32 research outputs found

    (The) knowledge and attitude of medical students towards the organ donation

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    ๊ฑด๊ฐ•์ฆ์ง„๊ต์œกํ•™๊ณผ/์„์‚ฌ[ํ•œ๊ธ€] ๋ณธ ์—ฐ๊ตฌ๋Š” ์•ž์œผ๋กœ ์˜๋ฃŒ์ธ์ด ๋˜์–ด ๋‹ค์Œ ์„ธ๋Œ€์˜ ๋‡Œ์‚ฌ์ž ์žฅ๊ธฐ๊ธฐ์ฆ ๋ฐ ์žฅ๊ธฐ์ด์‹๊ณผ ๊ด€๋ จ๋œ ๊ฑด๊ฐ• ์ „๋ฌธ๊ฐ€๋กœ์„œ์˜ ์—ญํ• ์„ ๋‹ด๋‹นํ•˜๊ฒŒ ๋  ์˜๊ณผ๋Œ€ํ•™์ƒ๋“ค์˜ ๋‡Œ์‚ฌ์ž ์žฅ๊ธฐ๊ธฐ์ฆ์— ๋Œ€ํ•œ ์ง€์‹๊ณผ ํƒœ๋„๋ฅผ ์กฐ์‚ฌํ•˜๊ธฐ ์œ„ํ•ด ์‹œ๋„๋œ ์„œ์ˆ ์  ์กฐ์‚ฌ์—ฐ๊ตฌ๋กœ ๋‡Œ์‚ฌ์ž ์žฅ๊ธฐ๊ธฐ์ฆ์˜ ํ™œ์„ฑํ™”๋ฅผ ์œ„ํ•œ ์ „๋žต ๊ฐœ๋ฐœ์˜ ๊ธฐ์ดˆ ์ž๋ฃŒ๋ฅผ ์ œ๊ณตํ•˜๊ณ ์ž ์‹œ๋„๋˜์—ˆ๋‹ค. ๋ณธ ์—ฐ๊ตฌ์˜ ๋Œ€์ƒ์€ ์ „๊ตญ์— ์†Œ์žฌํ•œ 41๊ฐœ ์˜๊ณผ๋Œ€ํ•™ ์†Œ์† ํ•™์ƒ๋“ค ์ค‘ ์ž„์ƒ์‹ค์Šต๊ณผ์ •์„ ๋ชจ๋‘ ๋งˆ์นœ ๋ณธ๊ณผ 4ํ•™๋…„ ํ•™์ƒ 723๋ช…์ด์—ˆ์œผ๋ฉฐ, ์—ฐ๊ตฌ๋„๊ตฌ๋Š” ๋Œ€์ƒ์ž์˜ ํŠน์„ฑ์„ ๋ฌป๋Š” 11๋ฌธํ•ญ, ๋‡Œ์‚ฌ์ž ์žฅ๊ธฐ๊ธฐ์ฆ์— ๋Œ€ํ•œ ์ง€์‹์„ ๋ฌป๋Š” 16๋ฌธํ•ญ, ๋‡Œ์‚ฌ์ž ์žฅ๊ธฐ๊ธฐ์ฆ์— ๋Œ€ํ•œ ํƒœ๋„๋ฅผ ๋ฌป๋Š” 16๋ฌธํ•ญ์„ ํฌํ•จํ•œ ์ด 43๋ฌธํ•ญ์œผ๋กœ ๊ตฌ์„ฑํ•˜์—ฌ ์šฐํŽธ์œผ๋กœ ๋ฐฐํฌํ•˜์˜€์œผ๋ฉฐ ์ž๋ฃŒ์ˆ˜์ง‘๊ธฐ๊ฐ„์€ 2007๋…„ 10์›” 4์ผ๋ถ€ํ„ฐ 11์›” 7์ผ๊นŒ์ง€์˜€๋‹ค. ์ˆ˜์ง‘๋œ ์ž๋ฃŒ๋Š” SAS๋ฅผ ์ด์šฉํ•˜์—ฌ ๋นˆ๋„, ๋ฐฑ๋ถ„์œจ, ํ‰๊ท  ๋ฐ ํ‘œ์ค€ํŽธ์ฐจ, t-test, ANOVA(F-test)๋กœ ๋ถ„์„ํ•˜์˜€๊ณ , ๊ด€๋ จ์š”์ธ๋ถ„์„์€ multiple regression analysis, ์ƒ๊ด€๊ด€๊ณ„๋Š” Pearson Correlation๋ฅผ ์‹ค์‹œํ•˜์˜€๋‹ค.๋ณธ ์—ฐ๊ตฌ๋ฅผ ํ†ตํ•ด ์–ป์€ ๊ฒฐ๋ก ์€ ๋‹ค์Œ๊ณผ ๊ฐ™๋‹ค.1) ์˜๊ณผ๋Œ€ํ•™์ƒ๋“ค์˜ ๋‡Œ์‚ฌ์ž ์žฅ๊ธฐ๊ธฐ์ฆ์— ๋Œ€ํ•œ ์ง€์‹ ์ ์ˆ˜๋Š” 16์  ๋งŒ์ ์— ํ‰๊ท  8.11ยฑ2.4์ ์œผ๋กœ 58%์˜ ์ •๋‹ต๋ฅ ์„ ๋ณด์˜€๋‹ค. ๋Œ€์ƒ์ž์˜ 80%์ด์ƒ์ด ์ •๋‹ต์„ ๋งžํžŒ ๋ฌธํ•ญ์€ 1๊ฐœ๋กœ โ€˜์žฅ๊ธฐ๊ธฐ์ฆ ๋ฐ ์žฅ๊ธฐ์ด์‹ ๋Œ€๊ธฐ์ž์— ๋Œ€ํ•œ ๋ชจ๋“  ์ •๋ณด๋Š” ๊ตญ๊ฐ€(๊ตญ๋ฆฝ์žฅ๊ธฐ์ด์‹๊ด€๋ฆฌ์„ผํ„ฐ)์—์„œ ํ†ตํ•ฉ ๊ด€๋ฆฌํ•œ๋‹ค(81%)โ€™์ด์—ˆ์œผ๋ฉฐ ์ •๋‹ต๋ฅ ์ด 20%์ดํ•˜๋กœ ๋‚ฎ์€ ๋ฌธํ•ญ์€ โ€˜๋‡Œ์‚ฌ ์žฅ๊ธฐ๊ธฐ์ฆ์ž์˜ ์žฅ๋ก€๋น„๋Š” ์žฅ๊ธฐ์ด์‹์ž๊ฐ€ ๋ถ€๋‹ดํ•œ๋‹ค(19%)โ€™์™€ โ€˜์ž ์žฌ๋‡Œ์‚ฌ์ž๋ฅผ ์ง„๋‹จํ•œ ๋‹ด๋‹น์˜์‚ฌ๋Š” ๊ตญ๋ฆฝ์žฅ๊ธฐ์ด์‹๊ด€๋ฆฌ์„ผํ„ฐ์— ์‹ ๊ณ ํ•˜์—ฌ์•ผ ํ•œ๋‹ค(11%)โ€™์ด์—ˆ๋‹ค. ๋‡Œ์‚ฌ์ž ์žฅ๊ธฐ๊ธฐ์ฆ์— ๋Œ€ํ•œ ์ง€์‹์„ ๋ฒ”์ฃผ๋ณ„๋กœ ๊ตฌ๋ถ„ํ–ˆ์„ ๊ฒฝ์šฐ ๋‡Œ์‚ฌ์ž ์žฅ๊ธฐ๊ธฐ์ฆ์— ๋Œ€ํ•œ ์˜ํ•™์  ์ง€์‹์€ 3์  ๋งŒ์ ์— 1.5ยฑ0.79์ , ๋ฒ•๋ฅ ์  ์ง€์‹์€ 9์  ๋งŒ์ ์— 5.0ยฑ1.79์ , ๋‡Œ์‚ฌํŒ์ •์ ˆ์ฐจ์— ๋Œ€ํ•œ ์ง€์‹์€ 4์  ๋งŒ์ ์— 1.7ยฑ0.89์  ์ด์—ˆ๋‹ค.2) ์˜๊ณผ๋Œ€ํ•™์ƒ๋“ค์˜ ๋‡Œ์‚ฌ์ž ์žฅ๊ธฐ๊ธฐ์ฆ์— ๋Œ€ํ•œ ํƒœ๋„ ์ ์ˆ˜๋Š” 5์  ๋งŒ์ ์— ํ‰๊ท  3.40ยฑ0.49์ ์œผ๋กœ ์ค‘๊ฐ„ ์ •๋„๋กœ ๋‚˜ํƒ€๋‚ฌ์œผ๋ฉฐ ๋Œ€์ฒด๋กœ ๊ธ์ •์ ์ธ ํƒœ๋„๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค. ๋Œ€์ƒ์ž๋“ค์€ โ€˜๋‚ด๊ฐ€ ๋งŒ์•ฝ ์žฅ๊ธฐ๋ฅผ ๊ธฐ์ฆํ•œ๋‹ค๋ฉด ํƒ€์ธ์—๊ฒŒ ์„ ์„ ํ–‰ํ•œ ๊ฒƒ์ด๋‹ค(91%)โ€™์™€ โ€˜๋‚˜๋Š” ๋‡Œ์‚ฌ์ž์˜ ์žฅ๊ธฐ๊ธฐ์ฆ ๋ฐ ์ด์‹์ด ์˜ํ•™์ ์œผ๋กœ ๋ฐ”๋žŒ์งํ•œ ์ˆ˜์ˆ ์ด๋ผ๊ณ  ์ƒ๊ฐํ•œ๋‹ค(86%)โ€™ ๋ฌธํ•ญ์— ๋Œ€ํ•ด 80%์ด์ƒ ๊ธ์ •์ ์œผ๋กœ ์ƒ๊ฐํ•˜์˜€๊ณ , โ€˜์‚ฌ๋žŒ์˜ ์ฃฝ์Œ์„ ์‚ฌ๋žŒ์ด ํŒ๋‹จํ•˜๋Š” ๊ฒƒ์€ ์‹ค์ˆ˜์˜ ์—ฌ์ง€๊ฐ€ ์žˆ๋‹ค(73%)โ€™, โ€˜ํ™˜์ž์˜ ๊ฐ€์กฑ์ด ๊ธฐ์ฆ์š”์ฒญ์„ ๋ฐ›๋Š”๋‹ค๋ฉด ์˜๋ฃŒ์ง„์—๊ฒŒ ์ ๋Œ€์ ์ธ ๊ฐ์ •์„ ํ‘œํ˜„ํ•  ๊ฒƒ์ด๋‹ค(53%)โ€™์ˆœ์œผ๋กœ 50%์ด์ƒ ๋ถ€์ •์ ์ธ ํƒœ๋„๋ฅผ ๋ณด์˜€๋‹ค.3) ๋Œ€์ƒ์ž์˜ ์ผ๋ฐ˜์  ํŠน์„ฑ์— ๋”ฐ๋ฅธ ๋‡Œ์‚ฌ์ž ์žฅ๊ธฐ๊ธฐ์ฆ์— ๋Œ€ํ•œ ์ง€์‹ ๋ฐ ํƒœ๋„ ์ •๋„๋Š” ์„ฑ๋ณ„, ์˜๊ณผ๋Œ€ํ•™๋ณ‘์›์˜ ๊ถŒ์—ญ๋ณ„์— ๋”ฐ๋ผ ์œ ์˜ํ•œ ์ฐจ์ด๋ฅผ ๋‚˜ํƒ€๋‚ด์—ˆ๋‹ค. ๋˜ํ•œ ๋‡Œ์‚ฌ์ž ์žฅ๊ธฐ๊ธฐ์ฆ ๊ด€๋ จ ํŠน์„ฑ์— ๋”ฐ๋ฅธ ์ง€์‹ ์ •๋„๋Š” ๋‡Œ์‚ฌ์ž ์žฅ๊ธฐ๊ธฐ์ฆ์— ๋Œ€ํ•œ ์ •๋ณด ํš๋“ ๊ฒฝ๋กœ, ๋ณธ์ธ์˜ ์žฅ๊ธฐ๊ธฐ์ฆ ํฌ๋ง ์—ฌ๋ถ€, ์žฅ๊ธฐ๊ธฐ์ฆ ํฌ๋ง์นด๋“œ ์†Œ์ง€ ์—ฌ๋ถ€์— ๋”ฐ๋ผ ์ฐจ์ด๋ฅผ ๋ณด์˜€๊ณ , ํƒœ๋„์— ์žˆ์–ด์„œ๋Š” ๋‡Œ์‚ฌ์ž ์žฅ๊ธฐ๊ธฐ์ฆ์— ๋Œ€ํ•œ ์ •๋ณด ํš๋“ ๊ฒฝ๋กœ, ๋ณธ์ธ์˜ ์žฅ๊ธฐ๊ธฐ์ฆ ํฌ๋ง ์—ฌ๋ถ€์— ๋”ฐ๋ผ ์œ ์˜ํ•œ ์ฐจ์ด๋ฅผ ๋ณด์˜€๋‹ค.4) ๋Œ€์ƒ์ž ํŠน์„ฑ์— ๋”ฐ๋ฅธ ๋‡Œ์‚ฌ์ž ์žฅ๊ธฐ๊ธฐ์ฆ์— ๋Œ€ํ•œ ์š”์ธ๋ถ„์„ ๊ฒฐ๊ณผ ์ง€์‹์— ๋Œ€ํ•œ ์š”์ธ์œผ๋กœ ์˜๊ณผ๋Œ€ํ•™๋ณ‘์›์˜ ๊ถŒ์—ญ๋ณ„ ํŠน์„ฑ๊ณผ ๋‡Œ์‚ฌ๊ด€๋ จ ์ •๋ณด ํš๋“ ๊ฒฝ๋กœ ํŠน์„ฑ(์ „๋ฌธ์  ๊ฒฝ๋กœ)์ด ํ†ต๊ณ„์ ์œผ๋กœ ์œ ์˜ํ•œ ์š”์ธ์œผ๋กœ ํ™•์ธ๋˜์—ˆ๋‹ค. ๋˜ํ•œ ํƒœ๋„์— ๋Œ€ํ•œ ์š”์ธ๋ถ„์„ ๊ฒฐ๊ณผ ์˜๊ณผ๋Œ€ํ•™๋ณ‘์›์˜ ๊ถŒ์—ญ๋ณ„ ํŠน์„ฑ๊ณผ ๋ณธ์ธ์˜ ์žฅ๊ธฐ๊ธฐ์ฆ ํฌ๋ง ์—ฌ๋ถ€, ๋‡Œ์‚ฌ์ž ์žฅ๊ธฐ๊ธฐ์ฆ์— ๋Œ€ํ•œ ๋ฒ”์ฃผ๋ณ„ ์ง€์‹ ํŠน์„ฑ ์ค‘ ์˜ํ•™์  ์ง€์‹๊ณผ ๋‡Œ์‚ฌํŒ์ •์ ˆ์ฐจ์— ๋Œ€ํ•œ ์ง€์‹์ด ํ†ต๊ณ„์ ์œผ๋กœ ์œ ์˜ํ•œ ์š”์ธ์œผ๋กœ ํ™•์ธ๋˜์—ˆ๋‹ค.5) ๋Œ€์ƒ์ž์˜ ๋‡Œ์‚ฌ์ž ์žฅ๊ธฐ๊ธฐ์ฆ์— ๋Œ€ํ•œ ์ „๋ฐ˜์ ์ธ ์ง€์‹๊ณผ ํƒœ๋„์˜ ์ƒ๊ด€๊ด€๊ณ„๋Š” ํ†ต๊ณ„์ ์œผ๋กœ ์œ ์˜ํ•˜์ง€ ๋ชปํ•œ ๋ฐ˜๋ฉด(r=0.055, p=0.142), ๋ฒ”์ฃผ๋ณ„ ์ง€์‹์— ์žˆ์–ด์„œ ์˜ํ•™์  ์ง€์‹(r=0.135, p=0.001)๊ณผ ๋‡Œ์‚ฌํŒ์ •์ ˆ์ฐจ์— ๋Œ€ํ•œ ์ง€์‹(r=-0.075, p=0.043)์— ๋Œ€ํ•ด์„œ๋Š” ํ†ต๊ณ„์ ์œผ๋กœ ์œ ์˜ํ•˜์˜€๋‹ค.๊ฒฐ๋ก ์ ์œผ๋กœ ์˜๊ณผ๋Œ€ํ•™์ƒ๋“ค์˜ ๋‡Œ์‚ฌ์ž ์žฅ๊ธฐ๊ธฐ์ฆ์— ๋Œ€ํ•œ ์ •ํ™•ํ•œ ์ง€์‹์€ ๋Œ€์ฒด๋กœ ๋‚ฎ์€ ๋น„์œจ๋กœ ์กฐ์‚ฌ๋˜์–ด ์ด์— ๋Œ€ํ•œ ์ •ํ™•ํ•œ ์ง€์‹์ „๋‹ฌ์„ ์œ„ํ•œ ๊ต์œก๊ณผ ํ™๋ณด๊ฐ€ ํ•„์š”ํ•˜๋‹ค. ์ด์— ๋Œ€ํ•œ ๋Œ€์ฑ…์œผ๋กœ๋Š” ํ•™๊ณผํŠน์„ฑ์„ ๊ณ ๋ คํ•˜์—ฌ ๋‡Œ์‚ฌ์ž ์žฅ๊ธฐ๊ธฐ์ฆ์— ๋Œ€ํ•œ ์ •๋ณด ํš๋“์˜ ๊ฒฝ๋กœ๋ฅผ ์ „๋ฌธ์  ๊ฒฝ๋กœ์ธ ์˜๋Œ€๊ต์œก๊ณผ์ •์— ๊ด€๋ จ๊ต์œก๋‚ด์šฉ ๋ณด์ถฉ, ์‹ค์Šต ํ”„๋กœ๊ทธ๋žจ ๋งˆ๋ จ ๋“ฑ์ด ํšจ๊ณผ์ ์ผ ๊ฒƒ์œผ๋กœ ์˜ˆ์ธก ๋œ๋‹ค. ๋˜ํ•œ ์ด๋Ÿฌํ•œ ๊ณผ์ •์„ ํ†ตํ•ด ๋ฏธ๋ž˜์˜ ์˜๋ฃŒ์ธ์ธ ์˜๊ณผ๋Œ€ํ•™์ƒ๋“ค์ด ๋‡Œ์‚ฌ์ž ์žฅ๊ธฐ๊ธฐ์ฆ์˜ ํ•„์š”์„ฑ๊ณผ ๊ณผ์ •, ์—ญํ• ์„ ์ดํ•ดํ•˜๊ณ  ๊ฐœ์ธ์ ์ธ ์‹ ๋…์„ ํ™•๊ณ ํžˆ ํ•˜๋ฉฐ ๋‚˜์•„๊ฐ€ ์žฅ๊ธฐ๊ธฐ์ฆ์— ๋Œ€ํ•œ ๊ธ์ •์ ์ธ ํƒœ๋„๋ฅผ ๊ณ ์ทจ์‹œํ‚ฌ ์ˆ˜ ์žˆ์„ ๊ฒƒ์ด๋ฉฐ ์ด๋ฅผ ํ†ตํ•ด ์žฅ๊ธฐ๊ธฐ์ฆ ํ™œ์„ฑํ™”์— ๊ธฐ์—ฌํ•  ์ˆ˜ ์žˆ์„ ๊ฒƒ์ด๋‹ค. [์˜๋ฌธ]This research was intended to study on the knowledge and attitude of the medical students towards the organ donation in brain death, who will be in charge of organ donation and transplantation as health specialists in the future. It was descriptive survey research to provide the basic information for the