Urine composition in pigs is regulated in both the ureter and the bladder

Title:

Urine composition in pigs is regulated in both the ureter and the bladder

Creator:

Kaasgaard Jakobsen, L., Andersson, K.-E., Nørregaard, R., and Henning Olsen , L.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:b3328389-4511-4420-819d-c821766932a1
uuid:b3328389-4511-4420-819d-c821766932a1
doi:10.33549/physiolres.934086

Subject:

urine composition and animal model

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

The former perception of the urothelium as an impermeable barrier has been revised during the last decade, as increasing evidence of changes in urine composition during its passage of the urinary tract has been presented. Since differences in urothelial permeability between upper and lower urinary tract have been found, our aim is to demonstrate whether changes in urine composition occur during passage through the ureter. We studied consecutive urine samples from both renal pelvises in six pigs and compared them to samples from the bladder and distal ureter. We further sampled urine during storage in the bladder at a fixed volume. All samples were analysed by measuring osmolality and pH, along with the concentration of the following parameters: Na+, K+, Cl- , creatinine, urea. Urine alkalinity increased significantly during passage of the ureter. Creatinine concentration, pH and K+ increased significantly during the passage from pelvis to the bladder. All other parameters increased non-significantly during the passage to the bladder. The increase in concentration was more pronounced at low concentrations in the pelvis. During storage in the bladder, there was a significant increase in urea concentration. Changes in the composition of urine occur during its passage from the renal pelvis to the bladder and during storage in the bladder. Despite the brief transit time, significant changes in alkalinity were found already during passage through the ureter.

Language:

English

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Coverage:

785-792

Source:

Physiological research | 2019 Volume:68 | Number:5

Harvested from:

CDK

Metadata only:

false