Objective To investigate the effects of berberine on basolateral calcium-activated potassium current I_K(Ca)and cAMP-activated potassium current I_K(cAMP)and its mechanism in treatment of secretory diarrhea.Methods The intact colonic crypt cells were isolated with EDTA solution.The effects of berberine(50,100,500?mol/L)on I_K(Ca)and I_K(cAMP)were detected by patch clamp technique under the conventional whole cell patch clamp mode.The solution of PSS was served as control.Results Berberine could significantly inhibite I_K(Ca)and I_K(cAMP)of rat colonic crypt cells(both P

Objective To investigate the MRI imaging features, and pathologic basis of the orthotropic transplantation nude mouse model with human pancreatic cancer. Methods Adopting Siemens Magnetom Trio Tim 3.0 Tesla superconductive MRI and breast coil was used to examine 30 orthotropic transplantation nude mouse models of the human pancreatic cancer, these mouse were sampled to acquire TSE-T1 -weighted and T2-weighted transverse axial images. Intraperitoneal injection of Gd DTP A was used to perform continuous dynamic enhancement scanning. Signal intensities of tumors were measured in plain scanning and each phase' s enhancement scanning images, respectively. Intensification rates of tumors were calculated. Pathologic examination of tumors was performed to be compared with the findings of MRI scanning. Results The successful rate of inoculation of 30 nude mice was 100%. The histological findings were comparable with poorly differentiated adenocarcinoma. Compared with signal of adjacent tissues, the MRI findings of the tumors were uniformly slightly hypointensity (90% , 27/30) , or unevenly (10% , 3/30) on TSE-T1WI; uniformly (20% , 6/30) or unevenly (80% , 24/30) hyperintensity with equal or more hyper signal spots on TSE-T2WI. Signal intensities on plain scanning was 228.35 ±11.71, and 1.5,3,6,9, 12 min after enhancement scanning, thesignal intensities were 258.20 ± 11.17, 301.75 ± 17.09, 358.65 ±25.13, 480.05 ± 19.01, 558.35 ± 40.49, which were significantly higher than those in plain scanning (P <0.01). The intensification rate of every phase was 0.13 ±0.04, 0.35 ±0.11, 0.56 ±0.10, 1.10 ±0.10, 1.45 ±0.18, and the difference among these phases was statistically significant (P <0.01). The significantly intensified area was the area where the tumor cells grew actively with rich capillaries; the central area without intensification was the area of necrotic tissue and/or densely packed tumor cells and few capillaries. Conclusions High resolution MRI imaging of implanted tumors can be obtained by intraperitoneal injection of contrast, and it is consistent with pathologic examinations.

Objective: To observe the influence on IL-1β and IL-2 in rat models with rheumatoid arthritis after moxibustion on Shenshu (BL 23) and Zusanli (ST 36) points, and to discuss the mechanism of moxibustion. Methods: Fifty male Wistar rats were divided randomly into 5 groups,control group, model group, drug group, moxibustion group, and laser group, 10 for each. Four groups except the normal group were built on the model of rheumatoid arthritis. The changes of body weight and plantar circumference were measured and the level of IL-1β、 IL-2 in sera were examined by ELISA. Results: Compared with the model group, the weight and plantar circumference of rats in the moxibustion group were improved significantly after treatment (P＜0.01), and the improvement of plantar circumference also had significant differences compared with the drug group and the laser group (P＜0.05). The level of IL- 1β、 IL-2 in sera were down regulated in the moxibustion group and the laser group, which had statistical differences compared with the model group (P＜0.05), but no statistical differences were found when comparing with the drug group. Conclusion: Moxibustion obviously improves the toe tumefaction of the rats with rheumatoid arthritis, which is better than CO2 laser of 10.6μm. On the aspect of decreasing the amount of IL-1β、 IL-2, CO2 laser of 10.6 μm is similar with moxibustion.

