- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT02395835
Methylation of the PPARg Promoter Region in Pregnancy
Methylation Evaluation of the PPARg Promoter Region (-351 to -260) in Pregnancy
Aperçu de l'étude
Statut
Les conditions
Description détaillée
Women were recruited in the first trimester of pregnancy not including cases with congenital heart and disabling or autoimmune diseases. Those whose clinical follow-up were lost or, if in the postpartum period, who had to be attended in the obstetric intensive care unit were eliminated from the study.
A clinical visit per month was established. Body weight and height were measured in an overnight fasting status using an adult scale (Seca, Hamburg, Germany). Prepregnancy Body Mass Index (BMI) was calculated as weight in kg divided by height in meters squared based on the prenatal chart or on the self-reported weight of women with no prenatal chart.
Blood pressure was recorded at each visit using a standard sphygmomanometer (Riester Big Ben® Square, Germany). Preeclampsia was diagnosed and classified according to the American College of Obstetricians and Gynecologists (ACOG).
Fasting blood samples (10 ml) were taken at the HMPMP laboratory in an early morning after an overnight fasting. Serum samples were analyzed for glucose and lipid profile (Dimension Rx L Max, Dade Behring, USA). At the end of pregnancy, 1 to 2 ml of neonatal peripheral blood sample for leukocyte DNA extraction was taken.
Dietetic treatment was calculated according to height, weeks of gestation, and weight, considering an energy intake of 30 kcal/kg of ideal weight and a macronutrient distribution of: 55-65% carbohydrates, 10-20% fat, and the remainder as proteins. On each nutritional visit, the Healthy Eating Index for Pregnancy (HEI) was evaluated, and all women were recommended to include methionine-rich foods (beans, eggs, fish, garlic, lentils, onion, and soy) and those containing folic acid and vitamin B12 (beef liver, cereals, whole grains, yeast, etc.) in adequate quantities in their diet. The information was complemented with the Food Frequency Questionnaire (FFQ), and the diet adherence was considered adequate with 80% compliance to the indicated calories, at least in four visits.
This project had no risk to pregnant women and their infants, according to the regulations of the General Health Research Law of Mexico. We followed the Declaration of Helsinki, and all patients were asked to sign the written informed consent.
Type d'étude
Inscription (Réel)
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
Méthode d'échantillonnage
Population étudiée
La description
Inclusion Criteria: Women attended in the first trimester of pregnancy -
Exclusion Criteria: congenital heart and disabling or autoimmune diseases
-
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
Cohortes et interventions
Groupe / Cohorte |
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Normal weight (NW) pregnant women
Pregnant women with Body Mass Index (BMI) > = 30. Body weight and height were measured in an overnight fasting status using an adult scale (Seca, Hamburg, Germany). Prepregnancy BMI was calculated as weight in kg divided by height in meters squared based on the prenatal chart or on the self-reported weight of women with no prenatal chart. Dietetic treatment was calculated according to height, weeks of gestation, and weight, considering an energy intake of 30 kcal/kg of ideal weight and a macronutrient distribution of: 55-65% carbohydrates, 10-20% fat, and the remainder as proteins. |
Overweight (OW) pregnant women
Pregnant women with Body Mass Index (BMI) < 30. Body weight and height were measured in an overnight fasting status using an adult scale (Seca, Hamburg, Germany). Prepregnancy BMI was calculated as weight in kg divided by height in meters squared based on the prenatal chart or on the self-reported weight of women with no prenatal chart. Dietetic treatment was calculated according to height, weeks of gestation, and weight, considering an energy intake of 30 kcal/kg of ideal weight and a macronutrient distribution of: 55-65% carbohydrates, 10-20% fat, and the remainder as proteins. |
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
---|---|---|
Evidence of the effect of Body Mass Index (BMI) on the methylation status of the PPAR gamma promoter region (-351 to -260).
Délai: Pregnant women were followed until delivery.
|
The treatment of DNA (2 µg) was performed with sodium bisulfite (EZ DNA Methylation-Direct Kit, ZymoResearch). For the control group, we used purified human methylated and unmethylated DNA (Zymo Research) with specific oligonucleotides. Lymphocyte DNA from healthy donors was used as negative control, and methylated DNA "in vitro" with Sss I enzyme (New England Biolabs) was used as positive control for methylation. The methylated (M3) and unmethylated (U3) primers used were those proposed by Pancione et al. |
Pregnant women were followed until delivery.
|
Collaborateurs et enquêteurs
Les enquêteurs
- Chercheur principal: Hugo Mendieta Zerón, PhD., Asociación Científica Latina A.C.
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude
Achèvement primaire (Réel)
Achèvement de l'étude (Réel)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Estimation)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Estimation)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- 05-06-2009
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