Vascular function in kidneys preserved by simple cold storage in Sacks' or Collins' solutions

Area of Science:

• Organ transplantation
• Nephrology
• Surgical research

Background:

• Kidney preservation solutions are critical for transplant success.
• Understanding the impact of preservation time and ischemia on kidney function is essential.

Purpose of the Study:

• To evaluate the effects of Collins' and Sacks' preservation solutions on kidney vascular resistance and edema.
• To assess the influence of varying warm ischemia times on kidney preservation outcomes.

Main Methods:

• Determined vascular resistance in 40 kidneys after preservation.
• Utilized Collins' or Sacks' solution for 24 and 48 hours.
• Investigated kidneys with 0-60 minutes of warm ischemia before preservation.

Main Results:

• Cold preservation with minimal warm ischemia (0-15 min) caused minor vascular resistance increases, irrespective of solution.
• Prolonged warm ischemia (30-60 min) significantly increased vascular resistance, with Sacks' solution showing a lesser increase.
• Sacks' solution led to slight dehydration, while Collins' solution caused minor weight gain; no correlation between edema and vascular resistance was found.

Conclusions:

• Sacks' solution may offer better protection against vascular resistance increase after prolonged warm ischemia compared to Collins' solution.
• Kidney preservation strategies should consider the duration of warm ischemia to minimize post-transplant vascular complications.