1.Cellular toxicity and anti-tumor efficacy of iRGD modified doxorubixin loaded sterically stabilized liposomes.
Bo ZHAO ; Yuchen FAN ; Xueqing WANG ; Wenbing DAI ; Qiang ZHANG ; Xinglin WANG
Acta Pharmaceutica Sinica 2013;48(3):417-22
iRGD-modified sterically stabilized liposomes loaded doxorubicin (iRGD-SSL-DOX) were prepared and their cellular toxicity and anti-tumor efficacy were evaluated, comparing to doxorubixin loaded sterically stabilized liposomes (SSL-DOX) and RGD modified doxorubixin loaded sterically stabilized liposomes (RGD-SSL-DOX). The iRGD peptide, with both tumor targeting and cell penetrating functions, was conjugated to DSPE-PEG-NHS and DSPE-PEG-iRGD was obtained. DSPE-PEG-RGD was gained in the same way. iRGD-SSL-DOX, RGD-SSL-DOX and SSL-DOX were prepared by ammonium sulfate gradient method. The size and zeta potential of the liposomes were characterized by dynamic laser light scattering. The cellular toxicity study was done on B16 melanoma cell line and the anti-tumor efficacy study was carried on B16 cell line bearing C57BL/6 mice. The results showed that the particle sizes of liposomes were all around 90-100 nm. DOX entrapment efficiency was above 95%. The formulations were with good preparation reproducibility. iRGD-SSL-DOX showed no significant difference in B16 cellular toxicity with SSL-DOX and RGD-SSL-DOX, but the anti-tumor efficacy on B16 melanoma bearing C57BL/6 mice was significantly better than that of SSL-DOX, similar as that of RGD-SSL-DOX. Therefore, iRGD modified liposomes loaded DOX would be a promising drug delivery system for tumor therapy.
2.Progress in Diagnosis and Treatment of Gastric Outlet Obstruction
Chinese Journal of Gastroenterology 2023;28(12):747-751
Gastric outlet obstruction,also known as pyloric obstruction or stenosis,refers to pyloric stenosis caused by mechanical compression or obstruction of the duodenum,distal stomach,pyloric duct,and anterior pyloric region.Patients will have the phenomenon that gastric contents cannot pass,accompanied by nausea,vomiting,abdominal pain,and loss of appetite and other related symptoms,which greatly reduces the quality of life of patients,has a wide range of individual impact,and has a high degree of harm.Scientific treatment of this disease has extremely important social significance.Based on the pathogenesis,clinical diagnosis and treatment strategies of gastric outlet obstruction,this article will make a certain summary for the diagnosis and treatment of gastric outlet obstruction for reference.
3.Influential factors of personal burden rate in cerebral ischemic patients based on DRGs payment model
Peilin YU ; Bonian CHEN ; Yue YI ; Shuai MA ; Yuchen FAN
Modern Hospital 2024;24(2):258-262
Objective This study aimed to investigate the factors influencing the personal burden rate incerebral ische-mic patients,compare the difference in the burden rate among the patients with varying degrees of cerebral ischemia,provide a reference for establishing a personal burden rate evaluation,and propose suggestions for control its increase.Methods The medi-cal insurance data were collected from 8164 discharged patients in a tertiary hospital in Tianjin between January and December 2022.With the data,the Generalized Linear Model was utilized to analyze the factors affecting the personal burden rate across different Diagnosis Related Groups(DRGs).Results Statistically significant differences were observed in the cost structure a-mong different DRGs.Age,length of hospital stays,total hospitalization cost,hospital admission mode,number of hospitaliza-tions,and type of medical insurance significantly impacted the personal burden rate.The personal burden rate was inversely cor-related with age and length of hospital stays,but directly correlated with the total hospitalization cost.The patients admitted from emergency,first-time hospitalization,and those covered by the basic medical insurance program for urban employees had a lower personal burden rate.Conclusion Hospitals should establish diverse personal burden rate performance evaluation standards for patients with different types of medical insurance,incorporating factors such as average length of hospital stays and average hospi-talization cost.A more equitable hospital internal assessment plan should be developed by considering patients admitted to differ-ent departments and aligning with the characteristics of clinical pathways.Medical institutions should minimize self-funded pro-jects under declared medical insurance,increase the enrollment of cases in DRGs,and promote tiered diagnosis and treatment to reduce the personal burden rate for patients.
