The therapeutic strategy may need to be altered in such patients. (c) 2010 Elsevier Inc. All rights reserved.”
“Endotoxemic shock is associated with approximately 50% incidence of acute kidney injury (AKI) and 70% mortality. Experimental studies indicate that endotoxemia-related AKI is associated click here with both hemodynamic and proinflammatory perturbations. We hypothesize that combined administration of albumin with pentoxifylline may protect against the development of AKI during endotoxemic shock in mice by maintaining the integrity of arterial circulation and exerting anti-inflammatory properties. We tested this hypothesis using an endotoxemic

shock model produced by administering a high dose of lipopolysaccharide (LPS) (15 mg/kg intraperitoneal). LPS-treated mice developed hypotension compared to control mice (mean arterial pressure [MAP] 65.6 +/- 2.2 vs. 85.7 +/- 0.8 mm Hg, p < 0.05). Normal saline did not attenuate LPS-related hypotension (62.7 +/- 2.2 vs. 65.6 +/- 2.2 mm Hg, NS). Pentoxifylline, a phosphodiesterase inhibitor, worsened the LPS-related hypotension (50.7 +/- 6.9 vs. KU 55933 65.6 +/- 2.2 mm Hg, p = 0.15) in a non-significant manner. Albumin alone caused a significant increase in MAP (79.3

+/- 4.7 vs. 62.7 +/- 2.2 mm Hg, p = 0.02), but had a non-significant modest effect on glomerular filtration rate (GFR; 60.8 +/- 24.7 vs. 38.2 +/- 18.2 mu l/min, NS) compared to normal saline. However, the combination of albumin and pentoxifylline profoundly protected GFR (148.6 +/- 28.7 mu l/min, vs. 38.2 +/- 18.2 mu l/min, p < 0.01) as compared to normal saline. The combined administration of albumin and pentoxifylline significantly attenuated the renal iNOS protein expression and increased cardiac output. In summary, neither U0126 molecular weight normal saline nor albumin nor pentoxifylline alone protected against endotoxemic shock-related AKI. However, the combination of albumin and pentoxifylline was effective in preventing AKI during endotoxemic shock. Thus, in endotoxemic shock, a multifactorial approach involving hemodynamic and anti-inflammatory effect may be necessary to decrease AKI.”
“Plant

oils are an important renewable resource, and seed oil content is a key agronomical trait that is in part controlled by the metabolic processes within developing seeds. A large-scale model of cellular metabolism in developing embryos of Brassica napus (bna572) was used to predict biomass formation and to analyze metabolic steady states by flux variability analysis under different physiological conditions. Predicted flux patterns are highly correlated with results from prior C-13 metabolic flux analysis of B. napus developing embryos. Minor differences from the experimental results arose because bna572 always selected only one sugar and one nitrogen source from the available alternatives, and failed to predict the use of the oxidative pentose phosphate pathway.