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Nagy A, Mohallal EME, El-Kafrawy S, Saber SA. Which is a stronger predictor of the abundance of Dorcas Gazelle, Gazella dorcas in the Eastern desert of Egypt: human or natural factors? Zoology in the Middle East 2022. [DOI: 10.1080/09397140.2022.2109818] [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: 10/15/2022]
Affiliation(s)
- Abdullah Nagy
- Faculty of Science, Al Azhar University in Cairo, Egypt
| | | | - Sameh El-Kafrawy
- National Authority for Remote Sensing and Space Sciences, Ciro, Egypt
| | - Samy A. Saber
- Faculty of Science, Al Azhar University in Cairo, Egypt
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Atef MM, Amer AI, Hafez YM, Elsebaey MA, Saber SA, Abd El-Khalik SR. Long non-coding RNA EGFR-AS1 in colorectal cancer: potential role in tumorigenesis and survival via miRNA-133b sponge and EGFR/STAT3 axis regulation. Br J Biomed Sci 2021; 78:122-129. [PMID: 33211633 DOI: 10.1080/09674845.2020.1853913] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Colorectal cancer is one of the most common cancers worldwide and a major cause of cancer-related death. Thus molecular biomarkers for colorectal cancer have been proposed. The role of long non-coding RNA EGFR-AS1 in colorectal cancer is still unclear. We aimed to evaluate its expression in different stages of colorectal cancer and determine any possible role in regulating the miR‑133b/EGFR/STAT3 signalling pathway. MATERIALS AND METHODS The relative expression of EGFR-AS1 and miR‑133b were evaluated by quantitative real-time RT-transcription PCR in 130 colorectal cancer samples and 30 normal tissues. EGFR expression was assessed using immunohistochemistry. Furthermore, levels of p-EGFR, p-STAT3, and apoptotic proteins were determined by ELISA. RESULTS Both EGFR-AS1 and EGFR overexpression were positively linked with colorectal cancer status (both p < 0.01), grade (both p < 0.01), and metastasis (P < 0.01 and p = 0.019 respectively). EGFR-AS1 and miR-133b were significantly inversely correlated (P < 0.01). Low expression of miR-133b was inversely associated with overexpressed EGFR and increased p-STAT3 levels. EGFR-AS1 was an independent prognostic factor for survival of colorectal cancer patients (P < 0.01, HR 2.06; 95% CI 1.32-3.19) where low EGFR-AS1 expression was associated with higher survival rate (p = 0.003). CONCLUSION EGFR-AS1 may have a role in colorectal cancer by regulation of miR‑133b/EGFR/STAT3 signalling. It may be a potential biomarker for early diagnosis and predicting the survival rate of colorectal cancer.
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Affiliation(s)
- M M Atef
- Medical Biochemistry Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - A I Amer
- Pathology Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Y M Hafez
- Internal Medicine Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - M A Elsebaey
- Internal Medicine Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - S A Saber
- General Surgery Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - S R Abd El-Khalik
- Medical Biochemistry Department, Faculty of Medicine, Tanta University, Tanta, Egypt
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Gewily DI, Mahmoud FA, Saber SA, ElSalkh BA, El-Dahshan AA, Abumandour MMA, Kandyel RM, Gadel-Rab AG. Ultrastructural comparison between the tongue of two reptilian species endemic in Egyptian fauna; Bosc's fringe-toed lizard Acanthodactylus boskianus and Sinai fan-fingered gecko Ptyodactylus guttatus. Microsc Res Tech 2021; 84:1977-1991. [PMID: 33720486 DOI: 10.1002/jemt.23753] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 02/03/2021] [Accepted: 02/25/2021] [Indexed: 12/21/2022]
Abstract
The current observations focused on the ultrastructure comparison between the tongue of two reptile species endemic the Egyptian fauna; Bosc's fringe-toed lizard Acanthodactylus boskianus and Sinai fan-fingered gecko Ptyodactylus guttatus to exhibit the relationship between the lingual epithelium and its function according to their specific feeding strategy. A. boskianus possessed triangular elongated tongue with bifurcated tapering apex and wide base while; the P. guttatus had a triangular flattened tongue with conical shallow bifurcated apex and broad base. The ventral surface of the lingual apex of A. boskianus had transverse while in P. guttatus had two oval pads and median ventral groove. Both surfaces of the tongue of both examined species are covered by stratified squamous epithelium with great variability of degree of keratinization. The dorsal epithelium formed flattened and conical filiform papillae in A. boskianus, while in P. guttatus formed cylindrical papillae, conical, and tall filiform ones. Few taste buds are observed on the fore-tongue but increase on the mid-tongue of A. boskianus, while in P. guttatus, numerous taste buds are distributed on the fore-tongue and mid-tongue. Both surfaces of the laryngeal mound of both examined species provided with numerous of cilia and orifices of laryngeal gland. The present results confirmed that the tongue of A. boskianus acts as a chemoreceptor organ to follow pheromone trails of prey and mates. While in P. guttatus the tongue may play an important role in the feeding mechanism and act as a chemoreceptor organ.
