17 results on '"Latent Autoimmune Diabetes in Adults"'
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2. Does a prior diagnosis of infectious disease confer an increased risk of latent autoimmune diabetes in adults?
- Author
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Edstorp J, Rossides M, Ahlqvist E, Rasouli B, Tuomi T, and Carlsson S
- Subjects
- Adult, Child, Humans, Case-Control Studies, Autoantibodies, Glutamate Decarboxylase, Latent Autoimmune Diabetes in Adults epidemiology, Diabetes Mellitus, Type 2 epidemiology, Diabetes Mellitus, Type 1 epidemiology, Communicable Diseases complications
- Abstract
Aims: Infections are proposed risk factors for type 1 diabetes in children. We examined whether a diagnosis of infectious disease also confers an increased risk of latent autoimmune diabetes in adults (LADA)., Materials and Methods: We used data from a population-based Swedish case-control study with incident cases of LADA (n = 597) and matched controls (n = 2386). The history of infectious disease was ascertained through national and regional patient registers. We estimated adjusted odds ratios (OR) with 95% confidence intervals for ≥1 respiratory (any/upper/lower), gastrointestinal, herpetic, other or any infectious disease episode, or separately, for 1 and ≥2 infectious disease episodes, within 0-1, 1-3, 3-5 and 5-10 years before LADA diagnosis/matching. Stratified analyses were performed on the basis of HLA risk genotypes and Glutamic acid decarboxylase antibodies (GADA) levels., Results: Individuals who developed LADA did not have a higher prevalence of infectious disease 1-10 years before diabetes diagnosis. For example, OR was estimated at 0.87 (0.66, 1.14) for any versus no respiratory infectious disease within 1-3 years. Similar results were seen for LADA with high-risk HLA genotypes (OR 0.95 [0.64, 1.42]) or high GADA levels (OR 1.10 [0.79, 1.55]), ≥2 episodes (OR 0.89 [0.56, 1.40]), and in infections treated using antibiotics (OR 1.03 [0.73, 1.45]). The only significant association was observed with lower respiratory disease the year preceding LADA diagnosis (OR 1.67 [1.06, 2.64])., Conclusions: Our findings do not support the idea that exposure to infections increases the risk of LADA. A higher prevalence of respiratory infection in the year before LADA diagnosis could reflect increased susceptibility to infections due to hyperglycemia., (© 2023 The Authors. Diabetes/Metabolism Research and Reviews published by John Wiley & Sons Ltd.)
- Published
- 2024
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3. Altered brain spontaneous and synchronization activity in latent autoimmune diabetes in adults: A resting-state functional MRI study.
- Author
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Miao Y, Wang J, Zhang B, Zhang W, Xu X, Hou Y, Ding Q, Yu C, Zhang Z, Bi Y, and Zhu D
- Subjects
- Adult, Humans, Cross-Sectional Studies, Magnetic Resonance Imaging methods, Brain diagnostic imaging, Brain pathology, Cognition, Latent Autoimmune Diabetes in Adults, Diabetes Mellitus, Type 1 pathology
- Abstract
Aims: This study aimed to explore the clinical features and spontaneous brain activity among patients with latent autoimmune diabetes in adults (LADA) and to investigate the relationship among these characteristics., Methods: We conducted a cross-sectional study using cognitive assessments and resting-state functional magnetic resonance imaging (rs-fMRI) to evaluate the cognitive function and brain activities of healthy controls (HCs) and patients with LADA. Functional connectivity (FC) analysis was performed on the brain regions that showed significantly different activation in regional homogeneity (ReHo) analysis between the two groups. Furthermore, a linear regression model was conducted for the association between metabolism and cognition., Results: This study enrolled patients with LADA (and age-, sex-, and education-matched HCs). Patients with LADA had worse cognitive status at the general level and poorer memory than controls. Rs-fMRI analysis among patients with LADA showed decreased ReHo values in the right occipital lobe and temporal lobe and decreased seed-based FC in the right parietal lobe compared to those of controls. The seed-based FC values in the right parietal lobe were positively associated with word fluency and processing speed in patients with LADA. Furthermore, low-density lipoprotein cholesterol was negatively correlated with Montreal Cognitive Assessment scores in patients with LADA., Conclusions: Patients with LADA had worse cognitive function and decreased spontaneous brain activity in the temporal lobe and occipital lobe compared to controls. Moreover, glycolipid metabolism was closely related to brain structure and function in patients with LADA., (© 2022 John Wiley & Sons Ltd.)
- Published
- 2023
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4. The continuous spectrum of glycaemic variability changes with pancreatic islet function: A multicentre cross-sectional study in China.
