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Ahmed MA, Kamel EO, Abd-Eldayem AM. Role of cAMP/pCREB and GSK-3β/NF-κB p65 signaling pathways in the renoprotective effect of mirabegron against renal ischemia-reperfusion injury in rats. Eur J Pharmacol 2024; 974:176617. [PMID: 38679120 DOI: 10.1016/j.ejphar.2024.176617] [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: 03/01/2024] [Revised: 04/09/2024] [Accepted: 04/25/2024] [Indexed: 05/01/2024]
Abstract
Acute kidney injury and other renal disorders are thought to be primarily caused by renal ischemia-reperfusion (RIR). Cyclic adenosine monophosphate (cAMP) has plenty of physiological pleiotropic effects and preserves tissue integrity and functions. This research aimed to examine the potential protective effects of the β3-adrenergic receptors agonist mirabegron in a rat model of RIR and its underlying mechanisms. Male rats enrolled in this work were given an oral dose of 30 mg/kg mirabegron for two days before surgical induction of RIR. Renal levels of kidney injury molecule-1 (KIM-1), monocyte chemoattractant protein-1 (MCP-1), tumor necrosis factor-alpha (TNF-α), Interleukin-10 (IL-10), cAMP, cAMP-responsive element binding protein (pCREB), and glycogen synthase kinase-3 beta (GSK-3β) were assessed along with blood urea nitrogen and serum creatinine. Additionally, caspase-3 and nuclear factor-kappa B (NF-κB) p65 were explored by immunohistochemical analysis. Renal specimens were inspected for histopathological changes. RIR led to renal tissue damage with elevated blood urea nitrogen and serum creatinine levels. The renal KIM-1, MCP-1, TNF-α, and GSK-3β were significantly increased, while IL-10, cAMP, and pCREB levels were reduced. Moreover, upregulation of caspase-3 and NF-κB p65 protein expression was seen in RIR rats. Mirabegron significantly reduced kidney dysfunction, histological abnormalities, inflammation, and apoptosis in the rat renal tissues. Mechanistically, mirabegron mediated these effects via modulation of cAMP/pCREB and GSK-3β/NF-κB p65 signaling pathways. Mirabegron administration could protect renal tissue and maintain renal function against RIR.
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Affiliation(s)
- Marwa A Ahmed
- Department of Pharmacology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Esam O Kamel
- Department of Medical Histology and Cell Biology, Faculty of Medicine, Al-Azhar University, Assiut Branch, Assiut, Egypt
| | - Ahmed M Abd-Eldayem
- Department of Pharmacology, Faculty of Medicine, Assiut University, Assiut, Egypt; Department of Pharmacology, Faculty of Medicine, Merit University, Sohag, Egypt.
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Ahmed MA, Hessz D, Gyarmati B, Páncsics M, Kovács N, Gyurcsányi RE, Kubinyi M, Horváth V. A generic approach based on long-lifetime fluorophores for the assessment of protein binding to polymer nanoparticles by fluorescence anisotropy. Nanoscale 2024; 16:3659-3667. [PMID: 38287773 DOI: 10.1039/d3nr02460a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2024]
Abstract
Quantitation of protein-nanoparticle interactions is essential for the investigation of the protein corona around NPs in vivo and when using synthetic polymer nanoparticles as affinity reagents for selective protein recognition in vitro. Here, a method based on steady-state fluorescence anisotropy measurement is presented as a novel, separation-free tool for the assessment of protein-nanoparticle interactions. For this purpose, a long-lifetime luminescent Ru-complex is used for protein labelling, which exhibits low anisotropy when conjugated to the protein but displays high anisotropy when the proteins are bound to the much larger polymer nanoparticles. As a proof of concept, the interaction of lysozyme with poly(N-isopropylacrylamide-co-N-tert-butylacrylamide-co-acrylic acid) nanoparticles is studied, and fluorescence anisotropy measurements are used to establish the binding kinetics, binding isotherm and a competitive binding assay.
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Affiliation(s)
- Marwa A Ahmed
- Department of Inorganic and Analytical Chemistry, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary.
- Department of Chemistry, Faculty of Science, Arish University, 45511 El-Arish, North Sinai, Dahyet El Salam, Egypt
| | - Dóra Hessz
- Department of Physical Chemistry and Materials Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary
- MTA-BME "Lendület" Quantum Chemistry Research Group, Műegyetem rkp. 3., H-1111 Budapest, Hungary
| | - Benjámin Gyarmati
- Department of Physical Chemistry and Materials Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary
| | - Mirkó Páncsics
- Department of Inorganic and Analytical Chemistry, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary.
| | - Norbert Kovács
- Department of Inorganic and Analytical Chemistry, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary.
| | - Róbert E Gyurcsányi
- Department of Inorganic and Analytical Chemistry, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary.
- MTA-BME "Lendület" Chemical Nanosensors Research Group, Műegyetem rkp. 3., H-1111 Budapest, Hungary
- ELKH-BME Computation Driven Chemistry Research Group, Műegyetem rkp. 3., H-1111 Budapest, Hungary
| | - Miklós Kubinyi
- Department of Physical Chemistry and Materials Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary
| | - Viola Horváth
- Department of Inorganic and Analytical Chemistry, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary.
- ELKH-BME Computation Driven Chemistry Research Group, Műegyetem rkp. 3., H-1111 Budapest, Hungary
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Al-Qaysi ZT, Albahri AS, Ahmed MA, Mohammed SM. Development of hybrid feature learner model integrating FDOSM for golden subject identification in motor imagery. Phys Eng Sci Med 2023; 46:1519-1534. [PMID: 37603133 DOI: 10.1007/s13246-023-01316-6] [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: 08/13/2022] [Accepted: 08/01/2023] [Indexed: 08/22/2023]
Abstract
Brain-computer interfaces (BCIs) based on motor imagery (MI) face challenges due to the complex nature of brain activity, nonstationary and high-dimensional properties, and individual variations in motor behaviour. The identification of a consistent "golden subject" in MI-based BCIs remains an open challenge, complicated by multiple evaluation metrics and conflicting trade-offs, presenting complex Multi-Criteria Decision Making (MCDM) problems. This study proposes a hybrid brain signal decoding model called Hybrid Adaboost Feature Learner (HAFL), which combines feature extraction and classification using VGG-19, STFT, and Adaboost classifier. The model is validated using a pre-recorded MI-EEG dataset from the BCI competition at Graz University. The fuzzy decision-making framework is integrated with HAFL to allocate a golden subject for MI-BCI applications through the Golden Subject Decision Matrix (GSDM) and the Fuzzy Decision by Opinion Score Method (FDOSM). The effectiveness of the HAFL model in addressing inter-subject variability in EEG-based MI-BCI is evaluated using an MI-EEG dataset involving nine subjects. Comparing subject performance fairly is challenging due to complexity variations, but the FDOSM method provides valuable insights. Through FDOSM-based External Group Aggregation (EGA), subject S5 achieves the highest score of 2.900, identified as the most promising golden subject for subject-to-subject transfer learning. The proposed methodology is compared against other benchmark studies from various key perspectives and exhibits significant novelty in several aspects. The findings contribute to the development of more robust and effective BCI systems, paving the way for advancements in subject-to-subject transfer learning for BCI-MI applications.
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Affiliation(s)
- Z T Al-Qaysi
- Department of Computer Science, Computer Science and Mathematics College, Tikrit University, Tikrit, Iraq
| | - A S Albahri
- Iraqi Commission for Computers and Informatics (ICCI), Baghdad, Iraq.
| | - M A Ahmed
- Department of Computer Science, Computer Science and Mathematics College, Tikrit University, Tikrit, Iraq
| | - Saleh Mahdi Mohammed
- Department of Computer Technology Engineering, College of Information Technology, Imam Ja'afar Al-Sadiq University, Baghdad, Iraq
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Sanad MF, Shalan AE, Ahmed MA, Messih MFA. Expression of Concern: The controlled synthesis and DFT investigation of novel (0D)-(3D) ZnS/SiO 2 heterostructures for photocatalytic applications. RSC Adv 2023; 13:32972. [PMID: 38025881 PMCID: PMC10631256 DOI: 10.1039/d3ra90114a] [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: 11/02/2023] [Accepted: 11/02/2023] [Indexed: 12/01/2023] Open
Abstract
Expression of Concern for 'The controlled synthesis and DFT investigation of novel (0D)-(3D) ZnS/SiO2 heterostructures for photocatalytic applications' by Mohamed F. Sanad et al., RSC Adv., 2021, 11, 22352-22364, https://doi.org/10.1039/D1RA02284A.
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Affiliation(s)
- Mohamed F Sanad
- Chemistry Department, Faculty of Science, Ain Shams University Egypt
- Department of Chemistry, Department of Environmental Sciences and Engineering, University of Texas at El Paso 500 West University Avenue El Paso Texas 79968 USA
| | - Ahmed Esmail Shalan
- Central Metallurgical Research and Development Institute (CMRDI) P.O. Box 87 Helwan Cairo 11422 Egypt
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, Martina Casiano, UPV/EHU Science Park Barrio Sarriena s/n Leioa 48940 Spain
| | - M A Ahmed
- Chemistry Department, Faculty of Science, Ain Shams University Egypt
| | - M F Abdel Messih
- Chemistry Department, Faculty of Science, Ain Shams University Egypt
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Eljack MMF, Ahmed FMT, Hasabo EA, Alfatih M, Ahmed KAHM, Elnaiem W, Mohamed MTA, Ahmed A, Hamood FMM, Hajhamd AAI, Ahmed RMM, Mansoor AFAB, Ahmed EM, Eisa YMEA, Taha NYM, Ahmed ME, Alnour AAD, Tayfour DOA, Mohammed LM, Ahmed EAZE, Tajeldeen S, Abdelrasoul MA, Balla IMM, Fadl HAO, Ahmed TAH, Yousif A, Abdulrazique QA, Sabri M, Dafalla HN, Alrahaman MF, Mohamed FRG, Ahmed AMOB, Alrabee NHK, Elbannan Elhassan Mohamed Ali M, Ali MM, Ibrahim AAA, A Wahaballah A, Elbagir M, Alkhier EA, Ahmed MA, Mustafa A, Altigany AK, Elaagib A, Almakey Y, Altayeb IKM, Humida G, Mohamed MHA, Ali ATM, Ahmed OMM. The educational value of ward rounds as a learning and teaching opportunity for house officers, medical officers, and registrars in Sudanese hospitals: a multi-center cross-sectional study. BMC Med Educ 2023; 23:426. [PMID: 37291568 DOI: 10.1186/s12909-023-04404-z] [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] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 05/26/2023] [Indexed: 06/10/2023]
Abstract
BACKGROUND Ward rounds are a cornerstone in the educational experience of junior doctors and an essential part of teaching patient care. Here, we aimed to assess the doctors' perception of ward rounds as an educational opportunity and to identify the obstacles faced in conducting a proper ward round in Sudanese hospitals. METHOD A cross-sectional study was conducted from the 15th to the 30th of January 2022 among house officers, medical officers, and registrars in about 50 teaching and referral hospitals in Sudan. House officers and medical officers were considered the learners, while specialist registrars were considered the teachers. Doctors' perceptions were assessed using an online questionnaire, with a 5-level Likert scale to answer questions. RESULTS A total of 2,011 doctors participated in this study (882 house officers, 697 medical officers, and 432 registrars). The participants were aged 26.9 ± 3.2 years, and females constituted about 60% of the sample. An average of 3.1 ± 6.8 ward rounds were conducted per week in our hospitals, with 11.1 ± 20.3 h spent on ward rounds per week. Most doctors agreed that ward rounds are suitable for teaching patient management (91.3%) and diagnostic investigations (89.1%). Almost all the doctors agreed that being interested in teaching (95.1%) and communicating appropriately with the patients (94.7%) make a good teacher in ward rounds. Furthermore, nearly all the doctors agreed that being interested in learning (94.3%) and communicating appropriately with the teacher (94.5%) make a good student on ward rounds. About 92.8% of the doctors stated that the quality of ward rounds could be improved. The most frequently reported obstacles faced during ward rounds were the noise (70%) and lack of privacy (77%) in the ward environment. CONCLUSION Ward rounds have a special value in teaching patient diagnosis and management. Being interested in teaching/learning and having good communication skills were the two major criteria that make a good teacher/learner. Unfortunately, ward rounds are faced with obstacles related to the ward environment. It is mandatory to ensure the quality of both ward rounds' teaching and environment to optimize the educational value and subsequently improve patient care practice.
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Affiliation(s)
| | | | | | - Mohammed Alfatih
- Faculty of Medicine, University of Alzaiem Alazhari, Khartoum, Sudan
| | | | - Walaa Elnaiem
- Faculty of Medicine, University of Khartoum, Khartoum, Sudan
| | | | - Alaa Ahmed
- Faculty of Medicine, University of Khartoum, Khartoum, Sudan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Hiba Awadelkareem Osman Fadl
- Department of Haematology, Faculty of Medical Laboratory Sciences, AL-Neelain University, Khartoum, Sudan
- Department of Medical Laboratory, Sudanese Medical Research Association, Khartoum, Sudan
| | | | - Abdalla Yousif
- Faculty of Medicine, University of Red Sea, Port Sudan, Sudan
| | | | - Mohammed Sabri
- Faculty of Medicine, Omdurman Islamic University, Khartoum, Sudan
- Department of Physiology, Omdurman Islamic University, Khartoum, Sudan
| | | | | | | | | | | | | | - Monia Mukhtar Ali
- Faculty of Medicine, University of Alzaiem Alazhari, Khartoum, Sudan
| | | | | | - Mohammed Elbagir
- Faculty of Medicine, University of Alzaiem Alazhari, Khartoum, Sudan
| | | | - M A Ahmed
- Faculty of Medicine, University of Dongola, Dongola, Sudan
| | - Alamin Mustafa
- Faculty of Medicine, University of ALNeelain, Khartoum, Sudan
| | | | - Amna Elaagib
- Faculty of Medicine, Omdurman Alahlia University, Om Durman, Sudan
| | - Yahya Almakey
- Faculty of Medicine, Alribat National University, Khartoum, Sudan
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Alsulmi A, Mohammed NN, Soltan A, Messih MFA, Ahmed MA. Engineering S-scheme CuO/ZnO heterojunctions sonochemically for eradicating RhB dye from wastewater under solar radiation. RSC Adv 2023; 13:13269-13281. [PMID: 37124000 PMCID: PMC10141968 DOI: 10.1039/d3ra00924f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 04/10/2023] [Indexed: 05/02/2023] Open
Abstract
In this research, S-scheme heterojunctions composed of different concentrations of CuO and ZnO nanoparticles are fabricated for eradicating rhodamine B dye under solar radiation. ZnO nanoparticles are designed through a facile sol-gel route employing Triton X-100. Spherical CuO nanoparticles of 15.2 nm and 1.5 eV band gap energy are deposited on ZnO nanoparticles in an ultrasonic bath of 300 W intensity. The physicochemical performance of the photocatalyst is explored by HRTEM, SAED, BET, XRD, DRS and PL. The in situ homogeneous growth of spherical CuO nanoparticles on ZnO active centers shifts the photocatalytic response to the deep visible region and enhances the efficiency of charge carrier separation and transportation. Among all heterojunctions, ZnCu10 containing 10 wt% CuO displays the best photocatalytic rate for expelling 93% of RhB dye within 240 min, which is twenty-fold higher than that of pristine ZnO and CuO. Reactive oxygen species are the predominant species in degrading the dye pollutant on the heterojunction surface, as shown from scrubber trapping experiments and PL spectrum of terephthalic acid. Coupling ZnO as an oxidative photocatalyst and CuO as a reductive photocatalyst generates an efficient S-scheme heterojunction with strong redox power in destructing various organic pollutants.
