Kim, Hye Won;Oh, Sea Kwan;Lee, Jeong Heui;Yoon, Mi Ra;Kim, Dae Jung;Choi, Im Soo;Kim, Jung Gon;Lee, Jeom Sig
Food Science and Preservation
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v.20
no.6
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pp.834-839
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2013
The extraction yield, total phenolics content, antioxidant activity, cancer cell growth inhibition (A549 and MCF 7), and lung cancer cell (A549) viability of red rice and black rice were investigated, to evaluate the functional properties of colored rice. The extraction yields and the total phenolics contents of the rice cultivars were Heugseol > Heugkwang > Hongjinju > Jeogjinju > Ilpum. Also, the DPPH radical scavenging activity of the black rice did not differ from that of the red rice, whereas its activity among its cultivars was Jeogjinju > Heugseol > Heugkwang > Hongjinju > Ilpum. The ABTS antioxidant activity of the black rice (Heugkwang, Heugseol) was greater than that of the red rice. The total phenolics was partly attributed to its high antioxidant. On the other hand, the effect of the red rice on the lung cancer cell (A549) viability was higher than that of the black rice. The breast cancer cell (MCF 7) growth inhibition activity of the black rice did not differ from that of the red rice. Our results indicate that the ABTS antioxidant activity of black rice is better than that of red rice, and the lung cancer cell (A549) viability of red rice is better than that of black rice.
Background : The occurrence of lung complications after allogenic bone marrow transplantation(BMT) has been reported as 40-60 percent. The risk factors for lung complications are whole body irradiation, high dose chemotherapy, graft versus host disease, old age and CMV infection. The prevalence of graft versus host disease is less in Korea than in Western countries, but frequency of CMV infection is higher. Therefore, the pattern of lung complications may be different in Korea from those in Western countries. Methods : A retrospective cohort study was performed on one hundred consecutive adult patients who underwent allogenic bone marrow transplantation from December, 1993 to May, 1999 at Asan Medical Center. Lung complications were divided into two groups by the time of development, within 30days (pre-engraftment) and beyond 30 days (post-engraftment), and then subdivided into infectious and non-infectious complication. Infectious complications were defined as having the organism in blood, BAL fluid, pleural fluid or sputum, or compatible clinical findings in patients, which improved with antibiotics or an anti-fungal therapy. Result: 1) Eighty three episodes of lung complications had occurred in 54 patients. 2) Within thirty days after BMT, non-infectious complications were more common than infections, but this pattern was reversed after 30 days. After one year post-BMT, there was no infectious complication except in cases of recurrence of underlying disease or development of chronic GVHD. 3) Among the non-infectious complications, pleural effusion (27 episodes) was most common, followed by pulmonary edema (8 episodes), bronchiolitis obliterans(2 episodes), diffuse alveolar hemorrhage (1 episode) and bronchiloitis obliterans with organizing pneumonia (1 episode). 4) The infectious complications were pneumonia (bacterial: 9 episodes, viral: 4 episodes, fungal : 5 episodes, pneumocystis carinii : 1 episode), pulmonary tuberculosis(3 episodes) and tuberculous pleurisy (3 episodes). 5) Lung complications were more frequent in CMV positive patients and in patients with delayed recovery of neutrophil count. 6) The mortality was higher in the patients with lung complications. Conclusion : Lung complications developed in 54% after allogenic BMT and were associated with higher mortality.
Laminin, a kind of multidomain glycoproteins, is mainly localized in the basement membranes of various tissues. It is known that laminin plays an important part in mammalian lung morphogenesis. The authors have undertaken this study to investigate the changes in the distribution of laminin, and to find out cells which synthesize laminin during the organogenesis and differentiation of the lung. The fetal and neoantal rats (Sprague-Dawley strain) were used as experimental animals. The immunohisto-chemical methods were employed for detection of laminin within the developing lung tissue and the immunegold cytochemical methods were performed for detection of cells which synthesize laminin according to each stage of development. The results are as follows; 1. During fetal life, strong immunoreactivity for laminin is maintained in the basement membranes of the blood vessels and the bronchioles, the extracellular matrix of the mesenchyme, and basal lamina of the alveolar septum in the fetal rat lung. 2. After birth, laminin immunoreactivity at the alveolar septum is gradually reduced. 3. During fetal life, laminin is mainly detected within the cytoplasm of the mesenchymal cells, the endothelial cells of blood vessels and the fibroblasts in fetal rat lung. 4. According to the differentiation of type I and type II pneumocyte after birth, laminin is detected within cytoplasm of the type I pneumocytes, type II pneumocytes and fibroblasts. It is consequently suggested that laminin is largely expressed in the developing lung and laminin may be also synthesized by the type II pneumonocytes at early newborn stages.
