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Chaiho Jeong Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea

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Bongseong Kim Department of Medical Statistics, Soongsil University of Korea, Seoul, Republic of Korea

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Jinyoung Kim Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea

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Hansang Baek Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea

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Mee Kyoung Kim Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea

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Tae-Seo Sohn Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea

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Ki-Hyun Baek Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea

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Ki-Ho Song Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea

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Hyun-Shik Son Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea

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Kyungdo Han Department of Medical Statistics, Soongsil University of Korea, Seoul, Republic of Korea

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Hyuk-Sang Kwon Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea

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Objective

Real-world-based population data about the optimal low-density lipoprotein cholesterol (LDL-C) level for preventing cardiovascular disease in very high-risk populations is scarce.

Methods

From 2009 to 2012, 26,922 people aged ≥ 40 years with type 2 diabetes mellitus (T2DM) who had a history of percutaneous coronary intervention (PCI) were analyzed. Data from the Korean National Health Insurance System were used. They were followed up to the date of a cardiovascular event or the time to death, or until December 31, 2018. Endpoints were recurrent PCI, newly stroke or heart failure, cardiovascular death, and all-cause death. Participants were divided into the following categories according to LDL-C level: <55 mg/dL, 55–69 mg/dL, 70–99 mg/dL, 100–129 mg/dL, 130–159 mg/dL, and ≥ 160 mg/dL.

Results

Compared to LDL-C < 55 mg/dL, the hazard ratios (HR) for re-PCI and stroke increased linearly with increasing LDL-C level in the population < 65 years. However, in ≥ 65 years old, HRs for re-PCI and stroke in LDL-C = 55–69 mg/dL were 0.97 (95% CI: 0.85–1.11) and 0.96 (95% CI: 0.79–2.23), respectively. The optimal range with the lowest HR for heart failure and all-cause mortality were LDL-C = 70–99 mg/dL and LDL-C = 55–69 mg/dL, respectively, in all age groups (HR: 0.99, 95% CI: 0.91–1.08 and HR: 0.91, 95% CI: 0.81–1.01).

Conclusion

LDL-C level below 55 mg/dL appears to be optimal in T2DM patients with established cardiovascular disease aged < 65 years, while an LDL-C level of 55–69 mg/dL may be optimal for preventing recurrent PCI and stroke in patients over 65 years old.

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Sigrid Bjerge Gribsholt Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus, Denmark
Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus, Denmark
Department of Clinical Epidemiology, Aarhus University Hospital and Aarhus University, Aarhus, Denmark

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Morten Schmidt Department of Clinical Epidemiology, Aarhus University Hospital and Aarhus University, Aarhus, Denmark
Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark

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Eskild Bendix Kristiansen Department of Clinical Epidemiology, Aarhus University Hospital and Aarhus University, Aarhus, Denmark

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Bjørn Richelsen Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus, Denmark
Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus, Denmark
Department of Clinical Medicine, Aarhus University, Aarhus, Denmark

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Henrik Toft Sørensen Department of Clinical Epidemiology, Aarhus University Hospital and Aarhus University, Aarhus, Denmark
Department of Clinical Medicine, Aarhus University, Aarhus, Denmark

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Objective

The aim was to examine the association between hospital-diagnosed overweight/obesity and incident CVD according to the time period of the overweight/obesity diagnosis.

Design

This is a cohort study.

Methods

From Danish national health registries, we identified all residents with a first-time hospital-based overweight/obesity diagnosis code, 1977–2018 (n = 195,221), and an age and sex-matched general population comparison cohort (n = 1,952,210). We computed adjusted hazard ratios (aHRs) with 95% confidence intervals (CIs) using Cox regression. We adjusted for comorbidities and educational level and applied 10 years of follow-up.

Results

The overall incidence rate was 10.1 (95% CI 10.0–10.1) per 1000 person-years for the comparison cohort and 25.1 (95% CI 24.8–25.4) per 1000 person-years for the overweight/obesity cohort, corresponding to an aHR of 2.5 (95% CI 2.4–2.5). The aHR was elevated for all subtypes of CVD: heart failure: 3.9 (95% CI 3.7–4.1), bradyarrhythmia: 2.9 (95% CI 2.7–3.1), angina pectoris: 2.7 (95% CI 2.7–2.8), atrial fibrillation or flutter: 2.6 (95% CI 2.5–2.6), acute myocardial infarction: 2.4 (95% CI 2.3–2.4), revascularization procedure: 2.4 (95% CI 2.2–2.5), valvular heart disease: 1.7 (95% CI 1.6–1.8), ischemic stroke: 1.6 (95% CI 1.4–1.7), transient ischemic attack: 1.6 (95% CI 1.5–1.7), and cardiovascular death: 1.6 (95% CI 1.5–1.6). The 1–10-year aHR of any CVD associated with an overweight/obesity diagnosis decreased from 2.8 (95% CI 2.7–2.9) in 1977–1987 to 1.8 (95% CI 1.8–1.9) in 2008–2018.

