Objective To investigate the possible mechanisms of ox-LDL on vascular smooth muscle cells (VSMC) with and without exogenous zinc finger protein A20 gene. Methods VSMC were trans-fected with plamid containing A20 gene and incubated with ox-LDL. TLR4 and LOX-1 mRNA expression were measured by RT-PCR. Results After VSMC incubated with ox-LDL, the expression of LOX-1 and TLR-4 mRNA reached a higher level. However, when VSMC were transfected with plasmid containing A20 gene, the NF-kB nuclear translocation and the ability of migration reduced to normal level. Conclusions ox-LDL can significantly activate NF-kB signaling system and enhance migration in VSMC. The activation may induce the inflammatory response in arterial wall, the migration of VSMC to the intima, and triggering the process of atherosclerosis. Transfecting plasmid containing A20 gene significantly inhibited the activation of NF-kB and the ability of migration of VSMC. A20 effects might be through inhibiting NF-kB signaling. Meanwhile, A20 blocked the development of atherosclerosis.

Ultrasonic scalpels,including incision type and aspiration type,are introduced from aspects of the principles,key technologies and clinical application.Uitrasonic scalpel has the advantages of less bleeding,exact incision,,safety,shortened time of operation and less damage to surrounding tissue.Some technology problems of ultrasonic scalpel are also summarized.It is pointed out that ultrasonic scalpel is the tendency and direction of clinical surgery development,which has extensive application prospects.

OBJECTIVE: As a new method of altitude training, stimulated living high-training low training (HiLo), can solve the problems in traditional altitude training. In this paper, we review the effect of simulated living high-training low on the related indexes of red blood cells and the expression of erythropoietin and hypoxia inducible factor-1mRNA to improve the development and application of HiLo, and make it better service for our athletes. DATA SOURCES: A computer-based online search of PubMed was undertaken for the articles published between January 1972 and December 2005, among which partial articles were retrieved according to relevant references with the keywords of "simulated living high-training low training (HiLo), indices of red blood cell, effect; erythropoietin, hypoxia inducible factor-1; gene". Meanwhile, we searched http://cnki.hunnu.edu.cn for the relevant articles published between 1996 and 2006 with the same key words in Chinese. STUDY SELECTION: The articles that involved the effect on the indices of red blood cell and the expression of erythropoietin and hypoxia inducible factor-1 mRNA in the model of stimulated living high-training low training through the first trial sport were chosen after the first selection. Then, the full texts of these articles were looked up to identify whether they were the relevant studies. Inclusive criteria: ①randomised controlled experiments; ②the experiment including control and intervention groups. Exclusive criteria: ①review articles; ②repetitive studies. DATA EXTRACTION: Totally 90 relevant articles were collected, of which 38 were accordant with the inclusive criteria and the 52 repetitive studies or review articles were excluded. DATA SYNTHESIS: ①Levine discovered that in HiLo the maximal O2 consumption (VO2max) in the training group was increased 5% in the mean and red cell 9% and the ability of exercise was largely improved, while the results of the control group had no significant changes. ②HiLo training can induce the production of hypoxia inducible factor-1, which regulates erythropoietin, and its production. The increase in erythropoietin triggers an increase in red cell mass and Hb concentration. This hematological acclimatization response facilitates the restoration of blood O2 content and improves tissue oxygenation. Continuous residence at moderate heights (over 2 000-2 500 m) could improve the oxygen transport capacity, augment VO2 max and enhance exercise performance by increasing the content of erythropoietin and hemoglobin concentration. ③HiLo can induce the expression of hypoxia inducible factor-1, but the problems that how it regulates the expression of erythropoietin and transport the signal, and HiLo can alert the portion of blood, which affects the ability of exercise still need further study. Then we will more clearly learn the mechanism of the effect of HiLo on the ability of athletes, and help to enhance their performance. CONCLUSION: HiLo can increase the expression of erythropoietin and hypoxia inducible factor-1mRNA and the generation of red blood cells, which leads to an increase in hemoglobincon concentration and hematocrit, and effectively improves the ability of athletes.

