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Harris LA, Saad H, Shelton KE, Zhu L, Guo X, Mitchell DA. Tryptophan-Centric Bioinformatics Identifies New Lasso Peptide Modifications. Biochemistry 2024; 63:865-879. [PMID: 38498885 DOI: 10.1021/acs.biochem.4c00035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
Lasso peptides are a class of ribosomally synthesized and post-translationally modified peptides (RiPPs) defined by a macrolactam linkage between the N-terminus and the side chain of an internal aspartic acid or glutamic acid residue. Instead of adopting a branched-cyclic conformation, lasso peptides are "threaded", with the C-terminal tail passing through the macrocycle to present a kinetically trapped rotaxane conformation. The availability of enhanced bioinformatics methods has led to a significant increase in the number of secondary modifications found on lasso peptides. To uncover new ancillary modifications in a targeted manner, a bioinformatic strategy was developed to discover lasso peptides with modifications to tryptophan. This effort identified numerous putative lasso peptide biosynthetic gene clusters with core regions of the precursor peptides enriched in tryptophan. Parsing of these tryptophan (Trp)-rich biosynthetic gene clusters uncovered several putative ancillary modifying enzymes, including halogenases and dimethylallyltransferases expected to act upon Trp. Characterization of two gene products yielded a lasso peptide with two 5-Cl-Trp modifications (chlorolassin) and another bearing 5-dimethylallyl-Trp and 2,3-didehydro-Tyr modifications (wygwalassin). Bioinformatic analysis of the requisite halogenase and dimethylallyltransferase revealed numerous other putative Trp-modified lasso peptides that remain uncharacterized. We anticipate that the Trp-centric strategy reported herein may be useful in discovering ancillary modifications for other RiPP classes and, more generally, guide the functional prediction of enzymes that act on specific amino acids.
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Affiliation(s)
- Lonnie A Harris
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Hamada Saad
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Kyle E Shelton
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Lingyang Zhu
- School of Chemical Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Xiaorui Guo
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Douglas A Mitchell
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Microbiology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
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Saad H, Majer T, Bhattarai K, Lampe S, Nguyen DT, Kramer M, Straetener J, Brötz-Oesterhelt H, Mitchell DA, Gross H. Bioinformatics-guided discovery of biaryl-linked lasso peptides. Chem Sci 2023; 14:13176-13183. [PMID: 38023510 PMCID: PMC10664482 DOI: 10.1039/d3sc02380j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 10/27/2023] [Indexed: 12/01/2023] Open
Abstract
Lasso peptides are a class of ribosomally synthesized and post-translationally modified peptides (RiPPs) that feature an isopeptide bond and a distinct lariat fold. A growing number of secondary modifications have been described that further decorate lasso peptide scaffolds. Using genome mining, we have discovered a pair of lasso peptide biosynthetic gene clusters (BGCs) that include cytochrome P450 genes. Using mass spectrometry, stable isotope incorporation, and extensive 2D-NMR spectrometry, we report the structural characterization of two unique examples of (C-N) biaryl-linked lasso peptides. Nocapeptin A, from Nocardia terpenica, is tailored with a Trp-Tyr crosslink, while longipepetin A, from Longimycelium tulufanense, features a Trp-Trp linkage. Besides the unusual bicyclic frame, a Met of longipepetin A undergoes S-methylation to yield a trivalent sulfonium, a heretofore unprecedented RiPP modification. A bioinformatic survey revealed additional lasso peptide BGCs containing P450 enzymes which await future characterization. Lastly, nocapeptin A bioactivity was assessed against a panel of human and bacterial cell lines with modest growth-suppression activity detected towards Micrococcus luteus.
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Affiliation(s)
- Hamada Saad
- Department of Pharmaceutical Biology, Institute of Pharmaceutical Sciences, University of Tübingen Auf der Morgenstelle 8 72076 Tübingen Germany
- Department of Chemistry and the Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign Urbana Illinois 61801 USA
| | - Thomas Majer
- Department of Pharmaceutical Biology, Institute of Pharmaceutical Sciences, University of Tübingen Auf der Morgenstelle 8 72076 Tübingen Germany
| | - Keshab Bhattarai
- Department of Pharmaceutical Biology, Institute of Pharmaceutical Sciences, University of Tübingen Auf der Morgenstelle 8 72076 Tübingen Germany
| | - Sarah Lampe
- Department of Pharmaceutical Biology, Institute of Pharmaceutical Sciences, University of Tübingen Auf der Morgenstelle 8 72076 Tübingen Germany
| | - Dinh T Nguyen
- Department of Chemistry and the Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign Urbana Illinois 61801 USA
| | - Markus Kramer
- Institute of Organic Chemistry, University of Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Jan Straetener
- Department of Microbial Bioactive Compounds, Interfaculty Institute of Microbiology and Infection Medicine, University of Tübingen Auf der Morgenstelle 28 72076 Tübingen Germany
| | - Heike Brötz-Oesterhelt
- Department of Microbial Bioactive Compounds, Interfaculty Institute of Microbiology and Infection Medicine, University of Tübingen Auf der Morgenstelle 28 72076 Tübingen Germany
- Cluster of Excellence: EXC 2124: Controlling Microbes to Fight Infection, University of Tübingen Tübingen Germany
| | - Douglas A Mitchell
- Department of Chemistry and the Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign Urbana Illinois 61801 USA
| | - Harald Gross
- Department of Pharmaceutical Biology, Institute of Pharmaceutical Sciences, University of Tübingen Auf der Morgenstelle 8 72076 Tübingen Germany
- Cluster of Excellence: EXC 2124: Controlling Microbes to Fight Infection, University of Tübingen Tübingen Germany
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Saad H, Eraky M, El-Tahe A, Riad M, Sharaf K, Baz A, Farid M, Arafa A. A THOROUGH STUDY AND META-ANALYSIS OF THE PROGNOSTIC RELEVANCE OF THE C-REACTIVE-ALBUMIN RATIO IN ACUTE PANCREATITIS. Georgian Med News 2023:111-118. [PMID: 38096527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
Although most cases of acute pancreatitis (AP) are minor, severe cases are associated with a substantial risk of death. Acute pancreatitis (AP) is a common illness. Therefore, it is critical to assess AP severity as soon as possible. This review aimed to ascertain the predictive significance of the CRP to albumin ratio in individuals with AP. We searched PubMed, Science Direct, and Cochrane Library electronic databases Until January 2023. Studies that reported the CRP/alb ratio at admission and its relationship to the severity or death of patients with AP were included. Using a random-effects model, we computed the pooled mean difference (MD) and 95% confidence interval (CI). The quality of the included studies was evaluated using the Newcastle-Ottawa scale. This meta-analysis combined data from six trials with a total of 2244 patients. Upon admission, the CRP/alb ratio was higher in patients with severe AP than in those with mild to moderate AP (pooled MD:3.59; 95% CI:2.51-4.68; p<0.00001). Additionally, non-survivor AP patients had a substantially higher CRP/alb ratio than survivor AP patients (pooled MD:2.12; 95% CI:0.43-3.8; p<0.01). Individuals with AP may benefit from a high CRP/ALB ratio as a preliminary indicator of poor prognosis.
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Affiliation(s)
- H Saad
- 1Surgical Department, Zagazig University, Sharkia, Egypt
| | - M Eraky
- 1Surgical Department, Zagazig University, Sharkia, Egypt
| | - A El-Tahe
- 1Surgical Department, Zagazig University, Sharkia, Egypt
| | - M Riad
- 1Surgical Department, Zagazig University, Sharkia, Egypt
| | - Kh Sharaf
- 1Surgical Department, Zagazig University, Sharkia, Egypt
| | - A Baz
- 2Surgical Department, Alahrar Teaching Hospital, Sharkia, Egypt
| | - M Farid
- 1Surgical Department, Zagazig University, Sharkia, Egypt
| | - A Arafa
- 1Surgical Department, Zagazig University, Sharkia, Egypt
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Blaszczyk E, Hellwig S, Saad H, Ganeshan R, Stengl H, Nolte CH, Fiebach JB, Endres M, Kuhnt J, Gröschel J, Schulz-Menger J, Scheitz JF. Myocardial injury in patients with acute ischemic stroke detected by cardiovascular magnetic resonance imaging. Eur J Radiol 2023; 165:110908. [PMID: 37315403 DOI: 10.1016/j.ejrad.2023.110908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 04/29/2023] [Accepted: 05/30/2023] [Indexed: 06/16/2023]
Abstract
BACKGROUND Patients with acute ischemic stroke (AIS) are at high risk of adverse cardiovascular events. Until now, the burden of myocardial injury derived from cardiovascular magnetic resonance imaging (CMR) has not been established in this population. METHODS Patients with AIS underwent CMR at 3 Tesla within 120 h after the index stroke as part of a prospective, single-center study. Patients with persistent atrial fibrillation were excluded. Morphology and function of both cardiac chambers and atria were assessed applying SSFP cine. Myocardial tissue differentiation was based on native and contrast-enhanced imaging including late gadolinium enhancement (LGE) after 0.15 mmol/kg gadobutrol for focal fibrosis and parametric T2- and T1-mapping for diffuse findings. To detect myocardial deformation global longitudinal (GLS), circumferential (GCS) and radial (GRS) strain was measured applying feature tracking. Cardiac troponin was measured using a high-sensitivity assay (99th percentile upper reference limit 14 ng/L). T2 mapping values were compared with 20 healthy volunteers. RESULTS CMR with contrast media was successfully performed in 92 of 115 patients (mean age 74 years, 40% female, known myocardial infarction 6%). Focal myocardial fibrosis (LGE) was detected in 31 of 92 patients (34%) of whom 23/31 (74%) showed an ischemic pattern. Patients with LGE were more likely to have diabetes, prior myocardial infarction, prior ischemic stroke, and to have elevated troponin levels compared to those without. Presence of LGE was accompanied by diffuse fibrosis (increased T1 native values) even in remote cardiac areas as well as reduced global radial, circumferential and longitudinal strain values. In 14/31 (45%) of all patients with LGE increased T2-mapping values were detectable. CONCLUSIONS More than one-third of patients with AIS have evidence of focal myocardial fibrosis on CMR. Nearly half of these changes may have acute or subacute onset. These findings are accompanied by diffuse myocardial changes and reduced myocardial deformation. Further studies, ideally with serial CMR measurements during follow-up, are required to establish the impact of these findings on long-term prognosis after AIS.
