• 대한임상검사과학회지
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• 제47권3호
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• pp.97-104
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• 2015

수면현상은 인간의 삶의 1/3을 차지하는 중요한 생리적 현상으로 인간의 수면은 신체의 기능을 유지하기 위한 중요한 생리적 기능뿐 아니라 수면을 통한 휴식을 통하여 신체 건강을 유지하고 성장을 유지하는 중요한 역할을 한다. 최근의 급격한 산업화와 정보화로 인하여 급격한 사회 생활구조의 변화를 유발하여 성인뿐 아니라 소아에서도 평균수면 시간의 감소와 다양한 스트레스 환경으로 인한 수면의 질적 저하로 인한 다양한 수면 문제가 사회적 문제로 대두되고 있다. 단순히 수면 부족 또는 수면의 질적 저하뿐 아니라 수면 장애, 특히 폐쇄성 수면 무호흡증은 심혈관 질환뿐 아니라 비만, 대사증후군, 심혈관 질환, 뇌혈관 질환 등 의 다양한 만성 질병의 발생과 깊은 연관성이 있는 것으로 보고하고 있다. 특히 이러한 만성질환을 유발하는 핵심기전으로 염증 반응이 관여하고 있는 것으로 알려져 있으며, 따라서 수면 현상과 다양한 수면 장애에 대한 관심이 급격히 증가하고 있는 실정이다. 비록 수면 무호흡증으로 인한 이러한 질병의 이환에 대한 기전은 다양한 요인이 복합적으로 작용하는 것으로 알려져 있지만 핵심 기전으로 알려진 염증반응의 활성화가 병태 생리학적으로 중요한 역할을 하는 것으로 추측하고 있다. 따라서 최근 수면 무호흡증을 낮은 수준의 만성 염증 질환으로 인식되고 있으며, 더불어 비만과 수면무호흡증으로 인한 연관된 질병의 이환을 더욱 증가시키는 것으로 보고되고 있다. 따라서 본 종설에는 수면의 질적 또는 양적 저하뿐 아니라 폐쇄성 수면 무호흡증으로 인한 염증성 반응의 활성화가 인간의 신체 면역 과정 미치는 영향을 중심으로 최근의 연구 결과 및 수면 무호흡증과 비만의 잠재적 상호작용에 대하여 서술하고자 한다

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제32권2호
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• pp.81-93
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• 2006

Obstructive sialadenitis is one of common disease in salivary gland, and most common histologic features are loss of acinar cell and ductal dilatation associated with fibrosis, and infiltration of inflammatory cells. Although many experimental studies has been accomplished for the salivary acinar cell change in obstructive salivary gland disease, studies for myoepithelial cell were deficient. This study is designed for salivary gland tissue change, especially myoepithelial cell when nonspecific chronic sialadenitis or salivary duct injury by duct obstruction or cut can be occurred that is common encounted clinically. After ligation and cutting of submandibular gland of rabbit, groups of aminmal were sacrificed at 1, 2, 4 weeks postoperatively, submandibular gland were removed. The histopathologic evaluation was done with light microscopy. And, with immunohistochemical staining with ${\alpha}$-smooth muscle actin, characteristics of myoepithelial cell were examined. With transmission electron microscopy, ultrastructure of myoepithelial cell were examined for distribution and ultrastructure of myoepithelial cell. The results were obtained as follows: 1. In the histopathologic evaluation, ligation and cutting group of 1 week, linkage of myoepithelial cell associated with acinar atrophy and degeneration were disappeared in both group. 2. More prominent squamous metaplasia was seen in acinar cells of ligation group of 2 weeks experimental rabbit than cutting group. 3. Acinar cells are nearly disappeared in both ligation and cutting group of 4 weeks, and myoepithelial cell also disappeared associated with acinar cell atrophy, and duct-like structure composed by squamous cells by squamous metaplasia in acinar cells were distributed. 4. In immunohistochemical study, both ligation and cutting group ${\alpha}$-SMA distribution were diminished at 1 week experimental rabbits, but myoepithelial cell was more diminished in ligation group than cutting group, which were distributed around cells of squamous metaplasia. 5. Nuclear condensation, chromosome margination, and cytoplasmic vaculoation were appeared in myoepithelial cell of both cutting and ligation group after 1 week with transmission electron microscopy. But degenerative substance were seen in cytoplasm of myoepithelial cell of ligation group of 4 weeks. From the results obtained in this study, atrophy and degeneration of myoepithelial cell was more prominent in duct ligation group than duct cutting group, and myoepithelial cells were seen around cells squamous metaplasia of acinar cell.

