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Almond Dose Response Study.

This study has been completed.
Information provided by:
University of Toronto Identifier:
First received: July 24, 2007
Last updated: July 25, 2007
Last verified: July 2007
To assess the effects of almonds on coronary heart disease (CHD) risk factors (serum lipids, measurements of oxidative stress and nitric oxide production) when added to the diets of subjects with high cholesterol. Also, to assess whether the amount of almonds consumed (i.e. almond dose) decreases CHD risk factors in a dose dependent manner. We hypothesize that since almonds have been shown to reduce serum lipids, we believe they will also increase nitric oxide levels related to their high levels of arginine and reduce markers of oxidative stress related to their content of bioactive phenolics. We anticipate that a dose-dependent relationship will be observed resulting in greater reductions in risk factors for coronary heart disease when greater doses of almonds are consumed.

Condition Intervention Phase
Diet Therapy
Cardiovascular Disease
Procedure: Full dose almonds
Procedure: Half dose almonds+half dose muffin
Procedure: Full dose whole wheat muffin
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Single Blind
Primary Purpose: Treatment
Official Title: The Effect of Almonds on Coronary Heart Disease Risk Factors: Dose Response Study.

Further study details as provided by University of Toronto:

Primary Outcome Measures:
  • Lipids: Total Cholesterol, LDL cholesterol, HDL cholesterol, triglycerides, apolipoproteins B and AI
  • Glycemic control: Glucose, insulin, C-peptide (blood and urine).

Secondary Outcome Measures:
  • Clotting Factors: fibrinogen, tissue plasminogen activator, plasminogen activator inhibitor, urokinase, factor VII and factor VIII.
  • Oxidative Stress: Oxidized LDL-C as conjugated dienes in isolated LDL-C fraction, serum carotenoids, vitamin E, vitamin A; 8-hydroxy-2-deoxyguanosine (8-HDG) in isolated blood lymphocytes; malondialdehyde (MDA); urinary isoprostanes.
  • Nitric Oxide: Pulmonary (expired air) NO measured as a marker of whole body NO production and olfactory epithelial NO production in perfused nasal air.

Enrollment: 27
Study Start Date: December 1999
Study Completion Date: September 2001
  Show Detailed Description


Ages Eligible for Study:   40 Years to 70 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Men and post-menopausal women
  • LDL-C >4.1 mmol/L at recruitment, aged 40-70, living within a 40 km radius of St. Michael's Hospital.

Exclusion Criteria:

  • Lipid lowering medications, clinical or biochemical evidence of diabetes, renal or hepatic disease, body mass index (BMI) >32 kg/m2, antibiotic use within the last three months, hormone replacement therapy, smoking or significant alcohol intake (> 1 drink/d) or triglyceride level >4.0 mmol/L.
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Please refer to this study by its identifier: NCT00507520

Canada, Ontario
St. Michael's Hospital
Toronto, Ontario, Canada, M5S 2T2
Sponsors and Collaborators
University of Toronto
Principal Investigator: David JA Jenkins, MD, PhD University of Toronto, St. Michael's Hospital
Study Director: Cyril WC Kendall, PhD University of Toronto, St. Michael's Hospital
  More Information

Publications: Identifier: NCT00507520     History of Changes
Other Study ID Numbers: REB 235U
U of T Protocol #6440
Study First Received: July 24, 2007
Last Updated: July 25, 2007

Keywords provided by University of Toronto:
Blood Lipids

Additional relevant MeSH terms:
Cardiovascular Diseases
Lipid Metabolism Disorders
Metabolic Diseases processed this record on April 28, 2017