Effects of cutting the ventral trunk of abtominal vagus nerve of rats. and stimulating its central end on the somatostatin concentration in amygdala, hy-pothalamic nuclei and stomach were studied by radioimmunoassay.Following section of the vagus nerve, the somatostatin concentration of amygdaloid nuclei was not changed, that of lateral preoptic area, hyopthalamic ventromedial nuclei and paraventricular nuclei was reduced, and that of mucosal and muscular layers of antrum and corpus of stomach was also decreased, indicating the tonic influence of the vagus nerve impulses on hypothalamic and gastric somatostatin concentration. Electrical stimulation of the central end of the vagus nerve decreased the somatostatin concentration of medial, lateral and central amygdala, increased that of lateral preoptic area, hypothalamic ventromedial and paravcntricular nuclei, and also increased that of mucosal and muscular layers of gastric antrum, suggesting that somatostatin in amygdala and hypothalamic nuclei plays a role in central integration of visceral afferent information.

The effects of somatostatin and cysteamine injccted into the ventromedial nucleus of the hypothalamus (VMH) on somatostatin-like immunoreactivity (SLI) concentration in the gastric antral mucosa and portal vein plasma as well as the gastric acid secretion were studied in anesthetized rats. The SLI concentration in the gastric antral mucosa and portal vein plasma and the gastric acid output were significantly increased one hour after injection of somatostatin (o. 5 ?g/0.5 ?l) into the VMH. Four hours later, the SLI concentration in the mucosa was still higher than the control level, while the SLI level in the plasma and the acid secretion were close to those of controls. On the contrary, the SLI concentration in the mucosa and plasma and the acid output were markedly decreased at four hours after injection of cysteamine (15?g/0.5?l) into the VMH. The present results suggest that both exogenous and endogenous somatostatin in the VMH have a facilitory action on the gastric somatostatin concentration and its release as well as on the gastric acid secretion, thus providing evidence for hypothalamic control of gastric somatostatin and acid secretion.

BACKGROUND: Exercise-induced myocardial cell apoptosis and signal transduction and regulation mechanisms of sports medicine research have become an important issue, but remain poorly understood. Studies concerning the protective effect of bone marrow-derived mesenchymal stem cells (MSCs) to the exercise-induced myocardial cell apoptosis are rarely conducted.OBJECTIVE: To analyze the protective effect of MSCs on myocardial apoptosis and the exercise-induced myocardial cell apoptosis, so as to explore the pathological cause of exercise-induced myocardial apoptosis and the protective effects of MSCs on myocardial cell apoptosis induced by hypoxia, ischemia, and oxidative stress.METHODS: A computer-based online search of articles was performed in Medline database (1994-01/2009-09) with "Mesenchymal stem cells, Excessive exercise, Cardiomyocyte, Apoptosis" as key words and Chongqing PubMed Result NCBI database (1994-01/2009-09), Tsinghua Tong Fang database (1994-01/2009-06), with "bone marrow mesenchymal stem cells, over-training, myocardial cells, apoptosis" as key words. RESULTS AND CONCLUSION: A total of 365 articles on stem cells and exercise-induced myocardial apoptosis were collected, including 120 Chinese and 245 English. Outdate, repetitive and similar studies were excluded, and 68 were included. MSCs display a protection to myocardial cell apoptosis induced by hypoxia, ischemia and oxidative stress caused by high-intensity or overload exercise training, thereby contributing to the improvement of heart function and early rehabilitation of exercise-induced myocardial tissue diseases.

Antiplatelet therapy is a major strategy with a growing body of evidence in management of ischemic cerebrovascular diseases.This article introduces the mechanism of currently available antiplatelet drugs as well as their practice guidelines and evidence from clinical trials.There is currently no robust evidence to support the use of venous antiplatelet agents.Aspirin is the sole evidence-based antiplatelet drug for treatment of acute ischemic stroke.Aspirin,dipyridamole and clopidogrel are effective in secondary stroke prevention.Combination therapy using aspirin plus extended-release dipyridamole is the only combination approach to demonstrate additive benefit.