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Affiliation(s)
- Doaa I Gewily
- Department of Zoology, Faculty of Science (Girls), Al-Azhar University, Cairo, Egypt
| | - Fatma A Mahmoud
- Department of Zoology, Faculty of Science, Assuit University, Assiut, Egypt
| | - Samy A Saber
- Department of Zoology, Faculty of Science, Al-Azhar University, Cairo, Egypt
| | - Boshra A ElSalkh
- Department of Zoology, Faculty of Science (Girls), Al-Azhar University, Cairo, Egypt
| | - Asmaa A El-Dahshan
- Department of Zoology, Faculty of Science (Girls), Al-Azhar University, Cairo, Egypt
| | - Mohamed M A Abumandour
- Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt
| | - Ramadan M Kandyel
- Department of Zoology, Faculty of Science, Tanta University, Tanta, Egypt
| | - Ali G Gadel-Rab
- Department of Zoology, Faculty of Science, Al-Azhar University, Assiut, Egypt
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Milto KD, Saber SA, Nagy AM, Nazarov RA, Melnikov DA, Ananjeva NB. First Report on the Reptile Diversity of Wadi El Gemal National Park, Eastern Desert, Egypt. RUSS J HERPETOL 2019. [DOI: 10.30906/1026-2296-2019-26-3-175-184] [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: 11/05/2022]
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Gadel-Rab AG, Mahmoud FA, Saber SA, ElSalkh BA, El-Dahshan AA, Gewily DI. Comparative Functional Analysis of the Anatomy of the appendicular skeleton in two reptilian species. ACTA ACUST UNITED AC 2018. [DOI: 10.21608/ejhm.2018.18353] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Gad El-Rab AG, Shawki NA, Saber SA. Morpho-Functional Adaptations of the Lingual Epithelium of Two Bird Species Which Have Different Feeding Habits. ACTA ACUST UNITED AC 2017. [DOI: 10.12816/0041069] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Thabet AA, Maas AE, Saber SA, Tarrant AM. Assembly of a reference transcriptome for the gymnosome pteropod Clione limacina and profiling responses to short-term CO2 exposure. Mar Genomics 2017; 34:39-45. [DOI: 10.1016/j.margen.2017.03.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 03/17/2017] [Accepted: 03/17/2017] [Indexed: 01/03/2023]
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Siu-Ting K, Gower DJ, Pisani D, Kassahun R, Gebresenbet F, Menegon M, Mengistu AA, Saber SA, de Sá R, Wilkinson M, Loader SP. Evolutionary relationships of the critically endangered frog Ericabatrachus baleensis Largen, 1991 with notes on incorporating previously unsampled taxa into large-scale phylogenetic analyses. BMC Evol Biol 2014; 14:44. [PMID: 24612655 PMCID: PMC4008257 DOI: 10.1186/1471-2148-14-44] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Accepted: 02/25/2014] [Indexed: 12/01/2022] Open
Abstract
BACKGROUND The phylogenetic relationships of many taxa remain poorly known because of a lack of appropriate data and/or analyses. Despite substantial recent advances, amphibian phylogeny remains poorly resolved in many instances. The phylogenetic relationships of the Ethiopian endemic monotypic genus Ericabatrachus has been addressed thus far only with phenotypic data and remains contentious. RESULTS We obtained fresh samples of the now rare and Critically Endangered Ericabatrachus baleensis and generated DNA sequences for two mitochondrial and four nuclear genes. Analyses of these new data using de novo and constrained-tree phylogenetic reconstructions strongly support a close relationship between Ericabatrachus and Petropedetes, and allow us to reject previously proposed alternative hypotheses of a close relationship with cacosternines or Phrynobatrachus. CONCLUSIONS We discuss the implications of our results for the taxonomy, biogeography and conservation of E. baleensis, and suggest a two-tiered approach to the inclusion and analyses of new data in order to assess the phylogenetic relationships of previously unsampled taxa. Such approaches will be important in the future given the increasing availability of relevant mega-alignments and potential framework phylogenies.