Conclusion

Patients with hospital-diagnosed overweight/obesity had high rates of ischemic heart disease, heart failure, structural heart disease, arrhythmia, stroke, and death, although the strength of the association decreased in recent years.

Significance statement

Obesity is linked to metabolic abnormalities that predispose individuals to an increased risk of subtypes of CVD. In this population-based nationwide 40-year cohort study, we found that of 195,221 patients with an overweight/obesity diagnosis, more than 31,000 (15.9%) were admitted to hospital within 10 years because of CVD; corresponding to a 2.5-fold greater relative risk of any CVD associated with overweight/obesity than in the general population. We observed an increased risk for most CVD subtypes, including ischemic heart disease, heart failure, structural heart disease, arrhythmia, stroke, and cardiovascular death, although the strength of the association decreased in recent years. Our study emphasizes the importance of improved clinical handling of obesity and underscores the need to prevent associated complications to alleviate the burden of obesity.

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Svjatoslavs Kistkins Pauls Stradiņš Clinical University Hospital, Riga, Latvia

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Othmar Moser Division of Exercise Physiology and Metabolism, Institute of Sport Science, University of Bayreuth, Bayreuth, Germany

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Vitālijs Ankudovičs Pauls Stradiņš Clinical University Hospital, Riga, Latvia

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Dmitrijs Blizņuks Institute of Smart Computing Technologies, Riga Technical University, Riga, Latvia

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Timurs Mihailovs Institute of Smart Computing Technologies, Riga Technical University, Riga, Latvia

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Sergejs Lobanovs Pauls Stradiņš Clinical University Hospital, Riga, Latvia

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Harald Sourij Trials Unit for Interdisciplinary Metabolic Medicine, Division of Endocrinology and Diabetolgoy, Medical University of Graz, Graz, Austria

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Andreas F H Pfeiffer Department of Endocrinology and Metabolic Medicine, Campus Benjamin Franklin, Charité University Medicine, Hindenburgdamm, Berlin, Germany

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Valdis Pīrāgs Pauls Stradiņš Clinical University Hospital, Riga, Latvia
Faculty of Medicine, University of Latvia, Riga, Latvia

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The increasing prevalence of ‘diabesity’, a combination of type 2 diabetes and obesity, poses a significant global health challenge. Unhealthy lifestyle factors, including poor diet, sedentary behaviour, and high stress levels, combined with genetic and epigenetic factors, contribute to the diabesity epidemic. Diabesity leads to various significant complications such as cardiovascular diseases, stroke, and certain cancers. Incretin-based therapies, such as GLP-1 receptor agonists and dual hormone therapies, have shown promising results in improving glycaemic control and inducing weight loss. However, these therapies also come with certain disadvantages, including potential withdrawal effects. This review aims to provide insights into the cross-interactions of insulin, glucagon, and GLP-1, revealing the complex hormonal dynamics during fasting and postprandial states, impacting glucose homeostasis, energy expenditure, and other metabolic functions. Understanding these hormonal interactions may offer novel hypotheses in the development of ‘anti-diabesity’ treatment strategies. The article also explores the question of the antagonism of insulin and glucagon, providing insights into the potential synergy and hormonal overlaps between these hormones.

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H A Booij Department of Neurology, Medisch Spectrum Twente, Enschede, the Netherlands

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W D C Gaykema Roessingh Rehabilitation Center, Enschede, the Netherlands

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K A J Kuijpers Roessingh Rehabilitation Center, Enschede, the Netherlands

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M J M Pouwels Department of Endocrinology, Medisch Spectrum Twente, Enschede, the Netherlands

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H M den Hertog Department of Neurology, Medisch Spectrum Twente, Enschede, the Netherlands

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Background

Poststroke fatigue (PSF) is a highly prevalent and debilitating condition. However, the etiology remains incompletely understood. Literature suggests the co-prevalence of pituitary dysfunction (PD) with stroke, and the question raises whether this could be a contributing factor to the development of PSF. This study reviews the prevalence of PD after stroke and other acquired brain injuries and its association with fatigue.

