21 results on '"Cho, Hyun"'
Search Results
2. A New Potato Cultivar "Hongyoung", with Red Skin and Flesh Color, and High Concentrations of Anthocyanins.
- Author
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Park, Young Eun, Cho, Ji Hong, Cho, Hyun Mook, Yi, Jung Yun, Seo, HyoWon, and Choung, Myoung Gun
- Subjects
- *
PLANT breeding , *POTATOES , *CROP yields , *POTATO scab , *ANTHOCYANINS , *PHYTOPHTHORA infestans - Abstract
"Hongyoung" was bred within the potato breeding program of National Institute of Highland Agriculture (NIHA). It was originated from a cross made between Atlantic as a female and AG34314 as a male parent in 2003. "Hongyoung" was evaluated as a clone number Daegwan 1-102 for the growth and tuber characteristics, yielding ability, and resistance to major diseases in the regional yield trials from 2006 to 2007. Finally, this clone was renamed as "Hongyoung" and was presented to Korean Seed & Variety Service in 2007 for registration as a new potato cultivar. "Hongyoung" has a round shape, shallow eye depth, red skinned and fleshed tuber characteristics. Its mean tuber yields from the regional yield trials was 37.4 MT/ha, and it showed the highest yield in spring cropping. "Hongyoung" showed high resistance to common scab (Streptomyces scabies) and potato leaf roll virus (PLRV), however it was susceptible to both potato virus Y (PVY) and late blight (Phytophthora infestans). The dry matter content of "Hongyoung" was low to medium 17.7%, therefore it is suitable for table use. Its anthocyanin content was the highest in autumn cropping with 31.8 mg/100g fresh weight and it contained 3.6 times higher anthocyanin than the control, Jasim. [ABSTRACT FROM AUTHOR]
- Published
- 2009
3. [Gastrointestinal Emergencies in Neonates: What We Should Know].
- Author
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Cho HH, Lee SM, and You SK
- Abstract
Newborn gastrointestinal tract emergency diseases include various disorders that occur anywhere along the digestive tract. Most of them are congenital malformations, not acquired diseases. Many of them cannot be confirmed on prenatal examination, and consequently, postnatal evaluation is required. Unlike adults, in newborn babies, detailed evaluations with computed tomography (CT) and magnetic resonance imaging (MRI) are often limited, so making the diagnosis based on early abdominal radiography is most important. Therefore, it is necessary to be familiar with the radiologic findings that may be seen on imaging studies. In addition, it is important to understand abdominal ultrasound and fluoroscopy findings, which can be used in addition to simple radiography and indications that can be used for further diagnosis and appropriate treatment. Therefore, this study describes and organizes the various imaging findings that may occur in neonatal gastrointestinal emergencies., Competing Interests: Conflicts of Interest: The authors have no potential conflicts of interest to disclose., (Copyrights © 2020 The Korean Society of Radiology.)
- Published
- 2020
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4. [Hermeneutic Phenomenological Study on the Experiences of Employment of Married North Korean Women Defectors Rearing Children].
- Author
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Cho HM and Choi EJ
- Subjects
- Adult, Child, Democratic People's Republic of Korea, Female, Humans, Interviews as Topic, Marriage, Middle Aged, Republic of Korea, Women psychology, Child Rearing, Emigrants and Immigrants psychology, Employment
- Abstract
Purpose: This study aimed to understand the experiences of married North Korean women's child-rearing, working lives, and their home and work environment in depth., Methods: This study adopted van Manen's hermeneutic phenomenological method to qualitatively analyze data. The participants were 8 married North Korean women defectors. Data were collected through in-depth interviews and observations from July 4 to August 20, 2018., Results: Nine essential themes emerged: more personal challenges after overcoming a life-threatening crisis; hopes of firmly settling in this land; the wound from the north, which chased them here; a body that becomes stronger through hardship; being stuck in a past full of anxiety and pain; the present is full of hope; hope for the future; sense of alienation from coworkers that cannot be overcome; and sense of power to endure an exhausting work life., Conclusion: This study provided a broader understanding of the life and experiences of married women from North Korea. It highlights the need for nurses to recognize their importance in nursing care. The study also suggests that academic and practical approaches for nursing, and basic data for a nursing intervention for married women from North Korea be provided. The study findings can be used as a basis for preparing a national policy that will help North Korean defectors to find employment and gain stability., Competing Interests: The authors declared no conflict of interest., (© 2020 Korean Society of Nursing Science.)
- Published
- 2020
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5. [Influencing Factors on Lactulose Breath Test Results].
