Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Glomerular and proximal tubule cysts as early manifestations of Pkd1 deletion

Ahrabi, Ali K., Jouret, Francois, Marbaix, Etienne, Delporte, Christine, Horie, Sigeo, Mulroy, Sharon, Boulter, Catherine, Sandford, Richard and Devuyst, Olivier 2009. Glomerular and proximal tubule cysts as early manifestations of Pkd1 deletion. Nephrology Dialysis Transplantation 25 (4) , pp. 1067-1078. 10.1093/ndt/gfp611

Full text not available from this repository.


Background: The homozygous deletion of Pkd1 in the mouse results in embryonic lethality with renal cysts and hydrops fetalis, but there is no precise data on the segmental origin of cysts and potential changes associated with polyhydramnios. Methods: We used Pkd1-null mice to investigate cystogenesis and analyze the amniotic fluid composition from embryonic day 12.5 (E12.5) to birth (n = 257 embryos). Results: Polyhydramnios was consistently observed from E13.5 in Pkd1−/− embryos, in absence of placental abnormalities but with a significantly higher excretion of sodium and glucose from E13.5 through E16.5, and increased cyclic adenosine 3'5-monophosphate (cAMP) levels at E14.5 and E15.5. The Pkd1−/− embryos started to die at E13.5, with lethality peaking at E15.5, corresponding to the onset of cystogenesis. The first cysts in Pkd1−/− kidneys emerged at E15.5 in mesenchyme-derived segments at the cortico-medullary junction, with a majority of glomerular cysts and fewer proximal tubule cysts (positive for megalin). The cysts extended to ureteric bud-derived collecting ducts (positive for Dolichos biflorus agglutinin lectin) from E16.5. Conclusions: These studies indicate that Pkd1 deletion is associated with a massive loss of solutes (from E13.5) and increased cAMP levels (E14.5) associated with polyhydramnios. These abnormalities precede renal cysts (E15.5), first derived from glomeruli and proximal tubules and later from the collecting ducts, reflecting the expression pattern of Pkd1 in maturing epithelial cells.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Biosciences
Subjects: Q Science > QR Microbiology
Uncontrolled Keywords: cystogenesis; glomerular and proximal tubule cysts; low-molecular-weight protein; megalin; polyhydramnios
Publisher: Oxford University Press
ISSN: 0931-0509
Last Modified: 04 Apr 2020 01:33

Citation Data

Cited 18 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item