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Niederdeppe J, Shapiro MA, Kim HK, Bartolo D, Porticella N. Narrative persuasion, causality, complex integration, and support for obesity policy. Health Commun 2013; 29:431-444. [PMID: 23829316 DOI: 10.1080/10410236.2012.761805] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Narrative messages have the potential to convey causal attribution information about complex social issues. This study examined attributions about obesity, an issue characterized by interrelated biological, behavioral, and environmental causes. Participants were randomly assigned to read one of three narratives emphasizing societal causes and solutions for obesity or an unrelated story that served as the control condition. The three narratives varied in the extent to which the character in the story acknowledged personal responsibility (high, moderate, and none) for controlling her weight. Stories that featured no acknowledgment and moderate acknowledgment of personal responsibility, while emphasizing environmental causes and solutions, were successful at increasing societal cause attributions about obesity and, among conservatives, increasing support for obesity-related policies relative to the control group. The extent to which respondents were able to make connections between individual and environmental causes of obesity (complex integration) mediated the relationship between the moderate acknowledgment condition and societal cause attributions. We conclude with a discussion of the implications of this work for narrative persuasion theory and health communication campaigns.
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152
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Kim JH, Kim HK, Ko JH, Bang H, Lee DC. The relationship between leukocyte mitochondrial DNA copy number and telomere length in community-dwelling elderly women. PLoS One 2013; 8:e67227. [PMID: 23785520 PMCID: PMC3681770 DOI: 10.1371/journal.pone.0067227] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Accepted: 05/15/2013] [Indexed: 12/19/2022] Open
Abstract
Purpose Both telomere length and mitochondrial function are accepted as reflective indices of aging. Recent studies have shown that telomere dysfunction may influence impaired mitochondrial biogenesis and function. However, there has been no study regarding the possible association between telomere and mitochondrial function in humans. Therefore, the purpose of the study was to identify any relationships between mitochondrial and telomere function. Methods The present study included 129 community-dwelling, elderly women. The leukocyte mitochondrial DNA copy number and telomere length were measured using a quantitative real-time polymerase chain reaction method. Anthropometric measurement, biochemical blood testing, a depression screening questionnaire using a 15-question geriatric depression scale (GDS-15), and a cognitive function test using the Korean version of the mini mental state examination (K-MMSE) were performed. Results Leukocyte mtDNA copy number was positively associated with telomere length (r=0.39, p=<0.0001) and K-MMSE score (r=0.06, p=0.02). Additionally, leukocyte mtDNA copy number was negatively correlated with GDS-15 score (r=-0.17, p=0.04). Age (r=-0.15, p=0.09), waist circumference (r=-0.16, p=0.07), and serum ferritin level (r=-0.13, p=0.07) tended to be inversely correlated with leukocyte mtDNA copy number. With a stepwise multiple regression analysis, telomere length was found to be an independent factor associated with leukocyte mtDNA copy number after adjustment for confounding variables including age, body mass index, waist circumference, total cholesterol, HDL-cholesterol, LDL-cholesterol, triglycerides, hs-CRP, serum ferritin, HOMA-IR, K-MMSE, GDS-15, hypertension, diabetes, dyslipidemia, currently smoking, alcohol drinking, and regular exercise. Conclusions This study showed that leukocyte mtDNA copy number was positively correlated with leukocyte telomere length in community-dwelling elderly women. Our findings suggest that telomere function may influence mitochondrial function in humans.
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Affiliation(s)
- Jung-Ha Kim
- Department of Family Medicine, Chung-Ang University Healthcare System, Seoul, Korea
| | - Hye Kyung Kim
- Health Promotion Center, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jae-Hong Ko
- Department of Physiology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Hyoweon Bang
- Department of Physiology, College of Medicine, Chung-Ang University, Seoul, Korea
- * E-mail: (D-CL); (HB)
| | - Duk-Chul Lee
- Department of Family Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
- * E-mail: (D-CL); (HB)
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153
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Han SB, Bae EY, Lee JW, Lee DG, Chung NG, Jeong DC, Cho B, Kang JH, Kim HK. Clinical characteristics and antibiotic susceptibility of viridans streptococcal bacteremia in children with febrile neutropenia. Infection 2013; 41:917-24. [PMID: 23640200 DOI: 10.1007/s15010-013-0470-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2013] [Accepted: 04/22/2013] [Indexed: 10/26/2022]
Abstract
PURPOSE This retrospective study was performed in order to investigate the clinical characteristics and antibiotic susceptibility of viridans streptococcal bacteremia (VSB) in febrile neutropenic children in the context of the increase in incidence and antibiotic resistance of VSB. METHODS We conducted this study among neutropenic children with underlying hematology/oncology diseases who were diagnosed with VSB at a single institution from April 2009 to June 2012. Clinical and laboratory characteristics of the children as well as antibiotic susceptibility of the causative viridans streptococci were evaluated. RESULTS Fifty-seven episodes of VSB were diagnosed in 50 children. Severe complications occurred in four children (7.0%), and a death of one child (1.8%) was attributable to VSB. Acute myeloid leukemia was the most common underlying disease (70.2% of all cases), and 71.9% of all cases received chemotherapy including high-dose cytarabine. VSB occurred at a median of 13 days (range 8-21 days) after the beginning of chemotherapy, and fever lasted for a median of 4 days (range 1-21 days). The C-reactive protein level significantly increased within a week after the occurrence of VSB (p < 0.001) and the maximum C-reactive protein level showed a positive correlation with fever duration (r = 0.362, p = 0.007). Second blood cultures were done before the use of glycopeptides in 33 children, and negative results were observed in 30 children (90.9%). Susceptibilities to cefotaxime, cefepime, and vancomycin were 58.9, 69.1, and 100%, respectively. CONCLUSIONS Severe complications of VSB in neutropenic febrile children were rare. We suggest glycopeptide use according to the results of blood culture and antibiotic susceptibility tests based on the susceptibility to cefepime and the microbiologic response to empirical antibiotic treatment not including glycopeptides in this study.
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Affiliation(s)
- S B Han
- Department of Pediatrics, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, Republic of Korea
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154
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Affiliation(s)
- Kang-Hyun Leem
- College of Oriental Medicine, Semyung University, Jechon, Chungbuk, Republic of Korea
| | - Sena Lee
- College of Oriental Medicine, Semyung University, Jechon, Chungbuk, Republic of Korea
| | - Aera Jang
- Department of Animal Products and Food Science, Kangwon National University, Chuncheon, Republic of Korea
| | - Hye Kyung Kim
- Department of Food and Biotechnology, Hanseo University, Seosan, Chungnam, Republic of Korea
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155
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Park KY, Kim HK, Kim BJ. Comparative study of hyaluronic acid fillers by in vitro and in vivo testing. J Eur Acad Dermatol Venereol 2013; 28:565-8. [PMID: 23495913 DOI: 10.1111/jdv.12135] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Accepted: 02/14/2013] [Indexed: 11/30/2022]
Abstract
BACKGROUND Numerous hyaluronic acid (HA) fillers seem to have similar characteristics, although manufacturers insist that monophasic and biphasic HA fillers are different in many ways. Little information regarding this is available in the literature. OBJECTIVES To determine characteristics of monophasic fillers vs. biphasic fillers. MATERIAL AND METHODS We tested three different (two biphasic and one monophasic) HA fillers both in vitro and in vivo. In the in vitro assay, cell toxicity, resistance to enzyme degradation, syringeability and morphology of particles were tested. In vivo, the efficacy and safety were investigated in the dorsal skin of hairless mice. RESULTS There was no cell toxicity in any of the three HA fillers. Resistance to enzymatic degradation and syringeability were better in the two biphasic HA fillers than in the monophasic filler. In particle morphology test, gel type monophasic HA filler was also found as a particle type, although there was a slight difference. Volume assessment in animal skin was superior with the monophasic than with the two biphasic HA fillers. CONCLUSION Biphasic HA fillers have some advantages in hyaluronidase resistance, syringeability and lower risk for overcorrection, while monophasic HA fillers may be more suitable for volume augmentation due to swelling capacity.
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Affiliation(s)
- K Y Park
- Departments of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
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156
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Huynh TML, Nguyen BH, Nguyen VG, Dang HA, Mai TN, Tran THG, Ngo MH, Le VT, Vu TN, Ta TKC, Vo VH, Kim HK, Park BK. Phylogenetic and phylogeographic analyses of porcine circovirus type 2 among pig farms in Vietnam. Transbound Emerg Dis 2013; 61:e25-34. [PMID: 23414511 DOI: 10.1111/tbed.12066] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Indexed: 11/29/2022]
Abstract
This study demonstrated the prevalence of Porcine circovirus type 2 (PCV2) among pig farms in Vietnam. Analyses of the genome, capsid protein and phylogeny classified all 30 Vietnamese PCV2 strains as the PCV2b genotype, belonging to the clusters of 1A, 1B, 1C and recombinant forms. Each viral genome was 1767 nucleotides long and shared 96.0-100% nucleotide sequence identity. The amino acid substitutions in the capsid protein of the Vietnamese PCV2 strains were in immunodominant regions, and the majority of strains (24/30) contained a lysine extension at the C-terminus. Bayesian phylogeographic analysis revealed epidemic links of the PCV2 recombinant cluster within and among countries, which supports a circulating recombinant form of PCV2. Further analysis by the Jameson-Wolf antigenic index indicated antigenic alterations at important sites in the capsid protein (sites 131-133) among the recombinant cluster and the other clusters of PCV2b.
