Objectives To analyze the effect of improved oven for defluorination in coal-burning endemic fluorosis areas in China, and to provide evidence for the prevention and control of fluorosis. Methods Electronic databases including CNKI, CBM, VIP and CDMD-D (1989 to 2005), were searched. We also checked the reference lists of relevant articles. We selected relevant articles according to the predefined inclusion and exclusion criteria. The methodological quality was assessed . Data on room heat preservation and the effect of improved oven for defluorination were collected in the surveillance spots of Three Gorges Reservoir. Correlation analyses were conducted between the improved oven and its effect parameters. Results Twelve articles of low quality met the selection criteria, of which 9 were graded C and 3 were graded D in terms of the methodological quality. A negative correlation was found between the decreasing rate of normal oven use and the decreasing rate of dental fluorosis as well as of urine fluorine (Pearson correlation coefficient r = – 0.87, – 0.63, Plt;0.01, lt;0.05, respectively). Analysis also revealed a positive correlation between room heat preservation and the decreasing rate of dental fluorosis as well as of normal oven use (the two Spearman correlation coefficients and P values were the same: r = –1.00, Plt;0.01). Conclusion High-quality studies on the effect of improved oven for defluorination in China are not available. Based on the current evidence, the improved oven for defluorination and the correct use, maintenance and house rebuilding for heat preservation may help to prevent fluorosis.
目的:比较七氟醚吸入麻醉和丙泊酚、瑞芬太尼静脉麻醉用于小儿手术的临床效果。方法:100例1～8岁的患儿随机分为丙泊酚、瑞芬太尼组(A组)与七氟醚吸入组(B组）。麻醉诱导后,A组持续输注丙泊酚和瑞芬太尼维持麻醉,B组吸入七氟醚维持麻醉。术中根据生命体征调整丙泊酚、瑞芬太尼的输注速度及七氟醚的吸入浓度,记录术中循环变化、术后麻醉恢复情况。结果:与B组相比,A组术中MAP下降明显(Plt;005)。结论:与A组相比,B组术中生命体征控制平稳;术后清醒迅速、完全、平稳,拔管时间无明显差异。
Objective To investigate the effect of long-term intraocular retention of domestic perfluorocarbon liquid (PFCL) on morphology and histology of ocular tissues. Methods A total of 18 New-Zealand rabbits were randomly divided into 3 experimental groups, whose left eyes underwent intraocular injection with 0.3, 0.6, and 1.0 ml PFCL, respectively. All of the right eyes of the rabbits were in the control group. The morphological, electrophysiological and histological changes of the ocular tissue were observed 4, 8, and 12 weeks after the injection. Results No clinically significant retinopathy but only mild morphological changes were found in group 1 and 2, while obvious morphological and histological changes were found in group 3. Mild morphological and histological changes were found in all of the rabbits 4-8 weeks after the injection while significant ones were found 8-12 weeks after the injection. The results of electroretinography indicated a statistically significant decline of amplitude of b wave in group 3. Conclusions Long-term intraocular retention of few PFCL may cause mild histological changes but not affect the clinical function. Plentiful PFCL remains in eyes may lead to toxic reaction to the ocular tissue. (Chin J Ocul Fundus Dis, 2006, 22: 128-130)
OBJECTIVE To compare the permeability and incidence rate of complication of arteriovenous internal fistula made by autogenous, homologous, and artificial Teflon blood vessels. METHODS Two hundred and forty one cases with arteriovenous internal fistula made by autogenous, homologous, and artificial Teflon blood vessels were followed up to compare the permeability and incidence rate of complication at 6 months, 1 year, 3 years, and 5 years. RESULTS The incidence rate of complication of autogenous blood vessels was lowest, it had no statistical differences compared with arteriovenous internal fistula made by homologous blood vessels. The permeability of arteriovenous internal fistula made by homologous blood vessels was highest, and it had no statistical differences compared with autogenous blood vessels. The permeability of arteriovenous internal fistula made by artificial Teflon blood vessels was lowest, but the incidence rate of complication was highest, and it had significantly statistical differences compared with arteriovenous internal fistula made by autogenous blood vessels (P lt; 0.01). CONCLUSION Arteriovenous internal fistulas made by autogenous and homologous blood vessels have high permeability and low incidence rate of complication, they are superior to the arteriovenous internal fistula made by artificial Teflon blood vessels.
