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Knani L, Oueslati M, Ben Khemis I, Ghachem M, Frini S, Moussa S, Mokni M, Ghorbel M. [Trichilemmal cyst of the eyelid: Clinical and histological features]. J Fr Ophtalmol 2024; 47:104003. [PMID: 37919152 DOI: 10.1016/j.jfo.2023.09.008] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 09/24/2023] [Accepted: 09/28/2023] [Indexed: 11/04/2023]
Affiliation(s)
- L Knani
- Service d'ophtalmologie, CHU Farhat Hached de Sousse, rue Ibn El Jazzar, 4000 Sousse, Tunisie; Faculté de médecine de Sousse, Université de Sousse, 4000 Sousse, Tunisie
| | - M Oueslati
- Service d'ophtalmologie, CHU Farhat Hached de Sousse, rue Ibn El Jazzar, 4000 Sousse, Tunisie.
| | - I Ben Khemis
- Service d'ophtalmologie, CHU Farhat Hached de Sousse, rue Ibn El Jazzar, 4000 Sousse, Tunisie
| | - M Ghachem
- Service d'ophtalmologie, CHU Farhat Hached de Sousse, rue Ibn El Jazzar, 4000 Sousse, Tunisie
| | - S Frini
- Laboratoire d'anatomie et de cytologie pathologiques, CHU Farhat Hached de Sousse, rue Ibn El Jazzar, 4000 Sousse, Tunisie
| | - S Moussa
- Laboratoire d'anatomie et de cytologie pathologiques, CHU Farhat Hached de Sousse, rue Ibn El Jazzar, 4000 Sousse, Tunisie; Faculté de médecine de Sousse, Université de Sousse, 4000 Sousse, Tunisie
| | - M Mokni
- Laboratoire d'anatomie et de cytologie pathologiques, CHU Farhat Hached de Sousse, rue Ibn El Jazzar, 4000 Sousse, Tunisie; Faculté de médecine de Sousse, Université de Sousse, 4000 Sousse, Tunisie
| | - M Ghorbel
- Service d'ophtalmologie, CHU Farhat Hached de Sousse, rue Ibn El Jazzar, 4000 Sousse, Tunisie; Faculté de médecine de Sousse, Université de Sousse, 4000 Sousse, Tunisie
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Moussa S, Kilgour M, Jans C, Hernandez-Garcia A, Cuperlovic-Culf M, Bengio Y, Simine L. Diversifying Design of Nucleic Acid Aptamers Using Unsupervised Machine Learning. J Phys Chem B 2023; 127:62-68. [PMID: 36574492 DOI: 10.1021/acs.jpcb.2c05660] [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] [Indexed: 12/28/2022]
Abstract
Inverse design of short single-stranded RNA and DNA sequences (aptamers) is the task of finding sequences that satisfy a set of desired criteria. Relevant criteria may be, for example, the presence of specific folding motifs, binding to molecular ligands, sensing properties, and so on. Most practical approaches to aptamer design identify a small set of promising candidate sequences using high-throughput experiments (e.g., SELEX) and then optimize performance by introducing only minor modifications to the empirically found candidates. Sequences that possess the desired properties but differ drastically in chemical composition will add diversity to the search space and facilitate the discovery of useful nucleic acid aptamers. Systematic diversification protocols are needed. Here we propose to use an unsupervised machine learning model known as the Potts model to discover new, useful sequences with controllable sequence diversity. We start by training a Potts model using the maximum entropy principle on a small set of empirically identified sequences unified by a common feature. To generate new candidate sequences with a controllable degree of diversity, we take advantage of the model's spectral feature: an "energy" bandgap separating sequences that are similar to the training set from those that are distinct. By controlling the Potts energy range that is sampled, we generate sequences that are distinct from the training set yet still likely to have the encoded features. To demonstrate performance, we apply our approach to design diverse pools of sequences with specified secondary structure motifs in 30-mer RNA and DNA aptamers.
