Ulf von Euler — Swedish physiologist and Nobel laureate

Major contributions

Von Euler isolated and characterized noradrenaline (norepinephrine) from peripheral tissues and demonstrated its role as the principal neurotransmitter of the sympathetic nervous system. He showed that chemical substances released by nerve terminals produce physiological responses in target organs and helped define the storage and release processes of transmitter substances.

Methods and findings

Combining biochemical extraction, bioassays and physiological experiments, von Euler mapped the distribution of catecholamines and linked them to vasoconstriction and other autonomic effects. His papers clarified differences among transmitters and influenced later studies of uptake, metabolism and receptor action. He also contributed to the conceptual framework that treats synaptic communication as a chemical as well as electrical process.

Career and recognition

• Renowned for precision in chemical isolation and physiological correlation.
• Shared the 1970 Nobel Prize with colleagues studying synaptic mechanisms.
• Influenced pharmacology, leading to drugs that target catecholamine systems.

Legacy and significance

Von Euler's findings helped transform neuroscience by establishing neurotransmission as a biochemically tractable process. His work remains foundational for research into autonomic regulation, cardiovascular pharmacology and neurochemistry. For accessible summaries of his life and research see a concise overview of neurotransmitter history.