The vast majority of vertebral compression fractures are caused by osteoporosis and vertebral tumor,which lead to the pain of a fracture and intervertebral height lost.In recent 20 years,the use of percutaneous vertebroplasty and percutaneous kyphoplasty,a kind of minimally invasive surgery method intended for the vertebral compression fractures,are rising up for patients with vertebral compression fractures,which can quickly relieve patients' pain and restore injured vertebral deformities.Percutaneous vertebroplasty injects bone cement into fractures through a small incision.However,percutaneous kyphoplasty injects a balloon into a fracture to make a cavity by expending and shrinking,which is filled with filler material,and then removes the balloon,and injects bone cement.This article mainly reviews development,curative effect and safety,clinical application and future aspects.of the percutaneous vertebroplasty and percutaneous kyphoplasty.

Objective:To explore the incidence,mortality,trends and time distribution of food poisoning in Hunan Province.Methods:The data on food poisoning was derived from the Information Office of Hunan Provincial Health Department.Using the trend-test and circular distribution methods,we have described the current situation of food poisoning and tested the central tendency of the peak time points and the peak time zone of food poisoning in Hunan from 2000 to 2009.Results:On average,the incidence of food poisoning in Hunan from 2000 to 2009 was 0.072 per 100000 population.And the average number of people affected in these incidents was 1.937 per 100000 population.There were no apparent trends in either the number of incidents or people affected between 2000 and 2009 (u=-0.98,P＞0.05; u=-1.34,P＞0.05,respectively).The average mortality was 0.015 per 100000 population.The trend-test indicated that the average annual mortality decreased significantly from 2000 to 2009 (u=-1.72,P＜0.05).Meanwhile the average annual fatality rate was 0.77％.The trend-test revealed statistically significant differences for the average annual fatality rate (u=-1.88,P＜0.05).The circular distribution analysis showed that there was a central tendency of the distribution of food poisoning cases,with the average peak time atAugust 28th and the average peak time zone from June 7th to November 18th for food poisoning from 2000 to 2008.Conclusion:From 2000 to 2009,there is a significant tendency in the average annual mortality and fatality rate of food poisoning in Hunan.Summer and fall are the high seasons for food poisoning.We should pay attention to the peak time zone,especially the peak time point of food poisoning for food safety monitoring,and strengthen the prevention and control on food poisoning.

Investigated the changes of crosslinking index, swelling ratio, degradation rate and cytotoxicity of genipin crosslinked gelatin accompany with crosslinking time. 1% genipin crosslinked gelatin were divided into 7 groups by crosslinking time: 10 min group, 30 min group, 1 h group, 2 h group, 12 h group, 24 h group, 72 h group. The results proved that genipin could crosslink gelatin effectively. Accompany with increasing of crosslinking time, crosslinking index increased, and swelling ratio, degradation rate decreased. In 10 min group, crosslinking index was low(26.7%), swelling ratio was high, (265%), completely degraded within 1 week. This indicated that biomaterials of 10 min group was instable and degraded easily. Compared with 10 min group, biomaterials of 30 min group changed significantly with crosslinking index(45.7%), swelling ratio (206%) and degration rate (completely degraded between 4 weeks and 8 weeks). This indicated that genipin could change the properties of gelatin within 30 min. Biomaterials after 30 min, crosslinking index increased, and swelling ratio, degradation rate decreased gradually accompanied with increasing of crosslinking time. Biomaterials of 72 h, crosslinking index was 73.1%, swelling ratio was 152%, and degradated 18.9% after 12 weeks. RGR (relative cell growth rate) of every group measured by MTT assay changed between 87.9% and 105.4%, indicated that the cytotoxicity of genipin crosslinked gelatin was very low.
Animals ; Biodegradation, Environmental ; Cell Survival ; drug effects ; Cricetinae ; Cricetulus ; Cross-Linking Reagents ; chemistry ; toxicity ; Gelatin ; chemistry ; Iridoid Glycosides ; Iridoids ; chemistry ; toxicity ; Time Factors

