Tae In Park

Kyungpook National University Hospital, Sŏul, Seoul, South Korea

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Publications (26)50.02 Total impact

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    ABSTRACT: Intravascular lymphoma (IVL) is a rare disorder characterized by the presence of large neoplastic lymphoid cells restricted to the lumens of small vessels with a predilection for the skin and the central nervous system. While the vast majority of cases involving IVL are of B-cell lineage, the disease rarely affects the T-cell, the histiocytes, and the natural killer cells. We report a case of intravascular T-cell lymphoma (IVTL) associated with Epstein-Barr virus (EBV). A 23-year-old healthy woman presented with tender indurated erythematous patches with overlying telangiectasia on her right breast, abdomen, both the upper and the lower extremities and the back for 3 months. The pathology revealed an infiltration of dermal and subcutaneous vessels by large and atypical lymphoid cells with immunohistochemical features of the T-cell lineage with a cytotoxic phenotype (CD3+, CD8+, granzyme B+, TIA-1+, CD4-, CD5-, CD20-, CD56-). Interestingly, the DNA extracted from the skin biopsies demonstrated evidence of a monoclonal immunoglobulin heavy chain gene rearrangement, but no T-cell receptor gene rearrangement was found. In situ hybridization study for EBV-encoded RNA was positive. She was diagnosed with an EBV-associated IVTL. The patient's skin lesions were refractory to the combination of chemotherapy and autologous stem cell transplant, and she expired. The findings in the present case may highlight the unique clinicopathologic aspects of EBV-associated cytotoxic IVTL that occurred in a young, immunocompetent woman.
    Annals of Dermatology 08/2014; 26(4):496-500. · 0.61 Impact Factor
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    ABSTRACT: Sialolipoma, a rare tumor of the salivary gland, is a recently described variant of salivary gland lipoma. Oncocytic sialolipoma was first described by Pusiol et al. in 2009. We report the case of an oncocytic sialolipoma of the submandibular gland in a 43-year-old female. Excision of the tumor was performed with preservation of the submandibular gland. The tumor had a thin, fibrous capsule and consisted of abundant adipose tissue, an oncocytic nodule, and scattered normal glandular structures surrounded by adipose tissue. Four cases of sialolipoma of the submandibular gland, including the present case, were reviewed. All 4 tumors were developed on the right submandibular glands, with a composition of adipose tissue as high as that of sialolipoma of the parotid gland; in contrast to previous reports, three cases were in females. As newly described tumor type, care should be taken to distinguish oncocytic sialolipoma from other salivary gland neoplasms such as simple lipoma, pleomorphic adenoma, or oncocytoma.
    Clinical and Experimental Otorhinolaryngology 06/2014; 7(2):149-52. · 0.88 Impact Factor
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    ABSTRACT: Background Immunoglobulin A nephropathy (IgAN) and thin glomerular basement membrane nephropathy (TBMN) are the most common causes of persistent hematuria during childhood. The objective of this study is to determine the difference in clinical features and laboratory findings between pediatric patients with IgA deposited TBMN and IgAN alone. Methods Between January 2000 and March 2009, 95 children were diagnosed with IgAN by renal biopsy. Clinical features and laboratory findings of patients with isolated IgAN and with IgAN plus TBMN were compared; the children diagnosed with IgAN were compared to 127 children who had been diagnosed with TBMN alone during the same period. Results There were 71 (74.7%) of a total 95 patients that were diagnosed with isolated IgAN (Group1); in 24 (25.3%) of the 95 patients IgAN was combined with TBMN (Group 2). There was marked difference in the gender distribution between Group 2 and isolated TBMN patients. The degree of proteinuria and pathologic severity was higher in Group 1 compared with Group 2. Gross hematuria was present in both groups. There were no distinguishing features in the other laboratory parameters. Conclusion Patients with both IgAN and TBMN seem to have similar clinical features to patients with isolated IgAN; however, the latter tend to have better pathologic and laboratory findings, compared to the patients with IgAN alone.
    Kidney Research and Clinical Practice. 01/2013; 32(3):111–114.