- Author
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Kim JW, Park SY, Chung JO, Cho HA, Kim DH, Yoon JH, Park CH, Kim HS, Choi SK, and Rew JS
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Body Mass Index, Female, Humans, Hydrogen metabolism, Irritable Bowel Syndrome pathology, Logistic Models, Male, Methane metabolism, Middle Aged, Odds Ratio, Sex Factors, Young Adult, Breath Tests methods, Irritable Bowel Syndrome diagnosis
- Abstract
Background/aims: This study aimed to identify the demographic and clinical factors associated with positive breath-test results and to assess the relationship between hydrogen and methane production in patients with suspected irritable bowel syndrome (IBS)., Methods: The demographic and clinical factors of 268 patients with suspected IBS, who had undergone a lactulose breath test, were analyzed., Results: Of 268 patients included in this study, 143 (53.4%) were females. The median age and BMI of the patients was 58.0 years (range, 18.0-80.0 years) and 22.5 kg/m
2 (range, 14.4-34.3 kg/m2 ), respectively. A weak positive correlation was observed between the BMI and baseline hydrogen level (rho=0.134, p=0.031). Women were significantly more likely to show a ≥20 ppm increase in hydrogen within 90 min (early hydrogen increase, p=0.049), a ≥10 ppm increase in methane within 90 min (early methane increase, p=0.001), and a ≥10 ppm increase in methane between 90 min and 180 min (late methane increase, p=0.002) compared to men. The baseline hydrogen level was related to the baseline methane level (rho=0.592, p<0.001) and the maximal hydrogen level within 90 min was related to maximal methane level within 90 min (rho=0.721, p<0.001). Patients with an early hydrogen increase (43.8%) were more likely to show a positive result for an early methane increase compared to patients without an early increase in hydrogen (0%, p<0.001)., Conclusions: Women were associated with high rates of positive lactulose breath-test results. In addition, methane production was correlated with hydrogen production.- Published
- 2020
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6. [Successful primary infliximab treatment of orofacial Crohn's disease without gastrointestinal manifestation].
- Author
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Jung BY, Lee SH, Chung SK, Lee CK, Lee TH, Chung IK, Kim SJ, and Cho HD
- Subjects
- Aged, Crohn Disease diagnosis, Female, Gastrointestinal Diseases pathology, Humans, Immunosuppressive Agents therapeutic use, Infliximab, Mercaptopurine analogs & derivatives, Mercaptopurine therapeutic use, Oral Ulcer diagnosis, Anti-Inflammatory Agents therapeutic use, Antibodies, Monoclonal therapeutic use, Crohn Disease drug therapy
- Abstract
Crohn's disease is a chronic inflammatory bowel disease that can involve the whole gastrointestinal tract. The orofacial manifestation of Crohn's disease, which is rare, can develop irrespective of intestinal involvement. These orofacial lesions are often misdiagnosed as simple oral ulcers. Corticosteroids are the mainstay of therapy for orofacial Crohn's disease. However, infliximab, the chimeric monoclonal antibody to tumor necrosis factor-a, is now considered as a primary treatment because of the disease's relatively high rate of steroid resistance. We present a case of deep oral ulcer and periorbital swelling in a 65-year-old woman. She was diagnosed with intestinal Crohn's disease 7 years ago, which was in remission after treatment with an immunosuppressive agent (azathioprine). The patient was given the diagnosed with orofacial Crohn's disease and successfully treated with infliximab.
- Published
- 2012
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7. [Usefulness of ¹⁸F-fluoro-2-deoxyglucose positron emission tomography in evaluation of gastric cancer stage].
- Author
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Yoon NR, Park JM, Jung HS, Cho YK, Lee IS, Choi MG, Chung IS, Song KY, and Park CH
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- Aged, Female, Humans, Lymphatic Metastasis, Male, Middle Aged, Neoplasm Staging, Positron-Emission Tomography, Predictive Value of Tests, ROC Curve, Retrospective Studies, Stomach Neoplasms diagnostic imaging, Tomography, X-Ray Computed, Fluorodeoxyglucose F18 chemistry, Radiopharmaceuticals chemistry, Stomach Neoplasms diagnosis
- Abstract
Background/aims: The usefulness of ¹⁸F-fluoro-2-deoxyglucose (FDG)-PET in detecting primary cancer, lymph node metastasis, and distant metastasis were studied in the gastric cancer patients., Methods: The subjects were 392 gastric cancer patients who received FDG-PET and an abdominal CT test prior to surgery. The results of FDG-PET and CT were compared with the surgical and pathologic results., Results: The primary site detection rate of FDG-PET was 74.4%, 50.3% in early gastric cancer and 92.0% in advanced gastric cancer. Detection rate was higher when tumors were larger than 3.5 cm, had deeper depth of invasion, and at a later stage (p<0.05, respectively). In multivariate analysis, tumor size, spread of tumor cells beyond the muscle layer (≥T2), and lymph node metastasis were statistically significant factors in primary site detection rate. The sensitivity, specificity, and positive predictive value of FDG-PET to lymph node metastasis were 59.6%, 88.8%, and 81.1% respectively, sensitivity being lower compared to CT while specificity and positive predictive value were higher. Sensitivity, specificity, and positive predictive value to distant metastasis were, respectively, 66.7%, 99.2%, and 88.0%, similar to CT. In 21 of the 392 patients (5.4%), synchronous double primary cancers were detected., Conclusions: In gastric cancer, usefullness of FDG-PET is limited to the advanced stage. Diagnostic value of this test was not superior to CT. However, FDG-PET may be useful in detecting synchronous double primary cancers.
