In this study, a manganese-cobalt bimetalli oxide composite material was innovatively prepared by the chemical co-precipitation method at low temperatures, in which activated carbon fibers (ACFs) as ...an organic carbon skeleton carrier could strengthen the stability of nanomaterials. The as-obtained composites were promising with rich chemical bonds, high redox properties, appreciable adsorption capacity, remarkable catalytic performance, and favorable stability. Experimental results showed that within 120 min, the composites could effectively degrade more than 90% of ciprofloxacin (CIP) by activating peroxomonosulfate (PMS). The electron transfer between the bimetal oxides improved the catalytic activation efficiency. The mechanism study suggested that SO4·−, ·OH, O2·−, and 1O2 are the main active substances, and combined with LSV and multimeter, it was found that there was electron transfer in the reaction system and Co3O4–Mn3O4@ACFs had the strongest electron transfer capability. In addition, the synthesized Co3O4–Mn3O4@ACFs have the potential for a wide range of applications due to the advantages of efficient PMS utilization efficiency and easy recovery properties. This work provided another perspective on the degradation of fluoroquinolone antibiotics in aqueous matrices in persulfate-based AOPs.
Display omitted
•Co3O4–Mn3O4@ACFs showed higher PMS utilization.•The richer chemical bonds formation was possibly due to low temperature.•Carbon support strengthened the stability of the nano-composites to further improve catalytic activity.•The reactive oxygen species（ROSs) produced included SO4·−, ·OH, O2·−and 1O2.•The non-radical pathway of electron transfer in the reaction system was also at work.
Full text
Available for:
GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
Inflammatory bowel disease (IBD) is a non‐specific chronic intestinal inflammatory disease, often presenting with abdominal pain, diarrhea, bloody stool, anorexia, and body loss. It is difficult to ...cure completely and a promising treatment is urgently needed. Natural compounds can offer promising chemical agents for treatment of diseases. Polydatin is a natural ingredient extracted from the dried rhizome of Polygonum cuspidatum, which has anti‐inflammatory, anti‐tumor, and dementia protection activities. The purpose of this study was to evaluate the therapeutic effect of polydatin on IBD and explore its possible mechanism. We found that polydatin could effectively suppress the differentiation of Th17 cells in vitro, but had no effect on the differentiation of Treg cells. Polydatin significantly alleviated colitis induced by dextran sulfate sodium (DSS) and 2, 4, 6‐trinitrobenzenesulfonic acid (TNBS) in mice, and dramatically decreased the proportion of Th17 cells in spleen and mesenteric lymph nodes. Mechanism investigations revealed that polydatin specifically inhibited signal transducer and activator of transcription 3 (STAT3) phosphorylation by directly binding to STAT3, leading to Th17 cell reduction and thereby alleviating colitis. These findings provide novel insights into the anti‐colitis effect of polydatin, which may be a promising drug candidate for the treatment of IBD.
Full text
Available for:
BFBNIB, FZAB, GIS, IJS, KILJ, NLZOH, NUK, OILJ, SAZU, SBCE, SBMB, UL, UM, UPUK
Single‐cell biophysical properties play a crucial role in regulating cellular physiological states and functions, demonstrating significant potential in the fields of life sciences and clinical ...diagnostics. Therefore, over the last few decades, researchers have developed various detection tools to explore the relationship between the biophysical changes of biological cells and human diseases. With the rapid advancement of modern microfabrication technology, microfluidic devices have quickly emerged as a promising platform for single‐cell analysis offering advantages including high‐throughput, exceptional precision, and ease of manipulation. Consequently, this paper provides an overview of the recent advances in microfluidic analysis and detection systems for single‐cell biophysical properties and their applications in the field of cancer. The working principles and latest research progress of single‐cell biophysical property detection are first analyzed, highlighting the significance of electrical and mechanical properties. The development of data acquisition and processing methods for real‐time, high‐throughput, and practical applications are then discussed. Furthermore, the differences in biophysical properties between tumor and normal cells are outlined, illustrating the potential for utilizing single‐cell biophysical properties for tumor cell identification, classification, and drug response assessment. Lastly, we summarize the limitations of existing microfluidic analysis and detection systems in single‐cell biophysical properties, while also pointing out the prospects and future directions of their applications in cancer diagnosis and treatment.
Full text
Available for:
BFBNIB, FZAB, GIS, IJS, KILJ, NLZOH, NUK, OILJ, SAZU, SBCE, SBMB, UL, UM, UPUK
494.
