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Bian C, He X, Wang Q, Zheng Z, Zhang Y, Xiong H, Li Y, Zhao M, Li J. Biochemical Toxicological Study of Insulin Overdose in Rats: A Forensic Perspective. TOXICS 2023; 12:17. [PMID: 38250973 PMCID: PMC10819875 DOI: 10.3390/toxics12010017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 12/17/2023] [Accepted: 12/22/2023] [Indexed: 01/23/2024]
Abstract
Due to nonspecific pathological changes and the rapid degradation of insulin in postmortem blood samples, the identification of the cause of death during insulin overdose has always been a difficulty in forensic medicine. At present, there is a lack of studies on the toxicological changes and related mechanisms of an insulin overdose, and the specific molecular markers of insulin overdose are still unclear. In this study, an animal model of insulin overdose was established, and 24 SD rats were randomly divided into a control group, insulin overdose group, and a recovery group (n = 8). We detected the biochemical changes and analyzed the toxicological mechanism of an insulin overdose. The results showed that after insulin overdose, the rats developed irregular convulsions, Eclampsia, Opisthotonos, and other symptoms. The levels of glucose, glycogen, and C-peptide in the body decreased significantly, while the levels of lactate, insulin, and glucagon increased significantly. The decrease in plasma K+ was accompanied by the increase in skeletal muscle K+. The PI3K-AKT signaling pathway was significantly activated in skeletal muscle, and the translocation of GLUT4/Na+-K+-ATPase to sarcolemma was significantly increased. Rare glycogenic hepatopathy occurred in the recovery group after insulin overdose. Our study showed that insulin overdose also plays a role in skeletal muscle cells, mainly through the PI3K-Akt signaling pathway. Therefore, the detection of signaling pathway proteins of the skeletal muscle cell membrane GLUT4 and Na+-K+-ATPase has a certain auxiliary diagnostic value for forensic insulin overdose identification. Glycogen detection in the liver and skeletal muscle is important for the diagnosis of insulin overdose, but it still needs to be differentiated from other causes of death. Skeletal muscle has great potential for insulin detection, and the ratio of insulin to the C-peptide (I:C) can determine whether an exogenous insulin overdose is present.
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Affiliation(s)
- Cunhao Bian
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China; (C.B.); (X.H.); (Q.W.); (Z.Z.); (Y.Z.); (H.X.); (Y.L.); (M.Z.)
- Chongqing Engineering Research Center of Criminal Investigation Technology, Chongqing 400016, China
- Chongqing Key Laboratory of Forensic Medicine, Chongqing 400016, China
| | - Xin He
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China; (C.B.); (X.H.); (Q.W.); (Z.Z.); (Y.Z.); (H.X.); (Y.L.); (M.Z.)
- Chongqing Engineering Research Center of Criminal Investigation Technology, Chongqing 400016, China
- Chongqing Key Laboratory of Forensic Medicine, Chongqing 400016, China
| | - Qi Wang
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China; (C.B.); (X.H.); (Q.W.); (Z.Z.); (Y.Z.); (H.X.); (Y.L.); (M.Z.)
- Chongqing Engineering Research Center of Criminal Investigation Technology, Chongqing 400016, China
- Chongqing Key Laboratory of Forensic Medicine, Chongqing 400016, China
| | - Zhe Zheng
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China; (C.B.); (X.H.); (Q.W.); (Z.Z.); (Y.Z.); (H.X.); (Y.L.); (M.Z.)
- Chongqing Engineering Research Center of Criminal Investigation Technology, Chongqing 400016, China
- Chongqing Key Laboratory of Forensic Medicine, Chongqing 400016, China
| | - Yongtai Zhang
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China; (C.B.); (X.H.); (Q.W.); (Z.Z.); (Y.Z.); (H.X.); (Y.L.); (M.Z.)
- Chongqing Engineering Research Center of Criminal Investigation Technology, Chongqing 400016, China
- Chongqing Key Laboratory of Forensic Medicine, Chongqing 400016, China
| | - Hongli Xiong
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China; (C.B.); (X.H.); (Q.W.); (Z.Z.); (Y.Z.); (H.X.); (Y.L.); (M.Z.)
- Chongqing Engineering Research Center of Criminal Investigation Technology, Chongqing 400016, China
- Chongqing Key Laboratory of Forensic Medicine, Chongqing 400016, China
| | - Yongguo Li
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China; (C.B.); (X.H.); (Q.W.); (Z.Z.); (Y.Z.); (H.X.); (Y.L.); (M.Z.)
- Chongqing Engineering Research Center of Criminal Investigation Technology, Chongqing 400016, China
- Chongqing Key Laboratory of Forensic Medicine, Chongqing 400016, China
| | - Mingzhu Zhao
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China; (C.B.); (X.H.); (Q.W.); (Z.Z.); (Y.Z.); (H.X.); (Y.L.); (M.Z.)
- Chongqing Engineering Research Center of Criminal Investigation Technology, Chongqing 400016, China
- Chongqing Key Laboratory of Forensic Medicine, Chongqing 400016, China
| | - Jianbo Li
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China; (C.B.); (X.H.); (Q.W.); (Z.Z.); (Y.Z.); (H.X.); (Y.L.); (M.Z.)
- Chongqing Engineering Research Center of Criminal Investigation Technology, Chongqing 400016, China
- Chongqing Key Laboratory of Forensic Medicine, Chongqing 400016, China
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2
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Pissarnitski DA, Kekec A, Yan L, Zhu Y, Feng DD, Huo P, Madsen-Duggan C, Moyes CR, Nargund RP, Kelly T, Zhang X, Carballo-Jane E, Gorski J, Zafian P, Qatanani M, Kaarsholm N, Meng F, Jia X, Lee KJ, Wang W, Xu S, Hohn MJ, Iammarino MJ, McCoy MA, Okoh GA, Liang Y, Hollingsworth SA, Erion MD, Kelley DE, Garbaccio RM, Zhang A, Mu J, Lin S. Discovery of Insulin Receptor Partial Agonists MK-5160 and MK-1092 as Novel Basal Insulins with Potential to Improve Therapeutic Index. J Med Chem 2022; 65:5593-5605. [PMID: 35298158 DOI: 10.1021/acs.jmedchem.1c02073] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We have identified a series of novel insulin receptor partial agonists (IRPAs) with a potential to mitigate the risk of hypoglycemia associated with the use of insulin as an antidiabetic treatment. These molecules were designed as dimers of native insulin connected via chemical linkers of variable lengths with optional capping groups at the N-terminals of insulin chains. Depending on the structure, the maximal activation level (%Max) varied in the range of ∼20-70% of native insulin, and EC50 values remained in sub-nM range. Studies in minipig and dog demonstrated that IRPAs had sufficient efficacy to normalize plasma glucose levels in diabetes, while providing reduction of hypoglycemia risk. IRPAs had a prolonged duration of action, potentially making them suitable for once-daily dosing. Two lead compounds with %Max values of 30 and 40% relative to native insulin were selected for follow up studies in the clinic.
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Affiliation(s)
| | - Ahmet Kekec
- Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
| | - Lin Yan
- Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
| | - Yuping Zhu
- Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
| | - Danqing D Feng
- Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
| | - Pei Huo
- Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
| | | | | | - Ravi P Nargund
- Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
| | - Terri Kelly
- Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
| | - Xiaoping Zhang
- Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
| | | | - Judith Gorski
- Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
| | - Peter Zafian
- Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | - Mo Qatanani
- Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
| | - Niels Kaarsholm
- Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
| | - Fanyu Meng
- Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Xiujuan Jia
- Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Keun-Joong Lee
- Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Weixun Wang
- Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Sherrie Xu
- Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
| | - Michael J Hohn
- Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
| | | | - Mark A McCoy
- Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
| | - Grace A Okoh
- Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Yingkai Liang
- Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | | | - Mark D Erion
- Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
| | - David E Kelley
- Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
| | | | - Amy Zhang
- Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
| | - James Mu
- Merck & Co., Inc., South San Francisco, California 94080, United States
| | - Songnian Lin
- Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
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3
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Ahola AJ, Harjutsalo V, Thomas MC, Forsblom C, Groop PH. Dietary intake and hospitalisation due to diabetic ketoacidosis and hypoglycaemia in individuals with type 1 diabetes. Sci Rep 2021; 11:1638. [PMID: 33452386 PMCID: PMC7810746 DOI: 10.1038/s41598-021-81180-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 12/16/2020] [Indexed: 11/09/2022] Open
Abstract
We investigated the association between diet and risk of hospitalisation for diabetic ketoacidosis (DKA) or hypoglycaemia in type 1 diabetes. Food records were used to assess dietary intake. Data on DKA and hypoglycaemia hospitalisations, within two years of dietary assessments, were obtained from registries. Analyses were conducted with and without macronutrient substitution. Data were available from 1391 participants, 28 (2.0%) and 55 (4.0%) of whom were hospitalised due to DKA or hypoglycaemia, respectively. In the adjusted model, self-reported alcohol intake was associated with increased (per 10 g: B = 1.463, 95% CI = 1.114-1.922, p = 0.006; per E%: B = 1.113, 95% CI = 1.027-1.206, p = 0.009), and fibre intake with reduced (per g/MJ: B = 0.934, 95% CI = 0.878-0.995, p = 0.034) risk of DKA hospitalisation. Substituting carbohydrates for fats was associated with increased risk for hypoglycaemia hospitalisation (B = 1.361, 95% CI = 1.031-1.795, p = 0.029), while substituting alcohol for carbohydrates (B = 1.644, 95% CI = 1.006-2.685, p = 0.047) or proteins (B = 2.278, 95% CI = 1.038-4.999, p = 0.040) increased the risk for DKA hospitalisation. In conclusion, refraining from alcohol intake is a preventable risk factor for DKA, while higher fibre intake seems rather protective. Increasing carbohydrate intake while decreasing that of fats, is associated with higher hypoglycaemia risk. Whether this is a cause or effect of hypoglycaemia remains to be established.
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Affiliation(s)
- Aila J Ahola
- Folkhälsan Institute of Genetics, Folkhälsan Research Center, Helsinki, Finland.,Abdominal Center, Nephrology, Helsinki University Hospital, University of Helsinki, Helsinki, Finland.,Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Valma Harjutsalo
- Folkhälsan Institute of Genetics, Folkhälsan Research Center, Helsinki, Finland.,Abdominal Center, Nephrology, Helsinki University Hospital, University of Helsinki, Helsinki, Finland.,Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland.,National Institute for Health and Welfare, Helsinki, Finland
| | - Merlin C Thomas
- Department of Diabetes, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Carol Forsblom
- Folkhälsan Institute of Genetics, Folkhälsan Research Center, Helsinki, Finland.,Abdominal Center, Nephrology, Helsinki University Hospital, University of Helsinki, Helsinki, Finland.,Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Per-Henrik Groop
- Folkhälsan Institute of Genetics, Folkhälsan Research Center, Helsinki, Finland. .,Abdominal Center, Nephrology, Helsinki University Hospital, University of Helsinki, Helsinki, Finland. .,Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland. .,Department of Diabetes, Central Clinical School, Monash University, Melbourne, VIC, Australia.
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4
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Farrell CM, McCrimmon RJ. Clinical approaches to treat impaired awareness of hypoglycaemia. Ther Adv Endocrinol Metab 2021; 12:20420188211000248. [PMID: 33796253 PMCID: PMC7968015 DOI: 10.1177/20420188211000248] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 02/12/2021] [Indexed: 01/25/2023] Open
Abstract
Impaired awareness of hypoglycaemia (IAH) affects between 25% and 30% of all people with type 1 diabetes (T1D) and markedly increases risk of severe hypoglycaemia. This greatly feared complication of T1D impairs quality of life and has a recognised morbidity. People with T1D have an increased propensity to hypoglycaemia as a result of fundamental physiological defects in their ability to respond appropriately to a fall in blood glucose levels. With repeated exposure to low glucose, many then develop a condition referred to as IAH, where there is a reduced ability to perceive the onset of hypoglycaemia and take appropriate corrective action. The management of individuals with IAH relies initially on its identification in the clinic through a detailed exploration of the frequency of hypoglycaemia and an assessment of the individual's ability to recognise these episodes. In this review article, we will address the clinical strategies that may help in the management of the patient with IAH once identified, who may or may not also suffer from problematic hypoglycaemia. The initial focus is on how to identify such patients and then on the variety of approaches involving educational programmes and technological approaches that may be taken to minimise hypoglycaemia risk. No single approach can be advocated for all patients, and it is the role of the health care professional to identify the clinical strategy that best enables their patient to achieve this goal.
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Affiliation(s)
- Catriona M. Farrell
- Division of Systems Medicine, School of Medicine, University of Dundee, Dundee, UK
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5
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Jensen MH, Hejlesen O, Vestergaard P. Association of insulin regimens with severe hypoglycaemia in patients with type 1 diabetes: A Danish case-control study. Br J Clin Pharmacol 2020; 86:1560-1566. [PMID: 32086824 PMCID: PMC8176963 DOI: 10.1111/bcp.14263] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 10/24/2019] [Accepted: 02/14/2020] [Indexed: 12/28/2022] Open
Abstract
AIMS To evaluate the risk of severe hypoglycaemia for patients with Type 1 diabetes (T1D) when exposed to insulin regimens including human insulin only or insulin analogues. METHODS A total of 19 896 patients with T1D were extracted from the Danish National Patient Register. Of these, 6379 T1D patients experiencing 1 of more severe hypoglycaemic episodes (total of 17 242 episodes) were matched 1:1 with T1D patients without severe hypoglycaemia. A logistic regression model with last insulin regimen used as exposure was constructed to analyse the effect on severe hypoglycaemia. RESULTS People on a basal-bolus regimen with insulin analogues had a reduced risk of severe hypoglycaemia of 39% (odds ratio: 0.61, 95% confidence interval: 0.54-0.68) compared to patients on a basal-bolus human insulin only regimen. Furthermore, patients on a premixed regimen containing an insulin analogue had a 58% (odds ratio: 0.42, 95% confidence interval: 0.36-0.49) reduced risk of severe hypoglycaemia compared to patients on premixed human insulin only. CONCLUSION This study indicates that use of a basal-bolus insulin regimen with an insulin analogue is safer with respect to severe hypoglycaemia in patients with T1D than the use of a basal-bolus human insulin only regimen.
