Objective:To establish a GC method for the determination of metacresol. Methods:The separation was performed on an Agilent DB-225 MS column (30 m × 0. 25 mm,0. 25 μm). The initial column temperature was set at 90℃,maintained 10 min, raised to120℃ with a rate of 2℃·min-1 ,and then raised to 150℃ with a rate of 10℃·min-1 and maintained for 5 min. The inlet temperature was 200℃. The detector was a flame ionization detector (FID) and the temperature was 250℃. The flow rate was 1. 8 ml ·min-1 split ratio was 1∶30 and the carrier gas was nitrogen. Results:The linear range was 0. 6-1. 8 mg·ml-1 . The average recovery was 96. 0% (RSD=2. 6%,n=9). The content of 3 batches of the samples was 99. 3%, 98. 7% and 98. 4%, respectively. Conclu-sion:The established quantitative analysis method is applicable in the quality control of metacresol.

Objective To observe the characteristics of images of fundus fluorescein angiography (FFA) and indocyanine green angiography (ICGA) in patients with acute retinal necrosis syndrome (ARNS), and investigate the applied value of FFA and ICGA in clinical diagnosis. Method The data of the ocular fundus, FFA and ICGA of 20 patients (28 eyes) with ARNS were retrospectively analyzed. Results The images of FFA indicated hyperfluorescence of optic disc in 24 eyes (85.71%) at the late phase; widespread retinal vascular occlusion at the peripheral focus in 23 eyes (82.14%) with some occlusive vascular shadow and the fluorescein in some white-line-like blood vessels; fluorescent leakage at the junction of normal and abnormal retina in 22 eyes (78.57%); retinal detachment in 20 eyes (71 42%), including 9 with retinal hole (45% of the patients retinal detachment); and macular cystoid edema in 8 eyes (28 57%). The images of ICGA showed hyperfluorescence of optic disc in 8 eyes (28 57%) including 5 with dotted staining at the optic disc at the late phase; unclear choroidal vasculature in the peripheral focus in 20 eyes (71.42%); and choriodal scattered hypofluorescent patch at the focus area in 19 eyes (67.85%). At the late phase of ICGA, some intravascular emboli and segments of retinal vascular occlusion were clearly demonstrated. Conclusion The main manifestations of patients with ARNS in the images of FFA were hyperfluorescence of optic disc and retinal vascular occlusion; and unclear choroidal vessels and scattered hypofluorescent patch at the focus area.Combination of FFA and ICGA is helpful to understand the extent of the lesions and the relations between choroids and retina, which has great significance in diagnosing ARNS.

Objective To explore the effect of relaxation therapy on rehabilitation patients with functional dyspepsia.Methods 112 cases with functional dyspepsia were randomly divided into test group(n=56) and control group(n=56).Relaxation trains was adopted in test group,usual nursing care was adopted to the patients in both groups.The therapeutic effects and relapse rate were observed in two groups. Results There were no significant differences of clinical curative efficacy in two groups first-visit and less than six-month pathogenesis patients,but compared with the control group,the cure efficacy of recurrent-attack patients and over six-month-pathogenesis patients were significantly lower in test group,and the relapse rate in control group is higher than that in test group. Conclusion The relaxation therapy can promote the rehabilitation in functional dyspepsia patients of recurrent attack and over-six-month pathogenesis,and decrease the relapse rate.

Objective\ To study the influence of long-term quality of life in MHD patient after their family numbers have received home-nursing education Methods 49 cases of MHD were divided into two groups randomly: the observe groups(n=24),and the control groups(n=25).Both groups were received routing treatment with health education,while the family members of observation groups were also guided with home-nursing education.After one and five years′ treatment,the index of quality of life were compared with SF-36 respectively. Results The quality of life in observation groups was significant higher than that of control group(after one year P

Objective To observe the effectiveness of routine nursing plus foot exercise on the peripheral neuropathy and plantar pressure in patients with diabetic foot.Methods Toally 100 patients with diabetic foot were randomly divided into 2 groups.On the basis of routine nursing care,50 patients in the observation group were given foot exercises for 12 weeks,50 patients in the control group were given routine nursing only.Before and after intervention,the Toronto clinical scoring system (TCSS),left and right foot peak pressure variation were observed.Results Before intervention,there was no statistical difference between the two groups' TCSS sore and the peak pressure of left and right foot (P ＞0.05).After intervention,the observation group's average total score of TCSS was lower,there was significantly different between two groups (P＜ 0.001).The peak pressure of left and right foot is lower in the observation group,the difference was statistically significant (P ＜ 0.05).Conclusion Foot exercises is worthy of clinical promotion,because it can improve the peripheral neuropathy of patients with diabetic foot,so as to reduce the plantar pressure,reduce the pain of patients and improve their life quality.

