Objective:To investigate the effect of Manchu medicine north-Schisandra chinensis polysaccharide (NSCP) on the human neutrophils treated by lipopolysaccharide (LPS) cultivated in vitro,and to elucidate its anti inflammatory mechanism.Methods:The neutrophilic inflammatory cell model was established with LPS.The experiment included control group,LPS group (1.0 mg · L-1) and NSCP group (1.25,2.50 and 5.00 g · L-1),the cells in NSCP group were first treated with LPS for 60 min,and then treated with different concentrations of NSCP.The levels of TNF-α in neutrophils were measured with ELISA and the apoptotic rates were detected by flow cytometry.Results:The level of TNF-a in LPS group was increased compared with control group (P＜0.05).The level of TNF-α in NSCP group was decreased compared with LPS group (P＜0.05).The apoptotic rate in LPS group was decreased compared with control group (P＜0.05);the apoptotic rates in NSCP group were increased with the increasing of time and dose,and the best effect was found 16 h after treatment with 5 g · L-1NSCP:the apoptotic rate in NSCP group was significantly increased compared with LPS group (P＜0.05).Conclusion:NSCP can perform the anti-inflammation effect through the suppression of LPS-induced TNF-α secretion in neutrophils and the promotion of neutrophils apoptosis.

Objective To analyze the refractive prediction error(PE)in combined vitrectomy,phacoemulsification,and intraocular lens(IOL)implantation for patients with macular disease and cataract.Methods This study encom-passed 96 patients(96 eyes)diagnosed with macular disease and cataract,who underwent combined vitrectomy,phacoe-mulsification and IOL implantation at the Department of Ophthalmology in Xijing Hospital,Air Force Military Medical Uni-versity from May 2014 to November 2022.The best corrected visual acuity(BCVA)and actual spherical equivalent(SE)were studied,PE and absolute refractive error(ARE)were calculated,and the correlations between PE and axial length(AL),anterior chamber depth(ACD),lens thickness(LT),flat keratometry(Kf),steep keratometry(Ks),mean kera-tometry(Km),corneal astigmatism degree(cylinder,Cyl),intraocular pressure(IOP),BCVA,corneal astigmatism axis,the classification of macular diseases,and the type of intraoperative vitreous fillers were analyzed.Results In the early postoperative period(within 3 days after surgery),no statistically significant disparity in BCVA was observed compared to preoperative data among the 96 patients studied(P＞0.05).The ARE was determined to be(1.47±2.54)D,indicating a substantial deviation between the actual SE and preoperative predictive refraction of the 96 patients(P＜0.05).Among them,61 patients had a myopic shift,35 patients had a hyperopic shift,and the values of PE were(-1.81±3.07)D and(0.87±0.96)D,respectively.At the 1-month mark after surgery,there was no statistically significant difference in BCVA compared to the preoperative data of 12 follow-up patients(P＞0.05).Similarly,no statistically significant differences were found between every two of the three data,namely the actual SE one month after surgery,the preoperative predictive refraction,and the actual SE in the early postoperative period of the 12 follow-up patients(all P＞0.05).Also,no disparity was observed in BCVA at the last follow-up(P＞0.05)among the 6 patients who were followed up for over 1 year(long-term postoperative follow-up).The correlation analysis revealed that,in the early postoperative period,the PE of patients with myopic shift was negatively correlated with both preoperative AL and Cyl measurements(both P＜0.05).The early postoperative PE of patients with myopic shift was associated with the diagnostic classification of macular diseases(P＜0.05),and the degree of myopic shift was observed to be significantly greater in patients with pathological myopia macular holes compared to those with other macular diseases(P＜0.05).Additionally,the early postoperative PE of patients with myopic shift was uncorrelated with preoperative ACD,TL,Kf,Ks,Km,IOP,BCVA,the type of intraoperative vitreous fillers and the corneal astigmatism axis(all P＞0.05).In contrast,for patients exhibiting hyperopic shift,the PE observed in the early postoperative period exhibited a positive correlation with preoperative Cyl(P＜0.05).PE was also correlated with the type of intraoperative vitreous fillers(P＜0.05),and the degree of hyperopic shift was notably enhanced when the intraoperative vitreous cavity was filled with silicone oil(P＜0.05).The PE of patients with hyperopic shift observed in the early postoperative period exhibited no correlation with preoperative AL,ACD,TL,Kf,Ks,Km,IOP,BCVA,the diagnos-tic classification of macular diseases or the astigmatism axis(all P＞0.05).Conclusion Refractive prediction error may occur in patients with macular disease and cataract in the initial postoperative period after the vitrectomy combined with phacoemulsification and IOL implantation,predominantly caused by myopic shift.However,over time,there is a signifi-cant reduction in the magnitude of this refractive error.The direction and extent of diopter drift appear to be influenced by preoperative AL,Cyl,the specific diagnosis of macular disease,and the type of vitreous cavity filler utilized in the surgical procedure.

Drug-induced hyperglycemia/diabetes is a global issue. Some drugs induce hyperglycemia by activating the pregnane X receptor (PXR), but the mechanism is unclear. Here, we report that PXR activation induces hyperglycemia by impairing hepatic glucose metabolism due to inhibition of the hepatocyte nuclear factor 4-alpha (HNF4α)‒glucose transporter 2 (GLUT2) pathway. The PXR agonists atorvastatin and rifampicin significantly downregulated GLUT2 and HNF4α expression, and impaired glucose uptake and utilization in HepG2 cells. Overexpression of PXR downregulated GLUT2 and HNF4α expression, while silencing PXR upregulated HNF4α and GLUT2 expression. Silencing HNF4α decreased GLUT2 expression, while overexpressing HNF4α increased GLUT2 expression and glucose uptake. Silencing PXR or overexpressing HNF4α reversed the atorvastatin-induced decrease in GLUT2 expression and glucose uptake. In human primary hepatocytes, atorvastatin downregulated GLUT2 and HNF4α mRNA expression, which could be attenuated by silencing PXR. Silencing HNF4α downregulated GLUT2 mRNA expression. These findings were reproduced with mouse primary hepatocytes. Hnf4α plasmid increased Slc2a2 promoter activity. Hnf4α silencing or pregnenolone-16α-carbonitrile (PCN) suppressed the Slc2a2 promoter activity by decreasing HNF4α recruitment to the Slc2a2 promoter. Liver-specific Hnf4α deletion and PCN impaired glucose tolerance and hepatic glucose uptake, and decreased the expression of hepatic HNF4α and GLUT2. In conclusion, PXR activation impaired hepatic glucose metabolism partly by inhibiting the HNF4α‒GLUT2 pathway. These results highlight the molecular mechanisms by which PXR activators induce hyperglycemia/diabetes.