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Affiliation(s)
- Siba Moussa
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, QuebecH3A 0B8, Canada
| | - Michael Kilgour
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, QuebecH3A 0B8, Canada
| | - Clara Jans
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, QuebecH3A 0B8, Canada
| | - Alex Hernandez-Garcia
- Montreal Institute for Learning Algorithms, 6666 St. Urbain, #200, Montreal, QuebecH2S 3H1, Canada
| | - Miroslava Cuperlovic-Culf
- Digital Technologies Research Centre, National Research Council of Canada, 1200 Montreal Road, Ottawa, OntarioK1A 0R6, Canada
| | - Yoshua Bengio
- Montreal Institute for Learning Algorithms, 6666 St. Urbain, #200, Montreal, QuebecH2S 3H1, Canada
| | - Lena Simine
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, QuebecH3A 0B8, Canada
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El Miedany Y, Abu-Zaid MH, Elgaafary M, Ali N, Mohasseb D, Zohiery A, Hassan W, Mortada MA, Eissa M, Tabra SAA, Fouad N, Gaballah N, El Noby F, Saber S, Moussa S. POS1288 TREAT TO TARGET MANAGEMENT OF FIBROMYALGIA: EVIDENCE-BASED CONSENSUS ON CLINICAL PRACTICE GUIDELINES. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.3463] [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
BackgroundBecause of the subjective character of symptoms, absence of a diagnostic test, modest response to treatments, and at times, patient reports of important functional disability, fibromyalgia remains a challenge for the treating health care professionals in the standard clinical practice.ObjectivesTo develop an up to date consensus, evidence-based clinical practice guidelines for treat to target management of fibromyalgia.Methods15 key clinical questions were identified by a scientific committee according to the Patient/ Population, Intervention, Comparison, and Outcomes (PICO) approach. A literature review team performed a systematic review to summarize evidence advocating the benefits and harms of available pharmacologic and nonpharmacologic therapies for fibromyalgia. Subsequently, recommendations were formulated. The level of evidence was determined for each section using the Oxford Centre for Evidence-based Medicine (CEBM) system. A 3-round Delphi process was conducted with 16 experts. All rounds were conducted online. A consensus was achieved on the direction and the strength of the recommendations.ResultsAn online questionnaire were sent to expert panel who participated in the three rounds (response rate 100%). At the end of round 3, a total of fifteen recommendation items, categorized into 10 sections to address the main fibromyalgia categories, were obtained. Agreement with the recommendations (rank 7-9) ranged from 85-100%. Consensus was reached (i.e.≥80%of respondents strongly agreed or agreed) on the wording of all the 15 clinical standards identified by the scientific committee. Algorithm for the management of fibromyalgia have been suggested.ConclusionThese recommendations provide an updated consensus on both the non-pharmacological as well as the pharmacological treatment of fibromyalgia. The provide strategies to reach optimal treat to target outcomes in common clinical scenarios, based on a combination of evidence and expert opinion. Best treatment decisions should be tailored to each individual patient situation.Disclosure of InterestsNone declared
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El Miedany Y, Abu-Zaid MH, Elgaafary M, Ali N, Mansour M, Fathi N, Hassan W, Mortada MA, Moussa S, Eissa M, Tabra SAA, Fouad N, Ali R, M Medhat B, Jamaleldeen J, Adel Abdelsalam Hussein Y, Ghaleb RM, Nourhan Elameen E, Dessouki E, Saber S. AB0908 Treating to target of psoriasis: An evidence-based consensus on clinical practice recommendations. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.3382] [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
BackgroundThe Tight Control of psoriatic arthritis (TICOPA) trial revealed a treat to target (T2T) strategy has led to improved clinical outcomes in psoriatic arthritis (PsA). The heterogeneity of the disease, the feasibility of therapy and the associated comorbidities made the implementation of such strategy in routine care a real challenge. There is a high need for establish real world recommendations for the T2T approach in PsA tailored to the disease activity status, the Psoriasis manifestations as well as the individual patient’s requirements.Objectivesto provide up-to-date, evidence-based and consensus-based recommendations for Treat-to-Target management of psoriatic arthritis (PsA) and its associated clinical manifestations.Methods14 key clinical questions were identified by scientific committee according to the Patient/ Population, Intervention, Comparison, Outcomes and Timing (PICOT) approach. Literature Review team performed a systematic review to summarize evidence advocating the benefits and harms of available pharmacologic and nonpharmacologic therapies for PsA. Subsequently, recommendations were formulated. The level of evidence was determined for each section using the Oxford Centre for Evidence-based Medicine (CEBM) system. A 3-round Delphi process was conducted with 19 experts. All rounds were conducted online. A consensus was achieved on the direction and the strength of the recommendations.ResultsAn online questionnaire were sent to expert panel who participated in the three rounds (response rate 100%). At the end of round 3, a total of fifty-one recommendation items, categorized into 6 sections to address the main 6 PsA categories, were obtained. Agreement with the recommendations (rank 7-9) ranged from 89.5-100%. Consensus was reached (i.e.≥75%of respondents strongly agreed or agreed) on the wording of all the 51 clinical standards identified by the scientific committee. Algorithms for the management of PsA have been suggested.ConclusionThese recommendations provide an updated consensus on the pharmacological treatment of PsA and strategies to reach optimal treat to target outcomes in in common clinical scenarios, based on a combination of evidence and expert opinion. Best treatment decisions should be tailored to each individual patient situation.Disclosure of InterestsNone declared
