1.Sudden Death Associated with Anomalous Left Coronary Artery Origin from Right Sinus of Valsalva with Posterior Course.
Korean Circulation Journal 2000;30(12):1578-1582
The left coronary artery from the right sinus of Valsalva represents an incidence of 0.017% of angiographic series and 1.3% of total coronary anomalies of angiographic series. The anomalous left coronary artery arising from the right sinus of Valsalva may take either a septal, anterior, interarterial or posterior course. Sudden death is thought to result from transient occlusion of anomalous left coronary artery, particulary when the anomalous artery passes between the aorta and the pulmonary trunk. The left coronary artery from the right sinus of Valsalva with posterior course are thought to be benign anomalies, although rarely myocardial ischemia may occur. A 69-year old woman died suddenly at rest. Coronary angiography revealed that anomalous left coronary artery origin from right sinus of Valsalva without any significant stenotic lesion, the anomalous left coronary artery passed posterior to the aorta. We report the patient with anomalous origined left coronary artery and its course posterior to aorta associated with the sudden death.
Aged
;
Aorta
;
Arteries
;
Coronary Angiography
;
Coronary Vessels*
;
Death, Sudden*
;
Female
;
Humans
;
Incidence
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Myocardial Ischemia
;
Sinus of Valsalva*
2.Ixodid Tick Infestation in Cattle and Wild Animals in Maswa and Iringa, Tanzania.
You Shine KWAK ; Tae Yun KIM ; Sung Hyun NAM ; In Yong LEE ; Hyung Pyo KIM ; Simon MDUMA ; Julius KEYYU ; Robert FYUMAGWA ; Tai Soon YONG
The Korean Journal of Parasitology 2014;52(5):565-568
Ticks and tick-borne diseases are important in human and livestock health worldwide. In November 2012, ixodid ticks were collected and identified morphologically from cattle and wild animals in the Maswa district and Iringa urban, Tanzania. Amblyomma gemma, A. lepidum, and A. variegatum were identified from Maswa cattle, and A. variegatum was the predominant species. A. marmoreum, Hyalomma impeltatum, and Rhipicephalus pulchellus were identified from Iringa cattle in addition to the above 3 Amblyomma species, and A. gemma was the most abundant species. Total 4 Amblyomma and 6 Rhipicephalus species were identified from wild animals of the 2 areas. A. lepidum was predominant in Maswa buffaloes, whereas A. gemma was predominant in Iringa buffaloes. Overall, A. variegatum in cattle was predominant in the Maswa district and A. gemma was predominant in Iringa, Tanzania.
Animals
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Animals, Wild
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Cattle
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Cattle Diseases/epidemiology/*parasitology
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*Ixodidae
;
Tanzania/epidemiology
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Tick Infestations/epidemiology/*veterinary
3.A Case of Cardiac Tamponade due to Primary Hypothyroidism.
Geon Young KIM ; Young Seung KIM ; Seung Cheol LEE ; Young Koung LEE ; Yun Pyo YOU ; Hyun Soo YOON ; Sun Chang PARK ; Kyung Tae JUNG
Journal of the Korean Society of Echocardiography 1999;7(2):196-201
Pericardial effusions occur in approximately 30% of patients with untreated hypothyroidism. The effusions are more common in patients with longstanding, severe disease. But, cardiac tamponade is a very rare complication, because of the elasticity of pericardium and slow progression. We experienced a 61 year old female patient with cardiac tamponade due to primary hypothyroidism. She was treated with pericardiocentensis and thyroid hormone replacement, confirmed by echocardiography,thyroid function test and TRH stimulation test.
Cardiac Tamponade*
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Elasticity
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Female
;
Humans
;
Hypothyroidism*
;
Middle Aged
;
Pericardial Effusion
;
Pericardium
;
Thyroid Gland
4.Multicentric Biatrial Myxoma in a Young Female Patient.
Sang Jeong YOON ; Soon Chang PARK ; Yun Pyo YOU ; Bum Yong KIM ; Myong Kon KIM ; Kyung Tae JEONG ; Jae Won LEE
The Korean Journal of Internal Medicine 2000;15(3):236-239
We report a case of multicentric, biatrial cardiac myxoma in a 29-year-old female who complained of exertional dyspnea, abdominal distension and peripheral edema. Any other associated skin lesions, breast mass or endocrine disorder presenting complex form were not seen on her. Also, there was no contributory medical history, hypertension and diabetes mellitus. By using transthoracic echocardiography, we identified a biatrial myxoma attached to the interatrial septum. During surgical excision, we found a large right atrial myxoma with extension through the fossa ovalis into the left atrium and small myxoma attached to the right atrial free wall. After successful resection of interatrial septum and free wall, atrial septal defect was created during the resection and safely repaired by bovine pericardial patch.
