Objective:To clone and express mouse fibroblast growth factor eight(FGF 8) and investigate the function of it Methods:According to the published sequence of mouse fibroblast growth factor 8, a pair of special primers was designed Then the full length cDNA of FGF 8b (a predominant isoform of FGF 8) was isolated from the total RNA of the mouse embryo by means of reverse transcription PCR and subcloned into the yeast expression vector of pYEX4T 1 in correct direction It was identified with sequencing The recombinant plasmid was transformed into yeasts The fusion protein expressed was verified by using Western blot The activity of the protein was examined by MTT and 3H TdR incorporation Results:The cDNA fragment was about 600 bps, and proved to be "b" isoform of FGF 8 exactly This fusion protein, with molecular weight about 55 kD, was highly expressed in yeast system The data of MTT and 3H TdR incorporation in NIH3T3 cells were increased obviously by the protein, and decreased by the antagonist Conclusion:Fibroblast growth factor eight was cloned and expressed.The protein was found to be capable of stimulating the proliferation of NIH3T3 cells Moreover, the recombinant protein of the extracellular fragment of FGFR1 can antagonize the response of NIH3T3 to the recombinant protein

Evidence-Based Medicine ; Humans ; Resuscitation ; Shock ; therapy

Objective:To investigate the feasibility of hemodialysis machine preventive maintenance model of based on quality control detection.Methods: Selected sample of 32 hemodialysis machines of two major imported brands, 16 of them using the traditional preventive maintenance mode for maintenance, and the other 16 sets of quality control detection based preventive maintenance hemodialysis machine maintenance mode. That: by use of HDM99XP detector instrument for testing the five hemodialysis machine main indicators, maintenance cycle is 16 weeks, and then the equipment failure rate indicators of two modes of preventive maintenance were compared.Results: The hemodialysis machine preventive maintenance model of based on quality control detection rise superior to the traditional maintenance mode in lower failure rate, quantitative, objective, and less affected by human factors.Conclusion: The hemodialysis machine preventive maintenance model of based on quality control detection was better than the traditional preventive maintenance mode,also a promising preventive maintenance mode.

Burns ; Evidence-Based Medicine ; Humans

Animals ; Burns ; physiopathology ; therapy ; Genetic Engineering ; Humans ; Hyperbaric Oxygenation ; Tissue Engineering ; Wound Healing

Objective: To explore the expression of MMP-9 in mouse brain tissue and its significance. Methods: Cryptococcosis ssuspension alone (fungal suspension group) or combined with aprotinin (aprotinin group) was injected in to female C57 BL/6 mice via femoral vein cannulation. The expression of MMP-9 was examined immunohistochemically 8 h later. Meanwhile, the mouse brain tissue homogenate colony count (CFU) was observed and the results were compared with that of the immunohistochemical examination. Results: The expression of MMP-9 was markedly increased in the fungal suspension group compared with the normal control group (P<0.01); the expression in the aprotinin group was not significantly different from that of the normal control group (P>0.05). The amount of cryptococcosis in the brain tissue was positively correlated with expression of MMP-9. Conclusion: MMP-9 is overexpressed in the brain of mice with Cryptococcal meningitis; MMP-9 might lead to increased permeability of blood brain barrier.

Adolescent ; Adult ; Female ; Humans ; Male ; Niemann-Pick Diseases ; genetics ; Pedigree

We report an autopsy case of congenital cytomegalic inclusion disease that was associated with massive periventricular calcification and hydrocephalus. The male boy was bron by cesarian section at 38 weeks of gestational age to a 28 year old mother and was dead two hours after delivery because of respiratory difficulty. Radiologic findings showed characteristic linear periventricular calcification, being associated with marked dilatation of the lateral ventricles. At autopsy, the brain parenchyme became 0.4 cm in average thickness due to obstructive hydrocephalus at aqueductal level. The inner surface of the lateral ventricle showed grayish white granular appearance that could correspond to the calcification seen on plain skull X-ray films. Although active ependymitis, destruction of the brain parenchyma with dystrophic calcification and gliosis were noted, there was no intranuclear inclusion. After scrutinizing many sections of various organs and tissue, we could be able to demonstrate a few inclusion bodies, highly suggestive of cytomegalic inclusion disease. It was discussed that this case might suggest that intranuclear inclusions in cytomegalovirus infection could by very difficult to find particularly when the infection is in inactive phase despite the presence of tissue necrosis and calcification of the brain.
Male ; Humans

Objective: To analyze the value and reliability of combined free fibula flap and radial forearm flap in the reconstruction of extensive composite oro-mandibular defects. Methods: Extensive composite oro-mandibular defects were reconstructed in 23 consecutive cases (averagely aged 52.9 years old) with combined free fibula flap and radial forearm flap from March 2000 to January 2002. Data concerning the operation, defect description and site, recipient vessel and complications were reviewed. Results: The overall flap survival rate was 100% (all of 46 flaps) without partial or total flap necrosis. The overall complication rate was 30.4%. The vessel thrombosis rate was 2.2%, and the flap salvage rate was 100%. Conclusion: In selected cases, combined free fibula flap and radial forearm flap method may provide satisfactory reconstruction for extensive oro-mandibular defect, and greatly improve the quality of life of patients.

"Three-multi" overall evaluation system on the teaching effect of Microbiology experiment,which consisted of multi-aspect,multi-angle and multi-level,was discussed in this paper. The evaluation system showed a remarkable effect in stimulating the leaning interests of students especially.