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Affiliation(s)
- T M L Huynh
- Department of Microbiology and Infectious Diseases, Faculty of Veterinary Medicine, Hanoi University of Agriculture, Hanoi, Vietnam
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157
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Wada H, Thachil J, Di Nisio M, Mathew P, Kurosawa S, Gando S, Kim HK, Nielsen JD, Dempfle CE, Levi M, Toh CH. Guidance for diagnosis and treatment of DIC from harmonization of the recommendations from three guidelines. J Thromb Haemost 2013; 11:S1538-7836(22)13716-5. [PMID: 23379279 DOI: 10.1111/jth.12155] [Citation(s) in RCA: 270] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Three guidelines have recently been published for the diagnosis and treatment of disseminated intravascular coagulation (DIC) in adults. This communication seeks to harmonize the recommendations in these guidelines using a modified GRADE system. The scoring system for diagnosis of DIC using global coagulation tests is known to correlate with key clinical observations and outcomes (Moderate quality). The cornerstone of DIC treatment is the treatment of the underlying condition (Moderate quality). In general, transfusion of platelets or plasma (components) in patients with DIC should be reserved for patients who are bleeding (Low quality). Therapeutic doses of heparin should be considered in cases of DIC where clinical features of thrombosis predominate. Heparin is not recommended in those patients with a high risk of bleeding, (Moderate quality). However, prophylactic doses of unfractionated heparin or low molecular we ight heparin is recommended in critically ill and non-bleeding patients with DIC for prevention of venous thromboembolism (Moderate to High quality). Although further prospective evidence from randomized controlled trials is required, administration of antithrombin or recombinant thrombomodulin may be considered in certain patients with DIC. In general, patients with DIC should not be treated with antifibrinolytic agents (Low quality). However those who present with severe bleeding, that is characterized by a markedly hyperfibrinolytic state such as leukemia (Low quality) and trauma (Moderate quality), may be treated with antifibrinolytic agents. © 2013 International Society on Thrombosis and Haemostasis.
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Affiliation(s)
- H Wada
- Department of Molecular and Laboratory Medicine, Mie University School of Medicine, Mie, Japan
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158
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Nguyen VG, Kim HK, Moon HJ, Park SJ, Chung HC, Choi MK, Park BK. A Bayesian phylogeographical analysis of type 1 porcine reproductive and respiratory syndrome virus (PRRSV). Transbound Emerg Dis 2013; 61:537-45. [PMID: 23336975 DOI: 10.1111/tbed.12058] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Indexed: 01/05/2023]
Abstract
Understanding viral transmission is an important factor for the effective prevention one of the most devastating swine diseases, porcine reproductive and respiratory syndrome. Focusing on molecular epidemiology of type 1 PRRSV, this study analysed a large ORF5 dataset collected worldwide from 1991 to 2012 using a coalescent-based Bayesian Markov chain Monte Carlo approach. The results suggested that the virus diversified into unique subpopulations in Russia & Belarus and Italy approximately 100 years ago. Previously unreported consecutive diffusions of the virus were identified, which showed that some countries, such as Spain and Germany, acted as distribution sources to some extent. This study also provided statistical evidence for the existence of an ORF5-based phylogeographical structure of type 1 PRRSV, in which the virus tended to cluster by geographical locations more tightly than expected by chance. In contrast to this tight geographical structure, the evolution of the ORF5 gene, based on mapping of non-synonymous/synonymous substitutions, was best described by a non-homogeneous process that could be implicated as a mechanism for viral immune evasion.
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Affiliation(s)
- V G Nguyen
- Department of Veterinary Medicine Virology Laboratory, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Korea; Department of Microbiology and Infectious Diseases, Faculty of Veterinary Medicine, Hanoi University of Agriculture, Hanoi, Vietnam
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159
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Kim HK, Niederdeppe J. Exploring optimistic bias and the integrative model of behavioral prediction in the context of a campus influenza outbreak. J Health Commun 2013; 18:206-22. [PMID: 23020687 DOI: 10.1080/10810730.2012.688247] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
This study aims to determine the utility of constructs from the Integrative Model of Behavioral Prediction in predicting behaviors associated with flu prevention in a college campus. Building on previous studies that document substantial optimistic bias among college students, this study explores possible roles for optimistic bias in the Integrative Model of Behavioral Prediction. The authors conducted an online survey among a stratified random sample (N = 429) of undergraduate students in a university that experienced a large H1N1 influenza outbreak in the fall of 2009. The authors offer 3 major findings: (a) the 3 primary components in the Integrative Model of Behavioral Prediction predicted the intention to perform hand washing and sanitizing, with self-efficacy being the strongest predictor; (b) unrealistic optimists had significantly lower intentions to perform hand hygiene practices compared with realists or unrealistic pessimists; and (c) comparative optimism was a significant moderator of the relation between self-efficacy and behavioral intention, controlling for perceived risk. Theoretical and practical implications of these findings are discussed.
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Affiliation(s)
- Hye Kyung Kim
- Department of Communication, Cornell University, Ithaca, New York 14853, USA.
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160
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Lim EA, Gunther JE, Flexman M, Kim HK, Hibshoosh H, Kalinsky K, Crew K, Maurer M, Taback B, Feldman S, Brown M, Refice S, Alvarez-Cid M, Hielscher A, Hershman DL. Abstract P4-02-07: Early Optical Tomography Changes Predict Breast Cancer Response to Neoadjuvant Chemotherapy. Cancer Res 2012. [DOI: 10.1158/0008-5472.sabcs12-p4-02-07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Pathologic complete response (pCR) or a low Residual Cancer Burden (RCB) score following neoadjuvant chemotherapy (NACT) predicts a superior survival in breast cancer (BC) patients. An early predictive marker of tumor response during NACT would provide a way to optimize treatment for non-responders; however, no ideal technology currently exists. Diffuse optical tomography (DOT) is a novel, fast, safe, and low-cost technique that uses near infrared light to provide 3D data on tissue vascularity without the use of radiation, making it a promising technology for assessing early tumor response to NACT. We hypothesized that a 2-week change in DOT parameters would predict response to NACT as measured by the RCB score.
Methods: Women with stage II-IIIc invasive BC scheduled to undergo NACT with 12 cycles of a weekly taxane followed by 4 cycles of doxorubicin with cyclophosphamide (AC) were enrolled. Treatment with additional biologic therapies was allowed. DOT measurements were made before starting NACT, 2 weeks into treatment, and before surgery. Concentrations of oxyhemoglobin [HbO2], deoxyhemoglobin [Hb], total hemoglobin [HbT], and tissue scattering (SC) were measured by DOT. Final pathology specimens were scored for the RCB index (continuous measure), RCB class (0, 1, 2, 3), and a dichotomized RCB score (RCB class 0 or 1: responders to NACT; RCB class 2 or 3: non-responders). Correlation analysis, ANOVA testing, and two sample t-tests were used to evaluate the relationship between the two-week changes in DOT parameters and the RCB score.
Results: Since July 2011, we have recruited 11 pts, of whom 7 have undergone surgery. Complete data is available for 6 pts. Two of 7 pts had a pCR (RCB 0), 1 had RCB 1, 3 had RCB 2, and 1 had RCB 3. The Pearson correlation between the 2-week change in [Hb] and the continuous RCB index was 0.94 (p = 0.0047), and that between the 2-week change in SC and the RCB index was 0.93 (p = 0.0073). At 2 weeks, the [Hb] decreased by 6.7% for pts whose pathology demonstrated an RCB 0 (pCR), 1.8% for RCB 1, 0.6% for RCB 2, and increased 0.7% for RCB 3. ANOVA and Tukey testing demonstrated a significant difference in the [Hb] change for pts with RCB 0 compared to pts with RCB 1, 2, or 3 (p <0.05). At 2 weeks, SC decreased by 26.5% for pts with RCB 0, 19.3% for RCB 1, 3.7% for RCB 2, and increased by 25.1% for RCB 3. There was a significant difference in the SC change for pts with RCB 0 compared to pts with RCB 3 (p <0.05). Responders (RCB 0/1) had a 5% decrease in [Hb] at 2 weeks compared to non-responders (RCB 2/3) who had a decrease in 0.18% in [Hb] (p = 0.0045), and responders had a 24% decrease in SC compared to non-responders who had an increase in 6% (p = 0.044).
Conclusions: DOT change is an early predictor of response to NACT as measured by the RCB score. We found a significant linear association between the RCB index and the 2-week change in [Hb] and SC. Significantly different changes in DOT parameters were associated with the other RCB classifications. Additional recruitment is ongoing and differences by tumor subtype will be evaluated.
*These two authors contributed equally to this study
Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr P4-02-07.