Non-small cell lung cancer (NSCLC) accounts for more than 80% of lung cancer. Nowadays, gemcitabine and cisplatin in combination have been adopted as the first-line chemotherapy for patients with NSCLC. This study aimed to monitor early response to combined chemotherapy of gemcitabine plus cisplatin in a mouse model of NSCLC by using 18F-fluorodeoxyglucose and 18F-fluorothymidine small animal positron emission tomography (PET). Lewis lung carcinoma-bearing C57BL/6 mice were treated with gemcitabine-cisplatin or saline. Small animal PET with 18F-FDG and 18F-FLT was performed before (baseline) and after treatment (on Day 3), respectively. Imaging results were confirmed by histopathological studies (hematoxylin and eosin staining, Ki67 staining). Compared to the results in the control group, gemcitabine-cisplatin in the treated group significantly inhibited tumor growth (P<0.05). In the treated group, the maximum standardized uptake value (SUVmax) of 18F-FLT decreased significantly from 0.59±0.05 (baseline) to 0.28±0.05 (Day 3) (P<0.05). There was no significant difference between baseline (4.35±0.46) and that on Day 3 (4.02±0.47) on 18F-FDG SUVmax (P>0.05). The proliferation of tumor assessed by Ki67 staining decreased significantly after treatment of one dose of gemicitabine-cisplatin (P<0.05). The staining of HE showed an increase in necrotic and inflam- matory cells after the treatment. This study demonstrated that the uptake of 18F-FLT reduced more rapidly and signi-ficantly than that of 18F-FDG and was less disturbed by the increase of inflammatory cells after chemotherapy.
目的 了解成人大骨节病（KBD）患者血清中硒和氟的含量及其与大骨节病分度的相关性。 方法 2008年8月－2009年10月，采集四川阿坝壤塘县大骨节病区成人KBD患者血清标本37例，四川非大骨节病区健康成人血清39例作为对照组。血清硒的含量采用石墨炉原子吸收分光光度法进行检测，氟采用氟离子选择电极法进行检测。统计学分析组间差异有无统计学意义，同时分析硒和氟的表达水平与大骨节病分度的相关性。 结果 大骨节病组患者血清硒的表达水平明显低于健康对照组（P＜0.05）；血清氟的表达水平虽略低于健康对照组，但无统计学意义（P＞0.05）。大骨节病组患者Ⅰ度和Ⅱ、Ⅲ度间硒和氟的表达水平无统计学差异（P＞0.05）。 结论 成人大骨节病患者血清中硒水平偏低，血清氟水平与健康人无统计学差异；血清硒和氟含量与大骨节病的分度并无明显相关性。
Objective To investigate the retinal toxicity and verify the safe dose of intravitreal injecting fluconazole. Methods Twelve healthy adult white rabbits were divided at random into 6 groups：a normal control group and 5 groups received intravitreal injection of a single dose of fluconazole ranging from 10 to 200 mu;g respectively.Retinal toxicity was examined by ophthalmoscopy, electroretinography, light and transmission electron microscopy (TEM) on the third and fourteenth day after injection. Results The ultrastructures of the retinal tissues of the normal control group and fluconazole 10～150 mu;g groups were normal on the third and fourteen day after injection.The light microscopy and TEM showed that cells of all the retinal layers in the 200 mu;g group revealed apparent degenerative changes on the fourteenth day after injection, and the light microscopic