Archive for March, 2010

March 21, 2010 / Energy Substrates, Epilepsy, Excitatory GABA, Lactate, Neuroprotectors, Pyruvate

Not only ketone bodies: on neuroprotective effects of energy substrates

In the previous post On the mechanisms of brain protection by ketones, I described how a shortage of ketones caused pathological changes in brain cells in brain slices (in vitro, 1) and in whole ani

1 Comment / Read More

March 17, 2010 / Ketone bodies, Methodology

Stereoisomers of beta-hydroxybutyrate and dibenzylamine

D-beta-Hydroxybutyrate is a physiologically occurring D-isomer produced by hepatocytes and, to a lesser extent, by astrocytes. It is an alternative source of energy in the brain when glucose suppl

No Comments / Read More

March 17, 2010 / Brain metabolism, Theories

Two energy sources: carbohydrates vs fatty acids

Read when and why glycolysis is harmful --> click here The choice of an energy pathway is dictated by the law of substrate along-term avilability in food The utilization of an energy source depen

1 Comment / Read More

March 17, 2010 / Neuroprotectors, Pyruvate

Pyruvate protects neurons against A-beta peptides characteristic for Alzheimer’s

Pyruvate is one of major energy carriers in the brain, it is shown to be protective against damaging consequences of neurotoxins, such as hydrogen peroxide, glutamate, zinc, and copper/cysteine (1). P

No Comments / Read More

March 17, 2010 / Dementia, Excitatory GABA, Ketogenic diet, Ketone bodies, Neuroprotectors

On the mechanisms of brain protection by ketones

Neuronal activity in immature neocortical neurons depends on the availability of ketone bodies in ACSF [caption id="" align="alignleft" width="120" caption="The provoking findings of Rheims et al. su

1 Comment / Read More

March 17, 2010 / Energy Homeostasis, The selfish brain, Theories

The Selfish Brain Theory

The unique position of the brain as a body organ is characterized by: 1. its chemical isolation from the rest of the body by the blood-bran barrier 2. its high energy consumption: though weighing

No Comments / Read More

March 1, 2010 / Brain metabolism, Glucose, Ketone bodies