A lot of basic and clinical studies have proved that limb remote ischemic preconditioning (RIPre) is a safe and effective means reducing perioperative myocardial reperfusion injury .However ,RIPre possesses specific protec‐tive window .Therefore ,researchers used repeated limb RIPre to prolong the protective window in order to explore a new prevention and rehabilitation measure for cardiovascular diseases .

Background Accurate measurement of corneal refractive parameters plays an important role in the diagnosis of eye diseases,design of refractive surgery and calculation of intraocular lens (IOL) power.Ophtha TOP is a new IOL calculator,so it is necessary to evaluate the repeatability and accuracy of Ophtha TOP in measuring corneal refractive parameters.Objective This study was to evaluate the repeatability of Ophtha TOP in measuring corneal refractive status in normal eyes and determine the agreement of the measuring outcomes between Ophtha TOP and Pentacam in pre-surgery cataract eyes.Methods A reliability evaluation method of diagnosis test was performed from September 2013 to October 2014.Sixty eyes of healthy volunteers aged (30.83 ±8.66) years old were examined in Tianjin Eye Hospital with Ophtha TOP for more than 5 times to evaluate the stability in measuring corneal refractive parameters.Corneal refractive parameters were measured by both Ophtha TOP and Pentacam for more than twice in 30 pre-surgery cataract eyes to assess the agreement with Pentacam.Keratometry and astigmatism parameters were recorded,including the flattest meridian (Kf),steepest meridian (Ks),mean keratometry (Km) and the astigmatism at J0 and J45.Intra-class correlation coefficients (ICC),repeatability (2.77Sw) and coefficient of variation (CoVs) were used to assess the stability of Ophtha TOP,and Bland-Altman graphs were adopted to value the consistency of measuring outcomes between Ophtha TOP and Pentacam.This study complied with Helsinki declaration,and written informed consent was obtained from each patient prior to any medical examination.Results The ICC of Ks,Kf,Km,J0 and J45 by Ophtha TOP were all ≥0.90,and 2.77Sw were all ≤0.36,The CoVs of Kf,Ks,Km by Ophtha TOP were all ≤0.30.The measuring values of Kf,Ks and Km were significantly higher in the Ophtha TOP than those in the Pentacam,with the mean differences (0.18±0.28) D,(0.24±0.29) D and (0.21± 0.26) D,respectively(t =3.48,4.50,4.49,all at P=0.00).The mean difference of the J0 was (0.07±0.21) D and that of the J45 was (-0.02±0.18)D between Ophtha TOP and Pentacam,showing insignificant differences between them (both at P＞0.05).Bland-Altman graphs revealed that the 95％ limit of agreement (LoA) of Kf,Ks and Km between the two methods was-0.37 D to 0.73 D,-0.33 D to 0.81 D and-0.30 D to 0.72 D,respectively,and that of J0 and J45 was-0.34 D to 0.48 D and-0.37 D to 0.33 D,respectively.Conclusions Ophtha TOP shows an excellent repeatability.Compared with Pentacam,Ophtha TOP presents a good consistence for measurement of the corneal astigmatism and moderate consistence for corneal curvature.

Inhibitor of growth 2 (INC2 ) is a member of INC family, and cooperates with p53 in regulating cell cycle, apoptosis, and aging. It can also facilitate chromatin remodeling and transcription regulating through histone modifications. Researches suggest that INC2 protein is an important factor in the genesis, metastasis and prognosis of many kinds of tumors. Resent studies indicate that INC2 can not be simply classified as oncogene or tumor suppressor. At present, the function of INC2 in tumorigenesis and tumor development involves interaction with varied molecules, but the mechanisms remain largely unknown, which still require further investigation.

恶性黑色素瘤的发病率和病死率在逐年增长，引发广泛关注。目前恶性黑色素瘤的治疗方式主要为手术、化疗和靶 向治疗，总体疗效极差。然而，PD-1抗体治疗恶性黑色素瘤的成功，使广大研究者把希望聚焦于生物免疫治疗。肿瘤浸润淋巴细 胞（tumor infiltrating lymphocyte，TIL）是从肿瘤组织分离出的淋巴细胞，经体外扩增后得到的能够杀伤肿瘤细胞的细胞群，具有 高杀瘤活性和高靶向性特点。临床试验研究发现，TIL对恶性黑色素瘤治疗效果显著且稳定，但其临床疗效尚未完全阐明。本文 对TIL免疫治疗的发展及其在恶性黑色素瘤治疗中的研究新进展作一综述，以期为恶性黑色素瘤的治疗提供新的策略。

