Objective To observe the expression of OBR and NPY in mouse hypothalamus.Methods In mouse hypothalamus,the location and coexpression of OBR and NPY were observed with immunohistochemistry and double immunohistochemistry.Results OBR positive cells distributed as clump in hypothalamus ME,ARC and VMN,having obscure boundary.OBR positive cells were also present in choroid plexus,brain ependymal layer cell and vascular endothelial cells.In hypothalamus ARC,NPY positive neurons were present with bright red color in cell plasma.The NPY positive neurons were found as round or ellipse,having many neurites.NPY positive fibers were present in ME.In double immunohistochemistry result,the coexpression of OBR and NPY showed black color,because that OBR positive cells showed brown purple or dark purple granula near the NPY positive neurons.Conclusion OBR distributed in ME,ARC,VMN of mouse hypothalamus,choroid plexus,brain ependymal layer cells and vascular endothelial cells.Meanwhile NPY also distributed in ME,ARC,cerebral cortex and hippocampus and so on.Moreover the coexpression of OBR and NPY was present in mouse hypothalamus ARC.

Adrenomedulin is an angiogenesis peptide that was found recently.It plays a critical role as an autocrine/paracrine tumor cell survival factor.Recently,adrenomedulin has been proved that it is overex- pressed in tumor,such as breast cancer.It may have a significant role in tumor progression and differentiation by stimulating mitogenic activities,inhibiting immune response,inhibiting apoptosis and enhancing angiogen- esis.We may realize targeted therapy tumor by intervening adrenomedulin,its receptor,and the signal con- duction pathway.

Adult ; Female ; Humans ; Meningeal Neoplasms ; complications ; diagnosis ; Meningioma ; complications ; diagnosis ; Otitis Media with Effusion ; diagnosis ; etiology ; Skull Base Neoplasms ; complications ; diagnosis

Objective To compare the incorporation method of 3H-TdR and 125Ⅰ-UdR on determining the proliferation effect of lymphocytes. Methods The proliferation effects of lymphocyte and Daudi lymphoma cells were estimated by 3H-TdR and 125Ⅰ-UdR incorporation. Results The incorporating fraction of 3H-TdR and 125Ⅰ-UdR into lymphocyte was 20.95% ± 1.06% and 1.00% ±0.04%,respectively, and the incorporating fraction for the lymphoma cells was 29. 94% ± 4. 10% and 6. 02% ±0. 73% ,respectively. The incorporation fractions of 3H-TdR into lymphocyte and lymphoma cells were much higher than those of 125Ⅰ-UdR, but the incorporating fractions of 3H-TdR or 125Ⅰ-UdR into the lymphoma cells were much higher than those of lymphocytes. Conclusions For lymphocytes, 125Ⅰ-UdR cannot substitute 3H-TdR as a tracer agent. But for lymphoma cells, whether 125Ⅰ-UdR could be replace 3H-TdR or not needs further research.

ObjectiveTo explore the relationship of circadian distribution of acute myocardial infarction with AMI location and ST segment changes in elderly patients.MethodsThe time of infarction, its anatomic location, changes of ST segment, and coronary angiography were studied in 909 elderly patients with acute myocardial infarction (AMI) ( 412 with anterior AMI and 423 with inferior AMI) admitted to our coronary care units from January 1996 to January 2006.ResultsThe onset of inferior myocardial infarction were more frequent between midnight and 6AM than other periods of the day (n=138/423,32.6% of all inferior myocardial infarction patients, P<0.01). The onset of anterior myocardial infarction were more frequent between 6AM and noon than other periods of the day (n=156/412, 37.9% of all anterior myocardial infarction patients, P<0.01). Coronary angiography was performed in 789 patients (86.8%, 516/909).118 cases of them with inferior infarction occured between midnight and 6AM, including 85.6% of them were due to right coronary artery occlusion and 14.0%(17/118) of them were due to left coronary artery occlusion (P<0.01).275 cases of them with inferior infarction oecured between 6AM and midnight, including 52.2% (149/275) of them were due to right coronary artery occlusion and 45.8% of them were due to left coronary artery occlusion (P>0. 05). The onset of inferior myocardial infarction between 6AM and noon was the most frenquent in patients with ST segment elevation (44.0%, 263/644), while the onset of inferior myocardial infarction between midnight and 6 AM was the most frenquent in patients with non-ST segment elevation (36.6%,96/265). ConclusionsThe frequency of AMI at night is higher in elderly patients with ST segment elevation than in elderly patients with non-ST segment elevation.AMI at night is usually due to right coronary artery occlusion, which suggests that a protective role of sleep may be limited to left coronary artery -related events and AMI of non-ST segment.

