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Sellam AZ, Benlamoudi A, Cid CA, Dobelle L, Slama A, El Hillali Y, Taleb-Ahmed A. Deep Learning Solution for Quantification of Fluorescence Particles on a Membrane. SENSORS (BASEL, SWITZERLAND) 2023; 23:1794. [PMID: 36850392 PMCID: PMC9967937 DOI: 10.3390/s23041794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 01/28/2023] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
The detection and quantification of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) virus particles in ambient waters using a membrane-based in-gel loop-mediated isothermal amplification (mgLAMP) method can play an important role in large-scale environmental surveillance for early warning of potential outbreaks. However, counting particles or cells in fluorescence microscopy is an expensive, time-consuming, and tedious task that only highly trained technicians and researchers can perform. Although such objects are generally easy to identify, manually annotating cells is occasionally prone to fatigue errors and arbitrariness due to the operator's interpretation of borderline cases. In this research, we proposed a method to detect and quantify multiscale and shape variant SARS-CoV-2 fluorescent cells generated using a portable (mgLAMP) system and captured using a smartphone camera. The proposed method is based on the YOLOv5 algorithm, which uses CSPnet as its backbone. CSPnet is a recently proposed convolutional neural network (CNN) that duplicates gradient information within the network using a combination of Dense nets and ResNet blocks, and bottleneck convolution layers to reduce computation while at the same time maintaining high accuracy. In addition, we apply the test time augmentation (TTA) algorithm in conjunction with YOLO's one-stage multihead detection heads to detect all cells of varying sizes and shapes. We evaluated the model using a private dataset provided by the Linde + Robinson Laboratory, California Institute of Technology, United States. The model achieved a mAP@0.5 score of 90.3 in the YOLOv5-s6.
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Koch A, Pizanis N, Ayoub G, Slama A, Weymann A, Bessa V, Taube C, Aigner C, Ruhparwar A, Kamler M. Use of Ex Vivo Lung Perfusion for Lung Transplantation: Midterm Results. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Chavany J, Cano A, Roquelaure B, Bourgeois P, Boubnova J, Gaignard P, Hoebeke C, Reynaud R, Rhomer B, Slama A, Badens C, Chabrol B, Fabre A. Mutations in NBAS and SCYL1, genetic causes of recurrent liver failure in children: Three case reports and a literature review. Arch Pediatr 2020; 27:155-159. [DOI: 10.1016/j.arcped.2020.01.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 12/15/2019] [Accepted: 01/25/2020] [Indexed: 12/14/2022]
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Besa V, Cherneha M, Weinreich G, Slama A, Sommerwerck U, Taube C, Aigner C, Kamler M, Wilde B, Witzke O. Increased Phosphorylation of p70S6 Kinase is Associated With CMV Reactivation in Lung Transplant Patients. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Bessa V, Cherneha M, Weinreich G, Slama A, Teschler H, Taube C, Aigner C, Wilde B, Witzke O. Die Rolle der Phosphorylierung der p70S6 Kinase bei Lungentransplantation. Pneumologie 2018. [DOI: 10.1055/s-0037-1619180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Kim JS, Wilde B, Witzke O, Heinemann FM, Slama A, Aigner C, Kamler M, Taube C, Teschler H, Bessa V. Antibody-mediated rejection after lung transplantation (LTX) with and without donor specific antibodies? Pneumologie 2018. [DOI: 10.1055/s-0037-1619181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Gaignard P, Fréchou M, Liere P, Thérond P, Schumacher M, Slama A, Guennoun R. Sex differences in brain mitochondrial metabolism: influence of endogenous steroids and stroke. J Neuroendocrinol 2018. [PMID: 28650095 DOI: 10.1111/jne.12497] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Steroids are neuroprotective and a growing body of evidence indicates that mitochondria are a potential target of their effects. The mitochondria are the site of cellular energy synthesis, regulate oxidative stress and play a key role in cell death after brain injury and neurodegenerative diseases. After providing a summary of the literature on the general functions of mitochondria and the effects of sex steroid administrations on mitochondrial metabolism, we summarise and discuss our recent findings concerning sex differences in brain mitochondrial function under physiological and pathological conditions. To analyse the influence of endogenous sex steroids, the oxidative phosphorylation system, mitochondrial oxidative stress and brain steroid levels were compared between male and female mice, either intact or gonadectomised. The results obtained show that females have higher a mitochondrial respiration and lower oxidative stress compared to males and also that these differences were suppressed by ovariectomy but not orchidectomy. We have also shown that the decrease in brain mitochondrial respiration induced by ischaemia/reperfusion is different according to sex. In both sexes, treatment with progesterone reduced the ischaemia/reperfusion-induced mitochondrial alterations. Our findings indicate sex differences in brain mitochondrial function under physiological conditions, as well as after stroke, and identify mitochondria as a target of the neuroprotective properties of progesterone. Thus, it is necessary to investigate sex specificity in brain physiopathological mechanisms, especially when mitochondria impairment is involved.
