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Disposal of blood [1-13c] lactate in humans during rest and exercise
Abstract
Lactate irreversible disposal (RiLa) and oxidation (RoxLa) rates were studied in six male subjects during rest (Re), easy exercise [EE, 140 min of cycling at 50% of maximum O2 consumption (VO2max)] and hard exercise (HE, 65 min at 75% VO2max). Twenty minutes into each condition, subjects received a Na+-L(+)-[1-13C]lactate intravenous bolus injection. Blood was sampled intermittently from the contralateral arm for metabolite levels, acid-base status, and enrichment of 13C in lactate. Expired air was monitored continuously for determination of respiratory parameters, and aliquots were collected for determination of 13C enrichment in CO2. Steady-rate values for O2 consumption (VO2) were 0.33 +/- 0.01, 2.11 +/- 0.03, and 3.10 +/- 0.03 l/min for Re, EE, and HE, respectively. Corresponding values of blood lactate levels were 0.84 +/- 0.01, 1.33 +/- 0.05, and 4.75 +/- 0.28 mM in the three conditions. Blood lactate disposal rates were significantly correlated to VO2 (r = 0.78), averaging 123.4 +/- 20.7, 245.5 +/- 40.3, and 316.2 +/- 53.7 mg X kg-1 X h-1 during Re, EE, and HE, respectively. Lactate oxidation rate was also linearly related to VO2 (r = 0.81), and the percentage of RiLa oxidized increased from 49.3% at rest to 87.0% during exercise. A curvilinear relationship was found between RiLa and blood lactate concentration. It was concluded that, in humans, 1) lactate disposal (turnover) rate is directly related to the metabolic rate, 2) oxidation is the major fate of lactate removal during exercise, and 3) blood lactate concentration is not an accurate indicator of lactate disposal and oxidation.
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“Most lactate disposal occurs via oxidation in working skeletal muscle during prolonged endurance exercise, but other tissues such as the brain, liver and kidneys are also involved in lactate turnover [121,122,123].”
From Regulation of Energy Substrate Metabolism in Endurance Exercise (2021) · cites this paper as [121]
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Items 101–190 of 190
Kowalchuk, J. M., Smith, S. A., Weening, B. S., et al. (2000) · Journal of Applied Physiology · doi:10.1152/jappl.2000.89.1.200 · Cited by 23
“However, as [La(2)]pl represents a balance between plasma La(2) appearance and disappearance (21, 36), the lower [La(2)]pl after Acz administration must be related to either 1) increased La(2) uptake from blood into active and inactive muscle and other tissues, 2) increased mitochondrial oxidation of pyruvate, La(2),…”
BackgroundBlood lactate concentrations during incremental exercise in subjects with sickle cell trait
BILÉ, A., GALLAIS, D. L., Mercier, B., et al. (1998) · Medicine & Science in Sports & Exercise · doi:10.1097/00005768-199805000-00002 · Cited by 23
Hoshino, D., Hanawa, T., Takahashi, Y., Masuda, H., Kato, M., & Hatta, H. (2014) · Journal of Nutritional Science and Vitaminology · doi:10.3177/jnsv.60.413 · Cited by 22
Blood lactate levels as a biomarker of antipsychotic side effects in patients with schizophrenia
Elmorsy, E. M., Shahda, M., Mahmoud, E.-H. M., Rakha, S. A., & Shoaib, M. C. (2015) · Journal of Psychopharmacology · doi:10.1177/0269881115616385 · Cited by 22
Bioenergetics of Exercising Humans
Brooks, G. A. (2012) · Comprehensive physiology · doi:10.1002/j.2040-4603.2012.tb00407.x · Cited by 23
Self-citationThe blood lactate/pyruvate equilibrium affair
Brooks, G. A., Osmond, A. D., Leija, R. G., Curl, C. C., Arevalo, J. A., Duong, J. J., & Horning, M. A. (2021) · American Journal of Physiology-Endocrinology and Metabolism · doi:10.1152/ajpendo.00270.2021 · Cited by 22
Self-citationPeveler, W. W., & Palmer, T. G. (2012) · The Journal of Strength and Conditioning Research · doi:10.1519/jsc.0b013e31822dcd7f · Cited by 22
“During exercise, it is more likely that lactate is being oxidized in nonworking muscles as opposed to those directly involved in exercise, therefore not adding to energy transfer directly related to human movement (11,14,18,21,25).”
