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Artificial pancreas

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https://www.readbyqxmd.com/read/28533139/artificial-pancreas-research-you-can-observe-a-lot-by-watching
#1
Steven J Russell
No abstract text is available yet for this article.
May 19, 2017: Lancet Diabetes & Endocrinology
https://www.readbyqxmd.com/read/28533136/effect-of-artificial-pancreas-systems-on-glycaemic-control-in-patients-with-type-1-diabetes-a-systematic-review-and-meta-analysis-of-outpatient-randomised-controlled-trials
#2
Alanna Weisman, Johnny-Wei Bai, Marina Cardinez, Caroline K Kramer, Bruce A Perkins
BACKGROUND: Closed-loop artificial pancreas systems have been in development for several years, including assessment in numerous varied outpatient clinical trials. We aimed to summarise the efficacy and safety of artificial pancreas systems in outpatient settings and explore the clinical and technical factors that can affect their performance. METHODS: We did a systematic review and meta-analysis of randomised controlled trials comparing artificial pancreas systems (insulin only or insulin plus glucagon) with conventional pump therapy (continuous subcutaneous insulin infusion [CSII] with blinded continuous glucose monitoring [CGM] or unblinded sensor-augmented pump [SAP] therapy) in adults and children with type 1 diabetes...
May 19, 2017: Lancet Diabetes & Endocrinology
https://www.readbyqxmd.com/read/28532321/-210-polonium-bioaccessibility-assessment-in-algae-for-human-consumption-an-in-vitro-gastrointestinal-digestion-method
#3
Donatella Desideri, Maria Assunta Meli, Carla Roselli, Laura Feduzi, Lucia Ugolini
The occurrence and mobility of natural radioactive element as (210)Polonium ((210)Po) in 13 commercial algae consumed in Italy by humans were determined because the effects on human health need to take into account the bioavailability of these elements. The simulation of gastrointestinal (GIT) digestion was divided into three stages and was accomplished using three different artificial solutions: saliva, gastric, and synthetic bile-pancreas solution. The same sample was treated in two different ways: a) only gastric digestion and b) complete GIT digestion (gastric digestion followed by bile-pancreas solution)...
May 22, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28520531/artificial-pancreas-in-young-children
#4
Rebecca A Ohman-Hanson, Gregory P Forlenza
No abstract text is available yet for this article.
May 2017: Diabetes Technology & Therapeutics
https://www.readbyqxmd.com/read/28509784/pharmacotherapy-options-for-pediatric-diabetes
#5
Maria Loredana Marcovecchio, Francesco Chiarelli
PURPOSE OF REVIEW: Type 1 diabetes (T1D) and type 2 diabetes (T2D) are frequent conditions during childhood and adolescence. The present review offers an update on current available treatment strategies for T1D and T2D approved for use in children and adolescents. RECENT FINDINGS: Insulin remains the main and essential therapeutic strategy in youth with T1D. A second generation of insulin analogues is being evaluated and could help in improving glycemic control...
May 13, 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28503717/a-review-of-the-current-challenges-associated-with-the-development-of-an-artificial-pancreas-by-a-double-subcutaneous-approach
#6
REVIEW
Sverre Christian Christiansen, Anders Lyngvi Fougner, Øyvind Stavdahl, Konstanze Kölle, Reinold Ellingsen, Sven Magnus Carlsen
INTRODUCTION: Patients with diabetes type 1 (DM1) struggle daily to achieve good glucose control. The last decade has seen a rush of research groups working towards an artificial pancreas (AP) through the application of a double subcutaneous approach, i.e., subcutaneous (SC) continuous glucose monitoring (CGM) and continuous subcutaneous insulin infusion. Few have focused on the fundamental limitations of this approach, especially regarding outcome measures beyond time in range. METHODS: Based on insulin physiology, the limitations of CGM, SC insulin absorption, meal challenge, and physical activity in DM1 patients, we discuss the limitations of the double SC approach...
