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By using a mixed-ligand approach, a new Cu(II)-based coordination polymer with the chemical formula of [Cu(4-dpds)(bdc)(H2O)2] · 4-dpds (1) (4-dpds = 4,4′-dipyridyldusulfide and H2bdc = benzenedicarboxylic acid) has been synthesized and structurally determined by single-crystal X-ray diffractometer, powder X-ray diffraction, elemental analysis, infrared spectra and thermogravimetric analysis. Furthermore, the treatment effect of the synthetic compound was evaluated on the Parkinson's disease animal model and the enzyme linked immunosorbent assay (ELISA) was performed to detect the content of dopamine content in the substantia nigra. Then, the high efficiency liquid phase chromatogram (HPLC) was conducted for the measurement of the vanillyl mandelic acid (VMA) in urine. [ABSTRACT FROM AUTHOR]

[Display omitted] • A pyrene-based amphiphilic molecule (Pmvb) was designed and synthesized. • Pmvb could self-assemble into rod-like aggregates in aqueous solution. • Pmvb can be used as highly specific colorimetric and fluorimetric sensors for ClO− and Fe3+. In this study, a pyrene-based amphiphilic molecule (Pmvb) was designed and synthesized, which could self-assemble into rod-like aggregates in aqueous solution. The modification of luminescence and the sensing capabilities of Pmvb can be accomplished by ClO− and Fe3+ in water and DMSO, respectively, through self-assembly and disassembly process. In the aqueous solution, ClO− has the potential to engage in electrostatic interactions with the positively charged methylpyridine groups of Pmvb, which leads to a notable enhancement in fluorescence emission and a discernible alteration in color, transitioning from dark yellow to bright orange. Interestingly, in DMSO solution, the luminescence suppression of Pmvb in the presence of Fe3+ was observed, accompanied with change of the fluorescence emission color from bright yellow to dark orange, caused by the cation-π interactions between Fe3+ and the pyrene unit of Pmvb. Thus, the specific colorimetric and fluorometric sensor of pyrene derivatives could be achieved by ClO− and Fe3+ in different solvents. [ABSTRACT FROM AUTHOR]

Cervical facet joint (CFJ) syndrome is a common cause of neck pain. For its diagnosis and treatment, CFJ injection with arthrogram is generally performed. This study aimed to investigate the frequency of extra-CFJ flow on CFJ arthrograms during injections and its differences according to age, sex, and cervical vertebral level. We analyzed 760 CFJ arthrograms administrated to 208 patients diagnosed with CFJ syndrome. Arthrograms at each vertebral level were collected to evaluate the normal CFJ and extra-CFJ flow. The primary and secondary outcomes were frequency of extra-CFJ flow according to cervical vertebral level, age, and sex and according to pairwise cervical levels, respectively. Extra-CFJ flow at the cervical spine occurred during 179 injections, and the overall incidence was 3.3–36.2% at different cervical levels. The incidence of extra-CFJ flow at each cervical vertebral level according to age and sex was not significant. Extra-CFJ flow was the highest at C6 and C7, but there was no statistical significance. Extra-CFJ flow was higher at lower vertebral levels (C5–C7) than at upper levels (C3 and C4). Additional clinical studies and anatomical evaluations are needed to support its clinical value and enable the development of new injection techniques. [ABSTRACT FROM AUTHOR]