• 한국대기환경학회지
• /
• 제4권1호
• /
• pp.58-70
• /
• 1988

대기오염이 건강에 미치는 영향의 유무를 알아보고 그 영향의 정도를 반영해 줄 수 있는 지표의 개발을 목적으로 우리나라 전역을 서울, 대도시, 중소도시, 농어촌 등 4개 지역으로 구분하고 의료보험대상자 3,922,027명에 대한 호흡기질환 외래수진률을 지역별로 비교해 보았다. 조사대상 질환군으로서는 다음 7가지의 호흡기질환을 채택하기로 하였다. 1) 결핵성 질환 2) 호흡기 및 흉곽내장기의 악성신생물 3) 급성호흡기 감염 4) 폐염 및 인플루엔자 5) 만성폐색성 폐질환 및 유사증 6) 진폐증 및 외인성의 기타 폐질환 7) 상기도의 기타질환 상기 질환으로 인한 외래수진에 관한 정보는 1983년 1월 1일 부터 12월 31일 사이에 제출된 보험의료비 청구서에 나타난 자료를 이용하여 수집하였으며, 그 분석을 통해 다음과 같은 결론을 얻었다. 1) 지역별 연간종합외래수진률을 비교해 본 결과 농촌지역에서 가장 낮은 수준을 나타내고 있는 질환은 조사대상 7개 호흡기질환군중 다음 4개 질환군이 해당되고 있다. (1) 결핵질환 (2) 호흡기 및 흉곽내장기의 악성 신생물 (3) 상기도의 기타질환 (4) 진폐증 및 외인성의 기타 폐질환 한편 이 종합외래수진률이 가장 높은 지역은 대도시 지역으로서 5가지 호흡기질환군의 수진률이 다른 지역에 비해 훨씬 높게 나타나 있다. 이와같은 결과는 의료보험환자들의 "외래수진률"을 이용하여 대기오염과 건강과의 관련도를 측정할 수 있는 "대기오염 - 건강" 지표의 개발이 가능할 것임을 뒷받침해 주고 있다. 그러나 가장 오염도가 높다고 예상되는 서울지역에서의 외래수진율이 대도시 지역보다 높지 않다는 것은 오염도와 외래수진률과의 관계에서 일관성있는 결과를 보여주지 못하고 있음을 뜻하는데 과거의 자료로서는 외래수진률만 가지고 대기오염과 건강과의 관계를 표시해주는 지표로 삼기에는 미흡함을 알 수 있다. 2) 월별 외래수진률의 경향을 보면 거의 모든 호흡기질환군에서 계절적인 특이성을 나타내지 못하고 있다. 단 이 경우도 농촌지역이 연중 계속 최하위를 유지하고 있는 질환군이 7개 대상질환군 중에 4개군에 달하고 있다. 3) 보험환자들의 "외래수진률"은 아직은 미흡한 점이 있으나 앞으로 "대기오염 - 건강" 지표로서 개발 활용할 가치는 있다고 볼 수 있으며 서울, 대도시, 중소도시, 농어촌 등 4개 지역에 대한 월별 외래 수진률을 다음 4가지 질환군에 대하여 계속 관측하여 그 경향을 분석할 것을 권장한다. (1) 호흡기 및 흉곽내장기의 악성 신생물 (ICD. 160-165) (2) 급성호흡기 감영 (ICD. 460-466) (3) 폐염 및 인플루엔자 (ICD. 480-487) (4) 만성폐색성 폐질환 및 유사증 (ICD. 490-496) 4) 외래수진률은 진료방식 즉, 투약기간의 장단등으로 인한 통원 (通院) 빈도 차이의 영향을 받게 되므로 지역별 병 $\cdot$ 의원의 보험환자 진료방식에 대한 비교검토가 요구된다.

• 대한물리치료과학회지
• /
• 제13권2호
• /
• pp.99-119
• /
• 2006

Endothelin (ET) is a 21 amino acid peptide with multifunctional effects on the vasculature as well as a variety of other cell types such as respiratory, gastrointestinal, urogenital, endocrine, central nervous systems, and others. Endothelin has emerged as a modulator by autocrine and paracrine actions for many cellular activities, including vasoconstriction, cell proliferation, hormone production, neurotransmitter and/or neuromodulator. The endothelin family consists of three closely related peptides, ET-1, ET-2, and ET-3 derived from separate genes, such as chromosome 6, 1, and 20, respectively. ET-1 is the predominant isoform produced in the cardiovascular system and about which most is known. Endothelin receptors are seven-transmembrane GTP-binding protein-coupled receptors, which are classified into endothelin-A (ETA) and endothelin-B (ETB) receptors. Interestingly, recent evidence is accumulating to suggest that ET -1 may contribute to a variety of pain states such as allodynia and hyperalgesia in animals and humans. Therefore, in this review the biological characteristics and contraction-related mechanism of endothelin-1 in mammalian cells will be summarized. Especially, we focus on multifunctional roles for ET-1 in noxious stimulation-induced pain for the study of pain specialized physical therapy.

