Objective:To explore the influence of total alkaloids of Corydalis Ochotensis(TAOCO) on the behavior and pathomorphology of brain tissue of the rats with Alzheimer's disease(AD) induced by β-amyloid protein 25-35(Aβ25-35),and to clarify its therapeutic effects on the AD rats.Methods:The Wistar rats were divided into mormal control group(treated with 0.5 mL·100 g-1 distilled water) (n=9),model group(treated with 0.5 mL·100 g-1 distilled water)(n=9),positive drug group(treated with 1.75 mg·kg-1 donepezil hydrochloride)(n=9),and low,middle and high doses (treated with 2.0,4.0 and 8.0 mg·kg-1) of TAOCO groups(n=8,n=9,n=9).The rat AD models were made by injecting Aβ25-35 into hippocampus.On the 14th day after operation,the rats were administered for 7 d.Morris water maze test was used to detect the spatial learning and memory ability of the rats;dark avoidance task was used to observe the passive avoidance ability of the rats;the pathomorphology of the cerebral cortex and hippocampus of the rats were detected.Results:The Morris water maze test results showed that compared with model group,the latency to platform of the rats in low dose of TAOCO group was decreased on the 4th and 5th days(P<0.05);the latency and swimming distance to reach the platform of the rats in middle dose of TAOCO group were decreased on the 5th day(P<0.05),and the starting angle of the rats was reduced on the 3th day(P<0.05);the latencies to reach the platform of the rats in high dose of TAOCO group were decreased on the 2nd and 5th days(P<0.05),and the starting angle of the rats was decreased on the 6th day(P<0.01).Compared with model group,on the 7th day,the time of staying on platform,distance of staying on platform,time of staying on platform/total time,distance of staying on platform/total distance of the rats in different doses of TAOCO groups were all increased significantly(P<0.05) within 1.5 min.Compared with model group,the times of crossing platform and time of staying in effective area of the rats in low and high doses of TAOCO groups were significantly increased(P<0.05).The dark avoidance task results showed that compared with model group,the error latencies and the error times of the rats in different doses of TAOCO groups had no significant differences on the 2nd day(P>0.05).Compared with model group,there was no obvious improvement of the cerebral cortex and hippocampus injury of the rats in low and middle doses of TAOCO groups.In high dose of TAOCO group,the cerebral cortex and hippocampus injury of the rats were significantly improved.Conclusion:TAOCO can improve the learning and memory function of the AD rats and reduce the pathological injury of brain tissue of AD rats.

Objective In order know the clinical effects of vitamin B1 point injection combined with Chinese manipulation and Qi Gong therapy on the postoperative urinary retention after hemorrhoid operation. Methods Totally 150 patents with postoperative urinary retention after hemorrhoid operation were divided into the experimental group and the control group with 75 cases in each group randomly.The experimental group were treated with vitamin B1 injection at San Yin Jiao point by disposable ascepfic syringe,at the same time Chinese manipulation and Qi Gong therapy were used to masage the bladder in the lower abdomen.The tradi- tional nuusing cares,such as changes of body position,induction by bicker and foment by hot water bag,were used in the conutrol group.The improving conditions of postoperative urinary retention was compared between them.Results The total effective rate was 93%(44 cases with marked effect,26 cases with drect)in the cxperimental group and 53%(17 cases with marked effect,23 cases with effect)in the control group respectively,with a very significant difference between the two groups,X2=31.7,P＜0.01.The experimental group was significantly better than that of control group in the time of uresis after surgery,P＜0.01.Conclusions Vitamin B1 point injection combined with Chinese manipulation and Qi Gong therapy is an effective mursing measure to alleviate urinary retention after henmrrhoid operation.

To study the changes of metabolites in rat urine after treatment of Aristolochia fangchi decoction by metabonomic method.

Objective To explore the characteristics, diagnosis, treatment and prognosis of liver injury caused by the deficiency of dioscorea bulbifera L.. Methods The general data, clinical manifestation and laboratory examination of 45 cases of liver injury diagnosed as Yoshimoto associated liver injury from November 2014 to June 2017 were classified and reviewed with the standards of drug liver injury classification recommended by the Council of international medical organizations. Results The number of male patients was 26, and female 19. The medication time ranged from 1 week to 2 years and the main biochemical performance was abnormal, namely ALT, AST, TBil, DBil, ALP and GGT. Of the 45 cases, the average values of ALT, AST were 608.11 ± 411.30 U/L and 505.38 ± 342.15 U/L. The TBil of 42 case rised with the mean value 170.10 ± 136.86 μmol/L, and the ALP of 22 cases with 182.38 ± 55.15 U/L. The GGT of 43 cases rised with the mean 223.12 ± 131.85 U/L. Clinical classification included 38 cases were liver cell injury, none was cholestasis, 5 mixed types and 2 cases of liver biochemical examination abnormality. One patient died while the other patients recovered. Conclusions Although the pathogenesis of the liver cell induced injury type with dioscorea bulbifera L. remains unclear, the reasonable and appropriate use of medication and regular liver biochemical tests is necessary.

