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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT04915638
Other study ID # HJM2315/14-C
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date February 15, 2018
Est. completion date April 12, 2019

Study information

Verified date May 2021
Source Universidad Nacional Autonoma de Mexico
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Malnutrition is an epidemiologic problem with high prevalence in Mexico. Mexican children present a double burden of malnutrition characterized by the coexistence of undernutrition and micronutrient deficiency alongside excess body weight. Malnutrition is caused by inadequate nutrition, including micronutrients deficiencies, in which children living in rural areas and indigenous populations are disproportionately affected. Malnutrition has been associated with an increased risk of metabolic abnormalities like metabolic syndrome (MS), diabetes, and cardiovascular disease in adulthood. Nutrition-specific interventions are strategies that may reduce or avert malnutrition in children. However, limited intervention studies have been implemented in low-income populations, particularly in rural areas. Therefore, studies that include nutrition-specific intervention with enriched foods aimed at reducing micronutrients deficiencies and that can help in prevention or treatment of metabolic conditions in these populations are still needed. Based on the nutritional characterization carried out in school children in Chimalhuacán, Mexico State, a formula in a powder form was designed for children containing vitamins, minerals, antioxidants, and omega-3 fatty acids that can be used to enrich foods. The present study aimed to evaluate the effect of a 4-week intervention with cookies enriched with a micronutrient formula on the nutritional status in Maya schoolchildren aged 8-10 years. Participants (n=84) were their own control, and the investigators measured, at pre- and post-intervention, anthropometric, clinical, biochemical, and cognitive parameters; diet and molecular parameters were assessed only at pre-intervention. Chi-square test, t-Student paired or Wilcoxon, ANCOVA, and logistic regression were performed to analyze the data.


Description:

