Mitotic activity of the kidney undergoing compensatory hypertrophy at high altitudes

1970 ◽  
Vol 70 (6) ◽  
pp. 1424-1426
Author(s):  
A. A. Braun ◽  
F. Kh. Sharipov
Keyword(s):  
Mitotic Activity ◽  
Compensatory Hypertrophy ◽  
High Altitudes

scholarly journals SEQUENTIAL CHANGES IN CLASSES OF RNA DURING COMPENSATORY GROWTH OF THE KIDNEY

1967 ◽  
Vol 126 (1) ◽  
pp. 1-13 ◽  
Author(s):  
Ronald A. Malt ◽  
Walter L. Miller
Keyword(s):  
Proximal Tubule ◽  
Mitotic Activity ◽  
Compensatory Growth ◽  
Compensatory Hypertrophy ◽  
Kidney Cells ◽  
Mrna Synthesis ◽  
Proximal Tubule Cells ◽  
Tubule Cells ◽  
Second Peak

The synthesis of nuclear precursors of rRNA and of cytoplasmic mRNA has been estimated in mouse kidneys following contralateral nephrectomy. 1. The production of nuclear rRNA parallels mitotic activity in the proximal tubule cells. Its peak is 2 days after nephrectomy; there may be a second peak at 8 days. 2. The production of mRNA is almost the reciprocal of rRNA production. It is least at 2 days and most at 4 days after nephrectomy. It may also decrease immediately after nephrectomy. 3. Growing kidney cells may build a store of ribosomes before they elaborate mRNA. The sequential relation between rRNA and mRNA synthesis raises the possibility that production of rRNA could regulate the production of mRNA and that the stimulus to compensatory hypertrophy might need to act only long enough to set into motion the machinery for making rRNA, either directly or as a consequence of exhausting mRNA.

An adrenocortical oncocytoma with unusual mitochondrial inclusions and cytoplasmic crystals

1994 ◽  
Vol 52 ◽  
pp. 250-251
Author(s):  
W.T. Gunning ◽  
G.D. Haselhuhn ◽  
E.R. Phillips ◽  
S.H. Selman
Keyword(s):  
Adrenal Gland ◽  
Salivary Glands ◽  
Mitotic Activity ◽  
Diagnostic Criteria ◽  
Vascular Invasion ◽  
Benign Neoplasm ◽  
Benign Tumors ◽  
Nuclear Morphology ◽  
Case Presentation ◽  
Microscopic Evidence

Within the last few years, adrenal cortical tumors with features concordant with the diagnostic criteria attributed to oncocytomas have been reported. To date, only nine reported cases exist in the literature. This report is the tenth case presentation of a presumptively benign neoplasm of the adrenal gland with a rare differentiation. Oncocytomas are well recognized benign tumors of the thyroid, parathyroid, and salivary glands and of the kidney. Other organs also give rise to these types of tumors, however with less frequency than the former sites. The characteristics generally used to classify a tumor as an oncocytoma include the following criteria: the tumor is 1) usually a solitary circumscribed mass with no gross nor microscopic evidence of metastasis (no tissue nor vascular invasion), 2) fairly bland in terms of mitotic activity and nuclear morphology, and 3) composed of large eosinophillic cells in which the cytoplasm is packed full of mitochondria (Figure 1).

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