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Affiliation(s)
- EA Lim
- Columbia University Medical Center, New York, NY; Columbia University, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Mailman School of Public Health, New York, NY
| | - JE Gunther
- Columbia University Medical Center, New York, NY; Columbia University, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Mailman School of Public Health, New York, NY
| | - M Flexman
- Columbia University Medical Center, New York, NY; Columbia University, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Mailman School of Public Health, New York, NY
| | - HK Kim
- Columbia University Medical Center, New York, NY; Columbia University, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Mailman School of Public Health, New York, NY
| | - H Hibshoosh
- Columbia University Medical Center, New York, NY; Columbia University, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Mailman School of Public Health, New York, NY
| | - K Kalinsky
- Columbia University Medical Center, New York, NY; Columbia University, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Mailman School of Public Health, New York, NY
| | - K Crew
- Columbia University Medical Center, New York, NY; Columbia University, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Mailman School of Public Health, New York, NY
| | - M Maurer
- Columbia University Medical Center, New York, NY; Columbia University, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Mailman School of Public Health, New York, NY
| | - B Taback
- Columbia University Medical Center, New York, NY; Columbia University, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Mailman School of Public Health, New York, NY
| | - S Feldman
- Columbia University Medical Center, New York, NY; Columbia University, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Mailman School of Public Health, New York, NY
| | - M Brown
- Columbia University Medical Center, New York, NY; Columbia University, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Mailman School of Public Health, New York, NY
| | - S Refice
- Columbia University Medical Center, New York, NY; Columbia University, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Mailman School of Public Health, New York, NY
| | - M Alvarez-Cid
- Columbia University Medical Center, New York, NY; Columbia University, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Mailman School of Public Health, New York, NY
| | - A Hielscher
- Columbia University Medical Center, New York, NY; Columbia University, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Mailman School of Public Health, New York, NY
| | - DL Hershman
- Columbia University Medical Center, New York, NY; Columbia University, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Mailman School of Public Health, New York, NY
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Gando S, Wada H, Kim HK, Kurosawa S, Nielsen JD, Thachil J, Toh CH. Comparison of disseminated intravascular coagulation in trauma with coagulopathy of trauma/acute coagulopathy of trauma-shock. J Thromb Haemost 2012; 10:2593-5. [PMID: 23362522 DOI: 10.1111/jth.12011] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S Gando
- Division of Acute and Critical Care Medicine, Department of Anesthesiology and Critical Care Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
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162
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Zhao C, Kim HK, Kim SZ, Chae HJ, Cui WS, Lee SW, Jeon JH, Park JK. What is the role of unripe Rubus coreanus extract on penile erection? Phytother Res 2012; 25:1046-53. [PMID: 21254274 DOI: 10.1002/ptr.3393] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The effect of unripe Rubus coreanus extract on rabbit penile corpus cavernosum (PCC) was evaluated. Penises were obtained from healthy male New Zealand white rabbits (2.5-3.0 kg). The pre-contracted penis with phenylephrine (Phe, 10 μM) was treated with various concentrations of an extract of unripe R. coreanus (0.5, 1, 2, 3 and 4 mg/mL). The change in penile tension was recorded, cyclic nucleotides in the perfusate and the PCC were measured by radioimmunoassay, and the expression of neuronal nitric oxide synthase (nNOS) and endothelial nitric oxide synthase (eNOS) in the perfused PCC were measured by western blotting. The interaction between unripe R. coreanus and sildenafil was also evaluated. The PCC relaxation induced by the extracts of R. coreanus was in a concentration-dependent manner and enhanced sildenafil-induced PCC relaxation. The perfusion of penile cavernous tissue with the unripe R. coreanus extract increased cGMP and cAMP in the tissue and in the perfusate and the expression of eNOS and nNOS in the tissue. The unripe R. coreanus extract exerts a relaxing effect on penile cavernous tissue in part by activating the NO-cGMP system and it may improve erectile dysfunction (ED), which does not completely respond to sildenafil citrate.
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Affiliation(s)
- Chen Zhao
- Department of Urology, Chonbuk National University Hospital, Jeonju, Jeonbuk 561-712, South Korea
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163
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Kim HK, Choi YW, Lee EN, Park JK, Kim SG, Park DJ, Kim BS, Lim YT, Yoon S. 5-Hydroxymethylfurfural from black garlic extract prevents TNFα-induced monocytic cell adhesion to HUVECs by suppression of vascular cell adhesion molecule-1 expression, reactive oxygen species generation and NF-κB activation. Phytother Res 2012; 25:965-74. [PMID: 21213354 DOI: 10.1002/ptr.3351] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
5-Hydroxymethylfurfural (5-HMF) is a common Maillard reaction product; the reaction occurs during heat-processing and the preparation of many types of foods and beverages. Although 5-HMF has been proposed to have harmful effects, recently, its beneficial effects, including antioxidant, cytoprotective and antitumor effects have become increasingly apparent. It was found recently that a chloroform extract of aged black garlic shows antiinflammatory properties when administered to human umbilical vein endothelial cells (HUVECs). This study investigated the antiinflammatory potential of 5-HMF purified from the chloroform extract of aged black garlic in tumor necrosis factor-α (TNF-α)-stimulated HUVECs. Treatment of HUVECs with 5-HMF strongly suppressed TNF-α-induced cell surface and total protein expression of vascular cell adhesion molecule-1 (VCAM-1) and intercellular cell adhesion molecule-1 (ICAM-1) as well as their mRNA expression. In addition, 5-HMF significantly inhibited TNF-α-induced reactive oxygen species formation, and markedly reduced THP-1 monocyte adhesion to TNF-α-stimulated HUVECs. Furthermore, 5-HMF significantly inhibited NF-κB transcription factor activation in TNF-α-stimulated HUVECs. The data provide new evidence of the antiinflammatory properties of 5-HMF in support of its potential therapeutic use for the prevention and management of vascular diseases such as atherosclerosis through mechanisms involving the inhibition of VCAM-1 expression and NF-κB activation in vascular endothelial cells.
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Affiliation(s)
- Hye Kyung Kim
- Department of Anatomy, Pusan National University School of Medicine, Yangsan 626-870, Korea
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164
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Kim HK, Prokunina-Olsson L, Chanock SJ. Common genetic variants in miR-1206 (8q24.2) and miR-612 (11q13.3) affect biogenesis of mature miRNA forms. PLoS One 2012; 7:e47454. [PMID: 23077621 PMCID: PMC3471815 DOI: 10.1371/journal.pone.0047454] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Accepted: 09/14/2012] [Indexed: 11/18/2022] Open
Abstract
Cancer genome-wide association studies (GWAS) have identified many common genetic markers located in non-coding regions of the genome. Two notable examples are the multi-cancer susceptibility regions, 8q24.2 and 11q13.3. Since these GWAS signals localize to gene-poor regions, we investigated genetic variants within pre-microRNA (pre-miRNA) transcripts as a possible link between the GWAS findings and the associated molecular phenotypes. Across the two regions, which contain 37 miRNAs genes, we explored genetic variants by surveying public databases and conducting targeted resequencing. Specifically, we investigated one common single nucleotide polymorphism (SNP) within miR-1206 on 8q24.2 and two SNPs within miR-612 on 11q13.3. Though these variants are not correlated with known GWAS signals, we conjectured that they might be important for function of corresponding miRNAs. To test the functional significance of these genetic variants, we cloned both allelic forms of miR-1206 and miR-612 pre-miRNA into expression vectors and assessed biogenesis of mature miRNA-forms. The two SNPs within miR-612 significantly affected expression of mature miR-612 in a cell-type specific manner; enhancement in prostate cancer cell lines, reduction in colon cancer cells, and no effect in breast cancer cell lines. The SNP within miR-1206 also affected expression of mature miR-1206, but not in a cell-type specific manner. Future studies should identify targets of miR-1206 and miR-612 and help understand the biological roles of these miRNAs and their possible role in carcinogenesis.
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Affiliation(s)
- Hye Kyung Kim
- Laboratory of Translational Genomics, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland, United States of America
| | - Ludmila Prokunina-Olsson
- Laboratory of Translational Genomics, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland, United States of America
| | - Stephen J. Chanock
- Laboratory of Translational Genomics, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland, United States of America
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165
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Jeon YM, Park JK, Yoon SW, Ko WH, Lee SG, Lee KD, Yun GS, Nam YU, Kim WC, Kwak JG, Lee KS, Kim HK, Yang HL. Suppression of edge localized modes in high-confinement KSTAR plasmas by nonaxisymmetric magnetic perturbations. Phys Rev Lett 2012; 109:035004. [PMID: 22861864 DOI: 10.1103/physrevlett.109.035004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2011] [Indexed: 06/01/2023]
Abstract
Edge localized modes (ELMs) in high-confinement mode plasmas were completely suppressed in KSTAR by applying n=1 nonaxisymmetric magnetic perturbations. Initially, the ELMs were intensified with a reduction of frequency, but completely suppressed later. The electron density had an initial 10% decrease followed by a gradual increase as ELMs were suppressed. Interesting phenomena such as a saturated evolution of edge T(e) and broadband changes of magnetic fluctuations were observed, suggesting the change of edge transport by the applied magnetic perturbations.
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Affiliation(s)
- Y M Jeon
- National Fusion Research Institute, Daejeon, Korea.
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166
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Kim MJ, Kim HK. Insulinotrophic and hypolipidemic effects of Ecklonia cava in streptozotocin-induced diabetic mice. ASIAN PAC J TROP MED 2012; 5:374-9. [PMID: 22546654 DOI: 10.1016/s1995-7645(12)60062-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2012] [Revised: 02/15/2012] [Accepted: 03/15/2012] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To explore the anti-diabetic activity of Ecklonia cava (EC) in streptozotocin (STZ)-induced diabetic mice. METHODS Diabetes was induced by a single intraperitoneal injection of STZ (90 mg/kg). Normal and diabetic mice were treated with 0%, 3%, and 5% EC diet for 4 weeks. Serum glucose and insulin concentrations, serum lipid profile, oral glucose tolerance test, and liver and pancreatic β-cell histopathological observations were performed. In addition, in vitro glucose-induced insulin secretion was determined using pancreatic β-islet cells. RESULTS EC supplementation significantly and dose-dependently decreased serum glucose concentration, and improved glucose homeostasis in diabetic mice by preventing loss of β-cell mass resulting in increase of insulin secretion. The triglyceride and total cholesterol concentrations in the serum and liver were markedly reduced by EC treatment in STZ-diabetic mice. Moreover, LDL-, and HDL-cholesterol levels were ameliorated in EC supplemented diabetic mice. Liver steatosis induced by STZ was ameliorated by EC supplementation. Furthermore, in vitro insulinotrophic effect of EC extract was observed in pancreatic β-islets. CONCLUSIONS This study demonstrated that EC is a potent and efficacious hypoglycemic and hypolipidemic agent, and prevents the loss of β-cell mass resulting in increase of insulin secretary capacity.
