Background & Aims: The role of glycemic index of the diet in glucose control and cardiovascular prevention is still not clear. The aim of this study was to determine the effects of hypocaloric diets with different glycemic indexes and glycemic loads on endothelial function and glycemic variability in nondiabetic participants at increased cardiovascular risk.
Methods: Forty nondiabetic obese participants were randomly assigned to a three-month treatment with either a low glycemic index (LGI; n=19) or high glycemic index (HGI; n=21) hypocaloric diet with similar macronutrient and fiber content. Endothelial function was measured as flow-mediated dilatation (FMD) of the brachial artery before and after dieting. In addition, 48-h continuous subcutaneous glucose monitoring was done before and after dieting in a subgroup of 24 participants.
Results: The amount of weight loss after dieting was similar in both groups. The glycemic index of the diet significantly influenced the FMD (P<0.005). In particular, the change of FMD was 2.3±2.6% following the LGI diet, and -0.9±3.6% after the HGI diet (P<0.005). The mean 48-h glycemia decreased significantly after dietary treatment (P<0.05), but no significant effect of the glycemic index of the diet on results was observed. The glycemic index of the diet significantly influenced the 48-h glycemic variability measured as coefficient of variability (CV%; P<0.001). The CV% decreased after the LGI diet (from 23.5 to 20.0%) and increased after the HGI diet (from 23.6 to 26.6%). The change in percentage of FMD was inversely correlated with the change in the 48-h glycemic CV% (r=-0.45; P<0.05).
Conclusions: Endothelial function and glycemic variability ameliorate in association with the adherence to an LGI hypocaloric diet in nondiabetic obese persons.
Clinical Trial Registration Number: ISRCTN56834511.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.clnu.2012.10.006 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Adrenomedullin Inhibits the Efficacy of Combined Immunotherapy and Targeted Therapy in Biliary Tract Cancer by Disrupting Endothelial Cell Functions.
J Cell Mol Med
March 2025
Hepatobiliary Center, the First Affiliated Hospital of Nanjing Medical University & Research Unit of Liver Transplantation and Transplant Immunology, Chinese Academy of Medical Sciences, Nanjing, Jiangsu, China.
The global incidence of biliary tract cancer (BTC) is on the rise, presenting a substantial healthcare challenge. The integration of immune checkpoint inhibitors (ICIs) with molecularly targeted therapies is emerging as a strategy to enhance immune responses. However, the efficacy and underlying mechanisms of these treatments in BTC are still largely unexplored.
View Article and Find Full Text PDFThe IL-6 axis in vascular inflammation: effects of IL-6 receptor blockade on vascular lesions from patients with giant-cell arteritis.
Ann Rheum Dis
March 2025
Vasculitis Research Unit, Department of Autoimmune Diseases, Hospital Clínic (member of European Reference Network [ERN]-for rare diseases RITA), University of Barcelona, Centre de Recerca biomèdica (CRB)-CELLEX, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain. Electronic address:
Objectives: Blocking interleukin (IL)-6-receptor with tocilizumab has been a major advance in the treatment of giant-cell arteritis (GCA), supporting a crucial role of IL-6 receptor signalling. However, nearly half of the patients are not able to maintain glucocorticoid- free remission with tocilizumab. The impact of tocilizumab on vascular lesions of GCA is largely unknown since conflicting results have been obtained by imaging.
View Article and Find Full Text PDFMechanisms of cognitive impairment associated with cerebral infarction.
Zhong Nan Da Xue Xue Bao Yi Xue Ban
October 2024
Department of Neurology, Second Xiangya Hospital, Central South University, Changsha 410011, China.
Cerebral infarction is a common type of stroke with high incidence and disability rates, and most patients experience varying degrees of cognitive impairment. The manifestations and severity of post-infarction cognitive impairment are influenced by multiple interacting factors, and its pathophysiological mechanisms are highly complex, involving pericyte degeneration, excessive generation of reactive oxygen species (ROS), overproduction of glutamate, and overactivation of autophagy. After cerebral infarction, abnormal pericyte function activates neuroinflammation and facilitates the entry of inflammatory mediators into the brain; detachment of pericytes from blood vessels disrupts the integrity of the blood-brain barrier.
View Article and Find Full Text PDFExpression and localization of HBsAg in corneas from HBsAgseropositive donors preserved in mediumterm preservation solution and glycerol.
Zhong Nan Da Xue Xue Bao Yi Xue Ban
October 2024
Department of Ophthalmology, Third Xiangya Hospital, Central South University, Changsha 410013, China.
Objectives: Due to the severe shortage of donor corneas for transplantation in China, corneal component transplantation may expand the available donor pool. This study aims to evaluate the safety and feasibility of corneal component transplantation by examining the distribution of hepatitis B surface antigen (HBsAg) in corneas from HBsAg-seropositive donors under different storage media.
Methods: Ten corneas (from 6 donors) donated between December 2019 and March 2021 and stored at the Eye Bank of Xiangya Third Hospital, Central South University, were analyzed.
Phosphatidylcholine synthesis and remodeling in brain endothelial cells.
J Lipid Res
March 2025
LIMES Life and Medical Sciences Institute, University of Bonn, Bonn, Germany. Electronic address:
Mammalian cells synthesize hundreds of different variants of their prominent membrane lipid phosphatidylcholine (PC), all differing in the side chain composition. This batch is constantly remodeled by the Lands cycle, a metabolic pathway replacing one chain at the time. Using the alkyne lipid lyso-phosphatidylpropargylcholine (LpPC), a precursor and intermediate in PC synthesis and remodeling, we study both processes in brain endothelial bEND3 cells.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!