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Affiliation(s)
- Ali Alsulmi
- Department of Chemistry, College of Science, King Saud University Riyadh Saudi Arabia
| | - Nagy N Mohammed
- Department of Chemistry, Faculty of Science, Ain Shams University Abbassia Cairo 11566 Egypt +20 224831836 +20 103979568
| | - Ayman Soltan
- Department of Chemistry, Faculty of Science, Ain Shams University Abbassia Cairo 11566 Egypt +20 224831836 +20 103979568
- Department of Chemistry, University of York York YO10 5DD UK
| | - M F Abdel Messih
- Department of Chemistry, Faculty of Science, Ain Shams University Abbassia Cairo 11566 Egypt +20 224831836 +20 103979568
| | - M A Ahmed
- Department of Chemistry, Faculty of Science, Ain Shams University Abbassia Cairo 11566 Egypt +20 224831836 +20 103979568
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Alsulmi A, Shaker MH, Basely AM, Abdel-Messih MF, Sultan A, Ahmed MA. Engineering S-scheme Ag 2CO 3/g-c 3N 4 heterojunctions sonochemically to eradicate Rhodamine B dye under solar irradiation. RSC Adv 2023; 13:12229-12243. [PMID: 37091619 PMCID: PMC10113822 DOI: 10.1039/d3ra00173c] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 03/11/2023] [Indexed: 04/25/2023] Open
Abstract
The use of natural solar radiation is a low-cost significant technology for water pollution remediation and production of clean energy. In this work, S-scheme Ag2CO3/g-C3N4 heterojunctions were engineered for carefully eradicating Rhodamine B dye under natural sunlight irradiation. Solid thermal decomposition reactions generate g-C3N4 sheets by annealing urea at 520 °C. Ag2CO3 nanoparticles are directed and localized sonochemically to the active centers of g-C3N4 sheets. The physicochemical properties of the solid specimen were determined by PL, DRS, XRD, HRTEM, mapping, EDX, N2-adsorption-desorption isotherm and XPS analyses. As elucidated by HRTEM, PL and DRS analyses, 5 wt% of spherical Ag2CO3 nanoparticles deposited on the g-C3N4 sheet surface and nearly equidistant from each other elevate the electron-hole separation efficiency and broaden the absorption capacity of photocatalysts. Rhodamine B dye was degraded at a rate of 0.0141 min-1 by heterojunctions containing 5 wt% Ag2CO3 and 95 wt% g-C3N4, which is three-fold higher than that on pristine g-C3N4 nanosheets. Free radical scrubber experiments revealed the contribution of charge carriers and reactive oxygen species to the decomposition of RhB dye with a preferential role of positive holes and superoxide species. PL measurements of terephthalic acid and scrubber trapping experiments provide confirmatory evidence for charge diffusion via the S-scheme mechanism that accounts for the production of electron-hole pairs with strong redox power. This novel research work is contributory to manipulate the S-scheme heterojunction for efficient and low-cost wastewater treatment under natural solar irradiation.
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Affiliation(s)
- Ali Alsulmi
- Department of Chemistry, College of Science, King Saud University P.O.2455 Riyadh 11451 Saudi Arabia
| | - Mohamed H Shaker
- Chemistry Department, Faculty of Science, Ain Shams University Egypt
| | - Abanoob M Basely
- Chemistry Department, Faculty of Science, Ain Shams University Egypt
| | - M F Abdel-Messih
- Chemistry Department, Faculty of Science, Ain Shams University Egypt
| | - Ayman Sultan
- Department of Chemistry, University of York York YO10 5DD UK
| | - M A Ahmed
- Chemistry Department, Faculty of Science, Ain Shams University Egypt
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Tahir A, Ur-Rehman Qazi F, Choudhry Z, Musheer U, Amin M, Malik S, AlMokhatieb AA, Almadi K, Alkahtany MF, Ahmed MA, Ali K, Vohra F, Abduljabbar T. Influence of Sapindus mukorossi extract in comparison to 17% EDTA as final root canal irrigant on the sealer penetration and microleakage of dentinal tubules. Eur Rev Med Pharmacol Sci 2023; 27:2724-2732. [PMID: 37070870 DOI: 10.26355/eurrev_202304_31899] [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: 04/19/2023]
Abstract
OBJECTIVE The study evaluated the effect of Sapindus mukorossi (SM) extract as a final root canal irrigant on sealer penetration (SP) in dentinal tubules and microleakage. MATERIALS AND METHODS Samples were selected based on inclusion and exclusion criteria. An access opening in all samples was performed and the working length was decided using pro taper for canal finishing along with constant irrigation. Specimens were randomly divided into 3 groups. Group 1 was irrigated with 3 ml of 17% EDTA; group 2 was irrigated with SM irrigant and group 3 samples were irrigated with 0.9% saline. After obturation, samples were vertically placed in 1% methylene blue dye cut in half longitudinally, and viewed under a stereomicroscope. Analysis of SP in the dentinal tubule was assessed using scanning electron microscopy (SEM). For microleakage assessment, mean and standard deviation were reported and One-Way ANOVA was applied. SP was compared using Kruskal-Wallis' test. For inspecting the interaction between SM/EDTA and NaOCl, Fisher's exact test was applied. No statistically significant difference between microleakage in any of the tested groups was observed. The control group showed minimum leakage as compared to EDTA and SM. RESULTS The results displayed that there was no significant difference, (p=0.67), between dentinal tubule SP at 2 mm. A significant difference between dentinal tubule SP among groups at 5 mm was observed (p<0.05). CONCLUSIONS SM ethanolic extract showed comparable outcomes of smear layer removal and sealer penetration to 17% EDTA, as a final irrigant in root canal cleaning. Therefore, SM has the potential to be used as an adjuvant final irrigant in conjunction with NaOCl.
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Affiliation(s)
- A Tahir
- Department of Operative Dentistry, Dr. Ishrat-Ul-Ebad Khan Institute of Oral Health Sciences, Dow University of Health Sciences, Karachi, Pakistan.
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Hassanein EHM, Ahmed MA, Sayed AM, Rashwan EK, El‐Ghafar OAMA, Mahmoud AM. Correction: Hassanein EHM, Ahmed MA, Sayed AM, Rashwan EK, Abd El‐Ghafar OAM, Mahmoud AM. Edaravone mitigates hemorrhagic cystitis by modulating Nrf2, TLR‐4/NF‐κB, and JAK1/STAT3 signaling in cyclophosphamide‐intoxicated rats. J Biochem Mol Toxicol. 2021 Nov;35(11):E22889. J Biochem Mol Toxicol 2022; 36:e23253. [DOI: 10.1002/jbt.23253] [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: 10/08/2022] [Accepted: 10/18/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Emad H. M. Hassanein
- Department of Pharmacology and Toxicology, Faculty of Pharmacy Al‐Azhar University Assiut Egypt
| | - Marwa A. Ahmed
- Department of Pharmacology, Faculty of Medicine Assiut University Assiut Egypt
| | - Ahmed M. Sayed
- Biochemistry Laboratory, Chemistry Department, Faculty of Science Assiut University Assiut Egypt
| | - Eman K. Rashwan
- Department of Physiology, College of Medicine Jouf University Sakaka Saudi Arabia
- Department of Physiology, College of Medicine Al‐Azhar University Assiut Egypt
| | | | - Ayman M. Mahmoud
- Physiology Division, Zoology Department, Faculty of Science Beni‐Suef University Beni‐Suef Egypt
- Biotechnology Department, Research Institute of Medicinal and Aromatic Plants Beni‐Suef University Beni‐Suef Egypt
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Ahmed MA, Sohns C, Rudolph V, Dumitrescu D, Faber L, Fox H. Mechanical dyssynchrony, a novel marker to predict long-term survival in patients with cardiac resynchronization. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.729] [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] Open
Abstract
Abstract
Background
Cardiac resynchronization therapy (CRT) is an established therapy in patients with symptomatic heart failure with reduced left ventricular ejection fraction (LVEF <35%) (HFrEF) that have conduction disturbances as measured by prolonged QRS duration of >130 ms. Mechanical dyssynchrony (MD) in echocardiography has not proven benefit to determine CRT indication, but is hypothesized to be of predictive value. Both MD aspects of “apical rocking” (AR) but also “septal flash” (SF) have been shown to be a predictive value in short- and medium-term follow-up in CRT, but no trial has tested long-term effects yet.
Purpose
This study investigated the impact of AR and SF on long-term survival in CRT recipients.
Methods and results
425 HFrEF patients (mean age: 63.0±10.6 years, 72.3% male, 60.7% non-ischemic etiology) with ESC guideline-derived CRT indication have been implanted and additionally investigated for MD markers at baseline as well as after a 11.5±8.0 months follow-up including long-term survival. Herein AR and/or SF were identified in 307 (72,2%) participants at baseline. During follow-up both AR and/or SF disappeared in 256 (83.4%) patients through CRT use. The overall mean survival was 95.9±52.9 months. Univariable analysis showed beneficial survival for women over men (109.1±52.4 vs. 90.9±52.4 months; p<0.001). Moreover, younger (<60 years) patients profit more than older patients (110.6±53.7 vs. 88.6±51.1 months; p<0.001). Interestingly, patients with MD markers at baseline generally had an improved overall survival (106.2±52.0 vs. 68.9±45.4 months; p<0.001), and in addition to that we found the best survival in patients with disappeared over persisting mechanical dyssynchrony echocardiography parameters in CRT (111.6±51.2 vs. 79.7±47.6 months p<0.001). Multivariate analysis shows age and presence of MD at baseline to be powerful predictors for long-term survival in CRT HFrEF patients (Figures 1 and 2).
Conclusion
Novel echocardiography MD parameters before CRT implantation predict long-term survival. Moreover, long-term survival even further improves when AR and/or SF disappear through CRT in HFrEF. Our results encourage a prospective, randomized, controlled, multicenter trial to study clinical implementation of MD in CRT patients.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- M A Ahmed
- Herz- und Diabeteszentrum NRW, Ruhr-Universität Bochum, Clinic for General and Interventional Cardiology/Angiology , Bad Oeynhausen , Germany
| | - C Sohns
- Herz- und Diabeteszentrum NRW, Ruhr-Universitaet Bochum, Clinic for Electrophysiology , Bad Oeynhausen , Germany
| | - V Rudolph
- Herz- und Diabeteszentrum NRW, Ruhr-Universität Bochum, Clinic for General and Interventional Cardiology/Angiology , Bad Oeynhausen , Germany
| | - D Dumitrescu
- Herz- und Diabeteszentrum NRW, Ruhr-Universität Bochum, Clinic for General and Interventional Cardiology/Angiology , Bad Oeynhausen , Germany
| | - L Faber
- Herz- und Diabeteszentrum NRW, Ruhr-Universität Bochum, Clinic for General and Interventional Cardiology/Angiology , Bad Oeynhausen , Germany
| | - H Fox
- Herz- und Diabeteszentrum NRW, Ruhr-Universität Bochum, Clinic for General and Interventional Cardiology/Angiology , Bad Oeynhausen , Germany
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Ahmed MA, Islam MA. Outcome of Reduction of Subcondylar Fracture in Retromandibular Transparotid Approach. Mymensingh Med J 2022; 31:931-936. [PMID: 36189535] [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: 06/16/2023]
Abstract
Among all mandibular fracture 25.0 to 40.0% fractures are regarded as condylar and subcondylar fracture. Commonly, reduction of subcondylar fracture is done under general anaesthesia. Different approaches were found for the surgical treatment of condylar fractures besides intraoral approaches such as the pre-auricular, submandibular, rhytidectomy, retromandibular. This is a prospective observational study which was performed to find out the outcome of retromandibular approach for subcondylar fracture treatment of mandible i.e. to find out correction of occlusion and establishment of jaw function, infection, hematoma, salivary fistula, facial nerve damage, haematoma etc complication. Surgical treatment of subcondylar fractures of 15 patients was done in Dhaka Dental College and Hospital and different private centres in Dhaka and Mymensingh, Bangladesh from January 2019 to December 2021 in retromandibular transparortid approach. The patients were evaluated for hematoma, infection, Frey's syndrome, salivary fistula, facial nerve damage, occlusion, fracture site stability, chronic pain in the fracture site and temporomandibular joint movements in the post operative period. Facial nerve injury was not observed. Postoperative swelling of parotid region developed in first two patients. Single patient developed paresis in zygomatic branch of facial nerve causing left upper eyelid muscle weak and after two weeks of physiotherapy it became normal. Salivary fistula developed in three patients which resolved spontaneously. Outcome of this approach like good anatomy and function was found in all cases. Good articular function was obtained in all the cases. By this retromandibular approach condylar fracture reduction; fixation and healing were managed comfortably. However, direct vision of facial nerve fibres has limited the risk of facial nerve injury.
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Affiliation(s)
- M A Ahmed
- Dr Mohammed Ayaz Ahmed, Assistant Professor (Oral & Maxillofacial Surgery), Dental Unit, Mymensingh Medical College, Mymensingh, Bangladesh; E-mail:
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12
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Albahri AS, Albahri OS, Zaidan AA, Alnoor A, Alsattar HA, Mohammed R, Alamoodi AH, Zaidan BB, Aickelin U, Alazab M, Garfan S, Ahmaro IYY, Ahmed MA. Integration of fuzzy-weighted zero-inconsistency and fuzzy decision by opinion score methods under a q-rung orthopair environment: A distribution case study of COVID-19 vaccine doses. Comput Stand Interfaces 2022; 80:103572. [PMID: 34456503 PMCID: PMC8386109 DOI: 10.1016/j.csi.2021.103572] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 08/14/2021] [Accepted: 08/22/2021] [Indexed: 05/26/2023]
Abstract
Owing to the limitations of Pythagorean fuzzy and intuitionistic fuzzy sets, scientists have developed a distinct and successive fuzzy set called the q-rung orthopair fuzzy set (q-ROFS), which eliminates restrictions encountered by decision-makers in multicriteria decision making (MCDM) methods and facilitates the representation of complex uncertain information in real-world circumstances. Given its advantages and flexibility, this study has extended two considerable MCDM methods the fuzzy-weighted zero-inconsistency (FWZIC) method and fuzzy decision by opinion score method (FDOSM) under the fuzzy environment of q-ROFS. The extensions were called q-rung orthopair fuzzy-weighted zero-inconsistency (q-ROFWZIC) method and q-rung orthopair fuzzy decision by opinion score method (q-ROFDOSM). The methodology formulated had two phases. The first phase 'development' presented the sequential steps of each method thoroughly.The q-ROFWZIC method was formulated and used in determining the weights of evaluation criteria and then integrated into the q-ROFDOSM for the prioritisation of alternatives on the basis of the weighted criteria. In the second phase, a case study regarding the MCDM problem of coronavirus disease 2019 (COVID-19) vaccine distribution was performed. The purpose was to provide fair allocation of COVID-19 vaccine doses. A decision matrix based on an intersection of 'recipients list' and 'COVID-19 distribution criteria' was adopted. The proposed methods were evaluated according to systematic ranking assessment and sensitivity analysis, which revealed that the ranking was subject to a systematic ranking that is supported by high correlation results over different scenarios with variations in the weights of criteria.
