Journal Description
Diabetology
Diabetology
is an international, peer-reviewed, open access journal on diabetes research published monthly online by MDPI.
- Open Access— free for readers, with article processing charges (APC) paid by authors or their institutions.
- High Visibility: indexed within ESCI (Web of Science), Scopus, EBSCO, and other databases.
- Rapid Publication: manuscripts are peer-reviewed and a first decision is provided to authors approximately 23.4 days after submission; acceptance to publication is undertaken in 5.4 days (median values for papers published in this journal in the second half of 2024).
- Journal Rank: CiteScore - Q2 (Medicine (miscellaneous))
- Recognition of Reviewers: APC discount vouchers, optional signed peer review, and reviewer names published annually in the journal.
Impact Factor:
2.2 (2024);
5-Year Impact Factor:
2.5 (2024)
Latest Articles
Effect of Chronic Administration of Justicia secunda Vahl in Mice Diabetized with Streptozotocin
Diabetology 2025, 6(6), 56; https://doi.org/10.3390/diabetology6060056 - 18 Jun 2025
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Certain pharmacological properties of the methanolic extract of Justicia secunda Vahl leaves (Acanthaceae) were evaluated in Streptozotocin (STZ)-treated albino mice to confirm whether it could be considered an alternative candidate for the treatment of diabetes. Using qualitative phytochemistry, alkaloids, flavonoids, and
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Certain pharmacological properties of the methanolic extract of Justicia secunda Vahl leaves (Acanthaceae) were evaluated in Streptozotocin (STZ)-treated albino mice to confirm whether it could be considered an alternative candidate for the treatment of diabetes. Using qualitative phytochemistry, alkaloids, flavonoids, and tannins were detected. In an in vitro DPPH antioxidant activity test, high extract concentrations inhibited the radical by 90% during the first minutes of the reaction. The extract presented a slight genoprotective effect on mouse peripheral blood during the last days of the micronucleus test. Oral administration of the extract at a high dose every two days for 6 weeks caused a hypoglycemic effect in STZ-treated mice, protection against weight loss, and decreased blood triglyceride levels from week 3 of treatment. These effects could be mediated by the antioxidant activity of the detected metabolites and, perhaps, by an inhibitory effect on intestinal α-glucosidase. This renders J. secunda a good candidate for the long-term alternative treatment of diabetes without abandoning allopathic therapy.
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Open AccessArticle
High Diagnostic Performance of the Indicator Plaster Neuropad for the Detection of Established Diabetic Autonomic Neuropathy
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Ioanna Zografou, Panagiotis Doukelis, Theocharis Koufakis, Evangelia Kotzakioulafi, Polykarpos Evripidou, Zisis Kontoninas, Christos Savopoulos, Michael Doumas, Triantafyllos Didangelos and Konstantinos Kantartzis
Diabetology 2025, 6(6), 55; https://doi.org/10.3390/diabetology6060055 - 11 Jun 2025
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Aim: The aim of this study was to evaluate the specificity, sensitivity and accuracy of the Indicator Plaster Neuropad in detecting established Diabetic Autonomic Neuropathy (DAN). Methods: We studied 180 patients with Diabetes Mellitus (DM, mean age 49.5 ± 16 years, 82 with
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Aim: The aim of this study was to evaluate the specificity, sensitivity and accuracy of the Indicator Plaster Neuropad in detecting established Diabetic Autonomic Neuropathy (DAN). Methods: We studied 180 patients with Diabetes Mellitus (DM, mean age 49.5 ± 16 years, 82 with DM type 1). All patients underwent the following Cardiovascular Reflex Tests (CARTs): R-R variation during deep breathing (Mean Circular Resultant (MCR) and standard deviation (SD)), Valsalva maneuver, R-R variability after a rapid change from lying to standing position and postural hypotension. The presence of DAN was established if ≥2 CARTs were abnormal. According to the result the patients were divided into two groups, one with DAN and one without DAN. Assessment with Neuropad was performed also in all patients. Results: Abnormal perspiration with Neuropad (uncompleted or no change in color) was detected in 94 patients. Established DAN was detected in 85 patients. The sensitivity, specificity and accuracy of Neuropad for the diagnosis of established DAN were 87.1%, 78.9% and 82.8%, respectively and area under the curve was 0.846 and 95% CI (0.787, 0.905). Conclusions: Neuropad has high sensitivity, specificity, and accuracy in detecting established DAN, as defined by ≥2 abnormal CARTs.