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Lebigot E, Gaignard P, Dorboz I, Slama A, Rio M, de Lonlay P, Héron B, Sabourdy F, Boespflug-Tanguy O, Cardoso A, Habarou F, Ottolenghi C, Thérond P, Bouton C, Golinelli-Cohen MP, Boutron A. Impact of mutations within the [Fe-S] cluster or the lipoic acid biosynthesis pathways on mitochondrial protein expression profiles in fibroblasts from patients. Mol Genet Metab 2017; 122:85-94. [PMID: 28803783 DOI: 10.1016/j.ymgme.2017.08.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 08/01/2017] [Accepted: 08/01/2017] [Indexed: 12/24/2022]
Abstract
Lipoic acid (LA) is the cofactor of the E2 subunit of mitochondrial ketoacid dehydrogenases and plays a major role in oxidative decarboxylation. De novo LA biosynthesis is dependent on LIAS activity together with LIPT1 and LIPT2. LIAS is an iron‑sulfur (Fe-S) cluster-containing mitochondrial protein, like mitochondrial aconitase (mt-aco) and some subunits of respiratory chain (RC) complexes I, II and III. All of them harbor at least one [Fe-S] cluster and their activity is dependent on the mitochondrial [Fe-S] cluster (ISC) assembly machinery. Disorders in the ISC machinery affect numerous Fe-S proteins and lead to a heterogeneous group of diseases with a wide variety of clinical symptoms and combined enzymatic defects. Here, we present the biochemical profiles of several key mitochondrial [Fe-S]-containing proteins in fibroblasts from 13 patients carrying mutations in genes encoding proteins involved in either the lipoic acid (LIPT1 and LIPT2) or mitochondrial ISC biogenesis (FDX1L, ISCA2, IBA57, NFU1, BOLA3) pathway. Ten of them are new patients described for the first time. We confirm that the fibroblast is a good cellular model to study these deficiencies, except for patients presenting mutations in FDX1L and a muscular clinical phenotype. We find that oxidative phosphorylation can be affected by LA defects in LIPT1 and LIPT2 patients due to excessive oxidative stress or to another mechanism connecting LA and respiratory chain activity. We confirm that NFU1, BOLA3, ISCA2 and IBA57 operate in the maturation of [4Fe-4S] clusters and not in [2Fe-2S] protein maturation. Our work suggests a functional difference between IBA57 and other proteins involved in maturation of [Fe-S] proteins. IBA57 seems to require BOLA3, NFU1 and ISCA2 for its stability and NFU1 requires BOLA3. Finally, our study establishes different biochemical profiles for patients according to their mutated protein.