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Affiliation(s)
- A S Albahri
- Department of Computing, Faculty of Arts, Computing and Creative Industry, Universiti Pendidikan Sultan Idris, Tanjung Malim 35900, Malaysia
- Informatics Institute for Postgraduate Studies (IIPS), Iraqi Commission for Computers and Informatics (ICCI), Baghdad, Iraq
| | - O S Albahri
- Department of Computing, Faculty of Arts, Computing and Creative Industry, Universiti Pendidikan Sultan Idris, Tanjung Malim 35900, Malaysia
| | - A A Zaidan
- Department of Computing, Faculty of Arts, Computing and Creative Industry, Universiti Pendidikan Sultan Idris, Tanjung Malim 35900, Malaysia
| | - Alhamzah Alnoor
- School of Management, Universiti Sains Malaysia, Pulau Pinang, Malaysia
| | - H A Alsattar
- Department of Computing, Faculty of Arts, Computing and Creative Industry, Universiti Pendidikan Sultan Idris, Tanjung Malim 35900, Malaysia
| | - Rawia Mohammed
- Department of Computing, Faculty of Arts, Computing and Creative Industry, Universiti Pendidikan Sultan Idris, Tanjung Malim 35900, Malaysia
| | - A H Alamoodi
- Department of Computing, Faculty of Arts, Computing and Creative Industry, Universiti Pendidikan Sultan Idris, Tanjung Malim 35900, Malaysia
| | - B B Zaidan
- Department of Computing, Faculty of Arts, Computing and Creative Industry, Universiti Pendidikan Sultan Idris, Tanjung Malim 35900, Malaysia
| | - Uwe Aickelin
- School of Computing and Information Systems, University of Melbourne, 700 Swanston Street, Victoria 3010 Australia
| | - Mamoun Alazab
- College of Engineering, IT and Environment, Charles Darwin University, NT, Australia
| | - Salem Garfan
- Department of Computing, Faculty of Arts, Computing and Creative Industry, Universiti Pendidikan Sultan Idris, Tanjung Malim 35900, Malaysia
| | - Ibraheem Y Y Ahmaro
- Computer Science Department, College of Information Technology, Hebron University, Hebron, Palestine
| | - M A Ahmed
- Department of Computer Science, Computer Science and Mathematics College, Tikrit University, Tikrit, Iraq
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13
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Banik R, Uddin MW, Asaduzzaman M, Ahmed MA. Effect of Application of Platelet-Rich Plasma on Bone Regeneration after Removal of Jaw Cysts. Mymensingh Med J 2022; 31:107-111. [PMID: 34999688] [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: 06/14/2023]
Abstract
Platelets are involved in regeneration at sites of bony defect, apart from their function in coagulation. An autologous preparation platelet-rich plasma gel applied to sites of bony defects after surgical treatment of jaw cyst. This case-control study was conducted in Bangabandhu Sheikh Mujib Medical University (BSMMU) in the department of Oral and Maxillofacial Surgery from September 2017 to August 2018. Total 30 patients were chosen having jaw cyst. They were divided into 2 groups; Group A and Group B, where Group A got the platelet rich plasma, after removal of the cystic lesion; and Group B got the normal usual treatment. Platelet rich plasma gel was prepared using a standardized technique and applied to the surgical site of the Group A. The differences of radiographic changes between the two groups at 6th, 12th, 18th and 24th weeks after surgery were analyzed. Study showed significant changes in early bone regeneration in group A at 12th and 18th weeks post operatively. Platelet rich plasma induces early bone regeneration and it has proven successful outcome.
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Affiliation(s)
- R Banik
- Dr Ruman Banik, Medical Officer, Department of Oral and Maxillofacial Surgery, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh; E-mail:
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14
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Alamoodi AH, Zaidan BB, Al-Masawa M, Taresh SM, Noman S, Ahmaro IYY, Garfan S, Chen J, Ahmed MA, Zaidan AA, Albahri OS, Aickelin U, Thamir NN, Fadhil JA, Salahaldin A. Multi-perspectives systematic review on the applications of sentiment analysis for vaccine hesitancy. Comput Biol Med 2021; 139:104957. [PMID: 34735945 PMCID: PMC8520445 DOI: 10.1016/j.compbiomed.2021.104957] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [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: 08/20/2021] [Revised: 10/15/2021] [Accepted: 10/15/2021] [Indexed: 01/04/2023]
Abstract
A substantial impediment to widespread Coronavirus disease (COVID-19) vaccination is vaccine hesitancy. Many researchers across scientific disciplines have presented countless studies in favor of COVID-19 vaccination, but misinformation on social media could hinder vaccination efforts and increase vaccine hesitancy. Nevertheless, studying people's perceptions on social media to understand their sentiment presents a powerful medium for researchers to identify the causes of vaccine hesitancy and therefore develop appropriate public health messages and interventions. To the best of the authors' knowledge, previous studies have presented vaccine hesitancy in specific cases or within one scientific discipline (i.e., social, medical, and technological). No previous study has presented findings via sentiment analysis for multiple scientific disciplines as follows: (1) social, (2) medical, public health, and (3) technology sciences. Therefore, this research aimed to review and analyze articles related to different vaccine hesitancy cases in the last 11 years and understand the application of sentiment analysis on the most important literature findings. Articles were systematically searched in Web of Science, Scopus, PubMed, IEEEXplore, ScienceDirect, and Ovid from January 1, 2010, to July 2021. A total of 30 articles were selected on the basis of inclusion and exclusion criteria. These articles were formed into a taxonomy of literature, along with challenges, motivations, and recommendations for social, medical, and public health and technology sciences. Significant patterns were identified, and opportunities were promoted towards the understanding of this phenomenon.
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Affiliation(s)
- A H Alamoodi
- Department of Computing, Faculty of Arts, Computing and Creative Industry, Universiti Pendidikan Sultan Idris (UPSI), Perak, Malaysia.
| | - B B Zaidan
- Future Technology Research Center, College of Future, National Yunlin University of Science and Technology, 123 University Road, Section 3, Douliou, Yunlin 64002, Taiwan, ROC
| | - Maimonah Al-Masawa
- Centre for Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, 56000, Kuala Lumpur, Malaysia
| | - Sahar M Taresh
- Department of Kindergarten Educational Psychology, Taiz University, Yemen
| | - Sarah Noman
- Department of Community Health, Faculty of Medicine & Health Sciences, Universiti Putra Malaysia, Malaysia
| | - Ibraheem Y Y Ahmaro
- Computer Science Department, College of Information Technology, Hebron University, Hebron, Palestine
| | - Salem Garfan
- Department of Computing, Faculty of Arts, Computing and Creative Industry, Universiti Pendidikan Sultan Idris (UPSI), Perak, Malaysia
| | - Juliana Chen
- The University of Sydney, Charles Perkins Centre, Discipline of Nutrition and Dietetics, School of Life and Environmental Sciences, Camperdown, New South Wales, Australia; Department of Clinical Medicine, Faculty of Medicine and Health Sciences, Macquarie University, Australia; Healthy Weight Clinic, MQ Health, Macquarie University Hospital, Australia
| | - M A Ahmed
- Computer Science and Mathematics College, Tikrit University, Iraq
| | - A A Zaidan
- Department of Computing, Faculty of Arts, Computing and Creative Industry, Universiti Pendidikan Sultan Idris (UPSI), Perak, Malaysia
| | - O S Albahri
- Department of Computing, Faculty of Arts, Computing and Creative Industry, Universiti Pendidikan Sultan Idris (UPSI), Perak, Malaysia
| | - Uwe Aickelin
- School of Computing and Information Systems, University of Melbourne, 700 Swanston Street, Victoria, 3010, Australia
| | - Noor N Thamir
- Department of Computer Science, University of Baghdad, Iraq
| | - Julanar Ahmed Fadhil
- Faculty of Computer Science and Information Technology, Universiti Putra Malaysia (UPM), 43400 Serdang, Malaysia
| | - Asmaa Salahaldin
- College of Graduate Studies, Universiti Tenaga Nasional (UNITEN), Kajang, Selangor, Malaysia
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15
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Ahmed MA, Erdőssy J, Horvath V. Temperature-Responsive Magnetic Nanoparticles for Bioanalysis of Lysozyme in Urine Samples. Nanomaterials (Basel) 2021; 11:3015. [PMID: 34835779 PMCID: PMC8618479 DOI: 10.3390/nano11113015] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 11/02/2021] [Accepted: 11/05/2021] [Indexed: 12/26/2022]
Abstract
Highly selective multifunctional magnetic nanoparticles containing a thermoresponsive polymer shell were developed and used in the sample pretreatment of urine for the assessment of lysozymuria in leukemia patients. Crosslinked poly(N-isopropylacrylamide-co-acrylic acid-co-N-tert-butylacrylamide) was grown onto silica-coated magnetic nanoparticles by reversible addition fragmentation chain transfer (RAFT) polymerization. The lysozyme binding property of the nanoparticles was investigated as a function of time, protein concentration, pH, ionic strength and temperature and their selectivity was assessed against other proteins. High-abundant proteins, like human serum albumin and γ-globulins did not interfere with the binding of lysozyme even at elevated concentrations characteristic of proteinuria. A sample cleanup procedure for urine samples has been developed utilizing the thermocontrollable protein binding ability of the nanoparticles. Method validation was carried out according to current bioanalytical method validation guidelines. The method was highly selective, and the calibration was linear in the 25 to 1000 µg/mL concentration range, relevant in the diagnosis of monocytic and myelomonocytic leukemia. Intra- and inter-day precision values ranged from 2.24 to 8.20% and 1.08 to 5.04%, respectively. Intra-day accuracies were between 89.9 and 117.6%, while inter-day accuracies were in the 88.8 to 111.0% range. The average recovery was 94.1 ± 8.1%. Analysis of unknown urine samples in comparison with a well-established reference method revealed very good correlation between the results, indicating that the new nanoparticle-based method has high potential in the diagnosis of lysozymuria.
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Affiliation(s)
- Marwa A. Ahmed
- Department of Inorganic and Analytical Chemistry, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, H-1111 Budapest, Hungary; (M.A.A.); (J.E.)
- Department of Chemistry, Faculty of Science, Arish University, El-Arish 45511, Egypt
| | - Júlia Erdőssy
- Department of Inorganic and Analytical Chemistry, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, H-1111 Budapest, Hungary; (M.A.A.); (J.E.)
| | - Viola Horvath
- Department of Inorganic and Analytical Chemistry, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, H-1111 Budapest, Hungary; (M.A.A.); (J.E.)
- MTA-BME Computation Driven Chemistry Research Group, H-1111 Budapest, Hungary
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16
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Garfan S, Alamoodi AH, Zaidan BB, Al-Zobbi M, Hamid RA, Alwan JK, Ahmaro IYY, Khalid ET, Jumaah FM, Albahri OS, Zaidan AA, Albahri AS, Al-Qaysi ZT, Ahmed MA, Shuwandy ML, Salih MM, Zughoul O, Mohammed KI, Momani F. Telehealth utilization during the Covid-19 pandemic: A systematic review. Comput Biol Med 2021; 138:104878. [PMID: 34592585 PMCID: PMC8450049 DOI: 10.1016/j.compbiomed.2021.104878] [Citation(s) in RCA: 151] [Impact Index Per Article: 50.3] [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: 04/18/2021] [Revised: 09/13/2021] [Accepted: 09/13/2021] [Indexed: 12/27/2022]
Abstract
During the coronavirus disease (COVID-19) pandemic, different technologies, including telehealth, are maximised to mitigate the risks and consequences of the disease. Telehealth has been widely utilised because of its usability and safety in providing healthcare services during the COVID-19 pandemic. However, a systematic literature review which provides extensive evidence on the impact of COVID-19 through telehealth and which covers multiple directions in a large-scale research remains lacking. This study aims to review telehealth literature comprehensively since the pandemic started. It also aims to map the research landscape into a coherent taxonomy and characterise this emerging field in terms of motivations, open challenges and recommendations. Articles related to telehealth during the COVID-19 pandemic were systematically searched in the WOS, IEEE, Science Direct, Springer and Scopus databases. The final set included (n = 86) articles discussing telehealth applications with respect to (i) control (n = 25), (ii) technology (n = 14) and (iii) medical procedure (n = 47). Since the beginning of the pandemic, telehealth has been presented in diverse cases. However, it still warrants further attention. Regardless of category, the articles focused on the challenges which hinder the maximisation of telehealth in such times and how to address them. With the rapid increase in the utilization of telehealth in different specialised hospitals and clinics, a potential framework which reflects the authors' implications of the future application and opportunities of telehealth has been established. This article improves our understanding and reveals the full potential of telehealth during these difficult times and beyond.
