title: Fatty acid composition of erythrocyte phospholipids is related to insulin levels, secretion and resistance in obese type 2 diabetics on Metformin.
abstract: BACKGROUND
  Relationships between fatty acids in erythrocyte phospholipids and insulin parameters have been described in healthy and overweight individuals, but not in obese diabetics. We assessed whether erythrocyte phospholipid fatty acids are related to insulin parameters in obese type 2 diabetics on Metformin.
  
  
  METHODS
  In 23 diabetics, the fractions of the different fatty acids in erythrocyte phospholipids were correlated with insulin levels, secretion, sensitivity, resistance and insulinemic response following a standardised breakfast.
  
  
  RESULTS
  Fasting insulin levels and insulin resistance correlated positively with the fraction of alpha-linolenic and dihomo-gamma-linolenic acid and with the ratios of stearic to palmitic and dihomo-gamma-linolenic to linoleic acid and negatively with the fraction of palmitic acid in erythrocyte phospholipids. Insulin secretion correlated negatively with the fraction of palmitic acid. For this parameter, a positive correlation was also found with the sum of uneven fatty acids. Insulinemic response following a meal was negatively associated with the fraction of oleic acid in erythrocyte phospholipids. Insulin sensitivity did not correlate with erythrocyte fatty acids.
  
  
  CONCLUSIONS
  The relationships found differ from those described in healthy and overweight individuals and may be characteristic for type 2 diabetics. They concur with the recommendations that saturated fat intake should be reduced and monounsaturated increased.
authors.affiliation: Department of Physiology and Biochemistry, Institute of Nutrition and Food Hygiene, Havana, Cuba.
authors.forename: Yanik Rodríguez
authors.initials: YR
authors.lastname: Enriquez
authors.forename: Mimi
authors.initials: M
authors.lastname: Giri
authors.forename: Raoul
authors.initials: R
authors.lastname: Rottiers
authors.forename: Armand
authors.initials: A
authors.lastname: Christophe
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D015415:Biomarkers / Q000097:blood; D003924:Diabetes Mellitus, Type 2 / Q000097:blood*; D004041:Dietary Fats / Q000494:pharmacology; D004912:Erythrocytes / Q000737:chemistry*; D005227:Fatty Acids / Q000097:blood*; D006801:Humans; D007328:Insulin / Q000097:blood* / Q000378:metabolism; D007333:Insulin Resistance / Q000502:physiology; D008297:Male; D008687:Metformin / Q000627:therapeutic use; D008875:Middle Aged; D009765:Obesity / Q000097:blood*; D010743:Phospholipids / Q000737:chemistry*
chemical_list: D015415:Biomarkers; D004041:Dietary Fats; D005227:Fatty Acids; D007328:Insulin; D010743:Phospholipids; D008687:Metformin