CD44v6 was known as tumor marker for tumor progression and metastasis in various kinds of carcinomas. The CD44v6 monoclonal antibody was produced by cell cultures or mouse ascite fluids using CD44v6 hybridoma cells, and its immunogloburin G (IgG) was purified by Protein A column. Using immobilized ficin and cysteine, the antibody fragment Fab was produced and purified by Protein A. Four CD44v6 scFv molecules were produced from the recombinant DNA and phage antibody technology and prurified by His-tag affinity chromatography. In order to inspect the function and specificity of each antibody molecule, western-blotting and ELISA against CD44v5-6 recombinant proteins and irnmunodetection in human ovarian carcinomas were estabilished. The results showed that immunodiagnosis did not distinguish the types of antibody fragments, but western-blotting and ELISA results did show some difference of their specificities and biological properties. These studies will contribute as a model study for the immunodiagnosis and therapy using the IgG, Fab and scFv of CD44v6 antibody to obtain the early detection of tumor progression and metastasis using immunoscintigraphy.
Animals ; Bacteriophages ; Cell Culture Techniques ; Chromatography, Affinity ; Cysteine ; DNA, Recombinant ; Enzyme-Linked Immunosorbent Assay ; Ficain ; Humans ; Hybridomas ; Immunoglobulin Fragments* ; Immunoglobulin G ; Immunologic Tests ; Mice ; Neoplasm Metastasis ; Recombinant Proteins ; Sensitivity and Specificity ; Staphylococcal Protein A

PURPOSE: MRI is known to be an effective imaging modality of the aorta and its role is steadily increasing in the evaluation of acquired aortic diseases including aortic dissections and aortic aneurysms. However, differentiation of the aortic dissections with thrombosed false lumen from the aortic aneurysm with mural thrombus in MRI has not been easy. Therefore, the authors tried to find the characteristic MR featrses which would to differentiate the two diseases. MATERIALS AND METHODS: MR images of 6 patients with thrombosed aortic dissection and 7 patients with thrombosed aortic aneurysms were reviewed retrospectively and compared in regand to shape and extent of thrombus, dimension of aorta, and luminal flow signal. RESULTS: Thrombosed aortic dissections showed sharply demarcated crescent shaped aortic wall thickening of even thickness involving long segment of the aorta, whereas thrombosed aortic aneurysms showed irregular aortic wall thickening of uneven thickness localized in the short dilated segment of the aorta. Characteristically aortic aneurysm with mural thrombus showed eccentric intraluminal slow flow signal. In contrast to the signal void of the true lumen in aortic dissections, the residual lumen of the aortic aneurysm with mural thrombus revealed intraluminal signal due to slow flow. CONCLUSION: Familiarity to these MRI findings of thrombosed aortic dissections and aortic aneurysms may lead to the accurate differential diagnosis in majority of cases.
Aorta ; Aortic Aneurysm* ; Aortic Diseases ; Diagnosis, Differential* ; Humans ; Magnetic Resonance Imaging* ; Phenobarbital ; Recognition (Psychology) ; Retrospective Studies ; Thrombosis

