Construction of medical instrument experimental training platform and exploration of teaching for biomedical engineering specialties in military colleges and universities / 医疗卫生装备

The problems existing in the teaching mode of the traditional medical instrument practice course were introduced,and a medical instrument experimental training platform was constructed based on the maintenance demonstrators for monitor and ultrasound machine.Teaching reform was carried out with the developed training platform,and the teaching efficacy was analyzed deeply.References were provided for the improvement of the medical instrument practice course in the biomedical engineering specialties of military colleges and universities.[Chinese Medical Equipment Journal,2023,44(9):92-95]

Prediction method for weaning outcomes based on machine learning and electrical impedance tomography / 医疗卫生装备

Objective To propose a method for predicting weaning outcomes based on machine learning and electrical impedance tomography(EIT).Methods Firstly,EIT image features were extracted from a total of 84 samples from 30 patients,and the important features screened with the extreme gradient boosting(XGBoost)algorithm were used as inputs to the model.Secondly,the prediction model was built with six machine learning methods,namely random forest(RF),support vector machines(SVM),XGBoost,gradient boosting decision tree(GBDT),logistic regression(LR)and decision tree(tree).Then the prediction model had its prediction performance evaluated by AUC,accuracy,sensitivity and specificity under imbalanced dataset,over-sampling balanced dataset and random under-sampling balanced dataset.Results In terms of AUC,accuracy and specificity,the model under the over-sampling balanced dataset and the random under-sampling balanced dataset behaved better than that under the imbalanced dataset(P＜0.05);in terms of sensitivity,the difference in model performance between the over-sampling balanced dataset and the imbalanced dataset was not statistically significant(P＞0.05),and the model performance under the random under-sampling balanced dataset decreased when compared with that under the imbalanced dataset(P＜0.05).There were no significant differences between the model performance under the over-sampling balanced dataset and that under the random under-sampling balanced dataset(P＞0.05).The model based on XGBoost behaved the best under the over-sampling balanced dataset,with an AUC of 0.769,an accuracy of 0.808,a sensitivity of 0.938 and a specificity of 0.600.Conclusion The method based on machine learning and EIT predicts weaning outcomes of patients with prolonged mechanical ventilation,and thus can be used for auxiliary decision support for clinicians to determine the appropriate timing of weaning.[Chinese Medical Equipment Journal,2023,44(10):1-6]

PARP1 promotes proliferation and 5-FU resistance of gastric cancer AGS cells by regulating N-glycosyltransferase FUT8 / 中国肿瘤生物治疗杂志

@#[Abstract] Objective: To investigate the effect of polyadenosine diphosphate ribose polymerase 1 (PARP1) on the proliferation and 5-FU resistance of gastric cancer cells and its potential mechanism. Methods: The tumor tissues and corresponding paracancerous tissues of 72 patients with gastric cancer who were treated in Central Hospital of Enshi Tujia and Miao Autonomous Prefecture from May 2018 to December 2019 were collected. AGS cells were transfected with siFUT8 to knock down FUT8 gene expression. qPCR and immunohistochemistry were used to detect the expression of PARP1 in gastric cancer and adjacent tissues. CCK-8, flow cytometry, and colony formation assay were employed to detect the effects of AG14361 on the proliferation, apoptosis and colony formation of AGS cells. MTT assay was used to detect the effect of AG14361 on the 5-FU sensitivity of gastric cancer cells. The overall distribution of differential genes in AGS cells treated with AG14361 was analyzed by mRNA sequencing, and related signaling pathways were analyzed by KEGG enrichment. qPCR and WB were used to detect the expression of α-1,6-fucosyltransferase (FUT8) in AGS cells and the interference effect of FUT8. CCK-8, flow cytometry, and colony formation assay were employed to detect the effects of AG14361 on the proliferation, apoptosis, and colony formation of AGS cells disturbed by siFUT8. Results: Compared with paracancer tissues, PARP1 expression was significantly increased in gastric cancer tissues (P<0.001). AG14361 can significantly inhibit the proliferation and colony formation of AGS cells, thus promoting the apoptosis of AGS cells (all P<0.01). AG14361 treatment reduced the IC50 of 5-FU against gastric cancer cells, especially against AGS cells, with IC50 decreased by more than 60%. mRNA sequencing results showed that FUT8 was a key glycosyltransferase of AG14361 in inhibiting the proliferation of AGS cells (P<0.05). Compared with the siNC group, treatment of AG14361 with IC50 significantly reversed the promotion of AGS cells proliferation caused by inerference with FUT8, promoted apoptosis and BAX protein expression, decreased Bcl2 protein expression and inhibited the increase in AGS cell colony formation caused by interference with FUT8 (all P<0.01). Conclusion: PARP1 can promote malignant transformation of gastric cancer cells by regulating N-glycosyltransferase FUT8. AG14361 can enhance the chemotherapy sensitivity of 5-FU, and PARP1 may become a potential target for gastric cancer treatment.