Objective To investigate the feasibility and stability of medical gas suction feeding device for copying the model of respiratory failure in dogs. Methods The self-designed medical gas suction feeding device was used to establish the model of respiratory failure in dogs. After regulating the proportion of oxygen (O2), carbon dioxide (CO2) and nitrogen (N2), the fraction of inspiration O2 (FiO2) was decreased, while the forced inspiratory carbon dioxide (FiCO2) was increased. At the same time, the breathing out pathway was open to make the arterial oxygen partial pressure p (O2) and arterial blood carbon dioxide partial pressure p (CO2) reached and stabilized in a stable condition. The arterial blood samples between default state and 1 hour, 2 hour after modeling were collected to detect the blood gas index. Results One hour after the establishment of model, the p (O2) was≤60 mmHg (1 mmHg=0.133 kPa), and p (CO2) was≥50 mmHg (1 mmHg=0.133 kPa), which suggested that the dog model of respiratory failure was established successfully. Compared with the basic state, data of pH, oxygen content, oxygen saturation (SaO2) and residual alkali (BE) were decreased at 1 hour and 2 hour after modeling (P < 0.05). The p (O2), oxygen content, SaO2 were decreased in 2 hour after modeling compared with those of 1h after modeling (P<0.05). There were no significant differences in pH, p (CO2), TCO2, HCO3-and BE between 1 hour and 2 hour after modeling (P > 0.05). Conclusion Under the regulation of the medical gas suction feeding device, the respiratory failure state of large experimental animals is successfully established.

OBJECTIVE:To establish a method for the content determination of 1-phenyl-7-(3-methoxy-4-hydroxy) phe-nyl-5-ol-3-heptanone in active ingredients of Mongolian medicine compound shudage-4. METHODS:HPLC was performed on the column of Intersil ODS-3 with the mobile phase of acetonitrile-0.5%phosphoric acid at the flow rate of 1.0 ml/min,the detection wavelength was 210 nm,temperature was 30 ℃,and the volume was 20 μl. RESULTS:The linear range of 1-phenyl-7-(3-me-thoxy-4-hydroxy) phenyl-5-ol-3-heptanone was 0.102-1.02 μg(r=0.999 9);RSDs of precision,stability and reproducibility tests were no more than 1.52%;average recovery was 97.10%(RSD=1.80%,n=6). CONCLUSIONS:The method is accurate,sim-ple and reproducible,and can provide basis for the quality control of Mongolian medicine compound shudage-4.

Objective To investigate ING2 expression in normal gastric tissue,gastric carcinoma and precancerous lesions, and to explore correlation between ING2 expression and the carcinogenesis and progression of gastric carcinoma and the clinicopathological signficance as well as the correlation between ING2 and raP53 protein. Methods The expression of ING2 was measured by PV9000 two-step immunohistochemical staining. In total, 188 gastric cancer(GC), 128 matched normal gastric mucosa,35 chronic atrophic gastritis (CAG), 87 intestinal metaplasia (IM) and 36 dysplasia (DYS) samples were analyzed. Expression of mP53 was measured in 40 samples from the 188 gastric carcinomas mentioned above. Results Positive ING2 expression was significantly more frequent in CAG (74.29%) ,IM (91.95%) ,DYS (75.0%) and GCs (70.21%) than in normal gastric mucosa (36.72% ,P ＜0.05). Among GCs, ING2 expression varied by Lanren's classification. A significantly higher rate of positive ING2 expression was observed in intestinal type GCs (80. 56%) than in diffuse (64.49%) and mixed (55.56%, P ＜ 0.05) type GCs. Furthermore, positive ING2 expression was significantly more frequent in well-to-moderately differentiated adenocarcinoma(80. 60%) than in poorly differentiated adenocarcinoma (62. 62%, P ＜ 0. 05). No correlation was found between ING2 expression and mP53 expression in GC (P ＞ 0. 05). Over-expression and mislocalization of ING2 may be involved in the development of CC, especially intestinal-type GC. Further investigations are needed to explore the relevant molecular mechanism.

