Nanoparticle-mediated light-driven LAMP combined with test strips for sensitive and rapid visual detection of antibiotic resistance genes.

Antibiotic resistance genes (ARGs) are markers of drug-resistant pathogens, monitoring them contributes to prevent resistance to drugs. The detection methods for ARGs including PCR and isothermal amplification are sensitive and selective. However, it may take several hours or cannot be used on spot.

F-PCS measurements on proteins in live mammalian cells.

Pseudocontact shift (PCS) contains rich structural information of proteins in structural and chemical biology. F-PCS is determined in live mammalian cells dual labelling of the target protein with a paramagnetic tag and a F-tag, which is achieved by varied reactivity of solvent exposed cysteines in selection of different types of tags. About 0.

Dual-Indicator loaded porous polymer microneedle patches for rapid and colorimetric detection of water-injected meat.

Water-injected meat leads to microbial growth, which affects the health of consumers. A colorimetric porous polymer microneedle patch was designed and prepared using photopolymerization of an acrylate monomer with porogen to be the substrate, and cobalt (II) chloride as color change indicator and tartrazine as the reference. The color of the microneedle patch changed from green to yellow green and to yellow as the increase of moisture concentration.

Self-evolving persistent luminescence nanoprobes for autofluorescence-free ratiometric imaging and on-demand enhanced chemodynamic therapy of pulmonary metastatic tumors.

Precise imaging-guided therapy of a pulmonary metastasis tumor is of great significance for tumor management and prognosis. Persistent luminescence nanoparticles (PLNPs) are promising probes due to their excitation-free and low-background imaging characteristics. However, most of the PLNP-based probes cannot intelligently distinguish between normal and tumor tissues or balance the needs of targeted accumulation and rapid metabolism, resulting in false positive signals and potential side effects.

Persistent production of multiple active species with copper doped zinc gallate nanoparticles for light-independent photocatalytic degradation of organic pollutants.

Photocatalysis is considered as an environmentally friendly and sustainable method as it can produce active species to degrade pollutants. However, its applications are hindered by the turbidity of pollutants and the requirements for continuous or repeated in situ irradiation. To avoid the need for continuous in situ irradiation in the photocatalytic process, herein we report the doping of Cu(II) ions into zinc gallate (ZnGaO) as traps to capture photo-generated electrons.

Size-independent boosting of near-infrared persistent luminescence in nano-phosphors via a magnesium doping strategy.

Near-infrared (NIR)-emitting persistent luminescence nanoparticles (PLNPs) are ideal optical imaging contrast reagents characterized by autofluorescence-free optical imaging for their frontier applications in long-term bioimaging. Preparation of uniform small-sized PLNPs with excellent luminescence performance is crucial for biomedical applications, but challenging. Here, we report a facile magnesium doping strategy to achieve size-independent boost of NIR persistent luminescence in typical and most concerned ZnGaO:Cr PLNPs.

Simultaneous Quantification of Biothiols and Deciphering Diverse GSH Stability in Different Live Cells by F-Tag.

GSH, Cys, Hcy, and HS are important biothiols and play important roles in the living systems. Quantitative and simultaneous determination of these biothiols under physiological conditions is still a challenge. Herein, we developed an effective F-reactive tag that readily interacts with these four biothiols for the generation of stable thioether products that have distinguishable F-chemical shifts.

A pH-Responsive Persistent Luminescence Nanozyme for Selective Imaging and Killing of and Common Resistant Bacteria.

() infection is implicated in the etiology of many diseases. eradication by antibiotic therapy is limited by the extreme acidic environment in the stomach, the undesired side effect of intestinal commensal bacteria, and the development of drug resistance. Here, we report a pH-responsive persistent luminescence (PL) nanozyme (MSPLNP-Au-CB) for in vivo imaging and inactivation of .

Responsive nanoplatform for persistent luminescence "turn-on" imaging and "on-demand" synergistic therapy of bacterial infection.

Multifunctional nanotheranostic platforms are emerging for the treatment of bacterial infections. Uncontrollable drug release and poor response in target location leads to inefficient therapy and failure to offer timely antibacterial monitoring. Here, we report a multifunctional nanoplatform that can be triggered by the bacterial microenvironment for effective bacterial killing and high-sensitive persistent luminescence (PL) "turn-on" imaging.

Simultaneous identification and quantification of amino acids in biofluids by reactive F-tags.

A robust method to identify and quantify amino acids close to physiological conditions by 1D F NMR was established. Each F-derivatized amino acid has its characteristic chemical-shift profile that is readily identified in the mixture of amino acids or in biofluids including fetal bovine serum and cell lysates. The method shows great potential in metabolomics and biochemical analysis.

Dynamic Exchange of the Metal Chelating Moiety: A Key Factor in Determining the Rigidity of Protein-Tag Conjugates in Paramagnetic NMR.