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Open AccessArticle
Changes to Gestational Diabetes Mellitus (GDM) Testing and Associations with the GDM Prevalence and Large- and Small-for-Gestational-Age Infants—An Observational Study in an Australian Jurisdiction, 2012–2019
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Jennifer Hutchinson, Catherine R. Knight-Agarwal, Christopher J. Nolan and Deborah Davis
Diabetology 2025, 6(6), 54; https://doi.org/10.3390/diabetology6060054 - 9 Jun 2025
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Background: Two changes to gestational diabetes mellitus (GDM) testing were implemented in the Australian Capital Territory in 2015 and 2017. Aims: We aimed to determine the associations between testing regimes and the prevalence of GDM and large-for-gestational-age (LGA) and small-for-gestational-age (SGA) infants and
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Background: Two changes to gestational diabetes mellitus (GDM) testing were implemented in the Australian Capital Territory in 2015 and 2017. Aims: We aimed to determine the associations between testing regimes and the prevalence of GDM and large-for-gestational-age (LGA) and small-for-gestational-age (SGA) infants and to compare the prevalence of LGA and SGA infants between women with and without GDM in each testing period. Methods: A total of 23,790 singleton live births with estimated GDM testing and birth dates between June 2012 and December 2019 were stratified into groups: pre-testing changes (June 2012–December 2014, group 1, n = 8069), revised diagnostic criteria (January 2015–May 2017, group 2, n = 8035) and changed pathology centrifugation protocol (June 2017-December 2019, group 3, n = 7686). Women were allocated to groups based on their estimated GDM testing date and stratified by their GDM status. A chi-square test, pairwise z-tests and logistic regression tested the associations. Results: The GDM prevalence significantly increased from 9.5% (group 1) to 19.4% (group 2) to 26.3% (group 3) (all: p < 0.001). The LGA infant prevalence significantly decreased in non-GDM women following revised diagnostic criteria implementation (11.6% vs. 9.7%, p = 0.001). Compared to group 1, women with GDM in groups 2 and 3 had significantly reduced odds of having LGA infants (aOR = 0.73, 95% CI of 0.56–0.95 and p = 0.021 and aOR = 0.75, 95% CI of 0.59–0.97 and p = 0.029, respectively). Compared to group 1, non-GDM women in groups 2 and 3 had significantly reduced odds of having LGA infants (aOR = 0.83, 95% CI of 0.74–0.92 and p < 0.001 and aOR = 0.88, 95% CI of 0.79–0.99 and p = 0.026, respectively). There were no significant associations for group 3 compared to group 2 nor for SGA infants. Conclusions: While significantly increasing the GDM prevalence, implementing the testing changes was associated with a reduced whole-population LGA infant prevalence without a change in the SGA infant prevalence.
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(This article belongs to the Special Issue Feature Papers in Diabetology 2025)
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Open AccessArticle
Impact of the Menstrual Cycle on Glycemic Control in Women with Type 1 Diabetes and the Potential Role of AHCL Systems
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Angelo Milioto, Chiara Gulisano, Giordano Spacco, Giulia Siri, Benedetta Caccia, Maria Grazia Calevo, Nicola Minuto, Davide Carlo Maggi, Marta Bassi and Francesco Cocchiara
Diabetology 2025, 6(6), 53; https://doi.org/10.3390/diabetology6060053 - 6 Jun 2025
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Background/Objectives: Hormonal fluctuations during the menstrual cycle can affect glycemic control in women with type 1 diabetes (T1D), especially during the luteal phase, when increased insulin resistance may lead to prolonged hyperglycemia. Advanced Hybrid Closed-Loop (AHCL) systems could help manage these hormone-driven
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Background/Objectives: Hormonal fluctuations during the menstrual cycle can affect glycemic control in women with type 1 diabetes (T1D), especially during the luteal phase, when increased insulin resistance may lead to prolonged hyperglycemia. Advanced Hybrid Closed-Loop (AHCL) systems could help manage these hormone-driven fluctuations. This study aimed to assess glycemic control across menstrual phases and explore the role of AHCL systems in counteracting the related glucose variability. Methods: A retrospective study was conducted including women with T1D and regular menstrual cycles (study group) and women on estroprogestin therapy (control group). Each group was subdivided by insulin delivery method (AHCL vs. non-AHCL). Glycemic metrics and insulin requirements were compared between the follicular and luteal phases, and between groups. Results: The study included 94 women (62 in the study group, 32 in the control group). In the study group, glycemic control worsened during the luteal phase, with increased average glucose, glycemic variability, and time above range > 250 mg/dL (+0.93%, p = 0.03) and reduced time in range 70–180 mg/dL. These changes were more pronounced among AHCL users, who also showed a significant increase in bolus insulin. No phase-related differences were observed in the control group or among non-AHCL users. Significantly higher insulin needs during the follicular phase were found in the study group compared with the controls. Conclusions: This study confirmed a worsening in glycemic control in women affected by T1D during the luteal phase of the menstrual cycle, suggesting a need for more tailored management. The clear efficacy of AHCL systems in counteracting hormone-related glycemic fluctuations has not been proved, highlighting the need for further research in larger, more homogeneous cohorts.
