Protein levels (Western blot) of the major glucose transporter isoform (GLGT4) were measured in skeletal muscles (quadriceps femoris) of an animal model of human metabolic syndrome X, i.e. the hereditary hypertriglyceridaemic (HTG) insulin-resistant rats fed various diets. The results were compared with the data obtained in normal Wistar rats which underwent the identical protocol. In HTG rats fed the basal diet (B) or high- sucrose diet (HS) (known to induce hypertriglyceridaemia and to impair insulin action), a decrease of GLGT4 protein levels (B: Control 100±3 vs HTG 46±5 %, p<0.005; HS: Control 80±9 vs HTG 49±3 %, p<0.005) was observed. Furthermore, marine Pish oil (FO) rich in n-3 polyunsaturated fatty acids (PGFA), added to the basal diet (30 wt % of n-3 PGFA) reduced the GLGT4 protein levels (B: 100±3 vs B+FO: 42±4 %, p<0.005) in control rats to values similar to those found in HTG rats (B: 46±4 %). However, dietary FO did not have any effect in HTG rats (49±3 %). Feeding the high-sucrose diet supplemented with FO to both the control and HTG rats was followed by a further decrement of GLGT4 protein (Control 15±5 vs HTG 14±4%). In conclusions, a) the hereditary HTG rats had by about 50 % lower GLGT4 protein levels in the quadriceps femoris muscle in comparison to normal Wistar rats; b) high-sucrose diet or raised dietary intake of n-3 PGFA did not further alter the number of glucose carriers in quadriceps femoris muscle in HTG rats and c) feeding the high-sucrose diet with higher proportion of n-3 PGFA was associated with an additional reduction of the GLGT4 protein level in this muscle.
Our previous study showed that a diet enriched with 400 g of carp per week improved plasma lipids in subjects after aortocoronary bypass (CABG). The aim of the present study is to determine whether the differe nt carp farming systems have an impact on the effects of carp meat in secondary cardiovascula r prevention. We examined 3 groups of patients after CABG over a 4-week period of spa treatment (108 persons, 73 males, 35 females, age over 60 years). We found no differences in baseline values of blood pressure or plasma lipids. The patients were given a standard spa diet (controls; N=36) or a diet enriched of 400 g of car p meat per week, enriched omega-3 (N=37) or cereal carp (N=35). Plasma lipid parameters were examined at start and after 4 weeks in a routine laboratory setting. Group consuming omega-3 carp showed the largest decline in total cholesterol, LDL ch olesterol, triglycerides and an increase in HDL cholesterol (all p<0.01). We found that carp meat from the two production systems showed significantly different effects on plasma lipids. Further t rials should be performed to clarify the exact causes of the differences., J. Mraz, T. Zajic, P. Kozak, J. Pickova, P. Kacer, V. Adamek, I. Kralova Lesna, V. Lanska, V. Adamkova., and Obsahuje bibliografii