Blood-Glucose-Depleting Hydrogel Dressing as an Activatable Photothermal/Chemodynamic Antibacterial Agent for Healing Diabetic Wounds.

Poorly healing and nonhealing diabetic wounds are challenging to treat as the rapid growth of bacteria due to the high local glucose content can lead to persistent inflammation and poor angiogenesis. Herein, a smart hydrogel dressing composed of 3,3',5,5'-tetramethylbenzidine/ferrous ion/Pluronic F-127/glucose oxidase (TMB/Fe/PF127/GOx) is designed and demonstrated to consume blood glucose while accelerating wound healing by generating antibacterial agents . The loaded GOx degrades blood glucose to provide hydrogen peroxide (HO) and gluconic acid to support the Fe-based Fenton reaction, and the generated hydroxyl radical (·OH) facilitates the oxidation of TMB.

Screening of ADHD symptoms in primary school students and investigation of parental awareness of ADHD and its influencing factors: A cross-sectional study.

Objective: The present study aimed to compare the differences in positive screening rates of attention deficit hyperactivity disorder (ADHD) symptoms between parents and teachers in the same sample of primary school students. Concurrently, parental awareness and information sources of ADHD were investigated, and possible relevant factors affecting parental awareness and their influence on positive screening rate of ADHD were analyzed.

Methods: A cross-sectional study was conducted in Changchun, China, between September 2020 and January 2021.

Constitutional delay of growth and puberty in female mice is induced by circadian rhythm disruption in utero.

Constitutional delay of growth and puberty (CDGP) refers to the late onset of puberty. CDGP is associated with poor psychosocial outcomes and elevated risk of cardiovascular and osteoporotic diseases, especially in women. The environmental factors that contribute to CDGP are poorly understood.

Hydrogen sulfide treatment increases the antioxidant capacity of fresh Lingwu Long Jujube ( cv. Mill) fruit during storage.

Hydrogen sulfide (HS) has been identified as an important gaseous signal molecule in plants. Here, we investigated the effects of HS on postharvest senescence and antioxidant metabolism of Lingwu Long Jujube ( cv. Mill) fruits (LLJF).

Photoreduced Ag surrounding single poly(4-cyanostyrene) nanoparticles for undifferentiated SERS sensing and killing of bacteria.

Developing a rapid, low cost and sensitive sensing strategy for undifferentiated detection and fast killing of bacterial pathogens are critical to alleviating bacteria infections. Here, we propose a direct photoreduction method to synthesize the SERS tag by integrating poly(4-cyanostyrene) nanoparticles (NPs) and silver ions, which are applied as bio-sensing system for bacteria sensing and fast killing. Under a focused laser spot, silver ions on the surface of the poly(4-cyanostyrene) NPs could be photoreduced into Ag NPs, thereby causing the Raman signal amplification of poly(4-cyanostyrene) NPs up to 40 times, and there is a good linear correlation between the Raman intensity of poly(4-cyanostyrene) NPs and different concentrations of Ag.

Silica Nanoparticles Disturb Ion Channels and Transmembrane Potentials of Cardiomyocytes and Induce Lethal Arrhythmias in Mice.

Background: The toxicity of silica nanoparticles (SiNPs) on cardiac electrophysiology has seldom been evaluated.

Methods: Patch-clamp was used to investigate the acute effects of SiNP-100 (100 nm) and SiNP-20 (20 nm) on the transmembrane potentials (TMPs) and ion channels in cultured neonatal mouse ventricular myocytes. Calcium mobilization in vitro, cardiomyocyte ROS generation, and LDH leakage after exposure to SiNPs in vitro and in vivo were measured using a microplate reader.

Contribution of DNA methylation in chronic stress-induced cardiac remodeling and arrhythmias in mice.

It is recognized that stress can induce cardiac dysfunction, but the underlying mechanisms are not well understood. The present study aimed to test the hypothesis that chronic negative stress leads to alterations in DNA methylation of certain cardiac genes, which in turn contribute to pathologic remodeling of the heart. We found that mice that were exposed to chronic restraint stress (CRS) for 4 wk exhibited cardiac remodeling toward heart failure, as characterized by ventricular chamber dilatation, wall thinning, and decreased contractility.

Poly[bis-[μ-1-cyclo-propyl-6-fluoro-4-oxido-7-(1-piperazin-yl)-1,4-dihydro-quinoline-3-carboxyl-ato]nickel(II)].

In the title compound, [Ni(C(17)H(17)FN(3)O(3))(2)](n), the Ni(II) atom exists in a distorted trans-NiN(2)O(4) octa-hedral geometry defined by two monodentate N-bonded and two bidentate O,O-bonded 1-cyclo-propyl-6-fluoro-4-oxido-7-(1-piperazin-yl)-1,4-dihydro-quinoline-3-carboxyl-ate (ciprofloxacinium) monoanions. The extended two-dimensional structure is a square grid. The Ni atom lies on a center of inversion.

[With genechip technique to investigate HLA-DQB1 gene polymorphisms in south and north regions of China].

Objective: To research and compare HLA-DQB1 gene frequency(GF) and polymorphism distribution between south and north population of Chinese in China.

Methods: Combining PCR-sequence specific primers(SSP) and sequence specific oligonucleotide probe(SSOP) techniques and DNA Microarray Kit for HLA-DQB1 Low Res Genotyping from Shenzhen Yi-Shengtang Biological LTD. Co.

[Evaluation on reducing effect of eye drop on herpes simplex virus-I in vitro].

Objective: To observe the effect of herbal eye drop Reduqing (clearing toxic heat) on herpes simplex virus (HSV) on the cytopathic effect in cell culture in vitro.

Methods: The maximal non-toxic Reduqing eye drop concentration added to cell culture infected with 100 and 10TCID50 of herpes simplex virus? (HSV-1) to observe the inhibitory effect of the medicine on HSV-I induced cytopathic effect.

Results: The Reduqing eye drop at maximal non-toxic concentration could obviously inhibit the cytopatic effect induced by 100TCID50 and 10TCID50 HSV-I.