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The role of carnosine on Ca2+ handling, control of oxidative stress and protection against protein glycation: advances and applications of the study "Life Without Carnosine"


This project aims to assess, using in vivo experimental models to challenge homeostasis (acute physical exercise and diabetes mellitus) along with biochemical and functional markers, whether carnosine plays the following physiological roles: protection against oxygen and nitrogen reactive species and toxic by-products of the metabolism; protection against protein glycation and carbonylation; metabolic control, inflammatory profile and glucose uptake in experimental model of diabetes; regulation of Ca2+ motility during striated muscle contraction. Three independent and complementary studies are proposed, all of which using CARNS1 (gene encoding the sole enzyme responsible for endogenous synthesis of carnosine - the strain has already been developed and is available to our research team) knockout Wistar rats (KO) that will be compared with their wild type (WT) control counterparts. Study 1: samples of skeletal and cardiac muscle obtained at rest (no challenge to homeostasis) will be submitted to SERCA activity and SERCA-Ca2+ affinity assays as well as Ca2+ transport using the Time-Resolved Fluorescence Resonance Energy Transfer assay (TR-FRET). Study 2: WT and KO rats will be treated with streptozotocin to induce diabetes (DB), or only buffer with no active principle (SHAM) to serve as non-diabetic controls (CON), therefore forming 4 groups: WT-DB, WT-CON, KO-DB, KO-CON. Following diabetes confirmation, the animals will be continuously monitored (body mass, fasting glycemia, water and food intake) for 8 weeks, when the experiment will be terminated. In the last week of follow-up, the following functional assessments will be carried out: echocardiography and euglycaemic-hiperinsulinemic clamp (subgroup 1), insulin tolerance test (ITT) and kidney function via inulin clearance (subgroup 2), and skeletal muscle contractile properties and mitochondrial respiration in heart tissue homogenates (subgroup 3). Blood and selected tissues (soleus, heart and kidneys) will be collected at the end of the experiments in all subgroups for the determination of the following parameters: in blood, plasma or serum: fasting glycaemia, insulinemia, glycated haemoglobin, lipid profile (LDL, HDL, VLDL and TG), inflammatory profile (TNF-±, IL-6, IL-1², IL-10), reactive aldehyde (HNE and HHE) and their carnosine-adducts; in tissue: malondialdehyde (TBARS), 3-nitrotyrosine, 8-isoprostane, enzymatic activity (SOD, CAT and glutathione peroxidase), total and oxidised glutathione, carbonylated protein, glycated protein, advanced glycation-end products and fluorescent dihidroetidine (DHE) probe for visualisation of peroxide radicals in histological sections. Study 3: WT and KO rats will be euthanised at rest or immediately after an acute 100-min swimming exercise session with extra load corresponding to 5% of the body mass - a protocol that has been shown to acutely increase markers of oxidative stress. Blood and tissues (soleus, heart and kidneys) will be collected and submitted to the same analyses described in study 2. (AU)

