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Lin Y, Shen Y, He R, Wang Q, Deng H, Cheng S, Liu Y, Li Y, Lu X, Shen Z. A novel predictive model for optimizing diabetes screening in older adults. J Diabetes Investig 2024. [PMID: 38989799 DOI: 10.1111/jdi.14262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 05/10/2024] [Accepted: 06/16/2024] [Indexed: 07/12/2024] Open
Abstract
INTRODUCTION The fasting blood glucose test is widely used for diabetes screening. However, it may fail to detect early-stage diabetes characterized by elevated postprandial glucose levels. Hence, we developed and internally validated a nomogram to predict the diabetes risk in older adults with normal fasting glucose levels. MATERIALS AND METHODS This study enrolled 2,235 older adults, dividing them into a Training Set (n = 1,564) and a Validation Set (n = 671) based on a 7:3 ratio. We employed the least absolute shrinkage and selection operator regression to identify predictors for constructing the nomogram. Calibration and discrimination were employed to assess the nomogram's performance, while its clinical utility was evaluated through decision curve analysis. RESULTS Nine key variables were identified as significant factors: age, gender, body mass index, fasting blood glucose, triglycerides, alanine aminotransferase, the ratio of alanine aminotransferase to aspartate aminotransferase, blood urea nitrogen, and hemoglobin. The nomogram demonstrated good discrimination, with an area under the receiver operating characteristic curve of 0.824 in the Training Set and 0.809 in the Validation Set. Calibration curves for both sets confirmed the model's accuracy in estimating the actual diabetes risk. Decision curve analysis highlighted the model's clinical utility. CONCLUSIONS We provided a dynamic nomogram for identifying older adults at risk of diabetes, potentially enhancing the efficiency of diabetes screening in primary healthcare units.
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Affiliation(s)
- Yushuang Lin
- Department of Geriatrics, Sir Run Run Hospital, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Ya Shen
- Department of Integrated Service and Management, Jiangsu Province Center for Disease Control and Prevention, Nanjing, Jiangsu Province, China
| | - Rongbo He
- Department of Endocrinology, Sir Run Run Hospital, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Quan Wang
- Department of Geriatrics, Sir Run Run Hospital, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Hongbin Deng
- Medical School of Nanjing University, Nanjing, Jiangsu Province, China
| | - Shujunyan Cheng
- Health Management Center, Sir Run Run Hospital, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Yu Liu
- Department of Endocrinology, Sir Run Run Hospital, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Yimin Li
- Department of Cardiology, Sir Run Run Hospital, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Xiang Lu
- Department of Geriatrics, Sir Run Run Hospital, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Zhengkai Shen
- Department of Integrated Service and Management, Jiangsu Province Center for Disease Control and Prevention, Nanjing, Jiangsu Province, China
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Copur S, Onal EM, Afsar B, Ortiz A, van Raalte DH, Cherney DZ, Rossing P, Kanbay M. Diabetes mellitus in chronic kidney disease: Biomarkers beyond HbA1c to estimate glycemic control and diabetes-dependent morbidity and mortality. J Diabetes Complications 2020; 34:107707. [PMID: 32861562 DOI: 10.1016/j.jdiacomp.2020.107707] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 08/07/2020] [Accepted: 08/08/2020] [Indexed: 12/13/2022]
Abstract
Diabetes mellitus (DM) is the leading cause of chronic kidney disease (CKD). Optimal glycemic control contributes to improved outcomes in patients with DM, particularly for microvascular damage, but blood glucose levels are too variable to provide an accurate assessment and instead markers averaging long-term glycemic load are used. The most established glycemic biomarker of long-term glycemic control is HbA1c. Nevertheless, HbA1c has pitfalls that limit its accuracy to estimate glycemic control, including the presence of altered red blood cell survival, hemoglobin glycation and suboptimal performance of HbA1c assays. Alternative methods to evaluate glycemic control in patients with DM include glycated albumin, fructosamine, 1-5 anhydroglucitol, continuous glucose measurement, self-monitoring of blood glucose and random blood glucose concentration measurements. Accordingly, our aim was to review the advantages and pitfalls of these methods in the context of CKD.
