1.Optimal Extraction Conditions of Anti-obesity Lipase Inhibitor from Phellinus linteus and Nutritional Characteristics of the Extracts.
Jong Kug LEE ; Jung Hwa SONG ; Jong Soo LEE
Mycobiology 2010;38(1):58-61
In an effort to develop novel mushroom-derived anti-obesity nutraceuticals, water and ethanol extracts containing the lipaseinhibitory compound from Phellinus linteus were prepared, and their nutritional components were determined. The optimal conditions for the extraction of P. linteus lipase inhibitor involved the treatment of the fruiting bodies with distilled water at 80degrees C for 72 hr and 80% ethanol at 100degrees C for 60 hr, respectively. The distilled water extract and ethanol extract contained 10.9% and 6.11% of crude protein, and 0.96% and 15.86% of crude fat, respectively. Additionally, the distilled water extract contained a large quantity of minerals, including 239.5 mg of K, 39.3 mg of Mg, and 39.3 mg of Na. The free amino acid content of the distilled water extracts was also higher than that of the ethanol extracts, and in particular, the distilled water extracts contained 5,139 mg of asparagine, 3,891 mg of tryptophan, 2,598 mg of alanine, and 2,066 mg of serine in 100 g of the distilled water extracts. 100 g of the distilled water and ethanol extracts were found to contain 12.31 g and 8.16 g of malic acid, respectively.
Alanine
;
Asparagine
;
Dietary Supplements
;
Ethanol
;
Fruit
;
Lipase
;
Malates
;
Minerals
;
Serine
;
Tryptophan
;
Water
2.A case of endometrial cancer in a single horn of bicornuate uterus.
Sang Kug BYUN ; Hyuk Woo LEE ; Yong Ho JO ; Hwa Yung CHOI
Korean Journal of Obstetrics and Gynecology 2003;46(1):180-183
The occurrence of carcinoma in a congenital uterine anomaly is uncommon. Indeed, malignancy of the uterine fundus with congenital uterine anomaly is quite rare, with fewer than 50 cases reported in the world liturature. Many patients go through life without the knowledge of their presence, and they are discovered at autopsy. Early diagnosis and proper management is necessary to decrease the high mortality. We present a case of endometrial carcinoma in a single horn of a bicornuate uterus.
Animals
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Autopsy
;
Early Diagnosis
;
Endometrial Neoplasms*
;
Female
;
Horns*
;
Humans
;
Mortality
;
Uterus*
3.Endovascular Treatment of Cerebral Aneurysms with Guglielmi Detachable Coils: Retrospective Review of a 4-Year Experience.
Jun Kyeung KO ; Chang Hwa CHOI ; Tae Hong LEE ; Seung Kug BAIK
Journal of Korean Neurosurgical Society 2003;34(5):419-427
OBJECTIVE: The authors evaluate the usefulness, results, and technical problem of endovascular treatment of cerebral aneurysms with Guglielmi detachable coil(GDC). METHODS: Forty patients with 31 ruptured and 11 unruptured aneurysms were treated with GDC embolization. Twenty-four aneurysms were located in the anterior circulation and 18 in the posterior circulation. Aneurysms size was categorized small(n=31) or large(n=11) and neck size was categorized narrow(n=30) or wide(n=12). We statistically analyzed occlusion rate according to the location, rupture, size, and neck size of aneurysms, and investigated the procedure-related complications and clinical outcomes. RESULTS: GDC treatment of aneursyms was successful in 40 aneurysms of 39 patients(95.2%). Total occlusion was achieved in 24(60.0%) cases, subtotal occlusion in 12(30%), and incomplete occlusion in 4(10.0%). Each total occlusion rate was 69.0% in small-sized, 36.4% in large-sized, 69.0% in narrow-necked, and 36.4% in wide-necked aneurysms. Location and rupture of aneurysms did not influence occlusion rate. The technical complications included 4 thromboembolisms, 3 parent artery occlusions, and 1 perforation of aneurysm. Procedure-related morbidity and mortality were 10.3% and 2.6%. 3 subtotally or incompletely embolized aneurysms in posterior circulation rebled during the follow-up period. CONCLUSION: The results of this study indicate that endovascular GDC treatment is an appropriate therapeutic alternative in cerebral aneurysms. However, the rebleeding by aneurysmal recanalization or regrowth is a major limitation of GDC treatment. Follow-up angiography and further technical improvement are mandatory to overcome rebleeding.
