CA Guelph Holloway GP

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CA Guelph Holloway GP

Oroboros O2k-Network

O2k-Network Lab Dept. Human Health and Nutritional Sciences

University of Guelph

Address 50 Stone Rd.,
City Guelph
State/Prov Ontario (ON)
Country Canada
Contact Holloway Graham P
Team Paglialunga Sabine
Team previous Herbst Eric, Ludzki Alison C, Perry Christopher GR, Snook Laelie
Status 4 Power-O2k 2009-
Oroboros Events MiP2014, IOC95, MiP2013, MiPschool 2013, Bioblast 2012, IOC56, IOC55, IOC54, IOC51


Miotto 2020 Am J Physiol Endocrinol Metab2020Miotto PM, Petrick HL, Holloway GP (2020) Acute insulin deprivation results in altered mitochondrial substrate sensitivity conducive to greater fatty acid transport. Am J Physiol Endocrinol Metab 319:E345-53.
Dirks 2020 J Physiol2020Dirks ML, Miotto PM, Goossens GH, Senden JM, Petrick HL, van Kranenburg J, van Loon LJC, Holloway GP (2020) Short-term bed rest-induced insulin resistance cannot be explained by increased mitochondrial H2O2 emission. J Physiol 598:123-37.
Brunetta 2020 J Physiol2020Brunetta HS, Politis-Barber V, Petrick HL, Dennis KMJH, Kirsh AJ, Barbeau PA, Nunes EA, Holloway GP (2020) Nitrate attenuates HFD-induced glucose intolerance in association with reduced epididymal adipose tissue inflammation and mitochondrial ROS emission. J Physiol 598:3357-71.
Politis-Barber 2020 Am J Physiol Endocrinol Metab2020Politis-Barber V, Brunetta HS, Paglialunga S, Petrick HL, Holloway GP (2020) Long-term high-fat feeding exacerbates short-term increases in adipose mitochondrial reactive oxygen species, without impairing mitochondrial respiration. Am J Physiol Endocrinol Metab 319:E376-87.
Petrick 2019 J Physiol2019Petrick HL, Pignanelli C, Barbeau PA, Churchward-Venne TA, Dennis KMJH, van Loon LJC, Burr JF, Goossens GH, Holloway GP (2019) Blood flow restricted resistance exercise and reductions in oxygen tension attenuate mitochondrial H2O2 emission rates in human skeletal muscle. J Physiol 597:3985-97.
Pignanelli 2019 Am J Physiol Regul Integr Comp Physiol2019Pignanelli C, Petrick HL, Keyvani F, Heigenhauser GJF, Quadrilatero J, Holloway GP, Burr JF (2019) Low-load resistance training to task-failure with and without blood flow restriction: muscular functional and structural adaptations. Am J Physiol Regul Integr Comp Physiol 318:R284-95.
Petrick 2019 Biochem J2019Petrick HL, Holloway GP (2019) High intensity exercise inhibits carnitine palmitoyltransferase-I sensitivity to L-carnitine. Biochem J 476:547-58.
Miotto 2019 FASEB J2019Miotto PM, McGlory C, Bahniwal R, Kamal M, Phillips SM, Holloway GP (2019) Supplementation with dietary ω-3 mitigates immobilization-induced reductions in skeletal muscle mitochondrial respiration in young women. FASEB J 33:8232-40.
Baaten 2018 Haematologica2018Baaten CCFMJ, Moenen FCJI, Henskens YMC, Swieringa F, Wetzels RJH, van Oerle R, Heijnen HFG, Ten Cate H, Holloway GP, Beckers EAM, Heemskerk JWM, van der Meijden PEJ (2018) Impaired mitochondrial activity explains platelet dysfunction in thrombocytopenic cancer patients undergoing chemotherapy. Haematologica 103:1557-67.
Miotto 2018 Thesis2018Miotto PM (2018) The influence of exercise and high fat feeding on the regulation of mitochondrial substrate sensitivity in skeletal muscle. PhD Thesis p185.
Monaco 2018 Diabetologia2018Monaco CMF, Proudfoot R, Miotto PM, Herbst EAF, MacPherson REK, Holloway GP (2018) α-linolenic acid supplementation prevents exercise-induced improvements in white adipose tissue mitochondrial bioenergetics and whole-body glucose homeostasis in obese Zucker rats. Diabetologia 61:433-44.
Barbeau 2018 Biochem J2018Barbeau PA, Miotto PM, Holloway GP (2018) Mitochondrial derived reactive oxygen species influence ADP sensitivity, but not CPT-I substrate sensitivity. Biochem J 475:2997-3008.