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    ABSTRACT: Acinetobacter baumannii is increasingly becoming a major nosocomial pathogen. This opportunistic pathogen secretes outer membrane vesicles (OMVs) that interact with host cells. The aim of this study was to investigate the ability of A. baumannii OMVs to elicit a pro-inflammatory response in vitro and the immunopathology in response to A. baumannii OMVs in vivo. OMVs derived from A. baumannii ATCC 19606(T) induced expression of pro-inflammatory cytokine genes, interleukin (IL)-1β and IL-6, and chemokine genes, IL-8, macrophage inflammatory protein-1α, and monocyte chemoattractant protein-1, in epithelial cells in a dose-dependent manner. Disintegration of OMV membrane with ethylenediaminetetraacetic acid resulted in low expression of pro-inflammatory cytokine genes, as compared with the response to intact OMVs. In addition, proteinase K-treated A. baumannii OMVs did not induce significant increase in expression of pro-inflammatory cytokine genes above the basal level, suggesting that the surface-exposed membrane proteins in intact OMVs are responsible for pro-inflammatory response. Early inflammatory processes, such as vacuolization and detachment of epithelial cells and neutrophilic infiltration, were clearly observed in lungs of mice injected with A. baumannii OMVs. Our data demonstrate that OMVs produced by A. baumannii elicit a potent innate immune response, which may contribute to immunopathology of the infected host.
    PLoS ONE 01/2013; 8(8):e71751. · 3.73 Impact Factor
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    ABSTRACT: Diagnosing arrhythmogenic right ventricular cardiomyopathy (ARVC) is often challenging because no single diagnostic tool is available to detect the disease. We evaluated whether analysis of plakoglobin, N-cadherin, and connexin-43 immunoreactivity can be used as a significant test in diagnosis of ARVC. We selected subjects with suspicion of ARVC (n=22) in patients who underwent endomyocardial biopsy (EMB) in Kyungpook National University Hospital (n=1326). The patients (n=22) were classified into definite ARVC patients (n=17) and borderline ARVC (n=5). We selected control subjects (n=20) who were autopsied and died of non-cardiac disease. Hematoxylin-eosin, Masson's trichrome, and immunohistochemical stains for plakoglobin, N-cadherin, and connexin-43 were used for all specimens. Reduced immunoreactivity of plakoglobin was observed in 13 (76%) of the 17 patients with a definite ARVC and in 4 (80%) of the 5 patients with a borderline ARVC. All subjects displayed no significant reduction of the immunoreactivity for connexin-43 as well as for N-cadherin. Our investigation revealed that the immunohistochemical analysis for plakoglobin had an accuracy of 81%, 76% sensitivity, and 84% specificity in diagnosis of ARVC. Results of our study showed that the immunohistochemical analysis of plakoglobin had a relatively high sensitivity and specificity in ARVC, but immunohistochemistry for plakoglobin alone could not be relied upon as a diagnostic test for ARVC. We confirmed that N-cadherin and connexin-43 had no diagnostic value in ARVC.
    International journal of clinical and experimental pathology 01/2013; 6(12):2928-35. · 2.24 Impact Factor
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    ABSTRACT: Multicentric Castleman's disease (CD) is a rare atypical lymphoproliferative disorder, which is characterized by various systemic manifestations. Some patients with multicentric CD may have concomitant lung parenchymal lesions, for which lymphoid interstitial pneumonia (LIP) is known to be the most common pathologic finding. Follicular bronchiolitis and LIP are considered to be on the same spectrum of the disease. We describe a case of multicentric CD with pulmonary involvement, which was pathologically proven as follicular bronchiolitis.
    Tuberculosis and Respiratory Diseases 01/2013; 74(1):23-7.
  • Sunzoo Kim, Tae In Park
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    ABSTRACT: Naringenin is present abundantly in citrus fruits and is one of the natural alternatives to synthetic estrogen, but the mechanism of how naringenin functions is not well known. Our study revealed that the relative estrogenic potency of the substances was E2 > genistein > naringenin. Naringenin (at 5 μM) was found to repress both luciferase activity and pS2 mRNA expression, which was induced by E2 (at 0.1 μM) or genistein (at 5 μM). Naringenin, as well as E2 and genistein, was found to modulate the transcription of pS2 and TGFβ3 in T47D-KBluc cells through an estrogen receptor-dependent mechanism. Results of our study indicated that naringenin was a weak estrogen agonist that exhibits anti-estrogenic effect in estrogen-rich states and estrogenic activity in estrogen-deficient states in T47D-KBluc breast cancer cells.
