Recent advances in closed-loop insulin delivery.

Since the discovery of insulin 100 years ago, we have seen considerable advances across diabetes therapies. The more recent advent of glucose-responsive automated insulin delivery has started to revolutionise the management of type 1 diabetes in children and adults. Evolution of closed-loop insulin delivery from research to clinical practice has been rapid, and multiple systems are now commercially available. In this review, we summarise key evidence on currently available closed-loop systems and those in development. We comment on dual-hormone and do-it-yourself systems, as well as reviewing clinical evidence in special populations such as very young children, older adults and in pregnancy. We identify future directions for research and barriers to closed-loop adoption, including how these might be addressed to ensure equitable access to this novel therapy.

'Smart' insulin-delivery technologies and intrinsic glucose-responsive insulin analogues.

Insulin replacement therapy for diabetes mellitus seeks to minimise excursions in blood glucose concentration above or below the therapeutic range (hyper- or hypoglycaemia). To mitigate acute and chronic risks of such excursions, glucose-responsive insulin-delivery technologies have long been sought for clinical application in type 1 and long-standing type 2 diabetes mellitus. Such 'smart' systems or insulin analogues seek to provide hormonal activity proportional to blood glucose levels without external monitoring. This review highlights three broad strategies to co-optimise mean glycaemic control and time in range: (1) coupling of continuous glucose monitoring (CGM) to delivery devices (algorithm-based 'closed-loop' systems); (2) glucose-responsive polymer encapsulation of insulin; and (3) mechanism-based hormone modifications. Innovations span control algorithms for CGM-based insulin-delivery systems, glucose-responsive polymer matrices, bio-inspired design based on insulin's conformational switch mechanism upon insulin receptor engagement, and glucose-responsive modifications of new insulin analogues. In each case, innovations in insulin chemistry and formulation may enhance clinical outcomes. Prospects are discussed for intrinsic glucose-responsive insulin analogues containing a reversible switch (regulating bioavailability or conformation) that can be activated by glucose at high concentrations.

DIY artificial pancreas: A narrative of the first patient and the physicians' experiences from India.

BACKGROUND AIMS: Frustrated with the slow-pace of innovations in diabetes technologies, the type 1 diabetes community have started closing the loop by themselves to automate insulin delivery. While the regulatory and ethical concerns over the systems are still high, these have contributed to enhanced glycemic control characterized by improved estimated HbA1c and time-in-range above 90% as for many users. Our objective is to provide the real-world experience of the first successful patient from India on the Do-It-Yourself Artificial Pancreas (DIYAP) and the perspective of her physicians. METHODS: A narrative recounting of a personal experience on DIYAP. The patient completed a Hypoglycemia Fear Survey II and Diabetes Quality of Life instrument before and after looping. RESULTS: The patient emphasized the personal/social benefits and the concerns of using the system. Looping has produced a clinically meaningful difference in the quality of life, better sleep patterns, and reduced the disease management burden. We also highlighted the relevant perspectives of the physicians to give deeper insights into the aspect. CONCLUSION: The patient highlighted better time-in-range, negligible time spent in hypoglycemia, and superior Quality of Life. Globally, more and more patients are adopting this technology; therefore, real-life patient stories will enlighten the medical community.

The promising future of insulin therapy in diabetes mellitus.

The first therapeutic use of insulin by Frederick Banting and Charles Best in 1921 revolutionized the management of type 1 diabetes and considerably changed the lives of many patients with other types of diabetes. In the past 100 years, significant pharmacological advances took place in the field of insulin therapy, bringing closer the goal of optimal glycemic control along with decreased diabetes-related complications. Despite these developments, several challenges remain, such as increasing treatment flexibility, reducing iatrogenic hypoglycemia, and optimizing patient quality of life. Ongoing innovations in insulin therapy (e.g., new insulin analogs, alternative routes of insulin administration, and closed-loop technology) endeavor to overcome these hurdles and change the landscape of diabetes mellitus management. This report highlights recent advances made in the field of insulin therapy and discusses future perspectives.

Transforming type 1 diabetes: the next wave of innovation.

The discovery of insulin in 1921 enabled pharmaceutical production of animal insulins for the treatment of people with type 1 diabetes by 1922. The last several decades have witnessed enormous scientific progress in the therapy of type 1 diabetes, yet some developments have been incremental, and insulin is not a cure. Herein, I highlight key scientific advances potentially poised to improve the quality of life and treatment outcomes in type 1 diabetes. These innovations range from newer insulin analogues to the development of smart insulins, oral and weekly insulins, glucose sensors and closed-loop insulin-delivery devices, as well as strategies for durable human beta cell replacement coupled with selective immune manipulation to preserve beta cell function. Finally, progress in the prediction and prevention of type 1 diabetes highlights the ongoing challenges and potential for altering the natural history of the disease or eliminating type 1 diabetes altogether.

The Reference Guide to Integrate Smart Insulin Pens Into Data-Driven Diabetes Care and Education Services.