BackgroundComparison of incremental and steady state tests of endurance training
Denis, C., Dormois, D., Castells, J., Bonnefoy, R., Padilla, S., GEYSSANT, A., & Lacour, J. R. (1988) · European Journal of Applied Physiology · doi:10.1007/bf00417996 · Cited by 19
Respective oxidation of13C-labeled lactate and glucose ingested simultaneously during exercise
Péronnet, F., Burelle, Y., Massicotte, D., Lavoie, C., & Hillaire‐Marcel, C. (1997) · Journal of Applied Physiology · doi:10.1152/jappl.1997.82.2.440 · Cited by 20
Takahashi, K., Kitaoka, Y., Matsunaga, Y., & Hatta, H. (2020) · Current Research in Physiology · doi:10.1016/j.crphys.2020.07.002 · Cited by 20
Blood lactate levels of decathletes during competition.
Beaulieu, P., OTTOZ, H., Grange, C., et al. (1995) · British Journal of Sports Medicine · doi:10.1136/bjsm.29.2.80 · Cited by 18
V-A and A-V modes in whole body and regional kinetics: domain of validity from a physiological model
Saccà, L., TOFFOLO, G. M., & Cobelli, C. (1992) · American Journal of Physiology-Endocrinology and Metabolism · doi:10.1152/ajpendo.1992.263.4.e597 · Cited by 18
Determination of δ13C values of plasma lactate by gas chromatography/isotope ratio mass spectrometry
Khalfallah, Y., Normand, S., Tissot, S., et al. (1993) · Journal of Mass Spectrometry · doi:10.1002/bms.1200221207 · Cited by 18
What the Lactate Shuttle Means for Sports Nutrition
Brooks, G. A. (2023) · Nutrients · doi:10.3390/nu15092178 · Cited by 21
Self-citationChen, C., Liao, Y., Lin, S.-Y., Yu, J.-X., Li, Z.-J., Lin, Y.-C., Chang, G., Lin, C.-H., & Wong, M. (2017) · American Journal of Physiology-Regulatory, Integrative and Comparative Physiology · doi:10.1152/ajpregu.00337.2016 · Cited by 17
“The high level of blood lactate is cleared mainly by oxidation (in high-oxidative cells such as type I muscle fibers, heart, and brain) and via gluconeogenesis (in liver and kidney) (14, 17).”
BackgroundRotstein, A., Dotan, R., Zigel, L., et al. (2007) · Applied Physiology Nutrition and Metabolism · doi:10.1139/h07-066 · Cited by 15
Anaerobic capacity assessment in elite swimmers through inertial sensors
Demarie, S., Chirico, E., Gianfelici, A., et al. (2019) · Physiological Measurement · doi:10.1088/1361-6579/ab205d · Cited by 14
Quantifications of Lipid KineticsIn VivoUsing Stable Isotope Tracer Methodology
Kim, I., Park, S., Jang, J., & Wolfe, R. R. (2020) · Journal of Lipid and Atherosclerosis · doi:10.12997/jla.2020.9.1.110 · Cited by 14
The Effects of Smoking on Exercise Performance
Huie, M. J. (1996) · Sports Medicine · doi:10.2165/00007256-199622060-00003 · Cited by 14
Brooks, G. A. (1999) · Advances in experimental medicine and biology · doi:10.1007/978-1-4615-4711-2_16 · Cited by 13
Self-citationAllen, P. J., & Brooks, G. A. (1994) · Biochemical Journal · doi:10.1042/bj3030207 · Cited by 13
Self-citationEto, D., Hada, T., Kusano, K., Kai, M., & KUSUNOSE, R. (2004) · Journal of Equine Science · doi:10.1294/jes.15.61 · Cited by 12
“is performed using the lactate that has accumulated in muscle as a substrate [2, 7].”
BackgroundMethodLeftin, A., Roussel, T., & Frydman, L. (2014) · PLoS ONE · doi:10.1371/journal.pone.0096399 · Cited by 12
“Another possibility is that these fibers are reflecting an early intravasation of muscle lactate, known to occur over longer intervals poststimulation [38].”
