Functional impact of glycogen degradation on astrocytic signalling

Autor: Margit S, Müller
Rok vydání: 2014
Předmět:
Adrenergic Neurons
IP3
inositol 1
4
5-trisphosphate

Biochemical Society/British Neuroscience Association Focused Meeting
AC
adenylate cyclase

Glycogenolysis
Glutamic Acid
S7
Nerve Tissue Proteins
NKA
Na+/K+-ATPase

SOCE
store-operated calcium entry

Models
Biological

Synaptic Transmission
ER
endoplasmic reticulum

astrocyte
AR
adrenergic receptor

Glycogen Phosphorylase
Brain Form

NKCC1
Na+–K+–Cl− co-transporter 1

energy metabolism
PK
phosphorylase kinase

Animals
Humans
Calcium Signaling
signalling
STIM1
stromal interacting molecule 1

GP
glycogen phosphorylase

NA
noradrenaline

Glu
glutamate

sAC
soluble adenylate cyclase

ATP
Astrocytes
glycogen
Gln
glutamine

Potassium
SERCA
sarcoplasmic/endoplasmic reticulum Ca2+-ATPase

PKA
protein kinase A

glycogen phosphorylase
Signal Transduction
TRP
transient receptor potential
Zdroj: Biochemical Society Transactions
ISSN: 1470-8752
Popis: Astrocytic glycogen degradation is an important factor in metabolic support of brain function, particularly during increased neuronal firing. In this context, glycogen is commonly thought of as a source for the provision of energy substrates, such as lactate, to neurons. However, the signalling pathways eliciting glycogen degradation inside astrocytes are themselves energy-demanding processes, a fact that has been emphasized in recent studies, demonstrating dependence of these signalling mechanisms on glycogenolytic ATP.
Databáze: OpenAIRE