Hyperthyroidism with periodic paralysis is common in clinic,the curative effect of peroral drugs on it is not satisfactory. In order to evaluate the treatment of 131 I for periodic paralysis in patients with hyperthyroidism, fouty two patients with hyperthyroidism complicated with periodic paralysis were put on p.o. 5.0 9.0 mCi 131 I Na treatment and the remission rate of periodic paralysis was observed.The total effective rate was over 95%. It can be concluded that 131 I could be used as a routine therapy for periodic paralysis in most patients with hyperthyroidism for its safety and efficiency.

Objective To observe the CT features of mycoplasma pneumoniae pneumonia. Methods CT features of 40 adult patients with serologically proven mycoplasma pneumoniae pneumonia were retrospectively reviewed. Results The most common CT findings of mycoplasma pneumoniae pneumonia were ground-glass opacity (34/40, 85.00%) and consolidation (28/40, 70.00%). The other findings included nodules (18/40, 45.00%), thickening of the bronchovascular bundles (6/40, 15.00%), interlobular septal thickening (6/40, 15.00%), mediastinal lymphadenopathy (6/40, 15.00%) and pleural effusion (4/40, 10.00%). Most of the ground-glass opacity and consolidation showed tendency of lobular distribution and involving the lower lobes. In some patients, the absorption of the lesions was slower than the relief of symptoms. Conclusion CT findings of mycoplasma pneumoniae pneumonia have some features, and can provide help for the diagnosis of mycoplasma pneumoniae pneumonia.

Humans ; Methyl Ethers ; toxicity ; Occupational Exposure

The occurrence rate of DTC in children and adolescents is not high.However,DTC in these patients has some distinct characteristics different from those in adult,such as larger tumor volume at diagnosis,early invasion of neck lymph nodes and early distant metastases,high NIS expression,high recurrence but higher overall survival rate.131 I ablation is still one of the important treatment methods after surgery.Currently,there are 3 major dosage regimens adopted for 131I treatment: prescribed dose without causing bone marrow suppression/toxicity,dose aiming at tumor ablation,and empirically fixed dose.

Objective:To investigate the changes of hyoid position and pharyngeal airway before and after sagittal split ramus osteotomy (SSRO) of skeletal mandibular prognathism. Methods:Sixteen severe skeletal mandibular prognathism cases(Class Ⅲ, 5 males and 11 females) were chosen. Pre and post operation lateral cephalograms analysis reflecting pharyngeal airway and position of the hyoid bone was performed. Results: ① After SSRO, the width of airway decreased significantly. ② The distance between the mandible and the hyoid bone was also decreased significantly. No significant differences were found regarding measurements of the hyoid bone to the cranial base in male patients. Conclusion: The distance from the mandible to the hyoid bone and the width of airway were decreased significantly after SSRO. It suggests that the tongue and airway might be reformed functionally to new environments following SSRO surgical treatment.

WTBZ]Survivin belongs to the member of IAP family (inhibitor of apoptosis, IAP) proteins and is a bifunctional protein that suppresses apoptosis and regulates cell division. Survivin is a tumor specific antiapoptosis factor that is expressed selectively in all the most common human carcinomas but not in normal adult tissues. Studies indicated that Survivin played a crucial role in the genesis and progression of malignancy and was an important predictive/prognostic parameter in tumors. Survivin also participates in angiogenesis. Recently, Survivin has been used as a novel diagnostic/therapeutic target in cancer.

Purpose To investigate the clinical and pathological features of inflammatory fibroid polyps ( IFPs) and to discuss its diag-nosis, differential diagnosis and treatment. Methods Clinicopathological data of 14 cases of IFPs were collected and analyzed retro-spectively. Results Most of the 14 cases were found to have submucosal polyps of the digestive tract protruding growing into the cavi-ty. Perivascular onion skinning which formed by spindle fibrocytes around vascular proliferation and eosinophilic inflammatory infiltrates were present as the characteristic feature of lesions. ABC results demonstrated that the lesions showed fibroblastic, myofibroblastic and dendritic cell signs. Conclusions IFPs are rare, benign tumors that can arise throughout the digestive tract, with unique histological changes in pathology. Surgical excision or endoscopic removal is the main treatment.