• Archives of Pharmacal Research
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• 제25권5호
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• pp.655-663
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• 2002

Liver fibrosis is a prepathological state wherein damaged liver tissues in chronic liver diseases, such as hepatitis, are not repaired to normal tissues, but converted to fibrous tissue. 5-(2-Pyrazinyl)-4-methyl-1,2-dithiol-3-thione (oltipraz), a cancer chemopreventive agent, is effective against a wide variety of chemical carcinogens. Recently, we reported that oltipraz inhibits liver fibrogenesis (Kang et al., 2002). In the present study, the effects of oltipraz in combination with dimethyl-4,4'-dimethoxy-5,6,5',6'-dimethylene dioxybiphenyl-2,2'-dicarboxylate (DDb) on dimethylnitrosamine (DMN)-induced liver fibrogenesis were assessed in rats. Oltipraz (30 mg/kg body weight, po, 3 times per week for 4 weeks) was found to inhibit the increases in plasma ALT, AST and bilirubin by DMN, whereas DDB (30 mg/kg body weight, po, 3 times per week for 4 weeks) attenuated the increases in the plasma ALT and bilirubin. The lowered plasma protein and albumin contents in DMN-treated rats were completely restored by oltipraz, but not by DDB. DDB decreases liver cell injury and inflammation through inhibition of nuclear factor-kB. DMN increased the accumulation of liver collagen, as indicated by the increase in the 4-hydroxyproline content in liver homogenates, which was reduced by treatment with oltipraz, but not by DDB. Given the differential effect between oltipraz and DDB, the potential enhancement of antifibrotic efficacy by the drugs was assessed in the animal model. Despite the minimal effect of DDB on DMN-induced fibrogenesis, DDB (5-25 mg/kg), administered together with oltipraz (25-5 mg/kg), showed an additive protective effect against hepatotoxicity and fibrosis induced by DMN, which was shown by the blood chemistry parameters and histopathological analysis. The adequate composition ratio of oltipraz to DDB was 5:1. These results provide information on the pharmaceutical composition, comprising of oltipraz and DDB as the active components, for the treatment and/or prevention of liver fibrosis and cirrhosis.

• The Journal of Korean Physical Therapy
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• 제12권2호
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• pp.255-265
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• 2000

정상적인 골 조직에서의 성장과는 달리 연부조직에 2차적으로 비정상적인 골 조직이 신생되면서 골화되는 현상을 골화성 근염 또는 화골성 근염이라고 하며, 연부조직에 생긴 골은 가장 안쪽에는 어떤 원인에 의해서 생긴 출혈 또는 괴사 조직의 주위를 섬유모세포가 둘러싸서 생긴 층이 있고, 그 다음으로 골모세포(osteoblasts)로 형성된 미성숙 골조직 충이 있으며, 마지막 주위의 결합조직과 명확한 경계를 이루는 성숙한 골 소주로 구성된 층이 있다. 골화성 근염은 그 원인이 정확히 밝혀지지 않았으나. 혈류의 정체로 인한 저산소증, 비정상적인 칼슘 대사, 미세한 외상의 반복 및 심한 외상, 장기간 고정, 유전적인 원인 등으로 각기 다른 양상의 골화성 근염을 형성할 수 있다. 골화성 근염이라는 단어는 1868년에 Von Dusch에 의해 처음 사용되어 명확한 구분 없이 연부조직에 생긴 비정상 골조직을 일컫는 말로 사용되어져 왔다. 하지만 골화성 근염이라 할지라도 발생 원인과 조직 변화 및 상태 등을 고려한다면 첫째로 선천성 기형과 전신이환을 동반하는 진행성 골화성 근염, 둘째로 신경근과 만성질병, 사지마비, 소아마비, 화상. 다발성 관염 . 파상풍을 가진 환자에게서 발생하는 골화성 근염인 이소성 골화증, 새 번째로 연부조직의 심한 손상 또는 반복적인 손상, 골절, 탈구, 열상 외과적 절개에 대한 부차적인 반응으로 나타나는 외상성 골화성 근염. 네 번째로 위의 세 가지 원인이 아닌 원인으로 발생하는 비외상성 골화성 근염으로 분명히 구분할 수 있다. 때문에 단순히 골화성 근염이란 단어로 연부조직에 생긴 비정상적인 골을 통칭하기보다는 지금까지 언급한 내용을 고려해 보다 구체적인 질환명 즉 골화성 근염이 진행성인지. 이소성인지. 외상성인지. 비외상성인지를 명확히 구분하여 사용하는 것이 바람직하다.

