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Daoud S, Taha M. Protein characteristics substantially influence the propensity of activity cliffs among kinase inhibitors. Sci Rep 2024; 14:9058. [PMID: 38643174 PMCID: PMC11032345 DOI: 10.1038/s41598-024-59501-w] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Accepted: 04/11/2024] [Indexed: 04/22/2024] Open
Abstract
Activity cliffs (ACs) are pairs of structurally similar molecules with significantly different affinities for a biotarget, posing a challenge in computer-assisted drug discovery. This study focuses on protein kinases, significant therapeutic targets, with some exhibiting ACs while others do not despite numerous inhibitors. The hypothesis that the presence of ACs is dependent on the target protein and its complete structural context is explored. Machine learning models were developed to link protein properties to ACs, revealing specific tripeptide sequences and overall protein properties as critical factors in ACs occurrence. The study highlights the importance of considering the entire protein matrix rather than just the binding site in understanding ACs. This research provides valuable insights for drug discovery and design, paving the way for addressing ACs-related challenges in modern computational approaches.
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Affiliation(s)
- Safa Daoud
- Department of Pharmaceutical Chemistry and Pharmacognosy, Faculty of Pharmacy, Applied Sciences Private University, Amman, Jordan.
| | - Mutasem Taha
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Jordan, Amman, Jordan.
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2
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Banat R, Daoud S, Taha MO. Ligand-based pharmacophore modeling and machine learning for the discovery of potent aurora A kinase inhibitory leads of novel chemotypes. Mol Divers 2024:10.1007/s11030-024-10814-y. [PMID: 38446372 DOI: 10.1007/s11030-024-10814-y] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 01/19/2024] [Indexed: 03/07/2024]
Abstract
Aurora-A (AURKA) is serine/threonine protein kinase involved in the regulation of numerous processes of cell division. Numerous studies have demonstrated strong association between AURKA and cancer. AURKA is overexpressed in many cancers, such as colon, breast and prostate cancers. Consequently, AURKA has emerged as promising target for therapeutic intervention in cancer management. Herein, we describe a computational workflow for the discovery of novel anti-AURKA inhibitory leads starting with ligand-based assessment of the pharmacophoric space of six diverse sets of inhibitors. Subsequently, machine learning/QSAR modeling was coupled with genetic function algorithm to search for the best possible combination of machine learner, ligand-based pharmacophore(s) and molecular descriptors capable of explaining variation in anti-AURKA bioactivities within a collected list of inhibitors. Two learners succeeded in achieving acceptable structure/activity correlations, namely, random forests and extreme gradient boosting (XGBoost). Three pharmacophores emerged in the successful ML models. These were then used as 3D search queries to mine the National Cancer Institute database for novel anti-AURKA leads. Top-ranking 38 hits were assessed in vitro for their anti-AURKA bioactivities. Among them, three compounds exhibited promising dose-response curves, demonstrating experimental IC50 values ranging from sub-micromolar to low micromolar values. Remarkably, two of these compounds are of novel chemotypes.
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Affiliation(s)
- Rajaa Banat
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Jordan, Amman, Jordan
| | - Safa Daoud
- Department of Pharmaceutical Chemistry and Pharmacognosy, Faculty of Pharmacy, Applied Sciences Private University, Amman, Jordan
| | - Mutasem Omar Taha
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Jordan, Amman, Jordan.
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Taha M, Al-Imam AM, Daoud S, Hatmal MM. Augmenting Bioactivity by Docking-Generated Multiple Ligand Poses To Enhance Machine Learning and Pharmacophore Modelling: Discovery of New TTK Inhibitors as Case Study. Mol Inform 2023. [PMID: 37222400 DOI: 10.1002/minf.202300022] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 05/01/2023] [Indexed: 05/25/2023]
Abstract
Dual specificity protein kinase threonine/Tyrosine kinase (TTK) is one of the mitotic kinases. High levels of TTK are detected in several types of cancer. Hence, TTK inhibition is considered a promising therapeutic anti-cancer strategy. In this work, we used multiple docked poses of TTK inhibitors to augment training data for machine learning QSAR modeling. Ligand-Receptor Contacts Fingerprints and docking scoring values were used as descriptor variables. Escalating docking-scoring consensus levels were scanned against orthogonal machine learners, and the best learners (Random Forests and XGBoost) were coupled with genetic algorithm and Shapley additive explanations (SHAP) to determine critical descriptors for predicting anti-TTK bioactivity and for pharmacophore generation. Three successful pharmacophores were deduced and subsequently used for in silico screening against the NCI database. A total of 14 hits were evaluated in vitro for their anti-TTK bioactivities. One hit of novel chemotype showed reasonable dose-response curve with experimental IC 50 of 1.0 µM. The presented work indicates the validity of data augmentation using multiple docked poses for building successful machine learning models and pharmacophore hypotheses.
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Affiliation(s)
- Mutasem Taha
- Faculty of pharmacy,University of jordan, JORDAN
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Daoud S, Abutayeh R, Alabed SJ, Taha MO. Asenapine as a Potential Lead Inhibitor against Central Ca2+/Calmodulin-Dependent Protein Kinase II: Investigation by Docking Simulation and Experimental Validation. TOMCJ 2023. [DOI: 10.2174/18741045-v17-e230217-2022-14] [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] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Aim
The aim of this study is to investigated the potential inhibitory activity of asenapine against central nervous system CaMKII isozymes as a potential repurposing study using docking experiments and enzymatic assay.
Background
The Ca2+/calmodulin-dependent protein kinase II (CaMKII) is a multifunctional protein kinase ubiquitously expressed throughout the brain. Emerging biological data have indicated that inhibiting central nervous system CaMKII isoforms, namely, CaMKIIα and CaMKIIβ, may be a promising therapeutic strategy for the potential treatment of many neurological diseases including schizophrenia, depression, epilepsy, and learning deficit.
Objective
1- Study the possible attractive interactions of asenapine within the binding sites of the central CaMKII isozymes.
2- Evaluate the inhibitory activities of asenapine against central CaMKII isozymes.
Method
Docking experiments of asenapine and other known CaMKII inhibitors were performed. Docking settings were validated using ROC analysis. After that, the inhibitory activities of asenapine against central CaMKII alpha and beta were evaluated by enzymatic assay.
Result
Docking and scoring experiments of asenapine showed several binding interactions anchoring asenapine within CaMKIIα and CaMKIIβ catalytic sites while enzymatic assay results revealed that asenapine can inhibit CaMKIIα and CaMKIIβ in the micromolar range.
Conclusion
Our study provides evidence that asenapine can serve as a promising lead for the development of new CaMKIIα and CaMKIIβ inhibitors. Moreover, this study reinforces how the investment in drug repurposing could boost the drug discovery process.
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Abudayah A, Daoud S, Al-Sha'er M, Taha M. Pharmacophore Modeling of Targets Infested with Activity Cliffs via Molecular Dynamics Simulation Coupled with QSAR and Comparison with other Pharmacophore Generation Methods: KDR as Case Study. Mol Inform 2022; 41:e2200049. [PMID: 35973966 DOI: 10.1002/minf.202200049] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Accepted: 08/15/2022] [Indexed: 11/07/2022]
Abstract
Activity cliffs (ACs) are defined as pairs of structurally similar compounds with large difference in their potencies against certain biotarget. We recently proposed that potent AC members induce significant entropically-driven conformational modifications of the target that unveil additional binding interactions, while their weakly-potent counterparts are enthalpically-driven binders with little influence on the protein target. We herein propose to extract pharmacophores for ACs-infested target(s) from molecular dynamics (MD) frames of purely "enthalpic" potent binder(s) complexed within the particular target. Genetic function algorithm/machine learning (GFA/ML) can then be employed to search for the best possible combination of MD pharmacophore(s) capable of explaining bioactivity variations within a list of inhibitors. We compared the performance of this approach with established ligand-based and structure-based methods. Kinase inserts domain receptor (KDR) was used as a case study. KDR plays a crucial role in angiogenic signaling and its inhibitors have been approved in cancer treatment. Interestingly, GFA/ML selected, MD-based, pharmacophores were of comparable performances to ligand-based and structure-based pharmacophores. The resulting pharmacophores and QSAR models were used to capture hits from the national cancer institute list of compounds. The most active hit showed anti-KDR IC50 of 2.76 µM.
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Affiliation(s)
| | | | | | - Mutasem Taha
- Faculty of pharmacy,University of jordan, JORDAN
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Talib WH, Daoud S, Mahmod AI, Hamed RA, Awajan D, Abuarab SF, Odeh LH, Khater S, Al Kury LT. Plants as a Source of Anticancer Agents: From Bench to Bedside. Molecules 2022; 27:molecules27154818. [PMID: 35956766 PMCID: PMC9369847 DOI: 10.3390/molecules27154818] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 07/18/2022] [Accepted: 07/21/2022] [Indexed: 12/03/2022] Open
Abstract
Cancer is the second leading cause of death after cardiovascular diseases. Conventional anticancer therapies are associated with lack of selectivity and serious side effects. Cancer hallmarks are biological capabilities acquired by cancer cells during neoplastic transformation. Targeting multiple cancer hallmarks is a promising strategy to treat cancer. The diversity in chemical structure and the relatively low toxicity make plant-derived natural products a promising source for the development of new and more effective anticancer therapies that have the capacity to target multiple hallmarks in cancer. In this review, we discussed the anticancer activities of ten natural products extracted from plants. The majority of these products inhibit cancer by targeting multiple cancer hallmarks, and many of these chemicals have reached clinical applications. Studies discussed in this review provide a solid ground for researchers and physicians to design more effective combination anticancer therapies using plant-derived natural products.