BackgroundDonovan, E. R., & Gleeson, T. T. (2006) · Physiological and Biochemical Zoology · doi:10.1086/501055 · Cited by 12
Krzyściak, W., Bystrowska, B., Karcz, P., Chrzan, R. M., Bryll, A., Turek, A., Mazur, P., Śmierciak, N., Szwajca, M., Donicz, P., et al. (2024) · International Journal of Molecular Sciences · doi:10.3390/ijms25042294 · Cited by 11
“This positive correlation of cortisol and glutamate level indicates an excitotoxic effect on the hippocampus induced by glutamate [111].”
BackgroundErgoespirometria em atletas paraolímpicos brasileiros
da Silva, A. C., & Torres, F. C. (2002) · Revista Brasileira de Medicina do Esporte · doi:10.1590/s1517-86922002000300008 · Cited by 10
Francaux, M., Jacqmin, P. A., de Welle, J. M., et al. (1995) · European Journal of Applied Physiology · doi:10.1007/bf00964115 · Cited by 10
Heart rate and plasma lactate responses to training in andalusian horses
Agüera, E. I., Rubio, D., Vivo, R., Santisteban, R., Agüera, S., Muñoz, A., & Castejón, F. M. (1995) · Journal of Equine Veterinary Science · doi:10.1016/s0737-0806(07)80423-0 · Cited by 10
Pedersen, M. G. B., Rittig, N. F., Bangshaab, M., Hansen, K. B., Gopalasingam, N., Gormsen, L. C., Søndergaard, E., & Møller, N. (2024) · American Journal of Physiology-Endocrinology and Metabolism · doi:10.1152/ajpendo.00301.2023 · Cited by 13
Effect of dichloroacetate on oxidative removal of lactate in mice after supramaximal exercise
Hatta, H., Soma, R., & Atomi, Y. (1991) · Comparative Biochemistry and Physiology Part B Comparative Biochemistry · doi:10.1016/0305-0491(91)90220-8 · Cited by 9
Pyruvate dehydrogenase activation in inactive muscle during and after maximal exercise in men
Putman, C. T., Matsos, M. P., Hultman, E., Jones, N. L., & Heigenhauser, G. J. F. (1999) · American Journal of Physiology-Endocrinology and Metabolism · doi:10.1152/ajpendo.1999.276.3.e483 · Cited by 9
“Increases in LA uptake (1, 2, 4, 10, 19, 21) and LA turnover (7, 22, 25) in inactive muscles have been demonstrated in both human (1, 4, 8, 19, 21) and animal models (7, 10, 25) of exercise (1, 4, 8, 19, 21) and LA infusion during rest (2, 7, 10, 22, 25, 30) and exercise (1, 4, 7, 8, 22).”
BackgroundGoodwin, M. L., & Rothberg, D. L. (2014) · The Journal of Trauma: Injury, Infection, and Critical Care · doi:10.1097/ta.0000000000000162 · Cited by 8
Stanley, W. C., & Brooks, G. A. (1987) · American Journal of Physiology-Endocrinology and Metabolism · doi:10.1152/ajpendo.1987.253.4.e472 · Cited by 8
Self-citationGuppy, M. (1988) · Canadian Journal of Zoology · doi:10.1139/z88-160 · Cited by 8
Hyperglycemia Suppresses Lactate Clearance During Exercise in Type 1 Diabetes
ROMERES, D., YADAV, Y. R., RUCHI, F., Carter, R. E., Cobelli, C., Basu, R., & Basu, A. (2024) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/clinem/dgae005 · Cited by 7
A comparative study of interval and continuous incremental training in Thoroughbreds
Bronsart, L. L., Sides, R. H., & Bayly, W. M. (2009) · Comparative Exercise Physiology · doi:10.1017/s1755254009990080 · Cited by 7
Chin, E. R., Lindinger, M. I., & Heigenhauser, G. J. F. (1997) · Canadian Journal of Physiology and Pharmacology · doi:10.1139/cjpp-75-12-1375 · Cited by 8
Chin, E. R., Lindinger, M. I., & Heigenhauser, G. J. F. (1997) · Canadian Journal of Physiology and Pharmacology · doi:10.1139/y97-180 · Cited by 7
Jorge, P. F., Boer, R., Posma, R. A., Harms, K. C., Hiemstra, B., Bens, B. W. J., & Nijsten, M. W. (2021) · BMC Research Notes · doi:10.1186/s13104-021-05604-w · Cited by 6
“Exercise studies demonstrated that—when available— lactate is preferentially consumed in comparison to substrates such as glucose [3, 6, 7].”
