Thymic factor-induced reduction of pulmonary metastases in mice with FSA-1 fibrosarcoma

1988 ◽  
Vol 6 (1) ◽  
pp. 17-25 ◽  
Author(s):  
V. J. Tomazic ◽  
C. R. Sacasa ◽  
A. Loftus ◽  
C. S. Suter ◽  
G. E. Elias
Keyword(s):  
Pulmonary Metastases ◽  
Thymic Factor

Electron microscope study of the secretory activity of epithelial cells in embryonic thymus

1990 ◽  
Vol 48 (3) ◽  
pp. 382-383
Author(s):  
H. Alasam
Keyword(s):  
Cell Differentiation ◽  
T Cell ◽  
Epithelial Cells ◽  
Electron Density ◽  
Secretory Activity ◽  
T Cell Differentiation ◽  
High Electron ◽  
Transmission Electron ◽  
Medullary Epithelial Cells ◽  
Thymic Factor

The possibility that intrathymic T-cell differentiation involves stem cell-lymphoid interactions in embryos led us to study the ultrastructure of epithelial cell in normal embryonic thymus. Studies in adult thymus showed that it produces several peptides that induce T-cell differentiation. Several of them have been chemically characterized, such as thymosin α 1, thymopoietin, thymic humoral factor or the serum thymic factor. It was suggested that most of these factors are secreted by populations of A and B-epithelial cells.Embryonic materials were obtained from inbred matings of Swiss Albino mice. Thymuses were disected from embryos 17 days old and prepared for transmission electron microscopy. Our studies showed that embryonic thymus at this stage contains undifferentiated and differentiated epithelial cells, large lymphoblasts, medium and few small lymphocytes (Fig. 5). No differences were found between cortical and medullary epithelial cells, in contrast to the findings of Van Vliet et al,. Epithelial cells were mostly of the A-type with low electron density in both cytoplasm and nucleus. However few B-type with high electron density were also found (Fig. 7).

MRI Chest Assessment of Tumor Response Post Microwave Ablation of Pulmonary Metastases

2013 ◽  
Vol 185 (S 01) ◽  
Author(s):  
N Nour-Eldin Mohammed ◽  
N Nguib ◽  
S Zangos ◽  
T Lehnert ◽  
T Gruber-Rouh ◽  
...  
Keyword(s):  
Microwave Ablation ◽  
Tumor Response ◽  
Pulmonary Metastases ◽  
Response Post

Radioiodide Treatment of Pulmonary Metastases of Differentiated Thyroid Cancer

1979 ◽  
Vol 18 (02) ◽  
pp. 86-90 ◽  
Author(s):  
V. Zamrazil ◽  
D. Pohunková ◽  
S. Röhling ◽  
J. Němec
Keyword(s):  
Thyroid Cancer ◽  
Bone Metastases ◽  
Differentiated Thyroid Cancer ◽  
Pulmonary Metastases ◽  
Survival Rates ◽  
Younger Patients ◽  
131I Uptake ◽  
Young Subjects ◽  
Radioiodide Therapy ◽  
Diagnosis Of Thyroid Cancer

Pulmonary metastases were found in 123 out of 840 patients with thyroid cancer between 1955-1977. 87 patients with pulmonary metastases of differentiated cancer were studied in detail, including an evaluation of prognostically important factors. In 66 of them, the induction of 131I uptake in metastases was attempted, in half of them successfully. Uptake was achieved more frequently in younger subjects, in papillary cancers and in patients with fine pulmonary metastases on chest films. Survival (not corrected for age) was evaluated 10 and 15 years following the diagnosis of thyroid cancer and was found to be 29,1 % and 12,2%, respectively. Significantly higher survival rates were seen in younger patients, in patients with the fine type of pulmonary metastases, in the absence of bone metastases and, particularly, in patients with induced 131I uptake in metastases. Papillary cancers were found to have higher survival rates in males and in young subjects only, in the whole group the survival rates were independent of either microscopic type or sex. It is believed that biologic behaviour of distant (pulmonary) metastases may be influenced by radioiodide therapy.

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