Identification of Biomarkers of Response After Bariatric Surgery in Morbidly Obese Patients (PREDI-BAR)
8. února 2021 aktualizováno: Andreea Ciudin, Hospital Universitari Vall d'Hebron Research Institute
The prevalence of obesity in Spain is about 21.6%. The discouraging results provided by dietary treatment, together with the lack of funding for pharmacological treatment, have led to the progressive use of bariatric surgery (CB). Besides weight loss, CB associates a beneficial effect on metabolic comorbidities. However, 25-30% of operated patients present a weight response considered inappropriate, they do not resolve their comorbidities and/or present a weight-regain shortly after surgery. Therefore, predictive strategies are necessary to allow a correct selection of obese patients who are candidates for CB.
The main hypothesis of the study is that various factors such as psychopathological profile, body composition and metabolic alterations related to morbid obesity can influence the response to bariatric surgery.
Přehled studie
Postavení
Nábor
Podmínky
Detailní popis
The investigators have designed a prospective study in which 200 consecutive patients from the outpatient clinic of the Morbidly Obesity Unit of the Vall d'Hebron Hospital will be included, meeting criteria for bariatric surgery (with BMI> 40 kg / m2 or BMI> 35 kg /m2 in the presence of comorbidities) and will undergo surgery in the investigator's center between September 2018 and September 2019.
All patients will undergo (baseline, month, 6, 12 and 24 month): complete clinical history, analysis complete biochemistry, 2 blood samples will be extracted to study metabolomics, stool sample for microbiota study, bioimpedance for the study of body composition, determination of AGEs in the skin and lens, cognitive function assessment, retinal function assessment by microperimetry and they will be asked to complete several specific questionnaires for the evaluation of the psychopathological profile and the dietetic survey.
Typ studie
Pozorovací
Zápis (Očekávaný)
200
Kontakty a umístění
Tato část poskytuje kontaktní údaje pro ty, kteří studii provádějí, a informace o tom, kde se tato studie provádí.
Studijní kontakt
- Jméno: Andreea Ciudin, MD, PhD
- Telefonní číslo: 697817352
- E-mail: aciudin@vhebron.net
Studijní místa
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Barcelona, Španělsko, 08035
- Nábor
- Andreea Ciudin
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Kontakt:
- Andreea Ciudin, MD, PhD
- Telefonní číslo: 697817352
- E-mail: aciudin@vhebron.net
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Kontakt:
- Diana Romero Godoy, Nurse
- E-mail: diana.romero@vhir.org
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Dílčí vyšetřovatel:
- Diana Romero Godoy, Nurse
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Dílčí vyšetřovatel:
- Enzamaria Fidilio, MD
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Vrchní vyšetřovatel:
- Andreea Ciudin, MD, PhD
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Dílčí vyšetřovatel:
- Angel Ortiz, MD
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Dílčí vyšetřovatel:
- Marta Comas, Dietis
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Dílčí vyšetřovatel:
- Marta Sanchez, MD
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Kritéria účasti
Výzkumníci hledají lidi, kteří odpovídají určitému popisu, kterému se říká kritéria způsobilosti. Některé příklady těchto kritérií jsou celkový zdravotní stav osoby nebo předchozí léčba.
Kritéria způsobilosti
Věk způsobilý ke studiu
18 let až 65 let (Dospělý, Starší dospělý)
Přijímá zdravé dobrovolníky
Ne
Pohlaví způsobilá ke studiu
Všechno
Metoda odběru vzorků
Vzorek nepravděpodobnosti
Studijní populace
Consecutive patients that are attended at our outpatient clinic of the Morbid Obesity Unit of Vall Hebron University Hospital, that will undergo BS between September 2018 and December 2019.
Popis
Inclusion Criteria:
- Patients fulfilling criteria for bariatric surgery (BS).
- Signed informed consent fir the BS and the study.
- Previous accomplishment of the preoperative protocol for the BS at our site.
- undergo BS between September 2018 and December 2019
- Able to read and understand the specific questionnaires.
Exclusion Criteria:
- Any contraindication for the bariatric surgery.
- Impossibility to follow-up at our site (eg: patients from outside out community).
Studijní plán
Tato část poskytuje podrobnosti o studijním plánu, včetně toho, jak je studie navržena a co studie měří.
Jak je studie koncipována?
Detaily designu
- Observační modely: Kohorta
- Časové perspektivy: Budoucí
Kohorty a intervence
Skupina / kohorta |
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Bariatric surgery
200 consecutive patients that will undergo bariatric surgery as a routinary procedure at our site
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Co je měření studie?
Primární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
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Evolution of the body mass index in morbidly obesity patients after bariatric surgery (BS).
