1.A study on the lipids of Chinese liverfluke, Clonorchis sinensis.
Soon Hyung LEE ; Chul Yong SONG ; Byong Ha CHO
The Korean Journal of Parasitology 1977;15(2):109-114
The present study was undertaken to observe the quality and quantity of lipids in the adult worms of Chinese liverfluke, Clonorchis sinensis. Lipid extraction was done by the methods of Folch et a1. (l957) and Kenny (1952), and then the extracted lipid fractions of the worm were separated by thin layer chromatography. Those fractions were also subjected to perform the quantitative analyses of glycerides, cholesterols and phospholipids. The results obtained were summarized as follows: Total amount of glyceride was 37.56 mg per gram of worm tissue and the amount of monoglyceride was 8.34 mg per gm; diglyceride, 15.46 mg per gm; and triglyceride, 12.86 mg per gm. Total amount of cholesterol was 3.30 mg per gm of worm tissue, and the esterified cholesterol (1.72 mg/gm) was a little more than that of free cholesterol (1.26 mg/gm). The following 8 phospholipids were detected in the worm tissue of C. sinensis, i.e., lysophosphatidylcholine, phosphatidylcholine, phophatidylinositol, sphingomyelin, phosphatidylglycerol, phosphatidylserine, phosphatidylethanolamine and an unknown phospholipid.
parasitology-helminth-trematoda
;
Clonorchis sinensis
;
biochemistry
;
glyceride
;
cholesterol
;
phospholipid
;
lipid
;
lysophosphatidylcholine
;
phosphatidylcholine
;
phophatidylinositol
;
sphingomyelin
;
phosphatidylglycerol
;
phosphatidylserine
;
phosphatidylethanolamine
2.Nonobstetric Surgery during Pregnancy.
Chul Woon CHUNG ; Jae Gil LEE ; Kyung Sik KIM ; In Chul HONG ; Chang Hwan CHO ; Byong Ro KIM
Journal of the Korean Surgical Society 1999;57(1):125-130
BACKGROUND: Nonobstertic surgery during pregnancy needs special considerations by the surgeon in relation to the maternal and the fetal outcomes. Although there are many studies about appendicitis in pregnant women, nonobstetric surgery, in general, during pregnancy has not been sufficiently analyzed. In this clinical study, we reviewed the incidences of nonobstetric surgical diseases during pregnancy and observed the maternal and the fetal outcomes of surgery, including the effects of anesthesia and antibiotics. METHODS: We retrospectively analyzed 80 patients who were pregnant at the time of operation and who had undergone operations during an 11-year period from March 1986 to April 1997 at Shinchon- and Inchon-Severance Hospital. The distributions of age, disease, and delivery history were analyzed, and the diagnostic characteristics, and the fetal and the maternal outcomes were observed with respect to anesthesia and antibiotic usage. RESULTS: The average age of the patients was 32, and 53% of the patients were over 30. The numbers of patients in the first, the second, and the third trimester were 24 (30%), 36 (45%) and 20 (25%), respectively. The most frequent surgical disease was appendicitis with 52 patients (65%). The average duration of hospitalization was 14.4 days. Twenty-two patients (27.5%) had postoperative preterm labor and were successfully managed with tocolytic agents except for one preterm delivery. The total number of preterm deliveries was 10 (12.5%), and still birth occurred in 3 cases (3.8%). The cases of still birth involved severe original diseases, such as rectal carcinomas, pancreatic carcinomas, and sepsis. Among the antibiotics that were used during surgical care, monotherapy with ampicillin was the most frequently used mode. The incidence frequencies of delivery complications according to the used antibiotics were not significantly different from each other. General endotracheal anesthesia was used in 40 cases, spinal and epidural anesthesia was inducted in 25 and 13 cases, respectively. The incidences of fetal complications according to the methods of was administering anesthesia were not significantly different. CONCLUSIONS: The maternal and the fetal risks of nonobstetric surgery during pregnancy depend on the risk of the original surgical disease of the patient. Modes of anesthesia or antibiotic usage do not increase the incidences of obstetric complications.
Ampicillin
;
Anesthesia
;
Anesthesia, Epidural
;
Anti-Bacterial Agents
;
Appendicitis
;
Female
;
Hospitalization
;
Humans
;
Incidence
;
Obstetric Labor, Premature
;
Parturition
;
Pregnancy Trimester, Third
;
Pregnancy*
;
Pregnant Women
;
Retrospective Studies
;
Sepsis
;
Tocolytic Agents
3.The prevalence of intestinal helminthes in inhabitants of Cheju Do.
