Phase IIb Study of MP4OX in Traumatic Hemorrhagic Shock Patients

Summary

MP4OX is a novel oxygen therapeutic agent being developed as an ischemic rescue therapy to enhance perfusion and oxygenation of tissues at risk during hemorrhagic shock. MP4OX is a pegylated hemoglobin-based colloid. Due to its molecular size and unique oxygen dissociation characteristics, MP4OX targets delivery of oxygen to ischemic tissues. This study will evaluate the safety and efficacy of MP4OX treatment in trauma patients suffering from lactic acidosis due to severe hemorrhagic shock. The study hypothesis is that MP4OX will reverse the lactic acidosis by enhancing perfusion and oxygenation of ischemic tissues and thereby prevent and reduce the duration of organ failure and improve outcome in these patients.

Timeline

Start

2011-05

Primary completion

2012-10

Completion

2012-11

Publications

• Background Young MA, Lohman J, Malavalli A, Vandegriff KD, Winslow RM. Hemospan improves outcome in a model of perioperative hemodilution and blood loss in the rat: comparison with hydroxyethyl starch. J Cardiothorac Vasc Anesth. 2009 Jun;23(3):339-47. doi: 10.1053/j.jvca.2008.08.006. Epub 2008 Oct 22.
• Background Young MA, Riddez L, Kjellstrom BT, Winslow RM. Effect of maleimide-polyethylene glycol hemoglobin (MP4) on hemodynamics and acid-base status after uncontrolled hemorrhage in anesthetized swine: comparison with crystalloid and blood. J Trauma. 2007 Dec;63(6):1234-44. doi: 10.1097/TA.0b013e31815bd7b0.
• Background Young MA, Riddez L, Kjellstrom BT, Bursell J, Winslow F, Lohman J, Winslow RM. MalPEG-hemoglobin (MP4) improves hemodynamics, acid-base status, and survival after uncontrolled hemorrhage in anesthetized swine. Crit Care Med. 2005 Aug;33(8):1794-804. doi: 10.1097/01.ccm.0000172648.55309.13.
• Background Drobin D, Kjellstrom BT, Malm E, Malavalli A, Lohman J, Vandegriff KD, Young MA, Winslow RM. Hemodynamic response and oxygen transport in pigs resuscitated with maleimide-polyethylene glycol-modified hemoglobin (MP4). J Appl Physiol (1985). 2004 May;96(5):1843-53. doi: 10.1152/japplphysiol.00530.2003. Epub 2004 Jan 16.
• Background Vandegriff KD, Winslow RM. Hemospan: design principles for a new class of oxygen therapeutic. Artif Organs. 2009 Feb;33(2):133-8. doi: 10.1111/j.1525-1594.2008.00697.x.
• Background Vandegriff KD, Malavalli A, Mkrtchyan GM, Spann SN, Baker DA, Winslow RM. Sites of modification of hemospan, a poly(ethylene glycol)-modified human hemoglobin for use as an oxygen therapeutic. Bioconjug Chem. 2008 Nov 19;19(11):2163-70. doi: 10.1021/bc8002666.
• Background Svergun DI, Ekstrom F, Vandegriff KD, Malavalli A, Baker DA, Nilsson C, Winslow RM. Solution structure of poly(ethylene) glycol-conjugated hemoglobin revealed by small-angle X-ray scattering: implications for a new oxygen therapeutic. Biophys J. 2008 Jan 1;94(1):173-81. doi: 10.1529/biophysj.107.114314. Epub 2007 Sep 7.
• Background Winslow RM, Lohman J, Malavalli A, Vandegriff KD. Comparison of PEG-modified albumin and hemoglobin in extreme hemodilution in the rat. J Appl Physiol (1985). 2004 Oct;97(4):1527-34. doi: 10.1152/japplphysiol.00404.2004. Epub 2004 Jun 18.
• Background Tsai AG, Cabrales P, Manjula BN, Acharya SA, Winslow RM, Intaglietta M. Dissociation of local nitric oxide concentration and vasoconstriction in the presence of cell-free hemoglobin oxygen carriers. Blood. 2006 Nov 15;108(10):3603-10. doi: 10.1182/blood-2006-02-005272. Epub 2006 Jul 20.
• Background Tsai AG, Vandegriff KD, Intaglietta M, Winslow RM. Targeted O2 delivery by low-P50 hemoglobin: a new basis for O2 therapeutics. Am J Physiol Heart Circ Physiol. 2003 Oct;285(4):H1411-9. doi: 10.1152/ajpheart.00307.2003. Epub 2003 Jun 12.
• Background Olofsson CI, Gorecki AZ, Dirksen R, Kofranek I, Majewski JA, Mazurkiewicz T, Jahoda D, Fagrell B, Keipert PE, Hardiman YJ, Levy H; Study 6084 Clinical Investigators. Evaluation of MP4OX for prevention of perioperative hypotension in patients undergoing primary hip arthroplasty with spinal anesthesia: a randomized, double-blind, multicenter study. Anesthesiology. 2011 May;114(5):1048-63. doi: 10.1097/ALN.0b013e318215e198.
• Background van der Linden P, Gazdzik TS, Jahoda D, Heylen RJ, Skowronski JC, Pellar D, Kofranek I, Gorecki AZ, Fagrell B, Keipert PE, Hardiman YJ, Levy H; 6090 Study Investigators. A double-blind, randomized, multicenter study of MP4OX for treatment of perioperative hypotension in patients undergoing primary hip arthroplasty under spinal anesthesia. Anesth Analg. 2011 Apr;112(4):759-73. doi: 10.1213/ANE.0b013e31820c7b5f. Epub 2011 Feb 11.

Drugs

Indications