Search

Experimental study on establishment of mouse model of combined pulmonary fibrosis and emphysema

ObjectiveTo study the possbility of using intranasal instillation of fine particulate matter (PM2.5) combined with inhalation of ozone (O3) to establish mouse model of combined pulmonary fibrosis and emphysema (CPFE), and to provide a reference for the establishment of CPFE model.MethodsMale C57/BL6 mice were divided randomly into phosphate buffer saline (PBS) intranasal instillation+air inhalation group, PBS intranasal instillation+O3 inhalation group and PM2.5 intranasal instillation+O3 inhalation group, with 8 mice in each group. The mice were intranasally instilled with PBS or PM2.5 suspension (7.8 mg/kg) followed by air or ozone inhalation 24 hours later, twice a week over 8 weeks. Lung function, bronchoalveolar lavage fluid (BALF) cell counts and classification were detected, the pathological changes of lung tissues in hematoxylin-eosin staining were observed, including inflammation scores and mean linear intercept (Lm). The thickness of collagen deposition in subepithelium was measured in lung tissues in Masson staining, and simultaneously hydroxyproline contents in lung tissues were determined.ResultsCompared to PBS instillation+air inhalation group, inspiratory capacity (IC), total lung capacity (TLC) and chord compliance (Cchord) were increased, FEV25 (the forced expiratory volume at 25 ms)/FVC (forced vital capacity) was decreased, total cell counts in BALF, Lm and lung inflammatory scores were increased, the thickness of the subepithelial collagen layer (SEc/Pbm) or hydroxyproline contents was not changed in PBS instillation +O3 inhalation group; IC was decreased, functional residual capacity (FRC) was increased, TLC was increased, Cchord was decreased, FEV25/FVC and FEV50 (the forced expiratory volume at 50 ms)/FVC were decreased, total cell counts in BALF, Lm, lung inflammatory scores, SEc/Pbm and hydroxyproline contents were increased in PM2.5 instillation+O3 inhalation group. Compared to PBS instillation+O3 inhalation group, IC was decreased, FRC was increased, Cchord was decreased, FEV25/FVC and FEV50/FVC were decreased, total cell counts in BALF, Lm, lung inflammatory scores, SEc/Pbm and hydroxyproline contents were increased in PM2.5 instillation +O3 inhalation group.ConclusionCPFE mouse model can be successfully established by PM2.5 intranasal instillation combined with ozone inhalation for consecutive 8 weeks.

醫用臭氧聯合應用膠原酶與單純應用膠原酶治療腰椎間盤突出癥早期療效的比較

目的 研究醫用臭氧（O3）對膠原酶治療腰椎間盤突出癥早期療效的影響。 方法 回顧性分析2009年－2013年108例腰椎間盤突出癥患者，將其分為單純應用膠原酶組（A組）和O3聯合應用膠原酶組（B組）。兩組患者均經椎板間孔入路穿刺，并將針尖調整至病變椎間盤突出物內，A組單純注入膠原酶溶液1 mL（含膠原酶600 U）；B組先注入50 mg/L O3 15 mL，15 min后再注入膠原酶溶液1 mL（含600 U）。根據視覺模擬評分（VAS）及改良MacNab法比較術后3 d、1周及1個月患者疼痛的程度及療效。 結果 B組術后3 d及1周VAS評分顯著低于A組（P＜0.05），術后1個月VAS評分無統計學意義（P＞0.05）；B 組術后3 d及1周有效率分別為71.2%和88.5%，明顯高于A組51.7%和71.4%，而術后1個月有效率無統計學意義（P＞0.05）。 結論 O3聯合應用膠原酶治療腰椎間盤突出癥早期療效明顯優于單純應用膠原酶。

臭氧對糖尿病大鼠視網膜結構及缺氧誘導因子-1α表達的影響

Efficacy and safety of major ozonated autohemotherapy in the treatment of ischemic stroke: a meta-analysis

