1.Familial Metaphyseal Dysplasia: Report 2 Cases
Kong Woong KWON ; Tae Sung CHUNG
The Journal of the Korean Orthopaedic Association 1972;7(4):469-472
Authors present two casas of familial metaphyseal dysplasia which was first described by Pyle as a skeletal disorder affecting the metaphyseal region of tubular bones. The cases reported here bear some resemblance to that of Bawkin and Krida.
3.Three Cases of Heterotopic Pancreas of the Stomach.
Eun Joo KIM ; Sung Kong LEE ; Sei Ok YOON
Korean Journal of Gastrointestinal Endoscopy 1986;6(1):63-66
Heterotopic panereas is pancreactie tissue occuring outside its normal anatomical location and without any connection and normal pancreas and it is a developmental anormaly. The most commen site is stomach(esp. greater curvature of the antrum), duodenum and jejunum, In majority of cases heterotopic pancreas does not produce symptoms. When it produces complications, the symptoms depend on the site of lesion and the size of mass. Pathologically, the heterotopic pancreatic tissue is subject to all the lesions found in the normally placed pancreas. Tbe smooth broad base intramural defect with central niche ie typical radiologic fiadings of heterotoPic pancreas. Gastrofiberscopy revealed a small round, submucosal projection with a central umblication. The lesions are frequently confused with polys, lymphoma, in.tramural neoplasm and gastric uleer. Accurate diagnosis may prevent needless surgical procedures. Three cases of heterotopic pancreas of stomach were reported and the pertinent literature were reviewed briefly.
Diagnosis
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Duodenum
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Jejunum
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Lymphoma
;
Pancreas*
;
Stomach*
4.Thyroid function Study in Respiratory distress Syndrome.
Sung Soo KONG ; Mi Young CHUNG ; Dong Hyunk KUM
Journal of the Korean Pediatric Society 1990;33(10):1394-1398
No abstract available.
Thyroid Gland*
5.MicroRNA Dysregulations in Gastrointestinal Cancers: Pathophysiological and Clinical Perspectives.
William KK WU ; Joseph JY SUNG
Intestinal Research 2012;10(4):324-331
Two common gastrointestinal cancers, namely, gastric and colorectal cancers, cause high mortality and morbidity. The development of gastrointestinal cancers usually follows stepwise processes with recognizable pre-neoplastic changes. A class of noncoding RNA known as microRNA (miRNA) is increasingly recognized to play pleiotropic functions in the multistep development of gastrointestinal cancers. Abnormal patterns of miRNA expression in gastric and colorectal cancers have been widely reported. These dysregulated miRNAs function as novel proto-oncogenes and tumor-suppressor genes by controlling cellular malignant phenotypes, including unchecked cell proliferation, resistance to apoptosis, enhanced invasiveness and metastasis, and angiogenesis. Moreover, certain polymorphisms in miRNA genes or miRNA-binding sites are associated with disease risks whereas detection of circulating or fecal miRNAs may facilitate early diagnosis. The prognostic functions of a number of dysregulated miRNAs in gastrointestinal cancers have also been established. Delineating the pathophysiological basis of miRNA dysregulation will further our understanding of the pathogenesis of these two potentially fatal diseases. Such efforts will also result in the development of miRNA-based biomarkers and therapeutics for the risk stratification, diagnosis, prognostication, and treatment of gastrointestinal cancers.
Apoptosis
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Biomarkers
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Cell Proliferation
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Colorectal Neoplasms
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Early Diagnosis
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Gastrointestinal Neoplasms
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MicroRNAs
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Neoplasm Metastasis
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Phenotype
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Prognosis
;
Proto-Oncogenes
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RNA, Untranslated
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Stomach Neoplasms
6.Artificial intelligence in gastroenterology: where are we heading?
Joseph Jy SUNG ; Nicholas Ch POON
Frontiers of Medicine 2020;14(4):511-517
Artificial intelligence (AI) is coming to medicine in a big wave. From making diagnosis in various medical conditions, following the latest advancements in scientific literature, suggesting appropriate therapies, to predicting prognosis and outcome of diseases and conditions, AI is offering unprecedented possibilities to improve care for patients. Gastroenterology is a field that AI can make a significant impact. This is partly because the diagnosis of gastrointestinal conditions relies a lot on image-based investigations and procedures (endoscopy and radiology). AI-assisted image analysis can make accurate assessment and provide more information than conventional analysis. AI integration of genomic, epigenetic, and metagenomic data may offer new classifications of gastrointestinal cancers and suggest optimal personalized treatments. In managing relapsing and remitting diseases such as inflammatory bowel disease, irritable bowel syndrome, and peptic ulcer bleeding, convoluted neural network may formulate models to predict disease outcome, enhancing treatment efficacy. AI and surgical robots can also assist surgeons in conducting gastrointestinal operations. While the advancement and new opportunities are exciting, the responsibility and liability issues of AI-assisted diagnosis and management need much deliberations.
7.p53 Gene Mutations in Transitional Cell Carcinoma of the Renal Pelvis.