- Author
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Zhang L, Guo K, Tian Q, Ye J, Ding Z, Zhou Q, Wu J, Fan L, Pan N, Niu X, Zhao Q, Ma Y, Jiang H, Huang G, Li X, Zhou Z, and Yang L
- Subjects
- Adult, Humans, Blood Glucose analysis, Blood Glucose Self-Monitoring, C-Peptide, Cross-Sectional Studies, Diabetes Mellitus, Type 1, Diabetes Mellitus, Type 2, Latent Autoimmune Diabetes in Adults, Islets of Langerhans
- Abstract
Aims: To investigate glycaemic variability (GV) patterns in patients with type 1 diabetes (T1D), type 2 diabetes (T2D), and latent autoimmune diabetes in adults (LADA)., Materials and Methods: A total of 842 subjects (510 T1D, 105 LADA, 227 T2D) were enrolled and underwent 1 week of continuous glucose monitoring (CGM). Clinical characteristics and CGM parameters were compared among T1D, LADA, and T2D. LADA patients were divided into two subgroups based on glutamic acid decarboxylase autoantibody titres (≥180 U/mL [LADA-1], <180 U/mL [LADA-2]) and compared. The C-peptide cut-offs for predicting a coefficient of variation (CV) of glucose ≥36% and a time in range (TIR) > 70% were determined using receiver operating characteristic analysis., Results: Twenty-seven patients (9 T1D, 18 T2D) were excluded due to insufficient CGM data. Sex, diabetes duration and HbA1c were comparable among the three groups. Fasting and 2-h postprandial C-peptide (FCP, 2hCP) increased sequentially across T1D, LADA, and T2D. T1D and LADA patients had comparable TIR and GV, whereas those with T2D had much higher TIR and lower GV (p < 0.001). The GV of LADA-1 was close to that of T1D, while the GV of LADA-2 was close to that of T2D. CP exhibited the strongest negative correlation with GV. The cut-offs of FCP/2hCP for predicting a CV ≥ 36% and TIR >70% were 121.6/243.1 and 128.9/252.8 pmol/L, respectively., Conclusions: GV presented a continuous spectrum across T1D, LADA-1, LADA-2, and T2D. More frequent glucose monitoring is suggested for patients with impaired insulin secretion., Clinical Trail Registration: Chinese Clinical Trial Registration (ChiCTR) website approved by WHO; http://www.chictr.org.cn/ - ChiCTR2200065036., (© 2022 John Wiley & Sons Ltd.)
- Published
- 2022
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5. Innate immunity in latent autoimmune diabetes in adults.
- Author
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Huang J, Pearson JA, Wong FS, Wen L, and Zhou Z
- Subjects
- Animals, Autoantibodies, CD8-Positive T-Lymphocytes pathology, Humans, Immunity, Innate, Rats, Diabetes Mellitus, Type 1, Diabetes Mellitus, Type 2 pathology, Latent Autoimmune Diabetes in Adults
- Abstract
Latent autoimmune diabetes in adults (LADA) is an autoimmune disease that shares some genetic, immunological and clinical features with both type 1 diabetes and type 2 diabetes. Immune cells including CD4
+ T cells, CD8+ T cells, B cells, macrophages and dendritic cells (DCs) have been detected in the pancreas of patients with LADA and a rat model of LADA. Therefore, similar to type 1 diabetes, the pathogenesis of LADA may be caused by interactions between islet β-cells and innate and adaptive immune cells. However, the role of the immunity in the initiation and progression of LADA remains largely unknown. In this review, we have summarized the potential roles of innate immunity and immune-modulators in LADA development. Furthermore, we have examined the evidence and discussed potential innate immunological reasons for the slower development of LADA compared with type 1 diabetes. More in-depth mechanistic studies are needed to fully elucidate the roles of innate immune-associated genes, molecules and cells in their contributions to LADA pathogenesis. Undertaking these studies will greatly enhance the development of new strategies and optimization of current strategies for the diagnosis and treatment of the disease., (© 2021 John Wiley & Sons Ltd.)- Published
- 2022
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6. Increased spontaneous CCL2 (MCP-1) and CCL5 (RANTES) secretion in vitro in LADA compared to type 1 diabetes and type 2 diabetes: Action LADA 14.
