Studies on the compound lipids from X-ray irradiated animal,2.

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<p>For the purpose to clarify the causes of X-ray disturbances a series of experiments have been conducted on biological and biochemical properties of compound lipids extracted from normal and X-ray irradiated rabbit organs with a special reference to the P³²-labeled compound lipids uptake, inhibitory action to L cell proliferation and uncoupling of oxidative phosphorylation, and the following results have been obtained. The compound lipids (lysophosphatide rich fraction) isolated from the X-ray irradiated rabbit organ have been found to possess a strong hemolytic action and also an action to inhibit the cell proliferation as well as to accelerate the respiration of the mitochondria in the rabbit liver and spleen. It has also been proven that they act as to induce a marked swelling of mitochondria, to impede the formation of high energy phosphate as well as to act as an uncoupler of oxidative phosphorylation in vivo. In the test to see the uptake of P³²-labeled compound lipids by various organs, a marked uptake has been observed in spleen, bone marrow, and liver of both irradiated and non-irradiated groups. Further, the uptake of P³²-labeled compound lipids in the rabbits given intravenous injections of compound lipid fraction for 30 consecutive days previously has been found to be greatest in pancreas followed by bone marrow, spleen, liver in the order mentioned in male group, whereas it is greatest in spleen, followed by liver and bone marrow in the female group. With these results the discussion was conducted concerning the relation between the lipid metabolism and X-ray disturbances.</p>

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