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Affiliation(s)
- Sidar Copur
- Department of Medicine, Koc University School of Medicine, Istanbul, Turkey
| | - Emine M Onal
- Department of Medicine, Koc University School of Medicine, Istanbul, Turkey
| | - Baris Afsar
- Department of Medicine, Division of Nephrology, Suleyman Demirel University School of Medicine, Isparta, Turkey
| | - Alberto Ortiz
- Dialysis Unit, School of Medicine, IIS-Fundacion Jimenez Diaz, Universidad Autónoma de Madrid, Avd. Reyes Católicos 2, 28040 Madrid, Spain
| | - Daniel H van Raalte
- Diabetes Center, Department of Internal Medicine, Amsterdam University Medical Center, location VUMC, Amsterdam, the Netherlands
| | - David Z Cherney
- Toronto General Hospital Research Institute, UHN, Toronto, Canada; Departments of Physiology and Pharmacology and Toxicology, University of Toronto, Ontario, Canada
| | - Peter Rossing
- Steno Diabetes Center Copenhagen, Copenhagen, Denmark; University of Copenhagen, Copenhagen, Denmark
| | - Mehmet Kanbay
- Department of Medicine, Division of Nephrology, Koc University School of Medicine, Istanbul, Turkey.
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García-Del-Pino I, Bauça JM, Gómez C, Caballero A, Llopis MA, Ibarz M, Martínez D, Ventura M, Marzana I, Puente JJ, Segovia M, Salas P, Gómez-Rioja R. Preanalytical issues related to routine and diagnostic glucose tests: Results from a survey in Spain. Biochem Med (Zagreb) 2020; 30:010704. [PMID: 31839724 PMCID: PMC6904967 DOI: 10.11613/bm.2020.010704] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 10/12/2019] [Indexed: 01/02/2023] Open
Abstract
Introduction Diabetes mellitus (DM) is one of the most prevalent diseases worldwide. The objective of this study was to find out under what preanalytical conditions routine and diagnostic glucose tests are performed across Spanish laboratories; and also what criteria are used for DM diagnosis. Materials and methods An online survey was performed by the Commission on Quality Assurance in the Extra-Analytical Phase of the Spanish Society of Laboratory Medicine (SEQC-ML). Access to the questionnaire was available on the home page of the SEQC-ML website during the period April-July 2018. Data analysis was conducted with the IBM SPSS© Statistics (version 20.0) program. Results A total of 96 valid surveys were obtained. Most laboratories were in public ownership, serving hospital and primary care patients, with high and medium workloads, and a predominance of mixed routine-urgent glucose testing. Serum tubes were the most used for routine glucose analysis (92%) and DM diagnosis (54%); followed by lithium-heparin plasma tubes (62%), intended primarily for urgent glucose testing; point-of-care testing devices were used by 37%; and plasma tubes with a glycolysis inhibitor, mainly sodium fluoride, by 19%. Laboratories used the cut-off values and criteria recognized worldwide for DM diagnosis in adults and glucose-impaired tolerance, but diverged in terms of fasting plasma glucose and gestational DM criteria. Conclusion Preanalytical processing of routine and DM diagnostic glucose testing in Spain does not allow a significant, non-quantified influence of glycolysis on the results to be ruled out. Possible adverse consequences include a delay in diagnosis and possible under-treatment.
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Affiliation(s)
- Isabel García-Del-Pino
- Spanish Society of Laboratory Medicine, Extra-analytical Quality Commission, Barcelona, Spain.,Area Laboratory, A Coruña University Hospital Complex, A Coruña, Spain
| | - Josep M Bauça
- Spanish Society of Laboratory Medicine, Extra-analytical Quality Commission, Barcelona, Spain.,Department of Laboratory Medicine, Son Espases University Hospital, Palma, Balearic Islands, Spain
| | - Carolina Gómez
- Spanish Society of Laboratory Medicine, Extra-analytical Quality Commission, Barcelona, Spain.,Department of Clinical Analysis and Biochemistry, Laboratori Clínic Metropolitana Nord, Germans Trias i Pujol Hospital, Badalona, Spain
| | - Andrea Caballero
- Spanish Society of Laboratory Medicine, Extra-analytical Quality Commission, Barcelona, Spain.,Preanalytic Area, Department of Clinical Biochemistry, Vall d'Hebron Hospital, Barcelona, Spain
| | - María Antonia Llopis
- Spanish Society of Laboratory Medicine, Extra-analytical Quality Commission, Barcelona, Spain.,Clinical Laboratories Corporate Coordination, Catalan Health Institute, Barcelona, Spain
| | - Mercedes Ibarz
- Spanish Society of Laboratory Medicine, Extra-analytical Quality Commission, Barcelona, Spain.,Department of Laboratory Medicine, Arnau de Vilanova University Hospital, IRBLleida, Lleida, Spain
