Molecular Physiology Overview

Principles

Definition

Molecular physiology is an academic discipline investigating the molecular mechanisms and interactions that govern physiological processes within living organisms. This field seeks to elucidate how the function of biological molecules dictates cellular and systemic activities, providing a fundamental basis for understanding life and disease.

Ontological type

Core Molecular Mechanisms

Experimental Techniques

Disease Mechanisms

Key developments

Key Figures

Membrane Energetics and Transport era

A. L. Hodgkin [1] was affiliated with Rockefeller University [3] and Columbia University [4] during this era. His quantitative description of membrane current, exemplified by A quantitative description of membrane current and its application to conduction and excitation in nerve [7], and Currents carried by sodium and potassium ions through the membrane of the giant axon of Loligo [8], linked sodium and potassium conductances to nerve excitability and laid the groundwork for ion-channel and membrane energetics concepts that defined this period. S V Perry [2] was affiliated with the University of Cambridge [5] and the University of Minnesota [6] during this period. His electrophoretic study of the low-molecular-weight components of myosin [9] contributed to understanding muscle biochemistry and cellular energetics that underpin phosphorylation and energy transfer in membrane processes of this era.

Second-Messenger Signal Integration era

Peter A. Kollman [1] was active in this era, with institutional ties spanning Harvard University [3] and the University of California, San Francisco [4]. His key contribution is the 1992 paper 'THE weighted histogram analysis method for free-energy calculations on biomolecules. I. The method' [7], which introduced WHAM to obtain robust free-energy estimates in biomolecular simulations and thereby illuminate energy landscapes relevant to receptor signaling in this era. Louis Sokoloff [2] was active in this era with affiliations at University of Pennsylvania [5] and Karolinska Institutet [6], reflecting cross-institutional efforts in metabolic mapping. Louis Sokoloff [2] authored the 1977 paper 'THE [14C]DEOXYGLUCOSE METHOD FOR THE MEASUREMENT OF LOCAL CEREBRAL GLUCOSE UTILIZATION: THEORY, PROCEDURE, AND NORMAL VALUES IN THE CONSCIOUS AND ANESTHETIZED ALBINO RAT' [8], which provided a foundational approach to measuring local brain glucose use and linked metabolic activity to signaling processes central to second-messenger physiology.

Neuroendocrine Metabolic Integration era

Tomas Ganz [1] is a central figure in this era, with affiliations at Stanford University [3] and University of Pennsylvania [4]. Tomas Ganz [1] co-authored Hepcidin Regulates Cellular Iron Efflux by Binding to Ferroportin and Inducing Its Internalization [6], a finding that established a hormonal regulation of iron homeostasis and linked metabolic signaling to cellular iron transport. Elizabeta Nemeth [2] is a leading figure associated with Harvard University [5] and University of Pennsylvania [4] during this era. Elizabeta Nemeth [2] contributed to Hepcidin Regulates Cellular Iron Efflux by Binding to Ferroportin and Inducing Its Internalization [6], helping to define how this signal coordinates iron handling with metabolic stress signaling across organs.