Discussion on the essential thought of Ma's warm moxibustion technique for "unblocking fu-organs" / 中国针灸

"Unblocking fu organs" is one of the essential principles of Ma's warm moxibustion technique, characterized as "dredging" and "harmonizing" for either deficiency or excess condition. Under the guidance of this therapeutic thought, the acupoints for moxibustion are mainly selected from the middle and lower parts of the body. Regarding the therapeutic approach, the acupoint prescription for moxibustion should be formed in line with warming and promoting circulation of fu organs; the moxibustion degree should be specially considered, in which, the mild moxibustion is recommended to induce promoting action; and the systematic moxibustion technique should be the root for dredging fu organs and regulating zang organs. Ma's mild moxibustion technique stresses on removing the obstruction of fu organs and emphasizes promoting the qi activity of sanjiao (triple energizer) and regulating the balance of five zang organs.

Mechanisms of catapol inhibiting differentiation and glycolysis of Thl7 cells through MiR-143-3p / 中国药理学通报

Aim To investigate the mechanism of eata- pol (CAT) inhibiting differentiation and glyeolysis of Thl7 eel Is through miR-143-3p.Method The peripheral hloorl CD4 ∗ T eells of HA patients were obtained to deteet the expression of miR-143-3p and the mRNA levels of key glycolytic enzymes, ineluding glucose transporter 1 ( Glutl ) , hexokinase 2 ( HK2 ) , pyruvate kinase 2 (PKM2) , laetate dehydrogenase A ( LDHA).The differentiation of Thl7 eells was induced in vitro, and the ShRNA/lentivirus was applied to achieve the overexpression or knockdown of miR- 143-3 p.Un-transfected eells were divided into control group and CAT group (20, 40, 80 mg • L 1 ) , and transfected eells were divided into four groups: negative control group, miR-143-3p inhibitor group, miR- 143-3p mimies group, miR-143-3p inhibitor + CAT group.The percentage of Thl7 eells was deteeted by flow cytometry, and the level of IL-17A was detected by EL1SA.Quantitative real-time PCR was used to detect the mRNA expression of miR-143-3p and key glycolytic enzymes, and the levels of pyruvate and lactate were also detected.Results The mRNA expression of miR-143-3p in RA peripheral blood CD4 ∗ T cells was negatively correlated with disease severity ( DAS28 ) , transcription factor ROR-yt, and the key glycolytic enzymes Glutl/HK2/LDHA.Compared with negative control group, the down-expression of miR-143-3p markedly elevated the mRNA expression of ROR-yt, Glutl, HK2, LDHA, and the levels of IL-17A, pyruvate, lactate.Catalpol groups significantly up-regula- ted the expression of miR-143-3p, decreased the mRNA expression of HK2/LDHA and the levels of pvru- vate/lactate, and inhibited Thl7 cells differentiation.Compared with miR - 1 4 3 - 3 p inhibitor group , catapol could significantly inhibit the abnormal up-regulated of HK2/LDHA mRNA relative expression, pyruvate/lactate levels and the abnormal differentiation of Thl7 eells.Conclusion MiR-143-3p inhibits the differentiation and glycolysis of Thl7 cells.Catalpol could sup-press the glycolysis and differentiation of Thl7 eells by regulating mill-143-3p.