- Published
- 2012
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8. [Change of Clostridium difficile colitis during recent 10 years in Korea].
- Author
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Lee YJ, Choi MG, Lim CH, Jung WR, Cho HS, Sung HY, Nam KW, Chang JH, Cho YK, Park JM, Kim SW, and Chung IS
- Subjects
- Aged, Anti-Bacterial Agents therapeutic use, Enterocolitis, Pseudomembranous diagnosis, Enterocolitis, Pseudomembranous drug therapy, Female, Humans, Male, Metronidazole therapeutic use, Middle Aged, Republic of Korea, Retrospective Studies, Vancomycin therapeutic use, Clostridioides difficile, Enterocolitis, Pseudomembranous epidemiology
- Abstract
Background/aims: Our clinical experience and recent published literatures suggest that Clostridium difficile colitis (CDC) has become more common and potentially more pathogenic in recent years. The aim of study was to evaluate changes in the epidemiological features of CDC in hospitalized patients in Korea., Methods: We retrospectively reviewed all patients of CDC diagnosed at Kangnam St. Mary Hospital from 1998 to 2007. CDC was defined as having a positive C. difficile cytotoxicity assay, or endoscopic or pathologic evidence of CDC., Results: A total of 189 cases (male 73, female 116, mean age 63.3 years) of CDC were diagnosed during the study period. The prevalence of CDC increased from 1.9/10,000 patient admissions in 1998-1999 to 8.82/10,000 patient admissions in 2006-2007. One hundred sixty three indication for cases (86.2%) of patients identified a prior use of antibiotics in the 2 months preceding diagnosis. The most common antibiotic use was prophylactic use during perioperational period (33.3%) followed by pneumonia (23.3%). The overall response rate to initial antibiotics was 82.7%. One hundred seventy two (91%) patients were initially treated with metronidazole. The response rate was 84.3%. All patients with initial failure to metronidazole were successfully treated by vancomycin. The response rate of vancomycin as first treatment was 80%. Three deaths were associated with CDC despite the use of combination of metronidazole and vancomycin., Conclusions: The prevalence of CDC in hospitalized patients in Korea significantly increased from 1998 to 2007.
- Published
- 2010
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9. [A case of spontaneous regression of hepatocellular carcinoma with multiple lung metastases].
- Author
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Hong JH, Seo DD, Jeon TJ, Oh TH, Shin WC, Choi WC, and Cho HS
- Subjects
- Aged, Carcinoma, Hepatocellular secondary, Carcinoma, Hepatocellular therapy, Chemoembolization, Therapeutic, Hepatitis B, Chronic complications, Hepatitis B, Chronic diagnosis, Humans, Liver Neoplasms complications, Liver Neoplasms therapy, Lung Neoplasms diagnostic imaging, Lung Neoplasms secondary, Male, Neoplasm Regression, Spontaneous, Neoplasm Staging, Tomography, X-Ray Computed, alpha-Fetoproteins analysis, Carcinoma, Hepatocellular pathology, Liver Neoplasms pathology, Lung Neoplasms diagnosis
- Abstract
Spontaneous regression of hepatocellular carcinoma (HCC) is extremely rare. We report a case of 67-year-old man having HBV-associated HCC with multiple lung metastases which regressed spontaneously. The patient had single liver mass and received surgical resection. The mass was confirmed as HCC histopathologically. Nine years after surgical resection, a 3.3 cm sized recurred HCC was detected on the resection margin in CT scan. Transarterial chemoembolization (TACE) was performed 3 times, and lung metastases developed thereafter. The patient received 2 more sessions of TACE, however, metastatic lung nodules were in progress very rapidly. We decided to stop TACE and followed the patient regularly without any anti-cancer treatment. Nine months after development of lung metastasis, the size and number of metastatic lung nodules decreased and were not detected anymore after 14 months. Serum alpha-fetoprotein levels also decreased to normal range and no viable tumor was noted in the liver. The patient is still alive 12 years after the first diagnosis of HCC and 16 months after lung metastasis developed.
- Published
- 2010
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10. [Surgical treatment of gastric carcinoma].
