Effect of early glycemic control on HbA1c tracking and development of vascular complications after 5 years of childhood onset type 1 diabetes: Systematic review and meta-analysis

"Hyperglycemic Memory": Observational Evidence to Experimental Inference

Several epidemiological studies have appreciated the impact of "duration" and "level" of hyperglycemia on the initiation and development of chronic complications of diabetes. However, glycemic profiles could not fully explain the presence/absence and severity of diabetic complications. Genetic issues and concepts of "hyperglycemic memory" have been introduced as additional influential factors involved in the pathobiology of late complications of diabetes. In the extended phase of significant diabetes randomized, controlled clinical trials, including DCCT/EDIC and UKPDS, studies have concluded that the quality of glycemic or metabolic control at the early time around the diabetes onset could maintain its protective or detrimental impact throughout the following diabetes course. There is no reliable indication of the mechanism by which the transient exposure to a given glucose concentration level could evoke a consistent cellular response at target tissues at the molecular levels. Some biological phenomena, such as the production and the concentration of advanced glycation end products (AGEs), reactive oxygen species (ROS) and protein kinase C (PKC) pathway activations, epigenetic changes, and finally, the miRNAs-mediated pathways, may be accountable for the development of hyperglycemic memory. This work summarizes evidence from previous experiments that may substantiate the hyperglycemic memory soundness by its justification in molecular terms.

Long-term effects of non-pharmacological interventions in adolescents and young adults with type 1 diabetes: A systematic review and meta-analysis

BACKGROUND

Consistent diabetes control is crucial for patients with type 1 diabetes (T1D) to prevent diabetic complications. Analyzing the long-term effects of non-pharmacological interventions can improve diabetes management.

AIM

To examine the long-term effects of non-pharmacological interventions in adolescents and young adults with T1D through a systematic review and meta-analysis of randomized controlled trials (RCTs).

METHODS

The searches, without any year limitations, were conducted in seven databases. Two reviewers independently performed data extraction and risk of bias assessments. The meta-analysis was conducted using the RevMan 5.4 program and R Studio. The study was registered with PROSPERO (CRD42024503185).

RESULTS

A total of 40 studies were included in the systematic review, of which 28 were included in the meta-analysis. Notably, non-pharmacological interventions were effective in improving glycated hemoglobin (HbA1c) at 6 months and self-care at >12 months of follow-up. Subgroup analyses revealed that combined interventions encompassing self-care behavior management, education, and psychological interventions could enhance self-care. Additionally, a combination of face-to-face and telephonic communication was effective in improving HbA1c.

LINKING EVIDENCE TO ACTION

Non-pharmacological interventions are effective in improving HbA1c levels and self-care in adolescents and young adults undergoing long-term treatment. However, few studies have analyzed their effects on cardiovascular disease risk factors. Future studies should investigate the long-term effects of non-pharmacological interventions.

Adverse Social Determinants of Health in Children with Newly Diagnosed Type 1 Diabetes: A Potential Role for Community Health Workers

Objective

There are significant socioeconomic and racial disparities in glycemic control among children with type 1 diabetes (T1D). Community health workers (CHWs) have been shown to improve outcomes in marginalized, high-risk populations. The purpose of this qualitative study was to describe the prevalence and the impact of adverse social determinants of health (SDOH) on diabetes care soon after a diagnosis of pediatric T1D, and investigate the potential supportive role of a CHW. Research Design and Methods. Caregivers of youth <17-year old, with new onset T1D, and government insurance at the time of diagnosis were enrolled. Baseline demographic and SDOH questionnaires were administered at the time of enrollment. Semistructured interviews were performed at 3 months after diagnosis to explore the effect of SDOH on diabetes care and the impact of a CHW.

Results

Seventeen caregivers were enrolled, 10 were randomly assigned to a CHW. Two-thirds of caregivers identified at least one SDOH need at enrollment; 35% of caregivers identified two SDOH needs. Interviews revealed that the two major themes identified as barriers to diabetes care were caregivers' employment and financial issues. Social support was identified as a facilitator. The transition from hospital to home after the diagnosis of T1D was improved for families working with a CHW, and the CHW was identified as a strong source of support.

Conclusions

There is a high prevalence of adverse SDOH in families from lower socioeconomic status at the time of diagnosis of pediatric T1D. These SDOH have a significant impact on families' abilities to care for their children. Preliminary data suggest that CHWs can be a facilitator to the diabetes care. This trial is registered with NCT04238949.

[Diabetes mellitus in childhood and adolescence (Update 2023)]

In contrast to adults, type 1 diabetes mellitus (T1D) is the most frequent form of diabetes in childhood and adolescence (> 90%). After diagnosis the management of children and adolescents with T1D should take place in highly specialized pediatric units experienced in pediatric diabetology. The lifelong substitution of insulin is the cornerstone of treatment whereby modalities need to be individually adapted for patient age and the family routine. In this age group the usage of diabetes technology (glucose sensors, insulinpumps and recently hybrid-closed-loop-systems) is recommended. An optimal metabolic control right from the start of therapy is associated with an improved long-term prognosis. Diabetes education is essential in the management of patients with diabetes and their families and needs to be performed by a multidisciplinary team consisting of a pediatric diabetologists, diabetes educator, dietitian, psychologist and social worker. The Austrian working group for pediatric endocrinology and diabetes (APEDÖ) and the ISPAD (International Society for Pediatric and Adolescent Diabetes) recommend a metabolic goal of HbA1c ≤ 7.0%, ((IFCC) < 53 mmol/mol), and a "Time in range" > 70% for all pediatric age groups without the presence of severe hypoglycemia. Age-related physical, cognitive and psychosocial development, screening for associated diseases, avoidance of acute diabetes-related complications (severe hypoglycemia, diabetic ketoacidosis) and prevention of diabetes-related late complications to ensure high quality of life are the main goals of diabetes treatment in all pediatric age groups.

