Aberrations in Carnitine Homeostasis in Congenital Heart Disease With Increased Pulmonary Blood Flow

NCT01825369 | Withdrawn Phase 1 DMC

• 1 other identifier: FinemanCarnitine
• Study Type: interventional
• Target: N/A
• Locations: 1 country
• Sites: 1

Brief Summary

Infants with congenital heart disease and increased pulmonary blood flow have altered carnitine homeostasis that is associated with clinical outcomes; and L-carnitine treatment will attenuate these alterations and improve clinical outcomes. The investigators will pilot a trial assessing the safety and pharmacokinetics of perioperative IV L-carnitine administration in these patients. To this end, a pilot clinical trial is proposed. Infants with ventricular septal defects or atrioventricular septal defects undergoing complete surgical repair will receive L-carnitine (25, 50, or 100 mg/kg, IV) just prior to cardiopulmonary bypass (CPB) and 2hr after CPB. Carnitine levels will be measured before CPB, and before and 0.5, 1.5, 3, 5, 9, 12, and 24h after the second dose. The safety, pharmacokinetic profile, feasibility, and effect of L-carnitine administration on biochemical parameters, as well as clinical outcomes will be determined. The investigators expect this pilot to provide the data needed to proceed with a placebo-based randomized, controlled, trial.

Conditions

Heart Septal Defects, Ventricular; Atrioventricular Septal Defect

Keywords

congenital heart disease; ventricular septal defect; atrioventricular septal defect; increased pulmonary blood flow; nitric oxide

Outcome Measures

Primary Outcomes (1)

• Blood carnitine level (free, total, and acylcarnitine)

  At enrollment (first dose), and again 24 and 48 hrs after enrollment. 2 hours after enrollment (at time of second dose) and 0.5, 1.5, 3, 5, 9, 12, and 24h after the second dose.

Secondary Outcomes (13)

• Bioavailable nitric oxide

  At enrollment (first dose), and again 24 and 48 hrs after enrollment.

• Plasma levels of superoxide

  At enrollment (first dose), and again 24 and 48 hrs after enrollment.

• Carnitine Palmityl Transporter-1 and -2 expression

  At enrollment (first dose), and again 24 and 48 hrs after enrollment.

• Cardiopulmonary bypass

  Participants will be followed for the duration of hospital stay, an expected average of 2 weeks

• Echocardiographic measurements

  Participants will be followed for the duration of hospital stay, an expected average of 2 weeks

Study Arms (1)

IV L-carnitine

EXPERIMENTAL

L-carnitine (25, 50, or 100mg/kg IV) will be given, 30-60 minutes prior to the initiation of CPB, and a second dose \~2 hr. following separation from CPB (with a minimum of 4 hrs from initial dose). The first 5 subjects will receive 25 mg/kg, with an escalation of dose after each 5 subjects enrolled. The study drug will be brought to the operating room and administered over 5 minutes by the anesthesiologist after an IV has been placed. Prior to the administration of the study drug, and again 24 and 48 hrs after CPB, 3.0 ml of blood will be collected for determinations of carnitine levels (free, total, and acylcarnitine), mitochondrial function, ROS and bioavailable NO as described in Aim 3A. Additional blood (0.5-1.0 ml) will be obtained to determine carnitine levels before CPB, and then before and 0.5, 1.5, 3, 5, 9, 12, and 24h after the second dose.

Drug: IV L-carnitine

Interventions

IV L-carnitine DRUG

See arm description

IV L-carnitine

Eligibility Criteria

• Age: 2 Months - 12 Months
• Sex: all
• Healthy Volunteers: No
• Age Groups: Child (0-17)

You may qualify if:

• have unrestrictive VSD, AVSD
• are undergoing complete repair
• are between 2-12 months of age
• are corrected gestational age ≥34 weeks
• will have an indwelling arterial or venous line
• have not had enteral or parenteral nutrition for at least 6 hrs

You may not qualify if:

• have body weight \< 2.0 kg
• pulmonary artery or vein abnormalities not being addressed surgically
• suspected or proven in-born error of metabolism
• have other major congenital abnormalities that affect the cardiopulmonary system
• are taking carnitine supplementation

