• Title/Summary/Keyword: 노화에 대한 기대

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The Association Between Expectations Regarding Aging and Health-Promoting Behaviors Among Korean Older Adults (노화에 대한 기대수준이 노인의 건강증진행위에 미치는 영향)

  • Kim, Su-Hyun
    • Journal of Korean Academy of Nursing
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    • v.37 no.6
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    • pp.932-940
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    • 2007
  • Purpose: This study was performed to measure expectations regarding aging among community-residing older adults, identify sociodemographic characteristics associated with the level of expectations regarding aging, and examine whether expectations regarding aging were associated with health-promoting behaviors. Methods: Data was collected by using questionnaires of a short version of the Expectations Regarding Aging Survey (ERA-18) and Health Promoting Lifestyle Profile II (HPLP II) from 99 older adults who resided in the community of Kyunggi, Daegu, and Kyungpook province. Results: More than 75% of the participants reported that it was an expected part of aging to have more aches and pains, to become depressed, and to become more forgetful. The mean score of expectations regarding aging was $23.15{\pm}17.80$ (possible range 0-100). The old-old, women, those with less education, less monthly allowance and poor health status had lower expectations regarding aging than other elderly. After controlling for sociodemographic characteristics and perceived health, expectations regarding aging were independently associated with health-promoting behaviors in older adults. Conclusion: The findings demonstrate that older Korean adults have low expectations regarding aging, and expectations regarding aging influence health-promoting behaviors.

Effects of Perceived Health Status, Self-esteem and Family Function on Expectations Regarding Aging among Middle-aged Women (중년여성의 지각된 건강상태, 자아존중감, 가족기능이 노화에 대한 기대에 미치는 영향)

  • Kweon, Yoo Rim;Jeon, Hae Ok
    • Journal of Korean Academy of Nursing
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    • v.43 no.2
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    • pp.176-184
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    • 2013
  • Purpose: The purpose of this study was to investigate expectations regarding aging by middle-aged women in the community, and identify factors contributing to their expectations about aging. Methods: Participants in the survey for this study were 303 middle-aged women from community health centers and religious facilities in Seoul, Gyeonggi Province, and Chungcheongbuk Province. Data were collected from March 2 to April 17, 2012 using self-report structured questionnaires. The instruments were the Health Perceptions, Rosenberg Self-esteem Scale (RSES), Family APGAR, Expectations Regarding Aging (ERA-12). The data were analyzed using t-test, one-way ANOVA, Scheffe test, Pearson correlation coefficients and hierarchical multiple regression with IBM SPSS/WIN 20.0 program. Results: Perceived health status (${\beta}$=0.16, p=.009) and self-esteem (${\beta}$=0.20, p=.001) of middle-aged women were identified as significant predictors of expectations regarding aging, after adjusting for age, education, occupation, monthly income and menstrual status. Conclusion: These results suggest that nurses should make an effort to improve expectations about aging among middle-aged women. Ultimately, community health programs for middle aged women need to be developed to achieve successful aging.

Brain Iron Imaging in Aging and Cognitive Disorders: MRI Approaches (노화 및 인지기능장애에서 뇌 철 영상 기법: 자기공명영상을 이용한 접근)

  • Jinhee Jang;Junghwa Kang;Yoonho Nam
    • Journal of the Korean Society of Radiology
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    • v.83 no.3
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    • pp.527-537
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    • 2022
  • Iron has a vital role in the human body, including the central nervous system. Increased deposition of iron in the brain has been reported in aging and important neurodegenerative diseases. Owing to the unique magnetic resonance properties of iron, MRI has great potential for in vivo assessment of iron deposition, distribution, and non-invasive quantification. In this paper, we will review the MRI methods for iron assessment and their changes in aging and neurodegenerative diseases, focusing on Alzheimer's disease. In addition, we will summarize the limitations of current approaches and introduce new areas and MRI methods for iron imaging that are expected in the future.

