ES2574918T3 - Tratamiento de la fatiga muscular - Google Patents

Tratamiento de la fatiga muscular Download PDF

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Publication number
ES2574918T3
ES2574918T3 ES04735029.3T ES04735029T ES2574918T3 ES 2574918 T3 ES2574918 T3 ES 2574918T3 ES 04735029 T ES04735029 T ES 04735029T ES 2574918 T3 ES2574918 T3 ES 2574918T3
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Prior art keywords
diabetes
exercise
patients
pcr
compound
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ES04735029.3T
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Inventor
Kieran Clarke
Michaela Scheuermann-Freestone
Andrew James Murray
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Oxford University Innovation Ltd
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Oxford University Innovation Ltd
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Priority claimed from GB0312603A external-priority patent/GB0312603D0/en
Priority claimed from GB0313760A external-priority patent/GB0313760D0/en
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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/70Carbohydrates; Sugars; Derivatives thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/12Ketones
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/185Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
    • A61K31/19Carboxylic acids, e.g. valproic acid
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/21Esters, e.g. nitroglycerine, selenocyanates
    • A61K31/215Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids
    • A61K31/216Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids of acids having aromatic rings, e.g. benactizyne, clofibrate
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/33Heterocyclic compounds
    • A61K31/395Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/435Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/44Non condensed pyridines; Hydrogenated derivatives thereof
    • A61K31/455Nicotinic acids, e.g. niacin; Derivatives thereof, e.g. esters, amides
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P21/00Drugs for disorders of the muscular or neuromuscular system

Abstract

Un compuesto para su uso en el tratamiento terapéutico de la disfunción muscular del cuerpo humano o animal mediante la administración de un compuesto a un sujeto que reduce los ácidos grasos libres circulantes en el plasma sanguíneo del sujeto, comprendiendo el compuesto un éster de cuerpos cetónicos.