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Affiliation(s)
- Mi-Ja Kim
- Department of Food and Biotechnology, Hanseo University, Seosan, Republic of Korea
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167
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Abstract
Intra-osseous haemangioma is a rare, benign neoplasm that usually involves the vertebrae and craniofacial bones. Furthermore, its occurrence in the long bones is extremely rare. We report the findings of fluorine-18-fludeoxyglucose ((18)F-FDG) positron emission tomography (PET)/CT and MRI in a patient with intra-osseous haemangioma in the proximal tibia, who was initially misdiagnosed as having a malignancy based on (18)F-FDG PET/CT. (18)F-FDG PET/CT showed a well-marginated osteolytic lesion with abnormal FDG uptake. The mass demonstrated low signal intensity on T(1) weighted MRI. On T(2) weighted images, the lesion appeared as a cluster of high signal intensity lobules and showed strong enhancement on contrast-enhanced T(1) weighted images. Surgical curettage was performed and histopathological examination of the excised tissue confirmed a cavernous haemangioma.
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Affiliation(s)
- J G Cha
- Department of Radiology, Soonchunhyang University Bucheon Hospital, Bucheonsi, Gyeonggido, Republic of Korea.
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168
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Abstract
Intestinal glucose uptake is mainly performed by its specific transporters, SGLT1 and GLUTs expressed in the intestinal epithelial cells. By using Caco -2 cells and 2-NBDG, we observed that intestinal glucose uptake was markedly inhibited by pomegranate (Punica granatum L, PG) among 200 screened edible Korean plants. The effects of the PG extract on Na +-dependent glucose uptake were further evaluated using brush border membrane vesicles (BBMV) obtained from the mouse small intestine. PG inhibited Na +-dependent glucose uptake with the IC50 value of 424 μg/ml. The SGLT1 protein expression was dose dependently down regulated with PG treatment in Caco -2 cells. We next assessed the antihyperglycemic effect of PG in streptozotocin (STZ)-induced diabetic mice. Administration of PG (800 mg/kg) to STZ mice for four weeks improved postprandial glucose regulation. Furthermore, elevated Na +-dependent glucose uptake by BBMV isolated from STZ mice was normalized by PG treratment. These results suggest that PG could play a role in controlling the dietary glucose absorption at the intestinal tract by decreasing SGLT1 expression, and may contribute to blood glucose homeostasis in the diabetic condition.
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Affiliation(s)
- Hye Kyung Kim
- Department of Food and Biotechnology, Hanseo University, Seosan 356-706, Republic of Korea
| | - Soon-Sun Baek
- Ginseng Research Institute, R&D Headquarters, Korea Ginseng Corporation, Daejeon 305-345, Republic of Korea
| | - Hong-Yon Cho
- Department of Food and Biotechnology, Korea University, Jochiwon 339-700, Republic of Korea
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Kim HK, Choi HH, Huh S. Cystic adventitial disease of the popliteal artery: a recurrent case after cyst wall excision . INT ANGIOL 2012; 31:198-201. [PMID: 22466987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Although atherosclerosis remains the most common cause of lower limb ischemia, cystic adventitial disease (CAD) must be considered in the differential diagnosis of a patient without risk factors for atherosclerosis. The disease typically produces lower limb claudication and usually affects young and middle-aged men. The treatment consists of interposition grafting in cases with an occluded artery, but the treatment of stenotic lesions without arterial occlusion is controversial whether evacuation with cyst wall excision or interposition grafting. We report a case of CAD of the popliteal artery in a 70-year-old man with recurrence two years after cyst wall excision. This case suggests that complete cyst wall excision and regular follow-up are crucial in the management of stenotic lesion with CAD.
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Affiliation(s)
- H K Kim
- Division of Transplantation and Vascular Surgery, Department of Surgery. Kyungpook National University School of Medicine, Daegu, South Korea
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170
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Flexman ML, Kim HK, Stoll R, Khalil MA, Fong CJ, Hielscher AH. A wireless handheld probe with spectrally constrained evolution strategies for diffuse optical imaging of tissue. Rev Sci Instrum 2012; 83:033108. [PMID: 22462907 PMCID: PMC3360692 DOI: 10.1063/1.3694494] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Accepted: 02/28/2012] [Indexed: 05/26/2023]
Abstract
We present a low-cost, portable, wireless diffuse optical imaging device. The handheld device is fast, portable, and can be applied to a wide range of both static and dynamic imaging applications including breast cancer, functional brain imaging, and peripheral artery disease. The continuous-wave probe has four near-infrared wavelengths and uses digital detection techniques to perform measurements at 2.3 Hz. Using a multispectral evolution algorithm for chromophore reconstruction, we can measure absolute oxygenated and deoxygenated hemoglobin concentration as well as scattering in tissue. Performance of the device is demonstrated using a series of liquid phantoms comprised of Intralipid(®), ink, and dye.
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Affiliation(s)
- M L Flexman
- Department of Biomedical Engineering, Columbia University, New York, New York 10027, USA.
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171
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Kim HK, Leem KH, Lee S, Kim BY, Hahm YT, Cho HY, Lee JY. Effect of high hydrostatic pressure on immunomodulatory activity of cloudy apple juice. Food Sci Biotechnol 2012. [DOI: 10.1007/s10068-012-0022-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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Affiliation(s)
- Hye Kyung Kim
- Laboratory of Translational Genomics, Division of Cancer Epidemiology and Genetics, Department of Health and Human Services, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892-4608, USA
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173
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Park KY, Kim HK, Li K, Kim BJ, Seo SJ, Kim MN, Hong CK. Photodynamic therapy: new treatment for refractory lymphocytic infiltration of the skin. Clin Exp Dermatol 2012; 37:235-7. [PMID: 22299667 DOI: 10.1111/j.1365-2230.2011.04189.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Lymphocytic infiltration of the skin (LIS) is a relatively uncommon skin condition, first described by Jessner and Kanof in 1953. LIS presents mainly on the face, in particular on the cheeks and earlobe, but also on the neck, upper trunk or proximal limbs of middle-aged adults. LIS is often resistant to treatment. Photodynamic therapy (PDT) refers to the process of applying a topical prodrug, such as 5-aminolaevulinic acid (ALA) or methyl 5-aminolaevulinic acid (MAL), followed by irradiation with visible or ultraviolet light. The prodrug is converted by target tissue to photoactive porphyrins, which lead to local tissue destruction when activated by light. We describe a 48-year-old woman with refractory LIS, who was treated with MAL-PDT.
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Affiliation(s)
- K Y Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
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174
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Affiliation(s)
- Sun Mi Lim
- Research Institute of Healthcare Policy, Korean Medical Association, Seoul, Korea
| | - Kyung Hwa Seo
- Research Institute of Healthcare Policy, Korean Medical Association, Seoul, Korea
| | | | - Yoon Hyung Park
- Research Institute of Healthcare Policy, Korean Medical Association, Seoul, Korea
- Department of Preventive Medicine, Soonchunhyang University College of Medicine, Cheonan, Korea
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175
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Flexman ML, Kim HK, Lim E, Desperito E, Barbour RL, Hershman DL, Hielscher AH. P2-10-09: Detecting Breast Cancer with Dynamic Diffuse Optical Tomographic Imaging. Cancer Res 2011. [DOI: 10.1158/0008-5472.sabcs11-p2-10-09] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Over the last decade diffuse optical tomography (DOT) has emerged as a novel medical imaging modality. Near-infrared light is used to non-invasively probe biological tissue, and three-dimensional (3D) maps of blood-dependent parameters can be obtained. Several studies are underway to show the clinical utility of DOT for imaging brain disease, joint disease, and breast cancer. Here we present the largest clinical study to date that uses hemodynamic effects caused by a simple breath hold to identify breast tumors using DOT.
Methods: We have designed and built a DOT breast imaging system that can acquire full 3D data sets within a fraction of a second. The system affords the ability to study fast hemodynamic effects in both breasts simultaneously. Using non-compressive imaging heads we measured the oxygenated and deoxygenated hemoglobin levels in the breasts of 15 patients whose mammogram showed a mass >1 cm (4 benign, 11 malignant) and 3 healthy controls. Data was acquired over the course of a 30-second breath hold and 30 seconds thereafter. In addition, a baseline measurement of 30 seconds prior to the breath hold was obtained. A multi-wavelength image reconstruction algorithm was used to create 3D maps of hemoglobin-dependent parameters (Δ[HbO2] and Δ[Hb]) in the breast every 0.58 seconds, over the course of the 90-second experiment. An image analysis algorithm identified regions of peak percentage change in [Hb] and [HbO2] in the breast and then computed the average hemoglobin levels in those regions.