Catalpol inhibits cell apoptosis through alleviating endoplasmic reticulum stress in nonalcoholic fatty liver disease / 药学学报

This study was designed to explore the protective effect and underlying mechanism of catalpol on hepatocyte apoptosis in nonalcoholic fatty liver disease (NAFLD). High fat diet (HFD) was used to establish NAFLD model in the in vivo experiment, and the procedures of the experiments and animal care protocol were approved by the Animal Care and Use Committee of Jianghan University. Human liver cancer cell line HepG2 was treated with palmitate (PA) to establish a lipid toxicity model in the in vitro experiments. The results showed that catalpol significantly decreased the contents of serum total glyceride (TG), total cholesterol (TC), alanine aminotransferase (ALT), and aspartate transaminase (AST) in HFD-fed mice. Results of TUNEL staining and flow cytometry analyses revealed that catalpol significantly inhibited hepatocytes apoptosis in HFD-fed mice and PA-treated HepG2 cells. Moreover, catalpol treatment significantly reduced the endoplasmic reticulum stress-related protein expression levels of binding immunoglobulin protein (BiP), phosphorylated PKR-like endoplasmic reticulum kinase (p-PERK), inositol-requiring kinase 1α (IRE1α), and transcriptional factor activating transcription factor 6 (ATF6), and apoptosis-related protein expression levels of C/EBP homology protein (CHOP), phosphorylated c-Jun N-terminal kinase (p-JNK), and cleaved cysteinyl aspartate specific proteinases (caspases)-12, -9, and -3 in HFD-fed mice and PA-treated HepG2 cells. Furthermore, endoplasmic reticulum stress agonist tunicamycin (TM) significantly reversed the inhibitory effect of catalpol on protein expression levels of BiP, p-PERK, IRE1α, and ATF6, subsequently the inhibitory effect of catalpol on expression levels of CHOP, p-JNK, Bcl-2, Bax, and cleaved caspases (-12, -9, and -3) was also attenuated in PA-treated HepG2 cells. Taken together, these findings demonstrated that catalpol could inhibit hepatocytes apoptosis and had a significant protective effect on liver injury, and its mechanism might be related to the relief of endoplasmic reticulum stress.

Study on potential effective components and mechanism of Zhishe Tongluo Capsules in treatment of ischemic stroke / 中国中药杂志

To explore the potential effective components and mechanism of Zhishe Tongluo Capsules in the treatment of ischemic stroke via network pharmacology, molecular docking and cellular experiment. The chemical constituents of Zhishe Tongluo Capsules were found by TCMSP, BATMAN-TCM and literatures. The constituents-target network was predicted by BATMAN-TCM database. Key words such as cerebral stroke, ischemic stroke and cerebral ischemic stroke were used to search ischemic stroke related targets, and then Venny Map was constructed based on the targets of traditional Chinese medicine and the targets of ischemic stroke. The overlapping targets were imported into STRING database to establish the interaction network. Furthermore, the core targets were screened out by Cytoscape software. Go and KEGG enrichment analysis were performed through DVIAD database. The results showed a total of 193 potential chemical constituents, 985 drug targets and 6 035 disease targets. There were 631 potential targets, 44 core targets and 55 potential active components for treating ischemic stroke through Venny mapping. GO enrichment analysis mainly involved response to hypoxia and positive regulation of ERK1/ERK2. KEGG pathway enrichment analysis mainly involved cholinergic synapse, cAMP signaling pathway, and calcium signaling pathway. Molecular docking data revealed that TP53, EGFR, IL6, INS, TNF and SRC had a good capability to bind with their corresponding active components. To ensure the protective effect Zhishe Tongluo Capsules on the inflammation reaction, an in vitro model of lipopolysaccharide(LPS)-induced RAW264.7 cells was built. The contents of IL-1α, IL-1β, IL-6 and TNF-α in the supernatant were significantly decreased by enzyme linked immunosorbent assay(ELISA). The findings suggested that Zhishe Tongluo Capsules could prevent the injury of ischemic stroke by inhibiting the inflammation.