Objective To study the psychological intervention of patients with schizophrenia using olanzapine treatment. Methods A total of 336 patients with schizophrenia from February 2015 to October 2016 were selected as the study subjects,randomly divided into the control group and the experimental group,each with 168 patients.Control group patients with olanzapine treatment,on the basis of the experimental group patients given psychological intervention,pay attention to the psychological state of the patients,strengthen the communication and exchanges with the patient,the treatment of patients with increased confidence and treatment compliance.The therapeutic effect of the experimental group and the control group was compared. Results After the corresponding treatment,7 patients in the experimental group showed a nursing dispute,which was 4.17％. In the control group, 46 patients had nursing disputes, accounting for 27.38％.However,the probability of nursing dispute in the experimental group was significantly lower than that in the control group,with statistical difference(P<0.05).The effective number of patients in the experimental group was 168.The effective number of patients in the control group was 120,and the proportion was 71.43％,with statistical difference(P<0.05). Control patients satisfaction with nursing cases for 130 cases,38 cases of patients are not satisfied,70 patients were generally satisfied with,is satisfied with 60 patients,patient satisfaction and nursing satisfaction rate of 77.38％ significantly lower than that of the experimental group(100％),with statistical difference(P<0.05). Conclusion Psychological intervention with olanzapine in the treatment of refractory schizophrenia better clinical effect, can significantly improve the treatment efficiency,further promotion of clinical significance.

The brain edema is a secondary cerebral injury in intracerebral hemorrhage(ICH) and one of the main causes of deterioration and death.The toxic effect of blood clots is involved in the formation of brain edema.The article reviews the commonly used antiedema drugs including mannitol,glycerol,hypertonic saline,furosemide,albumin,glucocorticoids,sodium aescinate and aprotinin,and introduces such hopeful drugs as edaravone,deferoxamine,argatroban and celecoxib in the treatment of ICH.

Objective To observe the expressions of DNA methyltransferases (DNMTs) 1,3a and 3b in retinoblastoma (RB).Methods Sixty-two RB samples and six normal retinas were studied,including 17 poorly differentiated and 45 well differentiated samples; 16 invasive and 46 non-invasive samples.The expressions of DNMT1,3a,and 3b,and Ki-67 were detected using immunohistochemical analysis.Brown staining of nuclei was considered to represent the positive stain for DNMT1,3a and 3b,and ki-67,blue staining as negative.The level of high expression of nuclear staining was,positive cells in DNMT1≥65 ％,in DNMT3a≥60％ and in DNMT3b≥40％.The correlations of DNMT1,3a and 3b expression in RB samples,and MIB-1 labeling index were analyzed.Results Viewed under the light microscope,negative expressions of DNMT1,3a and 3b were demonstrated in normal retinas,however,positive expression was observed in RB samples,with 100％ in DNMT1,98％ in DNMT3a and 92％ in DNMT3b.Comparing well differentiated RB samples with poorly differentiated samples,significant differences were found in high expression of DNMT1 (x2 =12.57,P＜0.05) and DNMT3a (x2 =10.54,P＜0.05) ; also in the positive cells of DNMT1 (U=179,P＜0.05) and DNMT3a (U=198,P＜0.05).No significant difference was found comparing high expression (x2=1.5,P＞0.05) and positive cells (U=307,P＞0.05) of DNMT3b.When comparing invasive tumor tissues with non-invasive tumors,significant differences were shown between high expression (x2 =4.72,P＜0.05) and positive cells comparing DNMT1 (U=236,P＜0.05).No significant difference was shown in high expression (x2=3.53,0.84; P＞0.05) in DNMT3a and DNMT3b,or in comparison with positive cells (U=338,257; P＞0.05).The expression of DNMTs was positively correlated with the MIB-1 labeling index in RB tissues (R2=0.554,0.376,0.219; P＜0.05).Conclusion There are high expressions of DNMT1,3a,and 3b in RB.

