BACKGROUND: Murine IL-2-induced lymphokine-activated killers can be divided into two mutually exclusive subset:NK1.1'CD8 and NK1.1 CD8+. However, there is a strong evidence that NK cell may belong to T cell lineage. Recently novel lymphocyte subsets, present in the adult murine thymus, CD3+NK1.1'TCRap(TNK) cell is readily identifiable in fresh obtained murine adult CD4 CD8 thymocytes. MATERIAL AND METHOD: We sorted out CD4 and CD8 (double negative.' DN) cells and CD8+ cells from murine spleen and cultivated these cells with IL-2. And the surface B220, CD8, NK1. 1 and cytopasmic NK1.1 was analysed simultaneously to see whether these cells can be switched to the other subtype of cells. RESULT: Purified DN cells were switched to several subtype of cells'. CD8'B220+(LAK cells), NK1.1'B220+(LAK cells), CD8 B220, cytoplasmic NK1.1+B220 cells. Purified CD8 cells were switched to CD8+B220' LAK cells and cytoplasmic NK1.1+ CD8+ B220+ and cytoplasmic NK1.1' CD8 B220 cells. In addition, the CD8' cells originated from DN cells do not express the cytoplasmic NK1.1 in contrary to the sorted CD8 cells. CONCLUSION: Our results indicated that these will be useful models to investigating CD8 precursor potentials in populations of CD4 CD8 (doble negative) cells and relationship of NK1.1 These results also supports the hypothesis that T cells and NK cells have same ontogeny and CD8 effector functions are potentially diverse and could be exploited by various conditions that switch off host protected cytolytic response. These model offer a way to study the molecular regulation of CD8 gene expression.
Adult ; Cell Lineage ; Cytoplasm ; Gene Expression ; Humans ; Interleukin-2* ; Interleukins* ; Killer Cells, Lymphokine-Activated ; Killer Cells, Natural ; Lymphocyte Subsets ; Spleen ; T-Lymphocytes ; Thymocytes ; Thymus Gland

The results of 16 cases of herpes simplex keratitis treated by cryogenic method are presented. The cryoapplicators(2 mm and 4 mm in diameter of tip) were applied on the lesions 5-7 seconds and antibiotics and atropine solutions were instilled. No complication by cryogenic treatment was happened. The new vessels in the cornea were faded after cryocautery for the treatment of herpes simplex keratitis.
Anti-Bacterial Agents ; Atropine ; Cornea ; Herpes Simplex* ; Keratitis, Herpetic

BACKGROUND: Transforming growth factor-beta(TGF-beta) has multiple regulatory effects on cells of the immune system, and it has been suggested that differentiation of lymphoid cells is influenced by low concentra tions of this cytokine. OBJECTIVES: The aim or this study was to investigate the role of TGF-beta in regulation of T cell growth and differentiation, and to compare this effect with that of other cell signals known to be important in T cell ontogeny. METHODS: We used the CTLL-2 cell line in the presence of IL-2. Surface phenotype expression was analysed to see whether these cells could be switched to the other subtype of cells. RESULT: Treatment of CTLL-2 cells with TGF-beta resulted in dose dependent growth inhibition and morphological changes. Curing routine passage, less than 5% of cells were CD8alpha positive, whereas 38% of cells expressed CD8alpha when treated with IL-2 plus TGF-beta. However, TPA plus calcium ionophore, IFN-gamma, or TNF-alpha caused no significant changes in the proportion of CD8 cells. CONCLUSION: Our results show that this experiment can be a useful model for investigating CD8 precursor potentials in populations of CD4-CD8-(double negative) cells, and such a model may offer a way to study the molecular regulation of CD8 gene expression.
Calcium ; Cell Line* ; Gene Expression ; Immune System ; Interleukin-2 ; Lymphocytes ; Phenotype ; Transforming Growth Factor beta ; Tumor Necrosis Factor-alpha

No abstract available.
HIV-1* ; Humans* ; Tumor Necrosis Factor-alpha*

No abstract available.
Child* ; Humans

The results of 234 cataract extractions by freezing method are presented. An important advantage of cryoextraction is the reduced incidence of accidental capsular rupture. Good results can be achieved even by the begginner. Cryoextraction of cataract has proved well suited as a routine method.
Cataract ; Cataract Extraction ; Freezing ; Incidence ; Rupture