- Author
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Hur H and Park CH
- Subjects
- Gastrectomy, Gastroenterostomy, Humans, Laparoscopy, Lymph Node Excision, Neoplasm Staging, Carcinoma surgery, Stomach Neoplasms surgery
- Abstract
The gastric cancer is the most common cancer in Korea. The only treatment modality showing improved survival for gastric cancer is curative surgical resection, which comprises the resection of stomach, proper lymphadenectomy, and reconstruction. However, specific surgical procedures should be decided according to the location of the cancer, advancement of the tumor, and patients condition. Surgical treatment for gastric cancer has been developed toward two directions that are minimal invasive surgery for early gastric cancer and multi-disciplinary approach for advanced gastric cancer. Laparoscopic surgery for early gastric cancer has been accepted for minimally invasive surgery. Moreover, the advancement of diagnostic tools to assess biological aggressiveness of the tumor enables physicians to perform endoscopic resection or minimized resection for early gastric cancer. Recently, surgeons try to extend the application of laparoscopic gastric resection and D2 lymphadenectomy to advanced gastric cancer. However, technical and oncological evidences based on clinical trials should be filed up before adopting it as a standard therapy. In case of advanced gastric cancer, in addition to radical surgery, various treatment modalities including chemotherapy, radiation, and molecular target therapy also have been applied in many clinical trials. However, it should be stressed that a prerequisite for precise evaluation of the efficacy of these combined treatment modalities would be the standardization of surgical procedure.
- Published
- 2009
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11. [Clinical characteristics and changing epidemiology of Clostridium difficile-associated disease (CDAD)].
- Author
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Byun TJ, Han DS, Ahn SB, Cho HS, Kim TY, Eun CS, Jeon YC, Sohn JH, and Kang JO
- Subjects
- Adult, Aged, Aged, 80 and over, Aminoglycosides therapeutic use, Anti-Bacterial Agents therapeutic use, Bacterial Toxins analysis, Cephalosporins therapeutic use, Community-Acquired Infections epidemiology, Cross Infection epidemiology, Enterocolitis, Pseudomembranous drug therapy, Enterocolitis, Pseudomembranous epidemiology, Enterotoxins analysis, Female, Humans, Male, Metronidazole therapeutic use, Middle Aged, Quinolones therapeutic use, Retrospective Studies, Clostridioides difficile, Enterocolitis, Pseudomembranous diagnosis
- Abstract
Background/aims: The spectrum of Clostridium difficile-associated disease (CDAD) ranges from mild diarrhea to life-threatening colitis. Recent studies reported an increase in incidence and severity of CDAD and the presence of severe community-acquired CDAD (CA-CDAD). The aims of this study were to investigate the incidence of CA-CDAD and non-antibiotics-associated CDAD, and to compare the clinical characteristics between hospital-acquired (HA) and CA-CDAD., Methods: The medical records of 86 patients who were diagnosed as CDAD in Hanyang University Guri Hospital between January 2005 and October 2007 were retrospectively reviewed., Results: Of the 86 patients (mean age 64 years), 53 patients were women. The most frequently prescribed antibiotics were cephalosporins (67.4%), followed by aminoglycosides (38.4%) and quinolones (14%). Of the 86 patients, the average duration of treatment and recovery time of symptoms were 11.5 days and 4.6 days, respectively. Seven percent of patients experienced relapse treatment. The overall incidence rate of CA-CDAD and non-antibiotics-associated CDAD were 10.5% and 22.1%, respectively. CA-CDAD group had lower rate of antimicrobial exposure whilst showing higher rate of complications compared to HA-CDAD group. Three patients in the CA-CDAD progressed towards a severe complicated clinical course, including septic shock., Conclusions: The incidence rate of CA-CDAD and non-antibiotics-associated CDAD were 10.5% and 22.1%, respectively. CA-CDAD tends to have a higher complication rate compared to HA-CDAD. Community clinicians needs to maintain a high level of suspicion for CDAD, whilst coping with the ever evolving epidemiologic change.
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- 2009
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12. [A case of familial Crohn's disease observed in a parent and his offspring].
- Author
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Cho HS, Byun TJ, Ahn SB, Kim TY, Eun CS, Jeon YC, Kim YS, and Han DS
- Subjects
- Child, Colonoscopy, Crohn Disease diagnostic imaging, Crohn Disease etiology, Family, Genetic Predisposition to Disease, Humans, Male, Middle Aged, Pedigree, Radiography, Crohn Disease diagnosis
- Abstract
Crohn's disease (CD), one of the major forms of idiopathic inflammatory bowel disease (IBD), is thought to be related to genetic susceptibility coupled with environmental factors. A positive family history is the strongest risk factor for the development of CD. The 10-fold increase in the familial risk of CD strongly suggests that these disorders have a genetic background. The prevalence of IBD in Asian populations is lower than in Western populations, which may be due to genetic influences, environmental factors, or a combination of both. In a Korean study, only 0.25% of parents had IBD in CD probands and all of them had ulcerative colitis. The term of familial CD was used only for those with one or more first-degree relatives with confirmed CD. There are few case reports about familial Crohn's disease in Korea. We report a case of familial CD that the father, the first degree relative was diagnosed as small bowel CD after confirming his son as having CD.
