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Endogenous vasoactive mediators in defense of portal hypertensive gastric mucosa 内源性血管活性介质在门脉高压胃粘膜防御中的作用
Pub Date : 2015-01-01 DOI: 10.5455/JEIM.290115.RW.010
Paula R. S. Camara
The inflammatory mediators can alter the integrity of mucosa by effectively influencing the various components of the mucosal defense, which are a combination of factors that allow the mucosa withstand exposure to substances with different types of pH range, temperature, and osmosis, solutions with detergent properties (bile) and bacterial products that can activate local and systemic inflammatory reactions. On the other hand, our previous research showed that different kinds of intragastric pH range can protect or induce gastric damage in portal hypertensive rats. When damage occurs to the mucous membrane, repair of the lesion can be activated quickly, limiting the possibility of harmful substances (bacterial products) coming into contact with the systemic circulation. The resistance of the gastric mucosa to injury depends, ultimately, on a balance between defensive factors and aggressive factors present in the lumen of the mucosa. Various components of mucosal defense can be influenced by inflammatory mediators. Some of these mediators are prostanoids, nitric oxide, endothelins, cytokines, free radicals, neuropeptides and Helicobacter pylori. These mediators contribute to both the modulation of mucosal defense and the pathogenesis of gastric mucosal injury, and will be described a little more detail in the present paper.
炎症介质可以通过有效影响粘膜防御的各种组成部分来改变粘膜的完整性,这些组成部分是多种因素的组合,这些因素使粘膜能够承受暴露于不同类型的pH范围、温度和渗透力的物质、具有洗涤剂性质的溶液(胆汁)和细菌产物,这些物质可以激活局部和全身炎症反应。另一方面,我们前期研究表明不同胃内pH范围对门脉高压大鼠胃损伤有保护或诱导作用。当粘膜发生损伤时,病变的修复可以迅速激活,限制了有害物质(细菌产物)与体循环接触的可能性。胃黏膜对损伤的抵抗力最终取决于存在于粘膜腔内的防御因子和侵袭因子之间的平衡。粘膜防御的各种成分可受到炎症介质的影响。这些介质包括前列腺素、一氧化氮、内皮素、细胞因子、自由基、神经肽和幽门螺杆菌。这些介质有助于调节粘膜防御和胃粘膜损伤的发病机制,并将在本文中更详细地描述。
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引用次数: 1
Randomized study using biotherapeutic “T.cruzi 3dH” impairs experimental infection by Trypanosoma cruzi - 使用生物治疗“T”的随机研究。克氏3dH "抑制克氏锥虫的实验感染
Pub Date : 2015-01-01 DOI: 10.5455/jeim.100515.or.130
D. L. Aleixo, F. Ferraz, L. Ciupa, W. N. S. Rodrigues, Katiucha Rebeca Jennifer Lopes Lera, M. Benvenutti, S. M. Araújo
Objective: The aim of this study was to evaluate the effect of a biotherapeutic in very low dynamization (3dH) in murine infection by Trypanosoma cruzi. Methods: Swiss male mice (Mus musculus) infected by T. cruzi Y strain were divided into three groups according to their treatment: Control infection - 7% ethanolwater solution; 3dH each day (ED) - daily biotherapeutic T. cruzi 3dH, from the day of infection until the end of experiment; 3dH single day (SD) - biotherapeutic T. cruzi 3dH, on the day of infection for 12 h. Parasitological (total parasitemia, peak of parasites, day of the peaks, prepatent period, patent period, and survival) and clinical (body temperature and body weight) parameters were evaluated. Results: No significant differences were observed among groups for parasitological evaluation. 3dH ED group presented an earlier mortality compared to control. Clinical parameters showed that animals treated with biotherapeutic had worse outcome when compared with control animals. Conclusion: The low dynamization of T. cruzi biotherapeutic worsened its murine infection by means of clinical evaluation. Considering other studies using biotherapeutic of T. cruzi, suggests the possibility for an efficacy of different dynamizations regarding oscillatory potency-effect-curves.
