• 제목/요약/키워드: CDC

검색결과 459건 처리시간 0.03초

안정적이며 지속적 밀(Triticum aestivum) 미성숙배 조직배양을 위한 스피드 브리딩 조건의 배양 효율 검정 (Evaluation of Tissue Culture Efficiency in a Speed Breeding System for Stable and Sustainable Supported Wheat (Triticum aestivum) Immature Embryogenesis)

  • 이건희;김태겸;최창현;김재윤
    • 한국작물학회지
    • /
    • 제65권4호
    • /
    • pp.365-376
    • /
    • 2020
  • 미성숙배를 이용한 조직배양은 높은 재분화율로 인하여 밀 형질전환에 적용하기 위한 가장 좋은 방법이지만 매우 한정적인 수집시기와 생육조건으로 인해 이용하기 위한 시간의 제한과 많은 노동력이 집약되어있다. 따라서 안정적이고 지속적인 미성숙배 수집을 위해 스피드 브리딩 조건을 이용하여 출수가 촉진된 밀 이삭을 이용한 미성숙배 조직배양의 효율을 검정하였고, 연구결과는 다음과 같다. 1. 스피드 브리딩 조건의 출수기는 정상조건과 비교하여 36일에서 54일까지 단축되었으며, 개화 후 11일 된 영과에서 수집된 미성숙배 조직배양의 재분화율과 소식물체 출현 비율은 정상조건과 비교하여 유의한 차이가 없다는 것을 확인하였다. 2. 두 배양 조건에서 항산화 효소 활성 분석 결과 차이가 나타나지 않았으며, 연관 표지 유전자 발현 검정을 통하여 일장과 세포분열과의 관계를 검정하여 스피드 브리딩 조건에서 수집된 이삭의 안정성을 검정하였다. 3. 본 연구 결과는 스피드 브리딩 조건을 활용한 미성숙배 조직배양에 활용될 것이며 관련 유전자 발현 및 항산화 활성 검정 결과를 통해 검증된 안정적 미성숙배는 밀 형질전환 기술 개발에 활용될 수 있을 것으로 사료된다.

사군자탕(四君子湯) 및 사군자탕가반묘(四君子湯加斑猫)가 위암세포에 미치는 영향 (Effects of Sagunjatang and Sagunja-tang plus Mylabris phalerata on Human Stomach Cancer Cells)

  • 정우영;류봉하;김진성;윤상협;류기원;신현수
    • 대한한방내과학회지
    • /
    • 제22권4호
    • /
    • pp.579-587
    • /
    • 2001
  • The efficacy of Sagunja-tang and Sagunja-tang plus Mylabris phalerata against the human stomach cancer was examined and molecular biological fight of its actions was studied. In the efficacy test of anti-stomach cancer cells growth using the MTT assay, administration of Sagunja-tang resulted in no significant change of stomach cancer cells growth, with the control group. Administration of Sagunja-tang plus Mylabris phalerata resulted in a decrease of stomach cancer cells growth in proportion to the concentration of mylabris phalerata and time, which was significantly different from the control group(significance recognized when p<0.05). In the test using the apoptosis assay, administration of Sagunja-tang showed an increase in apoptosis of human stomach cancer cells, with no significant difference from the control group. Administrating Sagunja-tang plus Mylabris phalerata showed an increase in apoptosis of stomach cancer cells in proportion to the concentration of mylabris phalerata and time, which was significantly different from the control group(significance recognized when p<0.05). In the test using the quantitative RT-PCR to examine stomach cancer cells growth and revelation of apoptosis related genes, administrating Sagunja-tang plus Mylabris phalerata resulted in a decrease of Bcl-2, an anti-apoptosis gene, in proportiong to concentration. No significant change was examined in the revelation of CDK1, Cdc2, Cyclin D1, PCNA, c-myc, which are genes related to the stomach cancer cells growth, and Bax, Bel-XL, the genes related to apoptosis, and p53. Referring to the results above, Sagunja-tang plus Mylabris phalerata may be considered to have an anti-growth efficacy against human stomach cancer cells, and an inducement efficacy. Therefore, it can be clinically implemented in the human stomach cancer.