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Affiliation(s)
- E Blaszczyk
- Charité Universitätsmedizin Berlin, Working Group on Cardiovascular Magnetic Resonance, Experimental and Clinical Research Center a joint cooperation between the Charité Medical Faculty and the Max-Delbrueck Center for Molecular Medicine , HELIOS Klinikum Berlin Buch, Cardiology, Berlin, Germany; DZHK (German Centre for Cardiovascular Research), partner site Berlin, Berlin, Germany
| | - S Hellwig
- Klinik für Neurologie mit Experimenteller Neurologie, Charité Universitätsmedizin Berlin und Centrum für Schlaganfallforschung, Berlin, Germany
| | - H Saad
- Charité Universitätsmedizin Berlin, Working Group on Cardiovascular Magnetic Resonance, Experimental and Clinical Research Center a joint cooperation between the Charité Medical Faculty and the Max-Delbrueck Center for Molecular Medicine , HELIOS Klinikum Berlin Buch, Cardiology, Berlin, Germany
| | - R Ganeshan
- Klinik für Neurologie mit Experimenteller Neurologie, Charité Universitätsmedizin Berlin und Centrum für Schlaganfallforschung, Berlin, Germany
| | - H Stengl
- Klinik für Neurologie mit Experimenteller Neurologie, Charité Universitätsmedizin Berlin und Centrum für Schlaganfallforschung, Berlin, Germany
| | - C H Nolte
- Klinik für Neurologie mit Experimenteller Neurologie, Charité Universitätsmedizin Berlin und Centrum für Schlaganfallforschung, Berlin, Germany; DZHK (German Centre for Cardiovascular Research), partner site Berlin, Berlin, Germany; Berlin Institute of Health (BIH), Germany
| | - J B Fiebach
- Klinik für Neurologie mit Experimenteller Neurologie, Charité Universitätsmedizin Berlin und Centrum für Schlaganfallforschung, Berlin, Germany
| | - M Endres
- Klinik für Neurologie mit Experimenteller Neurologie, Charité Universitätsmedizin Berlin und Centrum für Schlaganfallforschung, Berlin, Germany; DZHK (German Centre for Cardiovascular Research), partner site Berlin, Berlin, Germany; ExcellenceCluster NeuroCure, Germany; German Center for Neurodegenerative Diseases (DZNE), partner site Berlin, Germany; Berlin Institute of Health (BIH), Germany
| | - J Kuhnt
- Charité Universitätsmedizin Berlin, Working Group on Cardiovascular Magnetic Resonance, Experimental and Clinical Research Center a joint cooperation between the Charité Medical Faculty and the Max-Delbrueck Center for Molecular Medicine , HELIOS Klinikum Berlin Buch, Cardiology, Berlin, Germany
| | - J Gröschel
- Charité Universitätsmedizin Berlin, Working Group on Cardiovascular Magnetic Resonance, Experimental and Clinical Research Center a joint cooperation between the Charité Medical Faculty and the Max-Delbrueck Center for Molecular Medicine , HELIOS Klinikum Berlin Buch, Cardiology, Berlin, Germany; DZHK (German Centre for Cardiovascular Research), partner site Berlin, Berlin, Germany
| | - J Schulz-Menger
- Charité Universitätsmedizin Berlin, Working Group on Cardiovascular Magnetic Resonance, Experimental and Clinical Research Center a joint cooperation between the Charité Medical Faculty and the Max-Delbrueck Center for Molecular Medicine , HELIOS Klinikum Berlin Buch, Cardiology, Berlin, Germany; DZHK (German Centre for Cardiovascular Research), partner site Berlin, Berlin, Germany
| | - J F Scheitz
- Klinik für Neurologie mit Experimenteller Neurologie, Charité Universitätsmedizin Berlin und Centrum für Schlaganfallforschung, Berlin, Germany; DZHK (German Centre for Cardiovascular Research), partner site Berlin, Berlin, Germany.
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Saad H, Majer T, Bhattarai K, Lampe S, Nguyen DT, Kramer M, Straetener J, Brötz-Oesterhelt H, Mitchell DA, Gross H. Bioinformatics-Guided Discovery of Biaryl-Tailored Lasso Peptides. bioRxiv 2023:2023.03.06.531328. [PMID: 36945544 PMCID: PMC10028836 DOI: 10.1101/2023.03.06.531328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
Lasso peptides are a class of ribosomally synthesized and post-translationally modified peptides (RiPPs) that feature an isopeptide bond and a distinct lariat fold. A growing number of secondary modifications have been described that further decorate lasso peptide scaffolds. Using genome mining, we have discovered a pair of lasso peptide biosynthetic gene clusters (BGCs) that include cytochrome P450 genes. Here, we report the structural characterization of two unique examples of (C-N) biaryl-containing lasso peptides. Nocapeptin A, from Nocardia terpenica, is tailored with Trp-Tyr crosslink while longipepetin A, from Longimycelium tulufanense, features Trp-Trp linkage. Besides the unusual bicyclic frame, longipepetin A receives an S-methylation by a new Met methyltransferase resulting in unprecedented sulfonium-bearing RiPP. Our bioinformatic survey revealed P450(s) and further maturating enzyme(s)-containing lasso BGCs awaiting future characterization.
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Affiliation(s)
- Hamada Saad
- Department of Pharmaceutical Biology, Institute of Pharmaceutical Sciences, University of Tübingen, Auf der Morgenstelle 8, 72076 Tübingen (Germany)
- Department of Chemistry and the Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana–Champaign, Urbana, Illinois 61801 (United States)
| | - Thomas Majer
- Department of Pharmaceutical Biology, Institute of Pharmaceutical Sciences, University of Tübingen, Auf der Morgenstelle 8, 72076 Tübingen (Germany)
| | - Keshab Bhattarai
- Department of Pharmaceutical Biology, Institute of Pharmaceutical Sciences, University of Tübingen, Auf der Morgenstelle 8, 72076 Tübingen (Germany)
| | - Sarah Lampe
- Department of Pharmaceutical Biology, Institute of Pharmaceutical Sciences, University of Tübingen, Auf der Morgenstelle 8, 72076 Tübingen (Germany)
| | - Dinh T. Nguyen
- Department of Chemistry and the Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana–Champaign, Urbana, Illinois 61801 (United States)
| | - Markus Kramer
- Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen (Germany)
| | - Jan Straetener
- Department of Microbial Bioactive Compounds, Interfaculty Institute of Microbiology and Infection Medicine, University of Tübingen, Auf der Morgenstelle 28, 72076 Tübingen (Germany)
| | - Heike Brötz-Oesterhelt
- Department of Microbial Bioactive Compounds, Interfaculty Institute of Microbiology and Infection Medicine, University of Tübingen, Auf der Morgenstelle 28, 72076 Tübingen (Germany)
| | - Douglas A. Mitchell
- Department of Chemistry and the Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana–Champaign, Urbana, Illinois 61801 (United States)
| | - Harald Gross
- Department of Pharmaceutical Biology, Institute of Pharmaceutical Sciences, University of Tübingen, Auf der Morgenstelle 8, 72076 Tübingen (Germany)
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Ktari K, Ben Salem M, Ouni A, Mouna H, Wadye H, Skhiri H, Saad H. Grossesse après transplantation rénale : expérience de service de néphrologie. Prog Urol 2021. [DOI: 10.1016/j.purol.2021.08.148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Saad H, Aziz S, Gehringer M, Kramer M, Straetener J, Berscheid A, Brötz‐Oesterhelt H, Gross H. Nocathioamides, Uncovered by a Tunable Metabologenomic Approach, Define a Novel Class of Chimeric Lanthipeptides. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102571] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Hamada Saad
- Department of Pharmaceutical Biology Institute of Pharmaceutical Sciences University of Tübingen Auf der Morgenstelle 8 72076 Tübingen Germany
- Department of Phytochemistry and Plant Systematics Division of Pharmaceutical Industries National Research Centre Dokki Cairo Egypt
| | - Saefuddin Aziz
- Department of Pharmaceutical Biology Institute of Pharmaceutical Sciences University of Tübingen Auf der Morgenstelle 8 72076 Tübingen Germany
- Microbiology Department Biology Faculty Jenderal Soedirman University Purwokerto Indonesia
| | - Matthias Gehringer
- Department of Pharmaceutical/Medicinal Chemistry Institute of Pharmaceutical Sciences University of Tübingen Auf der Morgenstelle 8 72076 Tübingen Germany
| | - Markus Kramer
- Institute of Organic Chemistry University of Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Jan Straetener
- Department of Microbial Bioactive Compounds Interfaculty Institute of Microbiology and Infection Medicine University of Tübingen Auf der Morgenstelle 28 72076 Tübingen Germany
| | - Anne Berscheid
- Department of Microbial Bioactive Compounds Interfaculty Institute of Microbiology and Infection Medicine University of Tübingen Auf der Morgenstelle 28 72076 Tübingen Germany
| | - Heike Brötz‐Oesterhelt
- Department of Microbial Bioactive Compounds Interfaculty Institute of Microbiology and Infection Medicine University of Tübingen Auf der Morgenstelle 28 72076 Tübingen Germany
- Cluster of Excellence: EXC 2124: Controlling Microbes to Fight Infection University of Tübingen Tübingen Germany
| | - Harald Gross
- Department of Pharmaceutical Biology Institute of Pharmaceutical Sciences University of Tübingen Auf der Morgenstelle 8 72076 Tübingen Germany
- Cluster of Excellence: EXC 2124: Controlling Microbes to Fight Infection University of Tübingen Tübingen Germany
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Saad H, Aziz S, Gehringer M, Kramer M, Straetener J, Berscheid A, Brötz‐Oesterhelt H, Gross H. Nocathioamides, Uncovered by a Tunable Metabologenomic Approach, Define a Novel Class of Chimeric Lanthipeptides. Angew Chem Int Ed Engl 2021; 60:16472-16479. [PMID: 33991039 PMCID: PMC8362196 DOI: 10.1002/anie.202102571] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 04/09/2021] [Indexed: 12/16/2022]
Abstract
The increasing number of available genomes, in combination with advanced genome mining techniques, unveiled a plethora of biosynthetic gene clusters (BGCs) coding for ribosomally synthesized and post-translationally modified peptides (RiPPs). The products of these BGCs often represent an enormous resource for new and bioactive compounds, but frequently, they cannot be readily isolated and remain cryptic. Here, we describe a tunable metabologenomic approach that recruits a synergism of bioinformatics in tandem with isotope- and NMR-guided platform to identify the product of an orphan RiPP gene cluster in the genomes of Nocardia terpenica IFM 0406 and 0706T . The application of this tactic resulted in the discovery of nocathioamides family as a founder of a new class of chimeric lanthipeptides I.
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Affiliation(s)
- Hamada Saad
- Department of Pharmaceutical BiologyInstitute of Pharmaceutical SciencesUniversity of TübingenAuf der Morgenstelle 872076TübingenGermany
- Department of Phytochemistry and Plant SystematicsDivision of Pharmaceutical IndustriesNational Research CentreDokkiCairoEgypt
| | - Saefuddin Aziz
- Department of Pharmaceutical BiologyInstitute of Pharmaceutical SciencesUniversity of TübingenAuf der Morgenstelle 872076TübingenGermany
- Microbiology DepartmentBiology FacultyJenderal Soedirman UniversityPurwokertoIndonesia
| | - Matthias Gehringer
- Department of Pharmaceutical/Medicinal Chemistry Institute of Pharmaceutical SciencesUniversity of TübingenAuf der Morgenstelle 872076TübingenGermany
| | - Markus Kramer
- Institute of Organic ChemistryUniversity of TübingenAuf der Morgenstelle 1872076TübingenGermany
| | - Jan Straetener
- Department of Microbial Bioactive CompoundsInterfaculty Institute of Microbiology and Infection MedicineUniversity of TübingenAuf der Morgenstelle 2872076TübingenGermany
| | - Anne Berscheid
- Department of Microbial Bioactive CompoundsInterfaculty Institute of Microbiology and Infection MedicineUniversity of TübingenAuf der Morgenstelle 2872076TübingenGermany
| | - Heike Brötz‐Oesterhelt
- Department of Microbial Bioactive CompoundsInterfaculty Institute of Microbiology and Infection MedicineUniversity of TübingenAuf der Morgenstelle 2872076TübingenGermany
- Cluster of Excellence: EXC 2124: Controlling Microbes to Fight InfectionUniversity of TübingenTübingenGermany
| | - Harald Gross
- Department of Pharmaceutical BiologyInstitute of Pharmaceutical SciencesUniversity of TübingenAuf der Morgenstelle 872076TübingenGermany
- Cluster of Excellence: EXC 2124: Controlling Microbes to Fight InfectionUniversity of TübingenTübingenGermany
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9
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Engelbrecht A, Saad H, Gross H, Kaysser L. Natural Products from Nocardia and Their Role in Pathogenicity. Microb Physiol 2021; 31:217-232. [PMID: 34139700 DOI: 10.1159/000516864] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 04/26/2021] [Indexed: 11/19/2022]
Abstract
Nocardia spp. are filamentous Actinobacteria of the order Corynebacteriales and mostly known for their ability to cause localized and systemic infections in humans. However, the onset and progression of nocardiosis is only poorly understood, in particular the mechanisms of strain-specific presentations. Recent genome sequencing has revealed an extraordinary capacity for the production of specialized small molecules. Such secondary metabolites are often crucial for the producing microbe to survive the challenges of different environmental conditions. An interesting question thus concerns the role of these natural products in Nocardia-associated pathogenicity and immune evasion in a human host. In this review, a summary and discussion of Nocardia metabolites is presented, which may play a part in nocardiosis because of their cytotoxic, immunosuppressive and metal-chelating properties or otherwise vitally important functions. This review also contains so far unpublished data concerning the biosynthesis of these molecules that were obtained by detailed bioinformatic analyses.