目的:评价一种极低活性(3dH)生物疗法对克氏锥虫感染小鼠的治疗效果。方法:将感染克氏t型虫Y株的瑞士雄性小鼠按处理方法分为3组:对照感染- 7%乙醇水溶液;每日3dH (ED) -每日克氏t细胞生物治疗3dH,从感染之日起至实验结束;单天(SD) -生物治疗克氏体3dH,在感染当日持续12 h。评估寄生虫学(总寄生量、寄生虫高峰、高峰天数、专利前期、专利期、生存期)和临床(体温、体重)参数。结果:各组间寄生虫学评价无显著差异。3dH - ED组与对照组相比死亡率较早。临床参数显示,与对照动物相比,接受生物治疗的动物预后较差。结论:经临床评价,克氏锥虫生物治疗剂活性低加重了小鼠感染。考虑到其他使用克氏锥虫生物疗法的研究,提示关于振荡电位-效应曲线的不同动力效果的可能性。
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引用次数: 1
Patterns of CD4+ T-lymphocytes and liver enzymes in adult HIV seropositive cases - 成人HIV血清阳性病例中CD4+ t淋巴细胞和肝酶的变化模式
Pub Date : 2015-01-01 DOI: 10.5455/JEIM.191115.OR.139
S. Usman, G. Agboola, N. O. Akintayo-Usman, I. Isola, Florence Chinwe Umeozulu, P. Osho, Mattew T. Oluwole
Objectives: HIV/AIDS is a rapidly growing epidemic in sub-Saharan Africa. HIV is a retrovirus that primarily infects components of the human immune system such as CD4+ T-cells, macrophages and dendritic cells. This study is therefore designed to evaluate the CD4+ T-cell count and liver enzymes of adult HIV seropositive subjects receiving Highly Active Antiretroviral Therapy (HAART) and those yet to be started on HAART as well as HIV seronegative control subjects. Methods: Serum levels of CD4+ counts of subjects were determined using flow cytometry while their serum alanine aminotransferase (ALT), aspartate aminotransferase (AST) and alkaline phosphatase (ALP) were determined using enzymatic spectrophotometric method. Results: Serum ALT was found to be significantly increased in the HAART group as compared with those of the two other groups. In addition, serum ALP was significantly increased in the HAART group as compared with the control subjects, while serum AST was higher in the HAART group as compared with the HAART naive group. Conclusion: HAART is associated with hepatotoxicity, thus, it is recommended that liver enzymes should be measured before and periodically after antiretroviral therapy is initiated and/or when HAART regimen is switched, as this will serve a good index for disease monitoring and/or progression.
目标:艾滋病毒/艾滋病是撒哈拉以南非洲迅速蔓延的流行病。HIV是一种逆转录病毒,主要感染人体免疫系统的组成部分,如CD4+ t细胞、巨噬细胞和树突状细胞。因此,本研究旨在评估接受高效抗逆转录病毒治疗(HAART)、尚未开始HAART治疗的成人HIV血清阳性受试者以及HIV血清阴性对照受试者的CD4+ t细胞计数和肝酶。方法:采用流式细胞术检测受试者血清CD4+计数水平,酶法分光光度法检测血清丙氨酸转氨酶(ALT)、天冬氨酸转氨酶(AST)和碱性磷酸酶(ALP)水平。结果:与其他两组相比,HAART组血清ALT明显升高。此外,与对照组相比,HAART组血清ALP显著升高,而HAART组血清AST高于HAART初治组。结论:HAART与肝毒性相关,因此,建议在开始抗逆转录病毒治疗前后和/或切换HAART治疗方案时定期测量肝酶,这将是疾病监测和/或进展的良好指标。
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引用次数: 1
Hemodynamic changes during tracheal intubation using propofol and rocuronium after pre-treatment with ephedrine in adult patients - 成人麻黄碱预处理后异丙酚和罗库溴铵气管插管期间血流动力学的变化
Pub Date : 2015-01-01 DOI: 10.5455/jeim.021215.or.143
Y. Gangaiah, Dinesh Rao, Stacy Merril, Sathees B. C. Chandra
Introduction: This was a prospective, randomized, placebo controlled, double blind study with the aim to determine if pre-treatment with ephedrine hydrochloride in adult patients during rapid tracheal intubation using propofol and rocuronium bromide improved intubating conditions without affecting hemodynamic parameters. Methods: One hundred adult patients, aged between 20 and 40 years, scheduled for various elective surgeries under general anesthesia were selected on the basis of a simple random sampling method. The study population was randomly divided using simple sealed envelope method into two groups, with 50 patients in each group: group EPR (ephedrine-propofol-rocuronium) and group SPR (saline-propofol-rocuronium). Patients in EPR group received ephedrine 70 µg/kg diluted to 5 ml with normal saline and the patients in SPR group received 5 ml of normal saline at the time of pre-oxygenation 3 min prior to laryngoscopy and intubation. Intubating