    International journal of clinical and experimental medicine 01/2013; 6(10):890-899.
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    ABSTRACT: Propylthiouracil (PTU) is commonly used to treat hyperthyroidism. However, it is also associated with a number of adverse events. In particular, pulmonary complications, although rare, can be serious. Therefore, early detection is paramount. We herein describe a first case of PTU-induced bronchiolitis obliterans organizing pneumonia (BOOP) pathologically confirmed on a surgical lung biopsy. The present case shows that early detection coupled with the immediate withdrawal of PTU can lead to a successful resolution of symptoms and radiographic abnormalities without the need for corticosteroids. Although rare, PTU-induced BOOP should be considered in the differential diagnosis of pulmonary opacity in patients receiving PTU therapy.
    Internal Medicine 01/2013; 52(23):2657-9. · 0.97 Impact Factor
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    ABSTRACT: A better understanding of the histopathology and molecular biology of lung cancer might improve our capability to predict the outcome for any individual patient. The purpose of this study was to evaluate several histopathologic and molecular markers in order to assess their prognostic value in stage I non-small cell lung cancer. One hundred ten patients at the Kyungpook National University Hospital were enrolled in the study. Histopathologic factors and molecular markers were selected. Univariate analysis showed that the T stage, differentiation, visceral pleural invasion, and survivin expression were significantly associated with recurrence. Multivariate analysis demonstrated that differentiation and survivin overexpression emerged as independent prognostic factors of recurrence. In resected stage I non-small cell lung cancer, poor differentiation and survivin overexpression have been identified as independent predictors of poor disease-free survival.
    The Korean journal of thoracic and cardiovascular surgery. 04/2012; 45(2):101-9.
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    ABSTRACT: As lymphocytes play an active role in tumor control and as targets for immunochemotherapy, the prognostic significance of the absolute lymphocyte count (ALC) and its changes after rituximab, cyclophosphamide, adriamycin, vincristine and prednisone (R-CHOP) were investigated in patients with early-stage diffuse large B-cell lymphoma (DLBCL). The ALC was measured just before and on day + 21 after R-CHOP in 230 consecutive patients with stage I and II DLBCL. During the median follow-up of 31.8 (range, 1.8-70.0) months, 200 patients (89.7%) achieved a complete response (CR) and 20 achieved a partial response (PR) (9.0%), representing an overall response rate of 98.7% among 223 evaluable patients. Analyzed according to various ALCs, only an ALC ≥ 1.3 × 10(9)/L at day + 21 predicted longer progression-free (PFS) and overall survival (OS) in a univariate analysis (p < 0.001 and p = 0.001, respectively) as well as a higher CR rate adjusted to the revised International Prognostic Index (R-IPI) (odds ratio = 2.824; p = 0.031). Moreover, a multivariate analysis revealed that a high ALC at day + 21 predicted a better time to progression (TTP) (HR = 0.335; p = 0.006), PFS (HR = 0.332; p < 0.001) and OS (HR = 0.309; p = 0.002), independent of the R-IPI. In conclusion, the ALC after R-CHOP can be regarded as a prognostic marker in patients with early-stage DLBCL.
    Leukemia & lymphoma 02/2012; 53(9):1757-63. · 2.61 Impact Factor
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    ABSTRACT: A fusion gene between echinoderm microtubule-associated protein-like 4 (EML4) and the anaplastic lymphoma kinase (ALK) has been identified in non-small cell lung cancers (NSCLCs). Although a few studies have evaluated EML4-ALK fusion genes in Korean NSCLCs, the prevalence of different EML4-ALK fusion variants has yet to be clearly assessed. Herein, we have examined the profiles of EML4-ALK fusion gene variants in Korean patients of NSCLCs. EML4-ALK fusion genes have been detected in 10 (6.0%) of 167 patients of NSCLCs and in 9 (7.4%) of 121 patients of adenocarcinoma. Of the 10 patients with fusion genes identified, 8 (80%) were E13;A20 (variant 1) and 2 (20%) were E6;A20, with an additional 33-bp sequence derived from intron 6 of EML4 (variant 3b). These results indicate that the profiles of EML4-ALK fusion gene variants in Korean patients of NSCLC may differ from those in other ethnic populations. Herein, we describe for the first time the profiles of EML4-ALK fusion variants of Korean patients with NSCLCs.