4.Based on cluster management to explore the effect of improving oral care in ventilator-associated pneumonia
Dan A ; Yuchen NING ; Pengyu SUN ; Changyun WEI ; Jing TIAN ; Yubing LI ; Fan LI
Chinese Journal of Practical Nursing 2021;37(24):1892-1896
Objective:To explore the effect of improving oral care based on cluster management in ventilator-associated pneumonia (VAP).Methods:Totally 126 VAP patients from February 2019 to February 2020 in our hospital were selected. The patients admitted from February 2019 to August 2019 were the control group, and the patients from September 2019 to February 2020 were the observation group, 63 cases in each group. The control group was treated with cluster nursing, and the observation group was treated with cluster nursing with improved oral care. The EICU hospitalization time, mechanical ventilation time, plaque index, pathogen infection, oral cleaning score, oral bleeding ulcer and aspiration were compared between the two groups.Results:After nursing, the EICU hospitalization time and mechanical ventilation time in the observation group were (18.34±4.15), (8.56±2.14) days, which were shorter than (23.56±4.82), (12.04±3.10) days in the control group ( t value was -6.514, -7.333, P<0.05). During the nursing process, the incidence of bleeding ulcer and aspiration in the observation group were 12.70% (8/63), 6.35% (4/63), which were lower than 30.16% (19/63), 20.63% (13/63) in the control group ( χ 2 values were 5.704, 5.508, P<0.05). After nursing, the plaque index of the two groups was lower than that before nursing ( t values were 12.516, 6.654, P<0.05), and the plaque index of the observation group was lower than that of the control group ( t value was -6.860, P<0.05). During the nursing process, the incidence of pathogenic bacteria infection in the observation group was 28.57% (18/63), which was lower than 49.21% (31/63) in the control group ( χ 2 value was 5.644, P<0.05). After nursing, the oral cleaning score of the two groups was lower than that before nursing ( t values were 11.118, 6.240, P<0.05), and the score of the observation group was (14.38±3.60) points, which was lower than (18.20±4.11) points of the control group ( t value was -5.549, P<0.05). Conclusion:Auricular pressure therapy can effectively improve the constipation symptoms, shorten the time required to take effect for the main symptoms, and improve the quality of life of schizophrenic patients.
5.CircR2Disease v2.0:An Updated Web Server for Experimentally Validated circRNA-disease Associations and Its Application
Fan CHUNYAN ; Lei XIUJUAN ; Tie JIAOJIAO ; Zhang YUCHEN ; Wu FANG-XIANG ; Pan YI
Genomics, Proteomics & Bioinformatics 2022;20(3):435-445
With accumulating dysregulated circular RNAs(circRNAs)in pathological processes,the regulatory functions of circRNAs,especially circRNAs as microRNA(miRNA)sponges and their interactions with RNA-binding proteins(RBPs),have been widely validated.However,the collected information on experimentally validated circRNA-disease associations is only preliminary.Therefore,an updated CircR2Disease database providing a comprehensive resource and web tool to clarify the relationships between circRNAs and diseases in diverse species is necessary.Here,we present an updated CircR2Disease v2.0 with the increased number of circRNA-disease associations and novel characteristics.CircR2Disease v2.0 provides more than 5-fold experimentally validated circRNA-disease associations compared to its previous version.This version includes 4201 entries between 3077 circRNAs and 312 disease subtypes.Secondly,the information of circRNA-miRNA,circRNA-miRNA-target,and circRNA-RBP interactions has been manually collected for various diseases.Thirdly,the gene symbols of circRNAs and disease name IDs can be linked with various nomenclature databases.Detailed descriptions such as samples and journals have also been integrated into the updated version.Thus,CircR2Disease v2.0 can serve as a platform for users to systematically investigate the roles of dysregulated circRNAs in various diseases and further explore the posttranscriptional regulatory function in diseases.Finally,we propose a computational method named circDis based on the graph convolutional network(GCN)and gradient boosting decision tree(GBDT)to illustrate the applications of the CircR2Disease v2.0 database.
