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| 1 | Juvenile ferric iron prevents microbiota dysbiosis and colitis in adult rodents显示文摘AIM: To assess whether juvenile chronic ferric iron ingestion limit colitis and dysbiosis at adulthood in rats and mice. METHODS: Two sets of experiments were designed. In the first set, recently weaned mice were either orally administered ferrous (Fe2+) iron salt or ferric (Fe3+) microencapsulated iron for 6 wk. The last week of experiments trinitrobenzene sulfonic acid (TNBS) colitis was induced. In the second set, juvenile rats received the microencapsulated ferric iron for 6 wk and were also submitted to TNBS colitis during the last week of experiments. In both sets of experiments, animals were sacrificed 7 d after TNBS instillation. Severity of the inflammation was assessed by scoring macroscopic lesions and quantifying colonic myeloperoxidase (MPO) activity. Alteration of the microflora profile was estimated usingquantitative polymerase chain reaction (qPCR) by measuring the evolution of total caecal microflora, Bacteroidetes, Firmicutes and enterobacteria. RESULTS: Neither ferrous nor ferric iron daily exposures at the juvenile period result in any effect in control animals at adulthood although ferrous iron repeated administration in infancy limited weight gain. Ferrous iron was unable to limit the experimental colitis (1.71 ± 0.27 MPO U/mg proteinvs 2.47 ± 0.22 MPO U/mg protein in colitic mice). In contrast, ferric iron significantly prevented the increase of MPO activity (1.64 ± 0.14 MPO U/mg protein) in TNBS-induced colitis. Moreover, this positive effect was observed at both the doses of ferric iron used (75 and 150 mg/kg per day po - 6 wk). In the study we also compared, in both rats and mice, the consequences of chronic repeated low level exposure to ferric iron (75 mg/kg per day po - 6 wk) on TNBS-induced colitis and its related dysbiosis. We confirmed that ferric iron limited the TNBS-induced increase of MPO activity in both the rodent species. Furthermore, we assessed the ferric iron incidence on TNBS-induced intestinal microbiota dysbiosis. At first, we needed to optimize the isolation and quantify DNA copy numbers using standard curves to perform by qPCR this interspecies comparison. Using this approach, we determined that total microflora was similar in control rats and mice and was mainly composed of Firmicutes and Bacteroidetes at a ratio of 10/1. Ferric juvenile administration did not modify the microflora profile in control animals. Total microflora numbers remained unchanged whichever experimental conditions studied. Following TNBS-induced colitis, the Firmicutes/Bacteroidetes ratio was altered resulting in a decrease of the Firmicutes numbers and an increase of the Bacteroidetes numbers typical of a gut inflammatory reaction. In parallel, the subdominant population, the enterobacteria was also increased. However, ferric iron supplementation for the juvenile period prevented the increase of Bacteroidetes and of enterobacteria numbers consecutive to the colitis in both the studied species at adulthood.CONCLUSION: Rats and mice juvenile chronic ferric iron ingestion prevents colitis and dysbiosis at adulthood as assessed by the first interspecies comparison. | Chourouk Ettreiki Pascale Gadonna-Widehem Irène Mangin Mose Coёffier Carine Delayre-Orthez Pauline M Anton | 2012 | World Journal of Gastroenterology2012，18，21： | 3 |
| 2 | 曲马多治疗糖尿病性神经疼痛的双盲随机试验显示文摘目的 :本研究旨在评价曲马多治疗糖尿病性神经痛的有效性和安全性。背景 :糖尿病性神经痛是糖尿病患者的主要症状 ,其治疗和其他的末梢神经病变一样 ,不能令人满意。曲马多是作用于中枢的镇痛剂 ,用于治疗中到重度疼痛。方法 :多中心、门诊病例、随机、双盲、安慰剂做对照、设置平行组的研究 ,包括清洗期 (在此期间停用所有镇痛剂 )和一个为期 42天的双盲治疗期。总共有 1 31名患糖尿病性神经痛的患者按每日 4次接受了曲马多 (n =65)或看上去与曲马多相同的安慰剂胶囊治疗 (n =66)。 42天的治疗结束后或治疗中断后比较曲马多组和安慰剂组平均疼痛强度评分作出主要有效性分析 ;次要有效性分析为疼痛缓解率评分和根据日常活动和睡眠状况作出的对生活质量的评估。结果 :曲马多平均剂量为 2 1 0mg/天 ,治疗糖尿病性神经痛较安慰剂有显著疗效 (P≤ 0 .0 0 1 )。曲马多组患者生理(P =0 .0 2 )和社会功能 (P =0 .0 4 )的评分显著优于安慰剂组。未发现对睡眠有显著治疗作用。曲马多最常见的不良反应是恶心 ,便秘 ,头疼和嗜睡。结论 | Harati Y Gooch C Swenson M Green D Raskin P Donofrio P Cornblath D Sachdeo R Siu CO Kamin M | 2001 | 中国疼痛医学杂志2001，7，1： | 2 |
| 3 | Effect of hypo-thyroidism and its treatment on the IGF system in infants andchildren显示文摘 | Purandare A Co Ng L Godil M | 2003 | J Pediatr Endocrinol Metab2003，16，1： | 1 |
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| 7 | Use of endothelial progenitor cell capture stent (Genous Bio-Engineered R Stent) during primary pereutaneous coronary intervention in acute myocardial infarction: intermediate- to long-term clinical follow-up 显示文摘 | CO M TAY E LEE CH | 2008 | Am Heart J2008，155，1： | 1 |
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| 16 | Heterogeneity in SDF-1 expression defines the vasculogenic potential of adult cardiac progenitor cells显示文摘 | Rodrigues CO Shehadeh LA Hoosien M | 2011 | Plos one2011，6，24： | 1 |
| 17 | Lack of antioxidant activity of the antiatherogenic compound L-arginine 显示文摘 | ADAMS M R CO V P ROLAND S | 1999 | Atherosclerosis1999，146，2： | 1 |
| 18 | Development of gastric slow waves in preterm infants measured by electrogastrography 显示文摘 | Liang J Co E Zhang M Pineda J Chen JD | 1998 | Am J Physiol1998，274，31： | 1 |
| 19 | New Fast GPS Code - Acquisition Technique Using FFT显示文摘 | Van Nee D J R Co - enen A J R M | 1991 | Electronic Letters1991，27，2： | 1 |
| 20 | A Swedish national twin study of lifetime major depression显示文摘 | Kendler KS Gatz M Gardner CO | 2006 | American Journal of Psychi- atry2006，163，： | 1 |
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