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Housmanou DC, Kyritsis I, Topac A, Slama A, Gafencu DA, Mardanzai H, Plönes T, Kampe S, Aigner C. P-261LEARNING CURVE FOR ROBOTIC LOBECTOMY: EXPERIENCE OF A HIGH VOLUME THORACIC CENTRE. Interact Cardiovasc Thorac Surg 2017. [DOI: 10.1093/icvts/ivx280.261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Koch A, Pizanis N, Olbertz C, Abou-Issa O, Slama A, Taube C, Aigner C, Jakob H, Kamler M. Ex-vivo-Lungenperfusion. ZEITSCHRIFT FUR HERZ THORAX UND GEFASSCHIRURGIE 2017. [DOI: 10.1007/s00398-017-0175-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Muller M, Ferlicot S, Guillaud-Bataille M, Le Teuff G, Genestie C, Deveaux S, Slama A, Poulalhon N, Escudier B, Albiges L, Soufir N, Avril MF, Gardie B, Saldana C, Allory Y, Gimenez-Roqueplo AP, Bressac-de Paillerets B, Richard S, Benusiglio P. Reassessing the clinical spectrum associated with hereditary leiomyomatosis and renal cell carcinoma syndrome in French FH
mutation carriers. Clin Genet 2017; 92:606-615. [DOI: 10.1111/cge.13014] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 03/02/2017] [Accepted: 03/13/2017] [Indexed: 12/17/2022]
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Koch A, Pizanis N, Carstens H, Abou-Issa O, Slama A, Aigner C, Kamler M. Introduction of An Ex-vivo-lung-perfusion System in Germany. Thorac Cardiovasc Surg 2017. [DOI: 10.1055/s-0037-1598769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Slama A, Herkner S, Darwiche K, Welter S, Bonin F, Hoppensack F, Kampe S, Aigner C. Kurative Resektion von 9 Metastasen nach Pneumonektomie mit intraoperativer ECMO Unterstützung. Zentralbl Chir 2016. [DOI: 10.1055/s-0036-1587449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Cheufou DH, Welter S, Topac A, Nomair I, Slama A, Kampe S, Aigner C. Roboter in der Thoraxchirurgie – Erfahrung aus 80 Operationen mit dem Da Vinci System. Zentralbl Chir 2016. [DOI: 10.1055/s-0036-1587546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Slama A, Plönes T, Schmid KW, Kampe S, Aigner C. Interdisziplinäres Management eines ausgedehnten thorakalen Neuroblastoms bei einem 2-jährigen Kind. Zentralbl Chir 2016. [DOI: 10.1055/s-0036-1587472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Cheufou DH, Topac A, Welter S, Nomair I, Slama A, Kampe S, Aigner C. Roboter-assistierte Zwerchfellraffung – eine neue Technik für ein altes Problem. Zentralbl Chir 2016. [DOI: 10.1055/s-0036-1587549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Weiler L, Poulalhon N, Slama A, Guillaud-Bataille M, Thomas L. Isolated cutaneous leiomyosarcoma revealing a novel germline mutation of the fumarate hydratase gene. Br J Dermatol 2016; 175:1104-1106. [DOI: 10.1111/bjd.13867] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Shafaghi S, Najafizadeh K, Sheikhy K, Ansari Aval Z, Farzanegan B, Mafhoomi Y, Faghih Abdollahi Z, Emami H, Mortaz E, Porabdollah M, Jahangiri Fard A, Nikobayan Safaei M, Slama A, Aigner C, Hosseini-Baharanchi FS, Abbasi Dezfuli A. The First Experience of Ex-Vivo Lung Perfusion (EVLP) in Iran: An Effective Method to Increase Suitable Lung for Transplantation. Int J Organ Transplant Med 2016; 7:219-227. [PMID: 28078061 PMCID: PMC5219583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Although lung transplantation is a well-accepted treatment for end-stage lung diseases patients, only 15%-20% of the brain-dead donors' lungs are usable for transplantation. This results in high mortality of candidates on waiting lists. Ex-vivo lung perfusion (EVLP) is a novel method for better evaluation of a potential lung for transplantation. OBJECTIVE To report the first experience of EVLP in Iran. METHODS The study included a pig in Vienna Medical University, Vienna, Austria, and 4 humans in Masih Daneshvari Hospital, Tehran, Iran. All brain-dead donors from 2013 to 2015 in Tehran were evaluated for EVLP. Donors without signs of severe chest trauma or pneumonia, with poor oxygenation were included. RESULTS An increasing trend in difference between the pulmonary arterial pO2 and left atrial pO2, an increasing pattern in dynamic lung compliance, and a decreasing trend in the pulmonary vascular resistance, were observed. CONCLUSION The initial experience of EVLP in Iran was successful in terms of important/critical parameters. The results emphasize on some important considerations such as precisely following standard lung harvesting and monitoring temperature and pressure. EVLP technique may not be a cost-effective option for low-income countries at first glance. However, because this is the only therapeutic treatment for end-stage lung disease, it is advisable to continue working on this method to find alternatives with lesser costs.
