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Inflammation and Glycation in a General Adult Population (AES)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01796184
Recruitment Status : Completed
First Posted : February 21, 2013
Last Update Posted : May 22, 2015
Information provided by (Responsible Party):
Francisco Gude, Hospital Clinico Universitario de Santiago

Brief Summary:

Background. Obesity, insulin resistance and type 2 diabetes are closely associated with chronic inflammation characterized by abnormal cytokine production. Some authors have found discordances between glycated hemoglobin (HbA1c) and other measures of glycemic control, suggesting that a "glycation gap", defined as the difference between the HbA1c concentration and that predicted by the fructosamine concentration, could explain the excess interindividual variation in HbA1c.

The present study was aimed to examine the association between inflammation, sociodemographic (age, gender) and lifestyle factors (diet, exercise, alcohol, and tobacco consumption), and common diseases. In addition, we also examine levels of blood glucose, HbA1c, fructosamine and "glycation gap" determining the prevalence of "high glycators" in a general adult population and their association with lifestyles and prevalent diseases.

Methods. Selection of a random sample of the general adult population from a single municipality (A-Estrada, Pontevedra, Spain), stratified by age. The initial sampling includes 3,500 subjects. Considering approximate 67% participation rate, the final study population would include more than 2,000 individuals. The standard workup includes structured questionnaires, skin prick test, periodontal examination, psychological tests, physical examination and blood determinations to allow for categorization of participants in terms of basic demographics, profession, education level, socioeconomic level, quality of life, physical activity, diet, alcohol consumption and smoking, atopy, obesity, diabetes, metabolic syndrome, hypertension, cardiovascular disease, and liver disease. We determine blood levels of inflammation markers, HBA1c, fructosamine and glucose. We will collect a urine sample for microalbuminuria determination. In addition, blood will be drawn to be stored at the Biobank of our Hospital. One half of participants (~1000 individuals) will undergo continuous glucose monitoring. The design is cross-sectional, followed by a longitudinal study using population registries for the determination of events (mortality).

Discussion. This comprehensive study in a general adult population provides an excellent opportunity to determine serum concentrations of inflammation and glycation markers and how they can vary widely with age, sex, common habits, metabolic abnormalities, and chronic diseases. The findings from this study should also help to find out the relationship between glucose profiles and HbA1c and fructosamine concentrations with diet and inflammation markers.

Keywords: Inflammation, glycation, glycated hemoglobin, glycation gap, continuous glucose monitoring, obesity, allergy, periodontal diseases, depression, metabolic diseases.

Condition or disease

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Study Type : Observational
Actual Enrollment : 1516 participants
Time Perspective: Cross-Sectional
Official Title: Inflammation and Glycation in a General Adult Population
Study Start Date : November 2012
Actual Primary Completion Date : March 2015
Actual Study Completion Date : March 2015

Primary Outcome Measures :
  1. Glycation gap levels [ Time Frame: At time of interview and after one week ]
    The glycation gap is calculated as the difference between measured HbA1c and predicted HbA1c from the fructosamine and glucose levels.

Secondary Outcome Measures :
  1. Interstitial glucose levels [ Time Frame: 6 days ]

Biospecimen Retention:   Samples With DNA
whole blood, serum

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population

This cross-sectional is being performed in the municipality of A-Estrada, in Northern Spain.

An age-stratified random sample of the population 18 years and older was drawm from the National Health System Registry


Inclusion Criteria:

  • Female or male
  • 18 years and older
  • No evidence of acute illness, fever, undue stress

Exclusion Criteria:

  • Unable to give informed consent
  • Pregnant
  • Dementia
  • Terminal cancer
  • Allergy to adhesives
  • Any concomitant medical condition that would likely affect the evaluation of device performance

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01796184

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Centro de Saúde A-Estrada
A Estrada, Pontevedra, Spain, 36680
Sponsors and Collaborators
Hospital Clinico Universitario de Santiago
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Study Chair: Arturo Gonzalez-Quintela, PhD, MD Hospital Clinico Universitario de Santiago
Study Chair: Francisco Gude, MD, PhD Hospital Clinico Universitario de Santiago
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Responsible Party: Francisco Gude, PhD, MD, Hospital Clinico Universitario de Santiago Identifier: NCT01796184    
Other Study ID Numbers: FIS11/02219
Xunta de Galicia; ISCIII ( Other Grant/Funding Number: 10CSA918028PR; PI11/02219; RD12/0005/0007 )
First Posted: February 21, 2013    Key Record Dates
Last Update Posted: May 22, 2015
Last Verified: May 2015
Keywords provided by Francisco Gude, Hospital Clinico Universitario de Santiago:
Continuous glucose monitoring
Adult population
Additional relevant MeSH terms:
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Pathologic Processes