastasis in femur out of 19 osteosarcoma patients. After diagnostic incisional biopsy and chemotherapy, hip disarticulations for all patients were performed. Still the mechanism of skip metastasis is unclear, but there have been two suggestions including medullary extension through an intraosseous embolism of tumor cells, or trans articular extension along the planes of fascia, capsule, ligaments, and venous channels around joints. The mechanisms of skip metastasis in our cases were not clear, but it was considered as an initial preliminary stage of metachronous osteosarcoma. If there are evidences of skip metastasis, it is strongly recommended to disarticulate proximal to the skip lesion rather than to amputate transmedullary.

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한국형다목적헬기(KMH)개발사업

  • 한국항공우주산업진흥협회
    • Aerospace Industry
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    • v.84
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    • pp.4-9
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    • 2004
  • KMH, 즉 한국형 다목적헬기의 개발사업이 시작되었다. 지난 10여년동안 500MD 후속기, 경전 헬기, 소형다목적헬기 등 다양한 이름으로 획득방안이 거론되었지만, 이제야 가시적인 모습을 갖추고 사업을 준비중에 있다. 사업의 소개의 앞서 한국형 다목적헬기라 명명하게 된 배경을 알아보면 한국형은 우리의 고유브랜드로 개발하고 개발된 헬기의 주사용여건이 백두대간을 중심으로 이어진 산악과 계곡, 수시로 변하는 계곡속의 골바람, 계곡의 협소한 기동공간에서도 원활한 비행이 가능한 규모 및 기체구조 등을 고려하여 개발한다는 의미로 사막이나 대평원에서 운용하는 헬기와는 크기, 엔진추력 등 많은 부분이 상이한 특성을 필요로 하기 때문에 붙여졌다.<중략>

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Tissue Engineered Bone Formation Using Porous Chitosan and Chitosan/Tricalcium Phosphate Matrices (Chitosan 및 Chitosan/Tricalcium Phosphate 다공성 기질을 이용한 조직공학적 골형성에 관한 연구)

  • Lee, Yong-Moo;Choi, Sang-Mook;Park, Yoon-Jeong;Lee, Seung-Jin;Ku, Young;Chung, Chong-Pyoung
    • Journal of Periodontal and Implant Science
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    • v.28 no.4
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    • pp.577-604
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    • 1998
  • chitosan은 골치유증진 및 골세포의 분화를 촉진하는 것으로 알려진 천연의 생분해성 고분자이다. 이연구에서는 chitosan 및 chitosan/tricalcium phosphate(TCP) 다공성 기질을 제조하여 골이식재 및 조직공학적 골형성을 위한 3차원적 세포배양 지지체로서의 가능성을 평가하고자 하였다. chitosan 용액 및 TCP가 포함된 chitosan 용액을 동결건조함으로써 소공의 크기가 $100-200{\mu}m$인 스폰지형태의 chitosan 및 chitosan/TCP 다공성 기질을 제작하였다. 골이식재로서의 효과를 평가하기 위하여 백서의 두개골 결손부에 제작된 chiosan 및 chitosan/TCP 다공성 기질을 각각 이식하고 2주 및 4주 후에 동물을 희생하여 조직학적으로 치유양상을 관찰하였다. 조직공학적 골형성을 위한 세포배양 지지체로서의 가능성을 평가하기 위하여 백서 태자의 두개골에서 분리된 골아세포를 chitosan 및 chitosan/TCP 다공성 기질에 각각 접종하고 56일간 배양하면서 각 기간 별로 세포수, 염기성 인산효소 활성, 축적된 calcium의 양을 측정하였고 배양된 세포-기질 혼합체를 광학현미경 및 주사전자현 미경하에서 조직학적 관찰을 시행하였다. 백서 두개골결손부에 이식된 chitosan 및 chiosan/TCP 다공성 기질은 별다른 이물반응 없이 자연 분해되면서 신생골조직 내에 매립되었으며 이식하지 않은 대조군에 비해 유의하게 높은 신생골형성 효과를 나타내어 우수한 골전도성이 있음이 확인되었다. 신생골형성 양상이나 형성된 양에 있어서 두 가지 기질간의 유의한 차이는 없었다. 골아세포-기질 혼합체의 배양결과, 접종후 배양 28일 경과 시까지 골아세포수는 지속적으로 증가하다가 이후에는 5 8일까지 성장정도가 둔화되었다. 염기성 인산효소의 활성 및 calcium 축적량은 접종후 배양시간경과에 따라 56일까지 지속적으로 증가하였다. 세포수 및 염기성 인산효소의 활성에서 두 기질간의 유의한 차이는 없었고, calcium 축적량에 있어서는 chitosan/TCP 기질에서 유의하게 높았고 증가속도도 컸다. 배양된 골아세포가 접종된 다공성 기질의 조직학적 관찰결과, 골아세포는 다공성 기질에 잘 부착하여 중층의 형태로 성장하면서 광화된 골기질을 형성함이 관찰되었다. 배양 14일부터 작은 골편형태의 골형성이 기질 표면에 부착되어 관찰되었고, 배양기간이 길어짐에 따라 성장하여 배양 56일째에는 상당한 양의 광화된 골질이 형성됨이 관찰되었다. 배양 56일 경과후의 광화된 골질의 양은 chitosan/TCP 기질에서 더 많았다. 이 연구의 결과, chitosan 및 chitosan/TCP 다공성 기질이 골이식재로서 뿐만 아니라, 조직공학적 골형성에 적용되는 골아세포의 배양을 위한 3차원구조의 세포지지체로 이용되어 골재생술식에 유용한 생체재료로 활용될 수 있음이 확인되었다.

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The Removal of Contaminated Radiostrontium from Mice by Water Soluble Chitosan (카이토산을 이용한 방사성스트론튬 오염의 치료)

  • Bom, Hee-Seung;Kim, Kwang-Yoon;Yang, Kwang-Hee;Chae, Ki-Moon;Choi, Keun-Hee;Song, Ho-Chun;Kim, Ji-Yeul
    • Journal of Radiation Protection and Research
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    • v.19 no.3
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    • pp.230-234
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    • 1994
  • The aim of the present study was to elucidate the effect of the water soluble chitosans on the removal of contaminated radiostrontium (Sr-85) from the bone of mice. The remaining radioactivities in intravenously injected controls(group 1) were higher than in intraperitoneally injected controls (group 4, P<0.01). The % retention at day 5 were $57.7{\pm}1.9%,\;54.4{\pm}1.2%$, respectively. Single intravenous injection of 0.3% water soluble chitosan and continuous oral ingestion of 10% water soluble chitosan for 15 days were' ineffective on the removal of contaminated radiostrontiums. Multiple intravenous or intraperitoneal injections of water soluble chitosan effectively removed contaminated radiostrontiums(P<0.01 vs controls). In conclusion, water soluble chitosan might remove once incorporated radiostrontium from bones of mice. Further studies were needed to elucidate the mechanism of the removal.

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