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1.
Omega (Westport) ; 82(2): 214-229, 2020 Dec.
Article in English | MEDLINE | ID: mdl-30360680

ABSTRACT

South Korea has one of the highest suicide rates in the world, and the most alarming suicide rate is among its elders. This study aims to understand the social, historical, and cultural context of the Korean older adults and examine suicide trends based on that understanding. The results show that the suicide risk increases with age, the male suicide rate outweighs that of females, and the suicide rate decreases with educational attainment. In addition, several suggestions for reducing elderly suicide rate are addressed, including differentiating the existing social services for elders by age and expanding suicide prevention programs beyond schools to communities so that all people in need can access them.


Subject(s)
Educational Status , Suicide Prevention , Suicide/statistics & numerical data , Age Distribution , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Republic of Korea , Sex Distribution , Socioeconomic Factors , Suicide/psychology
2.
Diabetes Metab ; 45(5): 453-457, 2019 10.
Article in English | MEDLINE | ID: mdl-30639566

ABSTRACT

AIM: This study investigated the clinical characteristics of diabetic ketoacidosis (DKA) and compared the DKA characteristics between patients treated with and without SGLT2 inhibitors. METHODS: Data were collected from patients aged ≥ 18 years admitted for DKA at nine centres in Korea between September 2014 and April 2017. The electronic medical records of these subjects were retrospectively reviewed. Based on their history of medications taken before admission, subjects were classified as either users or non-users of SGLT2 inhibitors and their clinical characteristics of DKA were compared. RESULTS: During the study, the main subtype of DKA episodes (n = 523) was identified as type 2 diabetes (51%). Average hospitalization duration was 11 days, and average intensive care unit (ICU) time was 2.5 days. The in-hospital mortality rate was 3%, but no users of SGLT2 inhibitors died during DKA treatment. In patients taking SGLT2 inhibitors (n = 15), DKA manifested at 124 days, on average, after starting the inhibitors (range: 7-380 days). Also, SGLT2 inhibitors users had significantly lower plasma glucose levels (413 mg/dL) compared with non-users (554 mg/dL), and longer ICU stays (4 vs. 2 days; P = 0.019). CONCLUSION: In this report of recent data on the clinical features of DKA in Korea, patients using SGLT2 inhibitors needed longer treatment in ICUs compared with non-users and had lower levels of blood glucose, whereas DKA associated with SGLT2 inhibitors was rare.


Subject(s)
Blood Glucose , Diabetes Mellitus/drug therapy , Diabetic Ketoacidosis/diagnosis , Sodium-Glucose Transporter 2 Inhibitors/therapeutic use , Adult , Diabetes Mellitus/blood , Diabetes Mellitus/mortality , Diabetic Ketoacidosis/blood , Diabetic Ketoacidosis/mortality , Female , Hospital Mortality , Humans , Hypoglycemic Agents/therapeutic use , Male , Middle Aged , Retrospective Studies , Treatment Outcome
3.
Bone Joint J ; 99-B(12): 1637-1642, 2017 Dec.
Article in English | MEDLINE | ID: mdl-29212687

ABSTRACT

AIMS: The aim of this study was to compare the efficacy of a corticosteroid injection for the treatment of carpal tunnel syndrome (CTS) in patients with and without Raynaud's phenomenon. PATIENTS AND METHODS: In a prospective study, 139 patients with CTS were treated with a corticosteroid injection (10 mg triamcinolone acetonide); 34 had Raynaud's phenomenon and 105 did not (control group). Grip strength, perception of touch with a Semmes-Weinstein monofilament and the Boston Carpal Tunnel Questionnaires (BCTQ) were assessed at baseline and at six, 12 and 24 weeks after the injection. The Cold Intolerance Severity Score (CISS) questionnaire was also assessed at baseline and 24 weeks after the injection. RESULTS: The two groups had similar baseline BCTQ scores, but the scores in the Raynaud's phenomenon group were significantly higher than those in the control group at 12 and 24 weeks after the injection. Throughout the 24-week follow-up, there were no significant differences in the mean grip strength between the groups, whereas the mean Semmes-Weinstein monofilament sensory index for the control group was significantly higher than that of the Raynaud's phenomenon group. The mean CISSs were not significantly different between the groups at baseline and at 24 weeks. After 24 weeks, 11 patients (32%) in the Raynaud's phenomenon group and 16 (15%) in the control group required carpal tunnel decompression (p = 0.028). Multivariable analysis indicated that concurrent Raynaud's phenomenon (odds ratio (OR) 2.6) and severe electrophysiological grade (OR 2.1) were independently associated with a failure of treatment after a corticosteroid injection. CONCLUSION: Although considerable improvements in symptoms will probably occur in patients with Raynaud's phenomenon who have CTS, they have higher risk of poor functional outcomes and failure of treatment than those without Raynaud's phenomenon. Cite this article: Bone Joint J 2017;99-B:1637-42.