Summary

We performed a bibliographic literature search of MEDLINE and EMBASE databases for English language studies on PD in adult patients with stroke, traumatic brain injury (TBI) or aneurysmatic subarachnoid hemorrhage (aSAH). Forty-two articles were selected for review. Up to 82% of patients were found to have any degree of PD after stroke. Growth hormone deficiency was most commonly found. In aSAH and TBI, prevalences up to 49.3% were reported. However, data differed widely between studies, mostly due to methodological differences including the diagnostic methods used to define PD and the focus on the acute or chronic phase. Data on PD and outcome after stroke, aSAH and TBI are conflicting. No studies were found investigating the association between PD and PSF. Data on the association between PD and fatigue after aSAH and TBI were scarce and conflicting, and fatigue is rarely been investigated as a primary end point.

Key messages

Data according to the prevalence of PD after stroke and other acquired brain injury suggest a high prevalence of PD after these conditions. However, the clinical relevance and especially the association with fatigue need to be established.

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Agnieszka Adamska Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Białystok, Bialystok, Poland

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Vitalii Ulychnyi Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Białystok, Bialystok, Poland

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Katarzyna Siewko Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Białystok, Bialystok, Poland

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Anna Popławska-Kita Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Białystok, Bialystok, Poland

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Małgorzata Szelachowska Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Białystok, Bialystok, Poland

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Marcin Adamski Faculty of Computer Science, Bialystok University of Technology, Białystok, Poland

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Angelika Buczyńska Clinical Research Centre, Medical University of Bialystok, Bialystok, Poland

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Adam Jacek Krętowski Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Białystok, Bialystok, Poland
Clinical Research Centre, Medical University of Bialystok, Bialystok, Poland

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Cardiovascular risk factors could be present in mild adrenal autonomous cortisol secretion (MACS). However, the most frequent cardiovascular risk factors in MACS have not been established. The aim of the presseent study was to analyse the difference in cardiovascular risk factors in patients with MACS in comparison to those with non-functioning adrenal tumour (NFAT). A total of 295 patients with adrenal incidentaloma were included in this retrospective study. We divided our group into those who showed suppression in 1 mg overnight dexamethasone suppression test (DST) (NFAT) (serum cortisol level ≤1.8 μg/dL) and those who did not show suppression in the DST (MACS) (serum concentration of cortisol > 1.8 μg/dL and ≤5 μg/dL). In the studied groups, we analysed the presence of cardiovascular risk factors, such as obesity, prediabetes, type 2 diabetes mellitus (T2DM), hypertension, hyperlipidaemia, chronic kidney disease and cardiovascular events. In our study, 18.9% of patients were defined as MACS. Importantly, T2DM was diagnosed in 41% of MACS vs 23% of NFAT (P < 0.01) and higher frequency of occurrence of hyperlipidaemia in NFAT (72.4%) vs MACS (53.6%) (P = 0.01) was observed. We did not observed differences in the frequency of obesity, hypertension, chronic kidney disease, prediabetes, atrial fibrillation, stroke, ST and non-ST elevation myocardial infarction and coronary angioplasty between patients with MACS and NFAT (all P > 0.05; respectively). In MACS, T2DM is more prevalent than in NFAT; hyperlipidaemia is more prevalent in NFAT. Accordingly, no differences were found in the incidence of obesity, hypertension, prediabetes, chronic kidney disease between studied groups as well as cardiovascular events.

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Eng-Loon Tng Department of Medicine, Level 8, Tower A, Ng Teng Fong General Hospital, Singapore

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Yee Sian Tiong Department of Medicine, Level 8, Tower A, Ng Teng Fong General Hospital, Singapore

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Aye Thida Aung Department of Medicine, Level 8, Tower A, Ng Teng Fong General Hospital, Singapore

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Nicole Ya Yuan Chong Department of Medicine, National University Hospital, Singapore

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Zhemin Wang Department of Medicine, National University Hospital, Singapore

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Background

Evidence on the efficacy and safety of anticoagulation in preventing stroke and thromboembolic events in people with thyrotoxic atrial fibrillation is scarce.