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Affiliation(s)
- Wamidh H. Talib
- Department of Clinical Pharmacy and Therapeutic, Applied Science Private University, Amman 11931, Jordan; (A.I.M.); (R.A.H.); (D.A.); (S.F.A.); (L.H.O.); (S.K.)
- Correspondence:
| | - Safa Daoud
- Department Pharmaceutical Chemistry and Pharmacognosy, Faculty of Pharmacy, Applied Science Private University, Amman 11931, Jordan;
| | - Asma Ismail Mahmod
- Department of Clinical Pharmacy and Therapeutic, Applied Science Private University, Amman 11931, Jordan; (A.I.M.); (R.A.H.); (D.A.); (S.F.A.); (L.H.O.); (S.K.)
| | - Reem Ali Hamed
- Department of Clinical Pharmacy and Therapeutic, Applied Science Private University, Amman 11931, Jordan; (A.I.M.); (R.A.H.); (D.A.); (S.F.A.); (L.H.O.); (S.K.)
| | - Dima Awajan
- Department of Clinical Pharmacy and Therapeutic, Applied Science Private University, Amman 11931, Jordan; (A.I.M.); (R.A.H.); (D.A.); (S.F.A.); (L.H.O.); (S.K.)
| | - Sara Feras Abuarab
- Department of Clinical Pharmacy and Therapeutic, Applied Science Private University, Amman 11931, Jordan; (A.I.M.); (R.A.H.); (D.A.); (S.F.A.); (L.H.O.); (S.K.)
| | - Lena Hisham Odeh
- Department of Clinical Pharmacy and Therapeutic, Applied Science Private University, Amman 11931, Jordan; (A.I.M.); (R.A.H.); (D.A.); (S.F.A.); (L.H.O.); (S.K.)
| | - Samar Khater
- Department of Clinical Pharmacy and Therapeutic, Applied Science Private University, Amman 11931, Jordan; (A.I.M.); (R.A.H.); (D.A.); (S.F.A.); (L.H.O.); (S.K.)
| | - Lina T. Al Kury
- Department of Health Sciences, College of Natural and Health Sciences, Zayed University, Abu Dhabi 144534, United Arab Emirates;
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Alsayed AR, Talib W, Al-Dulaimi A, Daoud S, Maqbali MA. The first detection of Pneumocystis jirovecii in asthmatic patients post COVID-19 in Jordan. Bosn J Basic Med Sci 2022; 22:784-790. [PMID: 35603769 PMCID: PMC9519162 DOI: 10.17305/bjbms.2022.7335] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 04/26/2022] [Indexed: 11/16/2022] Open
Abstract
Pneumocystis jirovecii pneumonia (PCP), caused by fungal species named P. jirovecii, is a frequent opportunistic infection in those with human immunodeficiency virus infection. However, PCP has been documented in immunocompetent patients. This study aims to determine if P. jirovecii detection occurs in asthma patients following coronavirus disease 2019 (COVID-19) in a Jordanian cohort. Another aim was to evaluate a method of TaqMan quantitative polymerase chain reaction (qPCR) assay to detect P. jirovecii, from sputum samples. The nasopharyngeal swabs were used to detect SARS-CoV-2 and sputum samples were tested for P. jirovecii using real-time qPCR assay. Beta-tubulin (BT) and dihydrofolate reductase (DHFR) genes were the directed targets of P. jirovecii. The results showed that the mean qPCR efficiencies of BT and DHFR were 96.37% and 100.13%, respectively. Three out of 31 included patients (9.7%) had a positive P. jirovecii. All of the three patients had used oral corticosteroids (OCS) in the past 2 months due asthma exacerbation and were treated with OCS for COVID-19. This is the first study based in Jordan to demonstrate that P. jirovecii and COVID-19 can coexist and that it is important to maintain a broad differential diagnosis, especially in immunocompromised patients. Chronic lung disease can be a risk factor for the P. jirovecii colonization possibly due to corticosteroid’s immunosuppression.
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Affiliation(s)
- Ahmad R. Alsayed
- Department of Clinical Pharmacy and Therapeutics, Faculty of Pharmacy, Applied Science Private University, Amman, Jordan
- Corresponding author: Ahmad R. Alsayed, Department of Clinical Pharmacy and Therapeutics, Faculty of Pharmacy, Applied Science Private University, Amman, Jordan. E-mail: ;
| | - Wamidh Talib
- Department of Clinical Pharmacy and Therapeutics, Faculty of Pharmacy, Applied Science Private University, Amman, Jordan
| | - Abdullah Al-Dulaimi
- Department of Clinical Pharmacy and Therapeutics, Faculty of Pharmacy, Applied Science Private University, Amman, Jordan
| | - Safa Daoud
- Department of Pharmaceutical Chemistry and Pharmacognosy, Faculty of Pharmacy, Applied Science Private University, Amman, Jordan
| | - Mohammed Al Maqbali
- Department of Nursing Midwifery and Health, Northumbria University, Newcastle-Upon-Tyne, UK
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8
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Thiab S, Barakat M, Qudah R, Basheti I, Daoud S. Assessing health-related behaviors among Jordanian children during COVID-19 pandemic: A cross-sectional study. Pharm Pract (Granada) 2022; 20:2670. [PMID: 35919808 PMCID: PMC9296077 DOI: 10.18549/pharmpract.2022.2.2670] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 06/06/2022] [Indexed: 12/02/2022] Open
Abstract
Background: The coronavirus disease identified in 2019 (COVID-19) led to extreme actions being taken by the governments to restrict the spread of this virus. Closure of schools, sport clubs and playgrounds were among these actions; children had to stay indoors and were not allowed to pursue their normal lifestyle activities. Objectives: To assess the differences in health-related behaviors among Jordanian school-aged children (6-16 years) before and during COVID-19 quarantine and to evaluate public’s perception of the role of pharmacists regarding children’s health-related behaviors management. Methods: A cross-sectional study was conducted from August 2020 to January 2021 using an anonymous web-based survey. The survey was developed based on previously published surveys. Evaluation of the validity and reliability of the survey were conducted by a professional committee of clinical pharmacists and a statistician. Results: A total of 230 children, aged 9.02± 2.977 participated in the study. Physical activity and healthy balanced meals decreased (less than 1 hr or 1-3 hrs/week vs 2 meals/day, p= <0.001), whereas daily screen time (1-3 hrs/week vs 4-6 hrs/week, p= <0.001), sleep hours (8-9 hrs/day vs 10-11 hrs/day, p= <0.001) and the ingestion of unhealthy snacks had increased (1-2 meals/day vs. 2-3 meals/day, p=<0.001). A positive perception of pharmacists’ role during the pandemic was revealed. Conclusion: The present study showed that a significant change in children’s health-related behavior happened during the COVID-19 pandemic. Such changes can lead to social, physical and mental health problems. The public perceived community pharmacists as trusted health care professionals during the pandemic.
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Affiliation(s)
- Samar Thiab
- PhD. Faculty of Pharmacy, Applied Science Private University, Amman, Jordan.
| | - Muna Barakat
- PhD. Faculty of Pharmacy, Applied Science Private University, Amman, Jordan.
| | - Raja'a Qudah
- MSc. Faculty of Pharmacy, Applied Science Private University, Amman, Jordan.
| | - Iman Basheti
- PhD. Faculty of Pharmacy, Applied Science Private University, Amman, Jordan.
| | - Safa Daoud
- PhD. Faculty of Pharmacy, Applied Science Private University, Amman, Jordan.
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Al-Tawil MF, Daoud S, Hatmal MM, Taha MO. Discovery of new Cdc2-like kinase 4 (CLK4) inhibitors via pharmacophore exploration combined with flexible docking-based ligand/receptor contact fingerprints and machine learning. RSC Adv 2022; 12:10686-10700. [PMID: 35424985 PMCID: PMC8982525 DOI: 10.1039/d2ra00136e] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 03/31/2022] [Indexed: 11/21/2022] Open
Abstract
Cdc2-like kinase 4 (CLK4) inhibitors are of potential therapeutic value in many diseases particularly cancer. In this study, we combined extensive ligand-based pharmacophore exploration, ligand–receptor contact fingerprints generated by flexible docking, physicochemical descriptors and machine learning-quantitative structure–activity relationship (ML-QSAR) analysis to investigate the pharmacophoric/binding requirements for potent CLK4 antagonists. Several ML methods were attempted to tie these properties with anti-CLK4 bioactivities including multiple linear regression (MLR), random forests (RF), extreme gradient boosting (XGBoost), probabilistic neural network (PNN), and support vector regression (SVR). A genetic function algorithm (GFA) was combined with each method for feature selection. Eventually, GFA-SVR was found to produce the best self-consistent and predictive model. The model selected three pharmacophores, three ligand–receptor contacts and two physicochemical descriptors. The GFA-SVR model and associated pharmacophore models were used to screen the National Cancer Institute (NCI) structural database for novel CLK4 antagonists. Three potent hits were identified with the best one showing an anti-CLK4 IC50 value of 57 nM. Ligand-based pharmacophores, ligand–receptor contact fingerprints, physicochemical descriptors and machine learning were combined to probe binding of potent CLK4 antagonists. GFA-SVR gave the best model. Virtual screening identified 3 nanomolar hits.![]()
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Affiliation(s)
- Mai Fayiz Al-Tawil
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Jordan Amman 11942 Jordan
| | - Safa Daoud
- Department of Pharmaceutical Chemistry and Pharmacognosy, Faculty of Pharmacy, Applied Sciences Private University Amman Jordan
| | - Ma'mon M Hatmal
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, The Hashemite University PO Box 330127 Zarqa 13133 Jordan
| | - Mutasem Omar Taha
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Jordan Amman 11942 Jordan
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Daoud S, Taha M. Ligand-Based Modeling of CXC Chemokine Receptor 4 and Identification of Inhibitors of Novel Chemotypes as Potential Leads towards New Anti-COVID-19 Treatments. Med Chem 2022; 18:871-883. [PMID: 35040417 DOI: 10.2174/1573406418666220118153541] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 10/21/2021] [Revised: 12/05/2021] [Accepted: 12/08/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Chemokines are involved in several human diseases and in different stages of COVID-19 infection and play critical role in the pathophysiology of the associated acute respiratory disease syndrome, a major complication leading to death among COVID-19 patients. In particular, CXC chemokine receptor 4 (CXCR4) was found to be highly expressed in COVID-19 patients. METHODS We herein describe a computational workflow based on combining pharmacophore modeling and QSAR analysis towards the discovery of novel CXCR4 inhibitors. Subsequent virtual screening identified two promising CXCR4 inhibitors from the National Cancer Institute (NCI) list of compounds. The most active hit showed in vitro IC50 value of 24.4 µM. RESULTS AND CONCLUSION These results prove the validity of the QSAR model and associated pharmacophore models as means to screen virtual databases towards new CXCR4 inhibitors as leads for the development of new COVID-19 therapies.
