Objective To evaluate the effect of mechanical stretch preconditioning on pathological stretch-induced activation of γ-aminobutyric acid (GABA) signaling pathway in human type Ⅱ alveolar epithelial cells (AEC Ⅱ).Methods AEC Ⅱ cell line (A549 cells) culturedin vitro were divided into control group (group C), pathological stretch group (group P1) and mechanical stretch preconditioning group (group P2). In group C, A549 cells were cultured routinely. In group P1, A549 cells were exposed to 20% cyclic stretch for 6 hours. In group P2, A549 cells were exposed to 5% cyclic stretch for 60 minutes, and then exposed to 20% cyclic stretch for 6 hours. The cells were harvested for determination of the cell viability by methyl thiazolyl tetrazolium assay, lactate dehydrogeuase (LDH) release was determined by colorimetric method, the levels of interleukin (IL-1β and IL-6) and tumor necrosis factor-α (TNF-α) were determined by enzyme linked immunosorbent assay (ELISA), the mRNA expressions of IL-1β, IL-6 and TNF-α were determined by reverse transcription-polymerase chain reaction (RT-PCR), and the protein expressions of glutamic acid decarboxylase (GAD) and γ-aminobutyric acid A receptor (GABAAR) were determined by Western Blot.Results Compared with group C, the cell viability of group P1 was significantlydecreased (A value: 0.196± 0.071 vs. 0.886±0.107), the release rate of LDH was significantly increased [(12.3±2.4)% vs. (1.9±0.5)%]; the contents and mRNA expressions of IL-1β, IL-6 and TNF-α in cell culture medium were significantly increased [IL-1β (ng/L): 138.6±19.7 vs. 32.7±7.4, IL-6 (ng/L): 196.5±31.7 vs. 55.4±13.8, TNF-α (ng/L): 111.3±21.8 vs. 20.8±7.6; IL-1β mRNA (2-ΔΔCT): 2.79±0.44 vs. 0.83±0.12, IL-6 mRNA (2-ΔΔCT): 1.99±0.25 vs. 0.56±0.11, TNF-α mRNA (2-ΔΔCT): 2.54±0.37 vs. 0.72±0.09]; the protein expressions of GAD and GABAAR were significantly decreased [GAD (gray value): 0.38±0.12 vs. 1.75±0.45, GABAAR (gray value): 0.29±0.09 vs. 1.68±0.39; allP < 0.05]. Compared with group P1, the cell viability of group P2 was significantly increased (A value: 0.523±0.132 vs. 0.196±0.071),the release rate of LDH was significantly decreased [(6.9±1.7)% vs. (12.3±2.4)%]; the contents and mRNA expressions of IL-1β, IL-6 and TNF-α in cell culture medium were significantly decreased [IL-1β (ng/L): 79.2±11.6 vs. 138.6±19.7, IL-6 (ng/L): 89.6±15.6 vs. 196.5±31.7, TNF-α (ng/L): 55.9±11.4 vs. 111.3±21.8; IL-1β mRNA (2-ΔΔCT): 1.92±0.36 vs. 2.79±0.44, IL-6 mRNA (2-ΔΔCT): 1.09±0.18 vs. 1.99±0.25, TNF-α mRNA (2-ΔΔCT): 1.77±0.25 vs. 2.54±0.37]; the protein expressions of GAD and GABAAR were significantly increased [GAD (gray value): 1.26±0.33 vs. 0.38±0.12, GABAAR (gray value): 1.04±0.15 vs. 0.29±0.09; allP < 0.05]. Conclusion The mechanism by which mechanical stretch preconditioning attenuates pathological stretch-induced injury in human AECⅡ is related to the activation of GABA signaling pathway.

Objective To establish and test the reliability and validity of the disease related psychological pressure scale of pregnant women with chronic HBV infection,so as to provide mental stress assessment tool for the pregnant women.Methods Item pool was developed after the interview and comprehensively retrieved literatures,then after expert review and rebuilt,the scale items were fixed.Totals of 368 pregnant women with chronic HBV infection disease were investigated and the reliability and validity of scale were test.Results The scale had 5 factors and 24 items,and the correlation coefficient between each factor score and total score was 0.712 - 0.894.The correlation coefficient among each factor was 0.409 - 0.631 which was significantly lower than that between each factor score and total score ( P ＜ 0.01 ).The cumulative contribution rate of 5 factors was 64.055％,and tes-retest reliability of 5 factors was 0.856,0.887,0.828,0.813.The Cronbach' s α of internal consistency of 5 factors was 0.788 - 0.865,and the Cronbach' s α of scale was 0.932.Conclusions The scale has good reliability and validity,and can be used for measuring the disease related pregnancy psychological pressure for chronic HBV infection pregnant women.