ObjectiveTo systematically review the efficacy and safety of major ozonated autohemotherapy in the treatment of ischemic stroke.MethodsPubMed, EMbase, The Cochrane Library, Web of Science, CBM, WanFang Data, VIP and CNKI were electronically searched to collect randomized controlled trials (RCTs) of the efficacy and safety of major ozonated autohemotherapy in the treatment of ischemic stroke from inception to July 1st, 2020. Two reviewers independently screened literature, extracted data and assessed risk of bias of included studies. Meta-analysis was then performed by using RevMan 5.3 software.ResultsA total of 25 RCTs involving 3 681 patients were included. The results of meta-analysis showed that the major ozonated autohemotherapy combined with conventional therapy in the treatment of patients with ischemic stroke in terms of total effective rate (RR=1.20, 95%CI 1.15 to 1.25, P<0.001), national institutes of health stroke scale (MD=?3.15, 95%CI ?4.72 to ?1.59, P<0.001), total cholesterol (MD=?1.00, 95%CI ?1.48 to ?0.53, P<0.001), triglyceride (MD=?0.74, 95%CI ?1.04 to ?0.43, P<0.001), low-density lipoprotein cholesterol (MD=?0.65, 95%CI ?1.22 to ?0.09, P=0.02), and activity of daily living (MD=11.97, 95%CI 4.48 to 19.47, P=0.002) were superior to the conventional treatment group. There was no significant difference between the two groups in high-density lipoprotein cholesterol (MD=0.25, 95%CI ?0.46 to 0.96, P=0.49) and the incidence of adverse effects (OR=3.15, 95%CI 0.93 to 10.63, P=0.06).ConclusionsThe major ozonated autohemotherapy can significantly improve the prognosis of patients with ischemic stroke while not affecting the adverse effects. Due to the limited quality and quantity of the included studies, more high-quality studies are needed to verify the above conclusions.

Study on the Effect of Odor Removal by Ozone

目的:利用臭氧對糞便處理車間的臭氣物質進行氧化分解時,臭氧的除臭效果和臭氧的適宜濃度。方法:在對京東某糞便處理車間大規模現場測試(官能法,化學法)的基礎上,確定糞便處理車間的惡臭污染源,計算出臭氧氧化法的除臭效率。 結果:針對臭氣成份與臭氧反應速度,繪制出了在糞便處理車間臭氣濃度以及臭氣主要成份硫化氫和氨隨時間的衰減曲線;臭氧發生器啟動后,臭氣濃度迅速衰減,在第一個小時內臭氣濃度衰減率為74%,硫化氫在第一個小時濃度衰減率為29%,第二個小時濃度衰減率為58.9%,氨2小時后總衰減率為56.8%;臭氧除臭時,糞便處理車間臭氧濃度應控制在0.03 ppm,此時臭氣濃度為150,臭氣強度為3級。 結論:該項研究為臭氧除臭裝置和糞便處理車間利用臭氧氧化法除臭提供了設計依據。

The Effect of Medical Ozone on Lung Tissue of Pulmonary Fibrosis Rats

ObjectiveTo explore the feasibility of medical ozone in treatment of pulmonary fibrosis. MethodsForty Wistar rats were randomly divided into an experimental group and a control group, with 20 rats in each group.All rats were intratreacheally instilled with bleomycin to induce pulmonary fibrosis.Then the rats were intraperitoneally injected with physiological saline every other day in the control group, and with medical ozone every other day in the experimental group.After 28 days, 10 rats in each group were sacrificed after lung function test.Right lung tissues were sampled for pathological examination, and left lung tissues were sampled for measurement of superoxide dismutase (SOD) and hydroxyproline.The remaining 10 rats in each group continued to be normally fed and intraperitoneally injected for observation of the survival time. ResultsThe lung function of the control group significantly decreased compared with the experimental group.The degree of lung fibrosis in the control group was more severe than that in the experimental group (lung fibrosis score: 1.9±0.5 vs.1.2±0.4, P < 0.05). The level of SOD in lung tissue was significantly higher and the level of hydroxyproline was significantly lower in the experimental group compared with the control group [(208.48±29.37)U·mg-1·pro-1 vs.(163.34±21.42) U·mg-1·pro-1, (2.25±0.28) mg/g vs.(2.68±0.37) mg/g, P < 0.05].The rats in the experimental group had longer survival time compared with the control group (79 d vs.59 d, P < 0.05). ConclusionMedical ozone can delay the progress of pulmonary fibrosis in rats.