Subject(s)
Carpal Tunnel Syndrome/drug therapy , Glucocorticoids/administration & dosage , Raynaud Disease/etiology , Triamcinolone Acetonide/administration & dosage , Adult , Carpal Tunnel Syndrome/complications , Female , Humans , Injections , Male , Middle Aged , Prospective Studies , Treatment Outcome
4.
J Hand Surg Eur Vol ; 42(5): 481-486, 2017 Jun.
Article in English | MEDLINE | ID: mdl-28490264

ABSTRACT

Metabolic syndrome is a constellation of medical conditions that arise from insulin resistance and abnormal adipose deposition and function. In patients with metabolic syndrome and De Quervain tenosynovitis this might affect the outcome of treatment by local corticosteroid injection. A total of 64 consecutive patients with De Quervain tenosynovitis and metabolic syndrome treated with corticosteroid injection were age- and sex-matched with 64 control patients without metabolic syndrome. The response to treatment, including visual analogue scale score for pain, objective findings consistent with De Quervain tenosynovitis (tenderness at first dorsal compartment, Finkelstein test result), and Disability of the Arm, Shoulder, and Hand score were assessed at 6, 12, and 24 weeks follow-up. Treatment failure was defined as persistence of symptoms or surgical intervention. Prior to treatment, patients with metabolic syndrome had mean initial pain visual analogue scale and Disability of the Arm, Shoulder, and Hand scores similar to those in the control group. The proportion of treatment failure in the metabolic syndrome group (43%) was significantly higher than that in the control group (20%) at 6 months follow-up. The pain visual analogue scale scores in the metabolic syndrome group were higher than the scores in the control group at the 12- and 24-week follow-ups. The Disability of the Arm, Shoulder, and Hand scores of the metabolic syndrome group were higher (more severe symptoms) than those of the control group at the 12- and 24-week follow-ups. Although considerable improvements in symptom severity and hand function will likely occur in patients with metabolic syndrome, corticosteroid injection for De Quervain tenosynovitis is not as effective in these patients compared with age- and sex-matched controls in terms of functional outcomes and treatment failure. LEVEL OF EVIDENCE: III.


Subject(s)
De Quervain Disease/complications , De Quervain Disease/drug therapy , Glucocorticoids/therapeutic use , Metabolic Syndrome/complications , Triamcinolone Acetonide/therapeutic use , Adult , Cohort Studies , De Quervain Disease/physiopathology , Female , Humans , Injections, Intra-Articular , Male , Middle Aged , Recovery of Function , Treatment Outcome , Young Adult
5.
Acta Orthop Belg ; 82(2): 358-364, 2016 Aug.
Article in English | MEDLINE | ID: mdl-27682300

ABSTRACT

We compare clinical outcomes of two different supplementary tibial fixation in anterior cruciate ligament (ACL) reconstruction using free tendon Achilles allograft. Eighty subjects underwent ACL reconstruction using Endobutton CL for femoral fixation and Bio-interference screw for tibial fixation. Supplementary tibial fixation was performed as direct -cortical fixation using spiked washer screw (group I) or as post-tie using washer screw (group II). -Lachman test, pivot shift test, IKDC classification, Lysholm score, and side-to-side difference (SSD) were evaluated. Thirty six in group I and thirty five in group II could follow up for at least 2 years. At the last follow-up, 7 in group I and 1 in group II showed 2+ or 3+ in Lachman test (p = 0.027). Mean SSD was 2.4mm in group I and 1.4mm in group II (p = 0.048). Post-tie using washer screw was more effective than direct cortical fixation using spiked washer screw to restore stability. Level of evidence : Therapeutic Level I ; Randomized controlled clinical trial.