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Affiliation(s)
- Morten Hasselstrøm Jensen
- Steno Diabetes Center North DenmarkAalborg University HospitalAalborgDenmark
- Department of Health Science and TechnologyAalborg UniversityAalborgDenmark
| | - Ole Hejlesen
- Department of Health Science and TechnologyAalborg UniversityAalborgDenmark
| | - Peter Vestergaard
- Steno Diabetes Center North DenmarkAalborg University HospitalAalborgDenmark
- Department of Clinical MedicineAalborg University HospitalAalborgDenmark
- Department of EndocrinologyAalborg University HospitalAalborgDenmark
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6
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Farrell CM, McNeilly AD, Fournier P, Jones T, Hapca SM, West D, McCrimmon RJ. A randomised controlled study of high intensity exercise as a dishabituating stimulus to improve hypoglycaemia awareness in people with type 1 diabetes: a proof-of-concept study. Diabetologia 2020; 63:853-863. [PMID: 31942669 PMCID: PMC7054230 DOI: 10.1007/s00125-019-05076-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 11/25/2019] [Indexed: 01/08/2023]
Abstract
AIMS/HYPOTHESIS Approximately 25% of people with type 1 diabetes have suppressed counterregulatory hormonal and symptomatic responses to insulin-induced hypoglycaemia, which renders them at increased risk of severe, disabling hypoglycaemia. This is called impaired awareness of hypoglycaemia (IAH), the cause of which is unknown. We recently proposed that IAH develops through habituation, a form of adaptive memory to preceding hypoglycaemia. Consistent with this hypothesis, we demonstrated restoration of defective counterregulatory hormonal responses to hypoglycaemia (referred to as dishabituation) in a rodent model of IAH following introduction of a novel stress stimulus (high intensity training [HIT]). In this proof-of-concept study we sought to further test this hypothesis by examining whether a single episode of HIT would amplify counterregulatory responses to subsequent hypoglycaemia in people with type 1 diabetes who had IAH (assessed by Gold score ≥4, modified Clarke score ≥4 or Dose Adjustment For Normal Eating (DAFNE) hypoglycaemia awareness rating 2 or 3). The primary outcome was the difference in adrenaline response to hypoglycaemia following both a single episode of HIT and rest. METHODS In this randomised, crossover study 12 participants aged between 18 and 55 years with type 1 diabetes for ≥5 years and an HbA1c <75 mmol/mol (9%) were recruited. Individuals were randomised using computer generated block randomisation to start with one episode of HIT (4 × 30 s cycle sprints [2 min recovery] at 150% of maximum wattage achieved during [Formula: see text] assessment) or rest (control). The following day they underwent a 90 min hyperinsulinaemic-hypoglycaemic clamp study at 2.5 mmol/l with measurement of hormonal counterregulatory response, symptom scores and cognitive testing (four-choice reaction time and digit symbol substitution test). Each intervention and subsequent clamp study was separated by at least 2 weeks. The participants and investigators were not blinded to the intervention or measurements during the study. The investigators were blinded to the primary outcome and blood analysis results. RESULTS All participants (six male and six female, age 19-54 years, median [IQR] duration of type 1 diabetes 24.5 [17.3-29.0] years, mean [SEM] HbA1c 56 [3.67] mmol/mol; 7.3% [0.34%]) completed the study (both interventions and two clamps). In comparison with the rest study, a single episode of HIT led to a 29% increase in the adrenaline (epinephrine) response (mean [SEM]) (2286.5 [343.1] vs 2953.8 [384.9] pmol/l); a significant increase in total symptom scores (Edinburgh Hypoglycaemia Symptom Scale: 24.25 [2.960 vs 27.5 [3.9]; p<0.05), and a significant prolongation of four-choice reaction time (591.8 [22.5] vs 659.9 [39.86] ms; p<0.01] during equivalent hypoglycaemia induced the following day. CONCLUSIONS/INTERPRETATION These findings are consistent with the hypothesis that IAH develops in people with type 1 diabetes as a habituated response and that introduction of a novel stressor can restore, at least partially, the adapted counterregulatory hormonal, symptomatic and cognitive responses to hypoglycaemia. TRIAL REGISTRATION ISRCTN15236211.
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Affiliation(s)
- Catriona M Farrell
- Division of Systems Medicine, School of Medicine, University of Dundee, Dundee, DD19SY, UK
| | - Alison D McNeilly
- Division of Systems Medicine, School of Medicine, University of Dundee, Dundee, DD19SY, UK
| | - Paul Fournier
- Faculty of Science, School of Human Science, The University of Western Australia, Perth, Australia
| | - Timothy Jones
- Faculty of Health and Medical Sciences, Paediatrics, The University of Western Australia, Perth, Australia
| | - Simona M Hapca
- Computing Science and Mathematics, Faculty of Natural Sciences, University of Stirling, Stirling, UK
| | - Daniel West
- Institute of Cellular Medicine, Faculty of Medical Science, Newcastle University, Newcastle, UK
| | - Rory J McCrimmon
- Division of Systems Medicine, School of Medicine, University of Dundee, Dundee, DD19SY, UK.
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7
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Hendrieckx C, Gonder-Frederick L, Heller SR, Snoek FJ, Speight J. How has psycho-behavioural research advanced our understanding of hypoglycaemia in type 1 diabetes? Diabet Med 2020; 37:409-417. [PMID: 31814151 DOI: 10.1111/dme.14205] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/04/2019] [Indexed: 11/29/2022]
Abstract
Almost 100 years since the discovery of insulin, hypoglycaemia remains a barrier for people with type 1 diabetes to achieve and maintain blood glucose at levels which prevent long-term diabetes-related complications. Although hypoglycaemia is primarily attributable to the limitations of current treatment and defective hormonal counter-regulation in type 1 diabetes, the central role of psycho-behavioural factors in preventing, recognizing and treating hypoglycaemia has been acknowledged since the early 1980s. Over the past 25 years, as documented in the present review, there has been a substantial increase in psycho-behavioural research focused on understanding the experience and impact of hypoglycaemia. The significant contributions have been in understanding the impact of hypoglycaemia on a person's emotional well-being and aspects of life (e.g. sleep, driving, work/social life), identifying modifiable psychological and behavioural risk factors, as well as in developing psycho-behavioural interventions to prevent and better manage (severe) hypoglycaemia. The impact of hypoglycaemia on family members has also been confirmed. Structured diabetes education programmes and psycho-behavioural interventions with a focus on hypoglycaemia have both been shown to be effective in addressing problematic hypoglycaemia. However, the findings have also revealed the complexity of the problem and the need for a personalized approach, taking into account the individual's knowledge of, and emotional/behavioural reactions to hypoglycaemia. Evidence is emerging that people with persistent and recurrent severe hypoglycaemia, characterized by deeply entrenched cognitions and lack of concern around hypoglycaemia, can benefit from tailored cognitive behavioural therapy.
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Affiliation(s)
- C Hendrieckx
- School of Psychology, Deakin University, Geelong, Victoria, Australia
- The Australian Centre for Behavioural Research in Diabetes, Melbourne, Victoria, Australia
| | - L Gonder-Frederick
- Centre for Diabetes Technology, Department of Psychiatry and Neurobehavioural Sciences, University of Virginia, Charlottesville, VA, USA
| | - S R Heller
- Department of Oncology and Metabolism, University of Sheffield, Sheffield, UK
| | - F J Snoek
- Department of Medical Psychology, Amsterdam University Medical Centres, Vrije Universiteit Amsterdam, The Netherlands
| | - J Speight
- School of Psychology, Deakin University, Geelong, Victoria, Australia
- The Australian Centre for Behavioural Research in Diabetes, Melbourne, Victoria, Australia
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8
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Agesen RM, Alibegovic AC, Andersen HU, Beck-Nielsen H, Gustenhoff P, Hansen TK, Hedetoft C, Jensen T, Juhl CB, Lerche SS, Nørgaard K, Parving HH, Tarnow L, Thorsteinsson B, Pedersen-Bjergaard U. The effect of insulin degludec on risk of symptomatic nocturnal hypoglycaemia in adults with type 1 diabetes and high risk of nocturnal severe hypoglycaemia (the HypoDeg trial): study rationale and design. BMC Endocr Disord 2019; 19:78. [PMID: 31337371 PMCID: PMC6652000 DOI: 10.1186/s12902-019-0408-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 07/15/2019] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Hypoglycaemia, especially nocturnal, remains the main limiting factor of achieving good glycaemic control in type 1 diabetes. The effect of first generation long-acting insulin analogues in reducing nocturnal hypoglycaemia is well documented in patient with type 1 diabetes. The effect of the newer long-acting insulin degludec on risk of nocturnal hypoglycaemia remains undocumented in patients with type 1 diabetes and recurrent severe nocturnal hypoglycaemia. The HypoDeg trial is designed to investigate whether insulin degludec in comparison with insulin glargine U100 is superior in limiting the occurrence of nocturnal hypoglycaemia in patients with recurrent nocturnal severe hypoglycaemia. This paper reports the study design of the HypoDeg trial. METHODS/DESIGN A Danish investigator-initiated, prospective, randomised, open, blinded endpoint (PROBE), multicentre, two-year cross-over study investigating the effect of insulin degludec versus insulin glargine U100 on frequency of nocturnal hypoglycaemia in patients with type 1 diabetes and one or more episodes of nocturnal severe hypoglycaemia during the preceding two years as the major inclusion criteria. Patients are randomised (1:1) to basal therapy with insulin degludec or insulin glargine. Insulin aspart is used as bolus therapy in both treatment arms. DISCUSSION In contrast to most other insulin studies the HypoDeg trial includes only patients at high risk of hypoglycaemia. The HypoDeg trial will compare treatment with insulin degludec to insulin glargine U100 in terms of risk of nocturnal hypoglycaemic episodes in patients with type 1 diabetes with the greatest potential to benefit from near-physiological insulin replacement therapy. www.clinicaltrials.gov : NCT02192450.
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Affiliation(s)
- Rikke Mette Agesen
- Department of Endocrinology and Nephrology, Nordsjællands Hospital, Hillerød, Dyrehavevej 29, DK-3400 Hillerød, Denmark
| | | | | | - Henning Beck-Nielsen
- Department of Endocrinology M, Odense University Hospital, Søndre Boulevard 29, DK-5000 Odense C, Denmark
- Faculty of Health Sciences, University of Southern Denmark, J.B. Winsløws Vej 19, 3, DK-5000 Odense C, Denmark
| | - Peter Gustenhoff
- Department of Endocrinology, Aalborg University Hospital, Mølleparkvej 4, DK-9000, Aalborg, Denmark
| | - Troels Krarup Hansen
- Steno Diabetes Center Aarhus, Hedeager 3, DK-8200 Aarhus N, Denmark
- Health, University of Aarhus, Nordre Ringgade 1, DK-8000 Aarhus C, Denmark
| | - Christoffer Hedetoft
- Department of Internal Medicine, Køge Sygehus, Lykkebækvej 1, DK-4600 Køge, Denmark
| | - Tonny Jensen
- Department of Medical Endocrinology, Copenhagen University Hospital (Rigshospitalet), Blegdamsvej 9, DK-2100 Copenhagen, Denmark
| | - Claus Bogh Juhl
- Department of Medicine, Sydvestjysk Sygehus, Finsensgade 35, DK-6700 Esbjerg, Denmark
| | - Susanne Søgaard Lerche
- Department of Diabetes and Hormonal Diseases, Lillebælt Hospital Kolding, Sygehusvej 24, DK-6000 Kolding, Denmark
| | - Kirsten Nørgaard
- Steno Diabetes Center Copenhagen, Niels Steensens Vej 2, DK-2820 Gentofte, Denmark
- Department of Endocrinology, Hvidovre University Hospital, Kettegaards Alle 30, DK-2650 Hvidovre, Denmark
| | - Hans-Henrik Parving
- Health, University of Aarhus, Nordre Ringgade 1, DK-8000 Aarhus C, Denmark
- Department of Medical Endocrinology, Copenhagen University Hospital (Rigshospitalet), Blegdamsvej 9, DK-2100 Copenhagen, Denmark
| | - Lise Tarnow
- Health, University of Aarhus, Nordre Ringgade 1, DK-8000 Aarhus C, Denmark
- Department of Clinical Research, Nordsjællands Hospital, Hillerød, Dyrehavevej 29, DK-3400 Hillerød, Denmark
- Steno Diabetes Center Sjaelland, Akacievej 7, DK-4300 Holbaek, Denmark
| | - Birger Thorsteinsson
- Department of Endocrinology and Nephrology, Nordsjællands Hospital, Hillerød, Dyrehavevej 29, DK-3400 Hillerød, Denmark
- Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, DK-2200 Copenhagen, Denmark
| | - Ulrik Pedersen-Bjergaard
- Department of Endocrinology and Nephrology, Nordsjællands Hospital, Hillerød, Dyrehavevej 29, DK-3400 Hillerød, Denmark
- Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, DK-2200 Copenhagen, Denmark
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9
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Pedersen‐Bjergaard U, Alsifri S, Aronson R, Berković MC, Galstyan G, Gydesen H, Lekdorf JB, Ludvik B, Moberg E, Ramachandran A, Khunti K. Comparison of the HAT study, the largest global hypoglycaemia study to date, with similar large real-world studies. Diabetes Obes Metab 2019; 21:844-853. [PMID: 30456887 PMCID: PMC6590793 DOI: 10.1111/dom.13588] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 11/14/2018] [Accepted: 11/15/2018] [Indexed: 11/30/2022]
Abstract
AIMS Optimal diabetes care requires clear understanding of the incidence of hypoglycaemia in real-world clinical practice. Current data on hypoglycaemia are generally limited to those reported from randomised controlled clinical trials. The Hypoglycaemia Assessment Tool (HAT) study, a non-interventional real-world study of hypoglycaemia, assessed hypoglycaemia in 27 585 individuals across 24 countries. The present study compared the incidence of hypoglycaemia from the HAT study with other similarly designed, large, real-world studies. MATERIALS AND METHODS A literature search of PubMed (1995-2017) for population-based studies of insulin-treated patients with type 1 or type 2 diabetes (T1D, T2D), excluding clinical trials and reviews, identified comparable population-based studies reporting the incidence of hypoglycaemia. RESULTS The 24 comparative studies, including more than 24 000 participants with T1D and more than 160 000 participants with T2D, varied in design, size, inclusion criteria, definitions of hypoglycaemia and method of recording hypoglycaemia. Reported rates (events per patient-year [PPY]) of hypoglycaemia were higher in patients with T1D than in those with T2D (overall T1D, 21.8-73.3 and T2D, 1.3-37.7; mild/non-severe T1D, 29.0-126.7 and T2D, 1.3-41.5; severe T1D, 0.7-5.8 and T2D, 0.0-2.5; nocturnal T1D, 2.6-11.3 and T2D, 0.38-9.7) and were similar to the ranges found in the HAT study. CONCLUSIONS The HAT data on hypoglycaemia incidence were comparable with those from other real-world studies and indicate a high incidence of hypoglycaemia among insulin-treated patients. Differences in rates among studies are mostly explained by differences in patient populations and study methodology. The goal of reducing hypoglycaemia should be a target for continued educational and evidence-based pharmacological interventions.
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Affiliation(s)
| | | | - Ronnie Aronson
- Endocrinology and MetabolismLMC Diabetes and EndocrinologyTorontoOntarioCanada
| | | | | | | | | | - Bernhard Ludvik
- Division of Endocrinology and MetabolismRudolfstiftung Hospital and Karl‐Landsteiner InstituteViennaAustria
| | | | | | - Kamlesh Khunti
- Diabetes Research CentreUniversity of LeicesterLeicesterUK
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10
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Henriksen MM, Andersen HU, Thorsteinsson B, Pedersen-Bjergaard U. Asymptomatic hypoglycaemia in Type 1 diabetes: incidence and risk factors. Diabet Med 2019; 36:62-69. [PMID: 30368899 DOI: 10.1111/dme.13848] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/25/2018] [Indexed: 01/24/2023]
Abstract
AIM The epidemiology of asymptomatic (silent) hypoglycaemia is not well-described. We investigated incidence and risk factors for asymptomatic hypoglycaemia in Type 1 diabetes. METHODS A cohort of 153 people with Type 1 diabetes participated in 6 days of blinded continuous glucose monitoring (CGM) and recording of hypoglycaemia symptoms. At entry, hypoglycaemia awareness was classified (by three different methods) and HbA1c and C-peptide were measured. Hypoglycaemic episodes were defined as interstitial glucose ≤ 3.9 mmol/l (IG3.9 ) or ≤ 3.0 mmol/l (IG3.0 ) for ≥ 15 min, and were considered asymptomatic if no hypoglycaemic symptoms were reported. RESULTS At thresholds IG3.9 and IG3.0 , the incidence rates of hypoglycaemic episodes were 5.0 (7.9) [median (IQR)] and 1.3 (3.4) episodes/person-week, respectively. Three-quarters of episodes were asymptomatic. In total, 77% and 52% of participants experienced one or more episode of asymptomatic hypoglycaemia at IG3.9 and IG3.0 [3.0 (6.2) and 1.0 (2.3) asymptomatic episodes/person-week]. At multivariate analysis, reduced awareness was positively associated with asymptomatic hypoglycaemia, particularly nocturnal events, and negatively with symptomatic hypoglycaemia. High insulin dose was associated with increased risk of both asymptomatic and symptomatic hypoglycaemia, whereas low HbA1c and long diabetes duration were risk factors only for symptomatic hypoglycaemia. CONCLUSIONS Asymptomatic hypoglycaemia constitutes the majority of hypoglycaemic events in Type 1 diabetes. Reduced hypoglycaemia awareness and high insulin dose are risk factors for asymptomatic hypoglycaemia but other conventional risk factors for severe hypoglycaemia do not correlate with risk of asymptomatic episodes.
