Publications by authors named "Jia Teng Sun"

Background: Mitochondrial dysfunction is linked to myocardial ischemia-reperfusion (I/R) injury. Checkpoint kinase 1 (CHK1) could facilitate cardiomyocyte proliferation, however, its role on mitochondrial function in I/R injury remains unknown.

Methods: To investigate the role of CHK1 on mitochondrial function following I/R injury, cardiomyocyte-specific knockout/overexpression mouse models were generated.

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  • The peroxisome is an organelle that plays a key role in various metabolic functions, and PEX3 is a crucial regulator of these processes.
  • Researchers found that knocking out PEX3 specifically in heart cells (Pex3-KO) leads to an imbalance in redox homeostasis and disrupts heart cell growth and development.
  • The study suggests that PEX3 aids in heart repair by affecting plasmalogen metabolism and influencing the AKT/GSK3β signaling pathway, indicating it could be an innovative target for therapies aimed at repairing heart damage.
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  • The study investigates the effects of rhCHK1, a recombinant protein, on improving heart cell survival and growth after ischemia/reperfusion injury in pigs, with findings suggesting enhanced cardiac repair and function.
  • Researchers found that injecting rhCHK1 not only stimulated heart cell division and reduced inflammation within days but also improved overall heart function and minimized damage over a month post-injury.
  • The mechanism behind these effects involves CHK1 binding to and activating specific sites on the PKM2 protein, leading to changes in metabolism that support heart cell renewal and repair processes.
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  • Cadmium (Cd) is a harmful heavy metal associated with a higher risk of cardiovascular disease (CVD), but its effects on subclinical myocardial injury (SC-MI) in older adults without CVD were not well understood.
  • A study analyzed 4,269 participants aged 50 and older from the NHANES III, revealing a significant association between urinary cadmium (U-Cd) levels and cardiac injury scores.
  • Results indicated that individuals with the highest U-Cd levels had a significantly greater chance of SC-MI, particularly among those with hypertension, suggesting that U-Cd might be a new risk factor for SC-MI.
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Background: Calcific aortic valve disease (CAVD) is a progressive disease resulting in severe calcific aortic stenosis (AS), and there is increasing interest in the discovery of novel biomarkers to identify patients with potential future calcific AS at an early stage. This study aimed to determine whether follistatin-like 1 (FSTL1) is associated with calcific AS events and its exact role in aortic valve calcification.

Methods: A prospective observational cohort study involving 656 patients was performed to investigate the relationship between serum FSTL1 and calcific AS incidence during a follow-up of 5 years.

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  • Pyroptosis, a form of cell death, is linked to cardiovascular diseases, but the role of long noncoding RNAs (lncRNAs) in regulating this process in heart cells is not well understood.
  • This study investigates the lncRNA FGF9-associated factor (FAF) and its effects on reducing cell death in acute myocardial infarction (AMI) by examining its interaction with miR-185-5p and PAK2 in heart cells exposed to low oxygen.
  • Findings indicate that higher levels of lncRNA FAF can decrease pyroptosis in heart cells, improve cell survival, and lessen damage during AMI, suggesting that the FAF/miR-185-5p/PAK2
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  • Adult mammals struggle with heart regeneration after injury, while neonatal mice can fully recover their heart tissue within a week.
  • Understanding factors that enhance the growth of heart cells (cardiomyocytes) is vital for creating effective cardiac regeneration treatments.
  • This study found that the protein MNK2 significantly boosts cardiomyocyte proliferation, both in lab settings and in living mice, by activating a pathway involving eIF4E and cyclin D1, highlighting MNK2 as a promising target for heart repair therapies.
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Background The pericoronary fat attenuation index (FAI) is assessed using standard coronary computed tomography angiography, and it has emerged as a novel imaging biomarker of coronary inflammation. The present study assessed whether increased pericoronary FAI values on coronary computed tomography angiography were associated with vulnerable plaque components and their intracellular cytokine levels in patients with non-ST elevation acute coronary syndrome. Methods and Results A total of 195 lesions in 130 patients with non-ST elevation acute coronary syndrome were prospectively included.

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  • The neonatal heart has a strong ability to regenerate shortly after birth, and SGK3 (a protein kinase) is significantly active in the heart following myocardial infarction.
  • This research investigates how SGK3 affects cardiomyocyte (heart cell) proliferation and cardiac repair during situations like heart surgery or oxygen deprivation.
  • Results show that SGK3 promotes heart cell growth and recovery by regulating specific genes and proteins involved in the cell cycle and reducing certain negative regulators, highlighting its importance in heart regeneration after injury.
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Background: High D-dimer (DD) is associated with short-term adverse outcomes in patients with acute coronary syndrome (ACS). In ACS patients who underwent percutaneous coronary intervention (PCI), however, the value of DD (or combined with neutrophil to lymphocyte ratio [NLR]) to predict long-term major adverse cardiovascular events (MACEs) has not been fully evaluated.