A novel flavanone from Thymus przewalskii / 中国中药杂志

This study was to investigate the chemical constituents from the aerial parts of Thymus przewalskii. The chemical consti-tuents were separated and purified by column chromatography on silica gel, ODS, Sephadex LH-20 and semi-prepared HPLC, and their structures were determined by physicochemical properties and spectroscopic data. Four flavanones were isolated from the ethanol extract of the aerial parts of T. przewalskii, and identified as(2S)-5,6-dihydroxy-7,8,4'-trimethoxyflavanone(1), 5,4'-dihydroxy-6,7-dimethoxyflavanone(2),(2S)-5,4'-dihydroxy-7,8-dimethoxyflavanone(3), sakuranetin(4), respectively. Compound 1 was a new compound and its configuration was determined by CD spectrum, compound 3 was natural product which was isolated for the first time and their configurations were determined by CD spectra. Compound 2 was isolated from the genus Thymus for the first time and compound 4 was isolated from T. przewalskii for the first time. Furthermore, cytotoxicity test was assayed for the four flavanones. They exhibited weak cytotoxicity against human lung cancer cells(A549), with the IC_(50) from 74.5 to 135.6 μmol·L~(-1).

Study on correlation between property of coronary artery lesion and degree of coronary artery stenosis of elderly patients with coronary heart disease

Objective: To discuss the influence of coronary artery lesion of elderly patients with coronary heart disease [CHD] on left ventricular remodeling

Methods: Retrospective selection method was used to choose 80 elderly CHD patients who received coronary angiogram examination in Baoding First Central Hospital from January 2014 to February 2018 as the objects of study. According to coronary artery lesion, the patients were classified into single vessel lesion group [single vessel group] and multi-vessel lesion group [multi-vessel group, the number of lesion vessels >/=2]. Single vessel group included 60 patients, and multi-vessel group includes 20 patients. Intravascular unltrasound was applied to record coronary plaque property of all patients and transthoracic echocardiography was used to record left ventricular remodeling. Later correlation analysis was carried out

Results: The proportion of calcified plaque and mixed plaque was higher than that of single vessel group, and the differences had statistical significance [P<0.05]. Left ventricular end diastolic volume [LVEDV] and left ventricular end-systolic volume [LVESV] of multi-vessel group were higher than that of single vessel group, while left ventricular ejection fraction [LVEF] was lower than that of single vessel group. The differences had statistical significance [P<0.05]. Linear correlation analysis showed coronary artery lesion was positively correlated with LVEF and calcified plaque [r=0.287, 0.371, P<0.05]. Multiple linear regression analysis showed LVEF, calcified plaque and LDL-C were independent risk factors of multi-vessel coronary artery lesion of old CHD patients [P<0.05]

Conclusion: The number of coronary artery lesions is significantly correlated with left ventricular remodeling, and can increase the proportion of calcified plaque and mixed plaque, thus leading to left ventricular remodeling abnormity

Clinical Efficacy of Modified Da Chengqitang by Enema on Treatment if Postoperative Inflammatory Intestinal Obstruction / 中国实验方剂学杂志

Objective: To discuss the clinical efficacy of modified Da Chengqitang by enema in treatment of postoperative inflammatory intestinal obstruction (EPISBO) after the operation and its effect on inflammatory factors, gastrointestinal motility and intestinal barrier function. Method: One hundred and six patients were randomly divided into control group (52 cases) and observation group (54 cases) by random number table. Patients in both groups were given fasting for solids and liquids, gastrointestinal decompression, maintaining water and electrolyte balance, nutritional support and other basic therapies. Patients in control group were given somatostatin for injection for continuous micro-pumping, 0.003 5 mg·h-1·kg-1, dexamethasone acetate tablets, 2.5-5 mg/time, 2 time/days. Patients with concurrent infection got ceftazidime for injection, 30-100 mg·kg-1, 2-3 intravenous drips. In addition to the therapy of control group, patients in observation group were also given modified Da Chengqitang, 125 mL/time, 2 times/days. A course of treatment was 5 days. Time of remission of abdominal distention, recovery of exhaust gas, bowel sounds and diet, defecation, hospitalization and transitional surgery were recorded. And main gastrointestinal symptoms and signs were scored. And levels of serum interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), high-sensitivity C-reactive protein (hs-CRP), vasoactive intestinal peptide (VIP), gastrin, motilin, diamine oxidase and D lactic acid were detected. Result: After treatment, according to rank sum test analysis, the clinical efficacy in observation group was better than that in control group (PPPPα, hs-CRP, VIP, DAO, D-lactic acid and scores of main gastrointestinal symptoms and signs were all lower than those in control group (PPConclusion: In addition of routine therapy of western medicine, modified Dachengqi Tang had effects in resisting inflammation, regulating gastrointestinal hormones, and protecting intestinal barrier function, so can improve gastrointestinal motility, alleviate symptoms, shorten the course of disease and improve the clinical efficacy.