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El Miedany Y, Abu-Zaid MH, Elgaafary M, Ali N, Mansour M, Hassan W, Mortada MA, Eissa M, Tabra SAA, Fouad N, Ali R, M Medhat B, Adel Abdelsalam Hussein Y, Ghaleb RM, Nourhan Elameen E, Saber S, Moussa S. POS1168 TREAT TO TARGET OF GOUT: AN EVIDENCE-BASED CONSENSUS ON CLINICAL PRACTICE GUIDELINES. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.3477] [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
BackgroundNew therapies, management approaches and evidence regarding the management of gout have become available over the past years. This triggered the need for updated recommendations for the management of gout.Objectivesto develop an up-to-date consensus evidence-based clinical practice guideline for the management of gout including recommendations for management of acute gout flares, optimum usage of urate lowering therapy for chronic gout as well as patient education and lifestyle guidance.MethodsAn extensive systematic literature review was performed, and evidence-based recommendations were extrapolated, based on 16-key questions identified according to population, intervention, comparator, and outcomes (PICO) approach. For each item, the level of evidence was determined using the Oxford Centre for Evidence-based Medicine (CEBM) system. These were evaluated by a panel of 17-experts via online surveys over a 2-round Delphi process.ResultsAt the end of round 2, a total of 30-recommendation items, categorized into 10 domains to were obtained. Agreement with the recommendations (rank 7-9) ranged from 90-100%. Consensus was reached (i.e.≥75%of respondents strongly agreed or agreed) on the wording, the grade of recommendation and level of evidence of all the 30 clinical standards identified by the scientific committee. The guideline emphasized that all gouty patients should be screened for comorbidities. Based on this, an algorithm for treat to target management approach tailored to the individual patient’s needs and associated comorbidities has been outlined.ConclusionThis work provides updated evidence-based recommendations for the prevention and treatment of acute as well as chronic gouty arthritis. It provides an approach for physicians and patients making decisions on the management of gout. It will also facilitate improvement and uniformity of care.Disclosure of InterestsNone declared
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Baghal M, Agarwal KA, Rajkumar D, Santana MS, Patel UP, Magnan DM, Ibrahim MI, Habib MH, Alrestom R, Alabdallat MA, Moussa S, Shamoon F, Gabelman MG, Lo AL. Comparing novel oral anticoagulants to vitamin k antagonists in patients with hypertrophic cardiomyopathy and atrial fibrillation: an updated systematic review and meta-analysis. Eur J Prev Cardiol 2022. [DOI: 10.1093/eurjpc/zwac056.067] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Atrial fibrillation (AF) is a common occurrence in Hypertrophic cardiomyopathy (HCM), reported in approximately one third of cases. The 2011 ACC guidelines for management of HCM with concomitant AF recommend use of Vitamin K Antagonists (VKA); however, new research and randomized clinical trials present data which favor the use of Novel Oral Anticoagulants (NOAC) over VKA to prevent serious outcomes.
Purpose
We aim to identify the difference between NOAC and VKA in preventing ischemic stroke and thromboembolism, and calculate the rate of intracranial hemorrhage, major bleeding and all cause mortality in both treatment groups.
Methods
We conducted a systematic review and meta-analysis with the aim to answer the following clinical question: What is the efficacy of NOACs vs VKA in preventing thromboembolism and what are the associated risks with each group? We followed PRISMA guidelines. Scientific databases (PubMed, Cochrane Central Register of Controlled Trials, Cochrane Database of Systematic Reviews, Epistemonikos) were searched using relevant medical subject headings and keywords to retrieve studies published through September 24, 2020. Inclusion criteria were patients over 18 years old, use of NOACs and VKA in atrial fibrillation and HCM. Studies with patients who had catheter ablative therapy were excluded. After an exhaustive review, a total of 6 studies including 2 Randomized Control Trials (RCTs) and 4 retrospective cohort studies were analyzed using RevMan 5.4 to analyze event rate, hazard ratio and 95% confidence interval for ischemic stroke/thromboembolism, all-cause mortality, major bleeding and intracranial hemorrhage. One study was later excluded due to insufficient data. Heterogeneity was assessed by using the I2 statistic.
Results
A total of 9,168 patients [NOAC 5158 and VKA 4010] were pooled. Meta-analysis showed the NOAC treatment group had a significant improvement in preventing the primary outcome ischemic stroke/thromboembolism [HR 0.41; 95% CI 0.26 -0.63, p = <0.001], as well as secondary outcomes; all cause mortality [HR 0.37, 95% CI 0.19 - 0.73, p = 0.004, p = 0.004], Intracranial hemorrhage [HR 0.43; 95% CI, 0.11 - 1.65, p = 0.22], and Major Bleeding [HR 0.56; CI 95% 0.34 - 0.93, p = 0.02].
Conclusion
Anticoagulation of patients with HCM and AF using NOACs was associated with lower risk of ischemic stroke and thromboembolic events in the NOACs group. There was also a statistically significant reduction of all-cause mortality and major bleeding among patients with AF and HCM who had received NOACs as compared to VKA. There was a notable reduction of ICH in the NOACs group as well. Further clinical trials are needed to further assess the long term benefits of using NOACs in these patients.
