• 제목/요약/키워드: Growth disorders

검색결과 311건 처리시간 0.031초

한국인(韓國人) 중고교생(中高校生)들의 흡연실태(吸煙實態)에 관(關)한 연구 (A Study on the Smoking Status of the Korean Middle and High School Students)

  • 박순영
    • 한국학교보건학회지
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    • 제7권1호
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    • pp.57-71
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    • 1994
  • I investigated actual conditions of smoking of teenagers who were randomly chosen middle and high school students. 1. Juvenile smoking 1) Parents' opinions of juvenile smoking Most parents do not want their children to smoke after growth : 88.6% of fathers (middle school students: 88.9%, high school students: 88.4%) and 95.1% of mothers (middle school students: 93.4%, high school students :95.5%). 2) Teenagers' opinions of smoking after growth The rate of students who will smoke after growth is 10.8% (middle school students: 12.0%, high school students: 9.9%): students in agricultural areas show the higher rate than those in cities. 3) Parents' opinions of their children's smoking now 1.5% of fathers want their children to smoke now (middle school students: 1.3%, high school students: 1.6%) and 1.1% of mothers do (middle school students: 0.6%, high school students: 1.5%). This shows that most parents do not want their children to smoke now. 4) Students' opinions of their friends' smoking now Students who want their friends smoke now cover 7.8% (middle school students: 7.1%, high school students: 8.4%). This rates are higher than those of parents shown in (3). And more high school students and more girl students gave the positive reponse than middle school boy and girl students, respectively. 5) Students' views of smoking "Look like an adult" covers the rate of 4.0% (boy: 7.8%, girl:3.6%) 6.7% of middle school students have this view, while 3.7% of high school students have. 16.1% of students had an experience of smoking during the last one year (boy: 29.9%, girl: 8.6%): this shows that the rate of the boy students is more than 3 times greater than that of the girl students and high students who experienced smoking last year covers 20.2%, while middle school students shows 10.9%. 6) Actual conditions of students' smoking The present rate of students' smoking is 22.4% (boy:38.3%, girl:13.8%): the rate of boy students is greater than that of girl students. Students who smoke more than pack of cigarettes a day cover 8.2% (boy: 17.5%, girl: 3.2%): 5.2% of middle school students (boy:11.4%, girl: 2.1%) smoke more than one pack while 10.7% of high school students do (boy:21.5%, girl: 4.2%). This shows that the rate of boy students' smoking is greater than that of girl students' smoking. 7) The rate of smoking of students' parents 75.4% of fathers (city: 74.5%, agricultural area:75.9%) smoke: and more than a half (62.4%) smoke more than a pack cigarettes a day. On the other hand, the rate of smoking mothers is 5.2%(city: 4.3%, agricultural area: 7.3%): the rate is higher in agricultural areas. 8) Opinions of smoking population in the future 61.4% of students answered that smoking population will increase, while 27.0% have the opinion that smoking population will decrease. 2. Opinions of the effects of smoking on health 1) Have you heard that smokers are likely to suffer from tuberclosis? 78.3% of students said yes (boy: 80.8%, girl: 76.4%): it is shown that the rate of boys is greater than that of girls. 2) Have you heard that smokers are likely to get out of endurance? 76.6% of students (boy: 69.3%, girl: 49.7%) answered yes: it is shown that the rate of boys is greater than that of girls. 3) Have you heard that heart-beats get fast when one smokes? 32.5% of students (boy: 35.5%, girl: 30.9%) answered yes: 32.2% in cities(boy: 33.0%, girl: 31.8%) and 33.5% in agricultural areas(boy: 41.8%, girl: 28.8%): and 28.7% middle students and 35.5% of high school students answered yes. 4) Have you heard that smokers are likely to have heart-diseases? 35.1% of students (boy: 34.0%, girl: 34.1%) answered yes: 35.3% in cities (boy: 37.2%, girl: 34.2%) and 36.7% in agricultural areas (boy: 39.0%, girl: 33.9%): 34.8% of middle school students and 35.4% of high school students. 5) Have you heard that smokers are likely to have a lung cancer? 91.4% of students (boy: 93.2%, girl: 89.9%) answered yes: 90.35% in cities and 94.2% in agricultural areas. 6) Have you heard that the life of smokers gets shorter? 94.3% of students (boy:94.6%, girl: 92.2%) answered yes. 7) Have you heard that pregnant smokers will deliver a baby with low birth weight? 29.6% of students (boy: 29.8%, girl: 29.4%) answered yes: the rates of boys and girls almost the same. 8) Have you heard that one feels calm when one smokes? 80.1% of students (boy: 81.8%, girl: 79.2%) answered yes: boys and girls showed almost the same rate. 3. Preventive measures Smoking people continued to increase all over the world because smoking not only mitigated emotional uneasiness such as loneliness, nervousness and so on, but also could be very helpful from the social perspective. This was so because they did not consider harmful effects of smoking on health, and victims. However, because any -one can have physical disorders caused by smoking, people should always keep in mind the following preventive measures. 1) Doctors or teachers should set an example of giving up smoking. Informing patients or students of harmful effects of smoking to persuade their family and relatives not to smoke. 2) Through mass media like newspapers, periodicals or broadcasting, to make people know harmful effects of smoking and not smoke. 3) To prohibit selling teenagers cigarette by law. 4) To prohibit smoking in public places like work places, offices, lecture rooms, recreation rooms, buses, trains and so on. 5) To decrease the rate of life insurance for non-smokers as in foreign countries and to give a warming of the harmful effects on cigarette packets or ads.

