In experiments on the isolated rat hearts we investigated the influence of phospholipid membrane modification by omega-3 polyunsaturated fatty acids (PUFAs) on the heart reactivity to adrenergic influences, myocardial ultrastructure and peroxidation processes under the immobilization stress. It was shown that omega-3 PUFAs reduced ultrastructural changes in the heart, limited lipid peroxidation and attenuated inotropic response of the heart to exogenous norepinephrine.
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