May 13, 2017: Diabetes Therapy: Research, Treatment and Education of Diabetes and related Disorders
https://www.readbyqxmd.com/read/28495545/asymptotic-tracking-and-disturbance-rejection-of-the-blood-glucose-regulation-system
#7
Brandon Ashley, Weijiu Liu
Type 1 diabetes patients need external insulin to maintain blood glucose within a narrow range from 65 to 108 mg/dl (3.6 to 6.0 mmol/l). A mathematical model for the blood glucose regulation is required for integrating a glucose monitoring system into insulin pump technology to form a closed-loop insulin delivery system on the feedback of the blood glucose, the so-called "artificial pancreas". The objective of this paper is to treat the exogenous glucose from food as a glucose disturbance and then develop a closed-loop feedback and feedforward control system for the blood glucose regulation system subject to the exogenous glucose disturbance...
May 8, 2017: Mathematical Biosciences
https://www.readbyqxmd.com/read/28474383/intraperitoneal-insulin-delivery-provides-superior-glycemic-regulation-to-subcutaneous-insulin-delivery-in-model-predictive-control-based-fully-automated-artificial-pancreas-in-patients-with-type-1-diabetes-a-pilot-study
#8
Eyal Dassau, Eric Renard, Jérôme Place, Anne Farret, Marie-José Pelletier, Justin Lee, Lauren M Huyett, Ankush Chakrabarty, Francis J Doyle, Howard C Zisser
AIMS: To compare intraperitoneal (IP) to subcutaneous (SC) insulin delivery in an artificial pancreas (AP). MATERIALS AND METHODS: Ten adults with type 1 diabetes participated in a non-randomized, non-blinded sequential AP study using the same SC glucose sensing and Zone Model Predictive Control (ZMPC) algorithm adjusted for insulin clearance. On first admission, subjects underwent closed-loop control with SC delivery of a fast-acting insulin analogue for 24 hr...
May 5, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28459617/outpatient-closed-loop-control-with-unannounced-moderate-exercise-in-adolescents-using-zone-model-predictive-control
#9
Lauren M Huyett, Trang T Ly, Gregory P Forlenza, Suzette Reuschel-DiVirgilio, Laurel H Messer, R Paul Wadwa, Ravi Gondhalekar, Francis J Doyle, Jordan E Pinsker, David M Maahs, Bruce A Buckingham, Eyal Dassau
BACKGROUND: The artificial pancreas (AP) has the potential to improve glycemic control in adolescents. This article presents the first evaluation in adolescents of the Zone Model Predictive Control and Health Monitoring System (ZMPC+HMS) AP algorithms, and their first evaluation in a supervised outpatient setting with frequent exercise. MATERIALS AND METHODS: Adolescents with type 1 diabetes underwent 3 days of closed-loop control (CLC) in a hotel setting with the ZMPC+HMS algorithms on the Diabetes Assistant platform...
May 1, 2017: Diabetes Technology & Therapeutics
https://www.readbyqxmd.com/read/28439847/the-role-of-the-fda-and-regulatory-approval-of-new-devices-for-diabetes-care
#10
REVIEW
Shelley A Jazowski, Aaron N Winn
PURPOSE OF REVIEW: The Food and Drug Administration (FDA) is responsible for assuring the safety, effectiveness, and quality of medical devices in the USA. Extensive review times coupled with the demand for necessary treatments have prompted the policymakers to implement measures to speed medical devices to market.The purpose of this review is to summarize the evolution of the regulatory pathways through which medical devices utilized in diabetes care gain market access. RECENT FINDINGS: Regulatory pathways, ranging from premarket notification to premarket approval, require distinct, yet necessary ("least burdensome") evidence demonstrating a device's safety and effectiveness...
