The iron element (Fe) is strictly required for the survival of most forms of life, including bacteria, plants and humans. Fine-tuned regulatory mechanisms for Fe absorption, mobilization and recycling operate to maintain Fe homeostasis, the disruption of which leads to Fe overload or Fe depletion. Whereas the deleterious effect of Fe deficiency relies on reduced oxygen transport and diminished activity of Fe-dependent enzymes, the cytotoxicity induced by Fe overload is due to the ability of this metal to act as a pro-oxidant and catalyze the formation of highly reactive hydroxyl radicals via the Fenton chemistry. This results in unfettered oxidative stress generation that, by inducing protein, lipid and DNA oxidation, leads to Fe-mediated programmed cell death and organ dysfunction. Major and systemic Fe overloads occurring in hemochromatosis and Fe-loading anemias have been extensively studied. However, localized tissue Fe overload was recently associated to a variety of pathologies, such as infection, inflammation, cancer, cardiovascular and neurodegenerative disorders. In keeping with the existence of cross-regulatory interactions between Fe homeostasis and the pathophysiology of these diseases, further investigations on the mechanisms that provide cellular and systemic adaptation to tissue Fe overload are instrumental for future therapeutic approaches. Thus, we encourage our colleagues to submit original research papers, reviews, perspectives, methods and technology reports to contribute their findings to a current state of the art on a comprehensive overview of the importance of iron metabolism in pathophysiologic conditions.
Dr. Williams discusses his own work and that of such contemporaries as Pound and Eliot and reveals his thoughts on a wide variety of twentieth-century concerns
絕對不要忽略平凡的事物,那可能是你獲得諾貝爾獎的線索 諾貝爾生醫獎得主巴里•馬歇爾親撰 諾貝爾獎得主親自對話,示範科學素養 建立閱讀理解的最佳讀物 培養自主學習能力 ...
科學新聞》雜誌(Science News)2018年度選書 《富比世》(Forbes)雜誌2018年腦科學必讀選書 暢銷書《基因:人類最親密的歷史》作者辛達塔.穆克吉盛讚 我們是怎麼發現荷爾蒙的? ...
Amy Griffin Monica Mouton Sanders M.Angela Casady Jennifer Smith Burden Tom Luster See also: Adolescent Pregnancy and Prevention; Prenatal Decision Making by Adolescents; Sexual Abstinence References and Further Reading Child Trends.
Thus, Turner's study (ref. 83) makes a case that Hitler's accession was by no means inevitable and that ... X as with so much in the mythology of his Third Reich, the belief that January 30”, 1933, marked a seizure of power was spurious ...
We also present the Pearson r coefficient on the same two relationships , which will facilitate the comparison we will make next . In using the Pearson r statistic , these two economic trade - off questions continue to be positively ...
我們多次要求資訊與圖片,札里洛有無窮的耐心,無論多麼晦澀難解,他都能迅速回應。在為威爾金斯的論文編目時,倫敦國王學院的奧佛(Christopher Olver)非常幫忙,主管為布洛維爾(Geoff Browell)。克里克的論文保存於維康信託基金會(Wellcome Trust), ...
Newman , G. ( 1992 ) Future prospects for whole - crop cereals in the UK . ... In : Hewitt , H.G. , Tyson , D. , Hollomon , D.W. , Smith , J.M. , Davies , W.P. and Dixon K.R. ( eds ) A Vital Role for Fungicides in Cereal Production .
Volume 2: Management, Use and Value of Wetlands Donal D. Hook, W. H. Mckee Jr, H. K. Smith, J. Gregory, V. G. Burrell Jr, ... Chapter Thirty - four AQUACULTURE IN MANGROVE WETLANDS : A PERSPECTIVE FROM SOUTHEAST ASIA James P. McVey ...
... George W. 318 Neal , Lonnie G. 126 , 312 Nickerson , William J. 11 Nokes , Clarence 121 Page , Lionel F. 356 ... Wanda Anne A. 150 Small , Isadore , III 135 Smart , Brinay 106 Smith , Jonathan S. , II 312 Smith , Morris Leslie 312 ...