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At least 127 records · Page 7Linked to original sources
PubMed1981

Effect on blood lipids and haemostasis of a supplement of cod-liver oil, rich in eicosapentaenoic and docosahexaenoic acids, in healthy young men.

1. Twelve healthy male subjects took a daily supplement of 20 ml of cod-liver oil for 6 weeks. This provided 1.8 g of eicosapentaenoic acid (20:5 omega 3) and 2.2 g of docosahexaenoic acid (22:6 omega 3). The effects of the supplement on blood lipids, haemostatic variables, bleeding time and plasma vitamin A and carotene were studied. In seven subjects platelet aggregation induced by adenosine 5'-pyrophosphate (ADP) was also studied. 2. The proportions of 20: 5 omega 3 and 22: 6 omega 3 in platelet and erythrocyte phosphoglycerides were substantially increased by the supplement mainly at the expense of omega 6 polyunsaturated fatty acids. 3. Mean plasma triglyceride concentrations were reduced and those of high-density-lipoprotein (HDL) cholesterol were increased by the supplement. 4. The mean bleeding time was significantly prolonged after 3 weeks of taking the supplement, but had returned to the presupplementation value 5 weeks after withdrawal of the supplement. 5. The maximum estimated response to platelet aggregation induced by ADP was increased by the supplement. 6. The mean levels of antithrombin III (immunological) and blood pressure were lower at the end of the period of supplementation and remained so 5 weeks after withdrawal of the supplement. No significant changes in other variables were noted.

Adult↗
PubMed1993

Effects of cod liver oil on lipids and platelets in males and females.

Thirty-four healthy non-smoking subjects (20 men and 14 women) were given 25 ml cod liver oil (CLO) daily as dietary supplement for 8 weeks in a controlled cross-over study. Prior to intervention, women had significantly higher serum total (P < 0.05) and high density lipoprotein (HDL) (P < 0.001) cholesterol values, higher platelet counts (P < 0.05) and lower thromboxane B2 (TxB2) generation (P < 0.01) in response to collagen stimulation in platelet-rich plasma (PRP) than men. Before intervention, no gender differences in platelet aggregation were observed. Following CLO intervention, serum triglycerides were reduced by 0.21 +/- 0.09 mmol/l (P < 0.05) in men. LDL cholesterol increased in men by 0.28 +/- 0.12 mmol/l (P < 0.05), while the values in women decreased insignificantly. The response in LDL cholesterol to CLO supplementation differed significantly between genders (P < 0.05). HDL cholesterol was not altered in any group. Mean platelet volume (MPV) increased by approximately 6% in both sexes (P < 0.01). After CLO intake, platelet sensitivity to collagen in PRP decreased in men only (P < 0.01), and the response was significantly different from that in women (P < 0.05). Thromboxane B2 generation following platelet aggregation in PRP was equally decreased by CLO. Our findings indicate sex differences in the response to CLO regarding LDL cholesterol and platelet sensitivity to collagen in PRP.

Adult↗
PubMed1989

Effects of dietary supplementation with cod liver oil on monocyte thromboplastin synthesis, coagulation and fibrinolysis.

In a controlled trial 40 healthy persons (20 men and 20 women) were tested before and after a daily supplement with 25 ml cod liver oil for 8 weeks. The diet increased the eicosapentaenoic acid (20:5 n-3) content in serum and monocytes four- to five-fold whereas the arachidonic acid (20:4 n-6) content decreased 10-20% in both serum and monocytes. Stimulation of blood with a low concentration of lipopolysaccharides (LPS) revealed a 40% suppression of LPS-induced thromboplastin synthesis in the monocytes after 8 weeks of CLO intake. In the same LPS stimulation system, men were found to generate significantly more thromboxane B2 than women (4.9 ng ml-1 versus 3.4 ng ml-1). After the CLO supplementation for 8 weeks the thromboxane B2 was reduced by a mean of 70% in women and 60% in men. Factor VII and fibrinogen appeared to be unaltered by CLO intake. Determination of whole blood clot lysis time and tissue plasminogen activator (t-PA) did not indicate any significant influence of n-3 fatty acids on fibrinolysis.

Adult↗
PubMed1986

Acute effects of dietary cod liver oil and cream on plasma lipoproteins.

Plasma lipoprotein concentration and composition of 6 healthy subjects were studied before and 3 h after a fatty meal (900 kcal) consisting of either cream (mainly saturated fatty acids) or cod liver oil (CLO; rich in n-3 polyunsaturated fatty acids). The plasma triglyceride concentration was increased after both meals. This was caused by an increase in both chylomicron and very-low-density lipoprotein (VLDL) triglycerides. Plasma total cholesterol was unchanged. The cholesterol content was also increased in low-density lipoproteins and in VLDL after cream intake, but was reduced in high-density lipoproteins (HDL), whereas no changes were observed in these fractions after CLO. The fatty acid composition of the diet was reflected in the plasma and in the chylomicron fraction. Both fatty meals reduced the relative concentration of plasma linoleic acid. Fatty acid composition in HDL suggested dietary fatty acid transfer from the chylomicrons and VLDL to the HDL after CLO, but not after the cream diet. The results suggest that in the postprandial state the fatty acid transfer between the triglyceride-rich lipoproteins and HDL depends on the quality of the fatty acids and that the n-3 polyunsaturated fatty acid may increase such transfer.