Subject(s)
Anterior Cruciate Ligament Injuries/surgery , Anterior Cruciate Ligament Reconstruction/instrumentation , Anterior Cruciate Ligament Reconstruction/methods , Bone Screws , Tibia/surgery , Achilles Tendon/transplantation , Adult , Female , Humans , Male , Prospective Studies , Transplantation, Homologous , Treatment Outcome
6.
J Hand Surg Eur Vol ; 41(9): 963-969, 2016 Nov.
Article in English | MEDLINE | ID: mdl-27313183

ABSTRACT

Diffuse peripheral nerve impairment is common in metabolic syndrome: in patients with metabolic syndrome and carpal tunnel syndrome this might affect the outcome of treatment by local corticosteroid injection. A total of 55 consecutive patients with carpal tunnel syndrome and metabolic syndrome treated with corticosteroid injection (10 mg triamcinolone acetonide) were age and sex matched with 55 control patients without metabolic syndrome. Grip strength, perception of touch with Semmes-Weinstein monofilaments and Boston Carpal Tunnel Questionnaires were assessed at the baseline and at 6, 12 and 24 weeks follow-up. The two groups had similar pre-operative grip strength and Boston Carpal Tunnel Questionnaire scores. The Boston Carpal Tunnel Questionnaire symptom and function scores of the metabolic syndrome group were significantly greater than the control group at 12 and 24 weeks follow-up. Except for significantly greater grip strength at the 12-week follow-up in the control group, there were no significant differences in grip strength between the groups. Semmes-Weinstein monofilament sensory index for the control group was significantly greater than that of the metabolic syndrome group throughout the 24-week follow-up. After 24 weeks, five patients (13%) in the control group and 13 patients (27%) in the metabolic syndrome group had had carpal tunnel surgery. Patients with metabolic syndrome are at risk for poor functional outcome and failure of treatment after corticosteroid injection for carpal tunnel syndrome. LEVEL OF EVIDENCE: Treatment benefits III.


Subject(s)
Carpal Tunnel Syndrome/complications , Carpal Tunnel Syndrome/drug therapy , Glucocorticoids/therapeutic use , Metabolic Syndrome/complications , Triamcinolone Acetonide/therapeutic use , Adult , Case-Control Studies , Female , Hand Strength , Humans , Injections, Intra-Articular , Male , Middle Aged , Surveys and Questionnaires , Treatment Outcome
7.
ACS Appl Mater Interfaces ; 7(7): 4179-84, 2015 Feb 25.
Article in English | MEDLINE | ID: mdl-25629708

ABSTRACT

In order to enhance the etch rate of electron-beam-induced etching, we introduce a laser-assisted focused electron-beam-induced etching (LA-FEBIE) process which is a versatile, direct write nanofabrication method that allows nanoscale patterning and editing. The results demonstrate that the titanium electron stimulated etch rate via the XeF2 precursor can be enhanced up to a factor of 6 times with an intermittent pulsed laser assist. The evolution of the etching process is correlated to in situ stage current measurements and scanning electron micrographs as a function of time. The increased etch rate is attributed to photothermally enhanced Ti-F reaction and TiF4 desorption and in some regimes enhanced XeF2 surface diffusion to the reaction zone.

8.
Eur J Surg Oncol ; 41(3): 339-45, 2015 Mar.
Article in English | MEDLINE | ID: mdl-25454830

ABSTRACT

PURPOSE: Given the recent increase in the incidence of early gastric cancer, there is greater interest in identifying a minimally invasive therapy. The purpose of this study was to analyze the patterns of lymph node metastasis in patients with gastric cancer and to elucidate the clinical significance of skip metastasis. METHODS: We retrospectively analyzed patterns of lymph node metastasis (LNM) and clinicopathologic factors related to skip metastasis. RESULTS: Among 2963 patients with gastric cancer, 997 patients (33.6%) were detected as having LNM, and 27 patients (2.7%) with skip metastasis were detected among 997 patients with LNM. Skip metastasis were detected more frequently in the elderly. Compared with the N1 group, the skip metastasis group showed lower frequency of vascular invasion, and compared with the stepwise N2 group, the skip metastasis group showed smaller tumor size and a significantly higher incidence of negative lymphatic, vascular, and perineural invasion. CONCLUSIONS: Currently there is no way to predict N2 station LNM including skip metastasis, D2 LN dissection for gastric cancer is thought to be the appropriate treatment, even during early stage disease. Minimally invasive therapy should be performed cautiously in consideration of possible skip metastasis.