Sponsors & Collaborators

• University of California, San Francisco: lead

Study Sites (1)

University of California San Francisco

San Francisco, California, 94143-0106, United States

Location

Related Publications (15)

• Ghorishi Z, Milstein JM, Poulain FR, Moon-Grady A, Tacy T, Bennett SH, Fineman JR, Eldridge MW. Shear stress paradigm for perinatal fractal arterial network remodeling in lambs with pulmonary hypertension and increased pulmonary blood flow. Am J Physiol Heart Circ Physiol. 2007 Jun;292(6):H3006-18. doi: 10.1152/ajpheart.01012.2006. Epub 2007 Feb 16.

  PMID: 17308003 BACKGROUND

• Black SM, Kumar S, Wiseman D, Ravi K, Wedgwood S, Ryzhov V, Fineman JR. Pediatric pulmonary hypertension: Roles of endothelin-1 and nitric oxide. Clin Hemorheol Microcirc. 2007;37(1-2):111-20.

  PMID: 17641401 BACKGROUND

• Sharma S, Grobe AC, Wiseman DA, Kumar S, Englaish M, Najwer I, Benavidez E, Oishi P, Azakie A, Fineman JR, Black SM. Lung antioxidant enzymes are regulated by development and increased pulmonary blood flow. Am J Physiol Lung Cell Mol Physiol. 2007 Oct;293(4):L960-71. doi: 10.1152/ajplung.00449.2006. Epub 2007 Jul 13.

  PMID: 17631609 BACKGROUND

• Lakshminrusimha S, Wiseman D, Black SM, Russell JA, Gugino SF, Oishi P, Steinhorn RH, Fineman JR. The role of nitric oxide synthase-derived reactive oxygen species in the altered relaxation of pulmonary arteries from lambs with increased pulmonary blood flow. Am J Physiol Heart Circ Physiol. 2007 Sep;293(3):H1491-7. doi: 10.1152/ajpheart.00185.2007. Epub 2007 May 18.

  PMID: 17513498 BACKGROUND

• Oishi P, Sharma S, Grobe A, Azakie A, Harmon C, Johengen MJ, Hsu JH, Fratz S, Black SM, Fineman JR. Alterations in cGMP, soluble guanylate cyclase, phosphodiesterase 5, and B-type natriuretic peptide induced by chronic increased pulmonary blood flow in lambs. Pediatr Pulmonol. 2007 Nov;42(11):1057-71. doi: 10.1002/ppul.20696.

  PMID: 17902145 BACKGROUND

• Sud N, Sharma S, Wiseman DA, Harmon C, Kumar S, Venema RC, Fineman JR, Black SM. Nitric oxide and superoxide generation from endothelial NOS: modulation by HSP90. Am J Physiol Lung Cell Mol Physiol. 2007 Dec;293(6):L1444-53. doi: 10.1152/ajplung.00175.2007. Epub 2007 Sep 7.

  PMID: 17827253 BACKGROUND

• Oishi PE, Wiseman DA, Sharma S, Kumar S, Hou Y, Datar SA, Azakie A, Johengen MJ, Harmon C, Fratz S, Fineman JR, Black SM. Progressive dysfunction of nitric oxide synthase in a lamb model of chronically increased pulmonary blood flow: a role for oxidative stress. Am J Physiol Lung Cell Mol Physiol. 2008 Nov;295(5):L756-66. doi: 10.1152/ajplung.00146.2007. Epub 2008 Aug 29.

  PMID: 18757524 BACKGROUND

• Sharma S, Sud N, Wiseman DA, Carter AL, Kumar S, Hou Y, Rau T, Wilham J, Harmon C, Oishi P, Fineman JR, Black SM. Altered carnitine homeostasis is associated with decreased mitochondrial function and altered nitric oxide signaling in lambs with pulmonary hypertension. Am J Physiol Lung Cell Mol Physiol. 2008 Jan;294(1):L46-56. doi: 10.1152/ajplung.00247.2007. Epub 2007 Nov 16.