• 한국인구학
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• 제16권2호
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• pp.65-83
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• 1993

The purpose of this study is estimate limits of Korean life expectancy at birth by 'Gompertz growth curse Model', 'Cause-Elimination Model' and Multidimensional models of Senescencee and Mortality'. Data used in Gompertz curve were obtained from all life tables published from 1905 to 1990 in Korea, and life expectancies at birth of eighteen groups were selected at five-year interval in consideration of time-series changes. Data used in Cause-Elimination Model are 'Cause of Death statistics in 1991' published in 1992 by National Bureau of Statistics of Korea and 'life table of 1989' published in 1990 by National Bureau of Statistics, Economic Planning Board of Korea. The materials are all classifiable death data, 119, 253 cases of male and 82, 420 cases of female, which is from 1991 Causes of Death statistics. The cases of death analyzed belong to one of 8 categories; i.e., Infectious and Parasitic Diseases(001-139; with notation of Infectious Diseases), Malignant Neoplasms(140-208), Hypertensive Diseases(401-405), Ischemic Heart Dieases and Diseases of Pulmonary Circulation and Other Forms of Heart Diseases(410-429;with notation of Heart Disease), Cerebrovascular Diseases(430-438), Chronic Liver Diseases and Cirrhosis(571; with notation of Liver Diseases), Injury and Poisoning(800-999) and all other disease. Data used in 'Multidimensional models of senescence and mortality' were life table of 1989 published by National Bureau of statistics, Economic Planning Board of Korea and life table of 1970, 1978-79, 1983, 1985 and 1987. The major findings may be summarised as follows: 1. Estimate equations of Gompertz growth curve using life expectancy at birth during the 1905-1990 period are as the following. Male : y = 88.047697 $\times$ $0.199690^{0.903381x}$ Female : y = 95.632828 $\times$ $0.199690^{0.903381x}$ Limits of life expectancy at birth, which were estimated by Gompertz growth curve, are 88.05 for male and 95.63 for female. 2. The effect on life expectancy at birth eliminationg all causes death is 14.04 years(for male) and 10.86 years(for female). Astonishingly, eliminating the malignant neoplasms increase life expectancy at birth by 2.85 years for male 2.03 years for female in 1991. In table 8 we show the effect on life expectancy at birth of separately eliminating each of the 8 categorical causes of death. The theoretical limit to life expectancy by Cause-Elimination Model is 80.96 for male and 85.82 for female. 3. If the same rate of delay [0.376 year(male), 0.435 year(femable) per calendar year] continued, then life expectancy at birth would reach 74.82(male) years and 84, 10(female) years in 2010. With 14.04-years(male) and 10.86-years(female) effect attributable in 2010 would be 88.86 years(male) and 94.96(femable) years. 4. 'Multidimensional models of senescence and death' permits calculations of the value of the attribution coefficient (B), percent of loss per year of physiologic function. The results of Ro and B during the 1970-1989 period are listed in table 9. Estimate of limit to Korean life expectancy at birth by 'Multidimensional models of senescence and death' is 99.47 years for male and 104.74 years for female in 1989.