Subject(s)
Carcinoma/pathology , Lymph Nodes/pathology , Stomach Neoplasms/pathology , Adult , Age Factors , Aged , Carcinoma/secondary , Female , Humans , Lymph Node Excision , Lymphatic Metastasis , Male , Middle Aged , Neoplasm Staging , Retrospective Studies , Tumor Burden
9.
Intern Med J ; 45(4): 428-35, 2015 Apr.
Article in English | MEDLINE | ID: mdl-25533739

ABSTRACT

BACKGROUND: Albuminuria is associated with increased risk of multiple adverse health outcomes, such as progressive renal failure, cardiovascular disease and death. However, in the general population, it is uncertain whether albuminuria is associated with elevated heart rate, which is an independent and powerful risk factor for cardiovascular disease. AIM: To investigate whether an elevated heart rate is an independent factor associated with albuminuria in the general adult population of Korea. METHODS: A cross-sectional analysis was carried out on 5198 Korean adults aged 19 years or older who participated in the fifth (2011) Korea National Health and Nutrition Examination Survey (KNHANES V-2). RESULTS: The prevalence of albuminuria showed an increasing trend throughout the whole range of heart rate, even after adjusting for confounders (P = 0.002). The increment was most profound at the heart rate of 70-75 and >76 beats per minute (b.p.m.; P = 0.011). In multiple logistic regression analysis, age (P < 0.001), hypertension (P < 0.001), diabetes (P < 0.001), hypertriglyceridaemia (P = 0.025), estimated glomerular filtration rate (P = 0.028) and heart rate (P = 0.023) were independently associated with the presence of albuminuria in Korean adults. Compared with participants with heart rate ≤ 64 b.p.m., the odds ratio (95% CI) for albuminuria was 1.50 (1.15-1.96) for those with heart rate ≥ 76 b.p.m. CONCLUSIONS: The prevalence of albuminuria is independently associated with heart rate in the general adult population of Korea.


Subject(s)
Albuminuria/diagnosis , Albuminuria/epidemiology , Heart Rate , Nutrition Surveys , Population Surveillance , Adult , Aged , Cross-Sectional Studies , Female , Heart Rate/physiology , Humans , Male , Middle Aged , Nutrition Surveys/trends , Republic of Korea/epidemiology , Young Adult
10.
Oncogene ; 33(20): 2557-67, 2014 May 15.
Article in English | MEDLINE | ID: mdl-23728341

ABSTRACT

Mammalian sirtuin 1 (SIRT1) has connected to an ever widening circle of activities that encompass cellular stress resistance, energy metabolism and tumorigenesis. However, underlying mechanisms leading to oncogenic SIRT1 overexpression are less understood. In this study, we identified SIRT1 regulatory microRNA (miRNA) and its function in hepatocellular carcinoma (HCC). Aberrant SIRT1 overexpression was demonstrated in a subset of human HCCs. SIRT1 knockdown suppressed HCC cell growth by transcriptional deregulation of cell cycle proteins. This led to hypophosphorylation of pRb, which inactivated E2F/DP1 target gene transcription, and thereby caused significant increase of HCC cells to remain in the G1/S phase. A comprehensive miRNA profiling analysis indentified five putative endogenous miRNAs that are significantly downregulated in HCC. Ectopic expression of miRNA mimics evidenced miR-29c to suppress SIRT1 in HCC cells. Notably, ectopic miR-29c expression repressed cancer cell growth and proliferation, and it recapitulated SIRT1 knockdown effects in HCC cells. In addition, miR-29c expression was downregulated in a large cohort of HCC patients, and low expression of miR-29c was significantly associated with poor prognosis of HCC patients. Taken together, we demonstrated that miR-29c suppresses oncogenic SIRT1 by way of binding to 3'-untranslated region of SIRT1 mRNA causing translational inhibition in liver cancer cells. The loss or suppression of miR-29c may cause aberrant SIRT1 overexpression and promotes liver tumorigenesis. Overall, we suggest that miR-29c functions as a tumor suppressor by regulating abnormal SIRT1 activity in liver.


Subject(s)
Carcinoma, Hepatocellular/physiopathology , Genes, Tumor Suppressor , Liver Neoplasms/physiopathology , MicroRNAs/physiology , Oncogenes , Sirtuin 1/physiology , Carcinoma, Hepatocellular/genetics , Carcinoma, Hepatocellular/pathology , Cell Division , Cell Line, Tumor , Humans , Liver Neoplasms/genetics , Liver Neoplasms/pathology , Reverse Transcriptase Polymerase Chain Reaction , Sirtuin 1/metabolism
11.
Br J Surg ; 99(12): 1688-92, 2012 Dec.
Article in English | MEDLINE | ID: mdl-23023388