OBJECTIVE To enhance the rational usage of antibiotics by comprehensive interventional measures in clinics.METHODS Several interventional measures have been adopted in our hospital since January 2001: to(establish) expert team on antibiotics usage and administration consultation;constitute antibiotics use criteria(suitable) for each clinical specialty;train and examine the usage of antibiotics;censor the distribution of pathogen and drug-resistance variance.Then 10% of the discharged medical records in 2000,2002 and 2004 were drawn out respectively to analyze the usage of antibiotics and the isolation of pathogen from nosocomial infection cases.(RESULTS) The proportion of the patients with prophylactic and remedial indications was increased remarkably((P

Objective This study was to assess the three-dimensional gross tumor volume(GTV)motion of lung cancer caused by respiration using four-dimensional computed tomography(4DCT),and to analyze the influenee factors.Methotis Four-DCT scans of 22 lung focuses in 21 patients with lung cancer were analyzed.The gross tumor volume was contoured in all 10 respiration phases of 4DCT scans.The changes in volume of GTV,the 3D motion of the centroid,boundary of GTV and the 3D spatial motion vectors were calculated and the irdluenee factors were analyzed.Results The average change in volume of GTV was+14.3%(0.2%.42.5%)/-8.4%(0.4%-38.6%),the average movement amplitude of GTV centroid and GTV boundary were(0.18±0.12)cm,(0.20±0.16)cm,(0.53±0.59)cm and(0.42±0.23)cm,(0.41±0.22)cm,(0.57±0.70)cm in medio-lateral,vertro-dorsal,cranio-caudal(CC) direction,respectively.The CC movement was larger than other directions(Z=-2.12,P=0.034;Z:-2.10,P=0.035),and no significant difference was observed in 3D motion of GTV boundary(Z=-0.81.P=0.417;Z=-0.86,0.391).The CC motion of GTV eentroid in lower lobe was larger than that in upper lobe[(0.87±0.64)and(0.35±0.49)cm,(t=-2.12,P=0.047)],and no significant difference was found in other directions[(0.23±0.10)and(0.19±0.18)em(t=-0.49,P=0.629),(0.21±0.13)and(0.17±0.11)cm(t=0.76,P=0.460)].There was no correlation of the 3D movement and 3D spatial motion vector of GTV to the volume of GTV(r=-0.306,-0.062,-0.279,-0.300;P=0.189,0.796.0.234,0.199).Conclusions GTV motion of patients with lung cancer is individual,the CC movement is the moat obvious,using 4DCT to assess is comparatively accurate.The motion amplitude of lower lobe focuses is larger.No significant correlation of the GTV motion to the volume was observed.Larger sample study is needed to analyze the influence of adjacency to the GTV motion.

Female ; Gastroenteritis ; complications ; Humans ; Infant ; Male ; Nitric Oxide ; physiology ; Rotavirus Infections ; complications ; Seizures ; etiology

Objective To evaluate the accuracy of variation of the end-tidal pressure of carbon dioxide (△PETCO2) in predicting the fluid responsiveness in patients undergoing resection of gastrointestinal tumor.Methods Forty-six patients of both sexes,aged 40-64 yr,with body mass index of 20-24 kg/m2,of American Society of Anesthesiologists physical status Ⅱ or Ⅲ,undergoing elective resection of gastrointestinal tumor with general anesthesia,were enrolled in the study.When the change in mean arterial pressure was less than 10％ within 5 min after anesthesia induction,250 ml Ringer's solution was rapidly infused over 10 min via the peripheral vein.Increase in cardiac index after volume expansion ≥ 15％ was considered to be a positive response.The receiver operating characteristic curve for △PETCO2 in determining fluid responsiveness was drawn.Results The results of receiver operating characteristic curve analysis showed that the area under the curve for △PETCO2 in determining fluid responsiveness (95％ confidence interval) was 0.826 (0.730-0.942,P＜0.05),the critical value 21.9％,sensitivity 76.5％,specificity 90.9％.Conclusion △PETCO2 can accurately predict the fluid responsiveness in patients undergoing resection of gastrointestinal tumor.