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Affiliation(s)
- Alicia Engelbrecht
- Department of Pharmaceutical Biology, University of Tübingen, Tübingen, Germany
| | - Hamada Saad
- Department of Pharmaceutical Biology, University of Tübingen, Tübingen, Germany.,Department of Phytochemistry and Plant Systematics, Division of Pharmaceutical Industries, National Research Centre, Cairo, Egypt
| | - Harald Gross
- Department of Pharmaceutical Biology, University of Tübingen, Tübingen, Germany
| | - Leonard Kaysser
- Department of Pharmaceutical Biology, University of Tübingen, Tübingen, Germany.,Institute for Drug Discovery, University of Leipzig, Leipzig, Germany
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Saad H, Gazar Y, Ghanem S, Maaty A. POS1278 THE PREVALENCE AND CLINICAL SIGNIFICANCE OF ULTRASONOGRAPHIC FINDINGS OF DISTAL MEDIAL HAMSTRING TENDONS IN PATIENTS WITH POSTEROMEDIAL KNEE PAIN. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.3233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Periarticular abnormalities are common ultrasonographic (U/S) findings in individuals with knee pain. Incidental U/S observations, including thickening of the distal hamstring tendons, require explanations for their clinical importance. Tendon thickness may be a good indicator of tendinopathy and tendon dysfunction. Also, it is uncertain whether these tendon changes are correlated with knee pain or not?Objectives:The aim of this study was to determine U/S findings of distal medial hamstring tendons in patients with posteromedial (PM) knee pain and assess the diagnostic values of tendon thickness in predicting tendinopathy.Methods:We studied distal medial hamstring tendons (semimembranosus [SM] and semitendinosus [ST]) of 104 patients (104 knees) with non-traumatic unilateral PM knee pain and 118 healthy controls (236 knees). U/S evaluations included tendon thickness, echogenicity, the presence of intrasubstance tears, calcification, and vascularity.Results:The mean age (standard deviation) of the patients and control groups were 51.7 (10.4) years and 49.8 (9.9) years, respectively. The mean visual analogue scale (VAS) for pain among patients was 5.1 and 58.6% of them located the pain at medial joint line. The studied patients had significantly higher mean SM thickness (7.17 mm vs. 5.46 mm, respectively) and ST thickness (3.93 mm vs. 3.45 mm, respectively) than the controls. U/S abnormalities among patients were hypoechogenicity (62.5%), intrasubstance tears (31.7%), loss of fibrillar pattern (23.1%), Baker cyst (20.2%), calcification (18.3%), Anserine bursitis (11.5%), and neovascularization (6.7%). We found significant correlations between tendon thickness and VAS (r=0.752, p=0.004), and pain location (r=0.680, p=0.008). SM thickness had higher accuracy to predict tendinopathy than ST thickness (80.6% vs. 68.9%, respectively).Table 1.Diagnostic values of tendon thickness in predicting tendinopathy.TendonsCutoffSensitivitySpecificity+PV-PVAccuracyAUCSM>6.670.289.885.776.880.60.835ST>3.756.779.671.167.668.90.696SM: semimembranosus, ST: semitendinosus, +PV: positive predictive value, -PV: negative predictive value, AUC: area under curve.Conclusion:U/S changes are frequently present in patients with PM knee pain. Tendon thickness is an accurate predictor of tendinopathy. These findings suggest that U/S screening of all individuals with PM knee pain is a useful tool for improving patients’ outcomes and decreasing tendon-related disability.Disclosure of Interests:None declared
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Handayani I, Saad H, Ratnakomala S, Lisdiyanti P, Kusharyoto W, Krause J, Kulik A, Wohlleben W, Aziz S, Gross H, Gavriilidou A, Ziemert N, Mast Y. Mining Indonesian Microbial Biodiversity for Novel Natural Compounds by a Combined Genome Mining and Molecular Networking Approach. Mar Drugs 2021; 19:316. [PMID: 34071728 PMCID: PMC8227522 DOI: 10.3390/md19060316] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 05/22/2021] [Accepted: 05/25/2021] [Indexed: 11/17/2022] Open
Abstract
Indonesia is one of the most biodiverse countries in the world and a promising resource for novel natural compound producers. Actinomycetes produce about two thirds of all clinically used antibiotics. Thus, exploiting Indonesia's microbial diversity for actinomycetes may lead to the discovery of novel antibiotics. A total of 422 actinomycete strains were isolated from three different unique areas in Indonesia and tested for their antimicrobial activity. Nine potent bioactive strains were prioritized for further drug screening approaches. The nine strains were cultivated in different solid and liquid media, and a combination of genome mining analysis and mass spectrometry (MS)-based molecular networking was employed to identify potential novel compounds. By correlating secondary metabolite gene cluster data with MS-based molecular networking results, we identified several gene cluster-encoded biosynthetic products from the nine strains, including naphthyridinomycin, amicetin, echinomycin, tirandamycin, antimycin, and desferrioxamine B. Moreover, 16 putative ion clusters and numerous gene clusters were detected that could not be associated with any known compound, indicating that the strains can produce novel secondary metabolites. Our results demonstrate that sampling of actinomycetes from unique and biodiversity-rich habitats, such as Indonesia, along with a combination of gene cluster networking and molecular networking approaches, accelerates natural product identification.
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Affiliation(s)
- Ira Handayani
- Department of Microbiology/Biotechnology, Interfaculty Institute of Microbiology and Infection Medicine, Tübingen (IMIT), Cluster of Excellence ‘Controlling Microbes to Fight Infections’, University of Tübingen, Auf der Morgenstelle 28, 72076 Tübingen, Germany; (I.H.); (J.K.); (A.K.); (W.W.)
- Research Center for Biotechnology, Indonesian Institute of Sciences (LIPI), Jl. Raya Jakarta-Bogor KM.46, Cibinong, West Java 16911, Indonesia; (P.L.); (W.K.)
| | - Hamada Saad
- Department of Pharmaceutical Biology, Institute of Pharmaceutical Sciences, University of Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany; (H.S.); (S.A.); (H.G.)
- Department of Phytochemistry and Plant Systematics, Division of Pharmaceutical Industries, National Research Centre, Dokki, Cairo 12622, Egypt
| | - Shanti Ratnakomala
- Research Center for Biology, Indonesian Institute of Sciences (LIPI), Jl. Raya Jakarta-Bogor KM.46, Cibinong, West Java 16911, Indonesia;
| | - Puspita Lisdiyanti
- Research Center for Biotechnology, Indonesian Institute of Sciences (LIPI), Jl. Raya Jakarta-Bogor KM.46, Cibinong, West Java 16911, Indonesia; (P.L.); (W.K.)
| | - Wien Kusharyoto
- Research Center for Biotechnology, Indonesian Institute of Sciences (LIPI), Jl. Raya Jakarta-Bogor KM.46, Cibinong, West Java 16911, Indonesia; (P.L.); (W.K.)
| | - Janina Krause
- Department of Microbiology/Biotechnology, Interfaculty Institute of Microbiology and Infection Medicine, Tübingen (IMIT), Cluster of Excellence ‘Controlling Microbes to Fight Infections’, University of Tübingen, Auf der Morgenstelle 28, 72076 Tübingen, Germany; (I.H.); (J.K.); (A.K.); (W.W.)
| | - Andreas Kulik
- Department of Microbiology/Biotechnology, Interfaculty Institute of Microbiology and Infection Medicine, Tübingen (IMIT), Cluster of Excellence ‘Controlling Microbes to Fight Infections’, University of Tübingen, Auf der Morgenstelle 28, 72076 Tübingen, Germany; (I.H.); (J.K.); (A.K.); (W.W.)
| | - Wolfgang Wohlleben
- Department of Microbiology/Biotechnology, Interfaculty Institute of Microbiology and Infection Medicine, Tübingen (IMIT), Cluster of Excellence ‘Controlling Microbes to Fight Infections’, University of Tübingen, Auf der Morgenstelle 28, 72076 Tübingen, Germany; (I.H.); (J.K.); (A.K.); (W.W.)
| | - Saefuddin Aziz
- Department of Pharmaceutical Biology, Institute of Pharmaceutical Sciences, University of Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany; (H.S.); (S.A.); (H.G.)
| | - Harald Gross
- Department of Pharmaceutical Biology, Institute of Pharmaceutical Sciences, University of Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany; (H.S.); (S.A.); (H.G.)
| | - Athina Gavriilidou
- Applied Natural Products Genome Mining, Interfaculty Institute of Microbiology and Infection Medicine Tübingen (IMIT), Cluster of Excellence ‘Controlling Microbes to Fight Infections’, University of Tübingen, Auf der Morgenstelle 28, 72076 Tübingen, Germany; (A.G.); (N.Z.)
| | - Nadine Ziemert
- Applied Natural Products Genome Mining, Interfaculty Institute of Microbiology and Infection Medicine Tübingen (IMIT), Cluster of Excellence ‘Controlling Microbes to Fight Infections’, University of Tübingen, Auf der Morgenstelle 28, 72076 Tübingen, Germany; (A.G.); (N.Z.)
- German Center for Infection Research (DZIF), Partner Site Tübingen, 72076 Tübingen, Germany
| | - Yvonne Mast
- Department of Microbiology/Biotechnology, Interfaculty Institute of Microbiology and Infection Medicine, Tübingen (IMIT), Cluster of Excellence ‘Controlling Microbes to Fight Infections’, University of Tübingen, Auf der Morgenstelle 28, 72076 Tübingen, Germany; (I.H.); (J.K.); (A.K.); (W.W.)
