TMT-Based Quantitative Proteomics Revealed the Antibacterial Mechanism of Cinnamaldehyde against MRSA.

Natural plant extracts have demonstrated significant potential in alternative antibiotic therapies. Cinnamaldehyde (CA) has garnered considerable attention as a natural antibacterial agent. In this study, Tandem mass tag (TMT) quantitative proteomics combined with Western blot and RT-qPCR methods were employed to explore the antibacterial mechanism of CA against Methicillin-Resistant (MRSA) at the protein level.

Corrosive effect on saturated pool boiling heat transfer characteristics of metallic surfaces with hierarchical micro/nano structures.

Surface modification is of critical interest to enhance boiling heat transfer in terms of heat transfer coefficient or critical heat flux (CHF), which is significantly affected by distinct surface morphology and wettability and it can improve the efficiency and safety of equipment. Furthermore, actual service environment may cause severe corrosion to the processed structured surfaces while its consequence on boiling heat transfer is still obscure. In this article, comprehensive researches are conducted to unravel corrosive effect on metallic samples made of stainless steel (SS) and Inconel materials with microstructures.

Novel Covalent Probe Selectively Targeting Glutathione Peroxidase 4 In Vivo: Potential Applications in Pancreatic Cancer Therapy.

Glutathione peroxidase 4 (GPX4) emerges as a promising target for the treatment of therapy-resistant cancer through ferroptosis. Thus, there is a broad interest in the development of GPX4 inhibitors. However, a majority of reported GPX4 inhibitors utilize chloroacetamide as a reactive electrophilic warhead, and the selectivity and pharmacokinetic properties still need to be improved.

Simultaneous Covalent Modification of K-Ras(G12D) and K-Ras(G12C) with Tunable Oxirane Electrophiles.

Owing to their remarkable pharmaceutical properties compared to those of noncovalent inhibitors, the development of targeted covalent inhibitors (TCIs) has emerged as a powerful method for cancer treatment. The K-Ras mutant, which is prevalent in multiple cancers, has been confirmed to be a crucial drug target in the treatment of various malignancies. However, although the K-Ras(G12D) mutation is present in up to 33% of K-Ras mutations, no covalent inhibitors targeting K-Ras(G12D) have been developed to date.

Investigation on the Composition and Extraction Mechanism of the Soluble Species from Oily Sludge by Solvent Extraction.

Oily sludge (OS) was extracted with petroleum ether (PE), methanol, carbon disulfide (CDS), acetone, and isometric CDS/acetone mixture (IMCDSAM), respectively, to obtain soluble species (E-E) and extraction residues (R-R). The soluble species were analyzed by gas chromatography/mass spectrometry (GC/MS), and the extraction residues were characterized by Fourier transform infrared spectrometry (FTIR) and thermogravimetric analysis (TGA). Results showed that the extract yield of the soluble species from OS using CDS and IMCDSAM as the solvent was 61.

TMT-based quantitative proteomics analysis reveals the differential proteins between fresh and frozen-thawed sperm of yak (Bos grunniens).

Sperm cryopreservation is one of the most effective methods for the conservation of germplasm resources and used of superior sires widely. However, the motility of yak (Bos grunniens) sperm was low after thawing and the proteomics changes in sperm cryopreservation remain unknown. Therefore, the aim of this study was to explore the differences between fresh sperm and frozen sperm of yak through the proteomic analysis and thus improve the understanding of sperm cryodamage.

Discovery of Hexahydrofuro[3,2-]furans as New Kinase-Selective and Orally Bioavailable JAK3 Inhibitors for the Treatment of Leukemia Harboring a JAK3 Activating Mutant.

Janus kinase 3 (JAK3) is a potential target for the treatment of hematological malignancies. Herein, we report the discovery of a series of new orally bioavailable irreversible JAK3 kinase inhibitors. The representative compound potently inhibited JAK3 kinase activity with an IC value of 1.

Pyrolysis Kinetic Analysis of Sequential Extract Residues from Hefeng Subbituminous Coal Based on the Coats-Redfern Method.

Sequential extract residues (R , = 1, 2, 3, 4, and 5) were obtained from Hefeng acid-washing coal (HF) by petroleum ether, carbon disulfide, methanol, acetone, and isometric carbon disulfide/acetone mixture, sequentially. Pyrolysis behavior of the residues was determined using thermogravimetry analysis. The Coats-Redfern method with different reaction orders was used to analyze the pyrolysis kinetic of each sample, and the kinetic parameters, including correlation coefficient ( ), activation energy (), and pre-exponential factor (), were calculated.

Functional Group Characteristics and Pyrolysis/Combustion Performance of Karamay OS Based on FT-IR and TG-DTG Analyses.

Proximate analysis, ultimate analysis, Fourier-transform infrared spectroscopy (FT-IR), and thermogravimetry-differential thermal analysis characterization were carried out on oily sludge (OS) samples OS1-OS5, from Karamay, Xinjiang, China. The Coast-Redfern model (CRm) was used to simulate the pyrolysis and combustion kinetics of oily samples. The results showed that the peak area percentage of benzene ring trisubstitution of OS5, in the range of 700-900 cm, is close to 75%, corresponding to its high volatile content.

Effect of the Nickel Source on the Structure, Performance, and Carbon Deposition of the Ni/AlO Catalyst for CO-CH Reforming.

