Medicinal Chemistry-Fusion of Traditional and Western Medicine

Medicinal Chemistry-Fusion of Traditional and Western Medicine

Volume: 3

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Medicinal Chemistry - Fusion of Traditional and Western Medicine is a textbook intended for students taking courses in the various fields of medicinal chemistry, pharmacy, medical and dental ...
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Systems Thinking in Medicinal Chemistry

Pp. 552-593 (42)

Robert E. Smith

Abstract

Systems biology is essential for P4 medicine, as are autopoiesis, network theory and the concept of emergent properties. That is, the basic, fundamental unit of life is the cell, not the atoms and molecules in the cell. Many new properties emerge when atoms, molecules and ions are organized in a living cell. The functions of a cell do not depend on just the properties of the individual molecules, but also on how these molecules interact. Autopoiesis means self-production. It is a network of production processes, in which the function of each component is to participate in the production or transformation of itself and the other components in the network. The production processes are circular. Life is a cyclic process that produces the components of a living system. Based on the autopoietic theory of life, the biosphere of Earth is often thought of as a living system. Bacteria can be thought of as the catalysts that maintain the atmosphere in its present state, far from equilibrium, but stable, like homeostasis in a cell, organ or organism. Networks permeate living systems. Living systems and the internet are examples of a type of network called a scale-free network. These networks are dominated by a few well-connected nodes, called hubs. Most nodes in the network have a few connections, but a small number of nodes have a seemingly unlimited number of connections. In the scale-free network that is in living cells, there are many levels of organization. Each of them can be viewed as a network. There is a network of genes, a metabolic network, a regulatory network and a cellular network.

Keywords:

Autopoiesis, Gaia, Hubs, Nodes, Scale-free network, Systems biology.

Affiliation:

Park University, Parkville, USA.