Decreased Flow-Mediated Dilatation in Children With Type 1 Diabetes: A Systematic Review and Meta-Analysis

Angiology ◽  
2021 ◽  
pp. 000331972110100
Author(s):  
Lei Cao ◽  
Miao Hou ◽  
Wanping Zhou ◽  
Ling Sun ◽  
Jie Shen ◽  
...  

Type 1 diabetes (T1DM) is a strong risk factor for the development of cardiovascular disease. Flow-mediated dilatation (FMD) is an early noninvasive marker of endothelial function and it predicts future cardiovascular disease. However, the changes in FMD among T1DM children are still controversial. The present meta-analysis aimed to investigate whether FMD is impaired in children with T1DM. PubMed, EMBASE, Cochrane library, and Web of Science were searched for studies comparing FMD in children with T1DM and healthy controls. The Newcastle-Ottawa quality assessment scale for case–control studies was used to assess study quality. Data were pooled using a random effects models to obtain the weighted mean differences (WMD) in FMD and 95% CIs. Overall, 19 studies with 1245 patients and 872 healthy controls were included in this meta-analysis. Children with T1DM had significantly lower FMDs compared with healthy controls (WMD: −2.58; 95% CI: −3.36 to −1.81; P < .001). Meta-regression analysis revealed that low-density lipoprotein cholesterol levels impacted the observed difference in FMD between T1DM and healthy children. This meta-analysis showed that T1DM children have impaired endothelial function, which indicates they are at higher risk of developing cardiovascular disease in later life.

2012 ◽  
Vol 166 (4) ◽  
pp. 567-574 ◽  
Author(s):  
A Szypowska ◽  
A Ramotowska ◽  
K Dżygało ◽  
D Golicki

ObjectiveReal-time continuous glucose monitoring (RT-CGM) provides detailed information on glucose patterns and trends, thus allowing the patients to manage their diabetes more effectively.DesignThe aim of this study was to explore the potential beneficial effects of the use of RT-CGM on diabetes management compared with self blood glucose measurement (SBGM) in patients with type 1 diabetes mellitus (T1DM), by means of a systematic review and meta-analysis of randomized controlled trials (RCTs).MethodsMEDLINE, EMBASE, and the Cochrane Library were searched through by two independent investigators for RCTs concerning the use of RT-CGM in patients with T1DM. Only studies with a similar insulin regimen in the experimental and control groups were included in the analysis.ResultsSeven RCTs (n=948) met the inclusion criteria. Combined data from all studies showed better HbA1c reduction in subjects using RT-CGM compared with those using SBGM (mean difference (MD) −0.25; 95% confidence interval (95% CI): from −0.34 to −0.17; P<0.001). Patients treated with insulin pump and RT-CGM had a lower HbA1c level compared with subjects managed with insulin pump and SBGM (four RCTs, n=497; MD −0.26; 95% CI: from −0.43 to −0.10; P=0.002). The benefits of applying RT-CGM were not associated with an increasing rate of major hypoglycemic episodes. The use of RT-CGM for over 60–70% of time was associated with a significant lowering of HbA1c.ConclusionsRT-CGM is more beneficial than SBGM in reducing HbA1c in patients with type 1 diabetes. Further studies are needed to evaluate the efficacy of this system in the pediatric population, especially in very young children.


