Correlation between serum ceruloplasmin level and elevated impulsivity in elderly patients with Parkinson′s disease / 中国医师杂志

Objective:To investigate the correlation between serum ceruloplasmin level and elevated impulsivity in elderly patients with Parkinson′s disease (PD).Methods:227 elderly PD patients treated in Jinhua People′s Hospital from October 2019 to June 2021 were selected as the research objects. They were grouped according to the 75th percentile of serum ceruloplasmin. 0-75th percentile was defined as normal and >75th percentile was defined as high level. The differences of second-order and first-order factor scores of Barratt′s Impulsivity Scale Version 11 (BIS-11) between the two groups were observed. After balancing the general characteristics, the third part of Parkinson′s Disease Rating Scale (MDS-UPDRS), Hoehn&Yahr Scale, Addenbrooke Cognitive Examination Revised Edition (ACE-R), clinical treatment plan and other data, the correlation between ceruloplasmin and BIS-11 was observed.Results:According to the 75th percentile level of ceruloplasmin, 56 patients were included in the high-level group and 171 patients were included in the normal group. The level of ceruloplasmin, the ratio of female patients, MDS-UPDRS Ⅲ, Hoehn&Yahr Scale and ACE-R score in the high-level group were significantly higher than those in the normal group (all P<0.05). The second-order unplanned and corresponding first-order self-control and first-order self-knowledge complexity in the high-level group were higher than those in the normal group (all P<0.05). There was no significant difference in second-order attention, first-order attention, first-order cognitive instability, second-order motivation, first-order motivation, first-order stability and BIS-11 score between the two groups (all P>0.05). After removing the confounding factors by multifactor logistic analysis, ceruloplasmin was correlated with second-order unplanned and its corresponding first-order factors (self-control and self-knowledge complexity) (all P<0.05). Conclusions:The serum ceruloplasmin level in elderly PD patients is related to the elevated level of BIS-11 unplanned impulse.

Regulatory effect of small nuclear ribonucleoprotein-associated protein B on proliferation and metastasis of liver cancer cells / 中华肝脏病杂志

Objective: To study the expression and effect of small nuclear ribonucleoprotein-associated protein B (SNRPB) on proliferation and metastasis of liver cancer tissues and cells. Methods: The bioinformatics database starBase v3.0 and GEPIA were used to analyze the expression of SNRPB in liver cancer tissue and normal liver tissue, as well as the survival and prognosis of liver cancer patients. The expression of SNRPB mRNA and protein in liver cancer cell lines were analyzed by qRT-PCR and Western blot. RNA interference technique (siRNA) was used to determine SNRPB protein expression down-regulation. The proliferation effect on hepatocellular carcinoma cells was observed by MTT assay. Transwell invasion and migration assay was used to detect the changes in the metastatic ability of liver cancer cells after SNRPB down-regulation. Western blot was used to detect the changes of epithelial mesenchymal transition (EMT) markers in liver cancer cells after down-regulation of SNRPB expression. Data were compared between two groups and multiple groups using t-test and analysis of variance. Results: The expression of SNRPB was significantly higher in liver cancer tissue than normal liver tissue, and its expression level was correlated with the prognosis of liver cancer patients. Compared with the immortalized hepatocyte LO(2), the expression of SNRPB was significantly increased in the liver cancer cells (P < 0.01). siRNA-SNRPB had significantly inhibited the expression of SNRPB mRNA and protein in liver cancer cells. MTT results showed that the absorbance value was lower in SNRPB knockdown group than negative control group, and the difference at 96 h after transfection was most significant (P < 0.01). Transwell assay results showed that compared with the negative control group, the SNRPB knockdown group (MHCC-97H: 121.27 ± 8.12 vs. 46.38 ± 7.54; Huh7: 126.50 ± 6.98 vs. 41.10 ± 8.01) invasion and migration (MHCC-97H: 125.20 ± 4.77 vs. 43.18 ± 7.32; Huh7: 132.22 ± 8.21 vs. 38.00 ± 6.78) ability was significantly reduced (P < 0.01) in liver cancer cells. Western blot showed that the expression level of epithelial phenotype marker E-cadherin was decreased after down-regulation of SNRPB, while the expression levels of mesenchymal phenotype markers N-cadherin and vimentin was increased, suggesting that down-regulation of SNRPB inhibited EMT in liver cancer cells. Conclusion: SNRPB expression is significantly increased in liver cancer tissues and cells, and it is involved in regulating the proliferation, metastasis and EMT of liver cancer cells.