Adult
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Case Report
;
Echocardiography
;
Female
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Heart Neoplasms/surgery*
;
Heart Neoplasms/pathology
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Heart Neoplasms/diagnosis
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Human
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Myxoma/surgery*
;
Myxoma/pathology
;
Myxoma/diagnosis
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Neoplasm Recurrence, Local
5.Randomized, Double-blind, Placebo-controlled Clinical Trial for the Evaluation of the Efficacy and Safety of Artemisia and Green Tea Extract SD1003F in Volunteers with Helicobacter pylori-associated Gastric Discomfort
Sang Oh KWON ; Dong Yun KWAK ; Sung Pyo HONG ; Won Hee KIM ; Jong Min PARK ; Young Min HAN ; You KANG ; Eun A KANG ; Seohyun JO ; Ki Baik HAHM
The Korean Journal of Helicobacter and Upper Gastrointestinal Research 2018;18(1):38-49
BACKGROUND/AIMS: A previous study showed that dietary intervention with Artemisia and green tea extracts, i.e., SD1003F, relieved Helicobacter pylori-associated chronic atrophic gastritis in a mouse model. We continue the research through the current randomized double-blind clinical trial to evaluate the efficacy and safety of the intervention for H. pylori-associated gastric discomfort. MATERIALS AND METHODS: Forty-nine volunteers who tested positive for H. pylori infection received either placebo or SD1003F for 10 weeks and their functional dyspepsia-related quality of life (QOL) was evaluated. H. pylori infection using a urea breath test (UBT), measurement of pepsinogen level using GastroPanel. Adverse effects with biochemical changes were also evaluated. RESULTS: SD1003F administration significantly improved health related-QOL, including dietary intake, emotional stability, life pattern, and social factors relevant to gastric discomfort, in comparison to the control (P < 0.05). The mean UBT measurement significantly decreased in the SD1003F group (P < 0.05). In 2 of the 24 volunteers, SD1003F alone eradicated H. pylori infection, with significant improvements in endoscopic findings. GastroPanel analysis revealed significant improvements that reflect rejuvenation of gastric atrophy in the SD1003F group. No significant side effect was observed in any participant. CONCLUSIONS: SD1003F (Artemisia and green tea extract), is a potential phytochemical to improve H. pylori-associated gastric discomfort.
Animals
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Artemisia
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Atrophy
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Breath Tests
;
Gastritis, Atrophic
;
Helicobacter pylori
;
Helicobacter
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Mice
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Pepsinogen A
;
Quality of Life
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Rejuvenation
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Tea
;
Urea
;
Volunteers
6.Regorafenib as Salvage Treatment in Korean Patients with Refractory Metastatic Colorectal Cancer.
Seung Tae KIM ; Tae Won KIM ; Kyu Pyo KIM ; Tae You KIM ; Sae Won HAN ; Ji Yun LEE ; Sung Hee LIM ; Min Young LEE ; Haesu KIM ; Young Suk PARK
Cancer Research and Treatment 2015;47(4):790-795
PURPOSE: Regorafenib, an oral multi-targeted tyrosine kinase inhibitor, is considered the new standard of care in patients with chemotherapy-refractory colorectal cancers (CRCs). However, there are no data on this drug in Korean patients. MATERIALS AND METHODS: We evaluated patients who received oral regorafenib 160 mg once daily during the first 3 weeks of each 4-week cycle between August 2013 and September 2013. All patients had previously progressed fluorouracil, irinotecan, and oxaliplatin with or without biologic agents such as cetuximab or bevacizumab. RESULTS: Thirty-two patients were enrolled (median age, 57 years; male:female ratio, 20:12; Eastern Cooperative Oncology Group performance status [0-1:2], 31:1; colon:rectum, 21:11). The overall response rate was 3.1% and the disease control rate was 50.0% (95% confidence interval [CI]) with one partial response and 15 patients with stable disease. The median progression-free survival was 4.2 months (95% CI, 3.1 to 5.2 months) and the median overall survival has not yet been reached. The most common adverse events of grade two or higher related to regorafenib were hand-foot skin reaction (25%), mucositis (19%), abdominal pain (9%), and liver function test (LFT) abnormalities (9%). Grade 3 or 4 toxicities included LFT abnormalities (9%), abdominal pain (9%), rash (6%), anemia (3%), leukopenia (3%), neutropenic fever (3%), and fatigue (3%). There was no treatment-related death. CONCLUSION: Regorafenib appears to have promising activity and tolerable toxicity profiles in Korean patients with refractory CRC, consistent with the CORRECT trial findings.
