The aim of this study was to delineate the mechanisms by which varying periods of starvation decrease lipoprotein lipase (LPL) activity in rat adipose tissue. LPL mRNA levels and rates of LPL synthesis, degradation and secretion were compared in adipocytes from male rats that had been fed or starved for 1 or 3 d. The decreased LPL activity after 3 d of starvation (-76%) was explained mainly by ...

Autophagy is a highly-conserved cellular degradation and recycling system that is essential for cell survival during nutrient starvation. The loss of viability had been used as an initial screen to identify autophagy-defective (atg) mutants of the yeast Saccharomyces cerevisiae, but the mechanism of cell death in these mutants has remained unclear. When cells grown in a rich medium were transfe...

Namazi F., Omidi A., Abbasi S., Afsar M., Honarmand M. & Nazifi S. 2016. Starvation and refeeding in rats: effect on some parameters of energy metabolism and electrolytes and changes of hepatic tissue. Pesquisa Veterinária Brasileira 36(Supl.1):101-105. Department of Pathobiology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran. E-mail: [email protected] Regarding the importa...

Endogenous processes such as biomass decay and intracellular polymers degradation of polyphosphate-accumulating organisms (PAOs) and glycogen-accumulating organisms (GAOs) were investigated. Cultures enriched in Accumulibacter (a well known PAO) or Competibacter (a well known GAO) were subjected to 21 and 26 days of alternating anaerobic/aerobic conditions respectively. The main energy source f...

Synchronization of cell division in a variety of microorganisms has been achieved by temperature shifts or by starvation. Two reports exist which mention svnchronization of the budding process in yeast by starvation (Beam et al., 1954; Ogur et al., 1953). In both cases, the demonstration of synchronization was incidental to the primary purpose of the experiments performed, and was therefore not...

1. The synthesis of ascorbic acid in rat-liver extracts is impaired during starvation, and more from glucuronolactone and glucuronate than from gulonate and gulonolactone. 2. The formation of xylulose from gulonate and from gulonolactone is greatly enhanced during starvation, whereas it is decreased from glucuronolactone and from glucuronate. 3. The activity of the enzymes of the glucuronic aci...

We evaluated the effect of starvation on anaesthetic solubility in tissues involved in lipid transport (blood) or metabolism (liver) and in a tissue not involved in either (brain). The liver/gas partition coefficients of isoflurane, enflurane, halothane and methoxyflurane in rats increased by 15-20% after 6 h of starvation and reached a maximum increase of 35-42% after 24 h of starvation. After...

Phosphate is an essential macronutrient in plant growth and development; however, the concentration of inorganic phosphate (Pi) in soil is often suboptimal for crop performance. Accordingly, plants have developed physiological strategies to adapt to low Pi availability. Here, we report that typical Pi starvation responses in Arabidopsis are partially dependent on the strigolactone (SL) signalin...