Evaluation methods and application progress of drug cytotoxicity in vitro / 中国基层医药

Drugs have both therapeutic and toxic side effects. How to quickly determine the toxicity of the test substance is very important for drug development. In vitro cytotoxicity testing compensates for the shortcomings of using animal models for toxicity evaluation. Its role in toxicity evaluation is increasingly important. The development of computer technology and in-depth research in proteomics, genomics, and metabolomics provide a method for in vitro cytotoxicity evaluation towards a faster and more accurate direction. This paper reviews the commonly used cells, evaluation indicators, and detection techniques for in vitro cytotoxicity evaluation, in order to provide some reference for related research.

Effect of Qiteng Xiaozhuo granule mediating miR-339-5p on inflammatory indexes in rats with chronic glomerulonephritis / 中国临床药理学与治疗学

AIM: To investigate the effect of Qiteng Xiaozhuo granule on inflammation indexes in rats with chronic glomerulonephritis (CGN) through miR-339-5p. METHODS: CGN model was established by adriamycin (ADR) injection into tail vein of rats. Qiteng Xiaozhu granules (21.6, 10.8, 5.4 g/kg) of different doses were intragastric-fed for 30 days. Pathological changes in kidney tissues of CGN rats were observed by HE staining and electron microscopy. The contents of IL-1β, IL-6, IL-10 and TNF-α in serum and kidney tissue of CGN rats were detected by qRT-PCR, ELISA and Western blot. Relative expressions of miR-339-5p, Syk and p-Syk proteins were detected by Western blot, the relative expressions of miR-339-5p mRNA and Syk mRNA were detected by qRT-PCR. RESULTS: There were thickening of basement membrane and glomerular atrophy in the model group. Compared with the normal group, the expression of miR-339-5p and IL-10 in the model group was significantly down-regulated, while the expression of IL-1β, IL-6, TNF-α and Syk was significantly up-regulated. Qiteng Xiaozhuo granule group could significantly reduce the protein and mRNA expression levels of IL-1β, IL-6, TNF-α, Syk in kidney tissue.CONCLUSION: Qiteng Xiaozhuo granule may down-regulate the expression of inflammatory factors through miR-339-5p in the treatment of inflammatory symptoms in CGN rats.

miR-324-5p inhibits lipopolysaccharide-induced proliferation of rat glomerular mesangial cells by regulating the Syk/Ras/c-fos pathway / 南方医科大学学报

OBJECTIVE@#To investigate the effect of miR-324-5p on the proliferation of rat glomerular mesangial (HBZY-1) cells and the role of Syk/Ras/c-fos signaling pathway in mediating this effect.@*METHODS@#HBZY-1 cells cultured in vitro were transiently transfected with miR-324-5p mimics or miR-324-5p-mimics-NC followed by treatment with lipopolysaccharide (LPS). MTT assay was used to detect the proliferation activity of HBZY-1 cells, and RT-qPCR was used to detect the expressions of miR-324-5p and the mRNA expressions of Syk, Ras, MEK1/2, ERK1/2 and c-fos mRNA. The protein expressions of p-Syk, Ras, p-MEK1/2, p-ERK1/2 and c-Fos were detected by Western blotting and immunofluorescence assay.@*RESULTS@#MTT assay showed that exposure to LPS significantly enhanced the proliferative activity of HBZY-1 cells. Compared with the cells treated with LPS and LPS + mimics NC, the cells transfected with miR-324-5p mimics prior to LPS exposure exhibited significantly lowered proliferative activity. Transfection with miR-324-5p mimics significantly lowered the mRNA expressions of Syk, Ras, MEK1/2, ERK1/2 and c-fos and the protein expressions of p-Syk, Ras, MEK1/2, ERK1/2 and c-Fos (@*CONCLUSIONS@#miR-324-5p can inhibit the proliferation of rat chronic glomerulonephritis cells induced by LPS by inhibiting Syk/Ras/c-fos signaling pathway and may potentially serve as a diagnostic indicator and a therapeutic target for chronic glomerulonephritis.

Research progress on the quality control of traditional Chinese medicine by the method of " quantitative analysis of multi-components by single marker" combined with fingerprint / 中国基层医药

The method of " quantitative analysis of multi-components by single marker(QAMS)" combined with fingerprint often used in the quality control of traditional Chinese medicine (TCM) and its preparation.This study reviewed and analyzed the data.It showed that " QAMS" can be used in the determination of multiple indicators in some traditional Chinese medicine and Chinese herbal compound preparations.This is a supplementary method for the determination of content, combined with the fingerprint to mutual benefit, quality evaluation of TCM is more comprehensive and scientific.

