Nitrogenous Wastes: Often Overlooked Pollutants in Aquatic Environments

Dogmas and controversies in the handling of nitrogenous wastes: excretion of nitrogenous wastes in human subjects.

Two major nitrogenous waste products, urea and ammonium (NH(4)(+)), are produced in humans when proteins are oxidized, and in this manuscript their excretions are examined from two perspectives. First, the specific physiology of each nitrogenous waste is reviewed and the current dogmas summarized. Second, their excretions are considered in the context of integrative physiology, i.e. the need to...

Often Overlooked but Critical

Case Description A 37-year-old previously healthy right-handed woman presented with sudden onset of left facial droop, left hemiparesis, and headache after a water park ride. She was evaluated within 3 hours of symptoms and received intravenous tissuetype plasminogen activator. Computed tomographic angiography demonstrated right internal carotid artery dissection, and she underwent emergent car...

Emerging Pollutants: Their Analysis, Occurrence and Removal in Aquatic Environments

An Often Overlooked Dimension to Cardiovascular Disease

Diurnal rhythms influence cardiovascular physiology such as heart rate and blood pressure and the incidence of adverse cardiac events such as heart attack and stroke. For example, shift workers and patients with sleep disturbances, such as obstructive sleep apnea, have an increased risk of heart attack, stroke, and sudden death. Diurnal variation is also evident at the molecular level, as gene ...

Cardiac amyloidosis: a treatable disease, often overlooked.

From the Cardiac Amyloidosis Program, Brigham and Women’s Hospital and Harvard Vanguard Medical Associates, Boston, MA. The online-only Data Supplement is available with this article at http://circ.ahajournals.org/lookup/suppl/doi:10.1161/CIRCULATIONAHA. 110.010447/-/DC1. Correspondence to Rodney H. Falk, MD, Department of Cardiology, Harvard Vanguard Medical Associates, 133 Brookline Ave, Bost...