Objective To investigate the correlation between blood pressure variability and variabilities of some feature variables extracted from photoplethysmography (PPG) signal.Methods Continuous blood pressure (BP) and PPG signal were collected simultaneously from 19 healthy subjects under rest and after exercise.Eight feature variables were extracted from the PPG signal.The relationship between the beat-to-beat variability of BP and feature variables extracted from PPG were quantified by calculating Person's correlation coefficient.Results The variability of the amplitude of PPG was highly correlated with systolic BP variability both under rest (0.75) and after exercise (0.76).Meanwhile,the correlations between systolic BP variability and the variability of the time from the trough to the dicrotic north were 0.74(under rest) and 0.78(after exercise).Conclusion The amplitude variability of PPG is highly correlated with systolic BP variability and can be potentially used for monitoring BP variability.

Objective To discuss the effect of competency based education practice teaching model on vocational nursing students with ability training.Methods Totally 96 vocational nursing students were divided into control group from July 2014 to May 2015,receiving routine mentoring teaching mode and totally 99 vocational nursing students were divided into learning group from July 2015 to May 2016,receiving competency based education practice teaching model.Theoretical examination and clinical operation skill test as well as self evaluation of caring ability and transitional nursing ability were conducted to both groups after the course to compare the test scores and the change of their caring ability and transitional nursing ability.SPSS 19.0 was used for statistical analysis,and independent samples t test was used between the two groups.Results The theoretical scores of the nursing students in the experimental group ([93.70 ± 4.27) vs.(88.00 ± 4.83)] and skill test [[95.70 ± 2.49] vs.(91.40 ± 2.87)] were higher than those of the control group;caring ability score [(189.3 ± 13.5) vs.(179.4 ± 10.4)],with the average score of cognitive dimension (51.6 ± 9.8) vs.(50.2 ± 10.3)],the dimension of courage (70.2 ± 6.5) [vs.(65.7 ± 8.4)],average patient dimension (63.4 ± 4.8) vs.5.4)];transitional nursing ability score [(124.95 ± 24.06) vs.(118.18 ± 20.41)],the dimension of knowledge sharing [(38.43 ± 8.22) vs.(36.08 ± 7.23)],average score of attitude dimension [(54.08 ± 10.66)vs.(51.02 ± 9.16)],average score of behavior dimension [(32.43 ± 6.25) vs.(32.43 ± 6.25)],which were all increased compared with the control group,and the difference was statistically significant.Conclusion Competency based education practice teaching mode achieves good teaching effect and it is worth recommending in clinical teaching.

BACKGROUND:Studies have demonstrated that chitosan can indirectly promote the proliferation of fibroblast and the synthesis of collagen, Using chitosan and specific fibroblasts together to construct tissue-engineering materials for tendon repair may be an adequate way to promote healing and prevent adhesion during the healing process.OBJECTIVE: To observe the effect of water soluble chitosan (WSC) on the growth and genotype of 3T3TK fibroblasts.DESIGN: Controlled experiment based on observation.SETTING: Jiujiang University Medical College.MATERIALS: 3T3TK fibroblasts were provided by Cell Bank of Chinese Academy of Sciences. WSC (specification: 60 mesh, 30CPS, Jinan Haidebei Marine Bioengineering Co.,Ltd),DMEM (low sugar) (Gibco Company, USA), fetal bovine serum (FBS, Sijiqing Biological Engineering Institute, Hangzhou), penicillin, streptomycin (Biosharp Company, USA),trypsin (BioEev-Tech Scientific & Technical Co.,Ltd, Beijing).METHODS: This experiment was carried out in the Laboratory for Clinical Application of Biology, Center for Medial Scientific Research, Jiujiang University between November 2004 and April 2006. ①Cells in the log phase were digested with 2.5 g/L trypsin to produce single cell suspension and inoculated into a 96-well culture plate at a density of 6 000 cells /200 μL medium. Five groups were prepared, 5 holes per group. 200 μL cell suspension was added into each well.After 24 hours of cultivation, supernatant was discarded, 200 μL DMEM with 1, 0.1, 0.01 and 0.000 1 g/L chitosan was added respectively in the first four groups. The remaining group was taken as the negative control group, in which 200 μL DMEM medium without chitosan was added. The cell suspension was routinely cultured for 72 hours. The cell viability was measured by CellTilter- GloTM Luminescent Cell Viability Assay according to the manufacturer's protocol. Cells in the log phase were split and inoculated into 24-well culture plates. Four groups were prepared (5 holes per group). 1 mL DMEM medium supplemented with 1, 0.1, 0.01 g/L chitosan was added into the first 3 groups respectively, and the 4th group was set as control group. Hydroxyproline and alkaline phosphatase(ALP) kits were used for detecting the contents of collagen and ALP in the supernatant of fibroblasts.MAIN OUTCOME MEASURES : ①Effect of WSC on viability of fibroblasts cultured in vitro.②Contents of collagen and ALP in the cell culture supernatant of fibroblasts.RESULTS:①Detection results of viability of fibroblasts: There were no significant differences in viability of fibroblasts between each chitosan group and control group (P ＞ 0.05).②Contents of collagen and ALP in the cell culture supernatant of fibroblasts: Hydroxyproline content in the cell culture supernatant of fibroblasts of 1 g/L and 0.1 g/L groups was (7.598±0.770) and (8.366±0.308)mg/L, respectively, which was higher than that of control group [(11.269±0.707)mg/L,P ＜ 0.01]; Collagen content in the 1 g/L and 0.1 g/L groups was(56.703±5.748) and(62.437±2.301)mg/L, respectively, which was lower than that of control group [(84.099±5.280)mg/L,P ＜ 0.01]. With the concentration of chitosan increasing, the collagen content was decreased in a dose-dependent manner. There were no significant differences in ALP activity in the cell culture supernatant between each chitosan group and control group (P ＞0.05).CONCLUSION: WSC does not obviously inhibit the viability of 3T3TK fibroblasts, but can markedly reduce the content of secreted collagen. It is indicated that chitosan can be used as tissue engineering material for tendon repair, and inhibit adhesion formation during tendon repair.