OBJECTIVE: To investigate the effects of Fritillariae cirrhosae bulbus on airway inflammation and ERK/MAPK signal pathway of asthma model mice, and to explore its possible mechanism of the treatment of asthma. METHODS: The asthma model was induced by egg albumin. A total of 40 model mice were randomly divided into model group (0. 5％ carboxymethyl cellulose, intragastric administration), positive control group (0. 5 mg/kg dexamethasone, intraperitoneal injection), Fritillariae cirrhosae bulbus low-dose and high-dose groups (9. 0, 18. 0 mg/kg, intragastric administration), with 10 mice in each group. Other 10 normal mice were included in normal group (0. 5％ carboxymethyl cellulose, intragastric administration). They were given medicine once a day for consecutive 28 d. After medication, the number of total cells and differential cells (neutrophils, macrophages, lymphocytes and eosinophils) in bronchoalveolar lavage fluid (BALF) of mice were counted. The pathological morphology of bronchial smooth muscle in mice was observed under light microscope, and the inflammatory score was scored; the activities of ERK, phosphorylated ERK (p-ERK), p38 MAPK and phosphorylated p38 MAPK (p-p38 MAPK) were measured by ELISA. The protein expression of ERK, p-ERK, p38 MAPK and p-p38 MAPK in lung tissue were determined by Western blot assay. mRNA expression of ERK and p38 MAPK were determined by real time fluorescent quantitative PCR. RESULTS: Compared with normal group, the number of total cells and differential cells in BALF of mice, inflammation score, the activities of p-ERK and p-p38 MAPK in lung tissues were increased significantly of mice in model group (P<0. 01); the protein expression of p-ERK and p-p38 MAPK, mRNA expression of ERK and p38 MAPK were increased significantly in lung tissue of mice in model group (P<0. 01). Compared with model group, above indexes of treatment groups were all improved significantly (P<0. 05 or P<0. 01). CONCLUSIONS: Fritillariae Cirrhosae Bulbus can improve airway inflammation in asthma model mice, the mechanisms of which may be related to inhibiting the activation of ERK/MAPK signal pathway.

OBJECTIVE: To evaluate the rationality and validity of weighted TOPSIS method and weighted RSR method to evaluate drug supervision and supply networks construction in rural areas of Hunan . METHODS: Data of drug network construction in rural Hunan in 2010 were used to establish a comprehensive evaluation model, and weighted TOPSIS and RSR method were applied to this model and the results of which were compared to that of synthetical scored method to examine the validity. RESULTS: A comprehensive evaluation model was established, comprising of 3 primary indices, 8 secondary indices and 56 tertiary ones. The result of weighted RSR method was highly correlated to that of synthetical scored method, yet the result of TOPSIS was less correlated to the formers. All correlations were significant (P<0.01). CONCLUSION Both weighted RSR and TOPSIS are not perfect methods, but the application of the methods in drug network evaluation is scientific and effective.
China ; Computing Methodologies ; Decision Support Techniques ; Fees and Charges ; Models, Theoretical ; Pharmaceutical Preparations ; standards ; supply & distribution ; Rural Health Services

OBJECTIVETo increase local blood supply of bone graft, a novel posterior lumbar spine fusion method with orthotopic paraspinal muscle-pediculated bone flaps was constructed, and the fusion rate and clinical effect.were observed.

METHODSFrom June 2007 to December 2010, 117 patients of lumbar spinal stenosis or lumbar destabilization treated with the novel posterior lumbar fusion method were studied, 49 males and 68 females, aged from 40 to 77 years, average 61.5 years. Clinical effect was evaluated by JOA and VAS score preoperatively and postoperatively, and the fusion result was evaluated by three-dimensional CT reconstruction postoperatively.

RESULTSSeventeen cases lost of follow up, the rest were followed up from 7 to 38 months, average 19 months. There was significant difference between pre- and postoperative JOA and VAS score (P < 0.01), the preoperative JOA score was 10.3 ± 1.9, and 25.4 ± 4.2 at the latest follow-up, the improvement rate was 81.0% ; the preoperative VAS score was 8.5 ± 0.8, and 2.3 ± 0.4 at the latest follow-up. The three-dimensional CT reconstruction showed that 126 of the 133 segments formed solid fusion in 100 patients who completed the follow-up, the fusion rate was 94.7%.

CONCLUSIONThe novel posterior lumbar fusion method make the bone graft position more precise, stable and increases the fusion rate, which can effectively reduce pseudarthrosis and have a promising clinical effect.

Adult ; Aged ; Bone Transplantation ; Female ; Follow-Up Studies ; Humans ; Lumbar Vertebrae ; Male ; Middle Aged ; Spinal Fusion ; methods ; Spinal Stenosis ; surgery ; Treatment Outcome