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Tudor BA, Slama A, Roth GA, Krenn CG. Amphotericin B® treatment causes QT prolongation in lung transplant-patients. Intensive Care Med Exp 2015. [PMCID: PMC4796226 DOI: 10.1186/2197-425x-3-s1-a213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Slama A, Barta M, Schillab L, Mitterbauer A, Benedek A, Hoetzenecker K, Scheed A, Lang G, Matilla J, Taghavi S, Jaksch P, Klepetko W, Aigner C. F-129PHYSIOLOGICAL ASSESSMENT AND CLINICAL OUTCOMES OF EX-VIVO PERFUSED MARGINAL DONOR LUNGS. Interact Cardiovasc Thorac Surg 2015. [DOI: 10.1093/icvts/ivv204.129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Slama A, Schillab L, Barta M, Mitterbauer A, Hötzenecker K, Taghavi S, Lang G, Matilla J, Jaksch P, Klepetko W, Aigner C. A Prospective Randomized Trial of Ex Vivo Lung Perfusion in Standard Donor: Lungs: Can It Improve the Results? J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Slama A, Barta M, Schillab L, Mitterbauer A, Jaksch P, Hoetzenecker K, Klepetko W, Aigner C. Metabolic Assessment of Marginal Donor Lungs During Ex-Vivo Perfusion (EVLP): New Parameters for Decision Making. J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Benureau A, Meyer P, Maillet O, Leboucq N, Legras S, Jeziorski E, Fournier-Favre S, Jeandel C, Gaignard P, Slama A, Rivier F, Roubertie A, Carneiro M. [Mitochondrial neurogastrointestinal encephalopathy disease]. Arch Pediatr 2014; 21:1370-4. [PMID: 25282463 DOI: 10.1016/j.arcped.2014.08.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Revised: 04/09/2014] [Accepted: 08/13/2014] [Indexed: 11/18/2022]
Abstract
Mitochondrial neurogastrointestinal encephalopathy disease (MNGIE) is a rare autosomal-recessive syndrome, resulting from mutations in the TYMP gene, located at 22q13. The mutation induces a thymidine phosphorylase (TP) deficit, which leads to a nucleotide pool imbalance and to instability of the mitochondrial DNA. The clinical picture regroups gastrointestinal dysmotility, cachexia, ptosis, ophthalmoplegia, peripheral neuropathy, and asymptomatic leukoencephalopathy. The prognosis is unfavorable. We present the case of a 14-year-old Caucasian female whose symptoms started in early childhood. The diagnosis was suspected after magnetic resonance imaging (MRI), performed given the atypical features of mental anorexia, which revealed white matter abnormalities. She presented chronic vomiting, postprandial abdominal pain, and problems gaining weight accompanied by cachexia. This diagnosis led to establishing proper care, in particular an enteral and parenteral nutrition program. There is no known specific effective treatment, but numerous studies are in progress. In this article, after reviewing the existing studies, we discuss the main diagnostic and therapeutic aspects of the disease. We argue for the necessity of performing a cerebral MRI given the atypical features of a patient with suspected mental anorexia (or when the clinical pattern of a patient with mental anorexia seems atypical), so that MNGIE can be ruled out.
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Ram-Wolff C, Vignon-Pennamen MD, Slama A, Bagot M. Intérêt du TEP scanner (TDM) dans le lymphome T sous cutané à type de panniculite (LTSP) : présentation d’un cas et revue de la littérature. Ann Dermatol Venereol 2013. [DOI: 10.1016/j.annder.2013.09.275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Khochtali H, Naija S, Ayadi A, Ben Rjeb M, Maatemri W, Mziou Z, Ayachi S, Omezzine M, Slama A, Mootamri R. One-stage repair for bilateral cleft lip. Int J Oral Maxillofac Surg 2013. [DOI: 10.1016/j.ijom.2013.07.104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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