OBJECTIVETo study the effect of chromomycin A(2) in inducing apoptosis of HepG2 cells and explore the molecular mechanism.

METHODSHepG2, MCF-7, A549, and 7901 cells were exposed to chromomycin A(2) and the changes in the cell viability were detected using MTT assay. The changes in the chromatins were observed with laser scanning confocal microscope after incubation of the cells with chromomycin A(2) (60 nmol/L) for 24 h. The changes in cell morphology were examined with a phase-contrast microscope, and the apoptotic cell populations, fluorescent intensity of reactive oxygen species (ROS) and mitochondrial membrane potential were determined using flow cytometry.

RESULTSChromomycin A(2) significantly inhibited the proliferation of the cells in a time- and dose-dependent manner, and caused changes in the cell morphology and cell apoptosis. Exposure of the cells to chromomycin A(2) resulted in chromatin condensation, ROS generation, and reduction of the mitochondrial membrane potential.

CONCLUSIONIncreased ROS and mitochondria damage may importantly contribute to chromomycin A(2)-induced apoptosis in HepG2 cells.

Apoptosis ; drug effects ; Cell Survival ; Hep G2 Cells ; drug effects ; Humans ; Membrane Potential, Mitochondrial ; Mitochondria ; pathology ; Plicamycin ; analogs & derivatives ; pharmacology ; Reactive Oxygen Species ; metabolism

Objective To study the effect of PM2.5 combined with UVB treatment on human keratinocytes HaCaT. Methods The PM2.5 in the air was collected in Guangzhou and the metal ingredients were analyzed. The cells were divided into four groups:negative control group(NC group),simple PM2.5 treatment group with the concentration of IC50(PM2.5 group),simple UVB irradiation group with the dose of 30 mJ/cm2(UVB group)and PM2.5 combined with UVB treatment group(combined treatment group). The effects of different treatments on cell viability were measured by MTT assay and those of different treatments on apoptosis were detected by flow cytometry. The expressions of PARP and LC3 protein were detected by Western blot. Results The metal components in PM2.5 samples included Ca ,Zn ,Ba ,Al ,Cu ,Pb ,etc. After the treatment of PM2.5 on HaCaT cells ,we concluded that the IC50 was about 300 μg/mL. The inhibitory effect on cell viability after 24 h in different groups showed significant difference (P < 0.001) and the viability of the combined treatment group was the lowest (P < 0.001). Flow cytometry analysis showed that compared with that of NC group,the apoptosis rate of PM2.5 group(P < 0.01),UVB group(P < 0.01)and the combined treatment group(P < 0.01)increased,but the apoptosis rate in the combined treatment group was higher than that of PM2.5 group(P < 0.05),but lower than that in UVB group(P < 0.01). Western blot showed that the level of LC3-Ⅱ and PARP in another three groups was higher than that of NC group;PARP in the combined treatment group was lower than that in UVB group and LC3-Ⅱ increased compared with that in PM2.5 and UVB group. Conclusion PM2.5 can increase the harm of UVB on HaCaT cells and the main mechanism may be through increasing autophagy rather than apop-tosis.

Objective To explore the diagnostic efficiency of ultrasound-guided biopsy in the diagnosis of gastrointestinal lesions.Methods The study retrospectively analyzed 41 cases who underwent ultrasound-guided biopsy and diagnosis were confirmed as gastrointestinal lesions either by surgery resections or by biopsies in our hospital from January 2006 to April 2018.The detection rate and the safety in the diagnosis of gastrointestinal lesions by ultrasound-guided biopsy were evaluated and they were compared with clinical efficiency of the endoscopic biopsy.Results (1) Of the 41 cases underwent ultrasound-guided biopsies,38 cases were confirmed by pathology.A 92.7％ detection rate had achieved by ultrasound-guided biopsies.In the 38 cases,the diagnoses were grouped in benign and malignant,with 29 malignant and 9 benign.(2) Among the 13 cases examined by both of the ultrasound-guided biopsy and endoscopic biopsy,the diagnostic accuracy of ultrasound-guided biopsy was 84.6％ and 61.5％ with endoscopy.No significant difference (P =0.378) between the two modalities.(3) No complication occurred with both of methods.Conclusions Ultrasound-guided biopsy of gastrointestinal lesions is a safe and effective method.It would be an alternative solution to provide clinicians with reliable diagnosis,especially when endoscopic diagnosis is not inapplicable or failed.

OBJECTIVECombined the blood biochemical markers, the renal histopathological changes and the metabonomics profile were investigated to study the toxicity differences between Aristolochia fangchi and Stephania tetrandra.