Byong Seol SEO ; Han Jong RIM ; Seung Yull CHO ; Jong Ho AHN ; Jong Won KWAK ; Jung Woo LEE ; Se Chul KANG
The Korean Journal of Parasitology 1972;10(2):100-108
The authors examined 3,169 fecal specimens from inhabitants of seven localities such as City, Eups and Myons in Cheju Do on July 1970 with cellophane thick smear technique. The results were analysed and summarized as follows: The overall egg positive rate of helminths was 82.2% and it was attributed to high rates of soil-transmitted helminths as in case of other parts in Korea. The infection rates of each species were; A. lumbricoides 44.3%, T. trichiurus 65.6%, hookworm 1.5%, T. orientalis 0.8%, C. sinensis 0.2%, P. westermani 0.4%, M. yokogawai 0.9%, Taenia sp. 12.7% and H. nana 1.4%. The infection rates of soil-transmitted helminths were relatively lower than those of mainland Korea especially in case of hookworm and T. orientalis. The proportion of unfertilized ova passers among the Ascaris infected case was 22.1%. The ova of heterophyids, most probably Metagonimus yokogawai were detected in lower percentage but discovered throughout the localities surveyed and in all age groups. It is certainly presumed that Metagonimus infection is autochthonous. The most interesting results were obtained in Taenia sp. infection and the higher rates were shown in rural area than in urbanized areas. The positive rates were within 5% in childhood and adolescence but abruptly increased up to 36.4 % in adults.
parasitology-helminth-nematoda-trematoda-cestoda
;
Ascaris lumbricoides
;
Trichuris trichiura
;
hookworm
;
Trichostrongylus orientalis
;
Clonorchis sinensis
;
Paragonimus westermani
;
Metagonimus yokogawai
;
Taenia sp.
;
Hymenolepis nana
4.Dosimetry and Three Dimensional Planning for Stereotactic Radiosurgery with SIEMENS 6-MV LINAC.
Dong Rak CHOI ; Byong Chul CHO ; Tae Suk SUH ; Su Mi CHUNG ; Il Bong CHOI ; Kyung Sub SHINN
Journal of the Korean Society for Therapeutic Radiology 1993;11(1):175-183
Radiosurgery requires integral procedure where special devices and computer systems are needed for localization, dose planning and treatment. The aim of this work is to verify the overall mechanical accuracy of our LINAC and develop dose calculation algorithm for LINAC radiosurgery. The alignment of treatment machine and the performance testing of the entire system were extensively carried out and the basic data such as percent depth dose, off-axis ratio and output factor were measured. A three dimensional treatment planning system for stereotactic radiosurgery has been developed. We used an IBM personal computer with C programming language (IBM personal system/2, Model 80386, 1BM Co., USA) for calcu1ating the dose distribution. As a result, deviations at isocenter on gantry and table rotation for our treatment machine were acceptable since they were less than 2 mm. According to the phantom experiments, the focusing isocenter were successful by the error of less than 2 mm. Finally, the mechanical accuracy of our three dimensional planning system was confirmed by film dosimetry in sphere phantom.
Computer Systems
;
Film Dosimetry
;
Humans
;
Microcomputers
;
Programming Languages
;
Radiosurgery*
5.Factors Affecting Postoperative Recurrence of Chronic Subdural Hematoma.
Woo Keun KONG ; Byong Chul KIM ; Keun Tae CHO ; Seung Koan HONG
Korean Journal of Neurotrauma 2012;8(2):122-127
OBJECTIVE: Considerable recurrence rates have been reported for chronic subdural hematoma (CSDH) following surgical evacuation. The aim of this study was to determine the independent factors and features of CSDH that are associated with postoperative recurrence. METHODS: Retrospective analysis of 136 consecutive patients diagnosed with CSDH who were surgically treated from September 2005 to December 2011 was performed. The demographic data, clinical characteristics, radiologic features were analyzed to clarify the correlation between independent variables and postoperative recurrence of CSDH. RESULTS: CSDH was resolved within 1 month following surgery in 51 patients (37.5%), between 1 to 3 months in 59 patients (43.4%), and past 3 months in 14 patients (10.3%). A total of 12 patients (8.8%) experienced recurrence of CSDH, and reoperation was performed in all recurred cases. The average duration between initial surgery and reoperation was 20.1 days. Delayed resolution and recurrence were more commonly presented in bilateral CSDH, but this data was not statistically significant. Large hematomas with maximum thickness over 20 mm were significantly correlated with higher recurrence rates of CSDH (p=0.032). In addition, the incidence of recurrence was significantly higher in the cases with high-density and mixed-density hematomas according to brain computed tomography (CT) findings (p=0.0026). CONCLUSION: The thickness and density of the hematoma is significantly correlated with higher recurrence rates of CSDH. Discerning these risk factors could be beneficial in predicting the postoperative recurrence of CSDH.