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Open AccessSystematic Review
Addressing the Shortage of GLP-1 RA and Dual GIP/GLP-1 RA-Based Therapies—A Systematic Review
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Velimir Altabas, Zrinka Orlović and Maja Baretić
Diabetology 2025, 6(6), 52; https://doi.org/10.3390/diabetology6060052 - 5 Jun 2025
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Introduction: Glucagon-like peptide-1 receptor agonists (GLP-1 RAs) and dual glucose-dependent insulinotropic peptide/glucagon-like peptide-1 receptor agonists (GIP/GLP-1 RAs) have transformed disease management, particularly in diabetes and obesity. However, recent shortages have disrupted patient care. This review explores the current evidence regarding their direct impact
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Introduction: Glucagon-like peptide-1 receptor agonists (GLP-1 RAs) and dual glucose-dependent insulinotropic peptide/glucagon-like peptide-1 receptor agonists (GIP/GLP-1 RAs) have transformed disease management, particularly in diabetes and obesity. However, recent shortages have disrupted patient care. This review explores the current evidence regarding their direct impact on patient populations and reviews the mitigation strategies recommended by relevant health organizations. Materials and Methods: We systematically searched PubMed, Scopus, and Web of Science for studies published from the earliest available data to 10 January 2025, using these terms: “GLP-1 AND shortage”, “liraglutide AND shortage”, “dulaglutide AND shortage”, “semaglutide AND shortage”, “exenatide AND shortage”, and “tirzepatide AND shortage”. Eligible studies needed to report measurable outcomes like prescription counts, specific laboratory findings, or the proportion of a study population achieving a defined outcome related to the shortage. Only English-language clinical research was considered, while other manuscripts were not included. The risk of bias was assessed using the Critical Appraisal Skills Programme checklist. Study characteristics and findings were summarized in tables. Results: Out of 295 identified manuscripts, 85 works were retained for further screening. Consequently, 8 studies met the inclusion criteria, covering 1036 participants with type 2 diabetes and 573 treated for obesity. In addition, two studies reported prescription prevalence, and one examined prescription counts. Key findings included reduced prescription rates and shifts in treatment practices. No studies assessed impacts on cardiovascular, renal outcomes, or mortality. Discussion and Conclusions: Evidence on the health effects of these shortages is limited. Existing studies highlight disruptions in diabetes and obesity care, but broader impacts remain unclear. Preventing future shortages requires coordinated efforts among all stakeholders. Therefore, we advocate for ethical planning, sustainable production, and fair distribution strategies to mitigate long-term consequences.
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Open AccessArticle
Non-Invasive Multiclass Diabetes Classification Using Breath Biomarkers and Machine Learning with Explainable AI
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Alberto Gudiño-Ochoa, Julio Alberto García-Rodríguez, Raquel Ochoa-Ornelas, Eduardo Ruiz-Velazquez, Sofia Uribe-Toscano, Jorge Ivan Cuevas-Chávez and Daniel Alejandro Sánchez-Arias
Diabetology 2025, 6(6), 51; https://doi.org/10.3390/diabetology6060051 - 4 Jun 2025
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Background/Objectives: The increasing prevalence of diabetes underscores the urgent need for non-invasive, rapid, and cost-effective diagnostic alternatives. This study presents a breath-based multiclass diabetes classification system leveraging only three gas sensors (CO, alcohol, and acetone) to analyze exhaled breath composition. Methods:
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Background/Objectives: The increasing prevalence of diabetes underscores the urgent need for non-invasive, rapid, and cost-effective diagnostic alternatives. This study presents a breath-based multiclass diabetes classification system leveraging only three gas sensors (CO, alcohol, and acetone) to analyze exhaled breath composition. Methods: Breath samples were collected from 58 participants (22 healthy, 7 prediabetic, and 29 diabetic), with blood glucose levels serving as the reference metric. To enhance classification performance, we introduced a novel biomarker, the alcohol-to-acetone ratio, through a feature engineering approach. Class imbalance was addressed using the Synthetic Minority Over-Sampling Technique (SMOTE), ensuring a balanced dataset for model training. A nested cross-validation framework with 3 outer and 3 inner folds was implemented. Multiple machine learning classifiers were evaluated, with Random Forest and Gradient Boosting emerging as the top-performing models. Results: An ensemble combining both yielded the highest overall performance, achieving an average accuracy of 98.86%, precision of 99.07%, recall of 98.81% and F1 score of 98.87%. These findings highlight the potential of gas sensor-based breath analysis as a highly accurate, scalable, and non-invasive method for diabetes screening. Conclusions: The proposed system offers a promising alternative to blood-based diagnostic approaches, paving the way for real-world applications in point-of-care diagnostics and continuous health monitoring.
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Open AccessArticle
Readily Available Index of Insulin Sensitivity Is Associated with Metabolic Dysfunction-Associated Steatotic Liver Disease and Liver Fibrosis in Patients with Type 2 Diabetes
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Stefano Ciardullo, Alessandro Roberto Dodesini, Emanuele Muraca, Pietro Invernizzi, Roberto Trevisan and Gianluca Perseghin
Diabetology 2025, 6(6), 50; https://doi.org/10.3390/diabetology6060050 - 4 Jun 2025
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Background/Objectives: Insulin resistance is a key factor in the development and progression of metabolic dysfunction-associated steatotic liver disease (MASLD), but accurately measuring it in patients with type 2 diabetes (T2D) remains challenging. This study examines the relationship between a recently proposed insulin
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Background/Objectives: Insulin resistance is a key factor in the development and progression of metabolic dysfunction-associated steatotic liver disease (MASLD), but accurately measuring it in patients with type 2 diabetes (T2D) remains challenging. This study examines the relationship between a recently proposed insulin resistance index and the presence of liver steatosis and fibrosis in individuals with T2D. Methods: This cross-sectional study utilized data from the 2017–2020 National Health and Nutrition Examination Survey. Patients with T2D who did not have chronic viral hepatitis or significant alcohol intake were included. The insulin sensitivity (IS) index was calculated using a formula incorporating body mass index, urine albumin-to-creatinine ratio, triglycerides, and gamma-glutamyl transferase. Liver stiffness and steatosis were assessed through transient elastography. MASLD was defined as a controlled attenuation parameter (CAP) of ≥274 decibels/meter (dB/m), while significant liver fibrosis was defined as a liver stiffness measurement (LSM) of ≥8 kPa. Multivariable logistic regression models, adjusted for potential confounders, were used to evaluate the association between IS and these liver outcomes. Results: A total of 1084 patients with T2D were analyzed. The prevalence of MASLD and significant liver fibrosis was 74.1% (95% CI 68.7–78.9) and 25.4% (95% CI 21.2–30.2), respectively. After adjusting for age, sex, waist circumference, and race/ethnicity, lower IS scores (indicating higher insulin resistance) were independently associated with increased odds of both MASLD (quartile 1 vs. quartile 4: OR 2.66, 95% CI 1.23–5.71) and significant liver fibrosis (quartile 1 vs. quartile 4: OR 3.30, 95% CI 1.45–7.51). These findings remained consistent across subgroups stratified by age, sex, and obesity status. Conclusions: This novel IS model, derived from commonly available clinical and biochemical markers, is independently associated with liver steatosis and fibrosis. Its application may help identify patients with more advanced MASLD, facilitating early intervention and risk stratification.