development of strategy to activate organ donation in brain death. In the study, the data had been collected from 723 medical students who have finished clinical practice courses in 41 medical schools in Korea. The method of the study was the questionnaires consisting of 43 questions including 11 questions of general features, 16 questions of the knowledge about organ donation in brain death and 16 questions of the attitude to the organ donation. The data was collected from the 4th of October in 2007 to the 7th of November in 2007. The collected data was analyzed for the frequency, percentage, t-test and ANOVA(F-test) by SAS program, for relating factor by multiple regression analysis and for correlation by Pearson Correlation.The results were as follows1) The score of the knowledge of medical students about organ donation in brain death was on the average 8.11ยฑ2.4 of 16, that is, 58%. The item that over 80% of respondents chose the right answer was the only one question, that is, โ€˜The government(KONOS; Korean Network for Organ Sharing) should manage organ donation and all the information of recipients for transplantation(81%)โ€™, and the items below 20% were that โ€˜Recipients should pay all the money for donor's funeral service(19%)โ€™ and โ€˜The doctor diagnosed potential brain death should report to Korean Network for Organ Sharing(11%)โ€™. When the researcher classified the subjects' knowledge about organ donation in brain death, the results showed 1.5ยฑ0.79 of 3 in medical knowledge, 5.ยฑ1.79 of 9 in legal knowledge and 1.7ยฑ0.89 of 4 in decision processing of brain death.2) In the analysis of attitude of medical students to the organ donation in brain death, the average score was 3.40ยฑ0.49 of 5, which seemed they were relatively optimistic. Over 80% of respondents answered positively in two questions, those are, โ€˜If I donated organs, I would do good to other people(91%)โ€™ and โ€˜I agree the organ donation in brain death and transplantation are desirable medical treatments(86%)โ€™, In contrary, it showed that over 50% had a pessimistic attitude to two questions, which are, โ€˜There might be a mistake to make a determination of person's death by human beings(73%)โ€™ and โ€˜If family were requested organ donation, they would express their hostility to the medical staff(53%)โ€™3) There were significant differences in the knowledge and attitude to the organ donation in brain death in gender and the location of university hospital. Another difference was caused by the ways to gain the information of it, and whether one accepts to organ donation or have the donor card or not. In the case of attitude, there were notable differences according to the ways to obtain information of the organ donation and whether one accepts organ donation.4) In the analysis of the knowledge of general features, the important factors were confirmed statistically by the location of university hospital and the way to get the information for organ donation. And in the attitude, the medical knowledge and the progress of brain death were more meaningful among other factors statistically.5) The correlation between the knowledge and attitude of respondents about organ donation in brain death was not valuable statistically(r=0.055, p=0.142), on the other hand, in the medical knowledge(r=0.135, p=0.001) and the knowledge about progress of brain death(r=-0.075, p=0.043), were valuable statistically.In conclusion, this research showed that the knowledge of