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

This study has been completed.
Information provided by:
Hospital de Clinicas de Porto Alegre Identifier:
First received: March 6, 2008
Last updated: March 12, 2008
Last verified: February 2008
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.

Condition Intervention
Type 2 Diabetes Mellitus
Other: sandwich

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Official Title: FABP2 Ala54Thr Genotype Influences the Postprandial Serum Fatty Acids Profile in Type 2 Diabetic Patients

Further study details as provided by Hospital de Clinicas de Porto Alegre:

Primary Outcome Measures:
  • postprandial serum fatty acids [ Time Frame: 0, 2, 4,6, and 8 hours after meal ]

Secondary Outcome Measures:
  • serum endothelin serum fibrinogen [ Time Frame: 0 and 8 hours after meal ]

Enrollment: 26
Study Start Date: June 2006
Study Completion Date: October 2007
Primary Completion Date: October 2007 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
patients homozygous for Thr54 (TT)
Other: sandwich
standard meal:sandwich (7.23 kcal/kg-total energy; 43.35% fat, 21.95% protein, and 34.70% carbohydrate)
Other Name: fat meal
patients homozygous for Ala54 (AA)
Other: sandwich
standard meal:sandwich (7.23 kcal/kg-total energy; 43.35% fat, 21.95% protein, and 34.70% carbohydrate)
Other Name: fat meal

Detailed Description:

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.


Ages Eligible for Study:   40 Weeks to 75 Years   (Child, Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

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
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Please refer to this study by its identifier: NCT00634673

Hospital de Clínicas de Porto Alegre
Porto Alegre, Rio Grande do Sul, Brazil, 90035-003
Sponsors and Collaborators
Hospital de Clinicas de Porto Alegre
Principal Investigator: Mirela J Azevedo, MD Hospital de Clínicas de Porto Alegre
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: MIrela Jobim de Azevedo, Hospital de Clínicas de Porto Alegre Identifier: NCT00634673     History of Changes
Other Study ID Numbers: HCPA05060
Study First Received: March 6, 2008
Last Updated: March 12, 2008

Keywords provided by Hospital de Clinicas de Porto Alegre:
Serum Fatty Acids
FABP2 Gene
Polymorphism Ala54Thr

Additional relevant MeSH terms:
Diabetes Mellitus
Diabetes Mellitus, Type 2
Glucose Metabolism Disorders
Metabolic Diseases
Endocrine System Diseases
Lipid Metabolism Disorders processed this record on May 25, 2017