Therapeutic Effect of Allogenic Bone Marrow Transplantation in Acute TNBS-induced Colitis / 대한소화기학회지

BACKGROUND/AIMS: Bone marrow-derived cells (BMDC) contribute to tissue maintenance under many kinds of pathologic conditions. We carried out a study to see how BMDC play a role in the treatment of experimental murine colitis. METHODS: We divided the animals into 3 groups and treated them with 50% ethanol (control group), 2,4,6-trinitrobenzene sulfinic acid colitis (TNBS group), and TNBS+bone marrow transplant (BMT group). To induce colitis, TNBS (5.0 mg/mouse) dissolved in 50% ethanol was injected into anus weekly for two weeks. Bone marrow transplantations were performed using bone marrow of male transgenic mouse (donor) with green fluoresence protein (GFP) into female wild type mouse (recipient) three weeks before TNBS instillation. All animals were sacrificed, and colons were extracted one week after the last TNBS instillation. We measured microscopic scores of mucosal injury and investigated the GFP expression for bone marrow engraftment. The immunostaining of vimentin and alpha-smooth muscle actin (alpha-SMA) for myofibroblasts was performed. RESULTS: The score of mucosal injury in the TNBS group was much more severe than those in control, and reduced significantly by BMT (p<0.05). GFP-positive cells were almost deposited in pericryptal niche of BMT group but not at all in both control and TNBS group. Most of myofibroblasts stained with both vimentin and SMA also infiltrated into pericryptal niche. But, the number of myofibroblasts stained with vimentin and SMA in both control and TNBS group was smaller than that in BMT group. CONCLUSIONS: BMDC deposited on pericryptal niche might have a significant role in repairing acute experimental murine colitis.

A Case of Double Primary Cancer in the Esophagus / 대한소화기내시경학회지

Double primary cancer is usually accompanied by gastrointestinal cancer. The incidence of histologically different cancers in the same organ is less than that of double cancers arising from different organs. The cancers accompanied by esophageal squamous cell carcinoma are laryngopharyngeal cancer, gastric adenocarcinoma and primary hepatocarcinoma. Esophageal cancer is supposed to be frequently accompanied by squamous cell carcinoma of the head and neck or the upper respiratory tract because of such common carcinogens as smoking and alcohol ingestion. On the other hand, it is vary rare that a synchronous double primary cancer is diagnosed at the esophagus. We present here a case of double esophageal cancer in a 77 year-old patient who visited our hospital because of progressive dysphagia that she'd experienced for 3 weeks.

Three Cases of Double Primary Cancer in the Esophagus and Stomach / 대한소화기내시경학회지

Double primary cancer means that more than 2 cancers occur independently in an individual. There have been many reports on double primary cancer since Billroth reported it for the first time in 1889 and Warren and Gates established it. The incidence of esophageal cancer is low, about 1~2% of all cancer and, 7% of all gastrointestinal cancer, but double cancer with including esophageal cancer is 9.5~27% of all double primary cancer. Double primary cancer of the esophagus and stomach has occasionally been reported. We have experienced three cases of double primary cancer of squamous carcinoma in the esophagus and adenocarcinoma in the stomach. In this study we reviewed the clinical characteristics of the reported cases of double primary esophageal and gastric cancer that have been reported in Korea and these three cases we experienced at our hospital.

A Case of Malignant Duodenocolic Fistula / 대한소화기내시경학회지

Malignant duodenocolic fistula is a rare complication of colon cancer, and this usually develops as the right-side colon cancer or colonic hepatic flexure cancer infiltrates into the second portion of the duodenum. Six Korean cases of this malignancy have been previously reported on. The patients usually complain of watery diarrhea, feculant vomiting and weight loss that can be attributed to the altered normal flora. Barium enema has been the diagnostic procedure of choice to demonstrate the fistulous tract, but with the technical development of gastroendoscopy, the primary procedure is also changing. Curative resection is not possible in many cases. Palliative ileotransverse colostomy with gastrodjejunostomy is performed to relieve symptoms, but it cannot completely prevent the vomiting or diarrhea. We herein present a case of malignant duodenocolic fistula in a patient who had been suffering from indigestion, loose stool and feculant vomiting for one year. This case was diagnosed by endoscopy and the patient underwent a palliative operation.