Animals↗
PubMed1988

Malondialdehyde excretion by subjects consuming cod liver oil vs a concentrate of n-3 fatty acids.

Urinary malondialdehyde (MDA), an indicator of lipid peroxidation in the diet and in the tissues, was determined in human adults consuming a supplement of n-3 fatty acids derived from a pharmaceutical grade of cod liver oil (CLO) without added antioxidants vs a concentrate of n-3 acids containing dodecyl gallate and vitamin E. MDA excretion increased immediately in the subjects consuming CLO but remained unchanged in those ingesting the concentrate for 50 days. The increase in the subjects taking CLO was attributable to MDA in the oil. The results indicate that consuming unstabilized fish oils as a source of n-3 fatty acids may entail exposure to potentially toxic products of lipid peroxidation.

Adult↗
PubMed1986

Influence of a cod liver oil diet in healthy and insulin-dependent diabetic volunteers on fatty acid pattern, inhibition of prostacyclin formation by low density lipoprotein (LDL) and platelet thromboxane.

Ten healthy and twenty diabetic volunteers (type 1) received 15 capsules (à 450 mg) cod liver oil for 2 weeks daily in addition to a "normal" diet. The levels of eicosapentaenoic acid in the plasma phospholipids of both groups were increased after the treatment. The inhibition of the prostacyclin formation by LDL was diminished when the LDL was isolated after the treatment in comparison to LDL taken in the same concentration and from the same donors before it. The thromboxane B2 (TXB2) synthesis capacity of clotting whole blood, thrombin-induced TXB2 formation by platelets as well as the 15(S)-hydroxy-11 alpha,9 alpha-epoxymethano-5Z, 13E-prostadienoic acid-induced platelet aggregation were not altered by the treatment in healthy volunteers, whereas in diabetics the TXB2 formation capacity of clotting whole blood was decreased after the treatment in comparison with before it.

Adult↗
PubMed1983

Hemolytic uremic syndrome; treatment with plasma, vitamin E and cod liver oil.

A 21 month old male child with severe hemolytic uremic syndrome was treated with peritoneal dialysis and a two blood volume exchange transfusion. As renal function had recuperated and platelet count had risen to 393,000/mm3, ,neurological deterioration occurred and complete blindness developed. A complete recovery was observed with a treatment regimen made of fresh frozen plasma, vitamin E and cod liver oil.

Blindness↗
PubMed1999

Long-chain L-3-hydroxyacyl-coenzyme A dehydrogenase deficiency neuropathy: response to cod liver oil.

Docosahexaenoic acid (DHA) deficiency has recently been documented in several children with long-chain L-3-hydroxyacyl-coenzyme A dehydrogenase deficiency (LCHADD). We studied a 13-year-old boy with LCHADD who had limb girdle myopathy, recurrent myoglobinuria, and progressive sensorimotor axonopathy with demyelination. At 11 years of age, he was started on cod liver oil extract, high in DHA content. Over 12 months, he demonstrated a marked clinical recovery. Nerve conduction studies (NCS) demonstrated reappearance of previously absent posterior tibial and peroneal nerve responses and the amplitudes on motor ulnar and median NCS markedly increased from 7- to 14-fold, respectively.

3-Hydroxyacyl CoA Dehydrogenases↗
PubMed1995

A preliminary study on the effect of dietary supplementation with cod liver oil on the polyunsaturated fatty acid composition of boar semen.

Eight mature Norwegian Landrace boars, of proven fertility and in routine semen production for AI, were fed individually with the same basic diet for 9 weeks. One group of 4 animals served as the control, the remaining 4 boars received a daily supplement of 75 ml cod liver oil (CLO-group). Fifteen consecutive semen samples were collected from each boar. The fatty acid composition of the semen was determined, and the content of the 15 most numerous fatty acids with a chain length longer than 12 carbon atoms was followed over time. In both groups, the proportion of 16:1n-7 decreased significantly, while 16:0 and 22:6n-3 (DHA) increased. By the end of the experiment, DHA had tended to increase and 22:5n-6 to decrease to a greater extent in the CLO-group. A significant difference between the groups was seen for one n-6 PUFA (22:4n-6), which remained unchanged in the control group but decreased in the CLO-group. No change was seen in docosapentaenoic acid (22:5n-3) and eicosapentaenoic acid (20:5n-3) was not found in any sample. These results indicate that CLO supplementation affects the fatty acid composition of boar semen. There were no significant differences in the non-return rates (4-25 days) between the two groups before, during or after the experiment.

Animals↗