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Affiliation(s)
- M Baghal
- Hackensack Meridian Health Palisades Medical Center, Internal Medicine, New Jersey, United States of America
| | - KA Agarwal
- Hackensack Meridian Health Palisades Medical Center, Internal Medicine, New Jersey, United States of America
| | - D Rajkumar
- St. Joseph's University Medical Center, Cardiology, New Jersey, United States of America
| | - MS Santana
- St. Joseph's University Medical Center, Cardiology, New Jersey, United States of America
| | - UP Patel
- Icahn School of Medicine at Mount Sinai, Public Health, New York, United States of America
| | - DM Magnan
- Hackensack University Medical Center, New Jersey, United States of America
| | - MI Ibrahim
- Hackensack Meridian Health Palisades Medical Center, Internal Medicine, New Jersey, United States of America
| | - MH Habib
- Hackensack Meridian Health Palisades Medical Center, Internal Medicine, New Jersey, United States of America
| | - R Alrestom
- Hackensack Meridian Health Palisades Medical Center, Internal Medicine, New Jersey, United States of America
| | - MA Alabdallat
- Mount Sinai Medical Center, New York, United States of America
| | - S Moussa
- St. Joseph's University Medical Center, Cardiology, New Jersey, United States of America
| | - F Shamoon
- St. Joseph's University Medical Center, Cardiology, New Jersey, United States of America
| | - MG Gabelman
- Hackensack Meridian Health Palisades Medical Center, Cardiology, New Jersey, United States of America
| | - AL Lo
- Hackensack Meridian Health Palisades Medical Center, Internal Medicine, New Jersey, United States of America
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Moussa S, Rosini E, Chitsaz D, Pollegioni L, Kennedy TE, Mauzeroll J. High-Throughput Strategy for Glycine Oxidase Biosensor Development Reveals Glycine Release from Cultured Cells. Anal Chem 2021; 93:16504-16511. [PMID: 34843206 DOI: 10.1021/acs.analchem.1c03620] [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] [Indexed: 11/29/2022]
Abstract
Glycine is an important biomarker in clinical analysis due to its involvement in multiple physiological processes. As such, the need for low-cost analytical tools for glycine detection is growing. As a neurotransmitter, glycine is involved in inhibitory and excitatory neurochemical transmission in the central nervous system. In this work, we present a 10 μM Pt-based electrochemical enzymatic biosensor based on the flavoenzyme glycine oxidase (GO) for localized real-time measurements of glycine. Among GO variants at position 244, the H244K variant with increased glycine turnover was selected to develop a functional biosensor. This biosensor relies on amperometric readouts and does not require additional redox mediators. The biosensor was characterized and applied for glycine detection from cells, mainly HEK 293 cells and primary rat astrocytes. We have identified an enzyme, GO H244K, with increased glycine turnover using mutagenesis but which can be developed into a functional biosensor. Noteworthy, a glycine release of 395.7 ± 123 μM from primary astrocytes was measured, which is ∼fivefold higher than glycine release from HEK 293 cells (75.4 ± 3.91 μM) using the GO H244K biosensor.
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Affiliation(s)
- Siba Moussa
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
| | - Elena Rosini
- Dipartimento di Biotecnologie e Scienze della Vita, Università degli studi deII'Insubria, via J. H. Dunant 3, Varese 21100, Italy
| | - Daryan Chitsaz
- Integrated Program in Neuroscience, McGill University, 1033 Pine Ave. W., Montreal, Quebec H3A 1A1, Canada
| | - Loredano Pollegioni
- Dipartimento di Biotecnologie e Scienze della Vita, Università degli studi deII'Insubria, via J. H. Dunant 3, Varese 21100, Italy
| | - Timothy E Kennedy
- McGill Program in Neuroengineering, Department of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, Montreal, Quebec H3A 2B4, Canada
| | - Janine Mauzeroll
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
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Moussa S, Murtas G, Pollegioni L, Mauzeroll J. Enhancing Electrochemical Biosensor Selectivity with Engineered d-Amino Acid Oxidase Enzymes for d-Serine and d-Alanine Quantification. ACS Appl Bio Mater 2021; 4:5598-5604. [PMID: 35006748 DOI: 10.1021/acsabm.1c00409] [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] [Indexed: 12/29/2022]
Abstract
d-Amino acid oxidase (DAAO) enzymes bind a range of d-amino acids with variable affinity. As such, the design of selective DAAO-based enzymatic biosensors remains a challenge for real-world biosensor application. Herein, a methodology for developing biosensors with varying substrate selectivity is presented. First, we address DAAO-based biosensor selectivity toward d-serine by introducing point mutations into DAAO using rational design. Next, the wild-type yeast DAAO (RgDAAO WT) and variants human DAAO W209R and yeast M213G are characterized for their selectivity and activity toward d-serine and d-alanine, the preferred DAAO substrates. The DAAO enzymes have been immobilized for final biosensor design, where they demonstrate selectivity comparable to free DAAO. The cross-linking procedure impacts on DAAO structure and function and the use of a regeneration strategy allows the biosensor response to be improved.