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Bisphenol A가 흰쥐의 태반 기능과 출산에 미치는 영향 (Effects of Bisphenol A on the Placental Function and Reproduction in Rats)

  • 이채관;김석현;문덕환;김정호;손병철;김대환;이창희;김휘동;김정원;김종은;이채언
    • Journal of Preventive Medicine and Public Health
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    • 제38권3호
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    • pp.330-336
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    • 2005
  • Objectives : The aim of this study was to investigate the effects of bisphenol A (BPA), an estrogen-like environmental endocrine disrupter, on the placental function and reproduction in rats. The mRNA levels of the placental prolactin-growth hormone(PRL-GH) gene family, placental trophoblast cell frequency and reproductive data were analyzed. Methods : The pregnancies of F344 Fisher rats ($160g{\pm}20g$) were detected by the presence of the copulatory plug or sperm in the vaginal smear, which marked Day 0 of pregnancy. Pregnant rats were divided into three groups. The control group was intraperitoneally injected with a sesame oil vehicle. The two remaining groups were injected with 50 or 500 mg/kg B.W/day of BPA, resuspended in sesame oil, on either days 7 to 11 or 16 to 20 of pregnancy, with the rats sacrificed on either day 11 or 20, respectively. The mRNA levels of PRL-GH and Pit-1a and b isotype genes were analyzed by Northern blot hybridization and reverse transcription-polymerase chain reaction. The hormone concentrations were analyzed by radioimmunoassay, and the frequency of the placental trophoblast cells observed by a histochemical study. Reproductive data, such as the placental weight and litter size, were surveyed on day 20. The fetal weight was surveyed for 4 weeks after birth. A statistical analysis was carried out using the SAS program (version 8.1). Results : The mRNA levels of the PRL-GH gene family, such as placental lactogen I, Iv and II, prolactin like protein A, C and Cv, and decidual prolactin-related protein were significantly reduced due to BPA exposure. The mRNA levels of the Pit-1a and b isotype genes, which induce the expression of the PRL-GH gene family in the rat placenta, were also reduced due to BPA exposure. The PL-Iv and PL-II concentrations were reduced in the BPA exposed group. During the middle to last stage of pregnancy (Days 11-20), a high dose of BPA exposure reduced the frequency of spongiotrophoblast cells, which are responsible for the secretion of the PRL-GH hormones. Reproductive data, such as the placental and fetal weights and the litter size, were reduced, but that of the pregnancy period was extended in the BPA exposed compared to the control group. Conclusions : BPA disrupts the placental functions in rats, which leads to reproductive disorders.