ABSTRACT

BACKGROUND: Endoscopic submucosal dissection is gaining popularity in the treatment of early gastric cancer. This study aimed to identify clinicopathological factors predictive of lymph node metastasis in patients with the poorly differentiated early gastric cancer to assess the feasibility of using endoscopic submucosal dissection for these cancers. METHODS: The records of patients with poorly differentiated early gastric cancer who had undergone gastric cancer surgery between January 2002 and December 2009 were reviewed. Associations between clinicopathological factors and the presence of lymph node metastasis were analysed by univariable and multivariable logistic regression analysis. RESULTS: Some 1005 patients were included in the analysis. Univariable analysis indicated that lymph node metastasis was associated with sex, ulceration, tumour size, depth of invasion, macroscopic type, lymphatic invasion and venous invasion. Logistic regression revealed that lymph node metastasis was significantly associated with sex, tumour size, depth of tumour invasion and lymphatic involvement. In the group with none of these risk factors (men with mucosal tumour no larger than 2 cm in size, with no lymphatic involvement), lymph node metastasis was present in four (3·2 per cent) of 124 patients. CONCLUSION: In the present study 3·2 per cent of patients who were negative for all identified risk factors had lymph node metastasis. The use of endoscopic submucosal dissection should be considered carefully in the treatment of poorly differentiated early gastric cancer.


Subject(s)
Adenocarcinoma/surgery , Gastrectomy/methods , Gastroscopy/methods , Stomach Neoplasms/surgery , Adenocarcinoma/pathology , Adenocarcinoma/secondary , Adult , Aged , Feasibility Studies , Female , Humans , Lymph Node Excision/methods , Lymphatic Metastasis , Male , Middle Aged , Neoplasm Invasiveness , Regression Analysis , Risk Factors , Stomach Neoplasms/pathology
12.
Nanotechnology ; 23(14): 145301, 2012 Apr 13.
Article in English | MEDLINE | ID: mdl-22433664

ABSTRACT

High resolution and isolated scanning probe microscopy (SPM) is in demand for continued development of energy storage and conversion systems involving chemical reactions at the nanoscale as well as an improved understanding of biological systems. Carbon nanotubes (CNTs) have large aspect ratios and, if leveraged properly, can be used to develop high resolution SPM probes. Isolation of SPM probes can be achieved by depositing a dielectric film and selectively etching at the apex of the probe. In this paper the fabrication of a high resolution and isolated SPM tip is demonstrated using electron beam induced etching of a dielectric film deposited onto an SPM tip with an attached CNT at the apex.


Subject(s)
Microscopy, Scanning Probe , Molecular Probes/chemistry , Nanotubes, Carbon/chemistry , Nanotubes, Carbon/ultrastructure , Electroplating , Gold/chemistry , Microscopy, Electron, Scanning , Molecular Probes/chemical synthesis , Nanotechnology/methods , Solutions
13.
Br J Surg ; 98(1): 73-8, 2011 Jan.
Article in English | MEDLINE | ID: mdl-21136563

ABSTRACT

BACKGROUND: Endoscopic resection of early gastric cancer is a relatively new and attractive treatment, but occasionally fails to remove all cancer lesions completely. This study aimed to elucidate clinicopathological factors that could be helpful in predicting residual tumour in the surgical specimen after incomplete endoscopic submucosal dissection (ESD). METHODS: Patients who underwent gastrectomy because of incomplete ESD between August 2004 and August 2008 were analysed. Clinicopathological characteristics were reviewed retrospectively from prospectively collected medical records. Patients were classified into groups with and without residual tumour. Pathology results following gastrectomy were compared with those of incomplete ESD. RESULTS: A total of 118 patients were included. The incidence of residual tumour in the surgical specimen was 24·6 per cent after incomplete ESD. Elevated/flat-type cancers, large tumours (at least 2 cm) and those limited to the mucosa had significantly higher incomplete ESD rates. Cancer limited to the mucosa and the presence of tumour in the lateral margin were associated with residual tumour in the surgical specimen (both P = 0·001). CONCLUSION: Radical gastrectomy should be performed if pathological examination reveals a positive lateral resection margin after ESD.


