Paired Electrolysis-Enabled Arylation of Quinoxalin-2(1)-ones.

The first paired electrolysis-enabled arylation of quinoxalin-2(1)-ones was achieved using cyanoarenes as the arylation reagents. A variety of 3-arylquinoxalin-2(1)-ones with various important functional groups were obtained in moderate to good yields under metal- and chemical oxidant-free conditions. With a pair of reductive and oxidative processes occurring among the substrates and reaction intermediates, the power consumption can be dramatically reduced.

Acaricidal Activity of Cyclodipeptides from Bacillus amyloliquefaciens W1 against Tetranychus urticae.

Bioassay-guided fractionation of the supernatant of the biocontrol strain Bacillus amyloliquefaciens W1 led to the isolation of eight acaricidal cyclodipeptides from the active fractions by column chromatography separation and HPLC purification. The chemical structures of these compounds were identified as cyclo-(Gly-l-Phe), 2, cyclo-(l-Phe- trans-4-OH-l-Pro), 3, cyclo-(Gly-l-Tyr), 4, cyclo-(l-Ala-l-Pro), 5, cyclo-(l-Pro- trans-4-OH-l-Pro), 6, cyclo-(Gly-l-Pro), 7, cyclo-(l-Pro-l-Pro), 8, and cyclo-(l-Tyr- trans-4-OH-l-Pro), 9. Those cyclodipeptides displayed significant acaricidal activities with LC values of 13.

Updated findings of the association and functional studies of DRD2/ANKK1 variants with addictions.

Both nicotine and alcohol addictions are severe public health hazards worldwide. Various twin and family studies have demonstrated that genetic factors contribute to vulnerability to these addictions; however, the susceptibility genes and the variants underlying them remain largely unknown. Of susceptibility genes investigated for addictions, DRD2 has received much attention.

Impact of maternal nicotine exposure on expression of myelin-related genes in zebrafish larvae.

Background: Although maternal smoking during pregnancy disrupts offspring development, it is not clear whether smoking before pregnancy has any effect on the next generation. Given that nicotine, the major psychoactive component in cigarettes, is toxic to many organs, we hypothesized that maternal smoking even before a pregnancy affects offspring development. Myelin is an important structure in the nervous system, and deficits in myelin are related to many psychiatric disorders and drug addiction.

Identification and characterization of poly(I:C)-induced molecular responses attenuated by nicotine in mouse macrophages.

To further our understanding of the effects of nicotine on the molecular responses of macrophages during virus or virus-like infections, poly(I:C)-stimulated macrophage-like RAW264.2 cells or mouse primary peritoneal macrophages were challenged with nicotine; and their molecular responses were evaluated using a qRT-PCR array, antibody array, ELISA, Western blotting, and Ca(2+) imaging. Of 51 genes expressed in the Toll-like receptor (TLR) and RIG-I-like receptor (RLR) pathways, mRNA expression of 15 genes in RAW264.

Genotypic variants at 2q33 and risk of esophageal squamous cell carcinoma in China: a meta-analysis of genome-wide association studies.

Genome-wide association studies have identified susceptibility loci for esophageal squamous cell carcinoma (ESCC). We conducted a meta-analysis of all single-nucleotide polymorphisms (SNPs) that showed nominally significant P-values in two previously published genome-wide scans that included a total of 2961 ESCC cases and 3400 controls. The meta-analysis revealed five SNPs at 2q33 with P< 5 × 10(-8), and the strongest signal was rs13016963, with a combined odds ratio (95% confidence interval) of 1.

Modulation of innate immune-related pathways in nicotine-treated SH-SY5Y cells.

Although nicotine has a broad impact on both the central and peripheral nervous systems, the molecular mechanisms remain largely unknown, especially at the signaling pathway level. To investigate that aspect, we employed both conventional molecular techniques, such as quantitative real-time PCR and Western blotting analysis, and high-throughput microarray approach to identify the genes and signaling pathways that are modulated by nicotine. We found 14 pathways significantly altered in SH-SY5Y neuroblastoma cells.

Genetics of GABAergic signaling in nicotine and alcohol dependence.

Both nicotine and alcohol addictions are common chronic brain disorders that are of great concern to individuals and society. Although genetics contributes significantly to these disorders, the susceptibility genes and variants underlying them remain largely unknown. Many years of genome-wide linkage and association studies have implicated a number of genes and pathways in the etiology of nicotine and alcohol addictions.

Large-scale genome-wide association study of Asian population reveals genetic factors in FRMD4A and other loci influencing smoking initiation and nicotine dependence.

Diseases related to smoking are the second leading cause of death in the world. Cigarette smoking is a risk factor for several diseases such as cancer and cardiovascular and respiratory disorders. Despite increasing evidence of genetic determination, the susceptibility genes and loci underlying various aspects of smoking behavior are largely unknown.

Nicotinic modulation of innate immune pathways via α7 nicotinic acetylcholine receptor.

The major addictive component of tobacco, nicotine, exerts anti-inflammatory effects in multiple cell types and may benefit neurons in various degenerative disorders, such as Alzheimer's and Parkinson's disease, in which an inflammation-related mechanism is implicated. Among the various nicotinic acetylcholine receptors, α7, which has been identified in both neurons and immune cells and has high permeability to calcium, is believed to contribute significantly to nicotinic anti-inflammatory and neuron-protective effects. Although nicotine has been used in clinical trials for the treatment of some inflammatory diseases such as ulcerative colitis, the molecular mechanisms of its actions are largely unknown.

[FTIR studies of chlorobenly-5-fluorouracil porphyrin].

In this paper new kind of porphyrin compounds was prepared, which combined well the affinity of prophyrin to malignant tumour with anticancer of 5-fluorouracil porphyrin. The IR spectra of m- and p-chlorophenyl-5-fluorouracil prophyrin were obtained and analyzed. The IR absorption peaks were investigated and concluded in detail.