산전검사 대상 질환에 대한 법적 규제의 문제점에 대한 고찰 (Controversial issues in the legal restriction for prenatal genetic testing in Korea)

  • 최지영;정선용;김현주
    • Journal of Genetic Medicine
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    • 제4권2호
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    • pp.186-189
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    • 2007
  • 현재까지 보고 된 유전질환을 포함한 희귀질환은 6000종이 넘으며, 이 중 2007년 12월 현재, 1,500종(임상검사 목적 1,211종과 연구 목적 289)의 유전자 검사가 가능하다. 외국의 경우, 원인 유전자가 밝혀지고 진단이 가능한 모든 유전질환에 대해 착상 전 및 산전 유전자검사가 가능한데 반해, 국내에서는 2005년 제정된 생명윤리 및 안전에 관한 법률 제25조 2항에 의해 착상전 및 산전 유전자검사가 가능한 유전 질환은 63종으로 제한되어 있다. 이 보고에서는, 63종으로 제한된 검사항목에 포함되어 있지 않아 산전 진단을 할 수 없게 된 최근의 증례를 검토하고 문제점과 대안에 대해 논의하였다. X-성염색체 연관 열성질환인 MNK의 보인자로 확진된 L씨(여 38세)는 2명의 자녀를 출산하였는데, 그중 1명은 MNK에 이환된 남아로 출생 후 사망하였다. L씨는 2003년에 산전 유전자검사를 실시하여 정상의 남아를 출산하였다. 현재 임신 중인 L씨는 MNK에 이환된 남아를 또다시 출산할 가능성이 50%로 산전 유전자 검사가 필요하지만, 2005년에 제정된 생명윤리 및 안전에 관한 법률에 의해 산전 유전자검사가 법적으로 불가능하였다. 이 증례는 유전질환 검사항목을 63종으로 제한한 현행법의 문제점과 질환 형평성의 문제점을 실질적으로 보여주고 있다. 질환 명에 상관없이 유전질환의 가족력이 있는 가족에게는 산전 유전자검사에 대한 자기결정의 기회가 제공되어야 할 것이며, 만일, 현행법의 개정이 현실적으로 불가능하다면, MNK처럼 3년 내에 사망에 이르는 등 질병의 정도가 심하며, 효과적인 치료 방법이 없는 질환에 대해서는 산모나 가족이 원하는 경우 전문의의 전문적인 판단에 근거하여 예외가 인정되어야 한다고 사료된다.

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일 농촌지역 가족계획 풍문과 실천에 관한 연구 (A Study on Family Planning Rumors & Practice in Rural Communities)

  • 추수경
    • 대한간호학회지
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    • 제8권2호
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    • pp.63-77
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    • 1978
  • Studies pertaining to influential factors on adoption and practice of family planning are very much needed to lower fertility, for family planning has regarded as only one social acceptable means to curb the accelerated population growth. One of the influential factors is known as rumors on family planning methods that hinder the actual practice of family planning. This study generally aimed at disclosing rumors on family planning methods prevalent in rural communities so that one could gain some in sights to cope with the ill effects of rumors to promote family planning Practice in rural communities in Korea. In order to accomplish the general aims this study formulated following four specific objectives; 1. Find out types and frequencies of rumors exposed of contraceptive methods. 2. Find out the relationship between the rumors exposed and socio-economic and demographic characteristics of new village leaders and health workers. 3. Examine the relationship between family planing rumors and family planning practices. The materials for this study were drawn from the two different sets of data gathered in July and Octorber 1977 respectivily by Center for Population & family Planning, Yon sei University. One is current family planning practice among eligible women reaiding in 4 Myuns in Kwang Wha country and the other is Survey on Rumor on family planning method heard by new village leaders and health workers in the four myuns. The four Myuns were divided into 60 small areas. Current family planning practice rate in each small area and as a whole were calculated. The unit of analysis in this study was not the indviduel person but the 55 small areas. Percentage, average, F-Test t-test and a coefficient of correlation were used for statistical analysis. Results of this study could be summarized as follows: 1. Rumors by different method of contraception: Medical complications, gastro-intestinal disorders, and difficulty in usage one most prevalent rumors about oral pills. Around 49% -77% of the 55 areas were often heard and the most frequent rumor was related medical complications of oral pills. Rumors on medical complications and incomplete effect of intrauterines as contraceptive were heard 51-66% of the 55 small areas. Rumors that vasectomy resulted in family problems, for instance infiedelity of spouse were often heard to 44% of the 55 small areas. 2. Rumors by socio-economic and demographic characteristic of new village leader and health workers: Among the demographic characteristics such as sex, age and sex composition of children, sex and age differentials in frequency of rumors heard more observed, Female new village health workers have heard more frequently than male new village leader. (t = 7.137, p> 0.01, d.f. = 53, a coefficient of correlation 0.27, p>0.05) The Younger age group less than 40 years of age have heard rumors of than the group over 40 years old. (t = 7.18, p>0.01, d.f. = 53, a coefficient of correlation 0.27, p>0.05) However, it was not observable that a consistent sex and age differentials in frequency of rumors heard of each contraceptive mettled, But, more female new village health works heard of rumors about intrauterine device than male new village leaders. (t = 0.497, p> 0.01, d.f. = 53, a coefficient of correlatin 0.32, p>0.01) 3. It was found that there was no statistically significant relationship between the frequency of rumors heard and current family planning practices on the whole, However, frequency of rumors heard about vasectomy appeared to have a positive relationship with current practice of vasectomy. A rather consistent pattern of relationship between“requency of rumors heard”and current family practice rate was demonstrated of 10 graphes which showed the relation between the two variagles. The current family planning practice rate in the“never heard”group and “frequently heard”group was equally lower than that in“often heard”group. The relatively consistent ∩ pattern of relationship needs to be farther investigated, for this pattern is different from the relationship that has been assumed to exist between these two variables.