Anterior Cingulate Cortex Mediates Hyperalgesia and Anxiety Induced by Chronic Pancreatitis in Rats / 神经科学通报·英文版

Central sensitization is essential in maintaining chronic pain induced by chronic pancreatitis (CP), but cortical modulation of painful CP remains elusive. Here, we examined the role of the anterior cingulate cortex (ACC) in the pathogenesis of abdominal hyperalgesia in a rat model of CP induced by intraductal administration of trinitrobenzene sulfonic acid (TNBS). TNBS treatment resulted in long-term abdominal hyperalgesia and anxiety in rats. Morphological data indicated that painful CP induced a significant increase in FOS-expressing neurons in the nucleus tractus solitarii (NTS) and ACC, and some FOS-expressing neurons in the NTS projected to the ACC. In addition, a larger portion of ascending fibers from the NTS innervated pyramidal neurons, the neural subpopulation primarily expressing FOS under the condition of painful CP, rather than GABAergic neurons within the ACC. CP rats showed increased expression of vesicular glutamate transporter 1, and increased membrane trafficking and phosphorylation of the N-methyl-D-aspartate receptor (NMDAR) subunit NR2B and the α-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid receptor (AMPAR) subunit GluR1 within the ACC. Microinjection of NMDAR and AMPAR antagonists into the ACC to block excitatory synaptic transmission significantly attenuated abdominal hyperalgesia in CP rats, which was similar to the analgesic effect of endomorphins injected into the ACC. Specifically inhibiting the excitability of ACC pyramidal cells via chemogenetics reduced both hyperalgesia and comorbid anxiety, whereas activating these neurons via optogenetics failed to aggravate hyperalgesia and anxiety in CP rats. Taken together, these findings provide neurocircuit, biochemical, and behavioral evidence for involvement of the ACC in hyperalgesia and anxiety in CP rats, as well as novel insights into the cortical modulation of painful CP, and highlights the ACC as a potential target for neuromodulatory interventions in the treatment of painful CP.

Berberine mitigates nonalcoholic hepatic steatosis by downregulating SIRT1-FoxO1-SREBP2 pathway for cholesterol synthesis / 中西医结合学报

OBJECTIVE@#To investigate effects of berberine (BBR) on cholesterol synthesis in HepG2 cells with free fatty acid (FFA)-induced steatosis and to explore the underlying mechanisms.@*METHODS@#A steatosis cell model was induced in HepG2 cell line fed with FFA (0.5 mmol/L, oleic acid:palmitic acid = 2:1), and then treated with three concentrations of BBR; cell viability was assessed with cell counting kit-8 assays. Lipid accumulation in cells was observed through oil red O staining and total cholesterol (TC) content was detected by TC assay. The effects of BBR on cholesterol synthesis mediators were assessed by Western blotting and quantitative polymerase chain reaction. In addition, both silent information regulator 1 (SIRT1) and forkhead box transcription factor O1 (FoxO1) inhibitors were employed for validation.@*RESULTS@#FFA-induced steatosis was successfully established in HepG2 cells. Lipid accumulation and TC content in BBR groups were significantly lower (P < 0.05, P < 0.01), associated with significantly higher mRNA and protein levels of SIRT1(P < 0.05, P < 0.01), significantly lower sterol regulatory element-binding protein 2 (SREBP2) and 3-hydroxy 3-methylglutaryl-CoA reductase levels (P < 0.05, P < 0.01), as well as higher Acetyl-FoxO1 protein level (P < 0.05, P < 0.01) compared to the FFA only group. Both SIRT1 inhibitor SIRT1-IN-1 and FoxO1 inhibitor AS1842856 blocked the BBR-mediated therapeutic effects. Immunofluorescence showed that the increased SIRT1 expression increased FoxO1 deacetylation, and promoted its nuclear translocation.@*CONCLUSION@#BBR can mitigate FFA-induced steatosis in HepG2 cells by activating SIRT1-FoxO1-SREBP2 signal pathway. BBR may emerge as a potential drug candidate for treating nonalcoholic hepatic steatosis.