Results: We observed an increase in the hemoglobin levels in all breasts during the breath hold. Upon resuming breathing, these hemoglobin levels returned to baseline. Tumor bearing breasts showed a statistically significant slower return to baseline than healthy breasts. In particular, we found that tumors can be detected by a substantially larger Δ[Hb] value as compared to normal tissue in images acquired 15 seconds following the end of the breath hold. In 10 of 11 patients the malignant tumor was identified using this technique, suggesting sensitivity over 90%. No regions of increased Δ[Hb] were seen in the healthy breasts, or in the breasts with benign masses. The peak percentage change in [Hb] at the 15 second post-breath hold time point was 10.0 ± 6.0% (n=11) in the malignant tumors compared to 1.4 ± 0.5% (n=3) (p=0.001) in healthy patients and 4.8 ± 1.9% in benign masses (n=4)(p=0.03).
Discussion: A breath hold impedes venous return to the heart, which causes pooling of blood in the breast. This is observed as an increase in [Hb] and [HbO2] using DOT. Tumor vasculature is known to be more disorganized, tortuous, and leakier than normal vasculature. Therefore, once the breath hold is released and blood is allowed to drain from the breast, blood accumulated in the tumor during the breath hold will drain more slowly than blood in healthy tissue. This study has shown that DOT allows us to visualize these hemodynamic effects and use them to detect tumors with a simple breath hold and compression-free imaging head. Future studies need to explore the detection limits and general clinical utility of this technique for screening, differentiating malignant from benign masses, and treatment monitoring.
Citation Information: Cancer Res 2011;71(24 Suppl):Abstract nr P2-10-09.
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Affiliation(s)
- ML Flexman
- 1Columbia University, New York, NY; State University of New York, Brooklyn, NY
| | - HK Kim
- 1Columbia University, New York, NY; State University of New York, Brooklyn, NY
| | - E Lim
- 1Columbia University, New York, NY; State University of New York, Brooklyn, NY
| | - E Desperito
- 1Columbia University, New York, NY; State University of New York, Brooklyn, NY
| | - RL Barbour
- 1Columbia University, New York, NY; State University of New York, Brooklyn, NY
| | - DL Hershman
- 1Columbia University, New York, NY; State University of New York, Brooklyn, NY
| | - AH Hielscher
- 1Columbia University, New York, NY; State University of New York, Brooklyn, NY
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Kim HK, Choi BR, Bak YO, Zhao C, Lee SW, Jeon JH, So I, Park JK. The role of capillarisin from Artemisia capillaris on penile erection. Phytother Res 2011; 26:800-5. [PMID: 22072532 DOI: 10.1002/ptr.3635] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2011] [Revised: 08/13/2011] [Indexed: 11/09/2022]
Abstract
The objective of this study was to evaluate the effect and mechanism of capillarisin from Artemisia capillaris (A. capillaris) on rabbit penile corpus cavernosum (PCC). The pre-contracted New Zealand White rabbit (2.5-3.0 kg) penis with phenylephrine (Phe; 10⁻⁵ M) was treated with various concentrations of ethanol extract of A. capillaris (0.1, 0.5, 1, and 2 mg/mL) and capillarisin, the active component of A. capillaris (10⁻⁷, 10⁻⁶, 10⁻⁵ and 10⁻⁴ M). Capillarisin was also applied to PCC tissues contracted with Phe, which were pre-incubated with phosphodiesterase type 5 inhibitors (PDE5 Is). Cyclic nucleotides in the perfusate were measured by radioimmunoassay. The tissues were pre-incubated with Nω nitro-l-arginine-methyl ester (L-NAME, 10⁻³ M) and 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one (ODQ, 10⁻⁵ M) to block nitric oxide (NO) synthase and guanylate cyclase, respectively. Capillarisin induced penile relaxation and enhanced PDE5 Is-induced relaxation. Capillarisin increased cGMP and cAMP in the perfusate. The application of capillarisin on PCC pre-treated with L-NAME and ODQ significantly inhibited the relaxation. Capillarisin exerts the relaxing effect on PCC by activating the NO-cGMP and adenylyl cAMP signaling pathways and may become an alternative medicine for patients who want to use natural products to improve erectile function or do not completely respond to PDE5 Is.
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Affiliation(s)
- Hye Kyung Kim
- Department of Urology of Medical School and Institute for Medical Sciences, Chonbuk National University, and Research Institute and CTC of Medical Device of Chonbuk National University Hospital, Jeonju 561-712, Republic of Korea
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177
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Bae SJ, Choe JW, Chung YE, Kim BJ, Lee SH, Kim HY, Koh JM, Kim HK, Kim GS. The association between serum osteocalcin levels and metabolic syndrome in Koreans. Osteoporos Int 2011; 22:2837-46. [PMID: 21153019 DOI: 10.1007/s00198-010-1504-y] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2010] [Accepted: 11/12/2010] [Indexed: 01/06/2023]
Abstract
UNLABELLED The association between serum osteocalcin levels and metabolic syndrome (MS) in Korean individuals was investigated. Serum osteocalcin levels are significantly lower in subjects with MS than in those without the disease, regardless of glucose metabolism. INTRODUCTION Osteocalcin was recently shown to affect energy metabolism. In the present study, we investigated the possible association between serum osteocalcin concentrations and MS. METHODS A cross-sectional community-based survey was conducted. Serum osteocalcin, type 1 collagen C-telopeptide (CTX) and total alkaline phosphatase (ALP) concentrations were determined in 567 subjects. MS was defined according to NCEP-ATP III criteria. RESULTS Serum osteocalcin concentrations were significantly lower in subjects with MS than those without MS in postmenopausal women (18.923 ± 7.685 vs 22.513 ± 7.344 ng/ml, P<0.001) and marginally lower in subjects with MS than those without MS in men (14.550 ± 5.090 vs 16.125 ± 4.749 ng/ml, P=0.086) after adjustment for age and BMI. Further controlling with CTX or ALP did not affect this association in postmenopausal women; however, controlling with osteocalcin abolished the association between CTX and MS. Significant differences in serum osteocalcin levels by MS status were noted in subjects with normal glucose tolerance as well as those with abnormal glucose tolerance (P=0.032 and P<0.001, respectively). Compared with subjects with the highest quartile of osteocalcin, those in the lower quartile groups (Q1-Q3) had significantly increased risks of MS (ORs=5.18, CIs=1.15-23.42) in men. In postmenopausal women, the ORs for MS were significantly higher in the lowest quartile than in the highest quartile (ORs=5.25, CIs=2.42-11.36). CONCLUSIONS These findings suggest that osteocalcin is associated with MS, independently of glucose metabolism.
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Affiliation(s)
- S J Bae
- Health Promotion Center, Asan Medical Center, University of Ulsan College of Medicine, 388-1 Poongnap 2-Dong, Songpa-Gu, Seoul, Republic of Korea
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Kim JH, Kim HK, Nguyen VG, Park BK, Choresca CH, Shin SP, Han JE, Jun JW, Park SC. Genomic sequence of infectious hypodermal and hematopoietic necrosis virus (IHHNV) KLV-2010-01 originating from the first Korean outbreak in cultured Litopenaeus vannamei. Arch Virol 2011; 157:369-73. [PMID: 22038073 DOI: 10.1007/s00705-011-1155-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2011] [Accepted: 10/17/2011] [Indexed: 11/25/2022]
Abstract
Due to the need to track and monitor genetic diversity, the genome of the infectious hypodermal and hematopoietic necrosis virus (IHHNV) strain KLV-2010-01 in cultured Litopenaeus vannamei shrimp that originated from the first Korean outbreak in 2010 was sequenced and analyzed. The genome, with a length of 3914 nucleotides, was sequenced from the Korean IHHNV. The genome encoded three large and overlapping open reading frames: ORF1 (NS-1) of 2001 bp, ORF2 (NS-2) of 1092 bp and ORF3 (capsid protein) of 990 bp. The overall organization, size and predicted amino acid sequence of the three ORFs in Korean IHHNV were highly similar to those of members of the infectious IHHNV group, and the most closely related strains were IHHNVs described from Ecuador and Hawaii. Additionally, phylogenetic analysis showed that the Korean IHHNV was clustered with lineage III in the infectious IHHNV group and was most similar to IHHNV isolates from Ecuador, China and Taiwan.
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Affiliation(s)
- J H Kim
- Laboratory of Aquatic Animal Medicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 151-742, Republic of Korea
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Kang MW, Lee ES, Yoon SY, Jo J, Lee J, Kim HK, Choi YS, Kim K, Shim YM, Kim J, Kim H. AKR1B10 is associated with smoking and smoking-related non-small-cell lung cancer. J Int Med Res 2011; 39:78-85. [PMID: 21672310 DOI: 10.1177/147323001103900110] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
This prospective study explored the relationship between expression of AKR1B10 mRNA and various clinical parameters in non-small-cell lung cancer (NSCLC) in terms of its validation as a marker for NSCLC. Tumour tissue samples were collected from 229 patients with NSCLC. Tissue samples from adjacent non-malignant lung tissue (> 5 cm from the tumour) of 89 of these patients and samples from 20 patients with benign lung disease were used as controls. Quantitative reverse transcription- polymerase chain reaction showed significantly higher levels of AKR1B10 mRNA expression in NSCLC tumour tissue than in adjacent non-malignant lung tissue and benign lung tissue. Statistically significant factors for AKR1B10 mRNA over-expression were found to be male gender, smoking, squamous cell carcinoma and moderate or poor cell differentiation. It is concluded that AKR1B10 seems to have potential as a prognostic marker for NSCLC and warrants further investigation.