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Affiliation(s)
- Salem Garfan
- Department of Computing, Faculty of Arts, Computing and Creative Industry, Universiti Pendidikan Sultan Idris (UPSI), Perak, Malaysia
| | - A H Alamoodi
- Department of Computing, Faculty of Arts, Computing and Creative Industry, Universiti Pendidikan Sultan Idris (UPSI), Perak, Malaysia.
| | - B B Zaidan
- Future Technology Research Centre, National Yunlin University of Science and Technology, 123 University Road, Section 3, Douliou, Yunlin, 64002, Taiwan, ROC
| | | | - Rula A Hamid
- College of Business Informatics, University of Information Technology and Communications (UOITC), Baghdad, Iraq
| | - Jwan K Alwan
- Biomedical Informatics College, University of Information Technology and Communications (UOITC), Baghdad, Iraq; Faculty of Computer Science and Information Technology, University of Malaya (UM), Malaysia
| | - Ibraheem Y Y Ahmaro
- Computer Science Department, College of Information Technology, Hebron University, Hebron, Palestine
| | - Eman Thabet Khalid
- Department of Computer Sciences, College of Education for Pure Sciences, University of Basrah, Basrah, Iraq
| | - F M Jumaah
- Department of Computer and Software Engineering, Polytechnique Montréal, Canada
| | - O S Albahri
- Department of Computing, Faculty of Arts, Computing and Creative Industry, Universiti Pendidikan Sultan Idris (UPSI), Perak, Malaysia
| | - A A Zaidan
- Department of Computing, Faculty of Arts, Computing and Creative Industry, Universiti Pendidikan Sultan Idris (UPSI), Perak, Malaysia
| | - A S Albahri
- Informatics Institute for Postgraduate Studies (IIPS), Iraqi Commission for Computers and Informatics (ICCI), Baghdad, Iraq
| | - Z T Al-Qaysi
- Department of Computer Science, Computer Science and Mathematics College, Tikrit University, Iraq
| | - M A Ahmed
- Department of Computer Science, Computer Science and Mathematics College, Tikrit University, Iraq
| | - Moceheb Lazam Shuwandy
- Department of Computer Science, Computer Science and Mathematics College, Tikrit University, Iraq
| | - Mahmood M Salih
- Department of Computer Science, Computer Science and Mathematics College, Tikrit University, Iraq
| | - Omar Zughoul
- Computer Information System, Ahmed Bin Mohammed Military College, Al Shahaniya, Qatar
| | - K I Mohammed
- Department of Computing, Faculty of Arts, Computing and Creative Industry, Universiti Pendidikan Sultan Idris (UPSI), Perak, Malaysia
| | - Fayiz Momani
- Department of Computing, Faculty of Arts, Computing and Creative Industry, Universiti Pendidikan Sultan Idris (UPSI), Perak, Malaysia
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17
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Abd-Rabboh HSM, Galal AH, Aziz RA, Ahmed MA. A novel BiVO 3/SnO 2 step S-scheme nano-heterojunction for an enhanced visible light photocatalytic degradation of amaranth dye and hydrogen production. RSC Adv 2021; 11:29507-29518. [PMID: 35479533 PMCID: PMC9040752 DOI: 10.1039/d1ra04717e] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [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: 06/18/2021] [Accepted: 07/26/2021] [Indexed: 11/21/2022] Open
Abstract
The destruction of toxic pollutants and production of hydrogen gas on the surface of semiconductors under light irradiation is the main significance of photocatalysis. Heterojunctions with matching in band gap energy are urgently required for enhancing the redox power of the charge carriers. A step S-scheme BiVO3/SnO2 nano-heterojunction was carefully synthesized for a successful photodegradation of amaranth dye and photocatalytic hydrogen evolution. Tetragonal SnO2 nanoparticles of 80 m2 g-1 surface area and distinct mesoporous structure were fabricated by a sol-gel route in the presence of Tween-80 as the pore structure directing agent. BiVO3 nanoparticles were deposited homogeneously on the SnO2 surface in an ultrasonic bath of power intensity 300 W. The photocatalytic efficiency in the destruction of amaranth dye soar with increasing BiVO3 contents of up to 10 wt%. The hydrogen evolution rate reached 8.2 mmol g-1 h-1, which is eight times stronger than that of pristine SnO2. The sonicated nanocomposites were investigated by XRD, BET, FESEM, HRTEM, EDS, DRS and PL techniques. The step S-scheme heterojunction with superior oxidative and reductive power is the primary key for the exceptional photocatalytic process. The PL of terephthalic acid and the scavenger trapping experiments reveal the charge migration through the step S-scheme mechanism rather than the type (II) heterojunction mechanism.
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Affiliation(s)
- Hisham S M Abd-Rabboh
- Chemistry Department, Faculty of Science, King Khalid University PO Box 9004 Abha 61413 Saudi Arabia.,Department of Chemistry, Faculty of Science, Ain Shams University Abbassia Cairo 11566 Egypt +20 224831836 +20 103979568
| | - A H Galal
- Department of Chemistry, Faculty of Science, Ain Shams University Abbassia Cairo 11566 Egypt +20 224831836 +20 103979568.,Chemical Engineering Department, The British University in Egypt Egypt
| | - Rafi Abdel Aziz
- Department of Chemistry, Faculty of Science, Ain Shams University Abbassia Cairo 11566 Egypt +20 224831836 +20 103979568
| | - M A Ahmed
- Department of Chemistry, Faculty of Science, Ain Shams University Abbassia Cairo 11566 Egypt +20 224831836 +20 103979568
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18
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Hassanein EHM, Ahmed MA, Sayed AM, Rashwan EK, Abd El-Ghafar OAM, Mahmoud AM. Edaravone mitigates hemorrhagic cystitis by modulating Nrf2, TLR-4/NF-κB, and JAK1/STAT3 signaling in cyclophosphamide-intoxicated rats. J Biochem Mol Toxicol 2021; 35:e22889. [PMID: 34390071 DOI: 10.1002/jbt.22889] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 07/28/2021] [Accepted: 08/06/2021] [Indexed: 01/28/2023]
Abstract
Hemorrhagic cystitis is a potentially deadly complication associated with radiation therapy and chemotherapy. This study explored the protective effect of edaravone (ED) on cyclophosphamide (CP)-induced hemorrhagic cystitis, oxidative stress, and inflammation in rats. The animals received 20 mg/kg ED for 10 days and a single injection of 200 mg/kg CP on day 7. CP induced tissue injury manifested by the diffuse necrotic changes, disorganization of lining mucosa, focal hemorrhagic patches, mucosal/submucosal inflammatory cells infiltrates, and edema. CP increased malondialdehyde (MDA), nitric oxide (NO), tumor necrosis factor-alpha, and interleukin 6 (IL-6), decreased IL-10, and upregulated toll-like receptor 4 (TLR-4), nuclear factor-kappa B (NF-κB) p65, Janus kinase 1 (JAK1), and signal transducer and activator of transcription 3 (STAT3) in the urinary bladder of rats. ED effectively prevented the histopathological alterations, decreased MDA, NO, and inflammatory mediators, and downregulated TLR-4, NF-κB, JAK1, and STAT3 in CP-induced rats. Treatment with ED upregulated ikβ kinase β, IL-10, nuclear factor-erythroid 2 related factor 2 (Nrf2), and cytoglobin, and boosted glutathione, superoxide dismutase, and glutathione S-transferase. Molecular docking simulations revealed the ability of ED to bind TLR-4, NF-κB, JAK1, and STAT3. In vitro, ED increased the cytotoxic activity of CP against HeLa, Caco-2, and K562 cell lines. In conclusion, ED prevented CP-induced hemorrhagic cystitis in rats by attenuating oxidative stress, suppressing TLR-4/NF-κB, and JAK1/STAT3 signaling and boosted Nrf2, cytoglobin, and antioxidants.
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Affiliation(s)
- Emad H M Hassanein
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Assiut, Egypt
| | - Marwa A Ahmed
- Department of Pharmacology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Ahmed M Sayed
- Biochemistry Laboratory, Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt
| | - Eman K Rashwan
- Department of Physiology, College of Medicine, Jouf University, Sakaka, Saudi Arabia.,Department of Physiology, College of Medicine, Al-Azhar University, Assiut, Egypt
| | - Omnia A M Abd El-Ghafar
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Nahda University, Beni-Suef, Egypt
| | - Ayman M Mahmoud
- Physiology Division, Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt.,Biotechnology Department, Research Institute of Medicinal and Aromatic Plants, Beni-Suef University, Beni-Suef, Egypt
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19
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Sanad MF, Shalan AE, Ahmed MA, Messih MFA. The controlled synthesis and DFT investigation of novel (0D)-(3D) ZnS/SiO 2 heterostructures for photocatalytic applications. RSC Adv 2021; 11:22352-22364. [PMID: 35480787 PMCID: PMC9034197 DOI: 10.1039/d1ra02284a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 06/12/2021] [Indexed: 01/11/2023] Open
Abstract
A ZnS/SiO2 photocatalyst was synthesized using a low-cost sol-gel wet chemical procedure. The as-synthesized ZnS/SiO2 nanocomposites with different molar ratios exhibited superior performance in the photodegradation of two organic dyes under UV irradiation, with complete degradation of both dyes after 2 hours of exposure to UV irradiation. The photocatalyst structure, microstructure, and surface area were studied using X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), field emission scanning electron microscopy (FESEM), and nitrogen adsorption (S BET) studies. The results demonstrate that the ZnS/SiO2 photocatalyst with 15% ZnS content has a bandgap energy similar to that of ZnS alone with a higher surface area of approximately 150 m2 g-1, which effectively increases the number of active sites and improves the photocatalytic activity of the prepared material. The measured bandgap energies were compared with the theoretical values obtained using the density functional theory (DFT) method, and the values were found to be very similar, with a low error percentage. In the case of a high ZnS content (greater than 15%), active site blocking occurred, and the removal rate dropped below 50%. The obtained results indicate that the photocatalytic data are in good agreement with the experimental characterization results for the prepared materials, including the BET and XRD results, confirming a close association between the photocatalytic activity and the surface area of the fabricated photocatalyst.
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Affiliation(s)
- Mohamed F Sanad
- Chemistry Department, Faculty of Science, Ain Shams University Egypt
- Department of Chemistry and Department of Environmental Sciences and Engineering, University of Texas at El Paso 500 West University Avenue El Paso Texas 79968 USA
| | - Ahmed Esmail Shalan
- Central Metallurgical Research and Development Institute (CMRDI) P.O. Box 87, Helwan Cairo 11422 Egypt
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, Martina Casiano, UPV/EHU Science Park Barrio Sarriena s/n Leioa 48940 Spain
| | - M A Ahmed
- Chemistry Department, Faculty of Science, Ain Shams University Egypt
| | - M F Abdel Messih
- Chemistry Department, Faculty of Science, Ain Shams University Egypt
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20
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Abdelhafez AT, Gomaa AMS, Ahmed AM, Sayed MM, Ahmed MA. Pioglitazone and/or irbesartan ameliorate COPD-induced endothelial dysfunction in side stream cigarette smoke-exposed mice model. Life Sci 2021; 280:119706. [PMID: 34102190 DOI: 10.1016/j.lfs.2021.119706] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 05/26/2021] [Accepted: 06/03/2021] [Indexed: 01/18/2023]
Abstract
AIMS Cigarette smoking (CS) is the main cause of chronic obstructive pulmonary disease (COPD). Endothelial dysfunction is related to the severity of pulmonary disease in COPD. This study aimed to evaluate the effectiveness of single and combined administration of pioglitazone (Pio) and irbesartan (Irb) against COPD-induced endothelial dysfunction in mice and the involvement of NO and H2S in their effects. MATERIALS AND METHODS Adult male Swiss mice (n = 40, weighing 25-30 g) were assigned into 5 groups. The normal control group received 1% carboxy methyl cellulose (CMC). The CS group was exposed to CS and administered 1% CMC for 3 months. The CS + Pio, CS + Irb, and CS + Pio/Irb groups were subjected to CS and received Pio (60 mg/kg), Irb (50 mg/kg), and their combination respectively, daily orally for 3 months. Body weight gain, mean blood pressure, urinary albumin, serum NO and ET-1 levels with TNF-α and IL-2 levels in lung tissue and bronchoalveolar lavage were measured. Lung H2S and ET-1 levels, protein expression of PPARγ in lung and VEGF in lung and aortic tissues with histological changes were assessed. KEY FINDINGS Our results illustrated that CS induced a model of COPD with endothelial dysfunction in mice. Pio/Irb singly and in combination elicited protective effects against the pathophysiology of the disease with more improvement in the combined group. There is a strong correlation between NO and H2S as well as the other measured parameters. SIGNIFICANCE Collectively, both drugs performed these effects via their anti-inflammatory potential and increasing H2S and NO levels.
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Affiliation(s)
- Alaa T Abdelhafez
- Department of Pharmacology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Asmaa M S Gomaa
- Department of Medical Physiology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Asmaa M Ahmed
- Department of Pathology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Manal M Sayed
- Department of Histology and Cell Biology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Marwa A Ahmed
- Department of Pharmacology, Faculty of Medicine, Assiut University, Assiut, Egypt.
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21
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Ali S, Hossain M, Azad AB, Siddique AB, Moniruzzaman M, Ahmed MA, Amin MB, Islam MS, Rahman MM, Mondal D, Mahmud ZH. Diversity of Vibrio parahaemolyticus in marine fishes of Bangladesh. J Appl Microbiol 2021; 131:2539-2551. [PMID: 33788359 DOI: 10.1111/jam.15093] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 03/04/2021] [Accepted: 03/26/2021] [Indexed: 11/29/2022]
Abstract
AIMS To determine the occurrence, diversity, antibiotic resistance and biofilm formation of Vibrio parahaemolyticus isolated from marine fishes in Bangladesh. METHODS AND RESULTS A total of 80 marine fishes were obtained from the local markets and examined for the presence of V. parahaemolyticus. All the isolated V. parahaemolyticus were characterized for the presence of virulence markers, thermostable direct hemolysin (TDH) or thermostable direct hemolysin related hemolysin (TRH). Isolates were serotyped and further characterized by enterobacterial repetitive intergenic consensus sequence PCR (ERIC-PCR) typing to analyse the genetic diversity. Moreover, biofilm formation and antibiotic resistance patterns were also determined. About 63·75% (51/80) of the tested marine fishes were contaminated with V. parahaemolyticus. From the contaminated fishes, 71 representatives V. parahaemolyticus were isolated and none of them harboured tdh and trh virulence genes. Nine different O-groups and seven different K-types were found by serological analysis and the dominant serotype was O5:KUT. In ERIC-PCR analysis, eight clusters (A-H) were found and the most common pattern was A (46·5%). All of the isolates were resistant to ampicillin and 78·9% of isolates were resistant to streptomycin. The highest biofilm formation was found at 37°C compared to 25°C and 4°C. CONCLUSION Diverse V. parahaemolyticus are present in marine fishes in the local market of Bangladesh with antibiotic-resistant properties and biofilm formation capacity. SIGNIFICANCE AND IMPACT OF THE STUDY The widespread prevalence of diverse V. parahaemolyticus in marine fishes is an issue of serious concern, and it entails careful monitoring to ascertain the safety of seafood consumers.