Anti-photoaging Effects of Flavonoid glycosides from shizophragma hydrangeoides (바위수국으로부터 분리한 플라보노이드 배당체의 광노화 예방 효과)

  • Sung Chun Kim;So Yeon Oh;Hyejin Hyeon;Yong-Hwan Jung;Young-Min Ham
    • Proceedings of the Plant Resources Society of Korea Conference
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    • 2022.09a
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    • pp.25-25
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    • 2022
  • 피부 노화는 피부와 피부 지지층 등의 광범위한 퇴행 과정을 말한다. 피부 노화의 원인은 흡연, 공해, 스트레스 등이 있지만, 그 중에서도 자외선(ultra violet, UV) 조사가 가장 큰 요인으로 꼽힌다. 반복적인 자외선 조사에 의해 진행되는 피부노화를 광노화라고 하며 그 가장 큰 특징으로는 콜라겐 섬유와 엘라스틴의 감소로 야기되는 주름을 들 수 있다. 본 연구에서는 제주에서 채집한 바위수국의 추출물 및 분획물의 항산화 및 자외선으로 인한 피부노화 예방(anti-photoaging) 효능을 확인하고, 활성물질을 분리하여 광노화 예방 효능과 그 메커니즘을 확인하였다. 실험에 사용된 바위수국은 범의귀과의 덩굴성 식물로 바위면이나 나무줄기 등에 붙어서 자라며, 한국(제주, 울릉도)과 일본에 분포한다. 바위수국 추출물과 분획물에서 총 페놀 함량. 총 플라보이드 함량, DPPH 및 ABTS 라디칼소거 활성의 항산화 실험 결과, 부탄올과 에틸아세테이트 분획층에서 강력한 항산화 활성이 관찰되었다. 또한 UVA를 조사한 인간 진피 섬유아세포 (human dermal fibroblast, HDF)데 대한 콜라겐 분해효소인 matrix metalloproteinase-1(MMP-1) 생성 억제 활성을 확인한 결과, 부탄올 분획층이 세포 생장 저해 없이 가장 우수한 효능이 확인되었다. 따라서 부탄올 분획층에서 주요 성분 분리 실험을 수행하여 총 4개의 화합물을 분리하였다; Chlorogenic acid (1), Quercetin-3-O-glucosyl-(1-2)-rhamnoside (2), Quercetin-3-O-xylosyl-(1-2)-rhamnoside (3), Quercitrin (4). 분리한 4개의 물질의 MMP-1 생성 억제 활성을 비교한 결과 화합물 2가 세포독성 없이 MMP-1 생성 억제 효능이 우수하였고, 이후 화합물 2의 광노화 예방 효능과 그 메커니즘을 확인하였다. 화합물 2는 MMP-1의 생성을 억제할 뿐만 아니라 procollagen type I의 생성을 증가시켰으며, MMP-1 생성에 관여하는 mitogen-activated protein kinase (MAPK)/activator protein-1 (AP-1) 신호전달경로를 하향 조절하며, 콜라겐 생성과 관련된 Transforming growth factor-β (TGF-β)/Smad 신호전달경로를 상향 조절하여 UVA에 의한 광노화 예방에 효능을 나타내었다. 이러한 결과들을 바탕으로, 바위수국은 항노화(anti-aging) 기능성 화장품 및 이너뷰티 기능성 식품 소재로 개발이 가능할 것으로 기대된다.