Improving effects of Huangdi Anxiao Capsules on insulin resistance in type 2 diabetic GK rats / 中成药

AIM To observe the effects of Huangdi Anxiao Capsules (Puerariae lobatae Radix,Eriobotryae Folium,Notoginseng Radix et Rhizoma,etc.) on blood glucose and insulin resistance in GK rats with type 2 diabetes mellitus (T2DM) and its possible mechanism of action.METHODS GK rats with T2DM included in the experiment were randomly divided into model group,rosiglitazone (1.44 mg/kg) group,Shenqi Jiangtang Granules (1.08 g/kg) group,Huangdi Anxiao Capsules high,medium and low (12,6,3 g/kg) group and normal control group of Wistar rats.After six weeks of consecutive administration,fasting blood glucose (FBG),serum insulin (FINS),fasting plasma glucose (FPG),and insulin resistance index (HOMA-IR) were measured in all groups.Serum biochemical indexes of (TG,TC,HDL-C,LDL-C),glycosylated hemoglobin (HbA1c),glucagon-like peptide (GLP-1) and insulin-like growth factor (IGF-1) were measured.The pancreatic tissue was obtained by routine paraffin embedding and HE staining to observe the pathological changes.RESULTS Compared with the normal group,FBG,FPG,FINS,HOMA-IR,TG,TC,HDL-C,LDL-C and HbA1c of the model group were significantly higher (P ＜0.01),and GLP-1 and IGF-1 expressions were markedly decreased (P ＜ 0.01).Compared with the model group,the levels of FBG,FPG,FINS,HOMA-IR,TG,TC,HDL-C,LDL-C and HbA1 c in Huangdi Anxiao Capsules high-,medium-and low-dose group were significantly decreased (P ＜ 0.05,P ＜0.01);GLP-1 and IGF-1 expressions were markedly increased (P ＜0.05,P ＜0.01),compared with the model group,the structure changes of pancreatic tissue in Huangdi Anxiao Capsules high-,medium-and low-dose groups largely reduced.CONCLUSION Huangdi Anxiao Capsules can reduce GK rats fasting blood glucose,insulin resistance,and its mechanism may be related to promoting the emergence and proliferation of pancreatic islet cells,improving the function of islet beta cells,and increasing insulin secretion.

Effects of Wuwei Wentong Chubi Capsules on autophagy proteins of Beclin-1 and LC3-Ⅱ in adjuvant-induced arthritis rats / 中成药

AIM To observe the effects of Wuwei Wentong Chubi Capsules (Cinnamomi Ramulus,Poria,Epimedii Folium,etc.) on autophagy proteins of Beclin-1 and LC3-Ⅱ in adjuvant-induced arthritis rats and to explore the possible mechanism of action.METHODS Sixty SD rats were randomized into six groups:normal group,model group,Wuwei Wentong Chubi Capsules (0.8,1.6,3.2 g/kg) groups and tripterygium glycosides (TPT,40 mg/kg) group.In addition to the normal group,adjuvant arthritis (AA) was induced with Freund's complete adjuvant.From the 2th day after injection of FCA,Wuwei Wentong Chubi Capsules with different doses and TPT were given by gavage once a day for 12 days.At the end of the experiment,ankle-joint samples were taken to examine the degree of AA by HE.Beclin-1 and LC3-Ⅱ mRNA were determined by real-time fluorescent quantitative PCR.Meanwhile,the protein expression levels of Beclin-1 and LC3-Ⅱ were determined by immunofluorescence histochemical staining and Western blot.RESULTS As compared with the model group,Wuwei Wentong Chubi Capsules (1.60,3.20 g/kg) not only significantly reduced histopathological injuries,but also effectively up-regulated mRNA and protein expressions of Beclin-1 and LC3-Ⅱ.CONCLUSION Wuwei Wentong Chubi Capsules has a therapeutic action on AA in rats,which might be partly associated with promoting autophagy,decreasing excessive proliferation of synovial cells,leading to the reduction of damage to articular cartilage.

