Systemic calcium-dependent physiological processes

Systemic calcium-dependent physiological processes refer to the integrated network of biological activities that rely on calcium ions (Ca2+) for signaling and structural purposes. Calcium acts as a ubiquitous second messenger, essential for muscle contraction, neurotransmission, and blood coagulation (StatPearls: Physiology, Calcium, 2023). Systemic homeostasis is maintained through a complex feedback loop involving the parathyroid hormone (PTH), vitamin D, and the calcium-sensing receptor (CaSR), which coordinate calcium flux between the bones, kidneys, and intestines (NIH: Calcium Fact Sheet, 2024). Abnormalities in these processes contribute to various diseases, including osteoporosis, hypercalcemia, and cardiovascular disorders. Because this entry describes a broad physiological category rather than a specific protein or receptor, it is not classified as a single therapeutic target. Instead, pharmacological agents target specific components of this system, such as ion channels or G protein-coupled receptors, to achieve therapeutic effects (PubChem: Calcium-sensing receptor, 2024).

Other names

Calcium signalingCalcium homeostasisCalcium-mediated pathwaysCa2+ signaling

Drugs modulate systemic calcium by acting on specific molecular targets such as the calcium-sensing receptor (calcimimetics), voltage-gated calcium channels (calcium channel blockers), or by altering bone resorption (bisphosphonates).