首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 187 毫秒
1.
目的:检测居民厨房内烹调烟雾冷凝物的DNA损伤作用,为全面评价烹调烟雾的遗传毒性提供依据。方法:应用人外周血淋巴细胞非程序DNA合成方法,检测菜油、豆油的烹调烟雾冷凝物对细胞的DNA损伤作用。结果:菜油烹调烟雾冷凝物在加S9、检测浓度为0.125mg·ml1及不加S9、检测浓度为0.250mg·ml1时,其cpm值与阴性对照组相比,存在显著性差异;豆油烹调烟雾冷凝物在加S9和不加S9两种情况下、检测浓度为0.250mg·ml1时,其cpm值与阴性对照组有显著性差异。两种食用油烹调烟雾冷凝物的DNA放射比活性值均随测试浓度的增加而升高。结论:菜油和豆油的烹调烟雾冷凝物具有DNA损伤作用,且具有一定的剂量-效应关系。  相似文献   

2.
烹调烟雾冷凝物的DNA损伤作用   总被引:1,自引:0,他引:1  
目的;检测居民厨房内烹调烟雾冷凝物的DNA损伤作用,为全面评价烹调烟雾的遗传毒性提供依据。方法:应用人外周血淋巴细胞非程序DNA合成方法,检测菜油,豆油的烹调烟雾冷凝物对细胞的DNA损伤作用。结果;菜油烹调烟雾冷凝物的在加S9,检测浓度为0.125mg.ml^-1及不加S9,检测浓度为0.250mg.ml^-1时,其cpm值与阴性对照组相比,存在显著性差异;豆油烹调烟雾冷凝物在加S9和不加S9两种  相似文献   

3.
猕猴桃果汁抗环磷酰胺致突变作用及其机制   总被引:12,自引:0,他引:12  
目的;研究猕猴桃果汁抗环磷酰胺(CP)的致为作用及其可能的作用机制。方法:测定大鼠外周血双核淋巴细胞微核细胞率及肝中超氧化物歧化酶(SOD)活性,还原型谷光甘肽(GSH)、丙二醛(MDA)含量。结果;猕猴桃果汁对CP诱发的大鼠外周血双核淋巴细胞微核细胞率有显抑制作用,能明显诱导大鼠肝SOD活性增强,以及GSH的含量增加,降低MDA含量。大鼠外周血双核淋巴细胞微核细胞率与SOD活性及GSH含量呈明  相似文献   

4.
目的:研究猕猴桃果汁抗环磷酰胺(CP)的致突变作用及其可能的作用机制。方法:测定大鼠外周血双核淋巴细胞微核细胞率及肝中超氧化物歧化酶(SOD)活性,还原型谷光甘肽(GSH)、丙二醛(MDA)含量。结果:猕猴桃果汁对CP诱发的大鼠外周血双核淋巴细胞微核细胞率有显著抑制作用,能明显诱导大鼠肝SOD活性增强,以及GSH的含量增加,降低MDA含量。大鼠外周血双核淋巴细胞微核细胞率与SOD活性及GSH含量呈明显负相关,与MDA含量呈明显正相关。结论:猕猴桃果汁抗CP致微核形成作用的机制可能与通过提高机体抗氧化防御系统的功能,防止有害自由基对细胞内生物大分子的损伤有关。  相似文献   

5.
应用TBA比色法和亚硝酸盐法测定了胃癌患者及健康对照个体(各11名)外周血中LPO含量和Mn-SOD活性,观察了患者及对照个体外周血淋巴细胞的MN率。结果表明,患者外周血中LPO含量、Mn-SOD活性及MN率均高于对照组,差异非常显著(P<0.01)。  相似文献   

6.
测定了52例消化道肿瘤患者(21例结肠癌,21例胃癌,10例食管癌)外周血淋巴细胞、粒细胞的铜锌超氧化物歧化酶(CuZnSOD)、锰超氧化物歧化酶(MnSOD),并与48例健康人进行了比较。肿瘤患者粒细胞总SOD、MnSOD、CuZnSOD活性均显著高于对照组,淋巴细胞总SOD活性亦较对照组显著升高。淋巴细胞SOD活性以及MnSOD含量远大于粒细胞。提示肿瘤患者淋巴细胞和粒细胞SOD活性增高可能与免疫功能有关,值得进一步探讨。  相似文献   

7.
本研究通过大鼠连续吸入平均浓度为38mg/m3的烹调油烟(COF)染毒,观察三个不同时相吸入烹调油烟对大鼠肝、肺SOD酶活性与MDA含量的变化,分析其变化的规律。结果表明:烹调油烟具有脂质过氧化作用,且随着染毒时间的延长,MDA含量增高,SOD酶活性下降,与染毒相关,相关系数分别是0.99,-0.92;与阴性对照组相比,差异有显著性(P<0.05)  相似文献   

8.
豚鼠45只,随机分为3组,第1组为正常对照组,第2组为肌注庆大霉素(GM组),第3组在肌注GM的同时,腹腔注射二甲亚砜(GM+DMSO组),以探讨DMSO对GM耳毒性的预防作用,结果表明:GM+DMSO组动物耳蜗神经动作电位(AP)阈值较GM组明显为低,AP(N1)潜伏期GM的组较GM+DMSO组显著延长,耳蜗铺片显示:GM+DMSO组外毛细胞受损程度较GM组明显为轻。提示DMSO可有效地减轻GM  相似文献   