2021 ◽  
Vol 8 ◽  
Author(s):  
Ester S. Oh ◽  
Muzi Na ◽  
Connie J. Rogers

Background: Monocyte subsets in humans, i.e., classical (CM), intermediate (IM), and non-classical monocytes (NCM), are thought to differentially contribute to the pathogenesis of atherosclerosis, the leading cause of cardiovascular disease (CVD). However, the association between monocyte subsets and cardiometabolic disorders and CVD is not well-understood. Thus, the aim of the current systematic review and meta-analysis was to evaluate recent findings from clinical studies that examined the association between the distribution of monocyte subsets in subjects with cardiometabolic disorders and CVD compared to healthy controls.Methods: Articles were systematically searched in CINAHL, PubMed and Cochrane Library. Articles were independently screened and selected by two reviewers. Studies that reported the percentage of each monocyte subset were included in the systematic review and meta-analysis. For the meta-analysis, a random-effects model was used to generate pooled standardized mean differences (SMD) between subjects with cardiometabolic disorders and healthy controls.Results: A total of 1,693 articles were screened and 27 studies were selected for qualitative analyses. Among them, six studies were included in the meta-analysis. In total, sample size ranged from 22 to 135 and mean or median age from 22 to 70 years old. We found studies that reported higher percentage and number of IM and/or NCM in subjects with cardiometabolic disorders (9 out of 13 studies) and in subjects with CVD (11 out of 15 studies) compared to healthy controls. In the meta-analysis, the percentage of CM was lower [SMD = −1.21; 95% CI (−1.92, −0.50); P = 0.0009; I2 = 91%] and the percentage of IM [SMD = 0.56; 95% CI (0.23, 0.88); P = 0.0008; I2 = 65%] and NCM [SMD = 1.39; 95% CI (0.59, 2.19); P = 0.0007; I2 = 93%] were higher in subjects with cardiometabolic disorders compared to healthy controls.Conclusions: Individuals with cardiometabolic disorders and CVD may have a higher percentage of IM and NCM than healthy controls. Future studies are needed to evaluate the cause and biological significance of this potential altered distribution of monocyte subsets.


Author(s):  
Yilin Hou ◽  
An Song ◽  
Yuxin Jin ◽  
Qiuyang Xia ◽  
Guangyao Song ◽  
...  

AbstractIt remains debatable whether vitamin D plays any role as a risk factor for type 1 diabetes mellitus (T1DM). We have summarized the effect of circulating 25-hydroxy vitamin D [25(OH)D] concentration on the risk of developing T1DM via a dose–response meta-analysis. We undertook a database search on PubMed, Embase, and Cochrane Library from inception to January 2020. A meta-analysis based on random-effects model was applied. Subgroup analysis and meta-regression were performed to inspect the source of heterogeneity. Dose–response data were examined using the generalized least squares trend estimation method. This study was registered with the PROSPERO (ID: CRD42020166174). In total, 16 studies including 10,605 participants (3913 case patients) were included. The pooled odds ratios (OR) and 95% confidence intervals (95% CI) for the highest versus the lowest 25(OH)D concentration was 0.39 (0.27, 0.57), with a high heterogeneity (I2 = 76.7%, P < 0.001). Meta-regression analysis identified latitude (P = 0.02), adjustment for gender (P = 0.001), and 25(OH)D stratification (P < 0.001) as sources of heterogeneity. Furthermore, the nonlinear dose–response analysis determined the OR (95% CI) of T1DM to be 0.91 (0.90, 0.93) per 10 nmol/L increase in the 25(OH)D concentration. A ‘U’-shaped association was found between serum 25(OH)D concentration and risk of T1DM. The present study highlights the significant inverse association between the circulating 25(OH)D concentration and the risk of T1DM.


2018 ◽  
Vol 34 (S1) ◽  
pp. 82-83
Author(s):  
Thales Silva ◽  
Paulo Henrique Ribeiro Fernandes Almeida ◽  
Vânia Araújo ◽  
Augusto Guerra ◽  
Francisco Acurcio ◽  
...  

