Favourable effect of K, Mg aspartate on serum proteins in aging rats

Dietary oil modifies the plasma proteome during aging in the rat

Fatty acids and other components of the diet may modulate, among others, mechanisms involved in homeostasis, aging, and age-related diseases. Using a proteomic approach, we have studied how dietary oil affected plasma proteins in young (6 months) or old (24 months) rats fed lifelong with two experimental diets enriched in either sunflower or virgin olive oil. After the depletion of the most abundant proteins, levels of less abundant proteins were studied using two-dimensional electrophoresis and mass spectrometry. Our results showed that compared with the sunflower oil diet, the virgin olive oil diet induced significant decreases of plasma levels of acute phase proteins such as inter-alpha inhibitor H4P heavy chain (at 6 months), hemopexin precursor (at 6 and 24 months), preprohaptoglobin precursor (at 6 and 24 months), and α-2-HS glycoprotein (at 6 and 24 months); antioxidant proteins such as type II peroxiredoxin (at 24 months); proteins related with coagulation such as fibrinogen γ-chain precursor (at 24 months), T-kininogen 1 precursor (at 6 and 24 months), and apolipoprotein H (at 6 and 24 months); or with lipid metabolism and transport such as apolipoprotein E (at 6 and 24 months) and apolipoprotein A-IV (at 24 months). The same diet increased the levels of apolipoprotein A-1 (at 6 and 24 months), diminishing in general the changes that occurred with age. Our unbiased analysis reinforces the beneficial role of a diet rich in virgin olive oil compared with a diet rich in sunflower oil, modulating inflammation, homeostasis, oxidative stress, and cardiovascular risk during aging.

Influence of age and K, Mg aspartate (Cardilan) on murine haemopoiesis

We have studied the effect of age as well as the effect of short-term and long-term intake of K and Mg salts of aspartic acid (Cardilan) on haemopoiesis in ICR mice strain. The cellularity of the bone marrow does not change with aging, but the number of granulocyte-macrophage colony-forming cells (GM-CFC) and also the number of spleen colony-forming units (CFU-S) and erythroid burst-forming units (BFU-E) in two-year-old mice increased in the bone marrow. In two-year-old mice the number of leukocytes decreased in the peripheral blood with aging, mainly as a result of a decrease in mononuclear cells. Short-term drinking (STD) of Cardilan caused increased numbers of CFU-S and BFU-E in bone marrow and increased numbers of reticulocytes in the peripheral blood of one-year old animals (STD/12 months old). In the oldest mice (STD/24) increased weight and cellularity of the spleen and rapid increase of leukocytes and reticulocytes in the peripheral blood was recorded. After long-term drinking (LTD) of Cardilan the number of spleen GM-CFC rose markedly in one-year-old mice (LTD/12) and in two-year-old mice (LTD/24) the number of reticulocytes in the peripheral blood rose. Our results indicate that K and Mg salts of aspartic acid influence erythropoietic activity most widely.