Objective To detect the efficiency and function of NK cell differentiation from human umbilical cord he?matopoietic stem cells (HSCs) in vitro. Methods CD34+hematopoietic stem cells were isolated from human umbilical cord blood, and inoculated into SCGM medium containing 20 μg/L FMS like tyrosine kinase 3 ligand (Flt-3L), stem cell fac?tor (SCF), interleukin (IL)-7, IL-15 and IL-21. And CD34+HSCs were differentiated into NK cells in directional inducing. The growth state of cells was observed. The expressions of CD56, NKG2D, NKp46, CD3, CD19 and CD34 were detected by flow cytometry in the differentiation of 7, 14, 21 and 28 d. In the differentiation of 21 d and 28 d, the differentiation cells were used as effector cells, and K562 cells as target cells. The ratios of effector cells and target cells were 8∶1, 4∶1, 2∶1 and 1∶1. The killing activity of the differentiated cells was detected by lactate dehydrogenase (LDH) cell toxicity assay and 7AAD/CFSE labeling method. Results CD34+HSCs derived from human umbilical cord blood can proliferate in vitro under appropriate condition. There were no significant differences in the expression of CD3 and CD19 between different differentia?tion stages (7, 14, 21 and 28 d, P>0.05). The expressions of CD56, NKG2D and NKp46 were significantly different (P<0.05), and the ultimate expression amount was (72.57±1.60)%, (32.83±1.29)%and (29.53±2.40)%. The expression of CD34 decreased gradually, and the lowest was (12.13 ± 2.01)%. The maximum killing activity detected by LDH cell toxicity assay and 7AAD/CFSE labeling method reached(49.91±2.76)%and (40.87±1.12)%.The killing activity of NK cells was decreased in the order of 8∶1, 4∶1, 2∶1 and 1∶1 groups (P<0.05). There was no significant difference in the killing activity between NK cells of 28 d and 21 d. Conclusion Human umbilical cord hematopoietic stem cells can differentiate into NK cells un? der appropriate conditions in vitro, and the NK cells induced from differentiation are with killing activity.

Objective To investigate the resistance of clinical isolates from Yuebei People’s Hospital so as to provide the ref-erence for clinical use of antibiotics.Methods To comprehensively analyze the drug resistance,AST was performed with K-B or MIC method to 2 527 strains of clinical isolates and the data were analyzed by WHONET 5.4 and SPSS19.0 softwares according to the breakpoints of CLSI 2012 standard.Results MRSA accounted for 30.9% in Staphylococcus aureus iso-lates,MRCNS accounted for 76.2% incoagulase negative Staphylococcus isolates ,no detection of vancomycin or linezolid re-sistant strains.The antimicrobial drug resistance of Enterococcus faecium was significantly higher than that of Enterococcus faecalis ,no detection of glycopeptide and linezolid resistant strains in Enterococcus faecalis ,but one linezolid resistant strains and two teicoplanin resistant strains in Enterococcus faecalis .Enterobacteriaceae remain highly sensitive to carbapen-em antibiotics,ESBLs produced strains in Escherichia coli ,Klebsiella pneumoniae were 43.9% and 37.5% respectively,five polymyxin B resistant strains were detected in Pseudomonas aeruginosa ,and 63.7% of MDRO rate in Acinetobacter bau-mannii .Conclusion Drug resistance of clinical pathogenic bacteria remain seriously in hospital,clinical application of antibi-otics should be reasonable based on the result of drug sensitivity.

In order to solve the adhesion and the softening problems of traditional Chinese medicine extract during spray drying, a new method of adding dehumidified air into spray drying process was proposed, and the storage stability conditions of extract powder could be predicted. Kouyanqing extract was taken as model drug to investigate on the wet air (RH = 70%) and dry air conditions of spray drying. Under the dry air condition, the influence of the spray drying result with different air compression ratio and the spray-dried powder properties (extract powder recovery rate, adhesion percentage, water content, angle of repose, compression ratio, particle size and distribution) with 100, 110, 120, 130, 140 °C inlet temperature were studied. The hygroscopic investigation and Tg value with different moisture content of ideal powder were determined. The water activity-equilibrium moisture content (aw-EMC) and the equilibrium moisture content-Tg (EMC-Tg) relationships were fitted by GAB equation and Gordon-Taylor model respectively, and the state diagram of kouyanqing powder was obtained to guide the rational storage conditions. The study found that in the condition of dry air, the extract powder water content decreased with the increase of air compression ratio and the spray drying effect with air compression ratio of 100% was the best performance; in the condition of wet air, the extract powder with high water content and low yield, and the value were 4.26% and 16.73 °C, while, in the dry air condition the values were 2.43% and 24.86 °C with the same other instru- ment parameters. From the analysis of kouyanqing powder state diagram, in order to keep the stability, the critical water content of 3.42% and the critical water content of 0.188. As the water decreased Tg value of extract powder is the major problem of causing adhesion and softening during spray drying, it is meaningful to aid dehumidified air during the process.
Drug Stability ; Drugs, Chinese Herbal ; chemistry ; Humidity ; Medicine, Chinese Traditional ; Plant Extracts ; chemistry ; Powders ; Temperature

Objective To investigate the clinical value of neutrophil-lymphocyte ratio (NLR) in postmenopausal patients with type 2 diabetes mellitus (T2DM). Methods A total of 128 newly diagnosed T2DM female patients were randomly recruited from the Zhujiang Hospital of Southern Medical University from March to September 2015. According to the physiological state, the patients were divided into menopausal group (n=66) and non-menopausal group (n=62). Fifty-six healthy females were chosen as the control group. The values of blood pressure, blood lipid, fasting plasma glucose (FPG), fasting insulin (FINS) and white blood count (WBC), neutrophil count, percentage of neutrophils,lymphocytes count, and percentage of lymphocytes were detected and compared between three groups. The NLR and the HOMA insulin resistance index (HOMA-IR) were calculated. Results Age, systolic blood pressure (SBP), triglyceride (TG), FINS, percentage of neutrophil, NLR, HOMA-IR were significantly higher in menopause group than those of control group and non-menopause group (P<0.05). There were no significant differences in diastolic blood pressure (DBP) and FPG between menopause group and non-menopause group, but both were significantly higher than those of control group (P < 0.05). There were no significant differences in total cholesterol (TC), high density lipoprotein cholesterol (HDL-C), low density lipoprotein cholesterol (LDL-C), WBC and HbA1c between three groups (P>0.05). There was no linear correlation between NLR and HOMA-IR (rs=0.015, P > 0.05), HbA1c (r=0.030, P > 0.05). Conclusion NLR is of a certain significance in the assessment of inflammatory status and IR levels in postmenopausal women with T2DM, which may be related to the changes of autonomic nervous system.

Carcinoma, Non-Small-Cell Lung ; genetics ; Exons ; genetics ; Genes, erbB-1 ; genetics ; Humans ; Lung Neoplasms ; pathology

OBJECTIVETo investigate the expression profile of interleuki-1β (IL-1β) in rat myocardium at different time points during hypoxia/reoxygenation(H/R)transition.

METHODSThe isolated Langendorff perfused rat heart model was established.Forty SD rats were randomly divided into sham group (A group) and hypoxia/reoxygenation group (H/R group). The H/R group rats were subdivided into H/R 0.5 h group(B group), H/R 1 h group(C group), H/R 2 h group(D group)according to reoxygenation time. The left ventricular development pressure(LVDP), maximal rates of increase/decrease of the left ventricular pressure(±dp/dtmax) were continuously recorded. The concentration of interleukin-1β(IL-lβ) and creatine kinase-MB (CK-MB) in myocardium was measured by ELISA. The mRNA expression of IL-lβ in myocardium was determined by RT-PCR. Microstructure of myocardium was observed under light microscopy.

RESULTSThe value of LVDP and ±dp/dtmax in hypoxia/reoxygenation group rat were significantly lower than that in sham group(P < 0.05). The expression of IL-lβ and CK-MB at protein level and the expression of IL-1β at mRNA level in hypoxia /reoxygenation group were higher than that in sham group(P < 0. 05). There were significant differences of the above parameters among H/R 0.5 h, 1 h, 2 h group(P <0.05). The concentration of IL-1β and CK-MB, the mRNA expression of IL-1β were higher in H/R 2 h group than that of other groups(P < 0.05).

CONCLUSIONThe high expression of IL-Iβ in myocardium after myocardial hypoxia /reoxygenation in rats might lead to. ischemia/reperfusion injury.

Animals ; Creatine Kinase, MB Form ; metabolism ; Disease Models, Animal ; Hypoxia ; metabolism ; pathology ; Interleukin-1beta ; metabolism ; Myocardial Ischemia ; metabolism ; Myocardium ; metabolism ; pathology ; Rats ; Rats, Sprague-Dawley