Aneurysm
;
Angiography
;
Arteries
;
Follow-Up Studies
;
Humans
;
Intracranial Aneurysm*
;
Mortality
;
Neck
;
Parents
;
Retrospective Studies*
;
Rupture
;
Thromboembolism
4.The Usefulness of Scoring System Distinguishing between Benign and Malignant Breast Masses on Ultrasonogram.
Won Kyu PARK ; Kyoung Kug BAE ; Jong O CHOI ; Mi Soo HWANG ; Woo Mok BYUN ; Bok Hwan PARK ; Hwa Jin LEE
Journal of the Korean Radiological Society 1997;36(5):909-914
PURPOSE: To evaluate a scoring system based on ultrasonographic findings as a means of distinguishing between benign and malignant solid breast masses. MATERIALS AND METHODS: Histopathologically confirmed benign (n=102) and malignant (n=73) breast masses which ultrasonographic findings of histopathologic masses were reviewed for shape, border, internal echo, boundary echo, posterior echo, lateral echo, and ratio of transverse to anteroposterior diameter. There were statistically significant (p < 0.001 ; chi-square test) differences in each feature for benign and malignant lesions. The findings suggesting benignancy, equivocality, and malignancy of the masses were scored as 0, 1, and 2 respectively. The scores for all features were summed for each lesion. An ROC curve was obtained. RESULTS: When the score was 6, five benign and seven malignant cases were found. Scores of 0 and 1 indicated benign masses and a score above 11, malignancy. The turning point was a score of 6, so a score above 7 suggests malignancy. CONCLUSION: A ultrasonographic scoring system can be used to characterise breast masses. A score of a mass above 7 suggests probable malignancy and a score below 5 suggests benignancy.
Breast*
;
ROC Curve
;
Ultrasonography*
5.CT Findings of Abdominal Tuberculosis.
Byung Soo KIM ; Sang Hwa NAM ; Chang Ho CHOI ; Suck Hong LEE ; Do Ig JEON ; Ci Soon YOON ; Kug Sang HAN
Journal of the Korean Radiological Society 1994;31(4):709-714
PURPOSE: To evaluate the CT features of abdominal tuberculosis by the pattern anaylsis. MATERIALS AND METHODS: We retrosepctively reviewed the CT findings of confirmed abdominal tuberculosis in 16 patients. Of the 16 patients, 1 was man and the remaining 15 were women with an average age of 34.1 years and the highest incidence in the twenties of age. Intravenous and oral contrast agents were used in all patients. The amount and location of ascites and the changes in the omenturn, mesentery, bowel wall, and peritoneum were analyzed. The morphologic feature, size and main compartment of involvement were also evaluated in the cases with lymphadenopathy as well as other changes in intraabdominal organs. RESULTS: The abdominal tuberculosis was more common in the female(15/16, 93.8%) and could be classified into 3 patterns on their CT findings;Complex ascitic, lymphadenopathy, or abscess forms. The complex ascitic form(10/16, 62.5%) was most commonly seen and characterized by uneven distribution and Ioculation of intraperitoneal fluid collection and marked changes of the omenturn and mesentery. The lymphadenopathy form(3/16, 18.8%) was characterized by central low density and peripheral rim enhancement on postcontrast CT with common involvements of porta hepatis and upper abdominal and paraaortic lymph nodes. The abscess form(3/16, 18.8%) was mainly related to the pelvic abscesses. CONCLUSION: CT was valuable in analyzing the patterns of the lesions and making a diagnosis of abdominal tuberculosis.
