Life Sci. 1985 Jan 07;36(1):25-32. doi: 10.1016/0024-3205(85)90282-6.

Glutaraldehyde pretreatment blocks phospholipase A2 modulation of adrenergic receptors.

Life sciences

R M Cohen, C McLellan, M Dauphin, F Hirata

PMID: 2857044 DOI: 10.1016/0024-3205(85)90282-6

Abstract

Treatment of rat cerebral cortical membranes with phospholipase A2 affects, in a parallel fashion, beta-, alpha 1- and alpha 2-adrenergic receptor binding, but not the affinity of these receptors for their respective ligands. Pretreatment of membranes with 0.1 percent glutaraldehyde blocks the effects of phospholipase A2 on adrenergic receptor binding. The results support the hypothesis that desensitization or "masking" of adrenergic receptors may involve changes in membrane lipid composition. Furthermore, glutaraldehyde may prove a useful tool in the investigation of the dynamic roles of lipids in receptor function and more specifically, their regulation and coupling to physiological events.

Cited by

Substances

• Adrenergic alpha-Antagonists
• Aldehydes
• Dioxanes
• Receptors, Adrenergic, alpha
• Receptors, Adrenergic, beta
• Dihydroalprenolol
• (2-(2',6'-dimethoxy)phenoxyethylamino)methylbenzo-1,4-dioxane
• Phospholipases
• Phospholipases A
• Phospholipases A2
• Clonidine
• Glutaral

MeSH terms

• Adrenergic alpha-Antagonists / metabolism
• Aldehydes / pharmacology
• Animals
• Cell Membrane / metabolism
• Cerebral Cortex / metabolism
• Clonidine / metabolism
• Dihydroalprenolol / metabolism
• Dioxanes / metabolism
• Glutaral / pharmacology
• Kinetics
• Phospholipases / antagonists & inhibitors
• Phospholipases A / antagonists & inhibitors
• Phospholipases A2
• Rats
• Receptors, Adrenergic, alpha / drug effects
• Receptors, Adrenergic, alpha / metabolism
• Receptors, Adrenergic, beta / drug effects
• Receptors, Adrenergic, beta / metabolism

Publication Types

• Journal Article

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