The photosensitive unit and conjugation play a significant role in photocatalytic performance of covalent organic frameworks (COFs). In this work, a series of COFs that introduced the phenyl phenanthridine as photosensitive unit with different planarity of linkages were synthesized and the common regulation between them for photocatalysis hydrogen evolution reaction (HER) was also studied. The results indicate that DHTB-PPD, with 2/3 planarity linkages (β-ketoenamine/imine is 2/3) and the phenyl phenanthridine as building blocks, shows the narrowest bandgap and the strongest charge separation efficiency.
View Article and Find Full Text PDFBackground: Research in functional asymmetry of Major Depressive Disorder (MDD) under different tasks is crucial for clinical diagnose.
Methods: Fifty individuals with MDD and twenty healthy controls (HCS) were recruited for hemodynamic data collection under four fNIRS tasks (Emotional picture, Verbal fluency, Fingering and Negative emotional picture description task). Integral values and functional connectivity strength were employed to probe neural activation and functional connectivity in frontal and temporal lobes in MDD.
Gridization is an emerging molecular integration technology that enables the creation of multifunctional organic semiconductors through precise linkages. While Friedel-Crafts gridization of fluorenols is potent, direct linkage among fluorene molecules poses a challenge. Herein, we report an achiral Pd-PPh-cataylized diastereoselective (>99:1 d.
View Article and Find Full Text PDFBackground: Hepatocellular carcinoma (HCC) has a high incidence and poor prognosis. Cuproptosis is a novel type of cell death, which differs from previously reported types of cell death such as apoptosis, autophagy, proptosis, ferroptosis, necroptosis, etc. Long non-coding RNAs (lncRNAs) play multiple roles in HCC.
View Article and Find Full Text PDFAsthma is a common chronic disease that is characterized by respiratory symptoms including cough, wheeze, shortness of breath, and chest tightness. The underlying mechanisms of this disease are not fully elucidated, so more research is needed to identify better therapeutic compounds and biomarkers to improve disease outcomes. In this present study, we used bioinformatics to analyze the gene expression of adult asthma in publicly available microarray datasets to identify putative therapeutic molecules for this disease.
View Article and Find Full Text PDFIn this paper, production system (PS) of shale oil is optimized according to production data and indoor experiments, including core and fluid tests. Results showed that: ① Pressure drop rate at wellhead is a reasonable reference for the determination of post-fracture shut-in duration (PFSID). When pressure at a wellhead of horizontal well is relatively stable and the pressure drop less than 0.
View Article and Find Full Text PDFCottonseed protein concentrate (CPC) is a potential non-food protein source for fishmeal replacement in fish feed. However, a high inclusion level of CPC in diets may have adverse effects on the metabolism and health of carnivorous fish. This study aimed to investigate CPC as a fishmeal alternative in the diet of rainbow trout based on growth performance, blood metabolites, and intestinal health.
View Article and Find Full Text PDFThe alkaline components in red mud represent one of the crucial factors restricting its application, especially for the construction and building industry. The phase state of alkaline components has a significant influence on the dealkalization of red mud. In this work, an environmentally friendly acid leaching strategy is proposed by controlling the phase transformation of red mud during active roasting pretreatment.
View Article and Find Full Text PDFAllergol Immunopathol (Madr)
October 2021
Background: Emerging evidence shows that circular RNAs (circRNAs) participate in the pathogenesis of multiple immune diseases. However, few studies have focused on the mechanisms of circRNAs involved in allergic rhinitis (AR).
Methods: This study performed an RNA sequence (RNA-seq) profiling to identify the expression of circRNAs in nasal mucosa from ovalbumin-induced AR murine models and normal controls.
Zhongguo Zhong Yao Za Zhi
November 2020
Based on the previous study of compound liquorice microemulsion, this paper aims to prepare the compound liquorice microemulsion gel and investigate its pharmacodynamics of chronic eczema. The type, dosage and adding method of gel matrix, and formula dosage of humectant were optimized by single factor method to obtain the formula and preparation technique of the gel. With glycyrrhizic acid, glycyrrhetin and oxymatrine used as evaluation indexes, the Franz diffusion cell method was adopted to monitor the in vitro release profile of the gel.
View Article and Find Full Text PDFLin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
August 2020
Drug induced sleep endoscopy(DISE) is a useful tool to locate the upper airway obstructions in patients with obstructive sleep apnea syndrome(OSAS). The goal of our research was to compare the sites, degree and patterns of upper airway obstruction detected by DISE versus endoscopy in awake children. The benefit of DISE-mediated upper airway surgery in pediatric OSAS was evaluated.
View Article and Find Full Text PDFNowadays, for lanthanide fluorescence thermometry, high relative temperature sensitivity () and wide sensing range are urgently required in practical applications. Herein, a Pr-doped scandate (Pr:CaScO) luminescent thermometer is proposed, and the related crystal-field splitting of Pr ions is systematically discussed. The 4f5d-4f and 4f-4f emissions of Pr ions in CaScO basically present positive and negative correlation relationships with the increase in temperature, respectively.
View Article and Find Full Text PDFThis study was designed to investigate the chemical characterization of scrophularia ningpoensis polysaccharides (SNP) and its protective activity on the cerebral ischemia/reperfusin injury (CIRI) rats. SNP was successfully isolated and fractionated by anion exchange chromatography and gel filtration into different factions, namely SNP1, SNP2, SNP3, SNP2-A and SNP2-B. SNP2-A is consisted of mannose (Man), rhamnose (Rha), glucuronic Acid (Glu A), galacturonic Acid (Gal A), glucose (Glu), galactose (Gal), xylose (Xyl) and arabinose (Ara).