  • PDF

간호사의 정맥주사 관리에 대한 인식과 수행에 관한 연구 (A Study on the Nurse's Recognition and Performance in Intravenous Therapy Management)

  • 김명희;김윤화
    • 기본간호학회지
    • /
    • 제5권2호
    • /
    • pp.207-224
    • /
    • 1998
  • The purposes of this study were to identify nurse's recognition and performance and to represent the factors of hindrance in the IV therapy management. The subjects were 420 nurses who worked at five general hospitals in Pusan. Tha data were collected using a questionnaire and the period of data collection was from January 1 to January 31, 1998. The instrument for this study was made by author oneself on the basis of guidelines Simmons et al', CDC' Stanley' and Kurdi' guideline, Cllinical Nurse's Association' that consist of 68 items for 5 fields ; pre-injection, just before-injection, needle-injection, during injection, post-injection field. Cron-bach Alpha coefficient of recognition and performance in the IV therapy management was .93 and .87. The datas were analized by a SPSS program using frequency, percent, paired t-test, t-test and oneway ANOVA. The results obtained were as follows : 1. The mean score of recognition in IV therapy management was significantly higher than that of performance(t=5.86, P<.001). 2. The items of lower than mean score of each fields in performance were the identification of drugs, hands washing, patient teaching about medication, disinfectional methods of the injection site and the rubber stopper in bottle, the use of disposable gloves, mask and eye goggles at the chemotherapy preparation, use of tape and armboard, changing the IV tubing, labeling the dressing over the injection site, observation and recordings of patient's condition after medication and confirmation of the needle length at the needle removal. 3. The factors of hindrance in IV therapy were 'having no time', 'insufficiency of goods', 'unknowing of methods', 'no disadvantage', and 'factors of doctor's doing'. The most important factor was 'have no time', especially item of hands washing. The other factors of hindrance showed high frequency in the following items ; 'insufficiency of goods' in the use of disposable gloves, mask and eye goggles at the chemotherapy preparation, 'unknowing of methods' in the certification of drugs compatibility, 'no disadvantage' in the labeling the dressing over the injection site, and 'factors of doctor's doing' in the changing the subclavian catheter dressing and checking the glucose level during the TPN infusion. In conclusion, there is necessity of educational program which can improve the nurse's knowledge of drugs, disinfection methods, comfort of patient and recordings in IV therapy management and alternative plan which are political and financial aids such as setting up the sink, giving of paper towels and necessary goods in the IV therapy for reducing the factors of hindrance for IV therapy management.

  • PDF

치아우식 예방을 위한 치아미백기의 활용 : 광역동 치료로서의 접근 (Application of Teeth Whitening LED for Prevention of Dental Caries : Antimicrobial Photodynamic Therapy Approach)

  • 박초아;박호원;이주현;서현우;이시영
    • 대한소아치과학회지
    • /
    • 제47권1호
    • /
    • pp.70-77
    • /
    • 2020
  • 이 연구의 목적은 악궁 전반적으로 조사가 가능한 미백 LED를 이용하여 우식원성 Streptococcus mutans에 대한 광역동 치료의 효과를 알아보기 위한 in vitro 연구이다. S. mutans를 각각 두가지 다른 단계의 상태로 배양하였다. Planktonic 상태와 Hydroxyapatite disk와 CDC biofilm reactor를 5일간 사용하여 동적인 바이오필름 상태를 형성하였다. 20 μM 로 희석한 erythrosine을 5분간 전처리한후 가정용 미백기와 진료실 미백기를 사용하여 각 15분씩 광조사를 시행하였다. 실험 종료 후 각 실험군의 Colony Forming Unit를 측정하였으며 공초점 레이저 현미경를 이용하여 각 조건에 따른 광역동 치료 효과를 비교하였다. 실험 결과 S. mutans에 대한 aPDT효과는 control군과 비교시에 각각 플랑크토닉상태와 동적인 바이오필름 상태에서 모두 통계적으로 유의한 광역동 치료 효과가 나타났다(각각 p = 0.001, p = 0.002). 하지만 동적인 바이오필름 상태에서는 플랑크토닉 상태보다 광역동치료에 내성을 지녀 항미생물 효과가 떨어지는 양상이 관찰되었다. 진료실용 미백 LED와 가정용 미백LED는 유사한 항미생물 효과를 나타냈다. 구강악궁 전반적 조사가 가능한 미백용 LED는 우식의 원인이 되는 S. mutans 바이오필름에 유의한 광역동 치료의 효과를 나타냈으며, 이러한 결과는 치아 우식 예방으로의 광역동 치료의 임상적 적용 가능성을 제시한다.