BackgroundSchneider, L., Chalmers, D., O’Beirn, S., Greenberg, M., & Cave, G. (2022) · Scientific Reports · doi:10.1038/s41598-022-25253-8 · Cited by 6
Takahashi, K., Mukai, K., Takahashi, Y., Ebisuda, Y., Hatta, H., & Kitaoka, Y. (2024) · Journal of Experimental Biology · doi:10.1242/jeb.246896 · Cited by 6
Dileo, T. D., Powell, J. B., Kang, H. K., Roberge, R. J., Coca, A., & Kim, J.-H. (2016) · PubMed · Cited by 6
In Vivo and In Vitro Quantification of Glucose Kinetics: From Bedside to Bench
Kim, I., Park, S., Kim, Y., Chang, Y., Choi, C. S., Suh, S., & Wolfe, R. R. (2020) · Endocrinology and Metabolism · doi:10.3803/enm.2020.406 · Cited by 6
The maximum lactate clearance: A new concept to approach the endurance level of an athlete
Francaux, M., Jacqmin, P. A., & Sturbois, X. (1993) · Archives of Physiology and Biochemistry · doi:10.3109/13813459308998130 · Cited by 6
Variations in lactate apparent clearance during rest and exercise in normal man
Francaux, M., Jacqmin, P. A., Sturbois, X., & Sturbois, P. X. (1993) · Archives of Physiology and Biochemistry · doi:10.3109/13813459309003929 · Cited by 6
Ammonium Ion and the Anaerobic Threshold in Man
Systrom, D. M., Fragoso, C. V., Kanarek, D. J., et al. (1991) · CHEST Journal · doi:10.1378/chest.99.5.1197 · Cited by 6
송윤경, Suh, S., & Jeon, J. Y. (2017) · Korean Journal of Sport Science · doi:10.24985/kjss.2017.28.1.1 · Cited by 5
Francaux, M., Jacqmin, P. A., & Sturbois, X. (1989) · Archives Internationales de Physiologie et de Biochimie · doi:10.3109/13813458909075063 · Cited by 5
Bloch, G., Jouvensal, L., & Carlier, P. G. (1995) · Magnetic Resonance in Medicine · doi:10.1002/mrm.1910340312 · Cited by 5
Effects of conditioning on the left ventricular function of young purebred Arabian horses
Ramos, G. V., Santos, M. M., Gava, F. N., et al. (2024) · PLoS ONE · doi:10.1371/journal.pone.0304724 · Cited by 4
A MATHEMATICAL MODEL FOR TRAINING IMPULSE AND LACTATE INFLUX AND OUTFLUX DURING EXERCISE
Moxnes, J. F., & Hausken, K. (2009) · International Journal of Modern Physics C · doi:10.1142/s0129183109013522 · Cited by 4
Horswill, C. A. (2000) · Nutrition in exercise and sport · doi:10.1201/9781420037180.ch9 · Cited by 4
Application of modeling to lactate kinetics in exercise.
Fukuba, Y. (1990) · The Annals of physiological anthropology · doi:10.2114/ahs1983.9.203 · Cited by 4
Kong, J., Yang, Z., Wang, Y., Liu, L., Liu, Y., & Chen, W. (2026) · Molecular Medicine · doi:10.1186/s10020-026-01551-z · Cited by 4
Lactato: De Causa da Fadiga a Suplemento Ergogênico?