Časové okno: 24month
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For the assessment of the evolution after bariatric surgery the investigators will use the body mass index parameter (BMI), calculated with the following formula: Body mass index (BMI) will be calculated as weight (kg)/height (m2). Changes in BMI, will be evaluated at 1, 6, 12 and 24 month after bariatric surgery. |
24month
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Evolution of the excess of weight loss % (EWL%) after bariatric surgery.
Časové okno: 24 month
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- Excess of weight loss % (EWL%) will be calculated using the following formula: pre-bariatric surgery weight (kg)-visit weight (kg)/pre-bariatric surgery weight (kg)- ideal weight (for BMI 25) (kg) x 100%.
Changes in EWL% will be evaluated at 1, 6, 12 and 24 month after bariatric surgery.
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24 month
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Evolution of the total weight loss after bariatric surgery
Časové okno: 24 month
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-Total weight loss (TWL) will be calculated as: pre-bariatric surgery weight (kg)- visit weight (kg).
Changes in TWL will be evaluated at 1, 6, 12 and 24 month after bariatric surgery.
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24 month
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Sekundární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
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Evaluation of the body composition scores before and after bariatric surgery by means of bioimpedanciometry.
Časové okno: 24 month
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All the patients will undergo before and after bariatric surgery (after 1,6, 12, and 24 month) the bioimpedance Bodystat QuadScan 4000 evaluation.
The results are expressed in kg of free fatty mass and fatty mass.
The change in Kg of the free fatty mass and fatty mass regarding the baseline will be evaluated.
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24 month
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Evaluation of the Advanced Glycation End products (AGEs) before and after bariatric surgery.
Časové okno: 24 month
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All the patients will undergo AGEs evaluation before, at 6, 12, 24 months after bariatric surgery (eye and skin using CLEARPATH DS-120 and microCAYA-AGEreader respectively).
The presence of the AGEs is automatically calculated as standard deviation from the normal values for age and gender.
The differences between the baseline value, at 6,12 and 24 month will be evaluated.
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24 month
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Evaluation of neuropsychological scores before and after bariatric surgery: eating attitudes
Časové okno: 24month
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Eating Attitudes Test (EAT) evaluates the possible eating disorders of the patients.
The test will be used before, at 6, 12, and 24month after bariatric surgery and the scores will be compared.
The investigators will search for correlations with the BMI, EWL% and TWL changes.
The subjects will have to answer 40 items, each of it measured from 0 to 3, total score may range between 0 and 120.
The accepted cut-off for diagnosis eating disorders is more than 20 for spanish population.
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24month
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Evaluation of neuropsychological scores before and after bariatric surgery: Attention-Deficit Hyperactivity Disorder (ADHD)
Časové okno: 24month
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ADHD rating scale will be used before, at 6, 12, and 24month after bariatric surgery and the scores will be compared.
The investigators will evaluate the existence of correlations with the BMI, EWL% and TWL changes.
The scale ranges between 0-27 points, the highest the value, the higher de attention deficit and hyperactivity.
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24month
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Evaluation of neuropsychological scores before and after bariatric surgery: Sheehan Disability Inventory (SDI).
Časové okno: 24 month
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Sheehan Disability Inventory (SDI) scale will be used before, at 6, 12, and 24month after bariatric surgery and the scores will be compared.
The investigators will evaluate the existence of correlations with the BMI, EWL% and TWL changes.
The Sheehan Disability Inventory evaluates the social fobia and the score ranges between 0-30.
A score > 15 is considered pathological.
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24 month
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Evaluation of neuropsychological scores before and after bariatric surgery: Zuckerman-Kuhlman Personality Questionnaire (ZKPQ).
Časové okno: 24month
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ZKPQ personality evaluation will be used before, at 6, 12, and 24month after bariatric surgery and the scores will be compared.
The investigators will evaluate the existence of correlations with the BMI, EWL% and TWL changes.
ZKPQ is a quantitative scale which evaluates 6 personality dimensions: aggressivity (19 points), anxiety (19 points), impulsivity (17 points), activity (17 points), sociability (17 points).
There is no clear cut-off for this test.
In consequence, there will be evaluated only the changes after the bariatric surgery, compared with the baseline score.
The higher the score the higher the personality disorder.
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24month
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Evaluation of neuropsychological scores before and after bariatric surgery: COPE- stress management strategies.
Časové okno: 24month
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COPE test will be used before, at 6, 12, and 24month after bariatric surgery and the scores will be compared.
The investigators will evaluate the existence of correlations with the BMI, EWL% and TWL changes.
COPE is a quantitative scale which evaluates 15 strategies of stress coping.
The total score ranges between 15-60 points.
There is a direct relation between the score and the ability to manage the stress, but no clear cut-off for this test exists.
In consequence, we will only evaluate the changes after the bariatric surgery regarding the baseline score.
The highest score indicates better strategies to cope the stress.
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24month
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Evaluation of neuropsychological scores before and after bariatric surgery: ROTTER´s locus of control scale.