Determination of harpagide and harpagoside contents in Scrophularia ningpoensis from 15 origins / 药学实践杂志

Objective To establish an HPLC method for the simultaneous determination of harpagide and harpagoside content in Scrophularia ningpoensis (SN). Methods An Eclipse C18 column was used for determination of methanol extract of S. ningpoensis with a HPLC-PDA method and mobile phase of acetonitrile-0.03% phosphate solution in a gradient elution manner. The flow rate of mobile phase was 1.0 ml/min, and the detection wavelengths were 210 nm and 280 nm. Results Harpagide and harpagoside contents in SN showed good linear relationships within 0.1020-0.5100 mg/ml (r=0.9999) and 0.0340-0.1700 mg/ml (r=0.9999). Their average recovery rates were 97.44% and 97.08%.The RSDs were 0.93% and 1.24%.. There were significant differences in the contents of harpagide and harpagoside in SN from 15 origins (P<0.01). The content of harpagoside in Sichuan Long-dong, Zhejiang Lin-an, Zhejiang Pan-an and Henan Nan-feng is higher. Conclusion This method is stable, accurate and reproducible and can be used for the quality control of SN.

The molecular mechanism of stroke treatment by Fufang Longmai Ningfang based on network pharmacology / 药学学报

Stroke is a common disease with complex and diverse clinical manifestations. Fufang Longmai Ningfang has been found to exhibit therapeutic effect on stroke, but its molecular mechanism for treating stroke remains unclear. The aim of this study was to investigate the molecular mechanism of Fufang Longmai Ningfang in the treatment of ischemic stroke by using the method of network pharmacology to define the active ingredients, target and molecular pathway of Fufang Longmai Ningfang. The TCMSP database was used to obtain the potential active components of Fufang Longmai Ningfang in the treatment of stroke. The CNKI database was used to verify the literature. The target was predicted and screened by PharmMapper and UniProt database. The target protein group was collected by TTD database. The Cytoscape software was used to construct a "component-target" network map, "component-target-disease" network map, and "target protein interaction" network map. The EAGLE algorithm was used for cluster analysis, the KEGG database was used for pathway analysis, and the SYBYL software was used for molecular docking for bioactivity verification. We found 39 potential active ingredients and 17 potential effective targets related to stroke. The representative active ingredients were ligustrazine, dioscin, and puerarin, and the related targets were MMP9, NOS3, NOS2, KDR, ALB, IL2, TGFB2, and CPB among others. The study found that carbon metabolism and HIF-1 signaling pathway are the main molecular pathways for treatment of stroke by Fufang Longmai Ningfang. The treatment of ischemic stroke by Fufang Longmai Ningfang may involve reduction of inflammatory response, enhancement of vascular permeability and inhibition of cerebral ischemia-reperfusion injury, providing a theoretical basis for their clinical use.

Relationship between screen time with parent-child relation,preschooler's social ability and behavioral problems / 重庆医学

Objective To explore the relationships between the screen time with parent-child relations as well as social ability and behavioral problem in preschool children.Methods A total of 866 children aged 3-6 years old in Dazhou City conducted the sampling survey by adopting the children screen time questionnaire,parent-child relationship self-rating scale and young children's social ability and behavior assessment scale(SCBE-30).The single factor analysis and multinomial Logistic regression method were used to conduct the statistical analysis.Results The surveyed preschool children watching TV every day accounted for 99.31 ％,those playing mobile phones every day accounted for 81.87％ and those using computer accounted for 68.36％s.The average daily screen time at ordinary time was 1.75 h/d,those ≥2 h/d accounted for 16.05％;the average screen time at the weekend was 2.32 h/d,those ≥2 h/d accounted for 46.57％.The univariate analysis showed that the screen time in boy,left behind children,only child,mothers engaging in agriculture of peasant-worker or housewife was longer(P＜0.05);the screen time affected the social ability and behavior problems of children(P＜0.05).The longer the time children spent with their parents every day,the higher the parent-child relationship score(P＜0.05);the screen content affected the parent-child relationship and anxiety withdrawal behavior (P＜0.05).The polynormial regression analysis between the children's screen time with social ability,behavior problems,parent-child relation and contacting screen mode showed that the screen time had the negative effect relation with the social ability and parent-child relation(parents and children questionnaire) score(β=-1.115,-1.728,-1.909,P＜0.05),and had the positive effect relation with the scores of anger attack behavior and anxiety retreat behavior,and individual contacting screen (β=0.982,1.474,0.877,P＜0.05).Conclusion The screen time in preschool children is related with parent-child relation,social ability and behavioral problems.The parental accompany is beneficial to the development of parentchild relations in preschool children.