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Affiliation(s)
- Safa Daoud
- Department of Pharmaceutical Chemistry and Pharmacognosy, Faculty of Pharmacy, Applied Sciences Private University, Amman, Jordan
| | - Mutasem Taha
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Jordan, Amman, Jordan
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Daoud S, Taha MO. Design and Synthesis of New JAK1 Inhibitors based on Sulfonamide-
Triazine Conjugates. Curr Comput Aided Drug Des 2021; 17:916-926. [DOI: 10.2174/1573409916666201224152253] [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: 08/23/2020] [Revised: 10/17/2020] [Accepted: 10/28/2020] [Indexed: 11/22/2022]
Abstract
Aims:
Design of sulfonamide-triazine derivatives as JAK1 inhibitors.
Background:
JAK1 is a kinase involved in different autoimmune diseases. JAK1 inhibitors have shown promising results
in treating autoimmune diseases.
Objectives:
To design new JAK1 inhibitors based on sulfonamides-triazine conjugates capable of binding interactions
comparable to observed interactions anchoring potent crystallographic JAK1 inhibitors.
Methods:
The crystallographic structures of 4 diverse nanomolar inhibitors complexed within JAK1 were used to guide
the synthesis of new diaminotriazine-sulfonamide-based JAK1 inhibitors.
Results:
Nineteen compounds have been prepared some of which exhibited low micromolar IC50 values against JAK1.
Conclusions:
Crystallographic complexes of diverse JAK1 inhibitors were successfully used to guide the synthesis of
novel sulfonamide-triazine-based low micromolar JAK1 inhibitors.
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Affiliation(s)
- Safa Daoud
- Department of Pharmaceutical Chemistry and Pharmacognosy, Faculty of Pharmacy, Applied Science Private University,
Amman, Jordan
| | - Mutasem O. Taha
- Department of Pharmaceutical Chemistry and Pharmacognosy, Faculty of Pharmacy, Applied Science Private University,
Amman, Jordan
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Jordan, Amman,
Jordan
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Laroussi S, Sakka S, Belghuith S, Farhat N, Hdiji O, Daoud S, Moalla K, Devaux J, Damak M, Mhiri C. Ritumixab efficacy in Treatment-resistant CIDP with tremor in an Antineurofascin155 seropositive pediatric case. Rev Neurol (Paris) 2021; 177:1310-1312. [PMID: 34256951 DOI: 10.1016/j.neurol.2021.03.005] [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] [Received: 10/13/2020] [Revised: 02/28/2021] [Accepted: 03/03/2021] [Indexed: 10/20/2022]
Affiliation(s)
- S Laroussi
- Department of Neurology, Habib Bourguiba University hospital, 3029 Sfax, Tunisia.
| | - S Sakka
- Department of Neurology, Habib Bourguiba University hospital, 3029 Sfax, Tunisia
| | - S Belghuith
- Department of Neurology, Habib Bourguiba University hospital, 3029 Sfax, Tunisia
| | - N Farhat
- Department of Neurology, Habib Bourguiba University hospital, 3029 Sfax, Tunisia
| | - O Hdiji
- Department of Neurology, Habib Bourguiba University hospital, 3029 Sfax, Tunisia
| | - S Daoud
- Department of Neurology, Habib Bourguiba University hospital, 3029 Sfax, Tunisia
| | - K Moalla
- Department of Neurology, Habib Bourguiba University hospital, 3029 Sfax, Tunisia
| | - J Devaux
- The Institute for Neurosciences of Montpellier, Saint Eloi Hospital, 34295 Montpellier, France
| | - M Damak
- Department of Neurology, Habib Bourguiba University hospital, 3029 Sfax, Tunisia
| | - C Mhiri
- Department of Neurology, Habib Bourguiba University hospital, 3029 Sfax, Tunisia
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Abdel Latif A, Saleh M, Massoud A, Daoud S. Higher detection of bladder tumor urothelial variants by using plasma kinetic bipolar resection than monopolar resection. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)01135-0] [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]
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Belghuith S, Daoud S, Smaoui N, Farhat N, Sakka S, Hdiji O, Moalla K, Damak M, Bouali MM, Mhiri C. The bidirectional relationship between epilepsy and depression. Eur Psychiatry 2021. [PMCID: PMC9471149 DOI: 10.1192/j.eurpsy.2021.910] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Introduction The relationship between epilepsy and depression has been recognized for a long time. In fact, the presence of depression could worsen the disease outcome. Objectives we aimed to study the prevalence of depression in patients with epilepsy and to assess the determinant factors of its genesis. Methods 54 patients with epilepsy, aged more than 18 years, attending the neurology department of Habib Bourguiba Hospital, Sfax, Tunisia, were enrolled for the study. All patients were administered Mini-International Neuropsychiatric Interview (MINI) for evalution of psychiatric comorbid disorders especially depression. Socio-demographic and clinical data were collected. Results A total of 54 patients were included, of whom 63% (n =34) were men. Mean duration of epilepsy was 20.13 years. The most frequent type of seizure was generalized 72.7%. Depression was present in 7.3 % of patients. Alcoholism (p=0.027) was significantly associated with occurrence of depression. Drug resistence (p = 0.03) and longer duration of epilepsy (p = 0.046) were significantly associated with occurrence of depression. No significant association was found between type of seizure, seizure frequency, medication compliance and depression. Depression wasn’t associated with anti-epileptic drug. We didn’t find any association between depression and other psychiatric comorbidities. Conclusions Depression wasn’t frequent in our study contrary to literature. The possible explanations are the reduced simple size and the sensitivity of the used tool to assess depression in epilepsy. Pursuant to literature, we found significant association between Alcoholism, drug resistance and long duration of epilepsy.
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Laroussi S, Moalla K, Hdiji O, Sakka S, Daoud S, Hadjkacem H, Farhat N, Mhiri C. Gayet wernicke encephalopathy: Don’t miss this neuropsychiatric emergency! Eur Psychiatry 2021. [PMCID: PMC9470825 DOI: 10.1192/j.eurpsy.2021.967] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction Gayet Wernicke Encephalopathy (GWE) is a diagnostic and therapeutic neuropsychiatric emergency due to thiamin deficiency (vitamin B1). Objectives The purpose of our work is to recall some clinical situations suspecting GWE, along with radiological and evolutionary profile. Methods We conducted a retrospective study concerning patients who were hospitalized in the neurology department of Habib Bourguiba Hospital between 2013 and 2020 for management of GWE. Results The median age of 7 patients was 39.57 years with sex ratio (H/F):1.33. The most common risk factor found is incoercible vomiting (5 patients), followed by chronic alcoholism (3 patients). Confusional state was the most frequent symptom found in 4 patients. The characteristic clinical triad of confusion, oculomotor disorders and ataxia was only found in 2 patients. Neuroimaging showed a typical aspect in 3 patients. The serum levels of thiamine were low in five patients and normal in two patients. After receiving parental than oral thiamin supplementation, three patients were independent after one month with a mRS score <3. Conclusions GWE is an acute neuropsychiatric emergency. Chronic alcoholism is recognized as its most common cause. The clinical triad is not constantly present. MRI shows typically bilateral symmetrical hyperintensities in periaqueductal area, periventricular region, thalami and mammillary bodies. Thiamin level can be normal since it does not accurately represent body thiamine status or in case of mutations in a thiamine-transporter gene. Thiamine therapy is warranted if any component of the GWE triad is present in an appropriate clinical setting to prevent irreversible neurological sequelae.