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한국인 신생아 음경 길이에 대한 연구 (Normative data of penile length in Korean newborns)

  • 김상엽;전재성;이상길
    • Clinical and Experimental Pediatrics
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    • 제51권9호
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    • pp.944-949
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    • 2008
  • 목 적 : 현대사회가 개방적으로 전환되면서 이세의 건강한 내외적 발육발달 뿐만 아니라 음경의 발달, 즉 음경 길이에 대한 관심이 증가하였다. 왜소음경은 음경 길이가 또래의 평균보다 2표준편차 이상 벗어나는 경우로 정의하며 염색체 이상 및 내분비 이상과 관련이 있을 수 있다. 저자들은 한국인 신생아의 음경 길이에 대한 표준화된 자료를 제시하고 왜소음경에 대한 기준을 마련하고자 본 연구를 시행하였다. 방 법 : 2007년 2월부터 2007년 6월까지 대구 파티마병원에서 태어났으며 임신과 분만 시 관련 합병증이 없었던 재태주령 37주에서 42주 사이의 남아 신생아 168명을 대상으로 하였다. 음경 길이의 측정은 CPLM 방법과 syringe 방법을 이용하였으며 동일 검사자가 각 측정방법마다 서로 다른 시간에 두 번씩 측정하였다. 결 과 : 한국인 신생아 음경길이는 CPLM 방법으로 측정 시 $3.02{\pm}0.25cm$, syringe 방법으로 측정 시 $3.29{\pm}0.26cm$로 도출되었다. 재태주령이 길수록 CPLM 방법(F=36.467, $R^2=0.180$, P<0.001) 및 syringe 방법(F=9.149, $R^2=0.052$, P<0.001)에서 음경길이는 유의하게 길었지만, syringe 방법은 CPLM 방법에 비해 재태주령과 음경길이와의 관계를 설명하기에 다소 부족했다. 두 가지 방법을 이용하여 구한 신생아의 음경길이는 통계학적으로 큰 차이는 없었으며 Pearson's 상관관계는 P=0.01 수준에서 두 방법 모두 0.631로 유의하게 나타났다. 결 론 : 본 연구에서는 재태주령이 길수록 음경길이도 길어지며 CPLM 방법으로 2.5 cm 그리고 syringe 방법으로 2.8 cm 미만이면 한국인 신생아에게 있어서 왜소음경으로 추정할 수 있으며 잠복음경일 경우 syringe 방법을 이용하면 도움이 될 수 있다. 왜소음경으로 추정되면 보호자와 충분한 상의 후 외래 추적관찰 및 추가적인 내분비 및 염색체 검사가 필요할 것이다.