• 동의생리병리학회지
• /
• 제23권3호
• /
• pp.554-561
• /
• 2009

Soyangin-Hyeongbangpaedok-san(SHBPDS) is a herbal formula used for the common cold or upper respiratory illness. In order to investigate the effect of SHBPDS, mice were orally administered with SHBPDS alcohol extract for 7 days followed by intravenous anti-CD3 injection. In addition, splenocytes and CD4 T cells were cultured with SHBPDS in response to anti-CD3 in vitro and cytokines and transcription factors were evaluated. In vivo treatment with SHBPDS significantly augmented the expressions of the percentage of CD4 T cells and CD 69, an indicator of early T cell activation. Serum levels of IL-4 were significantly increased but those of IFN-${\gamma}$ and IL-2 did not reach statistical significance. The expressions of IFN-${\gamma}$ and T-bet mRNA were significantly downregulated in SHBPDS treated mice while those of IL-4 and C-Maf were significantly upregulated. In vitro stimulation of splenocytes and CD4 T cells by SHBPDS resulted in a reduction in IFN-${\gamma}$ secretion and STAT4 activity. The IL-4 releases from both cells were slightly reduced, but STAT6 activity was rather increased. In conclusion, SHBPDS exerted an inhibition in the expression of IFN-${\gamma}$, T-bet and STAT4 while IL-4, C-Maf and STAT6 were increased. Further studies are required to examine its pharmacological effects using more appropriate animal experiments.

• Journal of Chest Surgery
• /
• 제27권3호
• /
• pp.177-186
• /
• 1994

Pentastarch is a hydroxyethyl starch similar to hetastarch, but lower average molecular weight and fewer hydroxyethyl groups which result in enhanced enzymatic hydrolysis and faster renal elimination.This report was performed to compare the clinical efficacy and safety of 10 % pentastarch[Pentaspan , group I] for plasma volume expansion after open heart surgery with that of 5% albumin[Plasmanate, group II]. There were no statistically significant differences between the group I [n=18] and group II [n:19] in the preoperative parameters [age, sex, body weight] and operative parameters[bypass time, aorta cross clamping time]. During the first 24 hours after arrival of the patient in the surgical intensive care unit, colloid solution [500--1000 ml] was infused to maintain left atrial pressure of more than 8 mmHg, or cardiac index of 2.0 L/min/M2 of more. In results, there were 3 complications of hypotension immediately after infusion of 5 % albumin solution and 2 among the 3 patients were excluded for the study. However there was no complication after infusion of 10 % pentastarch solution. Hemodynamic responses to infusion was similar for both groups, although in group I a greater increase in both left atrial pressure[mean 1.8 versus 0.7 mmHg, p< 0.05] and right atrial pressure [mean 2.2 versus 1.7 mmHg, p < 0.05] was observed during infusion of the first 500 ml. There were no significant differences in any of the measured respiratory parameters[PaO2, intrapulmonary shunt, and effective lung compliance]. Homodilution with colloid significantly reduced hemoglobin [mean 1.2 versus 0.8 gm/dl], and serum protein and albumin level[total protein;4.8$\pm$ 0.5 versus 5.2 $\pm$0.5 gm/dl, p < 0.05: albumin: 3.2 $\pm$0.4 versus 3.6 $\pm$0.6 gm/dl, p < 0.05] by 6:00 AM on 1 day postoperatively, however there were no significant differences on 7 day postoperatively. The mean serum colloid osmotic pressure and osmolarity was similar in both group.There were no abnormal findings of liver function and kidney function in all the patients. There were no significant between-group differences in bleeding time, platelets, prothrombin time, activated partial thromboplastin time and amount of chest tube output measured on 1st and 7th postoperative day. These findings demonstrated that 10% pentastarch is more effective and safe for plasma volume expension than 5 % albumin solution with no adverse effects on coagulation. Also 10 % pentastarch is less expensive than 5 % albumin and it would appeare to be a reasonable first choice for plasma volume expansion.