June 2017: Current Diabetes Reports
https://www.readbyqxmd.com/read/28427321/in-silico-assessment-of-biomedical-products-the-conundrum-of-rare-but-not-so-rare-events-in-two-case-studies
#11
Marco Viceconti, Claudio Cobelli, Tarek Haddad, Adam Himes, Boris Kovatchev, Mark Palmer
In silico clinical trials, defined as "The use of individualized computer simulation in the development or regulatory evaluation of a medicinal product, medical device, or medical intervention," have been proposed as a possible strategy to reduce the regulatory costs of innovation and the time to market for biomedical products. We review some of the the literature on this topic, focusing in particular on those applications where the current practice is recognized as inadequate, as for example, the detection of unexpected severe adverse events too rare to be detected in a clinical trial, but still likely enough to be of concern...
May 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28426239/performance-of-an-artificial-pancreas-system-for-young-children-with-type-1-diabetes
#12
Mark D DeBoer, Marc D Breton, Christian Wakeman, Elaine M Schertz, Emma G Emory, Jessica L Robic, Laura L Kollar, Boris P Kovatchev, Daniel R Cherñavvsky
BACKGROUND: Young children 5-8 years old with type 1 diabetes (T1D) exhibit clear needs for improved glycemic control but may be limited in their ability to safely interact with an artificial pancreas system. Our goal was to evaluate the safety and performance of an artificial pancreas (AP) system among young children with T1D. RESEARCH DESIGN AND METHODS: In a randomized, crossover trial, children with T1D age 5-8 years were enrolled to receive on separate study periods (in random order) either the UVa AP using the DiAs Control Platform software with child-resistant lock-out screens (followed as an out-patient admission) or their usual insulin pump+continuous glucose monitor (CGM) care at home...
May 2017: Diabetes Technology & Therapeutics
https://www.readbyqxmd.com/read/28418732/insulin-infusion-sets-and-continuous-glucose-monitoring-sensors-where-the-artificial-pancreas-meets-the-patient
#13
Gregory P Forlenza
No abstract text is available yet for this article.
April 2017: Diabetes Technology & Therapeutics
https://www.readbyqxmd.com/read/28388308/identification-of-type-iii-interferon-ifn-%C3%AE-in-chinese-goose-gene-structure-age-dependent-expression-profile-and-antiviral-immune-characteristics-in-vivo-and-in-vitro
#14
Qin Zhou, Wei Zhang, Shun Chen, Anqi Wang, Lipei Sun, Mingshu Wang, Renyong Jia, Dekang Zhu, Mafeng Liu, Kunfeng Sun, Qiao Yang, Ying Wu, Xiaoyue Chen, Anchun Cheng
Type III interferons (IFN-λ1/λ2/λ3, also known as IL-29/28A/28B, and IFN-λ4) are a recently discovered interferon group. In this study, we first identified the Chinese goose IFN-λ (goIFN-λ). The full-length sequence of goIFN-λ was found to be 823 bp. There was only one open reading frame that contained 570 bp, and, encoded 189 amino acids. The predicted goIFN-λ protein showed 78%, 67%, and 40% amino acid identity with duIFN-λ, chIFN-λ, and hIFN-λ3, respectively. The tissue distribution of goIFN-λ existed as a parallel distribution with goIFNLR1 as its functional receptor, which was mainly expressed in epithelium-rich tissues, such as lung, gizzard, proventriculus, skin and pancreas, and immune tissues, such as harderian gland and thymus...
April 7, 2017: Journal of Interferon & Cytokine Research
https://www.readbyqxmd.com/read/28366258/-the-artificial-pancreas-a-dream-on-the-point-of-becoming-reality
#15
REVIEW
Éric Renard, Jérôme Place, Najib Benbrahim, Omar Diouri, Anne Farret
Almost 45 000 patients with type 1 diabetes are concerned in France by outpatient insulin pump therapy. The first systems of insulin pump therapy guided by glycaemia have evolved driven by the work carried out by multi-disciplinary research teams. Today, the outpatient treatment of type 1 diabetes by an artificial pancreas is on the point of becoming reality.