Objective To investigate the cytotoxicity of vascular endothelial growth factor (VEGF) siRNA combined with fusion suicide gene yCDglyTK on human gastric cancer cell line in vitro.MethodsThe gastric cancer cell line SGC7901 was transfeeted with blank plasmid pcDNA3.1 (-) null [pcDNA3.1 (-) group], or VEGF-siRNA expression plasmid pGenesil-shVEGF (SGC7901/shVEGF group),or fusion suicide gene plasmid pcDNA3.1 (-)CV-yCDglyTK (SGC7901/CDTK group),or combined gene plasmid pcDNA3.1 (-)shVEGF-yCDglyTK (SGC7901//shVEGF-CDTK group) with calcium phosphate nanoparticles (CPNPs).Un-transfected gastric cells were set as control group.The stable transfected cells were selected by G418.The target gene expression was verified by RT-PCR and Western-blot.After given prodrug 5-fluorocytosine (5-FC), the biologic characters variation, apoptotic morphology and apoptotic rate of cells in each group were observed through cell growth curve by MTT assays, by-stander effect, Hoechst 33258 staining and flow cytometry.The data was analyzed with SPSS 13.0 software and multiple groups’ comparison was analyzed with LSD test.ResultsFour gastric cancer cells lines transfected with different plasmids were successfully established.The expression of gene yCDglyTK was detected both in SGC7901/CDTK cells and SGC7901/shVEGF-CDTK cells.By MTT assays, the cell growth curve indicated that the A570 value of SGC7901/shVEGF cells, SGC7901/CDTK cells and SGC7901/shVEGF-CDTK cells decreased significantly compared with that of SGC7901 and SGC7901/null cells after a 24-hour 5-FC treatment (P＜0.01).When the percentage of stable gene trasfected SGC7901 cells was 60％, 80％and 100％, the cell relative viability was 13.09％±2.40％, 9.74％±2.83％ and 5.68％±1.03％,respectively. A large number of cells in SGC7901/CDTK and SGC7901/shVEGF-CDTK group appeared typical apoptotic morphology under fluorescence microscope.The result of flow cytometry showed that the apoptosis rates in SGC7901/shVEG group、 SGC7901/CDTK group and SGC7901/shVEGF-CDTK group were 16.40％ ±4.68％, 57.63％ ± 4.96％ and 69.07％ ± 4.69％,respectively, and there were significant differences compared with control (P＜0.01).Conclusion VEGF siRNA combined with suicide gene can effectively kill gastric cancer cell line SGC7901.Apoptosis induction may be one of the important mechanisms of killing tumor cells.

Objective:To explore the effect of nursing team leader rotation in ICU nursing team, so as to provide reference for optimizing the allocation of nursing human resources, promoting the cooperation of nursing team and improving the quality of nursing care.Methods:The ICU nursing team leader rotation was implemented from October 2018 to June 2019, semi-structured interview method was used to understand the feeling and experience of medical staff in the department on team cooperation, workflow, nursing quality and other aspects after the implementation of the rotation, so as to evaluate the effectiveness.Results:According to the results of interviewing, by implementing the nursing team leader after rotation, most staff feel the improvement of care team, as well as the enthusiasm of learn and work. The new leader′ ability is got promoted, former leader feeled working pressure eased, some medical workers think that nursing quality was not affected, and there performance appraisal was reduced in an acceptable range.Conclusion:The implementation of the nursing team leader rotation may be able to improve teamwork, work enthusiasm,and the ability of overall leader team, alleviate the workload, future studies could evaluate its specific effect by quantitative indicators, and discusses the impact on the quality of care and patient outcomes, to further explore the feasibility and effectiveness of the system.