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Affiliation(s)
- M-W Kang
- Cancer Research Centre, Centre for Clinical Research, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea
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Han DH, Lee JH, Kim H, Ko MK, Chae MR, Kim HK, So I, Jeon JH, Park JK, Lee SW. Effects of Schisandra chinensis extract on the contractility of corpus cavernosal smooth muscle (CSM) and Ca2+ homeostasis in CSM cells. BJU Int 2011; 109:1404-13. [DOI: 10.1111/j.1464-410x.2011.10567.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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181
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Abstract
The present study was performed to examine the effects of garlic on obesity and blood lipid profiles in high-fat induced obesity mice model, and to elucidate the molecular mechanisms responsible for such effect. C57BL/6 mice were fed a standard diet (STD) or high-fat diet (HFD) for 5 weeks to induce obesity. Mice were then randomly divided into four groups with 10 mice per group, and fed experimental diet for 4 weeks; STD group, HFD group, HFD containing 2% or 4% garlic group (HFD + G2 or HFD + G4, respectively). Administration of garlic significantly reduced HFD-induced body weight, epididymal fat accumulation, hyperlipidemia and hypercholesterolemia. Consequently, the atherogenic indexes were reduced by 83% and 91%, respectively, in 2% and 4% garlic supplemented group. Liver steatosis induced by HFD was ameliorated by garlic supplementation. Furthermore, garlic affected the down regulation of expression patterns of epididymal adipose tissue genes such as peroxisome proliferator-activated receptor γ (PPARγ), acetyl CoA carboxylase (ACC), adipose specific fatty acid binding protein (aP2), and glycerol-3-phosphate dehydrogenase (GPDH). These results suggest that garlic may have a potential benefit in preventing obesity.
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Affiliation(s)
- M-J Kim
- Kyunghee University Department of Pharmacology, School of Medicine, Seoul 130-701, South Korea
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182
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Kim TM, Ha SA, Kim HK, Yoo J, Kim S, Yim SH, Jung SH, Kim DW, Chung YJ, Kim JW. Gene expression signatures associated with the in vitro resistance to two tyrosine kinase inhibitors, nilotinib and imatinib. Blood Cancer J 2011; 1:e32. [PMID: 22829191 PMCID: PMC3255246 DOI: 10.1038/bcj.2011.32] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2011] [Accepted: 07/07/2011] [Indexed: 01/12/2023] Open
Abstract
The use of selective inhibitors targeting Bcr-Abl kinase is now established as a standard protocol in the treatment of chronic myelogenous leukemia; however, the acquisition of drug resistance is a major obstacle limiting the treatment efficacy. To elucidate the molecular mechanism of drug resistance, we established K562 cell line models resistant to nilotinib and imatinib. Microarray-based transcriptome profiling of resistant cells revealed that nilotinib- and imatinib-resistant cells showed the upregulation of kinase-encoding genes (AURKC, FYN, SYK, BTK and YES1). Among them, the upregulation of AURKC and FYN was observed both in nilotinib- and imatinib-resistant cells irrespective of exposure doses, while SYK, BTK and YES1 showed dose-dependent upregulation of expression. Upregulation of EGF and JAG1 oncogenes as well as genes encoding ATP-dependent drug efflux pump proteins such as ABCB1 was also observed in the resistant cells, which may confer alternative survival benefits. Functional gene set analysis revealed that molecular categories of ‘ATPase activity', ‘cell adhesion' or ‘tyrosine kinase activity' were commonly activated in the resistant clones. Taken together, the transcriptome analysis of tyrosine kinase inhibitors (TKI)-resistant clones provides the insights into the mechanism of drug resistance, which can facilitate the development of an effective screening method as well as therapeutic intervention to deal with TKI resistance.
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183
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Kim SH, Choi EM, Chang CH, Kim HK, Chung MH, Choi YR. Comparison of the effect-site concentrations of remifentanil for Streamlined Liner of the Pharynx Airway (SLIPA) versus laryngeal mask airway SoftSealTM insertion during target-controlled infusion of propofol. Anaesth Intensive Care 2011; 39:611-7. [PMID: 21823378 DOI: 10.1177/0310057x1103900412] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
This study was designed to determine the optimal dose of remifentanil required for the successful insertion of Streamlined Liner of the Pharynx Airway (SLIPA) and to compare it to that required for laryngeal mask airway (LMA) insertion in patients receiving a propofol infusion at a standard effect-site concentration. Fifty-eight patients scheduled to undergo general anaesthesia were randomly assigned to either the SLIPA (n = 29) or LMA (n = 29) group. All patients were premedicated with midazolam 0.05 mg x kg(-1) and glycopyrrolate 0.004 mg x kg(-1) intramuscularly. After the administration of lignocaine 1 mg x kg(-1) intravenously, a propofol infusion was started at an effect-site concentration of 3.5 microg x ml(-1) with a remifentanil infusion without a neuromuscular blocking agent. The remifentanil dose was determined by the modified up-and-down method starting in each group at 4 ng x ml(-1). Six minutes after induction, the airway device was inserted. Airway device insertion was classified as 'success' or 'failure' based on patient response. From the isotonic regression analysis and bootstrap distribution, the EC50 of remifentanil for SLIPA and LMA were 0.93 ng x ml(-1) (95% confidence interval [CI] 0.81 to 1.50 ng x ml(-1) and 1.36 ng x ml(-1) (95% CI 1.19 to 2.06 ng x ml(-1)) respectively, and the EC95 for SLIPA and LMA insertions were 1.90 ng x ml(-1) (95% CI 1.39 to 1.95) and 2.43 ng x ml(-1) (95% CI 1.80 to 2.46 ng x ml(-1)) respectively. Using the 83% CIs from the bootstrap distribution, EC50 for SLIPA was significantly less than that of LMA (0.83 to 1.23 vs 1.26 to 2.00, respectively) (P < 0.05). These findings suggest that the insertion of SLIPA needs about a 32% lower depth of anaesthesia than LMA insertion.
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Affiliation(s)
- S H Kim
- Department of Anesthesiology and Pain Medicine, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Republic of Korea
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184
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Abstract
Our objective is to correlate the anatomical exposure provided by complex skull base approaches to the lateral skull base with their CT and MRI scans counterparts and to introduce a modular concept emphasizing the derivation of complex skull base approaches from simpler ones.We executed 10 lateral approaches to the skull base in 20 embalmed cadaveric heads (40 sides). Each approach was executed a minimum of three times on each specimen. These approaches were the pterional and its modifications, the subtemporal and its modifications, and the suboccipital and its modifications. We correlated the approaches and the areas of the skull base exposed by scanning the surgical cavity filled with material imageable by CT and MRI and throughly surveying the operative field.Visualization of the area of the skull base exposed was excellent using our CT-MRI imageable cadaveric preparation. The topographic areas of the skull base exposed correlated well with their radiological counterparts.The areas of the skull base exposed by each of the complex surgical approaches to the skull base were clearly delineated by using our anatomo-radiological correlation. Complex approaches to the skull base are formed by simple neurosurgical approaches (building blocks) to which different modules are added.
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185
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Abstract
The obesity drug development is present not a bright and successful story. So far, drugs reported to be effective, either from synthetic or natural sources, mostly stimulated controversy because of serious adverse effects, which ended with stopping clinical trials or even withdrawal from the market. However, obesity and its comorbidities have become rapidly a major problem in both developed and developing countries. This has encouraged pharmaceutical companies and academia to keep on struggling on developing novel effective but safe obesity drugs, and on characterizing novel obesity drug targets. From existing scientific work on obesity drug discovery and commercial slimming preparations, compounds originating from nature, especially from plants, seem to be the first choice. Traditional belief that herbal medicine is safer than synthetic ones is one of the classical arguments, although scientifically this is not always true (e.g. ban on Ephedra). But in general, it has been widely acknowledged that a plant compound, with its unique scaffolds and rich diversity is an unlimited source of novel lead compounds. This paper aims to summarize all works focused on screening plant materials by targeting important pathways related to energy intake regulation, either by in vivo or in vitro experiments.
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Affiliation(s)
- N D Yuliana
- Department of Pharmacognosy, Section of Metabolomics, Leiden University, Leiden, The Netherlands
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186
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Choi SJ, Lee JH, Heo HJ, Cho HY, Kim HK, Kim CJ, Kim MO, Suh SH, Shin DH. Punica granatum protects against oxidative stress in PC12 cells and oxidative stress-induced Alzheimer's symptoms in mice. J Med Food 2011; 14:695-701. [PMID: 21631359 DOI: 10.1089/jmf.2010.1452] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Alzheimer's disease (AD) is a progressive degenerative brain disorder that is characterized by neuronal loss, neurofibrillary tangles, and the abnormal deposition of senile plaque and amyloid β peptide (Aβ). The brains of AD patients are under intense oxidative stress. The overproduction of Aβ leads to Aβ-associated free radical oxidative stress. In this study, the antioxidative and neuronal protective effects of Punica granatum extract were investigated against oxidative stress-induced cytotoxicity in PC12 cells. The ethanol extracts of P. granatum protected PC12 cells from hydrogen peroxide (H₂O₂-induced oxidative stress. 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide reduction assays revealed a significant increase in cell viability when oxidatively stressed PC12 cells were treated with the P. granatum extract. To examine the effects of P. granatum on Aβ₁₋₄₂-induced learning and memory impairment in mice, in vivo behavioral tests were performed. Treatment with the extract of P. granatum increased step-through latency in mice injected with Aβ₁₋₄₂. The results of this study suggest that the ethanol extract of P. granatum mitigated H₂O₂-induced oxidative stress in PC12 cells. In addition, the extract inhibited neuronal cell death caused by Aβ-induced oxidative stress and Aβ-induced learning and memory deficiency.
