Coordination compound-derived FeN/FeN/Fe/CNT for efficient electrocatalytic oxygen evolution: a facile one-step synthesis in the absence of extra nitrogen source.

By annealing an Fe(III)-coordination compound (Fe-CC), [FeCl(Hbta)] (Hbta = benzotriazole) in the presence of a carbon nanotube precursor (PCNT) template, an FeN/FeN/Fe/CNT heterostructure was successfully synthesized without an extra nitrogen source. The decomposition of the Hbta in Fe-CC under high-temperature annealing can produce carbon sheets and reduced graphene oxide (rGO), and the presence of CNTs can alleviate the stacking of thegenerated carbon materials. Meanwhile, iron nitride nanoparticles (NPs) can be anchored on the carbon sheets, and the anchoring effect efficiently prevents the agglomeration of NPs and increases the amount of active catalytic sites for the oxygen evolution reaction (OER).

Coordination Polymer-Derived FeN Nanoparticles for Efficient Electrocatalytic Oxygen Evolution.

Based on a coordination polymer, FeCl(4,4'-bpy) (4,4'-bpy = 4,4'-bipyridine) and the carbon nanotube (CNT)/NaCl dual template, FeN nanoparticles (NPs) were synthesized via chemical thermolysis in the absence of an extra nitrogen source. The decomposition of 4,4'-bpy under high temperature produces thin carbon coating for FeN NPs. Also, the CNT template anchors the FeN NPs to avoid aggregation.

Correlation between tripartite motif-containing protein 44 protein expression and the prognosis of postoperative patients exhibiting skin squamous cell carcinoma.

Tripartite motif-containing protein 44 (TRIM44) plays an important role in the development and progression of some human cancers; however, its role in skin squamous cell carcinoma (SCC) remains unknown. The aim of the present study was to investigate TRIM44 expression and clinicopathological significance of TRIM44 in SCC.Immunohistochemistry (IHC) technique, reverse transcriptase-polymerase chain reaction (RT-PCR) and western blot were performed to evaluate differences in TRIM44 protein expression in SCC and normal skin tissues.

Clinical significance of the phosphorylation of MAPK and protein expression of cyclin D1 in human osteosarcoma tissues.

The aim of the present study was to investigate the significance of the phosphorylation of mitogen-activated protein kinase (MAPK) and the protein expression of cyclin D1 in human osteosarcoma tissues. Human osteosarcoma tissue samples were collected from 30 patients, benign bone tumor samples were collected from 30 patients, and normal bone tissues were collected from 10 individuals as controls. Immunohistochemistry was performed to measure the levels of phosphorylated (p)-MAPK and cyclin D1 protein in cases of human osteosarcoma.

Clinical significance of STAT3 and MAPK phosphorylation, and the protein expression of cyclin D1 in skin squamous cell carcinoma tissues.

The present study aimed to investigate the significance of the phosphorylation of signal transducer and activator of transcription 3 (STAT3) and mitogen‑activated protein kinase (MAPK), and the protein expression of cyclin D1, in skin squamous cell carcinoma (SCC) tissues. SCC specimens from the skin were collected from 30 patients, and normal skin tissues were collected from 10 individuals as a control. Immunohistochemistry was used to assess the protein expression levels of phosphorylated (p‑)STAT3, p‑MAPK and cyclin D1 in the SCC tissues.

Inhibitory effect of curcumin on invasion of skin squamous cell carcinoma A431 cells.

Objective: To investigate the regulatory effect of curcumin on expression of signal transducer and activator of transcription 3 (STAT3) in skin squamous cell carcinoma tissues as well as possible mechanisms of curcumin in prevention and treatment of skin squamous cell carcinoma.

Materials And Methods: Highly invasive A431 cells were treated with curcumin at various doses .The cytotoxic effects of treatment with 5, 10, 15, 20, 25, 30, 35, 40 and 50 umol/L curcumin for 24, 48 and 72 hours on A431 cells were measured by MTT assay.

Type IV secretion system in Helicobacter pylori: a new insight into pathogenicity.

Objective: To review the research progress on Type IV secretion system (T4SS) in Helicobacter pylori.

Data Sources: The data used in this review were identified by searching of PUBMED (1995 - 2007) online resources using the key terms 'Type IV secretion system' and 'Helicobacter pylori'.

Study Selection: Mainly original articles and critical reviews written by major pioneer investigators of this field were selected.

[The type IV secretion system encoded by the cag PAI of Helicobacter pylori].

Helicobacter pylori is a human-specific gastric pathogen that colonizes over half the world's population. Infection with this bacterium is associated with a spectrum of gastric pathologies ranging from mild gastritis to peptic ulcers and gastric cancer. A strong predictor of severe disease outcome is infection with a bacterial strain harbouring the cag (cytotoxin associated gene) pathogenicity island (PAI), a 40 kb stretch of DNA that encodes homologues of several components of a type IV secretion system (TFSS).