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Thyroid hormones (TH) are believed to participate in adaptation of the heart to dietary caloric restriction (CR). The effect of CR on cardiac thyroid hormone receptors α and β (TRα and TR β) has been hitherto insufficiently investigated, however, and with respect to the impact of CR on cardiac type 2 and 3 deiodinases (D2 and D3), we have not found any literature data. The aim of this study was to...
The joint effects of energy restriction and age on adrenal glucocorticoid synthesis, liver signalling and liver thyroid hormone metabolism were examined. Adrenal type 1 11β-hydroxylase expression was chosen as a marker of adrenal steroidogenesis, liver 11β-hydroxysteroid dehydrogenase 1 and glucocorticoid receptor proteins as measures of glucocorticoid signalling, and liver type 1 and 3 deiodinase...
The texture, rheological properties and myofibre characteristics of semimembranosus muscles of four different species: wild boar (Sus scrofa), deer (Cervus elaphus), roe-deer (Capreolus capreolus), and fallow-deer (Dama dama) shot at 18 months during winter were compared. The muscle texture and rheological properties were determined with the TPA and relaxation tests, performed with an Instron 1140...
Muscle fibre size and characteristic, perimysium thickness as well as texture and rhelogical properties of selected muscles (m. biceps femoris [BF], m. semimembranosus [SM], m. semitendinosus [ST], and m. quadriceps femoris [QF]) of deer of different carcass weight (50 ± 2 and 100 ± 3 kg SD) have been compared. Perimysium thickness, muscle fibre cross-section area and percentage of different fibre...
Changes in texture, structural elements and functional properties of ST (m.semitendinosus) of pure breed BW cattle and their crosses with Charolaise (Cha), Marchigiana (Mar), Piemontese (Pie) and Chianina (Chi) beef cattle subjected to massaging were followed. Of all the groups of animals tested, the most delicate histological structure (the lowest fibre cross-section area, the thinnest perimysium...
Muscles of Pietrain, Duroc and PLW x PL pigs show differences in structure, texture and rheological properties. The muscles that showed higher: hardness, springiness, gumminess, viscosity, and lower chewiness were characterised by thicker connective tissue (both peri- and endomysium), a higher muscle fibre cross-section area and a lower amount of intramuscular fat. Those muscles were also the least...
The texture and histology of selected muscles (m. longissimus dorsi, m. quadriceps femoris, m. biceps femoris, and m. semimembranosus) of piglets and wild boar juveniles were compared. The muscle texture was determined with the TPA test performed with an Instron 1140 apparatus. Structural elements (muscle fibre cross-section area, peri- and endomysium thickness, area of intramuscular fatty tissue)...
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