Qiao L

References (9)

Title : Eco-friendly and efficient extraction of polyphenols from Ligustrum robustum by deep eutectic solvent assisted ultrasound - Qin_2023_Food.Chem_429_136828
Author(s) : Qin G , Zhang F , Ren M , Chen X , Liu C , Li G , Gao Q , Qiao L , Jiang Y , Zhu L , Guo Y , Wang G
Ref : Food Chem , 429 :136828 , 2023
Abstract : An eco-friendly and efficient extraction method using deep eutectic solvents assisted ultrasound extraction (DESs-UAE) for the polyphenols from Ligustrum robustum was developed. Among the 34 kinds of DESs prepared, tetraethyl ammonium bromide: 1,2,4-butanol (Teab: 1,2,4-But) was proved to be a suitable extraction solvent based on the extraction efficiency. The extraction parameters including temperature, water content, liquid-solid ratio were optimized with response surface methodology (RSM). Under the optimal conditions, the total phenolic content (TPC) and total flavonoid content (TFC) were 101.46 +/- 2.96 mg GAE/g DW and 264.17 +/- 5.39 mg RE/g DW, respectively. Furthermore, the extraction mechanism of DESs-UAE was investigated by extraction kinetics, molecular dynamic simulation and theory calculations of interaction. In particular, 9 kinds of polyphenols compounds from Ligustrum robustum were firstly identified by UPLC-Q-TOF-MS. Moreover, the recovered polyphenols exhibited significant antioxidant, alpha-glucosidase inhibition, acetylcholinesterase inhibition and anticancer activity.
ESTHER : Qin_2023_Food.Chem_429_136828
PubMedSearch : Qin_2023_Food.Chem_429_136828
PubMedID: 37478601

Title : Serum Cholinesterase, C-reactive Protein, Interleukin 6, and Procalcitonin Levels as Predictors of Mortality in Patients in the Intensive Care Unit - Liu_2023_Turk.J.Anaesthesiol.Reanim_51_408
Author(s) : Liu Q , Fan X , Cui W , Wang X , Zhang Z , Wang N , Qiao L
Ref : Turk J Anaesthesiol Reanim , 51 :408 , 2023
Abstract : OBJECTIVE: The prognostic utility of inflammatory markers in survival has been suggested in patients with cancer; however, evidence on their prognostic value in severely ill patients is very limited. We aimed to explore the prognostic value of cholinesterase (ChE), C-reactive protein (CRP), interleukin-6 (IL-6), and procalcitonin (PCT) in predicting mortality in patients from the intensive care unit (ICU). METHODS: Serum levels of ChE, CRP, IL-6 and PCT were measured in ICU patients from December 13(th), 2019 to June 28(th), 2022. We assessed the predictive power of ChE, CRP, IL-6, and PCT using the receiver operating characteristic (ROC) curves. Furthermore, we evaluated their diagnostic accuracy by comparing the areas under the ROC curve (AUCs) along with their corresponding 95% confidence intervals (CIs). The cut-off values were determined to dichotomise these biomarkers, which were then included in multivariable logistic regression models to examine their relationship with ICU mortality. RESULTS: Among 253 ICU patients included in the study, 66 (26%) died during the ICU stay. The AUCs to predict ICU mortality were 0.643 (95% CI, 0.566-0.719), 0.648 (95% CI, 0.633-0.735), 0.643 (95% CI, 0.563-0.723) and 0.735 (95% CI, 0.664-0.807) for ChE, CRP, IL-6 and PCT, respectively. After adjusting for age, sex and disease severity, lower ChE level (<3.668 x 10(3) U L(-1)) and higher levels of CRP (>10.546 mg dL(-1)), IL-6 (>986.245 pg mL(-1)) and PCT (>0.505 microg L(-1)) were associated with higher mortality risk, with odd ratios of 2.70 (95% CI, 1.32-5.54), 4.99 (95% CI, 2.41-10.38), 3.24 (95% CI, 1.54-6.78) and 3.67 (95% CI, 1.45-9.95), respectively. CONCLUSION: ChE, CRP, IL-6 and PCT were independent ICU mortality risk factors in severely ill patients. Elevated PCT levels exhibited better predictive value than the other three biomarkers that were evaluated.
ESTHER : Liu_2023_Turk.J.Anaesthesiol.Reanim_51_408
PubMedSearch : Liu_2023_Turk.J.Anaesthesiol.Reanim_51_408
PubMedID: 37876167

