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Alzahrani OR, Alshehri MA, Alasmari A, Ibrahim SD, Oyouni AA, Siddiqui ZH. Evaluation of genetic diversity among Saudi Arabian and Egyptian cultivars of alfalfa ( Medicago sativa L.) using ISSR and SCoT markers. Journal of Taibah University for Science 2023. [DOI: 10.1080/16583655.2023.2194187] [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] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
Affiliation(s)
- Othman R. Alzahrani
- Department of Biology, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
- Genome and Biotechnology Unit, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
| | - M. Ali Alshehri
- Department of Biology, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
- Genome and Biotechnology Unit, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
| | - A. Alasmari
- Department of Biology, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
- Genome and Biotechnology Unit, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
| | - S. D. Ibrahim
- Agricultural Genetic Engineering Research Institute (AGERI), ARC, Giza, Egypt
| | - Atif A. Oyouni
- Department of Biology, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
- Genome and Biotechnology Unit, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
| | - Zahid H. Siddiqui
- Department of Biology, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
- Genome and Biotechnology Unit, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
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Naresh-Kumar G, Alasmari A, Kusch G, Edwards PR, Martin RW, Mingard KP, Trager-Cowan C. Metrology of crystal defects through intensity variations in secondary electrons from the diffraction of primary electrons in a scanning electron microscope. Ultramicroscopy 2020; 213:112977. [PMID: 32361281 DOI: 10.1016/j.ultramic.2020.112977] [Citation(s) in RCA: 2] [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: 02/03/2020] [Accepted: 03/15/2020] [Indexed: 11/28/2022]
Abstract
Understanding defects and their roles in plastic deformation and device reliability is important for the development of a wide range of novel materials for the next generation of electronic and optoelectronic devices. We introduce the use of gaseous secondary electron detectors in a variable pressure scanning electron microscope for non-destructive imaging of extended defects using electron channelling contrast imaging. We demonstrate that all scattered electrons, including the secondary electrons, can provide diffraction contrast as long as the sample is positioned appropriately with respect to the incident electron beam. Extracting diffraction information through monitoring the modulation of the intensity of secondary electrons as a result of diffraction of the incident electron beam, opens up the possibility of performing low energy electron channelling contrast imaging to characterise low atomic weight and ultra-thin film materials. Our methodology can be adopted for large area, nanoscale structural characterisation of a wide range of crystalline materials including metals and semiconductors, and we illustrate this using the examples of aluminium nitride and gallium nitride. The capability of performing electron channelling contrast imaging, using the variable pressure mode, extends the application of this technique to insulators, which usually require conducting coatings on the sample surface for traditional scanning electron microscope based microstructural characterisation.
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Affiliation(s)
- G Naresh-Kumar
- Department of Physics, SUPA, University of Strathclyde, Glasgow G4 0NG, United Kingdom.
| | - A Alasmari
- Department of Physics, SUPA, University of Strathclyde, Glasgow G4 0NG, United Kingdom
| | - G Kusch
- Department of Physics, SUPA, University of Strathclyde, Glasgow G4 0NG, United Kingdom
| | - P R Edwards
- Department of Physics, SUPA, University of Strathclyde, Glasgow G4 0NG, United Kingdom
| | - R W Martin
- Department of Physics, SUPA, University of Strathclyde, Glasgow G4 0NG, United Kingdom
| | - K P Mingard
- National Physical Laboratory, Middlesex TW11 0LW, United Kingdom
| | - C Trager-Cowan
- Department of Physics, SUPA, University of Strathclyde, Glasgow G4 0NG, United Kingdom
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Almannai M, Alasmari A, Alqasmi A, Faqeih E, Al Mutairi F, Alotaibi M, Samman MM, Eyaid W, Aljadhai YI, Shamseldin HE, Craigen W, Alkuraya FS. Expanding the phenotype of SLC25A42-associated mitochondrial encephalomyopathy. Clin Genet 2018; 93:1097-1102. [PMID: 29327420 DOI: 10.1111/cge.13210] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 12/22/2017] [Accepted: 01/02/2018] [Indexed: 12/18/2022]
Abstract
SLC25A42 gene encodes an inner mitochondrial membrane protein that imports Coenzyme A into the mitochondrial matrix. A mutation in this gene was recently reported in a subject born to consanguineous parents who presented with mitochondrial myopathy with muscle weakness and lactic acidosis. In this report, we present 12 additional individuals with the same founder mutation who presented with variable manifestations ranging from asymptomatic lactic acidosis to a severe phenotype characterized by developmental regression and epilepsy. Our report confirms the link between SLC25A42 and mitochondrial disease in humans, and suggests that pathogenic variants in SLC25A42 should be interpreted with the understanding that the associated phenotype may be highly variable.
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Affiliation(s)
- M Almannai
- Section of Medical Genetics, Children's Hospital, King Fahad Medical City, Riyadh, Saudi Arabia
| | - A Alasmari
- Section of Medical Genetics, Children's Hospital, King Fahad Medical City, Riyadh, Saudi Arabia
| | - A Alqasmi
- Children's Hospital, King Saud Medical City, Riyadh, Saudi Arabia
| | - E Faqeih
- Section of Medical Genetics, Children's Hospital, King Fahad Medical City, Riyadh, Saudi Arabia
| | - F Al Mutairi
- Medical Genetics Division, Department of Pediatrics, King Abdullah International Medical Research Centre, King Saud bin Abdulaziz University for Health Sciences, King Abdulaziz Medical City, Riyadh, Saudi Arabia
| | - M Alotaibi
- Children's Hospital, King Saud Medical City, Riyadh, Saudi Arabia
| | - M M Samman
- Pathology and Clinical Laboratory Administration, Section of Molecular Pathology, King Fahad Medical City, Riyadh, Saudi Arabia
| | - W Eyaid
- Medical Genetics Division, Department of Pediatrics, King Abdullah International Medical Research Centre, King Saud bin Abdulaziz University for Health Sciences, King Abdulaziz Medical City, Riyadh, Saudi Arabia
| | - Y I Aljadhai
- Department of Neuroimaging and Intervention, Medical Imaging Administration, King Fahad Medical City, Riyadh, Saudi Arabia
| | - H E Shamseldin
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - W Craigen
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - F S Alkuraya
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia.,Department of Anatomy and Cell Biology, College of Medicine, Alfaisal University, Riyadh, Saudi Arabia.,Saudi Human Genome Program, King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
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Bejar C, Brahimi N, Alasmari A, Descamps V. Hyperesthésie du cuir chevelu : un marqueur du syndrome de Williams-Beuren ? Ann Dermatol Venereol 2015. [DOI: 10.1016/j.annder.2015.10.364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Azzolini E, Alrashdi Y, Alasmari A, Alwahibi S, Nante N. Venomous bites and stings. Eur J Public Health 2013. [DOI: 10.1093/eurpub/ckt124.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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