Objective

We evaluated the efficacy and safety of anticoagulation in people with thyrotoxic atrial fibrillation.

Methods

Our study protocol was published in the International Prospective Register of Systematic Reviews (registration no. CRD42020222782). Four databases and two systematic review registers were searched through 25 November 2020 for interventional and observational studies comparing anticoagulation therapy with active comparators, placebo, or no treatment in people with thyrotoxic atrial fibrillation. Random-effects meta-analysis and sensitivity analysis were performed. Quality of evidence was described using the GRADE framework.

Results

In the study, 23,145 records were retrieved. One randomized controlled trial and eight cohort studies were ultimately included. Effect estimates on the efficacy and safety of anticoagulation were extracted. Meta-analysis using the inverse variance and random-effects methods was conducted on four cohort studies with 3443 participants and 277 events. Anticoagulation in people with thyrotoxic atrial fibrillation reduced the risk of ischemic stroke and systemic thromboembolism by 3% (95% CI: 1–6%). Warfarin may prevent ischemic stroke in people with thyrotoxic atrial fibrillation if the CHA2DS2-VASc score exceeds 1 and when atrial fibrillation persists beyond 7 days. Direct oral anticoagulants may be associated with fewer bleeding events than warfarin.

Conclusions

Anticoagulation prevents ischemic stroke and systemic thromboembolism in people with thyrotoxic atrial fibrillation. Direct oral anticoagulants may be associated with fewer bleeding events.

Open access
L E Zijlstra Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands

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D M van Velzen Department of Internal Medicine, Section of Endocrinology, Northwest Clinics, Alkmaar, The Netherlands

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S Simsek Department of Internal Medicine, Section of Endocrinology, Northwest Clinics, Alkmaar, The Netherlands

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S P Mooijaart Department of Internal Medicine, Section of Gerontology and Geriatrics, Leiden University Medical Center, Leiden, The Netherlands

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M van Buren Department of Nephrology, Leiden University Medical Center, Leiden, The Netherlands
Department of Internal Medicine, HagaHospital, The Hague, The Netherlands

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D J Stott Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK

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I Ford Robertson Centre for Biostatistics, University of Glasgow, Glasgow, UK

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J W Jukema Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands

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S Trompet Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands
Department of Internal Medicine, Section of Gerontology and Geriatrics, Leiden University Medical Center, Leiden, The Netherlands

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Objective

Thyroid hormones have been implicated to play a role in cardiovascular disease, along with studies linking thyroid hormone to kidney function. The aim of this study is to investigate whether kidney function modifies the association of subclinical thyroid dysfunction and the risk of cardiovascular outcomes.

Methods

In total, 5804 patients were included in the PROspective Study of Pravastatin in the Elderly at Risk (PROSPER). For the current analysis, 426 were excluded because of overt thyroid disease at baseline or 6 months, 266 because of inconsistent thyroid function at baseline and 6 months, 294 because of medication use that could influence thyroid function, and 16 because of missing kidney or thyroid values. Participants with normal fT4 were classified, based on TSH both at inclusion and 6 months, into three groups: subclinical hypothyroidism (TSH >4.5 mIU/L); euthyroidism (TSH = 0.45–4.5 mIU/L); and subclinical hyperthyroidism (TSH <0.45 mIU/L). Strata of kidney function were made based on estimated glomerular filtration rate into three clinically relevant groups: <45, 45–60, and >60 mL/min/1.73 m2. The primary endpoint consists of death from coronary heart disease, non-fatal myocardial infarction and (non)fatal stroke.

Results

Mean age was 75.3 years, and 49.0% patients were male. Mean follow-up was 3.2 years. Of all participants, 109 subjects (2.2%) had subclinical hypothyroidism, 4573 (94.0%) had euthyroidism, and 182 (3.7%) subclinical hyperthyroidism. For patients with subclinical hypothyroidism, euthyroidism, and subclinical hyperthyroidism, primary outcome occurred in 9 (8.3%), 712 (15.6%), and 23 (12.6%) patients, respectively. No statistically significant relationship was found between subclinical thyroid dysfunction and primary endpoint with adjusted hazard ratios of 0.51 (0.24–1.07) comparing subclinical hyperthyroidism and 0.90 (0.58–1.39) comparing subclinical hypothyroidism with euthyroidism. Neither was this relationship present in any of the strata of kidney function, nor did kidney function interact with subclinical thyroid dysfunction in the association with primary endpoint (P interaction = 0.602 for subclinical hyperthyroidism and 0.388 for subclinical hypothyroidism).