Objective To improve mental health of children in the rural area by intervention with moviewatching.Methods The participants were 438 students from Anhui province,including 273 students in grade 5 from two primary schools and 165 students in grade 2 from two middle schools.Subjects were randomly divided into two groups:an intervention group with movie-watching (n=188)and a control group(n=250).Results The inter-group difference between the pre-measurement and the post-measurement on depression and anxiety of the intervention groups and the control groups in grade 5 from two primary schools was not significant,while the intergroup difference between the pre-measurement and the post-measurement on value8(the intervention group (2669.52±2216.43),the control group(316.57±1410.83)),and the inter-group difference was significant(t_(values)=10.721,P=0.000).The inter-group difference between the pre-measurement and the post-depression, anxiety and values of the interntion groups and the control groups in grade 2from two middle schools was significant(t _(depression)=2.046,P=0.043;t _(state amxoetu)=3.507,P=0.001;t _(trait anxiety)=3.392,P=0.001;t _(values)=5.022,P=0.000)respectively).The intervention effect on mood of depression,anxiety and the values of intervention groups in grade 5 from two primary schools was not significant,while significant on values(F=91.62,P=0.000);while that of intervention groups in grade 2 from two =0.000 respectively).Conclusion Movie-watching intervention wag an effective way to improve middle school students' mental health and to develop correct values.Movie-watching should be an alternative way to improve met-al health of children in rural area for its operability.

Objective:To study the effect of Snyder's hope theory nursing on the scores of psychological stress, quality of life and neurological function in patients with acute hypertensive cerebral hemorrhage.Methods:From June 2017 to December 2018, 100 patients with acute hypertensive cerebral hemorrhage in the Second Affiliated Hospital of Xi′an Jiaotong University were selected as the study object. According to the random number table, the patients were divided into observation group (50 cases) and control group (50 cases).The patients in the control group were given routine rehabilitation nursing mode, and the patients in the observation group received Snyder′s hope theory nursing on the basis of the control group. The rescue time, the recovery time and the incidence of complications of the two groups were compared. The degree of anxiety and depression, neurological function, quality of life of the patients were evaluated by Self-rating Anxiety Scale(SAS), Self-rating Depression Scale(SDS), National Institutes of Health Stroke Scale(NHISS), Glasgow Coma Scale(GCS) and SF-36.Results:The rescue time and recovery time were (58.13±10.36) min, (12.7±5.3) d in the observation group, and (85.71±8.30) min, (21.1±3.3) d in the control group, and there were significant differences between the two groups ( t values were 14.691, 10.646, P < 0.05).There was no significant difference in SAS, SDS, NIHSS, GCS, SF-36 score before intervention between the two groups ( P> 0.05).The scores of SAS, NIHSS, GCS after intervention were (40.56±1.72), (11.23±2.85), (13.12±4.11) points in the observation group, and (46.56±1.62), (14.97±4.55), (11.13±3.15) points in the control group, and there were significant differences between the two groups ( t values were 17.956, 4.926, 3.212, P<0.01). There were significant differences in SF-36 after intervention between the two groups( t values were 7.124-13.014, all P<0.01). The incidence of complications was 8.0%(4/50) in the observation group, and 24.0%(12/50) in the control group, and there was significant difference between the two groups( χ2 value was 4.762, P<0.05). Conclusions:Snyder's hope theory nursing has a significant effect on the improvement of anxiety and depression in patients with acute hypertensive cerebral hemorrhage, which is worth popularizing.

Objective To compare the sensitivity and specificity of dot immunogold method (DIM) and particle agglutination (PA) for the diagnosis of mycoplasma pneumoniae (MP) infection. Methods The 190 serum specimens of 113 children with mycoplasmal pneumonia (infection group) and 50 serum specimens of 50 health children (health group) were tested for MP by PA and DIM- A and B. Results In infection group, the positive rates of DIM- A and B were 82.63% (157/190) and 84.74%(161/190), and there was no statistical difference (χ2 = 0.31, P>0.05); the positive rate of PA (titer ≥1:160) was 70.00%(133/190), the positive rate of PA was significantly lower than that in DIM-A and B, and there were statistical differences (P<0.05). In infection group, with the increase of PA titer, the positive rate of DIM was gradually increased, and there was a correlation between 2 methods (rA=0.972, rB=0.830);the positive rates of DIM- A and B in serum specimens of PA negative were 40.62%(13/32) and 53.12%(17/32), and in the PA titer of 1:5120, there was still a negative result in DIM. In health group, the positive rates of DIM-A and B were 26.00% (13/50) and 28.00% (14/50), and there was no statistical difference (χ2 = 0.66, P>0.05); the positive of PA was 8.00% (4/50), the positive rate of PA was significantly lower than that in DIM- A and B, and there were statistical differences (P<0.05 or<0.01). Conclusions Compared with the PA, DIM has low sensitivity and poor specificity for clinical diagnosis. DIM is not suitable for clinical diagnosis of MP infection.