Investigation of Decoction Process of Digda-4 Decoction / 中国实验方剂学杂志

Objective:To optimize the decoction process of Digda-4 decoction(DGD-4D), and provide reference for the standardization study of decoction of Mongolian medicine decoction. Method:Taking DGD-4D as model drug, different decoction methods of Mongolian medicine were compared, HPLC was used to determine contents of aesculetin, geniposide, picroside Ⅰ and picroside Ⅱ.On the basis of single factor tests, central composite design-response surface methodology was adopted to optimize the decoction process of DGD-4D with transfer rates of 4 components and dry extract rate as indexes, regression model fitting was carried out by Design-Expert 8.0.6 software, prediction model of process parameters was established, and the optimal process was verified. Result:The optimal decoction condition of DGD-4D was determined to be adding 40 times the amount of water and decocting for 17 min, decocting once.Transfer rates of aesculetin, geniposide, picroside Ⅰ, picroside Ⅱ and dry extract rate were 70.01%, 94.11%, 61.23%, 92.32%, 32.89%, respectively. Conclusion:The optimum decoction process of DGD-4D is established, it has important reference significance for excavating, sorting, improving the level of Mongolian medicine preparations and ensuring the consistency of their clinical efficacy.

Research on extraction process of Digeda-4 flavored decoction based on QbD concept / 中国中药杂志

To establish and validate the design space of the Digeda-4 flavored decoction( DGD-4D) extraction process by using the quality by design( Qb D) concept. With DGD-4D decoction pieces as a model drug,with the transfer rate of aesculin,picroside I,picroside Ⅱ,geniposide and the yield of extract as critical quality attributes( CQAs),the single factor experiment design was used to determine the level of each factor; the Plackett-Burman experiment design was used to select the critical process parameters( CPPs);and the Box-Behnken experiment design was used to optimize the extraction process. The design space of the DGD-4D extraction process was established,and finally,four experimental points were selected to verify the established model. The single factor experiment determined the levels of each factor,including soaking time 60 min and 30 min,water adding volume 12 times and 8 times,extraction time 90 min and 30 min,number of extraction times 3 times and 1 time,as well as extraction temperature 100 ℃ and 90 ℃.By Plackett-Burman experimental design,the DGD-4D water addition,extraction time and number of extraction times were determined to be CPPs. The Box-Behnken experimental variance analysis showed that P of the regression model was less than 0. 01 and the misstated value was more than 0. 01,indicating that the model had good predictive ability,and the operation space of CPPs in the DGD-4D extraction process was determined as follows: the amount of water addition was 10-12 times; extraction time 50-80 min; and number of extraction times was 3 times. The design space of DGD-4D extraction process based on the concept of Qb D is conducive to improving the stability of product quality and laying a foundation for the future development of DGD-4D.

Intervention of Catalpol on High-fat Diet Induced Nonalcoholic Fatty Liver Disease in Mice / 中国医学科学院学报

