RESUMEN
From the viewpoint of atherosclerosis prevention, it is important to examine the effects of exercise on the lipoprotein fraction in the postprandial state. The purpose of this study was to investigate the effects of a single period of low-intensity exercise on serum lipoprotein triacylglycerol (TG) after an oral fat load (50g/body surface area) as exogenous TG. Seven normolipidemic men aged 23.1±1.1 years (mean ± SEM) took part in two trials. The subjects were all young students at a university graduate school. In the exercise trial (Ex), they exercised for 1.5 h on a bicycle ergometer at 35-40% of their maximal oxygen uptake, starting 2 h after ingestion of the fat, and then rested for a further 2 h. In the control trial (Co), they rested for 5.5 h after ingestion of the fat. Lipoprotein and lipid levels were measured in venous blood taken during the fasted state and at different intervals between the two trials for 5.5 h after the fat load. Serum total TG and high-density lipoprotein (HDL) TG decreased significantly in Ex from 3.5 to 5.5h (p<0.05, p<0.01) in comparison with Co. These results indicate that a single period of low-intensity exercise reduces exogenous serum total TG and HDL-TG.
RESUMEN
The fluoroscopy-guided fine needle aspiration biopsy has been gaining widespread acceptance as a rapid and effective method to make a pre-operative diagnosis of mediastinal tumors including thymoma, malignant lymphoma, and metastatic carcinoma. Although thymoma is a most common tumor of the superior mediastinum, most cytopathologists are not experted in cytologic diagnosis of this tumor because of limited experience. In order to define the diagnostic cytologic features of thymoma, we have retrospectively reviewed imprinting smears and corresponding tissue sections from four cases of this tumor. All cases revealed an apparent biphasic pattern of epithelial cell clusters and lymphocytes with occasional branching capillary fronds extending from three dimensional epithelial cell clusters. Epithelial cell clusters predominated in one case and lymphocytes in two cases. Mixed epithelial cell and lymphocyte type represented in one of four cases. In the lymphocyte predominant type, the presence of epithelial cell clusters and small mature lymphocytes are helpful features to differentiate from a malignant lymphoma.