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Affiliation(s)
- Siba Moussa
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
| | - Giulia Murtas
- Dipartimento di Biotecnologie e Scienze della Vita, Università degli studi deII'Insubria, via J. H. Dunant 3, 21100 Varese, ltaly
| | - Loredano Pollegioni
- Dipartimento di Biotecnologie e Scienze della Vita, Università degli studi deII'Insubria, via J. H. Dunant 3, 21100 Varese, ltaly
| | - Janine Mauzeroll
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
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Moussa S, Chhin D, Pollegioni L, Mauzeroll J. Quantitative measurements of free and immobilized RgDAAO Michaelis-Menten constant using an electrochemical assay reveal the impact of covalent cross-linking on substrate specificity. Anal Bioanal Chem 2021; 413:6793-6802. [PMID: 33791826 DOI: 10.1007/s00216-021-03273-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 02/22/2021] [Accepted: 03/03/2021] [Indexed: 11/29/2022]
Abstract
Challenges facing enzyme-based electrochemical sensors include substrate specificity, batch to batch reproducibility, and lack of quantitative metrics related to the effect of enzyme immobilization. We present a quick, simple, and general approach for measuring the effect of immobilization and cross-linking on enzyme activity and substrate specificity. The method can be generalized for electrochemical biosensors using an enzyme that releases hydrogen peroxide during its catalytic cycle. Using as proof of concept RgDAAO-based electrochemical biosensors, we found that the Michaelis-Menten constant (Km) decreases post immobilization, hinting at alterations in the enzyme kinetic properties and thus substrate specificity. We confirm the decrease in Km electrochemically by characterizing the substrate specificity of the immobilized RgDAAO using chronoamperometry. Our results demonstrate that enzyme immobilization affects enzyme substrate specificity and this must be carefully evaluated during biosensor development.
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Affiliation(s)
- Siba Moussa
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec, H3A 0B8, Canada
| | - Danny Chhin
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec, H3A 0B8, Canada
| | - Loredano Pollegioni
- Dipartimento di Biotecnologie e Scienze della Vita, Università degli studi deII'Insubria, via J. H. Dunant 3, 21100, Varese, Italy
| | - Janine Mauzeroll
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec, H3A 0B8, Canada.
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Diallo Mbaye K, Lakhe N, Fortes L, Cissé Diallo V, Ka D, Massaly A, Fall N, Ndour C, Moussa S. Aspects épidémiologiques, cliniques, paracliniques, thérapeutiques et évolutifs de la maladie thromboembolique veineuse au cours de l’infection à VIH. Med Mal Infect 2020. [DOI: 10.1016/j.medmal.2020.06.395] [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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Barbier T, Zúñiga-Ripa A, Moussa S, Plovier H, Sternon JF, Lázaro-Antón L, Conde-Álvarez R, De Bolle X, Iriarte M, Moriyón I, Letesson JJ. Brucella central carbon metabolism: an update. Crit Rev Microbiol 2017; 44:182-211. [PMID: 28604247 DOI: 10.1080/1040841x.2017.1332002] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The brucellae are facultative intracellular pathogens causing brucellosis, an important zoonosis. Here, we review the nutritional, genetic, proteomic and transcriptomic studies on Brucella carbon uptake and central metabolism, information that is needed for a better understanding of Brucella virulence. There is no uniform picture across species but the studies suggest primary and/or secondary transporters for unknown carbohydrates, lactate, glycerol phosphate, erythritol, xylose, ribose, glucose and glucose/galactose, and routes for their incorporation to central metabolism, including an erythritol pathway feeding the pentose phosphate cycle. Significantly, all brucellae lack phosphoenolpyruvate synthase and phosphofructokinase genes, which confirms previous evidence on glycolysis absence, but carry all Entner-Doudoroff (ED) pathway and Krebs cycle (and glyoxylate pathway) genes. However, glucose catabolism proceeds through the pentose phosphate cycle in the classical species, and the ED pathway operates in some rodent-associated brucellae, suggesting an ancestral character for this pathway in this group. Gluconeogenesis is functional but does not rely exclusively on classical fructose bisphosphatases. Evidence obtained using infection models is fragmentary but suggests the combined or sequential use of hexoses/pentoses, amino acids and gluconeogenic substrates. We also discuss the role of the phosphotransferase system, stringent reponse, quorum sensing, BvrR/S and sRNAs in metabolism control, an essential aspect of the life style of facultative intracellular parasites.
