OBJECTIVE:To establish a method for simultaneous determination of chlorogenic acid,geniposide,gentiopicro-side,baicalin,berberine hydrochloride and chrysophanol in Longze xiongdan capsule. METHODS:HPLC method was adopted. The separation was performed on Dikma Platisil ODS column with mobile phase consisting of acetonitrile-0.1% phosphoric acid so-lution(gradient elution)at the flow rate of 1.0 mL/min. The detection wavelength were set at 254 nm for geniposide,gentiopicro-side,baicalin,berberine hydrochloride and chrysophanol and 327 nm for chlorogenic acid. The column temperature was 30 ℃. RE-SUITS:Linear ranges of chlorogenic acid,geniposide,gentiopicroside,baicalin,berberine hydrochloride and chrysophanol were 0.0082-0.164 μg (r=0.9998),0.027-0.540 μg(r=0.9997),0.02525-0.505 μg(r=0.9998),0.046-0.920 μg(r=0.9997), 0.059-1.180 μg(r=0.9995),0.00805-0.161 μg(r=0.9994),respectively;the limits of quantitation were 0.61,0.59,0.87,0.51, 0.92,0.65 ng,and the limits of detection were 1.67,1.73,1.96,1.82,2.31,1.87 ng. RSDs of precision,stability and reproduc-ibility tests were lower than 2.0%;recoveries were 95.34%-98.27%(RSD=1.2%,n=9),98.18%-101.92%(RSD=1.4%,n=9), 97.36% -101.09%(RSD=1.0% ,n=9),95.24% -98.93%(RSD=1.3% ,n=9), 95.76% -99.34%(RSD=1.5% ,n=9), 95.00%-98.75%(RSD=1.4%,n=9),respectively. CONCLUSIONS:The method is simple,accurate,reproducible and suitable for simultaneous determination of chlorogenic acid,geniposide,gentiopicroside,baicalin,berberine hydrochloride,chrysophanol in Longze xiongdan capsule.

OBJECTIVE:To estabish a RP-HPLC method for the content determination of forsythin of Yinqiao jiedu pills.METHODS:The determination was performed using SHIM-PACK VP-ODS column(150 mm ? 4.6 mm,5 ?m) with column temperature at 30 ℃.The mobile phase was acetonitril-water(25∶75) with flow rate at 1.0 mL?min-1.The detective wavelength was set at 277 nm.RESULTS:The linear range of forsythin was 0.453～3.481 ?g(r=0.999 8).The mean recovery was 99.50%(RSD=1.15%,n=6).CONCLUSION:The method was simple,rapid,accurate and suitable for the quality control of Yinqiao jiedu pills.

Objective To study protective effects of acanthoic acid ( AA) against acute liver injury. Methods Sixty mice were randomly divided into six groups (n=10 each),including normal control group,model control group,positive control group (N-acetyl -L- cysteine,NAC,300 mg·kg-1),and AA at small (50 mg·kg-1),middle (100 mg·kg-1),and high (200 mg·kg-1 ) dose groups. Each group received respective treatment for 3 days and fasted for 16 h before the last dose. All animals except of the normal control group were treated with tacrine (35 mg·kg-1 ) 1 h after the treatments. Hepatic pathological and serum biochemical changes were observed. Results The high-dose of AA significantly reduced the levels of AST (143±46) U·L-1 ,ALT (32±9) U·L-1 ,LDH (1 218±312) U·L-1 ,MDA (3. 24±0. 48) μmol·g-1 ,and GSH (417±15) mg·g-1 compared with the model control group (P<0. 05 or P<0. 01). Liver injury was also ameliorated in AA high dose group.Conclusion AA has a protective effect on acute liver injury in mice.

Robotic catheter minimally invasive operation requires that the driver control system has the advantages of quick response, strong anti-jamming and real-time tracking of target trajectory. Since the catheter parameters of itself and movement environment and other factors continuously change, when the driver is controlled using traditional proportional-integral-derivative (PID), the controller gain becomes fixed once the PID parameters are set. It can not change with the change of the parameters of the object and environmental disturbance so that its change affects the position tracking accuracy, and may bring a large overshoot endangering patients' vessel. Therefore, this paper adopts fuzzy PID control method to adjust PID gain parameters in the tracking process in order to improve the system anti-interference ability, dynamic performance and tracking accuracy. The simulation results showed that the fuzzy PID control method had a fast tracking performance and a strong robustness. Compared with those of traditional PID control, the feasibility and practicability of fuzzy PID control are verified in a robotic catheter minimally invasive operation.
Algorithms ; Computer Simulation ; Fuzzy Logic ; Humans ; Minimally Invasive Surgical Procedures ; Robotic Surgical Procedures ; Robotics

