PMID- 32374188 OWN - NLM STAT- MEDLINE DCOM- 20210719 LR - 20221207 IS - 1502-7686 (Electronic) IS - 0036-5513 (Linking) VI - 80 IP - 5 DP - 2020 Sep TI - Effects of a highly controlled carbohydrate-reduced high-protein diet on markers of oxidatively generated nucleic acid modifications and inflammation in weight stable participants with type 2 diabetes; a randomized controlled trial. PG - 401-407 LID - 10.1080/00365513.2020.1759137 [doi] AB - Carbohydrate-restricted diets are increasingly recognized as options for dietary management of type 2 diabetes mellitus (T2DM). We investigated the effects of a carbohydrate-reduced high-protein (CRHP) and a conventional diabetes (CD) diet on oxidative stress and inflammation in weight stable individuals with T2DM. We hypothesized that the CRHP diet would improve markers of oxidatively generated RNA and DNA modifications as well as inflammatory parameters. Thirty participants with T2DM were randomized to 6 weeks of CRHP or CD dietary treatment (30/50 energy percentage (E%) carbohydrate, 30/17E% protein, 40/33E% fat), followed by a cross-over to the opposite diet for a subsequent 6-week period. All meals were provided during the study and body weight was controlled. Diurnal urine samples were collected after 4 weeks on each diet and oxidatively generated RNA and DNA modifications were measured as 8-oxo-7,8-dihydroguanosine (8-oxoGuo) and 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodG), respectively. Fasting concentrations of soluble urokinase plasminogen activator receptor, high-sensitivity C-reactive protein, tumor necrosis factor alpha and interleukin-6 were measured before and after 6 weeks of interventions. Compared with the CD diet, the CRHP diet increased 24-hour urinary excretion of 8-oxoGuo by 9.3% (38.6 +/- 12.6 vs. 35.3 +/- 11.0 nmol/24 h, p = .03), whereas 8-oxodG did not differ between diets (24.0 +/- 9.5 vs. 24.8 +/- 11.1 nmol/24 h, p = .17). Changes in plasma inflammatory parameters did not differ between CRHP and CD diets, all p >/= .2. The clinical implications of increased RNA oxidation following a CRHP diet as well as long-term effects of carbohydrate-restriction on markers of oxidatively generated nucleic acid modifications should be a field of future study. FAU - Skytte, Mads Juul AU - Skytte MJ AUID- ORCID: 0000-0001-6607-2064 AD - Department of Endocrinology, Copenhagen University Hospital Bispebjerg, Copenhagen, Denmark. FAU - Samkani, Amirsalar AU - Samkani A AD - Department of Endocrinology, Copenhagen University Hospital Bispebjerg, Copenhagen, Denmark. FAU - Astrup, Arne AU - Astrup A AD - Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark. FAU - Larsen, Thomas Meinert AU - Larsen TM AD - Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark. FAU - Frystyk, Jan AU - Frystyk J AD - Department of Clinical Medicine, Aarhus University, Aarhus, Denmark. FAU - Poulsen, Henrik Enghusen AU - Poulsen HE AUID- ORCID: 0000-0003-4242-9924 AD - Department of Clinical Pharmacology, Copenhagen University Hospital Bispebjerg, Copenhagen, Denmark. AD - Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark. FAU - Henriksen, Trine AU - Henriksen T AD - Department of Clinical Pharmacology, Copenhagen University Hospital Bispebjerg, Copenhagen, Denmark. FAU - Holst, Jens Juul AU - Holst JJ AUID- ORCID: 0000-0001-6853-3805 AD - Novo Nordisk Foundation Center for Basic Metabolic Research, and Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark. FAU - Andersen, Ove AU - Andersen O AUID- ORCID: 0000-0002-2274-548X AD - Clinical Research Centre and the Emergency Department, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark. FAU - Madsbad, Sten AU - Madsbad S AD - Department of Endocrinology, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark. FAU - Haugaard, Steen Bendix AU - Haugaard SB AD - Department of Endocrinology, Copenhagen University Hospital Bispebjerg, Copenhagen, Denmark. FAU - Krarup, Thure AU - Krarup T AD - Department of Endocrinology, Copenhagen University Hospital Bispebjerg, Copenhagen, Denmark. FAU - Larsen, Emil List AU - Larsen EL AD - Department of Clinical Pharmacology, Copenhagen University Hospital Bispebjerg, Copenhagen, Denmark. LA - eng PT - Clinical Trial PT - Journal Article PT - Randomized Controlled Trial DEP - 20200506 PL - England TA - Scand J Clin Lab Invest JT - Scandinavian journal of clinical and laboratory investigation JID - 0404375 RN - 0 (Blood Glucose) RN - 0 (Glycated Hemoglobin A) RN - 0 (IL6 protein, human) RN - 0 (Interleukin-6) RN - 0 (Nucleic Acids) RN - 0 (Receptors, Urokinase Plasminogen Activator) RN - 0 (Tumor Necrosis Factor-alpha) RN - 0 (hemoglobin A1c protein, human) RN - 12133JR80S (Guanosine) RN - 3868-31-3 (8-hydroxyguanosine) RN - 88847-89-6 (8-Hydroxy-2'-Deoxyguanosine) RN - 9007-41-4 (C-Reactive Protein) SB - IM MH - 8-Hydroxy-2'-Deoxyguanosine/*urine MH - Aged MH - Blood Glucose/metabolism MH - Body Mass Index MH - Body Weight MH - C-Reactive Protein/urine MH - Cross-Over Studies MH - Diabetes Mellitus, Type 2/blood/*urine MH - Diet, Diabetic/*methods MH - Diet, High-Protein Low-Carbohydrate/*adverse effects MH - Female MH - Glycated Hemoglobin/metabolism MH - Guanosine/*analogs & derivatives/urine MH - Humans MH - Inflammation MH - Interleukin-6/urine MH - Male MH - Middle Aged MH - Nucleic Acids/*urine MH - Oxidation-Reduction MH - Oxidative Stress MH - Receptors, Urokinase Plasminogen Activator/metabolism MH - Tumor Necrosis Factor-alpha/urine OTO - NOTNLM OT - 8-dihydro-2'-deoxyguanosine OT - 8-dihydroguanosine; 8-oxo-7 OT - 8-oxo-7 OT - Type 2 diabetes mellitus OT - diet OT - low-grade inflammation OT - nutrition therapy OT - oxidative stress OT - soluble urokinase plasminogen activator receptor EDAT- 2020/05/07 06:00 MHDA- 2021/07/20 06:00 CRDT- 2020/05/07 06:00 PHST- 2020/05/07 06:00 [pubmed] PHST- 2021/07/20 06:00 [medline] PHST- 2020/05/07 06:00 [entrez] AID - 10.1080/00365513.2020.1759137 [doi] PST - ppublish SO - Scand J Clin Lab Invest. 2020 Sep;80(5):401-407. doi: 10.1080/00365513.2020.1759137. Epub 2020 May 6.