PET 이용 현황 및 전망 (Current Status and Future Perspective of PET)

  • 이명철
    • 대한핵의학회지
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    • 제36권1호
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    • pp.1-7
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    • 2002
  • Positron Emission Tomography (PET) is a nuclear medicine imaging modality that consists of systemic administration to a subject of a radiopharmaceutical labeled with a positron-emitting radionuclide. Following administration, its distribution in the organ or structure under study can be assessed as a function of time and space by (1) defecting the annihilation radiation resulting from the interaction of the positrons with matter, and (2) reconstructing the distribution of the radioactivity from a series of that used in computed tomography (CT). The nuclides most generally exhibit chemical properties that render them particularly desirable in physiological studies. The radionuclides most widely used in PET are F-18, C-11, O-15 and N-13. Regarding to the number of the current PET Centers worldwide (based on ICP data), more than 300 PET Centers were in operation in 2000. The use of PET technology grew rapidly compared to that in 1992 and 1996, particularly in the USA, which demonstrates a three-fold rise in PET installations. In 2001, 194 PET Centers were operating in the USA. In 1994, two clinical and research-oriented PET Centers at Seoul National University Hospital and Samsung Medical Center, was established as the first dedicated PET and Cyclotron machines in Korea, followed by two more PET facilities at the Korea Cancer Center Hospital, Ajou Medical Center, Yonsei University Medical Center, National Cancer Center and established their PET Center. Catholic Medical School and Pusan National University Hospital have finalized a plan to install PET machine in 2002, which results in total of nine PET Centers in Korea. Considering annual trends of PET application in four major PET centers in Korea in Asan Medical Center recent six years (from 1995 to 2000), a total of 11,564 patients have been studied every year and the number of PET studies has shown steep growth year upon year. We had 1,020 PET patients in 1995. This number increased to 1,196, 1,756, 2,379, 3,015 and 4,414 in 1996,1997,1998,1999 and 2000, respectively. The application in cardiac disorders is minimal, and among various neuropsychiatric diseases, patients with epilepsy or dementia can benefit from PET studios. Recently, we investigated brain mapping and neuroreceptor works. PET is not a key application for evaluation of the cardiac patients in Korea because of the relatively low incidence of cardiac disease and less costly procedures such as SPECT can now be performed. The changes in the application of PET studios indicate that, initially, brain PET occupied almost 60% in 1995, followed by a gradual decrease in brain application. However, overall PET use in the diagnosis and management of patients with cancer was up to 63% in 2000. The current medicare coverage policy in the USA is very important because reimbursement policy is critical for the promotion of PET. In May 1995, the Health Care Financing Administration (HCFA) began covering the PET perfusion study using Rubidium-82, evaluation of a solitary pulmonary nodule and pathologically proven non-small cell lung cancer. As of July 1999, Medicare's coverage policy expanded to include additional indications: evaluation of recurrent colorectal cancer with a rising CEA level, staging of lymphoma and detection of recurrent or metastatic melanoma. In December of 2001, National Coverage decided to expand Medicare reimbursement for broad use in 6 cancers: lung, colorecctal, lymphoma, melanoma, head and neck, and esophageal cancers; for determining revascularization in heart diseases; and for identifying epilepsy patients. In addition, PET coverage is expected to further expand to diseases affecting women, such as breast, ovarian, uterine and vaginal cancers as well as diseases like prostate cancer and Alzheimer's disease.

제초제 저항성 형질전환 감자의 농업적 특성, 영양 성분 및 해충 반응성 평가 (Evaluation of Agronomic Characteristics, Nutritional Contents, and Insect Response of the Transgenic Potato Resistant to Glufosinate Ammonium)

