7 research outputs found

    (A) study on determining the minimum distance between near-side bus stop and signalized intersection considering cut-in lane changing

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    ํ•™์œ„๋…ผ๋ฌธ(์„์‚ฌ) --์„œ์šธ๋Œ€ํ•™๊ต ๋Œ€ํ•™์› :๊ฑด์„คํ™˜๊ฒฝ๊ณตํ•™๋ถ€, 2009.8.Maste

    Relationship between grade/stage and liver iron deposition in chronic B viral hepatitis

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    ์˜ํ•™๊ณผ/์„์‚ฌ[ํ•œ๊ธ€] Bํ˜• ๊ฐ„์—ผ ๋ฐ”์ด๋Ÿฌ์Šค๋Š” ๊ฐ์—ผ ํ›„ ๋‹ค์–‘ํ•œ ์ž„์ƒ๊ฒฝ๊ณผ๋ฅผ ๋‚˜ํƒ€๋‚ด๋ฉฐ, ๋งŒ์„ฑ Bํ˜• ๋ฐ”์ด๋Ÿฌ์Šค์„ฑ ๊ฐ„์—ผ์œผ๋กœ ์ง„ํ–‰๋œ ํ™˜์ž์—์„œ ๋งŒ์„ฑ์œผ๋กœ ์ง„ํ–‰ํ•˜์ง€ ์•Š์€ ํ™˜์ž์— ๋น„ํ•˜์—ฌ ํ˜ˆ์ค‘ ์ฒ  ๋†๋„๊ฐ€ ๋†’๋‹ค. ๋˜ํ•œ ์ฒ ์˜ ๊ณผ๋ถ€ํ•˜๋ฅผ ์œ ๋ฐœ์‹œํ‚ค๋Š” ์›์ธ์ด ์—†๋Š” ๊ฒฝ์šฐ์—๋„ ๋งŒ์„ฑ Bํ˜• ๋ฐ”์ด๋Ÿฌ์Šค์„ฑ ๊ฐ„์—ผ์—์„œ ์ข…์ข… ์ฒ  ์นจ์ฐฉ์ด ๊ด€์ฐฐ๋˜๋ฉฐ, ์ด์™€ ๊ฐ™์€ ์ฒ  ์นจ์ฐฉ์€ ๊ฐ„๋‚ด ๋ชจ๋“  ๋ถ€์œ„์—์„œ ๊ฐ€๋Šฅํ•˜์ง€๋งŒ ๋Œ€๋ถ€๋ถ„ ๋ฌธ๋งฅ ๋‚ดํ”ผ์„ธํฌ์— ์ƒ๊ธด๋‹ค. ๋งŒ์„ฑ ๋ฐ”์ด๋Ÿฌ์Šค์„ฑ ๊ฐ„์—ผ ํ™˜์ž์—์„œ ์ธํ„ฐํŽ˜๋ก  ์น˜๋ฃŒ์— ๋Œ€ํ•œ ๋ฐ˜์‘๊ณผ ํ˜ˆ์ค‘ ์ฒ  ๋†๋„ ๋ฐ ๋ฌธ๋งฅ์—ญ๋‚ด ์ฒ  ์นจ์ฐฉ ์ •๋„๋Š” ๋ฐ€์ ‘ํ•œ ์—ญ์ƒ๊ด€๊ด€๊ณ„๊ฐ€ ์žˆ์–ด, ํ˜ˆ์ค‘ ์ฒ  ๋†๋„ ๋ฐ ๋ฌธ๋งฅ์—ญ๋‚ด ์ฒ  ์นจ์ฐฉ์„ ๊ด€์ฐฐํ•จ์œผ๋กœ์จ ์ธํ„ฐํŽ˜๋ก  ์น˜๋ฃŒ ๋ฐ˜์‘์— ๋Œ€ํ•œ ์˜ˆ์ธก์ด ๊ฐ€๋Šฅํ•˜๋‹ค. ์šฐ๋ฆฌ๋‚˜๋ผ์—์„œ ๋งŒ์„ฑ Bํ˜• ๋ฐ”์ด๋Ÿฌ์Šค์„ฑ ๊ฐ„์—ผ์˜ ์œ ๋ณ‘๋ฅ ์ด ๋†’๊ณ  ์ธํ„ฐํŽ˜๋ก  ์น˜๋ฃŒ๊ฐ€ ํ”ํžˆ ์‚ฌ์šฉ๋˜์ง€๋งŒ ํ˜„์žฌ๊นŒ์ง€ ๊ตญ๋‚ด์—์„œ๋Š” ๋งŒ์„ฑ Bํ˜• ๋ฐ”์ด๋Ÿฌ์Šค์„ฑ ๊ฐ„์—ผ ํ™˜์ž์—์„œ ๊ฐ„๋‚ด ์ฒ  ๋†๋„์— ๋Œ€ํ•œ ์—ฐ๊ตฌ๊ฐ€ ์—†์—ˆ๋‹ค. ์ด์— ๋ณธ ์—ฐ๊ตฌ๋Š” ๋งŒ์„ฑ Bํ˜• ๋ฐ”์ด๋Ÿฌ์Šค์„ฑ ๊ฐ„์—ผ ํ™˜์ž์˜ ๊ฐ„๋ฌธ๋งฅ์—ญ๋‚ด ์ฒ  ์นจ์ฐฉ ์—ฌ๋ถ€๊ฐ€ ์ธํ„ฐํŽ˜๋ก  ํˆฌ์—ฌ ํ›„ ์น˜๋ฃŒ ํšจ๊ณผ๋ฅผ ์˜ˆ์ธกํ•˜๋Š”๋ฐ ๋„์›€์ด ๋˜๋Š”์ง€ ์•Œ๊ธฐ ์œ„ํ•œ ๊ธฐ์ดˆ์  ์—ฐ๊ตฌ๋กœ์จ ๋งŒ์„ฑ Bํ˜• ๊ฐ„์—ผ ํ™˜์ž์—์„œ ๊ฐ„์˜ ๋ฌธ๋งฅ์—ญ๋‚ด ์ฒ  ์นจ์ฐฉ์„ ๊ด€์ฐฐํ•˜์˜€๋‹ค. ๊ทธ๋ฆฌ๊ณ , ๋งŒ์„ฑ ๊ฐ„์—ผ์˜ ๋“ฑ๊ธ‰ ๋ฐ ์ง„ํ–‰์ •๋„์— ๋Œ€ํ•˜์—ฌ ๊ด€์ฐฐํ•จ์œผ๋กœ์จ ๋ฌธ๋งฅ์—ญ๋‚ด ์ฒ  ์นจ์ฐฉ๊ณผ ๊ฐ„์—ผ์˜ ๋“ฑ๊ธ‰ ๋ฐ ์ง„ํ–‰์ •๋„ ์ƒํ˜ธ๊ฐ„์— ์–ด๋– ํ•œ ๊ด€๊ณ„๊ฐ€ ์žˆ๋Š”์ง€๋ฅผ ์•Œ์•„๋ณด๊ณ ์ž ํ•˜์˜€๋‹ค. ๋ณธ ์—ฐ๊ตฌ๋Š” ๋ณต๊ฐ•๊ฒฝ ์ง์‹œํ•˜ ๊ฐ„์กฐ์ง ๊ฒ€์‚ฌ๋ฅผ ์‹œํ–‰ํ•œ ๋งŒ์„ฑ Bํ˜• ๋ฐ”์ด๋Ÿฌ์Šค์„ฑ ๊ฐ„์—ผ ํ™˜์ž 37์˜ˆ์™€ ๋น„๋ฐ”์ด๋Ÿฌ์Šค์„ฑ ๋งŒ์„ฑ ๊ฐ„์งˆํ™˜ 20์˜ˆ์˜ ๊ฐ„ ์กฐ์ง์ƒ๊ฒ€์œผ๋กœ ๋งŒ์„ฑ ๊ฐ„์—ผ์˜ ๋“ฑ๊ธ‰ ๋ฐ ์ง„ํ–‰์ •๋„ ๊ทธ๋ฆฌ๊ณ  ๊ฐ„๋ฌธ๋งฅ์—ญ๋‚ด ๋‚ดํ”ผ์„ธํฌ์™€ ์กฐ์ง๊ตฌ์— ์นจ์ฐฉ๋œ ํ—ค๋ชจ์‹œ๋ฐ๋ฆฐ์„ ๊ด€์ฐฐํ•˜์˜€๊ณ  ๊ฐ„๊ธฐ๋Šฅ, ํ˜ˆ์ค‘ ์ฒ ๋†๋„ ๋“ฑ์„ ๊ฒ€์‚ฌํ•˜์˜€๋‹ค. ํ˜ˆ์ค‘ ์ฒ  ๋†๋„๋ฅผ ๊ฒ€์‚ฌํ•œ ๋งŒ์„ฑ Bํ˜• ๋ฐ”์ด๋Ÿฌ์Šค์„ฑ ๊ฐ„์—ผ 15์˜ˆ์™€ ๋น„๋ฐ”์ด๋Ÿฌ์Šค์„ฑ ๋งŒ์„ฑ ๊ฐ„์งˆํ™˜ 6์˜ˆ๋ฅผ ๋Œ€์ƒ์œผ๋กœ ๋น„๊ตํ•œ ์ด ์ฒ  ๊ฒฐํ•ฉ๋Šฅ์€ ํ†ต๊ณ„์ ์œผ๋กœ ์˜๋ฏธ์žˆ๊ฒŒ ๋งŒ์„ฑ Bํ˜• ๋ฐ”์ด๋Ÿฌ์Šค์„ฑ ๊ฐ„์—ผ ํ™˜์ž์—์„œ ๊ฐ์†Œ๋˜์–ด ์žˆ์—ˆ์œผ๋‚˜ (p-value < 0.05), ํ˜ˆ์žฅ ์ฒ , transferrin ํฌํ™”๋„, ํ˜ˆ์žฅ ferritin์€ ์–‘ ๊ตฐ๊ฐ„์— ์œ ์˜ํ•œ ์ฐจ์ด๊ฐ€ ์—†์—ˆ๋‹ค. ๋งŒ์„ฑ Bํ˜• ๋ฐ”์ด๋Ÿฌ์Šค์„ฑ ๊ฐ„์—ผ 37์˜ˆ ์ค‘ 13์˜ˆ(35%)์—์„œ ๋น„๋ฐ”์ด๋Ÿฌ์Šค์„ฑ ๋งŒ์„ฑ ๊ฐ„ ์งˆํ™˜์ž 20์˜ˆ ์ค‘ 1์˜ˆ(5%)์—์„œ ๋ฌธ๋งฅ์—ญ๋‚ด ํ—ค๋ชจ์‹œ๋ฐ๋ฆฐ ์นจ์ฐฉ์ด ๊ด€์ฐฐ๋˜์–ด ๋งŒ์„ฑ Bํ˜• ๋ฐ”์ด๋Ÿฌ์Šค์„ฑ ๊ฐ„์—ผ ํ™˜์ž์—์„œ ํ†ต๊ณ„์ ์œผ๋กœ ์œ ์˜ํ•˜๊ฒŒ ํ—ค๋ชจ์‹œ๋ฐ๋ฆฐ ์นจ์ฐฉ์ด ์ฆ๊ฐ€๋˜์–ด ์žˆ์—ˆ๋‹ค(p-value < 0.05). ๋งŒ์„ฑ Bํ˜• ๋ฐ”์ด๋Ÿฌ์Šค์„ฑ ๊ฐ„์—ผ ํ™˜์ž 37์˜ˆ ์ค‘์—์„œ ๋ฌธ๋งฅ์—ญ๋‚ด ํ—ค๋ชจ์‹œ๋ฐ๋ฆฐ์ด ์นจ์ฐฉ๋˜์–ด ์žˆ๋Š” 13์˜ˆ์—์„œ ์นจ์ฐฉ์ด ์—†์—ˆ๋˜ 24์˜ˆ์— ๋น„ํ•˜์—ฌ ํ†ต๊ณ„์ ์œผ๋กœ ์œ ์˜ํ•˜๊ฒŒ ๊ฐ„์—ผ์˜ ์ง„ํ–‰์ •๋„(p-value < 0.01) ๋ฐ ๋ฌธ๋งฅ/๋ฌธ๋งฅ์ฃผ๋ณ€๋ถ€ ํ™œ์„ฑ๋„(p-value < 0.05)์™€ ์œ ์˜ํ•œ ์ƒ๊ด€๊ด€๊ณ„๋ฅผ ๋ณด์ธ ๋ฐ˜๋ฉด, ํ˜œ๋ชจ์‹œ๋ฐ๋ฆฐ ์นจ์ฐฉ์ •๋„์™€ ๊ฐ„์†Œ์—ฝ ํ™œ์„ฑ๋„์™€๋Š” ์ƒ๊ด€๊ด€๊ณ„๊ฐ€ ์—†์—ˆ๋‹ค. ํ˜ˆ์ค‘ ์ฒ  ๋†๋„๋ฅผ ์ธก์ •ํ•œ ๋งŒ์„ฑ Bํ˜• ๋ฐ”์ด๋Ÿฌ์Šค์„ฑ ๊ฐ„์—ผ 15์˜ˆ์—์„œ ๋ฌธ๋งฅ์—ญ ํ—ค๋ชจ์‹œ๋ฐ๋ฆฐ ์นจ์ฐฉ ์—ฌ๋ถ€์— ๋”ฐ๋ฅธ ํ˜ˆ์ค‘ ์ฒ ๋†๋„์˜ ์ฐจ์ด๋Š” ์—†์—ˆ๋‹ค. ์ด์ƒ์˜ ๊ฒฐ๊ณผ๋กœ ๋งŒ์„ฑ Bํ˜• ๋ฐ”์ด๋Ÿฌ์Šค์„ฑ ๊ฐ„์—ผ์—์„œ ํ˜ˆ์ค‘ ์ฒ ๋†๋„๋Š” ๋Œ€์กฐ๊ตฐ์ธ ๋น„๋ฐ”์ด๋Ÿฌ์Šค์„ฑ ๋งŒ์„ฑ ๊ฐ„์งˆํ™˜๊ณผ ์ฐจ์ด๋ฅผ ๋ณด์ด์ง€ ์•Š์€ ๋ฐ˜๋ฉด, ๊ฐ„๋ฌธ๋งฅ๋‚ด ํ˜œ๋ชจ์‹œ๋ฐ๋ฆฐ ์นจ์ฐฉ์€ ๋Œ€์กฐ๊ตฐ์— ๋น„ํ•˜์—ฌ ์œ ์˜ํ•˜๊ฒŒ ์ฆ๊ฐ€๋˜์–ด ์žˆ์–ด, ์šฐ๋ฆฌ๋‚˜๋ผ์—์„œ๋„ ๋งŒ์„ฑ Bํ˜• ๋ฐ”์ด๋Ÿฌ์Šค์„ฑ ๊ฐ„์—ผ์—์„œ ๊ฐ„๋‚ด ์ฒ  ๋†๋„๋ฅผ ์ธํ„ฐํŽ˜๋ก  ์น˜๋ฃŒ์— ๋Œ€ํ•œ ์˜ˆํ›„ ์ธ์ž๋กœ ์ด์šฉํ•  ์ˆ˜ ์žˆ์„ ๊ฒƒ์œผ๋กœ ์ƒ๊ฐ๋˜๋ฉฐ, ๋ฌธ๋งฅ์—ญ๋‚ด ์ฒ  ์นจ์ฐฉ์ด ๊ด€์ฐฐ๋  ๋•Œ, ๋งŒ์„ฑ ๊ฐ„์—ผ์˜ ๋ฌธ๋งฅ/๋ฌธ๋งฅ์ฃผ๋ณ€๋ถ€ ํ™œ์„ฑ๋„์™€ ์ง„ํ–‰์ •๋„๊ฐ€ ์‹ฌํ•˜์˜€๋‹ค. ๋งŒ์„ฑ Bํ˜• ๋ฐ”์ด๋Ÿฌ์Šค์„ฑ ๊ฐ„์—ผ ํ™˜์ž์—์„œ ๋ฌธ๋งฅ์—ญ์— ์ฒ  ์นจ์ฐฉ์ด ๊ด€์ฐฐ๋  ๋•Œ, ๊ฐ„๊ฒฝ๋ณ€์œผ๋กœ์˜ ์ง„ํ–‰ํ•  ๊ฐ€๋Šฅ์„ฑ์ด ๋†’๋‹ค๋Š” ๊ฒƒ์„ ์•Œ ์ˆ˜ ์žˆ์œผ๋ฉฐ, ๋”ฐ๋ผ์„œ ์ด๋Ÿฌํ•œ ๊ฒฝ์šฐ์— ๊ฐ„๊ฒฝ๋ณ€์œผ๋กœ์˜ ์ดํ–‰๊ฐ€๋Šฅ์„ฑ์— ์œ ์˜ํ•˜์—ฌ ์ ๊ทน์ ์ธ ์ถ”์  ๊ด€์ฐฐ์ด ํ•„์š”ํ•  ๊ฒƒ์ด๋‹ค. ํ–ฅํ›„ ํ—ค๋ชจ์‹œ๋ฐ๋ฆฐ ์นจ์ฐฉ์— ์˜ํ•œ ๋ฌธ๋งฅ ๋‚ดํ”ผ์„ธํฌ์˜ ๋ฉด์—ญํ•™์  ์ƒ๋ฆฌ์  ๊ธฐ๋Šฅ์— ๋Œ€ํ•œ ์ข€ ๋” ๋งŽ์€ ์—ฐ๊ตฌ๋ฅผ ํ†ตํ•˜์—ฌ ๊ฐ„๋‚ด ์ฒ  ์นจ์ฐฉ์— ๋”ฐ๋ฅธ ๋งŒ์„ฑ Bํ˜• ๋ฐ”์ด๋Ÿฌ์Šค์„ฑ ๊ฐ„์—ผ์˜ ๋ณ‘ํƒœ ์ƒ๋ฆฌ๋ฅผ ํ™•์ธํ•  ์ˆ˜ ์žˆ์„ ๊ฒƒ์œผ๋กœ ์ƒ๊ฐ๋œ๋‹ค. [์˜๋ฌธ] Increased serum and hepatic iron may be observed in chronic viral hepatitis in the absence of recognized iron overload state. In chronic B viral hepatitis, hemosiderin deposition is mainly noted in the endothelial cells of portal tracts. Elevated iron stores in liver are predictive of a poor response to interferon. In Korea, although interferon therapy is commonly used, there are no reports on the distribution of hemosiderin in the liver with chronic B viral hepatitis. The serum iron status and deposition of hemosiderin in portal tracts were evaluated in patients with chronic B viral hepatitis as a basic study for interferon therapy. The relation between the serum iron status and hemosiderin deposition in the portal tracts with other histological features of chronic hepatitis was also evaluated. Liver biopsy specimens were obtained through the peritoneoscopy from 37 patients with chronic B viral hepatitis and 20 patients with non viral chronic hepatitis as control group. More than 10 portal tracts were available for histologic examination from 37 patients with chronic B viral hepatitis and non viral chronic hepatitis as control group. Total iron binding capacity (TIBC) was decreased in patients with chronic B viral hepatitis as compared with patients in control group(p-value < 0.05). Whereas, there were no difference of serum iron, ferritin and transferrin saturation between chronic hepatitis and non viral hepatitis. 13 of 37 cases (35%) of chronic hepatitis B and only 1 of 20 cases(5%) of non viral hepatitis showed hemosiderin deposition in the endothelial cells of portal tracts. The difference was statistically significant between chronic hepatitis and non viral hepatitis. In chronic B viral hepatitis, grade and porto-periportal activity were positively correlated with hemosiderin deposition (p-value < 0.05), but serum iron concentration was not correlated with hemosiderin deposition in portal tract. These findings suggest that iron deposition in portal tracts is useful in predicting the likelihood that chronic hepatitis B will also respond to interferon therapy in Korea as like other country. This hemosiderin deposition was positively correlated with the degree of porto-periportal activity and fibrosis in chronic B viral hepatitis. When there is iron deposition in endothelial cells of the portal tracts, close follow-up will be needed with awareness of possible progression to liver cirrhosis.restrictio
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