Effects of gypenosides on proliferation and apoptosis of human gastric cancer cells and its mechanism / 中国药理学通报

Aim To explore the effect of gypenosides on proliferation and apoptosis of human gastric cancer cells SGC-7901 and AGS and its mechanism. Methods Different concentrations of gypenosides were cultured with human gastric cancer cells SGC-7901 and AGS. Cell viability assay was used to detect cell proliferation activity, and the IC

Study on intestinal absorption characteristics of apixaban by in vivo one-way perfusion in rats with renal failure / 药学实践与服务

Objective To study the intestinal absorption characteristics of apixaban in rats with renal failure, and the effect of P-glycoprotein (P-gp) inhibitors on its absorption behavior. Methods The in vivo absorption experiment was performed in CRF rats by one-way perfusion method and the absorption factors was investigated by establishing the HPLC analysis method. Results The absorption rate constant (Ka) of apixaban in each intestinal segment was significantly different (P<0.05) with no significant difference in apparent absorption coefficient (Papp) (P>0.05). The Ka and Papp values in the rat ileum decreased with the increasing of drug concentration. After addition of P-gp inhibitor verapamil hydrochloride (0.1 mmol/L), the Ka and Papp values of apixaban in the jejunum and ileum were significantly increased. Conclusion Apixaban is absorbed in all intestinal segments. P-gp inhibitors can significantly promote the absorption of apixaban in jejunum and ileum, suggesting that apixaban is P-gp substrate and its absorption mechanism is supposed to be active transport.

Mangiferin inhibited neuroinflammation through regulating microglial polarization and suppressing NF-κB, NLRP3 pathway / 中国天然药物

Inflammation plays important roles in the progress of neurodegenerative diseases, such as Parkinson's disease and Alzheimer's disease. Microglia is responsible for the homeostasis of the central nervous system (CNS), and involved in the neuroinflammation. Therefore, it could be potential in treatment of neurodegenerative diseases to suppress the microglia-mediated neuroinflammation. Mangiferin, a major glucoside of xanthone in Anemarrhena Rhizome, has anti-inflammatory, anti-diabetes, and anti-oxidative properties. However, the effect of mangiferin on the inflammatary responses of microglia cells are still poorly understand. In this study, we investigated the mechanism by which mangiferin inhibited inflammation in LPS-induced BV

Clinical effect of retinal inner limiting membrane peeling combined with flute needle drawing in the treatment of idiopathic macular hole without staining dye / 国际眼科杂志(Guoji Yanke Zazhi)

@#AIM: To investigate the efficacy of pars plana vitrectomy(PPV)with inner limiting membrane(ILMP)flap peeling and flute needle drawing in the treatment of idiopathic macular hole(IMH)without staining dye.<p>METHODS: A retrospective non-randomized case study on 76 patients(76 eyes)were diagnosed with IMH in our hospital from January 2018 to January 2019, 38 eyes were treated with PPV combined with ILMP and air tamponade without staining(group A), the remaining 38 eyes were treated with PPV combined with ILMP, needle drawing the Hole edge and air tamponde without staining(group B). The patients were followed up for more than 6mo, the macular hole closure, the best correct visual acuity(BCVA)and postoperative complication were analyzed in the two groups.<p>RESULTS: At 6mo after surgery, the closure rate of MH and BCVA improvement rate in group A were significantly lower than those in the group B(84% <i>vs</i> 100%, 76% <i>vs</i> 95%, <i>P</i><0.05). With the passage of postoperative time after surgery, the BCVA of two groups of patients gradually improved, and the BCVA of group B was better than that of group A at 7, 14d, and 1, 3, 6mo after surgery(<i>P</i><0.05). There were no postoperative complications in two groups.<p>CONCLUSION: PPV combined with ILM peeling without staining agent and flute needle drawing is effective in treating IMH, which is better than ILM-P group in both closure rate and BCVA improvement.