A case of myocardial infarction with antiphospholipid syndrome / 대한내과학회지

Antiphospholipid syndrome is a multi-system disorder characterized by arterial or venous thromboses and antiphospholipid antibodies, such as lupus anticoagulant or anticardiolipin antibodies. Most common clinical manifestations are recurrent pregnancy losses and deep vein thromboses. Cardiac manifestations in antiphospholipid syndrome include valve abnormalities, occlusive arterial disease, intracardiac emboli, and ventricular dysfunction. Acute myocardial infarction is a rare manifestation of the primary antiphospholipid syndrome. We have experienced a case of myocardial infarction with antiphospholipid syndrome. A 35-year-old man with no cardiovascular risk factors, other than smoking, presented with chest pain. He was diagnosed with an acute myocardial infarction. Our evaluation for coagulapathy revealed elevated lupus anticoagulant antibody. The antiphospholipid syndrome should be considered early in the differential diagnosis as an important cause of unexplained thrombosis in young patients.

A Case of Tubular Colonic Duplication / 대한소화기내시경학회지

Colonic duplication is a rare congenital anomaly. Generally, two-thirds of cases manifest before the age of 2 years and only a few cases are encountered in adults. The pathogenesis has not yet been confirmed. Morphologically, the condition is divided into two types, cystic and tubular. Treatment is reserved for symptomatic or complicated cases, and surgical resection is the treatment of choice. Prognosis is generally favorable. We report a case of colonic duplicaton in 59-year-old woman.

A Case of Adult-onset Still's Disease associated with Congestive Heart Failure / 대한류마티스학회지

Adult onset Still's disease (AOSD) is a multi-systemic inflammatory disorder characterized by several distinguished manifestations including high spiking fever, evanescent salmon-colored skin rash, arthralgia/arthritis, hepato-splenomegaly, lymphadenopathy, sore throat, serositis, and leukocytosis. The frequently noticed cardiopulmonary manifestation is pleuritis, pneumonitis, and pericarditis. Diffuse myocardial dysfunction is uncommon in AOSD, but it may be the cause of life-threatening heart failure. We have experienced a case of AOSD with acute heart failure in 20-year-old female complained of high fever and skin rash. On echocardiogram, the wall motion of left ventricle was globally decreased with a marked diminished ejection fraction (<25%). Two weeks after treatment with high dose steroid and intravenous immunoglobulin, her symptoms and cardiac function on echocardiogram was completely resolved. To our knowledge, this is the first case of AOSD with acute heart failure reported in Korea.

Effect and Mechanism of Arginine-rich Anti-vascular Endothelial Growth Factor Hexapeptide, RRKRRR, on the Regulation of Rheumatoid Inflammation / 대한류마티스학회지

OBJECTIVE: Vascular endothelial growth factor (VEGF) has been suggested to play a critical role in the pathogenesis of rheumatoid arthritis (RA). It has been demonstrated that synthetic arginine-rich hexapeptide, RRKRRR, shows significant inhibition of VEGF-induced angiogenesis, and also retarded the growth and metastasis of colon carcinoma cell by blocking the interaction between VEGF and its receptor. In this study, we investigated whether anti-VEGF RRKRRR peptide (dRK6) could regulate the activation of mononuclear cells of RA patients and suppress collagen-induced arthritis (CIA) in mice. METHODS: Synovial fluid mononuclear cells (SFMC) or synoviocytes from RA patients were cultured in the presence of VEGF, and the levels of TNF-alpha and IL-6 were determined in the culture supernatants by ELISA. Blocking experiments were performed by adding dRK6 to thecells stimulated with VEGF. Additionally, the in vivo effect of dRK6 on the development of arthritis was tested in collagen induced arthritis (CIA) in DBA/1 mice. T cell responses to type II collagen (CII) and IgG antibodies to CII were examined in draining lymph node cells and sera of the mice, respectively. RESUTLS: dRK6 showed concentration-dependent inhibitory activity for the VEGF binding to its receptor on human vascular endothelial cells. The treatment of dRK6 completely abrogated the VEGF-induced productions of TNF-alpha and IL-6 by RA SFMC or synoviocytes. Moreover, a subcutaneous injection of dRK6 resulted in a dose-dependent decrease in the severity and incidence of CIA in mice. In these mice, the T cell responses to type II collagen (CII) in lymph node cells and circulating IgG antibodies to CII were also dose-dependently inhibited by the peptides. CONCLUSION: We observed firstly that anti-VEGF dRK6 blocked the VEGF-induced production of pro-inflammatory cytokine from RA SFMC and synoviocytes, and suppressed the ongoing paw inflammation in mice. These data suggest that dRK6 may be an effective strategy in the treatment of RA, and could be applied to modulate various chronic VEGF-dependent inflammatory diseases.