Effects of Bushen Huoxue Acupuncture Method on Learning and Memory Abilities and Endogenous Neural Stem Cells Proliferation in Hippocampus of SAMP8 Mice / 中国中医药信息杂志

Objective To investigate the effects of Bushen Huoxue acupuncture method on the behavioral changes and the proliferation of endogenous neural stem cells (NSCs) in hippocampus of Alzheimer disease (AD) model mice. Methods 18 male SAMP8 mice, seven months old, were randomly divided into acupuncture group, non-acupoint control group, and model control group. And another age-matched 6 male SAMR1 mice were prepared as normal control group. Mice in acupuncture group were intervened by acupuncture method in the acupoints of "Shenshu", "Baihui", "Xuehai", and "Geshu". Mice in non-acupoint control group were treated by stimulating the fixed non-point under the bilateral rib, while mice in model control group and normal control group were raised without special treatment but administered the stimulation of catching with the same time and the same stimulus intensity. All treatrment lasted for 8 weeks. After the intervention, the learning and memory abilitities and brain hippocampus Brd U positive cells of all groups were detected. Results Compared with the nomal control group, mice in the model control group had longer escape latency and less time spent in former platform quadrant (P＜0.05); the number of Brd U positive cells decreased significantly (P＜0.05). Compared with the model control group and the non-acupoint control group, mice in the acupuncture group had shorter escape latency and more time spent in former platform quadrant (P＜0.05); the number of Brd U positive cells increased significantly (P＜0.05). Conclusion Bushen Huoxue acupuncture method can improve the learning and memory abilities of SAMP8 mice AD model by inducing the proliferation of hippocampal endogenous NSCs.

Expression of copeptin and midkine in diabetic retinopathy and their significance / 国际眼科杂志(Guoji Yanke Zazhi)

@#AIM: To investigate the expression of copeptin and midkine(MK)in patients with diabetic retinopathy and their clinical significance. <p>METHODS: Totally 180 patients with type 2 diabetes mellitus(T2DM)admitted to our hospital from June 2016 to October 2017 were divided into three groups according to the criteria of diabetic retinopathy staging. Among them, there were no retinopathy group(68 cases), non-proliferative retinopathy group(72 cases), proliferative retinopathy group(40 cases)and 90 healthy subjects in the same period as the control group. The copeptin level was detected by double antibody immunosorbent assay and the MK level by ELISA. The glycosylated hemoglobin(HbA1c)was detected by TOSOH automatic glycosylated hemoglobin analyzer and the whole blood hs-CRP was detected by using blood routine instrument. Fasting plasma glucose(FPG), triglyceride(TG), cholesterol(TC), low density lipoprotein(LDL-C)and high density lipoprotein(HDL-C)were detected by automatic biochemical analyzer and the systolic blood pressure(SBP)and diastolic blood pressure(DBP)of each group were recorded. The relationship between copeptin and MK levels and blood lipid, blood pressure, biochemical parameters and the course of diabetes mellitus were also analyzed. <p>RESULTS: The levels of copeptin and MK in patients with diabetic retinopathy were significantly higher than those in controls, and the levels of copeptin and MK were gradually increased with the progress of disease(<i>P</i><0.05). The levels of copeptin and MK were correlated with the levels of HbA1c, hs-CRP and course of T2DM(<i>P</i><0.05), but no significant correlation with plasma lipids, blood pressure and FPG(all <i>P</i>>0.05). <p>CONCLUSION: The copeptin and MK levels are closely related to the course of diabetic retinopathy and the severity of the disease, both of which may be involved in the development of diabetic retinopathy.