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Affiliation(s)
- T Barbier
- a Unité de Recherche en Biologie des Microorganismes , Laboratoire d'Immunologie et de Microbiologie, NARILIS, Université de Namur , Namur , Belgium
| | - A Zúñiga-Ripa
- b Instituto de Salud Tropical (ISTUN), Instituto de Investigación Sanitaria de Navarra (IdISNA) and Depto. Microbiología y Parasitología , Universidad de Navarra, Edificio de Investigación , Pamplona , Spain
| | - S Moussa
- a Unité de Recherche en Biologie des Microorganismes , Laboratoire d'Immunologie et de Microbiologie, NARILIS, Université de Namur , Namur , Belgium
| | - H Plovier
- a Unité de Recherche en Biologie des Microorganismes , Laboratoire d'Immunologie et de Microbiologie, NARILIS, Université de Namur , Namur , Belgium
| | - J F Sternon
- a Unité de Recherche en Biologie des Microorganismes , Laboratoire d'Immunologie et de Microbiologie, NARILIS, Université de Namur , Namur , Belgium
| | - L Lázaro-Antón
- b Instituto de Salud Tropical (ISTUN), Instituto de Investigación Sanitaria de Navarra (IdISNA) and Depto. Microbiología y Parasitología , Universidad de Navarra, Edificio de Investigación , Pamplona , Spain
| | - R Conde-Álvarez
- b Instituto de Salud Tropical (ISTUN), Instituto de Investigación Sanitaria de Navarra (IdISNA) and Depto. Microbiología y Parasitología , Universidad de Navarra, Edificio de Investigación , Pamplona , Spain
| | - X De Bolle
- a Unité de Recherche en Biologie des Microorganismes , Laboratoire d'Immunologie et de Microbiologie, NARILIS, Université de Namur , Namur , Belgium
| | - M Iriarte
- b Instituto de Salud Tropical (ISTUN), Instituto de Investigación Sanitaria de Navarra (IdISNA) and Depto. Microbiología y Parasitología , Universidad de Navarra, Edificio de Investigación , Pamplona , Spain
| | - I Moriyón
- b Instituto de Salud Tropical (ISTUN), Instituto de Investigación Sanitaria de Navarra (IdISNA) and Depto. Microbiología y Parasitología , Universidad de Navarra, Edificio de Investigación , Pamplona , Spain
| | - J J Letesson
- b Instituto de Salud Tropical (ISTUN), Instituto de Investigación Sanitaria de Navarra (IdISNA) and Depto. Microbiología y Parasitología , Universidad de Navarra, Edificio de Investigación , Pamplona , Spain
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S. EB, Emam A, Moussa S, Al-Ghanam H, Darbin S. Interpretation of Susceptibility Phenomenon of Four Tomato Cultivars to Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae). Egyptian Academic Journal of Biological Sciences A, Entomology 2017. [DOI: 10.21608/eajbsa.2017.12529] [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: 10/28/2022] Open
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13
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M. EG, Fadl A, Moussa S. Implications of Some Constant Temperatures on Certain Biological Aspects of the Grapevine Aphid, Aphis illinoisensis Shimer (Homoptera:Aphididae). Egyptian Academic Journal of Biological Sciences A, Entomology 2016. [DOI: 10.21608/eajbsa.2016.12852] [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: 10/28/2022] Open
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14
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Amen O, Vemula SV, Zhao J, Ibrahim R, Hussein A, Hewlett IK, Moussa S, Mittal SK. Identification and characterization of a highly pathogenic H5N1 avian influenza A virus during an outbreak in vaccinated chickens in Egypt. Virus Res 2015; 210:337-43. [PMID: 26363196 DOI: 10.1016/j.virusres.2015.09.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 08/07/2015] [Accepted: 09/04/2015] [Indexed: 11/19/2022]
Abstract
Highly pathogenic avian influenza A (HPAI) H5N1 viruses continue to be a major veterinary and public health problem in Egypt. Continued surveillance of these viruses is necessary to devise strategies to control the spread of the virus and to monitor its evolutionary patterns. This is a report of the identification of a variant strain of HPAI H5N1 virus during an outbreak in 2010 in vaccinated chicken flocks in a poultry farm in Assiut, Egypt. Vaccination of chickens with an oil-emulsified inactivated A/chicken/Mexico/232/94 (H5N2) vaccine induced high levels of hemagglutination inhibition (HI) antibody titers reaching up to 9 log2. However, all flocks irrespective of the number of vaccine doses and the resultant HI titer levels came down with severe influenza infections. The qRT-PCR and rapid antigen test confirmed the influenza virus to be from H5N1 subtype. Sequencing of the hemagglutinin (HA) gene fragment from ten independent samples demonstrated that a single H5N1 strain was involved. This strain belonged to clade 2.2.1 and had several mutations in the receptor-binding site of the HA protein, thereby producing a variant strain of HPAI H5N1 virus which was antigenically different from the parent clade 2.2.1 virus circulating in Egypt at that time. In order to define the variability in HPAI H5N1 viruses over time in Egypt, we sequenced another H5N1 virus that was causing infections in chickens in 2014. Phylogenetic analysis revealed that both viruses had further distanced from the parent virus circulating during 2010. This study highlights that the antigenic mutations in HPAI H5N1 viruses represent a definitive challenge for the development of an effective vaccine for poultry. Overall, the results emphasize the need for continued surveillance of H5N1 outbreaks and extensive characterization of virus isolates from vaccinated and non-vaccinated poultry populations to better understand genetic changes and their implications.
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Affiliation(s)
- O Amen
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN 47907, USA; Poultry Diseases Department, Faculty of Veterinary Medicine, Assiut University, Assiut 71526, Egypt
| | - S V Vemula
- Laboratory of Molecular Virology, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, MD 20993, USA
| | - J Zhao
- Laboratory of Molecular Virology, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, MD 20993, USA
| | - R Ibrahim
- Poultry Diseases Department, Faculty of Veterinary Medicine, Assiut University, Assiut 71526, Egypt
| | - A Hussein
- Department of Animal Hygiene, Faculty of Veterinary Medicine, Assiut University, Assiut 71526, Egypt
| | - I K Hewlett
- Laboratory of Molecular Virology, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, MD 20993, USA
| | - S Moussa
- Poultry Diseases Department, Faculty of Veterinary Medicine, Assiut University, Assiut 71526, Egypt
| | - S K Mittal
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN 47907, USA.