Objective To explore the influence of tranSCription factor FOXC2 in angiogenesis of breast cancer MCF-7 cells and to clarify the action mechanism of FOXC2 in promoting tumor angiogenesis.Methods FOXC2 gene and empty vector gene were transfected into breast cancer of MCF-7 cell line with FOXC2 lentivirus gene transfection technique to obtain stable transfection cell line. The MCF-7 cells were devided into non-transfected group,empty-vector group and over-expression group.Matrigel assay and Transwell chamber test were used to observe the changes of tube formation and migration ability of human umbilical vein endothelial cells (HUVECs)in MCF-7 cells supernatant in various groups. PT-PCR and Western blotting methods were applied to detect the expressions of FOXC2,DLL4 and Notch1 mRNA and protein.Results Compared with non-tranfected group and empty-vector group,the tube formation and the migration number of HUVECs in FOXC2 over-expression group were increased(P<0.05);the expressions of FOXC2,DLL4 and Notch1 mRNA and proteins were significantly increased(P<0.05).Conclusion The FOXC2 over-expression in MCF-7 cells can increase the tube formation ability and migration ability of HUVECs,and its mechanism may be related to Notch signaling pathway.

Objective To evaluate the MUC1 promoter's role in driving gene expression in pancreatic cancer and its therapeutic significance.Methods Two plasmids were made.The plasmid pEGFP-MUC1N1 contained MUC1 promoter fragment connected to the pEGFP-N1 vector with the EGFG reporter gene.The pShuttle-MUC1-EGFP plasmid contained MUC1 promoter fragment and EGFP reporter gene connected to pShuttle plasmid.Lipofectamine 2000 was used to transfect the two plasmids into cells of MUC1-positive human pancreatic cell line Panc-1 and MUC1-negative human cervical carcinoma Hela.Fluorescence microscopy and flow cytometry compared the specificity and activity of the MUC1 promoter and CMV promoter.Results Reporter gene EGFP-positive cells 48 hours after transfection with pEGFP-MUC1-N1 and pShuttleMUC1-EGFP plasmid were 69.6％ and 63.6％ respectively,in Panc-1 cells,and 4.2％ and 3.7％ respectively,in Hela cells.Conclusions MUC1 promoter can drive reporter gene activity in MUC1-positive tumor cells targeting functional expression.There is potentially a use of targeted therapy in pancreatic cancer at the genetic level.

Burkitt lymphoma (BL) is an aggressive B-cell non-Hodgkin lymphoma which often occurs in children. The cure rate of BL is significantly increased with the wide application of short-duration and high-intensity immunochemotherapy, however, chemotherapy-related adverse reactions are still a big problem in adult patients and human immunodeficiency virus (HIV) positive patients. Meanwhile, the absence of effective immune targeting new drugs in patients with relapsed and refractory BL needs to be solved clinically. How to optimize the therapeutic regimen to reduce the chemotherapy-related adverse reactions and develop effective immune targeting new drugs is the hot spot in current research. This paper reviews the treatment progress of BL according to the 59th American Society of Hematology (ASH) Annual Meeting.

The aim of this study was to investigate the pattern of distribution of mating type (MAT) genes of Tuber indicum in ectomycorhizosphere soils from natural T. indicum-producing areas and cultivated truffle orchards and ascocarp samples from different regions. Quantitative real-time PCR and multiplex PCR were used to weight the copy numbers of MAT1-1-1 and MAT1-2-1 in natural truffle soils and cultivated orchard soils. The effect of limestone on the pattern of truffle MAT genes and the correlation between soil properties and the proportion of MAT genes were also assessed. These results indicated that an uneven and nonrandom distribution of MAT genes was common in truffle-producing areas, cultivated truffle orchards, and ascocarps gleba. The competition between the two mating type genes and the expansion of unbalanced distribution was found to be closely related to truffle fructification. Limestone treatments failed to alter the proportion of the two mating type genes in the soil. The content of available phosphorus in soil was significantly correlated with the value of MAT1-1-1/MAT1-2-1 in cultivated and natural ectomycorhizosphere soils. The application of real-time quantitative PCR can provide reference for monitoring the dynamic changes of mating type genes in soil. This study investigates the distributional pattern of T. indicum MAT genes in the ectomycorhizosphere soil and ascocarp gleba from different regions, which may provide a foundation for the cultivation of T. indicum.
Calcium Carbonate ; Multiplex Polymerase Chain Reaction ; Phosphorus ; Polymerase Chain Reaction ; Real-Time Polymerase Chain Reaction ; Soil

