PMID- 19232095 OWN - NLM STAT- MEDLINE DCOM- 20091207 LR - 20211020 IS - 1475-2840 (Electronic) IS - 1475-2840 (Linking) VI - 8 DP - 2009 Feb 20 TI - Myeloid-related protein 8/14 complex describes microcirculatory alterations in patients with type 2 diabetes and nephropathy. PG - 10 LID - 10.1186/1475-2840-8-10 [doi] AB - BACKGROUND: Inflammation contributes to cardiovascular complications in type 2 diabetes, which are often characterized by microvascular alterations. We investigated whether myeloid-related protein 8/14 complex (MRP8/14) secreted by transmigrating monocytes and granulocytes may represent a biomarker for microvascular alterations in patients with type 2 diabetes and nephropathy. METHODS: MRP8/14 was measured in 43 patients with type 2 diabetes and nephropathy. Additionally, the inflammatory markers Interleukin-6 (IL-6), Tumor necrosis factor-alpha (TNF-alpha) and C-reactive protein (CRP) were quantified. To detect microvascular alterations proteinuria and retinal vessel caliber were used as classical and novel marker, respectively. Proteinuria was quantified by protein-creatinine ratio (PCR); retinal vessel caliber was quantified after retina photography on digitalized retina pictures. RESULTS: MRP8/14 was positively associated with inflammation (r = 0.57), proteinuria (r = 0.40) and retinal arterial caliber (r = 0.48). Type 2 diabetic patients with MRP8/14 values above the median of 5.8 microg/ml demonstrated higher proteinuria and larger retinal artery caliber than patients with MRP8/14 values below the median (logPCR: -0.51 +/- 0.52 versus -0.96 +/- 0.46, P < 0.01; retinal artery lumen (microm): 178.3 +/- 14.1 versus 162.7 +/- 14.9 P < 0.01). Both groups did not differ with regard to metabolic factors and blood pressure. MRP8/14 was an independent predictor of retinal artery caliber in multivariate stepwise regression analysis (beta = 0.607) and was positively associated with IL-6 (r = 0.57, P < 0.001) and TNF-alpha (r = 0.36, P < 0.05). CONCLUSION: MRP8/14--a marker for transendothelial migration--describes not only the state of inflammation in diabetic nephropathy, but additionally the degree of microvascular alterations in the glomerular and retinal bed. Therefore, MRP8/14 may be a potentially selective novel biomarker for microcirculatory defects in diabetic nephropathy. FAU - Burkhardt, Klaus AU - Burkhardt K AD - Nephrological Clinic Weissenburg, 91781 Weissenburg, Germany. praxis-dr-burkhardt@t-online.de FAU - Schwarz, Sonja AU - Schwarz S FAU - Pan, Chengrui AU - Pan C FAU - Stelter, Felix AU - Stelter F FAU - Kotliar, Konstantin AU - Kotliar K FAU - Von Eynatten, Maxilian AU - Von Eynatten M FAU - Sollinger, Daniel AU - Sollinger D FAU - Lanzl, Ines AU - Lanzl I FAU - Heemann, Uwe AU - Heemann U FAU - Baumann, Marcus AU - Baumann M LA - eng PT - Comparative Study PT - Journal Article DEP - 20090220 PL - England TA - Cardiovasc Diabetol JT - Cardiovascular diabetology JID - 101147637 RN - 0 (ABCC11 protein, human) RN - 0 (ATP-Binding Cassette Transporters) RN - 0 (Biomarkers) RN - 0 (Calgranulin B) RN - 0 (Immunoglobulin G) RN - 0 (Receptors, Tumor Necrosis Factor) RN - OP401G7OJC (Etanercept) SB - IM MH - ATP-Binding Cassette Transporters/*blood MH - Aged MH - Biomarkers/blood MH - Calgranulin B/*blood MH - Cohort Studies MH - Diabetes Mellitus, Type 2/*blood/drug therapy/physiopathology MH - Diabetic Nephropathies/*blood/drug therapy/physiopathology MH - Etanercept MH - Female MH - Humans MH - Immunoglobulin G/therapeutic use MH - Male MH - Microcirculation/*physiology MH - Middle Aged MH - Receptors, Tumor Necrosis Factor/therapeutic use MH - Retinal Vessels/physiopathology PMC - PMC2654885 EDAT- 2009/02/24 09:00 MHDA- 2009/12/16 06:00 PMCR- 2009/02/20 CRDT- 2009/02/24 09:00 PHST- 2008/12/17 00:00 [received] PHST- 2009/02/20 00:00 [accepted] PHST- 2009/02/24 09:00 [entrez] PHST- 2009/02/24 09:00 [pubmed] PHST- 2009/12/16 06:00 [medline] PHST- 2009/02/20 00:00 [pmc-release] AID - 1475-2840-8-10 [pii] AID - 10.1186/1475-2840-8-10 [doi] PST - epublish SO - Cardiovasc Diabetol. 2009 Feb 20;8:10. doi: 10.1186/1475-2840-8-10.