• Journal of Periodontal and Implant Science
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• 제30권4호
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• pp.895-913
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• 2000

It is becoming increasingly clear that human gingival fibroblasts(HGF) may play a role in regulating immune responsiveness in inflammatory periodontal lesions. Stimulation of HGF with locally-secreted T cell cytokine $IFN_{\gamma}$ induces human leukocyte antigen class II(HLA II) expression on HGF, which is one of the characteristic feature of professional antigen presenting cells(pAPC). However, $IFN_{\gamma}$-treated HGF and other nonprofessional antigen presenting cells(npAPC) are known to be ineffective or less effective antigen presenter to resting T cells. This study, therefore, was undertaken in an effort to elucidate the differences in expression of cell surface molecules between npAPC in periodontal tissues, such as HGF and periodontal ligament fibroblasts(PDLF), and pAPC such as monocytes/macrophages. Using flow cytometry, the levels of cell surface expression of HLA-D, ICAM-1, LFA-3, and B7-1, which are involved in antigen presentation, were determined in HGF, PDLF and human myelomonocytic cell line THP-1. $IFN_{\gamma}$ clearly induced HLA-D expression on both of fibroblasts and monocytes dose dependently. However, expression level on monocytes were 4 to 5 times higher than that on fibroblasts, and induction rate was faster in monocytes than in fibroblasts. The levels of ICAM-1 expression on fibroblasts and monocytes were enhanced by $IFN_{\gamma}$ in a dose dependent manner. On the other hand, the expression of LFA-3 molecule, which could be detected in fibroblasts and monocytes without cytokine stimulation, was no more enhanced by addition of $IFN_{\gamma}$. B7-1, important costimulatory molecule in T cell activation and proliferation, was not detected on both of fibroblasts and monocytes even when stimulated with $IFN_{\gamma}$, except on monocytes fully differentiated by pretreatment of PMA and treated by $IFN_{\gamma}$. These results suggest that delayed expression of HLA-D and absence of B7-1 on $IFN_{\gamma}$ - treated fibroblasts may at least in part be involved in the ineffectiveness of fibroblasts as primary APC. And it is postulated that although periodontal fibroblasts may not serve as primary APC in normal periodontium, sustained expression of HLA II on ubiquitous fibroblasts in inflammatory lesions may perpetuate immune responses and produce chronic inflammation and tissue injury.

• 대한본초학회지
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• 제30권6호
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• pp.63-68
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• 2015

Objectives : Gastric lesions affect many people around the world and their development are results of the imbalance between destructive and protective factors in the gastric mucosa. Lycium chinense has been widely used as a traditional Korean medicine, it was recently reported that they have potent anti-inflammatory effects in chronic hepatitis models. Therefore, this study aimed to investigate the anti-inflammatory activity of Lycium chinense extract (LCE) on HCl-Ethanol induced gastric lesion mice.Methods : The ICR mice were divided randomly into five groups of six animals each. Group A was normal mice, and group B was treated orally with 0.5 ml 150 mM HCl-60% Ethanol. Mice in group C and D were pre-treatment of LCE (100 mg/kg and 200 mg/kg bodyweight, p.o before HCl/ethanol treatment) and group E was orally administered sucralfate (10 mg/kg).Results : 150mM HCl/60% ethanol-induced gastric mucosal injury mice were ameliorated mucosal damage upon histological evaluation by treatment of LCE. Pre-treatment of LCE attenuated reactive oxidative species (ROS) and produces peroxynitrite (ONOO^-) in stomach tissues. As results of stomach protein analyses, LCE effectively reduce inflammatory-related factors such as cyclooxygenase-2 (COX-2), tumor necrosis factor alpha (TNF-α), inducible nitric oxide synthase (iNOS) and interleukin-6 (IL-6) in gastric lesion mice. In addition, nuclear factor kappa B (NF-κB) and inhibitor of phosphorylation of nuclear factor kappa B (p-IκB) were down-regulated in LCE-administrated gastric lesion mice.Conclusions : Our discovery supports that the therapeutic activity of LCE ameliorate the development of gastric lesion via suppressing the oxidative stress and gastric partial inflammation induced by 150 mM HCl/60% ethanol.

• Archives of Reconstructive Microsurgery
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• 제19권2호
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• pp.97-100
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• 2010

