医用臭氧在治疗腰椎间盘突出症中相关阼用的研究进展

医用臭氧是治疗腰椎间盘突出症常用的微创方法,已取得了良好的临床疗效,注射部位包括盘内、椎旁以及椎间孔内外等。目前的研究表明,臭氧对正常的椎间盘组织和细胞可产生氧化作用。在治疗腰椎间盘突出症中的作用主要包括对髓核的直接氧化作用、调节氧化应激、调节免疫反应、激活镇痛系统和增加氧供使炎症介质减少等。其中,有些作用机制的具体作用途径尚未完全阐明,而大量的临床证据以及明确臭氧的作用途径为其临床应用的推广起到了至关量要的作用。     

Ozonized autohemotransfusion does not affect arterial vasodilation in patients with peripheral arterial disease

Ozonized autohemotransfusion has been used as a complementary therapy in patients with peripheral arterial disease (PAD). To determine whether ozone therapy could acutely modify artery vasodilatory capacity, a flow-mediated dilation test was performed at the brachial artery level before and after an ozonized autohemotransfusion in 16 patients with PAD, mean (± SD) age 55±1.8 years, and 14 healthy volunteers matched for age, sex and body mass index. Before ozonized autohemotransfusion, the mean baseline diameter of the brachial artery was higher in PAD patients than in healthy subjects (4.6±0.54 mm versus 3.6±0.54 mm, P<0.001) while mean flow-mediated brachial artery dilation and percentage of increase in flow were significantly lower in PAD patients than in controls (6.3±6.1% versus 11.8±2.4%, P<0.02; 433±61% versus 580±46%, P<0.02, respectively). No significant changes were observed after ozonized autohemotransfusion, indicating that ozonized autohemotransfusion does not modify endothelium-dependent ischemia-induced vascular reactivity.     

CT区域定位和X线引导下射频消融联合臭氧注射治疗腰椎间盘突出症的疗效比较

【目的】比较X线引导和CT区域定位经皮穿刺射频消融联合臭氧注射治疗腰椎间盘突出症（LDH）的临床效果。【方法12009年6月至2012年4月将采取在x线透视引导下行射频消融联合臭氧注射治疗LDH63例定为A组;将区域定位CT引导下行射频消融联合臭氧注射治疗LDH49例定为B组。依据视觉模拟疼痛评分（VAS）及Macnab评价标准评估治疗效果,观察术前、术后1周、3个月、12个月VAS评分及术后12个月优良率。【结果】两组术后VAs评分与本组术前比较均有显著下降（P〈0．05）,术后1周、3个月、12个月两组VAS评分B组稍低于A组,但差异无统计学意义（P〉0．05）;术后各时段B组优良率均显著优于A组,差异有统计学意义（P〈0．05）。【结论】术前“区域定位”能够将椎间盘突出位置量化,准确把握适应证;术中CT引导能够为靶点射频热凝确定准确的穿刺路径及深度,使射频消融联合臭氧注射技术疗效最大化,对提高微创治疗LDH的优良率有重要临床意义。     

臭氧对糖尿病神经病理性疼痛大鼠的镇痛作用

目的:探讨臭氧皮下注射对糖尿病神经病理性疼痛大鼠的镇痛作用。方法:Wistar大鼠,单次腹腔注射链脲菌素65 mg/kg,同时给予高糖高脂饮食复制糖尿病神经病理性疼痛模型。造模2周后,将20只模型大鼠随机均分为糖尿病神经病理性疼痛组(DNP组)和臭氧治疗组(O3组),另取同时饲养的10只大鼠作为对照组(C组)。O3组于模型成功后6周内每3天进行一次皮下臭氧注射(35μg/ml,0.5 ml),其余两组同样时间点注射同剂量空气。在气体注射前、注射后第2、4和6周分别测定大鼠右后足缩足反应阈值(paw withdraw threshold,PWT)、热缩足潜伏期(paw withdraw latency,PWL)、运动神经传导速度(motor nerve conduction velocity,MNCV)和感觉神经传导速度(sensorynerve conduction velocity,SNCV)。结果:与C组比较,DNP组大鼠在第2周末,PWT和PWL明显低于C组(P<0.05),差异有统计学意义。O3组在第2、4、6周注射臭氧后PWT和PWL显著升高,同时MNCV和SNCV也有显著升高(P<0.05)。结论:35μg/ml臭氧皮下注射可减轻DNP大鼠后足PWT、PWL,改善MNCV和SNCV,对糖尿病神经病理性疼痛大鼠有镇痛作用。     

经皮关节腔内臭氧注射治疗动物骨关节炎的组织与超微结构观察研究

目的观察关节腔内注射臭氧对关节炎关节软骨的病理影响，以探讨直接关节腔内注射臭氧疗法的可行性。方法对诱发性动物关节炎关节腔内注射高中低三组不同浓度医用臭氧，观察关节软骨病理变化情况。结果根据Mankin’s评分标准对关节软骨进行评分，分数越高表明关节软骨损伤越重，实验中正常关节软骨为0．0±0．0，模型组评分明显高于正常组（P〈0．01），治疗组评分明显高于模型组（P〈0．01）并且高剂量治疗组评分明显高于中低剂量组（P〈0．01）。结论实验表明长期重复关节腔内注射臭氧对关节软骨有损伤作用，且损伤程度随臭氧浓度的增加而加重。     