Objective To study the effects of the recipe for activating blood circulation and nourishing qi on expression of mitochondrial ribosomal protein L51 (MRPL51) in CVB3 infection model in rat cardiac myocytes, to reveal the pathogenesis of CVB3 myocarditis in the genetic level, to explore the therapeutic mechanism of the recipe for activating blood circulation and nourishing qi on CVB3 myocarditis, and to confirm the validity of the recipe for activating blood circulation and nourishing qi on CVB3 myocarditis. Methods After establishing CVB3 infection model and treatment model with recipe for activating blood circulation and nourishing qi by culturing neonatal rat myocardial cells, a modified suppression subtractive hybridization (SSH) was used to isolate differentially expressed genes between two model groups. These results were further verified by fluorescence RT-PCR. Results The results of SSH showed that gene expression of the treatment group was lower than that of the CVB3 infection group. The results of fluorescent RT-PCR which agreed with that of SSH displayed the threshold cycle number (Ct) in the treatment group was higher than the virus group. Conclusion Up-regulation of MRPL51 might be one of the pathogenesis of CVB3 myocarditis. The recipe for activating blood circulation and nourishing qi could treat viral myocarditis by regulating the expression of MRPL51.

Objective: To compare the curative efficacy and safety of electro-acupuncture on Jianyu (LI 15) with oral administration of Diclofenac Sodium Sustained-release Capsules in treating shoulder periarthritis. Method: Randomized controlled trials (RCT) were adopted in the study. The patients were randomized into two groups, 30 cases in one group.Electroacupuncture was done on Jianyu (LI 15) 20 min every time in the treatment group,while 75 mg Diclofenac Sodium Sustained-release Capsules were orally administered in the control group. For all the patients in two groups, one treatment course contains 7 days. Then the curative efficacy was evaluated by the efficacy evaluation criteria after two consecutive courses. Result: The total effective rate of treatment group and control group were 93.3% and 56.7% respectively. Conclusion: Electroacupuncture on Jianyu (LI 15) is an effective therapy for shoulder periarthritis and has more significant effect than oral Diclofenac Sodium Sustained-release Capsules.

Objective To investigate serum levels of sialic acids(SA)vs carcino-embryonic antigen(CEA)for the diagnosis of digestive tract cancer.Methods Sixty healthy adults,100 patients with malignant digestive tract tumor and those undergoing radical digestive tract tumor surgery were enrolled in this case-control study.Serum SA level was tested.Serum CEA level was measured by electrochemical luminescence.Sensitivity and specificity of SAvs CEA were calculated.Receiver operating characteristic (ROC)curve and area under the curve(ROC-AUC)were used to evaluate the diagnostic value of SA.Results Serum level of SA of patients with digestive malignant tumors was much higher than the normal controls(P ＜0.01),although serum SA of patients undergoing tumor resection showed no difference with the normal controls(P ＞ 0.05).There was significant difference in SA level between the patients who received surgical therapy or not.The sensitivity and specificity of SA in diagnosing digestive tract cancer was 55.00％ and 93.3％,respectively.The false positive rate was 6.7％ in normal subjects.Conclusion Serum SA or CEA testing may be equally useful in the screening,diagnosis,outcome assessment and followup study of digestive tract cancer.

AIM: To study the expression of Survivin and its relationship to prognosis in human hepatocellular carcinoma(HCC).METHODS: The expression of Survivin protein in 83 cases of HCC and their neighboring noncancerous tissues was detected by immunohistochemistry. The expression of Survivin mRNA in 11 cases of HCC and their neighboring noncancerous tissues was detected by semi-quantitative RT-PCR. RESULTS: Survivin protein expression was detected in 53 of 83 (63.9%) HCC tissues and 21 of 53 (39.6%) corresponding noncancerous tissues. 22 of 53 Survivin-positive HCCs (41.5%) showed punctate nuclear staining in HCC cells, 24 of 53 Survivin-positive HCCs (45.3%) showed cytoplasmic staining in HCC cells and the remaining 7 showed both nuclear and cytoplasmic staining. The positive rates of nuclear Survivin expression in cases of envelope invasion or tumor metastasis were significantly higher than those in cases without envelope invasion or tumor metastasis (P

OBJECTIVETo compare therapeutic effects between surgical and conservative treatment for postoperative lumbar discitis.

