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NCT Number: NCT00634673

Postprandial Fatty Acids and FABP2 in Type 2 Diabetes Mellitus (DM)

This study will be conducted in type 2 diabetic patient's to evaluate the if there is a different response of serum lipids after a standard meal (rich in saturated fatty acids) in patients who have the presence of a genetic alteration. This alteration that will be evaluated is a polymorphism, change of an amino acid in the gene of FABP2. This gene that can influence the absorption of lipids in the intestine and subjects who have the altered genotype (presence of T allele) can have an abnormal lipid profile as compared to subjects without this genotype.

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Key information

Conditions

Dyslipidemia Diabetes Mellitus Diabetes Mellitus, Type 2 Dyslipidemias Endocrine System Diseases Glucose Metabolism Disorders Lipid Metabolism Disorders Metabolic Diseases Nutritional and Metabolic Diseases Type 2 Diabetes Mellitus

Age range

40 week–75 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Hospital de Clínicas de Porto Alegre

Porto Alegre, Rio Grande do Sul, 90035-003, Brazil

About this study

Background: The presence of Ala54Thr polymorphism of intestinal fatty acid-binding protein 2 gene (FABP2) might influence the intestinal absorption of dietary fatty acids (FAs) and has been associated with diabetic nephropathy.

Objective: We studied the postprandial serum FAs in type 2 diabetic patients homozygous for Thr54 (TT; n = 11) or for Ala54 (AA; n = 15) after a standard meal.Design: Patients received a sandwich (7.23 kcal/kg-total energy; 43.35% fat, 21.95% protein, and 34.70% carbohydrate) in the morning after 12-h fasting and FAs in chylomicrons (gas chromatograph), plasma glucose, and serum triacylglycerols were measured at 0, 2, 4, 6 and 8 h. Results: TT and AA patients did not differ regarding age (61.6±6.7 vs. 62.0±7.7years), diabetes duration (12.7±6.9 vs. 13.1±5.6years), male proportion (72.7 vs. 86.7%), blood pressure, type of diabetes treatment and previous macronutrients intake as well as serum A1C test (6.5±0.6 vs. 6.7±0.4%), LDL (3.0±1.0 vs. 3.2±0.6mmo/L), HDL (1.3±0.2 vs. 1.3±0.4mmol/L), triacylglycerols [1.6(1.0-3.4) vs. 1.6(0.6-3.7)mmol/L], saturated, monounsaturated, and polyunsaturated FAs, and trans-unsaturated FAs. The increase in serum glucose and triacylglycerols after the meal (ANOVA,P<0.001) was not different in both groups. The maximum increase of FAs occurred at 6-h postprandial, but only in TT patients: saturated FAs increased from 464.4(56.9-1602.5) to 1249.5(214.5-7149.8)mg/dL (P=0.041), monounsaturated FAs from 387.9(30.2-1523.8) to 925.1(344.6-5554.0)mgd/L (P=0.026), polyunsaturated FAs from 258.9(0-1048.5) to 713.1(143.7-7987.6)mg/dL (P=0.021), trans-unsaturated FAs from 18.5(1.9-70.6) to 66.5(5.0-451.7)mg/dL (P=0.023). Conclusion: The presence of the T allele of Ala54Thr polymorphism of FABP2 gene in type 2 diabetic patients increases absorption of dietary FAs, including the trans-unsaturated FAs, and this might turns these patients more susceptible to the effect of diet composition.

Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

  • Type 2 diabetes
  • homozygote to FABP2 polymorphism:TT or AA

Exclusion criteria

  • age >75 years
  • glomerular filtration rate <30ml min-1
  • with unstable angina or possible infarct or stroke in the last year

Treatment and study plan

sandwich

Other

standard meal:sandwich (7.23 kcal/kg-total energy; 43.35% fat, 21.95% protein, and 34.70% carbohydrate)

Other names: fat meal

Primary outcomes

  1. postprandial serum fatty acids

    Time frame: 0, 2, 4,6, and 8 hours after meal

Secondary outcomes

  1. serum endothelin serum fibrinogen

    Time frame: 0 and 8 hours after meal

Sponsors and collaborators

Lead sponsor

Hospital de Clinicas de Porto Alegre

Other

Registry information

Official study title

FABP2 Ala54Thr Genotype Influences the Postprandial Serum Fatty Acids Profile in Type 2 Diabetic Patients

Important dates

Study start
2006
Primary completion
2007
Study completion
2007
First posted
Mar 13, 2008
Registry last updated
Mar 13, 2008

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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