Wei Sheng Yan Jiu
November 2024
Objective: To explore the differences in fat and fatty acids content between freshwater and saltwater fish.
Methods: The fat and fatty acids content in 83 fish meat samples from four regions(Hainan, Jiangsu, Fujian, and Guangxi) were detected by national standard method. Mann-Whitney U tests and t-tests were used to compare the differences in fat and major fatty acid content between freshwater and saltwater fish.
Currently, dogs, especially stray dogs, and/or wild animals are the main sources of rabies transmission, and oral vaccination is the most practical way to control rabies in these animals. Safety and efficacy are two key criteria for developing oral vaccines. Concerning the efficacy of oral vaccines, degradation of immunogens by gastrointestinal fluid is a major challenge, resulting in suboptimal immune responses after vaccination.
View Article and Find Full Text PDFPurpose: This study aimed to assess the safety and viability of combining branched stent graft with fenestrated thoracic endovascular aortic repair (TEVAR) in treating aortic arch lesions.
Materials And Methods: The cohort included patients presenting with aortic arch lesions who underwent treatment with a combination of branched stent graft and fenestrated TEVAR between July 2020 and November 2022. Technical success was defined as the precise deployment of the stent graft, maintenance of branch vessel patency, and the absence of type I endoleak.
Objective: Pregnancy complicated with type B aortic dissection is a rare but devastating condition. Guidelines for managing this condition are lacking. We present our observation and experiences in managing five pregnant women with complicated type B aortic dissection in the second or third trimesters, aiming to gain insights that can aid in proposing an appropriate management strategy.
View Article and Find Full Text PDFIn single-atom catalysts, the atomically dispersed metal sites are pivotal for oxygen molecule activation. We hypothesize that dispersing single Mn atoms on TiO nanosheets may improve the photocatalytic oxidation of formaldehyde (HCHO) in the gas phase under ambient conditions. Density function theory (DFT) and experimental experiments were carried out to single Mn atoms not only improved the transfer of localized electrons and photogenerated electrons but also enhanced the activation/dissociation of O to generate monoatomic oxygen ions (O) as the final reactive oxygen species (ROS).
View Article and Find Full Text PDFTriclocarban (TCC), a novel antimicrobial agent found in personal care products, has been extensively detected in marine environments. However, research on the toxic effects of TCC on marine organisms remains inadequate. This study delved into the subchronic toxic effects of TCC on the early life stages of marine medaka (Oryzias melastigma, O.
View Article and Find Full Text PDFTwisted intramolecular charge transfer (TICT) is a fluorescence quenching mechanism that occurs in donor-acceptor (D‒A) molecules. Chemical engineering research into TICT regulation over the past 50 years has primarily focused on manipulating steric factors by introducing alkyl groups at the D-A junction (pre-twisting). Herein, we report a significant advance in TICT-based probes through the introducing of H-bond as an efficient strategy for suppressing TICT.
View Article and Find Full Text PDFThoracic aortic dissection (TAD) is one of the cardiovascular diseases with high incidence and fatality rates. Vascular smooth muscle cells (VSMCs) play a vital role in TAD formation. Recent studies have shown that extracellular S100A4 may participate in VSMCs regulation.
View Article and Find Full Text PDFEnzymes in uracil-DNA glycosylase (UDG) superfamily are involved in removal of deaminated nucleobases such as uracil, methylcytosine derivatives such as formylcytosine and carboxylcytosine, and other base damage in DNA repair. UDGX is the latest addition of a new class to the UDG superfamily with a sporadic distribution in bacteria. UDGX type enzymes have a distinct biochemical property of cross-linking itself to the resulting AP site after uracil removal.
View Article and Find Full Text PDFCooking methods can change the composition of foods and have important effects on human health. The Chinese people have developed many distinct and unique cooking methods. However, the daily cooking patterns of Chinese people and the characteristics and evolution of trends in cooking patterns commonly used by Chinese consumers remain unclear.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
December 2023
BiOCl photocatalysis shows great promise for molecular oxygen activation and NO oxidation, but its selective transformation of NO to immobilized nitrate without toxic NO emission is still a great challenge, because of uncontrollable reaction intermediates and pathways. In this study, we demonstrate that the introduction of triangle Cl-Ag -Cl sites on a Cl-terminated, (001) facet-exposed BiOCl can selectively promote one-electron activation of reactant molecular oxygen to intermediate superoxide radicals (⋅O ), and also shift the adsorption configuration of product NO from the weak monodentate binding mode to a strong bidentate mode to avoid unfavorable photolysis. By simultaneously tuning intermediates and products, the Cl-Ag -Cl-landen BiOCl achieved >90 % NO conversion to favorable NO of high selectivity (>97 %) in 10 min under visible light, with the undesired NO concentration below 20 ppb.