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Open AccessReview
Glycemia Risk Index: A New Metric to Rule Them All?
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Gonzalo Diaz Soto, Paloma Pérez López, Pablo Fernández Velasco and Pilar Bahillo Curieses
Diabetology 2025, 6(6), 49; https://doi.org/10.3390/diabetology6060049 - 3 Jun 2025
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The Glycemia Risk Index (GRI) aims to summarize the overall quality of a patient’s glycemic control in a single number, and it is calculated from the hypo- and hyperglycemia times from continuous glucose monitoring, weighted by coefficients. Despite its recent appearance in 2022,
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The Glycemia Risk Index (GRI) aims to summarize the overall quality of a patient’s glycemic control in a single number, and it is calculated from the hypo- and hyperglycemia times from continuous glucose monitoring, weighted by coefficients. Despite its recent appearance in 2022, this new parameter has strong international support, with almost half a hundred indexed articles already incorporating this metric into their studies. The following is a breakdown of the main papers that have used GRI, divided according to the type of treatment used, the population studied, the type of diabetes, its association with other parameters, and its relationship with chronic complications and the quality of life of people living with diabetes.
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Open AccessReview
Senolytic Interventions for Type 2 Diabetes: Current Evidence and Future Directions
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Selene Sodini and Milton Fabián Suarez-Ortegón
Diabetology 2025, 6(6), 48; https://doi.org/10.3390/diabetology6060048 - 3 Jun 2025
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Cellular senescence, a phenomenon characterized by the accumulation of dysfunctional, metabolically active cells, is increasingly recognized to be a key player in aging-related metabolic disorders. It is accelerated by hyperglycemia through various molecular pathways, positioning it as a critical mechanism in the pathophysiology
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Cellular senescence, a phenomenon characterized by the accumulation of dysfunctional, metabolically active cells, is increasingly recognized to be a key player in aging-related metabolic disorders. It is accelerated by hyperglycemia through various molecular pathways, positioning it as a critical mechanism in the pathophysiology of type 2 diabetes mellitus (T2D) and a potential therapeutic target. Emerging evidence from animal and clinical studies suggests that the usage of senolytic drugs, which selectively deplete senescent cells, can improve blood glucose regulation and mitigate diabetic complications. However, despite the conceptual feasibility of this approach, several challenges remain in their translation to the clinic: the molecular mechanisms underlying the pathogenicity of cellular senescence in vivo remain incompletely understood, and organ-specific effects of senolytic administration are yet to be fully elucidated to ensure their safety and efficacy in clinical applications. This review explores the characteristics of cellular senescence and the senescence-associated secretory phenotype (SASP) in key tissues involved in glucose homeostasis, including the pancreas, liver, adipose tissue, and skeletal muscle and the potential applications of targeting cellular senescence as a therapeutic strategy for T2D management.
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Open AccessCase Report
Beneficial Role of Increased Glucose Infusion in Decompensated Type 2 Diabetes Patient
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Marie Ticha, Ondrej Sobotka, Pavel Skorepa and Lubos Sobotka
Diabetology 2025, 6(6), 47; https://doi.org/10.3390/diabetology6060047 - 3 Jun 2025
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Introduction: Managing glycemic fluctuations in critically ill elderly patients with type 2 diabetes mellitus (T2DM) poses significant challenges. This case report presents a unique scenario in which increased intravenous glucose (Glc) infusion, together with insulin therapy, improved glycemic control and reduced insulin requirements
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Introduction: Managing glycemic fluctuations in critically ill elderly patients with type 2 diabetes mellitus (T2DM) poses significant challenges. This case report presents a unique scenario in which increased intravenous glucose (Glc) infusion, together with insulin therapy, improved glycemic control and reduced insulin requirements during a septic episode. This finding adds to the scientific literature by suggesting that adequate Glc administration may enhance insulin sensitivity in critically ill T2DM patients. Case report: An 84-year-old female patient with T2DM, hypertension, and chronic renal failure was admitted to the intensive care unit with fever, nausea, loss of appetite, and profound weakness. Laboratory findings revealed severe hyperglycemia, electrolyte imbalances, and markedly elevated inflammatory markers, leading to the diagnosis of decompensated T2DM that was complicated by sepsis. The initial treatment consisted of continuous intravenous (IV) insulin, crystalloid infusions, and broad-spectrum antibiotics. Despite insulin therapy and the absence of nutritional intake, the patient experienced extreme fluctuations in their blood glucose levels, ranging from hyperglycemia to hypoglycemia. Due to persistent glycemic instability, IV Glc infusion was initiated alongside continuous insulin therapy. Paradoxically, increasing Glc infusion administration rate led to a reduction in the required insulin doses and stabilization of blood glucose levels below 10 mmol·L−1. The patient’s C-peptide levels were initially elevated but subsequently decreased following Glc administration as well, suggesting a reduction in endogenous insulin secretion and therefore higher insulin sensitivity. The patient’s clinical condition improved, allowing for the transition to a subcutaneous insulin regime and the initiation of oral feeding. She was later transferred to a general medical ward and discharged without further complications. Conclusions: This case highlights the complex interplay between Glc and insulin in critically ill elderly patients with T2DM during sepsis. The main takeaway is that carefully managed Glc infusion, in conjunction with flexible insulin therapy, can enhance insulin sensitivity and stabilize blood glucose levels without causing further hyperglycemia. Frequent glycemia monitoring and adaptable glycemic management strategies are essential in the ICU to address rapid glycemic fluctuations in this patient population.
