Acid-base balance via conversion of lactate to bicarbonate (None)

The process of acid-base balance through the conversion of lactate to bicarbonate is a key physiological mechanism, particularly relevant in clinical settings such as fluid resuscitation and management of metabolic acidosis. This target is not a single molecule or receptor but rather a metabolic pathway involving the transformation of lactate (produced during anaerobic metabolism) into bicarbonate (HCO₃⁻), which acts as an important buffer in maintaining blood pH within a narrow range. The liver metabolizes lactate primarily through gluconeogenesis and oxidative pathways. During this process, each molecule of lactate is converted into one molecule of bicarbonate under normal aerobic conditions. This conversion helps replenish or maintain serum bicarbonate levels, thus buffering excess hydrogen ions and correcting metabolic acidosis. The effectiveness depends on adequate liver function and tissue perfusion; patients with severe shock or hepatic dysfunction may not efficiently convert lactate to bicarbonate.

Conversion of lactate to bicarbonate via hepatic metabolism