conditions and hemodynamic parameters were assessed. Results: Pre-treatment with ephedrine hydrochloride prior to induction with propofol provided enhanced intubating conditions compared to propofol alone during rapid tracheal intubation 60 seconds after rocuronium bromide injection. However, it did not produce significant elevations of systolic and diastolic blood pressure as well as mean arterial pressure from the baseline. Pre-treatment in the EPR group resulted in an increase in the heart rate compared to the SPR group 1 min post intubation. Conclusion: The findings of the present study display that pre-treatment with ephedrine prior to propofol administration produces better intubating conditions compared to propofol alone during rapid tracheal intubation with rocuronium without significant hemodynamic changes. However, pre-treatment produced mild tachycardia, which was advantageous. It did not have any effect on the duration of laryngoscopy and the time taken for intubation.
简介:这是一项前瞻性、随机、安慰剂对照、双盲研究,目的是确定成年患者在使用异丙酚和罗库溴铵进行快速气管插管时,盐酸麻黄碱预处理是否能改善插管状况,同时不影响血流动力学参数。方法:采用简单随机抽样的方法,选取年龄在20 ~ 40岁,在全身麻醉下拟行各种择期手术的成年患者100例。采用简易密封信封法将研究人群随机分为两组,每组50例:EPR组(麻黄碱-异丙酚-罗库溴铵)和SPR组(盐-异丙酚-罗库溴铵)。EPR组患者给予麻黄碱70µg/kg,用生理盐水稀释至5 ml, SPR组患者在喉镜及插管前3 min预充氧时给予生理盐水5 ml。评估插管条件和血流动力学参数。结果:注射罗库溴铵后60秒快速气管插管时,在丙泊酚诱导前进行盐酸麻黄碱预处理比单独使用丙泊酚提供了更好的插管条件。然而,它并没有使收缩压和舒张压以及平均动脉压从基线显著升高。与SPR组相比,EPR组在插管后1分钟的预处理导致心率增加。结论:本研究结果表明,在罗库溴铵快速气管插管中,麻黄碱预处理在异丙酚给药前比单用异丙酚提供更好的插管条件,且血流动力学无明显改变。然而,预处理产生轻度心动过速,这是有利的。它对喉镜检查的持续时间和插管时间没有任何影响。
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引用次数: 1
Effects of zidovudine on hemostatic and hematologic parameters in adult rats 齐多夫定对成年大鼠止血血液学参数的影响
Pub Date : 2015-01-01 DOI: 10.5455/JEIM.080415.OR.125
U. Ukoha, Kosisochukwu E Umeasalugo, U. Dimkpa, G. Ndukwe, A. Anyabolu, Love E. Emefo
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引用次数: 4
Protective effect of aqueous extract of Xylopia aethiopica fruits on carbon tetrachloride-induced nephrotoxicity in rats 木果水提物对四氯化碳所致大鼠肾毒性的保护作用
Pub Date : 2015-01-01 DOI: 10.5455/jeim.120515.cr.131
O. Adewale, N. Orhue
Objectives: The burden of renal diseases is growing every day, and there is need to speed up research toward realizing the goal of a safe, cheap, and readily available remedy against this scourge. The objective of the study was to investigate the protective effect of aqueous extract of the fruit of Xylopia aethiopica against carbon tetrachloride (CCl4 )-induced kidney damage in rats. Materials and Methods: Thirty-six rats divided into 6 groups were used for the investigation. Group I served as control, Groups II, III, and IV were pre-treated for 21 days with aqueous extract of the fruit of X. aethiopica at doses of 250, 500, and 1000 mg/kg body weight, respectively, prior to a single intraperitoneal administration of CCl4 . Animals in groups V received only the fruit extract at a dose of 1000 mg/kg body weight while animals in group VI were given only CCl4 . Animals were sacrificed 24 h after the administration of CCl4 . The kidney function tests were performed in addition to histopathological evaluations. Results: Significant increase in the plasma levels of creatinine and urea, and a significant decrease in plasma total protein and albumin following CCl4 administration were detected. CCl4 caused a significant elevation in malondialdehyde and a decrease in the activities of the antioxidant enzymes in the kidney. These deleterious effects were significantly prevented by pre-treatment with the X. aethiopica extract. Conclusion: These findings suggest that X. aethiopica protection of the kidney against CCl4 -induced damage may be connected with the rich antioxidant potential of the plant.