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Bibliographic Analysis of Aging Anxiety and Lifestyle (노화불안과 라이프스타일에 대한 계량서지학적 분석)

  • Park, Sun Ha;Park, Hae Yean;Lim, Young Myoung
    • Therapeutic Science for Rehabilitation
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    • v.11 no.2
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    • pp.25-37
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    • 2022
  • Objective : Through the bibliographic analysis method, the flow of research is grasped from a macroscopic point of view and the connection system of key words is conducted. The purpose of this is to provide basic data for conducting research on aging anxiety and lifestyle. Methods : Among the bibliographic analysis methods, a citation analysis method that identifies the association based on the number of citations and a simultaneous appearance word analysis method that identifies the association based on the number of keywords appeared was used. VOSviewer was used to cluster and chart the analyzed information. Results : The frequency of occurrence of papers by year showed a gradual increase until 2017 and a rapid increase from 2018. In the field of research paper study, research was most actively conducted in the field of psychiatry. In the citation analysis, the United States, Australia, and the United Kingdom showed high correlation with each other, and as a result of conducting simultaneous word analysis on major keywords, words with high association with aging anxiety were found to be depression. Conclusion : This study is meaningful in that it grasped the flow of aging anxiety and lifestyle research from a macroscopic point of view using a bibliographic analysis method. Based on this, it is expected to understand the importance of lifestyle from the preventive point of view of aging and to be used as basic data for intervention and related education.

Testing the Validity and Reliability of Korean Version of the Expectations Regarding Aging (ERA-12) Instrument among Middle-aged and Elderly Women (중년 및 노년기 여성의 한국어판 노화에 대한 기대수준 측정도구(ERA)의 타당도와 신뢰도 검증)

  • Park, Min Hee;Kweon, Yoorim
    • Journal of Korean Public Health Nursing
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    • v.28 no.3
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    • pp.460-470
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    • 2014
  • Purpose: The purpose of this study was to develop and test the validity and reliability of the Korean version of the expectations regarding aging(ERA-12) among middle-aged and elderly women. Methods: The study was conducted as a cross-sectional survey which used a self-report questionnaire. A convenience sampling method was utilized, and data on 298 middle-aged and elderly women were collected. Korean version of ERA-12 was articulated through forward-backward translation methods. Internal consistency reliability, construct and criterion validity were analyzed using PASW WIN (20.0) for testing the use of Korean version of ERA-12. Results: ERA-12 consisted of three factors - expectations regarding physical health, mental health and cognitive function, explaining 56.0% of the total variance in ERA-12. The ERA-12 total score showed positive correlation with RSES (r=.33). The Cronbach's alpha reliability coefficient was .81 for the overall instrument and .68-.73 for three factors. Conclusion: Korean version of ERA-12 has high validity and reliability. Therefore, this instrument may be utilized to assess expectations regarding aging for Korean middle-aged and elderly women.

Free radical scavenging activity and characterization of the extrcts from Alpinia katsumadai and Areca catechu (초두구와 빈량 추출물의 자유라디칼 소거 활성 효과와 특성에 관한 연구)