Background : Immunotherapy for cancer has not been successful because of several obstacles in tumor and its environment. Inappropriate secretions of cytokines and growth factors by tumors cause substantial changes in the immune responses against tumors, affording the tumors some degree of protection from immune attack. Uteroglobin (UG, Clara cell secretory protein) has been known to have anti-inflammatory, immunomodulatory and anti-cancer activities. However, in lung cancer cells, UG expression is decreased. This study investigated the role of UG in the immunomodulation of lung cancer. Methods : The UG protein was overexpressed by Adenovirus(Ad)-UG transduction in non-small cell lung cancer cell lines. The concentration of Prostaglandin $E_2$ ($PGE_2$) was measured by Enzyme Immunoassay (EIA). Peripheral blood mononuclear cells (PBMC) from whole blood were prepared with Ficoll. PBMC were cultured in RPMI 1640, supernatant of A549, or A549 with UG or NS-398. Concentration of Th 1 type and Th 2 type cytokines from PBMC were measured by ELISA. Results : UG suppressed $PGE_2$, Cyclooxygenase-2 (COX-2) product. Both Th1 type such as Interleukin-2 (IL-2), Interferon-${\gamma}$ (IFN-${\gamma}$) and Tumor necrosis factor-${\alpha}$ (TNF-${\alpha}$) and Th2 type cytokines such as IL-10 and Tumor growth factor-${\beta}$ (TGF-${\beta}$) were increased when PBMC were cultured with supernatant of non small lung cancer cells. UG and COX-2 inhibitor, NS-398 induced normal immune response of PBMC. Although Th 1 type cytokines were increased, Th 2 type cytokines were reduced by UG. Conclusion : UG suppressed PGE2, COX-2 product. Supernatant of NSCLC induced imbalance of immune response of PBMC. However, UG reversed this imbalance. These results suggest that UG may be used in the development of immunotherapy for lung cancer.
BACKGROUND: in vitro micronucleus test (vitMNT) is one of the promising alternative testing methods in genotoxicity test and was adopted as OECD test guideline for chemical registration. This study was conducted to optimize the cytoplasm conditions in vitMNT using Chinese hamster lung (CHL) cell. METHODS AND RESULTS: In this study cytokinesis-block micronucleus test was conducted. Mitomycin C and colchicine were used as positive control chemicals and were treated for three hours (short time) or twenty-four hours (long time). Giemsa solution was used for cell staining. For optimization of vitMNT, the final fixative was prepared as five concentrations (0%, 1%, 3%, 5%, and 25%) of acetic acid in methanol, and treatment times of the final fixative were varied under four conditions (immediately, one hour, four hours, and one day). CONCLUSION: Acetic acid at 1% in methanol as the final fixative was most adequate to preserve the cytoplasm around the nucleus in the interphase cells. Also, fixative treatment time of cell suspension for one to four hours may minimize the cell rupture. These results can be helpful for getting an accurate result promptly due to clear visual distinction to score micronucleus in vitMNT using giemsa solution.