[Insulin pump therapy and continuous glucose monitoring]

This Guideline represents the recommendations of the Austrian Diabetes Association (ÖDG) on the use of diabetes technology (insulin pump therapy; continuous glucose monitoring, CGM; hybrid closed-loop systems, HCL; diabetes apps) and access to these technological innovations for people with diabetes mellitus based on current scientific evidence.

Improved Glycemic Control Observed in Children with Type 1 Diabetes Following the Introduction of Smart Insulin Pens: A Real-World Study

INTRODUCTION

Many challenges are associated with optimizing glycemic control in pediatric patients with type 1 diabetes (T1D); combining data from smart insulin pens and continuous glucose monitoring (CGM) could mitigate some of these obstacles.

METHODS

This one-arm, prospective, observational study investigated the effects of introducing a smart pen on glycemic control in pediatric patients with T1D who were using CGM. Children and adolescents with T1D who had been prescribed a smart pen for basal and/or bolus insulin injections were enrolled from three clinics in Sweden. Outcomes compared between baseline and follow-up (≥ 12 months) included: mean numbers of daily (over 24 h) and nocturnal hypoglycemic or hyperglycemic events; time above range (TAR; > 180 mg/dL); time below range (TBR; level 1: 54 to < 70 mg/dL; level 2: < 54 mg/dL); time in range (TIR; 70-180 mg/dL); and missed bolus-dose (MBD) meals.

RESULTS

Overall, 39 patients were included. Mean numbers of daily hypoglycemic events (- 31.4%; p = 0.00035) and nocturnal hypoglycemic events (- 24.4%; p = 0.043) were significantly reduced from baseline to follow-up. Mean daily TBR level 2 was reduced from 2.82% at baseline to 2.18% at follow-up (- 0.64 percentage points; p = 0.025). There were no statistically significant changes in number of daily hyperglycemic events, MBD meals, TIR, TAR, or TBR level 1.

CONCLUSIONS

Introducing smart insulin pens was associated with a reduced number of hypoglycemic events and decreases in TBR level 2, demonstrating a potential benefit for glycemic control in pediatric patients.

Continuous Glucose and Heart Rate Monitoring in Young People with Type 1 Diabetes: An Exploratory Study about Perspectives in Nocturnal Hypoglycemia Detection

A combination of information from blood glucose (BG) and heart rate (HR) measurements has been proposed to investigate the HR changes related to nocturnal hypoglycemia (NH) episodes in pediatric subjects with type 1 diabetes (T1D), examining whether they could improve hypoglycemia prediction. We enrolled seventeen children and adolescents with T1D, monitored on average for 194 days. BG was detected by flash glucose monitoring devices, and HR was measured by wrist-worn fitness trackers. For each subject, we compared HR values recorded in the hour before NH episodes (before-hypoglycemia) with HR values recorded during sleep intervals without hypoglycemia (no-hypoglycemia). Furthermore, we investigated the behavior after the end of NH. Nine participants (53%) experienced at least three NH. Among these nine subjects, six (67%) showed a statistically significant difference between the before-hypoglycemia HR distribution and the no-hypoglycemia HR distribution. In all these six cases, the before-hypoglycemia HR median value was higher than the no-hypoglycemia HR median value. In almost all cases, HR values after the end of hypoglycemia remained higher compared to no-hypoglycemia sleep intervals. This exploratory study support that HR modifications occur during NH in T1D subjects. The identification of specific HR patterns can be helpful to improve NH detection and prevent fatal events.

Effect of early glycemic control on HbA1c tracking and development of vascular complications after 5 years of childhood onset type 1 diabetes: Systematic review and meta-analysis

OBJECTIVE

A systematic review and meta-analysis was conducted to investigate if glycemic control measured by glycated hemoglobin (HbA1c) levels near diagnosis are predictive of future glycemic outcomes and vascular complications in childhood onset type 1 diabetes (T1D).

METHODS

Evidence was gathered using electronic databases (MEDLINE, EMBASE, Web of Science, CINAHL, Scopus, and Cochrane Library up to February 2017) and snowballing techniques. Studies investigating the association between the exposure "early glycemic control" and main outcome: "tracking of early control" and secondary outcome: risk of future complications; in children and young people aged 0 to 19 years at baseline; were systematically double-reviewed, quality assessed, and outcome data extracted for synthesis and meta-analysis.

FINDINGS

Five studies (N = 4227 participants) were eligible. HbA1c levels were sub-optimal throughout the study period but tended to stabilize in a "track" by 6 months after T1D diagnosis. The group with low HbA1c <53 mmol/mol (<7%) at baseline had lower long-term HbA1c levels than the higher HbA1c group. The estimated standardized mean difference between the sub groups showed a reduction of HbA1c levels on average by 1.6% (range -0.95% to -2.28%) from baseline. Only one study investigated the association between early glycemic control and development of vascular complications in childhood onset T1D.

INTERPRETATIONS

Glycemic control after the first few months of childhood onset T1D, remains stable but sub-optimal for a decade. The low and high HbA1c levels at baseline seem to "track" in their respective tracks during the 10-year follow-up, however, the initial difference between groups narrows over time.

PROSPERO

CRD42015024546 http://www.crd.york.ac.uk/PROSPERO/display_record.asp?ID=CRD42015024546.