Monaco 2018 Am J Physiol Regul Integr Comp Physiol2018Monaco CMF, Miotto PM, Huber JS, van Loon LJC, Simpson JA, Holloway GP (2018) Sodium nitrate supplementation alters mitochondrial H2O2 emission but does not improve mitochondrial oxidative metabolism in the heart of healthy rats. Am J Physiol Regul Integr Comp Physiol 315:R191-R204.
Holloway 2018 Cell Rep2018Holloway GP, Holwerda AM, Miotto PM, Dirks ML, Verdijk LB, van Loon LJC (2018) Age-associated impairments in mitochondrial ADP sensitivity contribute to redox stress in senescent human skeletal muscle. Cell Rep 22:2837–48.
Herbst 2017 Appl Physiol Nutr Metab2017Herbst EAF, George MAJ, Brebner K, Holloway GP, Kane DA (2017) Lactate is oxidized outside of the mitochondrial matrix in rodent brain. Appl Physiol Nutr Metab 43:467-74.
Edgett 2017 Thesis2017Edgett B (2017) Regulation of SIRT1, SIRT3, PGC-1α, and LRP130 in response to energetic stress in human skeletal muscle. Doctoral Dissertation p145.
Herbst 2016 Appl Physiol Nutr Metab2016Herbst EA, Holloway GP (2016) Exercise increases mitochondrial glutamate oxidation in the mouse cerebral cortex. Appl Physiol Nutr Metab 41:799-801.
Edgett 2016 Exp Physiol2016Edgett BA, Hughes MC, Matusiak JB, Perry CG, Simpson CA, Gurd BJ (2016) SIRT3 gene expression but not SIRT3 subcellular localization is altered in response to fasting and exercise in human skeletal muscle. Exp Physiol 101:1101-13.
Miotto 2016 Biochem J2016Miotto PM, Holloway GP (2016) In the absence of phosphate shuttling, exercise reveals the in vivo importance of creatine-independent mitochondrial ADP transport. Biochem J 473:2831-43.
Chorner 2016 Am J Physiol Regul Integr Comp Physiol2016Chorner Z, Barbeau PA, Castellani L, Wright DC, Chabowski A, Holloway GP (2016) Dietary α-linolenic acid supplementation alters skeletal muscle plasma membrane lipid composition, sarcolemmal FAT/CD36 abundance, and palmitate transport rates. Am J Physiol Regul Integr Comp Physiol 311:R1234-42.
Snook 2016 Am J Physiol Regul Integr Comp Physiol2016Snook LA, MacPherson RE, Monaco CM, Frendo-Cumbo S, Castellani L, Peppler WT, Anderson ZG, Buzelle SL, LeBlanc PJ, Holloway GP, Wright DC (2016) Prior exercise training blunts short term highfat diet induced weight gain. Am J Physiol Regul Integr Comp Physiol 311:R315-24.
Whitfield 2015 J Physiol2015Whitfield J, Ludzki A, Heigenhauser GJ, Senden JM, Verdijk LB, van Loon LJ, Spriet LL, Holloway GP (2015) Beetroot juice supplementation reduces whole body oxygen consumption but does not improve indices of mitochondrial efficiency in human skeletal muscle. J Physiol 594:421-35.
Van de Weijer 2015 Diabetes2015van de Weijer T, Phielix E, Bilet L, Williams EG, Ropelle ER, Bierwagen A, Livingstone R, Nowotny P, Sparks LM, Paglialunga S, Szendroedi J, Havekes B, Moullan N, Pirinen E, Hwang JH, Schrauwen-Hinderling VB, Hesselink MK, Auwerx J, Roden M, Schrauwen P (2015) Evidence for a direct effect of the NAD+ precursor acipimox on muscle mitochondrial function in humans. Diabetes 64:1193-201.
Herbst 2015 Neuroscience2015Herbst EA, Holloway GP (2015) Exercise training normalizes mitochondrial respiratory capacity within the striatum of the R6/1 model of Huntington's disease. Neuroscience 303:515-23.
Herbst 2015 Metabolism2015Herbst EA, Roussakis C, Matravadia S, Holloway GP (2015) Chronic treadmill running does not enhance mitochondrial oxidative capacity in the cortex or striatum. Metabolism 64:1419-25.
Herbst 2015 J Physiol2015Herbst EA, Holloway GP (2015) Permeabilization of brain tissue in situ enables multi-region analysis of mitochondrial function in a single mouse brain. J Physiol 593:787-801.
Van Ewijk 2015 Obesity (Silver Spring)2015van Ewijk PA, Paglialunga S, Kooi ME, Nunes PM, Gemmink A, Slenter J, Kornips E, Jörgensen JA, Hoeks J, Wildberger JE, Hesselink MK, Glatz JF, Heerschap A, Kersten S, Schrauwen P, Schrauwen-Hinderling VB (2015) Effects of high-fat feeding on ectopic fat storage and postprandial lipid metabolism in mouse offspring. Obesity (Silver Spring) 23:2242-50.