Immunomodulatory property of Compound Shougong powder on S180 tumor bearing mice / 中国基层医药

Objective To study the immunomodulatory property of Compound Shougong powder(SGS) on S180 tumor-bearing mice.Methods The S180 model of tumor-bearing mice by Kunming mice were prepared.Then,the tumor-bearing mice were randomized into the model group,positive control group,and SGS groups (29.25g/kg,19.50g/kg,9.75g/kg).Besides the normal group,the other groups were used intragastric administration of into tumor-bearing mice by one time,14 consecutive days.The carbon clearance,quantitative hemolysis and DNFB induced delayed-type hypersensitivity were applied to assay effects of SGS on nonspecific immunity,humoral immunity and cellular immunity.Results Compared with the model control group,in the SGS groups,the tumor-bearing mice with spleen and thymus index of organ improved (all P ＜ 0.05),and the clearance index and values of phagocytic index were elevated(all P ＜0.05),and the productions of IgM and IgG in serum and hemolysin in splenocytes were enhanced(all P ＜0.05),and the percentages of T cells expressing CD4+,CD8+ and the ratio of two subset of T lymphocyte increased,and the IL-2 production of spleen lymphocytes was also improved (all P ＜ 0.05).Conclusion SGS showed significant immunomodulatory property on tumor-bearing mice through specific and nonspecific immunity.

Practice and insights of building the quality management system at the hospital / 中华医院管理杂志

Quality management covers every corner of hospital services,which upholds full-process quality management,continuous quality improvement and smooth management with patients at the center.By means of building a 3-tier quality management framework at the hospital,development of quality management criteria,appraisal indicators and documentation and use of quality management tools,quality management defects were identified from a third-party perspective.This effort has significantly improved quality of care at the hospital,and elevated the management execution and general service quality of the hospital.

Study on Quality Standard of Qingshen Granules / 中国中医药信息杂志

Objective To establish the quality standard of Qingshen Granules. Methods Thin-layer chrmatography was used to identify Rheum officinale Baill., Hedyotis Diffusa Wild. and Coptis chinensis Franch.. The contents of rhein, emodin and chrysophanol were determined by HPLC. The HPLC consisted of Kromasil C18 (4.6 mm×250 mm, 5 μm), methanol-0.1% phosphonic acid (70∶30) as mobile phase, flow rate of 1.0 mL/min, detection wavelength at 245 nm, and the column temperature was 30 ℃. Results The results of TLC showed that relevant spots were clear without interference against the negative sample. The calibration curves for rhein, emodin and chrysophanol were found to be linear within the range of 0.003 3-0.42 μg (r =0.999 9), 0.008 0-0.51 μg (r=1.000 0), 0.009 9-0.32 μg (r=1.000 0), respectively. The average recoveries were 98.84%, 99.04% and 100.35% with RSD of 1.30% (n=6), 1.34% (n=6) and 1.89% (n=6), respectively. Conclusion The methods are accurate and quick in qualitative identification and quantitative assay, and can be used for the quality control of Qingshen Granules.

Optimization of Ethanol Extraction Technology of Qingshen Granule with Orthogonal Test / 中国中医药信息杂志

Objective To establish the optimal ethanol extraction technology of Qingshen Granule. Methods The total content of emodin, chrysophanol and physcion, the content of tanshinoneⅡA and dry extact rate was set as indexes, orthogonal test was adopted to optimize the technology. Results The optimum extraction conditions were as follows:8 times of 80%alcohol, refluxing 3 times and 2 hours for each time. Conclusion The optimum technology of Qingshen Granule is simple, stable and effective.

Study on Quality Control Methods of Yuling Tea / 中国中医药信息杂志

Objective To establish the quality standard of Yuling Tea for its quality control. Methods Astragalus, Fructus cnidii L, Schisandra chinensis and Lycii Fructus in Yuling Tea were identified by TLC. The content of Schisandrin was determined by HPLC. Welch Materials C18 column (250 mm×4.6 mm, 5 μm) with mobile phase of methanol-water (70∶30) was used. The detective wavelength was 250 nm. Results The TLC for identification was simple and special. Schisandrin showed a good linear relationship in 0.222-0.222 0 μg, r=0.999 9. The average recovery was 98.96%, and RSD was 0.74%. Conclusion The method can accurately determine the content of Schisandrin in Yuling Tea. It can be used for quality control of the preparation.

Optimization of Extraction Process and Inclusion Technology of Volatile Oil in Huangpu Tongqiao Capsules by Orthogonal Design / 中国中医药信息杂志

Objective To optimize the extraction and inclusion process of mixed volatile oil of Rhizoma acori graminei, Fructus alpiniae oxyphyllae and Rhizoma chuanxiong in Huangpu Tongqiao Capsules. Methods With steam distillation method, extraction amount as indicator, the orthogonal experiment was used to optimze the extraction process of volatile oil from three factors such as water amount, soak time and extraction time. With saturated aqueous solution method, co-inclusion compound yield and volatile oil rate as indicators, the orthogonal experiment was used to optimize the inclusion process from three factors such as the proportion of volatile oil and β-CD, inclusion time and inclusion temperature. Results The optimum extraction was:adding eight times amount of water and soak for 2 hours to extract 7 hours. The optimum inclusion process was:the proportion of volatile oil andβ-CD was 1∶10, the inclusion time was 3 hours, the inclusion temperature was 40 ℃. Conclusion Optimal extraction process of oil has higher rate, and the volatile oil inclusion rate of inclusion process was also higher, the process is stable.

