No abstract available.
Lung Neoplasms* ; Lung*

It has been thought the histological features of rheumatoid arthritis do not reliably indicate the degree of activity or prognosis of the disease and that they are not specific for that condition (Hemerman, 1963). Recently, however, Muirden and Mills (1971) found in rheumatoid joints submitted for synovectomy a direct correlation between the degree of lymphocytic infiltration and joind damage. Lymphocytes might play a helpful role in protection of the rheumatoid joint. Muirden (1970) has also reported a significant relationship between histological estimates of the extent of the iron deposits nd the grades of roentgenographic changes in biopsied joints. The present study directed to confirm and analyze the changes in the clinical and pathological aspects, with the cases synovectomized at Korea and Severance Hospital, Seoul, Korea. Resuits: Clinical and histological studies were made on 21 cases of “classical” and “definite” rheumatoid arthritis submitted to the Department of Orthopaedic, Korea General Horsital and the Department of Pathology, Yonsei University College of Medicine, during the period from 1966 to 1975, and results were as follows. 1 In age distribution, 16 cases (76.2%) were in the interval between 21 and 51 years old: the mean age was 33.5 years old. The sex distribution showed approximately a three fold female predominance with 16 females (76.2%) to 5 male cases (23.8%). 2. The most common chief complaint recorded were morning stiffness and multiple joint pain. Other symptoms, in descending order of occurrence were tenderness, synovial swelling, flexion deformity, joint swelling and subcutaneous nodules. The interval from initial complaint to admission varied from 7 months to 15 years, with a mean interval of 5.9 years. 3. Serological studies for rheumatoid factor were done on 15 cases and eight (53.3%) were found to be positive while seven cases (46.7%) were negative. The positive cases had longer histories and were in older age groups than the negatives. 4. Histologic findings were characterized by proliferation of suface lining cells of synovium, infiltration of lymphocytes, proliferation and thickeness of the vessels, and synovial villi, deposition of fibrins and hemosiderins and infiltration of acute inflammtory celIs. Each of the characteristics studied was ratect on a scaled score ranging from 0 to 3 from 1 to 3. For each patient the scaled scores were totaled and the totals ranged between 6 and 18 with a mean score of 10.5 5. Roentgenographic findings were characterized by swelling of the soft tissues swelling of the joints,. narrowed space of the joint cavity, and destruction of bone. Each of the characteristics studied was rated. on a scaled score ranging from 0 to 3 or from 1 to 3. For each patient the scaled scores were totaled and the totals ranged between 3 and 11 with a mean score of 7.1. 6. There was no significant correlation between histologic findings such as synovial hyperplasia or infiltration of lymphocytes, and clinical findings such as age, duration of histories, presence of rheumatoid factor, roentgenographic findings or surgicaI findings.
Age Distribution ; Arthralgia ; Arthritis, Rheumatoid ; Congenital Abnormalities ; Female ; Fibrin ; Hemosiderin ; Humans ; Hyperplasia ; Iron ; Joints ; Korea ; Lymphocytes ; Male ; Pathology ; Prognosis ; Rheumatoid Factor ; Seoul ; Sex Distribution ; Synovial Membrane

PURPOSE: Liver-directed gene therapy is being actively pursued and developed as a method of treating various liver diseases. A number of aspects, including gene intervention, an efficient gene delivery system, and stable transgene expression are key to the success of the chosen strategy, and to overcome problems in these areas, several tactics can be used. In this study, we assess the utility of transarterial embolization using gelfoam particles soaked in an adenovirus vector as a gene-delivery method. MATERIALS AND METHODS: Using the angiographic approach, three dogs each weighing 9.5-11 kg were superselectively catheterized at the left hepatic artery using a 3-F microcatheter and the coaxial method. Two of the dogs were embolized at the left hepatic artery using 3x2x2-mm and 2x1x1-mm gelfoam particles soaked in 2x1011 particles/kg of recombinant adv.CMV.LacZ (LacZ-adv). The left hepatic artery of the remaining animal, used as a control, was infused with the same dose of lacZ-adv in the same way as before but without embolization of the left hepatic artery. Three days after embolization or the infusion of LacZ-adv, the dogs were sacrificed prior to harvest of the entire liver for the evaluation of gene transduction. RESULTS: X-gal staining of the liver tissue obtained was positive for hepatocytes, but the pattern and degree of gene transduction differed according to gelfoam particle size. Where this was 3x2x2 mm, gene transduction along the liver hilum varied, but where 2x1x1-mm particles were used, transduction was more even. No pathologic hepatic tissue injury or inflammation was apparent, and control liver tissue was not stained by Xgal. Serum SGOT and SGPT levels were slightly higher one day after the procedure, but had normalized by day 3. CONCLUSION: Intrahepatic transarterial embolization using gelfoam particles soaked in LacZ-adv appears to be a good method for effective liver-targed gene therapy.
Adenoviridae ; Alanine Transaminase ; Animals* ; Aspartate Aminotransferases ; Catheters ; Dogs* ; Gelatin Sponge, Absorbable* ; Gene Transfer Techniques ; Genetic Therapy* ; Hepatic Artery ; Hepatocytes ; Inflammation ; Liver ; Liver Diseases ; Particle Size ; Transgenes

