Constructing a continuous hemodiafiltration-type circulatory model of acute kidney injury in pigs.

Introduction: Animal-model experimental systems capable of reflecting the effects of devices for continuous renal replacement therapy (CRRT) on living organisms are limited; thus, aimed to construct an animal model of AKI-CRRT using pigs.

Methods: Pigs were subjected to renal artery ischemia-reperfusion injury (IRI) and then to a maximum of 24 h of continuous hemodiafiltration (CHDF)-type CRRT.

Results: Post-IRI, pigs' creatinine levels rose threefold, and they exhibited 24 h of anuria and clear aggravation of oxidative stress, demonstrating successful induction of AKI for CRRT.

In vitro blood compatibility evaluation method: incubating while rotating hemodialyzers filled with fresh human blood.

One of the often-used methods for in vitro evaluation of the blood compatibility of hemodialysis membranes is the circulation of human blood through a miniaturized hemodialyzer. The use of a rather small amount of human blood in its evaluation is one advantage of this method. However, because it is manufactured by a different process than actual ones, a miniaturized hemodialyzer membrane cannot always preserve the properties of actual hemodialyzers.

Impact of altered dietary calcium-phosphorus ratio caused by high-phosphorus diets in a rat chronic kidney disease (CKD) model created by partial ligation of the renal arteries.

This study aimed to establish a rat chronic kidney disease (CKD) model by studying the effects of a high-phosphorus diet in rats that had undergone partial ligation of the renal arteries (RL). Separate groups of 10-week-old male Slc:Sprague-Dawley rats underwent RL and were fed diets with varying phosphorous levels for a period of 48 days. A marked suppression of body weight gain necessitating humane euthanization occurred on day 28 in rats that had undergone RL and were given high-phosphorus feed.

Analysis of ice water by the thermally stimulated depolarized current (TSDC) method.

The thermally stimulated depolarized current and temperature profiles (TSDC analysis) on iced water was proved to be an effective tool for the qualitative evaluation of various water samples, each having an independent relaxation process, brought about by a pure dipolar orientation. The method proved to be applicable to different kinds of water samples used in the experiment and tap-water samples from different suppliers. Five main peaks (A to E, in the order of increasing temperature) were observed, of which two peaks (B and D) were found for the first time.