- German Center for Infection Research (DZIF), Partner Site Tübingen, 72076 Tübingen, Germany
- Department of Bioresources for Bioeconomy and Health Research, Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, 38124 Braunschweig, Germany
- Department of Microbiology, Technical University of Braunschweig, 38124 Braunschweig, Germany
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Schorn MA, Verhoeven S, Ridder L, Huber F, Acharya DD, Aksenov AA, Aleti G, Moghaddam JA, Aron AT, Aziz S, Bauermeister A, Bauman KD, Baunach M, Beemelmanns C, Beman JM, Berlanga-Clavero MV, Blacutt AA, Bode HB, Boullie A, Brejnrod A, Bugni TS, Calteau A, Cao L, Carrión VJ, Castelo-Branco R, Chanana S, Chase AB, Chevrette MG, Costa-Lotufo LV, Crawford JM, Currie CR, Cuypers B, Dang T, de Rond T, Demko AM, Dittmann E, Du C, Drozd C, Dujardin JC, Dutton RJ, Edlund A, Fewer DP, Garg N, Gauglitz JM, Gentry EC, Gerwick L, Glukhov E, Gross H, Gugger M, Guillén Matus DG, Helfrich EJN, Hempel BF, Hur JS, Iorio M, Jensen PR, Kang KB, Kaysser L, Kelleher NL, Kim CS, Kim KH, Koester I, König GM, Leao T, Lee SR, Lee YY, Li X, Little JC, Maloney KN, Männle D, Martin H C, McAvoy AC, Metcalf WW, Mohimani H, Molina-Santiago C, Moore BS, Mullowney MW, Muskat M, Nothias LF, O'Neill EC, Parkinson EI, Petras D, Piel J, Pierce EC, Pires K, Reher R, Romero D, Roper MC, Rust M, Saad H, Saenz C, Sanchez LM, Sørensen SJ, Sosio M, Süssmuth RD, Sweeney D, Tahlan K, Thomson RJ, Tobias NJ, Trindade-Silva AE, van Wezel GP, Wang M, Weldon KC, Zhang F, Ziemert N, Duncan KR, Crüsemann M, Rogers S, Dorrestein PC, Medema MH, van der Hooft JJJ. A community resource for paired genomic and metabolomic data mining. Nat Chem Biol 2021; 17:363-368. [PMID: 33589842 PMCID: PMC7987574 DOI: 10.1038/s41589-020-00724-z] [Citation(s) in RCA: 73] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Genomics and metabolomics are widely used to explore specialized metabolite diversity. The Paired Omics Data Platform is a community initiative to systematically document links between metabolome and (meta)genome data, aiding identification of natural product biosynthetic origins and metabolite structures.
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Affiliation(s)
- Michelle A Schorn
- Laboratory of Microbiology, Department of Agricultural and Food Sciences, Wageningen University, Wageningen, the Netherlands
- Bioinformatics Group, Wageningen University, Wageningen, the Netherlands
| | | | - Lars Ridder
- Netherlands eScience Center, Amsterdam, the Netherlands
| | - Florian Huber
- Netherlands eScience Center, Amsterdam, the Netherlands
| | - Deepa D Acharya
- Wisconsin Institute for Discovery and Department of Plant Pathology, University of Wisconsin-Madison, Madison, WI, USA
| | - Alexander A Aksenov
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA, USA
| | - Gajender Aleti
- Department of Psychiatry, University of California San Diego, San Diego, CA, USA
| | - Jamshid Amiri Moghaddam
- Leibniz Institute for Natural Product Research and Infection Biology e.V. Hans-Knöll-Institute (HKI), Jena, Germany
| | - Allegra T Aron
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA, USA
| | - Saefuddin Aziz
- Pharmaceutical Biology Department, Pharmaceutical Institute, Eberhard Karls University Tübingen, Tübingen, Germany
- Microbiology Department, Biology Faculty, Jenderal Soedirman University, Purwokerto, Indonesia
| | - Anelize Bauermeister
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA, USA
- Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Katherine D Bauman
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA
| | - Martin Baunach
- University of Potsdam, Institute of Biochemistry and Biology, Potsdam-Golm, Germany
| | - Christine Beemelmanns
- Leibniz Institute for Natural Product Research and Infection Biology e.V. Hans-Knöll-Institute (HKI), Jena, Germany
| | - J Michael Beman
- Department of Life and Environmental Sciences, University of California Merced, Merced, CA, USA
- Sierra Nevada Research Institute, University of California Merced, Merced, CA, USA
| | - María Victoria Berlanga-Clavero
- Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora", Universidad de Málaga-Consejo Superior de Investigaciones Científicas, Departamento de Microbiología, Universidad de Málaga, Málaga, Spain
| | - Alex A Blacutt
- Department of Microbiology and Plant Pathology, University of California Riverside, Riverside, CA, USA
| | - Helge B Bode
- Molecular Biotechnology, Department of Biosciences, Goethe University Frankfurt, Frankfurt am Main, Germany
- Buchmann Institute for Molecular Life Sciences, Goethe University Frankfurt, Frankfurt am Main, Germany
- Senckenberg Gesellschaft für Naturforschung, Frankfurt am Main, Germany
- Max-Planck-Institute for Terrestrial Microbiology, Department of Natural Products in Organismic Interactions, Marburg, Germany
| | - Anne Boullie
- Institut Pasteur, Collection of Cyanobacteria, Paris, France
| | - Asker Brejnrod
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA, USA
| | - Tim S Bugni
- Pharmaceutical Sciences Division, University of Wisconsin-Madison, Madison, WI, USA
| | - Alexandra Calteau
- Laboratoire d'Analyses Bioinformatiques pour la Génomique et le Métabolisme, Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ Evry, Université Paris-Saclay, Evry, France
| | - Liu Cao
- Computational Biology Department, School of Computer Science, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Víctor J Carrión
- Microbial Biotechnology, Institute of Biology, Leiden University, Leiden, the Netherlands
- Department of Microbial Ecology, Netherlands Institute of Ecology, Wageningen, the Netherlands
| | - Raquel Castelo-Branco
- Interdisciplinary Centre of Marine and Environmental Research), University of Porto, Porto, Portugal
- Faculty of Sciences, University of Porto, Porto, Portugal
- Department of Microbiology, University of Helsinki, Helsinki, Finland
| | - Shaurya Chanana
- Wisconsin Institute for Discovery and Department of Plant Pathology, University of Wisconsin-Madison, Madison, WI, USA
| | - Alexander B Chase
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA
| | - Marc G Chevrette
- Wisconsin Institute for Discovery and Department of Plant Pathology, University of Wisconsin-Madison, Madison, WI, USA
| | | | - Jason M Crawford
- Department of Chemistry, Yale University, New Haven, CT, USA
- Chemical Biology Institute, Yale University, West Haven, CT, USA
- Department of Microbial Pathogenesis, Yale School of Medicine, New Haven, CT, USA
| | - Cameron R Currie
- Department of Bacteriology, University of Wisconsin-Madison, Madison, WI, USA
- Department of Energy Great Lakes Bioenergy Research Center, Wisconsin Energy Institute, University of Wisconsin-Madison, Madison, WI, USA
| | - Bart Cuypers
- Adrem Data Lab, Department of Computer Science, University of Antwerp, Antwerp, Belgium
- Molecular Parasitology Unit, Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
| | - Tam Dang
- Technische Universität Berlin, Institut für Chemie, Berlin, Germany
| | - Tristan de Rond
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA
| | - Alyssa M Demko
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA
| | - Elke Dittmann
- University of Potsdam, Institute of Biochemistry and Biology, Potsdam-Golm, Germany
| | - Chao Du
- Microbial Biotechnology, Institute of Biology, Leiden University, Leiden, the Netherlands
| | - Christopher Drozd
- Department of Microbiology and Plant Pathology, University of California Riverside, Riverside, CA, USA
| | - Jean-Claude Dujardin
- Molecular Parasitology Unit, Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
| | - Rachel J Dutton
- Division of Biological Sciences, University of California San Diego, La Jolla, CA, USA
- Center for Microbiome Innovation, University of California San Diego, La Jolla, CA, USA
| | - Anna Edlund
- J. Craig Venter Institute, Genomic Medicine Group, La Jolla, CA, USA
- Department of Pediatrics, School of Medicine, University of California San Diego, La Jolla, CA, USA
| | - David P Fewer
- Department of Microbiology, University of Helsinki, Helsinki, Finland
| | - Neha Garg
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, USA
| | - Julia M Gauglitz
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA, USA
| | - Emily C Gentry
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA, USA
| | - Lena Gerwick
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA
| | - Evgenia Glukhov
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA
| | - Harald Gross
- Pharmaceutical Biology Department, Pharmaceutical Institute, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Muriel Gugger
- Institut Pasteur, Collection of Cyanobacteria, Paris, France
| | - Dulce G Guillén Matus
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA
| | - Eric J N Helfrich
- Molecular Biotechnology, Department of Biosciences, Goethe University Frankfurt, Frankfurt am Main, Germany
- Senckenberg Gesellschaft für Naturforschung, Frankfurt am Main, Germany
- Institute of Microbiology, Eidgenössische Technische Hochschule (ETH) Zürich, Zürich, Switzerland
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Harvard University, Boston, MA, USA
| | - Benjamin-Florian Hempel
- Technische Universität Berlin, Institut für Chemie, Berlin, Germany
- Charité, University Medicine Berlin, Berlin-Brandenburg Center for Regenerative Therapy (BCRT), Campus Virchow Klinikum, Berlin, Germany
| | - Jae-Seoun Hur
- Korean Lichen Research Institute, Sunchon National University, Sunchon, Republic of Korea
| | | | - Paul R Jensen
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA
| | - Kyo Bin Kang
- College of Pharmacy, Sookmyung Women's University, Seoul, Korea
| | - Leonard Kaysser
- Pharmaceutical Biology Department, Pharmaceutical Institute, Eberhard Karls University Tübingen, Tübingen, Germany
- German Centre for Infection Research (DZIF), Tübingen, Germany
| | - Neil L Kelleher
- Department of Chemistry, Northwestern University, Evanston, IL, USA
| | - Chung Sub Kim
- Department of Chemistry, Yale University, New Haven, CT, USA
- Chemical Biology Institute, Yale University, West Haven, CT, USA
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Irina Koester
- Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA
| | - Gabriele M König
- Institute for Pharmaceutical Biology, University of Bonn, Bonn, Germany
| | - Tiago Leao
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA, USA
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA
| | - Seoung Rak Lee
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
- Department of Chemistry, Princeton University, Princeton, NJ, USA
| | - Yi-Yuan Lee
- Computational Biology Department, School of Computer Science, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Xuanji Li
- Section of Microbiology, University of Copenhagen, Copenhagen, Denmark
| | - Jessica C Little
- Department of Pharmaceutical Sciences, University of Illinois at Chicago, Chicago, IL, USA
| | | | - Daniel Männle
- Pharmaceutical Biology Department, Pharmaceutical Institute, Eberhard Karls University Tübingen, Tübingen, Germany
- German Centre for Infection Research (DZIF), Tübingen, Germany
- Interfaculty Institute for Microbiology and Infection Medicine Tübingen, Microbiology and Biotechnology, University of Tübingen, Tübingen, Germany
| | - Christian Martin H
- Centro de Biodiversidad y Descubrimiento de Drogas, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología, Panama, Republic of Panama
| | - Andrew C McAvoy
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, USA
| | - Willam W Metcalf
- Carl R. Woese Institute for Genomic Biology and Department of Microbiology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Hosein Mohimani
- Computational Biology Department, School of Computer Science, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Carlos Molina-Santiago
- Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora", Universidad de Málaga-Consejo Superior de Investigaciones Científicas, Departamento de Microbiología, Universidad de Málaga, Málaga, Spain
| | - Bradley S Moore
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA
- Center for Microbiome Innovation, University of California San Diego, La Jolla, CA, USA
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA, USA
| | | | - Mitchell Muskat
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA
| | - Louis-Félix Nothias
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA, USA
| | - Ellis C O'Neill
- School of Chemistry, University of Nottingham, Nottingham, UK
| | - Elizabeth I Parkinson
- Department of Chemistry and Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN, USA
| | - Daniel Petras
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA, USA
- Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA
| | - Jörn Piel
- Institute of Microbiology, Eidgenössische Technische Hochschule (ETH) Zürich, Zürich, Switzerland
| | - Emily C Pierce
- Division of Biological Sciences, University of California San Diego, La Jolla, CA, USA
| | - Karine Pires
- Instituto Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Raphael Reher
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA
| | - Diego Romero
- Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora", Universidad de Málaga-Consejo Superior de Investigaciones Científicas, Departamento de Microbiología, Universidad de Málaga, Málaga, Spain
| | - M Caroline Roper
- Department of Microbiology and Plant Pathology, University of California Riverside, Riverside, CA, USA
| | - Michael Rust
- Institute of Microbiology, Eidgenössische Technische Hochschule (ETH) Zürich, Zürich, Switzerland
| | - Hamada Saad
- Pharmaceutical Biology Department, Pharmaceutical Institute, Eberhard Karls University Tübingen, Tübingen, Germany
- Phytochemistry and Plant Systematics Department, Division of Pharmaceutical Industries, National Research Centre, Cairo, Egypt
| | - Carmen Saenz
- The Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Laura M Sanchez
- Department of Pharmaceutical Sciences, University of Illinois at Chicago, Chicago, IL, USA
| | | | | | | | - Douglas Sweeney
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA
| | - Kapil Tahlan
- Department of Biology, Memorial University of Newfoundland, St. John's, Canada
| | - Regan J Thomson
- Department of Chemistry, Northwestern University, Evanston, IL, USA
| | - Nicholas J Tobias
- Senckenberg Gesellschaft für Naturforschung, Frankfurt am Main, Germany
- LOEWE-Centre for Translational Biodiversity Genomics, Frankfurt am Main, Germany
| | - Amaro E Trindade-Silva
- Departamento de Fisiologia e Farmacologia, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, Ceará, Brazil
| | - Gilles P van Wezel
- Microbial Biotechnology, Institute of Biology, Leiden University, Leiden, the Netherlands
| | - Mingxun Wang
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA, USA
| | - Kelly C Weldon
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA, USA
- Center for Microbiome Innovation, University of California San Diego, La Jolla, CA, USA
| | - Fan Zhang
- Pharmaceutical Sciences Division, University of Wisconsin-Madison, Madison, WI, USA
| | - Nadine Ziemert
- German Centre for Infection Research (DZIF), Tübingen, Germany
- Interfaculty Institute for Microbiology and Infection Medicine Tübingen, Microbiology and Biotechnology, University of Tübingen, Tübingen, Germany
| | - Katherine R Duncan
- University of Strathclyde, Strathclyde Institute of Pharmacy and Biomedical Sciences, Glasgow, UK
| | - Max Crüsemann
- Institute for Pharmaceutical Biology, University of Bonn, Bonn, Germany
| | - Simon Rogers
- School of Computing Science, University of Glasgow, Glasgow, UK
| | - Pieter C Dorrestein
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA, USA.