Metabolic acidosis (MA) is associated with increased proteolysis, increased osteoclast activity and blunted cardiac muscle response, but the effect of MA on various clinic al parameters in CAPD patients is not well known. To evaluate the effects of MA on serum albumin level and other nutritional parameters in CAPD patients, we studied 106 CAPD patients retrospectively who have had monthly biochemical measurement and urea kinetic studies every 6 months for more than 2 years. The patients were divided into three groups according to their mean total CO2 (tCO2) level of the 2-year follow-up (Group l; mean tCO2 < 22mM/L, Group ll; 22mM/L < or = mean tCO2 < 26mM/L, and Group lll; mean tCO2 > or = 26mM/L), and the clinical, biochemical, and urea kinetic data were compared among the three groups. 1)The mean age of the subjects was 46.9+/-12.2 years with a sex ratio of 1.2:1, the mean CAPD duration 28.3+/-21.8 months, mean body weight (Bwt) 59.0+/-8.9kg, %Bwt/IBW 104.1+/-11.5%, %LBM/Bwt 75.5+/-11.1% and well-nourished patients by subjective global assessment (SGA) were 65%. 2)The mean BUN, creatinine, total protein and albumin of all patients were 55.6+/-13.6mg/dL, 12.3+/-3.5mg/dL, 6.6+/-0.7g/dL and 4.0+/-0.4g/dL, respectively. In urea kinetic study, the mean NPCR, weekly Kt/ Vurea, SCCr and RRF were 0.96+/-0.16g/kg/day, 2.02+/-0.37, 63.7+/-18.4L/week/1.73m2, and 0.99+/-1.32ml/ min, respectively. 3)The mean age was significantly higher in group l (51.0+/-10.8) than those of group ll (47.0+/-12.4) and lll (42.6+/-11.4) (P<0.05). %Bwt/IBW of group l (114.4+/-15.8%) was also significantly higher than those of group ll (104.6+/-12.6%) and lll (103.5+/-13.7 %) (P<0.05), but there were no significant differences in sex ratio, CAPD duration, %LBM/Bwt, and SGA among the three groups. 4)The mean tCO2 in group l, group ll, and group lll were 20.6+/-1.2mM/L, 23.9+/-1.1mM/L, and 27.3+/-0.8mM/L, respectively. Compared to group lll, group l had significantly higher BUN (61.1+/-14.3 vs. 46.1+/-7.2mg/dL, P<0.05) and serum albumin (4.04+/-0.31 vs. 3.75+/-0.39g/dL, P<0.05), in spite of comparable dialysis dose and albumin loss into dialysate. 5)NPCR (1.02+/-0.21g/kg/day vs. 0.88+/-0.14g/kg/ day, P<0.05) and ultrafiltration volume (1.4+/-0.4 vs. 1.0+/-0.3, P<0.05) were significantly higher in group l than those of group lll. But there were no significant differences in Kt/Vurea, SCCr, RRF, and 24-hour dialysate loss of protein/albumin among the three groups. 6)No differences were observed among the three groups in the changes of body weight, %Bwt/IBW, %LBM/Bwt, BUN, albumin, NPCR, and RRF from the baseline values after the 2-year follow-up. 7)There were significant inverse correlations between the mean tCO2 level and NPCR (r=-0.33, P<0.001), %Bwt/IBW (r=-0.32, P<0.001), RRF (r=-0.29, P<0.005), and serum albumin level (r=-0.24, P<0.05). But, creatinine, %LBM/Bwt, and Kt/Vurea did not show any correlation with the mean tCO2 level. 8)Using stepwise multiple regression analysis, NPCR (beta=-0.3491, P<0.001), %Bwt/IBW (beta=-0.046, P<0.001), and ultrafiltration volume (beta=-0.0012, P< 0.005) were independent factors affecting the mean tCO2 level. In conclusion, low total CO2 level in long-term CAPD patients may reflect increased protein intake and mild to moderate degree of metabolic acidosis may not affect the nutritional status of well-dialyzed CAPD patients.
Acidosis* ; Body Weight ; Creatinine ; Dialysis ; Follow-Up Studies ; Humans ; Myocardium ; Nutritional Status ; Osteoclasts ; Peritoneal Dialysis, Continuous Ambulatory* ; Proteolysis ; Retrospective Studies ; Serum Albumin* ; Sex Ratio ; Ultrafiltration ; Urea

No abstract available.
Adult* ; Humans ; Orbit*

There are some errors in the published article. The authors would like to make corrections in the original version of the article.

No abstract available.
Neoplasm Metastasis* ; Skull* ; Thyroid Gland* ; Thyroid Neoplasms*

Superficial siderosis is a rare condition characterized by hemosiderin deposition in leptomeninges, subpial tissue, brainstem, cerebellum, spinal cord, and cranial nerves. Slowly progressive hearing loss and gait ataxia are invariable clinical manifestations. We report three patients with their clinical and radiological features. All patients presented with hearing loss and cognitive dysfunction. Two showed gait ataxia and myelopathic symptoms and signs. Decreased visual acuity, hand tremor, limb ataxia, dysarthria, and nystagmus were also present. All patients showed typical MRI findings: marked linear hypointensities around the cerebellum, brainstem, and the surface of the cerebral cortex, especially in sylvian fissures. Two patients had brain tumors : pituitary adenoma and oligodendroglioma. Another patient had no definite bleeding source. Hemosiderin deposition is caused by chronic and recurrent subarachnoid hemorrhage derived from tumor, vascular malformation, aneurysm, posthemispherectomy, and unknown bleeding sources. Diagnosis is easily made by characteristic clinical manifestations and MRI findings. The selective vulnerability of the cerebellum and the 8th cranial nerve depends upon their own histological and biochemical characteristics. Benefits of the iron chelating agents are questionable. Removal of the possible bleeding sources is the most reliable strategy to prevent the disease progression.
Adenoma ; Aneurysm ; Ataxia ; Brain Neoplasms ; Brain Stem ; Cerebellum ; Cerebral Cortex ; Cranial Nerves ; Diagnosis ; Disease Progression ; Dysarthria ; Gait Ataxia ; Hand ; Hearing Loss ; Hemorrhage ; Hemosiderin ; Humans ; Iron Chelating Agents ; Magnetic Resonance Imaging ; Oligodendroglioma ; Pituitary Neoplasms ; Siderosis* ; Spinal Cord ; Subarachnoid Hemorrhage ; Tremor ; Vascular Malformations ; Visual Acuity

