Theories & Frameworks
Vicinal water
Water near surfaces, especially hydrophobic surfaces, that is physically and chemically different from ordinary water.
Vicinal water is the term for water in the immediate vicinity of a surface or interface, which possesses electronic and structural properties distinct from those of bulk water. Peat emphasized that this interfacial water constitutes a special phase of matter, and that most of the water in cells is vicinal water, its state governed by the cell's metabolic energy and ionic environment rather than being a passive solvent. Walter Drost-Hansen demonstrated that vicinal water is several percent less dense and has a greater heat capacity than bulk water, and that bulk water itself undergoes temperature-dependent transitions affecting enzyme reactions.
The functional state of the cell is intimately tied to transitions in its vicinal water. In the resting cell, potassium ions, which interact very weakly with water, are associated with acidic protein groups, allowing water to form stable, somewhat hydrophobic structures. During excitation, potassium is exchanged for sodium and calcium, which are smaller atoms with a higher surface charge concentration that powerfully disrupt water's delicate intracellular structuring, making the cell water more hydrophilic. This destruction of structured water allows bulk dielectric water to enter cells, causing swelling and a separation of structural proteins, a phenomenon visible in electron micrographs of fatigued muscle. Peat argued that the cell's energy and relaxation represent a structural state involving the entire cell substance, where high energy phosphate bonds explain nothing about the cell's actual energetic organization.
The capacity for water to maintain long-range order is central to tissue transparency and function. Peat cited the lens of the eye, where the protein crystallin binds about twice as much water as other proteins and holds it in such a highly ordered state that it does not interfere with the passage of visible light. When energy processes fail due to influences like estrogen, polyunsaturated fats, or lactic acid, the water escapes the control of these proteins, becoming ordinary bulk water that scatters light and allows metabolic debris to accumulate, a primary factor in cataract formation. This long-range ordering principle was also observed by Max Perutz in wet protein crystals, where stable, mobile multilayers of water formed between protein surfaces, and by researchers studying clay, where interfacial water exhibits special catalytic properties.
Peat connected vicinal water to a broader concept of water memory, wherein water that has been near a surface retains some of that structuring effect. He noted that in the 1930s and 40s, water was already understood to have intrinsic memory and long-range ordering processes, a principle applied by Vernadski to show that wet, gelatinous substances can store a record of energy that has passed through them. The study of these forces at surfaces has been politically and economically contentious, as the implications of non-local energy at interfaces challenged dominant paradigms in physics and biology, leading to organized campaigns that discouraged research into structured water and related phenomena.
People also ask
- How does vicinal water differ from ordinary bulk water?Vicinal water is less dense, has a greater heat capacity, and possesses a distinct electronic and structural order compared to bulk water, forming a special phase of matter at surfaces.
- What happens to cellular water during excitation or fatigue?Peat described that excitation exchanges potassium for sodium and calcium, which disrupts the stable structuring of vicinal water, allowing bulk water to enter cells and cause swelling and protein separation.
- Why is structured water important for the lens of the eye?Peat argued that the protein crystallin holds water in a highly ordered vicinal state that does not scatter light, and when energy failure disrupts this ordering, the water becomes bulk-like, contributing to cataract formation.