  • 안순영;조광수;서효원;이정윤;배신철;조지홍;박영은;김주일;김현준;조현묵
    • 원예과학기술지
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    • 제29권3호
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    • pp.247-254
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    • 2011
  • 제초제 저항성 유전자를 국내 장려품종 감자인 '대지'에 도입하여 제초제 저항성 감자계통들을 개발하였으며, 그 중에서 농업적 형질이 우수하며 실용화 가능성이 큰 계통을 선발하기 위하여 3년간 포장 검정을 실시하였다. 제초제 저항성 감자 4계통 중에서 가장 상업화에 적합한 Bar 3 계통을 선발하였으며, Bar 3 계통은 비형질전환 감자인 '대지'와 비교하여 수량성과 주요 작물학적인 특성, 영양학적 특성 및 충에 대한 반응에서 차이를 발견할 수 없었고 두 감자계통과 품종의 실질적 동등성을 확인할 수 있었다. Bar 3 계통은 5배의 고농도 제초제 처리에서도 피해를 나타내지 않았으며, 형질전환 후 세대가 진행되는 동안의 수량과 식물학적인 특성은 비슷한 경향을 나타내었다. Bar 3 계통은 더뎅이병과 실금이나 2차 생장과 같은 생리적 장해 발생률이 낮았으며, 그 이유는 명확하게 구명되지 않았으나, Bar 3 계통과 같은 제초제 저항성 감자를 사용할 경우 감자 재배지역에서의 더뎅이병 발생과 토양 유실 문제를 줄일 수 있을 것으로 판단되었다. 비형질전환 감자와 형질전환 Bar 3 계통의 영양학적 특성(무기성분, 비타민 C와 아미노산 함량)과 해충(파밤나방)에 대한 반응을 분석비교한 결과, 두 감자 계통과 품종의 차이를 발견할 수 없었다.

허파혈관주위세포에서 저산소증에 의한 생존능의 억제와 유전자 발현의 변화 (Inhibition of Viability and Genetic Change in Hypoxia-treated Lung Pericytes)

  • 신종욱;김계영;이영우;정재우;이병준;김재열;조인호;박인원;최병휘
    • Tuberculosis and Respiratory Diseases
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    • 제57권1호
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    • pp.37-46
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    • 2004
  • 연구 배경 : 허파혈관주위세포는 허파미세혈관에서 혈액공기 장벽을 이루고 있는 중요한 세포이다. 이 세포는 생리학적으로 혈류와 혈관의 투과성을 조절하는 기능이 있다. 본 연구는 급성폐손상/급성호흡곤란증후군에서 혈관 과투과성 및 개형에 혈관주위세포의 변화가 중요한 역할을 할 것으로 보고 시작하게 되었다. 흰쥐로 부터 일차 배양한 허파혈관주위세포에 저산소 상태를 만들었을 때, 세포의 생존능에 미치는 영향과 저산소증에 의해 유도되는 유전자의 발현을 살펴보았다. 방 법 : 흰쥐로부터 허파혈관주위세포를 일차 배양 및 계대 배양하였다. 광학 현미경 및 세포 면역 화학 염색으로 세포를 확인하였다. 2% $O_2$의 세포 배양기와 $200{\mu}M$ $CoCl_2$를 처리하였다. 세포의 증식은 tryphan blue 염색 후 세포수를 세는 방법을 택하였다. 유전자 발현은 역전사 중합 효소 연쇄반응을 이용하였다. 결 과 : 1. 흰쥐로부터 허파혈관주위세포를 성공적으로 일차 배양 및 계대 배양할 수 있었다. 2. 2% $O_2$$CoCl_2$에서 혈관주위세포는 24시간, 36시간, 48시간에 증식이 억제되었다. 3. 허파혈관주위세포에 저산소 상태의 자극을 주면 VEGF와 smad-2의 발현이 현저하게 증가하였다. 4. 허파혈관주위세포의 HIF$1{\alpha}$, COX-2는 저산소상태에서 VEGF, smad-2에 비해 발현의 변화가 현저하지 않았다. 결 론 : 허파혈관주위세포를 일차 배양함으로써 허파꽈리혈관장벽의 연구를 위한 한 모델을 만들었고, 저산소 상태에서 증식의 억제와 유전자 발현의 변화를 살펴봄으로써 허파혈관손상의 기전을 규명하는데 향후 도움이 될 것으로 보인다.