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Affiliation(s)
- S Ali
- Laboratory of Environmental Health, Laboratory Sciences and Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - M Hossain
- Laboratory of Environmental Health, Laboratory Sciences and Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - A B Azad
- Department of Botany, University of Dhaka, Dhaka, Bangladesh
| | - A B Siddique
- Laboratory of Environmental Health, Laboratory Sciences and Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - M Moniruzzaman
- Laboratory of Environmental Health, Laboratory Sciences and Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - M A Ahmed
- Laboratory of Environmental Health, Laboratory Sciences and Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - M B Amin
- Laboratory of Food Safety and One Health, Laboratory Sciences and Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - M S Islam
- Laboratory of Environmental Health, Laboratory Sciences and Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - M M Rahman
- Department of Microbiology, University of Dhaka, Dhaka, Bangladesh
| | - D Mondal
- Laboratory of Environmental Health, Laboratory Sciences and Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh.,Laboratory of Food Safety and One Health, Laboratory Sciences and Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Z H Mahmud
- Laboratory of Environmental Health, Laboratory Sciences and Services Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
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22
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Hassanein EHM, Abd El-Ghafar OAM, Ahmed MA, Sayed AM, Gad-Elrab WM, Ajarem JS, Allam AA, Mahmoud AM. Edaravone and Acetovanillone Upregulate Nrf2 and PI3K/Akt/mTOR Signaling and Prevent Cyclophosphamide Cardiotoxicity in Rats. Drug Des Devel Ther 2020; 14:5275-5288. [PMID: 33299300 PMCID: PMC7721127 DOI: 10.2147/dddt.s281854] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 11/11/2020] [Indexed: 01/17/2023]
Abstract
Introduction Cyclophosphamide (CP) causes redox imbalance and its use is associated with marked cardiotoxicity that limits its clinical applications. The present study investigated the protective effects of acetovanillone (AV) and edaravone (ED) against CP-induced oxidative stress and cardiac damage, emphasizing the role of PI3K/Akt/mTOR and Nrf2 signaling. Materials and Methods Rats received either AV (100 mg/kg) or ED (20 mg/kg) orally for 10 days and CP (200 mg/kg) on day 7. At day 11, the rats were sacrificed, and samples were collected for analysis. Results AV and ED ameliorated serum troponin I, CK-MB, LDH, AST and ALP, and prevented cardiac histological alterations in CP-intoxicated rats. Both treatments decreased cardiac lipid peroxidation and enhanced GSH, SOD and cytoglobin in CP-induced rats. AV and ED downregulated Keap1, whereas increased the expression of PI3K, Akt, mTOR and Nrf2 in the heart of rats received CP. Additionally, the binding modes of AV and ED to Keap1 were pinpointed in silico using molecular docking simulations. Conclusion AV and ED prevent CP cardiotoxicity by attenuating oxidative stress and tissue injury, and modulating cytoglobin, and PI3K/Akt/mTOR and Keap1/Nrf2 signaling. Therefore, AV and ED may represent promising agents that can prevent cardiac injury in patients receiving CP.
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Affiliation(s)
- Emad H M Hassanein
- Department of Pharmacology and Toxicology Faculty of Pharmacy, Al-Azhar University, Assiut, Egypt
| | - Omnia A M Abd El-Ghafar
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Nahda University, Beni-Suef, Egypt
| | - Marwa A Ahmed
- Department of Pharmacology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Ahmed M Sayed
- Biochemistry Laboratory, Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt
| | - Wail M Gad-Elrab
- Human Anatomy & Embryology Department Faculty of Medicine, Al-Azhar University, Assiut, Egypt
| | - Jamaan S Ajarem
- Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Ahmed A Allam
- Zoology Department Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Ayman M Mahmoud
- Zoology Department Faculty of Science, Beni-Suef University, Beni-Suef, Egypt.,Biotechnology Department, Research Institute of Medicinal and Aromatic Plants, Beni-Suef University, Beni-Suef, Egypt
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23
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Ahmed MA, Kamel EO. Involvement of H
2
S, NO and BDNF‐TrkB signalling pathway in the protective effects of simvastatin against pentylenetetrazole‐induced kindling and cognitive impairments in mice. Basic Clin Pharmacol Toxicol 2020; 127:461-476. [DOI: 10.1111/bcpt.13457] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 06/12/2020] [Accepted: 06/15/2020] [Indexed: 12/20/2022]
Affiliation(s)
- Marwa A. Ahmed
- Department of Pharmacology Faculty of Medicine Assiut University Assiut Egypt
| | - Esam O. Kamel
- Department of Medical Histology and Cell Biology Faculty of Medicine Al‐Azhar UniversityAssiut Branch Assiut Egypt
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24
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Mahmoud AR, Kamel EO, Ahmed MA, Ahmed EA, Abd-Elhamid TH. Alleviation of Simvastatin-Induced Myopathy in Rats by the Standardized Extract of Ginkgo Biloba (EGb761): Insights into the Mechanisms of Action. Cells Tissues Organs 2020; 208:158-176. [PMID: 32369804 DOI: 10.1159/000507048] [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: 09/25/2019] [Accepted: 03/07/2020] [Indexed: 01/24/2023] Open
Abstract
Statins are the most widely prescribed cholesterol-lowering drugs to reduce the risk of cardiovascular diseases. Statin-induced myopathy is the major side effect of this class of drugs. Here, we studied whether standardized leaf extracts of ginkgo biloba (EGb761) would improve simvastatin (SIM)-induced muscle changes. Sixty Wistar rats were allotted into six groups: control group, vehicle group receiving 0.5% carboxymethyl cellulose (CMC) for 30 days, SIM group receiving 80 mg/kg/day SIM in 0.5% CMC orally for 30 days, SIM withdrawal group treated with SIM for 16 days and sacrificed 14 days later, and EGb761-100 and EGb761-200 groups posttreated with either 100 or 200 mg/kg/day EGb761 orally. Muscle performance on the rotarod, serum creatine kinase (CK), coenzyme Q10 (CoQ10), serum and muscle nitrite, muscle malondialdehyde (MDA), superoxide dismutase (SOD), and catalase (CAT) activities were estimated. Additionally, muscle samples were processed for histopathological evaluation. We found that SIM decreased muscle performance on the rotarod, serum CoQ10, as well as muscle SOD and CAT activities while it increased serum CK, serum and muscle nitrite, as well as muscle MDA levels. SIM also induced sarcoplasmic vacuolation, splitting of myofibers, disorganization of sarcomeres, and disintegration of myofilaments. In contrast, posttreatment with EGb761 increased muscle performance, serum CoQ10, as well as muscle SOD and CAT activities while it reduced serum CK as well as serum and muscle nitrite levels in a dose-dependent manner. Additionally, EGb761 reversed SIM-induced histopathological changes with better results obtained by its higher dose. Interestingly, SIM withdrawal increased muscle performance on the rotarod, reduce serum CK and CoQ10, and reduced serum and muscle nitrite while it reversed SIM-induced histopathological changes. However, SIM withdrawal was not effective enough to restore their normal values. Additionally, SIM withdrawal did not improve SIM-induce muscle MDA, SOD, or CAT activities during the period studied. Our results suggest that EGb761 posttreatment reversed SIM-induces muscle changes possibly through its antioxidant effects, elevation of CoQ10 levels, and antagonizing mitochondrial damage.
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Affiliation(s)
- Amany R Mahmoud
- Department of Human Anatomy and Embryology, Faculty of Medicine, Assiut University, Assiut, Egypt.,Anatomy Unit, Department of Basic Medical Sciences, Unaizah College of Medicine and Medical Sciences, Qassim University, Unaizah, Saudi Arabia
| | - Esam Omar Kamel
- Department of Medical Histology and Cell Biology, Faculty of Medicine, Al-Azhar University, Assiut, Egypt
| | - Marwa A Ahmed
- Department of Pharmacology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Esraa A Ahmed
- Department of Pharmacology, Faculty of Medicine, Assiut University, Assiut, Egypt.,Centre of Excellence in Environmental Studies, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Tarek Hamdy Abd-Elhamid
- Department of Histology and Cell Biology, Faculty of Medicine, Assiut University, Assiut, Egypt,
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25
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Ahmed MA, Akram B, Ul Haq MA, Ahmad R, Ahmad M. The effect of gestational age on women's preference for quality goods. Niger J Clin Pract 2020; 23:503-509. [PMID: 32246657 DOI: 10.4103/njcp.njcp_40_18] [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] [Indexed: 11/04/2022]
Abstract
Background It is a well-established fact that hormonal changes significantly influence the consumer behaviors and their purchase intentions. However, attention to the conspicuous buying due to the mood swings, as a result of hormonal changes, during the pregnancy have been largely ignored in the literature. Aims The current research aims to examine the prospective association of conspicuous purchase intentions with hormonal changes and mood swings during the pregnancy. Methods An experimental procedure was used to assess the data collected from pregnant women (n = 116) and the hypotheses were analyzed using recall probability and recall position measures. Results The hormonal changes during the pregnancy were analyzed in three stages known as pregnancy trimesters suggested by the relevant literature (Trimester-1 = 39, Trimister-2 = 36 and Trimester-3 = 41). The respondents were exposed to visual attention of specifically designed images with a unique combination of the status and functional products. The ROC values for Trimester 2 is higher in all 4 graphs (0.923, 0.960, 0.892, and 0.923) respectively than Trimester 1 and 3. Conclusion Findings revealed that the women purchase preferences shift as pregnancy move from one trimester to another. Women pay more attention to status products during the 2nd trimester as compared to 1st and 3rd trimesters of pregnancy.
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Affiliation(s)
- M A Ahmed
- Department of Management Sciences, University of Gujrat, Sialkot, Pakistan
| | - B Akram
- Department of Psychology, University of Gujrat, Sialkot, Pakistan
| | - M Anwar Ul Haq
- Department of Management Sciences, University of Gujrat, Sialkot, Pakistan
| | - R Ahmad
- Department of Gynecology, Sialkot Medical College, Sialkot, Pakistan
| | - M Ahmad
- Department of Management Sciences, University of Gujrat, Sialkot, Pakistan
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26
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Abd Allah ESH, Ahmed MA, Makboul R, Abd El-Rahman MA. Effects of hydrogen sulphide on oxidative stress, inflammatory cytokines, and vascular remodelling in l-NAME-induced hypertension. Clin Exp Pharmacol Physiol 2020; 47:650-659. [PMID: 31868952 DOI: 10.1111/1440-1681.13240] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 09/10/2019] [Revised: 11/29/2019] [Accepted: 12/18/2019] [Indexed: 12/12/2022]
Abstract
This study was designed to evaluate the protective effects of hydrogen sulphide (H2 S) against NG-Nitro l-Arginine Methyl Ester (l-NAME)-induced hypertension and its possible effects on the inflammatory process, oxidative stress, and vascular remodelling in rats. Forty male Wistar Albino rats were assigned to four equal groups: the control group, the H2 S control group, the hypertensive group, and the treated group, which received concomitant treatment with sodium hydrosulphide (NaHS) and l-NAME. Systolic blood pressure (SBP) was measured weekly. Serum levels of nitric oxide (NO), total peroxide, and total antioxidant capacity (TAC) were measured and the oxidative stress index (OSI) was calculated. Aortic weight and length were measured and the aortic weight/length ratio determined. Aortic fold expression of interferon-γ (IFN-γ) and vascular cell adhesion molecule-1 (VCAM-1) mRNA was measured using qPCR. Aortic media thickness and elastin content were measured morphometrically. l-NAME administration increased SBP, serum levels of total peroxide and OSI, but reduced serum levels of NO and TAC. Aortic fold expression of IFN-γ and VCAM-1 mRNA, aortic weight, aortic weight/length ratio, aortic media thickness, and elastin area percentage were increased in the hypertensive group. Concurrent administration of l-NAME and H2 S attenuated these changes. Thus, H2 S could attenuate the increase in ABP through restoration of the NO level, reduction in the oxidative state, and attenuation of the inflammatory process, thereby reduced vascular remodelling.
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Affiliation(s)
- Eman S H Abd Allah
- Medical Physiology Department, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Marwa A Ahmed
- Medical Physiology Department, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Rania Makboul
- Pathology Department, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Mona A Abd El-Rahman
- Medical Physiology Department, Faculty of Medicine, Assiut University, Assiut, Egypt
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Ahmed MA, Abdelsatar MA, Attia MA, Abeer AA. GGE biplot analysis of Line by tester for seed yield and its attributes in sunflower. Vestn Ross univ družby nar , Ser Agron životnovod 2019. [DOI: 10.22363/2312-797x-2019-14-4-374-389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Nine genetically diverse sunflower promising lines in their economic trait were crossed using line by tester mating design in 2018 spring season, to estimate per se performance, combining ability, heterosis, gene action and heritability for earliness, yield and its attributes traits. The parents involved four sunflower CMS lines namely L1 (A3), L2 (A5), L3 (A9) and L4 (A13) (called hereafter “Lines” (as female parents) and five sunflower genotypes T1 (RF9), T2 (RF10), T3 (RF11), T4 (RF14) and T5 (RF1) as male parents (called hereafter “Tester”). In 2018 and 2019 summer season, the nine parents along with their 20 F1s seeds were evaluated at Shandaweel Agricultural Research Station, ARC, Sohag Governorate, Egypt using a randomized complete blocks design with three replications. Mean squares due to parents (P), crosses (C), CMS lines (L), RF testers (T), P vs C and L x T were significant for all studied traits. A larger magnitude of non-additive gene action than additive was revealed by greater ratios (GCA/ SCA) than unity for all studied traits (except for days to 50% flowering). A5 and A13 of CMS lines and RF11 and RF14 of RF lines proved to be the best general combiners for seed weight plant-1 and one or more of its attributes traits. Moreover, the best cross combinations A13 x RF11, A13 x RF1 and A5 x RF9 performed better than other developed hybrids in view of seed weight plant-1 and one or more of its attributes, hence these F1 hybrids could further be used on commercial exploitation.
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28
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Kamel EO, Hassanein EHM, Ahmed MA, Ali FEM. Perindopril Ameliorates Hepatic Ischemia Reperfusion Injury
Via
Regulation of NF‐κB‐p65/TLR‐4, JAK1/STAT‐3, Nrf‐2, and PI3K/Akt/mTOR Signaling Pathways. Anat Rec (Hoboken) 2019; 303:1935-1949. [PMID: 31606943 DOI: 10.1002/ar.24292] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Revised: 08/28/2019] [Accepted: 09/03/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Esam O. Kamel
- Department of Medical Histology and Cell Biology, Faculty of MedicineAl‐Azhar University Assiut Egypt
| | - Emad H. M. Hassanein
- Department of Pharmacology & Toxicology, Faculty of PharmacyAl‐Azhar University Assiut Egypt
| | - Marwa A. Ahmed
- Department of Pharmacology, Faculty of MedicineAssiut University Asyut Egypt
| | - Fares E. M. Ali
- Department of Pharmacology & Toxicology, Faculty of PharmacyAl‐Azhar University Assiut Egypt
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29
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Terán Hilares R, Dionízio RM, Prado CA, Ahmed MA, da Silva SS, Santos JC. Pretreatment of sugarcane bagasse using hydrodynamic cavitation technology: Semi-continuous and continuous process. Bioresour Technol 2019; 290:121777. [PMID: 31319211 DOI: 10.1016/j.biortech.2019.121777] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 07/04/2019] [Accepted: 07/05/2019] [Indexed: 06/10/2023]
Abstract
Development of new technologies for pretreatment of lignocellulosic biomass is a current research challenge. In this way, hydrodynamic cavitation (HC) was used to assist alkaline hydrogen peroxide pretreatment of sugarcane bagasse (SCB) in sequential batches (SB-HC), semi-continuous (SC-HC) and continuous (C-HC) processes. Pretreatment resulted in compositional modifications in the material, mainly regarding the cellulose and lignin contents. The released sugars after enzymatic hydrolysis resulted, on average, in 42 g and 32-35 g of glucose per 100 g of SCB for samples treated in B-HC (10 min of process) and SC-HC process (7.5 min residence time), respectively. In C-HC process, with an average residence time of 7.5 min and 3.75 min, 38-46 g and 32-38 g of glucose per 100 g of SCB were obtained respectively in enzymatic hydrolysis step. HC technology was shown as a promising alternative for pretreatment of lignocellulosic biomass in all evaluated configurations aiming to produce high value bioproducts.
