Browsing by Subject "Starvation"

Now showing 1 - 4 of 4
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    Changes in lipid composition of different tissues of common octopus (Octopus vulgaris) during short-term starvation
    (Wiley, 2013-07-09) Cerezo Valverde, Jesús; Serra Llinares, Rosa M.; García García, Benjamín; Sánchez Morillo-Velarde, María Piedad; Biología Celular e Histología
    In this work, we study the variations in concentration (mg 100 g−1 dry weight) and total content (mg individual−1) of different lipid classes in muscle and the digestive gland of Octopus vulgaris during an 8-day starvation period. In all the samples analysed, polar lipids (PL) predominated in muscle (267.3–337.2 mg 100 g−1) compared with neutral lipids (66.9–104.7 mg 100 g−1). A significant positive tendency was observed in muscle for the content and concentration of monoglycerides as a consequence of starvation (P < 0.05). Furthermore, a higher cholesterol (CHO) content was detected in this tissue after the fourth day of starvation compared with the fed animals (P < 0.05). Neutral lipids predominated in the digestive gland (12 958–14 151 mg 100 g−1) compared with PL (3157–6517 mg 100 g−1), with triglycerides, free fatty acids and monoglycerides being the major lipid classes. The concentration of PL and monoglycerides showed a positive trend with starvation, while the triacylglycerol showed a negative tendency (P < 0.05). The results suggest that triglycerides and CHO are transported simultaneously from the digestive gland to the muscular tissues during starvation and the preferential use of PL and CHO during growth phases. It was estimated that lipids contributed 26% of the energy costs of the animals during starvation, mainly in the form of triglycerides from the digestive gland.
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    Con el hambre a las puertas: el abastecimiento de Valencia durante la Guerra de los Dos Pedros (1356-1366).
    (2018-02-27) Sanahuja Ferrer, Pablo
    Este artículo pretende contribuir a la corriente de renovación intelectual que en los últimos años se ha abierto con la llamada nueva historia política. Específicamente, pretende abordar la problemática del hambre en una ciudad durante un conflicto bélico (la Guerra de los Dos Pedros) y, sobre todo, las políticas que sus dirigentes aplicaron y si estas fueron efectivas o no .
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    Evolution of Biometric Indices and Plasma Metabolites During Prolonged Starvation in European Sea Bass (Dicentrarchus labrax, L.)
    (1997) Echevarría, Germán; Martínez-Bebia, Manuel; Zamora, S.; Tecnología de Alimentos, Nutrición y Bromatología
    Taking as criteria plasmatic urea profiles, and percentage losses over time in weight and in condi tion factor, the process of starvation (up to 150 days) in European sea bass (Dicentrarchus labrax) divides into two phases. In the first phase (up to 50 days), there is no variation in the concentration of urea, the percentage losses in condition factor are greater than those in weight, intestinal fats are exhausted, premature involution of gonadal tissue occurs, there is no variation in the chemical composition of white muscle, and proteinaemia decreases. In the second phase, there is an increase of 237% in the concentration of urea, percentage losses in weight predominate over those in the condition factor, the moisture in white muscle increases, while ash reduces, and proteinaemia returns to its initial values. Of all the plasma-free amino acids measured, only Arginine falls dramatically during the onset of starvation and, after stabilizing, there is the significant increase in urea men tioned above. Plasma concentration of NH3 remained constant throughout the experimental period. Significant variations in plasmatic Alanine were not detected. Concentrations of plasma Taurine remained high during the whole of the second phase. comp biochem physiol 118A;1:111–123, 1997.  1997 Elsevier Science Inc.
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    Relationships between variable time, percentage of food restriction and liver histology: which alternative is the best for non-alcoholic fatty liver disease (NAFLD) prevention?
    (Universidad de Murcia. Departamento de Biología Celular e Histología, 2016) Makovicky, Peter; Tumova, Eva; Volek, Zdenek; Makovicky, Pavol; Sedlacek, Radislav
    The objective of this study was to analyse the hepatic effects of food restriction in an experimental rabbit model. The study comprised 105 rabbits divided into 6 groups. The two control groups were fed ad libitum (ADL) during the entire experiment (C1 and C2). The experimental groups were restricted between 42-49 days of age, where the rabbits received 50g (R1) or 65g (R2) of food per rabbit per day. Others were restricted between 35-42 days of age, where the rabbits received 50g (R3) or 65g (R4) of food per rabbit per day. For liver analysis, 5 rabbits per group were slaughtered at the ages of 49, 56, 63, 70 days from the R1, R2 groups and at 42, 49, 70 days from the R3, R4 groups. All animals from the C1 and C2 groups developed steatosis with inflammation. Animals from the R1 and R2 groups developed steatosis without inflammation while in the R3 and R4 groups steatosis was not visible. In C1 and C2 groups we observed mostly fatty deposit accumulations while in the R1, R2, R3 and R4 groups, more PAS-positive material accumulations were visible. Liver steatosis correlated with inflammation development and interstitial tissue growth. These results can be used in clinical praxis as signs of NAFLD progression. Early food restriction had intense effects on liver morphology and it seems promising that similar approaches could be applied as preventive treatment for NAFLD development.