- Published
- 2008
13. [Histological changes of gastric atrophy and intestinal metaplasia after Helicobacter pylori eradication].
- Author
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Lee Y, Jeon YC, Koo TY, Cho HS, Byun TJ, Kim TY, Lee HL, Eun CS, Lee OY, Han DS, Sohn JH, and Yoon BC
- Subjects
- Adult, Aged, Anti-Bacterial Agents therapeutic use, Anti-Ulcer Agents therapeutic use, Data Interpretation, Statistical, Female, Follow-Up Studies, Gastritis, Atrophic etiology, Gastritis, Atrophic microbiology, Helicobacter Infections drug therapy, Humans, Male, Metaplasia microbiology, Middle Aged, Time Factors, Gastritis, Atrophic pathology, Helicobacter Infections complications, Helicobacter pylori drug effects, Helicobacter pylori isolation & purification, Intestines pathology
- Abstract
Background/aims: Long-term Helicobater pylori infection results in atrophic gastritis and intestinal metaplasia, and increases the risk of gastric cancer. However, it is still controversial that eradication of H. pylori improves atrophy or metaplasia. Therefore, we investigated histological changes after the H. pylori eradication in patients with atrophy or metaplasia., Methods: One hundred seven patients who received successful eradication of H. pylori infection in Hanyang University, Guri Hospital from March 2001 to April 2006, were enrolled. Antral biopsy was taken before the eradication to confirm the H. pylori infection and grade of atrophy or metaplasia by updated Sydney System. After a certain period of time, antral biopsy was repeatedly taken to confirm the eradication and investigate histological changes of atrophy or metaplasia., Results: Mean age of the patients was 55.3+/-11.3, and average follow-up period was 28.7+/-13.9 months. Endoscopic diagnosis included gastric ulcer, duodenal ulcer, non-ulcer antral gastritis. Atrophy was observed in 41 of 91 and their average score was 0.73+/-0.92. After the eradication of H. pylori, atrophy was improved (0.38+/-0.70, p=0.025). However, metaplasia which was observed in 49 of 107, did not significantly improve during the follow-up period. Newly developed atrophy (7 of 38) or metaplasia (18 of 49) was observed in patients who without atrophy or metaplasia initially. Their average scores were slightly lower than those of cases with pre-existing atrophy or metaplasia without statistical significance., Conclusions: After the eradication of H. pylori infection, atrophic gastritis may be improved, but change of intestinal metaplasia is milder and may take longer duration for improvement.
- Published
- 2007
14. [Current application of minimally invasive surgery for gastrointestinal diseases].
- Author
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Park CH
- Subjects
- Humans, Minimally Invasive Surgical Procedures trends, Gastrointestinal Diseases surgery
- Abstract
The advent of minimally invasive surgery (MIS) brought a major deviation in trend from conventional surgery. Since the introduction of first laparoscopic cholecystectomy in 1985, many operations for gastrointestinal diseases adopted MIS technique in a relatively short period of time. These MIS operations yielded better outcomes when compared to their open counterparts: less pain, shorter hospital stay, faster recovery, and better cosmetics. More complex surgical procedures for benign and malignant diseases of gastrointestinal tract are currently being performed by MIS technique with the improvement in equipment, instrumentation, and surgical skills. At the forefront of MIS, lies robotics. This paper briefly reviews the current status of MIS in the field of gastrointestinal diseases.
- Published
- 2007
15. [Human monoclonal antibody inhibiting reverse transcriptase activity of hepatitis B virus polymerase protein].