Mexican children face both forms of malnutrition: under- and overnutrition. Malnutrition is common among children living in rural areas and indigenous populations, where children suffer from food insecurity and cannot access quality nutrition with adequate micronutrients levels. Studies with vulnerable population groups, such as children, in Mexico have shown that micronutrient deficiencies of vitamins A, E, D, C, and minerals like iron, zinc, calcium, and selenium exist. Micronutrient deficiencies can affect physiology functions, growth of children, cognitive function, and impair metabolic processes at biochemical and cellular level. Furthermore, the early exposure of children to malnutrition, in conjunction with the existence of genetic susceptibility, may predispose children to develop metabolic abnormalities like metabolic syndrome (MetS). Thus, increasing the risk of children developing diabetes and cardiovascular diseases in adulthood. The investigators decided to implement an intervention study in rural communities in the state of Yucatan because this region presents a higher proportion of Maya population than other states of Mexico, but also Yucatan has the highest prevalence of both obesity and undernutrition in children in the country. Previous studies from the investigators group in a Maya child population revealed a frequency of 50% MetS, 34.9% Insulin Resistance (IR), in addition to deficiencies of essential micronutrients. Despite the fact micronutrients are essential for adequate functioning of metabolic processes, few studies in Mexico propose an intervention with enriched food with multiple nutrients such as micronutrients and omega-3 fatty acids. Also, there is little evidence from micronutrient intervention studies in schoolchildren with malnutrition in Mexico, as a strategy to impact on nutritional status and preventive metabolic conditions. For instance, a study by García-López S et al in Mexican schoolchildren with overweight and MetS showed a decrease in lipid and glycemic profiles when supplemented with omega 3-fatty acids for 1 month. Therefore, the present study aimed to evaluate the effect of 4-week intervention with enriched cookies containing a micronutrient formula designed specifically to target the nutritional deficiencies identified in the children. The investigators assessed anthropometric, clinical, biochemical, and cognitive parameters; diet and molecular parameters were assessed only at pre-intervention. 1. Study location: This study was conducted in three elementary schools of Maya rural communities of Yucatan. The communities are Xocén, Tahmek, and San José Oriente. 2. Study design: This study was a paired clinical trial. Participants were their own control for the enriched food intervention. 3. Sample size: The investigators used an equation for finite population. The sample size was estimated to have 80% of statistical power and 95% of a confidence level. A 15% was considered for calculations for dropout during the intervention. Based on the prevalence of malnutrition in Mexico and one community (Xocén), the total number of participants was 106. 4. Sampling procedure: The investigators considered the inclusion and exclusion criterions. Participants were assigned with the convenience sampling technique. 5. Intervention: The intervention consisted of a either a handmade oatmeal cookie or industrialized cookies both enriched with a formula FV-UNAM. The handmade oatmeal cookies enriched with the supplement formula were administered to schoolchildren from Xocén. The industrialized cookies, called Globitos, were donated by DONDÉ cookie factory company, and were supplemented with the same formula as the oatmeal cookies. The enriched Globitos were distributed to the schoolchildren from Tahmek and San José Oriente. The FV formula for children was designed by the Facultad de Química-UNAM. The FV formula is in powder form that contains vitamins, minerals, antioxidants, and omega-3 fatty acids, which are nutrients that have been observed to be deficient in the studied schoolchildren populations. The formulation was within the requirements of the Reference Daily Intake (RDI) for the Mexican population, according to their age, from the Official Mexican Standard (NOM)-051-SCFI/SSA1-2010. 6. Measurements: A nutritional-clinical face-to-face interview was performed with parents or tutors and children. When necessary, assistance from a local translator was used. Nutritional data was collected before pre-intervention. Anthropometric, clinical, biochemical, and cognitive parameters were collected pre- and post-intervention; diet and molecular parameters were assessed only at pre-intervention. 1. Anthropometric parameters were measured according to the International Society for the Advancement of Kinanthropometry (ISAK). Parameters included were: body weight (SECA 869), height (SECA 217); wrist, arm, and waist circumference (LUFKIN); tricipital skinfold (LANGE); wrist, humerus, and femur diameters (VITRUVIAN). Then, the BMI-for-age and height-for-age indicators were estimated and were translated to z-score according to the World Health Organization (WHO) classification for growth standards. Bone's diameters were translated to z-score and tricipital skinfold to percentile. 2. Body composition (body fat and fat-free-mass) was determined by bioimpedance analysis (TANITA BC-1500). 3. Blood pressure was taken twice with a rest period of 10 minutes. The investigators used the average of the two measurements and converted the value to percentile. 4. Biochemical parameters were collected of peripheral blood samples (8ml) after 12 hours of fasting in the presence of parents or tutors. The 4ml was used for complete blood count and blood chemistry determinations, and also the molecular parameters. The rest of the sample (4ml) will be used for the determination of micronutrients in serum (vitamin A, vitamin E and vitamin D). Blood samples were centrifuged 15 minutes after sample collection and separated into aliquots. Aliquots were kept under optimal conditions (2-8◦C) until processing. All biochemical parameters were determined by the central laboratory of Hospital Juárez de México according to the specific instructions of the manufacturers of the commercial kits. The micronutrients will be quantified by high-efficiency liquid chromatography (HPLC). 5. Cognitive test was assessed using a Draw-A-Person Intellectual Ability Test for Children, Adolescents and Adults (DAP:IQ), which allows an estimation of intellectual ability. The cognitive test was analyzed by two evaluators. 6. Dietary intake was assessed using a standard 24-hour diet recall questionnaire at pre-intervention. This assessment consists of face-to-face interviews with parents or tutors, and children. The investigators used household measurements to estimate portion sizes of consumed foods and beverages. Dietary intake data was analyzed by a dietary analysis program (Nutrimind software). This software uses the Mexican Equivalent Food System and U.S. Department of agriculture (USDA) Food database. 7. Frequency of food intake was estimated using the standard Semi-Quantitative Food Frequency Questionnaire (SFFQ), which was specific for the school age Mexican population. This assessment was a face-to-face interview with children in presence with the teacher. The SFFQ was analyzed using a valid method of Ramírez-Silva I et al., 2016. 8. Molecular parameters included genotypification of genetic polymorphisms that are associated with metabolic alteration in Mexican adults and Mexico´s indigenous communities. First, the DNA genomic extraction from whole blood was performed using Miller technique. Polymorphisms of genes ATP (Adenosine triphosphate) binding cassette subfamily A member 1 (ABCA1), Peroxisome proliferator activated receptor gamma (PPARG), Glucokinase regulator (GCKR), Cycline-dependent kinase inhibitor-2A/B (CDKN2A/2B), Fat mass and obesity-associated (FTO), and Hepatocyte nuclear factor 4 alpha (HNF4A) were genotyped using TaqMan® probes in Real-time Polymerase Chain Reaction (qPCR) (QS5 from Applied Biosystem). The Hardy-Weinberg (H-W) equilibrium was verified. The allelic frequencies were obtained and were compared to 1000 Genomes Project reported frequencies. 7. Adverse effects of the enriched cookies. Any adverse effects were assessed during a weekly visit. The information was obtained by teachers, parents or tutors. 8. Ethics approval. The study protocol was approved by the Ethics Committee of Hospital Juárez de México (HJM2315/14-C). 9. Data Analysis. Data was analyzed using the Statistical Program for Social Sciences (SPSS), version 20. Descriptive data was shown with tables pre- and post-intervention. Categorical variables were used as percentages. Continuous variables were tested for normality and were presented as mean and standard deviation. To determine significance of observed differences between pre- and post-intervention measurements the investigators used paired t-Student (parametric variables) and Wilcoxon (non-parametric) tests. An ANCOVA was performed to identify correlations between nutritional status and parameters, and was adjusted by age, gender, and BMI-z-score as fixed variables. Logistic regression was used to determine the effects of polymorphism under the risk of metabolic abnormality. A 95% confidence level was used, and a P value <0.05 was considered statistically significant.