Conclusions

In this secondary analysis from PROSPER, we found no evidence that the potential association between thyroid hormones and cardiovascular disease is modified by kidney function in older patients with subclinical thyroid dysfunction.

Open access
Leyre Lorente-Poch Endocrine Surgery Unit, Hospital del Mar, Barcelona, Spain
Departament de Cirurgia, Universitat Autònoma de Barcelona, Barcelona, Spain

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Sílvia Rifà-Terricabras Departament de Cirurgia, Universitat Autònoma de Barcelona, Barcelona, Spain

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Juan José Sancho Endocrine Surgery Unit, Hospital del Mar, Barcelona, Spain
Departament de Cirurgia, Universitat Autònoma de Barcelona, Barcelona, Spain

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Danilo Torselli-Valladares Endocrine Surgery Unit, Hospital del Mar, Barcelona, Spain

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Sofia González-Ortiz Department of Radiology, Hospital del Mar, Barcelona, Spain

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Antonio Sitges-Serra Endocrine Surgery Unit, Hospital del Mar, Barcelona, Spain
Departament de Cirurgia, Universitat Autònoma de Barcelona, Barcelona, Spain

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Objective:

Permanent hypoparathyroidism is an uncommon disease resulting most frequently from neck surgery. It has been associated with visceral calcifications but few studies have specifically this in patients with post-surgical hypoparathyroidism. The aim of the present study was to assess the prevalence of basal ganglia and carotid artery calcifications in patients with long-term post-thyroidectomy hypoparathyroidism compared with a control population.

Design:

Case–control study.

Methods:

A cross-sectional review comparing 29 consecutive patients with permanent postoperative hypoparathyroidism followed-up in a tertiary reference unit for Endocrine Surgery with a contemporary control group of 501 patients who had an emergency brain CT scan. Clinical variables and prevalence of basal ganglia and carotid artery calcifications were recorded.

Results:

From a cohort of 46 patients diagnosed with permanent hypoparathyroidism, 29 were included in the study. The mean duration of disease was 9.2 ± 7 years. Age, diabetes, hypertension, smoking and dyslipidemia were similarly distributed in case and control groups. The prevalence of carotid artery and basal ganglia calcifications was 4 and 20 times more frequent in patients with permanent hypoparathyroidism, respectively. After propensity score matching of the 28 the female patients, 68 controls were matched for age and presence of cardiovascular factors. Cases showed a four-fold prevalence of basal ganglia calcifications, whereas that of carotid calcifications was similar between cases and controls.

Conclusion:

A high prevalence of basal ganglia calcifications was observed in patients with post-surgical permanent hypoparathyroidism. It remains unclear whether carotid artery calcification may also be increased.

Open access
Mette Faurholdt Gude Medical/Steno Aarhus Research Laboratory, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark

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Rikke Hjortebjerg Department of Molecular Endocrinology, University of Southern Denmark, Odense, Denmark
Steno Diabetes Centre Odense, Odense University Hospital, Odense, Denmark

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Mette Bjerre Medical/Steno Aarhus Research Laboratory, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark

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Morten Haaning Charles Department of Public Health, Aarhus University, Aarhus, Denmark
Steno Diabetes Centre Aarhus, Aarhus University Hospital, Aarhus, Denmark

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Daniel R Witte Department of Public Health, Aarhus University, Aarhus, Denmark
Steno Diabetes Centre Aarhus, Aarhus University Hospital, Aarhus, Denmark

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Annelli Sandbæk Department of Public Health, Aarhus University, Aarhus, Denmark
Steno Diabetes Centre Aarhus, Aarhus University Hospital, Aarhus, Denmark

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Jan Frystyk Endocrine Research Unit, Department of Endocrinology, Odense University Hospital & Department of Clinical Research, Faculty of Health, University of Southern Denmark, Odense, Denmark

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Objective

Physiologically, pregnancy-associated plasma protein-A (PAPP-A) serves to liberate bound IGF1 by enzymatic cleavage of IGF-binding proteins (IGFBPs), IGFBP4 in particular. Clinically, PAPP-A has been linked to cardiovascular disease (CVD). Stanniocalcin-2 (STC2) is a natural inhibitor of PAPP-A enzymatic activity, but its association with CVD is unsettled. Therefore, we examined associations between the STC2–PAPP-A–IGFBP4–IGF1 axis and all-cause mortality and CVD in patients with type 2 diabetes (T2D).

