7,8-dihydroxyflavone displayed antioxidant effect through activating HO-1 expression and inhibiting caspase-3/PARP activation in RAW264.7 cells.

Flavonoids, which contain a benzo-γ-pyrone (C6-C3-C6) skeleton, have been reported to exhibit effective antioxidant ability. This study aimed to compare the antioxidant activities of 7,8-dihydroxyflavone (7,8-DHF) and 7-hydroxyflavone (7-HF) in H2 O2 , lipopolysaccharide (LPS), or tert-butyl hydroperoxide (t-BHP)-induced RAW264.7 cells, respectively. The antioxidant capacities of 7,8-DHF and 7-HF were firstly evaluated by 2,2-azinobis-3-ethyl-benzothiazoline-6-sulphonic acid (ABTS), 2,2-diphenyl-1-picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRAP) assays. Then, reactive oxygen species (ROS), super oxide dismutase (SOD), and malondialdehyde (MDA) productions in H2 O2 , LPS, or t-BHP-induced RAW264.7 cells were tested and compared, respectively. Finally, the antioxidant mechanisms of 7-HF and 7,8-DHF were initially investigated by western blot. Our results showed that 7,8-DHF possessed stronger free-radical scavenging capacity than 7-HF. Both 7,8-DHF and 7-HF suppressed MDA production and ROS accumulation, improved the activity of SOD in H2 O2 , LPS, or t-BHP-induced RAW264.7 cells, respectively. And 7,8-DHF exerted a better antioxidant effect than 7-HF, especially in t-BHP-induced oxidative stress. Mechanically, 7,8-DHF prevented the activation of poly ADP-ribosepolymerase and caspase-3, meanwhile markedly upregulated the expression of HO-1 protein in t-BHP-induced oxidative stress. These results suggested that 7,8-DHF might serve as a potential pharmaceutical drug against oxidative stress injury.

New Caffeoylquinic Acid Derivatives and Flavanone Glycoside from the Flowers of Chrysanthemum morifolium and Their Bioactivities.

The Chrysanthemum morifolium flower is widely used in China and Japan as a food, beverage, and medicine for many diseases. In our work, two new caffeoylquinic acid derivatives (1, 2), a new flavanone glycoside (3), and six reported flavanones (4⁻9) were isolated and identified from the flowers of C. morifolium. The chemical structures of all isolates were elucidated by the analysis of comprehensive spectroscopic data as well as by comparison with previously reported data. The isolated constituents 1⁻8 were evaluated for their neuroprotective activity, and compounds 3 and 4 displayed neuroprotective effects against hydrogen peroxide-induced neurotoxicity in human neuroblastoma SH-SY5Y cells.

Value of BISAP score combined with red blood cell distribution width for the severity of acute pancreatitis / 中国现代普通外科进展

Objective:To investigate the bedside index for severity in acute pancreatitis(BISAP) score combined with red cell distribution width (red cell distribution width,RDW) on acute pancreatitis (AP) and early assessment of the severity of value.Methods:385 patients with acute pancreatitis were collected from October 2015 to November 2017 in our hospital,according to the severity of the disease were divided into mild group (MAP),moderately severe group (MSAP) and severe group (SAP),patients admitted to hospital within 24h,blood urea nitrogen,blood glucose,blood examination,collection of red blood cells in parallel the BISAP score distribution width,using analysis of variance statistical differences between three groups of data,and draw the RDW combined with BISAP score in predicting the progression of AP receiver operating characteristic curve analysis and its predictive value.Results:Mild group,moderately severe group,severe BISAP score and red blood cell distribution 0width increased sequentially.There was a significant difference in RDW and BISAP scores between the three groups (P＜0.05),and RDW was positively correlated with BISAP score (r=0.384,P＜0.01).The area under the curve of BISAP score,RDW combined with BISAP score for predicting AP disease was 0.879 and 0.894 respectively,and the sensitivity was 77.3％,95.5％,and the specificity was 85.3％ and 76.5％.Conclusion:With the aggravation of AP patients,both the BISAP score and the RDW increase.The combination of the two is helpful to predict the patient's condition.

Regression analysis on influence factors of orthokeratology controlling juvenile myopia progression / 国际眼科杂志(Guoji Yanke Zazhi)

?AlM:To explore the influence factors of orthokeratology controlling development of juvenile myopia. ?Methods: A retrospective analysis of 86 cases ( 169 eyes ) who performed orthokeratology from November 2012 to November 2013 in our hospital was carried out. Ater 2a treatment, diopter increased > -0. 25D as invalid control group (54 eyes), diopter increased ≤ -0. 25D as effective control group ( 115 eyes ) . The difference of various factors between two groups were compared. ?RESULTS: Univariate comparison showed that the two groups had no statistical significance (P>0. 05) in terms of gender, whether wear glasses in the past, anterior corneal diameter before treatment, central corneal thickness, intraocular pressure and anterior chamber depth. However, the two groups had statistical significance (P ? CONCLUSlON: lndependent factors affecting orthokeratology control juvenile myopia development is foundation axial length, age and corneal curvature. For juvenile patients, the longer of foundation axial length, the longer the age, the greater the curvature of cornea, orthokeratology can better control the myopia’s development.