Brain
;
Hematoma
;
Hematoma, Subdural, Chronic
;
Humans
;
Incidence
;
Recurrence
;
Reoperation
;
Retrospective Studies
;
Risk Factors
6.Comparative study of radiologic findings in reduced and nonreduced intussusception by barium enema.
So Hyun LEE ; Chan Sup PARK ; Soon Gu CHO ; Chul Soo OK ; Chang Hae SUH ; Mi Young KIM ; Won Kyun CHUNG ; Jung Soo SUH ; Eun Chul CHUNG ; Soon Ki KIM ; Byong Kwan SON
Journal of the Korean Radiological Society 1993;29(6):1325-1330
One hundred and eighty one cases, which comfirmed tobe intussusception, were reviewed retrospectively to identify the differences between radiologic findings of reduced and nonreduced intussusceptions by barium enema. The number of cases of reduced intussusception was 148 and nonreduced was 33, so the rate of reduction was 82%. On conventional radiographs, air-fluid levels were seen in 23 cases(15.5%) of the reduced intussusception and in 18 cases(54.6%) of the nonreduced intussusception, and soft tissue masses were seen in 20 cases(13.5%) of the reduced intussusception and in 2 cases(36.4%) of the nonreduced intussusception. The mean value of a ratio of maximal diameter of small bowel to interpedicular distance of L3vertebral body was 0.93 in the reduced intussusception and 1.25 in the nonreduced intussusception. On barium enema, the dissection sign was seen in 33.1% of the reduced intussusception and in 75.8% of the nonreduced intussusception. The morphologic abnormalities of ascending colon were seen in 11.5% of the reduced intussusception and in 38.7% of the nonreduced intussusception. So, the findings of the air-fluid level soft tissue mass, marked small bowel dilatation, dissection sign and morphologic abnormality of ascending colon were more frequently seen in the nonreduced intussusception than the reduced cases. There was no correlation between the location of intussusceptum and the reduction rate.
Barium*
;
Colon, Ascending
;
Dilatation
;
Enema*
;
Intussusception*
;
Retrospective Studies
7.A Case of Henoch - Shoenlein Purpura with Duodenal Involvement.
Byung Sup CHO ; Je Woong MOON ; Kyung Chul SHIN ; Ho Jung KIM ; Kyu Tae KIM ; Jae Gon AN ; Byong Chul LEE ; Ha Yung JUN ; In Whoan LEE ; Hak Jung KWON ; Hyang Ju LEE ; Suk Il JANG ; Dae Seob CHOI ; Jong Suk KIM
Korean Journal of Gastrointestinal Endoscopy 1996;16(4):639-643
Henoch-Shonlein(H-S) purpura, or anaphylactoid purpura is a hypersensitivity vasculitis characterized by palpable purpura usually on buttock and low extremities; arthralgia mostly polyarhtralgia in the absence of frank arthritis; gastraintestinal involvement with colicky abdominal pain, nausea, vomiting, diarrhea, constipation and bleeding; and renal involvement, manifested chiefly by hematuria and proteinuria. Gastrointestinal involvement is seen in 70 percent of pediatric patients and one third of adult patients. Any portion of the gastrointestinal tract distal to the esophagus maybe involved, but most frequently affected sites are jejunum and ileum. We report one case of H-S purpura with duodenal involvement observed in 16, male patient.
Abdominal Pain
;
Adult
;
Arthralgia
;
Arthritis
;
Buttocks
;
Constipation
;
Diarrhea
;
Esophagus
;
Extremities
;
Gastrointestinal Tract
;
Hematuria
;
Hemorrhage
;
Humans
;
Ileum
;
Jejunum
;
Male
;
Nausea
;
Proteinuria
;
Purpura*
;
Purpura, Schoenlein-Henoch
;
Vasculitis, Leukocytoclastic, Cutaneous
;
Vomiting
8.Superior Vena Cava Thrombosis Treated Successfully by Percutaneous Insertion of Metallic Stent in a Patient with Behcet's Disease.
