To repair the brain of adult rats with traumatic brain injury by inducing neural regeneration with biological scaffolds. Methods 52 adult male Wistar rats were divided into control group, lesion group, blank chitosan carriers group and bioactive material scaffolds group. The neural regeneration and the origin of the newborn neurons in the injury area were detected through histochemistry, immumochemistry and neural tracing on the 3rd day, 7th day, 2nd week, 4th week, 2nd month and 3rd month after operation. Results After application of bioactive material scaffolds, the BrdU+/Nestin+ and BrdU+/Dcx+ cells in gyrus dentatus (DG) of hippocampus and subventricular zone (SVZ) were significantly more than those of the other groups. The BrdU+/Nestin+, BrdU+/Dcx+ and BrdU+/MAP2+ neural cells in injury area of the bioactive material scaffolds group were significantly more than those of the other groups. After application of DiI to label the SVZ cells, DiI+/NeuN+ neurons were observed in the injury areas. Conclusion Bioactive material scaffolds can activate the neural stem cells in SVZ and DG. The neural stem cells in SVZ can migrate to the injury area and then differentiate into mature neurons.

In this study,liquiritigenin sulfonation was characterized using recombinant human sulfotransferases( SULTs). The chemical structure of liquiritigenin sulfate was determined by ultra-high performance liquid chromatography-quadrupole time-of-flight mass spectrometry( UPLC-Q-TOF-MS/MS). Then model fitting and parameter estimation were performed using the Graphpad Prism V5 software. Various SULT enzymes( SULT1 A1,1 A2,1 A3,1 B1,1 C2,1 C4,1 E1 and 2 A1) were able to catalyze the formation of liquiritigenin-7-O-sulfate. Sulfonation of liquiritigenin-7-hydroxy( 7-OH) by these eight SULT enzymes consistently displayed the classical Michaelis-Menten profile. According to the intrinsic clearance( CLint) value,the sulfonation rates of liquiritigenin-7-OH by expressed SULT enzymes followed the following rank order: SULT1 C4 > SULT1 A3 > SULT1 E1 > SULT1 A1 > SULT1 A2 > SULT1 B1 >SULT1 C2>SULT2 A1. Further,liquiritigenin-7-O-sulfonation was significantly correlated with the SULT1 A3 protein levels( P<0. 05).Then,human embryonic kidney( HEK) 293 cells over expressing SULT1 A3( named as HEK-SULT1 A3 cells) were conducted. As a result,liquiritigenin-7-O-sulfate( L-7-S) was rapidly generated upon incubation of the cells with liquiritigenin. Consistent with SULT1 A3,sulfonation of liquiritigenin-7-OH in HEK-SULT1 A3 cells also followed the Michaelis-Menten kinetics. The derived Vmaxvalues was( 0. 315±0. 009) μmol·min-1·g-1,Kmwas( 7. 04±0. 680) μmol·L^-1,and CLintwas( 0. 045±0. 005) L·min^-1·g^-1. Moreover,the sulfonation characters of liquiritigenin( 7-OH) in SULT1 A3 were strongly correlated with that in HEK-SULT1 A3 cells( P<0. 001).The results indicated that HEK-SULT1 A3 cells have shown the catalytic function of SULT1 A3 enzymes. In conclusion,liquiritigenin was subjected to efficient sulfonation,and SULT1 A3 enzyme plays an important role in the sulfonation of liquiritigenin-7-OH. Significant sulfonation should be the main reason for the low bioavailability of liquiritigenin. In addition,HEK-SULT1 A3 cells were conducted and successfully used to evaluate liquiritigenin sulfonation,which will provide an appropriate tool to accurately depict the sulfonation disposition of liquiritigenin in vivo.
Arylsulfotransferase ; Flavanones/metabolism* ; Humans ; Tandem Mass Spectrometry

Objective:To explore the relationship among cardioversion ,cerebral infarction (CI) and N terminal pro brain natriuretic peptide (NT‐proBNP) level in patients with heart failure (HF) complicated atrial fibrillation (AF) . Methods :A total of 150 HF + AF patients received intravenous drip of amiodarone for cardioversion therapy .Ac‐cording to cardioversion results ,they were divided into cardioversion group (n=100 ) and non‐cardioversion group (n=50) ,NT‐proBNP level change was observed in two groups before and after cardioversion .According to CI on‐set or not ,patients were divided into CI group (n=20) and non‐CI group (n= 130) ,NT‐proBNP level was com‐pared between two groups before and after onset .Results :Within 48h after administration ,a total of 100 patients (66.67% ) recovered to sinus rhythm .Compared with before cardioversion ,NT‐proBNP level significantly reduced [(967.04 ± 366.16) pg/ml vs .(496.21 ± 142.54) pg/ml] after cardioversion in cardioversion group ,and was signifi‐cantly lower than that of non‐cardioversion group (996.76 ± 351.28) pg/ml , P<0.01 all . In CI group ,compared with small size CI group ,there were significant rise in NT‐proBNP level [ (784.21 ± 231.26) pg/ml vs .(1983.24 ± 32.96) pg/ml ,(3562.19 ± 1468.32) pg/ml] in medium and large size CI group , P< 0.05 or <0.01 .Conclusion:NT‐proBNP level at hospitalization possesses predictive value for drug cardioversion effect in HF + AF patients . NT‐proBNP level is related with CI onset .After acute CI ,the higher NT‐proBNP level is ,the larger infarct size is , the poorer prognosis is .