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Bouattour N, Farhat N, Sakka S, Hdiji O, Daoud S, Moalla K, Damak M, Mhiri C. An unusual case of acute myelopathy: Surfer's myelopathy in a teenage gymnast. Rev Neurol (Paris) 2021; 177:717-719. [PMID: 33478736 DOI: 10.1016/j.neurol.2020.09.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 08/29/2020] [Accepted: 09/01/2020] [Indexed: 10/22/2022]
Affiliation(s)
- N Bouattour
- Neurology's Department, Habib Bourguiba Hospital, Ferdaous Street, 3029 Sfax, Tunisia.
| | - N Farhat
- Neurology's Department, Habib Bourguiba Hospital, Ferdaous Street, 3029 Sfax, Tunisia
| | - S Sakka
- Neurology's Department, Habib Bourguiba Hospital, Ferdaous Street, 3029 Sfax, Tunisia
| | - O Hdiji
- Neurology's Department, Habib Bourguiba Hospital, Ferdaous Street, 3029 Sfax, Tunisia
| | - S Daoud
- Neurology's Department, Habib Bourguiba Hospital, Ferdaous Street, 3029 Sfax, Tunisia
| | - K Moalla
- Neurology's Department, Habib Bourguiba Hospital, Ferdaous Street, 3029 Sfax, Tunisia
| | - M Damak
- Neurology's Department, Habib Bourguiba Hospital, Ferdaous Street, 3029 Sfax, Tunisia
| | - C Mhiri
- Neurology's Department, Habib Bourguiba Hospital, Ferdaous Street, 3029 Sfax, Tunisia
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Talib WH, Alsalahat I, Daoud S, Abutayeh RF, Mahmod AI. Plant-Derived Natural Products in Cancer Research: Extraction, Mechanism of Action, and Drug Formulation. Molecules 2020; 25:E5319. [PMID: 33202681 PMCID: PMC7696819 DOI: 10.3390/molecules25225319] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 11/10/2020] [Accepted: 11/11/2020] [Indexed: 12/24/2022] Open
Abstract
Cancer is one of the main causes of death globally and considered as a major challenge for the public health system. The high toxicity and the lack of selectivity of conventional anticancer therapies make the search for alternative treatments a priority. In this review, we describe the main plant-derived natural products used as anticancer agents. Natural sources, extraction methods, anticancer mechanisms, clinical studies, and pharmaceutical formulation are discussed in this review. Studies covered by this review should provide a solid foundation for researchers and physicians to enhance basic and clinical research on developing alternative anticancer therapies.
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Affiliation(s)
- Wamidh H. Talib
- Department of Clinical Pharmacy and Therapeutics, Applied Science Private University, Amman 11931, Jordan;
| | - Izzeddin Alsalahat
- Department of Pharmaceutical Chemistry and Pharmacognosy, Applied Science Private University, Amman 11931, Jordan; (I.A.); (S.D.); (R.F.A.)
| | - Safa Daoud
- Department of Pharmaceutical Chemistry and Pharmacognosy, Applied Science Private University, Amman 11931, Jordan; (I.A.); (S.D.); (R.F.A.)
| | - Reem Fawaz Abutayeh
- Department of Pharmaceutical Chemistry and Pharmacognosy, Applied Science Private University, Amman 11931, Jordan; (I.A.); (S.D.); (R.F.A.)
| | - Asma Ismail Mahmod
- Department of Clinical Pharmacy and Therapeutics, Applied Science Private University, Amman 11931, Jordan;
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Daoud S, Taha MO. Pharmacophore modeling of JAK1: A target infested with activity-cliffs. J Mol Graph Model 2020; 99:107615. [PMID: 32339898 DOI: 10.1016/j.jmgm.2020.107615] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 01/25/2020] [Revised: 04/01/2020] [Accepted: 04/02/2020] [Indexed: 12/14/2022]
Abstract
Janus kinase 1 (JAK1) is protein kinase involved in autoimmune diseases (AIDs). JAK1 inhibitors have shown promising results in treating AIDs. JAK1 inhibitors are known to exhibit regions of SAR discontinuity or activity cliffs (ACs). ACs represent fundamental challenge to successful QSAR/pharmacophore modeling because QSAR modeling rely on the basic premise that activity is a smooth continuous function of structure. We propose that ACs exist because active ACs members exhibit subtle, albeit critical, enthalpic features absent from their inactive twins. In this context we compared the performances of two computational modeling workflows in extracting valid pharmacophores from 151 diverse JAK1 inhibitors that include ACs: QSAR-guided pharmacophore selection versus docking-based comparative intermolecular contacts analysis (db-CICA). The two methods were judged based on the receiver operating characteristic (ROC) curves of their corresponding pharmacophore models and their abilities to distinguish active members among established JAK1 ACs. db-CICA modeling significantly outperformed ligand-based pharmacophore modeling. The resulting optimal db-CICA pharmacophore was used as virtual search query to scan the National Cancer Institute (NCI) database for novel JAK1 inhibitory leads. The most active hit showed IC50 of 1.04 μM. This study proposes the use of db-CICA modeling as means to extract valid pharmacophores from SAR data infested with ACs.
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Affiliation(s)
- Safa Daoud
- Department of Pharmaceutical Chemistry and Pharmacognosy, Faculty of Pharmacy, Applied Science Private University, Amman, Jordan
| | - Mutasem O Taha
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Jordan, Amman, Jordan.
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Moalla K, Damak M, Chakroun O, Farhat N, Sakka S, Daoud S, Hdiji O, Kacem HH, Rekik N, Mhiri C. Predictive value of C-reactive protein for the outcome after stroke. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.651] [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: 11/26/2022]
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Moalla K, Damak M, Chakroun O, Farhat N, Hdiji O, Sakka S, Daoud S, Kacem HH, Rekik N, Mhiri C. Who is the target population for shortening prehospital delay in acute stroke? J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.654] [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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Ellouz E, Daoud S. Ischemic stroke in a case of Koyanagi Harada syndrome. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.663] [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: 11/30/2022]
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Daoud S, Sakka S, Farhat N, Hdiji O, Kacem HH, Damak M, Mhiri C. Adult onset opsoclonus-myoclonus-ataxia syndrome, clinical features and diagnostic findings. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.1305] [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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Moalla K, Damak M, Chakroun O, Farhat N, Daoud S, Hdiji O, Sakka S, Kacem HH, Rekik N, Mhiri C. Incidence and predictors of post‐stroke epilepsy. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.649] [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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Daoud S, Farhat N, Sakka S, Hdiji O, Moalla K, Kacem HH, Damak M, Mhiri C. Frontal presentation of Alzheimer’s Disease. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.976] [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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Bouchakour M, Ayoun A, Daoud S, Guermi N, Mahi Y, Talbi M. Les défects du tube neural : notre expérience. Neurochirurgie 2018. [DOI: 10.1016/j.neuchi.2018.05.027] [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: 11/26/2022]
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Charfi N, Daoud S, Farhat N, Bouali MM, Zouari L, Zouari N, Thabet JB, Damak M, Mhiri C, Maalej M. Prevalence of psychiatric comorbidities in epilepsy. Eur Psychiatry 2017. [DOI: 10.1016/j.eurpsy.2017.01.536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
IntroductionEpilepsy is a chronic disease defined as a brain disorder, characterized by a predisposition to present seizures, generating cognitive, psychological, and social consequences.ObjectiveTo determine the prevalence of psychiatric comorbid disorders in patients with epilepsy (PWEs) and its associated factors.MethodsWe conducted a cross-sectional study involving 30 PWEs who were treated in the neurology department of Habib Bourguiba Hospital in Sfax, Tunisia. We used the Mini International Neuropsychiatric Interview for the diagnosis of Axis I psychiatric disorders.ResultsThe half of patients had psychiatric comorbidities: 4 had major depressive disorder (MDD), 2 had MDD with generalized anxiety disorder, 4 had MDD with social phobia, 1 had bipolar disorder type I, 1 had panic disorder, 1 had agoraphobia and 2 had generalized anxiety disorder.Twenty-five PWEs had seizure-onset below 30 years old and among them, 40% had psychiatric comorbidities. Among patients who had seizure-onset above 30 years old, none had psychiatric comorbidities. Psychiatric comorbidities were found in 71.5% of patients with seizure frequency >2 per year. Psychiatric comorbidities were more common in patients with generalized seizures compared to whom with partial seizures (53% versus 45%). It was also more common in patients treated with polytherapy compared to whom with monotherapy (64% versus 37.5%).ConclusionThe prevalence of psychiatric comorbidities is relatively high among PWEs. The most frequent diagnoses found were mood and anxiety disorders. It is very important to identify them and treat them to enhance seizure control.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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François-Fiquet C, Dupouy M, Daoud S, Poli-Merol ML. [Cleft lip and palate: Health-related quality of life (French VSP-A scale) for patients and their family. About 51 families]. ANN CHIR PLAST ESTH 2014; 60:192-200. [PMID: 25218967 DOI: 10.1016/j.anplas.2014.08.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [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: 07/06/2014] [Accepted: 08/08/2014] [Indexed: 11/30/2022]
Abstract
PURPOSE, OBJECTIVE The aim of our study was to investigate the quality of life of patients undergoing cleft lip or cleft lip and palate as well as the perception of quality of life of patients perceived by their parents slot. PATIENTS AND METHODS Fifty-one adolescents and young adults (29 boys and 22 girls) who underwent cleft lip (FL 22) or lip and palate (CLP 29) and their parents have received psychological and surgical joint consultation. The minimum age for inclusion was 10 years (mean age 15.5 years). A quality of life questionnaire (VSP-A) "children" was given between 10 and 11 years and a questionnaire "adolescents" beyond. Parents have them answered a questionnaire of perceived quality of life of their children. The results were analyzed and compared to a control population (Statistics Student test). Perceived parents lived in relation to their children was obtained through the study of linear regression curves. RESULTS The response rate to the questionnaires was 66.7% for parents, 85.7% for children and 63.6% for teenagers. The quality of life of the patients was assessed by the patients to 65.1/100 on average. The index of overall quality of life was superimposed on the control population (p=0.66). Perceived quality of life of patients by their parents was fairly close to the quality of life described by patients (66.5). On the areas of family, education, recreation, quality index was proportionately less than for other areas. For each of these areas, parents overestimated the quality of life of their child. Compared to the control group the fields of education, leisure, vitality quality index were significantly lower in the/FL population P.