Ni/AlO catalysts were prepared with Ni(NO)·6HO, NiSO·6HO, NiCl·6HO, and NiCHO·4HO as nickel sources by the solution combustion method. The catalysts were characterized by X-ray diffraction, H temperature-programmed hydrogenation, TG-DTG, TPH, and transmission electron microscopy methods, and the effect of the nickel source on performance of the Ni/AlO catalyst was investigated via the CO-CH reforming experiment. Results showed that Ni dispersion, Ni size, and the metal-support interaction between active component Ni and the support were influenced significantly by anion in nickel sources, resulting in that the performance of each catalyst was different.

Effects of Promoters on the Structure, Performance, and Carbon Deposition of Ni-AlO Catalysts for CO-CH Reforming.

Modified Ni-AlO catalysts with Ca, Co, and Ce species as promoters were prepared by the combustion method, and the structure, morphology, reduction characteristic, and CO-CH reforming of the catalysts were discussed by X-ray diffraction (XRD), H-temperature-programmed reduction (H-TPR), energy-dispersive X-ray (EDX) mapping, NH-temperature-programmed desorption (NH-TPD), N adsorption-desorption, thermogravimetric-differential thermal analysis (TG-DTG), and temperature-programmed hydrogenation (TPH) methods. The crystal size of Ni on Ca-Ni-AlO was 16.97 nm, and the active component and additive were distributed well in the catalyst.

Effect of Ca Promoter on the Structure, Performance, and Carbon Deposition of Ni-AlO Catalyst for CO-CH Reforming.

Ni-AlO catalyst with different Ca abundance for CO-CH reforming was prepared by the solution combustion method. By some mature characterization methods, such as XRD, H-TPR, EDX mapping, TEM, TPH and TG-DTG technologies, and the reforming experiment, the effect of Ca content on the structure, reforming performance, and carbon deposition of Ni-AlO catalyst was investigated. Results showed that the grain size of active component Ni on the 4 wt % Ca-modified catalyst (Ni-Ca-4) was small (13.

Outcome after a new porous tantalum rod implantation for treatment of early-stage femoral head osteonecrosis.

Background: Tantalum rods have been used in osteonecrosis of the femoral head (ONFH) for several years, while Zimmer trabecular metal implants have been proposed as the best choice. The aim of this study was to evaluate the effect of a new porous tantalum rod on the treatment of early ONFH.

Methods: From July 2014 to December 2015, 19 patients (21 hips) were treated with Runze tantalum rod, and 20 patients (20 hips) received Zimmer tantalum prosthesis.

Efficacy of novel nano-hydroxyapatite/polyurethane composite scaffolds with silver phosphate particles in chronic osteomyelitis.

Recently, chronic osteomyelitis is still a challenging surgical problem. Unfortunately, the traditional clinical method using bone cement loaded antibiotics is restricted due to its non-biodegradability and limited release of antibiotics. Hydroxyapatite is a good adsorbent with good biocompatibility, an ideal bone repair material, and can avert the requirement for the secondary surgical procedure of removal.

[Novel nano-hydroxyapatite/polyurethane composite scaffold in the treatment of chronic osteomyelitis].

Objective: To evaluate the bone repair efficacy of the new nano-hydroxyapatite (n-HA)/polyurethane (PU) composite scaffold in the treatment of chronic osteomyelitis in tibia.

Methods: A novel levofloxacin@mesoporous silica microspheres (Lev@MSNs)/n-HA/PU was successfully synthesized. Its surface structure was observed by scanning electron microscopy (SEM).

Levofloxacin loaded mesoporous silica microspheres/nano-hydroxyapatite/polyurethane composite scaffold for the treatment of chronic osteomyelitis with bone defects.

Chronic osteomyelitis is a prolonged persistent disease accompanied by bone destruction and sequestrum formation, it is very difficult to treat. Antibiotic loaded polymethyl methacrylate (PMMA) has been used in clinical. However, when PMMA was implanted in the body, the deficiencies is that it is non-biodegradable and a second operation is needed.

Benzyl-triphenyl-phospho-nium perchlorate.

The asymmetric unit of the title compound, C(25)H(22)P(+)·ClO(4) (-), contains two independent cations and two independent anions. The closest inter-molecular contact is a weak inter-molecular C-H⋯π(arene) inter-action.

Natural products-based insecticidal agents 6. Design, semisynthesis, and insecticidal activity of novel monomethyl phthalate derivatives of podophyllotoxin against Mythimna separata Walker in vivo.

To discover the more potent analogs, 12 novel monomethyl phthalate derivatives of podophyllotoxin were synthesized and preliminarily tested against the pre-third-instar larvae of Mythimna separata Walker in vivo at the concentration of 1mg/mL. Compounds 8e-i showed the higher insecticidal activity than podophyllotoxin. Especially 8g exhibited the most potent insecticidal activity compared with toosendanin, a commercially available insecticide derived from Melia azedarach.

(11,13-Dimethyl-1,4,7,10-tetra-azacyclo-trideca-10,13-dienato)copper(II) per-chlorate.

The title complex, [Cu(C(11)H(21)N(4))]ClO(4), comprises [Cu(II)(L)](+) (L = 11,13-dimethyl-1,4,7,10-tetra-azacyclo-trideca-10,12-dien-ate) cations and a perchlorate anion. The Cu atom is located on a twofold crystallographic symmetry axis and is coordinated by four N atoms in a slightly distorted square-planar geometry. Inter-molecular N-H⋯O hydrogen bonds are present.

[Expression of human nerve growth factor gene in E. coli].

Objective: To investigate the structure and function of human nerve growth factor (beta-NGF) and the gene encoding beta-NGF.

Methods: A pair of specific primers (29 mer) for the sequence encoding human beta-NGF was designed and synthesized. A 380 bp fragment was amplified from human blood genomic DNA by polymerase chain reaction, and cloned into pGEM-T Easy vector.