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Affiliation(s)
- Soo Jung Choi
- School of Life Science and Biotechnology, Korea University, Seoul, Korea
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187
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Lee EN, Choi YW, Kim HK, Park JK, Kim HJ, Kim MJ, Lee HW, Kim KH, Bae SS, Kim BS, Yoon S. Chloroform extract of aged black garlic attenuates TNF-α-induced ROS generation, VCAM-1 expression, NF-κB activation and adhesiveness for monocytes in human umbilical vein endothelial cells. Phytother Res 2011; 25:92-100. [PMID: 20623600 DOI: 10.1002/ptr.3230] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Aged black garlic is a type of fermented garlic (Allium sativum) which has been used in Oriental countries for a long time because of various biological properties of garlic derivatives. The current study explored the potential of the chloroform extract of aged black garlic (CEABG) in attenuating the activities of adhesion molecules in tumor necrosis factor-α (TNF-α)-stimulated human umbilical vein endothelial cells (HUVECs). The study was performed on HUVECs that were pretreated with 30 μg/mL of CEABG before TNF-α treatment. Treatment of HUVECs with CEABG significantly inhibited TNF-α-induced reactive oxygen species (ROS) formation. HUVECs treated with CEABG showed markedly suppressed TNF-α-induced mRNA expression of VCAM-1, but little alteration in ICAM-1 and E-selectin mRNA expression. CEABG treatment also significantly decreased the TNF-α-induced cell surface and total protein expression of VCAM-1 without affecting ICAM-1 and E-selectin expression. In addition, treatment of HUVECs with CEABG markedly reduced THP-1 monocyte adhesion to TNF-α-stimulated HUVECs. Furthermore, CEABG significantly inhibited NF-κB transcription factor activation in TNF-α-stimulated HUVECs. The data provide new evidence of the antiinflammatory properties of CEABG that may have a potential therapeutic use for the prevention and treatment of vascular diseases such as atherosclerosis through mechanisms involving the inhibition of VCAM-1 expression and NF-κB activation in vascular endothelial cells.
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Affiliation(s)
- Eun Na Lee
- Department of Anatomy, School of Medicine, Pusan National University, Yangsan, Korea
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188
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Kim HK, Chanock SJ, Fang J, Collins I, Amundadottir L. Abstract 1170: MicroRNA gene polymorphisms in cancer susceptibility loci 5p12, 8q24 and 11q13. Cancer Res 2011. [DOI: 10.1158/1538-7445.am2011-1170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Using Genome Wide Association Studies (GWAS), we and others have previously identified and replicated genetic variations in chromosome 5p12, 8q24 and 11q13. Interestingly, the majority of risk-associated variations map to non-coding regions of the genome and thus, the molecular mechanism of single nucleotide polymorphisms (SNPs) underlying increased cancer risk remains unknown. To assess whether these SNPs could affect the biogenesis and function of non-coding RNA species, such as microRNAs (miRNA), here we assessed miRNA gene polymorphisms in these cancer susceptibility loci. We catalogued two miRNA genes in 5p12, sixteen miRNA genes in 8q24, and seven miRNA genes in 11q13. We re-sequenced the pri- and pre-miRNA genomic sequences in these loci using HapMap DNA samples. As a result, in 8q24 miRNA genes, we identified three new SNPs and confirmed two previously reported SNPs. In 11q13, we identified four genetic variations within different miRNA genes. However, linkage disequilibrium plot analysis of both loci didn't show any statistically significant association of any of these SNPs with their corresponding GWAS signals. Thus, we consider it unlikely that miRNA in these regions are direct downstream effectors of cancer-associated genetic variations. Nevertheless, because these risk loci are prone to genomic instability, we assessed whether the SNPs could affect miRNA gene expression since indirect associations with increased cancer susceptibility can't be excluded. To address this question, we cloned pre-miRNA genes from these loci, with or without genetic variations, into miRNA expression vectors and determined their relative expression in transfected 293T cells. We tested for an 8q24-encoded miRNA (miR-1206) or an 11q13 encoded-miRNA (miR-612) expression using miRNA TaqMan assays, and we found that the G allele polymorphism (rs2114358) in miR-1206 significantly downregulated miRNA expression levels compared to the reference A allele. On the other hand, an rs550894 (C/A) in miR-612 significantly upregulated miRNA expression levels compared to that of the reference C allele. These data indicate that the miRNA SNPs in these loci have indeed functional consequences that lead to dysregulation of miRNA biogenesis. Whether such changes in miRNA expression could also result in increased cancer risk needs to be assessed in future studies by identifying the downstream target genes of these miRNAs.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 102nd Annual Meeting of the American Association for Cancer Research; 2011 Apr 2-6; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2011;71(8 Suppl):Abstract nr 1170. doi:10.1158/1538-7445.AM2011-1170
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Park JS, Kim HK, Kim K, Kim J, Shim YM, Choi YS. Prediction of acute pulmonary complications after resection of lung cancer in patients with preexisting interstitial lung disease. Thorac Cardiovasc Surg 2011; 59:148-52. [PMID: 21480134 DOI: 10.1055/s-0030-1250644] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
INTRODUCTION Interstitial lung disease (ILD) is associated with a high morbidity from acute pulmonary complications, such as acute lung injury (ALI) or acute respiratory distress syndrome (ARDS), after pulmonary resection. This study attempts to uncover the risk factors for postoperative ALI/ARDS in lung cancer patients with ILD. MATERIALS AND METHODS We retrospectively reviewed 100 patients with ILD who underwent curative lung resection for lung cancer, from January 2000 to December 2008. RESULTS Of the 100 patients, 91 were male, and 9 were female. The median age was 66 years. Fifty-eight patients underwent a preoperative carbon monoxide diffusing capacity test (DLCo). Twelve pneumonectomies and 88 lobectomies were performed. Acute pulmonary complications were observed in 28 patients (13 with ALI and 15 with ARDS). Operative mortality was 14%. Cause of death was due to respiratory failure from ALI/ARDS in all patients, except in one patient who died due to complications of acute renal failure. For all 100 patients, univariate analysis revealed that preexisting comorbidities, such as ischemic heart disease, renal failure, COPD, and neoadjuvant treatment for lung cancer, were risk factors for the development of postoperative ALI/ARDS. For the 58 patients who underwent preoperative DLCo testing, significant univariate risk factors included preexisting comorbidities and decreased DLCo. Multivariate analysis did not show any significant risk factors for ALI/ARDS. CONCLUSIONS Preexisting comorbidities and decreased preoperative DLCo were the most significant risk factors for the development of acute pulmonary complications after pulmonary resection in patients with lung cancer and ILD.
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Affiliation(s)
- J S Park
- Department of Thoracic and Cardiovascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
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190
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Kim DH, Kim HK, Kim KM, Kim CK, Jeong MH, Ko CY, Moon KH, Kang JS. Antibacterial activities of macrolactin A and 7-O-succinyl macrolactin A from Bacillus polyfermenticus KJS-2 against vancomycin-resistant enterococci and methicillin-resistant Staphylococcus aureus. Arch Pharm Res 2011; 34:147-52. [PMID: 21468926 DOI: 10.1007/s12272-011-0117-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2010] [Revised: 10/15/2010] [Accepted: 10/18/2010] [Indexed: 11/25/2022]
Abstract
The principal objective of this study was to evaluate the antibacterial activities of macrolactin A (MA) and 7-O-succinyl macrolactin A (SMA) generated from Bacillus polyfermenticus KJS-2 against vancomycin-resistant enterococci (VREs) and methicillin-resistant Staphylococcus aureus. The minimal inhibitory concentrations (MICs) of MA and SMA against VREs were 16 and 2∼1 μg/mL, respectively, and the MICs of MA and SMA against methicillin-resistant Staphylococcus aureus were 2 and < 0.25 μg/mL, respectively. Their MIC values were comparable or superior to those of teicoplanin. In evaluating the inhibitory effects of intestinal VRE colonization in mice, the oral MA and SMA effected a rapid inhibition of intestinal VRE colonization in mice, and the intraperitoneal SMA also inhibited VRE colonization, whereas intraperitoneal MA did not.