Description

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Datos expresados como media ± ETM. ADP, adenosín difosfato; PCr, fosfocreatina; Pi, fósforo inorgánico; δ(α-β) ATP, diferencias de desplazamiento químico entre los picos de los α-y β-fosfatos del ATP. *, p < 0,05; **, p < 0,01; ***, p < 0,001 vs control.
La Figura 4 muestra ejemplos de espectros músculo esqueléticos antes y al final del protocolo de ejercicio
5 normalizado en un paciente con diabetes tipo 2 y en el tiempo equivalente (5,1 min) de ejercicio en un participante control. En condiciones de reposo, el pH y las concentraciones de PCr (PCr/ATP), ADP libre y fosfato inorgánico músculo esqueléticos eran los mismos en los controles y en los pacientes con diabetes tipo 2 (Tabla 2). Durante el ejercicio, la hidrólisis de la PCr era 2 veces más rápida y la disminución del pH era 3 veces más rápida en los pacientes con diabetes en comparación con los participantes control, pero las velocidades de producción del ADP
10 libre no eran significativamente diferentes (Tabla 2). En todos los participantes, la fatiga aparecía cuando la disminución de la PCr era ~ 50 % (50 ± 4 % en los controles frente a 51 ± 4 % en los diabéticos) y al mismo pH y concentraciones de ADP libre (Tabla 2). Las concentraciones de magnesio libre permanecieron inalteradas durante el ejercicio en todos los participantes (Tabla 2). Tras el ejercicio, la velocidad inicial de recuperación de la PCr era un 25 % menor y los tiempos medios de recuperación de la PCr eran 1,6 veces más largos en los pacientes con
15 diabetes tipo 2 que en los controles, pero los tiempos medios de recuperación del ADP libre eran los mismos (Tabla 2).
Los tiempos de ejercicio se correlacionaban de forma negativa con los niveles de HbA1c (r2 = 0,32; p < 0,01; Figura 5) y los niveles de glucosa en plasma (r2 = 0,23; p < 0,01; correlación no mostrada), pero no había correlaciones con los niveles de ácidos grasos libres o de lactato en plasma. Las velocidades de la hidrólisis de la PCr y la disminución
20 del pH durante el ejercicio no se correlacionaban con ninguna de las concentraciones de los metabolitos en ayunas. Sin embargo, los tiempos medios de recuperación de la PCr se correlacionaban de forma positiva con los niveles de HbA1c (r2 = 0,40; p < 0,001; correlación no mostrada), y las concentraciones de glucosa en plasma (r2 = 0,16; p < 0,05; correlación no mostrada) para todos los participantes, si bien no había correlaciones con las concentraciones de ácidos grasos libres o lactato en plasma.
25 Oxigenación músculo esquelética
En reposo, la saturación de oxígeno en el músculo gastrocnemio era estable y era la misma para ambos grupos, del 68 % en los controles y del 71 % en los diabéticos, y todos los participantes dejaron de hacer ejercicio tras una disminución del 11 % de la oxigenación tisular medida usando NIRS (Tabla 2). El primer paciente diabético dejó de hacer ejercicio al cabo de 3 min (Figura 4), por tanto, durante los 3 primeros minutos de ejercicio, la velocidad de 30 desoxigenación era 3,1 veces más rápida en los pacientes con diabetes tipo 2 que en los controles (Tabla 2), y se correlacionaba con el tiempo de ejercicio (r2 = 0,29, p < 0,01, Figura 5). Análogamente, los tiempos de reoxigenación durante la recuperación tras el ejercicio eran 2,5 veces más largos en los pacientes con diabetes que en los controles (Tabla 2), que se correlacionaban con los niveles de HbA1c (r2 = 0,35; p < 0,01; Figura 5) y con los tiempos medios de recuperación de la PCr (r2 = 0,25; p < 0,01; Figura 5) en todos los participantes, pero no con los niveles
35 de ácidos grasos libres o lactato en plasma.
Los resultados anteriores demuestran que el aumento de los ácidos grasos libres, asociado a la diabetes tipo 2, puede contribuir a la disfunción muscular, particularmente a la disfunción muscular cardíaca. Estos descubrimientos también son relevantes para otros trastornos/afecciones asociados a niveles elevados de ácidos grasos libres, y por ello la reducción de los ácidos grasos libres puede ser un objetivo general en la reducción de la probabilidad de la
40 disfunción muscular, por ejemplo, de la insuficiencia cardíaca.
Referencias
1. Schernthaner G. "Cardiovascular mortality and morbidity in type-2 diabetes mellitus". Diabetes Res Clin Pract. 1996; 31:S3-S13.
2. Taegtmeyer H, McNulty P, Young ME. "Adaptation and maladaptation of the heart in diabetes: Part I. General 45 concepts". Circulation. 2002; 105:1727-1733.
3.