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA.
- Center for Microbiome Innovation, University of California San Diego, La Jolla, CA, USA.
- Department of Pharmacology and Pediatrics, University of California San Diego, La Jolla, CA, USA.
| | - Marnix H Medema
- Bioinformatics Group, Wageningen University, Wageningen, the Netherlands.
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Abando N, Saad H, Monclús M, Deville S, Molina-Aldareguia J, Roa J. Anisotropy effect of bioinspired ceramic/ceramic composites: Can the platelet orientation enhance the mechanical properties at micro- and submicrometric length scale? Ann Ital Chir 2021. [DOI: 10.1016/j.jeurceramsoc.2020.12.039] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Shuldiner SR, Wong LY, Peterson TE, Wolfson J, Jermy S, Saad H, Lumbamba MAJ, Singh A, Shey M, Meintjes G, Ntusi N, Ntsekhe M, Baker JV. Myocardial Fibrosis Among Antiretroviral Therapy-Treated Persons With Human Immunodeficiency Virus in South Africa. Open Forum Infect Dis 2021; 8:ofaa600. [PMID: 33511232 PMCID: PMC7813208 DOI: 10.1093/ofid/ofaa600] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 12/05/2020] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Heart failure is a prominent cardiovascular disease (CVD) manifestation in sub-Sarahan Africa. Myocardial fibrosis is a central feature of heart failure that we aimed to characterize among persons with human immunodeficiency virus (PWH) in South Africa. METHODS Cardiovascular magnetic resonance (CMR) imaging was performed among PWH with viral suppression and uninfected controls, both free of known CVD. Plasma levels of N-terminal pro B-type natriuretic peptide (NT-proBNP) were measured. Comparisons by human immunodeficiency virus (HIV) status were made using linear and logistic regression, adjusted for age, sex, and hypertension. RESULTS One hundred thirty-four PWH and 95 uninfected persons completed CMR imaging; age was 50 and 49 years, with 63% and 67% female, respectively. Compared with controls, PWH had greater myocardial fibrosis by extracellular volume fraction ([ECV] absolute difference, 1.2%; 95% confidence interval [CI], 0.1-2.3). In subgroup analyses, the effect of HIV status on ECV was more prominent among women. Women (vs controls) were also more likely to have elevated NT-proBNP levels (>125 pg/mL; odds ratio, 2.4; 95% CI, 1.0-6.0). Among all PWH, an elevated NT-proBNP level was associated with higher ECV (3.4% higher; 95% CI, 1.3-5.5). CONCLUSIONS Human immunodeficiency virus disease may contribute to myocardial fibrosis, with an effect more prominent among women. Research is needed to understand heart failure risk among PWH within sub-Saharan Africa.
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Affiliation(s)
- Scott R Shuldiner
- Department of Medicine, Johns Hopkins University, Baltimore, Maryland, USA
| | - Lye-Yeng Wong
- Department of Surgery, Oregon Health and Science University, Portland, Oregon, USA
| | - Tess E Peterson
- School of Public Health, University of Minnesota, Minneapolis, Minnesota, USA
| | - Julian Wolfson
- School of Public Health, University of Minnesota, Minneapolis, Minnesota, USA
| | - S Jermy
- Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - H Saad
- Department of Medicine, University of Cape Town, Cape Town, South Africa
| | | | - A Singh
- Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - M Shey
- Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - G Meintjes
- Department of Medicine, University of Cape Town, Cape Town, South Africa
- Wellcome Centre for Infectious Diseases Research in Africa, Cape Town, South Africa
- Institute of Infectious Disease and Molecular Medicine, Cape Town, South Africa
| | - N Ntusi
- Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - M Ntsekhe
- Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - J V Baker
- Hennepin Healthcare Research Institute, Minneapolis, Minnesota, USA
- Department of Medicine, University of Minnesota, Minneapolis, Minnesota, USA
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Jordan S, Saad H, Siemon J, Pinto A, Pearson J, Slomovitz B, Huang M, Schlumbrecht M, George S. Genetic profiling characteristics of patients with low-grade serous carcinoma of the ovary in a racially diverse population. Gynecol Oncol 2020. [DOI: 10.1016/j.ygyno.2020.05.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Saad H, Page A, Budzynska K, Sekyi-Djan M, Kouritas V, Bartosik W, Van Tornout F, Kadlec J. Pneumonectomy versus sleeve lobectomy: comparison of morbidity, mortality, survival: institutional report. Lung Cancer 2020. [DOI: 10.1016/s0169-5002(20)30096-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Saad H, Rahman MKA, Yusoff MHM, Kassim NSM, Yassin I. Simulation of U-shaped plastic optical fiber ethanol sensor. J Fundam and Appl Sci 2018. [DOI: 10.4314/jfas.v9i4s.23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Saad H, Rahman MA, Yassin I, Muad AM. Characterization of ethanol concentrations at ultraviolet wavelength region. J Fundam and Appl Sci 2018. [DOI: 10.4314/jfas.v9i4s.22] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Vedel I, Arsenault-Lapierre G, Ladores M, Saad H, Gagnon J, D’Souza V, Kremer B. EFFECT OF A PRIMARY CARE VIRTUAL WARD ON THE READMISSION RATES OF OLDER PATIENTS POST DISCHARGE. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- I. Vedel
- Lady Davis Institute, Jewish General Hospital, Montreal, Quebec, Canada,
- Department of Family Medicine, McGill University, Montreal, Quebec, Canada
| | | | - M. Ladores
- Herzl Family Practice Center, Jewish General Hospital, Montreal, Quebec, Canada,
| | - H. Saad
- Lady Davis Institute, Jewish General Hospital, Montreal, Quebec, Canada,
- Department of Family Medicine, McGill University, Montreal, Quebec, Canada
| | - J. Gagnon
- Department of Family Medicine, McGill University, Montreal, Quebec, Canada
| | - V. D’Souza
- Herzl Family Practice Center, Jewish General Hospital, Montreal, Quebec, Canada,
| | - B. Kremer
- Herzl Family Practice Center, Jewish General Hospital, Montreal, Quebec, Canada,
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Abstract
Invasive candidiasis (IC) is associated with increased morbidity and mortality. Although advances in diagnosis and management of this infection have been reached, there remain several controversies. The aim of this review is to tackle some of these controversies and shed light on studies that support the different sides of the arguments. Regarding central line-associated candidaemia, the current evidence appears to be more in favour of early central line removal whenever possible. Otherwise, antifungal agents such as echinocandins or polyenes should be the preferred agents. In the setting of infection with Candida parapsilosis and in light of the high minimum inhibitory concentrations (MICs) to echinocandins, azoles have been considered the preferred treatment agents. However, a recent study appears to indicate that empirical echinocandin use was not associated with a worse outcome when the isolated species was C. parapsilosis. Different strategies of antifungal treatment have been considered, namely prophylactic, empirical, pre-emptive or directed therapies. Whilst there is consensus on the need for prophylaxis in high-risk cancer patients, especially haematological malignancy and stem cell transplant populations, it remains debatable whether prophylaxis is of benefit in very low birthweight infants and in intensive care unit (ICU) patients. In the era of antifungal resistance and where antifungal stewardship has been advocated, pre-emptive therapy based on predictive models with various Candida risk scores and sensitive non-culture-based biomarkers such as β-d-glucan appears to be a more cost-effective approach. Future efforts should be directed to optimise clinical predictive models and reliable biomarkers for early detection of IC.
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Affiliation(s)
- A El Zakhem
- Division of Infectious Diseases, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - H Saad
- Division of Infectious Diseases, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - R Tayyar
- Division of Infectious Diseases, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - S S Kanj
- Division of Infectious Diseases, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon.