Title : Biogenic Selenium Nanoparticles Attenuate Abeta(25-35)-Induced Toxicity in PC12 Cells via Akt\/CREB\/BDNF Signaling Pathway - Qiao_2022_Neurotox.Res__
Author(s) : Qiao L , Chen Y , Dou X , Song X , Xu C
Ref : Neurotox Res , : , 2022
Abstract : Deposition of aggregated amyloid beta (Abeta) protein is considered to be a major causative factor that is associated with the development of oxidative stress and neuroinflammation in the pathogenesis of Alzheimer's disease (AD). Selenium nanoparticles (SeNPs) have been experimentally using for treatment of neurological disease due to their low toxicity, high bioavailability, and multiple bioactivities. This study was conducted to investigate the protective effects of biogenic SeNPs by Lactobacillus casei ATCC 393 against Abeta(25-35)-induced toxicity in PC12 cells and its association with oxidative stress and inflammation. The results showed that SeNPs had no cytotoxicity on PC12 cells. Moreover, SeNPs entered cells through cellular endocytosis, which effectively attenuated Abeta(25-35)-induced toxicity in PC12 cells. In addition, compared with Abeta(25-35) model group, SeNP pretreatment significantly enhanced the antioxidant capacity, inhibited the overproduction of reactive oxygen species (ROS), effectively regulated the inflammatory response, decreased the activity of acetylcholinesterase, significantly reduced the expression level of caspase-1 and the ratio of Bcl-2/Bax, and upregulated the expression level of p53. Furthermore, compared with Abeta(25-35) model group, SeNPs effectively promoted the phosphorylation of Akt and cAMP-response element-binding protein (CREB), and upregulated the expression level of brain-derived neurotrophic factor (BDNF). In addition, the Akt inhibitor (AKT inhibitor VIII, AKTi-1/2) could reverse the protective effects of SeNPs on PC12 cells. The Akt agonist (SC79) had a similar effect on PC12 cells as that of SeNPs. Overall, this study demonstrated that biogenic SeNPs can effectively alleviate the Abeta(25-35)-induced toxicity in PC12 cells via Akt/CREB/BDNF signaling pathway.
ESTHER : Qiao_2022_Neurotox.Res__
PubMedSearch : Qiao_2022_Neurotox.Res__
PubMedID: 36435923

Title : MicroRNA-199a-3p regulates proliferation and milk fat synthesis of ovine mammary epithelial cells by targeting VLDLR - Wang_2022_Front.Vet.Sci_9_948873
Author(s) : Wang J , Hao Z , Hu L , Qiao L , Luo Y , Hu J , Liu X , Li S , Zhao F , Shen J , Li M , Zhao Z
Ref : Front Vet Sci , 9 :948873 , 2022
Abstract : In our previous study, microRNA (miR)-199a-3p was found to be the most upregulated miRNA in mammary gland tissue during the non-lactation period compared with the peak-lactation period. However, there have been no reports describing the function of miR-199a-3p in ovine mammary epithelial cells (OMECs) and the biological mechanisms by which the miRNA affects cell proliferation and milk fat synthesis in sheep. In this study, the effect of miR-199a-3p on viability, proliferation, and milk fat synthesis of OMECs was investigated, and the target relationship of the miRNA with very low-density lipoprotein receptor (VLDLR) was also verified. Transfection with a miR-199a-3p mimic increased the viability of OMECs and the number of Edu-labeled positive OMECs. In contrast, a miR-199-3p inhibitor had the opposite effect with the miR-199a-3p mimic. The expression levels of three marker genes were also regulated by both the miR-199a-3p mimic and miR-199-3p inhibitor in OMECs. Together, these results suggest that miR-199a-3p promotes the viability and proliferation of OMECs. A dual luciferase assay confirmed that miR-199a-3p can target VLDLR by binding to the 3'-untranslated regions (3'UTR) of the gene. Further studies found a negative correlation in the expression of miR-199a-3p with VLDLR. The miR-199a-3p mimic decreased the content of triglycerides, as well as the expression levels of six milk fat synthesis marker genes in OMECs, namely, lipoprotein lipase gene (LPL), acetyl-CoA carboxylase alpha gene (ACACA), fatty acid binding protein 3 gene (FABP3), CD36, stearoyl-CoA desaturase gene (SCD), and fatty acid synthase gene (FASN). The inhibition of miR-199a-3p increased the level of triglycerides and the expression of LPL, ACACA, FABP3, SCD, and FASN in OMECs. These findings suggest that miR-199a-3p inhibited milk fat synthesis of OMECs. This is the first study to reveal the molecular mechanisms by which miR-199a-3p regulates the proliferation and milk fat synthesis of OMECs in sheep.
ESTHER : Wang_2022_Front.Vet.Sci_9_948873
PubMedSearch : Wang_2022_Front.Vet.Sci_9_948873
PubMedID: 35990270