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Affiliation(s)
- Karen Siu-Ting
- Molecular Evolution and Bioinformatics Lab, National University of Ireland, Maynooth, Co. Kildare, Ireland
- School of Biological Sciences and School of Earth Sciences, Woodland Road, Bristol BS8 1UG, UK
| | - David J Gower
- Department of Life Sciences, The Natural History Museum, Cromwell Road, London SW7 5BD, UK
| | - Davide Pisani
- Molecular Evolution and Bioinformatics Lab, National University of Ireland, Maynooth, Co. Kildare, Ireland
- School of Biological Sciences and School of Earth Sciences, Woodland Road, Bristol BS8 1UG, UK
| | - Roman Kassahun
- Ethiopian Wildlife Conservation Authority, P.O. Box 386, Addis Ababa, Ethiopia
| | - Fikirte Gebresenbet
- Department of Zoology, Oklahoma State University, 311 D Life Sciences West, Stillwater, OK 74078, USA
| | - Michele Menegon
- Tropical Biodiversity section, MUSE - Museo delle Scienze di Trento, Viale del Lavoro e della Scienza 3, Trento 38123, Italy
| | - Abebe A Mengistu
- Department of Environmental Sciences, University of Basel, Biogeography Research Group, Basel 4056, Switzerland
| | - Samy A Saber
- Zoology Department, Faculty of Science, Al-Azhar University, Assiut, Egypt
| | - Rafael de Sá
- Department of Biology, University of Richmond, Richmond, VA 23173, USA
| | - Mark Wilkinson
- Department of Life Sciences, The Natural History Museum, Cromwell Road, London SW7 5BD, UK
| | - Simon P Loader
- Department of Environmental Sciences, University of Basel, Biogeography Research Group, Basel 4056, Switzerland
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Saber SA, al-Deen A, al-Shareef MF, Rashed AA. Ecology of some sympatric reptilian species from Egypt with special reference to helminthic parasites: Ptyodactylus guttatus and Tarentola annularis. J Egypt Soc Parasitol 1995; 25:395-406. [PMID: 7665935] [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: 01/26/2023]
Abstract
Ptyodactylus guttatus and Tarentola annularis are sympatric throughout most of their geographical distribution in Egypt. Their temporal activities, feeding habits, food items, feeding strategy are almost similar. These species have been harboured 6 species of nematodes, one species of trematodes in addition to helminthic cysts of cestodes in the liver of each specific host.
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Affiliation(s)
- S A Saber
- Department of Zoology, Faculty of Science, Al Azhar University, Nasr City, Cairo, Egypt
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Saber SA. Ecological studies of Chalcides ocellatus (Forskal, 1775) and Hemidactylus turcicus (Linnaeus, 1758) from Egypt with special reference to helminthic parasites. J Egypt Soc Parasitol 1995; 25:145-56. [PMID: 7602157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Chalcides ocellatus and Hemidactylus turcicus are sympatric throughout most of their geographical distribution in Egypt. Their temporal activities, food items and feeding strategy are almost similar. Chalcides ocellatus harboured 5 species of nematodes and one species of cestode, while Hemidactylus turcicus harboured only 3 species of nematodes. Two species of nematodes occurred in both hosts.
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