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Affiliation(s)
- M M Henriksen
- Department of Endocrinology and Nephrology, Nordsjaellands Hospital, Hillerød
| | | | - B Thorsteinsson
- Department of Endocrinology and Nephrology, Nordsjaellands Hospital, Hillerød
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - U Pedersen-Bjergaard
- Department of Endocrinology and Nephrology, Nordsjaellands Hospital, Hillerød
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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11
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Smith L, Chakraborty D, Bhattacharya P, Sarmah D, Koch S, Dave KR. Exposure to hypoglycemia and risk of stroke. Ann N Y Acad Sci 2018; 1431:25-34. [PMID: 29917249 DOI: 10.1111/nyas.13872] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Revised: 04/23/2018] [Accepted: 05/08/2018] [Indexed: 12/25/2022]
Abstract
In the treatment of both type 1 and type 2 diabetes mellitus, maintaining a euglycemic state represents one of the key challenges. Improper dosing and administration of glucose-lowering drugs is associated with an increased risk of recurrent hypoglycemia episodes. In addition, the risk of adverse cardiovascular events in diabetic patients, particularly myocardial infarctions and strokes, is well established. Current research indicates a potential link between the baseline risk of cardio/cerebrovascular events in diabetic patients and exposure to hypoglycemia. In this review of the literature, we aim to determine if a relationship exists between recurrent hypoglycemia and adverse neurovascular events.
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Affiliation(s)
- Logan Smith
- Cerebral Vascular Disease Research Laboratories, University of Miami, Miami, Florida.,Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida
| | - Diya Chakraborty
- Cerebral Vascular Disease Research Laboratories, University of Miami, Miami, Florida.,Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida
| | - Pallab Bhattacharya
- National Institute of Pharmaceutical Education and Research, Ahmedabad, Gujarat, India.,Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Deepaneeta Sarmah
- National Institute of Pharmaceutical Education and Research, Ahmedabad, Gujarat, India
| | - Sebastian Koch
- Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida
| | - Kunjan R Dave
- Cerebral Vascular Disease Research Laboratories, University of Miami, Miami, Florida.,Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida.,Neuroscience Program, University of Miami Miller School of Medicine, Miami, Florida
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12
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Abstract
The role of intensive glycaemic control in preventing microvascular disease in diabetes is well established. Iatrogenic hypoglycaemia is, however, a major barrier to effective treatment. Hypoglycaemia is associated with a significant level of morbidity and, despite pharmacological and technological therapeutic advances, reported rates of severe hypoglycaemia in clinical practice have not fallen over the last 20 years. This suggests that human factors are of major relevance and that ensuring the effective self-management of diabetes is an important strategy for the reduction of hypoglycaemic risk. Most of the evidence for the impact of this strategy on hypoglycaemia risk is confined to adults with type 1 diabetes although, in this review, we also cite studies that have specifically addressed this in type 2 diabetes. There are relatively few adequately powered RCTs that have rigorously evaluated the effectiveness of structured education and training programmes on hypoglycaemia; however, the available data suggest a subsequent reduction in severe hypoglycaemia rates of around 50%, a rate reduction that is comparable with that observed following technological interventions. Furthermore, longitudinal observational cohorts support these data, showing similar reductions in rates of hypoglycaemia following structured education. Those who continue to experience recurrent hypoglycaemia and impaired awareness of hypoglycaemia despite education and training in diabetes self-management may benefit from technological interventions and/or interventions that specifically address psychological factors that contribute to hypoglycaemia risk; however, there is urgent need for further research in this area. In the meantime, structured education for effective self-management of diabetes should be part of routine therapy for all those with type 1 diabetes.
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Affiliation(s)
- Ahmed Iqbal
- Department of Oncology and Metabolism, Room EU38, E Floor, School of Medicine and Biomedical Sciences, University of Sheffield, Beech Hill Road, Sheffield, S10 2RX, UK
| | - Simon R Heller
- Department of Oncology and Metabolism, Room EU38, E Floor, School of Medicine and Biomedical Sciences, University of Sheffield, Beech Hill Road, Sheffield, S10 2RX, UK.
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13
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Top-down mass spectrometric immunoassay for human insulin and its therapeutic analogs. J Proteomics 2018; 175:27-33. [DOI: 10.1016/j.jprot.2017.08.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 07/24/2017] [Accepted: 08/01/2017] [Indexed: 01/08/2023]
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14
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Oskarsson P, Antuna R, Geelhoed-Duijvestijn P, Krӧger J, Weitgasser R, Bolinder J. Impact of flash glucose monitoring on hypoglycaemia in adults with type 1 diabetes managed with multiple daily injection therapy: a pre-specified subgroup analysis of the IMPACT randomised controlled trial. Diabetologia 2018; 61:539-550. [PMID: 29273897 PMCID: PMC6448969 DOI: 10.1007/s00125-017-4527-5] [Citation(s) in RCA: 124] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 11/09/2017] [Indexed: 01/01/2023]
Abstract
AIMS/HYPOTHESIS Evidence for the effectiveness of interstitial glucose monitoring in individuals with type 1 diabetes using multiple daily injection (MDI) therapy is limited. In this pre-specified subgroup analysis of the Novel Glucose-Sensing Technology and Hypoglycemia in Type 1 Diabetes: a Multicentre, Non-masked, Randomised Controlled Trial' (IMPACT), we assessed the impact of flash glucose technology on hypoglycaemia compared with capillary glucose monitoring. METHODS This multicentre, prospective, non-masked, RCT enrolled adults from 23 European diabetes centres. Individuals were eligible to participate if they had well-controlled type 1 diabetes (diagnosed for ≥5 years), HbA1c ≤ 58 mmol/mol [7.5%], were using MDI therapy and on their current insulin regimen for ≥3 months, reported self-monitoring of blood glucose on a regular basis (equivalent to ≥3 times/day) for ≥2 months and were deemed technically capable of using flash glucose technology. Individuals were excluded if they were diagnosed with hypoglycaemia unawareness, had diabetic ketoacidosis or myocardial infarction in the preceding 6 months, had a known allergy to medical-grade adhesives, used continuous glucose monitoring (CGM) within the previous 4 months or were currently using CGM or sensor-augmented pump therapy, were pregnant or planning pregnancy or were receiving steroid therapy for any disorders. Following 2 weeks of blinded (to participants and investigator) sensor wear by all participants, participants with sensor data for more than 50% of the blinded wear period (or ≥650 individual sensor results) were randomly assigned, in a 1:1 ratio by a central interactive web response system (IWRS) using the biased-coin minimisation method, to flash sensor-based glucose monitoring (intervention group) or self-monitoring of capillary blood glucose (control group). The control group had two further 14 day blinded sensor-wear periods at the 3 and 6 month time points. Participants, investigators and staff were not masked to group allocation. The primary outcome was the change in time in hypoglycaemia (<3.9 mmol/l) between baseline and 6 months in the full analysis set. RESULTS Between 4 September 2014 and 12 February 2015, 167 participants using MDI were enrolled. After screening and the baseline phase, participants were randomised to intervention (n = 82) and control groups (n = 81). One woman from each group was excluded owing to pregnancy; the full analysis set included 161 randomised participants. At 6 months, mean time in hypoglycaemia was reduced by 46.0%, from 3.44 h/day to 1.86 h/day in the intervention group (baseline adjusted mean change, -1.65 h/day), and from 3.73 h/day to 3.66 h/day in the control group (baseline adjusted mean change, 0.00 h/day), with a between-group difference of -1.65 (95% CI -2.21, -1.09; p < 0.0001). For participants in the intervention group, the mean ± SD daily sensor scanning frequency was 14.7 ± 10.7 (median 12.3) and the mean number of self-monitored blood glucose tests performed per day reduced from 5.5 ± 2.0 (median 5.4) at baseline to 0.5 ± 1.0 (median 0.1). The baseline frequency of self-monitored blood glucose tests by control participants was maintained (from 5.6 ± 1.9 [median 5.2] to 5.5 ± 2.6 [median 5.1] per day). Treatment satisfaction and perception of hypo/hyperglycaemia were improved compared with control. No device-related hypoglycaemia or safety-related issues were reported. Nine serious adverse events were reported for eight participants (four in each group), none related to the device. Eight adverse events for six of the participants in the intervention group were also reported, which were related to sensor insertion/wear; four of these participants withdrew because of the adverse event. CONCLUSIONS/INTERPRETATION Use of flash glucose technology in type 1 diabetes controlled with MDI therapy significantly reduced time in hypoglycaemia without deterioration of HbA1c, and improved treatment satisfaction. TRIAL REGISTRATION ClinicalTrials.gov NCT02232698 FUNDING: Abbott Diabetes Care, Witney, UK.
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Affiliation(s)
- Per Oskarsson
- Department of Medicine, Karolinska University Hospital Huddinge, Karolinska Institute, 141 86, Stockholm, Sweden
| | - Ramiro Antuna
- Department of Medicine, Clinica Diabetologica, Gijon, Spain
| | | | - Jens Krӧger
- Department of Diabetes, Zentrum für Diabetologie Hamburg Bergedorf, Hamburg, Germany
| | - Raimund Weitgasser
- Department of Medicine, Wehrle-Diakonissen Hospital, Salzburg, Austria
- 1st Department of Medicine, University Hospital of Paracelsus Medical Private University, Salzburg, Austria
| | - Jan Bolinder
- Department of Medicine, Karolinska University Hospital Huddinge, Karolinska Institute, 141 86, Stockholm, Sweden.
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15
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Thomas A, Shin J, Jiang B, McMahon C, Kolassa R, Vigersky RA. The Development of New Composite Metrics for the Comprehensive Analytic and Visual Assessment of Hypoglycemia Using the Hypo-Triad. J Diabetes Sci Technol 2018; 12:69-75. [PMID: 28748706 PMCID: PMC5761982 DOI: 10.1177/1932296817721242] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Quantifying hypoglycemia has traditionally been limited to using the frequency of hypoglycemic events during a given time interval using data from blood glucose (BG) testing. However, continuous glucose monitoring (CGM) captures three parameters-a Hypo-Triad-unavailable with BG monitoring that can be used to better characterize hypoglycemia: area under the curve (AUC), time (duration of hypoglycemia), and frequency of daily episodes below a specified threshold. METHODS We developed two new analytic metrics to enhance the traditional Hypo-Triad of CGM-derived data to more effectively capture the intensity of hypoglycemia (IntHypo) and overall hypoglycemic environment called the "hypoglycemia risk volume" (HypoRV). We reanalyzed the CGM data from the ASPIRE In-Home study, a randomized, controlled trial of a sensor-integrated pump system with a low glucose threshold suspend feature (SIP+TS), using these new metrics and compared them to standard metrics of hypoglycemia. RESULTS IntHypo and HypoRV provide additional insights into the benefit of a SIP+TS system on glycemic exposure when compared to the standard reporting methods. In addition, the visual display of these parameters provides a unique and intuitive way to understand the impact of a diabetes intervention on a cohort of subjects as well as on individual patients. CONCLUSION The IntHypo and HypoRV are new and enhanced ways of analyzing CGM-derived data in diabetes intervention studies which could lead to new insights in diabetes management. They require validation using existing, ongoing, or planned studies to determine whether they are superior to existing metrics.
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Affiliation(s)
| | - John Shin
- Medtronic Diabetes, Northridge, CA, USA
| | | | | | - Ralf Kolassa
- Diabetologische Schwerpunktpraxis, Priamosstraße, Bergheim/Erft, Germany
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16
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Abstract
PURPOSE OF REVIEW To describe potential factors influencing reporting of severe hypoglycemia in adult patients with type 1 diabetes and to analyze their effect on reported rates of severe hypoglycemia. RECENT FINDINGS Reported rates of severe hypoglycemia defined as need for third party assistance vary between 0.3-3.0 events per patient-year in unselected cohorts, corresponding to a yearly prevalence range of 10-53%. When defined as need for parenteral therapy with glucose or glucagon or need for admission to an emergency unit or hospitalization, incidence and prevalence rates of severe hypoglycemia are 0.02-0.5 events per patient-year and 1-29%, respectively. When subjects with recurrent severe hypoglycemia in the past or suffering from impaired hypoglycemia awareness are excluded from participation in studies, lower rates are reported. Studies applying anonymous reporting or reporting by partners report higher rates of severe hypoglycemia. There is a large variation between studies reporting incidence and prevalence of severe hypoglycemia in patients with type 1 diabetes, mainly explained by definition of severity, methods of reporting, and patient selection. These findings call for consensus about hypoglycemia definition and reporting in future research.
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Affiliation(s)
- Ulrik Pedersen-Bjergaard
- Department of Cardiology, Nephrology and Endocrinology, Nordsjællands Hospital, Dyrehavevej 29, 3400, Hillerød, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Birger Thorsteinsson
- Department of Cardiology, Nephrology and Endocrinology, Nordsjællands Hospital, Dyrehavevej 29, 3400, Hillerød, Denmark.
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
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17
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Wang H, Donnan PT, Leese CJ, Duncan E, Fitzpatrick D, Frier BM, Leese GP. Temporal changes in frequency of severe hypoglycemia treated by emergency medical services in types 1 and 2 diabetes: a population-based data-linkage cohort study. Clin Diabetes Endocrinol 2017; 3:7. [PMID: 28824815 PMCID: PMC5558664 DOI: 10.1186/s40842-017-0045-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 08/04/2017] [Indexed: 02/03/2023] Open
Abstract
Background Almost 20 years ago, the frequencies of severe hypoglycemia requiring emergency medical treatment were reported in people with types 1 and 2 diabetes in the Tayside region of Scotland. With subsequent improvements in the treatment of diabetes, concurrent with changes in the provision of emergency medical care, a decline in the frequency of severe hypoglycemia could be anticipated. The present population-based data-linkage cohort study aimed to ascertain whether a temporal change has occurred in the incidence rates of hypoglycemia requiring emergency medical services in people with types 1 and 2 diabetes. Methods The study population comprised all people with diabetes in Tayside, Scotland over the period 1 January 2011 to 31 December 2012. Patients’ data from different healthcare sources were linked anonymously to measure the incidence rates of hypoglycemia requiring emergency medical services that include treatment by ambulance staff and in hospital emergency departments, and necessitated hospital admission. These were compared with data recorded in 1997–1998 in the same region. Results In January 2011 to December 2012, 2029 people in Tayside had type 1 diabetes and 21,734 had type 2 diabetes, compared to 977 and 7678, respectively, in June 1997 to May 1998. In people with type 2 diabetes, the proportion treated with sulfonylureas had declined from 36.8 to 22.4% (p < 0.001), while insulin-treatment had increased from 11.7 to 18.7% (p < 0.001). The incidence rate of hypoglycemia requiring emergency medical treatment had significantly fallen from 0.115 (95% CI: 0.094–0.136) to 0.082 (0.073–0.092) events per person per year in type 1 diabetes (p < 0.001), and from 0.118 (0.095–0.141) to 0.037 (0.003–0.041) in insulin-treated type 2 diabetes (p = 0.008). However, the absolute annual number of hypoglycemia events requiring emergency treatment was 1.4-fold higher. Conclusions Although from 1998 to 2012 the incidences of hypoglycemia requiring emergency medical services appeared to have declined by a third in type 1 diabetes and by two thirds in insulin-treated type 2 diabetes, because the prevalence of diabetes was higher (2.7 fold), the number of severe hypoglycemia events requiring emergency medical treatment was greater.