Objective:To compare the wound healing time, Surgical site infection (SSI) rate and other postoperative outcomes between the gunsight closure and purse-string closure technique in loop stoma closure.Methods:Between November 2013 and December 2017, a total of 143 patients who underwent gunsight stoma reversal were included in this multicenter prospective randomized controlled trial. The patients were randomized to undergo gunsight (gunsight group, n=72) or purse-string closure technique (purse-string group, n=71). The primary endpoint was wound healing time. The second endpoints were the incidence of SSI, morbidity, and patient satisfaction. Statistical analysis between groups was performed using the t-test, repeated measures analysis of variance, Mann-Whitney U test, χ 2 test or Fisher′s exact test. Results:There were 45 males and 27 females with age of 67 (11) (M( Q R)) years in gunsight group, 42 males and 29 females with age of 65 (20) years in purse-string group. The body mass index, American Society of Anesthesiologist classification, comorbidities, primary diagnosis, the type of ostomy, intraoperative blood loss, perioperative complications, postoperative hospital stay, hospitalization cost, SSI rate and incisional hernia (stoma site) between the 2 groups were not significantly different ( P>0.05). Although had a statistically longer operating time (80(10) minutes vs. 70(10) minutes, Z=-2.381, P=0.017), patients who underwent gunsight procedure and a significantly shorter wound healing time (17(2) days vs. 25(4) days, Z=-10.199, P<0.01), higher patient satisfaction score with regards to wound healing time (3(1) vs. 3(1), Z=-4.526, P<0.01), and higher total patient satisfaction score (25(3) vs. 25(3), Z=-2.529, P=0.011) compared with those who underwent purse-string procedure. Conclusions:The gunsight and purse-string techniques are effective procedures for stoma reversal and both have low SSI rate. The gunsight technique is associated with shorter wound healing time, higher levels of patient satisfaction compared with purse-string technique, and is recommended as the closure technique of choice.

Objective:To compare the wound healing time, Surgical site infection (SSI) rate and other postoperative outcomes between the gunsight closure and purse-string closure technique in loop stoma closure.Methods:Between November 2013 and December 2017, a total of 143 patients who underwent gunsight stoma reversal were included in this multicenter prospective randomized controlled trial. The patients were randomized to undergo gunsight (gunsight group, n=72) or purse-string closure technique (purse-string group, n=71). The primary endpoint was wound healing time. The second endpoints were the incidence of SSI, morbidity, and patient satisfaction. Statistical analysis between groups was performed using the t-test, repeated measures analysis of variance, Mann-Whitney U test, χ 2 test or Fisher′s exact test. Results:There were 45 males and 27 females with age of 67 (11) (M( Q R)) years in gunsight group, 42 males and 29 females with age of 65 (20) years in purse-string group. The body mass index, American Society of Anesthesiologist classification, comorbidities, primary diagnosis, the type of ostomy, intraoperative blood loss, perioperative complications, postoperative hospital stay, hospitalization cost, SSI rate and incisional hernia (stoma site) between the 2 groups were not significantly different ( P>0.05). Although had a statistically longer operating time (80(10) minutes vs. 70(10) minutes, Z=-2.381, P=0.017), patients who underwent gunsight procedure and a significantly shorter wound healing time (17(2) days vs. 25(4) days, Z=-10.199, P<0.01), higher patient satisfaction score with regards to wound healing time (3(1) vs. 3(1), Z=-4.526, P<0.01), and higher total patient satisfaction score (25(3) vs. 25(3), Z=-2.529, P=0.011) compared with those who underwent purse-string procedure. Conclusions:The gunsight and purse-string techniques are effective procedures for stoma reversal and both have low SSI rate. The gunsight technique is associated with shorter wound healing time, higher levels of patient satisfaction compared with purse-string technique, and is recommended as the closure technique of choice.

Objective To explore the immune mechanism of Tibetan medicine Twelve Flavors Yishou San in intervening with acute lung injury.Methods Construct a lipopolysaccharide(LPS)-induced acute lung injury rat model and treated it with Twelve Flavors Yishou San.The intervention effect of Twelve Flavors Yishou San on LPS induced acute lung injury was determined through lung pathological sections and blood gas analysis.Enzyme linked immunosorbent assay(ELISA)was used to detect the expression of pro-inflammatory cytokine tumor necrosis factor-α(TNF-α)and anti-inflammatory cytokine interleukin(IL)-10 in rat's bronchoalveolar lavage fluid.Flow cytometry was used to detect changes in immune cells in rat's bronchoalveolar lavage fluid,lungs,spleen and peripheral blood.Results LPS successfully induced an acute lung injury model in rats,and Twelve Flavors Yishou San could alleviate the exudation of inflammatory cells,elevated oxygen partial pressure in LPS induced acute lung injury to varying degrees.The ELISA results of rat bronchoalveolar lavage fluid showed that compared with normal control group,the TNF-α level in the bronchoalveolar lavage fluid of rats with acute lung injury was increased and the IL-10 level was decreased,while the Twelve Flavors Yishou San could alleviate this effect.The results of flow cytometry showed that Twelve Flavors Yishou San could significantly reduce neutrophil infiltration in rat bronchoalveolar lavage fluid,but had no significant effect on macrophages and adaptive immune response.Conclusion Twelve Flavors Yishou San can alleviate LPS induced acute lung injury by inhibiting neutrophil infiltration,providing an important experimental basis for fully understanding the therapeutic mechanism of Twelve Flavors Yishou San.