Abstract
The re-establishment of the blood supply to a formerly ischemic liver lobe, before the "point of no return" of the tissue is reached, induces a series of changes in protein and RNA metabolism that are functional to the repair of the damage suffered by the cells. Among these events there is the increase in synthesis of a group of proteins known as heat-shock (or stress) proteins, which are also induced in liver cells by different kinds of oxidative stress. The increase in synthesis of these proteins is largely due to the activation of their genes: some of these genes are also activated in cells stimulated to grow. These observations suggest a link between oxidative stress, repair of cell damage and cell multiplication.
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