Subject(s)
Endoscopy, Gastrointestinal/methods , Gastric Mucosa/surgery , Gastroscopy/methods , Stomach Neoplasms/surgery , Adult , Aged , Aged, 80 and over , Dissection/methods , Female , Humans , Male , Middle Aged , Neoplasm Invasiveness , Neoplasm, Residual , Prospective Studies , Stomach Neoplasms/pathology , Treatment Outcome
14.
Diabet Med ; 27(9): 1033-40, 2010 Sep.
Article in English | MEDLINE | ID: mdl-20722677

ABSTRACT

AIMS: This study compared the efficacy and safety of tramadol/acetaminophen (T/A) and gabapentin in the management of painful diabetic neuropathy. METHODS: An open, randomized, comparative study was conducted. Subjects with painful symmetric neuropathy in the lower limbs and mean pain-intensity score > or = 4 on a numeric rating scale were eligible. Subjects were randomized to receive either tramadol (37.5 mg)/acetaminophen (325 mg) or gabapentin (300 mg) for 6 weeks. After 2 weeks of the titration period (1200 mg/day for gabapentin and three tablets/day for T/A), the doses were maintained if the pain was relieved. The primary efficacy outcome was a reduction in pain intensity. Secondary measures evaluated a pain relief scale, a Brief Pain Inventory, a 36-item Short Form Health Survey, average pain intensity and sleep disturbance. RESULTS: One hundred and sixty-three subjects (T/A 79; gabapentin 84) were included. At the final visit, the mean doses were 1575 mg/day for gabapentin and 4.22 tablets/day for T/A. Both groups were similar in terms of baseline pain intensity (mean intensity: T/A 6.7 +/- 1.6; gabapentin 6.3 +/- 1.6, P = 0.168). At the final visit, the mean reductions in pain intensity were similar in both groups (T/A -3.1 +/- 2.0; gabapentin -2.7 +/- 2.1, P = 0.744). Both groups had similar improvements in every Short Form Health Survey category and Brief Pain Inventory subcategory, and in the mean pain relief scores. CONCLUSION: This study suggests that the T/A combination treatment is as effective as gabapentin in the treatment of painful diabetic neuropathy in patients with Type 2 diabetes.


Subject(s)
Acetaminophen/administration & dosage , Amines/administration & dosage , Analgesics, Opioid/administration & dosage , Cyclohexanecarboxylic Acids/administration & dosage , Diabetes Mellitus, Type 2/drug therapy , Diabetic Neuropathies/drug therapy , Tramadol/administration & dosage , gamma-Aminobutyric Acid/administration & dosage , Adult , Aged , Diabetes Mellitus, Type 2/complications , Diabetes Mellitus, Type 2/physiopathology , Diabetic Neuropathies/physiopathology , Double-Blind Method , Drug Therapy, Combination , Female , Gabapentin , Humans , Male , Middle Aged , Pain/drug therapy , Treatment Outcome
15.
Neoplasma ; 56(4): 331-4, 2009.
Article in English | MEDLINE | ID: mdl-19469653

ABSTRACT

EphA3 is a component of the Eph/ephrin tyrosine kinase system, which participates in vasculature development. This receptor/ligand system is associated with various signaling pathways related to cell growth and viability, cytoskeletal organization, cell migration, and anti-apoptosis. Accumulated evidence suggests that aberrant regulation of EphA3 and its genetic alterations are implicated in the development and progression of various cancers. However, despite a high incidence of EphA3 over-expression, no such investigation has been performed in hepatocellular carcinoma. Thus, we investigated genetic alterations of the EphA3 gene in 73 cases of hepatocellular carcinoma by single-strand conformational polymorphism and sequencing. One novel D219V missense mutation was found in the extracellular domain of EphA3, and two genetic alterations in the intracellular sterile-alpha-motif (SAM) domain of EphA3 appeared to be polymorphisms. Although the functional assessments of this mutant are incomplete, it is believed that this novel EphA3 mutation may contribute to the development of hepatocellular carcinoma.


Subject(s)
Carcinoma, Hepatocellular/genetics , Liver Neoplasms/genetics , Mutation, Missense/genetics , Receptor Protein-Tyrosine Kinases/genetics , Adult , Aged , Aged, 80 and over , Carcinoma, Hepatocellular/pathology , Disease Progression , Female , Humans , Liver Neoplasms/pathology , Male , Middle Aged , Neoplasm Staging , Polymerase Chain Reaction , Polymorphism, Single-Stranded Conformational , Prognosis , Receptor, EphA3
16.
Eur Surg Res ; 42(4): 223-9, 2009.
Article in English | MEDLINE | ID: mdl-19279387

