1.Induction of growth inhibition and apoptosis in human endometrial cancer cells by histone deacetylase inhibitors.
Su Yeon LIM ; June Kuk CHOI ; So Jin SHIN ; Sang Hoon KWON ; Chi Heum CHO ; Soon Do CHA ; Dong Kum SONG
Korean Journal of Obstetrics and Gynecology 2009;52(9):911-919
OBJECTIVE: Endometrial cancer is the most common malignant tumor of the female genital tract. Its incidence has increased in recent years, making up 13% of female genital cancers. Nevertheless, the search for agents effective in the treatment of either advanced or recurrent endometrial cancer has been disappointing. Histone deacetylase inhibitors (HDACIs) were recently found to be well-tolerated in patients with hematologic and solid malignancies. HDACIs have been shown to inhibit cancer cell proliferation, stimulate apoptosis, and induce cell cycle arrest. Our purpose was to investigate the antiproliferative effects of the HDACIs (sodium butyrate and HDAC-I1) against endometrial cancer cell line (Hec 1A) and normal endometrial cell line (T-HESCs). METHODS: MTS reduction assay was carried out to determine the cell viability. Cell cycle analysis and DNA fragmentation assay was done by fluorescent activated cell sorter analysis. The expression of cell cycle-regulatory and apoptosis-related proteins were evaluated by Western blot. Caspase 3 and 7 activity were measured by immuno-flouorescent staining. RESULTS: Each sodium butyrate and HDAC-I1 induced growth inhibition in a dose and time dependent manner in endometrial cancer cells but did not induce growth inhibition in normal endometrial cells. Treatment with each drugs in endometrial cancer cells increased the percentage of cells in subG1 phase. The expression of p53, p21, p27, FAS, and FAS legand were increased and it was associated with increased p21 and p27 expression in a p53-dependent manner. Activation of caspase-3, 7, 8, 9 and down-regulation of Bcl-2, up-regulation of Bax, with concomitant increase in PARP cleavage, were observed. CONCLUSION: These results demonstrate that sodium butyrate induced growth inhibition and apoptosis in human endometrial cancer cells rising their possibility applicable against human endometrial cancers.
Apoptosis
;
Blotting, Western
;
Butyrates
;
Caspase 3
;
Cell Cycle
;
Cell Cycle Checkpoints
;
Cell Line
;
Cell Proliferation
;
Cell Survival
;
DNA Fragmentation
;
Down-Regulation
;
Endometrial Neoplasms
;
Female
;
Histone Deacetylase Inhibitors
;
Histone Deacetylases
;
Histones
;
Humans
;
Incidence
;
Proteins
;
Sodium
;
Up-Regulation
2.The Effect of a New Carbon Stent for Preventing Restenosis-Prospective, Randomized Study for Preventing Metal Allergy.
Tae Hyung LIM ; Moo Hyun KIM ; Dong Sung KUM ; Hye Jin KIM ; Hyung Kwon KIM ; Soo Keol LEE ; Tae Ho PARK ; Kwang Soo CHA ; Young Dae KIM ; Hong Seok KIM ; Ki Hoon SONG
Korean Circulation Journal 2007;37(6):258-264
BACKGROUND AND OBJECTIVES: Metal allergy has been reported to be related to stent restenosis. Therefore, we sought to investigate the incidence of metal allergy with new carbon stent with ion implantation technique and its relationship to restenosis. SUBJECTS AND METHODS: Between April 2002 and June 2004, 128 patients (100 male, mean age 60+/-10 years) were included in this study. The clinical diagnoses of the study patients included 64 acute myocardial infarction, 24 unstable angina and 40 stable angina patients. Patients were randomly assigned to receive either an Arthos Inert Stent (the study group) or an Arthos stent (the control group), with follow-up angiography scheduled 6 months later. Three months after stent implantation, skin patch tests, for the detection of metal allergies, were performed with manganese, molybdenum, nickel and chromium. RESULTS: There were no differences between the age, genders, risk factors and multi-vessel involvement between the two groups, as well as no differences in the angiographic parameters and restenosis (p>0.05). There were no differences in the positive rates of the skin tests between the Arthos stent and Arthos Inert stent groups or between the restenosis and no-restenosis groups (p>0.05). CONSLUSION: The new carbon stent, with ion implantation, did not reduce coronary restenosis. An allergic reaction was not related to the stent technology or stent restenosis.
Angina, Stable
;
Angina, Unstable
;
Angiography
;
Carbon*
;
Chromium
;
Coronary Artery Disease
;
Coronary Restenosis
;
Diagnosis
;
Follow-Up Studies
;
Humans
;
Hypersensitivity*
;
Incidence
;
Male
;
Manganese
;
Molybdenum
;
Myocardial Infarction
;
Nickel
;
Patch Tests
;
Risk Factors
;
Skin
;
Skin Tests
;
Stents*
3.Histomorphometric Study of Dental Implants With RBM And SLA Surface In The Rabbit Tibia.