Introduction:The use of long-acting insulin analogues have been reported in patients with type 1 diabetes mellitus who exhibit important oscillations of their daily blood glucose, although the therapeutic benefits are lacking. The aim of this study was to evaluate the effectiveness and safety of the insulin analogue glargine compared detemir to support health decision-making.Methods:We performed a systematic review with meta-analysis of observational studies (cohort and registry), available in the MEDLINE (Pubmed), Latin American and Caribbean Health Sciences (LILACS), EMBASE and Cochrane Library databases (accessed August 2017), including research in the electronic journal Diabetes Care and gray literature. Several combinations of terms were used, including disease terms, interventions and type of study. The results evaluated were: glycated hemoglobin; weight gain; occurrence of severe hypoglycemia; total insulin dose; and, fasting capillary glycemia. Methodological quality was assessed using the Newcastle scale. The meta-analyses were performed in Review Manager® 5.2 software using a random effects model. Protocol number CRD42017054925 (International Prospective Register of Ongoing Systematic Reviews).Results:A total of 705 publications, eight cohort studies were included. The quality of included studies was classified as high. In the meta-analysis, the results for episodes of severe hypoglycemia (p = 0.002), measurements of fasting capillary glycemia (p = 0.01), and weight gain (p = 0.001) were favorable for detemir. The glycated hemoglobin endpoint (p = 0.49, heterogeneity = 89 percent) revealed high heterogeneity and no statistically significant difference between groups, showing no difference between the interventions for glycemic control.Conclusions:Although some results are favorable to detemir, it was not possible to identify significant differences in effectiveness and safety between the two analogues evaluated, requiring new long term studies and better quality of methodological studies.


2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Dingjian Wang ◽  
Guixia Pan

Objectives. The purpose of this study was to explore the association between rs2292239 polymorphism in ERBB3 gene and type 1 diabetes (T1D). Methods. A systematic search of studies on the association of rs2292239 polymorphism in ERBB3 gene with T1D susceptibility was conducted in PubMed, Web of science, Elsevier Science Direct, and Cochrane Library. Eventually, 9 published studies were included. The strength of association between rs2292239 polymorphism and T1D susceptibility was assessed by odds ratios (ORs) with its 95% confidence intervals (CIs). Results. A total of 9 case-control studies, consisting of 5369 T1D patients and 6920 controls, were included in the meta-analysis. This meta-analysis showed significant association between ERBB3 rs2292239 polymorphism and T1D susceptibility in overall population (A vs. C, OR: 1.292, 95% CI= 1.224-1.364, PH=0.450, PH is P value for the heterogeneity test). Similar results were found in subgroup analysis by ethnicity. Conclusions. ERBB3 rs2292239 polymorphism is associated with T1D susceptibility and rs2292239-A allele is a risk factor for T1D. However, more large-scale studies are warranted to replicate our findings.


2021 ◽  
Author(s):  
Emma H. Dahlström ◽  
Jani Saksi ◽  
Carol Forsblom ◽  
Nicoline Uglebjerg ◽  
Nina Mars ◽  
...  

Fatty-acid binding protein 4 (FABP4) is implicated in the pathogenesis of cardiometabolic disorders. Pharmacological inhibition or genetic deletion of FABP4 improves cardiometabolic health and protects against atherosclerosis in preclinical models. As cardiovascular disease (CVD) is common in type 1 diabetes, we examined the role of FABP4 for the development of complications in type 1 diabetes, focusing on a functional, low-expression, variant (rs77878271) in the promoter of the <i>FABP4</i> gene. For this, we assessed the risk of CVD, stroke, coronary artery disease (CAD), end-stage kidney disease (ESKD), and mortality using Cox proportional-hazard models for the <i>FABP4</i> rs77878271 in 5,077 Finnish individuals with type 1 diabetes. The low-expression G-allele of<b> </b>rs77878271 increased the risk of CVD, independently of confounders. <a>Findings were tested for replication in 852 Danish and 3,678 Finnish individuals with type 1 diabetes. </a>In the meta-analysis, each G-allele increased the risk of stroke by 26% (p=0.04), CAD by 26% (p=0.006), and CVD by 17% (p=0.003). In Mendelian Randomization, a decrease in FABP4 increased CAD 2.4-fold. Hence<b>, </b>in contrast to the general population, the low-expression G-allele of rs77878271 increased CVD risk in type 1 diabetes, suggesting that genetically low FABP4<i> </i>levels may be detrimental in the context of type 1 diabetes.