Site-specific labeling of proteins with a paramagnetic tag is an efficient way to provide atomic-resolution information about the dynamics, interactions, and structures of the proteins and protein-ligand complexes. The paramagnetic effects manifested in NMR spectroscopy generally contain paramagnetic relaxation enhancement, pseudocontact shifts (PCSs), and residual dipolar coupling (RDC), and these effects correlate closely with the flexibility of protein-tag conjugates. The rigidity of the paramagnetic tag is greatly important in decoding the structural details of macromolecular complexes, because paramagnetic averaging reduces the PCSs and RDCs.

In-cell destabilization of a homodimeric protein complex detected by DEER spectroscopy.

The complexity of the cellular medium can affect proteins' properties, and, therefore, in-cell characterization of proteins is essential. We explored the stability and conformation of the first baculoviral IAP repeat (BIR) domain of X chromosome-linked inhibitor of apoptosis (XIAP), BIR1, as a model for a homodimer protein in human HeLa cells. We employed double electron-electron resonance (DEER) spectroscopy and labeling with redox stable and rigid Gd spin labels at three representative protein residues, C12 (flexible region), E22C, and N28C (part of helical residues 26 to 31) in the N-terminal region.

In-Cell EPR Distance Measurements on Ubiquitin Labeled with a Rigid PyMTA-Gd(III) Tag.

Double electron-electron resonance (DEER) measures distances between spin labels attached at well-defined sites in a protein and thus has the potential to report on conformational states of proteins in cells. In this work, we evaluate the suitability of the small and rigid 4PS-PyMTA-Gd(III) spin label for in-cell distance measurements. Three ubiquitin double mutants were labeled with 4PS-PyMTA-Gd(III) and delivered into human HeLa cells by electroporation (EP) and hypotonic swelling (HS).

Comparing the mental health of rural-to-urban migrant children and their counterparts in china: Protocol for a systematic review and meta-analysis.

Background: In recent years, the issue of migrant children with peasant parents working in cities has attracted widespread attention in recent years because of the sheer number and the benefits bundled in China's household. The focus has gradually extended from early education opportunities to all aspects of physical and mental development, especially the social adaptation and mental health of migrant children. The negative impact of environment changes on migrant children' mental health is very worrying for parents and the society.

Imaging features of automated breast volume scanner: Correlation with molecular subtypes of breast cancer.

Objectives: To investigate the correlation between the imaging features obtained by an automated breast volume scanner (ABVS) and molecular subtypes of breast cancer.

Methods: We examined 303 malignant breast tumours by ABVS for specific imaging features and by immunohistochemical analysis to determine the molecular subtype. ABVS imaging features, including retraction phenomenon, shape, margins, echogenicity, post-acoustic features, echogenic halo, and calcifications were analysed by univariate and multivariate logistic regression analyses to determine the significant predictive factors of the molecular subtypes.

Quantitative evaluation of contrast-enhanced ultrasound for differentiation of renal cell carcinoma subtypes and angiomyolipoma.

Purpose: To investigate the value of quantitative parameters of contrast-enhanced ultrasound (CEUS) in the differentiation of subtypes of renal cell carcinoma (RCC) and angiomyolipoma (AML).

Methods: The quantitative characteristics of 341 RCCs and 88 AMLs were analyzed with quantitative software (SonoLiver). Quantitative analysis was conducted in the whole tumor (ROItumor) and the maximum enhanced area of the tumor (ROImax), acquiring the parameters of maximum intensity (IMAX), rise time (RT), time to peak (TTP), mean transit time (mTT), and area under the curve (AUC), were derived and analyzed.

Differentiation of subtypes of renal cell carcinoma with contrast-enhanced ultrasonography.

We aimed to assess the difference of enhancement patterns among the three RCC subtypes with contrast-enhanced ultrasound (CEUS). Two hundreds cases of pathologically proved clear cell renal cell carcinomas (ccRCC), 58 papillary renal cell carcinomas (pRCC) and 51 chromophobe renal cell carcinomas (chRCC) underwent preoperative conventional ultrasound and CEUS. The wash-in and wash-out pattern, peak enhancement degree and homogeneity, and the presence of pseudocapsule were evaluated by two blinded observers respectively.

The value of contrast-enhanced ultrasound (CEUS) in detecting minute renal cell carcinoma.

Unlabelled: To investigate the value of contrast-enhanced ultrasound (CEUS) in the detection of minute renal cell carcinoma (MRCC) compared to conventional ultrasound (US) and contrast-enhanced computed tomography (CECT).

Methods: Thirty-eight consecutive patients with 38 histopathologically proven MRCCs (≦15 mm) were enrolled in our study. CEUS and CECT were available in 38 and 24 patients, respectively.

Contrast-enhanced ultrasonography for evaluation of cystic renal mass: in comparison to contrast-enhanced CT and conventional ultrasound.

Purpose: To assess the value of contrast-enhanced ultrasonography (CEUS) in evaluating cystic renal lesions compared with conventional ultrasound (US) and contrast-enhanced computed tomography (CECT).

Methods: One hundred and three patients with complex cystic renal masses underwent preoperative US and CEUS, among which 70 conducted CECT at our institution. The images were analyzed with the number of septa, septa and wall thickness and the presence of solid component, and final diagnosis was made.