Kook Hyeon SONG ; Il Kyu KIM ; Kum Soo JANG ; Kyu Nam KIM ; Jin Ung CHOI
Journal of the Korean Association of Oral and Maxillofacial Surgeons 2006;32(6):514-523
The purpose of the present study was to evaluate the effects of several implant surface treatments to the bone formation, by placing Machined implants, 75 micrometer Calcium phosphate-blasted implants and Al2O3- blasted and acid-etched implants in rabbit tibia through histomorphometric study. Two animals of each group were sacrificed at 2, 4, 8 weeks. The specimens containing the implants were dehydrated and embedded into hard methylmethacrylate plastic. Thereafter, the sections were ground to 50 micrometer. The specimens were stained with Villanueva bone stain for a light microscopic study. The results were as follows; 1. When the surface roughness of three different implants was measured by Surfcorder, the Ra of the Machined group, the RBM group and the SLA group was 0.16 micrometer, 0.44 micrometer, and 1.08micro meter. 2. When examining the surfaces of the implants in the scanning microscope, Machined implant has the smooth surface with a few scratches, RBM implant has the rough surface with curled ridges and valleys, and SLA implant has the rough surface structures such as sharp protruding parts and micropits measuring 1-2 micrometer in diameter. 3. After 2 weeks of implantation, the percentage of bone-to-implant contact of the Machined group, the RBM group and the SLA group was 26.86%, 35.40% and 45.99%. However, its differences between each group decreased during the healing periods. 4. After 2 weeks of implantation, the percentage of bone area inside the threads of the Machined group, the RBM group and the SLA group were 21.55%, 30.43% and 41.18%. However, its difference of bone area between machined group and surface treatment groups was maintained but the difference within the surface treatment groups decreased during the healing periods. In summary, the amount of bone formation in RBM and SLA group was greater than Machined group in early healing stage. These results suggest that RBM and SLA implants can reduce the healing period for osseointegration and may be suitable for early function.
Animals
;
Calcium
;
Dental Implants*
;
Methylmethacrylate
;
Osseointegration
;
Osteogenesis
;
Plastics
;
Tibia*
4.A Case of Fat Embolism Syndrome of Fat Globules Found in BAL Fluid after Recovery from Acute Respiratory Failure.
Song Ree PARK ; Hyun Soo KIM ; Jae Hyung LEE ; Sang Heon KIM ; Tae Hyung KIM ; Ho Joo YOON ; Sung Soo PARK ; Dong Ho SHIN ; Chan Kum PARK
Tuberculosis and Respiratory Diseases 2006;61(6):562-566
Fat embolism syndrome is a rare clinical diagnosis of dyspnea with acute respiratory failure and neurological signs caused by a traumatic long bone fracture. We report a case of fat embolism in a 22 year-old man after a traffic accident. Dyspnea and stuporous mental changes developed on the 1st day after the external fixation operation of a left metaphyseal femur fracture. On the following day, he was transferred from a hospital to this one because of acute respiratory failure. After recovery, macrophages with fat droplets were found in the bronchoalveolar lavage fluid 1. It is important to diagnose a fat embolism as the correct cause of acute respiratory failure through the BAL in the acute state of fat embolism syndrome It is believed that clinically apparent or sometimes hidden fat embolism syndrome can be diagnosed from the BAL during the recovery state.
Accidents, Traffic
;
Bronchoalveolar Lavage
;
Bronchoalveolar Lavage Fluid
;
Diagnosis
;
Dyspnea
;
Embolism, Fat*
;
Femur
;
Fractures, Bone
;
Humans
;
Macrophages
;
Respiratory Insufficiency*
;
Stupor
;
Young Adult
5.Lower gastrointestinal bleeding due to cytomegalovirus ileal ulcers in an immunocompetent man.
Sung Woo CHOI ; Jun Pyo CHUNG ; Young Koo SONG ; Young Nyun PARK ; Juck Kum CHU ; Dong Joo KIM ; Jae Han JUNG ; Chang Hoon LEE ; Se Joon LEE ; Hyo Jin PARK ; Kwan Sik LEE ; Sang In LEE ; In Suh PARK ; Seung Kook SOHN
Yonsei Medical Journal 2001;42(1):147-151
Cytomegalovirus (CMV) infections are commonly reported in severely immunocompromised hosts and ulcers of the alimentary tract are frequently observed in systemic CMV infections. However, invasive and ulcerative disease of the gastrointestinal (GI) tract caused by CMV has also been reported in healthy adults. Many reports show that a CMV infection can produce localized ulcerations in the esophagus, stomach, small intestine, and colon in nonimmunocompromised individuals. The most common site of involvement by CMV infection in the GI tract is the colon followed by the upper GI tract and the least common site is the small intestine. Although GI bleeding is one of the major presenting symptoms of patients with CMV infections of the GI tract, lower GI bleeding due to CMV ileal ulcers in immunocompetent patients, to our knowledge, has not been reported in the English literature. Recently, we experienced a case of lower GI bleeding due to CMV ileal ulcers in a 57-year-old man who had no evidence of immunocompromise. This case suggests that small intestinal ulcers due to CMV infection should be included in the differential diagnosis of lower GI bleeding even in immunocompetent hosts.