- Author
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Ooms M, Strom A, Strassburger K, Menart B, Leslie RD, and Schloot NC
- Subjects
- Adult, Chemokine CCL2, Chemokine CCL5, Humans, Diabetes Mellitus, Type 1 pathology, Diabetes Mellitus, Type 2 pathology, Glucose Intolerance, Latent Autoimmune Diabetes in Adults
- Abstract
Aims: Immune-mediated type 1 diabetes (T1D) in adulthood and latent autoimmune diabetes in adults (LADA) share similar pathological mechanisms but differ clinically in disease progression. The aim of this study was to acquire insights into spontaneous and stimulated chemokine secretion of immune cells in different diabetes types., Materials and Methods: We investigated in vitro spontaneous, mitogen (PI) and antigen (HSP60, p277, pGAD, pIA2) stimulated chemokine secretion of leucocytes from patients with T1D (n = 32), LADA (n = 22), type 2 diabetes (T2D; n = 49), and glucose-tolerant individuals (n = 13). Chemokine concentration in supernatants was measured for CCL2 (MCP-1), CXCL10 (IP10) and CCL5 (RANTES) using a multiplex bead array assay., Results: Spontaneous secretion of CCL2 and CCL5 were higher in LADA compared to T1D and T2D (all p < 0.05) while CXCL10 was similar in the groups. Mitogen-stimulated secretion of CCL2 in LADA was lower compared to T1D and T2D (all p < 0.05) while CXCL10 and CCL5 were similar in all groups. Upon stimulation with pIA2 the secretion of CCL2 in LADA was lower compared to T2D (p < 0.05). Spontaneous CXCL10 secretion in LADA was positively associated with body mass index (r
2 = 0.35; p = 0.0035) and C-peptide (r2 = 0.30; p = 0.009)., Conclusions: Chemokine secretion is altered between different diabetes types. Increased spontaneous secretion of CCL2 and CCL5 and decreased secretion of CCL2, upon stimulation with PI and pIA2, in LADA compared to T1D and T2D could reflect altered immune responsiveness in LADA patients in association with their slower clinical progression compared to insulin dependence., (© 2021 The Authors. Diabetes/Metabolism Research and Reviews published John Wiley & Sons Ltd.)- Published
- 2021
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7. Bone mineral density spectrum in individuals with type 1 diabetes, latent autoimmune diabetes in adults, and type 2 diabetes.
- Author
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Hu Y, Li X, Yan X, Huang G, Dai R, and Zhou Z
- Subjects
- Adult, Female, Humans, Male, Bone Density physiology, Diabetes Mellitus, Type 1 physiopathology, Diabetes Mellitus, Type 2 physiopathology, Latent Autoimmune Diabetes in Adults physiopathology
- Abstract
Objective: To assess bone mineral density (BMD) and associated clinical factors in patients with type 1 diabetes (T1D), latent autoimmune diabetes in adults (LADA), and type 2 diabetes (T2D) and in non-diabetic subjects., Methods: Total 108 age-, sex-, disease duration-, and postmenopausal ratio-matched patients with T1D, LADA, and T2D each and 216 age-, sex-, and postmenopausal ratio-matched non-diabetic controls. Anthropometric, biochemical, and BMD data were collected and analysed., Results: BMD of total hip and lumbar spine of individuals in the LADA group was lower than those in the T2D and control groups but higher than those in the T1D group. After adjusting for body mass index (BMI), a significant difference in BMD in the lumbar spine was seen between groups. After adjustment for smoking, BMI, 25-(OH) vitamin D, calcium, haemoglobin A1c, and diabetic complication scores, BMD values of patients in LADA group were not significantly different from those of patients in T1D and T2D groups. Multiple stepwise regression analysis showed that BMD was (a) positively associated with weight and C-peptide, and negatively associated with age in patients with diabetes, (b) positively associated with C-peptide in the T1D and LADA groups. The proportion of patients with osteoporosis in the T1D, LADA, T2D, and control groups was 55.6%, 45.4%, 34.3%, and 26.9%, respectively., Conclusions: BMD values in T1D, LADA, and T2D were in an increasing order of mention. Patients with autoimmune diabetes were more susceptible to osteoporosis. A lower C-peptide level may be responsible for decreased BMD in individuals with autoimmune diabetes., (© 2020 John Wiley & Sons Ltd.)
- Published
- 2021
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8. Altered peripheral nerve structure and function in latent autoimmune diabetes in adults.