Paglialunga 2015 Diabetologia2015Paglialunga S, Ludzki A, Root-McCaig J, Holloway GP (2015) In adipose tissue, increased mitochondrial emission of reactive oxygen species is important for short-term high-fat diet-induced insulin resistance in mice. Diabetologia 58:1071-80.
Ydfors 2015 J Physiol2015Ydfors M, Hughes MC, Laham R, Schlattner U, Norrbom J, Perry CG (2015) Modelling in vivo creatine/phosphocreatine in vitro reveal divergent adaptations in human muscle mitochondrial respiratory control by ADP after acute and chronic exercise. J Physiol 594:3127-40.
Ludzki 2015 Diabetes2015Ludzki A, Paglialunga S, Smith BK, Herbst EA, Allison MK, Heigenhauser GJ, Neufer PD, Holloway GP (2015) Rapid repression of ADP transport by palmitoyl-CoA is attenuated by exercise training in humans; a potential mechanism to decrease oxidative stress and improve skeletal muscle insulin signaling. Diabetes 64:2769-79.
Herbst 2014 J Physiol2014Herbst EA, Paglialunga S, Gerling C, Whitfield J, Mukai K, Chabowski A, Heigenhauser GJ, Spriet LL, Holloway GP (2014) Omega-3 supplementation alters mitochondrial membrane composition and respiration kinetics in human skeletal muscle. J Physiol 592:1341-52.
Ludzki 2014 Thesis2014Ludzki AC (2014) Palmitoyl-CoA inhibition of mitochondrial ADP sensitivity is attenuated by exercise training in human skeletal muscle. Master's Thesis 1-86.
Beaudoin 2014 J Physiol2014Beaudoin MS, Perry CC, Arkell A, Chabowski A, Simpson JA, Wright DC, Holloway GP (2014) In the ZDF rat, impairments in mitochondrial palmitoyl-CoA respiratory kinetics that precede the development of diabetic cardiomyopathy are prevented by resveratrol supplementation. J Physiol 592:2519-33.
Lally 2013 PLoS One2013Lally JS, Herbst EA, Matravadia S, Maher AC, Perry CG, Ventura-Clapier R, Holloway GP (2013) Over-expressing mitofusin-2 in healthy mature mammalian skeletal muscle does not alter mitochondrial bioenergetics. PLoS One 8:e55660.
Smith 2013 J Physiol2013Smith BK, Perry CG, Herbst EA, Ritchie IR, Beaudoin MS, Smith JC, Neufer PD, Wright DC, Holloway GP (2013) Submaximal ADP-stimulated respiration is impaired in ZDF rats and recovered by resveratrol. J Physiol 591:6089-101.
Beaudoin 2013 Am J Physiol Regul Integr Comp Physiol2013Beaudoin MS, Snook LA, Arkell AM, Simpson JA, Holloway GP, Wright DC (2013) Resveratrol supplementation improves white adipose tissue function in a depot-specific manner in Zucker diabetic fatty rats. Am J Physiol Regul Integr Comp Physiol 305:542-51.
Smith 2012 Biochem J2012Smith BK, Perry CG, Koves TR, Wright DC, Smith JC, Neufer PD, Muoio DM, Holloway GP (2012) Identification of a novel malonyl-CoA IC50 for CPT-I: implications for predicting in vivo fatty acid oxidation rates. Biochem J 448:13-20.
Perry 2012 J Physiol2012Perry CG, Kane DA, Herbst EA, Mukai K, Lark DS, Wright DC, Heigenhauser GJ, Neufer PD, Spriet LL, Holloway GP (2012) Mitochondrial creatine kinase activity and phosphate shuttling are acutely regulated by exercise in human skeletal muscle. J Physiol 590: 5475-5486.
McFarlan 2012 J Biol Chem2012McFarlan JT, Yoshida Y, Jain SS, Han XX, Snook LA, Lally J, Smith BK, Glatz JF, Luiken JJ, Sayer RA, Tupling AR, Chabowski A, Holloway GP, Bonen A (2012) In vivo, fatty acid translocase (CD36) critically regulates skeletal muscle fuel selection, exercise performance and training-induced adaptation of fatty acid oxidation. J Biol Chem 287:23502-16.
Smith 2011 Biochem J2011Smith BK, Jain SS, Rimbaud S, Dam A, Quadrilatero J, Ventura-Clapier R, Bonen A, Holloway GP (2011) FAT/CD36 is located on the outer mitochondrial membrane, upstream of long-chain acyl-CoA synthetase, and regulates palmitate oxidation. Biochem J 437:125-34.