Effect of Ganle Keli on the Expression of ?-Smooth Muscle Actin in Hepatic Fibrosis Rats / 中国中医药信息杂志

Objective To observe the change of ?-smooth muscle actin (?-SMA) expression in carbon tetrachloride (CCl4)-induced liver fibrosis in rats after treatment with Ganle keli. Methods Liver fibrosis rat model was induced by CCl4 twice a week for 12 weeks. Ganle keli was used daily intragastric administration from the 7th week. Contents of NO, NOS and iNOS were determined by absorption spectrometry. Liver samples were collected after experiments and stained by immunohistochemistry of ?-SMA. Moreover ?-SMAmRNA expression in liver tissue was detected by RT-PCR technology. Results Ganle keli could significantly reduce NO, NOS and iNOS contents, effectively prevent the expression of ?-SMA, and significantly reduce ?-SMA mRNA in liver fibrosis rats. Conclusion Ganle keli can effectively inhibit the expression of ?-SMA in CCl4-induced fibrotic liver in rats.

Quality Standard of Compound Buwu Syrup / 中国药房

OBJECTIVE: To establish the quality standard of Compound buwu syrup. METHODS: TLC was employed to identify Psoralea corylifolia,Angelica sinensis,Ligusticum chuanxiong and Salvia miltiorrhiza.HPLC was applied for the determination of the contents of psoralen and isopsoralen.RUSULTS:Psoralea corylifolia,Angelica sinensis,Ligusticum chuanxiong and Salvia miltiorrhiza were all well-separated with clear TLC spots.The linear ranges of psoralen and isopsoralen were 0.030 4～0.304 ?g(r=0.999 1) and 0.036 2～0.362 ?g(r=0.999 5),respectively and the average recoveries were 100.1%(RSD=2.9%) and 102.4%(RSD=2.7%),respectively.CONCLUSION:The established standard is applicable for the quality control of Compound buwu syrup.

Clinical characteristics and treatment strategy of acute renal failure induced by crush syndrome after earthquake / 第三军医大学学报

Objective To retrospectively analyze the clinical characteristics of acute renal failure ( ARF) induced by crush syndrome after Wenchuan earthquake,and summarize the rational and effective treatment managements of this kind of ARF. Methods The case histories of 12 patients diagnosed as ARF related to the crush syndrome in Wenchuan earthquake were pigeonholed. In order to evaluate the curative effects of the clinical features,laboratorial examination,continuous renal replacement therapy ( CRRT) and cure time were ana- lyzed. Results Anaemia,fever and lung infection were frequently happened in the patients diagnosed as ARF,and the frequency was 91. 67% ,66. 67% and 58. 33% respectively. Pleural effusion and acute respiratory distress syndrome ( ARDS) were noted in 41. 67% of the patients,and the increase of transaminase was noted as 91. 67% . Hypocalcaemia,hypoproteinemia and marked increase of creatine kinase ( CK) appeared in all patients. The patients with CK value exceeded 3 000 IU/L were received CRRT,and there was marked relativity between these 2 variables ( r =0. 845) for the treatment of ARF. Although the proportion of CRRT practiced highly in patients with oliguria,fasciotomies and amputations,there was no significant difference when compared with closed injury and non-oliguria patients ( P = 0. 522 7) . Compared with patients without infections,wound infections were obviously delayed the cure time of ARF ( P = 0. 025 5) . Conclusion As compared with ARF from other causes,ARF related to the crush syndrome has unique characteristics,and easily complicates with multiple organ dysfunction syndrome. Among the treatments, heteropathy and renalreplacement therapy are frequently used. Thorough debridement and infection control are beneficial to renal function recovery.

Utilizing the Constructivism Learning Theory for the Setting of Clinical Integrate Curriculum / 中华医学教育探索杂志

The learning theory of constructivism, formed by the development of cognitive psychology, shaped well thecognitive structure of medical students. It paid attention to the curriculum configuration and integration, and also thoughtmuch of the situated instruction. The theory embodied the main ideology of regarding medical students as the instruc-tional central and the principle of independent study. It offered the theoretical basis and a new view for the setting ofclinical integrate curriculum.