ABSTRACT
ObjectiveA rapid method for identification of chemical constituents in Puerariae Lobatae Radix dispensing granules was established in order to clarify the material basis. MethodThe chemical constituents of Puerariae Lobatae Radix dispensing granules was qualitatively analyzed by ultra-performance liquid chromatography-quadrupole-time-of-flight mass spectrometry（UPLC-Q-TOF-MS/MS） under positive and negative ion modes， and the chromatographic conditions were on an ACQUITY UPLC HSS T3 column（2.1 mm×100 mm， 1.8 μm） with 0.1% formic acid aqueous solution（A）-0.1% formic acid acetonitrile solution（B） as mobile phase for gradient elution（0-4 min， 5%-10%B； 4-10 min， 10%-15%B； 10-20 min， 15%-16%B； 20-27 min， 16%-31%B； 27-33 min， 31%-59%B； 33-42 min， 59%-95%B； 42-42.1 min， 95%-5%B； 42.1-45 min， 5%B）， the flow rate was 0.35 mL·min-1， the column temperature was 40 ℃， the injection volume was 5 μL， and electrospray ionization（ESI） was selected. Then these chemical constituents were comprehensively identified based on PeakView 1.2， PubChem， ChemicalBook， ChemSpider， comparative control profiles and literature information. ResultA total of 128 chemical constituents were identified from the dispensing granules， including 60 flavonoids， 26 organic acids， 7 glycosides， 6 coumarins， 3 nucleosides and 26 other compounds. By focusing on the cleavage patterns of flavonoids， organic acids， glycosides， coumarins， nucleosides and other compounds， 12 compounds that have not been reported in Puerariae Lobatae Radix species were identified from the dispensing granules. ConclusionThe established method can systematically and rapidly identify the chemical constituents in Puerariae Lobatae Radix dispensing granules， and cleared it composition is mainly flavonoids and organic acids. Laying a foundation for the study of the material basis， mechanism of action and clinical application of the dispensing granules.
ABSTRACT
Objective To explore a new method for lacrimal passage irrigation after laser dacryocystoplasty surgery. Method One-hundred patients (104 eyes), which underwent laser dacryocystoplasty surgery combined with lacrimal drainage tube indwelling, were divided into two groups. In Group A (50 patients, 52 eyes), lacrimal passage irrigation was performed by traditional No.5 needle. While in Group B (50 patients, 52 eyes), it was done by No.7 blunt round needle designed by the researchers. Lacrimal passage irrigation was performed three times, each at the 3rd day, 1 week and 1 month after surgery. The silicone tube was removed 3 months after surgery and the treatment was evaluated. Results The total effective rate was 64% (32/50) in Group A and 92%(46/50) in Group B. The difference was statistically significant (χ2=18.537, P < 0.01). Conclusions The No.7 blunt round needle showed better effect when used for lacrimal passage irrigation after laser dacryocystoplasty surgery. It could improve the efficiency of lacrimal passage irrigation, thus decreasing irrigation times and reducing psychological pressure for the patients, which is worthy of clinical application.
ABSTRACT
Objective To investigate the regulatory role of rno-miR-30b-5p in the expressions of interleukin-10 (IL-10) and toll-like receptor 4 (TLR4) in uveitis.Methods Both IL-10 and TLR4 gene 3'UTR lucfferase vectors and relevant binding site mutant vectors were constructed.Further,both rno-miR-30b-5p mimics and reporter gene vector were co-transferred into 293 T cells to validate the fluorescent alterations of the reporter gene expression to detect the interactions between rno-miR-30b-5p and the related target genes.Moreover,an experimental autoimmune uveitis (EAU) model was induced with IRBP peptide emulsion in rats,and both lymph node and spleen were isolated on day 12 after EAU induction.In order to measure rno-miR-30b-5p levels and IL-1 0,TLR4 expressions in spleen and lymph node,quantitative PCR and ELISA techniques were applied.Results The results of double lucfferase reporter gene expression analysis showed rno-miR-30b-5p mimic apparently down-regulated the fluorescence intensity of both IL-10 and TLR4 in wild type cells.After the mutation of the target site,the fluorescence intensity of the mutant vector was significantly reduced,accompanied by a significantly statistical difference (all P ＜ 0.01).Moreover,animal results revealed the expressions of rno-miR-30b-5p were apparently decreased,whereas IL-10 and TLR4 were markedly increased in both lymph node and spleen (all P ＜ 0.05).Conclusion Target identification shows that rno-miR-30b-5p can obviously regulate the expressions of 3'UTR gene with either IL-10 or TLR4 gene fragment,though its regulation might not be through the predicted site.The down-regulated expression of rno-miR-30b-5p in both spleen and lymph node in EAU rats result in the up-regulated expressions of both IL-10 and TLR4,further influence the development of uveitis.This study paves a way for the modulation of microRNA on the occurrence and development of uveitis,and will provide a new insight on treating uveitis.