The impact of the initial fluid resuscitation with different ratio of crystalloid and colloid on the prognosis of patients with moderate severe acute pancreatitis / 中华胰腺病杂志

Objective To investigate the impact of the initial fluid resuscitation with different ratio of crystalloid and colloid on the prognosis of patients with moderate severe acute pancreatitis (MSAP).Methods A retrospective analysis was made by reviewing the clinical data of 72 patients with the diagnosis of MSAP from January 2015 to July 2017 in Shanghai Changhai Hospital.According to crystalloid-colloid ratio,which was the total volume of crystalloid fluid versus colloid fluid in the first 7d at admission,patients were randomly divided into low crystalloid-colloid ratio group (＜ 4.5),middle crystalloid-colloid ratio group (4.5-7.5),and high crystalloid-colloid ratio group (＞ 7.5).The parameters of the fluid resuscitation,the cases progressing into severe acute pancreatitis (SAP),the incidence of multiple organs dysfunction syndrome (MODS) and mechanical ventilation,pancreatic necrosis and infection rate,30-day mortality,the duration of systemic inflammatory response syndrome(SIRS) and the time reaching full amount of enteral nutrition were analyzed.Results There was no statistically significant difference in gender,age,etiology and APACHE Ⅱ score within 24 h at admission in each group,which were comparable.Within the first 7 d,there were no statistic difference in the total volume of fluid infusion and the speed of resuscitation in the three groups.While the total fluid volume in the first 24 h and 72 h [(3 095 ± 1 253) ml vs (2 524 ± 751) ml,(8 005 ± 7 269) ml vs (6 667 ± 1 498)ml],the total volume of crystalloid fluid in the first 7 d [(14 485 ± 3 917) ml vs (11 544 ±2 639) ml],crystalloid-colloid ratio (12.7 ± 4.9 vs 6.0 ± 1.0),the cases of SAP (12 vs 4),MODS (41.7 ％vs 16.0％) in high ratio group were significantly higher than those in middle ratio group,but the total volume of colloid fluid was significantly lower [(996 ± 528) ml vs (1 968 ± 574) ml].In addition,the duration of SIRS [(16.5 ± 15.2) d vs (8.2 ± 6.4) d],and the time reaching full amount of enteral nutrition [(7.2 ±3.6) d vs (4.8 ± 2.4) d] in high crystalloid-colloid ratio group were higher than those in middle crystalloid-colloid ratio group (all P ＜ 0.05).Comparing with middle crystalloid-colloid ratio group,there were no significant difference in the mechanical ventilation rate,pancreatic necrosis and infection rate and 30-day mortality in high ratio group.The total volume of colloid fluid was significantly higher [(3 680 ± 1 310) vs (1 968 ±574)] and the crystalloid-colloid ratio was significantly lower [(3.2 ±0.9) vs (6.0 ± 1.0)] in low ratio group than that in middle ratio group,and there were no statistical differences on other parameters.Conclusions For the patients with MSAP,early fluid resuscitation with the crystatloid-colloid ratio of (4.5-7.5) can decrease the incidence of SAP and MODS,shorten the duration of SIRS,and promote the recovery of intestinal mucosal barrier function.

Analysis of intravitreal injection of triamcinolone acetonide before vitrectomy for retinal detachment associated with choroidal detachment / 国际眼科杂志(Guoji Yanke Zazhi)

AIM: To observe the clinical effects of intravitreal injection of triamcinolone acetonide ( TA ) before vitrectomy for retinal detachment associated with choroidal detachment. · METHODS: Totally 23 cases ( 23 eyes ) of retinal detachment associated with choroidal detachment in our hospital were treated by intravitreal injection of TA 4-5d before 23-Gauge micro-invasive vitrectomy combined with silicone oil injection. All the cases were followed up between 6 to 9mo. The anatomic retinal reattachment, visual acuity, intraocular pressure and postoperative complications were observed and analyzed. ·RESULTS: After the surgery, the visual acuity of all patients were improved, with 9 eyes better than 0. 3 (39%), and 18 eyes better than 0. 05 (78%). The BCVA at 1wk, 1 and 3mo and last follow up were different compared with before operations (P<0. 05). The mean intraocular pressure was 4. 02±1. 47mmHg before injection, 13.69±4. 68mmHg before operation (P<0. 05), and17.72±5.87 mmHg after operation (P<0.05). The retina of all patients treated were reattached 2wk post-operatively. The retinal reattachment rate after the primary surgery and the secondary surgery was 87% and 100%, respectively. Post-operative complications included 7 eyes of transient high intraocular pressure, occurred during 12-14d after operations and returned to normal after less glucocorticoid eye drops and giving IOP lowering drugs. There were no intraocular hemorrhage, iatrogenic retinal breaks, infections, or lens injuries. · CONCLUSION: Intravitreal injection of TA before vitrectomy for retinal detachment associated with choroidal could improve the clinical effects, and decrease the difficulty of surgery while the injection itself is pretty safe.