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Ktari K, Saidi R, Mahjoub M, Hamdouni W, Macherki S, Ben khalifa B, Hellara W, Saad H. Quels sont les facteurs prédictifs de la douleur lors du traitement des calculs rénaux par lithotritie extracorporelle ? Prog Urol 2015; 25:698-704. [DOI: 10.1016/j.purol.2015.07.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 07/18/2015] [Accepted: 07/24/2015] [Indexed: 11/26/2022]
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Altaf Bukhari S, Saad H, Batool K, Pathak D, Vohra A. Inadequate recording in perioperative transoesophageal views highlights the need for a standard approach in documentation of the views: a newly proposed format. J Cardiothorac Vasc Anesth 2015. [DOI: 10.1053/j.jvca.2015.05.264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Saad H, Khalil E, Bora SA, Parikh J, Abdalla H, Thum MY, Bina V, Roopa P, Shyamala S, Anupama A, Tournaye H, Polyzos NP, Guzman L, Nelson SM, Lourenco B, Sousa AP, Almeida-Santos T, Ramalho-Santos J, Okhowat J, Wirleitner B, Neyer T, Bach M, Murtinger M, Zech NH, Polyzos NP, Nwoye M, Corona R, Blockeel C, Stoop D, Camus M, Tournaye H, Rajikin MH, Kamsani YS, Chatterjee A, Nor-Ashikin MNK, Nuraliza AS, Scaravelli G, D'Aloja P, Bolli S, De Luca R, Spoletini R, Fiaccavento S, Speziale L, Vigiliano V, Farquhar C, Brown J, Arroll N, Gupta D, Boothroyd C, Al Bassam M, Moir J, Johnson N, Pantasri T, Robker RL, Wu LL, Norman RJ, Buzaglo K, Velez M, Shaulov T, Sylvestre C, Kadoch IJ, Krog M, Prior M, Carlsen E, Loft A, Pinborg A, Andersen AN, Dolleman M, Verschuren WMM, Eijkemans MJC, Dolle MET, Jansen EHJM, Broekmans FJM, Van der Schouw YT, Fainaru O, Pencovich N, Hantisteanu S, Barzilay I, Ellenbogen A, Hallak M, Cavagna M, Baruffi RLR, Petersen CG, Mauri AL, Massaro FC, Ricci J, Nascimento AM, Vagnini LD, Pontes A, Oliveira JBA, Franco JG, Canas MCT, Vagnini LD, Nascimento AM, Petersen CG, Mauri AL, Massaro FC, Nicoletti A, Martins AMVC, Cavagna M, Oliveira JBA, Baruffi RLR, Franco JG, Lichtblau I, Olivennes F, Aubriot FA, Junca AM, Belloc S, Cohen-Bacrie M, Cohen-Bacrie P, de Mouzon J, Nandy T, Caragia A, Balestrini S, Zosmer A, Sabatini L, Al-Shawaf T, Seshadri S, Khalaf Y, Sunkara SK, Joy J, Lambe M, Lutton D, Nicopoullos J, Bora SA, Parikh J, Faris R, Abdalla H, Thum MY, Behre HM, Howles CM, Longobardi S, Chimote N, Mehta B, Nath N, Chimote NM, Mehta B, Nath N, Chimote N, Chimote NM, Mine K, Yoshida A, Yonezawa M, Ono S, Abe T, Ichikawa T, Tomiyama R, Nishi Y, Kuwabara Y, Akira S, Takeshita T, Shin H, Song HS, Lim HJ, Hauzman E, Kohls G, Barrio A, Martinez-Salazar J, Iglesias C, Velasco JAG, Tejada MI, Maortua H, Mendoza R, Prieto B, Martinez-Bouzas C, Diez-Zapirain M, Martinez-Zilloniz N, Matorras R, Amaro A, Bianco B, Christofolini J, Mafra FA, Barbosa CP, Christofolini DM, Pesce R, Gogorza S, Ochoa C, Gil S, Saavedra A, Ciarmatori S, Perman G, Pagliardini L, Papaleo E, Corti L, Vanni VS, Ottolina J, de Michele F, Marca AL, Vigano P, Candiani M, Li L, Yin Q, Huang L, Huang J, He Z, Yang D, Parikh J, Bora SA, Abdalla H, Thum MY, Tiplady S, Ledger W, Godbert S, Hart S, Johnson S, Wong AWY, Kong GWS, Haines CJ, Franik S, Nelen W, Kremer J, Farquhar C, Gillett WR, Lamont JM, Peek JC, Herbison GP, Sung NY, Hwang YI, Choi MH, Song IO, Kang IS, Koong MK, Lee JS, Yang KM, Celtemen MB, Telli P, Karakaya C, Bozkurt N, Gursoy RH, Younis JS, Ben-Ami M, Pundir J, Pundir V, Omanwa K, Khalaf Y, El-Toukhy T. Female (in)fertility. Hum Reprod 2013. [DOI: 10.1093/humrep/det213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Alaya A, Hellara I, Belgith M, Nouri A, Hellara W, Neffati F, Saad H, Najjar M. Étude de la composition des calculs urinaires en fonction de l’âge dans la population du centre tunisien. Prog Urol 2012; 22:938-44. [DOI: 10.1016/j.purol.2012.07.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2011] [Revised: 07/29/2011] [Accepted: 07/12/2012] [Indexed: 11/30/2022]
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Alaya A, Nouri A, Belgith M, Saad H, Hell I, Hellara W, Jouini R, Najjar M. [Changes in kidney stones type according to sex and age in Tunisian patients]. Actas Urol Esp 2012; 36:171-7. [PMID: 22178342 DOI: 10.1016/j.acuro.2011.07.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2011] [Revised: 07/14/2011] [Accepted: 07/19/2011] [Indexed: 10/26/2022]
Abstract
BACKGROUND Studies that evaluate the effect of age and gender on the stone composition are scarce. The aim of this study is to highlight the modification of epidemiological characteristics of this pathology according to patients' sex and age. PATIENTS AND METHODS We studied 1269 urolithiasic patients ranging from 6 months to 92 years old and known as having urinary stones (752 males and 517 females). Stone analysis was performed respectively using a stereomicroscope and infrared spectroscopy to determine, respectively, the morphological type and molecular composition of each. RESULTS The annual average incidence of new stone formation was 30.25 per 100,000 inhabitants. In 1041 patients (81%), calculi were located in the upper urinary tract. Children and old man were more affected by bladder stone. Calcium oxalate monohydrate remains the most frequent stone component even if its frequency fell according to age (63.2% in teenagers and 40.6% in elderly [p<0.05]) in favour of the increase of uric acid stones (3,5% in teenagers and 41.5% in elderly [p<0.05]). Struvite stones were rare (3.5%) and more frequent in children. CONCLUSION The analysis of these data shows that urinary stones in Tunisia are tending to evolve in the same direction as in industrialized countries.
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Luo X, Fang F, Sun J, Xie J, Lee A, Zhang Q, Yu C, Breithardt O, Schiessl S, Schmid M, Seltmann M, Klinghammer L, Zeissler C, Kuechle M, Daniel W, Ege M, Guray U, Guray Y, Demirkan B, Kisacik H, Kim SE, Hong JY, Lee JH, Park DG, Han KR, Oh DJ, Ege M, Demirkan B, Guray U, Guray Y, Tufekcioglu O, Kisacik H, Cozma DC, Mornos C, Ionac A, Petrescu L, Tutuianu C, Dragulescu SI, Guimaraes L, Tavares G, Rodrigues A, Nagamatsu C, Fischer C, Vieira M, Oliveira W, Wilberg T, Cordovil A, Morhy S, Muraru D, Peluso M, Dal Bianco L, Beraldo M, Solda' E, Tuveri M, Cucchini U, Al Mamary A, Badano L, Iliceto S, Pizzuti A, Mabritto B, Derosa C, Tomasello A, Rovere M, Parrini I, Conte M, Lareva N, Govorin A, Cooper R, Sharif J, Somauroo JD, Hung JD, Porcelli V, Skevington R, Shahzad A, Scott S, Lindqvist P, Soderberg S, Gonzalez M, Tossavainen E, Henein M, Nciri N, Saad H, Nawas S, Ali A, Youssufzay A, Safi A, Faruk S, Yurdakul S, Erdemir V, Tayyareci Y, Yildirimturk O, Memic K, Aytekin V, Gurel M, Aytekin S, Przewlocka-Kosmala M, Cielecka-Prynda M, Mysiak A, Kosmala W, Mornos C, Ionac A, Pescariu S, Cozma D, Mornos A, Dragulescu S, Maurea N, Tocchetti CG, Coppola C, Quintavalle C, Rea D, Barbieri A, Piscopo G, Arra C, Condorelli G, Iaffaioli R, Dalen H, Thorstensen A, Moelmen H, Torp H, Stoylen A, Augustine D, Basagiannis C, Suttie J, Cox P, Aitzaz R, Lewandowski A, Lazdam M, Holloway C, Becher H, Leeson P, Radovanovic S, Djokovic A, Todic B, Zdravkovic M, Zaja-Simic M, Banicevic S, Lisulov-Popovic D, Krotin M, Grapsa J, O'regan D, Dawson D, Durighel G, Howard L, Gibbs J, Nihoyannopoulos P, Tulunay Kaya C, Kilickap M, Kurklu H, Ozbek N, Koca C, Kozluca V, Esenboga K, Erol C, Kusmierczyk-Droszcz B, Kowalik E, Niewiadomska J, Hoffman P, Satendra M, Sargento L, Lopes S, Longo S, Lousada N, Palma Reis R, Chillo P, Rieck A, Lwakatare J, Lutale J, Gerdts E, Bonapace S, Molon G, Targher G, Rossi A, Lanzoni L, Canali G, Campopiano E, Zenari L, Bertolini L, Barbieri E, Hristova K, Vladiomirova-Kitova L, Katova T, Nikolov F, Nikolov P, Georgieva S, Simova I, Kostova V, Kuznetsov VA, Krinochkin DV, Chandraratna PA, Pak YA, Zakharova EH, Plusnin AV, Semukhin MV, Gorbatenko EA, Yaroslavskaya EI, Bedetti G, Gargani L, Scalese M, Pizzi C, Sicari R, Picano E, Reali M, Canali E, Cimino S, Francone M, Mancone M, Scardala R, Boccalini F, Hiramoto Y, Frustaci A, Agati L, Savino K, Lilli A, Bordoni E, Riccini C, Ambrosio G, Silva D, Cortez-Dias N, Carrilho-Ferreira P, Jorge C, Silva-Marques J, Magalhaes A, Santos L, Ribeiro S, Pinto F, Nunes Diogo A, Kinova E, Zlatareva N, Goudev A, Bonanad C, Lopez-Lereu M, Monmeneu J, Bodi V, Sanchis J, Nunez J, Chaustre F, Llacer A, Muraru D, Beraldo M, Solda' E, Ermacora D, Cucchini U, Dal Bianco L, Peluso D, Di Lazzari M, Badano L, Iliceto S, Meimoun P, Elmkies F, Benali T, Boulanger J, Zemir H, Clerc J, Luycx-Bore A, Velasco Del Castillo MS, Cacicedo Fernandez De Bobadilla A, Onaindia Gandarias J, Telleria Arrieta M, Zugazabeitia Irazabal G, Quintana Raczka O, Rodriguez Sanchez I, Romero Pereiro A, Laraudogoitia Zaldumbide E, Lekuona Goya I, Bonello B, El Louali E, Fouilloux V, Kammache I, Ovaert C, Kreitmann B, Fraisse A, Migliore R, Adaniya M, Barranco M, Miramont G, Tamagusuku H, Alassar A, Sharma R, Marciniak A, Valencia O, Abdulkareem N, Jahangiri M, Jander N, Kienzle R, Gohlke-Baerwolf C, Gohlke H, Neumann FJ, Minners J, Valbuena S, De Torres F, Lopez T, Gomez JJ, Guzman G, Dominguez F, Refoyo E, Moreno M, Lopez-Sendon JL, Ancona R, Comenale Pinto S, Caso P, Di Salvo G, Severino S, Cavallaro M, Calabro R, Enache R, Muraru D, Piazza R, Roman-Pognuz A, Popescu B, Calin A, Beladan C, Purcarea F, Nicolosi G, Ginghina C, Savu O, Enache R, Popescu B, Calin A, Beladan C, Rosca M, Jurcut R, Serban M, Dorobantu L, Ginghina C, Donal E, Mascle S, Thebault