Časové okno: 24month
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ROTTER´s locus of control scale test will be used before, at 6, 12, and 24month after bariatric surgery and the scores will be compared.
The investigators will evaluate the existence of correlations with the BMI, EWL% and TWL changes.
COPE is a quantitative scale which a total score ranging between 0-29 points.
The cut-off value <15 defines the internal locus of control.
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24month
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Evaluation of neuropsychological scores before and after bariatric surgery: YALE food addiction.
Časové okno: 24month
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YALE food addiction scale test will be used before, at 6, 12, and 24month after bariatric surgery and the scores will be compared.
The investigators will evaluate the existence of correlations with the BMI, EWL% and TWL changes.
There is a direct relation between the score and the food addiction, is a quantitative scale but there is no clear cut-off.
There will be evaluated the changes in the score at 6,12, and 24 month after the bariatric surgery, comparing with baseline.
The highest the score, the higher the food addiction.
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24month
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Evaluation of neuropsychological scores before and after bariatric surgery:The Bariatric Analysis and Reporting Outcome System (B.A.R.OS).
Časové okno: 24month
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B.A.R.O.S test will be used before, at 6, 12, and 24month after bariatric surgery and the scores will be compared.
The investigators will evaluate the existence of correlations with the BMI, EWL% and TWL changes.
B.A.R.O.S. is a quantitative questionnaire evaluating the quality of life after the bariatric surgery.
The scale ranges between 0 and 9.
The higher the score the highest the quality of life of the patient.
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24month
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Evaluation of neuropsychological scores before and after bariatric surgery: The State-Trait Anxiety Inventory (STAI).
Časové okno: 24month
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STAI anxiety questionnaire evaluates the degree of the anxiety of the patient and will be used before, at 6, 12, and 24month after bariatric surgery and the scores will be compared.
The investigators will evaluate the existence of correlations with the BMI, EWL% and TWL changes.
The score ranges between 0 and 60.
A cut-off value> 19 is considered pathological anxiety.
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24month
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Evaluation of neuropsychological scores before and after bariatric surgery: WPAI (working productivity questionnaire).
Časové okno: 24month
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WPAI questionnaire will be used before, at 6, 12, and 24month after bariatric surgery and the results will be compared.
The investigators will evaluate the existence of correlations with the BMI, EWL% and TWL changes.
There is a qualitative score, evaluating the working status of the patient: retiree, active, off-work>6month, unemployed, permanent occupational disability.
Percentages of each category will be evaluated at each time.
Ej: % of unemployed, etc.
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24month
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Evaluation of neuropsychological scores before and after bariatric surgery: Beck Depression Inventory (BDI)
Časové okno: 24month
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BDI evaluates if depression exists and its degree.
It will be used before, at 6, 12, and 24month after bariatric surgery and the results will be compared.
The investigators will evaluate the existence of correlations with the BMI, EWL% and TWL changes.
The score ranges between 0-40.
0-10: normal; 10-16 mild emotional; 17-20: borderline clinical depression; 21-30 moderate depression; 31-40 severe depression.
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24month
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Evaluation of the congnitive function before and after bariatric surgery
Časové okno: 24 month
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Minimental State Evaluation Test and Montreal Cognitive Assessment test will be used before and at 12 and 24 month after bariatric surgery
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24 month
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Evaluation of the utility of the retinal function evaluation in the detection of cognitive disfunction before and after bariatric surgery
Časové okno: 24 month
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Retinal microperimetry using MAIA 3rd generation microperimeter will be used before and at 12 and 24 month after the bariatric surgery
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24 month
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Spolupracovníci a vyšetřovatelé
Zde najdete lidi a organizace zapojené do této studie.
Termíny studijních záznamů
Tato data sledují průběh záznamů studie a předkládání souhrnných výsledků na ClinicalTrials.gov. Záznamy ze studií a hlášené výsledky jsou před zveřejněním na veřejné webové stránce přezkoumány Národní lékařskou knihovnou (NLM), aby se ujistily, že splňují specifické standardy kontroly kvality.
Hlavní termíny studia
Začátek studia (Aktuální)
1. dubna 2018
Primární dokončení (Očekávaný)
31. prosince 2021
Dokončení studie (Očekávaný)
1. dubna 2022
Termíny zápisu do studia
První předloženo
4. září 2018
První předloženo, které splnilo kritéria kontroly kvality
19. prosince 2018
První zveřejněno (Aktuální)
24. prosince 2018
Aktualizace studijních záznamů
Poslední zveřejněná aktualizace (Aktuální)
10. února 2021
Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality
8. února 2021
Naposledy ověřeno
1. února 2021
Více informací
Termíny související s touto studií
Klíčová slova
Další relevantní podmínky MeSH
Další identifikační čísla studie
- PR(AG)320-2018
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Studuje lékový produkt regulovaný americkým FDA
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Studuje produkt zařízení regulovaný americkým úřadem FDA
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