ABSTRACT

BACKGROUND/AIMS: p12(DOC-1) is a well-known growth suppressor; however, its role in gastric carcinogenesis is still unclear. We investigated the expression of p12(DOC-1) in gastric cancer tissues and its possible correlation with p53 expression, and determined its clinical significance. METHODS: Immunohistochemical staining using the tissue array method was performed on 180 human gastric carcinomas. The clinicopathological features and prognostic significance were analyzed. RESULTS: Of the 180 tissue samples, p53 expression was positive in 85 (47.2%) and p12(DOC-1) expression was negative in 140 (77.8%). The negative expression of p12(DOC-1) was significantly associated with a more advanced depth of tumor invasion and stage (p < 0.05). No apparent correlation was found between p12(DOC-1) and p53 expressions. The 5-year survival rate of the p12(DOC-1)-positive cases (53.7%) was higher than that of the p12(DOC-1)-negative cases (39.3%); however, neither p12(DOC-1) nor p53 expression status had any statistically significant prognostic value. Multivariate analysis revealed that lymph node metastasis, distant metastasis, lymphatic invasion and perineural invasion were independent prognostic factors. CONCLUSIONS: This is the first report that suggests that p12(DOC-1) may be involved in the development and progression of gastric cancer. Further studies are required to clarify its exact role in the mechanism of gastric carcinogenesis.


Subject(s)
Carcinoma/metabolism , Stomach Neoplasms/metabolism , Tumor Suppressor Protein p53/metabolism , Tumor Suppressor Proteins/metabolism , Adult , Aged , Aged, 80 and over , Carcinoma/pathology , Female , Humans , Male , Middle Aged , Neoplasm Invasiveness , Prognosis , Retrospective Studies , Stomach/pathology , Stomach Neoplasms/pathology , Young Adult
17.
Neoplasma ; 56(2): 136-40, 2009.
Article in English | MEDLINE | ID: mdl-19239328

ABSTRACT

UNLABELLED: The Janus kinase 1 (JAK1) gene encodes a cytoplasmic tyrosine kinase that is noncovalently associated with a variety of cytokine receptors and plays a nonredundant role in cell proliferation, survival, and differentiation. The mutated forms of JAK1 often altered the activation of JAK1 and then changed the activation of JAK1/STAT pathways, and this may contribute to cancer development and progression. Thus, to investigate whether genetic mutations of JAK1 gene are associated in hepatocellular carcinoma (HCC) progression, we analyzed genetic alterations of JAK1 gene in 84 human HCCs by single-strand conformational polymorphism (SSCP) and direct sequencing. Of 24 exons of JAK1 gene, 12 exons were previously reported to have mutations, we searched genetic alteration of JAK1 in these exons. Overall, one missense mutation (1.2%) was found. In addition, 12 cases (14%) were found to have single nucleotide polymorphism (14%) in exon 14. Taken together, we found one novel missense mutation of JAK1 gene in hepatocellular carcinomas with some polymorphisms. Although the functional assessment of this novel mutant remains to be completed, JAK1 mutation may contribute to the tumor development in liver cancer. KEYWORDS: JAK1 gene, hepatocellular carcinoma, mutation.


Subject(s)
Carcinoma, Hepatocellular/genetics , Janus Kinase 1/genetics , Liver Neoplasms/genetics , Mutation , Adult , Aged , Aged, 80 and over , Female , Humans , Janus Kinase 1/physiology , Male , Middle Aged , Polymorphism, Single Nucleotide , Signal Transduction
18.
Br J Cancer ; 98(4): 708-15, 2008 Feb 26.
Article in English | MEDLINE | ID: mdl-18283298

ABSTRACT

Little was known about work situation and work-related difficulties, including housework after stomach cancer diagnosis. We aimed to compare employment status and work-related difficulties between stomach cancer survivors and the general population. We enrolled 408 stomach cancer survivors from two hospitals 28 months after diagnosis and 994 representative volunteers from the general population from 15 geographic districts. Working was defined as being employed (including self-employed) and nonworking as being retired or a homemaker. Nonworking was significantly higher among stomach cancer survivors (46.6%) than in the general population (36.5%). Compared with the general population, the survivors had more fatigue in performing both housework (adjusted odds ratio (aOR)=2.08; 95% confidence interval (95% CI)=1.01-4.29) and gainful work (aOR=4.02; 2.55-6.33). More cancer survivors had reduced working hours (aOR=1.42; 95% CI=4.60-28.35) and reduced work-related ability (aOR=6.11; 95% CI=3.64-10.27) than did the general population. The association of nonworking with older age and being female was significantly more positive for survivors than for the general population. Among survivors, poorer Eastern Cooperation Oncology Group Performance Status and receiving total gastrectomy were positively associated with nonworking. Stomach cancer survivors experienced more difficulties in both housework and gainful employment than did the general population. Our findings on stomach cancer survivors' work-related difficulties and the predictors of nonworking will help physicians guide patients towards more realistic postsurgical employment plans.


