• Title/Summary/Keyword: epithelial

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Inhibitory Effect of Luteolin on $TNF-{\alpha}-Stimulated$ IL-8 Secretion from Intestinal Epithelial Cells

  • Kim, Jin-Ah;Kang, Ok-Hwa;Baek, Ok-Seon;Choi, Suck-Chei;Kim, Tae-Hyun;Seo, Geom-Seog;Nah, Yong-Ho;Lee, Young-Mi
    • Proceedings of the PSK Conference
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    • 2002.10a
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    • pp.256.2-257
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    • 2002
  • Intestinal epithelial cells can produce cytokines and chemokines that play an important role in the mucosal immune response. Regulation of this secretion is important to prevent inflammatory tissue damage. Lonicera japonica have been shown to inhibit inflammation. We tested the effect of luteolin, a major ingredient of Lonicera japonica, on TNF-${\alpha}$-stimulated IL-8 secretion from lntestinal epithelial cells. (omitted)

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Proteomic analysis of proteins Secreted by Human Bronchial Epithelial Cells in Response to Pathogenic Bacterial Infections

  • Oh, Mi-Jung;Park, Mi-Ja;Lee, Ji-Yeon;Park, Ji-Woo;Lee, Na-Gyong;Jung, Sung-Yun;Kim, Dae-Kyong
    • Proceedings of the PSK Conference
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    • 2003.04a
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    • pp.220-221
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    • 2003
  • Bacterial infection is a very complex process in which both pathogens and host cells play crucial roles, and the host cells undergo drastic changes in their physiology, releasing various proteins in response to the pathogenic infection. Human airway epithelial surface serves as a first line of defense against microorganisms and the external environment. It is well known that bronchial epithelial cells secrete various chemokines and cytokines such as IL-6 and IL-8 to cope with various respiratory pathogens. (omitted)

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The Calcifying Epithelial Odontogenic Tumor: Report of a Case (석회화 상피성 치성종양의 증례보고)

  • Lee Seung-Hyun;Hwang Eui-Hwan;Lee Sang-Rae;Hosaka Mitsuo
    • Journal of Korean Academy of Oral and Maxillofacial Radiology
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    • v.28 no.2
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    • pp.521-537
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    • 1998
  • The calcifying epithelial odontogenic tumor is a rare benign odontogenic neoplasm which was first described by Pindborg in 1955 and accounts for less than 1% of all odontogenic tumors. The tumor occurs primarily in the molar-premolar region of the mandible, and 52% of cases are associated with an unerupted tooth. The clinical feature is most commonly a slow-growing painless swelling. The tumor may show considerable radiographic variation and usually characteristic histopathologic features. In this study, we report a case of the calcifying epithelial odontogenic tumor on the left mandibular body and ramus area in a 28-year-old male with a brief review of the concerned literatures.

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Solid and Papillary Epithelial Neoplasm of the Pancreas in Children (소아에서의 췌장의 고형유두상 상피성 종양)

  • Yoon, Hyuk-Jin;Park, Jin-Young
    • Advances in pediatric surgery
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    • v.12 no.1
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    • pp.32-40
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    • 2006
  • Four children with solid and papillary epithelial neoplasm of the pancreas are reported. Three were girls. Mean age at operation was 12 years and 7 months (10-13 years). Clinical presentation included nausea, vomiting, and apalpable mass. One had hemoperitoneum due to tumor rupture. In two cases, tumors were in the body of the pancreas, and one the body and tail, and in one,the tail. Mean diameter of the tumors was 10.8 cm (8-15cm). Surgical procedures were distal pancreatectomy and splenectomy in 2 cases, distal pancreatectomy in one, and subtotal pancreatectomy and splenectomy in one. Mean follow-up period was 61 months (6-121 months). Three patients are still alive without any recurrence. However, in the one case of ruptured tumor, portal vein thrombosis and liver metastasis developed after subtotal pancreatectomy and splenectomy during the course of postoperative adjuvant chemotherapy.

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Cytochemical and Immunocytochemical Study on the Cellulase Activity in the Accessory Glands of the Digestive System of the Oriental Land Snail, Nesiohelix

  • Jeong, Kye-Heon;Lee, Young-Seok;Shim, Yun-Bo
    • The Korean Journal of Malacology
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    • v.15 no.2
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    • pp.81-92
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    • 1999
  • The histochemical, cytochemical, and immunocytochemical investigations were conducted to find out the cellulase activity in the accessory glands of the digestive system of the oriental land snail Nesiohelix samarangae under the LM, SEM, and TEM. The cellulase activity was shown in the epithelium of th digestive gland by labelling with the immunogold (protein-A gold) particles. The epithelial cells showing the cellulase activity were Type 1 and Type 3 cells out of five types of the epithelial cells of the digestive gland. None of epithelial cells of the mucus gland and the salivary gland and the salivary gland were not labeled with the immunogold particles.

