Study Design
Preclinical study in an orthologous ADPKD mouse model (mosaic conditional Pkd1 knockout). Compared ad libitum feeding vs. mild food restriction (23% reduction in caloric intake).
Intervention
Mild food restriction (23% caloric reduction) in an orthologous PKD mouse model.
Key Results
Cyst Growth: Significantly reduced
Food-restricted mice had dramatically less cystic disease compared to ad libitum-fed controls.
Kidney Function: Preserved
Kidney function was significantly better preserved in the food-restricted group.
Proliferation: Reduced
Cyst-lining cell proliferation was significantly lower with food restriction.
Significance
This was the first published evidence that a simple dietary change could slow PKD progression. It challenged the prevailing assumption that PKD was purely a genetic disease unresponsive to lifestyle intervention. This paper directly inspired the subsequent ketogenic diet research — if reducing food intake helps, could mimicking the metabolic state of fasting (ketosis) be even more effective?