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Affiliation(s)
- Huan Wang
- Dundee Epidemiology and Biostatistics Unit, Population Health Sciences, University of Dundee, The Mackenzie Building, Kirsty Semple Way, Dundee, DD2 4BF UK
| | - Peter T Donnan
- Dundee Epidemiology and Biostatistics Unit, Population Health Sciences, University of Dundee, The Mackenzie Building, Kirsty Semple Way, Dundee, DD2 4BF UK
| | - Callum J Leese
- University of Edinburgh, Faculty of Medicine, Edinburgh, UK
| | - Edward Duncan
- NMAHP Research Unit, University of Stirling, Stirling, UK
| | - David Fitzpatrick
- NMAHP Research Unit, University of Stirling, Stirling, UK.,Scottish Ambulance Service, National Headquarters, Edinburgh, UK
| | - Brian M Frier
- BHF Centre for Cardiovascular Science, The Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Graham P Leese
- School of Medicine, Ninewells Hospital and Medical School, Dundee, UK
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18
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Novodvorsky P, Bernjak A, Chow E, Iqbal A, Sellors L, Williams S, Fawdry RA, Parekh B, Jacques RM, Marques JLB, Sheridan PJ, Heller SR. Diurnal Differences in Risk of Cardiac Arrhythmias During Spontaneous Hypoglycemia in Young People With Type 1 Diabetes. Diabetes Care 2017; 40:655-662. [PMID: 28213374 DOI: 10.2337/dc16-2177] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 01/23/2017] [Indexed: 02/03/2023]
Abstract
OBJECTIVE Hypoglycemia may exert proarrhythmogenic effects on the heart via sympathoadrenal stimulation and hypokalemia. Hypoglycemia-induced cardiac dysrhythmias are linked to the "dead-in-bed syndrome," a rare but devastating condition. We examined the effect of nocturnal and daytime clinical hypoglycemia on electrocardiogram (ECG) in young people with type 1 diabetes. RESEARCH DESIGN AND METHODS Thirty-seven individuals with type 1 diabetes underwent 96 h of simultaneous ambulatory ECG and blinded continuous interstitial glucose monitoring (CGM) while symptomatic hypoglycemia was recorded. Frequency of arrhythmias, heart rate variability, and cardiac repolarization were measured during hypoglycemia and compared with time-matched euglycemia during night and day. RESULTS A total of 2,395 h of simultaneous ECG and CGM recordings were obtained; 159 h were designated hypoglycemia and 1,355 h euglycemia. A median duration of nocturnal hypoglycemia of 60 min (interquartile range 40-135) was longer than daytime hypoglycemia of 44 min (30-70) (P = 0.020). Only 24.1% of nocturnal and 51.0% of daytime episodes were symptomatic. Bradycardia was more frequent during nocturnal hypoglycemia compared with matched euglycemia (incident rate ratio [IRR] 6.44 [95% CI 6.26, 6.63], P < 0.001). During daytime hypoglycemia, bradycardia was less frequent (IRR 0.023 [95% CI 0.002, 0.26], P = 0.002) and atrial ectopics more frequent (IRR 2.29 [95% CI 1.19, 4.39], P = 0.013). Prolonged QTc, T-peak to T-end interval duration, and decreased T-wave symmetry were detected during nocturnal and daytime hypoglycemia. CONCLUSIONS Asymptomatic hypoglycemia was common. We identified differences in arrhythmic risk and cardiac repolarization during nocturnal versus daytime hypoglycemia in young adults with type 1 diabetes. Our data provide further evidence that hypoglycemia is proarrhythmogenic.
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Affiliation(s)
- Peter Novodvorsky
- Department of Oncology and Metabolism, University of Sheffield, Sheffield, U.K.,Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, U.K
| | - Alan Bernjak
- Department of Oncology and Metabolism, University of Sheffield, Sheffield, U.K.,INSIGNEO Institute for in silico Medicine, University of Sheffield, Sheffield, U.K
| | - Elaine Chow
- Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, U.K.,Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, U.K
| | - Ahmed Iqbal
- Department of Oncology and Metabolism, University of Sheffield, Sheffield, U.K.,Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, U.K.,Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, U.K
| | - Lianne Sellors
- Department of Oncology and Metabolism, University of Sheffield, Sheffield, U.K.,Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, U.K
| | - Scott Williams
- Department of Oncology and Metabolism, University of Sheffield, Sheffield, U.K.,Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, U.K
| | - Robert A Fawdry
- Department of Oncology and Metabolism, University of Sheffield, Sheffield, U.K.,Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, U.K
| | - Bhavin Parekh
- Department of Biomedical Science, University of Sheffield, Sheffield, U.K
| | - Richard M Jacques
- School of Health and Related Research, University of Sheffield, Sheffield, U.K
| | | | - Paul J Sheridan
- Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, U.K.,Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, U.K
| | - Simon R Heller
- Department of Oncology and Metabolism, University of Sheffield, Sheffield, U.K. .,Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, U.K
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19
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Pedersen-Bjergaard U, Kristensen PL, Beck-Nielsen H, Nørgaard K, Perrild H, Christiansen JS, Jensen T, Parving HH, Thorsteinsson B, Tarnow L. The potential for improvement of outcomes by personalized insulin treatment of type 1 diabetes as assessed by analysis of single-patient data from a randomized controlled cross-over insulin trial. Diabetes Res Clin Pract 2017; 123:143-148. [PMID: 28012403 DOI: 10.1016/j.diabres.2016.11.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 10/12/2016] [Accepted: 11/06/2016] [Indexed: 11/22/2022]
Abstract
AIMS The evidence for optimal insulin treatment in type 1 diabetes is mainly based on randomised controlled trials applying a parallel-group design. Such trials yield robust general results but crucial individual treatment effects cannot be extracted. We aimed to assess the potential for further improvement of outcomes by personalized insulin therapy by analyzing data from a cross-over trial at individual level. METHODS Post hoc analysis of data from a two-year multicentre, prospective, randomised, open, blinded endpoint (PROBE) trial (the HypoAna trial). In a cross-over design 114 patients with type 1 diabetes and recurrent severe hypoglycemia were treated with basal-bolus therapy based on analog (detemir/aspart) or human (NPH/regular) insulin aiming at maintenance of baseline HbA1c levels. For each patient a superior outcome was defined as fewer events of severe hypoglycemia defined by need for third party treatment assistance or a more than 0.4% (4.4mmol/mol) lower HbA1c. RESULTS Only one quarter had comparable outcome of the two treatments in terms of rate of severe hypoglycemia or HbA1c. Twice as many patients had superior outcome of analog-based as compared to human insulin-based insulin treatment. The rate of severe hypoglycemia with the superior treatment was lower compared to the rates obtained with analog insulin and with human insulin (0.67, 1.09, and 1.57 episode per patient-year, respectively (p<0.0001)). CONCLUSIONS Personalized insulin treatment of type 1 diabetes based on single-patient evidence may improve outcomes significantly compared to a general treatment approach.
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Affiliation(s)
- Ulrik Pedersen-Bjergaard
- Department of Cardiology, Nephrology and Endocrinology, Nordsjællands University Hospital, Hillerød, Denmark; Faculties of Health Sciences, University of Copenhagen, Denmark.
| | - Peter L Kristensen
- Department of Cardiology, Nephrology and Endocrinology, Nordsjællands University Hospital, Hillerød, Denmark
| | - Henning Beck-Nielsen
- Department of Endocrinology M, Odense University Hospital, Odense, Denmark; Faculties of Health Sciences, University of Southern Denmark, Denmark
| | - Kirsten Nørgaard
- Department of Endocrinology, Hvidovre University Hospital, Hvidovre, Denmark
| | - Hans Perrild
- Department of Internal Medicine, Bispebjerg University Hospital, Copenhagen, Denmark
| | - Jens S Christiansen
- Department of Endocrinology M, Aarhus University Hospital, Aarhus, Denmark; Faculties of Health Sciences, University of Aarhus, Denmark
| | - Tonny Jensen
- Department of Medical Endocrinology, Copenhagen University Hospital (Rigshospitalet), Copenhagen, Denmark
| | - Hans-Henrik Parving
- Department of Medical Endocrinology, Copenhagen University Hospital (Rigshospitalet), Copenhagen, Denmark; Faculties of Health Sciences, University of Aarhus, Denmark
| | - Birger Thorsteinsson
- Department of Cardiology, Nephrology and Endocrinology, Nordsjællands University Hospital, Hillerød, Denmark; Faculties of Health Sciences, University of Copenhagen, Denmark
| | - Lise Tarnow
- Department of Clinical Research, Nordsjællands University Hospital, Hillerød, Denmark; Steno Diabetes Center, Gentofte, Denmark; Faculties of Health Sciences, University of Aarhus, Denmark
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Henriksen MM, Færch L, Thorsteinsson B, Pedersen-Bjergaard U. Long-Term Prediction of Severe Hypoglycemia in Type 1 Diabetes: Is It Really Possible? J Diabetes Sci Technol 2016; 10:1230-1235. [PMID: 27651425 PMCID: PMC5094341 DOI: 10.1177/1932296816664745] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Prediction of risk of severe hypoglycemia (SH) in patients with type 1 diabetes is important to prevent future episodes, but it is unknown if it is possible to predict the long-term risk of SH. The aim of the study is to assess if long-term prediction of SH is possible in type 1 diabetes. METHODS A follow-up study was performed with 98 patients with type 1 diabetes. At baseline and at follow-up, the patients filled in a questionnaire about diabetes history and complications, number of SH in the preceding year and state of awareness, and HbA1c and C-peptide levels were measured. RESULTS During the 12 years of follow-up, there was a decrease in HbA1c, C-peptide levels, and incidence of SH (1.1 to 0.4 episodes per patient-year; P < .001). At baseline, the relative rate of SH was 3.6 (P = .001) and 10.9 (P < .0001) in patients with impaired awareness and unawareness of hypoglycemia, respectively, as compared to patients with normal awareness. At follow-up, patients with unawareness at baseline tended to have maintained an increased rate of SH (RR = 3.1; P = .07). Impaired awareness, HbA1c and C-peptide determined at baseline did not correspond with an increased rate of SH at follow-up. CONCLUSIONS Long-term prediction of severe hypoglycemia in type 1 diabetes was not possible, although baseline hypoglycemia unawareness tended to remain a predictor for risk of SH at follow-up. Therefore, it is important repeatedly to assess the different risk factors of SH to determine the actual risk.
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Affiliation(s)
- Marie Moth Henriksen
- Department of Cardiology, Nephrology and Endocrinology, Nordsjællands Hospital Hillerød, Hillerød, Denmark
| | - Louise Færch
- Department of Cardiology, Nephrology and Endocrinology, Nordsjællands Hospital Hillerød, Hillerød, Denmark
| | - Birger Thorsteinsson
- Department of Cardiology, Nephrology and Endocrinology, Nordsjællands Hospital Hillerød, Hillerød, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Ulrik Pedersen-Bjergaard
- Department of Cardiology, Nephrology and Endocrinology, Nordsjællands Hospital Hillerød, Hillerød, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Kristensen PL, Pedersen-Bjergaard U, Due-Andersen R, Høi-Hansen T, Grimmeshave L, Lyssenko V, Groop L, Holst JJ, Vaag AA, Thorsteinsson B. Impact of the TCF7L2 genotype on risk of hypoglycaemia and glucagon secretion during hypoglycaemia. Endocr Connect 2016; 5:53-60. [PMID: 27758844 PMCID: PMC5097143 DOI: 10.1530/ec-16-0050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 10/10/2016] [Indexed: 11/25/2022]
Abstract
INTRODUCTION In healthy carriers of the T allele of the transcription factor 7-like 2 (TCF7L2), fasting plasma glucagon concentrations are lower compared with those with the C allele. We hypothesised that presence of the T allele is associated with a diminished glucagon response during hypoglycaemia and a higher frequency of severe hypoglycaemia (SH) in type 1 diabetes (T1DM). MATERIAL AND METHODS This is a post hoc study of an earlier prospective observational study of SH and four mechanistic studies of physiological responses to hypoglycaemia. 269 patients with T1DM were followed in a one-year observational study. A log-linear negative binomial model was applied with events of SH as dependent variable and TCF7L2 alleles as explanatory variable. In four experimental studies including 65 people, TCF7L2 genotyping was done and plasma glucagon concentration during experimental hypoglycaemia was determined. RESULTS Incidences of SH were TT 0.54, TC 0.98 and CC 1.01 episodes per patient-year with no significant difference between groups. During experimental hypoglycaemia, the TCF7L2 polymorphism did not influence glucagon secretion. DISCUSSION Patients with T1DM carrying the T allele of the TCF7L2 polymorphism do not exhibit diminished glucagon response during hypoglycaemia and are not at increased risk of severe hypoglycaemia compared with carriers of the C allele.
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Affiliation(s)
- Peter L Kristensen
- Department of CardiologyNephrology and Endocrinology, Nordsjællands Hospital, Hillerød, Denmark
| | - Ulrik Pedersen-Bjergaard
- Department of CardiologyNephrology and Endocrinology, Nordsjællands Hospital, Hillerød, Denmark
- Faculty of Health and Medical SciencesUniversity of Copenhagen, Copenhagen, Denmark
| | - Rikke Due-Andersen
- Department of CardiologyNephrology and Endocrinology, Nordsjællands Hospital, Hillerød, Denmark
- Lægerne på EllemarksvejKøge, Denmark
| | - Thomas Høi-Hansen
- Department of CardiologyNephrology and Endocrinology, Nordsjællands Hospital, Hillerød, Denmark
- Department of CardiologyHerlev-Gentofte University Hospital, Herlev, Denmark
| | - Lise Grimmeshave
- Department of CardiologyNephrology and Endocrinology, Nordsjællands Hospital, Hillerød, Denmark
- Novo Nordisk A/SSøborg, Denmark
| | - Valeriya Lyssenko
- Steno Diabetes CenterGentofte, Denmark
- Lund University Diabetes CentreSkåne University Hospital, Malmø, Sweden
| | - Leif Groop
- Lund University Diabetes CentreSkåne University Hospital, Malmø, Sweden
- Finnish Institute for Molecular Medicine (FIMM)Helsinki University, Helsinki, Finland
| | - Jens J Holst
- Faculty of Health and Medical SciencesUniversity of Copenhagen, Copenhagen, Denmark
- Department of Biomedical SciencesNNF Center for Basic Metabolic Research, The Panum Institute, Copenhagen, Denmark
| | - Allan A Vaag
- Faculty of Health and Medical SciencesUniversity of Copenhagen, Copenhagen, Denmark
- Department of EndocrinologyCopenhagen University Hospital (Rigshospitalet), Copenhagen, Denmark
| | - Birger Thorsteinsson
- Department of CardiologyNephrology and Endocrinology, Nordsjællands Hospital, Hillerød, Denmark
- Faculty of Health and Medical SciencesUniversity of Copenhagen, Copenhagen, Denmark
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Pedersen-Bjergaard U, Kristensen PL, Nørgaard K, Perrild H, Jensen T, Thorsteinsson B, Nikolajsen A, Tarnow L. Short-term cost-effectiveness of insulin detemir and insulin aspart in people with type 1 diabetes who are prone to recurrent severe hypoglycemia. Curr Med Res Opin 2016; 32:1719-1725. [PMID: 27326862 DOI: 10.1080/03007995.2016.1205006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVE Based on the data of the HypoAna trial (ClinicalTrials.gov NCT00346996), a short-term cost-effectiveness analysis was conducted comparing an all insulin analogue regimen with an all human insulin regimen in people with type 1 diabetes who are prone to recurrent severe hypoglycemia. METHODS Clinical data from the HypoAna trial and Danish cost data related to the treatment of severe hypoglycemia were used to populate a 1-year cost-effectiveness analysis. Hypoglycemia quality-of-life data were based on previously published utility values, used to calculate the quality-adjusted life-years (QALYs) gained. Sensitivity analyses were conducted to test the robustness of the analysis. The main outcome measure was the incremental cost-effectiveness ratio (ICER). RESULTS The insulin analogue regimen was associated with greater total costs compared with the human insulin regimen (20,418 DKK [1972 GBP] vs. 18,558 DKK [1793 GBP], respectively), primarily driven by the difference in insulin costs. Total costs for corrective actions for hypoglycemic events, however, were lower in the insulin analogue group (927 DKK [89 GBP]) compared with the human insulin group (1311 DKK [127 GBP]), primarily due to a lower event rate. QALYs were higher with insulin analogues vs. human insulin (difference 0.0672). The resulting ICER was 27,685 DKK (2674 GBP) per QALY gained, which is well below the generally accepted cost-effectiveness threshold. CONCLUSIONS The analysis shows that treating people with type 1 diabetes who are prone to recurrent severe hypoglycemia with an insulin analogue regimen is cost-effective compared with a human insulin regimen.