- Author
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Issar T, Yan A, Kwai NCG, Poynten AM, Borire AA, Arnold R, and Krishnan AV
- Subjects
- Adult, Aged, Case-Control Studies, Diabetes Mellitus, Type 1 diagnostic imaging, Diabetes Mellitus, Type 1 physiopathology, Diabetic Neuropathies diagnostic imaging, Disease Progression, Female, Humans, Latent Autoimmune Diabetes in Adults diagnostic imaging, Male, Median Nerve diagnostic imaging, Middle Aged, Risk Factors, Ultrasonography, Diabetic Neuropathies physiopathology, Latent Autoimmune Diabetes in Adults physiopathology, Median Nerve physiopathology, Neural Conduction physiology
- Abstract
Aim: The present study was undertaken to investigate mechanisms of peripheral nerve dysfunction in latent autoimmune diabetes in adults (LADA)., Materials and Methods: Participants with LADA (n = 15) underwent median nerve ultrasonography and nerve excitability to examine axonal structure and function, in comparison to cohorts of type 1 diabetes (n = 15), type 2 diabetes (n = 23) and healthy controls (n = 26). The LADA group was matched for diabetes duration, glycaemic control, and neuropathy severity with the type 1 and type 2 diabetes groups. A validated mathematical model of the human axon was utilized to investigate the pathophysiological basis of nerve dysfunction., Results: The most severe changes in nerve structure and function were noted in the LADA group. The LADA cohort demonstrated a significant increase in nerve cross-sectional area compared to type 1 participants and controls. Compared to type 1 and 2 diabetes, measures of threshold electrotonus, which assesses nodal and internodal conductances, were significantly worse in LADA in response to both depolarising currents and hyperpolarising currents. In the recovery cycle, participants with LADA had a significant increase in the relative refractory period. Mathematical modelling of excitability recordings indicated the basis of nerve dysfunction in LADA was different to type 1 and 2 diabetes., Conclusions: Participants with LADA exhibited more severe changes in nerve function and different underlying pathophysiological mechanisms compared to participants with type 1 or 2 diabetes. Intensive management of risk factors to delay the progression of neuropathy in LADA may be required., (© 2019 John Wiley & Sons Ltd.)
- Published
- 2020
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9. Past, present and future of latent autoimmune diabetes in adults.
- Author
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Liu B, Xiang Y, Liu Z, and Zhou Z
- Subjects
- Adult, Age of Onset, Autoantibodies immunology, Autoimmunity immunology, Diabetes Mellitus, Type 1 immunology, Humans, Diabetes Mellitus, Type 1 epidemiology
- Abstract
Latent autoimmune diabetes in adults (LADA) is the most common form of autoimmune diabetes diagnosed in adults. Similar to type 1 diabetes, the prevalence of LADA is impacted by ethnicity and geography. LADA is characterized by β cell loss due to autoimmunity and insulin resistance and has highly heterogeneous clinical features, autoimmunity, and genetics in a glutamic acid decarboxylase antibody (GADA) titre-dependent manner, suggesting LADA is part of a continuum spectrum between type 1 and type 2 diabetes. Although LADA is the most frequent form of autoimmune diabetes diagnosed in adults, clinical trials involving LADA are scarce. Here we review the recent advancements in LADA epidemiology, clinical features, pathogenesis, and interventions. We also highlight the environmental factors that are thought to play an important role in addition to genetics in the pathogenesis of LADA. In the future, high-throughput molecular profiles might shed light on the nature of LADA among the wide spectrum of diabetes and offer new opportunities to identify novel LADA-specific biomarkers., (© 2019 John Wiley & Sons, Ltd.)
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- 2020
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10. Identification of a distinct phenotype of elderly latent autoimmune diabetes in adults: LADA China Study 8.
- Author
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Niu X, Luo S, Li X, Xie Z, Xiang Y, Huang G, Lin J, Yang L, Liu Z, Wang X, Leslie RD, and Zhou Z
- Subjects
- Adult, Aged, Autoantibodies blood, China, Cross-Sectional Studies, Female, Humans, Latent Autoimmune Diabetes in Adults blood, Male, Middle Aged, Insulin Resistance physiology, Latent Autoimmune Diabetes in Adults diagnosis, Phenotype
- Abstract
Background: Latent autoimmune diabetes in adults (LADA) exhibits significant clinical heterogeneity, but the underlying causes remain unclear. The aim of this study was to investigate whether age of onset of LADA contributes to the observed clinical heterogeneity by comparing the clinical, metabolic, and immunogenetic characteristics between elderly and young LADA patients., Methods: The cross-sectional study included a total of 579 patients with LADA which was further divided into elderly LADA (E-LADA) group (n = 135, age of onset ≥60 years) and young LADA (Y-LADA) group (n = 444, age of onset <60 years). Age-matched subjects with type 2 diabetes were served as control (E-T2D group, n = 622). Clinical characteristics, serum autoantibodies, and HLA-DQ haplotypes were compared among these groups., Results: Compared with patients with Y-LADA, patients with E-LADA have better residual beta-cell function and higher level of insulin resistance (both P < .01), more metabolic syndrome characteristics, similar proportion of islet autoantibody positivity, and strikingly different HLA-DQ genetic background. In comparison with E-T2D patients, E-LADA patients tend to have similar metabolic syndrome prevalence, comparable C-peptide levels, and insulin resistance levels and share similar HLA-DQ genetic characteristics., Conclusions: Elderly LADA differs phenotypically and genetically from Y-LADA but has a clinical and genetic profile more similar to that of E-T2D. These distinct phenotypes could potentially help physicians better manage patients with E-LADA., (© 2018 John Wiley & Sons, Ltd.)
