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In the context of the chem. of potentially prebiol. natural products it would be important to know whether, from a chem. point of view, glycolaldehyde phosphate could be considered as a potentially prebiol. natural material. In this connection, the reactio ...
In recent years a vast array of experimental evidence has indicated the presence of functional receptors for neurotransmitters on nonneuronal cells, in particular astrocytes. The two neurotransmitters vasoactive intestinal peptide (VIP) and noradrenaline ( ...
Cytokines can be produced within the nervous system by various cell types, including astrocytes, which secrete them in response to pathological processes such as viral infections. Astrocytes are known to play an important role in the homeostasis of the ner ...
Glucose is the main fuel for energy metabolism in the normal human brain. It is generally assumed that glucose transport into the brain is not rate-limiting for metabolism. Since brain glucose concentrations cannot be determined directly by radiotracer tec ...
Yeasts degrade glucose through different metabolic pathways, where the choice of the pathway is dependent on the nature of the limitation in the various substrates. When oxygen is limiting in addn. to glucose, yeasts often grow according to a mixt. of oxid ...
The prodn. of acetate from the fermn. of lactate by Gluconobacter oxydans was studied. Batch expts. showed that glucose was the preferred substrate compared to lactate. A fed-batch culture was fed with a mixt. of glucose and lactate followed by periodic ad ...
The time between i.v. injection of a glucose bolus and the time the glucose concn. peaked in the s.c. tissue was measured in pentobarbital-anesthetized rats with implanted 290-mm-diam. amperometric sensors. Boluses of 100, 200, and 400 mg/kg body wt. were ...
Aerobic chemostat cultures of Saccharomyces cerevisiae were performed under carbon-, nitrogen-, and dual carbon- and nitrogen-limiting conditions. The glucose concn. was kept const., whereas the ammonium concn. was varied among different expts. and differe ...
Heat produced by hybridoma suspension cultures was continuously monitored in a 2-L heat-flux calorimeter. Heat measurements reflected changes in the metabolic state of the culture under different aeration conditions. A highly anaerobic metab. was indicated ...
During the anaerobic batch cultivation of Kluyveromyces fragilis on a complex medium contg. glucose (100 g/L), EtOH was produced at levels resulting in the inhibition of growth and EtOH formation. Continuous extn. of the EtOH using transmembrane distn. res ...