Objective To investigate the effects of limited resuscitation on hepatic ischernia-reperfusion in-jury in rots with hemorrhagic shock. Method Uncontrolled hemorrhagic shock was induced in 54 rats by transect-ing the middle branch of the splenic artery to produce standardized massive splenic injury. Resuscitation started when the mean arterial pressure (MAP) reached 40 mmHg. The rats were randomly divided (n = 9per group) in-to sham-operated group (SS), or one of five treatment groups in which infusion of Ringer' s solution was continually administrated to maintain MAP at 40 (RS40), 50 (RS50), 60 (RS60), 80 (RS80) or 100 mmHg (RS100) for 45 minutes (T45 point). After the bleeding was controlled, resuscitation was continued with Ringer's solution and whole blood (2:1) to increase the MAP to 100 mmHg for 120 minutes (T165 point), which was followed by obser-vation for 240 minutes (T405 point). All animals were observed for 240 minutes or until death. Blood specimens were collected at TO, T45, T165 and T405 for determination of blood lactate levels. At the end of the experiment,a small amount of hepatic tissue was collected to measure tissue blood perfusion, total antioxidative capacity (TAOC), Na+K+ ATPase activity and malondialdehyde (MDA) levels. Results At T405, the blood lactate lev-els in the RS80 and RS100 groups [(3.60±0.68) and (3.84 ± 1.09) mmol/L, respectively] were significantly higher than those in the SS, RS40, RS50 and RS60 groups [(2.00±0.66),(2.74±1.45),(2.43 +0.94) and (2.07±0.95) mmol/L, respectively;all:P < 0.05]. The MDA levels were significantly higher in the RS80 and RS100[(7.32±0.31) and (7.71±0.23) nmol/mg,respectively] than those in the SS, RS40, RS50 and RS60 groups[(4.95±0.80),(6.14±0.94),(6.42±0.48) and (6.84±0.36) nmol/mg, respeetively;all: P <0.05]. The Na+ K+ ATPase and TAOC levels were significantly lower in all of the RS groups than those in the SS group (all: P < 0.05), and those in the RS80 and RS100 groups was significantly lower than those in the RS40,RS50 and RS60 groups (all: P <0.05). Blood perfusion in the RS80 and RS100 groups was significantly lower than that in the other groups (all: P < 0.05). Conclusions If hemorrhage is uncontrolled, limited resuscitation appears to balance the needs for organ perfusion, improve the microcircttlation and decrease lactate levels. Fur-thermore, limited resuscitation could decrease ischemia-reperfusion injury in liver tissue.

Objective To investigate the influence of age on recent prognosis of elderly inpatients with acute myocardial infarction (AMI).Methods A total of 2535 inpatients with AMI were divided into different age groups.The influences of age and coexistent diseases on prognosis in AMI patients were analyzed retrospectively.Results The hospital mortality and 30-day mortality were higher in patients aged ≥80 years compared with patients aged 65-79 years and patients aged 60-64 years(χ2 =46.378,P<0.01 ;χ2 = 44.534, P<0.01).In 60-64 years old patients with AMI, the prevalences of old myocardial infarction (OMI), renal insufficiency, respiratory insufficiency were higher and the prevalence of angina pectoris was lower in death group than in survival group (all P<0.05).In 65-79 years old patients with AMI, the prevalences of OMI, hypertension, diabetes,cerebrovascular disease, renal insufficiency, respiratory insufficiency were higher and the prevalence of angina pectoris was lower in death group than in survival group(P<0.05).In 80-94 years old patients with AMI, the prevalences of OMI, diabetes, cerebrovascular disease, renal insufficiency, respiratory insufficiency were higher and the prevalence of angina pectoris was lower in death group than in survival group(P<0.05).The prevalences of OMI, hypertension, diabetes, cerebrovascular disease,respiratory insufficiency were significantly increased in 80-94 years old death group versus 60-64 and 65-79 years old death group(all P<0.05).Conclusions The mortality rate of elderly patients with AMI is increased with age and atypical angina pectoris should be paid more attention in these patients.