- Published
- 2019
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11. Distinct neutrophil counts and functions in newly diagnosed type 1 diabetes, latent autoimmune diabetes in adults, and type 2 diabetes.
- Author
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Huang J, Xiao Y, Zheng P, Zhou W, Wang Y, Huang G, Xu A, and Zhou Z
- Subjects
- Adolescent, Adult, Autoimmunity, Case-Control Studies, Cell Movement, Child, Female, Humans, Leukocyte Count, Male, Middle Aged, Neutrophils, Young Adult, Diabetes Mellitus, Type 1 blood, Diabetes Mellitus, Type 2 blood, Latent Autoimmune Diabetes in Adults blood
- Abstract
Background: Recent discoveries from animal models demonstrated that neutrophils can induce type 1 diabetes (T1D) through infiltrating into the islets. However, the evidence of their actions in T1D patients is relatively rare, and the change trend of neutrophil numbers and functions in different subtypes of diabetes has not been investigated., Methods: Patients with newly diagnosed T1D (n = 189), latent autoimmune diabetes in adults (LADA) (n = 86), T2D (n = 235), and healthy controls (n = 709) were enrolled. Circulating neutrophil counts were measured, and their correlations with clinical parameters were analysed. Neutrophils were isolated by density gradient centrifugation and magnetic bead cell sorting method. Neutrophil migration rate and chemokine levels in the blood were explored by trans-well and ELISA, respectively. Neutrophil phagocytosis rate, adhesion molecules and chemokine receptors expression were investigated by flow cytometry., Results: Compared with controls, neutrophil counts decreased in T1D patients but increased in T2D patients, with no change in LADA patients. The numbers showed a gradual increase trend from T1D, LADA to T2D. In autoimmune diabetes, neutrophil counts were associated with the number and titre of positive autoantibodies against β-cell antigens. No difference was found in neutrophil phagocytosis rate, but neutrophil migration in T1D patients was impaired and associated with CD62L expression, which was related closely to the titre of autoantibody., Conclusions: Neutrophil numbers and migration abilities displayed distinct levels in different types of diabetes. In T1D, CD62L seems to play an important role in the migration of neutrophils and β-cell autoimmunity., (© 2018 John Wiley & Sons, Ltd.)
- Published
- 2019
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12. Pancreatic volume is reduced in patients with latent autoimmune diabetes in adults.
- Author
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Lu J, Hou X, Pang C, Zhang L, Hu C, Zhao J, Bao Y, and Jia W
- Subjects
- Adult, Aged, Case-Control Studies, China, Cross-Sectional Studies, Diabetes Mellitus, Type 1 complications, Diabetes Mellitus, Type 2 complications, Female, Follow-Up Studies, Humans, Latent Autoimmune Diabetes in Adults etiology, Male, Middle Aged, Prognosis, Diabetes Mellitus, Type 1 physiopathology, Diabetes Mellitus, Type 2 physiopathology, Latent Autoimmune Diabetes in Adults physiopathology, Pancreas pathology
- Abstract
Aims: This study aimed to compare pancreatic volume and its clinical significance among patients with type 2 diabetes mellitus (DM), adult-onset type 1 DM and latent autoimmune diabetes in adults (LADA)., Methods: This is a cross-sectional study. One hundred twenty-six outpatients (68 with LADA and 58 with type 1 DM) and 158 inpatients (71 with type 2 DM and 87 non-diabetic controls) were recruited during May-July 2013 in Shanghai Jiao Tong University Affiliated Sixth People's Hospital. All the patients underwent abdominal computerized tomography; pancreatic volume was then calculated., Results: The mean pancreatic volume was highest in the controls, followed by those in patients with type 2 DM, LADA and type 1 DM. The pancreatic volume in LADA was comparable with that in type 2 DM but significantly greater than that in type 1 DM (p < 0.05). The pancreatic volume in patients with LADA was significantly correlated with sex, waist circumference, body surface area, body mass index, diastolic blood pressure and high-density lipoprotein cholesterol (all p < 0.05). The correlation between pancreatic volume and fasting C-peptide was high in patients with LADA (r = 0.643, p < 0.001) and moderate in patients with type 2 DM (r = 0.467, p < 0.001). The area under the receiver operating characteristic curve for pancreatic volume predictive of absolute insulin deficiency (FCP < 0.9 ng/mL) was 0.85 (0.76-0.94) in LADA., Conclusions: Pancreatic atrophy in LADA was less marked than in type 1 DM. Pancreatic atrophy may suggest reduced level of fasting C-peptide in patients with LADA. Copyright © 2016 John Wiley & Sons, Ltd., (Copyright © 2016 John Wiley & Sons, Ltd.)