Acquired Immunodeficiency Syndrome ; prevention & control ; Adolescent ; Adult ; China ; Evaluation Studies as Topic ; Female ; Health Education ; Humans ; Male ; Middle Aged ; Rural Health

Objective To investigate and analyze risk factors of re-fracture after operation of osteoporotic hip fracture.Methods Two hundred forty-seven patients receiving operation of osteoporotic hip fracture were retrospectively studied and followed up,and all patients were divided into re-fracture group (54 patients) and no-re-fracture group (193 patients).The related factors such as sex,age,body mass index (BMI),affected side,initial fracture site,operation type,perioperative blood loss,postoperative delirium,postoperative bedridden time,medical complications,Charlson comorbidity index,antiostoporosis therapy,hip function scores with Harris and functional independence measurement (FIM) scores were compared by single factor analysis and multivariate Logistic regression analysis.Results Single factor analysis and multivariate Logistic regression analysis both showed that the risk factors of re-fracture after operation of osteoporotic hip fracture included age,postoperative delirium,hypertension,diabetes mellitus,cerebrovascular disease,antiostoporosis therapy,hip function scores with Harris and FIM scores (P ＜ 0.05 or ＜ 0.01).Conclusions Risk factors of re-fracture after operation of osteoporotic hip fracture include passive factors of age,postoperative delirium and medical complications,and subjective factors of antiostoporosis therapy,hip function scores with Harris and FIM scores.Patients should receive medical treatment positively,enhance antiostoporosis therapy and rehabilitation training of hip function to prevent re-fracture.

Objective:To evaluate the value of improved pulmonary ultrasonography in the follow-up assessment of lung damage in patients who recovered from corona virus disease 2019(COVID-19).Methods:Twenty-two patients who were cured of COVID-19 in Quanzhou First Hospital from January to May 2020 were randomly selected and divided into 7 mild cases, 12 moderate cases and 3 severe cases according to the first high-resolution CT (HRCT) at admission. Six months after recovery, modified lung ultrasonography and HRCT were used prospectively to assess the lung damage and evaluate the correlation and consistency between the two techniques.Results:①There were significant differences in lung damage between the mild group and the moderate group, severe group (all P<0.05), while there was no significant difference between the moderate group and severe group ( P>0.05). ②There was good consistency between the improved lung ultrasound examination and HRCT (Kappa=0.776, P<0.001). ③There was a positive correlation between the score of improved pulmonary ultrasound examination and HRCT Warrick score ( r=0.755, P<0.001). Conclusions:Improved pulmonary ultrasonography can be used as a priority in the evaluation of pulmonary damage follow-up in patients with COVID-19 recovery, reducing the use of CT, and providing favorable evidence for further clinical management.

Microplastics pollution has attracted worldwide attention. Compared with the status quo of microplastics pollution in marine environment and other major rivers and lakes, the relevant data of the Yellow River basin is relatively inadequate. The abundance, types, and spatial distribution characteristics of microplastic pollution in the sediments and surface water of the Yellow River basin were reviewed. Meanwhile, the status of microplastic pollution in the national central city and Yellow River Delta wetland was discussed, and the corresponding prevention and control measures were put forward. The results showed that the spatial distribution of microplastics pollution in sediments and surface water of the Yellow River basin increased from upstream to downstream, especially in the Yellow River Delta wetland. There are obvious differences between the types of microplastics in sediment and surface water in the Yellow River basin, which is mainly related to the materials of microplastics. Compared with similar regions in China, the microplastics pollution levels in national key cities and national wetland parks in the Yellow River basin are in the medium to high degree, which should be taken seriously. Plastics exposure through various ways will cause serious impact on aquaculture and human health in the Yellow River beach area. To control microplastic pollution in the Yellow River basin, it is necessary to improve the relevant production standards, laws and regulations, and improve the capacity of biodegradable microplastics and the degradation capacity of plastic wastes.
Humans ; Microplastics ; Plastics ; Water Pollutants, Chemical/analysis* ; Environmental Monitoring/methods* ; Water ; China