METHODTen rats were randomly selected from 70 male Wistar rats as blank control group. The remaining 60 rats were divided into three groups. The two treated groups were orally administrated by 8.1 g x kg(-1) of A. fangchi and S. tetrandra respectively and the control group by equal volume of distilled water for 4weeks. Before the administrated and every 2 weeks, urine and plasma were collected and their 1H-NMR spectra were acquired, and then subjected to data process and PCA. Blood biochemical analysis and histopathological examination were carried out.

RESULTOn the 2nd weekend, the BUN of the two treated groups, the AST of A. fangchi group were all markedly higher than that of the control group (P < 0.05). Compared with the A. fangchi group, the SCr higher in the S. tetrandra group (P < 0.05). The kidney pathological changes were apparently in the two treated groups and the pathological changes in the liver apparently in the S. tetrandra group. Along with the lasting of administration to the 4th week, the BUN, ALT and AST of the two treated groups, the SCr of A. fangchi group were all significantly higher than that of the control group (P < 0.01). The renal and liver injuries in the two treated groups were all become more seriously. Comparing the A. fangchi group, the BUN, SCr and AST were all higher in the S. tetrandra group (P < 0.05). Compared with control group, the urinary concentrations of citrate, 2-oxo-glutarate, taurine, hippurate, TMAO, creatine and the plasma concentrations of 3-D-hydroxybutyrate, acetone, NAC, OAC, creatinine were all changed.

CONCLUSIONThe A. fangchi and S. tetrandra all can induce the renal and liver lesion and its seriousness is correspondent to the lasting of administration. The liver and kidney toxicity of S. tetrandra are all more serious than the A. fangchi.

Animals ; Aristolochia ; chemistry ; Blood Chemical Analysis ; Drug-Related Side Effects and Adverse Reactions ; Drugs, Chinese Herbal ; administration & dosage ; adverse effects ; metabolism ; Kidney ; chemistry ; drug effects ; metabolism ; pathology ; Liver ; chemistry ; drug effects ; metabolism ; pathology ; Male ; Metabolomics ; Random Allocation ; Rats ; Rats, Wistar ; Stephania tetrandra ; chemistry ; Urine ; chemistry

Objective To apply objective structured teaching evaluation (OSTE) in teaching competence assessment for general practice preceptors in community training bases.Methods The teaching competency was assessed with OSTE for 28 general practice preceptors in Fengxian District of Shanghai in December 2017.The application of OSTE was evaluated with questionnaire among preceptors,examiners and standardized students(SS).Results Among 28 preceptors there were 23 females (82.1％),with an average age of (37.3±4.2) years.The average teaching duration was (2.8±2.1) years.In the five OSTE station,the highest total score was (88.1 ±2.7) points in the first station self-presentation,while the lowest was (70.8± 14.5) points of the second part physical examination feedback of the third station ambulatory care teaching.The total score in the fifth station (doctor-patient communication teaching) of participants with＜ 15 years of community practice was higher than those ≥15 years of community practice [(80.1±8.5) vs.(71.6± 7.1),t=2.092,P=0.007].Except"being able to adapt to this form of evaluation",the proportions of choosing "very good"were all more than 50％ in other 4 aspects.The overall willingness of "recommending OSTE as the main method to evaluate the teaching competence of GP trainers" was higher in examiners and SS than that inpreceptors (Z=2.836,P=0.005).Conclusion The innovative approach of OSTE has been widely recognized,but the professional capability,the cognition of general practice,the teaching competence and the willingness to use OSTE need to be strengthened for general practice receptors in community bases.

The effects of berberine on the expression of hepatocyte nuclear factor-4α (HNF-4α) in liver of rats with fructose-induced insulin resistance and the molecular mechanism of berberine preventing insulin resistance were investigated. The experimental animals were divided into two groups of 16 animals each. The control group received a control routine diet containing 60% carbohydrate, and the study group a high-fructose diet containing 60% fructose as the sole source of carbohydrate. At the end of 6 weeks these were each subdivided into two groups. One was administered with berberine [187.5mg/(kg·d) in 5g/L carboxymethyl cellulosel] by intragastric intubation and the other group was treated with a vehicle (5g/L carboxymethyl cellulose). The rats were fed on the same dietary regimen for the next 4 weeks. After the experimental period of 10 weeks, plasma glucose, insulin and triglyceride levels were measured. HOMA insulin resistance index (HOMA-IR) was assayed. Immunohistochemistry, semiquantitative RT-PCR and western blot were used to detect the expression of HNF-4α in liver. Compared with control diet, fructose feeding induced hyperinsulinemia, HOMA-IR and increased triglyceride (all P<0.01). Berberine prevented the rise in plasma insulin (P<0.01), HOMA-IR (P<0.01) and triglyceride (P<0.05) in the fructose-fed rats. No change in plasma glucose was seen among these groups. The mRNA and protein expression of HNF-4α was decreased in the fructose-fed rats, but berberine could promote its expression. It was concluded that berberine could prevent fructose-induced insulin resistance in rats possibly by promoting the expression HNF-4α in liver.