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Affiliation(s)
- R Terán Hilares
- Department of Biotechnology, Engineering School of Lorena, University of São Paulo, postal code 12602-810 Lorena, Brazil.
| | - R M Dionízio
- Department of Biotechnology, Engineering School of Lorena, University of São Paulo, postal code 12602-810 Lorena, Brazil
| | - C A Prado
- Department of Biotechnology, Engineering School of Lorena, University of São Paulo, postal code 12602-810 Lorena, Brazil
| | - M A Ahmed
- Graduate School of International Agricultural Technology, Institute of Green-Bio Science and Technology, Seoul National University, PyeongChang 232-916, Republic of Korea
| | - S S da Silva
- Department of Biotechnology, Engineering School of Lorena, University of São Paulo, postal code 12602-810 Lorena, Brazil
| | - J C Santos
- Department of Biotechnology, Engineering School of Lorena, University of São Paulo, postal code 12602-810 Lorena, Brazil
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Farghaly HSM, Elbadr MM, Ahmed MA, Abdelhaffez AS. Effect of single and repeated administration of amitriptyline on neuropathic pain model in rats: Focus on glutamatergic and upstream nitrergic systems. Life Sci 2019; 233:116752. [PMID: 31415770 DOI: 10.1016/j.lfs.2019.116752] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 07/09/2019] [Revised: 08/03/2019] [Accepted: 08/11/2019] [Indexed: 10/26/2022]
Abstract
AIMS Few studies have compared the interaction of single and repeated administration of amitriptyline (amit) with the nitrergic system and glutamatergic system in the experimental model of neuropathic pain. We aimed to evaluate the antinociceptive effect of single and repeated administration of amit and to assess whether glutamate preceded inducible nitric oxide synthase (iNOS) inhibition as a mechanism of the analgesic effect of amit in the neuropathic model of pain. MATERIALS AND METHODS Male Wistar rats were subjected to left sciatic nerve ligation. The effect of single (25 mg kg-1) and repeated (10 mg kg-1 daily for 3 weeks) administration of amit intraperitoneally (i.p.) alone or in combination with aminoguanidine (AG i.p., 100 mg kg-1 for 3 days, a selective iNOS inhibitor) and MK-801 (0.05 mg kg-1 i.p., NMDA antagonist) on resting paw posture and mechanical hyperalgesia were studied. Glutamate level and iNOS protein expression in hippocampus were detected. KEY FINDINGS Single and repeated administration of amit alone or in combination with AG or MK-801 demonstrated a significant decrease in resting pain score and increase in the pain threshold. Both glutamate and nitrite levels decreased in the hippocampi of single and repeated amit + MK-801 groups. Immunohistochemistry showed a marked decrease in iNOS immunoreactivity in rats treated with single and repeated amit + MK-801. SIGNIFICANCE Our results suggest that glutamate-dependent mechanisms are involved in the analgesic responses to amit administration. Importantly, glutamatergic system and its upstream nitrergic system play an important role in the antinociceptive action of amit.
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Affiliation(s)
- Hanan S M Farghaly
- Pharmacology Department, Faculty of Medicine, Assiut University, Assiut 71526, Egypt.
| | - Mohamed M Elbadr
- Pharmacology Department, Faculty of Medicine, Assiut University, Assiut 71526, Egypt
| | - Marwa A Ahmed
- Pharmacology Department, Faculty of Medicine, Assiut University, Assiut 71526, Egypt
| | - Azza S Abdelhaffez
- Physiology Department, Faculty of Medicine, Assiut University, Assiut 71526, Egypt
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Azab HA, Khairy GM, Abd El-Ghany N, Ahmed MA. A new luminescent bio-probe of Europium(III)-complex for sensing some biomolecules and CT-DNA. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.01.002] [Citation(s) in RCA: 2] [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: 10/27/2022]
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32
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Kim SK, Ioannidis JPA, Ahmed MA, Avins AL, Kleimeyer JP, Fredericson M, Dragoo JL. Two Genetic Variants Associated with Plantar Fascial Disorders. Int J Sports Med 2018. [PMID: 29534260 DOI: 10.1055/s-0044-100280] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Plantar fascial disorder is comprised of plantar fasciitis and plantar fibromatosis. Plantar fasciitis is the most common cause of heel pain, especially for athletes involved in running and jumping sports. Plantar fibromatosis is a rare fibrous hyperproliferation of the deep connective tissue of the foot. To identify genetic loci associated with plantar fascial disorders, a genome-wide association screen was performed using publically available data from the Research Program in Genes, Environment and Health including 21,624 cases of plantar fascial disorders and 80,879 controls. One indel (chr5:118704153:D) and one SNP (rs62051384) showed an association with plantar fascial disorders at genome-wide significance (p<5×10-8) with small effects (odds ratios=0.93 and 1.07 per allele, respectively). The indel chr5:118704153:D is located within TNFAIP8 (encodes a protein induced by TNF alpha) and rs62051384 is located within WWP2 (which is involved in proteasomal degradation). These DNA variants may be informative in explaining why some individuals are at higher risk for plantar fascial disorders than others.
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Affiliation(s)
- Stuart K Kim
- Dept. Developmental Biology, Stanford University Medical Center, Stanford CA, USA
| | - John P A Ioannidis
- Dept. of Medicine, Stanford Prevention Research Center and Dept. of Health Research and Policy, Division of Epidemiology, Stanford University School of Medicine, and Dept. of Statistics, Stanford University School of Humanities and Sciences, Stanford CA, USA
| | - Marwa A Ahmed
- Dept. Physical Medicine and Rehabilitation, Harvard Medical School, Boston MA, USA
| | - Andrew L Avins
- Kaiser Permanente Northern California, Division of Research, Oakland, California, USA
| | - John P Kleimeyer
- Dept. Orthopaedic Surgery, Stanford University Medical Center, Stanford CA, USA
| | - Michael Fredericson
- Dept. Orthopaedic Surgery, Stanford University Medical Center, Stanford CA, USA
| | - Jason L Dragoo
- Dept. Orthopaedic Surgery, Stanford University Medical Center, Stanford CA, USA
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Roos TR, Roos AK, Avins AL, Ahmed MA, Kleimeyer JP, Fredericson M, Ioannidis JPA, Dragoo JL, Kim SK. Genome-wide association study identifies a locus associated with rotator cuff injury. PLoS One 2017; 12:e0189317. [PMID: 29228018 PMCID: PMC5724859 DOI: 10.1371/journal.pone.0189317] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 11/22/2017] [Indexed: 01/10/2023] Open
Abstract
Rotator cuff tears are common, especially in the fifth and sixth decades of life, but can also occur in the competitive athlete. Genetic differences may contribute to overall injury risk. Identifying genetic loci associated with rotator cuff injury could shed light on the etiology of this injury. We performed a genome-wide association screen using publically available data from the Research Program in Genes, Environment and Health including 8,357 cases of rotator cuff injury and 94,622 controls. We found rs71404070 to show a genome-wide significant association with rotator cuff injury with p = 2.31x10-8 and an odds ratio of 1.25 per allele. This SNP is located next to cadherin8, which encodes a protein involved in cell adhesion. We also attempted to validate previous gene association studies that had reported a total of 18 SNPs showing a significant association with rotator cuff injury. However, none of the 18 SNPs were validated in our dataset. rs71404070 may be informative in explaining why some individuals are more susceptible to rotator cuff injury than others.
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Affiliation(s)
- Thomas R. Roos
- Department of Developmental Biology, Stanford University Medical Center, Stanford, CA, United States of America
- Department of Health Research and Policy, Division of Epidemiology, Stanford University Medical Center, Stanford, CA, United States of America
| | - Andrew K. Roos
- Department of Developmental Biology, Stanford University Medical Center, Stanford, CA, United States of America
- Department of Health Research and Policy, Division of Epidemiology, Stanford University Medical Center, Stanford, CA, United States of America
| | - Andrew L. Avins
- Kaiser Permanente Northern California, Division of Research, Oakland, CA, United States of America
| | - Marwa A. Ahmed
- Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, United States of America
| | - John P. Kleimeyer
- Department of Orthopaedic Surgery, Stanford University Medical Center, Stanford, CA, United States of America
| | - Michael Fredericson
- Department of Orthopaedic Surgery, Stanford University Medical Center, Stanford, CA, United States of America
| | - John P. A. Ioannidis
- Department of Medicine, Stanford Prevention Research Center and Dept. of Health Research and Policy, Division of Epidemiology, Stanford University School of Medicine, and Dept. of Statistics, Stanford University School of Humanities and Sciences, Stanford, CA, United States of America
| | - Jason L. Dragoo
- Department of Orthopaedic Surgery, Stanford University Medical Center, Stanford, CA, United States of America
| | - Stuart K. Kim
- Department of Developmental Biology, Stanford University Medical Center, Stanford, CA, United States of America
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Abstract
De Quervain's tenosynovitis is a repetitive strain injury involving synovial inflammation of the tendons of the first extensor compartment of the wrist. It is relatively common in the general population, and is the most common radial-sided tendinopathy seen in athletes. Identifying a genetic marker associated with de Quervain's tenosynovitis could provide a useful tool to help identify those individuals with an increased risk for injury. A genome-wide association screen was performed using publically available data from the Research Program in Genes, Environment and Health (RPGEH) including 4,129 cases and 98,374 controls. rs35360670 on chromosome 8 showed an association with de Quervain's tenosynovitis at genome-wide significance (p=1.9×10-8; OR=1.46; 95% CI=1.38-1.59). This study is the first genome-wide screen for de Quervain's tenosynovitis and provides insights regarding its genetic etiology as well as a DNA marker with the potential to inform athletes and other high-risk individuals about their relative risk for injury.
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Affiliation(s)
- Stuart K Kim
- Dept. of Dev. Bio., Stanford, Stanford University, United States
| | - Marwa A Ahmed
- Dept. of Orthopedic Surgery, Stanford University, Stanford, United States
| | - Andy L Avins
- Division of Research, Kaiser Permanente Northern California, Oakland, United States
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Kim SK, Kleimeyer JP, Ahmed MA, Avins AL, Fredericson M, Dragoo JL, Ioannidis JPA. Two genetic loci associated with ankle injury. PLoS One 2017; 12:e0185355. [PMID: 28957384 PMCID: PMC5619760 DOI: 10.1371/journal.pone.0185355] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 09/11/2017] [Indexed: 11/18/2022] Open
Abstract
Ankle injuries, including sprains, strains and other joint derangements and instability, are common, especially for athletes involved in indoor court or jumping sports. Identifying genetic loci associated with these ankle injuries could shed light on their etiologies. A genome-wide association screen was performed using publicly available data from the Research Program in Genes, Environment and Health (RPGEH) including 1,694 cases of ankle injury and 97,646 controls. An indel (chr21:47156779:D) that lies close to a collagen gene, COL18A1, showed an association with ankle injury at genome-wide significance (p = 3.8x10-8; OR = 1.99; 95% CI = 1.75-2.23). A second DNA variant (rs13286037 on chromosome 9) that lies within an intron of the transcription factor gene NFIB showed an association that was nearly genome-wide significant (p = 5.1x10-8; OR = 1.63; 95% CI = 1.46-1.80). The ACTN3 R577X mutation was previously reported to show an association with acute ankle sprains, but did not show an association in this cohort. This study is the first genome-wide screen for ankle injury that yields insights regarding the genetic etiology of ankle injuries and provides DNA markers with the potential to inform athletes about their genetic risk for ankle injury.
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Affiliation(s)
- Stuart K. Kim
- Dept. Developmental Biology, Stanford University Medical Center, Stanford, CA, United States of America
| | - John P. Kleimeyer
- Dept. Orthopaedic Surgery, Stanford University Medical Center, Stanford, CA, United States of America
| | - Marwa A. Ahmed
- Dept. Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, United States of America
| | - Andrew L. Avins
- Kaiser Permanente Northern California, Division of Research, Oakland, CA, United States of America
| | - Michael Fredericson
- Dept. Orthopaedic Surgery, Stanford University Medical Center, Stanford, CA, United States of America
| | - Jason L. Dragoo
- Dept. Orthopaedic Surgery, Stanford University Medical Center, Stanford, CA, United States of America
| | - John P. A. Ioannidis
- Dept. of Medicine, Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, CA, United States of America
- Dept. of Health Research and Policy, Division of Epidemiology, Stanford University School of Medicine, Stanford, CA, United States of America
- Dept. of Statistics, Stanford University School of Humanities and Sciences, Stanford, CA, United States of America
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Kim S, Kleimeyer JP, Ahmed MA, Avins AL, Fredericson M, Dragoo JL, Ioannidis JPA. A Genetic Marker Associated with Shoulder Dislocation. Int J Sports Med 2017; 38:508-514. [PMID: 28521375 DOI: 10.1055/s-0043-106190] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Shoulder dislocations are common shoulder injuries associated with athletic activity in contact sports, such as football, rugby, wrestling, and hockey. Identifying genetic loci associated with shoulder dislocation could shed light on underlying mechanisms for injury and identify predictive genetic markers. To identify DNA polymorphisms associated with shoulder dislocation, a genome-wide association screen was performed using publically available data from the Research Program in Genes, Environment and Health including 662 cases of shoulder dislocation and 82 602 controls from the European ancestry group. rs12913965 showed an association with shoulder dislocation at genome-wide significance (p=9.7×10-9; odds ratio=1.6) from the European ancestry group. Individuals carrying one copy of the risk allele (T) at rs12913965 showed a 69% increased risk for shoulder dislocation in our cohort. rs12913965 is located within an intron of the TICRR gene, which encodes TOPBP1 interacting checkpoint and replication regulator involved in the cell cycle. rs12913965 is also associated with changes in expression of the ISG20 gene, which encodes an antiviral nuclease induced by interferons. This genetic marker may one day be used to identify athletes with a higher genetic risk for shoulder dislocation. It will be important to replicate this finding in future studies.
