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Kolitz T, Fruchter O, Sasson L, Geva Y, Moreh-Rahav O, Zandman-Goddard G. Hemoptysis and a cardiac murmur: is it primary or secondary antiphospholipid syndrome? Lupus 2019; 28:1712-1715. [PMID: 31718483 DOI: 10.1177/0961203319887229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Endocarditis is most frequently infective in origin, and thus, when a patient presents with a clinical picture suggestive of endocarditis, an extensive work up aimed at finding the infectious agent is warranted. Among systemic lupus erythematosus (SLE) patients, cardiovascular disease is prevalent in more than 50% of patients including valvular disease and non-infective endocarditis, known as Libman-Sacks (LS) endocarditis. The prevalence of LS syndrome among SLE patients with secondary antiphospholipid syndrome (APS) is higher than in SLE without APS. Here, we present a case of a patient diagnosed with primary APS who presented with hemoptysis and a cardiac murmur. The diagnosis of SLE was established following the findings of non-infective verrucous vegetations together with diffuse alveolar hemorrhage (DAH). Treatment with high-dose corticosteroids and intravenous immunoglobulins yielded substantial resolution of the vegetations and regression of the DAH. Hence, aortic valve replacement was successfully performed as an elective procedure and without any postoperative complications. The patient is in remission after a 6-month follow-up. The clinical findings of DAH and double valve non-infectious endocarditis prompted the diagnosis of SLE with secondary APS.
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Affiliation(s)
- T Kolitz
- Department of Medicine C, Wolfson Medical Center, Holon, Israel
| | - O Fruchter
- Department of Pulmonology, Wolfson Medical Center, Holon, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - L Sasson
- Department of Cardiothoracic Surgery, Wolfson Medical Center, Holon, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Y Geva
- Department of Cardiology, Wolfson Medical Center, Holon, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - O Moreh-Rahav
- Department of Radiology, Wolfson Medical Center, Holon, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - G Zandman-Goddard
- Department of Medicine C, Wolfson Medical Center, Holon, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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Geva Y, Crissman J, Arakel EC, Gómez-Navarro N, Chuartzman SG, Stahmer KR, Schwappach B, Miller EA, Schuldiner M. Two novel effectors of trafficking and maturation of the yeast plasma membrane H + -ATPase. Traffic 2017; 18:672-682. [PMID: 28727280 PMCID: PMC5607100 DOI: 10.1111/tra.12503] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 07/17/2017] [Accepted: 07/17/2017] [Indexed: 11/28/2022]
Abstract
The endoplasmic reticulum (ER) is the entry site of proteins into the endomembrane system. Proteins exit the ER via coat protein II (COPII) vesicles in a selective manner, mediated either by direct interaction with the COPII coat or aided by cargo receptors. Despite the fundamental role of such receptors in protein sorting, only a few have been identified. To further define the machinery that packages secretory cargo and targets proteins from the ER to Golgi membranes, we used multiple systematic approaches, which revealed 2 uncharacterized proteins that mediate the trafficking and maturation of Pma1, the essential yeast plasma membrane proton ATPase. Ydl121c (Exp1) is an ER protein that binds Pma1, is packaged into COPII vesicles, and whose deletion causes ER retention of Pma1. Ykl077w (Psg1) physically interacts with Exp1 and can be found in the Golgi and coat protein I (COPI) vesicles but does not directly bind Pma1. Loss of Psg1 causes enhanced degradation of Pma1 in the vacuole. Our findings suggest that Exp1 is a Pma1 cargo receptor and that Psg1 aids Pma1 maturation in the Golgi or affects its retrieval. More generally our work shows the utility of high content screens in the identification of novel trafficking components.