SW1353 인간 연골세포에서 산화적 스트레스에 대한 schisandrin A의 세포 보호 효과 (Cytoprotective Effects of Schisandrin A against Hydrogen Peroxide-induced Oxidative Stress in SW1353 Human Chondrocytes)

  • 정진우;최은옥;권다혜;김범회;박동일;황혜진;김병우;최영현
    • 생명과학회지
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    • 제27권9호
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    • pp.1070-1077
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    • 2017
  • 활성산소종으로 유도되는 연골 세포의 apoptosis는 퇴행성 관절염의 발병 기전에 중요한 역할을 한다. Schisandrin 속의 과일에서 발견되는 생체 활성 화합물인 schisandrin A는 여러 가지 약리학적 작용을 하는 것으로 보고되고 있다. 현재까지 schisandrin A의 유도체들의 항산화 효과에 대해서는 여러 연구가 보고되었지만, schisandrin A의 항산화 효능의 분자 기전은 아직 미해결 상태로 남아 있다. 본 연구는 SW1353 인간 연골세포에서 산화적 스트레스($H_2O_2$)에 대한 schisandrin A의 세포 보호 여부를 조사하였다. 본 연구의 결과에 의하면 schisandrin A는 PARP 단백질의 분해와 caspase-3의 활성 차단을 통해 $H_2O_2$에 의해 유도된 성장 억제와 apoptosis를 유의적으로 억제하였다. 이러한 schisandrin A의 anti-apoptotic 효과는 미토콘드리아 기능 손상의 억제와 pro-apoptotic Bax의 발현 증가 및 anti-apoptotic Bcl-2의 발현 감소의 차단과도 관련이 있었다. 또한, schisandrin A는 ROS의 생성과 DNA 손상 마커인 H2AX의 인산화도 효과적으로 저해하였다. 따라서 SW1353 연골세포에서 schisandrin A는 산화적 스트레스에 의한 ROS 생성의 억제를 통하여 apoptosis와 DNA 손상을 보호하였음을 알 수 있었다. 결론적으로 본 연구의 결과는 schisandrin A가 ROS의 과잉 생산으로 인한 산화적 장애에 치료적 잠재력이 있음을 보여준다.

습성 연령관련황반변성 환자에서 안구 방수 내 비타민 D 분석 (Analysis of 25-Hydroxy Vitamin D in the Aqueous Humor of Age-related Macular Degeneration Patients)

  • 송원석;윤원태;김용규;박성표
    • 대한안과학회지
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    • 제59권11호
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    • pp.1024-1029
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    • 2018
  • 목적: 습성 연령관련황반변성 환자의 방수 내 비타민 D 농도를 측정하여, 체내 비타민 D 농도가 질병의 임상 양상과 어떠한 관련성을 보이는지 알아보고자 한다. 대상과 방법: 50세 이상의 습성 연령관련황반변성 환자 34명 52안과, 망막 질환이 없는 백내장수술 환자 17명 23안에서 안구 방수를 채취하여 비타민 D 농도를 측정하고 비교하였다. 환자군을 안구 방수 내 비타민 D 수치의 중간값을 기준으로 수치가 높은 군과 낮은군으로 나누어 황반변성과 관련된 여러 임상 양상과의 관련성을 살펴보았다. 결과: 황반변성군에서 대조군에 비해 안구 방수 내 비타민 D 농도가 유의하게 낮았다(황반변성군 $10.03{\pm}10.1ng/mL$ vs. 대조군 $40.8{\pm}16.4ng/mL$, p<0.001). 환자군 내에서 비타민 D 수치가 높은 군은 낮은 군에 비해 섬유혈관성 망막색소상피박리 유형의 비율이 높았다(높은 군 65% vs. 낮은 군 27%, p=0.003). 다중 선형 회귀 분석 결과 안구 방수 내 비타민 D 수치와 6개월 이내 총 주사 횟수와 유의한 관련성을 보였다(standardize coefficient ${\beta}=-0.336$). 결론: 습성 연령관련황반변성 환자는 대조군에 비해 안구 방수 내 비타민 D 수치가 유의하게 낮았다. 하지만 환자군 내에서는 비타민 D 수치가 낮을 시 더 많은 유리체강 내 주사치료 횟수와 관련되는 한편, 수치가 높은 경우 섬유혈관성 망막색소상피박리 및 더 낮은 시력과 관련을 보이는 등 관련성은 일정하지 않았다. 눈에서의 국소적인 비타민 D 수치와 질환과의 관련성에 대한 추가 연구가 필요하겠다.