المؤلفون: Wilson, Duncan, Ambler, Gareth, Lee, Keon-Joo, Lim, Jae-Sung, Shiozawa, Masayuki, Koga, Masatoshi, Li, Linxin, Lovelock, Caroline, Chabriat, Hugues, Hennerici, Michael, Wong, Yuen Kwun, Mak, Henry Ka Fung, Prats-Sánchez, Luis, Martínez-Domeño, Alejandro, Inamura, Shigeru, Yoshifuji, Kazuhisa, Arsava, Ethem Murat, Horstmann, Solveig, Purrucker, Jan, Lam, Bonnie Yin Ka, Wong, Adrian, Kim, Young Dae, Song, Tae-Jin, Schrooten, Maarten, Lemmens, Robin, Eppinger, Sebastian, Gattringer, Thomas, Uysal, Ender, Tanriverdi, Zeynep, Bornstein, Natan M., Assayag, Einor Ben, Hallevi, Hen, Tanaka, Jun, Hara, Hideo, Coutts, Shelagh B., Hert, Lisa, Polymeris, Alexandros, Seiffge, David J., Lyrer, Philippe, Algra, Ale, Kappelle, Jaap, Al-Shahi Salman, Rustam, Jäger, Hans R., Lip, Gregory Y. H., Mattle, Heinrich P., Panos, Leonidas D., Mas, Jean-Louis, Legrand, Laurence, Karayiannis, Christopher, Phan, Thanh, Gunkel, Sarah, Christ, Nicolas, Abrigo, Jill, Leung, Thomas, Chu, Winnie, Chappell, Francesca, Makin, Stephen, Hayden, Derek, Williams, David J., Kooi, M. Eline, van Dam-Nolen, Dianne H. K., Barbato, Carmen, Browning, Simone, Wiegertjes, Kim, Tuladhar, Anil M., Maaijwee, Noortje, Guevarra, Christine, Yatawara, Chathuri, Mendyk, Anne-Marie, Delmaire, Christine, Köhler, Sebastian, van Oostenbrugge, Robert, Zhou, Ying, Xu, Chao, Hilal, Saima, Gyanwali, Bibek, Chen, Christopher, Lou, Min, Staals, Julie, Bordet, R. gis, Kandiah, Nagaendran, de Leeuw, Frank-Erik, Simister, Robert, van der Lugt, Aad, Kelly, Peter J., Wardlaw, Joanna M., Soo, Yannie, Fluri, Felix, Srikanth, Velandai, Calvet, David, Jung, Simon, Kwa, Vincent I. H., Engelter, Stefan T., Peters, Nils, Smith, Eric E., Yakushiji, Yusuke, Orken, Dilek Necioglu, Fazekas, Franz, Thijs, Vincent, Heo, Ji Hoe, Mok, Vincent, Veltkamp, Roland, Ay, Hakan, Imaizumi, Toshio, Gomez-Anson, Beatriz, Lau, Kui Kai, Jouvent, Eric, Rothwell, Peter M., Toyoda, Kazunori, Bae, Hee-Joon, Marti-Fabregas, Joan, Werring, David J., Harkness, Kirsty, Shaw, Louise, Sword, Jane, Mohd Nor, Azlisham, Sharma, Pankaj, Kelly, Deborah, Harrington, Frances, Randall, Marc, Smith, Matthew, Mahawish, Karim, Elmarim, Abduelbaset, Esisi, Bernard, Cullen, Claire, Nallasivam, Arumug, Price, Christopher, Barry, Adrian, Roffe, Christine, Coyle, John, Hassan, Ahamad, Birns, Jonathan, Cohen, David, Sekaran, Lakshmanan, Parry-Jones, Adrian, Parry, Anthea, Hargroves, David, Proschel, Harald, Datta, Prabel, Darawil, Khaled, Manoj, Aravindakshan, Burn, Mathew, Patterson, Chris, Giallombardo, Elio, Smyth, Nigel, Mansoor, Syed, Anwar, Ijaz, Marsh, Rachel, Ispoglou, Sissi, Chadha, Dinesh, Prabhakaran, Mathuri, Meenakishundaram, Sanjeevikumar, O'Connell, Janice, Scott, Jon, Krishnamurthy, Vinodh, Aghoram, Prasanna, McCormick, Michael, Sprigg, Nikola, O'Mahony, Paul, Cooper, Martin, Choy, Lillian, Wilkinson, Peter, Leach, Simon, Caine, Sarah, Burger, Ilse, Gunathilagan, Gunaratam, Guyler, Paul, Emsley, Hedley, Davis, Michelle, Manawadu, Dulka, Pasco, Kath, Mamun, Maam, Luder, Robert, Sajid, Mahmud, Okwera, James, Warburton, Elizabeth, Saastamoinen, Kari, England, Timothy, Putterill, Janet, Flossman, Enrico, Power, Michael, Dani, Krishna, Mangion, David, Suman, Appu, Corrigan, John, Lawrence, Enas, Vahidassr, Djamil, Shakeshaft, Clare, Brown, Martin, Charidimou, Andreas, Cohen, Hannah, Banerjee, Gargi, Houlden, Henry, White, Mark, Yousry, Tarek, Flossmann, Enrico, Muir, Keith, el-Koussy, Marwan, Gratz, Pascal, Molad, Jeremy, Korczyn, Amos, Kliper, Efrat, Maeder, Philippe, Gass, Achim, Pachai, Chahin, Bracoub, Luc, Douste-Blazy, Marie-Yvonne, Fratacci, Marie Dominique, Vicaut, Eric, Sato, Shoichiro, Miwa, Kaori, Fujita, Kyohei, Ide, Toshihiro, Ma, Henry, Ly, John, Singhal, Shahoo, Chandra, Ronil, Slater, Lee-Anne, Soufan, Cathy, Moran, Christopher, Traenka, Christopher, Thilemann, Sebastian, Fladt, Joachim, Gensicke, Henrik, Bonati, Leo, Kim, Beom Joon, Han, Moon-Ku, Kang, Jihoon, Ko, Eunbin, Yang, Mi Hwa, Jang, Myung Suk, Murphy, Sean, Carty, Fiona, Akijian, Layan, Thornton, John, Schembri, Mark, Douven, Elles, Delgado-Mederos, Raquel, Marín, Rebeca, Camps-Renom, Pol, Guisado-Alonso, Daniel, Nuñez, Fidel, Medrano-Martorell, Santiago, Merino, Elisa, Iida, Kotaro, Ikeda, Syuhei, Nishihara, Masashi, Irie, Hiroyuki, Demirelli, Derya Selcuk, Medanta, Jayesh Modi, Zerna, Charlotte, Hernández, Maria Valdés, Armitage, Paul, Heye, Anna, Muñoz-Maniega, Susana, Sakka, Eleni, Thrippleton, Michael, Dennis, Martin, Beigneux, Ysoline, Silva, Mauro, Venketasubramanian, Narayanaswamy, Ho, Shu Leung, Cheung, Raymond Tak Fai, Chan, Koon Ho, Teo, Kay Cheong, Hui, Edward, Kwan, Joseph Shiu Kwong, Chang, Richard, Tse, Man Yu, Hoi, Chu Peng, Chan, Chung Yan, Chan, Oi Ling, Cheung, Ryan Hoi Kit, Wong, Edmund Ka Ming, Leung, Kam Tat, Tsang, Suk Fung, Ip, Hing Lung, Ma, Sze Ho, Ma, Karen, Fong, Wing Chi, Li, Siu Hung, Li, Richard, Ng, Ping Wing, Wong, Kwok Kui, Liu, Wenyan, Wong, Lawrence, Ramos, Lino, de Schryver, Els, Jöbsis, Joost, van der Sande, Jaap, Brouwers, Paul, Roos, Yvo, Stam, Jan, Bakker, Stef, Verbiest, Henk, Schoonewille, Wouter, Linn, Cisca, Hertzberger, Leopold, van Gemert, Maarten, Berntsen, Paul, Hendrikse, Jeroen, Nederkoorn, Paul, Mess, Werner, Koudstaal, Peter, Leff, Alexander, Ward, Nicholas, Nachev, Parashkev, Perry, Richard, Ozkan, Hatice, Mitchell, John