Analysis of hospitalized cases with atrial fibrillation in high altitude areas in Tibet / 中国介入心脏病学杂志

Objective To analyze the etiological or associated factors and the treatment of patients with atrial fi brillation in high altitude areas in Tibet. Methods The clinical data of atrial fi brillation patients hospitalized in our hospital during January 2012 to Jane 2016 were analyzed retrospectively. Results (1) A total of 442 patients (male:female,1.2:1) were included in the study with ages of 30-96(65.9±12.3) years. The percentages of paroxysmal, persistent and permanent atrial fi brillation were 14.9%, 69.2%, and 15.8% respectively. The associated factors of atrial fi brillation included hypertension (53.4%), rheumatic heart disease (7.5%),chronic mountain sickness (10.6%), coronary heart disease(5.7%), hyperthyroidism (6.1%) and diabetes (9.0%).(2)Only 42 patients (9.5%) had evaluation with CHADS2score during hospitalization and actually 74.6% patients scored≥2. Twenty-one patients were restored to sinus rhythm during hospitalization and no patients had radiofrequency ablation.Conclusions The associated factors of atrial fi brillation in high altitude areas are similar to other areas. Thrombosis risk evaluation and anticoagulation therapy was not sufficient. Rhythm control rate was low and development of radio frequency ablation therapy should be considered.

MiR-106a induces peritoneal metastasis through acting on TIMP2 in human gastric cancer cell BGC-823 / 西安交通大学学报(医学版)

Objective To investigate the induction of microRNA (microRNA-106a,miR-106a)on the peritoneal metastasis of human gastric cancer cell BGC-823 by regulating matrix metalloproteinase inhibitor 2 (tissue inhibitor of metalloproteinases 2,TIMP2).Methods Human gastric cancer cell line BGC-823 was cultured to the logarithmic growth phase. The cells were divided into three groups: BGC-823, BGC-823/anti-miR-106a (antagomir)and BGC-823/negative control.Real-time PCR was used to identify the effect of antagomir.Transwell assay was used to detect the cell migratory and invasive abilities of these three groups in vitro .With small incision, the cells were injected into the abdominal cavity of nude mice to prepare a xenograft model.The animals were divided into two groups:miR-antagomir and miR-NC.The tumor growth in the nude mice was generally observed and estimated.Immunohistochemistry and Western blot methods were used to detect the expression of metastasis-associated protein TIMP2 on the several abdominal organs.Results The expression level of miR-106a was down- regulated in BGC-823/anti-miR-106a group,with the fold change of 0.05±0.01,which was significantly different from that in NC group (t=-18.001,P＜0.001).In vitro exogenously silencing of miR-106a gene,the numbers of invasive and migratory cells in BGC-823/anti-miR-106a group were both significantly lower than those in BGC-823 and BGC-823/negative control groups (P＜0.001).In vivo xenograft model showed that the down-regulation of miR-106a weakened the peritoneal metastasis ability of BGC-823 cells in nude mice abdominal cavity,which was reflected by the decrease of tumor number and tumor size.With the inhibition of miR-106a,the expression of TIMP2 in miR-antagomir group was significantly higher than that in miR-NC group (P＜0.05).Conclusion BGC-823 cell has the tumorigenicity in nude mice.Silencing of miR-106a inhibits gastric cancer cell metastasis, which suggests that it has the oncogenic function.MiR-106a may induce the strengthened peritoneal metastasis ability of BGC-823 cell through acting on TIMP2.

Effect of Acupuncture on Hippocampal Flotillin-1, NEP and Aβ42 Expressions in SAMP8 Mice / 上海针灸杂志

