The selective poly(ADP)ribose-polymerase 1 inhibitor INO1001 reduces spinal cord injury during porcine aortic cross-clamping-induced ischemia/reperfusion injury

Christian Maier, Angelika Scheuerle, Balázs Hauser, Hubert Schelzig, Csaba Szabo, Peter Radermacher, Jochen Kick

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Objective: It is well-established that poly(ADP)ribose-polymerase (PARP) assumes major importance during ischemic brain damage, and the selective PARP-1 inhibitor PJ34 reduced spinal cord damage in murine aortic occlusion-induced ischemia/reperfusion injury. We investigated the effect of the PARP-1 inhibitor INO1001 on aortic-occlusion-related porcine spinal cord injury. Design and setting: Prospective, randomized, controlled experimental study in an animal laboratory. Patients and participants: Ten anesthetized, mechanically ventilated, and instrumented pigs. Interventions: Animals underwent 45 min of thoracic aortic cross-clamping after receiving vehicle (n = 5) or intravenous INO1001 (n = 5, total dose 4 mg/kg administered both before clamping and during reperfusion). During reperfusion continuous intravenous norepinephrine was incrementally adjusted to maintain blood pressure at or above 80% of the preclamping level. Plasma INO1001 levels were analyzed by HPLC. After 4 h of reperfusion spinal cord biopsy samples were analyzed for neuronal damage (hematoxyline-eosine and Nissl staining), expression of the cyclin-dependent kinase inhibitor genes p21 and p27 (immunohistochemistry), and apoptosis (terminal deoxynucleotidyl transferase mediated nick end labeling assay). Measurements and results: Plasma INO1001 levels were 0.8-2.3 and 0.30-0.76 mM before and after clamping, respectively. While 3-5% of the spinal cord neurons were irreversibly damaged in the INO1001 animals, the neuronal cell injury was three times higher in the control group. Neither p21 and p27 expression nor apoptosis showed any intergroup difference. Conclusions: The selective PARP-1 inhibitor INO1001 markedly reduced aortic occlusion-induced spinal cord injury. Given the close correlation reported in the literature between morphological damage and impaired spinal cord function, INO1001 may improve spinal cord recovery after thoracic aortic cross-clamping.

Original languageEnglish (US)
Pages (from-to)845-850
Number of pages6
JournalIntensive Care Medicine
Volume33
Issue number5
DOIs
StatePublished - May 2007
Externally publishedYes

Fingerprint

Reperfusion Injury
Spinal Cord Injuries
Constriction
Swine
Spinal Cord
Reperfusion
Thorax
Cyclin-Dependent Kinase Inhibitor p21
Cyclin-Dependent Kinase Inhibitor p27
Apoptosis
DNA Nucleotidylexotransferase
Poly(ADP-ribose) Polymerases
Laboratory Animals
Eosine Yellowish-(YS)
INO 1001
Poly (ADP-Ribose) Polymerase-1
Poly(ADP-ribose) Polymerase Inhibitors
Norepinephrine
Immunohistochemistry
High Pressure Liquid Chromatography

Keywords

  • Aortic cross-clamping
  • Cyclin dependent kinase inhibitor gene
  • Nissl staining
  • p21, p27
  • Poly(ADP)ribose-polymerase 1
  • Spinal cord

ASJC Scopus subject areas

  • Critical Care and Intensive Care Medicine

Cite this

The selective poly(ADP)ribose-polymerase 1 inhibitor INO1001 reduces spinal cord injury during porcine aortic cross-clamping-induced ischemia/reperfusion injury. / Maier, Christian; Scheuerle, Angelika; Hauser, Balázs; Schelzig, Hubert; Szabo, Csaba; Radermacher, Peter; Kick, Jochen.

In: Intensive Care Medicine, Vol. 33, No. 5, 05.2007, p. 845-850.