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Scientific publications (11)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
SAUNDERS, BRYAN; DE OLIVEIRA, LUANA FARIAS; DOLAN, EIMEAR; DURKALEC-MICHALSKI, KRZYSZTOF; MCNAUGHTON, LARS; ARTIOLI, GUILHERME GIANNINI; SWINTON, PAUL ALAN. Sodium bicarbonate supplementation and the female athlete: A brief commentary with small scale systematic review and meta-analysis. European Journal of Sport Science, . (19/25032-9, 16/50438-0, 19/26899-6, 19/05616-6)
SOLIS, MARINA YAZIGI; ARTIOLI, GUILHERME GIANNINI; GUALANO, BRUNO. Potential of Creatine in Glucose Management and Diabetes. NUTRIENTS, v. 13, n. 2, . (19/25032-9)
GONCALVES, LIVIA DE SOUZA; SALES, LUCAS PEIXOTO; SAITO, TIEMI RAQUEL; CAMPOS, JULIANE CRUZ; FERNANDES, ALAN LINS; NATALI, JOSE; JENSEN, LEONARDO; ARNOLD, ALEXANDRE; RAMALHO, LISLEY; BECHARA, LUIZ ROBERTO GRASSMANN; et al. Histidine dipeptides are key regulators of excitation-contraction coupling in cardiac muscle: Evidence from a novel CARNS1 knockout rat model. REDOX BIOLOGY, v. 44, . (17/16540-5, 13/14746-4, 17/11142-1, 13/07937-8, 17/13552-2, 19/24899-9, 18/14544-6, 19/25032-9, 14/11948-8, 20/04006-7)
DE OLIVEIRA, LUANA FARIAS; DOLAN, EIMEAR; SWINTON, PAUL A.; DURKALEC-MICHALSKI, KRZYSZTOF; ARTIOLI, GUILHERME G.; MCNAUGHTON, LARS R.; SAUNDERS, BRYAN. xtracellular Buffering Supplements to Improve Exercise Capacity and Performance: A Comprehensive Systematic Review and Meta-analysi. SPORTS MEDICINE, v. 52, n. 3, . (19/25032-9, 19/26899-6, 16/50438-0)
SANTOS, LIVIA; GONCALVES, L. S.; BAGHERI-HANEI, SHIRIN; MOLLER, GABRIELLA BERWIG; SALE, CRAIG; JAMES, RUTH M.; ARTIOLI, GUILHERME GIANNINI. Insulin stimulates beta-alanine uptake in skeletal muscle cells in vitro. Amino Acids, v. 53, n. 11, . (14/11948-8, 19/25032-9)
MATTHEWS, JOSEPH J.; DOLAN, EIMEAR; SWINTON, PAUL A.; SANTOS, LIVIA; ARTIOLI, GUILHERME G.; TURNER, MARK D.; ELLIOTT-SALE, KIRSTY J.; SALE, CRAIG. Effect of Carnosine or beta-Alanine Supplementation on Markers of Glycemic Control and Insulin Resistance in Humans and Animals: A Systematic Review and Meta-analysis. ADVANCES IN NUTRITION, v. 12, n. 6, p. 2216-2231, . (19/05616-6, 19/26899-6, 14/11948-8, 19/25032-9)
YAMAGUCHI, GUILHERME CARVALHO; NEMEZIO, KLEINER; SCHULZ, MARIANE LEICHSENRING; NATALI, JOSE; CESAR, JONATAS EDUARDO; RIANI, LUIZ AUGUSTO; GONCALVES, LIVIA DE SOUZA; MOLLER, GABRIELLA BERWIG; SALE, CRAIG; GENNARI DE MEDEIROS, MARISA HELENA; et al. Kinetics of Muscle Carnosine Decay after beta-Alanine Supplementation: A 16-wk Washout Study. MEDICINE AND SCIENCE IN SPORTS AND EXERCISE, v. 53, n. 5, p. 1079-1088, . (13/07937-8, 17/13552-2, 19/25032-9, 14/11948-8, 13/14746-4)
NEMEZIO, KLEINER; YAMAGUCHI, GUILHERME DE CARVALHO; BOITO RAMKRAPES, ANA PAULA; SCHULZ, MARIANE LEICHSENRING; BAPTISTA, IGOR LUCHINI; RIANI, LUIZ AUGUSTO; GONCALVES, LIVIA DE SOUZA; SALE, CRAIG; GENNARI DE MEDEIROS, MARISA HELENA; GUALANO, BRUNO; et al. The role of chronic muscle (in)activity on carnosine homeostasis: a study with spinal cord-injured athletes. AMERICAN JOURNAL OF PHYSIOLOGY-REGULATORY INTEGRATIVE AND COMPARATIVE PHYSIOLOGY, v. 320, n. 6, p. R824-R832, . (14/11948-8, 19/25032-9, 17/13552-2, 13/07937-8, 15/23176-2, 13/14746-4, 19/12236-5)
MATTHEWS, JOSEPH J.; DOLAN, EIMEAR; SWINTON, PAUL A.; SANTOS, LIVIA; ARTIOLI, GUILHERME G.; TURNER, MARK D.; ELLIOTT-SALE, KIRSTY J.; SALE, CRAIG. The effect of carnosine or beta-alanine supplementation on markers of glycaemic control and insulin resistance in human and animal studies: a protocol for a systematic review and meta-analysis. SYSTEMATIC REVIEWS, v. 9, n. 1, . (14/11948-8, 19/26899-6, 19/25032-9, 19/05616-6)
ESTEVES, GABRIEL PERRI; SWINTON, PAUL; SALE, CRAIG; JAMES, RUTH M.; ARTIOLI, GUILHERME GIANNINI; ROSCHEL, HAMILTON; GUALANO, BRUNO; SAUNDERS, BRYAN; DOLAN, EIMEAR. Individual Participant Data Meta-Analysis Provides No Evidence of Intervention Response Variation in Individuals Supplementing With Beta-Alanine. INTERNATIONAL JOURNAL OF SPORT NUTRITION AND EXERCISE METABOLISM, v. 31, n. 4, p. 305-313, . (19/05616-6, 20/07860-9, 19/25032-9, 16/50438-0, 19/26899-6)
JONES, REBECCA L.; STELLINGWERFF, TRENT; SWINTON, PAUL; ARTIOLI, GUILHERME GIANNINI; SAUNDERS, BRYAN; SALE, CRAIG. Warm-Up Intensity Does Not Affect the Ergogenic Effect of Sodium Bicarbonate in Adult Men. INTERNATIONAL JOURNAL OF SPORT NUTRITION AND EXERCISE METABOLISM, v. 31, n. 6, p. 482-489, . (19/25032-9, 14/11948-8, 16/50438-0)

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