Abscess
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Ascites
;
Contrast Media
;
Diagnosis
;
Female
;
Humans
;
Incidence
;
Lymph Nodes
;
Lymphatic Diseases
;
Mesentery
;
Peritoneum
;
Tuberculosis*
6.A Salmonella Typhi ghost induced by the E gene of phage φX174 stimulates dendritic cells and efficiently activates the adaptive immune response
Gayeon WON ; Seong Kug EO ; Sang Youel PARK ; Jin HUR ; John Hwa LEE
Journal of Veterinary Science 2018;19(4):536-542
Previously, we genetically engineered a Salmonella Typhi bacterial ghost (STG) as a novel inactivated vaccine candidate against typhoid fever. The underlying mechanism employed by the ghost in stimulating the adaptive immune response remains to be investigated. In this study, we aimed to evaluate the immunostimulatory effect of STG on mouse bone marrow-derived dendritic cells (BMDCs) and its activation of the adaptive immune response in vitro. Immature BMDCs were stimulated with STG, which efficiently stimulated maturation events in BMDCs, as indicated by upregulated expressions of CD40, CD80, and major histocompatibility complex class II molecules on CD11⁺ BMDCs. Immature BMDCs responded to STG stimulation by significantly increasing the expression of interleukin (IL)-6, which might indicate the induction of dendritic cell maturation in vivo (p < 0.05). In addition, ghost-stimulated murine BMDCs showed significant expressions of interferon gamma and IL-4, which can drive the development of Th1 and Th2 cells, respectively, in co-cultured CD4⁺ T cells in vitro. These results suggest that STG can effectively stimulate maturation of BMDCs and facilitate subsequent immune responses via potent immunomodulatory cytokine responses.
Adaptive Immunity
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Animals
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Bacteriophages
;
Dendritic Cells
;
Immunity, Innate
;
In Vitro Techniques
;
Interferons
;
Interleukin-4
;
Interleukins
;
Major Histocompatibility Complex
;
Mice
;
Salmonella typhi
;
Salmonella
;
T-Lymphocytes
;
Th2 Cells
;
Typhoid Fever
7.A Preliminary Gastric Emptying Study Using 99mTc-DTPA Scan after Pylorus-Preserving Pancreatoduodenectomy.
Sung Kug PARK ; Young Cheol LEE ; Hyeon Joo SHIN ; Lee Su KIM ; Young Min WOO ; Ma Hae CHO ; Bong Hwa LEE
Journal of the Korean Surgical Society 2004;66(1):33-36
PURPOSE: Pylorus-preserving pancreatoduodenectomy (PPPD) is an alternative surgical procedure for periampullary lesions. Early delayed gastric emptying is the most common and frustrating complication in the immediate postoperative period after PPPD and late delayed gastric emptying has been reported in some long-term follow-up studies. We evaluated the incidence of early delayed gastric emptying and analyzed temporal changes in gastrointestinal function after PPPD. METHODS: The incidence of early delayed gastric emptying was retrospectively evaluated from the medical records of 15 patients who underwent PPPD. Gastric emptying tests (GETs) using 99mTc-DTPA scan were performed on 11 of the patients every three months until 1 year, where possible. RESULTS: The incidence of early delayed gastric emptying was 6.7%. Five of the eight patients (62.5%) and six of the eight (75%) who underwent scintigraphy at 3 months and 6 months respectively, showed delayed gastric emptying. But at 12 months, all of the four patients who underwent GETs showed normal gastric emptyings. CONCLUSION: The incidence of early delayed gastric emptying after PPPD was 6.7%. Though there were few symptoms in long-term follow-up study using 99mTc-DTPA scan, delayed gastric emptying was frequently observed 3 to 9 months after PPPD. However, gastric emptying might be normalized in almost all patients around 1 year after PPPD.