Abstracts of Articles
Chinese Journal of Integrated Traditional and Western Medicine,
12/1996
Journal Article
At present, there is a lack of imaging methods to monitor demyelination and myelin regeneration of central nervous system demyelinating diseases. All kinds of MRI techniques are used to measure ...demyelination indirectly and are vulnerable to other interference factors. PET is an imaging technique that can image central nervous system diseases at the molecular level. It can realize real⁃time imaging of function, metabolism, biochemistry and make up for the limitations of MRI. PET myelin imaging tracers have developed rapidly in recent years. There are currently three types of PET tracers targeting myelin: congo red derivatives, diphenylethylene derivatives and sulforaphane derivatives. The new multimodal medical imaging technology PET/MRI combines the advantages of PET molecular level imaging and MRI high soft tissue resolution to realize real⁃time fusion of anatomical structure and functional, metabolic, biochemical images. In the future, it may become an effective means to monitor demyelinating lesions of the
Full text
Available for:
FFLJ, NUK, ODKLJ, UL, UM, UPUK, VSZLJ
Autophagy has been reported to play protective and pathogenetic roles in cerebral ischemia/reperfusion (I/R)-induced neuronal injury. Our previous studies have shown that TP53-induced glycolysis and ...apoptosis regulator (TIGAR) ameliorates I/R-induced brain injury and reduces anti-cancer drug-induced autophagy activation. However, if TIGAR plays a regulatory role on autophagy in cerebral I/R injury is still unclear. The purpose of the present study is to investigate the role of TIGAR on I/R-induced autophagy activation and ischemic neuronal injury in vivo and in vitro stroke models using TIGAR-transgenic (tg-TIGAR) mice and TIGAR-knockout (ko-TIGAR) mice. The present study confirmed that autophagy was activated after I/R. Overexpression of TIGAR in tg-TIGAR mice significantly reduced I/R-induced autophagy activation and alleviated brain damage, while knockout of TIGAR in ko-TIGAR mice enhanced I/R-induced autophagy activation and exacerbated brain injury in vivo and in vitro. The different activity of autophagy in tg-TIGAR and ko-TIGAR primary neurons after OGD/R were largely reversed by knockdown or re-expression of TIGAR in these neurons. The autophagy inhibitor 3-methyladenine (3-MA) partly prevented exacerbation of brain damage induced by ko-TIGAR, whereas the autophagy inducer rapamycin partially abolished the neuroprotective effect of tg-TIGAR. Knockout of TIGAR reduced the levels of phosphorylated mTOR and S6KP70, which were blocked by 3-MA and NADPH after I/R and OGD/R in vivo and in vitro, respectively. Overexpression of TIGAR increased the levels of phosphorylated mTOR and S6KP70 under OGD/R condition, this enhancement effect was suppressed by rapamycin. In conclusion, our current data suggest that TIGAR protected against neuronal injury partly through inhibiting autophagy by regulating the mTOR-S6KP70 signaling pathway.
Display omitted
•Overexpression TIGAR in TIGAR transgenic mice is neuroprotective in ischemic stroke models.•The negative impact of TIGAR on I/R-induced autophagy activation partly contribute to its neuroprotection in ischemic stroke.•TIGAR regulates I/R-induced autophagy activation through the mTOR-S6KP70 signaling pathway and control of ROS.
Full text
Available for:
GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
We report phase-programmable Gaussian boson sampling (GBS) which produces up to 113 photon detection events out of a 144-mode photonic circuit. A new high-brightness and scalable quantum light source ...is developed, exploring the idea of stimulated emission of squeezed photons, which has simultaneously near-unity purity and efficiency. This GBS is programmable by tuning the phase of the input squeezed states. The obtained samples are efficiently validated by inferring from computationally friendly subsystems, which rules out hypotheses including distinguishable photons and thermal states. We show that our GBS experiment passes a nonclassicality test based on inequality constraints, and we reveal nontrivial genuine high-order correlations in the GBS samples, which are evidence of robustness against possible classical simulation schemes. This photonic quantum computer, Jiuzhang 2.0, yields a Hilbert space dimension up to ∼ 1043, and a sampling rate ∼ 1024 faster than using brute-force simulation on classical supercomputers.
