Effect of the dietary fatty acid component on the release of 14C-taurocholate, 14C-bilirubin, alkaline phosphatase, and aspartate transaminase by isolated rat liver cells.
Rats were fed liquid diets for 7 days containing either triolein or Liposyn, which is rich in linoleic acid, as fat sources, and liver cell suspensions were prepared following collagenase perfusion. The release from isolated cells of alkaline phosphatase and aspartate transaminase during a 3-hr incubation did not differ. The uptake and release of 14C-taurocholate during a brief incubation was lower but not significantly in Liposyn-fed rats (0.1 greater than p greater than 0.05): the uptake was 9.74 +/- 1.58 vs 16.7 +/- 3.3 nmol/mg protein in triolein-fed rats; the release was 3.17 +/- 0.65 vs 5.35 +/- 1.01 nmol/mg protein in triolein-fed rats. The uptake of 14C-aminolevulinic acid was similar in both groups, but release of 14C-bilirubin during a 30-min incubation was 5,420 +/- 1010 in the Liposyn group vs 12,030 +/- 2,200 dpm/mg protein in the triolein group (p = 0.02). It is concluded that a diet high in linoleic acid decreases bilirubin release in isolated liver cells consistent with the ability of this diet to cause cholestasis in vivo.
D000469:Alkaline Phosphatase / Q000378:metabolism; D000818:Animals; D001219:Aspartate Aminotransferases / Q000378:metabolism; D001663:Bilirubin / Q000378:metabolism; D004041:Dietary Fats / Q000008:administration & dosage*; D004655:Emulsions; D005217:Fat Emulsions, Intravenous / Q000008:administration & dosage*; D054709:Lecithins; D008099:Liver / Q000378:metabolism*; D051381:Rats; D012450:Safflower Oil; D013024:Soybean Oil; D013656:Taurocholic Acid / Q000378:metabolism; D014304:Triolein / Q000008:administration & dosage*
D004041:Dietary Fats; D004655:Emulsions; D005217:Fat Emulsions, Intravenous; D054709:Lecithins; C031435:safflower oil, soybean oil, lecithin emulsion; D014304:Triolein; D013656:Taurocholic Acid; D013024:Soybean Oil; D012450:Safflower Oil; D001219:Aspartate Aminotransferases; D000469:Alkaline Phosphatase; D001663:Bilirubin