- Published
- 2016
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13. Persistence of glutamic acid decarboxylase antibody (GADA) is associated with clinical characteristics of latent autoimmune diabetes in adults: a prospective study with 3-year follow-up.
- Author
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Huang G, Yin M, Xiang Y, Li X, Shen W, Luo S, Lin J, Xie Z, Zheng P, and Zhou Z
- Subjects
- Adult, Aged, Autoantibodies immunology, Case-Control Studies, Female, Follow-Up Studies, Humans, Latent Autoimmune Diabetes in Adults blood, Male, Middle Aged, Prognosis, Prospective Studies, Autoantibodies blood, Glucose Intolerance immunology, Glutamate Decarboxylase immunology, Latent Autoimmune Diabetes in Adults immunology
- Abstract
Background: Latent autoimmune diabetes in adults (LADA) is a form of autoimmune diabetes with heterogeneous features. This study aimed to investigate the persistent status of glutamic acid decarboxylase antibody (GADA) in patients with LADA and its association with clinical characteristics., Methods: This 3-year follow-up study enrolled 107 LADA and 40 type 2 diabetes mellitus (T2DM) patients from October 2005 to December 2013. GADA titer, epitopes, and clinical characteristics (including fasting C-peptide and HbA1c ) in LADA patients were assayed annually. The human leukocyte antigen DQ (HLA-DQ) genotypes were also analysed. The relationship between the persistence of GADA and the clinical characteristics was investigated in LADA patients., Results: After 3-year follow-up, 36.5% (39/107) LADA patients remained GADA positive (persistently positive group), 19.6% (21/107) patients fluctuated positively and negatively (fluctuating group), and 43.9% (47/107) patients became GADA negative, among which 61.7% (29/47) seroconversions occurred within 6 months of follow-up (transiently positive group). The GADA persistently positive group possessed higher titer of GADA than transiently positive group and fluctuant group (all p = 0.000), higher reactivities to middle and C-terminal regions of GAD65 than those in transiently positive group (p = 0.001 and p = 0.000, respectively), and lower baseline fasting C-peptide level than T2DM patients and transiently positive group [415(31-1862) vs 620(220-1658) pmol/L, p = 0.014; and 415(31-1862) vs 705(64-1541) pmol/L, p = 0.017, respectively]. The GADA transiently positive group retained a higher HbA1c level when compared with T2DM patients (p = 0.023). In addition, the three LADA groups shared similar frequencies of HLA-DQ susceptible haplotypes that were higher as compared with T2DM. The GADA persistently positive group had a higher annual declining rate in fasting C-peptide than T2DM patients [-14%(-174-33%) vs -1%(-27-28%), p = 0.007]., Conclusion: The LADA patients with GADA transient positivity account for a large proportion, whose clinical characteristics and HLA-DQ haplotypes are different from those of T2DM. The patients with high titer GADA and reactivities to GADA65 middle and C-terminal regions showed a persistent GADA positivity, in which a worse baseline and accelerated decline of β-cell function need early intervention in the practice. Copyright © 2016 John Wiley & Sons, Ltd., (Copyright © 2016 John Wiley & Sons, Ltd.)
- Published
- 2016
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14. Saxagliptin improves glycaemic control and C-peptide secretion in latent autoimmune diabetes in adults (LADA).
- Author
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Buzzetti R, Pozzilli P, Frederich R, Iqbal N, and Hirshberg B
- Subjects
- Adamantane therapeutic use, Adolescent, Adult, Aged, Blood Glucose metabolism, Female, Humans, Latent Autoimmune Diabetes in Adults metabolism, Latent Autoimmune Diabetes in Adults pathology, Male, Middle Aged, Young Adult, Adamantane analogs & derivatives, C-Peptide metabolism, Dipeptides therapeutic use, Dipeptidyl-Peptidase IV Inhibitors therapeutic use, Glucose Intolerance prevention & control, Latent Autoimmune Diabetes in Adults drug therapy
- Abstract
Background: To assess the efficacy and tolerability of saxagliptin and C-peptide secretion in patients with diagnosed type 2 diabetes classified as glutamic acid decarboxylase antibody (GADA)-positive or GADA-negative., Methods: Post hoc analysis of data pooled from five randomized, placebo-controlled, 24-week phase 3 studies (n = 2709) was conducted. We evaluated mean change from baseline at week 24 in HbA1c , fasting plasma glucose, postprandial plasma glucose, fasting and postprandial C-peptide, and HOMA2-%β and the proportion of patients achieving HbA1c < 7% (53 mmol/mol) at week 24., Results: Saxagliptin produced greater adjusted mean reductions from baseline in HbA1c versus placebo for GADA-negative [difference vs placebo (95% CI), -0.62% (-0.71% to -0.54%); -6.8 mmol/mol (-7.8, -5.9)] and GADA-positive patients [-0.64% (-1.01% to -0.27%); -7.0 mmol/mol (-11.0, -3.0)]. Consistently, saxagliptin produced a greater reduction from baseline in fasting plasma glucose and postprandial plasma glucose versus placebo in GADA-positive versus GADA-negative patients, and more patients achieved HbA1c < 7% (53 mmol/mol) with saxagliptin versus placebo in both GADA-negative and GADA-positive patients. Saxagliptin increased β-cell function as assessed by HOMA2-%β and postprandial C-peptide area under the curve from baseline in patients in both GADA-positive and GADA-negative patients. Adverse events and hypoglycaemic events were similar across treatment groups and GADA categories., Conclusion: Saxagliptin was effective in lowering blood glucose levels and generally well tolerated in GADA-positive patients. Interestingly, saxagliptin appears to improve β-cell function in these patients, although a longer treatment duration may be needed to confirm this finding., (Copyright © 2015 John Wiley & Sons, Ltd.)
