Renate Kruschitz1, Maria Wakolbinger2, Karin Schindler3, Gerhard Prager4, Friedrich Hoppichler5, Rodrig Marculescu6, Bernhard Ludvik7. 1. Division of Endocrinology and Metabolism, Department of Internal Medicine III, Medical University of Vienna, Austria; Division of Internal Medicine, General Public Hospital of the Order of Saint Elisabeth, Klagenfurt, Austria. 2. Division of Endocrinology and Metabolism, Department of Internal Medicine III, Medical University of Vienna, Austria; Department of Social and Preventive Medicine, Centre for Public Health, Medical University of Vienna, Austria. Electronic address: maria.wakolbinger@meduniwien.ac.at. 3. Division of Endocrinology and Metabolism, Department of Internal Medicine III, Medical University of Vienna, Austria. 4. Division of General Surgery, Department of Surgery, Medical University of Vienna, Austria. 5. Special Institute for Preventive Cardiology and Nutrition - SIPCAN, Salzburg, Austria; Division of Internal Medicine, General Public Hospital of the Brothers of Saint John of God Salzburg, Austria. 6. Clinical Institute for Medical and Chemical Laboratory Diagnostics, Department of Laboratory Medicine, Medical University of Vienna, Austria. 7. Division of Endocrinology and Metabolism, Department of Internal Medicine III, Medical University of Vienna, Austria; Department of Medicine 1, Karl Landsteiner Institute for Obesity and Metabolic Disorders, Rudolfstiftung Hospital, Vienna, Austria.
Abstract
BACKGROUND AND AIMS: Bariatric patients often suffer from vitamin D (VD) deficiency, and both, morbid obesity and VD deficiency, are related to an adverse effect on cardiovascular disease (CVD) risk. Therefore, we assessed the change of known CVD risk factors and its associations during the first 12 months following one-anastomosis gastric bypass (OAGB). METHODS AND RESULTS: In this secondary analysis, CVD risk factors, medical history and anthropometric data were assessed in fifty VD deficient (25-hydroxy-vitamin D (25(OH)D) <75 nmol/l) patients, recruited for a randomized controlled trial of VD supplementation. Based on previous results regarding bone-mass loss and the association between VD and CVD risk, the study population was divided into patients with 25(OH)D ≥50 nmol/l (adequate VD group; AVD) and into those <50 nmol/l (inadequate VD group; IVD) at 6 and 12 months (T6/12) postoperatively. In the whole cohort, substantial remission rates for hypertension (38%), diabetes (30%), and dyslipidaemia (41%) and a significant reduction in CVD risk factors were observed at T12. Changes of insulin resistance markers were associated with changes of total body fat mass (TBF%), 25(OH)D, and ferritin. Moreover, significant differences in insulin resistance markers between AVD and IVD became evident at T12. CONCLUSION: These findings show that OAGB leads to a significant reduction in CVD risk factors and amelioration of insulin resistance markers, which might be connected to reduced TBF%, change in 25(OH)D and ferritin levels, as an indicator for subclinical inflammation, and an adequate VD status. REGISTERED AT CLINICALTRIALS.GOV: (Identifier: NCT02092376) and EudraCT (Identifier: 2013-003546-16).
RCT Entities:
BACKGROUND AND AIMS: Bariatric patients often suffer from vitamin D(VD) deficiency, and both, morbid obesity and VD deficiency, are related to an adverse effect on cardiovascular disease (CVD) risk. Therefore, we assessed the change of known CVD risk factors and its associations during the first 12 months following one-anastomosis gastric bypass (OAGB). METHODS AND RESULTS: In this secondary analysis, CVD risk factors, medical history and anthropometric data were assessed in fifty VD deficient (25-hydroxy-vitamin D (25(OH)D) <75 nmol/l) patients, recruited for a randomized controlled trial of VD supplementation. Based on previous results regarding bone-mass loss and the association between VD and CVD risk, the study population was divided into patients with 25(OH)D ≥50 nmol/l (adequate VD group; AVD) and into those <50 nmol/l (inadequate VD group; IVD) at 6 and 12 months (T6/12) postoperatively. In the whole cohort, substantial remission rates for hypertension (38%), diabetes (30%), and dyslipidaemia (41%) and a significant reduction in CVD risk factors were observed at T12. Changes of insulin resistance markers were associated with changes of total body fat mass (TBF%), 25(OH)D, and ferritin. Moreover, significant differences in insulin resistance markers between AVD and IVD became evident at T12. CONCLUSION: These findings show that OAGB leads to a significant reduction in CVD risk factors and amelioration of insulin resistance markers, which might be connected to reduced TBF%, change in 25(OH)D and ferritin levels, as an indicator for subclinical inflammation, and an adequate VD status. REGISTERED AT CLINICALTRIALS.GOV: (Identifier: NCT02092376) and EudraCT (Identifier: 2013-003546-16).