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Original Articles

Relationship of Blood Thromboxane-B2 (TxB2) With Lipid Peroxides and Effect of Vitamin E and Placebo Supplementation on TxB2 and Lipid Peroxide Levels in Type 1 Diabetic Patients

  1. Sushil K Jain, PHD,
  2. K Stephan Krueger, PHD,
  3. Robert McVie, MD,
  4. John J Jaramillo, MD,
  5. Melissa Palmer, MS and
  6. Tiney Smith, RN
  1. Department of Pediatrics, Louisiana State University Medical Center Shreveport, Louisiana
  1. Address correspondence and reprint requests to Dr. Sushil K. Jain, Department of Pediatrics, LSU Medical Center, 1501 Kings Highway, Shreveport, LA 71130.
Diabetes Care 1998 Sep; 21(9): 1511-1516. https://doi.org/10.2337/diacare.21.9.1511
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Abstract

OBJECTIVE To study the effect of vitamin E supplementation on platelet hyperaggregability in type 1 diabetic patients.

RESEARCH DESIGN AND METHODS Written informed consent according to the Institutional Review Board on Human Experimentation guidelines was obtained from diabetic patients (n = 29) and their age-matched normal siblings (n = 21) to participate in this study. Diabetic patients were supplemented with DL-α-tocopherol (vitamin E) capsule (orally, 100 IU/day) or placebo for 3 months in a double-blind clinical trial. Alternate diabetic patients were assigned to vitamin E or placebo during regular visits to the clinic. Fasting blood was collected from each diabetic patient before the start and after the vitamin E or placebo supplementation. Platelet aggregability was assessed by competitive enzyme-linked immunosorbent assay of the blood TxB2 (a stable thromboxane metabolite). Plasma vitamin E and MDA (malondialdehyde, a product of lipid peroxidation) was assessed by high-performance liquid chromatography. Data were analyzed statistically on 12 diabetic patients on vitamin E and 12 on placebo supplementation.

RESULTS Diabetic patients (n = 29) had 62% higher (P < 0.05) levels of TxB2 and 15% higher levels (P < 0.05) of MDA in comparison to normal subjects (n = 21). Plasma TxB2 levels had a significant correlation with MDA levels (r = 0.45, P < 0.02) but not with the HbA1 (r = −0.08), glucose (r = −0.13), duration of diabetes (r = −0.04), or age (r = 0.12) of diabetic patients. Vitamin E supplementation lowered MDA levels by 30% (P < 0.04), TxB2 levels by 51% (P < 0.03), and triglyceride levels by 22% (P < 0.04) in diabetic patients. There were no differences in these parameters before versus after placebo supplementation.

CONCLUSIONS The elevated blood level of TxB2 (hyperaggregability of platelets) is significantly related to the level of lipid peroxidation products (oxidative stress) in type 1 diabetic patients. Supplementation of modest doses of vitamin E (100 IU/day) significantly lowers blood TxB2 and lipid peroxidation products levels in type 1 diabetic patients.

  • Received January 6, 1998.
  • Revision received May 11, 1998.
  • Accepted May 11, 1998.
  • Copyright © 1998 by the American Diabetes Association

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September 1998, 21(9)
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Relationship of Blood Thromboxane-B2 (TxB2) With Lipid Peroxides and Effect of Vitamin E and Placebo Supplementation on TxB2 and Lipid Peroxide Levels in Type 1 Diabetic Patients
Sushil K Jain, K Stephan Krueger, Robert McVie, John J Jaramillo, Melissa Palmer, Tiney Smith
Diabetes Care Sep 1998, 21 (9) 1511-1516; DOI: 10.2337/diacare.21.9.1511

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Relationship of Blood Thromboxane-B2 (TxB2) With Lipid Peroxides and Effect of Vitamin E and Placebo Supplementation on TxB2 and Lipid Peroxide Levels in Type 1 Diabetic Patients
Sushil K Jain, K Stephan Krueger, Robert McVie, John J Jaramillo, Melissa Palmer, Tiney Smith
Diabetes Care Sep 1998, 21 (9) 1511-1516; DOI: 10.2337/diacare.21.9.1511
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