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
September 2018
Guppy (Poecilia reticulata) is a promising model organism in toxicological studies, and vitellogenin (Vtg) is a commonly used biomarker for environmental estrogens. Although an ELISA for guppy Vtg has been developed previously, we found that guppy had two forms of Vtgs. In this study, two Vtgs were characterized and enzyme-linked immunosorbent assays (ELISAs) for each Vtg were developed.
View Article and Find Full Text PDFZhongguo Zhong Yao Za Zhi
March 2018
In order to increase the solubility of essential oil in compound licorice microemulsion and improve the efficacy of the decoction for treating chronic eczema, this experiment intends to prepare the decoction into microemulsion. The essential oil was used as the oil phase of the microemulsion and the extract was used as the water phase. Then the microemulsion area and maximum ratio of water capacity was obtained by plotting pseudo-ternary phase diagram, to determine the appropriate types of surfactant and cosurfactant, and Km value-the mass ratio between surfactant and cosurfactant.
View Article and Find Full Text PDFObjective: The aim of this study was to develop a novel W/O microemulsion for a natural extract of Wen-Luo-Tong (WLT) containing mainly icariin, hydroxysafflor yellow A (HSYA) and gallic acid to be applied to skin as a potential treatment for peripheral neuropathy.
Methods: The oil phase was selected on the basis of affinity with the surfactant and co-surfactant. Pseudo-ternary diagrams were constructed to optimize microemulsions and finally stability studies were performed on the selected formulations.
Guppy (Poecilia reticulata) is an ideal model for studying environmental estrogens, and its large caudal fin has a high capacity to regenerate. This study analyzed the feasibility of caudal fin for detecting vitellogenin (Vtg), the most commonly used biomarker of environmental estrogens. Firstly, a sandwich ELISA for guppy Vtg was developed using purified lipovitellin and its antibody and it had a working range of 7.
View Article and Find Full Text PDFTo prepare pellets of supercritical fluid extraction (SFE) of Angelica Sinensis Radix by using the ionic crosslinking method, and the drug loading and encapsulation efficiency were used as the index to investigate the multiple factors which may impact the drug loading and encapsulation efficiency. Box-Behnken design and response surface analysis method were then taken to optimize the prescription of pellets and study the coating technology. Through the study on the release of pellets in vitro, an optimal coating technology and prescription of colon-specific pellets of Angelica Sinensis Radix SFE were selected and their colon targeting was evaluated.
View Article and Find Full Text PDFComp Biochem Physiol C Toxicol Pharmacol
February 2017
Vitellogenin (Vtg) in zebrafish (Danio rerio) is a core biomarker for screening environmental estrogens in test guidelines of the Organization for Economic Cooperation and Development. To accurately quantify zebrafish Vtg, lipovitellin (Lv), the main Vtg-derived yolk protein, was used as the antigen to establish a sandwich enzyme-linked immunosorbent assay (ELISA). The purified Lv was a phospholipoglycoprotein with apparent molecular weight of ~445kDa, and separated into three polypeptides corresponding to ~117, ~102, and ~23.
View Article and Find Full Text PDFAims: In this report, the transport of ginkgolides with different lipophilicities was investigated using an hCMEC/D3 cell monolayer as a blood-brain barrier (BBB) cell model in vitro in an attempt to explain ginkgolide transport path mediated by lipophilicity.
Main Methods: The log P values of ginkgolides were determined by measuring the distribution of the molecule between oil and water. Additionally, the cytotoxicity of ginkgolides on hCMEC/D3 cells was assayed with the MTT method.
Mitochondria and oxidative stress play important roles in neuronal cell death associated with cerebral ischemia. Elevated level of reactive oxygen species (ROS) and mitochondrial dysfunction are thought to be responsible for cerebral ischemia injury along with neural cells death through several apoptotic mechanisms. In this study, exposure of rat pheochromocytoma (PC12) cells to hydrogen peroxide (H2O2) at the concentration of 0.
View Article and Find Full Text PDFA series of studies have recently demonstrated that the release of interleukin 1β induced by monosodium urate crystals is central to the experimental gouty arthritis. Elaeagnus pungens has been traditionally used for the treatment of gouty arthritis in China for more than thousands years. However, there is still little known about the active ingredients and mechanisms of E.
View Article and Find Full Text PDFFour new cycloartane glycosides, 3-O-β-D-xylopyranosyl-(1 → 6)-β-D-glucopyranosyl-(1 → 4)-β-D-fucopyranosyl (22S,24Z)-cycloart-24-en-3β,22,26-triol 26-O-(6-O-acetyl)-β-D-glucopyranoside (1), 3-O-α-L-arabinopyranosyl-(1 → 6)-β-D-glucopyranosyl-(1 → 4)-β-D-fucopyranosyl (22S,24Z)-cycloart-24-en-3β,22,26-triol 26-O-(6-O-acetyl)-β-D-glucopyranoside (2), 3-O-β-D-glucopyranosyl (24S)-cycloartane-3β,16β,24,25,30-pentaol 25-O-β-D-glucopyranosyl-(1 → 6)-β-D-glucopyranoside (3) and 3-O-β-D-glucopyranosyl (24S)-cycloartane-3β,16β,24,25,30-pentaol 25-O-β-D-glucopyranosyl-(1 → 4)-β-D-glucopyranoside (4), were isolated from the aerial parts of Thalictrum fortunei. Their structures were established on the basis of extensive NMR and HR-ESI-MS analyses, along with acid hydrolysis.
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