A case of transient neonatal diabetes mellitus combined with congenital adrenal hyperplasia(CAH) is described. A female infant was born by cesarean delivery due to fetal distress, she had sunken eyeball and anterior fontanelle, large protruded tongue and thin subcutaneous tissues. She had large clitoris and progressive pigmentation on whole body was observed since 10th day of birth. Hyperglycemia and glycosuria was noted at 3rd day of birth. Level of insulin and C-peptide was 3.0 mU/L and 0.35 ng/mL respectively. Serum ACTH was 870.4 pg/mL and 17-hydroxyprogesterone was increased to 20,000 ng/dL. Serum Na was 124 mEq/L, K 5.6 mEq/L. Abdominal MRI showed no abnormality. Chromosomal study showed 46,XX. Genetic analysis with polymorphic DNA markers for chromosome 6 showed paternal uniparental isodisomy at D6S276, D6S1704 and DNA analysis of CYP 21 gene showed mutation at P435S. She required insulin therapy for 8 months after birth. Hydrocortisone and florinef was needed for the control of CAH.
17-alpha-Hydroxyprogesterone ; Adrenal Hyperplasia, Congenital* ; Adrenocorticotropic Hormone ; C-Peptide ; Chromosomes, Human, Pair 6 ; Clitoris ; Cranial Fontanelles ; Diabetes Mellitus* ; DNA ; Female ; Fetal Distress ; Genetic Markers ; Glycosuria ; Humans ; Hydrocortisone ; Hyperglycemia ; Infant ; Insulin ; Magnetic Resonance Imaging ; Parturition ; Pigmentation ; Subcutaneous Tissue ; Tongue ; Uniparental Disomy

This erratum is being published to correct the printing error on page 286 of the article entitled 'Panton-Valentine leukocidin positive Staphylococcus aureus isolated from blood in Korea' by Kim JS, Park JS, Song W, Kim HS, Cho HC, Lee KM, Kim EC in Korean J Lab Med 2007;27:286-91. DOI 10.3343/kjlm. 2007.27.4.286 as follows. The heading of the right column of the Table 1 was misprinted as methicillin-resistant, so it should be corrected to methicillin-susceptible.
Adult ; Amino Acid Substitution ; Brain Neoplasms/radiotherapy/surgery ; Breast Neoplasms/diagnosis/radiotherapy/surgery ; Female ; *Genetic Counseling ; Genetic Predisposition to Disease ; *Germ-Line Mutation ; Humans ; Li-Fraumeni Syndrome/*diagnosis/genetics/therapy ; Mutation, Missense ; Pedigree ; Tumor Suppressor Protein p53/*genetics

BACKGROUND: Confluent and reticulated papillomatosis(CRP), the least common of the cutaneous papillomatoses, is manifested by persistent papules that are confluent in center and reticulated at the periphery. Recently, many cases of CRP treated with minocycline have been reported. METHODS: Thirteen patients with CRP were included in this study. They were treated with various antibiotics, such as erythromycin, tetracycline, doxycycline, and minocycline. The patients have taken antibiotics twice a day for 4 weeks. They were followed-up at 4, 8, 12, and 16 weeks after treatment. We assessed about therapeutic effects, side effects, and recurrence, by phone 1 year after treatment. RESULTS: Of the total 13 patients, 9 patients had improved by more than 95% in response to various antibiotics therapy for 4 months. One patient had a mild adverse reaction and two patients symptoms recurred after 1 year follow-up. CONCLUSION: We recommended various antibiotics therapy as the first choice of treatment for CRP because those were safe, economic, and effective.
Anti-Bacterial Agents* ; Doxycycline ; Erythromycin ; Follow-Up Studies ; Humans ; Minocycline ; Papilloma* ; Recurrence ; Tetracycline