- Published
- 2016
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15. Associations between clinical characteristics and chronic complications in latent autoimmune diabetes in adults and type 2 diabetes.
- Author
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Lu J, Hou X, Zhang L, Hu C, Zhou J, Pang C, Pan X, Bao Y, and Jia W
- Subjects
- Adult, Aged, Autoantibodies analysis, Autoimmune Diseases blood, Autoimmune Diseases immunology, Autoimmune Diseases physiopathology, Cardiovascular Diseases epidemiology, Cardiovascular Diseases immunology, Cardiovascular Diseases physiopathology, China epidemiology, Diabetes Mellitus blood, Diabetes Mellitus immunology, Diabetes Mellitus, Type 2 blood, Diabetes Mellitus, Type 2 immunology, Diabetes Mellitus, Type 2 physiopathology, Diabetic Angiopathies epidemiology, Diabetic Angiopathies immunology, Diabetic Cardiomyopathies epidemiology, Diabetic Cardiomyopathies immunology, Diabetic Cardiomyopathies physiopathology, Diabetic Neuropathies epidemiology, Diabetic Neuropathies immunology, Disease Progression, Female, Humans, Male, Microvessels physiopathology, Middle Aged, Prevalence, ROC Curve, Registries, Retrospective Studies, Risk Factors, Autoimmune Diseases complications, Diabetes Mellitus physiopathology, Diabetes Mellitus, Type 2 complications, Diabetic Angiopathies physiopathology, Diabetic Neuropathies physiopathology
- Abstract
Background: This study aimed to assess the associations between clinical characteristics and chronic complications in latent autoimmune diabetes in adults (LADA) and type 2 diabetes., Methods: This is a retrospective study. Our diabetes registry included 6975 patients aged 30-75 years old with phenotypic type 2 diabetes who underwent islet autoantibody screening between 2003 and 2012; 384 patients were identified to have LADA. Rates of chronic complications for LADA and type 2 diabetes were compared using a 1 : 2 matched design. Logistic models were fitted to identify the presence of chronic diabetic complications using clinical characteristics including gender, age, duration of diabetes, glycemic control and metabolic syndrome., Results: When duration of diabetes is <5 years, the prevalence of diabetic nephropathy (nephropathy; 12.2% versus 21.8%, p = 0.018) and diabetic retinopathy (retinopathy; 8.1% versus 15.9%, p = 0.011) were significantly lower in patients with LADA than in patients with type 2 diabetes; the prevalence of nephropathy and retinopathy were comparable between both groups when duration is ≥5 years. There was no significant difference in the prevalence of macrovascular complications between groups. The areas under the receiver operating characteristic curves based on the nephropathy and retinopathy models were larger for LADA than for type 2 diabetes (0.72 versus 0.61, p = 0.013; 0.76 versus 0.68, p = 0.056)., Conclusions: Patients with LADA had a lower prevalence of microvascular complications than patients with type 2 diabetes when the duration of diabetes was <5 years. Regression equation fitted by clinical characteristics can better predict the risk of microvascular complications in LADA than in type 2 diabetes., (Copyright © 2014 John Wiley & Sons, Ltd.)
- Published
- 2015
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16. Latent autoimmune diabetes in adults is perched between type 1 and type 2: evidence from adults in one region of Spain.
