Background/Purpose. Recent findings suggest that an objective assessment of retinal vessel caliber from fundus photographs provide information about the association of microvascular characteristics with macrovascular disease. Current methods used to quantify retinal vessel caliber, introduced by Parr(1,2) and Hubbard,(3) are not independent of scale and are affected by the number of vessels. To...

In a recent issue of this journal, the esteemed archaeologist Prof. Peter J. Parr (2020) published an editorial concerning extended amount time needed to publish excavation reports. As Prof....

The dynamics of branchial Na(+),K(+),2Cl(-) cotransporter (NKCC) and Na(+),K(+)-ATPase (NKA) expression were investigated in brown trout and Atlantic salmon during salinity shifts and the parr-smolt transformation, respectively. In the brown trout, Western blotting revealed that NKCC and NKA abundance increased gradually and in parallel (30- and ten-fold, respectively) after transfer to seawate...

A quantum-chemical analysis of the effect a constant magnetic field on radical formation in processes chain oxidation organic compounds by molecular oxygen is presented. The calculation total electronic energies and thermodynamic functions involved reactions was performed density functional method with hybrid exchange-correlation Becke, Lee, Yang Parr DFT B3LYP/6-311G** using NWChem software pa...

Freshwater and seawater isoforms of the alpha subunit of Na(+)/K(+)-ATPase (NKA) have previously been identified in gill ionocytes of Atlantic salmon (Salmo salar). In the present study we examine the abundance and cellular localization of these isoforms during the parr-smolt transformation, a developmental process that is preparatory for seawater entry. The abundance of NKAα1a was lower in smo...

Acidic rivers in Nova Scotia have low concentrations of Ca (calcium) and high concentrations of dissolved organic matter and total dissolved aluminum. Dissolved organic matter binds to aluminum to form organic aluminum complexes which are not toxic to Atlantic salmon. Increased H ion concentrations (acidity) coupled with the low concentrations of Ca have caused the mortality of salmon in Nova S...