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Open AccessArticle
Factors Affecting HbA1c According to Sleep Duration in Adults with Diabetes
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Myoungjin Kwon, Sun Ae Kim and Jiyoung Kim
Diabetology 2025, 6(6), 46; https://doi.org/10.3390/diabetology6060046 - 1 Jun 2025
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Background/Objectives: This study investigated factors affecting glycated hemoglobin (HbA1c) levels according to sleep duration in adults with diabetes. HbA1c is an important indicator for the diagnosis and management of diabetes, and lowering this value is important for reducing the risk of complications. Recent
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Background/Objectives: This study investigated factors affecting glycated hemoglobin (HbA1c) levels according to sleep duration in adults with diabetes. HbA1c is an important indicator for the diagnosis and management of diabetes, and lowering this value is important for reducing the risk of complications. Recent studies have shown that sleep duration and quality play important roles in controlling blood sugar levels in patients with diabetes. Therefore, we aimed to analyze the factors affecting HbA1c levels according to sleep duration in adult patients with diabetes and propose a personalized diabetes management strategy. Methods: This was a secondary analysis of data from the Korea National Health and Nutrition Examination Survey (KNHANES) conducted between 2022 and 2023. The study included 1363 adults aged ≥30 years who were diagnosed with diabetes by a doctor. The participants were categorized into three groups based on their sleep duration: <7 h, 7–9 h, and ≥9 h. Results: The significant factors affecting HbA1c levels varied according to sleep duration. Age, drinking, and stress were significant for those who slept for <7 h. For those sleeping 7–9 h, energy intake, protein intake, fat intake, and education level were significant. Health checkups and drinking were significant for those who slept for >9 h. Conclusions: This study suggests that sleep duration is an important variable in diabetes management and should be considered in personalized diabetes management strategies. Future studies should explore various factors related to sleep patterns in greater depth.
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Open AccessArticle
Age-Dependent Loss of Sirtuin1 (Sirt1) Correlates with Reduced Autophagy in Type 2 Diabetic Patients (T2DM)
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Julia Fischer, Nina Judith Hos, Sophie Tritschler, Joel Schmitz-Peters, Raja Ganesan, Chiara Calabrese, Petra Schiller, Hannah Brunnert, Angela Nowag, Sandra Winter, Ruth Hanßen, Katja Römer, Nazifa Qurishi, Isabelle Suarèz, Norma Jung, Clara Lehmann, Georg Plum, Michael Faust, Pia Hartmann and Nirmal Robinson
Diabetology 2025, 6(6), 45; https://doi.org/10.3390/diabetology6060045 - 23 May 2025
Abstract
Aims and Background: Type 2 diabetes mellitus (T2DM) is a chronic metabolic disorder frequently associated with increased inflammation and dysregulated innate immune responses. Thus, patients with T2DM are predisposed to bacterial infections. However, the underlying mechanism is poorly understood. The NAD+-dependent deacetylase Sirtuin1
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Aims and Background: Type 2 diabetes mellitus (T2DM) is a chronic metabolic disorder frequently associated with increased inflammation and dysregulated innate immune responses. Thus, patients with T2DM are predisposed to bacterial infections. However, the underlying mechanism is poorly understood. The NAD+-dependent deacetylase Sirtuin1 (SIRT1) plays an important role in regulating cellular metabolism, including T2DM and aging. Furthermore, we have recently demonstrated that SIRT1 critically regulates inflammatory pathways and autophagy during infection. Thus, we aimed to investigate SIRT1 expression and its correlation with autophagy in peripheral blood mononuclear cells (PBMCs) from patients with T2DM compared to non-diabetic patients. Methods: Clinical characteristics of the study subjects were obtained. SIRT1 and autophagic markers such as p62 and LC3-I/II were determined using Western blot analysis followed by densitometric analysis. Results: We found that SIRT1 levels were decreased in PBMCs of diabetic patients in an age-dependent manner. Importantly, reduced SIRT1 expression correlated with reduced LC3-II/I ratios, indicating reduced autophagy. Reduced SIRT1 also corresponded to decreased autophagic adaptor protein Sequestome-1/p62. Conclusions: In summary, our results suggest a potential role of SIRT1 in regulating autophagy in PBMCs from T2DM patients.