노인 낙상 예방을 위한 운동 가이드라인의 적절성과 적용가능성 (Assessment of Applicability of Guidelines for Fall Prevention Exercise of Elderly People)

  • 이선희;은영;박원숙;신계영;전미양;임경춘;이인옥;최희권;김민주;배선형;최미경;박정하;정재희;이은남;이경숙
    • 근관절건강학회지
    • /
    • 제24권3호
    • /
    • pp.227-237
    • /
    • 2017
  • Purpose: The purpose of this study is to analyze the suitability and applicability of the recommendations for the exercise intervention program in fall prevention guidelines for the elderly. Methods: We searched systematically RISS, KISS, National Assembly Library, KoreaMed, and KM base for Korean guidelines and used OVID-MEDLINE, EMBASE, Cochrane library, Trip database, GIN, NGC, WHO, and CDC for international guidelines including fall prevention exercises for the elderly until August 2016. Results: A total of 11 guidelines were selected as the result of the literature search. After evaluating the quality of guidelines, 9 guidelines were used to analyze the recommendations. A total of 19 recommendations were derived from 9 guidelines. Of 19 recommendations, 12 recommendations were considered to be appropriate and applicable. As a result, we recommend for the elderly to do a single type of balance exercise, strength exercise, aerobic exercise or multiple forms of exercise for 20~30 minutes per a day, 2~3 days or more than 3 days per a week, and consistently for more than 10 weeks. Conclusion: To prevent falls in the elderly, it is important for the elderly to perform a regular balance, strength, or aerobic exercise for 20~30 minutes per a day, 2~3 days per a week.

The Significance of SDF-1α-CXCR4 Axis in in vivo Angiogenic Ability of Human Periodontal Ligament Stem Cells

  • Bae, Yoon-Kyung;Kim, Gee-Hye;Lee, Jae Cheoun;Seo, Byoung-Moo;Joo, Kyeung-Min;Lee, Gene;Nam, Hyun
    • Molecules and Cells
    • /
    • 제40권6호
    • /
    • pp.386-392
    • /
    • 2017
  • Periodontal ligament stem cells (PDLSCs) are multipotent stem cells derived from periodontium and have mesenchymal stem cell (MSC)-like characteristics. Recently, the perivascular region was recognized as the developmental origin of MSCs, which suggests the in vivo angiogenic potential of PDLSCs. In this study, we investigated whether PDLSCs could be a potential source of perivascular cells, which could contribute to in vivo angiogenesis. PDLSCs exhibited typical MSC-like characteristics such as the expression pattern of surface markers (CD29, CD44, CD73, and CD105) and differentiation potentials (osteogenic and adipogenic differentiation). Moreover, PDLSCs expressed perivascular cell markers such as NG2, ${\alpha}-smooth$ muscle actin, platelet-derived growth factor receptor ${\beta}$, and CD146. We conducted an in vivo Matrigel plug assay to confirm the in vivo angiogenic potential of PDLSCs. We could not observe significant vessel-like structures with PDLSCs alone or human umbilical vein endothelial cells (HUVECs) alone at day 7 after injection. However, when PDLSCs and HUVECs were co-injected, there were vessel-like structures containing red blood cells in the lumens, which suggested that anastomosis occurred between newly formed vessels and host circulatory system. To block the $SDF-1{\alpha}$ and CXCR4 axis between PDLSCs and HUVECs, AMD3100, a CXCR4 antagonist, was added into the Matrigel plug. After day 3 and day 7 after injection, there were no significant vessel-like structures. In conclusion, we demonstrated the perivascular characteristics of PDLSCs and their contribution to in vivo angiogenesis, which might imply potential application of PDLSCs into the neovascularization of tissue engineering and vascular diseases.