المصدر: Wilson , D , Ambler , G , Lee , K-J , Lim , J-S , Shiozawa , M , Koga , M , Li , L , Lovelock , C , Chabriat , H , Hennerici , M , Wong , Y K , Mak , H K F , Prats-Sánchez , L , Martínez-Domeño , A , Inamura , S , Yoshifuji , K , Arsava , E M , Horstmann , S , Purrucker , J , Lam , B Y K , Wong , A , Kim , Y D , Song , T-J , ....

الوصف: Background: Cerebral microbleeds are a neuroimaging biomarker of stroke risk. A crucial clinical question is whether cerebral microbleeds indicate patients with recent ischaemic stroke or transient ischaemic attack in whom the rate of future intracranial haemorrhage is likely to exceed that of recurrent ischaemic stroke when treated with antithrombotic drugs. We therefore aimed to establish whether a large burden of cerebral microbleeds or particular anatomical patterns of cerebral microbleeds can identify ischaemic stroke or transient ischaemic attack patients at higher absolute risk of intracranial haemorrhage than ischaemic stroke. Methods: We did a pooled analysis of individual patient data from cohort studies in adults with recent ischaemic stroke or transient ischaemic attack. Cohorts were eligible for inclusion if they prospectively recruited adult participants with ischaemic stroke or transient ischaemic attack; included at least 50 participants; collected data on stroke events over at least 3 months follow-up; used an appropriate MRI sequence that is sensitive to magnetic susceptibility; and documented the number and anatomical distribution of cerebral microbleeds reliably using consensus criteria and validated scales. Our prespecified primary outcomes were a composite of any symptomatic intracranial haemorrhage or ischaemic stroke, symptomatic intracranial haemorrhage, and symptomatic ischaemic stroke. We registered this study with the PROSPERO international prospective register of systematic reviews, number CRD42016036602. Findings: Between Jan 1, 1996, and Dec 1, 2018, we identified 344 studies. After exclusions for ineligibility or declined requests for inclusion, 20 322 patients from 38 cohorts (over 35 225 patient-years of follow-up; median 1·34 years [IQR 0·19–2·44]) were included in our analyses. The adjusted hazard ratio [aHR] comparing patients with cerebral microbleeds to those without was 1·35 (95% CI 1·20–1·50) for the composite outcome of intracranial haemorrhage and ischaemic stroke; 2·45 ...

العلاقة: https://research.vumc.nl/en/publications/8b89e017-7580-47d4-834d-d49abdc04320Test

الإتاحة: https://doi.org/10.1016/S1474-4422Test(19)30197-8
https://research.vumc.nl/en/publications/8b89e017-7580-47d4-834d-d49abdc04320Test
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85067010802&origin=inwardTest
https://www.ncbi.nlm.nih.gov/pubmed/31130428Test

المؤلفون: Lee, Yee-Ki, Ho, Philip Wing-Lok, Schick, Revital, Lau, Yee-Man, Lai, Wing-Hon, Zhou, Ting, Li, Yanhua, Ng, Kwong-Man, HO, Shu-Leung, Esteban, Miguel Angel, Binah, Ofer, Tse, Hung-Fat, Siu, Chung-Wah

المصدر: Pflügers Archiv - European Journal of Physiology ; volume 466, issue 9, page 1831-1844 ; ISSN 0031-6768 1432-2013

مصطلحات موضوعية: Physiology (medical), Clinical Biochemistry, Physiology

الإتاحة: https://doi.org/10.1007/s00424-013-1414-xTest

المؤلفون: Lee, Yee-Ki, Ho, Philip, Schick, Revital, Lau, Yee-Man, Lai, Wing-Hon, Zhou, Ting, Li, Yanhua, Ng, Kwong-Man, HO, Shu-Leung, Esteban, Miguel, Binah, Ofer, Tse, Hung-Fat, Siu, Chung-Wah

المصدر: Pflügers Archiv: European Journal of Physiology; Sep2014, Vol. 466 Issue 9, p1831-1844, 14p

مصطلحات موضوعية: FRIEDREICH'S ataxia, CARDIOMYOPATHIES, PLURIPOTENT stem cells, NEURODEGENERATION, MITOCHONDRIAL proteins, GENETIC code

مستخلص: Friedreich ataxia (FRDA), a recessive neurodegenerative disorder commonly associated with hypertrophic cardiomyopathy, is due to GAA repeat expansions within the first intron of the frataxin ( FXN) gene encoding the mitochondrial protein involved in iron-sulfur cluster biosynthesis. The triplet codon repeats lead to heterochromatin-mediated gene silencing and loss of frataxin. Nevertheless, inadequacy of existing FRDA-cardiac cellular models limited cardiomyopathy studies. We tested the hypothesis that iron homeostasis deregulation accelerates reduction in energy synthesis dynamics which contributes to impaired cardiac calcium homeostasis and contractile force. Silencing of FXN expressions occurred both in somatic FRDA-skin fibroblasts and two of the induced pluripotent stem cells (iPSC) clones; a sign of stress condition was shown in FRDA-iPSC cardiomyocytes with disorganized mitochondrial network and mitochondrial DNA (mtDNA) depletion; hypertrophic cardiac stress responses were observed by an increase in α-actinin-positive cell sizes revealed by FACS analysis as well as elevation in brain natriuretic peptide (BNP) gene expression; the intracellular iron accumulated in FRDA cardiomyocytes might be due to attenuated negative feedback response of transferring receptor (TSFR) expression and positive feedback response of ferritin (FTH1); energy synthesis dynamics, in terms of ATP production rate, was impaired in FRDA-iPSC cardiomyocytes, which were prone to iron overload condition. Energetic insufficiency determined slower Ca transients by retarding calcium reuptake to sarcoplasmic reticulum (SR) and impaired the positive inotropic and chronotropic responses to adrenergic stimulation. Our data showed for the first time that FRDA-iPSCs cardiac derivatives represent promising models to study cardiac stress response due to impaired iron homeostasis condition and mitochondrial damages. The cardiomyopathy phenotype was accelerated in an iron-overloaded condition early in calcium homeostasis aspect. [ABSTRACT FROM AUTHOR]

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