Publications by authors named "Li-Qiong Sun"

LincRNA-EPS is an important regulator in inflammation. However, the role of lincRNA-EPS in the host response against viral infection is unexplored. Here, we show that lincRNA-EPS is downregulated in macrophages infected with different viruses including VSV, SeV, and HSV-1.

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Acute pancreatitis (AP), an inflammatory disorder of the pancreas with a high hospitalization rate, frequently leads to systemic inflammatory response syndrome (SIRS) and multiple organ dysfunction syndrome (MODS). However, therapeutic targets for effective treatment and early intervention of AP are still urgently required to be identified. Here, we have observed that the expression of pancreatic lincRNA-EPS, a long intergenic non-coding RNA, is dynamically changed during both caerulein-induced AP (Cer-AP) and sodium taurocholate-induced severe AP (NaTc-SAP).

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In pear, sucrose was mainly distributed in vacuole; and the alternation of sucrose abundance was associated the change of vacuolar invertase (VI) activity during fruit storage. However, the molecular mechanism beneath such phenomenon has not been clarified until recently. For this, a combination of metabolite, enzyme activity, transcriptome, quantitative real-time PCR (qRT-PCR), bioinformation, subcellular localization, and transient overexpression assay was conducted in this study to identify the acid invertase 1 (PbrAc-Inv1) and invertase inhibitor 5 (PbrII5) involved in sucrose degradation during 'Housui' pear storage.

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Natural products, such as rosmarinic acid and apigenin, can act as xanthine oxidase inhibitors (XOIs) as well as superoxide anion scavengers, and have potential for treatment of diseases associated with high uric acid levels and oxidative stress. However, efficient simultaneous screening of these two bioactivities in natural products has been challenging. We have developed a novel method by assembling a multi-hyphenated high performance liquid chromatography (HPLC) system that combines a photo-diode array, chemiluminescence detector and a HPLC system with a variable wavelength detector, to simultaneously detect components that act as both XOIs and superoxide anion scavengers in natural products.

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An integrated antioxidant activity fingerprint, based on on-line screening methods for three reactive oxygen species (ROS: superoxide anion radical, hydrogen peroxide, and hydroxyl radical) was developed to comprehensively evaluate the quality of 12 batches of commercial tea. High-performance liquid chromatography (HPLC) coupled with a chemiluminescent detector was used to determine the antioxidant characteristics of a selection of teas as bioactivity fingerprints. An HPLC-electrospray ionization-mass spectrometry analysis was used to determine the chemical profiles of the teas in the chromatographic fingerprints.

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Article Synopsis
  • The study aimed to explore how seven process parameters affect the ethanol precipitation of Re Du Ning Injections, focusing on factors like concentrate density, temperature, ethanol content, flow rate, stir rate, precipitation time, and temperature.
  • Using a systematic approach, the researchers varied these parameters and analyzed the resulting products with HPLC fingerprint analyses and Principal Component Analysis (PCA) to assess the overall performance of the ethanol precipitation process.
  • The findings highlighted that concentrate density, ethanol content, and precipitation time are key factors that significantly influence the recovery of active compounds, offering valuable insights for pharmaceutical researchers looking to optimize processes and maintain product quality.
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Aim: To apply an integrated quality assessment strategy to investigate the quality of multiple Chinese commercial dry red wine samples.

Method: A comprehensive method was developed by combining a high performance liquid chromatography-diode array detector-chemiluminescence (HPLC-DAD-CL) online hyphenated system with an HPLC-ESI-MS technique.

Results: Chromatographic and H2O2-scavenging active fingerprints of thirteen batches of different, commercially available Chinese dry red wine samples were obtained and analyzed.

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Aim: To establish the Spectrum-Effect integrated fingerprint of Polygonum cuspidatum to evaluate the quality of P. cuspidatum.

Methods: An on-line HPLC-DAD-flow injection chemiluminescence (FICL) method was developed to investigate the quality of P.

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