Kane 2016 Abstract MitoFit Science Camp 20162016Effects of inhibiting myosin-ATPase on mitochondrial respiratory capacity in permeabilized skeletal muscle.
Holloway 2014 Abstract MiP20142014Acute diet-induced insulin resistance is associated with increased adipose tissue mitochondrial ROS emissions.
Herbst 2014 Abstract MiP20142014Analysis of mitochondrial function in multiple brain regions through in situ permeabilization.
Holloway 2013 Abstract MiP20132013Holloway GP (2013) Tissue specific changes in respiratory substrate kinetics in the ZDF rat and in response to resveratrol supplementation. Mitochondr Physiol Network 18.08.
Holloway 2012 Abstract Bioblast2012Holloway GP (2012) Over-expressing mitofusin-2 in healthy mature mammalian skeletal muscle does not alter mitochondrial bioenergetics. Mitochondr Physiol Network 17.12.


  • Thanks to you and the entire team for your outstanding assistance this year, and moreso for your pleasant friendliness. - Christopher G Perry (2013)
  • High resolution designs (i.e., O2k, Oroboros Instruments) maximize respirometric sensitivity and precision (minimal O2 leak and highly sensitive electrodes), reducing the biological sample size required. Software advances in flux derivations of changes in chamber PO2 also permit real-time reporting of respiratory kinetics (Datlab, Oroboros Instruments), which improves data analyses over other systems requiring visual assessments of steady-state kinetics. - Christopher G Perry, Kane DA, Lanza IR, Neufer PD (2013) Methods for assessing mitochondrial function in diabetes. Diabetes 62: 1041-1053. »PMID: 23520284