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    Factors influencing urinary mercury concentration in schoolchildren

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    ν™˜κ²½λ³΄κ±΄ν•™κ³Ό/석사[ν•œκΈ€] 저농도 μ€‘κΈˆμ†μ˜ 지속적인 λ…ΈμΆœμ€ 생체 λ‚΄μ—μ„œ 좕적이 되고 이둜 μΈν•΄μ„œ μ—¬λŸ¬ 건강 영ν–₯이 λ‚˜νƒ€λ‚˜κ²Œ λœλ‹€. μ€‘κΈˆμ† μ˜€μ—ΌμœΌλ‘œ μΈν•œ 인체 쀑독을 μ˜ˆλ°©ν•˜κΈ° μœ„ν•΄ μ—¬λŸ¬ λ‚˜λΌμ—μ„œλŠ” 주둜 μž‘μ—…ν™˜κ²½μ„ λŒ€μƒμœΌλ‘œ 생물학적 λͺ¨λ‹ˆν„°λ§μ„ ν•˜κ³  있으며, μ£Όμš” λͺ¨λ‹ˆν„°λ§ ν•­λͺ©μœΌλ‘œμ„œλŠ” 일반적으둜 ν˜ˆμ•‘ 및 μš”, λͺ¨λ°œ λ“±μ—μ„œμ˜ λ†λ„λ‘œμ„œ ν­λ‘œμ •λ„λ₯Ό ν‰κ°€ν•˜κ³  μžˆλ‹€. λ³Έ μ—°κ΅¬μ—μ„œλŠ” μ΄ˆλ“±ν•™μƒμ„ λŒ€μƒμœΌλ‘œ μš”μ€‘ μˆ˜μ€ 농도 뢄석과 섀문쑰사λ₯Ό 톡해 νŒŒμ•…λœ 영ν–₯μš”μΈλ“€μ— κ΄€ν•œ 뢄석을 ν†΅ν•˜μ—¬ μš”μ€‘ μˆ˜μ€ 농도와 μ–΄λ–€ μš”μΈλ“€μ΄ 관련이 있고, μ΄λŸ¬ν•œ 영ν–₯μš”μΈλ“€μ΄ μš”μ€‘ μˆ˜μ€ 농도에 μ–΄λŠ 정도 영ν–₯을 λ―ΈμΉ˜λŠ”μ§€λ₯Ό κ²€ν† ν•˜κ³ μž ν•œλ‹€.ν˜„μ§€μ‘°μ‚¬λŠ” 2003λ…„ 10μ›” 25일뢀터 11μ›” 22μΌκΉŒμ§€ 이루어 쑌으며, 총 272λͺ…μ˜ 아동을 λŒ€μƒμœΌλ‘œ 채뇨 및 μ„€λ¬Έ 쑰사λ₯Ό μ‹€μ‹œν•˜μ˜€λ‹€. μš”μ‹œλ£Œμ˜ μ±„μ·¨λŠ” 쑰사 당일 μΌμ‹œλ‡¨λ₯Ό μ±„μ·¨ν•˜μ˜€μœΌλ©°, μ„€λ¬Έμ‘°μ‚¬λ‘œλŠ” μš”μ€‘ μˆ˜μ€ 농도에 영ν–₯을 쀄 수 μžˆλŠ” μš”μΈλ“€λ‘œ 성별, μ—°λ Ή, μ‹ μž₯, 체쀑, 간접흑연 μ—¬λΆ€, μ‹μ΄μŠ΅κ΄€ 등을 μ‘°μ‚¬ν•˜μ˜€λ‹€. μš”μ€‘ μˆ˜μ€μ˜ 츑정은 μˆ˜μ†Œν™”λ¬Ό λ°œμƒμž₯치(hydride vapor generator, Shimadzu HVG-1, Japan)κ°€ λΆ€μ°©λœ μ›μžν‘κ΄‘κ΄‘λ„κ³„(Atomic Absorption Spectrophotometer, Shimadzu AAS-6800, Japan)λ₯Ό μ΄μš©ν•˜μ—¬ λΆ„μ„ν•˜μ˜€λ‹€. μš”μ€‘ μˆ˜μ€ 농도에 영ν–₯을 λ―ΈμΉ  수 μžˆλŠ” μš”μΈμœΌλ‘œ 고렀된 영ν–₯λ³€μˆ˜λŠ” μ—°λ Ή, μ‹ μž₯, 체쀑, μ‹ν’ˆμ„­μ·¨ λ“±μ΄μ—ˆλ‹€. 자료의 톡계뢄석은 SPSS ν”„λ‘œκ·Έλž¨μ„ μ΄μš©ν•˜μ—¬ λ‹€μ€‘νšŒκ·€λΆ„μ„μ„ μ‹€μ‹œν•˜μ˜€λ‹€.