6 research outputs found
Between idealism and reality: the unknown chapter of the Thessalonikian dockworkers in their struggle in the port of Haifa, 1933â1935
Sites of Assimilation into Urban Life: Rural Migrants' Clubs in Haifa under the Mandate, 1939â48
Electrolyte transport in the renal collecting duct and its regulation by the reninâangiotensinâaldosterone system
Palestine's Absent Cities: Gender, Memoricide and the Silencing of Urban Palestinian Memory
Molecular Mechanisms and Regulation of Urinary Acidification
The H(+) concentration in human blood is kept within very narrow limits, ~ 40 nM, despite the fact that dietary metabolism generates acid and base loads that are added to the systemic circulation throughout the life of mammals. One of the primary functions of the kidney is to maintain the constancy of systemic acid-base chemistry. The kidney has evolved the capacity to regulate blood acidity by performing three key functions: 1) reabsorb HCO(3)(â) that is filtered through the glomeruli to prevent its excretion in the urine; 2) generate a sufficient quantity of new HCO(3)(â) to compensate for the loss of HCO(3)(â) resulting from dietary metabolic H(+) loads and loss of HCO(3)(â) in the urea cycle; and 3) excrete HCO(3)(â) (or metabolizable organic anions) following a systemic base load. The ability of the kidney to perform these functions requires that various cell types throughout the nephron respond to changes in acid-base chemistry by modulating specific ion transport and/or metabolic processes in a coordinated fashion such that the urine and renal vein chemistry is altered appropriately. The purpose of the article is to provide the interested reader with a broad review of a field that began historically ~ 60 years ago with whole animal studies, and has evolved to where we are currently addressing questions related to kidney acid-base regulation at the single protein structure/function level