目标:肾脏疾病的负担每天都在增加,有必要加快研究,以实现安全、廉价和容易获得的治疗这一祸害的目标。本研究旨在探讨青木果水提物对四氯化碳(CCl4)所致大鼠肾损伤的保护作用。材料与方法:将36只大鼠分为6组进行研究。第1组作为对照组,第2、3、4组分别以250、500、1000 mg/kg体重的剂量用埃塞俄比亚锥虫果实水提取物预处理21天,然后单次腹腔注射CCl4。V组只给予1000mg /kg体重的水果提取物,而VI组只给予CCl4。给药24 h后处死动物。除组织病理学检查外,还进行了肾功能检查。结果:CCl4给药后血浆肌酐和尿素水平显著升高,血浆总蛋白和白蛋白水平显著降低。CCl4引起肾脏中丙二醛显著升高和抗氧化酶活性降低。这些有害的影响可以通过用埃塞俄比亚锥虫提取物进行预处理而得到明显的抑制。结论:这些研究结果提示,衣索匹对CCl4诱导的肾脏损伤的保护作用可能与其丰富的抗氧化潜能有关。
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引用次数: 2
Adult and fetal methemoglobin interaction with liposomes 成人和胎儿高铁血红蛋白与脂质体的相互作用
Pub Date : 2015-01-01 DOI: 10.5455/JEIM.181115.BR.026
N. Timchenko, M. Evstigneev, V. A. Rubakina
Objective: Hemoglobin (Hb) solutions are used in clinical practice and efforts are underway to study methods and techniques of their storage. As Hb solutions are stored, oxygen-intolerant methemoglobin (metHb) is formed. Increased metHb content in Hb solutions adversely affects the potential for their use. It is of particular interest for neonatology as increased metHb content is observed in healthy neonates. To simulate the processes taking place in metHb-containing red blood cells we researched the adult (A) and fetal (F) metHb interaction with liposomes. Methods: We obtained metHb А and F by oxidation of Hb А and F, respectively, with potassium hexacyanoferrate(ІІІ) excess and subsequent dialysis. Hb A was isolated from donors’ and Hb F from umbilical blood. Egg phosphatidylcholine and cardiolipin from bovine heart were used. Liposomes were formed in the 4:1 phosphatidylcholine-cardiolipin weight ratio. Protein-lipid complexes were formed at 20�С. The kinetics of metHb A and F interaction with liposomes was studied by recording the changes of optical density of protein-lipid complexes in the Soret band maximum. Results: The kinetics of metHb A and F interaction with liposomes showed that a decrease of the protein optical density in the Soret band for metHb F was more apparent than for metHb A. Conclusions: As far as metHb induces lipid peroxidation in model membranes, it is fair to assume that this process is more intensive in case of metHb F-liposomes interaction than in case of metHb A-liposomes interaction. Probably, metHb F is less resistant to hydroperoxides than metHb A.