The application of breast blood oxygen functional imaging combined with mammography examination in breast cancer screening / 预防医学

Objective To evaluate the effect of breast blood oxygen functional imaging combined with mammography on breast cancer screening in women aged over 40 years.Methods A total of 10 076 cases of women in our hospital underwent breast blood oxygen functional imaging and mammography X -ray examination.The breast imaging report and data system (BI -RADS)III level of women performed on the biopsy pathology were used as the gold standard.The effect of different inspection methods were compared and analyzed.Results Among 10 076 cases,235 cases were diagnosed as BI -RADS,which was diagnosed by blood oxygen functional imaging system and a molybdenum target X -ray diagnosis of III.Thirteen cases with early breast cancer were diagnosed by needle biopsy.And 222 cases were diagnosed benign lesions.The sensitivity of the blood oxygen functional imaging system was 69.23% (9 /13)and 85.58% (190 /222), respectively.The sensitivity of molybdenum target X -ray was 76.92% (10 /13),and the specificity was 82.88% (184 /222).The sensitivity of combined detection was 100.0% (13 /13)and the specificity was 82.88% (184 /222).The accuracy index of combined molybdenum target X -ray (0.829)was significantly higher than that of single detection (0.548 and 0.598)(U =2.117,2.501,P <0.05).Conclusion Breast blood oxygen functional imaging instrument combined with molybdenum target examination could effectively improve the accuracy of diagnosis in breast cancer screening among women over 40 years.

Effect of vasoactive intestinal peptide on defecation and VIP-cAMP-PKA-AQP3 signaling pathway in rats with constipation / 中南大学学报(医学版)

To observe the effect of vasoactive intestinal peptide (VIP) on the metabolism of intestinal fluid and cyclic AMP protein kinase A signaling pathway (cAMP-PKA) and water channel protein 3 (AQP3) in rats with constipation, and to explore the mechanism of VIP in the treatment of constipation.
 Methods: A total of 45 healthy adult rats were randomly divided into a control group, a model group, a model +VIP group. After 4 weeks of VIP treatment, the first black stool time were examined with the ink gastric method; the water content in feces was calculated; the morphological changes in colonic tissues were observed by HE staining. The expression of VIP and AQP3 protein levels in colon tissues were detected by Western blot; and the cAMP, PKA, AQP3 mRNA expression levels were detected by quantitative real time polymerase chain reaction (qPCR). 
 Results: Compared with the control group, the first black stool time was prolonged, the water content of fecal decreased significantly (both P<0.01); part of the colon mucosa epithelial cells were destructed; the goblet cell volume decreased and quantity was reduced; the contents of AQP3 and VIP in colon tissues were significantly decreased, and the cAMP, PKA and AQP3 mRNA levels were decreased in the model group (all P<0.05). Compared with the model group, the first black stool time in the model +VIP group was shortened, the fecal water content increased significantly (both P<0.05); the mucosal epithelium integrity improved, the number of goblet cells increased; the content of AQP3 and VIP in colon tissues was increased, and the cAMP, PKA, and AQP3 mRNA levels were elevated (all P<0.05).
 Conclusion: Intravenous injection of VIP can regulate intestinal fluid metabolism and improve the symptoms of constipation in rats, which might be related to the regulation of VIP-cAMP-PKA-AQP3 signaling pathway.

Effect of fluoxetine on the expressions of BDNF and Bcl-2 during fear memory formation / 药学学报

The aim of this study is to investigate the effect of fluoxetine (FLX) on the expressions of BDNF and Bcl-2 in the hippocampus, the amygdala and the prefrontal cortex of conditioned fear (CF) model mice. Forty eight mice were randomly divided into three groups, normal control group, CF stress group and FLX-pretreated CF group. The FLX-pretreated CF group was given FLX (10 mg x kg(-1) x d(-1)) for 7 days before CF stress. After CF stress model was established, all mice were given behavioral experiments to test whether FLX impaired or improved the auditory and contextual fear conditioning. Then mice were sacrificed. The expressions of BDNF and Bcl-2 were detected by Western blotting. The results showed that the freezing time of FLX-pretreated CF group was significantly lower than that of CF group; FLX pretreatment up-regulated the expression of Bcl-2 in the hippocampus at 1 d after CF stress (P < 0.001), but no significant differences was observed at 7 d; BDNF significantly increased in the hippocampus at 7 d (P < 0.001), but no differences at 1 d; the expressions of BDNF and Bcl-2 in the amygdala and the prefrontal cortex were of no obvious differences between CF group and FLX-pretreated CF group at 1 d or 7 d after CF stress. Parallel to these changes, pretreatment with FLX could affect histopathologic changes induced by CF stress. Furthermore, the results indicated that FLX pretreatment could protect against CF stress-induced neurological damage via the activation of BDNF and Bcl-2 in hippocampus.