QD-70型臭氧消毒机对空气消毒效果试验观察

[目的]观察消毒因子为臭氧的QD-70型空气消毒机在空气消毒过程中，空间内臭氧浓度和对微生物的消毒效果。[方法]采用模拟现场实验和现场实验的方法进行了实验研究，并检测开机不同时间实验室内臭氧浓度。[结果]开机30min实验室内臭氧平均浓度达到4．63mg／m^3；开机30min和90min对空气中自色葡萄球菌平均杀灭率分别为99．99％和100．00％；现场试验中开机2h，对空气中自然菌的平均消亡率可达93．66％。[结论]该臭氧消毒机对空气消毒高效、可靠。     

臭氧与胶原酶联合治疗腰椎间盘突出症的临床应用价值

目的观察DSA引导下臭氧与胶原酶联合治疗腰椎间盘突出症的临床应用价值。方法56例腰椎间盘突出症患者在DSA监视引导下，经患侧后方穿刺成功后，病变椎间盘注射60μg/mL O3 20～30mL，盘外及神经根周围注入浓度为30μg/mL O3 10-20mL，后经骶管裂孔穿刺置管于硬膜前间隙病变椎间盘处注射600～1200U胶原酶。结果术后随访1个月、3个月，3个月获得最佳疗效，其优、良、中、差率分别为62．3％、32．1％、3．9％、1．7％，优良率94．4％。结论DSA引导下臭氧与胶原酶联合治疗腰椎间盘突出症，在作用机制上优势互补，是一种安全、有效的方法。     

Laboratory study of heterogeneous ice nucleation in deposition mode of montmorillonite mineral dust particles aged with ammonia, sulfur dioxide, and ozone at polluted atmospheric concentrations

Heterogeneous ice nucleation in deposition mode of montmorillonite mineral dust aerosol particles exposed to atmospheric trace gases (ammonia, sulfur dioxide, and ozone) was studied at temperatures warmer than −40°C with a continuous flow diffusion chamber. Pure and typical polluted atmospheric concentrations of ammonia, sulfur dioxide, and ozone gases were used to age montmorillonite mineral dust aerosol particles at room temperature and atmospheric pressure in a stainless steel chamber. Ammonia-, sulfur dioxide-, and ozone-exposed montmorillonite mineral dust aerosols act as ice nuclei in heterogeneous deposition freezing at warmer temperatures than required for homogeneous freezing. The ice nucleation efficiency of montmorillonite mineral dust aerosols increased about two times due to exposure to ammonia at a typical atmospheric concentration of about 100 ppt. This is the first experimental evidence for the enhancement of the ice nucleation efficiency of montmorillonite mineral dust aerosols by ammonia gas at typical atmospheric concentrations. Montmorillonite exposure to either pure (100%) or 45 ppm sulfur dioxide or to ozone at 200 ppb shows no clear evidence for changing the ice nucleation efficiency of montmorillonite mineral dust particles. Thus, we conclude that enhancements atmospheric trace gases (e.g., sulfur dioxide and ozone) due to anthropogenic activities have no significant impact on the heterogeneous ice nucleation of montmorillonite mineral dust particles.     

Ozone air pollution and daily mortality in Genoa, Italy between 1993 and 1996

The association between ozone (O3) and daily mortality was investigated in Genoa, an Italian city characterized by a Mediterranean climate and a high prevalence of elderly inhabitants. The O3 effect, adjusted for long time trend, seasonality and weather, was assessed using Poisson regression modelling, allowing for overdispersion and autocorrelation, and expressed as mean variation percent of daily mortality per 50 microg/m3 increase (MV). Significant MVs for overall (+4.0%) and cardiovascular (+7.2%) mortality were detected at 1-day lag. The effects were stronger in the warmer season (May-October). Similar estimates were found after restricting the analyses to the elderly (>or=75 years). Furthermore, in this group, higher MVs were observed for total mortality at 2-day lag. A statistically significant synergistic effect between O3 and temperature was observed for cardiovascular mortality, particularly in elderly people, with an evident increase in mortality risk above 26 degrees C (MV +30.0% for the whole population and +40.0% for the elderly, respectively). This investigation highlights the importance of taking local climatic and demographic features into account when comparing different time-series studies, and substantiates the influence of photochemical pollution on mortality trends in small urban areas.     

Potential Oxidative Stress in the Bodies of Electric Arc Welding Operators： Effect of Photochemical Smog

INTRODUCTION Electric arc welding is widely used in many fields such as welding engineering, architectural engineering, automotive industry, boat and ship engineering, aerospace C…