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

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Urine composition in pigs is regulated in both the ureter and the bladder. / Jakobsen, L. K.; Andersson, K. E.; Norregaard, R.; Olsen, L. H.

In: Physiological Research, Vol. 68, No. 5, 10.2019, p. 785-792.

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Jakobsen, L. K. ; Andersson, K. E. ; Norregaard, R. ; Olsen, L. H. / Urine composition in pigs is regulated in both the ureter and the bladder. In: Physiological Research. 2019 ; Vol. 68, No. 5. pp. 785-792.

Bibtex

@article{08efca7c24fe450fb53867cb33be44a9,
title = "Urine composition in pigs is regulated in both the ureter and the bladder",
abstract = "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.",
author = "Jakobsen, {L. K.} and Andersson, {K. E.} and R. Norregaard and Olsen, {L. H.}",
year = "2019",
month = oct,
doi = "10.33549/physiolres.934086",
language = "English",
volume = "68",
pages = "785--792",
journal = "Physiological Research",
issn = "0862-8408",
publisher = "Akademie Ved Ceske Republiky Fyziologicky Ustav",
number = "5",

}

RIS

TY - JOUR

T1 - Urine composition in pigs is regulated in both the ureter and the bladder

AU - Jakobsen, L. K.

AU - Andersson, K. E.

AU - Norregaard, R.

AU - Olsen, L. H.

PY - 2019/10

Y1 - 2019/10

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85074675939&partnerID=8YFLogxK

U2 - 10.33549/physiolres.934086

DO - 10.33549/physiolres.934086

M3 - Journal article

C2 - 31424252

AN - SCOPUS:85074675939

VL - 68

SP - 785

EP - 792

JO - Physiological Research

JF - Physiological Research

SN - 0862-8408

IS - 5

ER -