• 한국화재소방학회논문지
• /
• 제31권6호
• /
• pp.8-15
• /
• 2017

화재발생 시에 대부분의 인명 피해는 연기에 의해 발생되는데, 최근 건축 내장재에서 차지하는 플라스틱의 양이 많아지며 발생되는 연기의 유독성이 점차적으로 증가되고 있다. 연기에 의한 인체피해의 상당부분은 흡입연기의 폐침전과 관련이 있으며, 연기입자의 크기분포는 폐침전 특성에 직접적인 영향을 미친다. 따라서 플라스틱 종류에 따른 연기입자의 크기별 발생량 검토는 폐침전에 의한 인체피해 연구에 필수적으로 요구된다. 최근의 목재와 폴리프로필렌(PP)에 대한 연기입자의 발생특성 연구에서 PP의 연기입자 크기분포 특성이 몇 가지 측면에서 목재와는 확연히 다르게 나타났다. 이에 따라, 본 연구에서는 다른 플라스틱들도 연기입자 크기분포에서 PP와 같은 특성을 보이는지 알아보기 위해서 대표적인 4가지 플라스틱(LDPE, PA66, PMMA, PVC)에 대하여 연기입자 크기분포 측정실험을 수행하였다. 특정 조건에서 연소생성물을 균일하게 생성하고 분석하기 위하여 ISO/TS 19700 기준에 따른 등속튜브연소로를 이용하여 연소로의 온도와 산소공급량에 따라 다양한 화재조건에서 연기입자를 균일하게 발생시키고, 정전저압 임팩터를 사용하여 연기입자의 크기에 따른 개수농도를 실시간으로 측정하였다. 실험 결과 4가지 플라스틱의 연기입자 크기분포 특성은 여러 측면에서 PP와 유사하며 목재와는 확연히 다르게 나타났다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
• /
• 제46권5호
• /
• pp.341-347
• /
• 2020

Objectives: Oral squamous cell carcinoma (OSCC) is one of the most common types of head and neck cancer. MicroRNAs, as new biomarkers, are recommended for diagnosis and treatment of different types of cancers. Bevacizumab, sold under the trade name Avastin, is a humanized whole monoclonal antibody that targets and blocks VEGF-A (vascular endothelial growth factor A; angiogenesis) and oncogenic signaling pathways. Materials and Methods: This study comprised 50 cases suffering from OSCC and 50 healthy participants. Peripheral blood samples were collected in glass test tubes, and RNA extraction was started immediately. Expression levels of miR-155, miR-191, and miR-494 biomarkers in the peripheral blood of OSCC-affected individuals and healthy volunteers in vivo were evaluated using real-time PCR. The influence of Avastin on the expression levels of the aforementioned biomarkers in vitro and in the HN5 cell line was also investigated. Results: Expression levels of miR-155, miR-191, and miR-494 in the peripheral blood of individuals affected by OSCC were higher than in those who were healthy. Moreover, Avastin at a concentration of 400 μM caused a decrease in the expression levels of the three biomarkers and a 1.5-fold, 3.5-fold, and 4-fold increase in apoptosis in the test samples compared to the controls in the HN5 cell line after 24, 48, and 72 hours, respectively. Conclusion: The findings of this study demonstrate that overexpression of miR-155, miR-191, and miR-494 is associated with OSCC, and Avastin is able to regulate and downregulate the expression of those biomarkers and increase apoptosis in cancerous cells in the HN5 cell line.

• 한국자기학회지
• /
• 제25권6호
• /
• pp.208-218
• /
• 2015

최근 방사선치료는 치료 장비에 있어 고도화되고 방법 또한 다양해지고 있다. 기존의 방사선치료의 경우 다엽콜리메이터의 두께가 치료계획에 있어서 중요한 요인으로 생각되었지만 세기변조방사선치료의 개념에서는 그 중요성이 다소 떨어진다. 이 시점에서 보다 정밀한 치료를 시행할 때 다엽콜리메이터와 더불어 어떤 방식으로 치료계획을 세우고 치료하느냐를 고민할 시점이 되었다고 본다. 따라서 본 연구는 5 mm 다엽콜리메이터를 적용한 용적변조회전조사치료(Volumetric modulated arc therapy, VMAT) 치료계획과 2.5 mm 다엽콜리메이터를 적용한 입체조형동적회전조사치료(Dynamic conformal arc therapy, DCAT) 치료계획을 여러 가지 모양을 지닌 가상의 표적용적에 따라 나타나는 치료선량분포를 확인하고 실제 환자치료에 적용하여 보다 효율적인 방사선치료를 구상하는데 그 목적이 있다. 본 연구의 목적은 치료계획 시 전산화 단층촬영영상과 자기공명영상과의 융합을 통해 영상의 재현성 및 유용성을 평가하고 획득한 영상에서 타겟 선량을 비교, 분석하고자 자체개발한 팬톰을 사용하여 수행하였다. 전산화단층촬영을 한 팬톰의 영상과 각기 다른 자장의 세기로 촬영한 팬톰의 자기공명영상에서 팬톰 내에 존재하는 작은 홀의 크기 및 용적의 재현성을 비교하고, 임의의 타겟에서 선량 변화를 비교, 분석하였다.