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Affiliation(s)
- C François-Fiquet
- Chirurgie pédiatrique, pôle mère enfant, American Memorial Hospital, CHU de Reims, 47, rue Cognaq-Jay, 51092 Reims cedex, France; Chirurgie plastique, reconstructrice et esthétique, pôle locomoteur, hôpital Maison-Blanche, CHU de Reims, 45, rue Cognacq-Jay, 51092 Reims cedex, France; EA 3801, université de Reims Champagne Ardenne, URCA, SFR CAP santé, 51, rue Cognacq-Jay, 51100 Reims, France.
| | - M Dupouy
- Chirurgie pédiatrique, pôle mère enfant, American Memorial Hospital, CHU de Reims, 47, rue Cognaq-Jay, 51092 Reims cedex, France
| | - S Daoud
- Chirurgie pédiatrique, pôle mère enfant, American Memorial Hospital, CHU de Reims, 47, rue Cognaq-Jay, 51092 Reims cedex, France
| | - M-L Poli-Merol
- Chirurgie pédiatrique, pôle mère enfant, American Memorial Hospital, CHU de Reims, 47, rue Cognaq-Jay, 51092 Reims cedex, France
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Daoud S, Afifi FU, Al-Bakri AG, Kasabri V, Hamdan II. Preparation, Physicochemical Characterization and Biological Evaluation of some Hesperidin Metal Complexes. Iran J Pharm Res 2014; 13:909-18. [PMID: 25276191 PMCID: PMC4177651] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The ability of hesperidin (HP) to form complexes with five metals; cobalt, nickel, zinc, calcium and magnesium was investigated. The complexation was studied using U.V spectroscopic titration, in methanol as well as aqueous buffer solutions (physiological conditions). Potential complexes were studied by IR and NMR spectroscopy, melting point and their solubility were also evaluated. The interaction of HP and its metal complexes with DNA was investigated by U.V spectroscopy. HP and its potential complexes were also tested for their ability to inhibit alpha amylase and alpha glucosidase enzymes. The results indicated that HP can form 1:1 complexes with cobalt, nickel and zinc in methanolic solution but not in aqueous buffers. Both HP and its metal complexes were found to intercalate DNA, at physiological condition, with preference to GC rich sequences. HP-metal complexes appeared to have higher affinity towards poly A DNA than the free HP. Neither HP nor its complexes exhibited antimicrobial activity against Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa or Candida albicans. Results showed that HP has little inhibitory action on glucosidase and amylase enzymes with no obvious effect of complexation on the behavior of free HP. In conclusion HP was shown to form 1:complexes with the studied metal in methanol but not in aqueous buffer solutions. In presence of DNA however, complex formation in aqueous solutions seem to be encouraged with differential effect between the complexes and free HP.
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Affiliation(s)
- Safa Daoud
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Jordan, Amman, 11942, Jordan.
| | - Fatma U Afifi
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Jordan, Amman, 11942, Jordan.
| | - Amal G Al-Bakri
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, University of Jordan, Amman, 11942, Jordan.
| | - Violet Kasabri
- Department of Biopharmaceutics and Clinical Pharmacy, Faculty of Pharmacy, University of Jordan, Amman, 11942, Jordan.
| | - Imad I Hamdan
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Jordan, Amman, 11942, Jordan. ,Corresponding author: E-mail:
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Servais A, Brodin-Sartorius A, Pauly P, Daoud S, Niaudet P. Cystinose et grossesse. Nephrol Ther 2012. [DOI: 10.1016/j.nephro.2012.07.128] [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: 10/27/2022]
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Buron F, Vouillarmet J, Brunet M, Chauvet C, Daoud S, Codas R, Carlier MC, Houzard C, Thivolet C, Morelon E, Badet L. Première transplantation simultanée rein – surrénale – pancréas : suivi à six mois. Nephrol Ther 2012. [DOI: 10.1016/j.nephro.2012.07.087] [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: 10/27/2022]
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Hu JCY, Seo BK, Neri QV, Rozenwaks Z, Palermo GD, Fields T, Neri QV, Monahan D, Rosenwaks Z, Palermo GD, Szkodziak P, Plewka K, Wozniak S, Czuczwar P, Mroczkowski A, Lorenzo Leon C, Hernandez J, Chinea Mendez E, Concepcion Lorenzo C, Sanabria Perez V, Puopolo M, Palumbo A, Toth B, Franz C, Montag M, Boing A, Strowitzki T, Nieuwland R, Griesinger G, Schultze-Mosgau A, Cordes T, Depenbusch M, Diedrich K, Vloeberghs V, Verheyen G, Camus M, Van de Velde H, Goossens A, Tournaye H, Coppola G, Di Caprio G, Wilding M, Ferraro P, Esposito G, Di Matteo L, Dale R, Coppola G, Dale B, Daoud S, Auger J, Wolf JP, Dulioust E, Lafuente R, Lopez G, Brassesco M, Hamad M, Montenarh M, Hammadeh M, Robles F, Magli MC, Crippa A, Pescatori E, Ferraretti AP, Gianaroli L, Zahiri M, Movahedin M, Mowla SJ, Noruzinia M, Crippa A, Ferraretti AP, Magli MC, Crivello AM, Robles F, Gianaroli L, Sermondade N, Dupont C, Hafhouf E, Cedrin-Durnerin I, Poncelet C, Benzacken B, Levy R, Sifer C, Ferfouri F, Boitrelle F, Clement P, Molina Gomes D, Bailly M, Selva J, Vialard F, Yaprak E, Basar M, Guzel E, Arda O, Irez T, Norambuena P, Krenkova P, Tuettelmann F, Kliesch S, Paulasova P, Stambergova A, Macek M, Macek M, Rivera R, Garrido-Gomez T, Galletero S, Meseguer M, Dominguez F, Garrido N, Mallidis C, Sanchez V, Weigeng L, Redmann K, Wistuba J, Gross P, Wuebbelling F, Fallnich C, Burger M, Kliesch S, Schlatt S, San Celestino Carchenilla M, Pacheco Castro A, Simon Sanjurjo P, Molinero Ballesteros A, Rubio Garcia S, Garcia Velasco JA, Macanovic B, Otasevic V, Korac A, Vucetic M, Garalejic E, Ivanovic Burmazovic I, Filipovic MR, Buzadzic B, Stancic A, Jankovic A, Velickovic K, Golic I, Markelic M, Korac B, Gosalvez J, Ruiz-Jorro M, Garcia-Ochoa C, Sachez-Martin P, Martinez-Moya M, Caballero P, Hasegawa N, Fukunaga N, Nagai R, Kitasaka H, Yoshimura T, Tamura F, Kato M, Nakayama K, Oono H, Kojima E, Yasue K, Watanabe H, Asano E, Hashiba Y, Asada Y, Das M, Al-Hathal N, San-Gabriel M, Phillips S, Kadoch IJ, Bissonnette F, Holzer H, Zini A, Zebitay AG, Irez T, Ocal P, Sahmay S, Karahuseyinoglu S, Usta T, Repping S, Silber S, Van Wely M, Datta A, Nayini K, Eapen A, Barlow S, Lockwood G, Tavares R, Baptista M, Publicover SJ, Ramalho-Santos J, Vaamonde D, Rodriguez I, Diaz A, Darr C, Chow V, Ma S, Smith R, Jeria F, Rivera J, Gabler F, Nicolai H, Cunha M, Viana P, Goncalves A, Silva J, Oliveira C, Teixeira da Silva J, Ferraz L, Madureira C, Doria S, Sousa M, Barros A, Herrero MB, Delbes G, Troueng E, Holzer H, Chan PTK, Vingris L, Setti AS, Braga DPAF, Figueira RCS, Iaconelli A, Borges E, Sargin Oruc A, Gulerman C, Zeyrek T, Yilmaz N, Tuzcuoglu D, Cicek N, Scarselli F, Terribile M, Franco G, Zavaglia D, Dente D, Zazzaro V, Riccio T, Minasi MG, Greco E, Cejudo-Roman A, Ravina CG, Candenas L, Gallardo-Castro M, Martin-Lozano D, Fernandez-Sanchez M, Pinto FM, Balasuriya A, Serhal P, Doshi A, Harper J, Romany L, Garrido N, Fernandez JL, Pellicer A, Meseguer M, Ribas-Maynou J, Garcia-Peiro A, Fernandez-Encinas A, Prada E, Jorda I, Cortes P, Llagostera M, Navarro J, Benet J, Kesici H, Cayli S, Erdemir F, Karaca Z, Aslan H, Karaca Z, Cayli S, Ocakli S, Kesici H, Erdemir F, Aslan H, Tas U, Ozdemir AA, Aktas RG, Tok OE, Ocakli S, Cayli S, Karaca Z, Erdemir F, Aslan H, Li S, Lu C, Hwu Y, Lee RK, Landaburu I, Gonzalvo MC, Clavero A, Ramirez JP, Pedrinaci S, Serrano M, Montero L, Carrillo S, Weiss J, Ortiz AP, Castilla JA, Sahin O, Bakircioglu E, Serdarogullari M, Bayram A, Yayla S, Ulug U, Tosun SB, Bahceci M, Aktas RG, Ozdemir AA, Tok OE, Yoon SY, Shin