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Affiliation(s)
- Ulrik Pedersen-Bjergaard
- a Department of Cardiology, Nephrology and Endocrinology , Nordsjællands University Hospital-Hillerød , Hillerød , Denmark
- b Health and Medical Sciences , University of Copenhagen , Copenhagen , Denmark
| | - Peter Lommer Kristensen
- a Department of Cardiology, Nephrology and Endocrinology , Nordsjællands University Hospital-Hillerød , Hillerød , Denmark
| | - Kirsten Nørgaard
- c Department of Endocrinology , Hvidovre University Hospital , Hvidovre , Denmark
| | - Hans Perrild
- d Department of Endocrinology and Gastroenterology , Bispebjerg University Hospital , Copenhagen , Denmark
| | - Tonny Jensen
- e Department of Endocrinology , Copenhagen University Hospital (Rigshospitalet) , Copenhagen , Denmark
| | - Birger Thorsteinsson
- a Department of Cardiology, Nephrology and Endocrinology , Nordsjællands University Hospital-Hillerød , Hillerød , Denmark
- b Health and Medical Sciences , University of Copenhagen , Copenhagen , Denmark
| | | | - Lise Tarnow
- g Department of Clinical Medicine - Department of Clinical Epidemiology , University of Aarhus , Aarhus , Denmark
- h Clinical Research Unit, Steno Diabetes Center , Gentofte , Denmark
- i Department of Clinical Research , Nordsjællands University Hospital-Hillerød , Hillerød , Denmark
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Agesen R, Kristensen P, Beck-Nielsen H, Nørgaard K, Perrild H, Christiansen J, Jensen T, Hougaard P, Parving H, Thorsteinsson B, Tarnow L, Pedersen-Bjergaard U. Effect of insulin analogues on frequency of non-severe hypoglycaemia in patients with type 1 diabetes prone to severe hypoglycaemia: The HypoAna trial. DIABETES & METABOLISM 2016; 42:249-55. [DOI: 10.1016/j.diabet.2016.03.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 02/22/2016] [Accepted: 03/01/2016] [Indexed: 10/22/2022]
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Frier BM, Jensen MM, Chubb BD. Hypoglycaemia in adults with insulin-treated diabetes in the UK: self-reported frequency and effects. Diabet Med 2016; 33:1125-32. [PMID: 26248501 PMCID: PMC5054881 DOI: 10.1111/dme.12878] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/29/2015] [Indexed: 01/26/2023]
Abstract
AIM Few real-life studies of non-severe (self-treated) hypoglycaemic events are available. This survey quantified the self-reported frequency of non-severe hypoglycaemia and its effects in adults with insulin-treated diabetes in the UK. METHODS Adults aged > 15 years with Type 1 diabetes or insulin-treated Type 2 diabetes completed ≤ 4 weekly questionnaires (7-day recall). Respondents with Type 2 diabetes were grouped by insulin regimen: basal-only, basal-bolus and 'other'. RESULTS Overall, 1038 respondents (466 with Type 1 diabetes, 572 with Type 2 diabetes) completed 3528 questionnaires. Mean numbers of non-severe events per week were 2.4 (Type 1 diabetes; median = 2) and 0.8 (Type 2 diabetes; median = 0); 23% and 26% of non-severe events occurred at night, respectively. Fatigue and reduced alertness were the commonest issues following events (78% and 51% of respondents, respectively). The effects of nocturnal events persisted longer than those of daytime events: Type 1 diabetes = 10.6 vs. 4.9 h (P = 0.0002); Type 2 diabetes = 15.3 vs. 5.1 h (P < 0.0001). In the week following an event, respondents' blood glucose measurements increased by 4.3 (Type 1 diabetes; 12% increment) and 4.2 (Type 2 diabetes; 21% increment) tests/week. In employed respondents, 20% of events caused work-time loss, more so following nocturnal (vs. daytime) hypoglycaemia: Type 1 diabetes = 2.7 vs. 1.1 h (P = 0.0184); Type 2 diabetes = 2.5 vs. 1.6 h (P = 0.1340). Most respondents rarely/never informed healthcare professionals about events (Type 1 diabetes = 82%, Type 2 diabetes = 69%). CONCLUSIONS Non-severe hypoglycaemia is common in adults with insulin-treated diabetes in the UK, with consequent health-related/economic effects. Communication about non-severe hypoglycaemia is limited and the burden of hypoglycaemia may be underestimated.
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Affiliation(s)
- B M Frier
- The Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - M M Jensen
- Novo Nordisk Scandinavia AB, Copenhagen, Denmark
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25
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Abstract
Intensive glycaemic control reduces the diabetic microvascular disease burden but iatrogenic hypoglycaemia is a major barrier preventing tight glycaemic control because of the limitations of subcutaneous insulin preparations and insulin secretagogues. Severe hypoglycaemia is uncommon early in the disease as robust physiological defences, particularly glucagon and adrenaline release, limit falls in blood glucose whilst associated autonomic symptoms drive patients to take action by ingesting oral carbohydrate. With increasing diabetes duration, glucagon release is progressively impaired and sympatho-adrenal responses are activated at lower glucose levels. Repeated hypoglycaemic episodes contribute to impaired defences, increasing the risk of severe hypoglycaemia in a vicious downward spiral. Managing hypoglycaemia requires a systematic clinical approach with structured insulin self-management training and support of experienced diabetes educators. Judicious use of technologies includes insulin analogues, insulin pump therapy, continuous glucose monitoring, and in a few cases islet cell transplantation. Some individuals require specialist psychological support.
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Affiliation(s)
- Ahmed Iqbal
- Department of Human Metabolism and Oncology, University of Sheffield, School of Medicine and Biomedical Sciences, Beech Hill Road, Sheffield, S10 2RX, UK.
| | - Simon Heller
- Department of Human Metabolism and Oncology, University of Sheffield, School of Medicine and Biomedical Sciences, Beech Hill Road, Sheffield, S10 2RX, UK.
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Heller SR, Frier BM, Hersløv ML, Gundgaard J, Gough SCL. Severe hypoglycaemia in adults with insulin-treated diabetes: impact on healthcare resources. Diabet Med 2016; 33:471-7. [PMID: 26179360 PMCID: PMC5034744 DOI: 10.1111/dme.12844] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/23/2015] [Indexed: 12/12/2022]
Abstract
AIMS To assess resource utilization associated with severe hypoglycaemia across three insulin regimens in a large phase 3a clinical programme involving people with Type 1 diabetes treated with basal-bolus insulin, people with Type 2 diabetes treated with multiple daily injections and people with Type 2 diabetes treated with basal-oral therapy. METHODS Data relating to severe hypoglycaemia events (defined as episodes requiring external assistance) from the insulin degludec and insulin degludec/insulin aspart programme (15 trials) were analysed using descriptive statistics. Comparators included insulin glargine, biphasic insulin aspart, insulin detemir and sitagliptin. Mealtime insulin aspart was used in some regimens. This analysis used the serious adverse events records, which documented the use of ambulance/emergency teams, a hospital/emergency room visit ≤ 24 h, or a hospital visit > 24 h. RESULTS In total, 536 severe hypoglycaemia events were analysed, of which 157 (29.3%) involved an ambulance/emergency team, 64 (11.9%) led to hospital/emergency room attendance of ≤ 24 h and 36 (6.7%) required hospital admission (> 24 h). Although there were fewer events in people with Type 2 diabetes compared with Type 1 diabetes, once a severe episode occurred, the tendency to utilize healthcare resources was higher in Type 2 diabetes vs. Type 1 diabetes. A higher proportion (47.6%) in the basal-oral therapy group required hospital treatment for > 24 h versus the Type 1 diabetes (5.0%) and Type 2 diabetes multiple daily injections (5.3%) groups. CONCLUSION This analysis suggests that severe hypoglycaemia events often result in emergency/ambulance calls and hospital treatment, incurring a substantial health economic burden, and were associated with all insulin regimens.
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MESH Headings
- Administration, Oral
- Adult
- Clinical Trials, Phase III as Topic
- Cohort Studies
- Costs and Cost Analysis
- Diabetes Mellitus, Type 1/blood
- Diabetes Mellitus, Type 1/drug therapy
- Diabetes Mellitus, Type 1/economics
- Diabetes Mellitus, Type 2/blood
- Diabetes Mellitus, Type 2/drug therapy
- Diabetes Mellitus, Type 2/economics
- Dipeptidyl-Peptidase IV Inhibitors/administration & dosage
- Dipeptidyl-Peptidase IV Inhibitors/adverse effects
- Dipeptidyl-Peptidase IV Inhibitors/economics
- Dipeptidyl-Peptidase IV Inhibitors/therapeutic use
- Drug Administration Schedule
- Drug Combinations
- Drug Therapy, Combination/adverse effects
- Drug Therapy, Combination/economics
- Health Care Costs
- Humans
- Hypoglycemia/chemically induced
- Hypoglycemia/economics
- Hypoglycemia/physiopathology
- Hypoglycemia/therapy
- Hypoglycemic Agents/administration & dosage
- Hypoglycemic Agents/adverse effects
- Hypoglycemic Agents/economics
- Hypoglycemic Agents/therapeutic use
- Insulin Aspart/administration & dosage
- Insulin Aspart/adverse effects
- Insulin Aspart/economics
- Insulin Aspart/therapeutic use
- Insulin Detemir/administration & dosage
- Insulin Detemir/adverse effects
- Insulin Detemir/economics
- Insulin Detemir/therapeutic use
- Insulin Glargine/administration & dosage
- Insulin Glargine/adverse effects
- Insulin Glargine/economics
- Insulin Glargine/therapeutic use
- Insulin, Long-Acting/administration & dosage
- Insulin, Long-Acting/adverse effects
- Insulin, Long-Acting/economics
- Insulin, Long-Acting/therapeutic use
- Middle Aged
- Severity of Illness Index
- Sitagliptin Phosphate/administration & dosage
- Sitagliptin Phosphate/adverse effects
- Sitagliptin Phosphate/economics
- Sitagliptin Phosphate/therapeutic use
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Affiliation(s)
- S R Heller
- Academic Unit of Diabetes, Endocrinology and Metabolism, University of Sheffield, Sheffield, UK
| | - B M Frier
- The Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - M L Hersløv
- Medical & Science, Novo Nordisk A/S, Søborg, Denmark
| | - J Gundgaard
- Health Economics & HTA, Novo Nordisk A/S, Søborg, Denmark
| | - S C L Gough
- Oxford Centre for Diabetes Endocrinology and Metabolism, Academic Health Science Network, NIHR Oxford Biomedical Research Centre, University of Oxford, Oxford, UK
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Elliott L, Fidler C, Ditchfield A, Stissing T. Hypoglycemia Event Rates: A Comparison Between Real-World Data and Randomized Controlled Trial Populations in Insulin-Treated Diabetes. Diabetes Ther 2016; 7:45-60. [PMID: 26886441 PMCID: PMC4801820 DOI: 10.1007/s13300-016-0157-z] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Indexed: 12/17/2022] Open
Abstract
INTRODUCTION Hypoglycemia is the most common adverse effect of diabetes therapy, particularly insulin treatment. Hypoglycemia is associated with considerable clinical and economic burden, and may be under-reported. The aim of this study was to com pare the frequency of hypoglycemic events reported in real-world settings with those reported in clinical trials. METHODS We conducted a structured literature review in PubMed to identify hypoglycemic event rates in patients with type 1 diabetes mellitus (T1DM) and insulin-treated type 2 diabetes mellitus (T2DM) from real-world data (RWD) and randomized controlled trials (RCTs). The search was restricted to English language, full-text publications from 2010 onwards, reporting on treatment of T1DM or T2DM with basal only, basal-bolus, or premix insulin. RESULTS The final dataset included 30 studies (11 RWD studies and 19 RCTs). Six studies (RWD, n = 2; RCT, n = 4) reported hypoglycemia event rates in people with T1DM. For all reported categories of hypoglycemia (severe, non-severe, and nocturnal), rates were consistently higher in RWD studies compared with RCTs. Twenty-five studies (RWD, n = 10; RCT, n = 15) reported hypoglycemia event rates in people with insulin-treated T2DM. For T2DM basal-oral therapy; the highest rates were observed in RWD studies, although there was an overlap with RCT rates. For basal-bolus therapy, there was considerable between-study variability but higher rates of severe and non-severe hypoglycemia were generally observed in RWD studies. For T2DM premix insulin, reported rates of hypoglycemia in RWD studies and RCTs were similar. CONCLUSION We found that higher rates of hypoglycemia are observed in real-world settings compared with clinical trial settings, although there is a large degree of overlap. Due to the inherent constraints of RCTs, they are likely to underestimate the burden of hypoglycemia in clinical practice. Further, high-quality RWD are needed to determine a more accurate incidence of hypoglycemia in clinical practice.