Jae Hyuck CHANG ; Myoung Beom KOH ; Dong Il SHIN ; Seung Ki KWOK ; Byong Sik CHO ; Wan Uk KIM ; Chul Soo CHO ; Ho Youn KIM
The Journal of the Korean Rheumatism Association 2002;9(3):230-235
The venous thrombosis is the most common vascular event in Behcet's disease. Among the thrombotic complications of Behcet's disease, thrombosis in superior vena cava is rare, but once it happens, it may be life-threatening. In this report, we describe a case of 45-year-old female with Behcet's disease complicated by the superior vena cava thrombosis, which was treated successfully with the operation and then endovascular stenting. This case shows that endovascular stent may be one of good strategies for the management of vascular complication in Behcet's disease.
Female
;
Humans
;
Middle Aged
;
Stents*
;
Superior Vena Cava Syndrome*
;
Thrombosis
;
Vena Cava, Superior*
;
Venous Thrombosis
9.Pyrrole-Derivative of Chalcone, (E)-3-Phenyl-1-(2-Pyrrolyl)-2-Propenone, Inhibits Inflammatory Responses via Inhibition of Src, Syk, and TAK1 Kinase Activities.
Sungjae YANG ; Yong KIM ; Deok JEONG ; Jun Ho KIM ; Sunggyu KIM ; Young Jin SON ; Byong Chul YOO ; Eun Jeong JEONG ; Tae Woong KIM ; In Sook HAN LEE ; Jae Youl CHO
Biomolecules & Therapeutics 2016;24(6):595-603
(E)-3-Phenyl-1-(2-pyrrolyl)-2-propenone (PPP) is a pyrrole derivative of chalcone, in which the B-ring of chalcone linked to β-carbon is replaced by pyrrole group. While pyrrole has been studied for possible Src inhibition activity, chalcone, especially the substituents on the B-ring, has shown pharmaceutical, anti-inflammatory, and anti-oxidant properties via inhibition of NF-κB activity. Our study is aimed to investigate whether this novel synthetic compound retains or enhances the pharmaceutically beneficial activities from the both structures. For this purpose, inflammatory responses of lipopolysaccharide (LPS)-treated RAW264.7 cells were analyzed. Nitric oxide (NO) production, inducible NO synthase (iNOS) and tumor necrosis factor-α (TNF-α) mRNA expression, and the intracellular inflammatory signaling cascade were measured. Interestingly, PPP strongly inhibited NO release in a dose-dependent manner. To further investigate this anti-inflammatory activity, we identified molecular pathways by immunoblot analyses of nuclear fractions and whole cell lysates prepared from LPS-stimulated RAW264.7 cells with or without PPP pretreatment. The nuclear levels of p50, c-Jun, and c-Fos were significantly inhibited when cells were exposed to PPP. Moreover, according to the luciferase reporter gene assay after cotransfection with either TRIF or MyD88 in HEK293 cells, NF-κB-mediated luciferase activity dose-dependently diminished. Additionally, it was confirmed that PPP dampens the upstream signaling cascade of NF-κB and AP-1 activation. Thus, PPP inhibited Syk, Src, and TAK1 activities induced by LPS or induced by overexpression of these genes. Therefore, our results suggest that PPP displays anti-inflammatory activity via inhibition of Syk, Src, and TAK1 activity, which may be developed as a novel anti-inflammatory drug.
Chalcone*
;
Genes, Reporter
;
HEK293 Cells
;
Luciferases
;
Macrophages
;
Necrosis
;
Nitric Oxide
;
Nitric Oxide Synthase
;
Phosphotransferases*
;
RNA, Messenger
;
Transcription Factor AP-1
10.Direct Measurement of Chamber Response Function and Its Application to Radiation Dose Distribution Dosimetry.
Byong Yong YI ; Sang Hoon LEE ; Byung Chul CHO ; Jong Hoon KIM ; Eun Kyung CHOI ; Soo Il KWON ; Hyesook CHANG
Journal of the Korean Society for Therapeutic Radiology 1997;15(1):65-70
PURPOSE: To obtain the actual dose distribution from measured data by deconvolution method using the measured ion chamber response function. MATERIALS AND METHODS: The chamber response functions for 2 ionization chambers (diameter 5mm, 6.4mm) were measured, and dose profiles were measured for 10X20cm2 field size using two different detectors. The deconvolution of chamber response function from the measured data were performed for these profiles. The same procedures were repeated for 4MV, 6MV and 15MV photon energies. RESULTS: Different dose profiles were obtained for the same field with the chambers which have the different response functions. Nearly the same results could be obtained with deconvolution for the profiles from various detectors. CONCLUSION: The effect of the chamber response function can be extracted by deconvolution method. Deconvolved dose profile using various ionization chambers gave better dose distributions. Technical improvements are needed for practical application.