Selectivity Individualization of Curing Lumbar Intervertebral Disc Protrusion by Combined Minimally Invasive Techniques

摘要:目的:探討聯合應用激光汽化減壓(percutaneous laser disc discompression,PLDD)、射頻熱凝靶點消融、臭氧注射治療腰椎間盤突出癥的的個體化選擇。方法: 自2006年6月,在CT引導下選擇性聯合應用PLDD、射頻和臭氧治療腰椎間盤突出癥患者267例,突出椎間盤的特點個體化選擇穿刺路徑和治療方法;其中PLDD聯合臭氧治療92例(A組),射頻聯合臭氧治療67例(B組),PLDD、射頻和臭氧三者聯合治療108例(C組)。結果:所有患者均順利完成手術,于術后1周、1個月,3個月及6個月隨訪記錄VAS評分和Macanab優良率。三組患者VAS評分經方差分析,手術前、后有顯著性差異(Plt;0.05),術后1周至6個月的VAS評分統計無顯著性差異(Pgt;0.05);術后三組間VAS評分、Macanab優良率比較無顯著性差異(Pgt;0.05)。結論: 選擇性聯合應用微創技術進行個體化的立體治療,具有擴大微創手術適應癥、提高手術療效的優勢,值得推廣和利用。Abstract: Objective: To investigate the selectivity and individualization of using percutaneous laser disc discompression(PLDD) and ozone injection combined with radiofrequency thermocoagulation and target ablation curing lumbar intervertebral disc protrusion. Methods: From June 2006, 267 lumbar disc herniation cases were operated that guided by CT, the characteristic of the liable disc was confirmed by magnetic resonance imaging and CT before the procedure. 92 cases (A group) were treated by PLDD combined with ozone injection,67 case were treated by radiofrequency thermocoagulation and target ablation combined with ozone injection, 108 cases were treated by PLDD and ozone injection combined with radiofrequency thermocoagulation and target ablation. Results: All case been successfully operated, the theraptic effect was evaluated by comparing the value of VAS and excellent and good rate of therapy at preoperation and at 1 week, 1month,3 months, 6 months after operation. The value of VAS in three groups at postoperation were remarkably lower than preoperation (Plt;0.05). The excellent and good rate of therapy at 6 months was respectively 94.5％ in group A,94.0％ in group B and 95.4％ in group C,no significant difference was observed between the three groups(Pgt;0.05).Conclusion: The selectivity and individualization of using PLDD and ozone injection combined with radiofrequency thermocoagulation and target ablation curing lumbar intervertebral disc protrusion can enlarge the indication and improve the clinical curative effect, it should be spreaded in clinic.

Efficacy of oxygen therapy for diabetic foot ulcers: a network meta-analysis

Objective To systematically review the efficacy of oxygen therapy for diabetic foot ulcers (DFUs). MethodsThe PubMed, Embase, Cochrane Library, CNKI, WanFang Data, and VIP databases were electronically searched to collect randomized controlled trials (RCT) on the efficacy of different oxygen therapies for DFUs from inception to April 1, 2024. Two reviewers independently screened the literature, extracted data, and assessed the risk of bias of the included studies. Statistical analysis was performed using R software, and GraphPad Prism was used for graphical representations. ResultsA total of 61 RCTs involving 4 306 DFUs cases were included in the analysis. The oxygen therapies examined primarily included hyperbaric oxygen, topical oxygen, and ozone therapy. The surface under the cumulative ranking curve (SUCRA) indicated that hyperbaric oxygen therapy ranked highest for healing rate, area reduction rate, and healing time (SUCRA values were 0.957, 0.868, and 0.869, respectively). However, hyperbaric oxygen therapy also ranked higher for amputation rate and adverse events (SUCRA values were 0.616 and 0.718, respectively). Further subgroup analysis revealed that hyperbaric oxygen therapy maintained the highest ranking in area reduction rate across subgroups defined by publication language and treatment duration. ConclusionHyperbaric oxygen therapy has advantages in terms of healing rate, area reduction rate, and healing time for DFUs, but it is also associated with higher amputation rates and adverse events. Due to the limited quantity and quality of the included studies, more high-quality studies are needed to verify the above conclusion.