C, Veillard D, Hamonic H, Leguerrier A, Corbineau H, Popa BA, Diena M, Bogdan A, Benea D, Lanzillo G, Casati V, Novelli E, Popa A, Cerin G, Gual Capllonch F, Teis A, Lopez Ayerbe J, Ferrer E, Vallejo N, Gomez Denia E, Bayes Genis A, Spethmann S, Schattke S, Baldenhofer G, Stangl V, Laule M, Baumann G, Stangl K, Knebel F, Labata C, Vallejo N, Gomez Denia E, Garcia Alonso C, Ferrer E, Gual F, Lopez Ayerbe J, Teis A, Nunez Aragon R, Bayes Genis A, Satendra M, Sargento L, Sousa C, Lousada N, Palma Reis R, Vasile AI, Dorobantu M, Iorgulescu C, Bogdan S, Constantinescu D, Caldararu C, Tautu O, Vatasescu R, Badran H, Elnoamany MF, Ayad M, Elshereef A, Farhan A, Nassar Y, Yacoub M, Costabel J, Avegliano G, Elissamburu P, Thierer J, Castro F, Huguet M, Frangi A, Ronderos R, Prinz C, Van Buuren F, Faber L, Bitter T, Bogunovic N, Burchert W, Horstkotte D, Kasprzak JD, Smialowski A, Rudzinski T, Lipiec P, Krzeminska-Pakula M, Wierzbowska-Drabik K, Trzos E, Kurpesa M, Motoki H, Hana M, Marwick T, Allan K, Vazquez-Alvarez M, Medrano Lopez C, Granja Da Silva S, Marcos C, Rodriguez-Ogando A, Alvarez M, Camino M, Centeno M, Maroto E, Feltes Guzman G, Serra Tomas V, Acevedo O, Calli A, Barba M, Pintos G, Valverde V, Zamorano Gomez J, Marchel M, Kochanowski J, Piatkowski R, Madej A, Filipiak K, Hausmanowa-Petrusewicz I, Opolski G, Malev E, Zemtsovsky E, Reeva S, Timofeev E, Pshepiy A, Mihaila S, Rimbas R, Mincu R, Dulgheru R, Mihaila R, Badiu C, Cinteza M, Vinereanu D, Rodrigues A, Guimaraes L, Lira E, Lebihan D, Monaco C, Cordovil A, Oliveira W, Vieira M, Fischer C, Morhy S, Ruiz Ortiz M, Mesa D, Delgado M, Romo E, Pena M, Puentes M, Santisteban M, Lopez Granados A, Arizon Del Prado J, Suarez De Lezo J, Tsai WC, Shih JY, Huang TS, Liu YW, Huang YY, Tsai LM, Cho E, Choi K, Kwon B, Kim D, Jang S, Park C, Jung H, Jeon H, Youn H, Kim J, Rieck AE, Cramariuc D, Lonnebakken M, Lund B, Gerdts E, Moceri P, Doyen D, Cerboni P, Ferrari E, Li W, Silva D, Goncalves S, Ribeiro S, Santos L, Sargento L, Vinhais De Sousa G, Almeida AG, Nunes Diogo A, Hernandez Garcia C, De La Rosa Hernandez A, Arroyo Ucar E, Jorge Perez P, Barragan Acea A, Lacalzada Almeida J, Jimenez Rivera J, Duque Garcia A, Laynez Cerdena I, Arhipov O, Sumin AN, Campens L, Renard M, Trachet B, Segers P, De Paepe A, De Backer J, Purvis JA, Sharma D, Hughes SM, Marek D, Vindis D, Kocianova E, Taborsky M, Yoon H, Kim K, Ahn Y, Chung M, Cho J, Kang J, Rha W, Ozcan O, Sezgin Ozcan D, Candemir B, Aras M, Dincer I, Atak R, Gianturco L, Turiel M, Atzeni F, Tomasoni L, Bruschi E, Epis O, Sarzi-Puttini P, Aggeli C, Poulidakis E, Felekos I, Sideris S, Dilaveris P, Gatzoulis K, Stefanadis C, Wierzbowska-Drabik K, Roszczyk N, Sobczak M, Lipiec P, Peruga J, Krecki R, Kasprzak J, Ishii K, Suyama T, Kataoka K, Furukawa A, Nagai T, Maenaka M, Seino Y, Musca F, De Chiara B, Moreo A, Epis O, Bruschi E, Cataldo S, Parolini M, Parodi O, Bombardini T, Faita F, Picano E, Park SJ, Kil JH, Kim SJ, Jang SY, Chang SA, Choi JO, Lee SC, Park S, Park P, Oh J, Cikes M, Velagic V, Biocina B, Gasparovic H, Djuric Z, Bijnens B, Milicic D, Huqi A, Klas B, He A, Paterson I, Irween M, Ezekovitz J, Choy J, Becher H, Chen Y, Cheng L, Yao R, Yao H, Chen H, Pan C, Shu X, Sobkowicz B, Kaminska M, Musial W, Kaminska M, Sobkowicz B, Musial W, Buechel R, Sommer G, Leibundgut G, Rohner A, Bremerich J, Kaufmann B, Kessel-Schaefer A, Handke M, Kiotsekoglou A, Saha S, Toole R, Sharma S, Gopal A, Adhya S, Tsang W, Kenny C, Kapetanakis S, Lang R, Monaghan M, Smith B, Grapsa J, Dawson D, Coulter T, Rendon A, Cheung WS, Gorissen W, Nihoyannopoulos P, Ejlersen JA, May O, Van Slochteren FJ, Van Der Spoel T, Hanssen H, Doevendans P, Chamuleau S, De Korte C, Tarr A, Stoebe S, Trache T, Kluge JG, Varga A, Hagendorff A, Nagy A, Kovacs A, Apor A, Sax B, Becker D, Merkely B, Lindquist R, Miller A, Reece C, Eidem BW, Choi WG, Kim S, Oh S, Kim Y, Iacobelli R, Chinali M, D' Asaro M, Toscano A, Del Pasqua A, Esposito C, Seghetti G, Parisi F, Pongiglione G, Rinelli G, Omaygenc O, Bakal R, Dogan C, Teber K, Akpinar S, Sahin G, Ozdemir N, Penhall A, Joseph M, Chong F, De Pasquale C, Selvanayagam J, Leong D, Nyktari EG, Patrianakos AP, Goudis C, Solidakis G, Parthenakis F, Vardas P, Nestaas E, Stoylen A, Fugelseth D, Vitarelli A, Capotosto L, Bernardi M, Conde Y, Caranci F, Placanica G, Dettori O, Vitarelli M, De Chiara S, De Cicco V, Ancona R, Comenale Pinto S, Caso P, Severino S, Cavallaro M, Ferro' M, Calabro' R, Apostolakis S, Chalikias G, Tziakas D, Stakos D, Thomaidi A, Konstantinides S, Vitarelli A, Caranci F, Capotosto L, Iorio G, Rucos R, Continanza G, De Cicco V, D Ascanio M, Alessandroni L, Saponara M, Berry M, Nahum J, Zaghden O, Monin J, Couetil J, Lairez O, Macron L, Dubois Rande J, Gueret P, Lim P, Cameli M, Giacomin E, Lisi M, Benincasa S, Righini F, Menci D, Focardi M, Mondillo S, Bonello B, Fouilloux V, Philip E, Gorincour G, Fraisse A, Bellsham-Revell H, Bell AJ, Miller OI, Beerbaum P, Razavi R, Greil G, Simpson JM, Ann S, Youn H, Jung H, Kim T, Lee J, Chin J, Kim T, Cabeza Lainez P, Escolar Camas V, Gheorghe L, Fernandez Garcia P, Vazquez Garcia R, Gargani L, Caiulo V, Caiulo S, Fisicaro A, Moramarco F, Latini G, Sicari R, Picano E, Seale A, Carvalho J, Gardiner H, Roughton M, Simpson J, Tometzki A, Uzun O, Webber S, Daubeney P, Elnoamany MF, Dawood A, Dwivedi G, Mahadevan G, Jiminez D, Steeds R, Frenneaux M, Attenhofer Jost CH, Knechtle B, Bernheim A, Pfyffer M, Linka A, Faeh-Gunz A, Seifert B, De Pasquale G, Zuber M, Simova I, Hristova K, Georgieva S, Kostova V, Katova T, Tomaszewski A, Kutarski A, Tomaszewski M. Poster Session 2: Thursday 8 December 2011, 14:00-18:00 * Location: Poster Area. European Journal of Echocardiography 2011. [DOI: 10.1093/ejechocard/jer208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Rasool BKA, Abu-Gharbieh E, Fahmy S, Saad H, Khan S. Development and evaluation of ibuprofen transdermal gel formulations. TROP J PHARM RES 2010. [DOI: 10.4314/tjpr.v9i4.58928] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Abdullah S, El-Nashar E, Saad H, Bahlool M. O7 Management of female stress urinary incontinence by trans-obturator vaginal tape (TVT-O). Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)60379-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Fredj N, Touffahi M, Saidi R, Lefi M, Achour A, Gahbiche M, Hafsa C, Zakhama A, Saad H. Anurie obstructive par “fungus balls”: A propos de 3 cas. Afr J Urol 2008. [DOI: 10.1007/bf02994514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Lefi M, Touffahi M, Zakhama W, Saad H. Lettre à la rédaction. Prog Urol 2007; 17:1010. [DOI: 10.1016/s1166-7087(07)92411-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Saidi R, Farhane S, Touffahi M, Saad H. [Tethered cord syndrome: an unusual cause of adult bladder dysfunction]. Ann Urol (Paris) 2003; 37:187-93. [PMID: 12951711 DOI: 10.1016/s0003-4401(03)00046-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Tethered cord syndrome is a complication of spinal dysraphism. The tethering of the cord does not permit the normal cranial migration of the conus within the vertebral canal. The result is a neural dysfunction due to a traction neuropathy. Although this condition commonly presents in childhood, less severe degrees of tethering may remain asymptomatic until adult life. The authors report a new case of tethered cord syndrome in a 25-years-old young girl, cause of bladder dysfunction. Clear improvement of urinary repercussions is obtained after surgery.
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Affiliation(s)
- R Saidi
- Service d'urologie, EPS F.-Bourguiba, 5000 Monastir, Tunisie
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Thieblemont C, Dumontet C, Saad H, Roch N, Bouafia F, Arnaud P, Hequet O, Espinouse D, Salles G, Roy P, Eljaafari-Corbin A, Du Manoir-Baumgarten C, Coiffier B. Amifostine reduces mucosal damage after high-dose melphalan conditioning and autologous peripheral blood progenitor cell transplantation for patients with multiple myeloma. Bone Marrow Transplant 2002; 30:769-75. [PMID: 12439700 DOI: 10.1038/sj.bmt.1703757] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2002] [Accepted: 06/26/2002] [Indexed: 11/09/2022]
Abstract
High-dose melphalan (HDM) has been adopted as standard therapy in the treatment of multiple myeloma. This treatment is associated with non-selective cytotoxicity, causing oral mucositis as the major non-hematological side-effect. Amifostine is a cytoprotector which prevents toxicity induced by anticancer therapy. We prospectively compared two groups of patients who either received (group A, n = 21) or did not receive (group B, n = 20) amifostine (740 mg/m(2)) before HDM (200 mg/m(2)) followed by autologous peripheral blood progenitor cell transplantation. The occurrence of severe oral mucositis was significantly decreased in group A in comparison to group B (33% vs 65%, P < 0.05). Six patients in group A required opioid analgesic therapy during a mean period of 4.8 days as compared to eight patients for 6.5 days in group B (P = NS). Delayed vomiting was less frequent in group A (43% vs 70%, P = 0.07) and significantly less severe in group A (grade 2-4) vomiting: two patients vs nine patients, P < 0.02). No difference was observed between the two groups in either hematological toxicity after HDM or in response rate. Grade I emesis was the only immediate side-effect observed after amifostine administration. We conclude that amifostine can reduce mucositis induced by HDM.
