No abstract available.
Sarcoma*

Standard plaque assay using agarose-overlay has long been used for titration of many infectious virus particle. Plaque assay for the titration of varicella-zoster virus and its live vaccine requires three intermittent agarose overlay to visualize plaques. Overall procedure of the assay takes at least nine days from virus inoculation and microbe contamination including fungi is frequently accompanied during incubation period. We studied whether an immunofocus assay in conjunction with peroxidase-mediated immunohistochemical reaction may replace the standard plaque assay for the virus titration by comparing the two methods. A linear relationship was observed between number of foci and virus dilution. The number of foci in a given dilution of virus appeared a little higher than counted plaques formed in standard plaque assay. Independent titration results obtained from two assay methods for a given dilution of virus demonstrated a strong correlation (r2=0.99). Foci of virus infected cells as revealed by the enzyme reaction could be counted either 4 days post-infection (p.i.) under low magnification (40X) microscopy, or 6 days p.i. by naked eye observation. Larger size of cell cuture plate, virus adsorption at 35 degrees C, and 10% FBS in diluent appeared to be better conditions for the assay. Immunofocus assay will be an effective and dependable titration method for varicella-zoster virus and its live vaccine in place of the standard plaque assay in respect to accuracy, costs, and experimental convenience.
Adsorption ; Fungi ; Herpesvirus 3, Human* ; Microscopy ; Sepharose ; Virion

Catatracts are an infrequent but well-known complication of electrical injury, remains poorly understood. We report two cases of electric cataract with maculopathy experienced recently. The first case was a 58-year-old man who had exposed to 22000 voltage current and sustained third degree, 15% burn. 54th day after burn, the lenticular changes showed total opacity of both eyes and the intraocular pressure of left eye was 28 mmHg. 65th day after burn, extracapsular cataract extraction with posterior chamber lens implantation on left eye was performed. After the operation, naked vision was 1.0, but hard exudates were showed in macular area. The second case was a 23-year-old man who had exposed to 54000 voltage current and sustained third degree, 20% burn. 82th day after burn, the lenticular changes showed moderate opacities in the anterior and posterior subcapsular area of both eyes. 137th day after burn, extracapsular cataract extraction with posterior chamber lens implantation on right eye was performed. The final corrected visual acuity was 0.5 on 7th week after the operation due to lamellar macular hole.
Male ; Humans

No abstract available.
Mycobacterium tuberculosis* ; Mycobacterium* ; Polymerase Chain Reaction*

Chronic intestional pseudoobstruction syndrome is a rare clinical condition in which impaired intestinal peristalsis. Causes recurrent symptoms of bowel obstruction in the absence of a mechanical occlusion. This syndrome may involve variable segments of small or large bowel. And may be associated with urinary bladder retention. This study included 6 children(3 boys and 3 girls) of chronic intestinal obstruction. Four were symptomatic at birth and two were of the ages of one month and one year. All had abdominal distention and defication difficulty. Five had urinary bladder distention. Despite parenteral nutrition and surgical intervention(ileostomy or colostomy), bowel obstruction persisted and four patients expired from sepsis within one year. All had gaseous distention of small and large bowel on abdominal films. In small bowel series. Consistent findings were variable degree of dilatation. Decreased peristalsis(prolonged transit time) and microcolon or microrectum. This disease entity must be differentiated from congenital megacolon, ileal atresia and megacystis syndrome.
Dilatation ; Hirschsprung Disease ; Humans ; Intestinal Obstruction ; Intestinal Pseudo-Obstruction* ; Parenteral Nutrition ; Parturition ; Peristalsis ; Sepsis ; Urinary Bladder

No abstract available.
Bone Conduction* ; Ear, Middle* ; Otitis Media* ; Otitis* ; Pathology* ; Temporal Bone*

No abstract available.
Meningitis* ; Salmonella*

No abstract available.
Hepatitis E virus* ; Hepatitis E* ; Hepatitis* ; Korea*

BACKGROUND AND OBJECTIVES: Laminins are extracellular matrix proteins localized mainly in basement membranes. Currently there are at least ten different laminin chains and 11 heterotrimetric laminin variants. Laminin-5 is a heterotrimeric basement membrane molecule (alpha3beta3gamma2). It serves as an important adhesion protein for epithelial cells and it also plays an important role in cell migration during tumor invasion and tissue remodeling. This study was designed to investigate the relationship between laminin-5 expression and clinicopathologic variables in oral cavity and oropharynx squamous cell carcinomas using immunohistochemistry. MATERIALS AND METHOD: The expression of the laminin-5 around tumor cells was determined in 32 oral cavity and oropharyngeal carcinomas by immunohistochmical staining with antibody against laminin-5gamma2 chain. RESULTS: Statistical analysis showed that the frequency of laminin-5gamma2 chain expression was correlated with the lymph node metastasis (p<0.05). The poor differentiation of tumor cells, the large tumor size, advanced overall stage and the deep tumor invasion showed high expression of laminin-5, although it was not significant statistically. CONCLUSION: These results suggest that overexpression of laminin-5 in oral cavity and oropharyngeal squamous cell carcinoma might be a biomarker that can predict cervical lymph node metastasis.
Basement Membrane ; Carcinoma, Squamous Cell* ; Cell Movement ; Epithelial Cells ; Extracellular Matrix Proteins ; Immunohistochemistry ; Laminin ; Lymph Nodes ; Mouth* ; Neoplasm Metastasis ; Oropharynx

Intraductal variant of peripheral cholangiocarcinoma is extremely rare. This variant shows intraductal growth and intraluminal extension without any infiltrative growth. The mode of intraductal growth is not known. The prognosis of this variant is better than that of usual cholangiocarcinoma. We report three cases, one of which is associated with Clonorchis sinensis (CS) infection. The tumors were entirely confined within the dilated peripheral tributaries of the intrahepatic bile duct. Microscopically, the tumors were well to moderately well differentiated, with a papillary or a micropapillary growth pattern. Focal clear cytoplasmic change and mucin production were noted. The tumors showed intraductal spreading without any invasion to the liver parenchyme. Mucosal hyperplasia and dysplasia were noted in the adjacent ducts. The authors assume that intraductal cholangiocarcinoma is a distinct subtype, and persistent irritation, such as, CS infection may undergo a malignant transformation through mucosal dysplasia.
Bile Ducts, Intrahepatic ; Cholangiocarcinoma* ; Clonorchis sinensis ; Cytoplasm ; Hyperplasia ; Liver* ; Mucins ; Prognosis