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Affiliation(s)
| | - Carrie Fidler
- DRG Abacus, 6 Talisman Business Centre, Bicester, Oxfordshire UK
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Sejling AS, Schouwenberg B, Faerch LH, Thorsteinsson B, de Galan BE, Pedersen-Bjergaard U. Association between hypoglycaemia and impaired hypoglycaemia awareness and mortality in people with Type 1 diabetes mellitus. Diabet Med 2016; 33:77-83. [PMID: 25997108 DOI: 10.1111/dme.12810] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/15/2015] [Indexed: 12/25/2022]
Abstract
AIMS To examine whether severe hypoglycaemia and impaired hypoglycaemic awareness, a principal predictor of severe hypoglycaemia, are associated with all-cause mortality or cardiovascular mortality in Type 1 diabetes mellitus. METHODS Mortality was recorded in two cohorts, one in Denmark (n = 269, follow-up 12 years) and one in the Netherlands (n = 482, follow-up 6.5 years). In both cohorts, awareness class was characterized and numbers of episodes of severe hypoglycaemia either during lifetime (Danish cohort) or during the preceding year (Dutch cohort) were recorded. In addition, episodes of severe hypoglycaemia were prospectively recorded every month for 1 year in the Danish cohort. Follow-up data regarding mortality were obtained through medical reports and registries (Danish cohort). RESULTS All-cause mortality was 14% (n = 39) in the Danish and 4% (n = 20) in the Dutch cohort. In either cohort, neither presence of episodes with severe hypoglycaemia nor impaired hypoglycaemia awareness were associated with increased mortality in age-truncated Cox proportional hazard regression models. Variables associated with increased risk of all-cause mortality in both cohorts were evidence of macrovascular disease and reduced kidney function. CONCLUSIONS Severe hypoglycaemia and hypoglycaemia unawareness are not associated with increased risk of all-cause or cardiovascular mortality in people with Type 1 diabetes mellitus.
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Affiliation(s)
- A-S Sejling
- Department of Cardiology, Nephrology and Endocrinology, Nordsjaellands University Hospital, Hillerød, Denmark
- Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark
| | - B Schouwenberg
- Department of Internal Medicine, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - L H Faerch
- Department of Cardiology, Nephrology and Endocrinology, Nordsjaellands University Hospital, Hillerød, Denmark
| | - B Thorsteinsson
- Department of Cardiology, Nephrology and Endocrinology, Nordsjaellands University Hospital, Hillerød, Denmark
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - B E de Galan
- Department of Internal Medicine, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - U Pedersen-Bjergaard
- Department of Cardiology, Nephrology and Endocrinology, Nordsjaellands University Hospital, Hillerød, Denmark
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Czech M, Rdzanek E, Pawęska J, Adamowicz-Sidor O, Niewada M, Jakubczyk M. Drug-related risk of severe hypoglycaemia in observational studies: a systematic review and meta-analysis. BMC Endocr Disord 2015; 15:57. [PMID: 26458540 PMCID: PMC4603823 DOI: 10.1186/s12902-015-0052-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Accepted: 09/30/2015] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Diabetes mellitus (DM) leads to multiple complications, including severe hypoglycaemia events (SHEs). SHEs can impact a patient's quality of life and compliance and may directly result in additional costs to the health care system. The aim of this review was to evaluate the risk of severe hypoglycaemia in patients with type 1 (T1) and 2 (T2) DM as observed in everyday clinical practice for various drug regimens. METHODS We conducted a systematic review of observational (retrospective or prospective) studies in the MEDLINE, Embase, and Cochrane Library databases that covered at least 100 children or adults with T1/T2 DM. In T1 DM, basal-bolus/pre-mix insulin (human or analogue) and insulin pump were reviewed, and in T2 DM, basal-bolus/pre-mix insulin (human or analogue), oral antidiabetic drugs supported with basal insulin (human or analogue), sulfonylureas in monotherapy, and combined oral treatment were reviewed. In order to estimate SHE rates, we extracted data on the time horizon of the study, number of patients, number of SHEs, and number of patients experiencing at least one SHE. We used a random effects model to estimate the annual SHE rate. We considered the risk for other antidiabetic medications in T2 DM to be negligible and the results of our main review yielded no observational data for premixes in T1 DM so they were assessed based on relative rates taken from additional systematic reviews. The study, being a desk research, did not involve any human subjects (including human material or human data) and no ethical committee approval was asked for. For the same reason there was no need to collect informed consent for participation in the study. RESULTS We identified 76 observational studies encompassing 707,722.30 patient-years. The estimated annual SHE rate varied from 0.168 (95 % CI 0.123-0.237) for insulin pump up to 1.628 for biphasic human insulin in T1 DM patients, and from 0.0035 for oral antidiabetic drugs up to 0.554 (95 % CI 0.157-7.534) for basal-bolus with human insulin in T2 DM patients. CONCLUSIONS Our review indicates that SHE rates differ between patients depending on treatment regimen. However, SHEs are also driven by other factors. Proper modelling techniques are needed to use various types of information in published studies.
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Affiliation(s)
- Marcin Czech
- Novo Nordisk Pharma sp. z o.o, Warsaw, Poland.
- Department of Pharmacoeconomics, Medical University of Warsaw, Warsaw, Poland.
- Business School, Warsaw University of Technology, Warsaw, Poland.
| | - Elżbieta Rdzanek
- HealthQuest spółka z ograniczoną odpowiedzialnością Sp. K, Warsaw, Poland.
| | - Justyna Pawęska
- HealthQuest spółka z ograniczoną odpowiedzialnością Sp. K, Warsaw, Poland.
| | | | - Maciej Niewada
- Department of Experimental and Clinical Pharmacology, Medical University of Warsaw, Warsaw, Poland.
| | - Michał Jakubczyk
- Decision Analysis and Support Unit, Warsaw School of Economics, Al. Niepodległości 162, 02-554, Warsaw, Poland.
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Bonaventura A, Montecucco F, Dallegri F. Update on strategies limiting iatrogenic hypoglycemia. Endocr Connect 2015; 4:R37-45. [PMID: 26099256 PMCID: PMC4512278 DOI: 10.1530/ec-15-0044] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 06/19/2015] [Indexed: 12/17/2022]
Abstract
The prevalence of type 2 diabetes mellitus (T2DM) is increasing all over the world. Targeting good glycemic control is fundamental to avoid the complications of diabetes linked to hyperglycemia. This narrative review is based on material searched for and obtained via PubMed up to April 2015. The search terms we used were: 'hypoglycemia, diabetes, complications' in combination with 'iatrogenic, treatment, symptoms.' Serious complications might occur from an inappropriate treatment of hyperglycemia. The most frequent complication is iatrogenic hypoglycemia that is often associated with autonomic and neuroglycopenic symptoms. Furthermore, hypoglycemia causes acute cardiovascular effects, which may explain some of the typical symptoms: ischemia, QT prolongation, and arrhythmia. With regards to the latter, the night represents a dangerous period because of the major increase in arrhythmias and the prolonged period of hypoglycemia; indeed, sleep has been shown to blunt the sympatho-adrenal response to hypoglycemia. Two main strategies have been implemented to reduce these effects: monitoring blood glucose values and individualized HbA1c goals. Several drugs for the treatment of T2DM are currently available and different combinations have been recommended to achieve individualized glycemic targets, considering age, comorbidities, disease duration, and life expectancy. In conclusion, according to international guidelines, hypoglycemia-avoiding therapy must reach an individualized glycemic goal, which is the lowest HbA1c not causing severe hypoglycemia and preserving awareness of hypoglycemia.
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Affiliation(s)
- Aldo Bonaventura
- Department of Internal MedicineFirst Clinic of Internal Medicine, University of Genoa School of Medicine, IRCCS Azienda Ospedaliera Universitaria San Martino - IST Istituto Nazionale per la Ricerca sul Cancro, Genoa, ItalyDivision of CardiologyFoundation for Medical Researches, Department of Medical Specialties, University of Geneva, Geneva, SwitzerlandDivision of Laboratory MedicineDepartment of Genetics and Laboratory Medicine, Geneva University Hospitals, 4 rue Gabrielle-Perret-Gentil, Avenue de la Roseraie 64, 1205 Geneva, Switzerland
| | - Fabrizio Montecucco
- Department of Internal MedicineFirst Clinic of Internal Medicine, University of Genoa School of Medicine, IRCCS Azienda Ospedaliera Universitaria San Martino - IST Istituto Nazionale per la Ricerca sul Cancro, Genoa, ItalyDivision of CardiologyFoundation for Medical Researches, Department of Medical Specialties, University of Geneva, Geneva, SwitzerlandDivision of Laboratory MedicineDepartment of Genetics and Laboratory Medicine, Geneva University Hospitals, 4 rue Gabrielle-Perret-Gentil, Avenue de la Roseraie 64, 1205 Geneva, Switzerland Department of Internal MedicineFirst Clinic of Internal Medicine, University of Genoa School of Medicine, IRCCS Azienda Ospedaliera Universitaria San Martino - IST Istituto Nazionale per la Ricerca sul Cancro, Genoa, ItalyDivision of CardiologyFoundation for Medical Researches, Department of Medical Specialties, University of Geneva, Geneva, SwitzerlandDivision of Laboratory MedicineDepartment of Genetics and Laboratory Medicine, Geneva University Hospitals, 4 rue Gabrielle-Perret-Gentil, Avenue de la Roseraie 64, 1205 Geneva, Switzerland Department of Internal MedicineFirst Clinic of Internal Medicine, University of Genoa School of Medicine, IRCCS Azienda Ospedaliera Universitaria San Martino - IST Istituto Nazionale per la Ricerca sul Cancro, Genoa, ItalyDivision of CardiologyFoundation for Medical Researches, Department of Medical Specialties, University of Geneva, Geneva, SwitzerlandDivision of Laboratory MedicineDepartment of Genetics and Laboratory Medicine, Geneva University Hospitals, 4 rue Gabrielle-Perret-Gentil, Avenue de la Roseraie 64, 1205 Geneva, Switzerland
| | - Franco Dallegri
- Department of Internal MedicineFirst Clinic of Internal Medicine, University of Genoa School of Medicine, IRCCS Azienda Ospedaliera Universitaria San Martino - IST Istituto Nazionale per la Ricerca sul Cancro, Genoa, ItalyDivision of CardiologyFoundation for Medical Researches, Department of Medical Specialties, University of Geneva, Geneva, SwitzerlandDivision of Laboratory MedicineDepartment of Genetics and Laboratory Medicine, Geneva University Hospitals, 4 rue Gabrielle-Perret-Gentil, Avenue de la Roseraie 64, 1205 Geneva, Switzerland
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Dømgaard M, Bagger M, Rhee NA, Burton CM, Thorsteinsson B. Individual and societal consequences of hypoglycemia: A cross-sectional survey. Postgrad Med 2015; 127:438-45. [PMID: 25971530 DOI: 10.1080/00325481.2015.1045815] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
BACKGROUND Hypoglycemia and fear of hypoglycemia threaten individuals' ability to work and drive. We studied the effect of hypoglycemia on the individual and society, with a focus on possible implications of new European union legislation on patients' continued ability to drive. METHODS A cross-sectional survey of Danish Diabetes Association members was conducted to investigate individual and societal consequences of hypoglycemia. RESULTS A total of 3117/9951 individuals with type 1 diabetes (T1DM) (32.2%) or type 2 diabetes (T2DM) (67.8%) completed the survey. The calculated incidence rates of self-reported severe and mild hypoglycemia were 2.9, 0.6 and 0.1 events per patient year (ppy) in patients with T1DM, insulin using T2DM and non-insulin using T2DM, respectively; and incidence rates of self-reported mild hypoglycemia were 99.0, 23.2 and 10.9 events ppy, respectively. Self-care strategies to avoid hypoglycemia include maintaining higher blood glucose levels (45.7%) and reducing physical activity (15.7%). Few people take sick leave as a result of hypoglycemia, but prolonged mental recovery ≥4 h following an episode of mild or severe hypoglycemia was reported by 8.7 and 31.0%, respectively. 26.5% of patients holding a valid driving license reported having ever had at least one episode of severe hypoglycemia. Patients considering underreporting of hypoglycemia to maintain their driving license were more likely to have experienced severe hypoglycemia (odds ratio [OR]: 3.03; 95% CI: 2.42-3.79; p < 0.0001). CONCLUSION A high proportion of insulin-treated patients experience hypoglycemia resulting in fear of hypoglycemia and changes in self-care behavior that may compromise glycemic control. Many patients with a history of severe hypoglycemia consider underreporting hypoglycemic events through concern over retaining their driving license.
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Ogawa S, Nako K, Okamura M, Sakamoto T, Ito S. Stabilization of postprandial blood glucose fluctuations by addition of glucagon like polypeptide-analog administration to intensive insulin therapy. J Diabetes Investig 2015. [PMID: 26221522 PMCID: PMC4511303 DOI: 10.1111/jdi.12314] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Aims/Introduction The nature of the action of concomitant liraglutide to stabilize postprandial blood glucose level (PBG) in patients on intensive insulin therapy with unstable PBG remains unclear. The aim was to identify the nature of liraglutide's actions to stabilize PBGs. Materials and Methods The study participants consisted of 20 diabetes patients showing unstable PBGs after dinner despite undergoing intensive insulin therapy. The dose of bolus insulin was reduced by three units for each meal, and 0.9 mg/day of liraglutide was added and used in combination. We evaluated the participants' data after the first evaluation (immediately before using liraglutide in combination) and the second evaluation (16 weeks after starting concomitant therapy). PBGs after dinner were measured every day for a period of 28 days immediately before carrying out both evaluations. The mean value of the 28 sets of blood glucose data and their standard deviation (SD) values were established as PBGs after dinner, as well as the SD for each participant. The changes in the mean values of the 20 participants, as well as their SD between before and after concomitant therapy, were evaluated. Results The mean value of PBGs (12.0 ± 1.0 to 10.1 ± 0.9 mmol/L) and SD values (5.1 ± 0.7–3.5 ± 0.8) after dinner both declined. A multiple regression analysis showed that the combined use of liraglutide was a significant independent variable of the SD values of PBGs after dinner. Conclusion The treatment of reducing the dose of insulin and using liraglutide in combination not only suppresses PBGs, but also stabilizes their blood glucose fluctuations.
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Affiliation(s)
- Susumu Ogawa
- Division of Nephrology, Endocrinology and Vascular Medicine, Tohoku University Hospital Sendai, Japan ; Institute for Excellence in Higher Education, Division of Research in Student Support, Section of Clinical Medicine, Tohoku University Sendai, Japan
| | - Kazuhiro Nako
- Division of Nephrology, Endocrinology and Vascular Medicine, Tohoku University Hospital Sendai, Japan
| | - Masashi Okamura
- Division of Nephrology, Endocrinology and Vascular Medicine, Tohoku University Hospital Sendai, Japan
| | - Takuya Sakamoto
- Division of Nephrology, Endocrinology and Vascular Medicine, Tohoku University Hospital Sendai, Japan
| | - Sadayoshi Ito
- Division of Nephrology, Endocrinology and Vascular Medicine, Tohoku University Hospital Sendai, Japan
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Pedersen-Bjergaard U, Færch L, Allingbjerg ML, Agesen R, Thorsteinsson B. The influence of new European Union driver's license legislation on reporting of severe hypoglycemia by patients with type 1 diabetes. Diabetes Care 2015; 38:29-33. [PMID: 25288675 DOI: 10.2337/dc14-1417] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE We test the hypotheses that the implementation in Denmark of new, stricter European Union (EU) legislation on driver's licensing, with the purpose to improve traffic safety in January 2012, has reduced the self-reported rate of severe hypoglycemia in a routine clinical setting and that anonymous reporting results in higher event rates. RESEARCH DESIGN AND METHODS A cohort of 309 patients with type 1 diabetes was recruited in the outpatient clinic at Nordsjællands University Hospital Hillerød, Denmark. Yearly numbers of severe hypoglycemic events defined by need for treatment assistance from another person were retrieved from medical records in the years 2010 to 2012 and retrospectively reported in an anonymous questionnaire. Data from medical records in 2012 were compared with those from 2010 and 2011 and with data from the questionnaire. RESULTS Reported rates of severe hypoglycemia in the medical records were reduced by 55% in 2012 compared with the prior years (P = 0.034). The proportion of subjects reporting recurrent episodes was grossly reduced from 5.6 to 1.5% (P = 0.014). Compared with anonymous reporting in the questionnaire, the rate of severe hypoglycemia in 2012 was 70% lower (P < 0.001). CONCLUSIONS Reporting of severe hypoglycemia by patients with type 1 diabetes is significantly reduced following implementation of EU driver's licensing legislation that implies withdrawal of driver's licensing in case of recurrent episodes within 1 year. The resulting burden of concealed severe hypoglycemia may impair the safety of affected patients and unintentionally paradoxically reduce the general traffic safety.