Estrogen receptor (esr) mediates the effects of estrogen on the expression of related genes, thereby regulating the growth and reproduction of mammals. To investigate the effect of retrotransposon insertion polymorphism (RIP) of the porcine esr gene on porcine growth performance, retrotransposon insertion polymorphism of the esr gene were predicted by comparative genomics and bioinformatics, and PCR was used to verify the insertion polymorphisms in different porcine breeds. Finally, the correlation analysis between the genotypes and performance of Large White pigs was conducted. The results showed that four retrotransposon polymorphic sites were identified in the esr1 and esr2 genes, which are esr1-SINE- RIP1 located in intron 2 of the esr1 gene, esr1-LINE-RIP2 and RIP3-esr1- SINE located in intron 5 of the gene, and esr2-LINE-RIP located in intron 1 of the esr2 gene, respectively. Among them, insertion of a 287 bp of SINE into intron 2 of the esr1 gene significantly affected (P<0.05) the live back fat thickness and 100 kg body weight back fat thickness of Large White pigs. Moreover, the live back fat thickness and back fat thickness at 100 kg body weight of homozygous with insertion (SINE+/+) was significantly greater than that of heterozygous with insertion (SINE+/-) and homozygous without insertion (SINE-/-). Therefore, esr1-SINE-RIP1 could be used as a molecular marker to assist the selection of deposition traits in Large White pigs.
Animals ; Genotype ; Introns/genetics* ; Phenotype ; Polymorphism, Genetic/genetics* ; Retroelements/genetics* ; Swine/genetics*

OBJECTIVE: To establish the mode of anterior cervical surgery in outpatient setting, and evaluate its preliminary effectiveness. METHODS: A clinical data of patients who underwent anterior cervical surgery between January 2022 and September 2022 and met the selection criteria was retrospectively analyzed. The surgeries were performed in outpatient setting ( n=35, outpatient setting group) or in inpatient setting ( n=35, inpatient setting group). There was no significant difference between the two groups ( P>0.05) in age, gender, body mass index, smoking, history of alcohol drinking, disease type, the number of surgical levels, operation mode, as well as preoperative Japanese Orthopaedic Association (JOA) score, visual analogue scale score of neck pain (VAS-neck), and visual analogue scale score of upper limb pain (VAS-arm). The operation time, intraoperative blood loss, total hospital stay, postoperative hospital stay, and hospital expenses of the two groups were recorded; JOA score, VAS-neck score, and VAS-arm score were recorded before and immediately after operation, and the differences of the above indexes between pre- and post-operation were calculated. Before discharge, the patient was asked to score satisfaction with a score of 1-10. RESULTS: The total hospital stay, postoperative hospital stay, and hospital expenses were significantly lower in the outpatient setting group than in the inpatient setting group ( P<0.05). The satisfaction of patients was significantly higher in the outpatient setting group than in the inpatient setting group ( P<0.05). There was no significant difference between the two groups in operation time and intraoperative blood loss ( P>0.05). The JOA score, VAS-neck score, and VAS-arm score of the two groups significantly improved at immediate after operation when compared with those before operation ( P<0.05). There was no significant difference in the improvement of the above scores between the two groups ( P>0.05). The patients were followed up (6.67±1.04) months in the outpatient setting group and (5.95±1.90) months in the inpatient setting group, with no significant difference ( t=0.089, P=0.929). No surgical complications, such as delayed hematoma, delayed infection, delayed neurological damage, and esophageal fistula, occurred in the two groups. CONCLUSION The safety and efficiency of anterior cervical surgery performed in outpatient setting were comparable to that performed in inpatient setting. Outpatient surgery mode can significantly shorten the postoperative hospital stay, reduce hospital expenses, and improve the patients' medical experience. The key points of the outpatient mode of anterior cervical surgery are minimizing damage, complete hemostasis, no drainage placement, and fine perioperative management.
Humans ; Treatment Outcome ; Cervical Vertebrae/surgery* ; Outpatients ; Retrospective Studies ; Blood Loss, Surgical ; Spinal Fusion ; Neck Pain