Subject(s)
Employment , Stomach Neoplasms/psychology , Survivors , Adaptation, Psychological/physiology , Aged , Cross-Sectional Studies , Educational Status , Female , Health Status , Humans , Male , Middle Aged , Social Class , Socioeconomic Factors , Stomach Neoplasms/mortality , Surveys and Questionnaires , Survival Rate , Workplace
19.
Ann Surg Oncol ; 15(2): 508-13, 2008 Feb.
Article in English | MEDLINE | ID: mdl-18071825

ABSTRACT

BACKGROUND: The aim of this study was to compare the clinicopathological characteristics of an early signet ring cell carcinoma (SRC) with an early undifferentiated carcinoma (mucinous, poorly differentiated adenocarcinoma) and early differentiated carcinoma (well or moderately differentiated tubular adenocarcinoma, papillary adenocarcinoma) and find indications for endoscopic mucosal resection (EMR) in early SRC. METHODS: 1520 patients with early gastric cancer (EGC), who underwent a curative gastrectomy, were analyzed retrospectively. Among them, 388 patients with SRC were compared with 253 patients with undifferentiated carcinoma (UDC) and 879 with a differentiated carcinoma (DC). RESULTS: SRC was more common in young female patients than UDC. SRC had a tendency to be confined to the mucosa, with smaller size than UDC. The lymph node metastasis rate for SRC was lower than that for UDC, but similar to that of DC. Multivariate analysis revealed lymph node metastasis (LNM) to be associated with the depth of invasion, tumor size, histological type, and lymphatic involvement. SRC had no LNM in the case of a mucosal tumor, smaller than 2 cm, and in the absence of lymphatic involvement. The prognosis of SRC was more favorable than UDC. CONCLUSIONS: Early SRC has different characteristics from early UDC. In view of the lower rate of lymph node metastasis and better prognosis, we suggest that EMR can be performed on patients with early SRC limited to the mucosa, less than 2cm in size, and with no lymphatic involvement.


Subject(s)
Carcinoma, Signet Ring Cell/surgery , Endoscopy, Gastrointestinal , Stomach Neoplasms/surgery , Adenocarcinoma/pathology , Adenocarcinoma/surgery , Adenocarcinoma, Papillary/pathology , Adenocarcinoma, Papillary/surgery , Carcinoma, Signet Ring Cell/pathology , Female , Humans , Lymphatic Metastasis , Male , Middle Aged , Multivariate Analysis , Neoplasm Invasiveness , Prognosis , Retrospective Studies , Risk Factors , Stomach Neoplasms/pathology
20.
Transplant Proc ; 39(5): 1723-5, 2007 Jun.
Article in English | MEDLINE | ID: mdl-17580233

ABSTRACT

OBJECTIVE: Autologous islet transplantation has been reported to show favorable outcomes on glucose metabolism. The objective of this study was to describe successful delivery of twins in an islet recipient who had undergone distal pancreatectomy. PATIENT: A 35-year-old woman who underwent distal pancreatectomy owing to a solid pseudopapillary neoplasm received an autologous islet transplantation (140,000 islet equivalents). After 2.5 years, she unexpectedly became pregnant. Cesarean section was performed at 35 weeks delivering male twins without complications. Plasma glucose and insulin levels, insulinogenic index, and hemoglobin A1c were measured from the preoperative to the postpartum state as the main outcome. RESULTS: The patient showed impaired glucose tolerance before pancreatectomy, but improved to a normal glucose tolerance after transplantation, maintaining euglycemia until pregnancy. Because her fasting glucose levels were within the normal range during pregnancy, fasting insulin represented insulin resistance. Her fasting insulin levels abruptly increased in the third trimester of pregnancy, but returned after delivery. Insulinogenic index increased over 1 year after transplantation, but gradually decreased thereafter. During pregnancy, it increased again, but could not compensate for the insulin resistance. Therefore, gestational diabetes mellitus developed: glucose homeostasis recovered to normal after delivery. CONCLUSIONS: The current report suggested a successful pregnancy after autologous islet transplantation that did not itself permanently deteriorate graft function.


Subject(s)
Islets of Langerhans Transplantation/physiology , Pancreatectomy , Pancreatic Neoplasms/surgery , Adult , Female , Follow-Up Studies , Humans , Infant , Infant, Newborn , Pregnancy , Pregnancy Outcome , Transplantation, Autologous
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