Follow-Up Studies
;
Gastric Emptying*
;
Humans
;
Incidence
;
Medical Records
;
Pancreaticoduodenectomy*
;
Postoperative Period
;
Radionuclide Imaging
;
Retrospective Studies
8.Sur8 mediates tumorigenesis and metastasis in colorectal cancer.
Young Mi LEE ; Saluja KADUWAL ; Kug Hwa LEE ; Jong Chan PARK ; Woo Jeong JEONG ; Kang Yell CHOI
Experimental & Molecular Medicine 2016;48(7):e249-
Sur8, a scaffold protein of the Ras pathway, interacts with Ras and Raf and modulates the Ras-extracellular signal-regulated kinase (ERK) pathway. Here we show that Sur8 is overexpressed in established human colorectal cancer (CRC) cell lines and CRC patient tissues. Moreover, Sur8 expression is increased during liver metastasis in CRC patients. Sur8 knockdown decreases ERK and Akt activities in CRC cell lines, regardless of their K-Ras, B-Raf or PI3K mutation status. Overexpression or knockdown of Sur8 increases or decreases, respectively, the proliferation or transformation of CRC cell lines. Sur8 knockdown attenuates the migration and invasion of HCT116 CRC cells. Subcutaneous or orthotopic injection of HCT116 cells harboring a doxycycline (Dox)-mediated Sur8 knockdown system in nude mice resulted in decreased tumorigenic potential and inhibited the liver metastatic potential of HCT116 cells. Taken together, our data support the role of Sur8 as a promoter of tumorigenesis and liver metastasis in CRC through its modulation of the Ras-ERK and PI3K-Akt signaling pathways.
Animals
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Carcinogenesis*
;
Cell Line
;
Colorectal Neoplasms*
;
Doxycycline
;
HCT116 Cells
;
Humans
;
Liver
;
Mice
;
Mice, Nude
;
Neoplasm Metastasis*
;
Phosphotransferases
9.CD8+ T Cell-mediated Immunity Induced by Heterologous Prime-boost Vaccination Based on DNA Vaccine and Recombinant Vaccinia Virus Expressing Epitope.
Seong Ok PARK ; Hyun A YOON ; Abi George ALEYAS ; John Hwa LEE ; Joon Seok CHAE ; Seong Kug EO
Immune Network 2005;5(2):89-98
BACKGROUND: DNA vaccination represents an anticipated approach for the control of numerous infectious diseases. Used alone, however, DNA vaccine is weak immunogen inferior to viral vectors. In recent, heterologous prime-boost vaccination leads DNA vaccines to practical reality. METHODS: We assessed prime-boost immunization strategies with a DNA vaccine (minigene, gB498-505 DNA) and recombinant vaccinia virus (vvgB498- 505) expressing epitope gB498-505 (SSIEFARL) of CD8+ T cells specific for glycoprotein B (gB) of herpes simplex virus (HSV). Animals were immunized primarily with gB498-505 epitope-expressing DNA vaccine/recombinant vaccinia virus and boosted with alternative vaccine type expressing entire Ag. RESULTS: In prime-boost protocols using vvgBw (recombinant vaccinia virus expressing entire Ag) and vvgB498-505, CD8+ T cell-mediated immunity was induced maximally at both acute and memory stages if primed with vvgBw and boosted with vvgB498-505 as evaluated by CTL activity, intracellular IFN-staining, and MHC class I tetramer staining. Similarly gB498-505 DNA prime-gBw DNA (DNA vaccine expressing entire Ag) boost immunization elicited the strongest CD8+ T cell responses in protocols based on DNA vaccine. However, the level of CD8+ T cell-mediated immunity induced with prime-boost vaccination using DNA vaccine expressing epitope or entire Ag was inferior to those based on vvgBw and vvgB498-505. Of particular interest CD8+ T cell-mediated immunity was optimally induced when vvgB498-505 was used to prime and gB DNA was used as alternative boost. Especially CD8+ T cell responses induced by such protocol was longer lasted than other protocols. CONCLUSION: These facts direct to search for the effective strategy to induce optimal CD8+ T cell-mediated immunity against cancer and viral infection.