OBJECTIVETo observe the effect of Gengnianchun Recipe (GNC) on bone mineral density (BMD), bone biomechanical parameters and serum lipid level in the bilaterally ovariectomized (OVX) rats and to explore the prophylactic and therapeutic action of GNC on ovariectomy induced osteoporosis and hyperlipidemia.

METHODSOVX SD rats, 10 - 12 months old, were divided into different groups and fed with GNC 2 g/d, GNC 1 g/d and Nilestriol 0.125 mg/week, respectively for 4 months to observe the change of BMD and bone biomechanical parameters of the lumbar vertebrae, and the serum levels of total cholesterol (TC), triglyceride (TG), high-density lipoprotein cholesterol (HDL-C) and low-density lipoprotein cholesterol (LDL-C), and to compare the effect of the two drugs on the morphology of the uterus.

RESULTSThere was marked reduction in BMD and biomechanical parameters in lumbar vertebrae (P < 0.01) and increase of serum TC and LDL-C levels (P < 0.01) in rats after OVX. GNC or Nilestriol significantly improved the decreased BMD and biomechanical parameters of the lumbar vertebrae (P < 0.05 or P < 0.01), and reduced the serum TC and LDL-C levels (P < 0.01). In the Nilestriol group, the wet weight of uterus got increased obviously (P < 0.01), the number of uterine glands increased, uterine columnar epithelium thickened, and the mitotic figures in the epithelial stroma and myointimal cells augmented. But no such effect in wet weight and morphology of uterus was found in the GNC group.

CONCLUSIONGNC could increase the BMD and biomechanical parameters of the lumbar vertebrae, reduce the serum TC and LDL-C levels, yet produce no adverse reaction in stimulating proliferation and hypertrophy of uterus.

Animals ; Biomechanical Phenomena ; Bone Density ; drug effects ; Bone and Bones ; drug effects ; Cholesterol ; blood ; Cholesterol, HDL ; blood ; Cholesterol, LDL ; blood ; Drugs, Chinese Herbal ; pharmacology ; Estriol ; analogs & derivatives ; pharmacology ; Female ; Lipids ; blood ; Ovariectomy ; Quinestrol ; analogs & derivatives ; Rats ; Rats, Sprague-Dawley ; Triglycerides ; blood ; Uterus ; cytology ; drug effects

Objective To compare the clinical effect of endoscopic thyroidectomy and open thyroidectomy in the treat-ment of benign thyroid diseases. Methods A total of 120 patients with benign thyroid diseases were selected from March 2015 to June 2017 in the Third Affiliated Hospital of Xinxiang Medical University. The patients were divided into endoscopic opera-tion group(n = 62)and open operation group(n = 58)according to the treatment methods. The patients in the open operation group were treated with conventional open thyroidectomy,and the patients in the endoscopic operation group were treated with endoscopic thyroidectomy. The operation time,intraoperative bleeding volume,postoperative drainage volume and hospitalization time were recorded in the two groups;and the intraoperative and postoperative complications were observed. The pain of the pa-tients in the two groups was evaluated by visual analogue scale(VAS)at the time points of 6,12 and 24 hours after operation. The cosmetic satisfaction of the patients in the two groups was evaluated by numerical scoring system(NSS)at the time points of 1 and 3 months after operation. Results The operation time and hospitalization time in the endoscopic operation group were significantly shorter than those in the open operation group(P < 0. 05),and the intraoperative bleeding volume and postopera-tive drainage volume in the endoscopic operation group were significantly lower than those in the open operation group(P <0. 05). The VAS score of pain in the endoscopic operation group was significantly lower than that in the open operation group at the time points of 6,12 and 24 hours after operation(P < 0. 05). The NSS score in the endoscopic operation group was sig-nificantly higher than that in the open operation group at the time points of 1 and 3 months after operation(P < 0. 05). The in-cidence of complications in the endoscopic operation group and the open operation group was 12. 90％(8 / 62)and 39. 66％(23 / 58)respectively,the incidence of complications in the endoscopic operation group was significantly lower than that in the open operation group(χ2 = 11. 210,P < 0. 05). Conclusion Endoscopic thyroidectomy is reliable in the treatment of benign thyroid diseases. It has the advantages of small trauma,short operation time,quick recovery,light postoperative pain,small sur-gical scar and fewer complications and so on.