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Affiliation(s)
- Stuart Kim
- Dev. Bio., Stanford University, Stanford, United States
| | - John P Kleimeyer
- Department of Orthopaedic Surgery, Stanford University, Stanford, United States
| | - Marwa A Ahmed
- Orthopedic Surgery, Stanford University, Stanford, United States
| | - Andy L Avins
- Division of Research, Kaiser Permanente Northern California, Oakland, United States
| | - Michael Fredericson
- Department of Orthopaedic Surgery, Stanford University, Stanford, United States
| | - Jason L Dragoo
- Orthopedic Surgery, Stanford University, Stanford, United States
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Roos AK, Avins AL, Ahmed MA, Kleimeyer JP, Roos TR, Fredericson M, Ioannidis JPA, Dragoo JL, Kim S. Two Genetic Loci associated with Medial Collateral Ligament Injury. Int J Sports Med 2017; 38:501-507. [PMID: 28482362 DOI: 10.1055/s-0043-104853] [Citation(s) in RCA: 3] [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] [Indexed: 10/19/2022]
Abstract
Medial collateral ligament (MCL) injuries are a common knee injury, especially in competitive athletes. Identifying genetic loci associated with MCL injury could shed light on its etiology. A genome-wide association screen was performed using data from the Research Program in Genes, Environment and Health (RPGEH) including 1 572 cases of MCL injury and 100 931 controls. 2 SNPs (rs80351309 and rs6083471) showed an association with MCL injury at genome-wide significance (p<5×10-8) with moderate effects (odds ratios=2.12 and 1.57, respectively). For rs80351309, the genotypes were imputed with only moderate accuracy, so this SNP should be viewed with caution until its association with MCL injury can be validated. The SNPs rs80351309 and rs6083471 show a statistically significant association with MCL injury. It will be important to replicate this finding in future studies.
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Affiliation(s)
- Andrew K Roos
- Dev. Bio., Stanford University, Stanford, United States
| | - Andy L Avins
- Division of Research, Kaiser Permanente Northern California, Oakland, United States
| | - Marwa A Ahmed
- Orthopedic Surgery, Stanford University, Stanford, United States
| | - John P Kleimeyer
- Department Orthopaedic Surgery, Stanford University, Stanford, United States
| | - Thomas R Roos
- Dev. Bio., Stanford University, Stanford, United States
| | - Michael Fredericson
- Department Orthopaedic Surgery, Stanford University, Stanford, United States
| | | | - Jason L Dragoo
- Department Orthopaedic Surgery, Stanford University, Stanford, United States
| | - Stuart Kim
- Dev. Bio., Stanford University, Stanford, United States
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Ahmed MA, Brick AA, Mohamed AA. An efficient adsorption of indigo carmine dye from aqueous solution on mesoporous Mg/Fe layered double hydroxide nanoparticles prepared by controlled sol-gel route. Chemosphere 2017; 174:280-288. [PMID: 28183053 DOI: 10.1016/j.chemosphere.2017.01.147] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Revised: 01/10/2017] [Accepted: 01/31/2017] [Indexed: 06/06/2023]
Abstract
A new approach for removal of indigo carmine blue (IC) dye which is extensively used in jeans manufacture was successfully performed on novel mesoporous [LDH] nanoparticles prepared by sol-gel route using CTAB as shape and pore directing agent. The physicochemical features were monitored by X-ray diffraction (XRD), Fourier transformer infra-red (FTIR), N2 adsorption-desorption isotherm, Field emission electron microscope (FESEM) and high resolution transmission electron microscope (HRTEM). The influence of reaction parameters affecting dye adsorption including contact time, initial dye concentration, pH and temperature were investigated. Textural analysis and HRTEM images indicate the existence of mesoporous spherical nanoparticles of size = 26 nm connected to each other's and embedded large numbers of mesopores of average pore radius = 43.5 Å. A successful adsorption of IC on LDH nanoparticles of surface area = 85.6 m2/g at various pH with maximum adsorption capacity = 62.8 mg/g at pH = 9.5. Langmuir model is more favorable to describe the adsorption of IC rather than Freundlich model which reflecting the preferential formation of monolayer on the surface of LDH. Both film diffusion and the intraparticle diffusion affect the dye adsorption. The values of enthalpy change (ΔH) for and (ΔS) are + 28.18 and + 0.118 kJ/mol, respectively indicating that the removal process is endothermic. The results indicated that LDH nanoparticles conserved a good activity even after five consecutive cycles of reuse. Our results suggest that mesoporous LDH nanoparticles are considered a potential novel adsorbent for remediation of wastewater containing IC.
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Affiliation(s)
- M A Ahmed
- Chemistry Department, Faculty of Science, Ain Shams University, Egypt.
| | - A A Brick
- Chemistry Department, Faculty of Science, Ain Shams University, Egypt
| | - A A Mohamed
- Chemistry Department, Faculty of Science, Ain Shams University, Egypt
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Kim SK, Roos TR, Roos AK, Kleimeyer JP, Ahmed MA, Goodlin GT, Fredericson M, Ioannidis JPA, Avins AL, Dragoo JL. Genome-wide association screens for Achilles tendon and ACL tears and tendinopathy. PLoS One 2017; 12:e0170422. [PMID: 28358823 PMCID: PMC5373512 DOI: 10.1371/journal.pone.0170422] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 01/04/2017] [Indexed: 11/18/2022] Open
Abstract
Achilles tendinopathy or rupture and anterior cruciate ligament (ACL) rupture are substantial injuries affecting athletes, associated with delayed recovery or inability to return to competition. To identify genetic markers that might be used to predict risk for these injuries, we performed genome-wide association screens for these injuries using data from the Genetic Epidemiology Research on Adult Health and Aging (GERA) cohort consisting of 102,979 individuals. We did not find any single nucleotide polymorphisms (SNPs) associated with either of these injuries with a p-value that was genome-wide significant (p<5x10-8). We found, however, four and three polymorphisms with p-values that were borderline significant (p<10-6) for Achilles tendon injury and ACL rupture, respectively. We then tested SNPs previously reported to be associated with either Achilles tendon injury or ACL rupture. None showed an association in our cohort with a false discovery rate of less than 5%. We obtained, however, moderate to weak evidence for replication in one case; specifically, rs4919510 in MIR608 had a p-value of 5.1x10-3 for association with Achilles tendon injury, corresponding to a 7% chance of false replication. Finally, we tested 2855 SNPs in 90 candidate genes for musculoskeletal injury, but did not find any that showed a significant association below a false discovery rate of 5%. We provide data containing summary statistics for the entire genome, which will be useful for future genetic studies on these injuries.
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Affiliation(s)
- Stuart K. Kim
- Department Developmental Biology, Stanford University Medical Center, Stanford CA, United States of America
| | - Thomas R. Roos
- Department Developmental Biology, Stanford University Medical Center, Stanford CA, United States of America
- Department Health Research and Policy, Division of Epidemiology, Stanford University Medical Center, Stanford CA, United States of America
| | - Andrew K. Roos
- Department Developmental Biology, Stanford University Medical Center, Stanford CA, United States of America
- Department Health Research and Policy, Division of Epidemiology, Stanford University Medical Center, Stanford CA, United States of America
| | - John P. Kleimeyer
- Department Orthopaedic Surgery, Stanford University Medical Center, Stanford CA, United States of America
| | - Marwa A. Ahmed
- Department Orthopaedic Surgery, Stanford University Medical Center, Stanford CA, United States of America
| | - Gabrielle T. Goodlin
- College of Medicine, California Northstate University, Elk Grove CA, United States of America
| | - Michael Fredericson
- Department Orthopaedic Surgery, Stanford University Medical Center, Stanford CA, United States of America
| | - John P. A. Ioannidis
- Department of Medicine, Stanford Prevention Research Center, Stanford University School of Medicine, Stanford CA, United States of America
- Department of Health Research and Policy, Division of Epidemiology, Stanford University School of Medicine, Stanford CA, United States of America
- Department of Statistics, Stanford University School of Humanities and Sciences, Stanford CA, United States of America
| | - Andrew L. Avins
- Kaiser Permanente Northern California, Division of Research, Oakland, California, United States of America
| | - Jason L. Dragoo
- Department Orthopaedic Surgery, Stanford University Medical Center, Stanford CA, United States of America
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Ting SY, Ishola OA, Ahmed MA, Tabana YM, Dahham S, Agha MT, Musa SF, Muhammed R, Than LTL, Sandai D. Metabolic adaptation via regulated enzyme degradation in the pathogenic yeast Candida albicans. J Mycol Med 2016; 27:98-108. [PMID: 28041812 DOI: 10.1016/j.mycmed.2016.12.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 06/11/2016] [Revised: 11/01/2016] [Accepted: 12/05/2016] [Indexed: 11/29/2022]
Abstract
The virulence of Candida albicans is dependent upon fitness attributes as well as virulence factors. These attributes include robust stress responses and metabolic flexibility. The assimilation of carbon sources is important for growth and essential for the establishment of infections by C. albicans. Previous studies showed that the C. albicans ICL1 genes, which encode the glyoxylate cycle enzymes isocitratelyase are required for growth on non-fermentable carbon sources such as lactate and oleic acid and were repressed by 2% glucose. In contrast to S. cerevsiae, the enzyme CaIcl1 was not destabilised by glucose, resulting with its metabolite remaining at high levels. Further glucose addition has caused CaIcl1 to lose its signal and mechanisms that trigger destabilization in response to glucose. Another purpose of this study was to test the stability of the Icl1 enzyme in response to the dietary sugars, fructose, and galactose. In the present study, the ICL1 mRNAs expression was quantified using Quantitative Real Time PCR, whereby the stability of protein was measured and quantified using Western blot and phosphoimager, and the replacing and cloning of ICL1 ORF by gene recombination and ubiquitin binding was conducted via co-immuno-precipitation. Following an analogous experimental approach, the analysis was repeated using S. cerevisiaeas a control. Both galactose and fructose were found to trigger the degradation of the ICL1 transcript in C. albicans. The Icl1 enzyme was stable following galactose addition but was degraded in response to fructose. C. albicans Icl1 (CaIcl1) was also subjected to fructose-accelerated degradation when expressed in S. cerevisiae, indicating that, although it lacks a ubiquitination site, CaIcl1 is sensitive to fructose-accelerated protein degradation. The addition of an ubiquitination site to CaIcl1 resulted in this enzyme becoming sensitive to galactose-accelerated degradation and increases its rate of degradation in the presence of fructose. It can be concluded that ubiquitin-independent pathways of fructose-accelerated enzyme degradation exist in C. albicans.
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Affiliation(s)
- S Y Ting
- Infectomics Cluster, advanced medical and dental institute, universiti Sains Malaysia, Jln Tun Hamdan Sheikh Tahir, 13200 Bertam Penang, Malaysia
| | - O A Ishola
- Infectomics Cluster, advanced medical and dental institute, universiti Sains Malaysia, Jln Tun Hamdan Sheikh Tahir, 13200 Bertam Penang, Malaysia
| | - M A Ahmed
- Infectomics Cluster, advanced medical and dental institute, universiti Sains Malaysia, Jln Tun Hamdan Sheikh Tahir, 13200 Bertam Penang, Malaysia
| | - Y M Tabana
- Infectomics Cluster, advanced medical and dental institute, universiti Sains Malaysia, Jln Tun Hamdan Sheikh Tahir, 13200 Bertam Penang, Malaysia
| | - S Dahham
- Infectomics Cluster, advanced medical and dental institute, universiti Sains Malaysia, Jln Tun Hamdan Sheikh Tahir, 13200 Bertam Penang, Malaysia
| | - M T Agha
- Infectomics Cluster, advanced medical and dental institute, universiti Sains Malaysia, Jln Tun Hamdan Sheikh Tahir, 13200 Bertam Penang, Malaysia
| | - S F Musa
- Infectomics Cluster, advanced medical and dental institute, universiti Sains Malaysia, Jln Tun Hamdan Sheikh Tahir, 13200 Bertam Penang, Malaysia
| | - R Muhammed
- Regenerative medicine cluster, advanced medical and dental institute, UniversitiSains Malaysia, 13200 Bertam Penang, Malaysia
| | - L T L Than
- Department of medical microbiology and parasitology, faculty of medicine and health sciences, universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - D Sandai
- Infectomics Cluster, advanced medical and dental institute, universiti Sains Malaysia, Jln Tun Hamdan Sheikh Tahir, 13200 Bertam Penang, Malaysia.
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Abstract
Ten years have passed since the publication of a large focus of Plasmodium knowlesi infections in the human population. The discovery was made during a molecular investigation of atypical P. malariae cases in the Kapit Health Division, Sarawak, Malaysian Borneo. Patients were more symptomatic with higher parasite counts than expected in P. malariae infections. The investigation found only P. knowlesi DNA present in patient blood samples. Morphological similarity had allowed P. knowlesi to masquerade as P. malariae during routine diagnostic microscopy for malaria. P. knowlesi, a malaria parasite of macaque monkeys, had entered the human population. The subsequent development of P. knowlesi species-specific PCR assays soon demonstrated that the entry was not confined to the Kapit Division but extended across island and mainland Southeast Asia. Relevant clinical descriptions and guidelines for the treatment and management of patents with P. knowlesi malaria were not available. Nor was it clear whether P. knowlesi had undergone a host switch event into the human population or if infections were zoonotic. The outputs of studies on P. knowlesi malaria during the past 10 years will be summarized, highlighting major findings within the context of pathophysiology, virulence, host switch events, treatment, control and importantly malaria elimination.