Hypersensitivity myocarditis is an inflammatory disease of the myocardium usually related to drug allergy. The clinical manifestation may be nonspecific, and the diagnosis is seldom suspected or established during the life. So in most of the reported patients, the diagnosis was made at autopsy. Although, retrospectively, more than 90% of the patients described have had clinically recognizable cardiac involvement before death, tole clinical suspicion of hypersensitivity myocarditis is rare. The presence of nonspecific cardiac finding in a patient receiving any drug associated with hypersensitivity should alert the clinician to the possibility of drug related myocarditis. We experienced a case of hypersensitivity myocarditis accompanying allergic skin lesion in a 58 years old man with a history of taking cefadroxil. Fortunately, the outcome was favorable, therefore we do not have histologic confirmation of the diagnosis.
Autopsy ; Cefadroxil ; Diagnosis ; Drug Hypersensitivity ; Humans ; Hypersensitivity* ; Middle Aged ; Myocarditis ; Myocardium ; Retrospective Studies ; Skin

BACKGROUND: Bronchial asthma is classically defined as a reversible obstruction and hypsrresponsiveness of the airway attributed to an inflammatory process. However, some individuals with asthma show an irreversible component of airflow obstruction. It may be associated with structural changes in the airway resulting from severe or long standing air- way inflammation and remodelling. OBJECTIVE: The study was undertaken to compare the clinical characteristics of patient and airway remodelling as shown in bronchial wall thickness in HRCT according to the duration of asthma. MATERIALS AND METHODS: A retrospective clinical study was done on 119 patients with bronchial asthma, who had been admitted to Ewha Womans University Mokdong Hospital. Patients were divided to three groups according to disease duration and, clinical characteristics, pulmonary function test and HRCT were done. RESULTS: Basal FEV, and FVC was significantly lower in patient with longer duration. (p<0. 05) However pulmonary function was improved regardless of disease duration after 2 weeks steroid and bronchodilator therapy, and there was no significant difference in level changes according to the disease duration. The inner diameter of the bronchi and thickness of the bronchial wall at segmental and subsegmental bronchi increased significantly in patient with longer duration of asthma(p<0.05). Conclusion: These findings showed that airway remodelling was more extensive in patients with longer duration of disease resulting in decreased pulmonary function. These facts suggested that early anti-inflammatory therapy would be helpful for prevention of airway remodelling.
Airway Remodeling* ; Asthma* ; Bronchi ; Female ; Humans ; Inflammation ; Respiratory Function Tests ; Retrospective Studies

Squamous cell carcinoma is relatively rare in the eyelid, accounting for about 9.2% of all eyelid malignancy. Squamous cell carcinoma occurs most commonly in fair-skinned, elderly individuals who have had a history of chronic sun exposure and skin damage. This potentially lethal neoplasm is capable of metastasis to regional lymph nodes. Squamous cell carcinoma may arise de novo or from pre-existing lesions and also develop following radiation therapy. Various treatment modalities have been advocated including surgical extirpation with histologic control, radiation therapy and cryotherapy. We report this case of regional metastatic squamous cell carcinoma that developed from recurrent chalazion in 37 years old woman with a brief review of literetures.
Adult ; Aged ; Carcinoma, Squamous Cell* ; Chalazion* ; Cryotherapy ; Eyelids ; Female ; Humans ; Lymph Nodes ; Neoplasm Metastasis ; Skin ; Solar System

Squamous cell carcinoma is relatively rare in the eyelid, accounting for about 9.2% of all eyelid malignancy. Squamous cell carcinoma occurs most commonly in fair-skinned, elderly individuals who have had a history of chronic sun exposure and skin damage. This potentially lethal neoplasm is capable of metastasis to regional lymph nodes. Squamous cell carcinoma may arise de novo or from pre-existing lesions and also develop following radiation therapy. Various treatment modalities have been advocated including surgical extirpation with histologic control, radiation therapy and cryotherapy. We report this case of regional metastatic squamous cell carcinoma that developed from recurrent chalazion in 37 years old woman with a brief review of literetures.
Adult ; Aged ; Carcinoma, Squamous Cell* ; Chalazion* ; Cryotherapy ; Eyelids ; Female ; Humans ; Lymph Nodes ; Neoplasm Metastasis ; Skin ; Solar System