6.Progress in Diagnosis and Treatment of Gastric Outlet Obstruction
Chinese Journal of Gastroenterology 2023;28(12):761-765
Gastric outlet obstruction,also known as pyloric obstruction or stenosis,refers to pyloric stenosis caused by mechanical compression or obstruction of the duodenum,distal stomach,pyloric duct,and anterior pyloric region.Patients will have the phenomenon that gastric contents cannot pass,accompanied by nausea,vomiting,abdominal pain,and loss of appetite and other related symptoms,which greatly reduces the quality of life of patients,has a wide range of individual impact,and has a high degree of harm.Scientific treatment of this disease has extremely important social significance.Based on the pathogenesis,this article reviewed the clinical diagnosis and treatment strategies of gastric outlet obstruction,thus providing some reference for the diagnosis and treatment of gastric outlet obstruction.
8.Clinical study on early recognition of hepatitis B cirrhosis by two-dimensional shear wave elastography
Yunling FAN ; Yuchen YANG ; Haohao YIN ; Wen SHEN ; Yuli ZHU
Journal of Chinese Physician 2024;26(4):494-498
Objective:To evaluate the feasibility of using two-dimensional shear wave elastography (2D-SWE) based liver and spleen elastic hardness (L/S-SWE) in patients with liver cirrhosis, and to determine the exclusion and diagnostic thresholds for early identification of liver cirrhosis.Methods:A total of 574 patients with chronic hepatitis B (hepatitis B for short) were included in this study. The clinical characteristics, L-SWE and S-SWE of the patients were collected, and the differences between cirrhosis group ( n=311) and non cirrhosis group ( n=263) were analyzed. The success rate and stability of liver and spleen elastic surgery were evaluated in two groups. The receiver operating characteristic (ROC) curve was used to analyze the efficacy of L-SWE, S-SWE, aspartate aminotransferase to platelet ratio index (APRI) alone and in combination in diagnosing liver cirrhosis. By analyzing the ROC curve, the double threshold for excluding and diagnosing liver cirrhosis was determined. Results:There was a statistically significant difference in platelet count and APRI between the cirrhosis group and the non cirrhosis group (all P<0.05). In the feasibility assessment of 2D-SWE technology, the success rate and stability of liver and spleen elastic operation were relatively high (success rate: 97.2% vs 81.3%; stability: 0.92 vs 0.84), and the success rate and stability of L-SWE operation were slightly better than S-SWE. The success rate of S-SWE operation in the cirrhosis group was higher than that in the non cirrhosis group ( P<0.05). The correlation analysis results showed that L-SWE, S-SWE, APRI were positively correlated with liver tissue pathological grading ( r=0.677, 0.528, 0.149, all P<0.05). The areas under the ROC curve for identifying liver cirrhosis using L-SWE, S-SWE, and APRI were 0.959, 0.896, and 0.706, respectively. When L-SWE and S-SWE were combined, the area under the ROC curve was 0.987, the sensitivity was 92.6%, and the specificity was 96.0%. The Delong test showed that the combined diagnosis of L-SWE and S-SWE had the same diagnostic efficacy as using L-SWE alone for liver cirrhosis ( P>0.05). Further analysis of the ROC curve showed that the likelihood of liver cirrhosis was low when L-SWE was less than 9.4 kPa, and high when L-SWE was greater than 12.0 kPa. Patients between 9.4 and 12.0 kPa can undergo further S-SWE testing; If the S-SWE was between 17.5 and 29.3 kPa, it was classified as 2D-SWE, which was difficult to determine whether there was liver cirrhosis, and further liver puncture and other examinations were needed. Conclusions:2D-SWE technology has high operational feasibility in the diagnosis of liver cirrhosis, and combined with S-SWE, it helps to improve the diagnostic efficiency of early non-invasive identification of liver cirrhosis, enabling more patients to avoid unnecessary liver puncture examinations.