目的:血红蛋白(Hb)溶液已广泛应用于临床,目前正在研究其储存方法和技术。当Hb溶液被储存时,形成不耐氧的高铁血红蛋白(metHb)。Hb溶液中甲基苯丙胺含量的增加对其使用潜力产生不利影响。这是特别感兴趣的新生儿,因为增加甲基苯丙胺含量是观察到健康的新生儿。为了模拟在含甲基苯丙胺的红细胞中发生的过程,我们研究了成人(A)和胎儿(F)甲基苯丙胺与脂质体的相互作用。方法:分别用过量的六氰高铁酸钾(ІІІ)氧化Hb А和F得到甲氧基b А和F。从献血者中分离出A型血红蛋白,从脐血中分离出F型血红蛋白。鸡蛋磷脂酰胆碱和牛心脏磷脂。脂质体形成的磷脂酰胆碱-心磷脂重量比为4:1。蛋白-脂质复合物在20°С形成。通过记录蛋白-脂复合物在Soret波段最大值光密度的变化,研究了甲基苯二甲酸乙酯与脂质体相互作用的动力学。结果:甲氧基甲醚和甲氧基甲醚与脂质体相互作用的动力学表明,甲氧基甲醚比甲氧基甲醚更明显地降低了Soret波段的蛋白质光密度。结论:甲氧基甲醚诱导了模型膜的脂质过氧化,可以认为甲氧基甲醚与甲氧基甲醚脂质体相互作用时,这一过程比甲氧基甲醚脂质体相互作用时更强烈。可能,甲基F对氢过氧化物的抗性不如甲基A。
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引用次数: 0
Can an ozone system generator reduce indoor triggers in asthmatic patient 臭氧发生器能减少哮喘患者的室内诱发因素吗
Pub Date : 2015-01-01 DOI: 10.5455/jeim.160715.or.134
A. Zanasi, P. D. Nuntiis, M. Mazzolini, C. Ciantelli, M. Alemanni, Carla Maria Sofia Ierna, M. Mastroroberto, E. Nardi, A. Morselli-Labate
Objective: During the last decades, an increase in the prevalence of asthma and other allergic diseases has been recorded, together with modifications in the living environment and consequent changes in the quality of indoor air. Indoor environment is favorable to the proliferation of allergens such as: house dust mites, fungal spores and cockroaches. The primary action to be undertaken for an effective eradication of infectious agents constitutes in modifying the house environmental conditions, which make it favorable to infestations. Ozone can play a sanitize role, but at the same time it can cause inflammation, especially in the lung. The aim of this study was to verify the role and safety of ozone in the sanitation of the bedroom of a subject suffering from asthma. Methods: A daily ozone treatment was carried during a 14-day time period in the bedroom of an asthmatic patient. Aerobiological sampling in indoor air, microbiological sampling and detection of ATP bioluminescence on the surface were performed before and after treatment at the first day, as well as after treatment at the 7th and 14th day of the study. An aerobiological measurement was also performed outdoor of the patient’s bedroom only for the first day. Results: Our analysis confirms that low ozone levels induced a marked reduction of indoor air microbiological pollution without adverse effects on lung functionality of the asthmatic patient we considered. Conclusion: Our observations warrant further investigation on the role that ozone-based sterilization might have in controlling asthmatic symptoms.