    Journal of Korean medical science 02/2012; 27(2):228-30. · 0.84 Impact Factor
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    ABSTRACT: Cryptogenic organizing pneumonia (COP) generally responds well to corticosteroids with a favorable outcome. However, it can rapidly worsen and lead to respiratory failure that is refractory to corticosteroids. Adjunctive drugs have been used in refractory cases with various outcomes, but treatment experience is still lacking. We present a case of rapidly progressive COP accompanying air leak syndrome, which showed no prompt response to corticosteroids alone but gradual improvement with the addition of cyclosporine and macrolide. This case report supports the existing literature suggesting that an early therapeutic trial of this drug combination might be considered in COP patients whose condition worsens despite corticosteroid administration.
    Internal Medicine 01/2011; 50(5):475-9. · 0.97 Impact Factor
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    ABSTRACT: This study was conducted to identify genetic factors predisposing to TP53 mutations in patients with non-small cell lung cancer (NSCLC). A comprehensive panel of potentially functional single nucleotide polymorphisms (SNPs) in DNA repair genes was evaluated in relation to TP53 mutations. Thirty-seven SNPs in 28 DNA repair genes were genotyped by a sequenome mass spectrometry-based genotyping assay in 173 NSCLCs and the associations with TP53 mutations in the entire coding exons (exons 2-11), including splicing sites of the gene, were analyzed. Four SNPs (XPA rs1800975, OGG1 rs1052133, ADPRT rs1136410, and NBS1 rs1805794) were significantly associated with the prevalence of TP53 mutations in multivariate analysis for each SNP. When the 4 SNPs were combined, the prevalence of TP53 mutations was increased as the number of bad genotypes increased (P(trend)=0.001). Patients with 3 and 4 bad genotypes had a significantly higher frequency of TP53 mutations than those with 0-1 bad genotypes (adjusted odds ratio=5.18, 95% confidence interval=1.51-17.81, P=0.01 and adjusted odds ratio=18.26, 95% confidence interval=2.87-116.09, P=0.002, respectively). These findings suggest that the 4 SNPs may modulate the occurrence of TP53 mutations and contribute to lung carcinogenesis. However, larger studies are required to confirm our findings in other ethnic populations.
    Lung cancer (Amsterdam, Netherlands) 12/2010; 73(1):25-31. · 3.14 Impact Factor
  • Tuberculosis and Respiratory Diseases 01/2009; 67(4).
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    ABSTRACT: Acinetobacter baumannii is a nosocomial pathogen of increasing importance, but the pathogenic mechanism of this microorganism has not been fully explored. This study investigated the potential of A. baumannii to invade epithelial cells and determined the role of A. baumannii outer membrane protein A (AbOmpA) in interactions with epithelial cells. A. baumannii invaded epithelial cells by a zipper-like mechanism, which is associated with microfilament- and microtubule-dependent uptake mechanisms. Internalized bacteria were located in the membrane-bound vacuoles. Pretreatment of recombinant AbOmpA significantly inhibited the adherence to and invasion of A. baumannii in epithelial cells. Cell invasion of isogenic AbOmpA- mutant significantly decreased as compared with wild-type bacteria. In a murine pneumonia model, wild-type bacteria exhibited a severe lung pathology and induced a high bacterial burden in blood, whereas AbOmpA- mutant was rarely detected in blood. A. baumannii adheres to and invades epithelial cells. AbOmpA plays a major role in the interactions with epithelial cells. These findings contribute to the understanding of A. baumannii pathogenesis in the early stage of bacterial infection.