Iribarren C, Karter AJ, Go AS, y col. "Glycemic control and heart failure among adult patients with diabetes". Circulation. 2001; 103:2668-2673.
4.
Rodrigues B, Cam MC, McNeill JH. "Metabolic disturbances in diabetic cardiomyopathy". Mol CellBiochem. 1998;180:53-57.
50 5. Chatham JC, SeymourA-ML. "Cardiac carbohydrate metabolism in Zucker diabetic fatty rats". Cardiovasc Res. 2002; 55:104-112.
6. Sidell RJ, Cole MA, Draper NJ, y col. "Thiazolidinedione treatment normalizes insulin resistance and ischemic injury in the Zucker fatty rat heart". Diabetes. 2002; 51:1110-1117.
7. Stanley WC, Lopaschuk GD, McCormack JG. "Regulation of energy substrate metabolism in the diabetic 55 heart". Cardiovasc Res. 1997;34:25-33.
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Tune JD, Yeh C, Setty S, y col. "Coronary blood flow control is impaired at rest and during exercise in conscious diabetic dogs". Basic Res Cardiol. 2002; 97:248-257.
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Meyer C, Schwaiger M. "Myocardial blood flow and glucose metabolism in diabetes mellitus". Am J Cardiol.
1997; 80:94A-101A. 60 10. lozzo P, Chareonthaitawee P, Rimoldi O, y col. "Mismatch between insulin-mediated glucose uptake and
9
blood flow in the heart of patients with Type II diabetes". Diabetologia 2002; 45:1404-1409.
11. Baron AD, Laakso M, Brechtel G, y col. "Mechanism of insulin resistance in insulin-dependent diabetes mellitus: A major role for reduced skeletal muscle blood flow". J Clin Endocrinol Metab. 1991; 73:637-643.
12. Demir I, Ermis C, Altunbas H, y col. "Serum HbA1c levels and exercise capacity in diabetic patients". Jpn 5 Heart J. 2001; 42:607-616.
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Estacio RO, Regensteiner JG, Wolfel EE, y col. "The association between diabetic complications and exercise capacity in NIDDM patients". Diabetes Care. 1998; 21:291-295.
14.
Crilley JG, Boehm EA, Rajagopalan B, y col. "Magnetic resonance spectroscopy evidence of abnormal cardiac energetics in Xp21 muscular dystrophy". J Am Coll Cardiol. 2000; 36:1953-1958.
10 15. Lodi R, Kemp GJ, Muntoni F, y col. "Reduced cytosolic acidification during exercise suggests defective glycolytic activity in skeletal muscle of patients with Becker muscular dystrophy. An in vivo 31P magnetic resonance spectroscopy study". Brain. 1999; 122:121-130.
16. Veech RL, Lawson JWR, Cornell NW, y col. "Cytosolic phosphorylation potential". J Biol Chem. 1979;
254:6538-6547. 15 17. Madsen PL, Secher NH. "Near-infrared oximetry of the brain". Prog Neurobiol. 1999; 58:541-560.
18.
Neubauer S, Horn M, Cramer M, y col. "Myocardial phosphocreatine-to-ATP ratio is a predictor of mortality in patients with dilated cardiomyopathy". Circulation. 1997; 96:2190-2196.
19.
Boehm EA, Jones BE, Radda GK, y col. "Increased uncoupling proteins and decreased efficiency in the palmitateperfused hyperthyroid rat heart". Am J Physiol. 2001; 280: H977-H983.
20 20. Chatham JC, Gao ZP, Bonen A, y col. "Preferential inhibition of lactate oxidation relative to glucose oxidation in the rat heart following diabetes". Cardiovasc Res. 1999; 43:96-106.
21. Libby P, Plutzky J. "Diabetic macrovascular disease. The glucose paradox?" Circulation. 2002; 106:27602763.
22. Mahler RJ, Adler ML. "Type 2 diabetes mellitus: update on diagnosis, pathophysiology, and treatment". J Clin 25 Endocrinol Metab. 1999; 84:1165-1171.
23. Komiyama T, Shigematsu H, Yasuhara H, y col. "Near-infrared spectroscopy grades the severity of intermittent claudication in diabetes more accurately than ankle pressure measurement". Br J Surg. 2000; 87:459
466.
10

Claims (1)

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ES04735029.3T 2003-06-02 2004-05-27 Tratamiento de la fatiga muscular Active ES2574918T3 (es)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB0312603 2003-06-02
GB0312603A GB0312603D0 (en) 2003-06-02 2003-06-02 Method
GB0313760 2003-06-13
GB0313760A GB0313760D0 (en) 2003-06-13 2003-06-13 Method
PCT/GB2004/002286 WO2004105742A1 (en) 2003-06-02 2004-05-27 Treatment of muscle fatigue

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ES2574918T3 true ES2574918T3 (es) 2016-06-23

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US (1) US20060078596A1 (es)
EP (1) EP1641444B1 (es)
DK (1) DK1641444T3 (es)
ES (1) ES2574918T3 (es)
WO (1) WO2004105742A1 (es)

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EP1641444B1 (en) 2016-03-23
US20060078596A1 (en) 2006-04-13
WO2004105742A1 (en) 2004-12-09
DK1641444T3 (en) 2016-06-27
EP1641444A1 (en) 2006-04-05

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