The purpose of this study were to develop an web-based education program for Lung cancer patients and to test its effects on patients' self-care knowledge, compliance to medical regimen, nutrition status and pain. The program was developed by the following process: first, Lung cancer patients demand on the web-based program was investigated. and second, the program was developed with the help of various reference books and then validation of experts group. last, educations effects on the patients is evaluated and compared the differences in self-care knowledge, compliance to medical regimen, nutrition status and pain between on experimental group and a control group on before discharge 1day and 3weeks after. SPSS/Win 11.0 program was used for data analysis. It was proven with $x^2$ test and t-test, and Pearson Correlation coefficient, and Chronbach's alpha coefficient were done for the reliability of measuring instruments. 1. The summary of the Program development is as follows. The program is based on patients' questionnaire and reference material and is made for users friendly. Not only Bigger font size and bright colors but also illustrations or pictures were adopted to help enhance patients' understanding. 2. The summary of the study results is as follows. 1) Compared with control group, the web-based educated experimental group showed a statistical significant difference on self-care knowledge, Especially disease, radiation treatment, medication & analgesics, chemotherapy side effect, but there was no significant difference in the field of chemotherapy, in the fields of operation, diet & general knowledge. 2) Compared with control group, the web-based educated experimental group showed a statistical significant difference on compliance to medical regimen, especially in the field of follow up care, everyday life, diet, but there was no significant difference in the field of medication, exercise. 3) Compared with control group, web-based educated experimental group showed no significant difference in nutrition status, but partially significant difference in body weight. 4) Compared with control group, the web-based educated experimental group showed no significant difference in pain level. 5) The significantly positive correalation self-care knowledge with the compliance to medical regimen. 6) Users satisfaction with the web-based education program of the contents quality, the level of recommendation to others, content layout, medical information quality, but interesting got a low mark.
Kim, Dong Joon;Park, Young Soo;Kim, Nam Doo;Min, Sang Hyun;You, Yeon-Mi;Jung, Yuri;Koo, Han;Noh, Hanmi;Kim, Jung-Ae;Park, Kyung Chan;Yeom, Young Il
Molecules and Cells
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v.38
no.4
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pp.373-379
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2015
Pyruvate kinase M2 isoform (PKM2), a rate-limiting enzyme in the final step of glycolysis, is known to be associated with the metabolic rewiring of cancer cells, and considered an important cancer therapeutic target. Herein, we report a novel PKM2 activator, PA-12, which was identified via the molecular docking-based virtual screening. We demonstrate that PA-12 stimulates the pyruvate kinase activity of recombinant PKM2 in vitro, with a half-maximal activity concentration of $4.92{\mu}M$, and effectively suppresses both anchorage-dependent and -independent growth of lung cancer cells in non-essential amino acid-depleted medium. In addition, PA-12 blocked the nuclear translocalization of PKM2 in lung cancer cells, resulting in the inhibition of hypoxia response element (HRE)-mediated reporter activity as well as hypoxia-inducible factor 1 (HIF-1) target gene expression, eventually leading to the suppression of cell viability under hypoxia. We also verified that the effects of PA-12 were dependent on PKM2 expression in cancer cells, demonstrating the specificity of PA-12 for PKM2 protein. Taken together, our data suggest that PA-12 is a novel and potent PKM2 activator that has therapeutic implications for lung cancer.
Background: Autophagy is an important adaptive mechanism in normal development and in response to changing environmental stimuli in cancer. Previous papers have reported that different types of cancer underwent autophagy to obtain amino acids as energy source of dying cells in nutrient-deprived conditions. However, whether or not autophagy in the process of lung cancer causes death or survival is controversial. Therefore in this study, we investigated whether nutrient deprivation induces autophagy in human H460 lung cancer cells. Methods: H460, lung cancer cells were incubated in RPMI 1640 medium, and the starved media, which are BME and RPMI media without serum, including 2-deoxyl-D-glucose according to time dependence. To evaluate the viability and find out the mechanism of cell death under nutrient-deprived conditions, the MTT assay and flow cytometry were done and analyzed the apoptotic and autophagic related proteins. It is also measured the development of acidic vascular organelles by acridine orange. Results: The nutrient-deprived cancer cell is relatively sensitive to cell death rather than normal nutrition. Massive cytoplasmic vacuolization was seen under nutrient-deprived conditions. Autophagic vacuoles were visible at approximately 12 h and as time ran out, vacuoles became larger and denser with the increasing number of vacuoles. In addition, the proportion of acridine orange stain-positive cells increased according to time dependence. Localization of GFP-LC3 in cytoplasm and expression of LC-3II and Beclin 1 were increased according to time dependence on nutrient-deprived cells. Conclusion: Nutrient deprivation induces cell death through autophagy in H460 lung cancer cells.