Abdominal Pain
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Anemia
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Biological Factors
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Colorectal Neoplasms*
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Disease-Free Survival
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Exanthema
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Fatigue
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Fever
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Fluorouracil
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Humans
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Korea
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Leukopenia
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Liver Function Tests
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Mucositis
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Protein-Tyrosine Kinases
;
Skin
;
Standard of Care
7.The microbiome of the lung and its extracellular vesicles in nonsmokers, healthy smokers and COPD patients.
Hyun Jung KIM ; You Sun KIM ; Kang Hyun KIM ; Jun Pyo CHOI ; Yoon Keun KIM ; Sunmi YUN ; Lokesh SHARMA ; Charles S DELA CRUZ ; Jae Seung LEE ; Yeon Mok OH ; Sang Do LEE ; Sei Won LEE
Experimental & Molecular Medicine 2017;49(4):e316-
Chronic obstructive pulmonary disease (COPD) is a chronic inflammatory disease, and bacterial infection plays a role in its pathogenesis. Bacteria secrete nanometer-sized extracellular vesicles (EVs), which may induce more immune dysfunction and inflammation than the bacteria themselves. We hypothesized that the microbiome of lung EVs might have distinct characteristics depending on the presence of COPD and smoking status. We analyzed and compared the microbiomes of 13 nonsmokers with normal spirometry, 13 smokers with normal spirometry (healthy smokers) and 13 patients with COPD by using 16S ribosomal RNA gene sequencing of surgical lung tissue and lung EVs. Subjects were matched for age and sex in all groups and for smoking levels in the COPD and healthy smoker groups. Each group included 12 men and 1 woman with the same mean age of 65.5 years. In all groups, EVs consistently showed more operational taxonomic units (OTUs) than lung tissue. In the healthy smoker and COPD groups, EVs had a higher Shannon index and a lower Simpson index than lung tissue and this trend was more prominent in the COPD group. Principal component analysis (PCA) showed clusters based on sample type rather than participants' clinical characteristics. Stenotrophomonas, Propionibacterium and Alicyclobacillus were the most commonly found genera. Firmicutes were highly present in the EVs of the COPD group compared with other samples or groups. Our analysis of the lung microbiome revealed that the bacterial communities present in the EVs and in the COPD group possessed distinct characteristics with differences in the OTUs, diversity indexes and PCA clustering.
Alicyclobacillus
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Bacteria
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Bacterial Infections
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Extracellular Vesicles*
;
Female
;
Firmicutes
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Humans
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Inflammation
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Lung*
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Male
;
Microbiota*
;
Passive Cutaneous Anaphylaxis
;
Principal Component Analysis
;
Propionibacterium
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Pulmonary Disease, Chronic Obstructive*
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RNA, Ribosomal, 16S
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Smoke
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Smoking
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Spirometry
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Stenotrophomonas
8.Primary Tumor Suppression and Systemic Immune Activation of Macrophages through the Sting Pathway in Metastatic Skin Tumor
Chun-Bong SYNN ; Dong Kwon KIM ; Jae Hwan KIM ; Youngseon BYEON ; Young Seob KIM ; Mi Ran YUN ; Ji Min LEE ; Wongeun LEE ; Eun Ji LEE ; Seul LEE ; You-Won LEE ; Doo Jae LEE ; Hyun-Woo KIM ; Chang Gon KIM ; Min Hee HONG ; June Dong PARK ; Sun Min LIM ; Kyoung-Ho PYO
Yonsei Medical Journal 2022;63(1):42-55
Purpose:
Agonists of the stimulator of interferon genes (STING) play a key role in activating the STING pathway by promoting the production of cytokines. In this study, we investigated the antitumor effects and activation of the systemic immune response of treatment with DMXAA (5,6-dimethylxanthenone-4-acetic acid), a STING agonist, in EML4-ALK lung cancer and CT26 colon cancer.
Materials and Methods:
The abscopal effects of DMXAA in the treatment of metastatic skin nodules were assessed. EML4-ALK lung cancer and CT26 colon cancer models were used to evaluate these effects after DMXAA treatment. To evaluate the expression of macrophages and T cells, we sacrificed the tumor-bearing mice after DMXAA treatment and obtained the formalin-fixed paraffin-embedded (FFPE) tissue and tumor cells. Immunohistochemistry and flow cytometry were performed to analyze the expression of each FFPE and tumor cell.
Results:
We observed that highly infiltrating immune cells downstream of the STING pathway had increased levels of chemokines after DMXAA treatment. In addition, the levels of CD80 and CD86 in antigen-presenting cells were significantly increased after STING activation. Furthermore, innate immune activation altered the systemic T cell-mediated immune responses, induced proliferation of macrophages, inhibited tumor growth, and increased numbers of cytotoxic memory T cells. Tumor-specific lymphocytes also increased in number after treatment with DMXAA.