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Affiliation(s)
- M A Ahmed
- School of Medicine, University of St Andrews St Andrews, UK
| | - J Cox-Singh
- Department of Parasitology, Faculty of Medicine, University of Malaya Kuala Lumpur, Malaysia
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Afsar NS, Mahmud S, Tamanna RJ, Ahmed MA. A Psoriatic Arthritis Patient with Multiple Rare Complications case report and review of literature. Pulse (Basel) 2014. [DOI: 10.3329/pulse.v5i2.20266] [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: 11/05/2022] Open
Abstract
A 28 year old male patient of psoriasis was admitted in a tertiary care hospital of Bangladesh with typical skin lesions for 18 years, nail changes for 16 years, arthritis for 12 years and eye changes for 3 years. In addition he had other rare extra articular complications like severe aortic stenosis, moderate aortic regurgitation and mild mitral regurgitation. He had a positive family history of psoriasis. HLAB27 is positive and X-ray of hands and feet showed classical findings of psoriatic arthritis. We presented the case to show the early age of onset, severity of the disease with rapid progression and multiple extra articular complications. DOI: http://dx.doi.org/10.3329/pulse.v5i2.20266 Pulse Vol.5 July 2011 p.48-53
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Khedr EM, Kotb HI, Mostafa MG, Mohamad MF, Amr SA, Ahmed MA, Karim AA, Kamal SMM. Repetitive transcranial magnetic stimulation in neuropathic pain secondary to malignancy: a randomized clinical trial. Eur J Pain 2014; 19:519-27. [PMID: 25142867 DOI: 10.1002/ejp.576] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/07/2014] [Indexed: 12/31/2022]
Abstract
BACKGROUND Significant analgesic effects of repetitive transcranial magnetic stimulation (rTMS) have been found in several studies of patients with chronic pain of various origins, but never for malignancy. The objective of this study was to assess the efficacy of 10 sessions of rTMS over the primary motor cortex (M1) in patients suffering from malignant neuropathic pain. METHODS Thirty-four patients were randomly allocated into one of two groups to receive real (20 Hz, 10 s, 10 trains with 80% intensity) or sham rTMS daily for 10 consecutive days. Patients were evaluated using a verbal descriptor scale (VDS), a visual analogue scale (VAS), Leeds assessment of neuropathic symptoms and signs (LANSS) and Hamilton rating scale for depression (HAM-D) at baseline, after the first, fifth and 10th treatment sessions, and then 15 days and 1 month after treatment. RESULTS There were no significant differences between real and sham groups in the duration of illness or pain rating scores at the baseline. A significant 'Time × Group' interaction was recorded indicating that real and sham rTMS had different effects on the VDS, VAS, LANSS and HAM-D scales. Post-hoc testing showed that the group of patients treated with real rTMS had greater improvement in all scales that persisted up to 15 days, but were not present 1 month later. Significant positive correlations between the percentage of pain reduction and HAM-D after the 10th session and 15 days later were recorded. CONCLUSION The results demonstrate that 10 rTMS sessions over the M1 can induce short-term pain relief in malignant neuropathic pain.
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Affiliation(s)
- E M Khedr
- Department of Neurology, Assiut University Hospital, Egypt
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Ahmed MA, Hassan KH, Hassanein KMA, Waly H. Role of vitamin C and selenium in attenuation of nicotine induced oxidative stress, P53 and Bcl2 expression in adult rat spleen. ACTA ACUST UNITED AC 2014; 21:211-7. [PMID: 25128927 DOI: 10.1016/j.pathophys.2014.07.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Accepted: 07/24/2014] [Indexed: 11/29/2022]
Abstract
UNLABELLED Forty adult female rats were randomly divided into four groups: control, nicotine, nicotine+vitamin C and nicotine+selenium group. Splenic tissues concentrations of thiobarbituric acid reactive substances (TBARS), nitric oxide, superoxide dismutase (SOD) and catalase (CAT) activities were measured. The P53 and Bcl2 proteins were detected by Western blot and their expression in splenic tissues were measured by quantitative real time PCR in all groups. Compared to control group, nicotine increased the concentrations of TBARS and nitric oxide significantly. However, Vit. C or Se supplementation with nicotine caused a significant decrease in these concentrations. SOD and CAT activities of nicotine group decreased significantly compared to control group. Treatment with Vit. C or Se plays a significant role in elevation of SOD and CAT activities. In splenic tissues, nicotine significantly decreases the protein levels and the mRNA expression of P53 and increases the protein levels of Bcl2 and its expression. Administration of Vit. C. to nicotine-treated rats completely reversed the decrease in P53 levels and its mRNA expression and the increase in Bcl2 levels and its mRNA expression to the control values. In contrast, Se administration did not induce any significant changes in these genes levels or expressions compared to nicotine group. CONCLUSION Vit. C supplementation to nicotine treated rats was more effective than selenium in attenuation of nicotine-induced oxidative stress, p53 and Bcl2 expression in rat spleen tissues.
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Affiliation(s)
- Marwa A Ahmed
- Medical Physiology Department, Faculty of Medicine, Assiut University, Assiut 71526, Egypt.
| | - K H Hassan
- Zoology Department, Faculty of Science, Assiut University, Assiut 71526, Egypt
| | - Khaled M A Hassanein
- Pathology & Clinical Pathology Department, Faculty of Veterinary Medicine, Assiut University, Assiut 71526, Egypt
| | - H Waly
- Zoology Department, Faculty of Science, Assiut University, Assiut 71526, Egypt
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Qaeed MA, Ibrahim K, Saron KMA, Ahmed MA, Allam NK. Low-temperature solution-processed flexible solar cells based on (In,Ga)N nanocubes. ACS Appl Mater Interfaces 2014; 6:9925-9931. [PMID: 24937197 DOI: 10.1021/am502217b] [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] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Indium gallium nitride nanocubes were syntheized via a low-temperature chemical route. Energy-dispersive X-ray spectroscopy and X-ray diffraction analyses confirmed the successful fabrication of (In,Ga)N with various indium mole fractions. The bandgap of the material was tunded as a function of the indium content. The fabricated nanocubes showed a deep level photoluminescence emission at 734 nm as well as in the visible region at 435-520 nm. The Hall effect measurements showed the hole concentration to constantly increase from 6.2 × 10(16) to 2.3 × 10(18) cm(-3), while the hole mobility to decrease from 0.92 to 0.1 cm(2) /(V s) as the doping ratio increases from 0.005 to 0.025 cm(-3). The solar cell device made of nanocubes film containing 0.4 indium on flexible substrates showed a short-circuit current density of 12.47 mA/cm(2) and an open-circuit voltage (Voc) of 0.48 V with 54% fill factor. The relationship between Voc and indium content in the fabricated films was also investigated.
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Affiliation(s)
- M A Qaeed
- Nano-Optoelectronics Research and Technology Laboratory, School of Physics, Universiti Sains Malaysia , 11800 Penang, Malaysia
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Abd Allah ESH, Ahmed MA, Abdel Mola AF. Comparative study of the effect of verapamil and vitamin D on iron overload-induced oxidative stress and cardiac structural changes in adult male rats. ACTA ACUST UNITED AC 2014; 21:293-300. [PMID: 25092628 DOI: 10.1016/j.pathophys.2014.06.002] [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: 02/11/2014] [Revised: 05/24/2014] [Accepted: 06/11/2014] [Indexed: 01/17/2023]
Abstract
The present study was designed to compare the effect of verapamil and vitamin D on the expression of the voltage-dependent LTCC alpha 1c subunit (Cav1.2) and thereby on iron overload-induced cardiac dysfunction in adult male rat. Forty rats were randomly divided into four groups. Control group received the vehicle, iron overload group received ferrous sulfate intraperitoneally (IP) for 4 weeks, iron overload+verapamil received ferrous sulfate and verapamil IP concurrently for 4 weeks and iron overload+vitamin D group received ferrous sulfate IP and vitamin D3 orally concurrently for 4 weeks. Serum ferritin, total antioxidant capacity (TAC), total peroxide (TP) and cardiac iron and calcium were determined. Oxidative stress index (OSI) was calculated. Histopathological studies using H&E, Masson trichrome and Prussian blue stains and immunohistochemical studies using Cav1.2 antibody were also carried out. Administration of ferrous sulfate induced a significant increase in serum ferritin, OSI, cardiac iron and calcium contents. Moreover, cardiomyocytes were degenerated and the expression of Cav1.2 protein was increased in iron overload group as compared to control. Verapamil decreased ferrous sulfate-induced increase in serum ferritin, OSI and cardiac iron deposition. In addition, verapamil improved myocardial degeneration and decreased the expression of Cav1.2 protein. In contrast, vitamin D produced insignificant changes in ferrous sulfate-induced increase in cardiac iron content, myocardial degeneration and the expression of Cav1.2 protein. These results indicate that verapamil has a protective effect against iron overload-induced cardiac dysfunction, oxidative stress and structural changes, while vitamin D has an insignificant effect on these parameters.
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Affiliation(s)
- Eman S H Abd Allah
- Medical Physiology Department, Faculty of Medicine, Assiut University, Assiut, Egypt.
| | - Marwa A Ahmed
- Medical Physiology Department, Faculty of Medicine, Assiut University, Assiut, Egypt
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Ahmed MA, Kurkar A. Effects of opioid (tramadol) treatment on testicular functions in adult male rats: The role of nitric oxide and oxidative stress. Clin Exp Pharmacol Physiol 2014; 41:317-23. [DOI: 10.1111/1440-1681.12213] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Revised: 11/24/2013] [Accepted: 12/03/2013] [Indexed: 11/27/2022]
Affiliation(s)
- Marwa A Ahmed
- Department of Physiology; Faculty of Medicine; Assiut University; Assiut Egypt
| | - Adel Kurkar
- Department of Urology; Faculty of Medicine; Assiut University; Assiut Egypt
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Ahmed MA. Effect of angiotensin II type 1 receptor blocker on renal function, arterial blood pressure and parathyroid hormone related protein over expression in cadmium induced nephrotoxicity in adult male rats. Int J Physiol Pathophysiol Pharmacol 2013; 5:109-119. [PMID: 23750309 PMCID: PMC3669739] [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] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Accepted: 05/14/2013] [Indexed: 06/02/2023]
Abstract
OBJECTIVE To study the possible effect of angiotensin II type 1 Receptor blocker (AT1 blocker) on renal function, arterial blood pressure and parathyroid hormone related protein over expression in cadmium induced nephrotoxicity in adult male rats. Forty five rats were divided randomly into a control (group I), group II, received cadmium chloride at a dose of 5 mg/kg/day, orally, for nine weeks, group III received telmisartan (TEL) treatment (1 mg/kg/day, orally) one week before cadmium administration and continued for ten weeks. RESULTS Telmisartan significantly reduced blood urea nitrogen (BUN) and serum creatinine levels which were increased significantly by cadmium. Telmisartan significantly suppressed lipid peroxidation, compensated deficits in the antioxidant defenses (super oxide dismutase (SOD) level and catalase activity), decreased the elevations of nitric oxide (NO) and cadmium ion concentrations in renal tissue observed in Cd-treated rats. Group III had a significant decrease of urinary levels of total protein, N-acetyl-β-d-glucosaminidase (NAG), alkaline phosphatase (ALP) and γ-glutamyl-transpeptidase (GGT) and urinary 8-isoprostanes than those of group II. Telmisartan decreased the systolic blood pressure significantly than those of group II. Histopathological examination revealed that cadmium-induced renal tissue damage was ameliorated by telmisartan treatment. Immunohistochemical analysis revealed that telmisartan significantly decreased the cadmium-induced overexpression of parathyroid hormone receptor 1 (PTHR1) in renal tissue. RT-PCR analysis showed that Cd increased renal expression of PTHrP; however telmisartan could decrease the expression of PTHrP in group III. CONCLUSION Blocking AT1 receptors significantly decreases PTHrP over expression and ameliorates renal dysfunction in Cd induced nephrotoxicity. These data suggest that Ang II might contribute to pathophysiology and deleterious effects in cadmium nephrotoxicity.
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Affiliation(s)
- Marwa A Ahmed
- Department of Medical Physiology, Faculty of Medicine, Assiut University Egypt
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Ahmed MA, Hassanein KMA. Effects of estrogen on hyperglycemia and liver dysfunction in diabetic male rats. Int J Physiol Pathophysiol Pharmacol 2012; 4:156-166. [PMID: 23071873 PMCID: PMC3466492] [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] [Subscribe] [Scholar Register] [Received: 07/07/2012] [Accepted: 08/28/2012] [Indexed: 06/01/2023]
Abstract
OBJECTIVE To study the possible beneficial effect of estrogen (17β-estradiol E(2)) on hyperglycemia, oxidative stress and liver dysfunctions in STZ-induced diabetic rats. A total of 40 albino male rats were randomly divided into four groups: a control group (I), a diabetic group (II), a group given 17β estradiol (E(2)) for 15 days (III), and a diabetic group given E(2) for 30 days (IV). Diabetes was induced in the rats by 65 mg/kg streptozosin (STZ) via an intraperitoneal (i.p.) injection. E(2) was given in a dose of 500ug/kg/day by oral gavage. RESULTS E(2) administration significantly lowered plasma glucose levels, increased plasma insulin levels, and improved glucose tolerance of groups III and IV. In addition, E(2) enhanced glutathione peroxidase (GPX) and reduced lipid peroxidation in the hepatic tissues (as compared to diabetic rats). E(2) caused significant decrease of plasmatic phosphatase alkaline (PAL), lactate dehydrogenase (LDH), aspartate and lactate transaminases (AST and ALT) activities of group III and IV compared to group II. Moreover, E(2) restored the histological structure of the liver and pancreas of treated groups and increased the insulin receptors expression in the liver of groups III and IV compared to diabetic rats. Notably, these beneficial effects of E(2) on diabetic rats were more prominent in group IV compared to those of group III. CONCLUSION E(2) has a beneficial effect on hyperglycemia, oxidative stress and ameliorates the liver dysfunction in diabetic rats and these effects may be mediated through stimulating β-cell proliferation in pancreas and increased the insulin receptor expression in the liver tissues.
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Affiliation(s)
- Marwa A Ahmed
- Department of Physiology Faculty of Medicine, Assiut UniversityAssiut 71526, Egypt
| | - Khaled M A Hassanein
- Department of Pathology and Clinical Pathology, Faculty of Veterinary Medicine, Assiut UniversityAssiut 71526, Egypt
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Ahmed MA, Elosaily GM. Role of Oxytocin in deceleration of early atherosclerotic inflammatory processes in adult male rats. Int J Clin Exp Med 2011; 4:169-78. [PMID: 21977229 PMCID: PMC3182508] [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: 06/14/2011] [Accepted: 08/26/2011] [Indexed: 05/31/2023]
Abstract
OBJECTIVE The study aimed to examine the effect of exogenous OT administration on the inflammation and atherosclerosis in adult male rats and its possible mechanisms. Thirty adult male rats equally divided into three groups. Control group fed regular diet; group II fed control diet supplemented with L-methionine for 10 weeks. Group III received L-methionine and oxytocin treatment for 10 weeks. RT-PCR analysis showed that OT administration increased oxytocin receptor mRNA (2 fold, P, 0.05). Blood samples were evaluated for total homocysteine, interlukin-6 (IL-6), monocyte chemoatrratant protein-1 (MCP-1) and C-reactive protein (CRP) by ELIZA, lipid profile, nitric oxide (NO), malondialdehyde (MDA) and reduced glutathione (GSH) were determined. Specimens from aorta were processed for immunohistochemical staining for Aorta nuclear factor _B (NF-κB) p65 protein. Result showed that OT administration to group III decreased the plasma levels IL-6, MCP-1 and CRP levels which were elevated in group II. Moreover, there was decrease of the oxidative stress of group III in terms of increased plasma levels of NO and GSH and decreased plasma levels of MDA in blood. In addition, rats of group II showed histological abnormalities manifested by thickening and ulceration of the aortic wall. Marked increased expression of NF-κB in aorta of in group II was detected. However, OT administration restores the histological structure of the aorta and decreased the expression of NF-κB in aorta of group III similar to the control group. CONCLUSION OT has anti inflammatory pathway in atherosclerosis as it decelerates atherosclerosis by decreasing the proinflammatory responses through many mechanisms, mainly the up regulation of its receptors.
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