Necrotizing Sarcoid Granulomatosis: Possibly Veiled Disease in Endemic Area of Mycobacterial Infection

No abstract available.

Efficacy of Interferon-Gamma Treatment in Bronchial Asthma / 결핵

BACKGROUND: There have been many in vitro evidences that interleukin-4(IL-4) might be the most important cytokine inducing IgE synthesis from B-cells, and interferon-gamma(IFN-gamma) might be a main cytokine antagonizing IL-4-mediated IgE synthesis. Recently some reports demonstrated that IFN-gamma might be used as a new therapeutic modality in some allergic diseases with high serum IgE level, such as atopic dermatitis or bronchial asthma. To evaluate the in vivo, effect of IFN-gamma in bronchial asthma we tried a clinical study. METHODS: Fifty bronchial asthmatics(serum, IgE level over 200 IU/ml) who did not respond to inhaled or systemic corticosteroid treatment, and 17 healthy nonsmoking volunteers were included in this study. The CD 23 expressions of peripheral B-cells, the IL-4 activities of peripheral T-cells, the serum soluble CD23(sCD23) levels, and the superoxide anton(O2-) generations by peripheral PMN were compared between bronchial asthmatics and normal subjects. The IL-4 activities of peripheral T-cells were analyzed by T-cell supernatant (T-sup)-induced CD23 expression from tonsil B-cells. In bronchial asthmatics the serum IgE levels and histamine PC. in addition to the above parameters were also compared before and after IFN-gamma treatment. IFN-gamma was administered subcutaneously with a weekly dose of 30,000 IU per kilogram of body weight for 4 weeks. RESULTS: The O2-, generations by peripheral PMNs in bronchial asthmatics were higher than normal subjects(8.23+/-0.94 vs 5.00+/-0.68 nmol/l x10(6) cells, P<0.05), and significantly decreased after IFN-gamma treatment compared to initial values(3.69+/-0.88 vs 8.61 +/- 1.53 nmol/l x 106 cells, P<0.05). CD23 expression of peripheral B-cells in bronchial asthmatics was higher than normal subjects(47.47 +/- 2.96% vs 31.62+/-1.92%, P<0.05), but showed no significant change after IFN-gammatreatment. The serum sCD23 levels in bronchial asthmatics were slightly higher than normal subjects( 191.04+/-23.3 U/ml vs 162.85+/-4.85 U/ml). and 11(64.7%) of 17 patients showed a decreasing pattern in their serum sCD23 levels after IFN-gamma treatment. However the means of serum sCD23 levels were not different before and after IFN-gamma treatment The IL-4 activities of peripheral T-cells in bronchial asthmatics were slightly higher than normal subjects 22.48 +/-6.81% vs 18.90+/-2.43%), and slightly increased after IFN-gamma treatment(27.90+/-2.56%). Nine(60%) of 15 patients showed a decreasing pattern in their serum IgE levels after IFN-gamma treatment. And the levels of serum IgE were significantly decreased after LEN-y treatment compared to initial values (658.67 +/- 120.84 IU/ml vs 1394.32 +/- 31442 IU/ml, P<0.05). Ten(83.3%) of 12 patients showed an improving pattern in bronchial hyperresponsiveness after IFN-gamma treatment, and the means of histamine PC20 were significantly increased after IFN-gamma treatment compared to initial values (1.22+/-0.29mg/ml vs 0.69+/-0.17mg/ml P<0.05). CONCLUSION: Our results suggest that IFN-gamma may k useful as well as safety in the treatment of bronchial asthmatics with high serum IgE level and that in vivo effects of IFN-gamma may be different from its in vitro effects on the regulations of IgE synthesis or the respiratory burst of PMN.

A Case of Bronchopulmonary Atypical Carcinoid Tumor with Liver Metastasis / 결핵

Bronchial carcinoid tumors are uncommon, constituting approximately 5% of all primary lung cancers. Carcinoid tumors belong to the calss of neuroendocrine tumors that consist of cells that can store and secrete neuramines and neuropeptides. Neuroendocrine tumors of the lung include three pathologic types: a low-grade malignancy, the so-called "typical carcinoid", a more aggressive tumor, the "atypical carcinoid" and the most aggressive malignant neoplasm, the small-cell carcinoma. Atypical carcinoid tumor, have a higher malignant potential, is more commonly peripheral than is the typical carcinoid tumor. Histologic features would characterize a carcionoid as hitologically atypical: increased mitotic activity, pleomorphism and irregularity of neuclei with promonent nucleoli, hyperchromatin, and abnormal nuclear-cytoplasmic ratio, areas of increased cellularity with disorganization of architecture, and areas of tumor necrosis. Metastatic involvement of regional lymph nodes and distant organ is common. The prognosis is related to size of the tumor, typical or atypical appearance, endoluminal or extraluminal growth, vascular invasion, node metastasis. Pulmonary resection is the treatement of choice for bronchial carcinoid. We experienced one case of bronchopulmonary atypical carcinoid tumor. In the case, radiologic study showed solitary lung mass with liver metastasis and the level of 5-HIAA was elevated. There was no history of cutaneous flushing, diarrhea, valvular heart disease. The authors reported a case of brochopulmonary atypical carcinoid tumor with review of literatures.