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Affiliation(s)
- C Thieblemont
- Haematology Department, Centre Hospitalier Lyon-Sud, Pierre-Bénite, France
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Deeb A, Saad H. Pyridazine derivatives and related compounds, part 9. tetrazolo[1,5-b]pyridazine-8-carbohydrazide: synthesis and some reactions. Boll Chim Farm 2002; 141:118-21. [PMID: 12135159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
The reaction of the hydrazide of 6,7-diphenyltetrazolo[1,5-b]pyridazine-8-carboxylic acid 3 with aromatic aldehydes gave 8-arylidenecarbohydrazide derivatives. The reaction of 3 with methanesulfonyl chloride, benzenesulfonyl chloride, phenyl and benzylisothiocyanate afforded the corresponding N-substitute derivatives. The reaction of 3 with potassium ethylxanthate gave 5-(6,7-diphenyltetrazolo[1,5-b]pyridazin4-yl)-1,3,4-oxadiazole-2-thione 7. The alkylation of this product in an alkaline medium proceeds at the sulfur atom, while the aminomethylation and acylation proceed at the nitrogen atom. Compound 3 was also reacted with N-aminothiosemicarbazide to give 5-(6,7-diphenyltetrazolo[1,5-b]pyridazin-8 yl)4-amino-1,2,4-triazole-3-thione 11.
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Affiliation(s)
- A Deeb
- Department of Chemistry, Faculty of Science, Zagazig University, Egypt
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Hammoud D, Ammouri N, Rouhana G, Saad H, Husseini H, Abou Sleiman C, Haddad M. [Imaging features of retained surgical foreign bodies]. J Radiol 2001; 82:913-6. [PMID: 11604687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
PURPOSE To study the clinical and radiological manifestations in patients with retained surgical foreign bodies. PATIENTS AND METHODS Over the last five years, seven patients were found to have retained surgical foreign bodies after abdominal surgery. An analysis of the clinical signs, laboratory findings and imaging features was performed. RESULTS The clinical and laboratory data were non-specific. The diagnosis of textiloma was suggested based on imaging findings and surgical history before surgical exploration. The characteristic imaging findings at ultrasound and computed tomography consisted of a fluid collection with internal wavy structures. The differential diagnosis includes pyogenic abscesses, hematomas and ruptured hydatid cysts. CONCLUSION Ultrasonography and computed tomography are essential for the diagnosis and management of retained surgical foreign bodies after abdominal surgery.
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Affiliation(s)
- D Hammoud
- Service de radiologie, Université Américaine de Beyrouth, France
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Hartung WM, Hartung D, Saad H, Mittag A, Mahnkopf D, Klein HU, Willems R. The importance of right atrial pacing electrode position and pacing configuration for intra-atrial and inter-atrial conduction times. J Interv Card Electrophysiol 2000; 4:405-13. [PMID: 10936006 DOI: 10.1023/a:1009858601764] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Pace prevention of atrial tachyarrhythmias is based in part on the reduction of intra-atrial (IAA) and/or inter-atrial (IEA) conduction. We previously introduced a novel pacing mode using floating atrial ring electrodes on a VDD-lead (BIdirectional MO nophasic impulSe: BIMOS). The effects of BIMOS pacing on IAA and IEA conduction times has not been studied. In nine Merino sheep electrode catheters were placed at the His-Bundle (HBE), high right atrium (HRA), coronary sinus ostium (Cs-Os), and left lateral atrium (LLA). A VDD-lead was introduced with floating electrodes in the high and mid right atrium (Floating). IAA (S/P-HRA, S/P-Cs-Os, S/P-HBE, S/P-Floating), IEA conduction times (S/P-LLA), and P-wave duration (PD) were measured during sinus rhythm (S), during bipolar cathodal pacing (P) in the HRA, in the Cs-Os position, as well as during BIMOS floating pacing. The mean PD during S was significantly shorter than during HRA- (66. 6+/-12.8ms; vs. 116.2+/-11.1ms; p<0.05) and Cs-Os-P (66.6+/-12.8ms vs. 94.4+/-9.0ms; p<0.05). In comparison to HRA-P, BIMOS configuration lead to a significant reduction of the P-wave duration (116.2+/-11.1ms vs. 85. 4+/-8.8ms; p<0.05). During BIMOS pacing, the global atrial conduction time was significantly shorter than during pacing in the HRA and Cs-Os position. The results of this study demonstrate a clear reduction of IAA and IEA conduction times using BIMOS configurations compared to conventional HRA-P. Furthermore, BIMOS pacing produced a more homogeneous atrial activation when compared with conventional HRA- and Cs-Os-P.
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Affiliation(s)
- W M Hartung
- University Hospital Magdeburg and Institute of Medicine Technology Magdeburg, Germany.
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Saad H, Willems R, Mittag A, Mahnkopf D, Goette A, Hobrack S, Reek S, Klein H, Hartung WM. [Not Available]. Herzschrittmacherther Elektrophysiol 2000; 11 Suppl 1:13-14. [PMID: 19495625 DOI: 10.1007/bf03042509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Affiliation(s)
- H Saad
- Klinik für Kardiologie, Angiologie, Pneumologie, Otto-von-Guericke-Universität, Magdeburg
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Hartung WM, Saad H, Willems R, Mittag A, Mahnkopf D, Goette A, Hobrack S, Reek S, Klein H. [Not Available]. Herzschrittmacherther Elektrophysiol 2000; 11 Suppl 1:7-8. [PMID: 19495622 DOI: 10.1007/bf03042506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Affiliation(s)
- W M Hartung
- Klinik für Kardiologie, Angiologie und Pneumologie, Otto-von-Guericke-Universität, Magdeburg
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Settmacher B, Bock D, Saad H, Gärtner S, Rheinheimer C, Köhl J, Bautsch W, Klos A. Modulation of C3a activity: internalization of the human C3a receptor and its inhibition by C5a. J Immunol 1999; 162:7409-16. [PMID: 10358194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
The C3a receptor (C3aR) is expressed on most human peripheral blood leukocytes with the exception of resting lymphocytes, implying a much higher pathophysiological relevance of the anaphylatoxin C3a as a proinflammatory mediator than previously thought. The response to this complement split product must be tightly regulated in situations with sustained complement activation to avoid deleterious effects caused by overactivated inflammatory cells. Receptor internalization, an important control mechanism described for G protein-coupled receptors, was investigated. Using rabbit polyclonal anti-serum directed against the C3aR second extracellular loop, a flow cytometry-based receptor internalization assay was developed. Within minutes of C3a addition to human granulocytes, C3aR almost completely disappeared from the cell surface. C3aR internalization could also be induced by PMA, an activator of protein kinase C. Similarly, monocytes, the human mast cell line HMC-1, and differentiated monocyte/macrophage-like U937-cells exhibited rapid agonist-dependent receptor internalization. Neither C5a nor FMLP stimulated any cross-internalization of the C3aR. On the contrary, costimulation of granulocytes with C5a, but not FMLP, drastically decreased C3aR internalization. This effect could be blocked by a C5aR-neutralizing mAb. HEK293-cells transfected with the C3aR, with or without Galpha16, a pertussis toxin-resistant G protein alpha subunit required for C3aR signal transduction in these cells, did not exhibit agonist-dependent C3aR internalization. Additionally, preincubation with pertussis toxin had no effect on C3a-induced internalization on PMNs. C3aR internalization is a rapid negative control mechanism and is influenced by the C5aR pathway.
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Affiliation(s)
- B Settmacher
- Institute of Medical Microbiology, Hannover Medical School, Germany
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Saidi R, Langar W, Toufahi M, Farhane S, Saad H. [Leiomyoma of the female urethra (case report and review of the literature]. Tunis Med 1999; 77:54-6. [PMID: 10333700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Chartier-Kastler E, Saad H, Mouquet C, Rudelle E, Benalia H, Luciani J, Bitker MO, Chatelain C. [Repeated renal transplantation]. Prog Urol 1993; 3:621-6. [PMID: 8401623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
From October 1987 to June 1992, 359 renal transplantations were performed, while, over the same period, 25 patients with a follow-up of more than six months underwent repeat renal transplantation: 23 for a second transplant and 2 for a third transplant. The initial disease was glomerular for 17 patients and interstitial for 6 patients. The mean age of the patients at the time of the repeat transplantation was 36.9 years (range: 20 to 53 years). The mean survival after the first transplantation was 3 years and 10 months (range: 1 week to 10 years). The reasons for loss of the first transplant can be classified as follows: acute rejection (n = 5), chronic rejection (n = 14), surgical failure (n = 5) or sepsis (n = 1). 9 patients received conventional immunosuppressant therapy, while 16 patients (64%) received four-drug therapy including cyclosporin. The actuarial one-year survival of the patients and the transplants was 100% and 92%, respectively. The mean serum creatinine was 136.4 +/- 65 mumol/l (range: 59 to 298 mumol/l). Ten patients developed rejection after a mean of 18.6 days (range: 6 to 30 days) and 2 patients suffered from 2 episodes of rejection within 4 months. These results illustrate the low postoperative surgical and immunological complication rate in this group of patients whose long-term results are at least comparable to those of first transplantations in our group.
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Saad H, Conort P, Chartier-Kastler E, Bitker MO, Sghaier MS, Chatelain C. [Posterior vertical lumbar incision in the treatment of pyelo-ureteral junction anomaly: report of 71 cases]. Prog Urol 1993; 3:424-8. [PMID: 8369820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Posterior vertical lumbar incision, described for the first time in 1869 by Simon, provides a simple access to the kidney and offers excellent exposure of the ureteropelvic junction. The technical modifications proposed by Gil Vernet facilitate access to the kidney and reduce the morbidity. The operative technique is described in detail and the authors report their retrospective experience of 71 cases of correction of ureteropelvic junction anomalies (stage 2, 3 and 4). The morbidity was low (19%). Patients returned to work by the 3rd week. 88% of good results were observed at 3 months (84% in initial stage and 4 lesions). This approach should be preferred to the lateral incision or the percutaneous approach due to the simplicity of the technique and the low complication rate.
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Affiliation(s)
- H Saad
- Service d'Urologie, CHU de Monastir, Tunisie
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Hamdi A, Ayachi R, Saad H, Gargouri R, Zouari K, Chebbah MS. [Hemiplegia revealing Budd-Chiari syndrome associated with celiac disease in an infant]. Presse Med 1990; 19:1011-2. [PMID: 2141148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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Hamdi A, Gargouri R, Chebbah MS, Saad H, Zouari K, Ayachi R, Tabka MH, Achour H. [Post-traumatic pancreatitis: a rare etiology of pseudocyst. Remarks about 3 cases]. J Chir (Paris) 1990; 127:296-7. [PMID: 2373749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- A Hamdi
- Service de Chirurgie Générale, C.H.U., Tunisie
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Abstract
Four new alkaloids, representing the first members of new groups of polyindolinic alkaloids, have been isolated from the aerial parts of CALYCODENDRON MILNEI along with other alkaloids. The names vatine, its stereoisomer vatine A, vatamine, and vatamidine are proposed. They are polymers of six, seven, and eight N(b)-methyltryptamine units, respectively.
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Affiliation(s)
- Y Adjibadé
- Université Louis Pasteur, Faculté de Pharmacie, Laboratoire de Pharmacognosie, B.P. 24, F-67401 Illkirch Cédex, France
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Abid I, Boujnah H, Barkia A, Saad H, Zmerli S. [The retrocaval ureter. Apropos of 3 cases]. Tunis Med 1986; 64:955-60. [PMID: 3590335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Saad H. [Treatment by HDM (house dust mite) of respiratory tract allergies to house dust acarians. Apropos of 300 cases]. Tunis Med 1986; 64:603-6. [PMID: 3787748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Barkia A, Saad H, Abid I, Zmerli S. [The psoas bladder. Apropos of 14 cases]. Tunis Med 1986; 64:435-8. [PMID: 3824548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Saad H. [Use of lincomycin in infectious respiratory pathology]. Tunis Med 1966; 44:387 passim. [PMID: 5984102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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