Full text
Available for:
CMK, CTK, FMFMET, IJS, NUK, PNG, UL, UM
Hydrogen spillover is a well-known phenomenon in heterogeneous catalysis; it involves H
cleavage on an active metal followed by the migration of dissociated H species over an 'inert' support
. ...Although catalytic hydrogenation using the spilled H species, namely, spillover hydrogenation, has long been proposed, very limited knowledge has been obtained about what kind of support structure is required to achieve spillover hydrogenation
. By dispersing Pd atoms onto Cu nanomaterials with different exposed facets, Cu(111) and Cu(100), we demonstrate in this work that while the hydrogen spillover from Pd to Cu is facet independent, the spillover hydrogenation only occurs on Pd
/Cu(100), where the hydrogen atoms spilled from Pd are readily utilized for the semi-hydrogenation of alkynes. This work thus helps to create an effective method for fabricating cost-effective nanocatalysts with an extremely low Pd loading, at the level of 50 ppm, toward the semi-hydrogenation of a broad range of alkynes with extremely high activity and selectivity.
Full text
Available for:
FZAB, GEOZS, IJS, IMTLJ, KILJ, KISLJ, MFDPS, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, SBMB, SBNM, UKNU, UL, UM, UPUK, VKSCE, ZAGLJ
Facilitating phase conversion efficiency of Li polysulfides to Li2S and restraining the dissolution of Li polysulfides are critical for stable lithium–sulfur (Li–S) batteries. Herein, an in situ ...formed sulfiphilic superfine Fe2O3 nanocrystals confined in lithiophilic N‐doped microporous carbon (Fe2O3/N‐MC) is derived from one‐step hypercrosslinked polymerization. Uniquely, the dual active sites (Fe2O3 and N) in Fe2O3/N‐MC tend to form “FeS, LiO or LiN” bonding, and then synchronically enhancing the chemisorption and interface conversion ability of Li polysulfides. As a result, 80 wt% S is loaded on Fe2O3/N‐MC and the hybrid cathode delivers high mass capacity (730 mA h g‐1) and excellent cycling stability (87.1% capacity retention over 1000 cycles at 5.0 C). Especially, the cathode also exhibits a high reversible areal capacity of 3.69 mA h cm‐2 at a high areal loading (5.1 mg cm‐2) and a lean electrolyte/sulfur (E/S) ratio (7.5 µL mg‐1) over 500 cycles. This work is anticipated to deepen the comprehension of complex Li polysulfides interphase conversion processes and afford new thoughts for designing new host materials.
Facilitating phase conversion efficiency of Li polysulfides to Li2S and restraining the dissolution of Li polysulfides are critical for stable lithium–sulfur (Li–S) batteries. The as‐prepared Fe2O3/N‐microporous carbon (MC) is in favor of enhancing sulfur content, releasing volume expansion, immobilizing soluble lithium polysulfides (LiPSs), and optimizing Li2S nucleation, hence accommodating the S@Fe2O3/N‐MC cathode with excellent cycling stability.
Full text
Available for:
FZAB, GIS, IJS, KILJ, NLZOH, NUK, OILJ, SAZU, SBCE, SBMB, UL, UM, UPUK
The role of
-methyladenosine (m6A) modifications in renal diseases is largely unknown. Here, we characterized the role of
-adenosine-methyltransferase-like 3 (METTL3), whose expression is elevated in ...renal tubules in different acute kidney injury (AKI) models as well as in human biopsies and cultured tubular epithelial cells (TECs).
silencing alleviated renal inflammation and programmed cell death in TECs in response to stimulation by tumor necrosis factor-α (TNF-α), cisplatin, and lipopolysaccharide (LPS), whereas
overexpression had the opposite effects. Conditional knockout of
from mouse kidneys attenuated cisplatin- and ischemic/reperfusion (I/R)-induced renal dysfunction, injury, and inflammation. Moreover,
TGF-β-activated kinase 1 (MAP3K7) binding protein 3 was identified as a target of METTL3 by m6A methylated RNA immunoprecipitation sequencing and RNA sequencing. The stability of
was increased through binding of IGF2BP2 (insulin-like growth factor 2 binding protein 2) to its m6A-modified stop codon regions. The proinflammatory effects of TAB3 were then explored both in vitro and in vivo. Adeno-associated virus 9 (AAV9)-mediated
silencing attenuated renal injury and inflammation in cisplatin- and LPS-induced AKI mouse models. We further identified Cpd-564 as a METTL3 inhibitor that had better protective effects against cisplatin- and ischemia/reperfusion-induced renal injury and inflammation than
-adenosyl-l-homocysteine, a previously identified METTL3 inhibitor. Collectively, METTL3 promoted m6A modifications of
and enhanced its stability via IGF2BP2-dependent mechanisms. Both genetic and pharmacological inhibition of METTL3 attenuated renal injury and inflammation, suggesting that the METTL3/TAB3 axis is a potential target for treatment of AKI.
PDF