Clinical experience of 1064 cases of severe acute pancreatitis: medical treatment predominant therapy / 中华胰腺病杂志

Objective To evaluate the value of medical treatment in the management of SAP.Methods From January 2000 to December 2011,a total of 1064 cases out of 931 SAP patients were admitted and retrospectively analyzed.The etiologies,severity score,complication rates,therapies,effectiveness and costs of those SAP cases were summarized.Results There were 559 males and 372 females with a mean age of (51 ± 15)years old.The main cause was biliary tract disease (58.3％),followed by fat-rich diet (31.2％),hyperlipidemia (13.6％) and alcohol (7.1％).At the time of admission,95.5％ of SAP patients presented with level D disease according to Balthazar CT severity index,26.0％ had a Ranson score ≥3 and 30.1％ had an APACHE Ⅱ score ≥ 8.There were 42.7％ cases complicated with systemic inflammatory response syndrome (SIRS).Acute lung injury and acute respiratory distress syndrome (ARDS),acute kidney injury,shock or heart failure,acute liver dysfunction,and diffuse intravascular clotting (DIC)occurred in 24.0％,8.1％,5.4％,3.2％,and 1％ of all patients,respectively.Other complications of SAP included abdominal cavity bleeding (n =17),pseudocyst bleeding (n =9),pancreatic abscess (n =78) and gastrointestinal fistula (n =33).Totally 25 (2.3％) patients died in hospital and 36 (3.4％) patients were discharged against advice,with an overall treatment success rate of 94.3％.The mean hospital stay was (23.7 ± 19.2) d,and the average cost was 52.3 thousands of RMB.Conclusions A comprehensive treatment pathway relying on medical treatment,focusing on organ function support and assisted by miniinvasive intervention may improve the treatment success rate of SAP,which is worth of further application.

Construction of recombinant yellow fever virus 17D containing 2A fragment as a vaccine vector / 生物工程学报

The Yellow Fever (YF) vaccine, an attenuated yellow fever 17D (YF-17D) live vaccine, is one of the most effective and safest vaccines in the world and is regarded as one of the best candidates for viral expression vector. We here first reported in China the construction and characterization of the recombinant expression vector of yellow fever 17D which contained the proteinase 2A fragment of foot-and-mouth disease virus (FMDV). Three cDNA fragments representing the full-length YF-17D genome, named 5'-end cDNA (A), 3'-end cDNA (B) and middle cDNA (C), were obtained by reverse transcription polymerase chain reaction (RT-PCR), together with the introduction of SP6 enhancer, necessary restriction sites and overlaps for homologous recombination in yeast. Fragment A and B were then introduced into pRS424 in turn by DNA recombination, followed by transfection of fragment C and the recombinant pRS424 containing A and B (pRS-A-B) into yeast. A recombinant vector containing full length cDNA of YF-17D (pRS-YF) was obtained by screening on medium lack of tryptophan and uracil. A recombinant YF-17D expression vector containing FMDV-2A gene fragment (pRS-YF-2A1) was then constructed by methods of DNA recombination and homologous recombination in yeast described above. In vitro transcription of the recombinant vector pRS-YF-2A1 was then carried out and introduced into BHK-21 cells by electroporation. Results of indirect immunofluorescence assay (IFA) and titer determination showed a stable infectious recombinant virus was gotten, whose features such as growth curve were similar to those of the parental YF-17D. The results suggest that the recombinant vector pRS-YF-2A1, by introduction of heterogenous genes via 2A region, is potential to be an effective live vaccine expression vector.

Roles of telemedicine in health keeping of grassroots officers and soldiers / 医学研究生学报

Aiming at the characteristics of telemedicine service,we summarized our telemedical consultation work during 2006-2008.We believed that telemedical consultation from big hospitals are very important in maintaining physical and moral health conditions and treating severe sickness of grassroots officers and soldiers,it can also play active roles in the construction of basic army unit hospitals.