picture showed the vacuolar degeneration of outer segments of photoreceptors, the nuclei in outer nuclear layer drop out into inner segments, the vacuolar degeneration of nerve fiber layer, and the proliferation of pigment epithelium. TEM revealed expansion of paranucl eus space and karyopyknosis of the bipolar cells, the swelling of nerve fibers and disappearance of the synapses in the inner plexiform layer, the vacuolation and disappearance of microvilli of the pigment epithelium cells. Conclusion The safe dose of fluconazole injected intravitreally should be 100～150 mu;g. (Chin J Ocul Fundus Dis，2000，16：139-212)
目的:探讨甲氨蝶呤联合依那西普(MTX+ETA)和甲氨蝶呤联合来氟米特(MTX+LEF)治疗重度活动的类风湿关节炎(RA)的疗效差异。方法:收集重度活动的RA患者50例。A组24例,给予MTX 10mg/次,一周一次,口服,联合ETA 25mg/次,一周2次,皮下注射后病情缓解后依那西普减量为25mg/次,1周一次至随访结束;B组26例,给予MTX 10mg一周一次联合来氟米特20mg/d。两组随访时间为24周。定期随访其红细胞沉降率(ESR)、C反应蛋白(CRP)、DSA28评分、sharp评分、RF、ANA、ACR核心标准评定。结果:①A组在治疗半年前后其VAS评分、晨僵时间、关节肿痛个数、DSA28评分、HAQ、患者评分、医生评价、ESR、CRP方面改善明显,有统计学意义(Plt;0.05);B组在治疗半年前后其VAS评分、晨僵时间、关节肿痛个数、DSA28评分、HAQ、患者评分、医生评价方面改善明显,有统计学意义(Plt;0.05);A组和B组在治疗半年后在VAS评分、晨僵时间、关节触痛个数、DSA28评分、HAQ、患者评分、医生评价、ESR、CRP方面改善明显,有统计学意义(Plt;0.05)。②各组ACR20有效率逐步增加,在各随访期内两组的ACR20的达标率的差异无明显的统计学意义(Pgt;0.05);ACR50则在第4、20、24周,A组的达标率为12%、79%、87%与B组的8%、46%、50%差异有统计学意义(Plt;0.05);ACR70虽然在各期A组均高于B组,但差异均无差异性(Pgt;0.05)。③A组在第2、4、12周DSA28指数下降明显,跟前次随访指标的差异有统计学意义(Plt;0.05);B组在第16、24周DSA28指数下降明显,跟前次随访指标的差异有统计学意义(Plt;0.05);而A组与B组同期DSA28的比较发现,A组从第4周起各期DSA28分值均低于B组,且差异均有统计学意义(Plt;0.05)④两种治疗方案不良反应发生情况均低,且两组不良事件发生率差异无统计学意义。结论:ETA+MTX和LEF+MTX联合治疗重度活动的RA均是安全有效的,其中前者常常可以更早期的达到诱导缓解病情的目的。
ObjectiveTo systematically review the safety of propofol versus sevoflurane for pediatric surgery. MethodsEMbase, PubMed, The Cochrane Library, CSCD, CNKI, WanFang Data were searched to collect randomized controlled trials (RCTs) about propofol versus sevoflurane for pediatric surgery from inception to January 2015. Two reviewers independently screened literature, extracted data, and assessed the risk of bias of included studies. Then metaanalysis was performed by using RevMan 5.3 software. ResultsFifteen RCTs involving 1 065 children were included finally. Meta-analysis results showed that, compared with the sevoflurane group, the propofol group could reduce the incidence of emergence agitation (OR=0.23, 95%CI 0.16 to 0.34, P<0.000 01) and the incidence of postoperative vomiting (OR=0.32, 95%CI 0.20 to 0.51, P<0.000 01). There were no significant differences between the two groups in extubation time (MD=0.98, 95%CI -0.26 to 2.21, P=0.12), eye-opening time (MD=3.32, 95%CI -2.65 to 9.29, P=0.28) and postoperative analgesic requirements (OR=0.60, 95%CI 0.30 to 1.23, P=0.16). ConclusionIn reducing the incidence of emergence agitation and postoperative vomiting, propofol is superior to sevoflurane, so propofol is safer than sevoflurane for children's surgery.