AbstractThe fatty acid compositions of plasma phospholipids and cholesterol esters were measured in 18 pairs of twins discordant for schizophrenia and 20 pairs concordant for schizophrenia. In the twins discordant for schizophrenia the only significant abnormalities were elevations of adrenic (22:4n-6) and docosapentaenoic (22:5n-6) acids in the schizophrenic twins. These fatty acids have also recently been reported to be elevated in brains from schizophrenics. The twins concordant for schizophrenia showed many differences from the normal discordant twins. 22:4n-6 and 22:5n-6 were even more abnormal than in the schizophrenic discordant twins. In addition, linoleic acid was significantly reduced, an abnormality which has been found consistently in other schizophrenic populations. These observations are consistent with the concept that unsaturated fat metabolism may be abnormal in schizophrenia.
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