Objective To investigate the change in the content of intracellular adhesion molecule-1(ICAM-1)in myocardium of rats at different time courses after exhausted exercise.Methods One hundred male SD rats were divided into sedentary control group,single bout of exhausted exercise group and 14-day consecutive exhausted exercise group.Rats were killed at 0.6,1 2 and 24 hours after exhausted exercise.Immunofluorescence technique and image analysis method were used to study the dynamic changes in the content of ICAM-1 in myocardium.Results Comparing with the control group,following these 2 modes of exhausted exercise,the content of ICAM-1 in rat myocardium increased and reached its peak value 6 hours after exercise,and then decreased,and ICAM-1 content in all other time courses were significantly increased(P<0.01)after exhaustive exercise,except 24h after exercise group (P>0.05).ICAM-1 content from different parts of myocardium immediately after consecutive exhausted exercise was significantly higher than that after single bout of exhausted exercise (P<0.01),and the differences disappeared 6 hours after exercise(P>0.05).ICAM-1 content in 12-and 24-hour single bout of exhausted exercise groups was significantly higher than that in consecutive exhausted exercise groups(P<0.01).Conclusion The increase of ICAM-1 level in myocardium after difierent modes of exhausted exercise can activate cytokine,mediate inflammatory responses of myocytes,such as adhesion and infiltration,which contribute to the exercise-induced myocardial micro-injury.

The paper describes the basis, scope, and contents of the index system for assessing maternity and child care institutions in Beijing. The new system, based on the readjustment, recombination and redistribution of the original index system for assessment, has two newly added elements, viz. financial position analysis and leadership style and organization culture. In order to make a distinction between leaders' responsibilities and an institution's orientations and to reduce behavior abnormality and information bias in the process of assessment, the new system has been divided into two major parts: evaluation of the institution's conditions for survival and capabilities for development, which is jointly decided by internal and external factors, and appraisal of the institution's performance, which is decided mainly by internal factors.

0.05).The sera from animals immunized with parental strains had significant higher titer of IgG antibodies against GM1,GD1a and GT1b,at 14 and 28 day than before immunization(P

Objective To explore the angioarchitectrue characteristics and appropriate treatment strategies of dural arteriovenous fistula (DAVF) in foramen magnum region.Methods The clinical data of patients with DAVF diagnosed by digital subtraction angiography (DSA) were analyzed retrospectively.Results Thirteen patients intraoperative were found fistula and complete resection,patients discharged from hospital,DSA check showed that the DAVF fistula completely disappeared,all patients symptoms were improved to different extents.Conclusions The clinical features,prognosis and treatment methods of DAVF in forament magnum region depends on its angioarchitecture,especially the lesion site and venous drainage,surgical operation can usually find the fistula and can be completely removed.

BACKGROUND:Bone marrow mesenchymal stem cells have beneficial effects on the treatment of various diseases. Mitochondria transfer is newly proposed and its specific mechanisms of action and control factors remain unclear.
OBJECTIVE:To review the studies about stem cells and mitochondrial transfer, then to discuss its value on clinical.
METHODS:The PubMed, VIP and Wanfang databases were searched for related articles concerning stem cells and mitochondrial transfer. Key words were“stem cell, embryonic stem cell, progenitor cell, mitochondria”in Chinese and“Stem cell[s], Mother cell[s], Progenitor cell[s], Colony-Forming Unit[s], Colony Forming Unit[s], Mitochondria[l] transfer”in English. Thirteen articles were found initial y, and using the citation tracking method, final y 42 articles were determined. RESULTS AND CONCLUSION:Studies have shown that mitochondrial transfer from bone marrow mesenchymal stem cells is associated with rescue of aerobic respiration and restoration of mitochondrial function in the injured somatic cells. Bone marrow mesenchymal stem cells and recipient cells form tunneling nanotubes for mitochondrial transfer. Movement of mitochondria between cells is regulated and directed by Miro1. The successful transfer of mitochondria may be accompanied with the clearance of damaged mitochondria. The rescue of mitochondrial function in early stages may provide a valuable therapeutic strategy for various diseases include acute lung injury.