Objective To study serotonin transporters(SERT) in postmortem human brains of Parkinson's disease(PD).Methods Immunoautoradiography was used to show SERT distribution in postmortem PD brains.ResultsIn comparison with healthy group,SERT decreased in dorsal raphe nucleus,substantia nigra and striatum in PD brains.Quantitative analysis showed that 25.9%、31.1%、27.2% and 24.7% of labeling intensity of SERT decreased in putamen,caudate nucleus,substantia nigra and ventrotegmental area as compared with corresponding control respectively.Among the four regions studied of dorsal raphe nucleus,SERT labeling intensity significantly decreased by 38.9%,37.3%,16.5% and 37.0% of corresponding control respectively in ventral part,dorsal part,caudal part and interfascicular part.Median raphe nucleus did not show the decreased SERT labeling.ConclusionDecreased SERT expression in three regions of postmortem PD brains indicates that a dysfunction of serotonergic raphe system may contribute to the etiology of Parkinson's disease.

Objective To investigate the constitution,density changes and carrier rate about Yersinia pestis of rodents in plague foci,and to provide the scientific evidence for plague prevention.Methods According to the program of national monitoring plague,two survey procedures,namely quadrat of single-ha for 24 h and 5 m mouse jam,were used to monitor the host animals; culture and identification of Yersinia pestis in liver or spleen of the experimental animals was carried out by using self-made medium in the north of Beiyuanzi village in Dingbian town Shaanxi province.Results One hundred twelve rodents were captured using the first procedures and the rodent average density was 8.62 ind./hm2 and six species of rodents were found namely Meriones unguiculatus ( 100 individuals),Microtusfortis(5 individuals),Ochotona daurica(3 individuals),Meriones meridianus (2 individuals),Mus musculus Linnaeus (1 individual) and Cricetulus barabensis (1 individual).One hundred seventy-three field mouses were captured using the second procedures including Mus musculus Linnaeus (136 individuals),Cricetulus barabensis (36 individuals),and Microtus fortis ( 1 individual ).Among them,Microtus fortis was found in the salt marshes in the southern edge of Ordos Plateau steppe in plague area of Dingbian county.Yersinia pestis was not identified in all animals.Conclusions Microtus fortis is found in natural foci of plague in Shaanxi province for the first time,and a new geographic region was found.Its epidemiological significance needs further study.

Objective To analyze the epidemiologic characteristics of epidemic hemorrhagic fever syndrome (EHF) from 2004 to 2010 and provide scientific basis for formulating control measures.Methods Epidemiological data of EHF between 2004 to 2010 were obtained from the“National Disease Surveillance Report on Management Information System”,and the population data were from the“National Disease Surveillance Information Management System for Basic Information Report System”.Descriptive epidemiological methods was used for statistical analysis.ResultsA total of 173 cases were reported in Qian'an from 2004 to 2010.From 2004 to 2010,the cases were 86,67,12,1,0,1,and 7 cases,respectively,and the rate were 13.12/10 million ( 86/640 249 ),10.42/10 million (67/642 688 ),1.86/10 million ( 12/645 124),0.15/10 million (1/647 983 ),0(0/650 720),0.15/10 million( 1/653 839),and 0.11/10 million(7/657 380),respectively.The overall rate was 3.86/10 million(25/648 283) of population.From 2004 to 2008 the incidence reported declined rapidly,then increased slowly after 2009.The cases were found intensively in winter(November - next January) and spring season (february - may).The incidence in the age group of 10 - 45 was higher than that of other age groups,and the total number of cases was 82.08％(142/173).The incidence in males( 114 cases) was higher than that of females(59 cases).Occupational distribution mainly to peasants and students,which accounted for 87.86％ (152/173).Conclusions Epidemic in the city declines rapidly follows by a slow recovery,suggesting that in the future surveillance,mice-killing and protection of vulnerable population should be strengthened.