Objective To investigate the effect of acupuncture on behaviors and its mechanism of action in a SAMP8 mouse model of Alzheimer disease.Methods Sixty 6-month-old male SAMP8 mice were randomized to acupuncture,model and non--acupoint groups.Twenty male SAMP 1 mice of the same age constituted a normal control group.The acupuncture group received intervention by acupuncture at Shenshu,Baihui,Xuehai and Geshu.After eight weeks,a behavioral test was performed using the Morris water maze in every group of mice.The expressions of Flotillin-1,NEP and Aβ42 in mouse hippocampus were determined by western blot.Results The Morris water maze test showed that as compared with the model group,escape latency shortened significantly (P＜0.05) and the time spent in the former platform quadrant and the number of former platform position crossings increased (P＜0.05) in the acupuncture group of mice;escape latency,the time spent in the former platform quadrant and the number of former platform position crossings had no significant differences in the non-meridian-acupoint group of mice (all P＞0.05).As compared with the model group,Flotillin-1 expression decreased significantly in the acupuncture group (P＜0.05) but had no significant difference in the non-meridian-acupoint group (P＞0.05);NEP expression increased significantly in the acupuncture group (P＜0.05) but had no significant difference in the non-meridian-acupoint group (P＞0.05);Aβ42 expression decreased significantly in the acupuncture group (P＜ 0.05) but had no significant difference in the non-meridian-acupoint group (P＞0.05).Conclusions Acupuncture can markedly improve learning and memory abilities in a SAMP8 mouse model of AD and reduce Flotillin-1 content and upregulate NEP expression in SAMP8 mouse hippocampus to decrease Aβ42 expression,relieve neurotoxicity and produce a neuroprotective effect.

Early intervention with Didang decoction delays macrovascular lesions in diabetic rats through regulating AMP-activated protein kinase signaling pathway / 中国天然药物

The study aimed to investigate the intervening role of Didang decoction (DDD) at different times in macrovascular endothelial defense function, focusing on its effects on the AMP-activated protein kinase (AMPK) signaling pathway. The effects of DDD on mitochondrial energy metabolism were also investigated in rat aortic endothelial cells (RAECs). Type 2 diabetes were induced in rats by streptozotocin (STZ) combined with high fat diet. Rats were randomly divided into non-intervention group, metformin group, simvastatin group, and early-, middle-, late-stage DDD groups. Normal rats were used as control. All the rats received 12 weeks of intervention or control treatment. Western blots were used to detect the expression of AMP-activated protein kinase α1 (AMPKα1) and peroxisome proliferator-activated receptor 1α (PGC-1α). Changes in the intracellular AMP and ATP levels were detected with ELISA. Real-time-PCR was used to detect the mRNA level of caspase-3, endothelial nitric oxide synthase (eNOS), and Bcl-2. Compared to the diabetic non-intervention group, a significant increase in the expression of AMPKα1 and PGC-1α were observed in the early-stage, middle-stage DDD groups and simvastatin group (P < 0.05). The levels of Bcl-2, eNOS, and ATP were significantly increased (P < 0.05), while the level of AMP and caspase-3 were decreased (P < 0.05) in the early-stage DDD group and simvastatin group. Early intervention with DDD enhances mitochondrial energy metabolism by regulating the AMPK signaling pathway and therefore may play a role in strengthening the defense function of large vascular endothelial cells and postpone the development of macrovascular diseases in diabetes.

Action mechanism of apoptosis in the development of acute lung injury after severe acute pancreatitis / 解放军医学杂志

Objective To explore the role of apoptosis in the development of acute lung injury (ALI) after severe acute pancreatitis (SAP) and its mechanism via Notch/Hes signal transduction pathway in the pathologic process.Methods Fifty healthy male Sprague Dawley rats were randomly divided into,sham group (n=8) and model group (n=42).Tissue samples of model group were collected randomly at 3 (n=10),6 (n=10),12 (n=10) and 24h (n=12) after model establishment.Tissue collection of Sham group was conducted at 3h.Left lung wet/dry weight ratio (W/D) was calculated;Histological scores of pancreatic and lung tissues were assessed under microscope;myeloperoxidase (MPO) and tumor necrosis factor-α (TNF-α) of lung tissues were determined by enzymatic-chemical method and radioimmunoassay method respectively.Apoptosis of lung cells was evaluated by TUNEL assay followed by calculation of apoptosis index.Protein levels of Notch-l,Hes-1 and Hes-5 were also detected semi-quantitatively by Western blotting.Results The lung tissue W/D of model rats exhibited a gradual increment at the prior 12 hours,and the ratio was significantly higher than that of sham group at each time point (P＜0.01) while it reached the peak at 12h time point.Pancreatic and lung pathological scores of model groups were increased at all time points and significantly higher than sham group (P＜0.01).Lung pathological scores of model groups achieved a peak at 12h.Meanwhile,lung MPO and TNF-α of model groups showed the same increment trend at each time points.The apoptosis index (AI) of lung cells in model groups were higher than that in sham group (P＜0.01).Compared with sham group,the model groups showed lower protein expression levels of Notch-1,especially at 3,6 and 12h (P＜0.05).Notch-1 protein expression level of 12h group was lower than that of 3,6 and 24h groups (P＜0.01).Correlation analysis found that apoptosis of lung cells was significantly negatively related to histopathological scores (r=-0.834,P＜0.01).The Notch-1 protein expression showed positive correlation with AI (r=0.515,P=0.004),but significantly negative correlation with W/D (r=-0.593,P=0.001),histological scores (r=-0.306,P=0.002),MPO (r=-0.687,P＜0.01) and TNF-α (r=-0.574,P=0.001) in the lung tissue.Conclusions Lung cell apoptosis,which is negatively correlated to tissue injury levels,may play an important role in the development of ALI after SAP.Inhibitory state of Notch-1 signaling transduction can aggravate ALI in the pathologic process.

