Publications by authors named "Qian Tan"

Background: Submental fat (SMF) is a common aesthetic concern traditionally treated with liposuction. Non-surgical alternatives like injectable deoxycholic acid are gaining popularity. However, no related products have been clinically approved in China.

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Background: Extracellular matrix (ECM) and angiogenesis are critical controls of wound regeneration, and their dysfunction delays diabetes recovery. CXXC5 belongs to the CXXC protein family that can regulate the function of human dermal fibroblasts (HDFs) and human umbilical vein endothelial cells (HUVECs); However, awareness of its functional role remains limited.

Methods: Mice were divided into control (CON), diabetic (DM), diabetic + KY19382 (DM + KY19382), and diabetic + vehicle (DM + Vehicle) groups.

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Due to its multi-functionality, ecological water replenishment (EWR) has been an important measure for restoring aquifers. However, suitable prediction methods need to be selected for the unique fluctuation exhibited by groundwater level (GWL) in the process of EWR. This study employed a novel coupling model, RFR-MUS, to address this issue.

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Controlling degradation rate is essential for the biomedical application of biodegradable Zn alloys. Alloying with soluble elements is an effective way to regulate formation of second phases, which differ in potential from the Zn matrix. The potential difference exhibits positive or negative effects on corrosion resistance.

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Background: Delayed wound healing frequently occurs as a complication of diabetes. Diabetic wounds that are difficult to heal are associated with chronic, persistent inflammation, characterized by impaired efferocytosis and a sustained pro-inflammatory state of macrophages at the wound site. Sulforaphane (SFN), a bioactive compound found in cruciferous vegetables, possesses anti-inflammatory and antioxidant activities.

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Vascular calcification is a highly regulated process in cardiovascular disease (CVD) and is strongly correlated with morbidity and mortality, especially in the adverse stage of vascular remodeling after coronary artery bypass graft surgery (CABG). However, the pathogenesis of vascular graft calcification, particularly the role of endothelial-smooth muscle cell interaction, is still unclear. To test how ECs interact with SMCs in artery grafts, single-cell analysis of wild-type mice is first performed using an arterial isograft mouse model and found robust cytokine-mediated signaling pathway activation and SMC proliferation, together with upregulated endothelial tripartite motif 35 (TRIM35) expression.

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In prokaryotes, the non-bridging oxygen in the DNA sugar-phosphate backbone can be enzymatically replaced by a sulfur atom, resulting in phosphorothioate (PT) modification. However, the mechanism underlying the oxygen-to-sulfur substitution remains enigmatic. In this study, we discovered a hypercompact DNA phosphorothioation system, TdpABC, in extreme thermophiles.

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Background: Both anxiety and depression are prevalent among patients with chronic rhinosinusitis (CRS) and associated with poorer outcomes following treatment for CRS. However, the impact of treatment on CRS on mental health remains uncertain. Therefore, this study seeks to evaluate if surgical intervention for CRS may alleviate comorbid depression and anxiety.

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Article Synopsis
  • Intimal hyperplasia (IH) is a major issue in vascular interventions, and this study investigates the role of gangliosides GA2 in its development.
  • Researchers found that GA2 levels were significantly higher in atherosclerotic mouse aortae and plasma, and injecting GA2 worsened IH by interacting with macrophages.
  • The study reveals that GA2 activates caspase-4 and promotes pyroptosis in macrophages, suggesting a new mechanism for IH that could lead to potential diagnostic and treatment strategies.
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  • Receptor models help identify pollution sources in urban areas, but their accuracy for road deposited sediments hasn't been thoroughly evaluated.
  • This study compared four receptor models: positive matrix factorization (PMF), Unmix, chemical mass balance (CMB), and a stochastic approach (SCMD) using synthetic datasets and three error metrics.
  • The SCMD model proved to be the most stable and accurate, and when applied in Guangzhou, China, it found that vehicle exhaust was the largest contributor to heavy metal pollution on urban road surfaces.
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Diabetic ulcers (DUs) are a common and severe complication of diabetes, characterized by impaired wound healing due to a complex pathophysiological mechanism. Elevated levels of 11β-hydroxysteroid dehydrogenase type I (11β-HSD1) in wounds have been demonstrated to modulate glucocorticoid activity, leading to delayed skin cell proliferation and restricted angiogenesis, ultimately hindering wound healing. In this study, we propose an electrospun poly(ε-caprolactone) (PCL) nanofiber scaffold doped with the 11β-HSD1 inhibitor BVT2733 (BPs) to prevent 11β-HSD1 activity during the diabetic wound healing process.

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Phosphorothioation serves as a DNA backbone modification mechanism, wherein a sulfur atom substitutes the nonbridging oxygen atom within the phosphodiester, facilitated by the gene products of dndABCDE or sspABCD. The combination of dndABCDE with dndFGH forms a bona fide defense system, where the DndFGH protein complex exhibits DNA nickase and DNA translocase activities to prevent phage invasion. In this study, we identified that dndI, co-transcribed with dndFGH, can independently couple with iscS-dndBCDE as an anti-phage defense system.

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Background: Alzheimer's disease (AD), an age-progressive neurodegenerative disease, is featured by a relentless deterioration of cognitive abilities. In parallel with the hypotheses of Aβ and tau, microglia-mediated neuroinflammation is a core pathological hallmark of AD. Promoting the transition of microglia from M1 to M2 phenotype and inhibition of neuroinflammatory response provide new insights into the treatment of AD.