Title : Rational design of a near-infrared fluorescence probe for highly selective sensing butyrylcholinesterase (BChE) and its bioimaging applications in living cell - Ma_2020_Talanta_219_121278
Author(s) : Ma J , Lu X , Zhai H , Li Q , Qiao L , Guo Y
Ref : Talanta , 219 :121278 , 2020
Abstract : In the current work, a near-infrared (NIR) fluorescent probe (CyClCP) was developed for fast (35 min), highly sensitive (LOD of 3.75 U/L) and selective response to BChE in vitro and in vivo. Upon the addition of BChE, CyClCP could be efficiently activated with remarkable NIR ((em) = 708 nm) fluorescence enhancement and obvious absorbance red shift (581 nm-687 nm). Specifically, according to the subtle differences structural features and substrate preference between BChE and its sister enzyme AChE, CyClCP was constructed by introducing chlorine atom at the ortho-position of the phenolic hydroxyl in the previous reported probe (CyCP). Fortunately, CyClCP exhibited better selectivity towards BChE over AChE compared with CyCP. This molecular design strategy was further rationalized by docking molecular of fluorescence probes (CyClCP and CyCP) and enzymes (BChE and AChE). Finally, CyClCP was membrane permeable and successfully applied to image endogenous BChE level in HepG2 and LO2 cells. Therefore, CyClCP could serve as a promising tool for BChE-related physiological function studies in complex biological systems.
ESTHER : Ma_2020_Talanta_219_121278
PubMedSearch : Ma_2020_Talanta_219_121278
PubMedID: 32887168

Title : Stem Cell Therapy for Alzheimer's Disease - Han_2020_Adv.Exp.Med.Biol_1266_39
Author(s) : Han F , Bi J , Qiao L , Arancio O
Ref : Advances in Experimental Medicine & Biology , 1266 :39 , 2020
Abstract : Alzheimer's disease (AD) is the most common neurodegenerative disease caused by eventually aggregated amyloid beta (Abeta) plaques in degenerating neurons of the aging brain. These aggregated protein plaques mainly consist of Abeta fibrils and neurofibrillary tangles (NFTs) of phosphorylated tau protein. Even though some cholinesterase inhibitors, NMDA receptor antagonist, and monoclonal antibodies were developed to inhibit neurodegeneration or activate neural regeneration or clear off the Abeta deposits, none of the treatment is effective in improving the cognitive and memory dysfunctions of the AD patients. Thus, stem cell therapy represents a powerful tool for the treatment of AD. In addition to discussing the advents in molecular pathogenesis and animal models of this disease and the treatment approaches using small molecules and immunoglobulins against AD, we will focus on the stem cell sources for AD using neural stem cells (NSCs); embryonic stem cells (ESCs); and mesenchymal stem cells (MSCs) from bone marrow, umbilical cord, and umbilical cord blood. In particular, patient-specific-induced pluripotent stem cells (iPS cells) are proposed as a future prospective and the challenges for the treatment of AD.
ESTHER : Han_2020_Adv.Exp.Med.Biol_1266_39
PubMedSearch : Han_2020_Adv.Exp.Med.Biol_1266_39
PubMedID: 33105494