- Author
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Park SJ, Seol SY, Jee SR, Park ET, Lee YJ, Lee SH, Chung JM, Cho HD, Jeong YJ, Choi IH, and Park SG
- Subjects
- Antibodies, Monoclonal biosynthesis, Antibodies, Monoclonal genetics, Complementarity Determining Regions chemistry, Gene Products, pol genetics, Gene Products, pol immunology, Genetic Vectors, Hepatitis B virus enzymology, Hepatitis B virus genetics, Humans, Peptide Library, RNA-Directed DNA Polymerase genetics, Recombinant Fusion Proteins biosynthesis, Recombinant Fusion Proteins genetics, Reverse Transcriptase Inhibitors chemistry, Reverse Transcriptase Inhibitors metabolism, Antibodies, Monoclonal pharmacology, Gene Products, pol antagonists & inhibitors, RNA-Directed DNA Polymerase immunology, Reverse Transcriptase Inhibitors pharmacology
- Abstract
Background/aims: To develop a novel treatment method for hepatitis B virus (HBV) infection, we aimed to make a human monoclonal antibody inhibiting reverse transcriptase (RT) activity of P protein which was important in HBV replication by using phage display technique. Therefore, we analysed the usability of human monoclonal antibody as a protein based gene therapy., Methods: Reverse transcriptase/polymerase (RT/POL) functional motif of P protein of HBV was cloned in pMAL-c vector and expressed as maltose binding fusion protein form. The RT/POL recombinant protein (pMRT/POL) was purified by amylose resin column. Using human single chain Fv phage antibody library with 1.1 x 10(10), human antibody against pMRT/POL was selected with BIAcore panning. Selected antibody fragments were analyzed for the activity of RT inhibition. Finally, they were analyzed for the affinity with BIAcore and the complementarity determining regions with nucleotide sequencing., Results: pMRT/POL recombinant protein expressed in E. coli showed RT activity, 1 micro g of recombinant protein had an activity equivalent to 5 unit of MMLV RT. By BIAcore panning, we could select 3 clones; POL-A5, POL-B8 and POL-B12. Each clone's RT inhibiting activity were 52-82%, affinity against antigen were 8.15 x 10(-8) M to 1.75 x 10(-6) M., Conclusions: Human monoclonal antibodies produced in this study showed low affinity, but efficiently inhibited the activity of RT in vitro. If POL-A5, POL-B8, and POL-B12 can be converted to intracellular antibody form, it can be used for protein-based gene therapy by inhibiting the replication through the neutralization of polymerase protein of HBV.
- Published
- 2007
16. [Evaluation of COSMOsensor Glucose Monitoring System.].
- Author
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Yoo EH, Cho HJ, Ki CS, and Lee SY
- Abstract
Background: Glucometer is a most widely-used point-of-care testing (POCT) analyzer and plays an important role in diabetes management. We evaluated the performance of the recently developed glucometer, COSMOsensor (Cosmogenome Inc., Seoul, Korea), comparing it with three foreign-made glucometers., Methods: COSMOsensor was evaluated for linearity, precision, comparison of method and analysing time as well as the effect of operator. Other glucometers, Accu-Chek inform (Roche Diagnostics LTD., Mannheim, Germany), Precision(TM)PCx (Abbott Laboratories, Bedford, MA, USA), and SureStep(R)Flexx (LifeScan Inc., Milpitas, CA, USA) were evaluated for the same categories according to NCCLS guidelines., Results: All four glucometers showed a good linearity (r>/=0.9814) and the within-run and total-run coefficients of variation (CVs) were within 3.5%. A high correlation (r>/=0.9659) was also found between the glucometers and Hitachi 7600 (Hitachi Co., Tokyo, Japan) in the central laboratory. Although differences with the reference method were within an allowable range, all glucometers showed variable bias compared with the reference method., Conclusions: The COSMOsensor showed a good analytical performance in linearity, precision, and correlation with the reference method, when compared with other foreign-made glucometers. Its rapid turnaround time and easy operation are appropriate for diabetes management and a rapid POCT analyzer. All glucometers showed variable biases, which might be due to different calibration status.
- Published
- 2006
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17. [Relationship between the severity of liver damage and the serum leptin level for nonalcoholic fatty liver disease].
- Author
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Kim KO, Park SH, Park CH, Han TH, Yoo KS, Kim JH, Lee MS, Kim DJ, Park CK, and Cho HD
- Subjects
- Adolescent, Adult, Fatty Liver blood, Female, Humans, Male, Middle Aged, Fatty Liver pathology, Leptin blood, Liver pathology
- Abstract
Background/aims: Nonalcoholic fatty liver disease (NAFLD) represents a spectrum of conditions that are mainly characterized histologically by macrovesicular hepatic steatosis. There are two histologic patterns of NAFLD: simple steatosis alone and steatohepatitis. The factors leading from simple steatosis to nonalcoholic steatohepatitis (NASH) are still obscure. The datas from several studies have suggested that leptin could be involved in the progression from hepatic steatosis to steatohepatitis including the fibrosis. We evaluated serum leptin levels in patients with NAFLD to determine whether any relationships existed between the leptin levels and the severity of hepatic inflammation or fibrosis., Methods: We studied 62 patients with NAFLD who were diagnosed at the Hallym University Sacred Heart Hospital from July 2001 to May 2004. We measured the serum leptin level in all cases and liver biopsy samples were obtained from 31 cases. The liver biopsy specimens were graded according to methods described by Brunt. Spearman rank correlations were used to detect the associations between the serum leptin and the various anthropometric and biochemical variables. The relationship between the histologic severity and the serum leptin level was evaluated with logistic regression analysis., Results: Serum leptin levels correlated with insulin, c-peptide, ALT and homeostasis model assessment insulin resistance, but not with BMI, age and gender. Serum leptin level also correlated with hepatic fibrosis, but not with hepatic steatosis or inflammation. However, the serum leptin level was not a significant independent predictor of the grade of hepatic steatosis, inflammation and fibrosis on the univariate analysis., Conclusions: The serum leptin level was not an independent predictor of the severity of liver damage in NAFLD.