DH, Shin TE, Park EA, Won HJ, Kim YS, Lee WS, Yoon TK, Lee DR, Hattori H, Nakajo Y, Kyoya T, Kuchiki M, Kanto S, Kyono K, Park M, Park MR, Lim EJ, Lee WS, Yoon TK, Lee DR, Choi Y, Mitra A, Bhattacharya J, Kundu A, Mukhopadhaya D, Pal M, Enciso M, Alfarawati S, Wells D, Fernandez-Encinas A, Garcia-Peiro A, Ribas-Maynou J, Abad C, Amengual MJ, Navarro J, Benet J, Esmaeili V, Safiri M, Shahverdi AH, Alizadeh AR, Ebrahimi B, Brucculeri AM, Ruvolo G, Giovannelli L, Schillaci R, Cittadini E, Scaravelli G, Perino A, Cortes Gallego S, Gabriel Segovia A, Nunez Calonge R, Guijarro Ponce A, Ortega Lopez L, Caballero Peregrin P, Heindryckx B, Kashir J, Jones C, Mounce G, Ramadan WM, Lemmon B, De Sutter P, Parrington J, Turner K, Child T, McVeigh E, Coward K, Bakircioglu E, Ulug U, Tosun S, Serdarogullari M, Bayram A, Ciray N, Bahceci M, Saeidi S, Shapouri F, Hoseinifar H, Sabbaghian M, Pacey A, Aflatoonian R, Bosco L, Ruvolo G, Carrillo L, Pane A, Manno M, Roccheri MC, Cittadini E, Selles E, Garcia-Herrero S, Martinez JA, Munoz M, Meseguer M, Garrido N, Durmaz A, Dikmen N, Gunduz C, Tavmergen Goker E, Tavmergen E, Gozuacik D, Vatansever HS, Kara B, Calimlioglu N, Yasar P, Tavmergen E, Tavmergen Goker E, Semerci B, Baka M, Ozbilgin K, Karabulut A, Tekin A, Sabah B, Cottin V, Kottelat D, Fellmann M, Halm S, Rosenthaler E, Kisida T, Kojima F, Sakamoto T, Makutina VA, Balezin SL, Rosly OF, Slishkina TV, Hatzi E, Lazaros L, Xita N, Makrydimas G, Sofikitis N, Kaponis A, Stefos T, Zikopoulos K, Georgiou I, Zikopoulos K, Lazaros L, Xita N, Makrydimas G, Sofikitis N, Kaponis A, Stefos T, Hatzi E, Georgiou I, Georgiou I, Lazaros L, Xita N, Makrydimas G, Sofikitis N, Kaponis A, Stefos T, Hatzi E, Zikopoulos K, Hibi H, Ohori T, Sumitomo M, Asada Y, Anarte C, Calvo I, Domingo A, Presilla N, Aleman M, Bou R, Guardiola F, Agirregoikoa JA, De Pablo JL, Barrenetxea G, Zhylkova I, Feskov O, Feskova I, Zozulina O, Somova O, Nabi A, Khalili MA, Roudbari F, Parmegiani L, Cognigni GE, Bernardi S, Taraborrelli S, Troilo E, Ciampaglia W, Pocognoli P, Infante FE, Tabarelli de fatis C, Arnone A, Maccarini AM, Filicori M, Silva L, Oliveira JBA, Petersen CG, Mauri AL, Massaro FC, Cavagna M, Baruffi RLR, Franco JG, Fujii Y, Endou Y, Mtoyama H, Shokri S, Aitken RJ. ANDROLOGY. Hum Reprod 2012. [DOI: 10.1093/humrep/27.s2.73] [Citation(s) in RCA: 4] [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: 11/13/2022] Open
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Brodin-Sartorius A, Mekki Y, Pastural M, Billaud G, Daoud S, Chauvet C, Touraine JL, Lina B, Morelon E, Thaunat O. Severe transfusion-transmitted parvovirus B19 infection in a naive immunocompromised patient. Transpl Infect Dis 2011; 13:97-8. [DOI: 10.1111/j.1399-3062.2010.00546.x] [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] [Indexed: 11/28/2022]
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Pons M, Messaoudi R, Fiquet C, Jolly C, Chaouadi D, Lefebvre F, Belouadah M, Bouche-Pillon MA, Daoud S, Poli-Merol ML. Use of cutaneous flap for continent cystostomy (daoud technique). J Urol 2010; 184:1116-21. [PMID: 20650478 DOI: 10.1016/j.juro.2010.05.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2009] [Indexed: 11/16/2022]
Abstract
PURPOSE We present the results of a new technique using a pedicled cutaneous flap for continent cystostomy. MATERIALS AND METHODS A total of 15 boys and 8 girls (mean +/- SD age 13.4 +/- 6.4 years) underwent continent cystostomy for neurogenic bladder (20), bladder exstrophy (2) and sequelae of hypospadias (1) between 1999 and 2008. In this procedure a rectangular pedicled flap is surgically elevated from a hairless area on the abdomen. The flap is tubularized and passed through the anterior abdominal wall directly into the bladder. A submucosal detrusor incision is made to expose the bladder mucosa, and the distal part of the flap is anastomosed to the bladder mucosa in a circular manner. The tube is positioned along the incised detrusor, which is closed over. Viability of the flap, self-catheterization management and continence status are then evaluated. RESULTS Mean +/- SD followup was 4.5 +/- 3.1 years. There was 1 case of distal necrosis of the flap, which required a secondary surgery using the Mitrofanoff technique. The 22 remaining flaps were initially viable, although 2 patients were eventually lost to followup and 3 subsequently presented with false-passage incidents requiring a few days of calibration using a balloon catheter. Dryness was achieved immediately in 73% of the cases. After adding a complementary bulking agent the dryness rate reached 77%. CONCLUSIONS We present a novel approach to continent cystostomy that is safe and easy to perform. This technique is a less invasive and more efficient alternative to other commonly used approaches.
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Affiliation(s)
- M Pons
- Pediatric Surgical Unit, CHU Reims, American Memorial Hospital, Reims, France
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Tamby E, Francois-Fiquet C, Belouadah M, Lefebvre F, Bouche-Pillon M, Chaouadi D, Ludot H, Daoud S, Poli-Merol M. P207 - Maladie de Hirschsprung et abaissement trans-anal : évaluation précoce des résultats. Arch Pediatr 2010. [DOI: 10.1016/s0929-693x(10)70607-2] [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: 10/19/2022]
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Bollet M, Servant N, Kreike B, Halfwerk H, Daoud S, Lebigot I, Bartelink H, Fourquet A, Sigal-Zafrani B, van de Vijver M. 114 Validation process of a gene-expression signature of local recurrences after breast-conserving treatments. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)70145-2] [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: 11/28/2022] Open
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François-Fiquet C, Dupouy M, Poli-Mérol M, Daoud S. SFCP-043 – Chirurgie plastique – Fentes labio-palatines : qualité de vie (VSP-A) patients et parents. Arch Pediatr 2008. [DOI: 10.1016/s0929-693x(08)71995-x] [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: 10/21/2022]
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Hamza A, Amin A, Daoud S. The protective effect of a purified extract of Withania somnifera against doxorubicin-induced cardiac toxicity in rats. Cell Biol Toxicol 2007; 24:63-73. [PMID: 17520333 DOI: 10.1007/s10565-007-9016-z] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [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: 12/11/2006] [Accepted: 04/02/2007] [Indexed: 11/24/2022]
Abstract
The therapeutic value of doxorubicin as an effective antineoplastic agent is limited by its cardiotoxic side-effects. The administration of doxorubicin (10 mg/kg) to male Wistar rats induced necrosis and apoptosis in heart tissues. It also caused oxidative stress damage as evidenced by the elevation of malondialdehyde and protein carbonyl levels and catalase activity, accompanied by the concurrent depletion of total antioxidant capacity and of superoxide dismutase level in cardiac tissues. The doxorubicin-induced cardiotoxicity and oxidative stress damage were also accompanied by increases of myeloperoxidase activity, total calcium content, and the expression of Bcl-2 protein in heart tissues. Most of these doxorubicin-induced biochemical and histological alterations were effectively attenuated by prior administration of purified standardized extract (1.5% withanolides; manufactured by Idea Sphere Inc., American Fork, UT, USA) of Withania somnifera (300 mg/kg). Thus, Withania may play a role in the protection against cardiotoxicity and thus might be a useful adjuvant therapy where doxorubicin is the cancer-treating drug.