Diagnostic value of serum S100A2 and S100A6 levels in non-small cell lung cancer / 肿瘤研究与临床

Objective To evaluate the potential of S100 calcium binding proteins S100A2 and S100A6 levels in serum as diagnostic markers for non-small cell lung cancer (NSCLC). Methods Enzyme-linked immunosorbent assay (ELISA) was performed to detect the levels of S100A2 and S100A6 in 141 NSCLC patients and 150 healthy subjects. Results The average level of serum S100A2 in NSCLC group was (15.02±0.79) ng/ml, that in healthy control group was (11.18±0.64) ng/ml, and the difference was statistically significant (P=0.002). The average level of serum S100A6 in NSCLC group was (12 760±651.8) pg/ml, that in healthy control group was (8 434±408.2) pg/ml, and the difference was statistically significant (P<0.001). The serum levels of S100A2 and S100A6 in stageⅠ/ⅡNSCLC patients were higher than those in healthy controls (P<0.05), respectively. Receiver operating characteristic (ROC) curve analysis showed that S100A2 and S100A6 could distinguish NSCLC patients from healthy controls [area under the curve (AUC) were 0.646 and 0.668, respectively]. Meanwhile, these two proteins showed notable capabilities for distinguishing stage Ⅰ/ⅡNSCLC from healthy controls (AUC were 0.708 and 0.702, respectively). Conclusion Serum levels of S100A2 and S100A6 are significantly elevated in the early stage for NSCLC patients, which can be the potential biomarkers for the diagnosis of NSCLC.

Inheritance in endophytic fungi from Melia toosendan and diversity of genes of PKS and NRPS / 中草药

Objective: To explore the inheritance in endophytic fungi from Melia toosendan and the diversity of the genes of PKS and NRPS and to lay the foundation of looking for the synthesis of the potential strains of bioactive substances. Methods: To identify the morphology of 39 strains of endophytic fungi separated from the medicinal plant M. toosendan; The ITS sequences and the genes of PKS and NRPS were obtained using PCR method, compared by BLAST and analyzed by phylogenesis after sequencing. Results: The morphological identification and phylogenetic analysis on 39 strains showed that all strains of endophytic fungi from M. toosendan belonged to 25 categories, mainly Penicillium, Aspergillus, and Trichoderma. The dominant fungus species were Aspergillus (17.9%), and Penicillium (15.4%). PKS (12) and NRPS (6) genes were detected in this study, All NRPS genes were Penicillium. Conclusion: The endophytic fungi of M. toosendan have a rich genetic diversity and strong potential of synthesis of bioactive substances. Further research on Penicillium and Aspergillus should be carried out.

Effect of Lycium barbarum polysaccharides on neurogenesis and learning & memory in manganese poisoning mice / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To study the effect of Lycium barbarum polysaccharides (LBP) on neurogenesis and learning & memory of manganese poisoning mice.</p><p><b>METHODS</b>Healthy adult Kunming mice were divided into 5 groups, the control group (A), the manganese poisoning (by manganese chloride peritoneal injection) group (B), the manganese poisoning and treated with gastric perfusion of high, medium, low dosage LBP groups (C, D and E). The spatial learning & memory capacity of mouse was determined by Morris water maze training test. The neurogenetic cells were labelled with bromodeoxyuridine (BrdU) and detected by immunohistochemistry.</p><p><b>RESULTS</b>The average escape latency was significantly higher and the times of passing through platform lower in group B than those in group A (P<0.05). BrdU positive cells in groups C, D and E were significantly more than those in group B (P<0.05).</p><p><b>CONCLUSION</b>LBP could enhance the learning & memory capability of the manganese poisoning mice by promoting neurogenesis in hippocampus.</p>