Nitric oxide(NO) has been known to play an important role as a signal molecule in many parts of the organism as well as a cytotoxic effector molecule of the nonspecific immune response. Excessive NO has been reported to exert cytotoxic effect by direct toxicity or by reacting to superoxide radicals during ischemia-reperfusion. Therefore is strongly needed a study directly measuring NO release designed to better clarify roles of NO in ischemia-reperfusion injury and its mechanism. Male Sprague-Dawley rats were anesthetized with urethane(1g/kg) intraperitoneally, and pedicled gastrocnemius muscle flaps were elevated. The elevated flaps were subjected to 4 hours of arterial ischemia and then reperfused for 2 hours. And then NO current was measured in the gastrocnemius muscle using NO-selective microelectrode system. NO release gradually increased and then decreased in the rat gastrocnemius muscle during both ischemic and reperfusion period. The average NO releases from baseline during ischemia and reperfusion were 10405 +/- 2663 and 2513 +/- 970 picoamperes(pA), respectively. The ischemia-reperfusion caused substantial histological damage in the skeletal muscle, in which a profusion of red blood cells was observed due to extravasation of vessels, rupturing of microcirculation, and leukocyte infiltration, compared to the damage in control and ischemic rat gastrocnemius muscles. From the above results, ischemia-reperfusion injury was developed more severely during reperfusion than ischemia, and NO increased during ischemia and reperfusion as a biphasic pattern in the rat gastrocnemius muscle.
Animals ; Erythrocytes ; Humans ; Ischemia ; Leukocytes ; Male ; Microcirculation ; Microelectrodes ; Muscle, Skeletal* ; Muscles ; Nitric Oxide* ; Rats* ; Rats, Sprague-Dawley ; Reperfusion ; Reperfusion Injury ; Superoxides

No abstract available.
Chancre* ; Eczema* ; Nipples*

In order to obtain the most specific and sensitive antigen from crude antigens of Fasciola hepatica for the immunodiagnosis of bovine fascioliasis by the enzyme linked immunosorbent assay(ELISA), phosphate buffered saline extract of F. hepatica was prepared. The crude extract was fractionated into 7 antigens using Sephadex G-100 column chromatography. Seven fractionated antigens were applied to ELISA, precipitation test and intradermal test, respectively. Results obtained are as follows: The specificity (95 per cent confidence interval in negative sera of bovine fascioliasis ; Mean+2 x SD of absorbance ) of the first (MW>150,000) and the second antigens (MW 120,000) were 93.7 per cent, but those of others including crude antigen showed 100 per cen.t. The sensitivity (positive sera of bovine fascioliasis having higher values with compared to the criterion) of the first, the sixth (MW 16,000) and the seventh antigen (MW<5,000) were 91.6 per cent, 87.5 per cent and 0 per cent, respectively, but those of others showed all 100 per cent. The absorbance by ELISA using the fifth antigen (MW 26,000) was 8.43-folds higher in the positive sera than that in the negative sera. This could be used as one of the most specific antigens for the immunodiagnosis of bovine fascioliasis. In Ouchterlony test, precipitin lines were not found in the sera naturally infected with F. hepatica, but some were found in the sera of rabbits immunized with the crude antigens. The numbers of precipitin lines in the sera of rabbits were different in the different fractionated antigens. They were 6 in the crude, 2 in the second and the third antigens, 1 in the forth, the fifth and the sixth antigens and absent in the seventh antigen, respectively. The wheal size for the bovine infected with F. hepatica was 2.46+-0.15 cm in the intradermal test antigen (saline extract of F. hepatica) supplied by the Veterinary Research Institute, Rural Development Administration, Korea. The wheal size of the first, the second and the third antigens were larger than that of intradermal test antigen, whereas those of the forth, the fifth, the sixth and the seventh antigens showed smaller than that of the intradermal test antigen. The results suggest that the fifth antigen may be specific antigen for the immunodiagnosis of bovine fascioliasis.
parasitology-helminth-trematoda ; immunology ; enzyme-linke immunosorbent assay ; diagnosis ; fascioliasis ; Fasciola hepatica

The diagnosis of internal jugular vein thrombosis (IJVT), a vascular disorder, can be easily overlooked. Disruption of blood flow through the internal jugular vein can take place in a variety of clinical settings. CT and ultrasonography are useful diagnostic tools. Recently, we experienced a case of IJVT after deep neck infection. This case showed sore throat, odynophagia and swelling of right submandibular area. CT scan revealed diffuse neck swelling and incomplete occlusion of the right internal jugular vein at the thyroid level. Treatment began with antibiotics and hydration. We present a case of IJVT after deep neck infection with literature review.
Anti-Bacterial Agents ; Diagnosis ; Jugular Veins* ; Neck* ; Pharyngitis ; Thrombosis* ; Thyroid Gland ; Tomography, X-Ray Computed ; Ultrasonography