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Affiliation(s)
- A Hamza
- Biology Department, College of Science, UAE University, Al-Ain, United Arab Emirates
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Akakpo-Numado GK, Mal-Lawane M, Belouadah M, Kabore B, Lefort G, Daoud S. [Management of Lagrange and Rigault stage IV extension type supracondylar fracture of the humerus in children]. ACTA ACUST UNITED AC 2006; 91:664-70. [PMID: 16327672 DOI: 10.1016/s0035-1040(05)84471-x] [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] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
PURPOSE OF THE STUDY Lagrange and Rigault stage IV extension type supracondylar fracture of the humerus (Gartland and Wilkins type III) involves major displacement, making treatment difficult. Several therapeutic methods have been described but indications vary considerably between teams. We conducted a retrospective analysis in order to evaluate the results of different methods, identify the most adapted technique, and detail the conditions necessary for good results with the collar and cuff immobilization method described by Blount. MATERIAL AND METHODS Forty-four children (30 boys and 14 girls), mean age seven years six months, were treated between January 1990 and December 2001. The collar and cuff immobilization technique was used for sixteen children (including four who underwent open revision for early secondary displacement), percutaneous pinning for two, and open crossed pinning for thirty (including four who developed secondary displacement after collar and cuff immobilization). One out of two collar and cuff treatments was instituted within six hours of injury. The four secondary displacements after collar and cuff immobilization treatment occurred after fracture reduction more than six hours after injury. The proportion of open reductions increased with longer delay to reduction after injury. Mean immobilization was three and a half weeks. The Flynn criteria were used to assess outcome at mean seven years eight months follow-up. RESULTS Outcome was satisfactory in all children treated with definitive collar and cuff immobilization and by percutaneous pinning; the rate was 97% after open procedures (persistent sequelae of radial palsy in one child). DISCUSSION Early treatment before six hours increased the chances of success with the collar and cuff method which remains the technique of choice for Lagrange and Rigault stage IV extension type supracondylar fractures. In the event of failure or complications, other classical methods should be discussed, including percutaneous pinning or direct access for open osteosynthesis.
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Affiliation(s)
- G K Akakpo-Numado
- Clinique Chirurgicale Pédiatrique de l'Université, American Memorial Hospital, CHU de Reims, 47, rue Cognacq-Jay, 51092 Reims Cedex
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Kolsi M, Daoud S, Abdelmalek M, Masmoudi A, Kammoun S, Frikha I. [Mediastinal localisation of a thoracic duct lymphocele--account of a surgical case]. Rev Mal Respir 2006; 22:1039-42. [PMID: 16598864 DOI: 10.1016/s0761-8425(05)85735-3] [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: 11/17/2022]
Abstract
INTRODUCTION Lymphocele of the thoracic duct is a rare pathological entity occurring as a consequence of deterioration and cystic dilation wall of this vessel. It may be of congenital or degenerative origin. OBSERVATION We report the case of a 47 year old patient, operated on for a symptomatic cyst localised by CT scan to the inferoposterior mediastinum. At postero-lateral thoracotomy it was identified as a lymphocele and completely resected. Chemical analysis of the liquid and histopathology study of the cystic wall confirmed the diagnosis. The patient's post operative course was uneventful. CONCLUSION This case demonstrates the clinical characteristics of this entity and describes diagnostic techniques and surgical management.
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Affiliation(s)
- M Kolsi
- Service de Chirurgie Thoracique et Cardiovasculaire EPS Habib Bourguiba Sfax, Tunisie.
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Mal-Lawane M, Belouadah M, Lefort G, Daoud S. [Percutaneous rotational osteoclasis in management of congenital radio-ulnar synostosis]. ACTA ACUST UNITED AC 2006; 91:719-23. [PMID: 16552993 DOI: 10.1016/s0035-1040(05)84482-4] [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: 11/24/2022]
Abstract
PURPOSE OF THE STUDY Congenital radio-ulnar synostosis blocks the wrist in a position of more or less pronounced pronation. The degree of pronation and possible bilateral involvement can compromise upper limb function. We propose percutaneous osteoclasis of the antebrachial skeleton to remedy this situation PATIENTS AND METHODS We performed 12 percutaneous rotation osteoclasis procedures. The objective was to weaken the metaphysodiaphyseal cortical periosteum of one or both of the forearm bones by intermittent perforations. This enabled derotation of the wrist which was maintained for six to eight weeks in a brachiopalmar cast. RESULTS Mean correction of pronation was 51 degrees. There were no cases of vascular or nervous complications and healing was uneventful. The esthetic outcome was very satisfactory. DISCUSSION Surgery is not indicated for all cases of synostosis. We retain for surgery patients presenting pronation at 60 degrees or more. At this degree of pronation, function is greatly compromised in adolescence, particularly if there is a bilateral involvement. Compared with other techniques, percutaneous osteoclasis is a simple safe and reliable technique. Reoperation is not required to remove material. The procedure is easier in young children, preferably at the age of 3 to 7 years, before the development of a functional handicap.
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Schelling E, Daoud S, Daugla DM, Diallo P, Tanner M, Zinsstag J. Morbidity and nutrition patterns of three nomadic pastoralist communities of Chad. Acta Trop 2005; 95:16-25. [PMID: 15866506 DOI: 10.1016/j.actatropica.2005.03.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2003] [Revised: 02/28/2005] [Accepted: 03/08/2005] [Indexed: 11/24/2022]
Abstract
As a part of an interdisciplinary research and action programme, morbidity and nutritional patterns were assessed in three nomadic communities: Fulani and Arab cattle breeders and Arab camel breeders, of two prefectures in Chad. The predominant morbidity pattern of Chadian nomadic pastoralists (representing approximately 10% of the total population of the country) had not been documented so far. A total of 1092 women, men and children was examined by a physician and interviewed during two surveys in the dry season and one in the wet season (1999--2000). Participants with no complaint were rare. Pulmonary disorders (e.g. bronchitis) were most often diagnosed for children under 5 years of age. Of the adult participants, 4.6% were suspected of tuberculosis. Febrile diarrhoea occurred more often during the wet season when access to clean drinking water was precarious. Malaria was only rarely clinically diagnosed among Arabs during the dry season, whereas Fulani, who stayed in the vicinity of Lake Chad, were also affected during this period. A 24-h dietary recall showed that less Arab women than men consumed milk during the dry season (66% versus 92%). Malnutrition was only documented for 3 out of 328 children (0--14 years). Arab women in childbearing age had a higher proportion of children not surviving when compared to Fulani women (0.2 versus 0.07). This study identified several implications for reseach and interventions in nomadic settings. Innovative and integrated health services for nomads can possibly be extended to many settings as nomadic pastoralists have in common a similar way of life driven by the needs of their animals.
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Affiliation(s)
- E Schelling
- Swiss Tropical Institute, Department of Public Health and Epidemiology, Socinstrasse 57, P.O. Box, CH-4002 Basel, Switzerland.
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Piña IL, Daoud S. Exercise and heart failure. Minerva Cardioangiol 2004; 52:537-46. [PMID: 15729214] [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: 05/01/2023]
Abstract
This report will review the abnormalities of the peripheral circulation and skeletal muscle which are part of the heart failure syndrome and can limit exercise tolerance; introduce trials that have shown benefits of exercise training in a variety of heart failure patients; suggest strategies for recommending activity training in patients with heart failure. Finally, this report will identify areas where data are missing and where trials are currently being undertaken.
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Affiliation(s)
- I L Piña
- Section of Heart Failure and Cardiac Transplantation, Case Western Reserve University, University Hospitals of Cleveland, Cleveland, OH 44106-5038, USA
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Abstract
PURPOSE OF THE STUDY Chronic shoulder instability is uncommon in patients with an immature skeleton. Some of these pediatric patients can produce their dislocation voluntarily raising the question of the traumatic or constitutional nature of the condition as well as its direction and tolerance. We report our experience with 29 patients. MATERIAL AND METHOD Over a period of 28 years, 29 children aged 5 to 15 years were treated for voluntary shoulder dislocation. The dislocation was painful and poorly tolerated in 19, affecting daily life and sports activities. Posterior dislocation was observed in 15 patients and anterior dislocation in 4, but the direction was not always easy to establish, particularly in children with ligament laxity; multiple directions were not uncommon. Rehabilitation for at least eight months did not relieve pain in 11 patients who had a sensation of a blocked, unreliable shoulder which could not be controlled voluntarily. Posterior capsulorrhaphy was performed in 8 patients and anterior capsulorrhaphy in 3. RESULTS Mean follow-up was 8 years. At last follow-up, all shoulders were stable and shoulder motion was normal with no loss of function. More than half of the children had resumed sports activities. Capsulorrhaphy was proposed when the pre-operative explorations did not reveal any bone or rim anomaly. The only preoperative finding in the operated patients was increased capsule volume, particularly in the inferior portion. Intraoperatively, ulceration of the humeral cartilage was found in two patients. Anatomic reconstruction of the capsuloligamentary structures enabled recovery of passive stability and active stability of the scapulohumeral joint, preventing further voluntary dislocation.
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Affiliation(s)
- G Lefort
- American Memorial Hospital, 47, rue Cognacq-Jay, 51092 Reims
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Schelling E, Diguimbaye C, Daoud S, Nicolet J, Boerlin P, Tanner M, Zinsstag J. Brucellosis and Q-fever seroprevalences of nomadic pastoralists and their livestock in Chad. Prev Vet Med 2004; 61:279-93. [PMID: 14623412 DOI: 10.1016/j.prevetmed.2003.08.004] [Citation(s) in RCA: 185] [Impact Index Per Article: 9.3] [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: 11/28/2022]
Abstract
As a part of a research-and-action partnership between public health and veterinary medicine, the relationships between the seroprevalences of brucellosis and Q-fever in humans and livestock were evaluated in three nomadic communities of Chad (Fulani cattle breeders, and Arab camel and cattle breeders). Nomad camps were visited between April 1999 and April 2000. A total of 860 human and 1637 animal sera were tested for antibodies against Brucella spp., and 368 human and 613 animal sera for Coxiella burnetii. The same indirect ELISA was used for livestock and human sera, and the test characteristics for its use on human sera were evaluated. Twenty-eight people were seropositive for brucellosis (seroprevalence 3.8%). Brucella seroprevalence was higher in cattle (7%) than other livestock, and brucellosis seropositivity was a significant factor for abortion in cattle (OR=2.8). No correlation was found between human brucellosis serostatus and camp proportions of seropositive animals. Q-fever-seropositive blood samples were taken from 11 Arab camel and 4 Arab cattle breeders (seroprevalence 1%). Being a camel breeder was associated with Q-fever seropositivity in humans (OR=9). Camels had the highest Q-fever seroprevalence (80%) among livestock species. Although there was high-risk human behaviour for the acquisition of brucellosis and Q-fever from livestock through raw-milk consumption (98%) and contact with placentas of livestock (62%), we concluded that seroprevalences in humans were relatively low (likely due to limited active foci in livestock).