Proteomic Analysis and the Antimetastatic Effect of N-(4methyl)phenyl-O-(4-methoxy) phenyl-thionocarbamate-Induced Apoptosis in Human Melanoma SK-MEL-28 cells

  • Choi Su-La;Choi Yun-Sil;Kim Young-Kwan;Sung Nack-Do;Kho Chang-Won;Park Byong-Chul;Kim Eun-Mi;Lee Jung-Hyung;Kim Kyung-Mee;Kim Min-Yung;Myung Pyung-Keun
    • Archives of Pharmacal Research
    • /
    • 제29권3호
    • /
    • pp.224-234
    • /
    • 2006
  • We employed human SK-MEL-28 cells as a model system to identify cellular proteins that accompany N-(4-methyl)phenyl-O-(4-methoxy)phenyl-thionocarbamate (MMTC)-induced apoptosis based on a proteomic approach. Cell viability tests revealed that SK-MEL-28 skin cancer cells underwent more cell death than normal HaCaT cells in a dose-dependent manner after treatment with MMTC. Two-dimensional electrophoresis in conjunction with matrixassisted laser desorption/ionization-time of flight (MALDI-TOF) mass spectrometry analysis or computer matching with a protein database further revealed that the MMTC-induced apoptosis is accompanied by increased levels of caspase-1, checkpoint suppressor-1, caspase-4, NF-kB inhibitor, AP-2, c-Jun-N-terminal kinase, melanoma inhibitor, granzyme K, G1/S specific cyclin D3, cystein rich protein, Ras-related protein Rab-37 or Ras-related protein Rab-13, and reduced levels of EMS (oncogene), ATP synthase, tyrosine-phosphatase, Cdc25c, 14-3-3 protein or specific structure of nuclear receptor. The migration suppressing effect of MMTC on SK-MEL-28 cell was tested. MMTC suppressed the metastasis of SK-MEL-8 cells. It was also identified that MMTC had little angiogenic effect because it did not suppress the proliferation of HUVEC cell line. These results suggest that MMTC is a novel chemotherapeutic and metastatic agents against the SK-MEL-28 human melanoma cell line.

반하후박탕(半夏厚朴湯)이 생쥐의 심리적 스트레스에 미치는 영향과 유전자 분석 (Effect of Banhahoobak-tang (Banxiahoupo-tang) Extract (BHTe) on Psychological Stress)

  • 최금애;조수인;김경수;최창원;위통순;양승정;박수연;김경옥
    • 동의신경정신과학회지
    • /
    • 제26권2호
    • /
    • pp.117-130
    • /
    • 2015
  • Objectives: Banhahoobak-tang has been used to treat plum-pit qi, chest and hypochondriac distension, moist or greasy tongue coat, and wiry slow or wiry slippery pulse. It might be used to control coughing and vomiting. We observed that Banhahoobak-tang extract (BHTe) had anti-psychological stress effect. The objective of this study was to determine the effect of BHTe on restoring the transcriptional regulation of genes related to psychological stress. Methods: After giving psychological stress to mice, BHTe was orally administered at 100 mg/kg/day for five days. After extracting whole brain tissue from the mice, the gene expression changes were determined by microarray. Transcription factor binding site (TFBS) analysis showed up- and down-regulated genes related to psychological stress were protected by BHTe and segregated according to the structure of TFBS. We performed text based Pubmed search to select significant target genes involved in psychological stress affected by BHTe. Results: 1. Serum corticosterone level was decreased in the BHTe administered group, although the psychological stress was increased. 2. The BHTe administered group had no significant change in noradrenaline content in brain tissue, but the psychological stress group had decreased level. 3. The BHTe administered group had increased time of staying at open-arm than the psychological stress group. 4. Microarray revealed that TANK and RARA genes were up-regulated genes while AES, CDC42, FOS, NCL, and PVR were down-regulated genes by psychological stress but restored by BHTe.