Methods: Patients diagnosed with ACS and receiving PCI were included.

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Emerging studies have described and analyzed epidemiological, clinical, laboratory, and radiological features of COVID-19 patients. Yet, scarce information is available regarding the association of lipid profile features and disease severity and mortality. We conducted a prospective observational cohort study to investigate lipid profile features in patients with COVID-19.

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Background: Increasing evidence showed that carbamylated lipoprotein accelerated atherosclerosis. However, whether such modification of high-density lipoprotein (HDL) particles alters in type 2 diabetes mellitus (T2DM) patients and facilitates vascular complications remains unclear. We aimed to investigate the alteration of the carbamylation in HDL among T2DM patients and clarify its potential role in atherogenesis.

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Calcific aortic valve disease (CAVD) is characterized by progressive mineralization of the aortic valve. Lipid infiltration and oxidative stress are the driving forces for the initiation and development of this disease. However, it remains unknown whether oxidized high-density lipoprotein (ox-HDL) plays a role in the mineralization of aortic valve interstitial cells (AVICs).

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  • Long noncoding RNAs (lncRNAs), particularly lncRNA FAF, are being studied for their significant roles in cardiovascular diseases, specifically in regulating protein expression in heart cells.
  • Researchers performed high-throughput RNA sequencing to identify changes in lncRNAs and messenger RNAs in rats with acute myocardial infarction (AMI) compared to healthy controls, revealing that lncRNA FAF levels were decreased in the affected tissues.
  • The study found that overexpressing lncRNA FAF could protect cardiomyocytes from apoptosis (cell death) during ischemia and hypoxia, potentially by enhancing the expression of FGF9, which also plays a protective role via specific signaling pathways.
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Aims: Impaired anti-inflammatory ability of high-density lipoprotein (HDL) has been demonstrated in patients with type-2 diabetes mellitus (T2DM). However, whether HDL from patients with diabetic nephropathy (DN) suffers additional damage remains unknown. This study compared the anti-inflammatory capacities of HDL from healthy controls, T2DM patients with normal renal function, and T2DM patients with DN.

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Background: Cyanate has recently gained attention for its role in the pathogenesis of vascular injury. Nonetheless, the effect of cyanate on angiogenesis remains unclear.

Methods And Results: In this study, we demonstrated that oral administration of cyanate impaired blood perfusion recovery in a mouse hind-limb ischemia model.

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Although high-density lipoprotein (HDL) can exhibit anti-inflammatory properties, these potent activities can become deficient and even transform into proinflammatory effects under various pathophysiological states. We investigated the effect of diabetic HDL on the inflammatory response in human monocytes and its relation to the existence of coronary artery disease (CAD) in patients with type 2 diabetes mellitus (DM). HDL was isolated from DM patients with (n = 61) or without (n = 31) CAD (diameter stenosis ≥50%) and healthy controls (n = 40).

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Purpose: This study was designed to compare the survival outcomes of temozolomide-based chemoradiotherapy (TMZ + RT) vs radiotherapy alone (RT-alone) for low-grade gliomas (LGGs) after surgical resection.

Patients And Methods: In this retrospective analysis, we reviewed postoperative records of 69 patients with LGGs treated with TMZ + RT (n=31) and RT-alone (n=38) at the Shandong Cancer Hospital Affiliated to Shandong University between June 2011 and December 2013. Patients in the TMZ + RT group were administered 50-100 mg oral TMZ every day until the radiotherapy regimen was completed.

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It is thought that carbamylated modification plays a crucial role in the development and progression of cardiovascular disease (CVD) in patients with end-stage renal disease (ESRD). However, information on the biological effects of carbamylated high-density lipoprotein (C-HDL) in ESRD is poor. The present study investigated the carbamylation level of HDL in ESRD and the effects of C-HDL on endothelial repair properties.

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Objective: To investigate whether apolipoprotein A (apoA)-I glycation and paraoxonase (PON) activities are associated with the severity of coronary artery disease (CAD) in patients with type 2 diabetes mellitus (T2DM).

Methods: Relative intensity of apoA-I glycation and activities of high-density lipoprotein (HDL)-associated PON1 and PON3 were determined in 205 consecutive T2DM patients with stable angina with (n = 144) or without (n = 61) significant CAD (luminal diameter stenosis ≥ 70 %). The severity of CAD was expressed by number of diseased coronary arteries, extent index, and cumulative coronary stenosis score (CCSS).

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Objective: To evaluate whether glycation of high-density lipoprotein (HDL) increases cardiovascular risk in patients with type 2 diabetes mellitus by altering its anti-atherogenic property.

Data Sources: Data cited in this review were obtained mainly from Pubmed and Medline in English from 2000 to 2013, with keywords "glycation", "HDL", and "atherosclerosis". Study selection Articles regarding glycation of HDL and its role in atherogenesis in both humans and experimental animal models were identified, retrieved and reviewed.

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