Animals
;
Communicable Diseases
;
DNA*
;
Glycoproteins
;
Immunity, Cellular*
;
Immunization
;
Memory
;
Simplexvirus
;
T-Lymphocytes
;
Vaccination*
;
Vaccines, DNA
;
Vaccinia virus*
;
Vaccinia*
10.A Pilot Study as the Biochip Based Gene Expression Profiling in Patients with Hyperplastic Colonic Polyp.
Ung Chae PARK ; Kyong Rae KIM ; Moo Kyung SEONG ; Joon Ho WANG ; Jae Dong LEE ; Sang Yoon KIM ; Seung Hwa PARK ; Dong Kug CHOI ; Chan Gil KIM
Journal of the Korean Society of Coloproctology 2006;22(4):241-249
PURPOSE: A microarray-based gene expression analysis may offer a rapid and efficient means for assessing. However, the molecular genetic change in nonneoplastic colonic polyp is still poorly understood. To elucidate the molecular genetic basis, We now report the results of our initial microarray data to analyze the genom pattern in patients with hyperplastic polyps of colon. METHODS: 36 samples (18 pairs of colonic polyps and normal colonic mucosa were) harvested from colonoscopic biopsy. 3 of 18 colonic polyps were pathologically identified as the serrated type of hyperplastic polyp. We used the oligonucleotide microarray technique for analysis of the expression profiles of serrated polyps and normal mucosa. For the identification of differentially expressed genes, SAM (Significance Analysis of Microarray) package method was used. The result was analysed by using global normalization, intensity dependent normalization and block-wise normalization. RESULTS: Polypectomy specimens microscopically showed the pathologically characteristic serration with a saw-teeth like luminal border (branching of the crypts). 8 genes including RHEB (Ras homolog enriched in brain), WASF2 (WAS protein family, member 2), TYRP1 (Tyrosinase-related protein 1), VSX1 (Visual system homeobox 1 homolog), ROS1 (V-ros UR2 sarcoma virus oncogene homolog 1), WEE1 (WEE1 homolog), TEC (Tec protein tyrosine kinase), TNFRSF10A (Tumor necrosis factor receptor superfamily, member 10a) in serrated polyp were up-regulated by more than 10 times as compared with normal colonic mucosa. On the other hand, 6 genes including SIAT7D (Sialyltransferase 7D), DRD1 (Dopamine receptor D1), SIAT1 (Sialyltransferase 1), ITSN1 (Intersectin 1), TNFSF12 (Tumor necrosis factor superfamily, member 12), CHES1 (Checkpoint suppressor 1) were down-regulated by less than a tenth of the expression as compared with normal colonic mucosa. CONCLUSIONS: Serrated polyps as a subset of hyperplastic colonic polyps were analyzed with the oligonucleotide microarray technique. We authors could identify 14 genes (8 up-regulated and 6 down-regulated genes) that showed the significant change of expression as compared with normal colonic mucosa. Specifically, we believe that current study will serve as a fundamental base to offer a bioinformative characteristics of the serrated colonic polyp in future clinical applications.
Biopsy
;
Colon*
;
Colonic Polyps*
;
Gene Expression Profiling*
;
Gene Expression*
;
Genes, Homeobox
;
Hand
;
Humans
;
Molecular Biology
;
Mucous Membrane
;
Necrosis
;
Oligonucleotide Array Sequence Analysis
;
Oncogenes
;
Phenobarbital
;
Pilot Projects*
;
Polyps
;
Sarcoma
;
Tyrosine