Purpose: Epidermolysis bullosa is a rare genetic disease, characterized by the presence of extremely fragile skin and formation of recurrent blister resulting from even a minor mechanical injury. Squamous cell carcinoma (SCC) is recognized as a complication of the chronic scarring associated with dystrophic epidermolysis bullosa (DEB). When a soft tissue defect happens in a patient with epidermolysis bullosa, it is difficult to cover it with a skin graft or a flap. We describe the successful use of a pedicled deep inferior epigastric perforator flap for the reconstruction of SCC associated with DEB in the groin. Methods: A 29-year-old man diagnosed with DEB at birth sustained an ulcer increasing in the right groin for the last 7 months. Under general anesthesia, the mass lesion and lymph nodes were removed and the resulting defect was covered with a pedicled deep inferior epigastric perforator flap. Results: The flap survived completely and his postoperative course was uneventful. Histopathological examination revealed a SCC in the right groin and malignant tumor cells in the removed lymph nodes as well. Additional positron emission tomogram showed a malignant lesion in the ileocecal area with regional lymph node metastasis. The patient was referred to an oncologist for chemotheraphy, but the patient refused to take it. During a 4-month follow-up period, there was no recurrence in the right groin. Conclusion: We suggest that perforator flaps can be considered as a reliable alternative for the reconstruction of soft tissue defects in a patient with DEB.

• 한국수산과학회지
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• 제32권5호
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• pp.593-600
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• 1999

우리나라 전 연안의 조간대에 분포하고 있는 총알고둥을 대상으로 생존, 성장, 호흡, 배설에 미치는 유기주석, 수은 및 카드뮴의 만성저해성 연구를 통하여, 오염으로 인한 독성과 그에 따른 내성등을 생물학적 방법을 이용하여 조사하였다. 수온 $23^{\circ}C$에서 80일 동안 TBTCl, Hg 및 Cd의 각 실험농도에 폭로시킨 총알고둥의 생존율은 TBTCl, 0.9$\mu$g/$\ell$에서 $80\%$, Hg, 200$\mu$g/$\ell$에서 $25\%$, 그리고 Cd, 100$\mu$g/$\ell$에서는 $45\%$였다. 각 실험농도에 폭로된 총알고둥의 일일 평균 성장률은 대조구에서 0.023mm/day였으며, TBTCl의 경우는 0.1 $\mu$g/$\ell$에서 0.019mm/day로 $17.39\%$, 0.9 $\mu$g/$\ell$에서는 0.014 mm/day로 $39.13\%$ 감소하였으며, Hg의 경우는 50 $\mu$g/$\ell$에서 0.015 mm/day로 $34.78\%$, 200 $\mu$g/$\ell$에서는 0.008mm/day으로 $65.22\%$ 감소하였다. 그리고 Cd의 경우는 5$\mu$g/$\ell$에서 0.017 mm/day로 $26.09\%$, 100 $\mu$g/$\ell$에서는 0.008 mm/day으로 $65.22\%$ 감소하였다. TBTCl, Hg 그리고 Cd의 각 저해농도에 폭로시킨 총알고둥의 호흡 및 질소 배설률은 폭로시간의 경과에 따라 대체로 폭로전반에는 감소하다가 다시 증가하는 경향을 보였다. 각 오염원에 따른 조직학적 변화양상은 TBTCl에서 아가미, Hg에서는 소화관 그리고 Cd의 경우에는 발 근육층부분에서 가장 크게 나타났다.

• The Korean Journal of Physiology and Pharmacology
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• 제23권2호
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• pp.151-159
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• 2019

Pruritus (itching) is classically defined as an unpleasant cutaneous sensation that leads to scratching behavior. Although the scientific criteria of classification for pruritic diseases are not clear, it can be divided as acute or chronic by duration of symptoms. In this study, we investigated whether skin injury caused by chemical (contact hypersensitivity, CHS) or physical (skin-scratching stimulation, SSS) stimuli causes initial pruritus and analyzed gene expression profiles systemically to determine how changes in skin gene expression in the affected area are related to itching. In both CHS and SSS, we ranked the Gene Ontology Biological Process terms that are generally associated with changes. The factors associated with upregulation were keratinization, inflammatory response and neutrophil chemotaxis. The Kyoto Encyclopedia of Genes and Genomes pathway shows the difference of immune system, cell growth and death, signaling molecules and interactions, and signal transduction pathways. Il1a, Il1b and Il22 were upregulated in the CHS, and Tnf, Tnfrsf1b, Il1b, Il1r1 and Il6 were upregulated in the SSS. Trpc1 channel genes were observed in representative itching-related candidate genes. By comparing and analyzing RNA-sequencing data obtained from the skin tissue of each animal model in these characteristic stages, it is possible to find useful diagnostic markers for the treatment of itching, to diagnose itching causes and to apply customized treatment.