- Published
- 2005
18. [The role of interleukin-1beta gene polymorphism in the gastric carcinogenesis].
- Author
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Kang WK, Park WS, Chin HM, and Park CH
- Subjects
- Adenocarcinoma microbiology, Aged, Female, Helicobacter Infections complications, Helicobacter pylori, Humans, Male, Middle Aged, Stomach Neoplasms microbiology, Adenocarcinoma genetics, Interleukin-1 genetics, Polymorphism, Single Nucleotide, Stomach Neoplasms genetics
- Abstract
Background/aims: This study was aimed to investigate the polymorphism of interleukin-1beta(IL-1B) and IL-1 receptor antagonist (IL-1RN) gene and the relationship between genotypes and development of gastric adenocarcinoma in Korean, and to investigate the role of Helicobacter pylori (H. pylori) infection., Methods: The study population comprised of 258 patients with gastric adenocarcinoma. They were classified according to Lauren's classification and the status of H. pylori infection. Genomic DNA was extracted from the gastric tissue. As a control, genomic DNA from peripheral lymphocyte of 100 healthy individuals was used. The amplified products of -511 bp and -31 bp fragments in the IL-1B by PCR were digested by restriction enzyme and separated for RFLP. Variable number tandem repeats were amplified and subjected to RFLP of IL-1RN., Results: There was no significant difference in the genotype of IL-1B-511T and IL-1B-31C between the adenocarcinoma group and the control group. IL-1RN allele 1 homozygote in the intestinal type showed high frequency of 91.7% (p=0.007). In the H. pylori-positive group of the adenocarcinoma, the frequency of IL-1B-31C was significantly higher than that of H. pylori-negative group (p=0.045)., Conclusions: The single nucleotide polymorphism of IL-1B-31C may contribute to the development of the gastric adenocarcinoma in the H. pylori-positive population.
- Published
- 2004
19. [The significance of urine sodium measurement after furosemide administration in diuretics-unresponsive patients with liver cirrhosis].
- Author
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Cho HS, Park GT, Kim YH, Shim SG, Kim JB, Lee OY, Choi HS, Hahm JS, and Lee MH
- Subjects
- Adult, Aged, Ascites etiology, Ascites urine, Female, Humans, Infusions, Intravenous, Male, Middle Aged, Ascites drug therapy, Diuretics administration & dosage, Furosemide administration & dosage, Liver Cirrhosis complications, Sodium urine
- Abstract
Background/aims: The diagnosis of refractory ascites means a poor prognosis for patients with liver cirrhosis. The definition of refractory ascites has already been established, but using the dosage of diuretics that correlates with the definition of refractory ascites in an out-patient department will lower the compliance of the patient, as well as causing serious complications, such as hepatic encephalopathy and hyponatremia, as the dosage of diuretics is increased. Due to this fact, it is very difficult to apply this definition of refractory ascites to patients in a domestic out-patient department. In this study, in situations where there are difficulties in applying the diuretics dosage according to definition of refractory ascites, we tried to find out whether measuring the value of urine sodium after the administration of intravenous furosemide can be the standard in early differentiation of the response to diuretics treatment., Methods: We reviewed 16 cases of liver cirrhosis with ascites and classified them into two groups by the response to diuretics. The diuretics-responsive ascites group was 8 cases and the diuretics-unresponsive ascites group consisted of 8 cases. After admission, we examined the patients' CBC, biochemical liver function test, spot urine sodium, and 24 hour creatinine clearance. After the beginning of the experiment, all diuretic therapy was stopped for 3 days. Daily we examined the patients' CBC, biochemical liver function test, and in the 3rd experiment day, we measured 24-hour urine volume and sodium. In the 4th experiment day, after sampling for ADH, plasma renin activity and plasma aldosterone level, we administrated the furosemide 80 mg I.V, and measured the amount of 8 hour urine volume and sodium., Results: The plasma aldosterone level was significantly higher in the diuretics- unresponsive ascites group than in the diuretics-responsive ascites group. In the 4th experiment day, the amount of urine volume and sodium was very significantly lower in the diuretics-unresponsive ascites group than in the diuretics-responsive ascites group (1297.5 +/-80.9 vs 2003.7 +/-114.6 ml, p<0.005, 77.3 +/-8.2 vs 211.8 +/-12.6 mEq, p<0.001)., Conclusions: In out-patient departments, the measurement of urine sodium 8 hours after administrating 80 mg of intravenous furosemide, will help in differentiating ascites patients with lower treatment response to diuretics.