The Effects of Acute and Chronic Ozone Exposure on Inflammation,Structure and Function in Murine Lung

ObjectiveTo investigate the effects of acute and chronic ozone exposure on inflammation,structure and function in murine lung. Methods32 C57/BL6 mice were randomly divided into a single (acute) ozone exposed group,a single air exposed group,a multiple (chronic) ozone exposed group (every three days over 6 weeks),and a multiple air exposed group with 8 mice in each group.The mice were exposed to 2.5 ppm of ozone or air for 3 hours per time and sacrificed 24 hours after the last time of ozone exposure.Lung volume,low attenuation area (LAA) percentage,lung function,cell counts and malondialdehyde (MDA) in bronchoalveolar lavage fluid (BALF),8-hydroxy-2'-deoxyguanosine (8-OHdG) in serum,inflammation scores and mean linear intercept (Lm) in lung section were assessed. ResultsCompared with the single air exposed group,single (acute) ozone exposure led to increases in inflammatory cells in BALF,inflammation scores in the lung tissue,MDA in BALF and 8-OHdG in serum,but had no effect on lung volume,LAA percentage,airflow or Lm.Compared with the single (acute) ozone exposed group,the single air exposed group and the multiple air exposed group,multiple (chronic) ozone exposure increased inflammatory cells in BALF,lung volume,LAA percentage,total lung capacity and lung compliance,mediated airflow obstruction,and also increased lung inflammation socres and Lm. ConclusionAcute ozone exposure induced airway/lung inflammation and oxidative stress,while chronic ozone exposure induced airway/lung inflammation,emphysema and airflow obstruction.

The Clinical Research on Combined Glucosamine and Ozone in the Treatment of Knee Osteoarthritis

ObjectiveTo discuss the efficacy and safety of the joint application of oral glucosamine hydrochloride tablets and knee joint cavity ozone injection in the treatment of knee osteoarthritis. MethodsFrom January 2014 to January 2015, 72 patients who matched the criteria of moderate knee osteoarthritis were randomly divided into two groups according to the table of random number: oral glucosamine hydrochloride tablet and knee joint cavity ozone injection group (group G+O) and ozone group (group O). Patients of group G+O orally took glucosamine hydrochloride tablets (0.48 g, 3 times/day) for twelve weeks, and ozone was injected into the patients’ knee joint once a week for the first four weeks. The treatment for group O patients was the same with Group G+O, except that the glucosamine hydrochloride tablets were replaced by glucosamine hydrochloride placebo (2 tablets, 3 times/day, taking orally). We recorded the Visual Analogue Scale (VAS) score, Western Ontario & McMaster University (WOMAC) osteoarthritis index score and the adverse reactions before treatment and in the first, third and sixth month after treatment. ResultsPatients’ VAS scores and WOMAC scores of both the two groups in the first, third and sixth month after treatment were significantly different from those before the treatment (P ＜ 0.05) . In the first month after treatment, there were no significant difference in patients’ VAS scores and WOMAC scores between the two groups (P ＞ 0.05) . In the third and sixth month after treatment, there were significant differences in patients’ VAS scores and WOMAC scores between the two groups (P ＜ 0.05) . There was no obvious adverse reactions during the treatment. ConclusionsThe combined application of oral glucosamine hydrochloride tablets and knee joint cavity ozone injection and the ozone treatment for moderate knee osteoarthritis are both effective, without any adverse reaction. The combined treatment of oral glucosamine hydrochloride tablets and knee joint cavity ozone injection on moderate knee osteoarthritis has better long-term efficacy, and it is worth spreading.