μš”μ€‘ μˆ˜μ€ λ†λ„λŠ” λŒ€μƒμž 전체 평균이 2.88㎍/g-creatinineμ΄μ—ˆμœΌλ©°, μ „μ²΄μ μœΌλ‘œ λΆ„ν¬μ˜ 꼬리뢀뢄이 였λ₯Έμͺ½μœΌλ‘œ 치우친 우ν–₯μ™œκ³‘ 뢄포λ₯Ό λ‚˜νƒ€λ‚΄μ—ˆμœΌλ©°, λŒ€λΆ€λΆ„μ΄ 일반적으둜 비직업성 폭둜자의 μš”μ€‘ μˆ˜μ€ λ†λ„λ‘œ μ•Œλ €μ§„ 5㎍/g-creatinine 미만으둜 λ‚˜νƒ€λ‚¬μœΌλ‚˜, μΌλΆ€μ—μ„œ 10㎍/g-creatinine을 μ΄ˆκ³Όν•˜λŠ” λ†λ„μˆ˜μ€€μ„ λ³΄μ˜€λ‹€.연ꡬ λŒ€μƒμžμ˜ μš”μ€‘ μˆ˜μ€ 농도와 영ν–₯μš”μΈκ°„μ˜ λ‹€μ€‘νšŒκ·€λΆ„μ„ κ²°κ³Ό, μš”μ€‘ μˆ˜μ€ 농도에 영ν–₯을 λ―ΈμΉ˜λŠ” μš”μΈμœΌλ‘œ μ–΄νŒ¨λ₯˜ μ„­μ·¨λΉˆλ„κ°€ μœ μ˜ν•œ λ³€μˆ˜λ‘œ μ„ μ •λ˜μ—ˆμœΌλ©°(p<0.05), μš”μ€‘ μˆ˜μ€μ˜ 총 뢄산에 λŒ€ν•΄ 2.4%κ°€ μ„€λͺ…λ˜μ—ˆλ‹€.λ‹€μ€‘νšŒκ·€λΆ„μ„μ„ ν†΅ν•˜μ—¬ μ„ μ •λœ 영ν–₯μš”μΈ(μ–΄νŒ¨λ₯˜ μ„­μ·¨λΉˆλ„) 보정 ν›„μ˜ μš”μ€‘ μˆ˜μ€ λ†λ„λŠ” 남여 λͺ¨λ‘ μœ μ˜ν•œ 차이λ₯Ό 보이지 μ•Šμ•˜μœΌλ‚˜, μ§‘λ‹¨κ°„μ˜ 사후뢄석 κ²°κ³Ό λ†μ΄Œμ§€μ—­μ— κ±°μ£Όν•˜λŠ” 남학생(1.62㎍/g-creatinine)에 λΉ„ν•΄ μ–΄μ΄Œμ§€μ—­(2.52㎍/g-creatinine)에 κ±°μ£Όν•˜λŠ” λ‚¨ν•™μƒμ˜ μš”μ€‘ μˆ˜μ€ λ†λ„λŠ” ν†΅κ³„μ μœΌλ‘œ μœ μ˜ν•œ μˆ˜μ€€μœΌλ‘œ λ†’κ²Œ λ‚˜νƒ€λ‚¬λ‹€. μ΄λŠ” μ–΄νŒ¨λ₯˜ μ„­μ·¨ λΉˆλ„ 외에도 μ—°κ΅¬λŒ€μƒμžλ“€μ˜ μˆ˜μ€ 농도에 영ν–₯을 λ―ΈμΉ˜λŠ” μš”μΈμ΄ μžˆλŠ” κ²ƒμœΌλ‘œ μ‚¬λ£Œλ˜λ©° λ³Έ μ—°κ΅¬μ—μ„œλŠ” μ‘°μ‚¬λ˜μ§€ μ•Šμ€ λ‹€λ₯Έ 영ν–₯μš”μΈμ— λŒ€ν•œ 닀각적인 μ ‘κ·Όκ³Ό 지속적인 연ꡬ가 ν•„μš”ν•  κ²ƒμœΌλ‘œ μ‚¬λ£Œλœλ‹€.λ³Έ 연ꡬ κ²°κ³Ό, μ–΄νŒ¨λ₯˜ μ„­μ·¨ λΉˆλ„κ°€ μš”μ€‘ μˆ˜μ€ 농도에 κ΄€λ ¨μ„± μžˆλŠ” 인자둜 λ‚˜νƒ€λ‚¬μœΌλ©°, 인ꡬ학적 μš”μΈ, μ‚¬νšŒγ†κ²½μ œμ  μš”μΈ, κ±°μ£Όν™˜κ²½, μƒν™œ μŠ΅κ΄€ 및 κ±΄κ°•μƒνƒœ, μ‹μ΄μŠ΅κ΄€ 등에 따라 μš”μ€‘ μˆ˜μ€ 농도가 λ‹¬λΌμ§€λŠ” κ²ƒμœΌλ‘œ κ΄€μ°°λ˜μ—ˆλ‹€. 이와 같은 κ²°κ³Όλ‘œμ„œ ν™˜κ²½μ˜€μ—ΌμœΌλ‘œ μΈν•œ μ€‘κΈˆμ† λ…ΈμΆœ 및 영ν–₯을 λΉ„κ΅ν‰κ°€ν•˜κΈ° μœ„ν•œ μ—°κ΅¬μ—μ„œλŠ” 이듀 영ν–₯μš”μΈμ„ ν¬ν•¨ν•œ 잠재적인 μš”μΈλ“€μ— λŒ€ν•œ 보닀 μ„Έλ°€ν•œ κ³ λ €κ°€ ν•„μš”ν•  κ²ƒμœΌλ‘œ μ‚¬λ£Œλ˜λ©°, 이에 λŒ€ν•œ 지속적인 연ꡬ와 λͺ¨λ‹ˆν„°λ§μ΄ 이루어져야 ν•  것이닀. [영문]Continuous exposure to low levels of heavy metals may result in bioaccumulation and adverse health effect in human. In several countries are doing biological monitoring to