To investigate the effect of catalpol on high-fat diet(HFD)-induced nonalcoholic fatty liver disease(NAFLD)and its underlying molecular mechanisms. Sixty C57BL/6J male mice were randomly divided into six groups:control group;HFD group;HFD+catalpol(100 mg/kg)group;HFD+catalpol(200 mg/kg)group;HFD+catalpol(400 mg/kg)group;and HFD+atorvastatin calcium(ATC)(30 mg/kg)group.The control group was fed a normal diet containing 4.4 kJ/g fat,whereas the other five groups were fed a high-fat diet containing 19.8 kJ/g fat.Mice in the catalpol or ATC treatment groups were administered by gavage for different doses of catalpol or ATC,whereas other mice were treated with saline.Body weight was measured once a week.Experiments were terminated after 18 weeks,and blood and liver samples were collected after an overnight fast(12 hours)for analysis.The body weight and liver weight were measured and the levels of serum total cholesterol(TC),triglyceride(TG),high-density lipoprotein cholesterol(HDL-C),low-density lipoprotein cholesterol(LDL-C),alanine aminotransferase(ALT),and aspartate transaminase(AST)as well as inflammatory factors tumor necrosis factor-α(TNF-α),interleukin(IL)-1β,and IL-6 were determined by commercially available kits.Liver sections were stained with Oil Red O and HE to investigate the lipid accumulation and histopathological changes.The protein expressions of nuclear factor kappa-B(NF-κB)p65,inhibitor of nuclear factor kappa-B α(IκBα),B-cell lymphoma-2(Bcl-2),Bcl-2 associated x protein(Bax),and Caspase-3 were determined by Western blot. Compared to the model group,the body weight gains(all =0.001),liver index(=0.008,=0.001,=0.001),ALT(=0.004,=0.001,=0.001),and AST(=0.008,=0.001,=0.001)were significantly decreased in catalpol treatment groups,and the serum levels of TC(=0.005,=0.001),TG (all =0.001),and LDL-C(all =0.001)were also significantly decreased in middle and high dose groups,and the serum level of HDL-C was significantly increased in high group(=0.009).Moreover,compared to the model group,the degree of liver injury and lipid accumulation were obviously decreased in the catalpol treatment groups according to the pathology.Similarly,the release of inflammatory factors was significantly inhibited by the treatment with catalpol.The results of Western blot showed that the protein levels of NF-κB p65(=0.014,=0.001,=0.001)and Caspase-3(all =0.001)in the livers of HFD-fed mice were significantly reduced by catalpol treatment.In addition,the protein level of IκBα(=0.028,=0.001,=0.001)and the ratio of Bcl-2/Bax in high dose group(=0.003)was increased by treatment with catalpol. Catalpol can effectively improve the body weight gains,liver index,dyslipidemia,and lipid accumulation in HFD-fed mice and inhibit the release of inflammatory factors and hepatocyte apoptosis,thereby preventing the development of NAFLD induced by HFD.

Influence of elderly patients' coronary artery lesion severity on cardiac remodeling and left ventricular function

Objective: To analyze the correlation between coronary artery lesion and cardiac function change among elderly patients with coronary heart disease [CHD]

Methods: A total of 171 elderly patients with CHD hospitalized from 2009 to 2016 were selected. Their ultrasonic cardiographic and coronary angiographic data were collected, and the correlation between coronary artery lesion and left ventricular remodeling, systolic and diastolic function was analyzed

Results: Coronary artery lesion among elderly patients with CHD was closely related with left ventricular remodeling and systolic function change, but not significantly correlated with diastolic function change

Conclusion: Coronary artery lesion severity of elderly patients with CHD was an important reason for left ventricular remodeling and cardiac systolic function change. Early intervention of coronary artery disease is of great significance to protect the heart function

The detection and data analysis of delivered energy of cardiac defibrillator / 中国医学装备

Objective:To adopt defibrillation analyzer to detect performance of delivered energy of cardiac defibrillator and to reveal its relevant changing regular, and carry out scientific verification so as to take the detection data to play a role in the maintenance work of equipment.Methods: According to National Metrological technical specification "JJF 1149-2014 Calibration Specification for Cardiac Defibrillators", the FLUKE IMPULSE 7000DP Defibrillator Analyzer was applied to obtain data, and then a comprehensive analysis method with graphs and table was used to analyze these test data.Results: Through analyzed the detection data of delivered energy to grasp the whole performance situation of using equipment and to enhance the cognition of technique and application level for Defibrillator Analyzer.Conclusion: Through analyzes data to find out the changing regular of delivered energy and the difference phenomenon of detection data distribution, and to elaborate the reason of phenomenon or influence factor. Through detects performance to screen out the poorest equipment of delivered energy so as to avoid medical risk that comes from hidden danger of equipment performance in the process of clinical therapy.