View Article and Find Full Text PDFIncreasingly frequent and severe droughts pose a growing threat to food security in China. However, our understanding of how different crops respond to multi-timescale drought under varying climatic conditions remains limited, hindering effective drought risk management. To address this knowledge gap, we applied spatial principal component analysis (SPCA) to unveil spatiotemporal patterns in annual yields of major grain crops (rice, wheat, maize) and cotton in response to multi-timescale drought, as indicated by the standardized precipitation evapotranspiration index (SPEI) across China.
View Article and Find Full Text PDFHigh-valent iron-oxo species (Fe=O) has been a long-sought-after oxygen transfer reagent in biological and catalytic chemistry but suffers from a giant challenge in its gentle and selective synthesis. Herein, we propose a new strategy to synthesize surface Fe=O (≡Fe=O) on nanoscale zero-valent iron (nZVI) using chlorite (ClO) as the oxidant, which possesses an impressive ≡Fe=O selectivity of 99%. ≡Fe=O can be energetically formed from the ferrous (Fe) sites on nZVI through heterolytic Cl-O bond dissociation of ClO via a synergistic effect between electron-donating surface ≡Fe and proximal electron-withdrawing HO, where HO serves as a hydrogen-bond donor to the terminal O atom of the adsorbed ClO thereby prompting the polarization and cleavage of Cl-O bond for the oxidation of ≡Fe toward the final formation of ≡Fe=O.
View Article and Find Full Text PDFBackground Pathological cardiac hypertrophy is regarded as a critical precursor and independent risk factor of heart failure, and its inhibition prevents the progression of heart failure. Switch-associated protein 70 (SWAP70) is confirmed important in immunoregulation, cell maturation, and cell transformation. However, its role in pathological cardiac hypertrophy remains unclear.
View Article and Find Full Text PDFHeterogeneous Fenton reactions of zero-valent iron (ZVI) requires the sufficient release of Fe(II) to catalyze the HO decomposition. However, the rate-limiting step of proton transfer through the passivation layer of ZVI restricted the Fe(II) release via Fe core corrosion. Herein we modified the shell of ZVI with highly proton-conductive FeCO·2HO by ball-milling (OA-ZVI), and demonstrated its high heterogeneous Fenton performance of thiamphenicol (TAP) removal, with 500 times enhancement of the rate constant.
View Article and Find Full Text PDFThis study aimed to explore nitrogen fertilizer management measures to synergistically improve wheat yields and water and nitrogen use efficiency under supplemental irrigation based on soil moisture in the Huang Huai winter wheat area. Wheat variety "Yannong 1212" was used as the test material. There were three nitrogen application levels, 150 kg·hm (N), 210 kg·hm (N), and 270 kg·hm (the conventional nitrogen application rate in the Huang Huai winter wheat area, N), with the relative soil water content of 0-40 cm of each treatment was supplemented to 70% at the jointing and flowering stages.
View Article and Find Full Text PDFPyrolysis of pharmaceutical sludge (PS) is a promising way of safe disposal and to recover energy and resources from waste. The resulting PS biochar (PSBC) is often used as adsorbent, but has seldom been explored as catalyst. Herein we demonstrate that PSBC (0.
View Article and Find Full Text PDF5-Methylcytosine (mC) is an epigenetic mark that impacts transcription, development, diseases including cancer and aging. The demethylation process involves Tet-mediated stepwise oxidation of mC to hmC, fC, or caC, excision of fC or caC by thymine-DNA glycosylase (TDG), and subsequent base excision repair. Thymine-DNA glycosylase (TDG) belongs to uracil-DNA glycosylase (UDG) superfamily, which is a group of enzymes that are initially found to be responsible for excising the deaminated bases from DNA and generating apurinic/apyrimidinic (AP) sites.
View Article and Find Full Text PDFRegulating the distribution of reactive oxygen species generated from H O activation is the prerequisite to ensuring the efficient and safe use of H O in the chemistry and life science fields. Herein, we demonstrate that constructing a dual Cu-Fe site through the self-assembly of single-atomic-layered Cu nanoclusters onto a FeS surface achieves selective H O activation with high efficiency. Unlike its unitary Cu or Fe counterpart, the dual Cu-Fe sites residing at the perimeter zone of the Cu /FeS interface facilitate H O adsorption and barrierless decomposition into ⋅OH via forming a bridging Cu-O-O-Fe complex.
View Article and Find Full Text PDFBackground: At the end of 2019, the world witnessed the emergence and ravages of a viral infection induced by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Also known as the coronavirus disease 2019 (COVID-19), it has been identified as a public health emergency of international concern (PHEIC) by the World Health Organization (WHO) because of its severity.
Methods: The gene data of 51 samples were extracted from the GSE150316 and GSE147507 data set and then processed by means of the programming language R, through which the differentially expressed genes (DEGs) that meet the standards were screened.