Recruitment information / eligibility

Status Completed
Enrollment 84
Est. completion date April 12, 2019
Est. primary completion date April 12, 2019
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 8 Years to 10 Years
Eligibility Inclusion Criteria: - Children with Maya ethnicity confirmed by having parents and grandparents belonging to the same community, and three generations living in the community. - Children enrolled in 3th and 4th year of elementary school from the same educational center, volunteers, who have the informed consent signed by their parents or tutors, and the assent letter signed by children. - Aged between 8 to 10 years. - Both genders. Exclusion Criteria: - Any child who does not want to participate in the study. - Children whose parents or tutors do not agree to sign the informed consent. - Children who do not sign the assent letter. - Age less than 8 years and older than 11 years. - Children using antihypertensive, hypoglycemic or lipid-lowering medications, as well as those that have a history of a condition affected by glucose metabolism, insulin or that alter body composition (cancer, chronic infections, food allergy). - Under treatment of intake of supplements with vitamins, minerals, antioxidants (<2 months). - Children with alcoholism or smoking.

Study Design


Intervention

Dietary Supplement:
Experimental intervention group with enriched cookies
Enriched cookies containing a micronutrients formula (vitamins, minerals, antioxidants, and omega-3 fatty acids) each day (Monday to Friday).

Locations

Country Name City State
Mexico Facultad de Química, Unidad Académica de la UNAM en Yucatán Mérida Yucatán

Sponsors (1)

Lead Sponsor Collaborator
Marta Alicia Menjivar Iraheta

Country where clinical trial is conducted

Mexico, 

References & Publications (23)

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García-López S, Villanueva Arriaga RE, Nájera Medina O, Rodríguez López CP, Figueroa-Valverde L, Cervera EG, Muñozcano Skidmore O, Rosas-Nexticapa M. One month of omega-3 fatty acid supplementation improves lipid profiles, glucose levels and blood pressure in overweight schoolchildren with metabolic syndrome. J Pediatr Endocrinol Metab. 2016 Oct 1;29(10):1143-1150. doi: 10.1515/jpem-2015-0324. — View Citation

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Kroker-Lobos MF, Pedroza-Tobías A, Pedraza LS, Rivera JA. The double burden of undernutrition and excess body weight in Mexico. Am J Clin Nutr. 2014 Dec;100(6):1652S-8S. doi: 10.3945/ajcn.114.083832. Epub 2014 Oct 29. — View Citation

Lara-Riegos JC, Ortiz-López MG, Peña-Espinoza BI, Montúfar-Robles I, Peña-Rico MA, Sánchez-Pozos K, Granados-Silvestre MA, Menjivar M. Diabetes susceptibility in Mayas: Evidence for the involvement of polymorphisms in HHEX, HNF4a, KCNJ11, PPAR?, CDKN2A/2B, SLC30A8, CDC123/CAMK1D, TCF7L2, ABCA1 and SLC16A11 genes. Gene. 2015 Jul 1;565(1):68-75. doi: 10.1016/j.gene.2015.03.065. Epub 2015 Mar 31. — View Citation

Martini L, Pecoraro L, Salvottini C, Piacentini G, Atkinson R, Pietrobelli A. Appropriate and inappropriate vitamin supplementation in children. J Nutr Sci. 2020 Jun 5;9:e20. doi: 10.1017/jns.2020.12. Review. — View Citation