Objective To observe the expression and relationship of high-mobility group A(HMGA) 1,HMGA2,MIB-1 labeling index (LI) and let-7 in retinoblastoma (RB).Methods Forty-four RB samples were studied,including 11 poorly differentiated samples,33 well-differentiated samples; eight invasive and 36 non-invasive samples.The expression of HMGA1,HMGA2 and MIB-1 LI in RB were analyzed by immunohistochemitry.The HMGA1,HMGA2 were scored on a scale of 0 to high expression.0: no expression ; low: 1％ - 10 ％ ; medium: 11 ％ - 50 ％ ; high: ＞50 ％.The MIB LI were scored on a scale of 0to high expression.O: no expression;low: 1％ - 40％;high: ＞ 40％.Semiquantitative reverse transcription-polymerase chain reaction was used to assay the let-7 expression level: ≥ 80％ showed no significantly decreased expression; 60％ - 79％ showed medium decrease in expression; ＜ 60％ highly decreased in expression.Results In 44 RB samples,there were 14 cases with no HMGA1 expression (32％),11 cases with low expression (25％),10 cases with medium expression (23％),and nine cases with high expression (20％).Expression level of HMGA1 was significantly higher in poorly differentiated RB than in well-differentiated RB (x2 =11.3,P＜0.01) ; however,no statistically significant difference was found between invasive tumors and noninvasive tumors (x2 -5.9,P＞0.05).There were 11 cases with no HMGA2 expression (25％),11 cases with low expression-(25％),nine cases with medium expression (20％),and 13 cases with high expression (30％).Expression level of HMGA2 was significantly higher in poorly differentiated and invasive RB than in well differentiated and noninvasive RB respectively (x2=20.9,8.7; P＜0.05).There were 4 cases with no MIB-1 LI expression (9％),18 cases with low expression (41％),and 22 cases with high expression (50％).Expression level of MIB1 LI was significantly higher in poorly differentiated RB than in well-differentiated RB (t=5.2,P＜0.05).Higher expression of MIB-1 LI was found in invasive tumors than in noninvasive tumors,with no significant difference (t=-1.1,P＞0.05).Twenty seven cases had no significantly decreased expression of let-7 (61％).There were eight cases with medium decreased expression (18％) and nine cases with highly decreased expression (21％).Correlation analyses revealed that MIB1 LI expression significantly correlated with HMGA1and HMGA2 proteins (r=0.327,0.602; P＜0.05).A significantly inverse correlation existed between let-7 expression and HMGA1,HMGA2 proteins and MIB-1LI respectively (r=-0.247,-0.310,-0.392; P＜0.05).Conclusions Overexpression of HMGA1,HMGA2 and MIB-1 LI and down regulation of let-7 were demonstrated in RB.Supplying let-7 to RB cells can possibly inhibit HMGA1 and HMGA2 expression.

ObjectiveTo investigate the correlation between single nucleotide polymorphism (SNP)of complement factor H (CFH) gene and exudative age-related macular degeneration (AMD) susceptibility.MethodsThis is a retrospective case control study. 136 exudative AMD patients (AMD group) and 140age and sex-matched normal subjects (control group) were enrolled in this study. The peripheral blood was collected,polymorphism genotypes and frequency of CFH Y402H(rs1061170),CFH-257C ＞ T (rs3753394) and CFH IVS15 (rs1329428)were measured by polymerase chain reaction (PCR) and allelespecific restriction endonuclease digestion. The SHEsis software was performed on haplotype construction to analyze the frequency.ResultsThere are TT, TC, CC genotypes and T, C allele in CFH Y402H (rs1061170); CC, CT, TT genotypes and C, T allele in CFH-257C＞T (rs3753394); AA, AG, GG genotypes and A, G allele in CFH IVS15 (rs1329428). The differences of genotypes and allele frequency between 2 groups were statistically significant (P＜0. 05). The TC genotype in CFH Y402H, TT genotype in CFH-257C＞T (rs3753394) and GG genotype in CFH IVS15 (rs1329428) were associated with exudative AMD susceptibility (OR=4. 11,2. 55,3.11;P＜0.05). The T, C and G allele were the risk alleles (OR=3.14,1.72,1.79;P＜0. 05). The differences of frequency between TCG, CTG and CTA haplotype were statistically significant(X2 =10.53,6.60, 32.82;P＜0.05). ConclusionThere is correlation between SNPs of CFH gene and exudative AMD susceptibility.

Purpose：To evaluate the use of transrectal ultrasonography in diagnosis of prostate cancer.Methods：A high-frequency probe was used to examine 56 cases of prostate cancer transrectally and the sonographic features were analyzd. Results：On Trus image lesions were located in peripheral zone in 48(76.8%), transition zone in 8 (14.3%),and central zone in 5 (8.9%). 45 cases (80.4%) of the prostate cancer were hypoechoic,4(7.1%) were hyperechoic, 5(8.9%) had mixed echogenicity and 2 (3.6%)showed isoechoic appearance. Indirect signs represented prostatic asymmetry,intermittent capsular and dilation or disappear of the seminal vesicles.Conclusions：TRUS is imperative in the diagnosis and staging of prostate cancer.