Case Report
;
Cytomegalovirus Infections/complications*
;
Gastrointestinal Hemorrhage/etiology*
;
Human
;
Ileal Diseases/complications*
;
Male
;
Middle Age
;
Ulcer/complications*
6.Langerhans' Cell Histiocytosis in Chest Wall.
Dong Seop SONG ; Heng Ok JEE ; Won Sang CHUNG ; Jung Ho KANG ; Young Hak KIM ; Hyuck KIM ; Chul Bum LEE ; Shi Young HAM ; Seok Chol JEON ; Won Mi LEE ; Chan Kum PARK
The Korean Journal of Thoracic and Cardiovascular Surgery 2001;34(6):506-510
Langerhans' Cell Histiocytosis(LCH) is a disease of unknown origin, characterized by abnormal proliferation of Langerhans' cells. Previously, it has been called histiocytosis X, which included eosinophilic granuloma, Hand-Sch ller-Christian's disease, and Letterer-Siwe disease. Any organs or tissues such as skin, lymph nodes, bone and bone marrow can be involved. However, LCH of chest wall is rarely reported in our country. We experienced a 18 month old male child, who had osteolytic lesion involving the rib with axillary lymph node metastasis. The tumor was confirmed as LCH after surgery.
Bone Marrow
;
Child
;
Eosinophilic Granuloma
;
Histiocytosis*
;
Histiocytosis, Langerhans-Cell
;
Humans
;
Infant
;
Lymph Nodes
;
Male
;
Neoplasm Metastasis
;
Ribs
;
Skin
;
Thoracic Wall*
;
Thorax*
7.The relationship between neonatal hypoglycemia and newborn iron status in hypoglycemic large-for-gestational age infants.
Myung Ja YUN ; In Ho SONG ; Hye Lim JUNG ; Dong Hyuck KUM
Journal of the Korean Pediatric Society 1992;35(12):1667-1673
No abstract available.
Humans
;
Hypoglycemia*
;
Infant*
;
Infant, Newborn*
;
Iron*
8.A clinical trial of four different models of multiload copper intrauterine contraceptive device in Korean women.
Hyun Mo KWAK ; Chan Ho SONG ; Dae Hyun KIM ; Dong Jae CHO ; Hyock Dong HAN ; Kum Ja PARK ; Mi Young KWAK ; Mi Suck LEE
Korean Journal of Obstetrics and Gynecology 1991;34(8):1106-1117
No abstract available.
Copper*
;
Female
;
Humans
;
Intrauterine Devices*
9.A Case of Intramedullary Glioblastoma Multiforme Involving Thoracic Cord in Child.
Shi Hun SONG ; Hee Jung YUN ; Dong In KUM ; Youn KIM
Journal of Korean Neurosurgical Society 1982;11(3):353-356
Primary spinal glioblastoma multiforme is very rare, especially in childhood. 13-year-old boy was admitted to our neurosurgical department because of paraparesis, sensory loss below T10 and sphincter disturbance. Thoracic myelogram showed complete obstruction at T10 level and total laminectomy with partial removal of the intramedullary cord tumor mass was performed under the impression of spinal cord tumor. Postoperatively, his symptoms and signs unchanged. Pathological diagnosis was intramedullary glioblastoma multiforme involving thoracic cord.
Adolescent
;
Child*
;
Diagnosis
;
Glioblastoma*
;
Humans
;
Laminectomy
;
Male
;
Paraparesis
;
Spinal Cord Neoplasms
10.A Case of Primitive Clioma.
Shi Hun SONG ; Kyung Hoon MIN ; Dong In KUM ; Youn KIM ; Je G CHI
Journal of Korean Neurosurgical Society 1982;11(3):379-384
Among the intracranial glioma, primitive glioma is very rare. We report a case of primitive glioma involving left parietofrontotemporal lobe of 8-year-old boy who had about 12 months duration of right sided hemiparesis, headache, vomiting and papilledema. CT scan showed a large, well defined round area of low density with peripheral rim of high density and high density small mass suggesting mural nodule in left frontoparietotemporal region. A left frontoparietotemporal osteoplastic craniotomy was carried out. A small nodule and cystic membrane containing pale yellowish colored proteinous cystic fluid were almost totally removed without difficulty. Postoperatively, the right hemiparesis and headache gradually cleared. Pathologic diagnosis was primitive glioma.
Child
;
Craniotomy
;
Diagnosis
;
Glioma
;
Headache
;
Humans
;
Male
;
Membranes
;
Papilledema
;
Paresis
;
Tomography, X-Ray Computed
;
Vomiting

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