Several reports have described the usefulness of tumor markers detected in pancreatic juice for diagnosis of pancreatic cancer. We performed this study to evaluate the usefulness of tumor markers in pure pancreatic juice collected by duodenoscopic cannulation of pancreatic duct before and after injection of secretin. From April 1993 to July 1995, 8 cases of pancreatic cancer, 5 cases of benign pancreatic lesions, and 5 cases of benign biliary diseases without pancreatic lesion were involved. CEA and CA 19-9 immunoreactivity were measured by radioimmunoassay. Concentrations of CA 19-9 in pure pancreatic juice were significantly higher in patients with pancreatic cancer(median value; 3582, range 88.4-10410 IU/ml) than in control patients(median value 231, range 30.4-682 IU/ml)(p<0.05). Concentrations of CEA in pure pancreatic juice were not significantly different between patients with pancreatic cancer(median value: 6,5, range 1.0-152ng/ml) and control patients(median value: 4.0, range 1-17.2 ng/ml)(p>0.05). There was no significant correlation between levels of CA19-9, CEA in pancreatic juice and those levels in serum. The amounts of juice collected by duodenoscopic cannulation in patients with pancreatic cancer were 1.5+/- 0.9ml during 5 minutes before infusion of secretin, 11.3+/- 3.9ml, 10.8+/- 4.0ml, 10.6+/- 4.0ml in 5 minute interval after infusion of secretin. These results indicated that measurement of CA19-9 in pure pancreatic juice may be used as a marker for pancreatic cancer. Adequate amount of pancreatic juice was collected by duodenoscopic cannulation for evaluation of tumor marker, enzyme studies and cytology.
Catheterization ; Diagnosis ; Humans ; Pancreatic Diseases ; Pancreatic Ducts ; Pancreatic Juice* ; Pancreatic Neoplasms ; Radioimmunoassay ; Secretin ; Biomarkers, Tumor

BACKGROUND: Colorectal cancer (CRC) is one of the most common malignant neoplasms and is a leading cause of mortality worldwide. Metastasis to the liver is a frequent event in patients with CRC. An essential step in the metastatic cascade is angiogenesis. METHODS: This study included 45 patients who underwent a partial colectomy with hepatic resection for CRC with hepatic metastases. Immunohistochemistry was performed using vascular endothelial growth factor (VEGF)-A, VEGF receptor (VEGFR)-1, VEGFR-2, and CD34 antibodies to examine the relationship between CRC with liver metastases and angiogenesis. RESULTS: CRC showed significantly stronger expression of VEGF-A, VEGFR-1, and VEGFR-2 than liver metastases (p < 0.05). Microvessel density was also higher in CRC than in liver metastases (p < 0.05). CONCLUSIONS: Compared with previous studies, we found a higher expression of VEGF-A, VEGFR-1, VEGFR-2, and microvessel density in CRC than in liver metastases, which could be ascribed to a difference in vessel distribution and blood supply in each organ. Given its profuse blood supply and distinct cell populations, the liver might provide a rich milieu for tumor cell growth with less expression of angiogenesis-inducing agents.
Antibodies ; Colectomy ; Colorectal Neoplasms ; Glycosaminoglycans ; Humans ; Immunohistochemistry ; Liver ; Microvessels ; Neoplasm Metastasis ; Receptors, Vascular Endothelial Growth Factor ; Thymus Gland ; Vascular Endothelial Growth Factor A ; Vascular Endothelial Growth Factor Receptor-1 ; Vascular Endothelial Growth Factor Receptor-2 ; World Health Organization

PURPOSE: The purpose of this study is to understand and analyse the actual education environment of the subject, life science, and how it is taught in high school, and thereby make a realistic assessment of whether a medical life science experience program is necessary. METHODS: The test method to assess the actual curriculum was developed by Life Science teachers, medical school faculty and education specialists. The subject was divided into 4 areas consisting of 6 items each. Our survey was mailed out. The analysis consisted of frequency analysis, chi-square analysis, correlation analysis, and variance analysis using SPSS 13.0 for Windows. RESULTS: Over 90% of Life Science class teachers agreed that teaching should be done through lectures and lab experiments in parallel. However, currently the class is heavily lecture-oriented due to the lack of lab facilities, the lack of budget and the difficulty of organizing lab courses. Due to the nature of the subject, lab experiments are crucial. Therefore, it is recommended that a biomedical science experience program be included in the curriculum. This program should be offered during vacation and geared toward high school freshmen and sophomore students. CONCLUSION: This research clearly showed the need to develop a high school biomedical science experience program. In order for the program to be successful, one must take into consideration the safety of experiments, the capability of the instructors, the development of a variety of experiments, the accessibility of the location of the lab, securing interest in education at a community level and the compilation of an experience program at every educational level.
Biological Science Disciplines* ; Budgets ; Curriculum ; Education* ; Humans ; Lectures ; Postal Service ; Schools, Medical ; Specialization