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Genomic and Proteomic Profiling of the Cadmium Cytotoxic Response in Human Lung Epithelial Cells

  • Choi, Kwang-Man;Youn, Hyung-Sun;Lee, Mi-Young
    • Molecular & Cellular Toxicology
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    • v.5 no.3
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    • pp.198-206
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    • 2009
  • Microarray and proteomic expression patterns in response to cadmium exposure were analyzed in human lung epithelial cells. Among 35,000 genes analyzed by cDNA microarray, 228 genes were up-regulated and 99 genes were down-regulated, based on a fold change cut-off value of ${\geq}2$. Combining two-dimensional gel electrophoresis and matrix-assisted laser desorption/ionization-time-of-flight-mass spectrometry (MALDI-ToF-MS), 25 of 629 protein spots showed fold changes in expression ${\geq}2$ (17 up-regulated, 8 down-regulated). After comparing the cDNA microarray and proteomic analyses, only transglutaminase 2, translation elongation factor 1 alpha 1, and glyceraldehyde-3-phosphate dehydrogenase showed overlapping signals in the cDNA microarray and proteomic analyses, whereas the remaining differentially expressed proteins showed large discrepancies with respect to mRNA expression.

imc-415 Gene Expression in the Proliferation and Cell Death Phases of Mammary Epithelial Cells

  • Ha, S.H.;Lee, D.Y.;Kho, Y.J.;Baik, M.G.;Choi, Y.J.
    • Asian-Australasian Journal of Animal Sciences
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    • v.13 no.9
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    • pp.1201-1204
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    • 2000
  • We examined expression patterns of imc-415 gene in mammary gland and in HC11 mammary epithelial cells in culture. mRNA levels of imc-415 gene were higher at pregnancy and involution stages of mouse mammary gland compared with lactation period. Expression of imc-415 gene was induced with serum starvation or treatment with Fas monoclonal antibody in HC11 mammary epithelial cells in culture.

Identification of Serum MicroRNA-21 as a Biomarker for Early Detection and Prognosis in Human Epithelial Ovarian Cancer

  • Xu, Yun-Zhao;Xi, Qing-Hua;Ge, Wen-Liang;Zhang, Xiao-Qian
    • Asian Pacific Journal of Cancer Prevention
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    • v.14 no.2
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    • pp.1057-1060
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    • 2013
  • Recent investigations have confirmed up-regulation of serum miR-21 and its diagnostic and prognostic value in several human malignancies. In this study, we examined serum miR-21 levels in epithelial ovarian cancer (EOC) patients, and explored its association with clinicopathological factors and prognosis. The results showed significantly higher serum miR-21 levels in EOC patients than in healthy controls. In addition, increased serum miR-21 expression was correlated with advanced FIGO stage, high tumor grade, and shortened overall survival. These findings indicate that serum miR-21 may serve as a novel diagnostic and prognostic marker, and be used as a therapeutic target for the treatment of EOC.

Weissella confusa Strain PL9001 Inhibits Growth and Adherence of Genitourinary Pathogens

  • Lee, Yeon-Hee
    • Journal of Microbiology and Biotechnology
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    • v.14 no.4
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    • pp.680-685
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    • 2004
  • The capability of lactic acid bacteria (LABs) to adhere to intestinal epithelial cells and vaginal epithelial cells is an important factor in the formation of a barrier to prevent the colonization of pathogenic bacteria. In addition, the ability to coaggregate with pathogens and production of antimicrobial agents also allow LABs to fight against pathogens. In this work, Weissella confusa PL9001 was tested for its ability to inhibit the growth and adherence of genitourinary pathogens, including Candida albicans, Escherichia coli, Staphylococcus aureus, and vancomycin-resistant Enterococcus faecium (VRE), isolated from the urine of hospitalized female patients. W. confusa PL9001 was found to coaggregate with the four pathogens, as observed with a light microscope and scanning electron microscope. In competition, exclusion, and displacement tests, the adherence of the pathogens to T24 bladder epithelial cells was also inhibited by W. confusa PL9001. Accordingly, these results suggest that W. confusa PL9001 is potentially useful for both preventive and therapeutic treatment of genitourinary infections.

Ultrastructural Study of Tentacular Pigment Cells in the Chinese Mystery Snail, Cipangopazudina chinensis mazleata Reeve (논우렁이(Cipangopaludina chinensis malleuta Reeve) 촉수 색소세후의 징세횡조에 관한 연구)

  • 송용직;문영진김우갑김창환
    • The Korean Journal of Zoology
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    • v.30 no.3
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    • pp.292-300
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    • 1987
  • The ultrastructure of the tentacular pigment cells and the origin of the pigment granules in the Chinese mystery snail, Cipangopaludina chinensis malleata Reeve, are studied with electron microscope. Tentacular pigment cells of the Enail are the melanophores which contain electron dense melanosomes(melanin pigment granules) . Melanophores are distributed among the connective tissues but otter kind of dermal chromatephores are not observed. The epidermal melanin units are observed in the epithelial tissues of the tentacles. Among the several kinds of epithelial cells, only the epithelial supporting cells contain these pigment granules. Synthesis of the pigment materials is from the rough ER and pigment granules are finally being packaged and released by the Golgi complexes but limiting membrane of these granules are presumed to be originated from the smooth ER.

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