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Association of Glycemic Variability and Time in Range with Lipid Profile in Type 1 Diabetes

Title
Association of Glycemic Variability and Time in Range with Lipid Profile in Type 1 Diabetes
Type
Thesis
Year
2023-05-23
Authors
Mariana Isabel Salsa Castelo
(Author)
FMUP
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Scientific classification
FOS: Medical and Health sciences > Clinical medicine
Other information
Resumo (PT): Introdução: A hiperglicemia está associada a anomalias das lipoproteínas. O objetivo deste estudo foi analisar, em pacientes com Diabetes Tipo 1 (DT1), a associação entre o controlo glicémico e o perfil lipídico, com foco na variabilidade glicémica e no tempo no alvo, ambos parâmetros de Monitorização Contínua da Glicose (MCG). Métodos: Realizámos um estudo de coorte retrospetivo em pacientes com DT1. Analisámos os dados clínicos, HbA1C, parâmetros de MCG e perfil lipídico em dois momentos distanciados entre 6 a 18 meses. Avaliámos a associação entre HbA1C e os parâmetros de MCG com o perfil lipídico através de uma análise transversal (n=242) e de uma análise longitudinal (n=90). Resultados: A idade média da população em estudo foi 36.6 ± 12.6 anos, 51.7% eram do sexo masculino, e a duração média da DT1 foi 16.8 ± 10.3 anos. Na análise transversal, maior HbA1c, maior indicador de gestão da glicose (ICG), maior tempo acima do alvo e menor tempo no alvo estavam associados a níveis elevados de triglicerídeos. Na análise longitudinal, o aumento do tempo abaixo do alvo estava associado à diminuição do colesterol LDL. Em ambas as análises, o aumento do coeficiente de variabilidade (CV) estava associado à diminuição significativa do HDL colesterol. HbA1C e parâmetros de MCG nunca foram significativamente associados com CV nem com colesterol total ou LDL. Conclusões: Observámos uma associação negativa do CV com colesterol HDL e uma associação positiva da glicemia com os triglicerídeos. Estes achados sugerem que parâmetros de MCG podem ser uma ferramenta útil para guiar a melhoria do controlo glicémico e do perfil lipídico na DT1.
Abstract (EN): Background: Hyperglycemia is associated with abnormalities of lipoproteins. The aim of this study was to analyze, in patients with Type 1 Diabetes (T1D), the association of glycemic control with lipid profile, focusing on glycemic variability and time in range obtained from Continuous Glucose Monitoring (CGM). Methods: We performed a retrospective cohort in patients with T1D. We analyzed clinical parameters, HbA1c, CGM and lipid profile in two moments 6 to 18 months apart. We evaluated the association of HbA1c and CGM metrics with lipid profile in cross-sectional (n=242) and longitudinal (n=90) analyses. Results: The mean age of the study population was 36.6 ± 12.6 years, 51.7% were male, and the mean duration of diabetes was 16.8 ± 10.3 years. In the cross-sectional analysis, higher HbA1c, higher glucose management indicator (GMI), higher time above range and lower time in range were associated with higher triglyceride levels. In the longitudinal analysis, an increase in time below range was associated with a decrease of HDL cholesterol. In both analyses, an increase in the coefficient of variability (CV) was associated with a significant decrease of HDL cholesterol. Total cholesterol and LDL cholesterol were not associated with HbA1c and CGM. Conclusions: We observed a negative association between CV and HDL cholesterol levels and a positive association between hyperglycemia metrics and triglyceride levels. These findings suggest that CGM parameters may be a helpful tool to guide the improvement of both glycemic control and lipid profile in T1D.
Language: English
License type: Click to view license CC BY-NC-ND
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