• 한국식품저장유통학회지
• /
• 제8권4호
• /
• pp.367-373
• /
• 2001

큰느타리버섯의 신선도 연장을 위해 PVC wrap과 20$\mu\textrm{m}$ Polyolefin계열의 PD941 필름을 이용하여 밀봉한 후 저장온도 $0^{\circ}C$, 5$^{\circ}C$, 1$0^{\circ}C$에서 저장하면서 품질변화를 조사하였다. 큰느타리버섯은 저장온도가 높을수록 호흡속도가 빠르며, 중량감소율은 저장온도 $0^{\circ}C$, 5$^{\circ}C$, 1$0^{\circ}C$에서 Polyolefin계열의 PD941 밀봉포장이 PVC wrap 포장보다 중량감소가 훨씬 적었다. 포장내 가스농도중 $O_2$농도는 PVC wrap포장과 Polyolefin계열의 PD941 밀봉포장이 $0^{\circ}C$, 5$^{\circ}C$, 1$0^{\circ}C$에서 1%이하로, $CO_2$농도는 6~10%를 나타내었다. Hardness, Hunter L값, Hunter b값, 관능평가 결과를 고려할 때 Polyolefin계열의PD941 밀봉포장이 PVC wrap 포장에 비해서 우수하였고, 큰느타리버섯의 저장가능기간은 PVC wrap 포장의 경우 $0^{\circ}C$에서 50일, 5$^{\circ}C$에서 28일, 1$0^{\circ}C$ 12일이 가능하고, Polyoefin계열의 PD941 밀봉포장은 $0^{\circ}C$에서 50일, 5$^{\circ}C$에서 32일, 1$0^{\circ}C$에서 21일이 가능하였다.

• The Korean Journal of Physiology and Pharmacology
• /
• 제19권3호
• /
• pp.283-289
• /
• 2015

This study surveys the improvement characteristics in old-aged muscular mitochondria by bio-active materials coated fabric (BMCF). To observe the effects, the fabric (10 and 30%) was worn to old-aged rat then the oxygen consumption efficiency and copy numbers of mitochondria, and mRNA expression of apoptosis- and mitophagy-related genes were verified. By wearing the BMCF, the oxidative respiration significantly increased when using the 30% materials coated fabric. The mitochondrial DNA copy number significantly decreased and subsequently recovered in a dose-dependent manner. The respiratory control ratio to mitochondrial DNA copy number showed a dose-dependent increment. As times passed, Bax, caspase 9, PGC-$1{\alpha}$ and ${\beta}$-actin increased, and Bcl-2 decreased in a dose-dependent manner. However, the BMCF can be seen to have had no effect on Fas receptor. PINK1 expression did not change considerably and was inclined to decrease in control group, but the expression was down-regulated then subsequently increased with the use of the BMCF in a dose-dependent manner. Caspase 3 increased and subsequently decreased in a dose-dependent manner. These results suggest that the BMCF invigorates mitophagy and improves mitochondrial oxidative respiration in skeletal muscle, and in early stage of apoptosis induced by the BMCF is not related to extrinsic death-receptor mediated but mitochondria-mediated signaling pathway.

• International Journal of Oral Biology
• /
• 제42권4호
• /
• pp.183-190
• /
• 2017

Ficus carica L. (common fig), one of the first plants cultivated by humans, originated in the Mediterranean basin and currently grows worldwide, including southwest Asia and South Korea. It has been used as a traditional medicine for treatment of metabolic, cardiovascular, and respiratory diseases as well as hemorrhoids and skin infections. Its pharmacological properties have recently been studied in detail, but research on the anti-cancer effect of its latex has been only been studied on a limited basis on several cell lines, such prostate cancer, breast cancer, and leukemia. In this study, we investigated the anti-cancer activity of the latex of Ficus carica L.and its underlying mechanism in FaDu human hypopharynx squamous carcinoma cells. (See Ed. note above) We confirmed through SDS-PAGE analysis and gelatinolytic activity analysis that the latex of Ficus carica contains cysteine protease ficin. Our data showed that the latex inhibited cell growth in a dose-dependent manner. In addition, the latex treatment markedly induced apoptosis in FaDu cells as determined by FACS analysis, elevated expression level of cleaved caspase-9, -3 and PARP (poly (ADP-ribose) polymerase), and. increased the expression of Bax (pro-apoptotic factor) while decreasing the expression of Bcl-2 (anti-apoptotic factor). Taken together, these results suggested that latex containing the ficin inhibited cell growth and induced apoptosis by caspase and the Bcl-2 family signaling pathway in FaDu human hypopharynx squamous carcinoma cells. These findings point to the potential of latex of Ficus carica to provide a novel chemotherapeutic drug due to its growth inhibition effects and induction of apoptosis in human oral cancer cells.