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(This article belongs to the Special Issue Feature Papers in Diabetology 2024)
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Open AccessArticle
A Randomized Controlled Trial in a 14-Month Longitudinal Design to Analyze the Effects of a Peer Support Instant Messaging Service Intervention to Improve Diabetes Self-Management and Support
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Elisabeth Höld, Ursula Hemetek, Katharina Tremmel, Tatjana Aubram, Johanna Grüblbauer, Martin Wiesholzer, Manuel Schwanda and Stefan Stieger
Diabetology 2025, 6(5), 44; https://doi.org/10.3390/diabetology6050044 - 21 May 2025
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Background/Objectives: The outcomes of diabetes therapy depend largely on how well patients can implement medical advice in their lives. The main aim of the DiabPeerS study was to evaluate a peer support instant messaging service (IMS) approach to diabetes self-management education and support
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Background/Objectives: The outcomes of diabetes therapy depend largely on how well patients can implement medical advice in their lives. The main aim of the DiabPeerS study was to evaluate a peer support instant messaging service (IMS) approach to diabetes self-management education and support (DSMES) for people with type 2 diabetes mellitus (T2DM). Methods: Participants with T2DM took part in a randomized controlled trial. Both the intervention group (IG) and the control group (CG) received standard therapy, but the IG additionally participated in the peer support IMS intervention. The duration of the intervention was 7 months, succeeded by a follow-up 7 months later. Eleven biochemical, six behavioral, and six psychosocial parameters were measured at four times. Results: The targeted sample size could not be reached, and 68 participants took part. The following results have been found for the main hypotheses: No influence on HbA1c was detected (IG: −0.27, CG: +0.06, p > 0.05). Diabetes self-management behaviors were unaffected (IGdiet: +0.02, CGdiet: +0.46, p > 0.05; IGexercise: −0.72, CGexercise: +0.44, p > 0.05; IGbloodsugar: −0.21, CGbloodsugar: +0.65, p > 0.05; IGfootcare: +0.37, CGfootcare: +1.13, p > 0.05). Quality of life increased during the intervention in both the IG (KSK: +8.92, PSK: +7.41, p < 0.001) and the CG (KSK: +8.73, PSK: +7.48, p < 0.001). Medication adherence increased in the IG (+3.31, p < 0.01), although these participants were still classified as non-adherent. Conclusions: A peer support IMS intervention is a promising approach, but we recommend combining the online setting with an initial face-to-face situation.
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Open AccessReview
The Role of Adenosine Signaling in Obesity-Driven Type 2 Diabetes: Revisiting Mechanisms and Implications for Metabolic Regulation
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Giuseppe Faraco and Joana M. Gaspar
Diabetology 2025, 6(5), 43; https://doi.org/10.3390/diabetology6050043 - 19 May 2025
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The global prevalence of obesity and type 2 diabetes has increased considerably in recent decades, primarily due to behavioral changes associated with societal progress, such as increased consumption of high-calorie foods and sedentary lifestyles. Obesity is a disease of the energy homeostasis system,
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The global prevalence of obesity and type 2 diabetes has increased considerably in recent decades, primarily due to behavioral changes associated with societal progress, such as increased consumption of high-calorie foods and sedentary lifestyles. Obesity is a disease of the energy homeostasis system, not merely a passive accumulation of fat. The hypothalamus serves as the regulatory center for energy balance, and together with peripheral organs, such as liver, pancreas, muscle and adipose tissue, controls food intake, energy expenditure, and whole-body metabolism. Adenosine, a product of ATP catabolism, exerts its effects through various G-protein-coupled receptors: A1R, A2AR, A2BR, and A3R. It plays a key role in regulating peripheral metabolism, including glucose homeostasis, insulin sensitivity, fat beta-oxidation, and lipolysis in adipose tissue. Beyond its roles in the CNS, adenosine receptors are also crucial in metabolic tissues, where they regulate glucose and lipid homeostasis and contribute to overall metabolic function. Several studies have been analyzing the role of adenosine system, specifically the adenosine receptors in the regulation of whole-body metabolism, and the importance of adenosine receptors in context of metabolic diseases and obesity. In this review, we provide an overview of the adenosine signaling system, highlighting its role in metabolic regulation as well as the pathophysiological mechanisms underlying obesity and type 2 diabetes.
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Open AccessArticle
Plan, Track, and Live Mindfully: Insights from the Eat Smart, Move More, Prevent Diabetes Program
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Erin McCallum, Kelly Nordby, Surabhi Aggarwal, Christine Lavelle, Cathy Thomas and Carolyn Dunn
Diabetology 2025, 6(5), 42; https://doi.org/10.3390/diabetology6050042 - 14 May 2025
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In the United States, at least one in three adults has prediabetes, a condition categorized by blood glucose levels higher than normal but not high enough to be classified as type 2 diabetes. The Centers for Disease Control and Prevention (CDC) recommends a
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In the United States, at least one in three adults has prediabetes, a condition categorized by blood glucose levels higher than normal but not high enough to be classified as type 2 diabetes. The Centers for Disease Control and Prevention (CDC) recommends a modest weight loss of 5–7%, a reduction in A1C by 0.2%, and at least 150 min of physical activity per week to prevent or delay the onset of type 2 diabetes in individuals with prediabetes. Eat Smart, Move More, Prevent Diabetes (ESMMPD) is a CDC-recognized lifestyle-change program for individuals with prediabetes or at high risk of developing type 2 diabetes. ESMMPD consists of 26 lessons delivered over the course of a year by trained Lifestyle Coaches using ZoomTM. Participants are taught strategies to implement health-promoting behaviors related to healthy eating, physical activity, and mindfulness into their daily lives. The core components of the program are planning, tracking, and living mindfully. The aim of this article is to provide insights into the development, delivery, and core components of the ESMMPD program for public health practitioners.