METHODSFrom January 2004 to January 2009, 41 patients (17 males and 24 females ranging the age from 37 to 68 years with an average of 53.6 years) with postoperative lumbar discitis were retrospectively studied and divided into two groups. There were 19 patients in operation group, 22 patients in conservative group. Clinical data and features,image data, laboratory examinations, antibiotics utilization, hospital stays and sequelae were recorded and analyzed. Visual analogue scales system (VAS) and Oswestry disability index (ODI) were applied to evaluate therapeutic effects.

RESULTSAll patients were followed up over 2 years. Imaging revealed good bone fusion and no occurrence of discitis. VAS score and ODI at 1 month, 1 year and 2 years were significantly improved after treatment (P < 0.01). While VAS and ODI in operation group at 1 month were improved more than that of conservative group (P < 0.01), and there was no significant difference between two groups at 1 year and 2 years (P > 0.01).

CONCLUSIONSurgical and conservative treatment for postoperative lumbar discitis is effective. Surgical treatment is superior to conservative treatment in a short time, while conservative treatment can achieve long-term satisfactory curative effects.

Adult ; Aged ; Anti-Bacterial Agents ; pharmacology ; therapeutic use ; Discitis ; drug therapy ; surgery ; Female ; Humans ; Lumbar Vertebrae ; drug effects ; surgery ; Male ; Middle Aged ; Postoperative Complications ; drug therapy ; surgery ; Retrospective Studies ; Treatment Outcome

Adult ; Female ; Hemangioma ; pathology ; Humans ; Mesoderm ; pathology ; Placenta ; pathology ; Placenta Diseases ; pathology ; Pregnancy ; Young Adult

OBJECTIVETo investigate the effect of four traditional Chinese medicines distributed along lung meridian, namely Ephedrae Hebra, Zingiberis Rhizoma, Scutellariae Radix and Mori Cortex, on TLR2 and NF-κB expressions in mice with lung heat syndrome, in order to study the intervention effect of the four traditional Chinese medicines (TCMs) on the lung heat syndrome.

METHODOne hundred KM mice were randomly divided into the normal control group, the model group, the Ephedrae Hebra group, the Zingiberis Rhizoma group, the Scutellariae Radix group and the Mori Cortex group (20, 10 g x kg(-1)), nasally dripped with streptococcus pneumoniae to establish the mouse lung heat syndrome model, and then administered with different TCMs. The expressions of TLR2, NF-κB p65 proteins in lung tissues were analyzed by the immunohistochemical method. The expressions of TLR2, NF-κB p65 mRNA were measured by real time PCR.

RESULTCompared with the normal control group, the expressions of TLR2 and NF-κB p65 proteins in lung tissues in the model group were higher (P < 0.01), and the expressions of TLR2 and NF-κB p65 mRNA in lung tissues were up-regulated (P < 0.01 or P < 0.05). Compared with the model group, Ephedrae Hebra high and low dose groups, the Zingiberis Rhizoma low dose group and the Scutellariae Radix high dose group showed decreased expression of TLR2 protein (P < 0.05 or P < 0.01); Ephedrae Hebra high and low dose groups, the Zingiberis Rhizoma low dose group, Scutellariae Radix high and low dose groups and Mori Cortex high and low dose groups showed reduced expression of NF-κB p65 protein (P < 0.05 or P < 0.01). Ephedrae Hebra high and low dose groups, Zingiberis Rhizoma high and low dose groups, Scutellariae Radix high dose group and Mori Cortex high dose group showed down-regulated expression of TLR2 mRNA (P < 0.01 or P < 0.05).

CONCLUSIONEphedrae Hebra, Zingiberis Rhizoma, Scutellariae Radix and Mori Cortex can induce the TLR2/NF-κB inflammatory signal pathways by down-regulating the expressions of TLR2 and NF-κB p65 in protein and mRNA, so as to alleviate the lung tissue injury in mice with lung heat syndrome.

Animals ; Down-Regulation ; drug effects ; Drugs, Chinese Herbal ; classification ; pharmacology ; Female ; Gene Expression ; drug effects ; Immunohistochemistry ; Lung ; drug effects ; metabolism ; microbiology ; Male ; Medicine, Chinese Traditional ; methods ; Meridians ; Mice ; Phytotherapy ; methods ; Plants, Medicinal ; chemistry ; classification ; Pneumonia, Pneumococcal ; drug therapy ; genetics ; metabolism ; Random Allocation ; Reverse Transcriptase Polymerase Chain Reaction ; Scutellaria baicalensis ; chemistry ; Species Specificity ; Syndrome ; Toll-Like Receptor 2 ; genetics ; metabolism ; Transcription Factor RelA ; genetics ; metabolism