PURPOSE: More than 7 million Americans who have diabetes use insulin therapy. The majority continue to use syringes and vials or traditional insulin pens to deliver their insulin doses. Using these tools to deliver insulin presents numerous challenges for both the person with diabetes and their clinicians. This article provides an in-depth introduction to a new category of insulin delivery devices and integrated management systems, referred to as smart insulin pens. The article includes information about how these integrated insulin delivery systems can reduce many of the challenges of rapid-acting insulin dosing via injection by enabling easier and more accurate dose recording, dose calculations, and sharing of diabetes management data with clinicians. This article also discusses new roles for diabetes care and education specialists in diabetes data-driven care and practice and addresses how smart insulin pens represent one of many newer digital diabetes management tools that can assist people with diabetes and their clinicians to optimally achieve and deliver quality, data-driven diabetes care. CONCLUSIONS: Newer and simplified insulin delivery devices with their integrated management systems, such as smart insulin pens, have the potential to minimize the challenges and complexities associated with insulin injection therapy while also providing people with diabetes and their clinicians more complete and integrated data in easily transmitted reports that support more efficient data analysis.

Modern diabetes devices in the school setting: Perspectives from school nurses.

OBJECTIVE: To explore the experiences, practices, and attitudes of school nurses related to modern diabetes devices (insulin pumps, continuous glucose monitors, and hybrid-closed loop systems). RESEARCH DESIGN AND METHODS: Semistructured interviews were conducted with 40 public school nurses caring for children in elementary and middle schools. Developed with stakeholder input, the interview questions explored experiences working with devices and communicating with the health care system. Deidentified transcripts were analyzed through an iterative process of coding to identify major themes. RESULTS: School nurses reported a range of educational backgrounds (58% undergraduate, 42% graduate), geographic settings (20% urban, 55% suburban, 25% rural), and years of experience (20% <5 years, 38%, 5-15 years, 42% >15 years). Four major themes emerged: (a) As devices become more common, school nurses must quickly develop new knowledge and skills yet have inconsistent training opportunities; (b) Enthusiasm for devices is tempered by concerns about implementation due to poor planning prior to the school year and potential disruptions by remote monitors; (c) Barriers exist to integrating devices into schools, including school/classroom policies, liability/privacy concerns, and variable staff engagement; and (d) Collaboration between school nurses and providers is limited; better communication may benefit children with diabetes. CONCLUSIONS: Devices are increasingly used by school-aged children. School nurses appreciate device potential but share structural and individual-level challenges. Guiding policy is needed as the technology progressively becomes standard of care. Enhanced training and collaboration with diabetes providers may help to optimize school-based management for children in the modern era.

Changing costs of type 1 diabetes care among US children and adolescents.

BACKGROUND: Modern therapy for type 1 diabetes (T1D) increasingly utilizes technology such as insulin pumps and continuous glucose monitors (CGMs). Prior analyses suggest that T1D costs are driven by preventable hospitalizations, but recent escalations in insulin prices and use of technology may have changed the cost landscape. METHODS: We conducted a retrospective analysis of T1D medical costs from 2012 to 2016 using the OptumLabs Data Warehouse, a comprehensive database of deidentified administrative claims for commercial insurance enrollees. Our study population included 9445 individuals aged ≤18 years with T1D and ≥13 months of continuous enrollment. Costs were categorized into ambulatory care, hospital care, insulin, diabetes technology, and diabetes supplies. Mean costs for each category in each year were adjusted for inflation, as well as patient-level covariates including age, sex, race, census region, and mental health comorbidity. RESULTS: Mean annual cost of T1D care increased from $11 178 in 2012 to $17 060 in 2016, driven primarily by growth in the cost of insulin ($3285 to $6255) and cost of diabetes technology ($1747 to $4581). CONCLUSIONS: Our findings suggest that the cost of T1D care is now driven by mounting insulin prices and growing utilization and cost of diabetes technology. Given the positive effects of pumps and CGMs on T1D health outcomes, it is possible that short-term costs are offset by future savings. Long-term cost-effectiveness analyses should be undertaken to inform providers, payers, and policy-makers about how to support optimal T1D care in an era of increasing reliance on therapeutic technology.

Psychosocial aspects of diabetes technology.

AIM: To identify key psychosocial research in the domain of diabetes technology. RESULTS: Four trajectories of psychosocial diabetes technology research are identified that characterize research over the past 25 years. Key evidence is reviewed on psychosocial outcomes of technology use as well as psychosocial barriers and facilitating conditions of diabetes technology uptake. Psychosocial interventions that address modifiable barriers and psychosocial factors have proven to be effective in improving glycaemic and self-reported outcomes in diabetes technology users. CONCLUSIONS: Psychosocial diabetes technology research is essential for designing interventions and education programmes targeting the person with diabetes to facilitate optimized outcomes associated with technology uptake. Psychosocial aspects of diabetes technology use and related research will be even more important in the future given the advent of systems for automated insulin delivery and the increasingly widespread digitalization of diabetes care.

