Mendelson contributed equally to experimental design == Contributor Information == Caigan Du, Phone: +1 604-875-4111, Email: caigan@mail

Mendelson contributed equally to experimental design == Contributor Information == Caigan Du, Phone: +1 604-875-4111, Email: caigan@mail. ubc. ca. Asher A. the blood (S)-(-)-Citronellal chemistry between rats receiving the HPG and the Control, while PYS increased serum alkaline phosphatase, globulin and creatinine and decreased serum (S)-(-)-Citronellal albumin. Unlike PYS, HPG did not significantly attenuate PM function, which was associated with smaller change in both the structure and the angiogenesis from the PM and less cells expressing vascular endothelial growth element, -smooth muscle actin and MAC387 (macrophage marker). The pathway analysis revealed that there were more inflammatory signaling pathways functioning in the PM of PYS group than those of HPG or Control, which included the signaling for cytokine production in both macrophages and T cells, (S)-(-)-Citronellal interleukin (IL)-6, IL-10, Toll-like receptors, triggering receptor expressed on myeloid cells 1 and high mobility group box 1 . == Conclusions == The results from this experimental study indicate the superiority of HPG to glucose in the preservation from the peritoneum function and structure during the long-term PD treatment, suggesting the potential of HPG as a novel osmotic agent intended for PD. == Electronic supplementary material == The online edition of this article (doi: 10. 1186/s12967-016-1098-z) contains supplementary material, which is available to certified users. Keywords: PD answer, Biocompatibility, Hyperbranched polyglycerol, Long-term PD, Peritoneal membrane == Background == Peritoneal dialysis (PD) is one of the effective options for treating renal failure in patients in nephrology clinics, evidenced by the fact that as compared to hemodialysis (HD), PD has better or the same clinical results [13], and is also associated with an increase in quality-of-life and therapy-satisfaction scores in patients [4, 5]. Dianeal and Physioneal (PYS) from Baxter are the most common solutions for PD, and contain a high concentration of glucose as an osmotic agent. However , increasing evidence in the literature clearly demonstrates that the long-term exposure to these glucose-containing PD solutions is associated with systemic wellness complications (e. g. an increase in cardiovascular disease and the loss of residual kidney function) in (S)-(-)-Citronellal PD patients particularly for those with diabetes [610], and causes local deleterious effect on the peritoneumleading to ultrafiltration failure (UFF) and resulting in poor outcome of PD [11, 12]. Thus, there is an unmet need for glucose-free PD solutions in order to improve clinical outcomes of PD. Hyperbranched polyglycerol (HPG) is a highly hydrophilic, water-soluble branched polyether polymer, and can be prepared by a one-step synthesis via ring-opening multi-branching polymerization of glycidol [13]. Recent reports in literature demonstrate the biocompatibility and potential use of this macromolecule in many different biomedical applications, such as a human serum albumin substitute [14], a drug carrier [15, 16] and a colloid for chilly preservation of cells or organs [17]. Our preliminary studies have shown that HPG (0. 53 kDa)-based PD solutions can be prepared by varying the HPG concentration from 2 . 5 to 15% (w/v) within an osmolality range (294424 mOsm/kg) and neutral pH (6. 67. 4) that are comparable to Dianeal (2. 5% glucose, 395 mOsm/L, pH 5. 2) and PYS (2. 27% glucose, 395 mOsm/L, pH 7. 4) [18, 19], and by a single dwell time these HPG-based PD solutions produced similar or significantly better fluid and waste removal (S)-(-)-Citronellal while causing less damage to peritoneal membrane (PM) in rats compared to either Dianeal (2. 5% glucose) or PYS (2. 27% glucose) [18, 19]. The objective of the current study was to check out the long-term effects of HPG-based PD answer (denoted here as HPG) compared to conventional glucose-based PYS in Mouse monoclonal to WNT5A rats, especially around the PM structure and function. == Methods == == Reagents and animals == Physioneal 40 answer (denoted because PYS here) was purchased from Baxter Healthcare Co. (Deerfield, IL, USA). Primary antibodies were: mouse anti-vascular endothelial growth factor (VEGF) antibody (Cat#: NB100-664, Novus Biologicals, Littleton CO, USA), mouse monoclonal anti–smooth muscle actin (SMA) (clone 1A4, Sigma-Aldrich, Oakville, ON, Canada), and mouse monoclonal anti-MAC387 antibody (Clone MAC387, Santa Cruz Biotech Inc., Dallas, TX, USA), and mouse monoclonal anti–actin (clone AC-40, Sigma-Aldrich, Canada). Secondary horseradish peroxidase (HRP)-conjugated anti-mouse IgG HRP (sc-2314) was from Santa Cruz Biotech. Male outbred Wistar rats (~400 g bodyweight, 1214 weeks old) were purchased from the Charles River Laboratories International, Inc. (Wilmington, MA, USA), and maintained in the pet facility from the Jack Bell Research Centre at the University of British Columbia.