다년도 자료를 이용한 고혈압 유병률의 지역간 변이 분석 (Analysis on Geographical Variations of the Prevalence of Hypertension Using Multi-year Data)

  • 김유미;조대곤;홍성옥;김은주;강성홍
    • 대한지리학회지
    • /
    • 제49권6호
    • /
    • pp.935-948
    • /
    • 2014
  • 고혈압과 같은 만성 질환의 관리는 국가보건정책에서 중요한 사업이다. 본 연구는 지역사회 특성이 고혈압의 유병률에 어떻게 영향을 주는지를 분석하였다. 분석을 위해 237개 시군구 소지역의 건강상태 및 건강 행태를 포함한 다년간의 자료를 수집하였다. 지표는 2009~2011년 질병관리본부의 지역사회건강조사와 국민건강보험공단 등의 자료를 사용하였다. 지역간 변이 분석을 위해 지리적 가중회귀분석과 의사결정나무 모형을 이용하였다. 연구결과 다년간 자료를 이용하는 것이 단년간 자료를 이용하는 것보다 더 적합도가 높았는데 이것은 대부분의 변수에서 연도별 유의한 차이가 있었기 때문이다. 또 고혈압 유병률은 당뇨병 및 비만 유병률과 양의 관련성이 있었으며 인구밀도와는 음의 상관관계를 보였다. 특히 이러한 요인들의 지역적 변이는 지리적 가중회귀분석 결과에서 더욱 뚜렷하였다. 이상의 결과를 바탕으로 분석한 의사결정나무 모형에서는 고혈압 유병률에 영향을 미치는 중요한 변수가 지역별로 매우 상이하다는 것을 확인할 수 있었다. 지역주민의 건강상태, 건강행태, 사회경제적 요인의 지역간 차이를 규명하는 것은 고혈압 유병률을 감소시키기 위한 지역별 맞춤형 보건정책을 수립하는데 매우 중요하다. 본 연구의 결과는 만성질환 관리를 위한 맞춤형 지역보건정책을 수립하는데 기초자료를 제공할 수 있다는 데 의의가 있다.

  • PDF

Surveillance Evaluation of the National Cancer Registry in Sabah, Malaysia

  • Jeffree, Saffree Mohammad;Mihat, Omar;Lukman, Khamisah Awang;Ibrahim, Mohd Yusof;Kamaludin, Fadzilah;Hassan, Mohd Rohaizat;Kaur, Nirmal;Myint, Than
    • Asian Pacific Journal of Cancer Prevention
    • /
    • 제17권7호
    • /
    • pp.3123-3129
    • /
    • 2016
  • Background: Cancer is the fourth leading cause of death in Sabah Malaysia with a reported age-standardized incidence rate was 104.9 per 100,000 in 2007. The incidence rate depends on non-mandatory notification in the registry. Under-reporting will provide the false picture of cancer control program effectiveness. The present study was to evaluate the performance of the cancer registry system in terms of representativeness, data quality, simplicity, acceptability and timeliness and provision of recommendations for improvement. Materials and Methods: The evaluation was conducted among key informants in the National Cancer Registry (NCR) and reporting facilities from Feb-May 2012 and was based on US CDC guidelines. Representativeness was assessed by matching cancer case in the Health Information System (HIS) and state pathology records with those in NCR. Data quality was measured through case finding and re-abstracting of medical records by independent auditors. The re-abstracting portion comprised 15 data items. Self-administered questionnaires were used to assess simplicity and acceptability. Timeliness was measured from date of diagnosis to date of notification received and data dissemination. Results: Of 4613 cancer cases reported in HIS, 83.3% were matched with cancer registry. In the state pathology centre, 99.8% was notified to registry. Duplication of notification was 3%. Data completeness calculated for 104 samples was 63.4%. Registrars perceived simplicity in coding diagnosis as moderate. Notification process was moderately acceptable. Median duration of interval 1 was 5.7 months. Conclusions: The performances of registry's attributes are fairly positive in terms of simplicity, case reporting sensitivity, and predictive value positive. It is moderately acceptable, data completeness and inflexible. The usefulness of registry is the area of concern to achieve registry objectives. Timeliness of reporting is within international standard, whereas timeliness to data dissemination was longer up to 4 years. Integration between existing HIS and national registration department will improve data quality.