Evolution of Diabetes Technology.

Technological innovations have fundamentally changed diabetes care. Insulin pump use and continuous glucose monitoring are associated with improved glycemic control along with a better quality of life; automated insulin-dosing advisors facilitate and improve decision making. Glucose-responsive automated insulin delivery enables the highest targets for time in range, lowest rate and duration of hypoglycemia, and favorable quality of life. Clear targets for time in ranges and a standard visualization of the data will help the diabetes technology to be used more efficiently. Decision support systems within and integrated cloud environment will further simplify, unify, and improve modern routine diabetes care.

Diabetes Technology and Exercise.

Advances in technologies such as glucose monitors, exercise wearables, closed-loop systems, and various smartphone applications are helping many people with diabetes to be more physically active. These technologies are designed to overcome the challenges associated with exercise duration, mode, relative intensity, and absolute intensity, all of which affect glucose homeostasis in people living with diabetes. At present, optimal use of these technologies depends largely on motivation, competence, and adherence to daily diabetes care requirements. This article discusses recent technologies designed to help patients with diabetes to be more physically active, while also trying to improve glucose control around exercise.

Automated Insulin Delivery in Children with Type 1 Diabetes.

The advent of insulin pump therapy marked an important milestone in diabetes treatment in the past few decades and has become the tipping point for the development of automated insulin delivery systems (AID). Standalone insulin pump systems have evolved over the course of years and have been replaced by modern high-technology insulin pumps with continuous glucose monitor interface allowing real-time insulin dose adjustment to optimize treatment. This review summarizes evidence from AID studies conducted in children with type 1 diabetes and discusses the outlook for future generation AID systems from a pediatric treatment perspective.

Automated Insulin Delivery in Adults.

Hybrid closed-loop (artificial pancreas) systems have recently been introduced into clinical practice for adults with type 1 diabetes. This reflects successful translation from research studies in highly supervised settings to evaluation of the technology in free-living home settings. We review the different closed-loop approaches and the key clinical evidence supporting adoption of hybrid closed-loop systems for adults with type 1 diabetes. We also discuss the growing evidence for automated insulin delivery in pregnant women and in hospitalized patients with hyperglycemia. We consider the psychosocial impact of closed-loop systems and the challenges and potential future advancements for automated insulin delivery.

Use of Diabetes Technology in Children: Role of Structured Education for Young People with Diabetes and Families.

The current era has witnessed an explosion of advanced diabetes technologies. Young people with diabetes and their families require detailed, structured diabetes education in order to optimize use of such devices. There is need for youth and their families to participate in the selection of particular devices for personal use and comprehensive education regarding the safe and effective use of such technologies. The education process should ensure that youth and their families receive realistic expectations of what the advanced technologies can and cannot do to avoid disappointment and the premature discontinuation of such systems.

Diabetes Technology Use in Adults with Type 1 and Type 2 Diabetes.

In the last 2 decades, diabetes technology has emerged as a branch of diabetes management thanks to the advent of continuous glucose monitoring (CGM) and increased availability of continuous subcutaneous insulin infusion systems, or insulin pumps. These tools have progressed from rudimentary instruments to sophisticated therapeutic options for advanced diabetes management. This article discusses the available CGM and insulin pump systems and the clinical benefits of their use in adults with type 1 diabetes, intensively insulin-treated type 2 diabetes, and pregnant patients with preexisting diabetes.

Do-It-Yourself Artificial Pancreas System and the OpenAPS Movement.

People with diabetes have been experimenting with and modifying their own diabetes devices and technologies for many decades in order to achieve the best possible quality of life and improving their long-term outcomes, including do-it-yourself (DIY) closed loop systems. Thousands of individuals use DIY closed loop systems globally, which work similarly to commercial systems by automatically adjusting and controlling insulin dosing, but are different in terms of transparency, access, customization, and usability. Initial outcomes seen by the DIY artificial pancreas system community are positive, and randomized controlled trials are forthcoming on various elements of DIYAPS technology.

Benefits and Challenges of Diabetes Technology Use in Older Adults.

With successful aging of adults with type 1 diabetes, there is an increased opportunity to use technology for diabetes management. Technology can ease the burden of self-care and provide a sense of security. However, age-related cognitive and physical decline can make technology use difficult. Guidelines using technology in the aging population are urgently needed, along with educational material for the clinicians and caregivers. In this article, we review the evidence supporting the use of diabetes-related technologies in the older population and discuss recommendations based on current data and the authors' clinical knowledge and experience.

Integration of Diabetes Technology in Clinical Practice.

This article attempts to aid clinicians in using diabetes devices in their clinical practice. It reviews device selection, initiation, and follow-up. It discusses work flow in an office and provides tips on billing. It stresses the need for patient choice, education, and on-going support through downloading and interpretation of data to optimize care.