Systematic Review on Effects of Acupuncture Combined with Lifestyle Modification on Essential Hypertension / 中国中医药信息杂志

Objective To evaluate the effects of acupuncture combined with lifestyle modification for essential hypertension by Meta-analysis. Methods Clinical randomized controlled trial literature about acupuncture combined with lifestyle modification for essential hypertension in CNKI, WanFang Data, CBM, VIP, PubMed, Embase, and Web of Science since establishment to February 20, 2017 were retrieved. Data extraction and quality assessment of studies were conducted by two researchers independently, and the Meta-analysis was performed by the software of RevMan5.3. Results 5 articles involving 467 patients were included. The results of Meta-analysis showed that acupuncture combined with lifestyle modification had more significant effect than lifestyle modification alone in lowing SBP [SMD=-1.52(-2.40,-0.64)], in lowing DBP [SMD=-1.02(-2.01,-0.03)], total effective rates [RR=1.27(1.13, 1.43)]. Conclusion Compared with lifestyle modification alone, acupuncture combined with lifestyle modification have significant effects for patients with essential hypertension, but because of the fewer studies included, bigger heterogeneity between studies and the lower quality of included studies still exist, the results should be further verified, and clinical applications should be treated with caution.

Fingerprinting and multi-indicator quantitative analysis of Mongolian drug Digeda-4 decoction / 中国中药杂志

To establish the high performance liquid chromatography (HPLC) fingerprint for Digeda-4 decoction (DGD-4D), determine the contents of aesculetin, geniposide, picroside Ⅰ, picroside Ⅱ and ellagicacid in DGD-4D, and provide the scientific foundation for quality control of DGD-4D. The analysis was performed on Diamonsil(2) C₁₈ (4.6 mm×250 mm,5 μm) column, with methanol-0.1% phosphoric acid aqueous solution as mobile phase for gradient elution. The flow rate was 1.0 mL·min⁻¹; injection size was 10 μL; temperature was maintained at 30 °C, and the detection wavelength was set at 254 nm. The common mode of DGD-4D HPLC fingerprint was established, and the hidden information was analyzed by Chemometrics. Chromatographic peaks for DGD-4D were identified by HPLC and quantitative analysis was conducted for characteristic peaks. There were 17 common peaks in the fingerprints and the similarity of the fingerprints was over 0.9 in all 15 batches. The samples were broadly divided into four kinds by principal component analysis and clustering analysis. Four marker compounds were verified by partial least squares discriminant analysis, and No. 9, 12 and 14 peaks were identified as geniposide, picroside Ⅱ, and picroside Ⅰ respectively. The average recoveries were in the range of 95.91%-97.31%. The HPLC fingerprint method for content determination is reliable, accurate, rapid, simple, and reproducible, and can be used as one of the effective methods to control the quality of DGD-4D.

Study on the Quality Standard for Mongolian Medicine Yishen Powder / 中国药房

OBJECTIVE:To establish the quality standard for Mongolian medicine Yishen powder. METHODS:TLC was used for the qualitative identification of Rheum palmatum and Terminalia chebula in the preparation;HPLC was used for the contents de-termination of aloe emodin,rhein,emodin,chrysophanol and physcion:the column was Inertsil C18 with mobile phase of metha-nol-0.1% phosphoric acid(gradient elution)at a flow rate of 1.0 mL/min,detection wavelength was 254 nm,column temperature was 35 ℃ and the injection volume was 10 μL. RESULTS:The TLC pots of R. palmatum and T. chebula were clear and well-sepa-rated,negative control without interference. The linear range was 23.55-117.75 ng for aloe emodin(r=0.9999),44.72-223.62 ng for rhein(r=0.9998),43.18-215.90 ng for emodin(r=0.9997),77.41-387.12 ng for chrysophanol(r=0.9999)and 46.02-230.10 ng for physcion (r=0.9997);RSDs of precision,stability and reproducibility tests were lower than 2.0%;recoveries were 95.80%-99.66%(RSD=1.21%,n=6),95.01%-98.07%(RSD=0.92%,n=6),95.06%-97.84%(RSD=0.5%,n=6),95.19%-97.66%(RSD=1.07%,n=6)and 95.07%-98.20%(RSD=0.95%,n=6). CONCLUSIONS:The established standard can be used for the quality control of Mongolian medicine Yishen powder.