medical students about organ donation in brain death was pretty low. That is why education and public relations were needed for improving their knowledge. For the strategy, they should be added to the medical college curriculum and clinical practice program about organ donation. In addition, medical students would recognize the importance, progress and the role of organ donation in brain death through this program. Eventually, they would have positive attitude about the organ donation and contribute to expand it.ope

    Regulation of NHE3 (Na+/H+ exchanger 3) expression in the luminal membrane of the pancreatic duct.

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    ์˜๊ณผํ•™์‚ฌ์—…๋‹จ/์„์‚ฌ[ํ•œ๊ธ€] ์ค‘ํƒ„์‚ฐ์—ผ (bicarbonate, HCOโ‚ƒ^-)์€ ์ทŒ์•ก๊ณผ ํ˜ธํก๊ธฐ ์ ์•ก์˜ ์‚ฐ๋„ ๋ฐ ์ ๋„๋ฅผ ์œ ์ง€ํ•˜๋Š”๋ฐ ์žˆ์–ด ์ค‘์š”ํ•œ ์—ญํ• ์„ ํ•˜๋Š” ์„ฑ๋ถ„์œผ๋กœ, HCOโ‚ƒ^- ์ˆ˜์†ก ์ด์ƒ์€ ๋งŒ์„ฑ์ทŒ์žฅ์—ผ, ๋งŒ์„ฑํ์‡„์„ฑํ์งˆํ™˜ ๋“ฑ๊ณผ ๊ด€๋ จ๋˜์–ด ์žˆ๋‹ค. ์ทŒ์žฅ ๋‚ด๊ฐ•์œผ๋กœ์˜ HCOโ‚ƒ^- ๋ถ„๋น„์—๋Š” CFTR (cystic fibrosis transmembrane conductance regulator), ์Œ์ด์˜จ ๊ตํ™˜๊ธฐ (AE, Cl-/ HCOโ‚ƒ^- exchanger), ๊ทธ๋ฆฌ๊ณ  NHE3 (Na^+/H^+ exchanger 3) ์ด์˜จ์ˆ˜์†ก๋‹จ๋ฐฑ์ด ๊ด€์—ฌํ•œ๋‹ค. CFTR์€ HCOโ‚ƒ^-๋ฅผ ๋ถ„๋น„ํ•˜๋Š” AE ๊ธฐ๋Šฅ์„ ์ด‰์ง„ํ•˜๊ณ  HCOโ‚ƒ^-๋ฅผ ํก์ˆ˜ํ•˜๋Š” NHE3 ๊ธฐ๋Šฅ์„ ์กฐ์ ˆํ•จ์œผ๋กœ ๋‚ด๊ฐ•๋ง‰์—์„œ์˜ HCOโ‚ƒ^- ์ˆ˜์†ก์— ์ค‘์‹ฌ ์—ญํ• ์„ ํ•˜๊ณ  ์žˆ๋‹ค. ๋ณธ ์—ฐ๊ตฌ์‹ค์€ ์„ ํ–‰ ์‹คํ—˜์„ ํ†ตํ•˜์—ฌ CFTR๊ณผ NHE3๊ฐ€ PDZ (PSD 95/DLG/ZO1) domain์„ ๊ฐ–๋Š” ์—ฐ๊ฒฐ๋‹จ๋ฐฑ์„ ํ†ตํ•˜์—ฌ ์ƒํ˜ธ์ž‘์šฉ์„ ํ•˜๊ณ  ์žˆ์œผ๋ฉฐ, ํŠนํžˆ CFTR์ด ์กด์žฌํ•  ๊ฒฝ์šฐ NHE3์˜ ์ƒํ”ผ ๋‚ด๊ฐ•๋ง‰ ๋ฐœํ˜„์ด ์ฆ๊ฐ€ํ•˜๋Š” ๊ฒƒ์„ ๋ฐœ๊ฒฌํ•˜์˜€๋‹ค. ๊ทธ๋Ÿฌ๋‚˜ ๊ทธ ๋ฐœํ˜„์˜ ์ฆ๊ฐ€ ๊ธฐ์ „์— ๋Œ€ํ•˜์—ฌ๋Š” ์•„์ง ๋ณด๊ณ ๋œ ๋ฐ” ์—†๋‹ค. ๋ณธ ์—ฐ๊ตฌ์—์„œ๋Š” ์œ ์ „์  ์†์ƒ์œผ๋กœ CFTR์„ ๋ฐœํ˜„ํ•˜์ง€ ๋ชปํ•˜๋Š” CFPAC ์ƒํ”ผ์„ธํฌ์— CFTR์„ ๊ฐ–๊ณ  ์žˆ๋Š” adenoviral vector (AdCFTR)๋ฅผ transfection ํ•˜์—ฌ CFTR์ด ์–ด๋– ํ•œ ๊ธฐ์ „์„ ํ†ต ํ•˜์—ฌ NHE3 ๋‹จ๋ฐฑ ๋ฐœํ˜„์„ ์กฐ์ ˆํ•˜๋Š”์ง€ ๋ฐํžˆ๊ณ ์ž ํ•˜์˜€๋‹ค. RT-PCR์„ ์ˆ˜ํ–‰ํ•œ ๊ฒฐ๊ณผ CFTR๊ณผ ์ƒํ˜ธ์ž‘์šฉ์„ ํ•œ๋‹ค๊ณ  ์•Œ๋ ค์ง„ ์—ฐ๊ฒฐ๋‹จ๋ฐฑ์ธ EBP50 (ERM-binding phophoprotein 50), E3KARP (NHE3 Kinase A Regulatory Protein), CAP70 (CFTR Associated Protein 70)์ด CFPAC ์„ธํฌ์— ์กด์žฌํ•จ์„ ์•Œ ์ˆ˜ ์žˆ์—ˆ๋‹ค. ์ƒํ”ผ์„ธํฌ ๊ทน์„ฑ์„ ์œ ์ง€์‹œํ‚ฌ ์ˆ˜ ์žˆ๋Š” ํˆฌ๊ณผ์„ฑ ๋ง‰ (permeable membrane support)์— ์„ธํฌ๋ฅผ ๋ฐฐ์–‘ํ•œ ํ›„ ์„ธํฌ ๋‚ด pH๋ฅผ ์žฌ๋Š” ์‹คํ—˜์„ ํ†ตํ•˜์—ฌ ๋‚ด๊ฐ•๋ง‰์— ์กด์žฌํ•˜๋Š” NHE3 ํ™œ์„ฑ์„ ์ธก์ •ํ•œ ๊ฒฐ๊ณผ CFTR์ด ์กด์žฌํ•  ๊ฒฝ์šฐ ๊ทธ ํ™œ์„ฑ์ด ์•ฝ 39% ์ฆ๊ฐ€ํ•จ์„ ์•Œ ์ˆ˜ ์žˆ์—ˆ๊ณ , ์ด ๊ฒฐ๊ณผ๋Š” ์ด์ „ ์ƒ์ฒด ๋‚ด (in vivo) ๊ฒฐ๊ณผ์™€ ์ผ์น˜ํ•˜์˜€๋‹ค. Northern blot์„ ์ˆ˜ํ–‰ํ•œ ๊ฒฐ๊ณผ CFTR์€ NHE3์˜ mRNA ๋ฐœํ˜„์— ์˜ํ–ฅ์„ ์ฃผ์ง€ ์•Š์•˜๋‹ค. ๊ทธ๋Ÿฌ๋‚˜ ๋ฉด์—ญํ˜•๊ด‘์—ผ์ƒ‰์„ ํ†ตํ•˜์—ฌ CFTR๊ณผ NHE3 ๋ฐœํ˜„ ์–‘์ƒ์„ ํ™•์ธํ•œ ๊ฒฐ๊ณผ CFTR์ด ๋ฐœํ˜„ํ•œ ์„ธํฌ์—์„œ NHE3์˜ ์ƒํ”ผ ๋‚ด๊ฐ•๋ง‰ ๋ฐœํ˜„์ด ์ฆ๊ฐ€ํ•œ ๊ฒƒ์„ ์•Œ ์ˆ˜ ์žˆ์—ˆ๋‹ค. ์ด์ƒ์˜ ๊ฒฐ๊ณผ CFTR์€ mRNA ์ˆ˜์ค€์ด ์•„๋‹Œ ๋‹จ๋ฐฑ ๋ฐœํ˜„ ์ˆ˜์ค€์—์„œ NHE3๋ฅผ ์กฐ์ ˆํ•จ์„ ์•Œ ์ˆ˜ ์žˆ์—ˆ๋‹ค. CFTR์€ NHE3์™€ ๋‹จ๋ฐฑ ๋ณตํ•ฉ์ฒด๋ฅผ ํ˜•์„ฑํ•จ์œผ๋กœ์„œ ๋‚ด๊ฐ•๋ง‰์œผ๋กœ NHE3์˜ ์ด๋™์„ ์ฆ๊ฐ€์‹œํ‚ค๊ฑฐ๋‚˜ NHE3์˜ ์•ˆ์ •์„ฑ์„ ์ฆ๊ฐ€์‹œ์ผœ NHE3์˜ ์ƒํ”ผ ๋‚ด๊ฐ•๋ง‰ ๋ฐœํ˜„์„ ์ฆ๊ฐ€์‹œํ‚ฌ ๊ฒƒ์œผ๋กœ ์ƒ๊ฐ๋œ๋‹ค. -------------------- ํ•ต์‹ฌ๋˜๋Š” ๋ง : Na^+/H^+ exchanger 3, bicarbonate, CFTR, protein interaction [์˜๋ฌธ] HCO3- is an important constituent of secreted fluids in maintaining the acidity and fluidity of pancreatic fluid. Therefore aberrant HCO3- transport can be related to chronic pancreatitis and other diseases of pancreas. Several transporters are involved in luminal HCO3- secretion in pancreas