目的:在过去的几十年里,哮喘和其他过敏性疾病的患病率有所增加,同时生活环境的改变和室内空气质量的变化也随之发生。室内环境有利于室内尘螨、真菌孢子、蟑螂等过敏原的滋生。为有效消灭传染因子而应采取的主要行动是改变有利于虫害的房屋环境条件。臭氧可以起到消毒的作用,但同时它也会引起炎症,尤其是在肺部。这项研究的目的是验证臭氧在哮喘患者卧室卫生中的作用和安全性。方法:对1例哮喘患者的卧室进行为期14天的臭氧治疗。在第1天治疗前后、第7天和第14天治疗后分别对室内空气进行好氧采样、微生物采样和表面ATP生物发光检测。仅在第一天在患者卧室室外进行了一项有氧测量。结果:我们的分析证实,低臭氧水平诱导室内空气微生物污染显著减少,而对我们考虑的哮喘患者的肺功能没有不利影响。结论:我们的观察结果值得进一步研究臭氧灭菌在控制哮喘症状中的作用。
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引用次数: 0
Emergence of traditional antidiabetic treatments as starting points for development of modern medicine 传统降糖治疗方法的出现是现代医学发展的起点
Pub Date : 2015-01-01 DOI: 10.5455/JEIM.160615.RW.012
A. Mohammed, Dileep Kumar, S. Rizvi
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引用次数: 4
Erosive-ulcerative lesions on the lower lip with malignant potential: efficacy of incisional biopsy followed by topical hyaluronic acid and systemic selenium-vitamin combination 具有恶性潜能的下唇糜烂性溃疡性病变:切口活检后局部透明质酸和全身硒-维生素联合治疗的疗效
Pub Date : 2015-01-01 DOI: 10.5455/JEIM.191115.OR.138
Mahmoud Helmy Belal, Mohamed Bahaa Kheidr
Objective: Ulcerative lesions on lower lip are common. Aggressive forms lead to lip distortion and affect function and esthetic. Suggested treatment strategies are still facing controversy. This study aimed to evaluate the potential therapeutic efficacy of a combination of topical hyaluronic acid (HA) and systemic selenium plus vitamin A, C and E (ACE). Methods: Nine patients affected with symptomatic lesions on lower lip of erosive-ulcerative areas with moderate severity were enrolled. Age range: 47~67 years. They were diagnosed clinically and histopathologically by incisional biopsy. A topical HA gel was applied undiluted with a cotton bud four times daily. Selenium-ACE was prescribed systemically once daily. Treatments were applied for a 6-week period and lesions’ areas were followed for six months for any recurrence. Pain and severity of lesions were scored. Results: All patients had sun exposure, six were heavy smokers whereas two had sometimes alcohol consumption. In general, six patients were diagnosed as benign lesions that healed uneventfully with complete resolution. Four of them were inflammatory lesions, whereas two were oral lichen planus. On contrary, three patients were malignant (SCC), did not heal completely and referred to surgical resection with safety margin. No allergy was reported to used medications. Furthermore, pain sensation and lesion size were significantly improved within benign patients for the whole intervals except only 2 vs 4 weeks that showed no improvement. On contrary, no significant improvements occurred within malignant patients, neither for lesion healing nor pain alleviation, except only 2 vs 6 weeks that showed alleviation of symptoms. Conclusion: Topical HA gel combined with selenium-ACE may be a useful additional treatment option for erosive ulcerative lesions of the lower lip.
目的:下唇溃疡性病变较为常见。激进的形式导致嘴唇扭曲,影响功能和审美。建议的治疗策略仍面临争议。本研究旨在评估局部透明质酸(HA)和全身硒加维生素a、C和E (ACE)联合使用的潜在治疗效果。方法:选取9例中重度下唇糜烂溃烂区症状性病变患者。年龄范围:47~67岁。通过切口活检进行临床和组织病理学诊断。每日四次使用未稀释的透明质酸凝胶和棉签。每日一次系统处方硒- ace。治疗时间为6周,病变区域随访6个月是否复发。对疼痛和病变严重程度进行评分。结果:所有患者均有日晒,6名重度吸烟者,2名有时饮酒。一般来说,6例患者被诊断为良性病变,愈合顺利,完全解决。其中4例为炎性病变,2例为口腔扁平苔藓。相反,3例患者是恶性的(SCC),没有完全愈合,需要在安全范围内手术切除。未报告对使用过的药物过敏。此外,除了2周和4周没有改善外,良性患者的疼痛感觉和病变大小在整个时间间隔内都有显著改善。相反,在恶性患者中没有明显的改善,无论是病变愈合还是疼痛缓解,除了只有2周和6周的症状缓解。结论:局部透明质酸凝胶联合硒- ace可能是治疗下唇糜烂性溃疡的一种有效的补充治疗方法。
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引用次数: 0
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Journal of Experimental and Integrative Medicine
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