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Affiliation(s)
- Yosef Geva
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
| | - Jonathan Crissman
- Department of Biological Sciences, Columbia University, New York, NY
| | - Eric C Arakel
- Department of Molecular Biology, Universitätsmedizin Göttingen, Göttingen, Germany
| | | | - Silvia G Chuartzman
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
| | - Kyle R Stahmer
- Department of Biological Sciences, Columbia University, New York, NY
| | - Blanche Schwappach
- Department of Molecular Biology, Universitätsmedizin Göttingen, Göttingen, Germany
| | - Elizabeth A Miller
- Department of Biological Sciences, Columbia University, New York, NY.,MRC Laboratory of Molecular Biology, Cell Biology Division, Cambridge, UK
| | - Maya Schuldiner
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
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Wang Y, Gong X, Su Y, Cui J, Shu X, Perge P, Kovacs A, Liptai C, Apor A, Nagy K, Geller L, Szeplaki G, Merkely B, Goebel B, Hamadanchi A, Schmidt-Winter C, Otto S, Jung C, Figulla H, Poerner T, Rotzak R, Aharonovich A, Geva Y, Rozenman Y, Capotosto L, D'angeli I, Azzano A, Placanica A, Mukred K, Rinaldi E, Ashurov R, Tanzilli G, Mangieri E, Vitarelli A, Lesevic H, Karl M, Rosner S, Ott I, Sonne C, Borges IP, Peixoto E, Peixoto R, Peixoto R, Marcolla V, Citro R, Baldi C, Provenza G, Di Maio M, Silverio A, Prota C, Di Muro MR, Bossone E, Giudice P, Piscione F, Muratori M, Fusini L, Gripari P, Tamborini G, Ghulam Ali S, Salvi L, Bartorelli A, Agrifoglio M, Alamanni F, Pepi M, Fusini L, Tamborini G, Muratori M, Cefalu' C, Bottari V, Gripari P, Ghulam Ali S, Andreini D, Pontone G, Pepi M. MODERATED POSTER SESSION: Imaging in interventional cardiology: Wednesday 3 December 2014, 09:00-16:00 * Location: Moderated Poster area. Eur Heart J Cardiovasc Imaging 2014. [DOI: 10.1093/ehjci/jeu242] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Abstract
Endoplasmic reticulum (ER) to Golgi trafficking is an essential step in sorting mature, correctly folded, processed and assembled proteins (cargo) from immature proteins and ER-resident proteins. However, the mechanisms governing trafficking selectivity, specificity and regulation are not yet fully understood. To date, three complementary mechanisms have been described that enable regulation of this trafficking step: ER retention of immature proteins in the ER; selective uptake of fully mature proteins into Golgi-bound vesicles; and retrieval from the Golgi of immature cargo that has erroneously exited the ER. Together, these three mechanisms allow incredible specificity and enable the cell to carry out protein quality control and regulate protein processing, oligomerization and expression. This review will focus on the current knowledge of selectivity mechanisms acting during the ER-to-Golgi sorting step and their significance in health and disease. The review will also highlight several key questions that have remained unanswered and discuss the future frontiers.
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Affiliation(s)
- Yosef Geva
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot 761001, Israel
| | - Maya Schuldiner
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot 761001, Israel.
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Burko Y, Geva Y, Refael-Cohen A, Shleizer-Burko S, Shani E, Berger Y, Halon E, Chuck G, Moshelion M, Ori N. From organelle to organ: ZRIZI MATE-Type transporter is an organelle transporter that enhances organ initiation. Plant Cell Physiol 2011; 52:518-27. [PMID: 21257605 DOI: 10.1093/pcp/pcr007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Plant architecture is a predictable but flexible trait. The timing and position of organ initiation from the shoot apical meristem (SAM) contribute to the final plant form. While much progress has been made recently in understanding how the site of leaf initiation is determined, the mechanism underlying the temporal interval between leaf primordia is still largely unknown. The Arabidopsis ZRIZI (ZRZ) gene belongs to a large gene family encoding multidrug and toxic compound extrusion (MATE) transporters. Unique among plant MATE transporters identified so far, ZRZ is localized to the membrane of a small organelle, possibly the mitochondria. Plants overexpressing ZRZ in initiating leaves are short, produce leaves much faster than wild-type plants and show enhanced growth of axillary buds. These results suggest that ZRZ is involved in communicating a leaf-borne signal that determines the rate of organ initiation.
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Affiliation(s)
- Yogev Burko
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture and The Otto Warburg Minerva Center for Agricultural Biotechnology, Hebrew University, Rehovot 76100, Israel
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