Purpose : Bronchopulmonary dysplasia (BPD) is characterized by arrested vascular and alveolar growth in the premature lung. Considering the consequences of arrested lung growth, the idea of administering bone marrow cells to enhance the inborn repair mechanism is promising as this may reduce the morbidity and mortality of BPD. We followed enhanced green fluorescent protein (EGFP)-labeled bone marrow cells (BMC) injected intraperitoneally into non-EGFP mice in order to determine their fate after transplantation. Methods : An angiogenesis inhibitor, SU1498, was injected subcutaneously on day 3 in non-EGFP C57BL/6 newborn mice to create a model of arrested alveolar development. On the following day, $1{\times}10^6$ BMCs isolated from major histocompatibility complex (MHC)- matched syngenic EGFP mice were injected intraperitoneally to non-EGFP BPD mice. Morphometric analysis, immunostaining, and confocal microscopy were performed to determine the fate of EGFP-positive stem cells in the injured lung. Results : SU1498 injection reduced alveolar surface area and mean alveolar volume in newborn mice. BMC injection resulted in recovery of lung structure comparable to controls. EGFP-positive BMCs were identified in the lungs of the recipient mice after intraperitoneal injection. The injected EGFP cells were co-stained with endothelial and epithelial cells of the developing lung as determined by confocal microscopy. Conclusion : Our results illustrated that EGFP-positive BMCs engrafted and trans-differentiated into epithelial and endothelial cells after intraperitoneal injection in a mouse model of arrested alveolar development.
Much progress has been made in understanding the subcellular events of the human lung injuries after acute exposure to environmental air pollutants. Host of those events represent oxidative damages mediated by reactive oxygen species such as superoxide, hydrogen peroxide, and the hydroxy, free radical. Recently, nitric oxide (NO) was found to be endogenously produced by endothelial cells and cells of the reticulo-endothelial system as endothelialderived relaxation factor (EDRF) which is a vasoactive and neurotransmitter substance. Together with superoxide, NO can form another strong oxidant, peroxonitrite. The relative importance of exogenous sources of $N0/N0_2$ and endogenous production of NO by the EDRF producing enzymes in the oxidative stresses to the heman lung has to be elucidated. The exact events leading to chronic irreversible damage are still yet to be known. From chronic exposure to oxidant gases, progressive epithelial and interstitial damages develop. Type I epithelial cells become thicker and cover a smaller average alveolar surface area while thee II cells proliferate instead. Under acute damages, the extent of loss of the alveolar epithelial cell lining, especially type II cells appears to be a good predictor of the ensuing irreversible damage to alveolar compartment. Interstitial matrix undergo remodeling during chronic exposure with increased collagen fibers and interstitial fibroblasts. However, Inany of these changes can be reversed after cessation of exposure. Among chronic lung injuries, genetic damages and repair responses received particular attention in view of the known increased lung cancer risks from exposure to several air pollutants. Heavy metals from foundry emission, automobile traffics, and total suspended particulate, especially polycystic aromatic hydrocarbons have been positively linked with the development of lung cancer. Asbestos in another air pollutant with known risk of lung cancer and mesothelioma, but asbestos fibers are nonauthentic in most bioassays. Studies using the electron spin resonance spin trapping method show that the presence of iron in asbestos accelerates the production of the hydroxy, radical in vitro. Interactions of these reactive oxygen species with particular cellular components and disruption of cell defense mechanisms still await further studies to elucidate the carcinogenic potential of asbestos fibers of different size and chemical composition. The distribution of inhaled pollutants and the magnitude of their eventual effects on the respiratory tract are determined by pollutant-independent physical factors such as anatomy of the respiratory tract and level and pattern of breathing, as well as by pollutant-specific phyco-chemical factors such as the reactivity, solubility, and diffusivity of the foreign gas in mucus, blood and tissue. Many of these individual factors determining dose can be quantified in vitro. However, mathematical models based on these factors should be validated for its integrity by using data from intact human lungs.
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