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The First Hormone: Adrenaline.

Yi Rao1

  • 1Peking University, Division of Sciences, 5 Yiheyuan Road, Beijing, China.

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Summary
This summary is machine-generated.

Adrenaline, not epinephrine, is the correct name for the first hormone discovered. Its activity and purification preceded secretin, clarifying a century-old misconception.

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Area of Science:

  • Biochemistry
  • Endocrinology
  • History of Science

Background:

  • The molecule adrenaline has been associated with misconceptions for over a century.
  • Clarifying the historical context of hormone discovery is crucial for accurate scientific understanding.

Purpose of the Study:

  • To correct the misconception that epinephrine is the primary name for the hormone adrenaline.
  • To establish that adrenaline was the first hormone discovered, preceding secretin.
  • To assert the correct nomenclature and historical precedence of adrenaline's discovery.

Main Methods:

  • Historical literature review focusing on the discovery and purification of adrenaline.
  • Comparative analysis of the timelines of adrenaline and secretin discovery.
  • Chemical analysis to differentiate adrenaline from its derivatives like epinephrine.

Main Results:

  • Adrenaline's activity and chemical purification were established before secretin.
  • Jōkichi Takamine correctly named the hormone adrenaline.
  • Epinephrine is identified as an inactive benzoyl derivative of adrenaline.

Conclusions:

  • Adrenaline is the correct and original name for the first identified hormone.
  • The historical discovery of adrenaline predates that of secretin.
  • Correcting nomenclature is essential for understanding the history of endocrinology.