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Ghannam M, Abdelhalim M, Moussa S, AL-Mohy Y, Al-Ayed M. Ultraviolet-visible and fluorescence spectroscopy techniques are important diagnostic tools during the progression of atherosclerosis: Diet zinc supplementation retarded or delayed atherosclerosis. Atherosclerosis 2015. [DOI: 10.1016/j.atherosclerosis.2015.04.422] [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: 11/26/2022]
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16
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Abdelhalim M, Moussa S, AL-Mohy Y. Heavy and trace elements are important diagnostic tools during the progression of atherosclerosis; the supplementation of high zinc level delays the progression of atherosclerosis. Atherosclerosis 2015. [DOI: 10.1016/j.atherosclerosis.2015.04.1048] [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: 11/15/2022]
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17
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Abstract
By 2020, it is estimated that 2.1 billion people will be presbyopic, and the demand for spectacle independence in this group is growing. This review article provides an overview of the three commercially available corneal inlays for the correction of presbyopia. Safety, efficacy, visual outcomes, and complications are analyzed for all three inlays according to published peer-reviewed data.
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Affiliation(s)
- EM Arlt
- Department of Ophthalmology, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - EM Krall
- Department of Ophthalmology, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - S Moussa
- Department of Ophthalmology, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - G Grabner
- Department of Ophthalmology, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - AK Dexl
- Department of Ophthalmology, Paracelsus Medical University Salzburg, Salzburg, Austria
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18
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Schmidt I, Langenbucher A, Moussa S, Schirra F, Seitz B, Eppig T. [Retroiridal implantation of a Verisyse™ iris claw lens: refractive outcome and individualized intraocular lens constants]. Ophthalmologe 2014; 112:261-5. [PMID: 25149654 DOI: 10.1007/s00347-014-3121-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Evaluation of refractive predictability with retroiridal implantation of a Verisyse(TM) iris-claw lens (AMO) and optimization of the IOL-constants recommended by the manufacturer. PATIENTS AND METHODS A retrospective study after retroiridal iris-claw lens implantation in the years 2007-2012 including 52 eyes of 50 patients with a lack of capsular support was carried out. Follow-up data was recorded on average 5 weeks after surgery. Demographic data, indications, accompanying diseases, biometrical data and refractive outcome were analysed and an individualization of the intraocular lens constants for the SRK/T-, Holladay-1, Hoffer-Q and Haigis-formula was carried out. RESULT Indications for retroiridal implantation of a Verisyse(TM) lens were IOL luxation (32.7 %), complicated primary cataract surgery (25.0 %), secondary IOL Implantation (19.2 %), lens exchange (19.2 %) and luxation of the crystalline lens (3.8 %). Accompanying diseases were pancreatic diabetes (21.2 %), rheumatic diseases (7.7 %), homocystinuria (1.9 %), pseudoexfoliation of lens capsule (23.1 %), traumata (23.1 %), secondary glaucoma (23.1 %), proliferative diabetic retinopathy (9.6 %) and age related macular degeneration (5.8 %). Optimized IOL constants were an A-constant of 116.8 for the SRK/T formula, a surgeon factor (Holladay1) of 0.8, a pACD (HofferQ) of 4,4 and an a0 constant of 0,49 for the Haigis formula. Postoperative deviation of target refraction was within ± 2 D in 84.6 % of the eyes. CONCLUSION The retroiridal Verisyse(TM) intraocular lens shows a broad spectrum of indications and achieves a good visual outcome. The previously published IOL constants show optimization potential due to the small number of cases.
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Affiliation(s)
- I Schmidt
- Institut für Experimentelle Ophthalmologie, Universität des Saarlandes, Kirrberger Str. 100, 66424, Homburg/Saar, Deutschland,
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Fathy H, Nasreldin M, Abdel Latif A, Besheer M, Moussa S, El Sheikh A. EPA-0507 - A randomized comparative study between the short term outcome of electroconvulsive therapy versus repetitive transcranial magnetic stimulation in the treatment of a group of patients with depression. Eur Psychiatry 2014. [DOI: 10.1016/s0924-9338(14)77910-6] [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: 11/27/2022] Open
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Pattmoeller J, Moussa S, Hoffmann S, Seitz B. Unklarer altitudinaler Gesichtsfeldausfall. Ophthalmologe 2012; 109:600-2. [DOI: 10.1007/s00347-012-2552-9] [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: 11/24/2022]
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21
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El-Metwally M, Moussa S, Ghanim N. Studies on the population fluctuations and distribution of the white mango scale insect, Aulacaspis tubercularis Newstead within the canopy of the mango trees in eastern of Delta region at the north of Egypt. Egyptian Academic Journal of Biological Sciences A, Entomology 2011. [DOI: 10.21608/eajbsa.2011.15177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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22
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Abd Allah R, Hamed MNG, Moussa S, Shehab-Eldin EH. ADAPTIVE BUSBAR DIFFERENTIAL PROTECTION BASED ON CURRENT TRANSFORMER SATURATION DEGREES. ERJ Engineering Research Journal 2010; 33:227-232. [DOI: 10.21608/erjm.2010.67323] [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: 09/02/2023]