- Author
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Mollo A, Hernandez M, Marsal JR, Esquerda A, Rius F, Blanco-Vaca F, Verdaguer J, Pozzilli P, de Leiva A, and Mauricio D
- Subjects
- Adult, Aged, Autoantibodies blood, C-Peptide blood, Cross-Sectional Studies, Female, Humans, Insulin metabolism, Insulin Secretion, Male, Metabolic Syndrome diagnosis, Metabolic Syndrome immunology, Middle Aged, Spain epidemiology, Autoimmunity, Diabetes Mellitus, Type 1 diagnosis, Diabetes Mellitus, Type 1 immunology, Diabetes Mellitus, Type 2 diagnosis, Diabetes Mellitus, Type 2 immunology
- Abstract
Background: The aim of this study was to characterize the clinical characteristics and insulin secretion in adults with latent autoimmune diabetes in adults (LADA). We also compared these characteristics in subjects with antibody-negative type 2 diabetes (T2DM) or adult-onset type 1 diabetes (T1DM) to subjects with LADA., Methods: In this cross-sectional study, 82 patients with LADA, 78 with T1DM and 485 with T2DM were studied. Clinical and metabolic data, in particular those that related to metabolic syndrome, fasting C-peptide and islet-cell autoantibodies [glutamic acid decarboxylase (GADAb) and IA2 (IA2Ab)] were measured., Results: The frequency of metabolic syndrome in patients with LADA (37.3%) was higher than in those with T1DM (15.5%; p = 0.005) and lower than in patients with T2DM (67.2%; p < 0.001). During the first 36 months of the disease, the C-peptide concentration in LADA patients was higher than in subjects with T1DM but was lower than in T2DM patients (p < 0.01 for comparisons). Glycemic control in LADA patients (HbA1c 8.1%) was worse than in patients with T2DM (HbA1c 7.6%; p =0.007). An inverse association between GADAb titers and C-peptide concentrations was found in subjects with LADA (p < 0.001). Finally, LADA patients rapidly progressed to insulin treatment., Conclusions: As in other European populations, patients with LADA in Spain have a distinct metabolic profile compared with patients with T1DM or T2DM. LADA is also associated with higher impairment of beta-cell function and has worse glycemic control than in T2DM. Beta cell function is related to GADAb titers in patients with LADA., (Copyright © 2013 John Wiley & Sons, Ltd.)
- Published
- 2013
- Full Text
- View/download PDF
17. Zinc transporter 8 autoantibody (ZnT8A) could help differentiate latent autoimmune diabetes in adults (LADA) from phenotypic type 2 diabetes mellitus.
- Author
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Huang G, Xiang Y, Pan L, Li X, Luo S, and Zhou Z
- Subjects
- Adult, Aged, Aged, 80 and over, Autoimmune Diseases blood, Autoimmune Diseases epidemiology, Autoimmune Diseases immunology, Case-Control Studies, China epidemiology, Cross-Sectional Studies, Diabetes Mellitus, Type 2 blood, Diabetes Mellitus, Type 2 epidemiology, Diabetes Mellitus, Type 2 immunology, Diagnosis, Differential, Follow-Up Studies, Glutamate Decarboxylase antagonists & inhibitors, Humans, Male, Middle Aged, Prevalence, Radioligand Assay, Receptor-Like Protein Tyrosine Phosphatases, Class 8 antagonists & inhibitors, Sensitivity and Specificity, Zinc Transporter 8, Autoantibodies analysis, Autoimmune Diseases diagnosis, Cation Transport Proteins antagonists & inhibitors, Diabetes Mellitus, Type 2 diagnosis
- Abstract
Background: The ZnT8A is an independent marker for diagnosis of type 1 diabetes mellitus. We investigated the distribution and clinical features of ZnT8A positive latent autoimmune diabetes in adult (LADA) patients to explore the potential diagnostic application., Methods: A total of 3062 phenotypic T2DM patients were randomly selected from a national multicenter study - the LADA China Study. Radioligand binding assays were applied to detect the presence of ZnT8A, GADA and IA-2A. HbA1c , fasting C-peptide and serum lipid levels were followed up with ZnT8A positive patients., Results: The positive prevalence of ZnT8A, GADA and IA-2A in phenotypic T2DM patients was 1.99% (61/3062), 6.43% (197/3062) and 1.96% (60/3062), respectively. The ZnT8A positivity was lower than that of GADA(x² = 74.8, p < 0.001) but was comparable with that of IA-2A (p > 0.05). The positivity of ZnT8A in IA-2A positive patients was higher than that in GADA positive patients (38.3% vs. 10.7%, x² = 24.8, p < 0.001). On the basis of GADA and IA-2A positivity, the ZnT8A assay enhanced the diagnostic prevalence of LADA from 7.58 to 8.62%. The LADA patients who were positive for ZnT8A had higher systolic blood pressure when compared with GADA positive cases (p = 0.049) and higher total cholesterol levels when compared with antibody-negative T2DM patients (p = 0.035)., Conclusion: The detection of ZnT8A at the basis of GADA and IA-2A can improve diagnostic sensitivity of Chinese LADA., (Copyright © 2013 John Wiley & Sons, Ltd.)
- Published
- 2013
- Full Text
- View/download PDF
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