Publications by authors named "Shujun Wan"

β-Hydroxybutyrate (β-OHB), the primary ketone body, is a bioactive metabolite that acts as both an energy substrate and a signaling molecule. Recent studies found that β-OHB inhibits the production of pro-inflammatory cytokines in macrophages, but its underlying molecular mechanisms have not yet been fully elucidated. Lysine β-hydroxybutyrylation (Kbhb), a post-translational modification mediated by β-OHB, plays a key role in regulating the expression and activity of modified proteins.

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Article Synopsis
  • * The study investigates how N6-methyladenosine (m6A) influences β-cell growth and how Met acts to protect these cells from oxidative damage caused by hydrogen peroxide (H2O2).
  • * Findings reveal that Met enhances methylation levels and the expression of METTL14, reducing cell death from H2O2, while manipulating METTL14 levels affects β-cell survival and suggests a link to the anti-apoptotic effects of Met through specific proteins.
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Background: Extrachromosomal circular DNAs (eccDNAs) exist in human blood and somatic cells, and are essential for oncogene plasticity and drug resistance. However, the presence and impact of eccDNAs in type 2 diabetes mellitus (T2DM) remains inadequately understood.

Methods: We purified and sequenced the serum eccDNAs obtained from newly diagnosed T2DM patients and normal control (NC) subjects using Circle-sequencing.

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Obesity is a complicated metabolic disease characterized by meta-inflammation in adipose tissues. In this study, we explored the roles of a new long non-coding RNA (lncRNA), HEM2ATM, which is highly expressed in adipose tissue M2 macrophages, in modulating obesity-associated meta-inflammation and insulin resistance. HEM2ATM expression decreased significantly in adipose tissue macrophages (ATMs) obtained from epididymal adipose tissues of high-fat diet (HFD)-induced obese mice.

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  • This study investigates the levels of urine N6-methyladenosine (m6A) in patients with type 2 diabetes mellitus (T2DM) and diabetic nephropathy (DN) to determine its clinical relevance.
  • It finds that urine m6A levels are significantly lower in DN patients compared to those with T2DM and normal glucose tolerance, with decreased levels correlating with the progression of DN.
  • The research suggests that urine m6A could be a potential biomarker for diagnosing diabetic nephropathy, showing good diagnostic sensitivity and specificity between different patient groups.
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Article Synopsis
  • - Methylglyoxal (MG), often elevated in type 2 diabetes, negatively impacts insulin secretion in pancreatic β cells by reducing levels of N-methyladenosine (mA) and METTL3, an important methylation regulator.
  • - In experiments with β-cell lines, decreased METTL3 expression due to MG treatment led to impaired glucose-stimulated insulin secretion (GSIS), while increasing METTL3 levels counteracted this impairment.
  • - The study highlights that METTL3 maintains mA levels and supports insulin secretion through the regulation of MafA, suggesting potential therapeutic pathways for improving insulin release in diabetes.
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Exenatide, a glucagon-like peptide-1 (GLP-1) receptor agonist, is a commonly used hypoglycemic agent in clinical practice; it inhibits reactive oxygen species-induced pancreatic β-cell apoptosis. N-methyladenosine (mA) is produced by the methylation of RNA N6 residues and has recently been shown to play a crucial role in the regulation of islet β-cell growth and development. However, the involvement of mA methylation in the β-cell protective effects of exenatide has not been clarified.

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Diabetic cardiomyopathy (DCM) is a serious complication of diabetes mellitus (DM). One of the hallmarks of the DCM is enhanced oxidative stress in myocardium. The aim of this study was to research the underlying mechanisms involved in the effects of dapagliflozin (Dap) on myocardial oxidative stress both in streptozotocin-induced DCM rats and rat embryonic cardiac myoblasts H9C2 cells exposed to high glucose (33.

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Aims: To investigate the alteration pattern and physiologic state of islet-specific miR-7 in the serum of patients with type 2 diabetes mellitus (T2DM) and T2DM-associated microvascular complications (T2DMC) and to evaluate its clinical significance.

Methods: The levels of serum miR-7 were firstly examined and compared in 76 T2DM patients, 76 T2DMC patients and 74 age-gender matched controls using RT-qPCR. Subsequently, the physiologic state of serum miR-7 was characterized by determining its concentrations in isolated exosomes and corresponding exosome-free samples from the same three cohorts' samples.

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To investigate the diagnostic utility of serum platelet factor 4 (PF4) levels and to assess its accuracy in detecting inflammatory bowel disease activity.This study included 45 patients with ulcerative colitis (UC), 45 patients with Crohn disease (CD), and 30 control subjects at Jinling Hospital between May 2014 and July 2015. Laboratory tests measured white blood count, C-reactive protein, erythrocyte sedimentation rate, and platelet count.

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Objective: To analyze serum levels of non-esterified fatty acids (NEFA) and albumin (ALB) in children with nephrotic syndrome (NS) and investigate the clinical significance of altered serum NEFA to ALB ratio in children with NS in acute and remission phases.

Methods: Serum levels of NEFA and ALB were measured in 55 NS children in acute phase, in 33 NS children in remission and in 122 healthy control children, and the ratio of NEFA to ALB was calculated. The other lipid/lipoprotein and renal function parameters were also analyzed in these children.

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Circulating microRNAs (miRNAs) are emerging biomarkers for type 2 diabetes mellitus (T2DM). However, a comprehensive characterization of the serum miRNA profile in patients with T2DM-associated microvascular disease (T2DMC) has rarely been reported. In this study, we obtained serum samples from 184 T2DM patients (92 with microvascular complications and 92 free of complications) and 92 age/gender-matched controls.

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The levels of miR-93, miR-191, and miR-499 have been reported to be up-regulated in the tissues of experimental traumatic brain injury (TBI) rat models. However, the clinical diagnostic and prognostic values of the serum signatures of these 3 miRNAs in TBI remain unclear. The purpose of this study was to determine the expression levels of these 3 microRNAs (miRNAs) in the sera of TBI patients and to evaluate their relationships with the severity and clinical outcome of TBI.

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