- Published
- 2003
20. [Suppression of tumor formation and induction of natural killer cell activity in BALB/c nude mice by human B7-1 (CD80) gene transfer subcutaneously injected with human hepatocellular carcinoma cells (Huh-7)].
- Author
-
Yoon SK, Kim TG, Cho HI, Lee BS, Cho SH, Han NI, Lee YS, Jang JW, Chung KW, Sun HS, and Kim BS
- Subjects
- Animals, Cytotoxicity, Immunologic, Gene Transfer Techniques, Humans, Interferon-gamma metabolism, Liver Neoplasms, Experimental genetics, Mice, Mice, Inbred BALB C, Mice, Nude, Neoplasm Transplantation, B7-1 Antigen genetics, Killer Cells, Natural immunology, Liver Neoplasms, Experimental immunology
- Abstract
Background/aims: Immunogene therapy is extensively studied for a therapeutic modality of various cancers. This study was conducted to investigate the efficacy of immunogene therapy using the T-cell costimulatory molecule and human B7-1 (CD80, hB7-1) in an in vivo human hepatocellular carcinoma (HCC) model., Methods: The stable HCC cell line expressing hB7-1 gene was established using retroviral vector (Huh-7/hB7-1). Of fourteen BALB/c nude mice, 7 were subcutaneously injected with 2 X 10(6) Huh-7/hB7-1 cells, while the other 7 were injected with 2 X 10(6) Huh-7/mock cells as a control group. After the injection, the mice were observed weekly for three months for subcutaneous tumor formation. Assay for natural killer (NK) cell cytotoxicity and serum IFN-gamma was performed at 1 and 2 weeks after inoculation., Results: In BALB/c nude mice inoculated with Huh-7/hB7-1 cells, no tumor growth was observed. BALB/c nude mice inoculated with Huh-7/hB7-1 cells showed significantly increased NK cell activities of splenocytes compared with those with Huh-7/mock cells. Serum IFN-gamma was not measurable at 1 week, but significantly increased at 2 weeks after inoculation to the level of 470 pg/ml in BALB/c nude mice with Huh-7/mock cells and 521 pg/ml in BALB/c nude mice with Huh-7/hB7-1., Conclusions: Our results demonstrate the in vivo anti-tumor immunity and NK cell activation by transfer of hB7-1 gene into human HCC in xenogeneic BALB/c nude mice model. This approach may provide a tool for the development of immunogene therapies against human malignant tumors.
- Published
- 2003
21. [Five-year follow-up of clinical and laboratory data of early liver cirrhosis patients confirmed by liver biopsy].
- Author
-
Kim DU, Park GT, Koh DH, Cho HS, Kim YH, Shim SG, Kim JB, Lee SH, Choi HS, Hahm JS, and Lee MH
- Subjects
- Adult, Female, Follow-Up Studies, Humans, Liver Circulation, Liver Cirrhosis complications, Liver Cirrhosis physiopathology, Male, Middle Aged, Prognosis, Biopsy, Needle, Liver pathology, Liver Cirrhosis pathology
- Abstract
Background/aims: It is important to evaluate the general status of the liver including the structural and inflammatory aspects, as well as the functional aspects, in order to determine a patient's treatment modality and prognosis., Methods: 55 Child-Pugh class A liver cirrhosis patients confirmed by liver biopsy have been categorized into 4 groups based on the shunt index and p-value(Y= 3.3431-0.8160 ALT/AST ratio-0.0343 X prothrombin time+2.6963 X shunt index, p = e(y)/(e(y)+1)), which was obtained by Thallium- 201 scan; group I - shunt index less than 0.3 and p-value less than 0.7; group II - shunt index less than 0.3 and p-value more than 0.7; group III - shunt index more than 0.3 and p-value less than 0.7; and group IV - shunt index more than 0.3 and p-value more than 0.7. Statistical analyses used were ANOVA, paired t-test, and Chi-square test., Results: 1. The laboratory data after a 5-year follow-up also showed a significant difference between four groups. 2. In group IV, the Child-Pugh class after 5 years worsened, and complications of liver cirrhosis such as esophageal varix, ascites, and hepatic encephalopathy occurred more frequently. 3. In group II, the laboratory data after a 5-year follow-up indicated some improvement., Conclusion: It can be seen that even early in patients with initially the same cirrhosis, the course of the illness can progress to a variety of different situations. The measurement of shunt index and the p-value of cirrhosis will be more helpful in the follow-up evaluation and predicting its prognostic index in liver cirrhosis patients.
- Published
- 2002
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