Design

We followed 1284 participants with T2D from the ADDITION trial for 5 years.

Methods

Circulating concentrations of STC2, PAPP-A, total and intact IGFBP4 and IGF1 and -2 were measured at inclusion. End-points were all-cause mortality and a composite CVD event: death from CVD, myocardial infarction, stroke, revascularisation or amputation. Survival analysis was performed by Cox proportional hazards model.

Results

During follow-up, 179 subjects presented with an event. After multivariable adjustment, higher levels of STC2, PAPP-A, as well as intact and total IGFBP4, were associated with all-cause mortality; STC2: hazard ratio (HR) = 1.84 (1.09–3.12) (95% CI); P = 0.023, PAPP-A: HR = 2.81 (1.98–3.98); P < 0.001, intact IGFBP4: HR = 1.43 (1.11–1.85); P = 0.006 and total IGFBP4: HR = 3.06 (1.91–4.91); P < 0.001. Higher PAPP-A levels were also associated with CVD events: HR = 1.74 (1.16–2.62); P = 0.008, whereas lower IGF1 levels were associated with all-cause mortality: HR = 0.51 (0.34–0.76); P = 0.001.

Conclusions

This study supports that PAPP-A promotes CVD and increases mortality. However, STC2 is also associated with mortality. Given that STC2 inhibits the enzymatic effects of PAPP-A, we speculate that STC2 either serves to counteract harmful PAPP-A actions or possesses effects independently of the PAPP-A–IGF1 axis.

Significance statement

PAPP-A has pro-atherosclerotic effects and exerts these most likely through IGF1. IGF1 is regulated by the STC2–PAPP-A–IGFBP4–IGF1 axis, where STC2, an irreversible inhibitor of PAPP-A, has been shown to reduce the development of atherosclerotic lesions in mice. We examined the association of this axis to mortality and CVD in T2D. We demonstrated an association between PAPP-A and CVD. All components of the STC2–PAPP-A–IGFBP4–IGF1 axis were associated with mortality and it is novel that STC2 was associated with mortality in T2D. Our study supports that inhibition of PAPP-A may be a new approach to reducing mortality and CVD. Whether modification of STC2 could serve as potential intervention warrants further investigation.

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Yueyuan Yang Department of Endocrinology, Renmin Hospital of Wuhan University, Wuhan, China

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Tingting Yu Department of Radiology, Renmin Hospital of Wuhan University, Wuhan, China

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Zhili Niu Department of Clinical Laboratory, Institute of translational medicine, Renmin Hospital of Wuhan University, Wuhan, China

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Ling Gao Department of Endocrinology, Renmin Hospital of Wuhan University, Wuhan, China

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Objective

Uridine might be a common link between pathological pathways in diabetes and cardiovascular diseases. This study aimed to investigate the predictive value of plasma uridine for type 2 diabetes (T2D) and T2D with atherosclerosis.

Methods

Individuals with T2D and healthy controls (n = 218) were randomly enrolled in a cross-sectional study. Patients with T2D were divided into two groups based on carotid ultrasound: patients with carotid atherosclerosis (CA) (group DCA) and patients without CA (group D). Plasma uridine was determined using HPLC-MS/MS. Correlation and logistic regression analyses were used to analyze the results.

Results

Fasting and postprandial uridine were significantly increased in patients with T2D compared with healthy individuals. Logistic regression suggested that fasting and postprandial uridine were independent risk factors for T2D. The receiver operating characteristic (ROC) curve showed that fasting uridine had a predictive value on T2D (95% CI, 0.686–0.863, sensitivity 74.3%, specificity 71.8%). Fasting uridine was positively correlated with LDL-c, FBG, and PBG and negatively correlated with fasting C-peptide (CP-0h) and HOMA-IS. The change in postprandial uridine from fasting baseline (Δuridine) was smaller in T2D patients with CA compared with those without (0.80 (0.04–2.46) vs 2.01 (0.49–3.15), P = 0.010). Δuridine was also associated with T2D with CA and negatively correlated with BMI, CP-0h, and HOMA-IR.

Conclusion

Fasting uridine has potential as a predictor of diabetes. Δuridine is closely associated with carotid atherosclerosis in patients with T2D.

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