Pinto, C. L., Painelli, V. D. S., Lancha, A. H., & Artioli, G. G. (2014) · Revista Brasileira de Ciência e Movimento · doi:10.18511/0103-1716/rbcm.v22n2p173-181 · Cited by 3
Jones, S. A. (2009) · ScholarsArchive (Brigham Young University) · Cited by 2
Sousa, R. A. L. D., dos Santos, J. L., Hugo-Melo, V., et al. (2014) · Scientia Plena · Cited by 3
Takei, N., Takahashi, K., Kakinoki, K., et al. (2018) · The Journal of Physical Fitness and Sports Medicine · doi:10.7600/jpfsm.7.253 · Cited by 3
Le proton: exercice et fatigue
Callier, J., Rouillon, J. D., Rieu, M., & Magnin, P. (1996) · Science & Sports · doi:10.1016/0765-1597(96)81289-5 · Cited by 3
Bock, J. M., Hanson, B. E., Miller, K. A., Seaberg, N. T., Ueda, K., Feider, A. J., Hanada, S., Lira, V. A., & Casey, D. P. (2022) · Journal of Applied Physiology · doi:10.1152/japplphysiol.00478.2022 · Cited by 2
Estimación del gasto energético en actividades de corta duración y alta intensidad
Montaner, B. H. V., & Gómez-Puerto, J. R. (2012) · Revista Andaluza de Medicina del Deporte · doi:10.1016/s1888-7546(12)70023-0 · Cited by 2
Recovery levels after eccentric and concentric loading in maximal force
Örer, G. E., Güzel, N. A., & Arslan, E. (2016) · Journal of Physical Therapy Science · doi:10.1589/jpts.28.1743 · Cited by 2
Muscle Fuel Utilization with Glycolysis Viewed Right Side Up
Brooks, G. A. (2025) · Advances in experimental medicine and biology · doi:10.1007/978-3-031-88361-3_1 · Cited by 2
Self-citationThe Mader model of muscle energy metabolism simulates key metabolic exercise phenomena
Rothschild, J. A., Dunst, A. K., Axsom, J., Wackerhage, H., & Heck, H. (2026) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.2525555123 · Cited by 1
What Do We Know of Human Fuel Use during Aerobic Exercise, and How Do We Know It?
Axsom, J., & Arany, Z. P. (2025) · Physiology · doi:10.1152/physiol.00002.2025 · Cited by 3
Lactate Shuttling and the Mitochondrial Lactate Oxidation Complex
Brooks, G. A. (2012) · Oxidative stress and disease · doi:10.1201/b12308-10 · Cited by 3
Self-citationRegulation of Glycemia and Energy Substrate Partitioning in Exercising Humans
Emhoff, C. W. (2013) · eScholarship (California Digital Library) · Cited by 1
İSKELET ve KALP KASLARINDA LAKTİK ASİTİN TAŞINIMI: MONOKARBOKSİL TAŞIYICI PROTEİNLER BÖLÜM I
Hazır, T., & Açıkada, C. (2005) · Spor Bilimleri Dergisi Hacettepe Üniversitesi · doi:10.17644/sbd.07956
Lactate musculaire chez le rat: méthode de dosage simplifiée
Duvallet, A., Verdier, J. C., Serrurier, B., et al. (1989) · Science & Sports · doi:10.1016/s0765-1597(89)80044-9
The relationship between an increased aerobic power and the excess post exercise oxygen consumption
Cannon, E. W. (2009) · cIRcle (University of British Columbia) · doi:10.14288/1.0077062
“Type I fibers have in fact been shown to possess the respiratory capacity sufficient to oxidize large quantities of lactate (Bonen and Belcastro, 1976; Brooks, 1986; Mazzeo et al., 1986; Stanley, 1991).”
