14 research outputs found

    Detection of human papillomavirus in neoplasms of upper aerodigestive tract and lung with its correlation to p53 mutation

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    ํ•™์œ„๋…ผ๋ฌธ(๋ฐ•์‚ฌ)--์„œ์šธ๋Œ€ํ•™๊ต ๋Œ€ํ•™์› :์˜ํ•™๊ณผ ๋ณ‘๋ฆฌํ•™์ „๊ณต,1996.Docto

    ๊ฒฝ์ œ์œ„๊ธฐ๋กœ ์ธํ•œ IMF ๊ด€๋ฆฌ์ฒด์ œํ•˜์—์„œ์˜ ํ•œ๊ตญ์ œ์•ฝ์‚ฐ์—…์˜ ์—ฐ๊ตฌ๊ฐœ๋ฐœ ๋ฐ ๊ธฐ์ˆ ํ˜‘๋ ฅ์ถ”์ด์— ๊ด€ํ•œ ์—ฐ๊ตฌ

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    ํ•™์œ„๋…ผ๋ฌธ(์„์‚ฌ)--์„œ์šธ๋Œ€ํ•™๊ต ๋ณด๊ฑด๋Œ€ํ•™์› :๋ณด๊ฑดํ•™๊ณผ ๋ณด๊ฑด์‚ฌํšŒํ•™์ „๊ณต,1999.Maste

    ์‚ฌ๋žŒ๊ตฌ๊ฐ•์ƒํ”ผ์„ธํฌ์—์„œ ์ฒœ์‹์—ฐ๊ด€ ์•Œ๋Ÿฌ๋ฅด๊ฒ์— ์˜ํ•œ ์‹œํ† ์นด์ธ์˜ ๋ฐœํ˜„

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    Dept. of Dental Science/๋ฐ•์‚ฌAsthma is a chronic inflammatory disease of the airway characterized by variable airflow obstruction and bronchial hyper-responsiveness. In addition, patients with asthma have been reported that high prevalence of dental caries and gingivitis, which are induced by low salivation due to the medication for asthma. However, it is not known that asthma related allergens such as house dust mite (HDM) and German cockroach extract (GCE) have direct effects on the generation of gingival inflammation. In the present study, I investigated the level of interlukin-8 (IL-8) mRNA expression and the characteristics of Ca2+ signal by GCE and HDM in the human gingival epithelial cells.HDM and GCE induced increases in IL-8 mRNA expression level and intracellular concentration of Ca2+ ([Ca2+]i), respectively. Endotoxin-free GCE activated protease-activated receptor (PAR) type2, but endotoxin-free HDM did not activate any PARs. In human gingival epithelial cells, whereas lipopolisacaride, a Gram-negative endotoxin, did not induce Ca2+ signal, HDM and GCE containing endotoxins induced Ca2+ signal from thapsigargin (Tg), an inhibitor of sarco/endoplasmic reticulum Ca2+ ATPase, -sensitive Ca2+ stores via phospholipase C (PLC)/inositol 1, 4, 5-trisphosphate (IP3) pathway. These results suggest that asthma related allergens induce Ca2+ signaling and cytokine release in human gingival epithelial cells.restrictio

    ๆ–ฐ็Ÿณๅ™จๆ™‚ไปฃ์˜ ้‡Žๅค–๏คฒๅ€์— ๋Œ€ํ•˜์—ฌ

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    ํ•™์œ„๋…ผ๋ฌธ(์„์‚ฌ)--์„œ์šธ๋Œ€ํ•™๊ต ๋Œ€ํ•™์› :๊ณ ๊ณ ๋ฏธ์ˆ ์‚ฌํ•™๊ณผ ๊ณ ๊ณ ํ•™์ „๊ณต,2005.Maste

    ๊ฐ‘์ƒ์„ ํ˜ธ๋ฅด๋ชฌ๊ณผ ํ‘œํ”ผ์„ฑ์žฅ์ธ์ž, ํ—คํŒŒ๋ฆฐ๊ฒฐํ•ฉ ํ‘œํ”ผ์„ฑ์žฅ์ธ์ž๊ฐ€ ์น˜์ฃผ์ธ๋Œ€์„ธํฌ์— ๋ฏธ์น˜๋Š” ์˜ํ–ฅ