April 2017: Revue de L'infirmière
https://www.readbyqxmd.com/read/28361610/an-industry-update-the-latest-developments-in-therapeutic-delivery
#16
Oliver C Steinbach
The present industry update covers the period 1-31 January 2017, with information sourced from company press releases, regulatory and patent agencies as well as the scientific literature. With a new year come new resolutions, annual operation plans but also reports and outlooks for the years(s) to come. A number of the latter have been published in January forecasting various spaces in drug delivery (Market and Research). Also a number of financing deals were closed being fresh into the year such as Ossianix and Ocular Therapeutix and contract manufacturers will show their offerings at the 2017 MD&M West Medtech event (Lubrizol, Trelleborg)...
March 2017: Therapeutic Delivery
https://www.readbyqxmd.com/read/28349709/meeting-report
#17
Barry H Ginsberg, David C Klonoff, Vincent P Crabtree
On July 6 and 7, 2016 the Fourth Artificial Pancreas Workshop: Testing and Adoption of Current and Emerging Technologies was held on the National Institutes of Health (NIH) Campus at the Lister Hill Auditorium. The meeting was sponsored by a group of governmental organizations and NGOs, listed in Appendix A. This was a very timely meeting as the artificial pancreas appears to be growing from academic studies to commercial projects. The first artificial pancreas may be marketed within 12 months and a few may be approved within 24 months...
March 1, 2017: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/28340542/expectations-and-attitudes-of-individuals-with-type-1-diabetes-after-using-a-hybrid-closed-loop-system
#18
Esti Iturralde, Molly L Tanenbaum, Sarah J Hanes, Sakinah C Suttiratana, Jodie M Ambrosino, Trang T Ly, David M Maahs, Diana Naranjo, Natalie Walders-Abramson, Stuart A Weinzimer, Bruce A Buckingham, Korey K Hood
Purpose The first hybrid closed loop (HCL) system, which automates insulin delivery but requires user inputs, was approved for treatment of type 1 diabetes (T1D) by the US Food and Drug Administration in September 2016. The purpose of this study was to explore the benefits, expectations, and attitudes of individuals with T1D following a clinical trial of an HCL system. Methods Thirty-two individuals with T1D (17 adults, 15 adolescents) participated in focus groups after 4 to 5 days of system use. Content analysis generated themes regarding perceived benefits, hassles, and limitations...
April 2017: Diabetes Educator
https://www.readbyqxmd.com/read/28324962/design-of-a-dual-hormone-model-predictive-control-for-artificial-pancreas-with-exercise-model
#19
Navid Resalat, Joseph El Youssef, Ravi Reddy, Peter G Jacobs
The Artificial Pancreas (AP) is a new technology for helping people with type 1 diabetes to better control their glucose levels through automated delivery of insulin and optionally glucagon in response to sensed glucose levels. In a dual hormone AP, insulin and glucagon are delivered automatically to the body based on glucose sensor measurements using a control algorithm that calculates the amount of hormones to be infused. A dual-hormone MPC may deliver insulin continuously; however, it must avoid continuous delivery of glucagon because nausea can occur from too much glucagon...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28316225/-the-clinical-impact-of-artery-first-approach-combined-with-vascular-resection-and-reconstruction-in-the-treatment-of-pancreatic-head-carcinoma
#20
J L Huang, W G Li, F Z Chen, Z J Su, F M Li, B Liu
Objective: To evaluate the application of artery first, combined vascular resection and reconstruction in the treatment of pancreatic head carcinoma. Methods: The clinical data of 13 patients with pancreatic head cancer were retrospectively analyzed from February 2014 to March 2016 in the Affiliated Hospital of Xiamen University. Preoperative computed tomography of high resolution layer or magnetic resonance imaging examination demonstrated pancreatic head carcinoma, as well as close adhesion, stenosis, compression or displacement of superior mesenteric vein or portal vein wall...
March 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
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