PMID- 37723976 OWN - NLM STAT- MEDLINE DCOM- 20240110 LR - 20240110 IS - 1718-4304 (Electronic) IS - 0896-8608 (Linking) VI - 44 IP - 1 DP - 2024 Jan TI - Glucose-induced pseudohypoxia and advanced glycosylation end products explain peritoneal damage in long-term peritoneal dialysis. PG - 6-15 LID - 10.1177/08968608231196033 [doi] AB - Long-term peritoneal dialysis is associated with the development of peritoneal membrane alterations, both in morphology and function. Impaired ultrafiltration (UF) is the most important functional change, and peritoneal fibrosis is the major morphological alteration. Both are caused by the continuous exposure to dialysis solutions that are different from plasma water with regard to the buffer substance and the extremely high-glucose concentrations. Glucose has been incriminated as the major cause of long-term peritoneal membrane changes, but the precise mechanism has not been identified. We argue that glucose causes the membrane alterations by peritoneal pseudohypoxia and by the formation of advanced glycosylation end products (AGEs). After a summary of UF kinetics including the role of glucose transporters (GLUT), and a discussion on morphologic alterations, relationships between function and morphology and a survey of the pathogenesis of UF failure (UFF), it will be argued that impaired UF is partly caused by a reduction in small pore fluid transport as a consequence of AGE-related vasculopathy and - more importantly - in diminished free water transport due to pseudohypoxia, caused by increased peritoneal cellular expression of GLUT-1. The metabolism of intracellular glucose will be reviewed. This occurs in the glycolysis and in the polyol/sorbitol pathway, the latter is activated in case of a large supply. In both pathways the ratio between the reduced and oxidised form of nicotinamide dinucleotide (NADH/NAD(+) ratio) will increase, especially because normal compensatory mechanisms may be impaired, and activate expression of hypoxia-inducible factor-1 (HIF-1). The latter gene activates various profibrotic factors and GLUT-1. Besides replacement of glucose as an osmotic agent, medical treatment/prevention is currently limited to tamoxifen and possibly Renin/angiotensis/aldosteron (RAA) inhibitors. FAU - Krediet, Raymond T AU - Krediet RT AD - Division of Nephrology, Department of Medicine, Amsterdam UMC, University of Amsterdam, The Netherlands. FAU - Parikova, Alena AU - Parikova A AD - Department of Nephrology, Transplant Centre, Institute for Clinical and Experimental Medicine, Prague, Czech Republic. LA - eng PT - Journal Article PT - Review DEP - 20230918 PL - United States TA - Perit Dial Int JT - Peritoneal dialysis international : journal of the International Society for Peritoneal Dialysis JID - 8904033 RN - IY9XDZ35W2 (Glucose) RN - 0 (Dialysis Solutions) RN - 059QF0KO0R (Water) SB - IM MH - Humans MH - *Peritoneal Dialysis/adverse effects MH - Glucose/adverse effects/metabolism MH - Glycosylation MH - Peritoneum/metabolism MH - Dialysis Solutions/adverse effects/metabolism MH - Water/metabolism MH - Ultrafiltration OTO - NOTNLM OT - AGE OT - GLUT-1 OT - HIF-1 OT - glucose OT - membrane changes OT - peritoneal dialysis OT - pseudohypoxia OT - ultrafiltration impairment COIS- Declaration of conflicting interestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article. EDAT- 2023/09/19 06:42 MHDA- 2024/01/10 06:42 CRDT- 2023/09/19 02:53 PHST- 2024/01/10 06:42 [medline] PHST- 2023/09/19 06:42 [pubmed] PHST- 2023/09/19 02:53 [entrez] AID - 10.1177/08968608231196033 [doi] PST - ppublish SO - Perit Dial Int. 2024 Jan;44(1):6-15. doi: 10.1177/08968608231196033. Epub 2023 Sep 18.