ObjectiveTo compare the roles of Toll-like receptor-4 (TLR-4) in the acute lung injury (ALI) induced by lipopolysaccharide (LPS) and by hemorrhagic shock and resuscitation (HSR) and LPS (twohit) in mice.MethodsTwo types of mice were used in this study:free wild type mice (C3H/HeN) and TLR4 gene mutation type ( C3H/HeJ).Each type of mice was randomly divided into 2 groups ( n ＝ 18):group sham operation+ LPS (group S/LPS) and group HSR + LPS (group HSR/LPS).Hemorrhagic shock was induced by blood withdrawal until MAP was reduced to 35-45 ram Hg and maintained for 60 min (first hit).The animals were then resuscitated by infusion of shed blood and lactated Ringer' s solution.LPS 30 tμg/kg was instilled into trachea at 24 h after HSR (second hit).Arterial blood gas analysis was performed and the animals were then sacrificed by exsanguination at 0,3 and 6 h after LPS(T,,T2,T3 ).The lungs were removed.W/D lung weight ratio and MPO activity,IL-6 and 1L-10 contents in the lung tissue were determined.The changing rate of the abovementioned variables at T2,T3 based on the values at T1 were calculated.ResultsIn C3H/HeN animals the changing rate of PaO2 was significantly lower while the changing rate of W/D ratio,MPO activity and IL-6,IL-10 contents in the lung tissue were significantly higher in HSR/LPS group than in S/LPS group at T2.3.But in C3H/HeJ animals the above-mentioned variables were changed at T2.ConclusionThe role of TLR-4 in the two-hit-induced ALI is stronger than that in the LPS-induced ALI in mice.

OBJECTIVE: In order to understand the effect of stimulator of Fe transport(SFT) on Fe metabolism and its abnormality(absence or overloading),this study reviews the research development of SFT at home and abroad and focused on the relationship among expression,structure,physiological function,expressing controlling and expressing abnormality with brain iron metabolism.DATA SOURCES: Electronic literature search of NCBI related to SFT was performed using the terms "stimulator of iron transport" or "stimulator of Fe transport",and the language was restricted in English. And simultaneously CNKI database was searched with the word "brain iron metabolism" and"stimulator of Fe transport" in Chinese from January 1997 to October 2004.STUDY SELECTION: Articles that reported the structure,expression regulation of SFT and its relationship to brain iron metabolism diseases were included.DATA EXTRACTION: Twenty pieces of SFT-related literatures and 1300pieces of literatures related to brain iron metabolism were found,among which 21 pieces were included.DATA SYNTHESIS: From the 21 pieces of literatures,the structure,distribution,biological function,expression regulation of SFT and its relationship with brain iron metabolism were mainly discussed.CONCLUSION: SFT can stimulate both transferrin- and nontransferrin-bound iron uptake. The expression of SFT can be regulated transcriptionally and post-transcriptionally,mainly regulated in response to different cellular iron levels. So SFT plays an important role in brain iron metabolism.

Objective To evaluate the effect of dexmedetomidine pretreatment on lipopolysaccharide (LPS)-induced release of inflammatory mediators in primary microglias in neonatal rats.Methods Purified primary microglias were seeded in the plate and randomly divided into 3 groups with 10 holes in each group:control group (group C),LPS group (group L) and dexmedetomidine pretreatment group (group D).In group C,the cells were incubated in serum-free DMEM for 24 h.In group LPS,the cells were incubated with LPS (final concentration 1 μg/ml) for 24 h.In group D,the cells were pretreated with dexmedetomidine (final concentration 1 ng/ml) for 1 h,then LPS (final concentration 1 μg/ml) was added and the cells were incubated for 24 h.The levels of nitric oxide (NO) (by Greiss method) and prostaglandin E2 (PGE2),IL-1β and TNF-α (by ELISA) in the supernatant were measured after 24 h of incubation.The expression of inducible nitric oxide synthase (iNOS) mRNA in the cells was determined by RT-PCR.Results Compared with group C,the levels of NO,PGE2,IL-1β and TNF-α,and expression of iNOS mRNA were significantly increased in groups L and D (P ＜ 0.05).There was no significant difference in the indexes mentioned above between groups D and L (P ＞ 0.05).Conclusion Pretreatment with dexmedetomidine has no significant effect on LPS-induced release of inflammatory mediators in primary microglias in neonatal rats.

Objective To explore the efficacy of craniotomy and aneurysm clipping in elderly patients with ruptured intracranial aneurysms.Methods Totally 75 elderly patients with ruptured intracranial aneurysms in our hospital who underwent craniotomy and intracranial aneurysm clipping:approaching into head by wing point based on CT image,selecting the appropriate position and angle for clipping the aneurysm.Surgical efficacy and postoperative complications were observed.Prognosis was assessed by Glasgow Outcome Scale (GOS).Results 77 aneurysms presented in 75 patients and 76 aneurysms were clipped.The main postoperative complications were intracranial hematoma (5 cases),pulmonary infection (4 cases),electrolyte imbalance (10 cases),intracranial infection (2 cases),arrhythmia (3 cases),gastrointestinal bleeding (5 cases),cerebral infarction (3 cases).GOS assessment demonstrated that prognosis in 48 cases was good (64.0％),16 cases was moderate disability (21.3％),6 cases was severe disability (8.0％),2 cases was vegetative survival (2.7％),3cases was in death (4.0％).The cure rate was 64.0％ and the overall good-prognosis rate was 85.3％.Conclusions Craniotomy and aneurysm clipping has a better surgical efficacy and a high cure rate in elderly patients with ruptured intracranial aneurysm.