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Table 1 Blood-brain barrier uptake rates of glucose, oxygen, ammonia, cystine and essential amino acids; and carbon dioxide release rate (μmol/g tissue/min). The related references for the rates are given under "Parameters used in the stoichiometric model" section. A: Astrocytes, N: Neurons, CMR: Cerebral Metabolic Rate

From: Reconstruction and flux analysis of coupling between metabolic pathways of astrocytes and neurons: application to cerebral hypoxia

CMRGlucose

0.160

CMRGlucosesN

0.160

CMRO2A

0.530

CMRO2N

1.230

CMRCO2A

0.515–0.530

CMRCO2N

1.193–1.230

CystineA

0.0045

AmmoniaA

0.0035

PhenyalanineN

0.0132

TryptophanN

0.0082

LeucineA

0.0145

IsoleucineA

0.0040

TyrosineN

0.0041

ValineA

0.0018

LysineN

0.0103