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23
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Moussa S, Yafi F, El-Hakim A, Fahmy N, Aprikian A, Tanguay S, Anidjar M, Kassouf W. Outcome of Surgical Treatment of Patients with Upper versus Lower Urinary Tract Urothelial Carcinoma: Stage-by-Stage Comparison. Urol Int 2010; 84:50-5. [DOI: 10.1159/000273466] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2009] [Accepted: 05/12/2009] [Indexed: 11/19/2022]
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24
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Tounkara K, Aboubacar B, Koita O, Traore A, Dao S, Moussa S, Ibrahima D, Fanta S, Bougoudogo F, Gerber R, De Groot AS. P15-07. Knowledge, attitudes, practices and willingness to participate in HIV vaccine trials among urban residents of Bamako, Mali, in West Africa, 2005–2009. Retrovirology 2009. [PMCID: PMC2767702 DOI: 10.1186/1742-4690-6-s3-p208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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25
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Abdel-Hady ES, El-Shamy M, El-Rifai AA, Goda H, Abdel-Samad A, Moussa S. Maternal and perinatal outcome of pregnancies complicated by cardiac disease. Int J Gynaecol Obstet 2005; 90:21-5. [PMID: 15913623 DOI: 10.1016/j.ijgo.2005.03.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [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: 01/01/2005] [Accepted: 03/09/2005] [Indexed: 10/25/2022]
Abstract
OBJECTIVE The aim of this study was to assess the maternal and perinatal outcome of pregnancies complicated by cardiac disease in a tertiary care center in Egypt. METHODS During a 1-year period, a total of 86 pregnant women with cardiac disease were admitted. Maternal and perinatal morbidity and mortality were calculated and compared with a control group. RESULTS Seventy-seven (89.5%) patients were due to rheumatic affection, and 60 patients were classified as NYHA classes I-II. There was one case of maternal mortality (1.16%), and 10 other cases developed life-threatening complications. Two perinatal mortalities (2.32%) occurred in this series. Birth weight of babies born to mothers with functional classes III and IV were significantly lower than those of functional classes I-II and control group. CONCLUSION Rheumatic heart disease with pregnancy is still predominant in Egypt. Maternal and perinatal morbidity and mortality are strongly correlated to maternal cardiac functional classification.
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Affiliation(s)
- E-S Abdel-Hady
- Department of Obstetrics and Gynecology, Mansoura University Teaching Hospital, Mansoura, Egypt.
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Moussa S. [In praise of diversity: anthropology and aesthetics in Gautier's Mediterranean travels]. Romantisme 2001; 31:51-60. [PMID: 18623915] [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: 05/26/2023]
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Moussa S, Moore M. Monte carlo estimates of the distributions of the poisson voronoi tessellation. J STAT COMPUT SIM 1999. [DOI: 10.1080/00949659908811980] [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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Abstract
Ivermectin (Mectizan MK-933) is an efficient microfilaricidal drug used for mass treatment by the Onchocerciasis Control Programme (OCP) in the savanna zones of West Africa. Some populations of the forest zone of Côte d'Ivoire have very high microfilarial loads, so it was decided to treat some of these populations with ivermectin, in order to avoid an eventual reinfestation of the protected savanna areas. A pilot campaign was carried out in a small stream catchment area where onchocerciasis transmission is usually high. The whole population was treated orally with ivermectin (200 micrograms/kg of body weight), with the exception of children under 5 years of age, pregnant women and people who were ill. The results showed a very high efficiency of ivermectin in the treatment of onchocerciasis in the forest zone. The prevalence rate of microfilaria dropped from 60.1 to 33.2%. The community microfilarial load was reduced from 29.7 to 5.6 microfilariae per skin snip. To maintain this effect, the authors recommend regular treatment of all new comers into the area.
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Ghosh S, Moussa S, Palmer KR. Extracorporeal shock wave lithotripsy for bile duct stones using a piezoelectric lithotriptor: the Scottish lithotriptor centre experience. J R Coll Surg Edinb 1996; 41:35-39. [PMID: 8930040] [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: 05/22/2023]
Abstract
There is less published data on the use of piezoelectric lithotripsy in the management of bile duct stones than on electrohydraulic or electromagnetic lithotripsy. We report our experience in treating 20 patients with large bile duct stones (median size 20 mm; range 15-30 mm) which could not be extracted endoscopically. Stone fragmentation was achieved in 75% of the patients and the bile duct was cleared in 65% of the patients. There were no procedure related complications and no 30-day mortality. None of the patients required any sedation or analgesia and all the sessions were well-tolerated. We conclude that piezoelectric lithotripsy is a safe and moderately effective option for difficult bile duct stones. It has the advantage that it is well-tolerated without the need for sedation or analgesia.
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Affiliation(s)
- S Ghosh
- Gastrointestinal Unit, Western General Hospital, Edinburgh
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Turmel Y, Moussa S, Blanchard H. Management of major hepatic resection in infants and children. Report of sixteen cases. Can Anaesth Soc J 1973; 20:419-30. [PMID: 4718352 DOI: 10.1007/bf03026207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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