Diagnosis evaluation for different section of deep venous thrombosis by color Doppler ultrasound compared to DSA / 中华超声影像学杂志

Objective To evaluate the value of two-dimension and color Doppler flow imaging(CDFI) in diagnosis of deep venous thrombosis(DVT) for different segments of lower extremity compared with digital subtract angiography(DSA). Methods Fifty-eight patients suspected of DVT enrolled in the study. Every segment venous of affected extremities was observed by CDFI. All patients underwent DSA examination. CDFI findings were compared with the results of DSA. Statistical analysis was according to quadruple tabular form. The indexes include sensitivity, specificity, accuracy, false positive rate and so on. Every segment of lower extremity deep venous was evaluated and analysis. Results Total of 150 vessels of fifty-eight patients were detected with CDFI and DSA. Evaluation findings of statistical analysis with quadruple tabular form as follows= sensitivity of common lilac vein was 82.6%, specificity was 66.7%; sensitivity of external lilac vein was 83.3%, specificity was 80.0%; sensitivity of hypogastria vein was 80.0 %, specificity was 66.7%;sensitivity of popliteal vein was 92.6 %, specificity was 92.2 % ;sensitivity of femoral vein was 96.2%, specificity was 93.8% ; sensitivity of anterior tibial vein was 71.4%, specificity was 75.0%; sensitivity of posterior tibial veins was 72.7%, specificity was 75.0%. Conclusions As the first-choice examination for DVT, ultrasonography has different diagnostic value for different segment of venous. It is more sensitive and accurate for femoral, popliteal and external iliac veins thrombus, but less sensitive for anterior,posterior tibial veins and bypass circuit vessels.

Effect of Tanshinone II A on expression of EGF and EGFR in hepatocellular carcinoma cell line SMMC-7721 / 浙江大学学报·医学版

<p><b>OBJECTIVE</b>To observe the effect of Tanshinone II A on the expression of epidermal growth facter (EGF) and epidermal growth facter recepter (EGFR) in human hepatocellular carcinoma cell line SMMC-7721.</p><p><b>METHODS</b>The human hepatocellular carcinoma SMMC-7721 cells cultured in vitro was treated with different concentrations of Tanshinone II A. The proliferation of the cells was measured by MTT assay, and the apoptosis of the cells was investigated by flow cytometry and cytochemical staining with Hoechst 33342. The expression of EGF and EGFR was detected by immunocytochemistry method. The levels of EGF in medium were measured by radioimmunoassay.</p><p><b>RESULT</b>Tanshinone II A inhibited the growth of SMMC-7721 cells remarkably in a dose-dependent manner. The inhibitory rate reached the peak (72.5%) after 0.5 microg/ml Tanshinone II A was used for 48 h, which was significantly higher than that in the controls (P<0.05). FCM analysis showed that when SMMC-7721 cells were treated with 0.5 microg/ml Tanshinone II A, the apoptosis rates for 24 h, 48 h and 72 h were (4.06+/-0.27)%, (7.58+/-0.56)% and (5.23+/-0.13)%, respectively which were markedly higher than those in the controls (all P<0.01). SMMC-7721 cell apoptosis with cell shrinkage, nuclear chromatin concentration and fragmentation as well as the formation of apoptotic bodies were observed by cytochemical staining when treated with Tanshinone II A. The immunocytochemistry showed that the expressions of EGF and EGFR were down regulated while the concentration of Tanshinone II A was increasing. The high expression rates for EGF and EGFR were 10%, 20%, respectively, and the gray scale was 181.52+/-1.63, 179.37+/-1.59, which were markedly higher than those in the controls (all P<0.05). The levels of EGF in medium measured by radioimmunoassay were decreased significantly after Tanshinone II A treatment.</p><p><b>CONCLUSION</b>Tanshinone II A can inhibit cell proliferation and induce apoptosis in hepatocellular carcinoma cell line SMMC-7721, which may be related to the down-regulation of EGF and EGFR protein expression.</p>