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Open AccessReview
The Intricate Relationship Between Thyroid Disorders and Type 2 Diabetes—A Narrative Review
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Dana-Mihaela Tilici, Diana Loreta Paun, Ana Maria Arnautu, Alexandra Mirica, Carmen Duta, Mirona Costea and Cristian Guja
Diabetology 2025, 6(5), 41; https://doi.org/10.3390/diabetology6050041 - 13 May 2025
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Thyroid disorders (TDs) and diabetes mellitus (DM) represent significant metabolic pathologies with an important global burden. Diabetes, characterized by chronic hyperglycemia, induces widespread dysregulation of lipid, protein, and carbohydrate metabolism. The thyroid gland, a central regulator of endocrine homeostasis, modulates metabolic processes through
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Thyroid disorders (TDs) and diabetes mellitus (DM) represent significant metabolic pathologies with an important global burden. Diabetes, characterized by chronic hyperglycemia, induces widespread dysregulation of lipid, protein, and carbohydrate metabolism. The thyroid gland, a central regulator of endocrine homeostasis, modulates metabolic processes through the secretion of thyroid hormones (THs). A complex bidirectional relationship exists between type 2 diabetes mellitus (T2DM) and thyroid dysfunction, wherein each condition may exacerbate the pathophysiological consequences of the other. At the core of this interplay lies insulin resistance (IR), a fundamental mechanism underlying their coexistence and mutual aggravation. A thorough investigation into the underlying mechanisms of thyroid function could reveal new insights into the development and progression of T2DM. Grasping the clinical correlation between these widespread endocrine disorders is crucial for customizing treatments for individuals confronting both conditions. This narrative review seeks to offer an understanding of the epidemiological, pathophysiological, and clinical dimensions of the relationship between TD and T2DM. Considering the substantial clinical ramifications of concurrent T2DM and TD, it is imperative to institute suitable screening and management approaches for both endocrine disorders to guarantee optimal care for patients.
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Open AccessReview
Bridging ADHD and Metabolic Disorders: Insights into Shared Mechanisms and Clinical Implications
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Ilaria Marcelli, Umberto Capece and Alfredo Caturano
Diabetology 2025, 6(5), 40; https://doi.org/10.3390/diabetology6050040 - 8 May 2025
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Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by inattention, impulsivity and/or hyperactivity. In recent years, metabolic alterations, primarily obesity, insulin resistance, and diabetes, have emerged as frequent comorbidities in individuals with ADHD, suggesting a bidirectional relationship between neurodevelopmental and metabolic dysfunctions. Emerging
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Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by inattention, impulsivity and/or hyperactivity. In recent years, metabolic alterations, primarily obesity, insulin resistance, and diabetes, have emerged as frequent comorbidities in individuals with ADHD, suggesting a bidirectional relationship between neurodevelopmental and metabolic dysfunctions. Emerging evidence indicates that dysregulation of dopaminergic signaling, disturbances in the hypothalamic-pituitary-adrenal (HPA) axis, and chronic low-grade inflammation are central to both ADHD symptomatology and metabolic impairments. For instance, alterations in dopamine-related genes (e.g., DRD4, DAT1) not only affect cognitive and behavioral functions but also play a role in appetite regulation and glucose homeostasis. Epidemiological studies further demonstrate that individuals with ADHD exhibit poorer glycemic control and a higher prevalence of both type 1 and type 2 diabetes, while early-life metabolic challenges such as maternal diabetes may predispose offspring to ADHD. This review aims to comprehensively synthesize the epidemiological, genetic, and pathogenetic evidence linking ADHD to metabolic alterations. We discuss key pathophysiological pathways—including dopaminergic dysregulation, HPA axis disturbances, inflammation, and oxidative stress—and evaluate their contributions to the co-occurrence of ADHD and metabolic disorders. In addition, we explore the clinical implications and integrated treatment approaches that encompass lifestyle modifications, pharmacological therapies, and multidisciplinary care. Finally, we outline future research directions to develop personalized and holistic interventions.
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Open AccessArticle
Interplay of PAK1 and CAMKII in Pancreatic Beta Cell Insulin Secretion
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Nely Gisela López-Desiderio, Genaro Patiño-López, Citlaltépetl Salinas-Lara, Carlos Sánchez-Garibay, Olga Villamar-Cruz, Alonso Vilches-Flores, José de Jesús Peralta-Romero, Leonel Armas-López, Jazmín García-Machorro, Luis Enrique Arias-Romero and Héctor Iván Saldívar-Cerón
Diabetology 2025, 6(5), 39; https://doi.org/10.3390/diabetology6050039 - 7 May 2025
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Background/Objectives: Type 2 diabetes mellitus (T2DM) is a major global health challenge, primarily driven by insulin resistance and beta-cell dysfunction. This study investigated the roles of p21-activated kinase 1 (PAK1) and calcium/calmodulin-dependent protein kinase II (CAMKII) in insulin secretion, aiming to elucidate their
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Background/Objectives: Type 2 diabetes mellitus (T2DM) is a major global health challenge, primarily driven by insulin resistance and beta-cell dysfunction. This study investigated the roles of p21-activated kinase 1 (PAK1) and calcium/calmodulin-dependent protein kinase II (CAMKII) in insulin secretion, aiming to elucidate their involvement in this process and their implications in T2DM pathophysiology. Methods: Using the Beta-TC-6 insulinoma cell line, we assessed colocalization and interaction of PAK1 and CAMKII under glucose stimulation through indirect immuno-fluorescence (IFI) and proximity ligation assays (PLA). To examine their expression dynamics in a physiological context, we performed immunohistochemistry (IHC) on pancreatic sections from wild-type (WT), prediabetic, and T2DM murine models. Additionally, bioinformatic analysis of publicly available RNA sequencing (RNA-Seq) data from human islets of healthy donors, prediabetic individuals, and T2DM patients provided translational validation. Results: High glucose conditions significantly increased PAK1-CAMKII colocalization, correlating with enhanced insulin secretion. Pharmacological inhibition of these kinases reduced insulin release, confirming their regulatory roles. Murine and human islet analyses showed a progressive increase in kinase expression from prediabetes to T2DM, highlighting their relevance in disease progression. Conclusions: The coordinated function of PAK1 and CaMKII in insulin secretion suggests their potential as biomarkers and therapeutic targets in T2DM. Further studies are warranted to explore their mechanistic roles and therapeutic applications in preserving beta-cell function.