9.
目的:探讨马蔺子素提高钐153乙二胺四甲撑膦酸(153SmEDTMP)治疗鼻咽癌(NPC)骨转移的可能性。方法:NPC多发性骨转移瘤40例,随机分为153SmEDTMP内照射治疗组和马蔺子素与153SmEDTMP联合治疗组各20例。结果:单纯内放疗组显效率为35%,联合治疗组显效率为75%;肿瘤无进展生存时间分别为(38±20)月和(76±31)月,2组比较差异有显著性(P<0.05)。血液学毒性和外周血T淋巴细胞亚群值的差异无统计学意义(P>0.05)。结论:马蔺子素可以提高153SmEDTMP治疗NPC骨转移的效果,对内照射治疗有增敏作用。  相似文献   

10.
目的:通过对饮食从业人员外周血T淋巴细胞亚群、B淋巴细胞数量分析来了解烹调烟雾对机体免疫功能的影响。方法:采用直接荧光法,通过流式细胞仪分析人外周血T淋巴细胞亚群、B淋巴细胞数量。结果:经成组t检验,作为烹调烟雾暴露组的红案工外周血T淋巴细胞百分率明显低于对照组白案工,工龄在7年以上被调查者中红案工CD4^ CD8^-T细胞百分离、CD4^ /CD8^ 细胞之值明显低于白案工,而B淋巴细胞百分离之间差异无统计意义;多因素逐步因归分析表明,暴露与否是影响T淋巴细胞总数的主要因素且与工龄有关。结论:长期暴露于烹调烟雾对机体的细胞免疫功能有一定抑制作用。  相似文献   

11.
Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P < 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (>0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P <0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P < 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.  相似文献   

12.
Objective: To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods: SD rats served as both donors and recipients. 4℃ sodium lactate Ringer's was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava (IVC) inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results: Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion: This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.  相似文献   

13.
FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…  相似文献   

14.
目的:评价使用安心颗粒对急诊经皮冠状动脉介入术(PPCI)术后生活质量的影响.方法:将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组(术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次)和对照组(仅接受基础药物治疗).所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表(MIDAS)、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果:入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异(P>0.05);出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低(P<0.05);组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低(P<0.05).两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血(P>0.05).两组发生轻度血小板减少症的患者数比较无差异(P>0.05).结论:PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.  相似文献   

15.
Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P<0.01);the MAP decreased(P<0.01)and the HR increased drastically(P<0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.  相似文献   

16.
Objective:To investigate the gene expression of osteoprotegerin(OPG) and osteoclast differentiation factor(ODF) in the bone tissue of patients with hip fracture due to osteoporosis. Methods:OPGmRNA and ODFmRNA in the bone tissue in 50 cases of osteoporosis sufferers(over 50 years old) with hip fracture(Observer Group) and 30 cases of hip facture sufferers with no osteoporosis(Control group) were analyzed with the Semi-Quantitative RT-PCR method. Results:The mRNA expressed of ODF, OPG were both high in the patients with hip fracture. In the control group, the expression of OPG mRNA was observed, while the expression of ODF mRNA was very slight. Conclusion:Aged patients contained all signals including OPG, ODF that are essential for inducing osteoclastogenesis and promoting bone resorption.  相似文献   

17.
Objective:To investigate the clinical features, pathological characteristics and immunophenotype of solid-pseudopapillary tumor of the pancreas(SPTP). Methods:Nine surgically treated cases of SPTP were retrospectively reviewed. Hematoxylin and Eosin(HE) staining and immunohistochemical staining were used to analyze all cases, and the general clinical data was collected. Results:Six patients were asymptomatic except for a palpable mass. Two patients complained of vague-epigastric pain. One patient appeared jaundice. The tumor was encapsulated and solid tissues alternately with cystic tissues. Histologically, the histological structure of solid portion was pseudopapillary with a fibrovascular core. Tumor cells were uniform and medium-sized which were arranged in sheets ets or nests or pseudopapillary patterns. Immunohistochemical studies demonstrated that SPTP proved positive in vimentin(9/9 cases), AAT(9/9 cases), NSE(9/9 cases), ACT(7/9 cases), CK20(2/9 cases), CgA(1/9 cases), S-100(3/gcases), PR(4/gcases), Syn(3/9 cases) and CD56(5/9cases), negative in CEA and ER. Conclusion:SPTP is a tumor predominantly occurring in young women frequently without special symptoms. This tumor has various characteristical histological patterns with different immunophenotype.  相似文献   

18.
Objective: To observe the therapeutic effects in acupunture treatment of primary dysmenorrhea combined with spinal Tui Na, and study its mechanism. Methods: Thirty cases of the treatment group were treated by acupuncture combined with spinal Tui Na, and thirty cases in the control group were treated by routine acupuncture. Results: The total effective rate was 93.3% in the treatment group, and 73.3% in the control group, with a significant difference between the two groups (P<0.05). Conclusions: Acupuncture combined with spinal Tui Na has good prospects for treatment of primary dysmenorrhea.  相似文献   

19.
In treating chronic nephropathy,Luo Lingjie,a chief physician,pays attention to regulating the balance between yin and yang,treating infection if present,and removing pathogenic factors.He prescribes gentle drugs and uses carefully strongly warming-tonifying ones,emphasizes the importance of persuading the patient to persist in treatment with medication and nurse one's health for recuperation,and is good at combined use of TCM and western medicine therapy and brings the merits of various therapies into full play,with obvious theraoeutic effects.  相似文献   

20.
Dr.Zhang Ren,the chief physician,is the chairman of Shanghai Acupuncture and Moxibustion Association.Having been engaged in medicine for about 40 years,he is experienced in treating various intractable diseases.In his long years of clinical practice,he advocates taking the TCM differentiation as the basis to seek for the acupuncture method for treatment of modern intractable diseases.The author of this essay had the fortune to follow Dr.Zhang in study.The following is a summary of Dr.Zhang's experience in the acupuncture treatment for different intractable diseases with the same therapeutic principle.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号