    BMC Microbiology 01/2009; 8:216. · 3.10 Impact Factor
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    ABSTRACT: Nodular fasciitis (NF) is a benign, proliferative lesion of myofibroblasts. The most common site of the lesion is in the upper extremities or trunk. NF in the head and neck is next in frequency and is the most common site in infants and children. In adults, NF in the submandibular region is very rare. We report a case of a 53-year-old man with a submandibular mass, rapidly growing for 10 days. Cytologic findings revealed a few sheets or clusters of small, uniform spindle cells. The uniform spindle cells had centrally located round to ovoid nucleus, but there were no nuclear atypia and atypical mitosis. There were focally loose stroma but we could not find chondroid or myxoid components. A partial parotidectomy was performed. We describe a case of NF in the submandibular region, adjacent to the parotid gland and review the clinical, cytologic, histologic, and immunohistochemical features of NF.
    Diagnostic Cytopathology 12/2008; 36(11):805-8. · 1.49 Impact Factor
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    ABSTRACT: We performed this study to investigate the aberrant methylation profile of the cancer-related genes in Korean non-small cell lung cancer (NSCLC) that previously exhibited high frequencies of methylation in Western populations. The aberrant promoter methylation of eight genes (GSTP1, p16, FHIT, APC, RASSF1A, hMLH1, hMSH2, AGT) was determined by MSP in 99 surgically resected NSCLCs and their corresponding nonmalignant lung tissues. Methylation in the tumor samples was detected at 15% for GSTP1, 22% for p16, 34% for FHIT1, 48% for APC, 40% for RASSF1A, 18% for hMLH1, 8% for hMSH2 and 21% for AGT, whereas it occurred at lower frequencies in the corresponding nonmalignant lung tissues, particularly in the p16 (1%) and RASSF1A (1%) genes. These results suggest that the methylation profiles of NSCLCs in a Korean population are similar to those in Western populations.
    Lung Cancer 11/2007; 58(1):1-6. · 3.39 Impact Factor
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    ABSTRACT: Apoptosis pathways are known to be involved in the pathogenesis of peripheral T-cell lymphomas (PTCLs). As such, the current study attempted to investigate the overexpression of Bcl-2, Bax, or p53 with respect to the progression of PTCL. Paraffin-embedded specimens from 74 patients were analyzed immunohistochemically for Bcl-2, Bax, or p53 overexpression including PTCL-unspecified (n=45), extranodal natural killer cell/T-cell lymphoma (n=10), angioimmunoblastic T-cell lymphoma (n=7), anaplastic large cell lymphoma (n=7), and cutaneous T-cell lymphoma (n=5). The Bcl-2 overexpression was exhibited in 33 (45%), Bax, 17 (23%), and p53, 33 patients (45%). Bcl-2 overexpression was strongly associated with advanced stage (p=0.021) and higher international prognostic indices (IPI) (p=0.038). Bcl-2(+)/p53(+) group was found to be associated with advanced stage (p=0.008) and higher IPI (p=0.001), compared with the other groups. The independent expression of Bcl-2 or p53 was not correlated with survival. Meanwhile, when confined to Bcl-2 overexpressing groups, p53 overexpression was significantly associated with poor survival (p=0.05), as the 3-year OS rate was 82.5% for Bcl-2(+)/p53- cases, yet only 32.9% for Bcl-2(+)/p53(+) cases. Multivariate analyses for OS found the Bcl-2/p53 co-expression (p=0.004) as independent prognostic factor, together with advanced stage (p<0.001) and higher prognostic index for PTCL (p=0.008). Bcl-2 overexpression seemed to correlate with the progression of PTCL interacting with a p53-dependent pathway.