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Affiliation(s)
- Ulrik Pedersen-Bjergaard
- Department of Cardiology, Nephrology, and Endocrinology, Nordsjællands Hospital Hillerød, Hillerød, Denmark Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Louise Færch
- Department of Cardiology, Nephrology, and Endocrinology, Nordsjællands Hospital Hillerød, Hillerød, Denmark
| | - Marie-Louise Allingbjerg
- Department of Cardiology, Nephrology, and Endocrinology, Nordsjællands Hospital Hillerød, Hillerød, Denmark
| | - Rikke Agesen
- Department of Cardiology, Nephrology, and Endocrinology, Nordsjællands Hospital Hillerød, Hillerød, Denmark Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Birger Thorsteinsson
- Department of Cardiology, Nephrology, and Endocrinology, Nordsjællands Hospital Hillerød, Hillerød, Denmark Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Abstract
Hypoglycaemia is a frequent adverse effect of treatment of diabetes mellitus with insulin and sulphonylureas. Fear of hypoglycaemia alters self-management of diabetes mellitus and prevents optimal glycaemic control. Mild (self-treated) and severe (requiring help) hypoglycaemia episodes are more common in type 1 diabetes mellitus but people with insulin-treated type 2 diabetes mellitus are also exposed to frequent hypoglycaemic events, many of which occur during sleep. Hypoglycaemia can disrupt many everyday activities such as driving, work performance and leisure pursuits. In addition to accidents and physical injury, the morbidity of hypoglycaemia involves the cardiovascular and central nervous systems. Whereas coma and seizures are well-recognized neurological sequelae of hypoglycaemia, much interest is currently focused on the potential for hypoglycaemia to cause dangerous and life-threatening cardiac complications, such as arrhythmias and myocardial ischaemia, and whether recurrent severe hypoglycaemia can cause permanent cognitive impairment or promote cognitive decline and accelerate the onset of dementia in middle-aged and elderly people with diabetes mellitus. Prevention of hypoglycaemia is an important part of diabetes mellitus management and strategies include patient education, glucose monitoring, appropriate adjustment of diet and medications in relation to everyday circumstances including physical exercise, and the application of new technologies such as real-time continuous glucose monitoring, modified insulin pumps and the artificial pancreas.
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Affiliation(s)
- Brian M Frier
- BHF Centre for Cardiovascular Science, The Queen's Medical Research Institute, University of Edinburgh, Edinburgh EH16 4TJ, UK
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Peene B, D'Hooge D, Vandebrouck T, Mathieu C. Patient-reported frequency, awareness and patient-physician communication of hypoglycaemia in Belgium. Acta Clin Belg 2014; 69:439-45. [PMID: 25212241 DOI: 10.1179/2295333714y.0000000050] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
OBJECTIVES Limited data exist on the frequency of non-severe hypoglycaemic events in patients with insulin-treated diabetes outside of clinical trial settings. Our study investigated the rates of self-reported non-severe events in a sample of Belgian patients. We also investigated self-reported awareness of the symptoms of hypoglycaemia and communication about hypoglycaemia between patients and their physicians. METHODS Patients aged >15 years with Type 1 (T1DM) and insulin-treated Type 2 (T2DM) diabetes were recruited via existing panels in Belgium to complete four questionnaires at weekly intervals. In addition to demographics, data on frequency of non-severe hypoglycaemic events (7-day recall), severe hypoglycaemic events (1-year recall), awareness of hypoglycaemia and reporting of hypoglycaemia to physicians were recorded. RESULTS In total, 412 patients (44% T1DM, 56% T2DM) completed 1148 patient-week records. Mean insulin-treatment duration was 11 years, mean HbA(1c) 7·7%. Mean reported non-severe hypoglycaemic events per patient-week were 2·3 in T1DM patients, 0·3 in T2DM patients receiving basal-only therapy, 0·7 in T2DM patients receiving basal-bolus therapy and 0·8 in T2DM patients receiving another form of insulin. Mean reported annual frequencies of severe hypoglycaemic events were 0·9 in T1DM and 0·4 in T2DM. Impaired awareness or unawareness of hypoglycaemia was reported by 70% of T1DM patients, 55% of T2DM patients receiving basal-only therapy, 61% of T2DM patients receiving basal-bolus therapy and 73% of T2DM patients receiving another form of insulin. Overall, 60% of T1DM patients and 46% of T2DM patients rarely/never discuss hypoglycaemia with their GP/specialist. In addition, 10% of T1DM patients and 13% of T2DM patients stated that GPs/specialists did not ask them about their hypoglycaemia in routine appointments. CONCLUSION Hypoglycaemic events and unawareness of these events are common in Belgian insulin-treated diabetes patients. Patients often fail to report hypoglycaemic events to their physician and many physicians do not inquire about hypoglycaemia, meaning the current burden of hypoglycaemic events may be underestimated.
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Self-reported frequency and impact of hypoglycaemic events in insulin-treated diabetic patients in Austria. Wien Klin Wochenschr 2014; 127:36-44. [PMID: 25421366 PMCID: PMC4306728 DOI: 10.1007/s00508-014-0626-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Accepted: 09/28/2014] [Indexed: 01/26/2023]
Abstract
Background Hypoglycaemia is a common side effect of insulin therapy and presents a barrier to diabetes management, however, limited data exist on the real-world frequency of events. We investigated the self-reported rates of non-severe and severe hypoglycaemic events in Austria. We also explored hypoglycaemia awareness, patient–physician communication and the health-related and economic impact of events. Methods People with Type-1 or insulin-treated Type-2 diabetes > 15 years of age completed up to 4 questionnaires (weekly intervals). Non-severe hypoglycaemic events were defined by requiring no assistance while severe hypoglycaemic events need help from a third party. Results Overall, 553 respondents (40 % Type-1, 60 % Type-2) enrolled, providing a total of 1,773 patient-weeks. The mean annual non-severe event frequencies were 85 for Type-1 and 15–28 for Type-2 (depending on insulin regimen). In respondents who experienced ≥ 1 non-severe event in the study period, annual rates were 18 % higher in Type-1 and 77 % higher in Type-2. The proportion of respondents reporting ‘awareness’ of hypoglycaemic symptoms was 48 % for Type-1 and 43–61 % for Type-2 respondents. The proportion of respondents who rarely/never inform their physician of hypoglycaemic events was 67 % (Type-1) and 43–53 % (Type-2). The most commonly reported health-related impacts were tiredness/fatigue (58 % of events) and reduced alertness (41 % of events). Conclusion Non-severe hypoglycaemic events are common in Type-1 and insulin-treated Type-2 diabetes patients in Austria. There may be subgroups of patients who are predisposed to higher rates of non-severe events. Even non-severe events have a negative impact on physical and emotional well-being.
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Pedersen-Bjergaard U, Kristensen PL, Beck-Nielsen H, Nørgaard K, Perrild H, Christiansen JS, Jensen T, Hougaard P, Parving HH, Thorsteinsson B, Tarnow L. Effect of insulin analogues on risk of severe hypoglycaemia in patients with type 1 diabetes prone to recurrent severe hypoglycaemia (HypoAna trial): a prospective, randomised, open-label, blinded-endpoint crossover trial. Lancet Diabetes Endocrinol 2014; 2:553-61. [PMID: 24794703 DOI: 10.1016/s2213-8587(14)70073-7] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Insulin analogues have been developed to reduce the risk of hypoglycaemia in patients with diabetes who require insulin-based treatment, but their effect on this endpoint in patients with type 1 diabetes complicated by recurrent severe hypoglycaemia is unknown. We compared the occurrence of severe hypoglycaemic episodes in such patients during treatment with insulin analogues or human insulin. METHODS In this investigator-initiated, prospective, randomised, open-label, blinded-endpoint crossover trial at seven medical centres in Denmark, we recruited patients (aged ≥18 years) with type 1 diabetes (diagnosed for >5 years) who had reported two or more episodes of severe hypoglycaemia in the preceding year. Patients were randomly assigned (1:1) using computer-generated site-specific randomisation lists in blocks of four to treatment with basal-bolus therapy with either analogue insulin (detemir and aspart) or human insulin (human neutral protamine Hagedorn and human regular) in a balanced crossover design. A 1-year plus 1-year treatment period was specified, consisting of two 3-month run-in periods, each followed by a 9-month maintenance period. The primary endpoint was the number of validated episodes of severe hypoglycaemia (defined by need for treatment assistance from others) reported during the maintenance periods, analysed by intention to treat. The study is registered with ClinicalTrials.gov, number NCT00346996. FINDINGS Between May 9, 2007, and Oct 30, 2009, 159 patients were randomly assigned. 18 patients discontinued during the first run-in period, leaving 141 patients in the intention-to-treat population. 136 severe hypoglycaemic episodes were reported during treatment with human insulin and 105 episodes were reported during treatment with insulin analogues, resulting in an absolute rate reduction of 0.51 episodes (95% CI 0.19-0.84) per patient-year with insulin analogues. This result corresponds to a relative rate reduction of 29% (95% CI 11-48; p=0.010). INTERPRETATION Treatment with insulin detemir and aspart in patients with type 1 diabetes and recurrent severe hypoglycaemia resulted in a clinically significant reduced rate of severe hypoglycaemia compared with human insulin. Patients with the greatest chance of benefitting from improved insulin therapy should be offered treatment with insulin analogues and be included in future trials of new insulins. FUNDING Novo Nordisk A/S.
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Affiliation(s)
- Ulrik Pedersen-Bjergaard
- Nordsjællands University Hospital-Hillerød, Hillerød, Denmark; University of Copenhagen, Copenhagen, Denmark.
| | - Peter Lommer Kristensen
- Nordsjællands University Hospital-Hillerød, Hillerød, Denmark; Steno Diabetes Center, Gentofte, Denmark
| | - Henning Beck-Nielsen
- Odense University Hospital, Odense, Denmark; University of Southern Denmark, Odense, Denmark
| | | | - Hans Perrild
- Bispebjerg University Hospital, Copenhagen, Denmark
| | | | - Tonny Jensen
- Copenhagen University Hospital (Rigshospitalet), Copenhagen, Denmark
| | | | - Hans-Henrik Parving
- University of Aarhus, Aarhus, Denmark; Copenhagen University Hospital (Rigshospitalet), Copenhagen, Denmark
| | - Birger Thorsteinsson
- Nordsjællands University Hospital-Hillerød, Hillerød, Denmark; University of Copenhagen, Copenhagen, Denmark
| | - Lise Tarnow
- Nordsjællands University Hospital-Hillerød, Hillerød, Denmark; Steno Diabetes Center, Gentofte, Denmark; University of Aarhus, Aarhus, Denmark
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Orozco-Beltrán D, Mezquita-Raya P, Ramírez de Arellano A, Galán M. Self-reported frequency and impact of hypoglycemic events in Spain. Diabetes Ther 2014; 5:155-68. [PMID: 24515748 PMCID: PMC4065286 DOI: 10.1007/s13300-014-0057-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION Hypoglycemia is a common side effect of insulin therapy and has negative implications for quality of life and healthcare resources. The authors investigated the self-reported frequency of non-severe and severe hypoglycemic events (NSHEs and SHEs), hypoglycemia awareness, patient-physician communication, health-related effects and economic impact on people with insulin-treated diabetes (Type-1 and Type-2) in Spain. METHODS People with Type-1 (T1DM) or insulin-treated Type-2 (T2DM) diabetes older than 15 years of age completed up to 4 questionnaires at weekly intervals. NSHE was an event which respondents could manage without assistance. SHE needed help from a third party to manage. RESULTS In total, 630 respondents completed questionnaires covering 2,235 weeks. Mean self-reported NSHEs per respondent-week were 1.7 (T1DM) and 0.4-0.8 (T2DM). Impaired hypoglycemia awareness or unawareness was reported by 55% of T1DM and 39% of T2DM respondents. Overall, 31% of T1DM and 20% of T2DM respondents rarely/never informed their physician about NSHEs. Respondents reported feeling tired/fatigued after 67% of NSHE and less alert after 45% of NSHE. Over the week following an NSHE, blood glucose measurement test-strip use increased by 5.3 (mean). In employed respondents (43%), 18% of NSHEs were reported to lead to lost work time (mean 1.5 h per event). After an SHE, 49% of respondents required emergency visits and/or hospital admission. CONCLUSION NSHE are a common occurrence with T1DM and insulin-treated T2DM in Spain and are associated with a cost burden and negative impact on well-being. Patient-physician communication is higher in Spain than Europe overall; however, many patients expressed reluctance to discuss their hypoglycemia.
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Peterman S, Niederkofler EE, Phillips DA, Krastins B, Kiernan UA, Tubbs KA, Nedelkov D, Prakash A, Vogelsang MS, Schoeder T, Couchman L, Taylor DR, Moniz CF, Vadali G, Byram G, Lopez MF. An automated, high-throughput method for targeted quantification of intact insulin and its therapeutic analogs in human serum or plasma coupling mass spectrometric immunoassay with high resolution and accurate mass detection (MSIA-HR/AM). Proteomics 2014; 14:1445-56. [DOI: 10.1002/pmic.201300300] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 01/08/2014] [Accepted: 03/24/2014] [Indexed: 11/09/2022]
Affiliation(s)
| | | | | | | | | | | | | | - Amol Prakash
- Thermo Fisher Scientific; BRIMS; Cambridge MA USA
| | | | | | - Lewis Couchman
- Department of Clinical Biochemistry; King's College Hospital NHS Foundation Trust; London UK
| | - David R. Taylor
- Department of Clinical Biochemistry; King's College Hospital NHS Foundation Trust; London UK
| | - Cajetan F. Moniz
- Department of Clinical Biochemistry; King's College Hospital NHS Foundation Trust; London UK
| | - Gouri Vadali
- Thermo Fisher Scientific; BRIMS; Cambridge MA USA
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Hendrieckx C, Halliday JA, Bowden JP, Colman PG, Cohen N, Jenkins A, Speight J. Severe hypoglycaemia and its association with psychological well-being in Australian adults with type 1 diabetes attending specialist tertiary clinics. Diabetes Res Clin Pract 2014; 103:430-6. [PMID: 24513121 DOI: 10.1016/j.diabres.2013.12.005] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 10/10/2013] [Accepted: 12/18/2013] [Indexed: 11/22/2022]
Abstract
AIM To investigate severe hypoglycaemia (SH) in adults with type 1 diabetes and its associations with impaired awareness of hypoglycaemia (IAH), clinical, psychological and socio-demographic factors. METHODS Attendees of three specialist diabetes clinics in Melbourne, Australia completed questions about frequency of SH in the past six months; impaired awareness of hypoglycaemia (Gold score); and measures of general emotional well-being (WHO-5), diabetes-specific positive well-being (subscale of W-BQ28), diabetes-related distress (PAID) and fear of hypoglycaemia (HFS). RESULTS Of 422 participants (mean ± SD age 37.5 ± 15.0 years; 54% women), 78 (18.5%) reported at least one SH event and 86 (20.5%) had IAH. SH and IAH frequencies were similar at all clinics. In total, 194 SH events were reported, with 10 people experiencing 40% of events. Compared with those without SH, participants with SH had longer diabetes duration, were younger at diabetes onset and more likely to have IAH (p<0.01). Those with SH had greater fear of hypoglycaemia and diabetes-related distress, poorer general emotional well-being, and lower diabetes-specific positive well-being, (p<0.01). There were no associations with age, gender, insulin regimen or HbA1c. CONCLUSIONS This study has identified that SH and IAH in Australian adults with type 1 diabetes exist at similar levels to those reported in US and European research. SH was significantly associated with IAH and fear of hypoglycaemia. Assessment of hypoglycaemia, IAH and psychological well-being as part of a routine diabetes clinic visit was well accepted by attendees and enabled identification of those who may benefit from medical, educational or therapeutic interventions.