Correlation of clinicopathologic features and postoperative recurrence or metastasis in solid-pseudopapillary neoplasms of the pancreas / 临床与实验病理学杂志

Purpose To explore the correlation between the clinicopathological features and postoperative recurrence or metastasis of solid-pseudopapillary neoplasms of the pancreas (SPN).Method The clinicopathological characteristics of 73 SPNs were summarized,the patients' prognosis were followed up by telephone and then the correlation of clinicopathological characteristics and recurrence or metastasis was analyzed.Results 57 female patients and 16 male patients were included in this study.The age range was 7 to 68 years old with the average of 28 and median age of 27.The mean diameter of the tumors was 6.47 cm (range 0.31～ 14 cm).30 cases of tumors were located in the head of pancreas,9 in the body of pancreas,and 33 in the tail of pancreas.One case was a multiple lesion simultaneously located in the body and the tail.All patients were followed up by telephone for mean time 34.8 months with the range of 12 ～ 99 months.Necrosis,calcification,cholesterol crystal,foamy histiocytes,nuclear atypia,pancreatic parenchymal invasion,and perineural invasion had no statistical significance between non-recurrent/metastatic group and recurrent/metastatic group.However,there was significant difference for extra-pancreatic invasion,angiovascular invasion and Ki-67 proliferation index between non-recurrent/metastatic group and recurrent /metastatic group.Conclusion Extra-pancreatic invasion,angiovascular invasion and Ki-67 proliferation index ≥ 4％ have reference significance for predicting recurrence or metastasis of SPN.

Effect of Ginsenoside Rg2 and Its Stereoisomers on Oxygen-Glucose Deprivation and Reperfusion Induced Cortical Neuronal Injury Model / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To observe the effect of natural type ginsenoside Rg2 (Rg2) and its stereoisomers [20 (R)-Rg2 and 20 (S)-Rg2] at different concentrations on oxygen-glucose deprivation/ reperfusion (OGD/R) induced cortical neuronal injury model in vitro, and to explore the mechanism, and compare their differences of action.</p><p><b>METHODS</b>Cortical neurons after 7-day culture were randomly divided into 5 groups, i.e., the control group, the model group, the Rg2 group, 20 (R) -Rg2 group, and 20 (S) - Rg2 group. Cortical neurons in the Rg2 group, 20 (R)-Rg2 group, and 20(S)-Rg2 group were pretreated with 20, 40, and 80 μmol/L Rg2, 20 (R) -Rg2, and 20 (S) -Rg2 for 24 h to prepare OGD/R model. The cell survival rate, the activity of Caspase-3, the intracellular Ca2+ concentration, contents of superoxide dismutase (SOD) and malondialdehyde (MDA) were detected 24 h later.</p><p><b>RESULTS</b>Compared with the control group, cell survival rates and activities of SOD obviously decreased, the activity of Caspase-3, Ca2+ fluorescent optical gray value, and contents of MDA significantly increased with statistical difference (P < 0.05). Compared with the model group, cell survival rates and activities of SOD obviously increased, the activity of Caspase-3, Ca2+ fluorescent optical gray value, and contents of MDA significantly decreased in 20 μmol/L Rg2 group, 40 μmol/L 20 (R) -Rg2 group, and 80 μmol/L 20 (S) -Rg2 group (P < 0.05). Compared with 20(S)-Rg2 group, cell survival rates increased and contents of MDA significantly decreased in 20, 40, and 80 μmol/L Rg2 and 20 (R)-Rg2 groups (P < 0.05). The activity of Caspase-3 decreased and contents of SOD increased in 80 μmol/L 20 (R)-Rg2 group, and 40, 80 μmol/L Rg2 groups (P < 0.05). Ca2+ fluorescent optical gray value decreased in 40, 80 μmol/L Rg2 and 20 (R)-Rg2 groups (P < 0.05). Compared with 20 (R)-Rg2 group, Ca2+ fluorescent optical gray value decreased in 80 μmol/L Rg2 group (P < 0.05); contents of SOD increased in 40 and 80 μmol/L Rg2 groups (P < 0.05); contents of MDA decreased in 20, 40, and 80 μmol/L Rg2 groups (P < 0.05).</p><p><b>CONCLUSIONS</b>Rg2 and its stereoisomers could improve cell vitality of cortical neurons against OGD/R induced injury. This might be related to improving anti-apoptotic capacities and antioxidant abilities, and reducing Ca2+ inflow. Besides, the neuroprotective effect of 20 (R) -Rg2 was better than that of 20 (S) -Rg2, but inferior to that of Rg2.</p>