MedTrace Logo

Haptoglobin Polymorphism as a Determinant of Adverse Outcome After Cardiac Surgery in Diabetic Patients

NCT02771808 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 83

Last updated 2016-05-13

No results posted yet for this study

Summary

Specific aim 1a will test the hypothesis that diabetic patients with 2-2 haptoglobin genotype have higher indices of postoperative myocardial injury (creatine kinase MB isoenzyme , Troponin I ) and renal injury (as indicated by elevated creatinine, cytostatin C and glomerular filtration rate). Of note, significantly elevated levels (\>5 times the upper normal limit) of creatine kinase MB isoenzyme and troponins postoperatively have been associated with postoperative myocardial ischemia/infarction and are a predictor of short-term and long-term mortality after cardiac surgery.

Specific aim 1b will evaluate preoperative and postoperative indices of oxidative stress (such as isoprostane f2 alpha and malondialdehyde) and will evaluate whether patients with type 2-2 haptoglobin express increased oxidative stress. The investigators will also try to correlate whether patients with increased oxidative stress are those with elevated indices of myocardial and/or renal injury Specific aim 1c will try to evaluate whether patients with type 2-2 haptoglobin also have increased levels of inflammatory indices (C-reactive protein,\[interleukin\] IL-1, IL-2, IL-6, TNF\[tumor necrosis factor\]) and try to correlate the findings with postoperative myocardial and or renal injury.

The incidence of atrial fibrillation after coronary artery bypass graft ranges from 19% to 27%. The investigators will also look at any correlation of the type 2-2 haptoglobin and the incidence of post-operative atrial fibrillation.

Conditions

Interventions

OTHER

biomarker samples

biomarker samples for haptoglobin genotype (RT-PCR) and phenotype (hemoglobin electrophoresis) general markers for oxidative stress (isoprostane f2 alpha, malondialdehyde) markers of inflammation (CRP, IL-1, 2, 6, 10 and TNF) markers of cardiac injury (CPK, troponins and BNP) markers of kidney injury (cystatin C, creatinine, GFR)

Sponsors & Collaborators

  • International Anesthesia Research Society (IARS)

    collaborator OTHER

  • University of Virginia

    lead OTHER

Principal Investigators

  • Jacob Raphael, MD · UVA Anesthesiology

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2010-09-30
Primary Completion
2015-05-31
Completion
2015-05-31

Countries

  • United States

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02771808 on ClinicalTrials.gov