such as CFTR (cystic fibrosis transmembrane conductance regulator), AE (Cl-/HCO3- exchanger), and NHE3 (Na+/H+ exchanger 3). CFTR supports AE activity and can also control HCO3- salvage mechanism NHE3. These findings mean that CFTR controls overall HCO3- homeostasis. It is reported that CFTR interacts with NHE3 through the scaffolding proteins having PDZ (PSD 95/DLG/ZO1) domain and increases expression of NHE3 in the luminal membrane of the pancreatic duct. However, the precise mechanism is still not clear. In the present study the underlying molecular mechanisms how CFTR regulates the expression of NHE3 were investigated. The role of CFTR was observed in CFTR-impaired CFPAC cells transfected with AdCFTR viruses. RT-PCR analysis revealed expression of mRNA for EBP50 (ERM-binding phophoprotein 50), E3KAP (NHE3 Kinase A Regulatory Protein), and CAP70 (CFTR Associated Protein 70) in CFPAC cells which are known to interact with CFTR. In order to maintain the epithelial polarity, the cells were cultured on a permeable membrane support, then NHE3 activity was measured by recording pHi in response to [Na+] changes. When the cells were transfected with CFTR, the luminal NHE3 activity was increased by about 39%, which was coincided with the previous in vivo results. Northern blotting revealed that CFTR did not affect the mRNA levels of NHE3. However, double-stained immunofluorescence study clearly showed that the luminal expression of CFTR was highly correlated with increased luminal NHE3 expression. These results suggest that CFTR increases the luminal NHE3 expression possibly by either increasing the luminal sorting or protein stability of NHE3 in the luminal membrane.ope

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