Aim To detect the expression of miRNA-99b and mTOR in glioma tissues and to investigate the effect of miRNA-99b on the cell invasion ability of hu-man glioma cell line U251. Methods The expres-sions of miRNA-99b and mTOR mRNA in glioma tis-sues and normal brain tissues were detected by real-time PCR. After co-transfection with miRNA-99b mim-ics and wild or mutation type mTOR 3′UTR recombina-tion vector,the specific binding ability of miRNA-99b to 3′-UTR in mTOR gene was examined by luciferase gene reporter system. The expression levels of miRNA-99b,mTOR mRNA and mTOR protein in glioma cell line U251 after transfected with miRNA-99b mimics were measured by real-time PCR and Western blot,re-spectively. The cell invasion was measured by Tran-swell assay. The changes of mTOR and miRNA-99b expression levels in U251 cells after transfection with mTOR PsiCHECK were detected by real-time PCR. The correlation between the expression of miRNA-99b and prognosis was analyzed statistically. Results The expressed level of miRNA-99b was lower, and the ex-pression level of mTOR was higher in the glioma tissues than that in the normal brain tissues. The expression of miRNA-99b was up-regulated, and the expressions of mTOR mRNA and protein were down-regulated in U251 cells after transfection with miRNA-99b mimics. However, the abilities of invasion of U251 cells after transfection with miRNA-99b mimics were inhibited. The relative protein expression levels of mTOR in mTOR PsiCHECK group were significantly different from those in negative control group, but the relative expression levels of miRNA-99b had no signifi-cant difference compared with those in negative control group. Over-expression of mTOR restored the abilities of cell invasion in U251 cells, which was reduced by miRNA-99b. The Kaplan—Meier analysis and Log-Rank Test showed that there were significant differ-ences in overall survival (OS) between the miRNA-99b high-expression and low-expression group. Con-clusions The expression level of miRNA-99b is low in human glioma tissue. miRNA-99b may inhibit the cell invasion activity of glioma cell line U251 in vitro via inhibiting mTOR expression.

Objective To evaluate the changes in activation of γ?aminobutyric acid(GABA)sig?naling pathway during ventilator?induced brain injury in rats. Methods Thirty?six pathogen?free adult male Sprague?Dawley rats, weighing 280-320 g, were divided into 3 groups(n=12 each)using a random number table: low tidal volume group(LV group), ventilation with high tidal volume for 2 h group(HV1 group)and ventilation with high tidal volume for 6 h group(HV2group). The rats were mechanically ven?tilated for 2 h with the tidal volume set at 10 ml∕kg and the respiratory rate 40 breaths∕min in group LV. The rats were mechanically ventilated for 2 h with the tidal volume set at 40 ml∕kg and the respiratory rate 40 breaths∕min in group HV1. The rats were mechanically ventilated for 6 h with the tidal volume set at 40 ml∕kg and the respiratory rate 40 breaths∕min in group HV2. Blood samples were collected at the end of ven?tilation for determination of serum neuron?specific enolase(NSE)and S100β protein concentrations by en?zyme?linked immunosorbent assay. Six rats were then sacrificed and their brains were removed for determi?nation of interleukin?1β(IL?1β)and tumor necrosis factor?α(TNF?α)contents(by enzyme?linked im?munosorbent assay)and expression of glutamic acid decarboxylase(GAD)and GABAAreceptors(by Western blot). Morris water maze test was performed on 2nd day after the end of ventilation. Results Compared with group LV, the serum concentrations of NSE and S100β protein and contents of IL?1β and TNF?α were significantly increased, the expression of GAD and GABAAreceptors was up?regulated, the es?cape latency was prolonged, and the percentage of swimming distance at the original platform was decreased in HV1and HV2groups(P<0.05). Compared with group HV1, the serum concentrations of NSE and S100β protein and contents of IL?1β and TNF?α were significantly increased, the expression of GAD and GABAAreceptors was up?regulated, the escape latency was prolonged, and the percentage of swimming distance at the original platform was decreased in group HV2(P<0.05). Conclusion Activation of GABA signaling pathway is enhanced during ventilator?induced brain injury, which may be involved in the patho?physiological mechanism of ventilator?induced brain injury in rats.