Differential Regulation of Plasma Copeptin Levels in Patients with Heart Failure: A Single-Center Prospective Study.

Elevated levels of arginine vasopressin (AVP) have been reported to be involved in the pathogenesis of heart failure (HF). Recent evidence has shown the role of copeptin, the C-terminal fragment of pro-AVP, as a biomarker in patients with HF. However, the relevant information is still limited.

Photoelectron spectroscopy and Ab initio calculations of peroxy form of SO(4)(-) anion.

A photoelectron spectrum is reported for gas-phase SO(4)(-) formed in an electron-impact ionized free jet of SO(2)(1%)/O(2)(10%)/Ar. The vertical detachment energy (VDE) of the SO(4)(-) species is determined to be 3.78 +/- 0.