Conclusion
The abscopal effect of DMXAA treatment on the skin strongly reduced the spread of EML4-ALK lung cancer and CT26 colon cancer through the STING pathway and induced the presentation of antigens.
9.Long-term Oncologic Outcome of Postoperative Complications After Colorectal Cancer Surgery
Chang Kyu OH ; Jung Wook HUH ; You Jin LEE ; Moon Suk CHOI ; Dae Hee PYO ; Sung Chul LEE ; Seong Mun PARK ; Jung Kyong SHIN ; Yoon Ah PARK ; Yong Beom CHO ; Seong Hyeon YUN ; Hee Cheol KIM ; Woo Yong LEE
Annals of Coloproctology 2020;36(4):273-280
Purpose:
The impact of postoperative complications on long-term oncologic outcome after radical colorectal cancer surgery is controversial. The aim of this study was to examine the risk factors and oncologic outcomes of surgery-related postoperative complication groups.
Methods:
From January 2010 to December 2010, 310 patients experienced surgery-related postoperative complications after radical colorectal cancer surgery. These stage I–III patients were classified into 2 subgroups, minor (grades I, II) and major (grades III, IV) complication groups, according to extended Clavien-Dindo classification system criteria. Clinicopathologic differences between the 2 groups were analyzed to identify risk factors for major complications. The diseasefree survival rates of surgery-related postoperative complication groups were also compared.
Results:
Minor and major complication groups were stratified with 194 patients (62.6%) and 116 patients (37.4%), respectively. The risk factors influencing the major complication group were pathologic N category and operative method. The prognostic factors associated with disease-free survival were preoperative perforation, perineural invasion, tumor budding, and receiving neoadjuvant therapy. With a median follow-up period of 72.2 months, the 5-year disease-free survival rates were 84.4% in the minor group and 78.5% in the major group, but there was no statistical significance between the minor and major groups (P = 0.392).
Conclusion
Advanced cancer and open surgery were identified as risk factors for increased surgery-related major complications after radical colorectal cancer surgery. However, severity of postoperative complications did not affect disease-free survival from colorectal cancer.
10.Antioxidant and hepatoprotective effects of Korean ginseng extract GS-KG9 in a D-galactosamine-induced liver damage animal model
Yun Ho JO ; Hwan LEE ; Myeong Hwan OH ; Gyeong Hee LEE ; You Jin LEE ; Ji Sun LEE ; Min Jung KIM ; Won Yong KIM ; Jin Seong KIM ; Dae Seok YOO ; Sang Won CHO ; Seon Woo CHA ; Mi Kyung PYO
Nutrition Research and Practice 2020;14(4):334-351
BACKGROUND/OBJECTIVES:
This study was designed to investigate the improvement effect of white ginseng extract (GS-KG9) on D-galactosamine (Ga1N)-induced oxidative stress and liver injury.
SUBJECTS/METHODS:
Sixty Sprague-Dawley rats were divided into 6 groups. Rats were orally administrated with GS-KG9 (300, 500, or 700 mg/kg) or silymarin (25 mg/kg) for 2 weeks. The rats of the GS-KG9- and silymarin-treated groups and a control group were then intraperitoneally injected Ga1N at a concentration of 650 mg/kg for 4 days. To investigate the protective effect of GS-KG9 against GalN-induced liver injury, blood liver function indicators, anti-oxidative stress indicators, and histopathological features were analyzed.
RESULTS:
Serum biochemical analysis indicated that GS-KG9 ameliorated the elevation of aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), and lactate dehydrogenase (LDH) in GalN-treated rats. The hepatoprotective effects of GS-KG9 involved enhancing components of the hepatic antioxidant defense system, including glutathione, glutathione peroxidase (GPx), superoxide dismutase (SOD), and catalase (CAT). In addition, GS-KG9 treatment inhibited reactive oxygen species (ROS) production induced by GalN treatment in hepatocytes and significantly increased the expression levels of nuclear factor erythroid-2-related factor 2 (Nrf2) and heme oxygenase-1 (HO-1) proteins, which are antioxidant proteins. In particular, by histological analyses bases on hematoxylin and eosin, Masson's trichrome, α-smooth muscle actin, and transforming growth factor-β1 staining, we determined that the administration of 500 mg/kg GS-KG9 inhibited hepatic inflammation and fibrosis due to the excessive accumulation of collagen.
CONCLUSIONS
These findings demonstrate that GS-KG9 improves GalN-induced liver inflammation, necrosis, and fibrosis by attenuating oxidative stress. Therefore, GS-KG9 may be considered a useful candidate in the development of a natural preventive agent against liver injury.