| | - Débora Martínez
- Spanish Society of Laboratory Medicine, Extra-analytical Quality Commission, Barcelona, Spain.,Department of Laboratory Medicine, University of Navarra Clinic, Madrid, Spain
| | - Montserrat Ventura
- Spanish Society of Laboratory Medicine, Extra-analytical Quality Commission, Barcelona, Spain.,External Quality Assurance Programmes, Spanish Society of Laboratory Medicine, Barcelona, Spain
| | - Itziar Marzana
- Spanish Society of Laboratory Medicine, Extra-analytical Quality Commission, Barcelona, Spain.,Department of Laboratory, Cruces University Hospital, Barakaldo, Bizkaia, Spain
| | - Juan J Puente
- Spanish Society of Laboratory Medicine, Extra-analytical Quality Commission, Barcelona, Spain.,Department of Biochemistry, 'Lozano Blesa' University Clinical Hospital, Zaragoza, Spain
| | - Marta Segovia
- Spanish Society of Laboratory Medicine, Extra-analytical Quality Commission, Barcelona, Spain.,Department of Laboratory Medicine, La Paz-Cantoblanco-Carlos III University Hospital, Madrid, Spain
| | - Paloma Salas
- Spanish Society of Laboratory Medicine, Extra-analytical Quality Commission, Barcelona, Spain.,Department manager of Preanalytical and Extraanalytical Quality phase, Catlab, Viladecavalls, Barcelona, Spain
| | - Rubén Gómez-Rioja
- Spanish Society of Laboratory Medicine, Extra-analytical Quality Commission, Barcelona, Spain.,Department of Laboratory Medicine, La Paz-Cantoblanco-Carlos III University Hospital, Madrid, Spain
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Nguyen NQ, Debreceni TL, Burgess JE, Bellon M, Wishart J, Standfield S, Malbert CH, Horowitz M. Impact of gastric emptying and small intestinal transit on blood glucose, intestinal hormones, glucose absorption in the morbidly obese. Int J Obes (Lond) 2018; 42:1556-1564. [PMID: 29453463 DOI: 10.1038/s41366-018-0012-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 11/06/2017] [Accepted: 11/27/2017] [Indexed: 02/07/2023]
Abstract
This study evaluated gastric emptying (GE) and small intestinal (SI) transit in people with morbid obesity and their relationships to glycaemia, incretin hormones, and glucose absorption METHODS: GE and caecal arrival time (CAT) of a mixed meal were assessed in 22 morbidly obese (50.2 ± 2.5 years; 13 F:9 M; BMI: 48.6 ± 1.8 kg/m2) and 10 lean (38.6 ± 8.4 years; 5 F:5 M; BMI: 23.9 ± 0.7 kg/m2) subjects, using scintigraphy. Blood glucose, plasma 3-O-methylglucose, insulin, glucagon, glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) were measured. Insulin sensitivity and resistance were also quantified RESULTS: When compared with lean subjects, GE (t50: 60.7 ± 6.5 vs. 41.1 ± 7.3 min; P = 0.04) and CAT (221.5 ± 9.8 vs. 148.0 ± 7.1 min; P = 0.001) of solids were prolonged in morbid obesity. Postprandial rises in GIP (P = 0.001), insulin (P = 0.02), glucose (P = 0.03) and 3-O-methylglucose (P = 0.001) were less. Whereas GLP-1 increased at 45 mins post-prandially in lean subjects, there was no increase in the obese (P = 0.04). Both fasting (P = 0.045) and postprandial (P = 0.012) plasma glucagon concentrations were higher in the obese CONCLUSIONS: GE and SI transit are slower in the morbidly obese, and associated with reductions in postprandial glucose absorption, and glycaemic excursions, as well as plasma GIP and GLP-1.
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Affiliation(s)
- Nam Q Nguyen
- Department of Gastroenterology and Hepatology, Level 7, Royal Adelaide Hospital, North Terrace, Adelaide, SA, 5000, Australia.
- Discipline of Medicine, University of Adelaide, Royal Adelaide Hospital, Level 6 Eleanor Harrold Building, North Terrace, Adelaide, SA, 5000, Australia.
| | - Tamara L Debreceni
- Department of Gastroenterology and Hepatology, Level 7, Royal Adelaide Hospital, North Terrace, Adelaide, SA, 5000, Australia
| | - Jenna E Burgess
- Department of Gastroenterology and Hepatology, Level 7, Royal Adelaide Hospital, North Terrace, Adelaide, SA, 5000, Australia
| | - Max Bellon
- Nuclear Medicine, PET and Bone Densitometry, Royal Adelaide Hospital, Adelaide, SA, Australia
| | - Judith Wishart
- Discipline of Medicine, University of Adelaide, Royal Adelaide Hospital, Level 6 Eleanor Harrold Building, North Terrace, Adelaide, SA, 5000, Australia
| | - Scott Standfield
- Discipline of Medicine, University of Adelaide, Royal Adelaide Hospital, Level 6 Eleanor Harrold Building, North Terrace, Adelaide, SA, 5000, Australia
| | | | - Michael Horowitz
- Discipline of Medicine, University of Adelaide, Royal Adelaide Hospital, Level 6 Eleanor Harrold Building, North Terrace, Adelaide, SA, 5000, Australia
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