prevent heavy metals poisoning at occupational environment, and usually it is evaluating by concentration of blood, urine and hair. This study investigates urinary mercury concentration and the influence factor of urinary mercury from schoolchildren, and those factor examine doing how much influence in urinary mercury concentration.Urine sampling and questionnaire survey to 272 schoolchildren were taken October and November, 2003. Urine sample was spot urine, and construction of questionnaire was about sex, age, height, weight, passive smoking, dietary intake etc. Urinary mercury analysis used AAS(Shimadzu AAS-6800, Japan) attached by hydride vapor generator(Shimadzu HVG-1, Japan) for measuring. The variables, such as age, height, weight, dietary intake were considered as a potential influence factor of urinary mercury concentration. Statistical analysis of data were formed with the SPSS software package.Urinary mercury concentration was total average 2.88㎍/g-ct, and it''s distribution was skewed to the right. Most children were showed below 5㎍/g-ct, but some children were showed over 10㎍/g-ct.According to multiple regression analysis between urinary mercury concentration and influence factor, it was observed statistically significant(p0.05). But fishing village''s boys(2.52㎍/g-ct) were significantly high level than farming village''s boy(1.62㎍/g-ct).In those results, in environmental epidemiology study estimating and influence of heavy metal elements caused by environmental pollution, potential determinants including these should be considered carefully, and need to continuous research and monitoring.ope

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