  • 강순옥;이건국;최정도
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.27 no.1
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    • pp.133-150
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    • 2001
  • 자유라디칼은 반응성이 커서 세포의 구성 물질인 단백질, 지질, 당, DNA등과 반응하여 세포 및 조직을 손상시킴으로서 노화를 가져온다. 이러한 자유라디칼들은 자외선, 일반 대사, 스트레스, 질병, 흡연 등에 의해 생성되고 특히, 활성 산소 종인 hydroxyl radical, superoxide radical, lipid peroxide radical등은 피부 노화를 발생시키는 원인이 된다. 따라서 본 연구에서는 한방 식물로부터 유해한 활성 산소종을 소거하는 활성을 가진 물질을 기 위해 1차 스크리닝 하였고, 이중 육두구, 관중, 초두구, 빈랑, 금은화, 포공영, 우롱차, 황금, 녹차 추출물이 효과가 높게 나타났으며, 그중 초두구와 빈랑 90% 메탄올 추출물에서 가장 우수한 소거 활성을 나타냄으로써 이 추출물에 대하여 자유라디칼 소거 활성에 대하여 여러 가지 생물학적 활성을 조사하였다. 초두구와 빈랑추출물에 대한 hydroxyl radical, superoxide radical, lipid peroxide radical을 소거하는 활성을 핵산, 클로로포름, 에틸아세테이트, 물층으로 분획하여 조사한 결과 에틸아세테이트층에서 가장 우수한 활성을 보였다. 에틸아세테이트 분획에 대한 lipid peroxide radical 소거에 있어서 빈랑 추출물이 $IC_{50}$/ 값 50 $\mu\textrm{g}$/ml, 초두구 추출물은 $IC_{50}$/ 값 59 $\mu\textrm{g}$/ml로서 기준물질로 사용되는 vitamic C (120 $\mu\textrm{g}$/ml)나 butylated hydroxyl toluene (80 $\mu\textrm{g}$/ml) 보다 더 우수한 소거 효과를 보여주었고, hydroxyl radical을 소거하는 능력은 25 $\mu\textrm{g}$/ml와 150 $\mu\textrm{g}$/ml로 hydroxyl radical의 소거 능이 좋은 vitamin C (180 $\mu\textrm{g}$/ml) 보다 뛰어난 소거 활성을 나타내었다. Superoxide radical을 소거하는 효과는 초두구 추출물의 $IC_{50}$/ 값 10 $\mu\textrm{g}$/ml, 빈랑 추출물이 15 $\mu\textrm{g}$/ml을 나타냈고, 이는 기준 물질인 vitamin C (35 $\mu\textrm{g}$/ml)보다 좋은 소거 활성을 보여주었으며, gallic acid 9 $\mu\textrm{g}$/ml과 유사한 효과를 나타내었다. 사람 섬유아세포를 배양하여 hydroxyl radical과 superoxide radical를 발생시킨 후 초두구와 빈랑 추출물의 세포 보호 효과를 실험한 결과 25 $\mu\textrm{g}$/ml의 농도로 처리하였을 때 각각 85% 이상의 우수한 세포 보호 효과를 나타내었다. 초두구로부터는 자유라디칼 소거 활성이 있는 물질을 분리하기 위하여 분획한 후 가장 높은 소거 활성을 보인 에틸아세테이트 층에 대하여 silica column chromatography, preparative TLC를 수행하였다. 초두구로부터 분리된 물질은 HPLC를 이용한 분리에서 phenol성 물질인 gallic acid와 동일한 retention time을 보여줌으로써 초두구로부터 분리된 물질은 gallic acid와 유사한 phenol성 물질이거나 그의 유도체일 것으로 추측된다. 따라서, 초두구와 빈랑 추출물은 피부 노화의 주요인이 되고 있는 lipid radical, hydroxyl radical, superoxide radical을 소거하는 활성이 뛰어나 자유라디칼에 의하여 발생되는 피부노화를 방지할수 있는 물질로서의 효과가 기대된다.가 기대된다.

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The Antioxidant and Anti-aging Effects of Treatment with Schisandra chinensis Seeds Fractions in UVB-irradiated Human HaCaT Cells (자외선 B에 유도된 사람유래 HaCaT cells에서의 오미자 종자 분획물의 항산화 및 항노화 효과)

  • Choi, Eun-Young;Sohn, Ho-Yong;Lee, Jin-Tae
    • Journal of Life Science
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    • v.29 no.10
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    • pp.1071-1079
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    • 2019
  • In this study, we investigated the antioxidant and anti-aging activities of Schisandra chinensis seed fractions by adding them to UVB-irradiated HaCaT cells and analyzing the suppression of matrix metalloproteinases (MMPs). An electron-donating assay, ABTS radical scavenging assay, and hydrogen peroxide scavenging assay showed that the ethyl acetate fraction of S. chinensis seed (SCEAf) has scavenging activities. A collagenase inhibition activity assay showed that SCEAf had inhibitory effects of over 92.3% at $500{\mu}g/ml$ concentration. An MTT assay was performed to determine the cytotoxicity of SCEAf in HaCaT cells and the results showed that SCEAf increased cellular viability in a concentration-dependent manner. In addition, SCEAf was found to increase the viability of cells irradiatged by UVB $50mJ/cm^2$. To examine the anti-aging effects of SCEAf on HaCaT cells irradiated with UVB $50mJ/cm^2$, the expression of MMP-1 and -3 was analyzed by Western blotting and reverse-transcription polymerase chain reaction. The results showed that MMP-1 and -3 proteins and mRNA levels were downregulated in a concentration-dependent manner in response to SCEAf. These results suggest that SCEAf can prevent aging and alleviate aging symptoms by inhibiting collagenase activity in skin keratinocytes damaged by UVB. Therefore, S. chinensis seeds may have the potential for use as functional ingredients with anti-aging effects in the cosmetic and food industries.

