Vancomycin-loaded hydrogels with thermal-responsive, self-peeling, and sustainable antibacterial properties for wound dressing.

Wound dressings play an important role in wound healing. However, many wound dressings lack antibacterial properties and are difficult to remove from newly grown tissues, causing secondary wound injuries and repeated medical treatment. This study reports a new type of thermal-responsive hydrogel dressing consisting of vancomycin-loaded gelatin nanospheres (GNs) and poly((-isopropylacrylamide)--(methylol acrylamide)) functional components that could impart self-peeling and sustainable antibacterial properties.

The post plasma-catalytic decomposition of toluene over K-modified OMS-2 catalysts at ambient temperature: Effect of K loading amount and reaction mechanism.

The present work is devoted to study the post plasma-catalytic (PPC) degradation of toluene using packed-bed discharge (PBD) plasma over K-modified manganese oxide octahedral molecular sieve (OMS-2) catalysts at ambient temperature. Compared to plasma alone, PPC can significantly improve the toluene degradation and mineralization performance simultaneously, and the generation of discharge byproducts and organic intermediates is suppressed. The catalytic capacity of OMS-2 for toluene degradation is greatly promoted by tuning potassium ions (K) content in OMS-2 tunnel, which might be owing to the formation of more surface active oxygen species derived from weak Mn-O bonds, plenty of oxygen vacancies, as well as more superior low-temperature reducibility.

Degradation of toluene by pulse-modulated multistage DBD plasma: Key parameters optimization through response surface methodology (RSM) and degradation pathway analysis.

In the present work, a pulse-modulated high-frequency (HF) dielectric barrier discharge (DBD) plasma has been employed and utilized to evaluate the feasibility of toluene degradation in a multistage rod-type reactor at room temperature. Experimental result indicates that the energy consumption is significantly reduced and heating effect can be effectively suppressed when the DBD plasma is ignited in pulse-modulated mode instead of continuous mode. The response surface methodology (RSM) based on central composite design (CCD) model has been proposed to evaluate the contribution of key operating parameters including duty cycle and modulation frequency.

MicroRNA expression profiling of lung adenocarcinoma in Xuanwei, China: A preliminary study.

MicroRNAs (miRNAs) have been proved to be related to the development and progression of lung cancer. However, the expression signatures of miRNAs in lung adenocarcinoma in Xuanwei are not yet clear. The current study aimed to identify the potential miRNA profiles in lung adenocarcinoma in Xuanwei by microarray.

Morphology-tunable tellurium nanomaterials produced by the tellurite-reducing bacterium Lysinibacillus sp. ZYM-1.

Although tellurite is highly toxic to organisms, elemental tellurium nanomaterials (TeNMs) have many uses. The microbe-mediated reduction of tellurite to Te(0) has been shown to be a green and cost-effective approach for turning waste into wealth. However, it is difficult to tune the morphology of biogenic nanomaterials.

Draft Genome Sequence of a Selenite- and Tellurite-Reducing Marine Bacterium, Lysinibacillus sp. Strain ZYM-1.

Lysinibacillus sp. ZYM-1, a Gram-positive strain isolated from marine sediments, reduces selenite and tellurite efficiently. Meanwhile, it also exhibits high resistance to Zn2+ and Mn2+.

Morphine-induced changes of adenylate and guanylate cyclase in locus ceruleus, periaqueductal gray, and substantia nigra in rats.

Objectives: To observe the changes of adenylate cyclase (AC) and guanylate cyclase (GC) in the cerebral regions including the locus ceruleus, periaqueductal gray, and substantia nigra in rats that were physiologically dependent on morphine. We also investigated the relationship of enzymatic changes in these cerebral regions to the mechanism of morphine dependence.

Methods: A morphine-dependent rat model was established and withdrawal symptoms evaluated.

[Relation between complexes iotramolecular transfer and structure of [M(SS) (NN)](M = Zn2+, Cd2+)].

The title complexes of [M(SS)(NN)](M = Zn2+, Cd+; SS = 1,2-dicyano 1,2-ethylene -dithiolate or maleonitriledithiolate; NN = 5-nitro-1,10 phenanthroline) were synthesized. The electronic absorption spectra of complexes [M(SS)(NN)] in DMSO, DMF, acetone and Py were reported. The spectra absorption bands 270-280 nm, 320-350 nm and 350-390 nm are the intraligand pi(b) --> pi* transfer of ligand mnt(2-) and 5-NOz-phen.

[Changes of adenylate cyclase on cerebral regions related to mophine dependence in rats].

Objective: To observe the changes of adenylate cyclase(AC) on cerebral regions related to morphine dependence in rats and investigate the relationship between the enzymological changes and the mechanism of morphine dependence.

Methods: The technique of enzyme-histochemistry was used to detect the variations of AC of special seven cerebral regions including frontalis cortex, lenticula, corpus amygdaloideun, substantia nigra, hippocampus, periaqueductal gray and locus coerleus in morphine dependent rats. The enzymological changes were observed by optical microscope.

[Infrared spectra and coordinated mode of manganese (II), iron (II), cobalt (II) complexes with dithiolene and 1, 10-phenanthroline-5, 6-dione ligands].

The infrared spectra and far-infrared spectra of M(mnt)(phen-5, 6-dione) [M= Manganese(II), Iron(II), Cobalt(II). mnt2- = 1, 2-dicyano-1, 2-ethylenedithiolate or maleonitriledithiolate, phen-5, 6-dione = 1, 10-phenanthroline-5, 6-dione] are reported in detail. In infrared spectra and far-infrared, characteristic v (C[triplebond]N) , v (C==)) , (C==C) v (C-N), v (C-S), v (M-S) and V(M-N) are very strong.

Postmortem changes in the central nervous system and adrenal medulla of the heroin addicts.

This study describes the pathological changes in 20 heroin addicts (12 male and 8 female) autopsied 24 h after sudden death. The central nervous system (including the pituitary body) and the adrenal medulla were studied, along with those from age-matched controls who died from traffic accidents. Immunohistochemistry and histological (Hematoxylin and eosin) observation were performed.