Research output: Contribution to journalArticle

Maier, Christian ; Scheuerle, Angelika ; Hauser, Balázs ; Schelzig, Hubert ; Szabo, Csaba ; Radermacher, Peter ; Kick, Jochen. / The selective poly(ADP)ribose-polymerase 1 inhibitor INO1001 reduces spinal cord injury during porcine aortic cross-clamping-induced ischemia/reperfusion injury. In: Intensive Care Medicine. 2007 ; Vol. 33, No. 5. pp. 845-850.
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abstract = "Objective: It is well-established that poly(ADP)ribose-polymerase (PARP) assumes major importance during ischemic brain damage, and the selective PARP-1 inhibitor PJ34 reduced spinal cord damage in murine aortic occlusion-induced ischemia/reperfusion injury. We investigated the effect of the PARP-1 inhibitor INO1001 on aortic-occlusion-related porcine spinal cord injury. Design and setting: Prospective, randomized, controlled experimental study in an animal laboratory. Patients and participants: Ten anesthetized, mechanically ventilated, and instrumented pigs. Interventions: Animals underwent 45 min of thoracic aortic cross-clamping after receiving vehicle (n = 5) or intravenous INO1001 (n = 5, total dose 4 mg/kg administered both before clamping and during reperfusion). During reperfusion continuous intravenous norepinephrine was incrementally adjusted to maintain blood pressure at or above 80{\%} of the preclamping level. Plasma INO1001 levels were analyzed by HPLC. After 4 h of reperfusion spinal cord biopsy samples were analyzed for neuronal damage (hematoxyline-eosine and Nissl staining), expression of the cyclin-dependent kinase inhibitor genes p21 and p27 (immunohistochemistry), and apoptosis (terminal deoxynucleotidyl transferase mediated nick end labeling assay). Measurements and results: Plasma INO1001 levels were 0.8-2.3 and 0.30-0.76 mM before and after clamping, respectively. While 3-5{\%} of the spinal cord neurons were irreversibly damaged in the INO1001 animals, the neuronal cell injury was three times higher in the control group. Neither p21 and p27 expression nor apoptosis showed any intergroup difference. Conclusions: The selective PARP-1 inhibitor INO1001 markedly reduced aortic occlusion-induced spinal cord injury. Given the close correlation reported in the literature between morphological damage and impaired spinal cord function, INO1001 may improve spinal cord recovery after thoracic aortic cross-clamping.",
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AU - Scheuerle, Angelika

AU - Hauser, Balázs

AU - Schelzig, Hubert

AU - Szabo, Csaba

AU - Radermacher, Peter

AU - Kick, Jochen

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AB - Objective: It is well-established that poly(ADP)ribose-polymerase (PARP) assumes major importance during ischemic brain damage, and the selective PARP-1 inhibitor PJ34 reduced spinal cord damage in murine aortic occlusion-induced ischemia/reperfusion injury. We investigated the effect of the PARP-1 inhibitor INO1001 on aortic-occlusion-related porcine spinal cord injury. Design and setting: Prospective, randomized, controlled experimental study in an animal laboratory. Patients and participants: Ten anesthetized, mechanically ventilated, and instrumented pigs. Interventions: Animals underwent 45 min of thoracic aortic cross-clamping after receiving vehicle (n = 5) or intravenous INO1001 (n = 5, total dose 4 mg/kg administered both before clamping and during reperfusion). During reperfusion continuous intravenous norepinephrine was incrementally adjusted to maintain blood pressure at or above 80% of the preclamping level. Plasma INO1001 levels were analyzed by HPLC. After 4 h of reperfusion spinal cord biopsy samples were analyzed for neuronal damage (hematoxyline-eosine and Nissl staining), expression of the cyclin-dependent kinase inhibitor genes p21 and p27 (immunohistochemistry), and apoptosis (terminal deoxynucleotidyl transferase mediated nick end labeling assay). Measurements and results: Plasma INO1001 levels were 0.8-2.3 and 0.30-0.76 mM before and after clamping, respectively. While 3-5% of the spinal cord neurons were irreversibly damaged in the INO1001 animals, the neuronal cell injury was three times higher in the control group. Neither p21 and p27 expression nor apoptosis showed any intergroup difference. Conclusions: The selective PARP-1 inhibitor INO1001 markedly reduced aortic occlusion-induced spinal cord injury. Given the close correlation reported in the literature between morphological damage and impaired spinal cord function, INO1001 may improve spinal cord recovery after thoracic aortic cross-clamping.

KW - Aortic cross-clamping

KW - Cyclin dependent kinase inhibitor gene

KW - Nissl staining

KW - p21, p27

KW - Poly(ADP)ribose-polymerase 1

KW - Spinal cord

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