Mendez N, Barrera-Pérez TL, Palma-Solis M, Zavala-Castro J, Dickinson F, Azcorra H, Prelip M. ETHNICITY AND INCOME IMPACT ON BMI AND STATURE OF SCHOOL CHILDREN LIVING IN URBAN SOUTHERN MEXICO. J Biosoc Sci. 2016 Mar;48(2):143-57. doi: 10.1017/S0021932015000127. Epub 2015 Jun 4. — View Citation

Miller SA, Dykes DD, Polesky HF. A simple salting out procedure for extracting DNA from human nucleated cells. Nucleic Acids Res. 1988 Feb 11;16(3):1215. — View Citation

Moreno-Estrada A, Gignoux CR, Fernández-López JC, Zakharia F, Sikora M, Contreras AV, Acuña-Alonzo V, Sandoval K, Eng C, Romero-Hidalgo S, Ortiz-Tello P, Robles V, Kenny EE, Nuño-Arana I, Barquera-Lozano R, Macín-Pérez G, Granados-Arriola J, Huntsman S, Galanter JM, Via M, Ford JG, Chapela R, Rodriguez-Cintron W, Rodríguez-Santana JR, Romieu I, Sienra-Monge JJ, del Rio Navarro B, London SJ, Ruiz-Linares A, Garcia-Herrera R, Estrada K, Hidalgo-Miranda A, Jimenez-Sanchez G, Carnevale A, Soberón X, Canizales-Quinteros S, Rangel-Villalobos H, Silva-Zolezzi I, Burchard EG, Bustamante CD. Human genetics. The genetics of Mexico recapitulates Native American substructure and affects biomedical traits. Science. 2014 Jun 13;344(6189):1280-5. doi: 10.1126/science.1251688. Epub 2014 Jun 12. — View Citation

Popkin BM, Corvalan C, Grummer-Strawn LM. Dynamics of the double burden of malnutrition and the changing nutrition reality. Lancet. 2020 Jan 4;395(10217):65-74. doi: 10.1016/S0140-6736(19)32497-3. Epub 2019 Dec 15. Review. — View Citation

Ramírez-Silva I, Jiménez-Aguilar A, Valenzuela-Bravo D, Martinez-Tapia B, Rodríguez-Ramírez S, Gaona-Pineda EB, Angulo-Estrada S, Shamah-Levy T. Methodology for estimating dietary data from the semi-quantitative food frequency questionnaire of the Mexican National Health and Nutrition Survey 2012. Salud Publica Mex. 2016 Nov-Dec;58(6):629-638. doi: 10.21149/spm.v58i6.7974. — View Citation

Ramírez-Silva I, Rodríguez-Ramírez S, Barragán-Vázquez S, Castellanos-Gutiérrez A, Reyes-García A, Martínez-Piña A, Pedroza-Tobías A. Prevalence of inadequate intake of vitamins and minerals in the Mexican population correcting by nutrient retention factors, Ensanut 2016. Salud Publica Mex. 2020 Sep-Oct;62(5):521-531. doi: 10.21149/11096. — View Citation

Shamah-Levy T, Vielma-Orozco E, Heredia-Hernández O, Romero-Martínez M, Mojica-Cuevas J, Cuevas-Nasu L, Santaella-Castell JA R-DJE. Encuesta Nacional de Salud y Nutrición 2018-19: Resultados Nacionales. Cuernavaca,. Instituto Nacional de Salud Pública. 2020. 1689-1699 p.

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Tam E, Keats EC, Rind F, Das JK, Bhutta AZA. Micronutrient Supplementation and Fortification Interventions on Health and Development Outcomes among Children Under-Five in Low- and Middle-Income Countries: A Systematic Review and Meta-Analysis. Nutrients. 2020 Jan 21;12(2). pii: E289. doi: 10.3390/nu12020289. — View Citation

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* Note: There are 23 references in allClick here to view all references