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Affiliation(s)
- E Schelling
- Swiss Tropical Institute, Socinstrasse 57, P.O. Box, CH-4002 Basel, Switzerland.
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Schelling E, Diguimbaye C, Daoud S, Nicolet J, Zinsstag J. [Seroprevalences of zoonotic diseases in nomads and their livestock in Chari-Baguirmi, Chad]. Med Trop (Mars) 2004; 64:474-7. [PMID: 15771017] [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: 05/02/2023]
Abstract
The seroprevalences of brucellosis and Q-fever were evaluated in humans and livestock in three Chadian nomadic communities, i.e., Fulani cattle breeders and Arab camel and cattle breeders. The survey was carried out in 1999 and 2000. The total number of human sera and animal sera tested were 911 and 1637, respectively, for antibodies against Brucella spp. and 368 and 613, respectively, for Coxiella burnetii. Sixteen brucellosis positive human sera resulted in a seroprevelance rate of 2%. Male participants were significantly more often brucellosis seropositive than females. No association was found between brucellosis serostatus and physical findings or reported symptoms. Positive brucellosis serology was more frequent in cattle (seroprevalence, 7%) than in camels (1.4%) and small ruminants (0.5%). Fifteen human sera from 11 Arab camel breeders and 4 Arab cattle breeders were positive for Q-fever (seroprevalence below 1%). Being a camel breeder was a significant risk factor for Q-fever seropositivity. Camels had the highest Q-fever seroprevalence (73%) among livestock species.
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Affiliation(s)
- E Schelling
- Institut Tropical Suisse, Département de la santé publique et d'épidémiologie, Bâle, Suisse.
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Lebeau B, Daoud S, Baud D, Giraud F, Chouaid C. 90 Iressa (zd 1839) dans le traitement des cancers bronchiques non à petites cellules (CBNPC) en échappement thérapeutique : étude observationnelle. Rev Mal Respir 2004. [DOI: 10.1016/s0761-8425(04)71716-7] [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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Bechir M, Schelling E, Wyss K, Daugla DM, Daoud S, Tanner M, Zinsstag J. [An innovative approach combining human and animal vaccination campaigns in nomadic settings of Chad: experiences and costs]. Med Trop (Mars) 2004; 64:497-502. [PMID: 15771021] [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: 05/02/2023]
Abstract
The purpose of this report is to describe a network of public health care workers, veterinarians and nomadic pastoralists that was set up in Chad to increase vaccination coverage to nomadic children and women who had rarely been vaccinated before. The objectives of the project were to provide human vaccination in conjunction with existing veterinary services, to evaluate the feasibility and limitations of such campaigns, to determine what other services could be provided concurrently, and to estimate the savings for public health care cases in comparison with carrying out vaccination separately. In a series of 12 vaccination campaigns in the Chari-Baguirmi and Kanem districts, more than 2100 children, 2100 women and 52000 cattle were fully immunized. These results confirmed the feasibility of joint campaigns in nomadic settings and provided important experience for improving organization. Information-Education-Communication (IEC) campaigns adapted to the realities of the pastoral setting were an important factor in mobilizing nomadic pastoralists for attendance at vaccination clinics. The savings in logistics costs (i.e., personnel, transportation and cold chain costs excluding vaccine costs) was 15% in Gredaya where 3 out of 6 campaigns were carried out together with veterinarians and 4% in Chaddra/Am Dobak where only 1 out of 6 campaigns was carried out in conjunction with veterinarians. The cost per fully immunized child (FIC) was considerably higher in Chaddra/Am Dobak than Gredaya (EUR 29.2 vs. EUR 11.5). The joint vaccination campaign approach is innovative, appreciated by nomadic pastoralists and less expensive than separate vaccination. By using the mobility of veterinarians in remote zones far from health care facilities, vaccination can be provided to nomadic children and women in countries with limited resources.
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Affiliation(s)
- M Bechir
- Centre de Support en Santé Internationale de l'Institut Tropical Suisse, N'Djaména, Tchad.
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Daugla DM, Daoud S, Tanner M, Zinsstag J, Schelling E. [Morbidity patterns in three nomadic communities in Chari-Baguirmi and Kanem, Chad]. Med Trop (Mars) 2004; 64:469-73. [PMID: 15771016] [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: 05/02/2023]
Abstract
Within the framework of an multidisciplinary research and action program, morbidity patterns were assessed in three nomadic communities, i.e., Fulani, Arab cattle breeders and Arab camel breeders, living in Chari-Baguirmi and Kanem, Chad. This is the first data about the health of Chadian nomadic pastoralists who account for approximately 6% of the total population. A total of 1092 women, men and children were interviewed and examined in the course of three surveys carried out by a physician during the dry and rainy season. Nomads reporting no health problems were rare. Tuberculosis was suspected in 4.6% of adults after clinical examination and bronchopulmonary disorders in children less than five years of age. Febrile diarrhea was more prevalent during the wet season when access to clean drinking water was more difficult. Simple malaria was rarely diagnosed in Arabs during the dry season. In contrast simple malaria was frequent in Fulani who stay in the vicinity of Lake Chad during the dry period. Protein-energy malnutrition was observed in only 3 of 328 children younger than 15 years of age.
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Affiliation(s)
- D M Daugla
- Centre de Support en Santé Internationale, N'Djamena, Tchad.
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Poli-Merol ML, Belouadah M, Parvy F, Chauvet P, Egreteau L, Daoud S. Tracheobronchial injury by blunt trauma in children: is emergency tracheobronchoscopy always necessary? Eur J Pediatr Surg 2003; 13:398-402. [PMID: 14743328 DOI: 10.1055/s-2003-44730] [Citation(s) in RCA: 19] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
PURPOSE To discuss the usefulness of CT scan in initial management of well tolerated tracheobronchial injuries and the place of tracheoscopy. METHODS We report our experience of three cases treated for tracheobronchial rupture resulting from three different mechanisms and review the literature. Three boys, aged 4 to 10 years, were referred to our institution for tracheobronchial rupture. Two of them presented with subcutaneous emphysema after a minor trauma, the third was a polytrauma referred after a severe car crash and was already intubated. We emphasise the importance of an initial CT scan, as this allowed us twice to confirm the tracheal wound prior to tracheoscopy. We discuss the necessity of performing a tracheoscopy in the case of a well tolerated lesion, as this procedure clearly worsened the ventilatory state in one of our cases. Moreover, one of our cases illustrates the fact that even a minor trauma can lead to life-threatening respiratory distress. All the lesions observed in our study were linear and were managed by thoracic drainage; they were then closely monitored and required no further surgical procedure. CONCLUSION Tracheobronchial rupture in children can result from minor cervical traumas and in such cases special attention must be paid to mild discomfort or subcutaneous emphysema on admission. Initial CT scan can be very helpful in visualising the level of the rupture and its consequences with respect to the pulmonary parenchyma. One can question the necessity for tracheoscopy in well tolerated lesion, as its results do not always improve the therapeutic outcome.
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Affiliation(s)
- M L Poli-Merol
- Department of Paediatric Surgery, American Memorial Hospital, Reims, France.
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Daoud S, Schinzel R, Neumann A, Loske C, Fraccarollo D, Diez C, Simm A. Advanced glycation endproducts: activators of cardiac remodeling in primary fibroblasts from adult rat hearts. Mol Med 2001; 7:543-51. [PMID: 11591890 PMCID: PMC1950065] [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: 02/21/2023] Open
Abstract
BACKGROUND Cardiovascular diseases are the leading cause of death in the Western world, especially in the elderly. Myocardial fibrosis induced by activated cardiac fibroblasts is thought to play a key role in the pathogenesis of cardiovascular disease. Accumulation of advanced glycation endproducts (AGEs), products of nonenzymatic glycation of proteins, correlate with the stiffness of the heart and large vessels. To elucidate a potential role of AGEs as a trigger of fibrosis, the effects of AGEs on primary fibroblasts from hearts of adult rats were investigated. MATERIAL AND METHODS The activation of intracellular signaling pathways was shown by Western blotting. In addition, the expression of genes of the extracellular matrix proteins, metalloproteases (MMPs), their inhibitors, and TGF-beta were analyzed by semiquantitative PCR. Activation of MMPs were controlled by Zymography. RESULTS It was shown that treatment of cardiac fibroblasts with AGEs leads to an activation of different signaling molecules, such as the p38MAP-kinase, the extracellular regulated kinases (ERKs), the jun kinase (JNK), as well as transcription factors like ATF-2 and NF-kappaB. In addition, the expression and activation of MMP-2, MMP-9, and MMP-13 were induced, which may be responsible for tissue remodeling followed by fibrosis. CONCLUSION Due to their effects on the expression and activation of metalloproteases, AGEs should be regarded as a potential therapeutic target for the prevention of pathologic remodeling.
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Affiliation(s)
- S Daoud
- Institut fuer Klinische Biochemie und Pathobiochemie, Würzburg, Germany
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