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1.
J Nutr Sci ; 9: e24, 2020.
Article in English | MEDLINE | ID: mdl-32685140

ABSTRACT

Obese subjects have shown a preference for dietary lipids. A recent collection of evidence has proposed that a variant in the CD36 gene plays a significant role in this pathway. We assessed the association between the orosensory detection of a long-chain fatty acid, i.e. oleic acid (OA), and genetic polymorphism of the lipid taste sensor CD36 in obese and normal-weight subjects. Adult participants were recruited in the fasting condition. They were invited to fat taste perception sessions, using emulsions containing OA and according to the three-alternative forced-choice (3-AFC) method. Genomic DNA was used to determine the polymorphism (SNP rs 1761667) of the CD36 gene. Obese (n 50; BMI 34⋅97 (sd 4⋅02) kg/m2) exhibited a significantly higher oral detection threshold for OA (3⋅056 (sd 3⋅53) mmol/l) than did the normal-weight (n 50; BMI 22⋅16 (sd 1⋅81) kg/m2) participants (1⋅20 (sd 3⋅23) mmol/l; P = 0⋅007). There was a positive correlation between OA detection thresholds and BMI in all subjects; evenly with body fat percentage (BF%). AA genotype was more frequent in the obese group than normal-weight group. OA detection thresholds were much higher for AA and AG genotypes in obese subjects compared with normal-weight participants. Higher oral detection thresholds for fatty acid taste are related to BMI, BF% and not always to CD36 genotype.


Subject(s)
CD36 Antigens/genetics , Fatty Acids/metabolism , Obesity/genetics , Polymorphism, Single Nucleotide , Adolescent , Adult , Body Mass Index , Dietary Fats , Female , Genotype , Humans , Male , Middle Aged , Oleic Acid/metabolism , Weights and Measures , Young Adult
2.
Therapie ; 54(5): 553-7, 1999.
Article in English | MEDLINE | ID: mdl-10667089

ABSTRACT

The study was conducted on 216 dairy cows. Samples of feeds distributed to cows were collected monthly for the purpose of determining their content in dry matter, energy, crude proteins and mineral matter. Milk samples were collected weekly for every cow from newly calved cows until confirmation of pregnancy by rectal palpation at least 2 months after artificial insemination. These samples were used for progesterone assays in skimmed milk, in order to assess the interval between calving and return to ovarian activity [C-ROA], calving and first insemination [C-I1], calving and conception [C-C] and number of inseminations per conception (nI/C). Results have shown a significant negative correlation between the duration of [C-ROA] and [C-C] intervals and the dietary content in crude proteins (r = -0.720, p < 0.05 and r = -0.914, p < 0.01 respectively).


Subject(s)
Animal Feed/analysis , Cattle/physiology , Dietary Proteins/pharmacology , Milk/chemistry , Postpartum Period/metabolism , Pregnancy, Animal/drug effects , Reproduction/drug effects , Animals , Dietary Proteins/administration & dosage , Female , Insemination, Artificial , Ovulation/drug effects , Pregnancy , Progesterone/analysis
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