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Affiliation(s)
- C Hendrieckx
- The Australian Centre for Behavioural Research in Diabetes, Diabetes Australia-Vic, 570 Elizabeth Street, Melbourne, VIC, Australia; Centre for Mental Health and Well-being Research, School of Psychology, Deakin University, Burwood, VIC, Australia.
| | - J A Halliday
- The Australian Centre for Behavioural Research in Diabetes, Diabetes Australia-Vic, 570 Elizabeth Street, Melbourne, VIC, Australia; Centre for Mental Health and Well-being Research, School of Psychology, Deakin University, Burwood, VIC, Australia
| | - J P Bowden
- Department of Diabetes and Endocrinology, Royal Melbourne Hospital, Melbourne, VIC, Australia
| | - P G Colman
- Department of Diabetes and Endocrinology, Royal Melbourne Hospital, Melbourne, VIC, Australia
| | - N Cohen
- Baker IDI Heart and Diabetes Institute, Melbourne, VIC, Australia
| | - A Jenkins
- University of Melbourne, Department of Medicine, St Vincent's Hospital, Melbourne, VIC, Australia
| | - J Speight
- The Australian Centre for Behavioural Research in Diabetes, Diabetes Australia-Vic, 570 Elizabeth Street, Melbourne, VIC, Australia; Centre for Mental Health and Well-being Research, School of Psychology, Deakin University, Burwood, VIC, Australia; AHP Research, Hornchurch, Essex, UK
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Östenson CG, Geelhoed-Duijvestijn P, Lahtela J, Weitgasser R, Markert Jensen M, Pedersen-Bjergaard U. Self-reported non-severe hypoglycaemic events in Europe. Diabet Med 2014; 31:92-101. [PMID: 23796113 PMCID: PMC4232857 DOI: 10.1111/dme.12261] [Citation(s) in RCA: 129] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/18/2013] [Indexed: 11/29/2022]
Abstract
AIMS Hypoglycaemia presents a barrier to optimum diabetes management but data are limited on the frequency of hypoglycaemia incidents outside of clinical trials. The present study investigated the rates of self-reported non-severe hypoglycaemic events, hypoglycaemia awareness and physician discussion of events in people with Type 1 diabetes mellitus or insulin-treated Type 2 diabetes mellitus. METHODS People in seven European countries aged >15 years with Type 1 diabetes or insulin-treated Type 2 diabetes (basal-only, basal-bolus and other insulin regimens) were recruited via consumer panels, nurses, telephone recruitment and family referrals. Respondents completed four online questionnaires. The first questionnaire collected background information on demographics and hypoglycaemia-related behaviour, whilst all four questionnaires collected data on non-severe hypoglycaemic events in the preceding 7 days. RESULTS Analysis was based on 11 440 respondent-weeks from 3827 respondents. All participants completed the first questionnaire and 57% completed all four. The mean number of events/respondent-week was 1.8 (Type 1 diabetes) and 0.4-0.7 (Type 2 diabetes, with different insulin treatments) corresponding to annual event rates of 94 and 21-36, respectively. A total of 63% of respondents with Type 1 diabetes and 49-64% of respondents with Type 2 diabetes, treated with different insulin regimens, who experienced hypoglycaemic events, reported impaired hypoglycaemia awareness or unawareness. A high proportion of respondents rarely or never informed their general practitioner/specialist about hypoglycaemia: 65% (Type 1 diabetes) and 50-59% (Type 2 diabetes). Overall, 16% of respondents with Type 1 diabetes and 26% of respondents with Type 2 diabetes reported not being asked about hypoglycaemia during routine appointments. CONCLUSION Non-severe hypoglycaemic events are common amongst people with Type 1 diabetes and insulin-treated Type 2 diabetes in real-world settings. Many rarely or never inform their general practitioner/specialist about their hypoglycaemia and the real burden of hypoglycaemia may be underestimated.
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Affiliation(s)
- C G Östenson
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
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Ringholm L, Secher AL, Pedersen-Bjergaard U, Thorsteinsson B, Andersen HU, Damm P, Mathiesen ER. The incidence of severe hypoglycaemia in pregnant women with type 1 diabetes mellitus can be reduced with unchanged HbA1c levels and pregnancy outcomes in a routine care setting. Diabetes Res Clin Pract 2013; 101:123-30. [PMID: 23820486 DOI: 10.1016/j.diabres.2013.06.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2013] [Revised: 05/22/2013] [Accepted: 06/06/2013] [Indexed: 01/28/2023]
Abstract
AIMS To investigate whether the incidence of severe hypoglycaemia in pregnant women with type 1 diabetes can be reduced without deteriorating HbA1c levels or pregnancy outcomes in a routine care setting. METHODS Two cohorts (2004-2006; n=108 and 2009-2011; n=104) were compared. In between the cohorts a focused intervention including education of caregivers and patients in preventing hypoglycaemia was implemented. Women were included at median 8 (range 5-13) weeks. Severe hypoglycaemia (requiring assistance from others) was prospectively reported in structured interviews. RESULTS In the first vs. second cohort, severe hypoglycaemia during pregnancy occurred in 45% vs. 23%, p=0.0006, corresponding to incidences of 2.5 vs. 1.6 events/patient-year, p=0.04. Unconsciousness and/or convulsions occurred at 24% vs. 8% of events. Glucagon and/or glucose injections were given at 15% vs. 5% of events. At inclusion HbA1c was comparable between the cohorts while in the second cohort fewer women reported impaired hypoglycaemia awareness (56% vs. 36%, p=0.0006), insulin dose in women on multiple daily injections was lower (0.77 IU/kg (0.4-1.7) vs. 0.65 (0.2-1.4), p=0.0006) and more women were on insulin analogues (rapid-acting 44% vs. 97%, p<0.0001; long-acting 6% vs. 76%, p<0.0001) and insulin pumps (5% vs. 23%, p<0.0001). Pregnancy outcomes were similar in the two cohorts. CONCLUSIONS A 36% reduction in the incidence of severe hypoglycaemia in pregnancy with unchanged HbA1c levels and pregnancy outcomes was observed after implementation of focused intervention against severe hypoglycaemia in a routine care setting. Improved insulin treatment, increased health professional education and fewer women with impaired hypoglycaemia awareness may contribute.
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Affiliation(s)
- Lene Ringholm
- Center for Pregnant Women with Diabetes, Rigshospitalet, Denmark.
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Bay C, Kristensen PL, Pedersen-Bjergaard U, Tarnow L, Thorsteinsson B. Nocturnal continuous glucose monitoring: accuracy and reliability of hypoglycemia detection in patients with type 1 diabetes at high risk of severe hypoglycemia. Diabetes Technol Ther 2013; 15:371-7. [PMID: 23537420 DOI: 10.1089/dia.2013.0004] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
BACKGROUND A reliable method to detect biochemical nocturnal hypoglycemia is highly needed, especially in patients with recurrent severe hypoglycemia. We evaluated reliability of nocturnal continuous glucose monitoring (CGM) in patients with type 1 diabetes at high risk of severe hypoglycemia. PATIENTS AND METHODS Seventy-two type 1 diabetes patients with recurrent severe hypoglycemia (two or more events within the last year) participated for 4 nights in blinded CGM recordings (Guardian(®) REAL-Time CGMS and Sof-Sensor(®); Medtronic MiniMed, Northridge, CA). Blood was drawn hourly from 23:00 to 07:00 h for plasma glucose (PG) measurements (gold standard). RESULTS Valid data were obtained in 217 nights. The sensitivity of CGM was 65% (95% confidence interval, 53-77%) below 4 mmol/L, 40% (24-56%) below 3 mmol/L, and 17% (0-47%) below 2.2 mmol/L. PG and CGM readings correlated in the total measurement range (Spearman's ρ=0.82; P<0.001). In the normo- and hyperglycemic ranges CGM underestimated PG by 1.1 mmol/L (0.9-1.2 mmol/L) (P<0.001); in contrast, in the hypoglycemic range (PG<4 mmol/L) CGM overestimated PG levels by 1.0 mmol/L (P<0.001). The mean absolute relative differences in the hypo- (≤3.9 mmol/L), normo- (4-9.9 mmol/L), and hyperglycemic (≥10 mmol/L) ranges were 45% (37-53%), 23% (22-25%), and 20% (19-21%), respectively. Continuous glucose error grid analysis indicated a clinical accuracy of 56%, 99%, and 93% in the hypo-, normo-, and hyperglycemic ranges, respectively. CONCLUSIONS The accuracy in the hypoglycemic range of nocturnal CGM data using Sof-Sensor is suboptimal in type 1 diabetes patients at high risk of severe hypoglycemia. To ensure clinical useful sensitivity in detection of nocturnal hypoglycemic episodes, an alarm threshold should not be lower than 4 mmol/L.
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Affiliation(s)
- Christiane Bay
- Endocrinology Section, Department of Cardiology, Nephrology and Endocrinology, Hillerød Hospital, Hillerød, Denmark.
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Kristensen PL, Pedersen-Bjergaard U, Kjær TW, Olsen NV, Dela F, Holst JJ, Faber J, Tarnow L, Thorsteinsson B. Influence of erythropoietin on cognitive performance during experimental hypoglycemia in patients with type 1 diabetes mellitus: a randomized cross-over trial. PLoS One 2013; 8:e59672. [PMID: 23577069 PMCID: PMC3618268 DOI: 10.1371/journal.pone.0059672] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2012] [Accepted: 02/16/2013] [Indexed: 12/23/2022] Open
Abstract
Introduction The incidence of severe hypoglycemia in type 1 diabetes has not decreased over the past decades. New treatment modalities minimizing the risk of hypoglycemic episodes and attenuating hypoglycemic cognitive dysfunction are needed. We studied if treatment with the neuroprotective hormone erythropoietin (EPO) enhances cognitive function during hypoglycemia. Materials and Methods Eleven patients with type 1 diabetes, hypoglycemia unawareness and recurrent severe hypoglycemia completed the study. In a double-blind, randomized, balanced, cross-over study using clamped hypoglycemia they were treated with 40,000 IU of EPO or placebo administered intravenously six days before the two experiments. Cognitive function (primary endpoint), hypoglycemic symptoms, and counter-regulatory hormonal response were recorded. Results Compared with placebo, EPO treatment was associated with a significant reduction in errors in the most complex reaction time task (−4.7 (−8.1 to −1.3), p = 0.01) and a less reaction time prolongation (−66 (−117 to −16) msec, p = 0.02). EPO treatment did not change performance in other measures of cognition. Hypoglycemic symptoms, EEG-changes, and counter-regulatory hormone concentrations did not differ between EPO and placebo treatment. Conclusion In patients with type 1 diabetes and hypoglycemia unawareness, treatment with EPO is associated with a beneficial effect on cognitive function in a complex reaction time task assessing sustained attention/working memory. Hypoglycemic symptoms and hormonal responses were not changed by EPO treatment. Trial Registration ClinicalTrials.gov NCT00615368
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Affiliation(s)
- Peter Lommer Kristensen
- Endocrinology Section, Department of Cardiology, Nephrology and Endocrinology, Hillerød Hospital, Hillerød, Denmark.
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Kristensen PL, Pedersen-Bjergaard U, Beck-Nielsen H, Nørgaard K, Perrild H, Christiansen JS, Jensen T, Parving HH, Thorsteinsson B, Tarnow L. A prospective randomised cross-over study of the effect of insulin analogues and human insulin on the frequency of severe hypoglycaemia in patients with type 1 diabetes and recurrent hypoglycaemia (the HypoAna trial): study rationale and design. BMC Endocr Disord 2012; 12:10. [PMID: 22727048 PMCID: PMC3433358 DOI: 10.1186/1472-6823-12-10] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Accepted: 06/13/2012] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Severe hypoglycaemia still represents a significant problem in insulin-treated diabetes. Most patients do not experience severe hypoglycaemia often. However, 20% of patients with type 1 diabetes experience recurrent severe hypoglycaemia corresponding to at least two episodes per year. The effect of insulin analogues on glycaemic control has been documented in large trials, while their effect on the frequency of severe hypoglycaemia is less clear, especially in patients with recurrent severe hypoglycaemia. The HypoAna Trial is designed to investigate whether short-acting and long-acting insulin analogues in comparison with human insulin are superior in reducing the occurrence of severe hypoglycaemic episodes in patients with recurrent hypoglycaemia. This paper reports the study design of the HypoAna Trial. METHODS/DESIGN The study is a Danish two-year investigator-initiated, prospective, randomised, open, blinded endpoint (PROBE), multicentre, cross-over trial investigating the effect of insulin analogues versus human insulin on the frequency of severe hypoglycaemia in subjects with type 1 diabetes. Patients are randomised to treatment with basal-bolus therapy with insulin detemir / insulin aspart or human NPH insulin / human regular insulin in random order. The major inclusion criterion is history of two or more episodes of severe hypoglycaemia in the preceding year. DISCUSSION In contrast to almost all other studies in this field the HypoAna Trial includes only patients with major problems with hypoglycaemia. The HypoAna Trial will elucidate whether basal-bolus regimen with short-acting and long-acting insulin analogues in comparison with human insulin are superior in reducing occurrence of severe hypoglycaemic episodes in hypoglycaemia prone patients with type 1 diabetes. http://www.clinicaltrials.gov: NCT00346996.
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Affiliation(s)
- Peter Lommer Kristensen
- Department of Cardiology, Nephrology and Endocrinology, Hillerød University Hospital, Dyrehavevej 29, DK-3400, Hillerød, Denmark
- Steno Diabetes Center, Gentofte, Denmark
| | - Ulrik Pedersen-Bjergaard
- Department of Cardiology, Nephrology and Endocrinology, Hillerød University Hospital, Dyrehavevej 29, DK-3400, Hillerød, Denmark
| | - Henning Beck-Nielsen
- Department of Endocrinology M, Odense University Hospital, Odense, Denmark
- Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark
| | - Kirsten Nørgaard
- Department of Endocrinology, Hvidovre University Hospital, Hvidovre, Denmark
| | - Hans Perrild
- Department of Internal Medicine, Bispebjerg University Hospital, Copenhagen, Denmark
| | - Jens Sandahl Christiansen
- Department of Endocrinology M, Aarhus University Hospital, Aarhus, Denmark
- Faculty of Health Sciences, University of Aarhus, Aarhus, Denmark
| | - Tonny Jensen
- Department of Medical Endocrinology, Copenhagen University Hospital (Rigshospitalet), Copenhagen, Denmark
| | - Hans-Henrik Parving
- Department of Medical Endocrinology, Copenhagen University Hospital (Rigshospitalet), Copenhagen, Denmark
- Faculty of Health Sciences, University of Aarhus, Aarhus, Denmark
| | - Birger Thorsteinsson
- Department of Cardiology, Nephrology and Endocrinology, Hillerød University Hospital, Dyrehavevej 29, DK-3400, Hillerød, Denmark
- Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Lise Tarnow
- Steno Diabetes Center, Gentofte, Denmark
- Faculty of Health Sciences, University of Aarhus, Aarhus, Denmark
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