  PMID: 18024721 BACKGROUND

• Kumar S, Sun X, Sharma S, Aggarwal S, Ravi K, Fineman JR, Black SM. GTP cyclohydrolase I expression is regulated by nitric oxide: role of cyclic AMP. Am J Physiol Lung Cell Mol Physiol. 2009 Aug;297(2):L309-17. doi: 10.1152/ajplung.90538.2008. Epub 2009 May 15.

  PMID: 19447893 BACKGROUND

• Sharma S, Kumar S, Sud N, Wiseman DA, Tian J, Rehmani I, Datar S, Oishi P, Fratz S, Venema RC, Fineman JR, Black SM. Alterations in lung arginine metabolism in lambs with pulmonary hypertension associated with increased pulmonary blood flow. Vascul Pharmacol. 2009 Nov-Dec;51(5-6):359-64. doi: 10.1016/j.vph.2009.09.005. Epub 2009 Oct 8.

  PMID: 19818875 BACKGROUND

• Tian J, Smith A, Nechtman J, Podolsky R, Aggarwal S, Snead C, Kumar S, Elgaish M, Oishi P, Goerlach A, Fratz S, Hess J, Catravas JD, Verin AD, Fineman JR, She JX, Black SM. Effect of PPARgamma inhibition on pulmonary endothelial cell gene expression: gene profiling in pulmonary hypertension. Physiol Genomics. 2009 Dec 30;40(1):48-60. doi: 10.1152/physiolgenomics.00094.2009. Epub 2009 Oct 13.

  PMID: 19825830 BACKGROUND

• Aggarwal S, Gross C, Fineman JR, Black SM. Oxidative stress and the development of endothelial dysfunction in congenital heart disease with increased pulmonary blood flow: lessons from the neonatal lamb. Trends Cardiovasc Med. 2010 Oct;20(7):238-46. doi: 10.1016/j.tcm.2011.11.010.

  PMID: 22293025 BACKGROUND

• Sharma S, Kumar S, Wiseman DA, Kallarackal S, Ponnala S, Elgaish M, Tian J, Fineman JR, Black SM. Perinatal changes in superoxide generation in the ovine lung: Alterations associated with increased pulmonary blood flow. Vascul Pharmacol. 2010 Jul-Aug;53(1-2):38-52. doi: 10.1016/j.vph.2010.03.005. Epub 2010 Mar 31.

  PMID: 20362073 BACKGROUND

• Aggarwal S, Gross CM, Kumar S, Datar S, Oishi P, Kalkan G, Schreiber C, Fratz S, Fineman JR, Black SM. Attenuated vasodilatation in lambs with endogenous and exogenous activation of cGMP signaling: role of protein kinase G nitration. J Cell Physiol. 2011 Dec;226(12):3104-13. doi: 10.1002/jcp.22692.

  PMID: 21351102 BACKGROUND

• Sharma S, Sun X, Kumar S, Rafikov R, Aramburo A, Kalkan G, Tian J, Rehmani I, Kallarackal S, Fineman JR, Black SM. Preserving mitochondrial function prevents the proteasomal degradation of GTP cyclohydrolase I. Free Radic Biol Med. 2012 Jul 15;53(2):216-29. doi: 10.1016/j.freeradbiomed.2012.03.016. Epub 2012 Apr 16.

  PMID: 22583703 BACKGROUND

MeSH Terms

Conditions

Heart Septal Defects, Ventricular; Atrioventricular Septal Defect; Heart Defects, Congenital

Interventions

Carnitine

Condition Hierarchy (Ancestors)

Heart Septal Defects; Cardiovascular Abnormalities; Cardiovascular Diseases; Heart Diseases; Congenital Abnormalities; Congenital, Hereditary, and Neonatal Diseases and Abnormalities

Intervention Hierarchy (Ancestors)

Trimethyl Ammonium Compounds; Quaternary Ammonium Compounds; Amines; Organic Chemicals

Study Officials

• Jeffrey Fineman, MD

  University of California, San Francisco

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: phase 1
• Allocation: NA
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: March 28, 2013
• First Posted: April 5, 2013
• Study Start: December 1, 2014
• Primary Completion: July 1, 2020
• Study Completion: July 1, 2020
• Last Updated: May 6, 2020

Record last verified: 2020-05

Locations

US (1)