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Completed

NCT Number: NCT03674736

Metabolic Availability of Methionine and Lysine From Rice, Wheat, Chickpea and Lentil in Adult Men

The research study is being done so we can determine the quality of the protein present in Rice, Wheat, Chickpeas and Lentils. Amino acids are the building blocks of protein and protein quality is determined by the amount of amino acids present and by their bioavailability (their absorption and use by the body). Some amino acids are essential which means they must be obtained from the diet. If any one of the essential amino acids is missing in the diet, the body cannot make proteins that are used to repair tissue build bone, teeth, etc… Rice, Wheat, Chickpeas and Lentils as a food source contain low amounts of the essential amino acid methionine (Chickpeas and Lentils) and lysine (Rice and Wheat) which makes its protein incomplete. The amino acids in Rice, Wheat, Chickpeas and Lentils are also affected by cooking. Our objective is to determine the amount of methionine in Rice and Wheat and the amount of lysine in Chickpeas and Lentils that the body can use.

This research is being done in order to bridge the gap between knowledge of protein requirement and the amount of food needed to meet that requirement. Results from this study will be important for recommendations guiding food choices of Rice, Wheat, Chickpeas and Lentils as a major protein source in the diet.

Previously the quality of dietary protein for human consumption was studied in animals. This study is being done in humans because studies in animals are not always directly applicable to humans. Plant protein sources like rice, wheat, chickpeas and lentils are important protein sources shown to "enhance ecosystem resilience, and improve human health.

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Key information

Conditions

Healthy Congenital, Hereditary, and Neonatal Diseases and Abnormalities Endocrine Gland Neoplasms Endocrine System Diseases Genetic Diseases, Inborn Multiple Endocrine Neoplasia Multiple Endocrine Neoplasia Type 1 Neoplasms Neoplasms by Site Neoplasms, Multiple Primary Neoplastic Syndromes, Hereditary

Age range

18 year–49 year

Sex eligibility

Male

Study type

Interventional

Phase

Not applicable

Primary location

The Hospital for Sick Children

Toronto, Ontario, M5G1X8, Canada

About this study

If you agree to take part in this study, you will participate in 7 different experiments for each food. For each food you will receive 3 different amounts of Rice, Wheat, Chickpeas or Lentils which will contain different amounts of the essential amino acid methionine (Rice or Wheat) or lysine (Chickpeas or Lentils).

The quality of the protein in the Rice, Wheat, Chickpeas or Lentils will be compared to the quality of a reference protein (egg protein) by giving you 4 reference diets containing amino acids made up like the amino acids in egg protein. The amount of Rice, Wheat, Chickpeas or Lentils you receive will be provided in a random order.

Each experiments will be conduced over 3 days- 2 adaptation days where you will receive the diets at home, provided by the investigators and 1 study day. On the 3rd day (study day) you will visit the Clinical Research Center (CRC) at the Hospital for Sick Children where you will receive 9 hourly meals. Breath samples will be collected after the 4th meal in 15 min intervals for 1 hour. Breath collection will resume again two and a half hours after the 5th meal every 15 minutes until 30 minutes after the last meal. A total of 52 breath samples will be collected during each of the 3rd study day.

Before the study begins, you will visit the CRC at the Hospital for Sick Children for a baseline study assessment. At that time your body composition (fat and fat-free mass) will be measured and your resting energy expenditure will be measured. This will tell us the amount of calories your body need so we can prepare the diets for you for each experiment. This baseline assessment takes about 2 hours.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Male, age 18 - 49 yrs, Healthy with no known clinical condition which would affect protein or AA metabolism, ex. Diabetes, Stable Body Weight (no more than 5 lb weight loss or gain in the past 3 months) Not on any medications that could affect protein or amino acid metabolism e.g. steroids

Exclusion criteria

  • Unwillingness to participate or unable to tolerate the diet Recent history of weight loss within the last 3 months or on a weight reducing diet Inability to tolerate study diets (ex. Allergy to ingredients).

Treatment and study plan

Dietary Intakes

Dietary Supplement

Four levels of methionine or lysine intakes will be provided by the reference protein drinks, 3 levels of methionine from rice and wheat bread and 3 levels of lysine from chickpeas and lentils

Primary outcomes

  1. Metabolic availability of Methionine in Rice Apply the IAAO method to determine the MA of methionine in Canadian grown lentils prepared by moist cooking method.

    Time frame: 2 years

    Apply the IAAO method to determine the MA of methionine in rice method.

  2. Metabolic availability of Methionine in Wheat

    Time frame: 2 years

    Apply the IAAO method to determine the MA of methionine in wheat bread

  3. Metabolic availability of Lysine in Chickpeas

    Time frame: 2 years

    Apply the IAAO method to determine the MA of lysine in chickpeas

  4. Metabolic availability of Lysine in Lentils

    Time frame: 2 years

    Apply the IAAO method to determine the MA of lysine in Canadian grown lentils

Sponsors and collaborators

Lead sponsor

The Hospital for Sick Children

Other

Registry information

Official study title

Application of the Indicator Amino Acid Oxidation Technique for the Determination of Metabolic Availability of Methionine and Lysine From Rice, Wheat, Chickpeas and Lentils, in Healthy Young Adult Men

Important dates

Study start
2018
Primary completion
2022
Study completion
2022
First posted
Sep 17, 2018
Registry last updated
Jun 2, 2023

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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