Backgroundmonocarboxylate transporter MCT1 Cardiac and skeletal muscle mitochondria have a
Brooks, G. A., Brown, M. A., Butz, C. E., Sicurello, J. P., Hashimoto, T., Hussien, R., Oommen, S., Gohil, K., Kane, D. A., Elustondo, P. A., et al. (2015)
Self-citationBrooks, G. A., Friedlander, A. L., Casazza, G. A., Ušaj, A., Møller, N., Nielsen, S. L., Jessen, N., Otto, J., Bibby, B. M., Vissing, K., et al. (2015)
Self-citationadministrationprogressive exercise to fatigue after Acz
Paterson, D. H., Kowalchuk, J. M., Smith, S. A., et al. (2015)
Rosenau, L. W. (1987) · ThinkTech (Texas Tech University)
Estimación del gasto energético en actividades de corta duración y alta
Viana-Montaner, B. H. (2013)
Lactate, A Phoenix Rising in Contemporary BiologyPreprint
Brooks, G. A. (2020) · Preprints.org · doi:10.20944/preprints202009.0299.v1
Self-citationBiology and Medicine Division: Annual report 1986
Lab., C. (. S. L. B. (1987) · doi:10.2172/5594908
Park, S., Cha, H.-N., Shin, M., et al. (2024) · doi:10.2337/figshare.25665438.v1
Park, S., Cha, H.-N., Shin, M., et al. (2024) · doi:10.2337/figshare.25665438
Park, S., Cha, H.-N., Shin, M., et al. (2024) · doi:10.2337/figshare.25665438.v2
Blood lactate steady state during interval training: new perspectives on something already known
Mazza, J. C., Festa, R. R., Gurovich, A. N., & Jannas-Vela, S. (2024) · International journal of exercise science · doi:10.70252/ufgu3343
“During continuous and incremental exercise, lactate appearance and disappearance rates (i.e., lactate turnover); can increase BLa levels up to 4-5 mmol/L (28) and to ~10 mmol/L (37), respectively.”
BackgroundLactate Transport and Exchange During Exercise
Gladden, L. B. (1995) · Comprehensive physiology · doi:10.1002/j.2040-4603.1995.tb01711.x
The Stress Response, Stress Hyperglycemia and Stress Hyperlactemia
Marik, P. E. (2014) · Springer eBooks · doi:10.1007/978-3-319-11020-2_13 · Cited by 1
Jorge, P. F., Boer, R., Posma, R. A., Harms, K. C., Hiemstra, B., Bens, B. W. J., & Nijsten, M. W. (2021) · Figshare · doi:10.6084/m9.figshare.14594460
Effets des facteurs matériels sur le développement de la fatigue neuromusculaire en tennis
Fabre, J.-B. (2014) · theses.fr (ABES) · doi:10.70675/003443d6z700az48ceza8d1zff5dfd410e12
Lactate Biology: Subcellular Routing and Chemical Form Define Function
Offei, N. A., & Cluntun, A. A. (2026) · Biochemistry · doi:10.1021/acs.biochem.6c00251 · Cited by 1
Plasma Lactate Accumulation During Running with Body Weight Unloading by LBPP
Rasmussen, N. N. (2013) · ScholarsArchive (Brigham Young University)
Metadata
- Authors
- Mazzeo, R. S., Brooks, G. A., Schoeller, D. A., & Budinger, T. F.
- Venue
- Journal of Applied Physiology
- Publisher
- American Physiological Society
- Published
- 1986-01-01
- Volume
- 60
- Issue
- 1
- Pages
- 232-241
- ISSN
- 0161-7567 (ISSN-L)
- 8750-7587
- 1522-1601
- OpenAlex
- W1952016433
- Cited by
- 189
- References
- 0
- Citations by year
- 2026: 4 · 2025: 2 · 2024: 13 · 2023: 1 · 2022: 8 · 2021: 9 · 2020: 10 · 2019: 3 · 2018: 3 · 2017: 3 · 2016: 8 · 2015: 7 · 2014: 10 · 2013: 9 · 2012: 8
- FWCI
- 12.43
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Applied Physiology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Institutes of Health (AM-195 77)
- Topics
- Health Sciences › Medicine › Physiology (medical) › Cardiovascular and exercise physiology
- Health Sciences › Nursing › Nutrition and Dietetics › Muscle metabolism and nutrition
- Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
- Keywords
- blood lactate, lactate oxidation, physical activity, oxygen consumption, blood lactate concentration, metabolic rate, acid-base status, cycling exercise
- MeSH terms
- Adult, Bicarbonates, Blood Glucose, Carbon Dioxide, Carbon Isotopes, Physical Exertion, Homeostasis, Humans, Lactates, Male, Metabolic Clearance Rate, Oxidation-Reduction, Oxygen Consumption, Respiration, Rest
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