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Open AccessSystematic Review
Comparative Analysis of Cardiovascular Outcomes in Type 2 Diabetes Patients Engaging in Aerobic, Resistance, and Combined Training: A Systematic Review
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Sayed Alireza Mousavi Zadeh, Giuseppe Caminiti, Maurizio Aracri, Massimo Pieri, Anna Paola Mitterhofer, Antonino De Lorenzo, Sergio Bernardini, Pasquale Farsetti, Maurizio Volterrani, Rosario Barone, Ferdinando Iellamo and Marco Alfonso Perrone
Diabetology 2025, 6(5), 38; https://doi.org/10.3390/diabetology6050038 - 6 May 2025
Abstract
Background: Among individuals with type 2 diabetes (T2D), cardiovascular disease (CVD) is the leading cause of death, demanding prevention approaches. Exercise is a powerful option for non-pharmacological strategies to improve cardiovascular outcomes. This systematic review aims to evaluate the effects of aerobic, resistance,
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Background: Among individuals with type 2 diabetes (T2D), cardiovascular disease (CVD) is the leading cause of death, demanding prevention approaches. Exercise is a powerful option for non-pharmacological strategies to improve cardiovascular outcomes. This systematic review aims to evaluate the effects of aerobic, resistance, and combined training on CVD in individuals with T2D. Methods: From 2013 through the end of 2023, PubMed, Scopus, and Web of Science were systematically searched for articles. The studies included 15 articles lasting at least eight weeks and involving 1794 participants each. The cardiac events measured were blood pressure, lipid levels, heart rate variability (HRV), and inflammatory markers such as C-reactive protein (CRP) and interleukin-6 (IL-6). Results: Aerobic training reduced systolic and diastolic blood pressure by 6 mmHg and 3 mmHg, respectively, while significantly enhancing lipid profiles, evidenced by an 8% reduction in LDL cholesterol and a 5% rise in HDL cholesterol. In addition, improvements in lean muscle mass, insulin sensitivity, and slight changes in inflammatory markers support the benefits of resistance training. The most pronounced effects emerged from combined training, which resulted in a 9 mmHg decrease in systolic blood pressure, a 6 mmHg decrease in diastolic pressure, a 10% reduction in LDL cholesterol, a 15% increase in HRV, and a 10% reduction in CRP and IL-6 levels. Conclusions: Combined training has more favorable effects on several key CVD risk factors than aerobic or resistance training alone. It can be regarded as the most effective exercise modality for decreasing CVD risk in adults with T2D.
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(This article belongs to the Special Issue Risk of Type 2 Diabetes Mellitus: Cardiorenometabolic Syndrome and Its Components)
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Open AccessArticle
Eating Disorders in Young Adults and Adults with Type 1 Diabetes Mellitus
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Andrea Tomás, Tatiana Fernandes and Helena Loureiro
Diabetology 2025, 6(5), 37; https://doi.org/10.3390/diabetology6050037 - 2 May 2025
Abstract
The literature describes an increased risk of eating disorders (EDs) in patients with Type 1 diabetes mellitus (T1DM) compared to the general population. This risk is mainly related to physical and psychosocial problems related to diabetes. EDs should be carefully assessed and treated
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The literature describes an increased risk of eating disorders (EDs) in patients with Type 1 diabetes mellitus (T1DM) compared to the general population. This risk is mainly related to physical and psychosocial problems related to diabetes. EDs should be carefully assessed and treated in these patients since they are associated with poor glycemic control and significant repercussions of pathology. Background/Objectives: To study the presence of EDs in young Portuguese adults and adults with T1DM, and how gender; age group; method of insulin administration; carbohydrate counting; and body mass index [BMI] variables influence the risk of developing an ED. Methods: Data collection was carried out using an online questionnaire, which was disseminated through the media of several Portuguese diabetes associations. Results: The sample consisted of 47 participants, mostly female, with the age group between 26 and 35 years being most representative. A statistically significant association was found between the Eating Attitudes Test [EAT-26] scores and the BMI of the participants [p = 0.003]; other variables did not show statistically significant differences. Conclusions: To better understand the relationship between these two pathologies, further studies are needed, as well as the development of more screening instruments to assess the risk of EDs specific to T1DM, and preventive interventions and guidelines that can assist the various areas of health that support the population with T1DM.
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