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The optimization of hit compounds into drug candidates is a pivotal phase in drug discovery but often hampered by cumbersome manual synthesis of derivatives. While automated organic molecule synthesis has enhanced efficiency, safety, and cost-effectiveness, achieving fully automated multistep synthesis remains a formidable challenge due to issues such as solvent and reagent incompatibilities and the accumulation of side-products. We herein demonstrate an automated solid-phase flow platform for synthesizing α-keto-amides and nitrile peptidomimetics, guided by docking simulations, to identify potent broad-spectrum antiviral leads.

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Article Synopsis
  • This study investigates factors that predict the survival of patients with nonmetastatic cutaneous melanoma on their limbs, aiming to create nomograms for overall survival (OS) and cancer-specific survival (CSS).
  • The research analyzed a large patient cohort (15,606 individuals) using various statistical methods to identify key prognostic factors, such as age, tumor thickness, and treatment types, and developed predictive nomograms that showed strong accuracy in tests.
  • The resulting nomograms serve as valuable tools for doctors to personalize risk management and improve outcomes for patients with this aggressive form of skin cancer.
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Apertures in pollen grains exhibit species-specific patterns and provide an ideal model for studying cell surface patterning. Pollen apertures are critical for cereal crop fertility, and while DEFECTIVE IN APERTURE FORMATION1 (OsDAF1) and INAPERTURATE POLLEN1 (OsINP1) have been documented to participate in pollen aperture formation in rice (Oryza sativa), the molecular transduction pathway regulating aperture formation is largely unknown. Here, we report that a leucine-rich-repeat receptor-like kinase (LRR-RLK), APERTURE MISSING1 (AM1), plays a key role in rice pollen aperture formation.

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  • Nitrogen (N) pollution on urban road surfaces is a significant concern, particularly in highly urbanized areas like Guangzhou, China.
  • The study identifies that nitrogen mainly exists as particulate organic nitrogen, and land use types, especially residential areas and urban villages, significantly contribute to higher total nitrogen (TN) build-up loads compared to traffic factors.
  • Using an artificial neural network (ANN) model, researchers classified hotspot areas for nitrogen pollution and estimated that TN flux from roads in Guangzhou represents 19% of the city's total urban domestic discharge, highlighting the need for improved stormwater runoff management.
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Background: The role of body mass index (BMI) in basal cell carcinoma (BCC) risk remains controversial, and limited information is available regarding the relationship between other physical measurements and BCC. Several recent studies have found a positive effect of adiposity on improved survival when obesity was determined solely by BMI (the "obesity paradox"). We hypothesize that body fat percentage (BFP) may serve as a more sensitive risk factor for BCC than BMI.

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Purpose: The step-cut osteotomy has been recognized as a valuable approach for addressing cubitus varus deformity, albeit one that necessitates technical proficiency. This study aims to evaluate the efficacy of the modified step-cut osteotomy technique in conjunction with patient-specific instruments by clinical and radiological assessment.

Methods: We conducted a retrospective review of patients who underwent modified step-cut osteotomy with the use of patient-specific instruments in conjunction with Kirschner wires fixation for the correction of cubitus varus deformity between April 2016 and April 2022.

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Reducing NO emissions is key to controlling greenhouse gases (GHG) in wastewater treatment plants (WWTPs). Although studies have examined the effects of dissolved oxygen (DO) on NO emissions during nitrogen removal, the precise effects of aeration rate remain unclear. This study aimed to fill this research gap by investigating the influence of dynamic aeration rates on NO emissions in an alternating anoxic-oxic sequencing batch reactor system.

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Background: Public health scholars informed by a dominant biomedical paradigm have in their 'rush to risk' emphasised the problematic aspects of chemsex. Meanwhile, critical chemsex scholars have attemped to destigmatise such sexual-chemical practices and foreground how they can be transformative. Taking these two perspectives as points of departure, we make a case for understanding chemsex vis-à-vis Deleuzean lines of flight.

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The commonality between various muscle diseases is the loss of muscle mass, function, and regeneration, which severely restricts mobility and impairs the quality of life. With muscle stem cells (MuSCs) playing a key role in facilitating muscle repair, targeting regulators of muscle regeneration has been shown to be a promising therapeutic approach to repair muscles. However, the underlying molecular mechanisms driving muscle regeneration are complex and poorly understood.

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Background: Congenital pseudarthrosis of the tibia (CPT) is a dominant health challenge in pediatric orthopedics. The essential process in the development of CPT is the limited capacity of mesenchymal stem cells (MSCs) derived from CPT to undergo osteogenic differentiation. Our research aimed to elucidate the role and mechanism of methyltransferase-like 3 (METTL3) in the osteogenic differentiation process of CPT MSCs.

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Objectives: This study aimed to explore the current status and trends of acupuncture for neurodegenerative diseases (NDs) in the last decade and provide new insights for researchers in future studies.

Methods: The publications concerning acupuncture treatment for NDs published between 2014 and 2023 were extracted from the Web of Science Core Collection. We used CiteSpace and VOSviewer to analyze data on numbers of annual publications, countries, institutions, cited journals, cited authors, cited references, keywords, and citation bursts about acupuncture for NDs.

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