    Annals of Hematology 09/2006; 85(9):575-81. · 2.87 Impact Factor
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    ABSTRACT: The present study evaluated the expression and mutations of c-kit in peripheral T-cell lymphomas (PTCLs), except for extra-nodal NK/T cell lymphomas, as a potential target for treatment with imatinib mesylate. Fifty-two patients diagnosed with PTCLs (peripheral T-cell lymhoma, unspecified, 38 cases; angioimmunoblastic T-cell, 7 cases; anaplastic large cell, 7 cases) were enrolled. The immunohistochemistry was performed using standard procedures with anti-c-kit monoclonal IgG, while the c-kit mutations were analysed on paraffin-embedded specimens using PCR-single-stranded conformational polymorphism followed by direct DNA sequencing. The median age of the patients was 52 years (19 to approximately 75 years) with a male-to-female ratio of 69%:31%. Weak expression of c-kit was found in 16 (30.8%) patients, while only 3 (5.8%) patients exhibited mutations in exon 11 or exon 13. The c-kit mutations in exon 11 occurred at codon 558 (AAG --> TAG; Lys --> Stop) and at codon 571 (CTA --> ATA; Leu --> Ile), respectively, while the mutation in exon 13 occurred at codon 634 (CGG --> CGA; Arg --> Arg). The current study only found c-kit mutations in a few patients with PTCLs, except for extra-nodal NK/T cell lymphomas. Therefore, c-kit would not seem to be a good target for a new therapeutic approach to PTCLs.
    Leukemia and Lymphoma 02/2006; 47(2):267-70. · 2.61 Impact Factor
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    ABSTRACT: The methyl-CpG binding domain 1 (MBD1) protein plays an important role for transcriptional regulation of gene expression. Polymorphisms and haplotypes of the MBD1 gene may have an influence on MBD1 activity on gene expression profiles, thereby modulating an individual's susceptibility to lung cancer. To test this hypothesis, we investigated the association of MBD1 -634G>A, -501delT (-501 T/T, T/-, -/-), and Pro(401)Ala genotypes and their haplotypes with the risk of lung cancer in a Korean population. The MBD1 genotype was determined in 432 lung cancer patients and in 432 healthy control subjects who were frequency matched for age and gender. The -634GG genotype was associated with a significantly increased risk of overall lung cancer compared with the -634AA genotype [adjusted odds ratio (OR), 3.10; 95% confidence interval (95% CI), 1.24-7.75; P = 0.016]. When analyses were stratified according to the tumor histology, the -634GG genotype was associated with a significantly increased risk of adenocarcinoma compared with the -634AA genotype (adjusted OR, 4.72; 95% CI, 1.61-13.82; P = 0.005). For the MBD1 -501delT and Pro(401)Ala polymorphisms, the -501 T/T genotype was associated with a marginal significantly increased risk of adenocarcinoma compared with the -501(-/-) genotype (adjusted OR, 2.07; 95% CI, 1.02-4.20; P = 0.045), and the Pro/Pro genotype was associated with a significantly increased risk of adenocarcinoma compared with the Ala/Ala genotype (adjusted OR, 3.41; 95% CI, 1.21-9.60; P = 0.02). Consistent with the genotyping analyses, the -634G/-501T/(401)Pro haplotype was associated with a significantly increased risk of overall lung cancer and adenocarcinoma compared with the -634A/-501(-)/(401)Ala haplotype (adjusted OR, 1.44; 95% CI, 1.08-1.91; P = 0.012 and P(c) = 0.048; adjusted OR, 1.75; 95% CI, 1.20-2.56; P = 0.004 and P(c) = 0.016, respectively). On a promoter assay, the -634A allele had significantly higher promoter activity compared with the -634G allele in the Chinese hamster ovary cells and A549 cells (P < 0.05 and P < 0.001, respectively), but the -501delT polymorphism did not have an effect on the promoter activity. When comparing the promoter activity of the MBD1 haplotypes, the -634A/-501(-) haplotype had a significantly higher promoter activity than the -634G/-501T haplotype (P < 0.001). These results suggest that the MBD1 -634G>A, -501delT, and Pro(401)Ala polymorphisms and their haplotypes contribute to the genetic susceptibility for lung cancer and particularly for adenocarcinoma.
    Cancer Epidemiology Biomarkers &amp Prevention 11/2005; 14(11 Pt 1):2474-80. · 4.56 Impact Factor

Publication Stats

252 Citations
50.02 Total Impact Points

Institutions

  • 2003–2014
    • Kyungpook National University Hospital
      • • Department of Pathology
      • • Department of Hemato-Oncology
      • • Department of Thoracic and Cardiovascular Surgery
      Sŏul, Seoul, South Korea
  • 2005–2010
    • Kyungpook National University
      • • Department of Pathology
      • • Department of Anatomy
      • • Department of Internal Medicine
      Daikyū, Daegu, South Korea