2021 ◽  
Author(s):  
Emma H. Dahlström ◽  
Jani Saksi ◽  
Carol Forsblom ◽  
Nicoline Uglebjerg ◽  
Nina Mars ◽  
...  

Fatty-acid binding protein 4 (FABP4) is implicated in the pathogenesis of cardiometabolic disorders. Pharmacological inhibition or genetic deletion of FABP4 improves cardiometabolic health and protects against atherosclerosis in preclinical models. As cardiovascular disease (CVD) is common in type 1 diabetes, we examined the role of FABP4 for the development of complications in type 1 diabetes, focusing on a functional, low-expression, variant (rs77878271) in the promoter of the <i>FABP4</i> gene. For this, we assessed the risk of CVD, stroke, coronary artery disease (CAD), end-stage kidney disease (ESKD), and mortality using Cox proportional-hazard models for the <i>FABP4</i> rs77878271 in 5,077 Finnish individuals with type 1 diabetes. The low-expression G-allele of<b> </b>rs77878271 increased the risk of CVD, independently of confounders. <a>Findings were tested for replication in 852 Danish and 3,678 Finnish individuals with type 1 diabetes. </a>In the meta-analysis, each G-allele increased the risk of stroke by 26% (p=0.04), CAD by 26% (p=0.006), and CVD by 17% (p=0.003). In Mendelian Randomization, a decrease in FABP4 increased CAD 2.4-fold. Hence<b>, </b>in contrast to the general population, the low-expression G-allele of rs77878271 increased CVD risk in type 1 diabetes, suggesting that genetically low FABP4<i> </i>levels may be detrimental in the context of type 1 diabetes.


2021 ◽  
Author(s):  
Martin ◽  
Yi Zhou ◽  
Tatsuya Takagi ◽  
Yu-Shi Tian

Abstract Aims: To assess the comparative efficacy and safety of second-generation basal insulins (glargine U300 and degludec U100) vs. neutral protamine Hagedorn (NPH) and first-generation basal insulins (glargine U100 and detemir) in type 1 diabetes (T1D) adults. Methods: PubMed, the Cochrane Library, ClinicalTrials.gov, and Google Scholar (until January 2021) were systematically searched. Randomized controlled trials (RCTs) with ≥ 12 weeks of follow-up comparing efficacy (HbA1c) or safety (hypoglycemia and weight gain) between second-generation basal insulins vs. other basal insulins in T1D adults were included. Bayesian network meta-analyses were used to estimate risk ratio, hazard ratio, and mean difference. Grading of Recommendations, Assessment, Development and Evaluation (GRADE) was used to appraise evidence certainty. Results: Eighteen RCTs (≥ 24 weeks of follow-up) involving 7,283 randomized participants were included for main analysis. Moderate to high certainty evidence suggested that second-generation basal insulins showed equivalent HbA1c reduction compared with NPH and first-generation basal insulins. Compared with second-generation basal insulins, low to high certainty evidence suggested that NPH was associated with a higher risk of patients experiencing severe hypoglycemia; NPH and first-generation basal insulins were associated with a higher rate of nocturnal confirmed hypoglycemic events. For the weight gain, glargine U300 was comparable to detemir (low certainty), but degludec U100 was greater than detemir (moderate certainty).Conclusions: In T1D adults, second-generation basal insulins maintained equivalent efficacy of glycemic control (moderate to high certainty), with differences in safety (low to high certainty) compared with NPH and first-generation basal insulins during ≥ 24 weeks of follow-up.