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Affiliation(s)
- Dong Hee Kim
- Research and Development Center, Daewoo Pharm. Co. Ltd., Gimhae, Korea
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191
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Kim HK, Bak YO, Choi BR, Zhao C, Lee HJ, Kim CY, Lee SW, Jeon JH, Park JK. The Role of the Lignan Constituents in the Effect of Schisandra chinensis
Fruit Extract on Penile Erection. Phytother Res 2011; 25:1776-82. [DOI: 10.1002/ptr.3486] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2010] [Revised: 02/28/2011] [Accepted: 03/01/2011] [Indexed: 11/11/2022]
Affiliation(s)
- Hye Kyung Kim
- Department of Urology, Medical School, and Institute for Medical Sciences; Chonbuk National University, and Research Institute and CTC of Medical Device of Chonbuk National University Hospital; Jeonju 561-712 Republic of Korea
| | - Yun Ok Bak
- Department of Urology, Medical School, and Institute for Medical Sciences; Chonbuk National University, and Research Institute and CTC of Medical Device of Chonbuk National University Hospital; Jeonju 561-712 Republic of Korea
| | - Bo Ram Choi
- Department of Urology, Medical School, and Institute for Medical Sciences; Chonbuk National University, and Research Institute and CTC of Medical Device of Chonbuk National University Hospital; Jeonju 561-712 Republic of Korea
| | - Chen Zhao
- Department of Urology, Medical School, and Institute for Medical Sciences; Chonbuk National University, and Research Institute and CTC of Medical Device of Chonbuk National University Hospital; Jeonju 561-712 Republic of Korea
| | - Hee Ju Lee
- Natural Products Research Center; KIST Gangneung Institute; Daejeon-dong Gangneung 210-340 Republic of Korea
| | - Chul Young Kim
- Natural Products Research Center; KIST Gangneung Institute; Daejeon-dong Gangneung 210-340 Republic of Korea
| | - Sung Won Lee
- Department of Urology; Sungkyunkwan University Medical School; Seoul 135-710 Republic of Korea
| | - Ju Hong Jeon
- Department of Physiology; Seoul National University Medical School; Seoul 110-799 Republic of Korea
| | - Jong Kwan Park
- Department of Urology, Medical School, and Institute for Medical Sciences; Chonbuk National University, and Research Institute and CTC of Medical Device of Chonbuk National University Hospital; Jeonju 561-712 Republic of Korea
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192
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Meissner KM, Meyer zu Schwabedissen HM, Göpfert CG, Ding MD, Blood JB, Frey KF, Kim HK, Kharasch EK. UDP glucuronosyltransferase 2B7 single nucleotide polymorphism (rs7439366) influences heat pain response in human volunteers after i.v. morphine infusion. Crit Care 2011. [PMCID: PMC3067037 DOI: 10.1186/cc9783] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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193
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Park MH, Lee JW, Lee YI, Lee JH, Hwang JH, Kim HK, Yang CW. Patterning of catalysts for the selective growth of carbon nanotubes using laser irradiation of nickel nitrate. J Nanosci Nanotechnol 2011; 11:602-605. [PMID: 21446506 DOI: 10.1166/jnn.2011.3226] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We developed a simple method to produce patterned catalysts for the growth of carbon nanotubes (CNTs) on Si substrate using laser irradiation of Ni nitrate. We found that Ni nitrate can easily be decomposed into Ni oxide by KrF laser irradiation and that unexposed Ni nitrate can be removed using deionized (DI) water. Once we obtained patterned Ni oxide, we were able to synthesize multi-walled CNTs using a conventional thermal CVD. This new method does not require any photoresist or vacuum processes. Not only is the method compatible with low-temperature and large-area fabrication, it also significantly reduces the total processing steps required for conventional lithographic patterning technology. A detailed investigation of the decomposition process of this patterned catalyst and the microstructure of the patterned multi-walled CNTs was carried out using IR, SEM and TEM.
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Affiliation(s)
- M H Park
- School of Advanced Materials Science & Engineering and Center for Nanotubes & Nanostructured Composites, Sungkyunkwan University, Suwon 440-746, Korea
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195
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Kim JK, Choi SJ, Cho HY, Kim YJ, Lim ST, Kim CJ, Kim EK, Kim HK, Peterson S, Shin DH. Ipomoea batatas attenuates amyloid β peptide-induced neurotoxicity in ICR mice. J Med Food 2010; 14:304-9. [PMID: 21142943 DOI: 10.1089/jmf.2010.0047] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
In this study, the protective effects of 17 Korean native plants against amyloid β peptide (Aβ)-induced oxidative stress were screened using the 2',7'-dichlorofluorescin diacetate assay and the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. Ipomoea batatas exerted the highest protective effects against oxidative stress and was selected for further investigation. To confirm the protective activity of this extract, the I. batatas extract was fed to ICR mice that had been injected with Aβ to induce neuronal deficits. In these experiments, the extract of I. batatas significantly reversed Aβ-induced neurotoxicity as assessed by the passive avoidance test, a behavioral experiment. Moreover, I. batatas administration reduced the level of lipid peroxidation and increased catalase activities in biochemical studies using the brain tissue of mice. These results indicate that I. batatas might be beneficial against Alzheimer's disease, especially by limiting oxidative stress in the brain.
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Affiliation(s)
- Jae Kyeom Kim
- Department of Food and Biotechnology, Korea University, Seoul, Republic of Korea
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196
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Ko R, Cottrill M, Kim HK. The utility of using fiberoptic endoscopy in the diagnosis of nasal polyps. Allergy Asthma Clin Immunol 2010. [PMCID: PMC3374166 DOI: 10.1186/1710-1492-6-s2-p13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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197
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Kim DS, Kwon DY, Kim MS, Kim HK, Lee YC, Park SJ, Yoo WH, Chae SW, Chung MJ, Kim HR, Chae HJ. The involvement of endoplasmic reticulum stress in flavonoid-induced protection on cardiac cell death caused by ischaemia/reperfusion. J Pharm Pharmacol 2010; 62:197-204. [PMID: 20487199 DOI: 10.1211/jpp.62.02.0007] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
OBJECTIVES We have investigated whether endoplasmic reticulum stress and Bcl-2 proteins were linked to the protective effect exerted by flavonoids on ischaemia/reperfusion-induced cardiac damage. METHODS Cell viability and immunoblotting were performed. KEY FINDINGS H9c2 cardiac muscle cells were exposed to flavonoids such as biochanin A, daidzein, genistein, luteolin, quercetin and rutin, followed by ischaemia 12 h/reperfusion 4 h. The flavonoids protected against cell death induced by ischaemia/reperfusion. Flavonoid treatment significantly increased the expression level of the anti-apoptotic protein, Bcl-2, but decreased that of the proapoptotic protein, Bax. The flavonoids down-regulated the expression levels of endoplasmic reticulum stress proteins, glucose-regulated protein-78, activating transcription factor 6alpha, X-box binding protein 1, inositol-requiring protein-1, phosphor-eukaryotic initiation factor 2alpha, and C/EBP-homologous protein. CONCLUSIONS This study suggested that the protective mechanisms of flavonoids included regulation of Bcl-2/Bax proteins as well as the endoplasmic reticulum stress proteins.
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Affiliation(s)
- Do-Sung Kim
- Department of Pharmacology and Institute of Cardiovascular Research, Jeonju, Chonbuk, Republic of Korea
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198
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Kang S, Kim MJ, An H, Kim BG, Choi YP, Kang KS, Gao MQ, Park H, Na HJ, Kim HK, Yun HR, Kim DS, Cho NH. Proteomic Molecular Portrait of Interface Zone in Breast Cancer. J Proteome Res 2010; 9:5638-45. [DOI: 10.1021/pr1004532] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Suki Kang
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
| | - Min Ju Kim
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
| | - HeeJung An
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
| | - Baek Gil Kim
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
| | - Yoon Pyo Choi
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
| | - Kyu Sub Kang
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
| | - Ming-Qing Gao
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
| | - Hangran Park
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
| | - Hyung Jin Na
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
| | - Hye Kyung Kim
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
| | - Hae Ree Yun
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
| | - Dong Su Kim
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
| | - Nam Hoon Cho
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea, Department of Pathology, Pundang CHA Medical Hospital, Sungnam, Kyunggio province, Korea, Brain Korea 21 Project for Medical Science, Seoul, Korea, and Genomine Research Division, Genomine, Inc., Pohang, Kyungbuk, Korea
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Jung ME, Cho GM, Byun SW, Do KR, Kim HK, Cho YS, Chae HS, Shin OR, Kim SS. Colitis cystica profunda presenting with a mucus pool within the stalk of a pedunculated colon polyp. Endoscopy 2010; 42 Suppl 2:E114-5. [PMID: 20306399 DOI: 10.1055/s-0029-1243981] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- M E Jung
- Department of Internal Medicine, Uijongbu St Mary Hospital, The Catholic University of Korea, Uijongbu, Korea
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Abstract
The aim of this study was to evaluate the feasibility of dual localisation with hookwire and lipiodol before needlescopy-assisted resection for pulmonary nodule. Computed tomography-guided dual marking was performed on 36 pulmonary nodules of 32 patients and needlescopy-assisted resection was performed monitored by C-arm fluoroscopy. The mean age of the patients was 58 ± 12 (range 12-77) yrs. The mean size of the nodules was 7.5 ± 3.7 (3-17) mm. Their mean distance from the pleural surface was 7.3 ± 7.5 (0-35) mm. There were nine pure ground-glass opacity lesions, five semi-solid lesions and 22 solid lesions. The time of the dual localisation procedure was 13.1 ± 4.8 (7-23) min. Complications of the marking were pneumothorax in nine patients, and intrapulmonary bleeding in three. One hookwire dislodged during the operation. All nodules were successfully resected under needlescopy without conversion to a conventional thoracoscopy (5 mm or 10 mm thoracoscopy) or a minithoracotomy. There was no complication related to needlescopy-assisted resection. Dual marking with hookwire and lipiodol is a safe and none time consuming procedure, and needlescopy-assisted lung resection for small nodules is technically feasible and useful for histological diagnosis and treatment.
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Affiliation(s)
- D-Y Kang
- Dept of Thoracic and Cardiovascular Surgery, Korea University Guro Hospital, Korea University College of Medicine, Guro-gu, Seoul 152-703, Korea.
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