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    Dept. of Dental Science/์„์‚ฌ[ํ•œ๊ธ€] ์™„์ „ํƒˆ๊ตฌ ๋œ ์น˜์•„์˜ ์˜ˆํ›„๋Š” ์‚ด์•„์žˆ๋Š” ์น˜์ฃผ์ธ๋Œ€์„ธํฌ์˜ ์˜ํ–ฅ์„ ๋ฐ›์œผ๋ฉฐ, ์™ธ์ƒ์œผ๋กœ ์™„์ „ํƒˆ๊ตฌ ๋œ ์น˜์•„๋ฅผ ์ €์žฅํ•˜๋Š” ๋ณด๊ด€์•ก์€ ์žฌ์‹ ์„ฑ๊ณต์˜ ์˜ˆํ›„์— ์ค‘์š”ํ•œ ์š”์†Œ์ด๋‹ค. ๋”ฐ๋ผ์„œ, ์ตœ๊ทผ์— ์น˜์ฃผ์ธ๋Œ€์„ธํฌ์˜ ์ƒ์กด์„ ์ฆ๊ฐ€์‹œํ‚ค๊ธฐ ์œ„ํ•œ ์ „์ฒ˜๋ฆฌ์ œ๋กœ์„œ ์„ฑ์žฅ์ธ์ž์™€ ํ˜ธ๋ฅด๋ชฌ์— ๋Œ€ํ•œ ์—ฐ๊ตฌ๊ฐ€ ์ง„ํ–‰๋˜๊ณ  ์žˆ๋‹ค. ์ด๋“ค ์ค‘ ๊ฐ‘์ƒ์„ ํ˜ธ๋ฅด๋ชฌ (์ดํ•˜ T3)๊ณผ ํ‘œํ”ผ์„ฑ์žฅ์ธ์ž (์ดํ•˜ EGF)๋ฐ ํ—คํŒŒ๋ฆฐ๊ฒฐํ•ฉ ํ‘œํ”ผ์„ฑ์žฅ์ธ์ž (์ดํ•˜ HB-EGF)๊ฐ€ ์—ฌ๋Ÿฌ ๊ธฐ๊ด€์˜ ์„ธํฌ ์ฆ์‹์„ ํ™œ์„ฑํ™” ์‹œํ‚จ๋‹ค๋Š” ๋งŽ์€ ๋ณด๊ณ ๊ฐ€ ์žˆ๋‹ค. ์ด ์—ฐ๊ตฌ์˜ ๋ชฉ์ ์€ ๊ฐ‘์ƒ์„ ํ˜ธ๋ฅด๋ชฌ, ํ‘œํ”ผ์„ฑ์žฅ์ธ์ž, ํ—คํŒŒ๋ฆฐ๊ฒฐํ•ฉ ํ‘œํ”ผ์„ฑ์žฅ์ธ์ž๊ฐ€ ์„ธํฌ์˜ ์ฆ์‹์— ๋ฏธ์น˜๋Š” ์˜ํ–ฅ์„ ์‚ดํŽด๋ณด๋Š” ๊ฒƒ์ด๋ฉฐ, ์ด ์ƒํ˜ธ ์ž‘์šฉ์ด ์„ฌ์œ ๋ชจ์„ธํฌ์˜ ์ฆ์‹์— ๋ฏธ์น˜๋Š” ์˜ํ–ฅ์„ ์•Œ์•„๋ณด๋Š” ๊ฒƒ์ด๋‹ค. ๋˜ํ•œ, ์„ฑ์žฅ์ธ์ž๋“ค์˜ ์กฐํ•ฉ์ด ํ‘œํ”ผ์„ฑ์žฅ์ธ์ž ์ˆ˜์šฉ์ฒด์˜ ๋ฐœํ˜„์— ๋ฏธ์น˜๋Š” ์˜ํ–ฅ์„ ์•Œ์•„๋ณด๊ณ ์ž ํ•œ๋‹ค. ์‹คํ—˜๊ฒฐ๊ณผ T3์™€ EGF๋ฐ HB-EGF๋กœ ์ฒ˜๋ฆฌํ•œ ๊ฒฝ์šฐ, ์ตœ๋Œ€ ์ฆ์‹์„ ๋ณด์ด๋Š” ๋†๋„๊นŒ์ง€๋Š” ๋†๋„์— ๋น„๋ก€ํ•˜์—ฌ ์ฆ๊ฐ€ํ•˜์˜€๋‹ค. ์„ฌ์œ ๋ชจ์„ธํฌ์˜ ์ตœ๋Œ€ ์„ฑ์žฅ์„ ๋ณด์ด๋Š” T3์˜ ๋†๋„๋Š” 10 nM์ด์—ˆ์œผ๋ฉฐ, EGF๋Š” 10ng/ml, HB-EGF๋Š” 10 nM ์ด์—ˆ๋‹ค. ์ฃผ๋ชฉํ•  ๊ฒƒ์€ ํŠนํžˆ 10 nM์˜ HB-EGF๋ฅผ ์ฒ˜๋ฆฌํ•œ ๊ฒฝ์šฐ, ์น˜์ฃผ์ธ๋Œ€ ์„ฌ์œ ๋ชจ์„ธํฌ์˜ ์ฆ์‹์ด ๊ฐ€์žฅ ์ปธ๋‹ค. T3์™€ EGF๋ฐ HB-EGF์„ ์กฐํ•ฉํ•˜์—ฌ ์ฒ˜๋ฆฌํ•œ ๊ฒฝ์šฐ ํ•œ๊ฐ€์ง€ ์„ฑ์žฅ์ธ์ž๋งŒ์„ ์ฒ˜๋ฆฌํ–ˆ์„ ๋•Œ๋ณด๋‹ค ์„ธํฌ ์ฆ์‹์— ์žˆ์–ด์„œ ๋ณด๋‹ค ํšจ๊ณผ์ ์ด์—ˆ๋‹ค. ํŠนํžˆ T3์™€ HB-EGF์˜ ์กฐํ•ฉ์€ ์„ฌ์œ ๋ชจ์„ธํฌ ์ฆ์‹์„ ์œ ์˜ํ•˜๊ฒŒ ํ–ฅ์ƒ์‹œ์ผฐ๋‹ค. RT-PCR (reverse transcriptase polymer chain reaction)๋กœ ํ‘œํ”ผ์„ฑ์žฅ์ธ์ž ์ˆ˜์šฉ์ฒด(EGFR)์˜ ๋ฐœํ˜„์œจ์„ ๊ด€์ฐฐํ•œ ๊ฒฐ๊ณผ, T3๊ฐ€ EGFR์˜ ๋ฐœํ˜„์„ ์ฆ๊ฐ€์‹œํ‚ด์„ ์•Œ ์ˆ˜ ์žˆ์—ˆ๋‹ค. ๋”ฐ๋ผ์„œ T3์˜ ํ‘œํ”ผ์„ฑ์žฅ์ธ์ž์— ๋Œ€ํ•œ ๋ฐœํ˜„ ์ฆ์‹ ์ž‘์šฉ๊ณผ ์ด์— ๊ฒฐํ•ฉํ•˜๋Š” HB-EGF์˜ ์ƒ์Šน์ž‘์šฉ์œผ๋กœ ์ด๋“ค์„ ์กฐํ•ฉํ•œ ๊ฒฝ์šฐ, ์„ธํฌ ์ฆ์‹์ด ์ฆ๊ฐ€๋˜์—ˆ์Œ์„ ์œ ์ถ”ํ•  ์ˆ˜ ์žˆ์—ˆ๋‹ค. ์ด๋ฒˆ ์—ฐ๊ตฌ๋ฅผ ํ†ตํ•ด HB-EGF๋ฅผ ๋‹จ๋… ์‚ฌ์šฉํ•œ ๊ฒฝ์šฐ์™€ T3์™€ HB-EGF๋ฅผ ์กฐํ•ฉํ•œ ๊ฒฝ์šฐ๊ฐ€ ํšจ๊ณผ์ ์œผ๋กœ ์„ฌ์œ ๋ชจ์„ธํฌ์˜ ์ฆ์‹์„ ํ–ฅ์ƒ์‹œํ‚ค๊ณ , ์™„์ „ํƒˆ๊ตฌ ๋œ ์น˜์•„์˜ ์ „ ์ฒ˜๋ฆฌ์ œ๋กœ์„œ ์œ ์šฉํ•˜๋‹ค๋Š” ๊ฒฐ๋ก ์„ ๋‚ด๋ฆด ์ˆ˜ ์žˆ์—ˆ๋‹ค. [์˜๋ฌธ]Viable cells of periodontal ligament would be an important factor for the successful replantation of an avulsed tooth. Therefore, it is critical to choose the storage medium for the preservation of traumatically avulsed teeth. Growth factors and hormones could be considered for the therapeutic application of the maintenance of viable periodontal ligament fibroblasts(PDLFs). The positive effects of tri-iodothyronine(T3), epidermal growth factor(EGF) and heparine-binding epidermal-like growth factor(HB-EGF) on other tissues have been studied previously. Therefore, T3, EGF and HB-EGF were examined to evaluate the therapeutic application on avulsed teeth. The cell proliferation of PDLFs was increased dose-dependently in the presence of T3, EGF and HB-EGF. Maximum cellular growth was shown at the concentration of 10 nM T3, 10 ng/ml EGF and 10 nM HB-EGF. Interestingly, HB-EGF showed maximum effect on the proliferation of PDLFs, and it was suggesting that HB-EGF might be a choice of candidate for a therapeutic application. Combined effects of these factors on the proliferation of PDLFs were also studied. Combination of T3, EGF and HB-EGF enhanced cellular growth than that of a single growth factor showing synergistic effect. Especially, combination of T3 and HB-EGF enhanced the proliferation of PDLFs with statistical significance. I studied the effect of T3 on endogenous EGF receptor using RT-PCR. The result was that T3 enhanced the expression of EGF receptors of PDLFs. From this study, it is suggested that HB-EGF or the combination of T3 and HB-EGF could be used as a pretreatment agent for traumatically avulsed teeth.ope
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