2015 ◽  
Vol 173 (1) ◽  
pp. 101-109 ◽  
Author(s):  
Esther Donga ◽  
Olaf M Dekkers ◽  
Eleonora P M Corssmit ◽  
Johannes A Romijn

ObjectiveThe aim of this study was to perform a systematic review and meta-analysis on insulin resistance in adult patients with type 1 diabetes mellitus compared to healthy controls, assessed by hyperinsulinemic euglycemic clamp studies.Design and methodsWe conducted a systematic search of publications using PubMed, EMBASE, Web of Science and COCHRANE Library. Hyperinsulinemic euglycemic clamp studies comparing adult patients with type 1 diabetes mellitus to healthy controls were eligible. Primary outcome measures were pooled mean differences of insulin sensitivity of endogenous glucose production (EGP), of glucose uptake and of lipolysis. We estimated mean (standardized) differences and 95% CIs using random effects meta-analysis.ResultsWe included 38 publications in this meta-analysis. The weighed mean differences in EGP during hyperinsulinemia between patients and controls was 0.88 (95% CI: 0.47, 1.29) in the basal state and 0.52 (95% CI: 0.09, 0.95) in insulin stimulated conditions, indicating decreased hepatic insulin sensitivity in patients. Insulin sensitivity of glucose uptake was either reported as M value (M), glucose infusion rate (GIR), glucose disposal rate (GDR) or metabolic clearance rate (MCR). Weighed mean differences were similar for M −3.98 (95% CI: −4.68, −3.29) and GIR −4.61 (95% CI: −5.86, −3.53). Weighed mean difference for GDR was −2.43 (95% CI: −3.03, −1.83) and −3.29 (95% CI: −5.37, −1.22) for MCR, indicating decreased peripheral insulin sensitivity in patients. Insulin mediated inhibition of lipolysis was decreased in patients, reflected by increased non-esterified fatty acid levels.ConclusionsInsulin resistance is a prominent feature of patients with type 1 diabetes mellitus and involves hepatic, peripheral and adipose tissues.


2019 ◽  
Vol 40 (43) ◽  
pp. 3559-3566 ◽  
Author(s):  
Scott T Chiesa ◽  
Marietta Charakida ◽  
Eve McLoughlin ◽  
Helen C Nguyen ◽  
Georgios Georgiopoulos ◽  
...  

Abstract Aims High-density lipoprotein (HDL) function may be altered in patients with chronic disease, transforming the particle from a beneficial vasoprotective molecule to a noxious pro-inflammatory equivalent. Adolescents with Type 1 diabetes often have elevated HDL, but its vasoprotective properties and relationship to endothelial function have not been assessed. Methods and results Seventy adolescents with Type 1 diabetes (age 10–17 years) and 30 age-matched healthy controls supplied urine samples for the measurement of early renal dysfunction (albumin:creatinine ratio; ACR), blood samples for the assessment of cardiovascular risk factors (lipid profiles, HDL functionality, glycaemic control, and inflammatory risk score), and had their conduit artery endothelial function tested using flow-mediated dilation (FMD). HDL-c levels (1.69 ± 0.41 vs. 1.44 ± 0.29mmol/L; P < 0.001), and glycated haemoglobin (HbA1c) (8.4 ± 1.2 vs. 5.4 ± 0.2%; P < 0.001) were increased in all patients compared with controls. However, increased inflammation and HDL dysfunction were evident only in patients who also had evidence of early renal dysfunction (mean ± standard deviation for high-ACR vs. low-ACR and healthy controls: inflammatory risk score 11.3 ± 2.5 vs. 9.5 ± 2.4 and 9.2 ± 2.4, P < 0.01; HDL-mediated nitric-oxide bioavailability 38.0 ± 8.9 vs. 33.3 ± 7.3 and 25.0 ± 7.7%, P < 0.001; HDL-mediated superoxide production 3.71 ± 3.57 vs. 2.11 ± 3.49 and 1.91 ± 2.47nmol O2 per 250 000 cells, P < 0.05). Endothelial function (FMD) was impaired only in those who had both a high inflammatory risk score and high levels of HDL-c (P < 0.05). Conclusion Increased levels of HDL-c commonly observed in individuals with Type 1 diabetes may be detrimental to endothelial function when accompanied by renal dysfunction and chronic inflammation.


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