Outcome

Type Measure Description Time frame Safety issue
Primary Change of weight from pre-intervention and after 4 weeks of intervention Kilograms Pre-intervention and post-intervention at week 4
Primary Change of height from pre-intervention and after 4 weeks of intervention Meters Pre-intervention and post-intervention at week 4
Primary Change of weight-for-age z-score from pre-intervention and after 4 weeks of intervention Measurement value of weight will be used to calculate weight-for-age in z-score according to age and sex Pre-intervention and post-intervention at week 4
Primary Change of height-for-age z-score from pre-intervention and after 4 weeks of intervention Measurement value of height will be used to calculate height-for-age in z-score according to age and sex Pre-intervention and post-intervention at week 4
Primary Change of Body Mass Index z-score from pre-intervention and after 4 weeks of intervention Weight and height will be combined to calculate Body Mass Index in kg/m^2. The value of BMI will be reported in BMI-for-age in z-score according to age and sex Pre-intervention and post-intervention at week 4
Primary Change of tricipital skinfold percentile from pre-intervention and after 4 weeks of intervention Tricipital skinfold will be reported in percentile according to age and sex Pre-intervention and post-intervention at week 4
Primary Change of bone diameters z-score from pre-intervention and after 4 weeks of intervention Bone diameters will be reported in z-score according to age and sex Pre-intervention and post-intervention at week 4
Primary Change of waist circumference percentile from pre-intervention and after 4 weeks of intervention Waist circumference will be reported in percentile according to age and sex Pre-intervention and post-intervention at week 4
Primary Change of waist-to-height ratio from pre-intervention and after 4 weeks of intervention Waist circumference height will be used to calculate waist-to-height ratio (WHtR) Pre-intervention and post-intervention at week 4
Primary Change of body fat-mass pre-intervention and after 4 weeks of intervention Percentage Pre-intervention and post-intervention at week 4
Primary Change of fat-free-mass pre-intervention and after 4 weeks of intervention Weight and body fat (converted to kg) will be used to calculate fat-free-mass in kilograms Pre-intervention and post-intervention at week 4
Primary Change in Systolic Blood Pressure pre-intervention and after 4 weeks of intervention Systolic Blood Pressure percentile according to age, sex, and height Pre-intervention and post-intervention at week 4
Primary Change of red blood count pre-intervention and after 4 weeks of intervention cell/microliter Pre-intervention and post-intervention at week 4
Primary Change of hemoglobin pre-intervention and after 4 weeks of intervention grams/deciliter Pre-intervention and post-intervention at week 4
Primary Change of hematocrit pre-intervention and after 4 weeks of intervention Percentage Pre-intervention and post-intervention at week 4
Primary Change of platelets pre-intervention and after 4 weeks of intervention Microliter Pre-intervention and post-intervention at week 4
Primary Change of white blood cells count in all cell types pre-intervention and after 4 weeks of intervention Reported value of neutrophils, eosinophils, lymphocytes, monocytes, and basophils in percentage Pre-intervention and post-intervention at week 4
Primary Change of glucose and lipid profile pre-intervention and after 4 weeks of intervention Glucose in milligrams/deciliter (mg/dL)
Total cholesterol in mg/dL
Triglycerides in mg/dL
Low-density lipoproteins in mg/dL
High-density lipoproteins in mg/dL
Pre-intervention and post-intervention at week 4
Primary Change of liver profile pre-intervention and after 4 weeks of intervention Alanine aminotransferase in Unit/liter (U/L)
Aspartate aminotransferase in U/L
Pre-intervention and post-intervention at week 4
Primary Change of blood proteins pre-intervention and after 4 weeks of intervention Albumin in grams/deciliter (g/dL)
Globulin in g/dL
Total amount of albumin and globulin will be used to measure the total protein in g/dL
Pre-intervention and post-intervention at week 4
Primary Change in cognitive test pre-intervention and after 4 weeks of intervention Standardized points of intellectual cognition based by a median of 100 Pre-intervention and post-intervention at week 4
Secondary Energy intake Energy intake will be estimated in kilocalories/day Pre-intervention, assessed up to 1 day
Secondary Macronutrients intake in grams Carbohydrate, protein and fat intake will be estimated in grams Pre-intervention, assessed up to 1 day
Secondary Macronutrients intake in percentage Carbohydrate, protein, and fat intake will be estimated in percentage Pre-intervention, assessed up to 1 day
Secondary Micronutrients intake in micrograms Vitamin A intake will be estimate in micrograms
Selenium intake will be estimated in micrograms
Pre-intervention, assessed up to 1 day
Secondary Micronutrients intake in milligrams Vitamin E and vitamin C intake will be estimated in milligrams
Iron, calcium, and zinc will be estimated in milligrams
Pre-intervention, assessed up to 1 day
Secondary Frequency of food intake Frequencies of food consumption (Percentages) Pre-intervention, assessed up to 1 week
Secondary Molecular parameters Allelic frequencies of each polymorphism of genes (Percentages) Pre-intervention, assessed up to 1 day
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