A Study for Aging Factor of Bulletproof Helmet : High Temperature Treatment (방탄헬멧의 노화인자에 관한 연구 : 고온 환경 처리를 중심으로)

  • Park, Ho Yun;Gu, Seung Hwan
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.21 no.6
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    • pp.332-339
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    • 2020
  • This study was a prior study to establish the shelf life of bulletproof helmets, considered the aging factor of bulletproof helmets. To estimate the aging factor of bulletproof helmets, we established a hypothesis that the 'temperature' factor would have the greatest impact on the shelf life of the bulletproof helmet, considering the environmental treatment of the American army's bulletproof helmet's materials. To verify the hypothesis, high temperature acceleration environmental treatment of bulletproof helmets was performed, and the Arrhenius formula was applied to calculate the shelf life. The study result confirmed the negative correlation between bulletproof performance and high temperature, and the influence of temperature as an aging factor was not significant by deriving life by using the Arrhenius model. The limitation of this study is that we couldn't obtain enough samples due to the specificity (miliary supplies) of the test subjects. However, given that the life-related research on bulletproof helmets has not been carried out, this research has great implications and could be used as a reference for improving the Korean Army's bulletproof helmet specifications.

Peptides-derived from Scales of Branchiostegus japonicus Inhibit Ultraviolet B-induced Oxidative Damage and Photo-aging in Skin Cells (피부세포에서 옥돔 비늘로부터 추출한 펩타이드의 UVB에 대한 산화적 손상 및 광 노화 억제)

  • Oh, Min Chang;Kim, Ki Cheon;Ko, Chang-ik;Ahn, Yong Seok;Hyun, Jin Won
    • Journal of Life Science
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    • v.25 no.3
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    • pp.269-275
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    • 2015
  • Collagen peptides, which are found at high concentrations in the human body, are present in animal bones and the skin of marine organisms, namely, fish scales. Collagen is the most abundant structural protein of various connective tissues in animals. Furthermore, it is widely used in biomedical material, pharmaceutical, cosmetic, food, and leather industries. Peptides extracted from scales of various fish protect against ultraviolet B (UVB)-induced skin damage and photo-aging. However, the protective effects of collagen peptides derived from the scales of Branchiostegus japonicus against UVB exposure are unclear. This study investigated the effects of peptides larger than 1 kDa (high-molecular weight peptides [HMP]) and smaller than 1 kDa (low-molecular weight peptides [LMP]), derived from extracts of B. japonicus scales, against UVB-induced skin damage and photo-aging. These peptides scavenged 1,1-diphenyl-2-picrylhydrazyl radicals in a dose-dependent manner. In UVB-exposed HaCaT human keratinocytes, LMP inhibited 8-isoprostane generation, a marker of cellular lipid peroxidation. The peptides also suppressed the UVB-induced increase in tyrosinase activity and melanin content in B16F10 mouse melanoma cells. In addition, the LMP and HMP treatment suppressed UVB-induced elastase and matrix metalloproteinase-1 activities in the HaCaT cells. These results indicate that peptides derived from B. japonicus scales have antioxidant, antiphoto-aging, and skin-whitening effects.