OBJECTIVE To compare the efficacy and safety of lacosamide （LCM） and carbamazepine （CAR） as monotherapy in the treatment of adult patients with newly diagnosed epilepsy. METHODS By methods of retrospective analysis， 84 adult patients with newly diagnosed epilepsy， were admitted to the Department of Neurology， Huaihe Hospital of Henan University during Sept. 2020-Jun. 2022， were divided into the control group （40 cases， receiving CAR treatment） and the observation group （44 cases， receiving LCM treatment） according to different medication regimens. Total response rate， epilepsy seizure frequency， blood lipid levels， and the occurrence of adverse events （AEs） of patients were compared between the 2 groups. RESULTS In the first month after treatment， there was no statistically significant difference in the total response rate between the observation group （63.64%） and the control group （55.00%， P＞0.05）； the frequency of epilepsy seizure in both groups was significantly reduced compared to before treatment （P＜0.05）， but there was no statistically significant difference between 2 groups （P＞0.05）. In the third month after treatment， the total response rate of the observation group （90.91%） was significantly higher than control group （67.50%， P＜0.05）； the frequencies of epilepsy seizure in both groups were significantly reduced compared to before treatment， and the observation group was significantly lower than the control group （P＜0.05）. In the third month after treatment， the levels of total cholesterol （TC）， triglyceride （TG） and low-density lipoprotein cholestrol （LDL-C） in the control group and the level of LDL-C in the observation group were significantly higher than before treatment， and the levels of TC， TG and LDL-C in the observation group were significantly lower than those in the control group （P＜0.05）. There was no statistically significant difference in the incidence of AEs between the observation group （15.91%） and the control group （17.50%， P＞0.05）. CONCLUSIONS Both LCM and CAR have certain effects in the treatment of newly diagnosed epilepsy in adults， which can reduce the frequency of epilepsy seizure in patients and have comparable safety. Meanwhile， LCM has better long-term efficacy than CAR in treating newly diagnosed epilepsy in adults， and its impact on the patient’s blood lipid is smaller than CAR.

OBJECTIVETo study on pharmacokinetics of hydroxycamptothecine (HCPT) nanosuspensions in rats after oral administration.

METHODThe plasma concentrations of HCPT were determined by HPLC-FD. The analysis was performed on a diamonsil C18 column (4.6 mm x 200 mm, 5 microm) with 0.3% acetic acid-triethylamine buffer (pH 5.0) and methanol (57: 43) as mobile phase. The flow rate was 1.0 mL x min(-1); the excitation wave was set at 363 nm, and emission wave was set at 550 nm; the temperature was 35 degrees C. All data of concentration-time of HCPT were treated with pharmacokinetics program DAS 2.0.

RESULTThe concentration-peak area of this assay had a good linear relation in the range from 1 to 50 microg x L(-1), and the minimum limit of quantitation was 1 microg x L(-1). The inter- and intra-day precisions of HCPT were smaller than 4.3%, and the accuracy were between -5.59% and 5.59%. The recoveries of HCPT in three plasma concentrations including high, medial, low concentration were 98.94%, 95.88% and 102.69%, respectively, which was in line with the request of biopharmaceutical analysis. The plasma concentration time profiles of HCPT fitted in two-compartment models well, and the main pharmacokinetic parameters found for HCPT after oral administration were as follows: Cmax 13.10 microg x L(-1), Tmax 0.75 h, t(1/2alpha) 8.242 h, t(1/2beta) 136.122 h, AUC(0-t) 116.77 microg x h x L(-1), AUC(0-infinity) 161.93 microg x h x L(-1).

CONCLUSIONThe HPLC-FD method was simple, with good specificity, reproducibility, and could be used to investigate the pharmacokinetics and determinate the concentration of hydroxycamptothecin. The nanosuspension in this study could accelerate the oral absorption rate of HCPT, and make improving bioavailability of HCPT possible.

ATP-Binding Cassette, Sub-Family B, Member 1 ; antagonists & inhibitors ; Administration, Oral ; Animals ; Calibration ; Camptothecin ; administration & dosage ; analogs & derivatives ; chemistry ; pharmacokinetics ; pharmacology ; Linear Models ; Male ; Nanostructures ; Rats ; Rats, Wistar ; Suspensions

To study the synthetic method and antibacterial activity of water-soluble fused heterocyclic compounds containing piperazine group, the nucleophilic substitution of 3-(4-chlorophenyl)-6-substituted-s-triazolo-[3, 4-b] [1, 3, 4] thiadiazoles (2a - n) with piperazine in the presence of phase transfer catalyst TBAI afforded 3-(4-piperazin-1-yl-phenyl)-6-substituted-s-triazolo [3, 4-b] [1, 3, 4] thiadiazole and then followed by acid treatment afforded 3-(4-piperazin-1-yl-phenyl)-6-substituted-s-triazolo [ 3, 4-b] [1, 3, 4] thiadiazole hydrochlorides (3a - n). Twenty-eight new compounds were synthesized and their structures were confirmed by IR, 1H NMR, MS and element analysis. The in vitro antibacterial activities of all newly synthesized compounds were tested against Gram positive bacteria and Gram negative bacteria with the standard 2-fold agar dilution method. Fourteen title compounds exhibited potential antibacterial activities in vitro. The structures of these compounds needed to be further optimized.
Anti-Bacterial Agents ; chemical synthesis ; chemistry ; pharmacology ; Bacillus subtilis ; drug effects ; Escherichia coli ; drug effects ; Microbial Sensitivity Tests ; Molecular Structure ; Pseudomonas aeruginosa ; drug effects ; Staphylococcus aureus ; drug effects ; Structure-Activity Relationship ; Thiadiazoles ; chemical synthesis ; chemistry ; pharmacology ; Triazoles ; chemical synthesis ; chemistry ; pharmacology