Title : Controllable Growth of Core-Shell Nanogels via Esterase-Induced Self-Assembly of Peptides for Drug Delivery - Wu_2018_J.Biomed.Nanotechnol_14_354
Author(s) : Wu C , Hu W , Wei Q , Qiao L , Gao Y , Lv Y , Liu M , Li C , Wang X , Wang Q
Ref : J Biomed Nanotechnol , 14 :354 , 2018
Abstract : In this work, we developed an unexplored enzyme-responsive core-shell nanogel via the assembly of hydrogelators at the surface of silicon nanoparticles. The immobilized carboxylesterase at the surface of silicon nanoparticles can catalyse precursors into hydrogelators, self-assembling around the surface of silicon nanoparticles owing to its surface confinement effect. These novel phenomena can be confirmed by observation of their morphology and increased diameters through scanning electron microscopy, transmission electron microscopy and dynamic light scattering. Moreover, these resulting core-shell nanogels can achieve controlled growth of the gel layer by means of changing the concentrations of precursors. Because of their good biocompatibility, these nanogels can realize applications in enzyme-specific drug delivery as nanocarriers.
ESTHER : Wu_2018_J.Biomed.Nanotechnol_14_354
PubMedSearch : Wu_2018_J.Biomed.Nanotechnol_14_354
PubMedID: 31352931

Title : Acetylcholinesterase biosensor based on multi-walled carbon nanotubes-SnO2-chitosan nanocomposite - Chen_2015_Bioprocess.Biosyst.Eng_38_315
Author(s) : Chen D , Sun X , Guo Y , Qiao L , Wang X
Ref : Bioprocess Biosyst Eng , 38 :315 , 2015
Abstract : A sensitive amperometric acetylcholinesterase (AChE) biosensor was developed based on the nanocomposite of multi-walled carbon nanotubes (MWCNTs), tin oxide (SnO2) nanoparticles and chitosan (CHIT). Acetylcholinesterase (AChE) and Nafion were immobilized onto the nanocomposite film to prepare AChE biosensor for pesticide residues detection. The morphologies and electrochemistry properties of the surface modification were investigated using cyclic voltammetry, differential pulse voltammetry, and scanning electron microscopy, respectively. Compared with individual MWCNTs-CHIT, SnO2-CHIT and bare gold electrode, this nanocomposite showed the most obvious electrochemical signal in the presence of [Fe(CN)6](3-/4-) as a redox couple. Incorporating MWCNTs and SnO2 into 0.2 % CHIT solution can promote electron transfer, enhance the electrochemical response, and improve the microarchitecture of the electrode surface. All variables involved in the preparation process and analytical performance of the biosensor were optimized. Under optimized conditions, the AChE biosensor exhibited a wide linear range from 0.05 to 1.0 x 10(5 )mug/L and with a detection limit for chlorpyrifos was 0.05 mug/L. Based on the inhibition of pesticides on the AChE activity, using chlorpyrifos as model pesticide, the proposed biosensor exhibited a wide range, low detection limit, good reproducibility, and high stability. Using cabbages, lettuces, leeks, and pakchois as model samples, acceptable recovery of 98.7-105.2 % was obtained. The proposed method was proven to be a feasible quantitative method for chlorpyrifos analysis, which may open a new door ultrasensitive detection of chlorpyrifos residues in vegetables and fruits.
ESTHER : Chen_2015_Bioprocess.Biosyst.Eng_38_315
PubMedSearch : Chen_2015_Bioprocess.Biosyst.Eng_38_315
PubMedID: 25147124

Title : Discovery, SAR, and X-ray structure of novel biaryl-based dipeptidyl peptidase IV inhibitors - Qiao_2006_Bioorg.Med.Chem.Lett_16_123
Author(s) : Qiao L , Baumann CA , Crysler CS , Ninan NS , Abad MC , Spurlino JC , Desjarlais RL , Kervinen J , Neeper MP , Bayoumy SS , Williams R , Deckman IC , Dasgupta M , Reed RL , Huebert ND , Tomczuk BE , Moriarty KJ
Ref : Bioorganic & Medicinal Chemistry Lett , 16 :123 , 2006
Abstract : The discovery, SAR, and X-ray crystal structure of novel biarylaminoacyl-(S)-2-cyano-pyrrolidines and biarylaminoacylthiazolidines as potent inhibitors of dipeptidyl peptidase IV (DPP IV) are reported.
ESTHER : Qiao_2006_Bioorg.Med.Chem.Lett_16_123
PubMedSearch : Qiao_2006_Bioorg.Med.Chem.Lett_16_123
PubMedID: 16236500
Gene_locus related to this paper: human-DPP4