9.Increased peripheral mRNA levels of Trx-1 and Trx-2 associated with the progression of hepatitis B induced acute-on-chronic liver failure
Yang YANG ; Yuchen FAN ; Zehua ZHAO ; Xiangfen JI ; Chengyun DOU ; Jianjun ZHANG ; Kai WANG
Chinese Journal of Experimental and Clinical Virology 2014;28(2):102-104
Objective To investigate the role of Trx-1 and Trx-2 in the progression of hepatitis B associated acute-on-chronic liver failure (ACHBLF).Methods We determined the mRNA levels of Trx1,Trx-2 in peripheral blood mononuclear cells (PBMC) from a cohort of 60 patients with ACHBLF,38 patients with chronic hepatitis B (CHB) and 26 healthy controls by fluorescence real-time quantiative PCR.Results We demonstrated that there were significantly higher expressions of Trx-1 and Trx-2 mRNA in patients with ACHBLF than those patients with CHB and healthy controls (P < 0.05,respectively).Furthermore,the levels of Trx-1 and Trx-2 mRNA significantly correlated with total bilirubin (TBIL) levels in patients with ACHBLF (P < 0.05,respectively).The relative expression of Trx-1 mRNA significantly correlated with model for end-stage liver disease (MELD) scores in patients with ACHBLF (P < 0.05).Besides,Trx-1 and Trx-2 levels were higher in non-survivors with ACHBLF than survivors with ACHBLF (P <0.05,respectively).The relative expression of Trx-1 mRNA was predictive of 90-day mortality using Kaplan-Meier analysis (P < 0.05),with a sensitivity of 75% and a specificity of 64.29%.Conclusion Trx and associated oxidative stress may play an important role in the pathogenesis and progression of ACHBLF,the mRNA level of Trx-1 and Trx-2 may be associated with disease severity and poor prognosis of ACHBLF.
10.Interleukin-10 is associated with immune phases of patients with chronic hepatitis B
Na WANG ; Yuchen FAN ; Kai WANG
Chinese Journal of Experimental and Clinical Virology 2016;(1):87-90
Objective To determine the expression of interleukin ( IL )-10 and its associated cytokines in different immune phases of patients with chronic hepatitis B.Method A total of 197 patients with chronic hepatitis B were included, including 40 for immune tolerance( IT) phase, 97 immune clearance ( IC) phase, 26 low replication ( LR) phase, and 34 for HBeAg negative hepatitis B ( ENH) phase.The level of IL-10, IL-6 and TNF-αin plasma was determined using enzyme-linked immunosorbent assay ( ELISA) .The level of IL-10, IL-6 and TNF-αin peripheral blood mononuclear cells ( PBMCs ) was determined using quantitative real-time polymerase chain reaction( RT-PCR) .Results The plasma levels of IL-10, IL-6 and TNF-αin chronic hepatitis B patients were significantly higher than healthy controls (all P<0.05) , as well as mRNA levels of these cytokines shared the same condition.The plasma level of IL-10 and IL-10 mRNA level in PBMCs were significantly correlated with ALT, AST and IL-6 ( P<0.05 ) and negatively correlated with TNF-α(P<0.05).The levels of plasma IL-10 and IL-10 mRNA in patients with immune clearance phase was significantly higher than patients with immune tolerance phase and low replication phase(P<0.05).IL-10mRNA in patients with HBeAg negative hepatitis B phase was higher than that with immune tolerance phase (P<0.05).Conclusion IL-10 might contribute to immune phases of chronic HBV infection.