Sung Yong UHM ; Gu KONG ; Hae Young PARK
Korean Journal of Urology 1997;38(4):368-377
Inactivation or loss of suppressor genes on a specific chromosome plays an important role in the development and progression of cancer. Recent studies have shown that p53 gene acts as a tumor suppressor gene and that its mutation appears to be related to the aggressiveness of transitional cell carcinoma of the bladder. To investigate the significance of p53 gene mutations in transitional cell carcinoma of the renal pelvis (renal pelvis tumor), 28 tumors with various stages and grades were examined for p53 gene mutations in exon regions 5 to 8 using polymerase chain reaction single-strand conformation polymorphism analysis. Seven (25%) of 28 pelvis tumors were found to have p53 gene mutations. Three of 12 superficial tumors including pTis, pTa, and pT1 were found to have p53 gene mutations. And only four of 16 invasive tumors with pT2, pT3, and pT4 were found to have p53 mutations. In the respect of tumor grade, p53 gene mutation was found in four of the 14 tumors with grade I and II, while three of 14 tumors with grade III, and IV were found to have p53 gene mutations. These observations suggest that, in contrast to bladder cancer, the incidence of p53 gene mutations does not related to the tumor stages and grades in transitional cell carcinoma of the renal pelvis. These results further indicate that p53 gene mutation may not represent a genetic marker of malignant potentials in transitional cell carcinoma of the renal pelvis.
Carcinoma, Transitional Cell*
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Exons
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Genes, p53*
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Genes, Suppressor
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Genes, Tumor Suppressor
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Genetic Markers
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Incidence
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Kidney Pelvis*
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Pelvis
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Polymerase Chain Reaction
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Urinary Bladder
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Urinary Bladder Neoplasms
8.A Case of Acute Pancreatitis as a Complication of Systemic Lupus Erythematosus.
Jae Sung CHUNG ; Jin Min KONG ; Sun Hee YUN
Korean Journal of Nephrology 1999;18(4):652-655
Systemic lupus erythematosus, an autoimmune disease with multisystem involvement, has been reported to be associated with a number of gastrointestinal complications and symptoms such as nausea, vomiting, and abdominal pain. However, acute pancreatitis only rarely has been reported as a complication of SLE. We report a case of SLE presenting drug unrelated acute pancreatitis as a initial manifestation.
Abdominal Pain
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Autoimmune Diseases
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Lupus Erythematosus, Systemic*
;
Nausea
;
Pancreatitis*
;
Vomiting
9.Immunoblot observation of antigenic protein fractions in Paragonimus westermani reacting with human patients sera.
Sung Hwan KIM ; Yoon KONG ; Suk Il KIM ; Shin Yong KANG ; Seung Yull CHO
The Korean Journal of Parasitology 1988;26(4):239-243
: In order to observe the antigenic fractions in saline extract of adult Paragonimus westermani, proteins in the crude extract were separated by sodium dodecyl sulfate-polyacylamide gel electrophoresis (SDS-PAGE) in reducing conditions. The separated protein fractions were transferred to nitrocellulose paper on which 20 sera from human paragonimiasis were reacted and immunoblotted. Out of 15 stained protein bands in SDS-PAGE, 7 reacted with the sera. Of 14 reacted bands, 30 kilodalton(kDa) band was the most frequently reacted (95%) and was a strong antigen. Protein bands of 23 and 46 kDa were also strong antigens. Bands of over 150 kDa, 120 kDa, 92 kDa, 86 kDa, 74 kDa, 62 kDa, 51 kDa, 32 kDa, 28 kDa, 16.5 kDa and 15.5 kDa were also reactive but their frequencies of the reaction were variable.
parasitology-helminth-trematoda
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Paragonimus westermani
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immunology
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antigen
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electrophoresis
10.Steroid Withdrawal(SW) with Simultaneous Administration of Mycophenolate Mofetil(MMF) in Renal Recipients.
Dong Lyul LEE ; Jae Sung JUNG ; Jin Min KONG
Korean Journal of Nephrology 2000;19(1):132-137
Long term use of steroid induces multiple side effects and morbidity. However, SW has been reported to be associated with increased incidence of acute and chronic rejection, and subsequently reduced graft outcome. MMF inhibits the proliferation and functions of lymphocytes, decreases the incidence of acute rejection in organ transplants, and therefore may decrease the graft rejection associated with SW. We tried to withdraw steroid from 21 renal transplants treated with prednisolone and cyclosporine, who had clinically significant steroid induced side effects. Reasons for SW were diabetes in 15 patients (pre-transplant DM 4 and post-transplant 11), moon face 4 and avascular necrosis of femur 2. Prednisolone was tapered at a rate of 2.5mg every 2 weeks and was discontinued. MMF, 1.0-2.0g/day, was initiated at the beginning of SW. The time interval between transplantation and SW was 26+/-5 (1.5-67) months. Mean age was 48(28-61). Two patients developed MMF-induced GI side effects, and were returned to previous immuno- suppressants. In 1 patient, serum creatinine increased during SW, and steroid was re-administered with the restoration of renal function. In 18(86%) of 21 patients, therefore, steroid was successfully with-drawn. At the follow up of 17+/-1(13-24) months after SW, 1 patient with drug incompliance developed chronic rejection. The rest showed stable renal function. Steroid can be safely withdrawn from renal transplants by simultaneous administration of MMF. The long-term safety, however, needs to be evaluated by prolonged follow up studies.
Creatinine
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Cyclosporine
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Femur
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Follow-Up Studies
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Graft Rejection
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Humans
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Incidence
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Kidney Transplantation
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Lymphocytes
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Necrosis
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Prednisolone
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Transplants