29 results on '"Salim Al-Rejaie"'
Search Results
2. Deep Learning-Enabled Dynamic Model for Nutrient Status Detection of Aquaponically Grown Plants
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Mohamed Farag Taha, Hanping Mao, Samar Mousa, Lei Zhou, Yafei Wang, Gamal Elmasry, Salim Al-Rejaie, Abdallah Elshawadfy Elwakeel, Yazhou Wei, and Zhengjun Qiu
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aquaponics ,long short-term memory (LSTM) ,autoencoder ,convolutional neural networks (CNN) ,nutrition stress ,Agriculture - Abstract
Developing models to assess the nutrient status of plants at various growth stages is challenging due to the dynamic nature of plant development. Hence, this study encoded spatiotemporal information of plants within a single time-series model to precisely assess the nutrient status of aquaponically cultivated lettuce. In particular, the long short-term memory (LSTM) and deep autoencoder (DAE) approaches were combined to classify aquaponically grown lettuce plants according to their nutrient status. The proposed approach was validated using extensive sequential hyperspectral reflectance measurements acquired from lettuce leaves at different growth stages across the growing season. A DAE was used to extract distinct features from each sequential spectral dataset time step. These features were used as input to an LSTM model to classify lettuce grown across a gradient of nutrient levels. The results demonstrated that the LSTM outperformed the convolutional neural network (CNN) and multi-class support vector machine (MCSVM) approaches. Also, features selected by the DAE showed better performance compared to features extracted using both genetic algorithms (GAs) and sequential forward selection (SFS). The hybridization of deep autoencoder and long short-term memory (DAE-LSTM) obtained the highest overall classification accuracy of 94%. The suggested methodology presents a pathway to automating the process of nutrient status diagnosis throughout the entire plant life cycle, with the LSTM technique poised to assume a pivotal role in forthcoming time-series analyses for precision agriculture.
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- 2024
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3. Multichannel imaging for monitoring chemical composition and germination capacity of cowpea (Vigna unguiculata) seeds during development and maturation
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Gamal ElMasry, Nasser Mandour, Yahya Ejeez, Didier Demilly, Salim Al-Rejaie, Jerome Verdier, Etienne Belin, and David Rousseau
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Multispectral imaging ,Multichannel imaging ,Chemical imaging ,Spectral analysis ,Seeds ,Cowpea ,Agriculture ,Agriculture (General) ,S1-972 - Abstract
This study aimed to set a computer-integrated multichannel spectral imaging system as a high-throughput phenotyping tool for the analysis of individual cowpea seeds harvested at different developmental stages. The changes in germination capacity and variations in moisture, protein and different sugars during twelve stages of seed development from 10 to 32 days after anthesis were non-destructively monitored. Multispectral data at 20 discrete wavelengths in the ultraviolet, visible and near infrared regions were extracted from individual seeds and then modelled using partial least squares regression and linear discriminant analysis (LDA) models. The developed multivariate models were accurate enough for monitoring all possible changes occurred in moisture, protein and sugar contents with coefficients of determination in prediction Rp2 of 0.93, 0.80 and 0.78 and root mean square errors in prediction (RMSEP) of 6.045%, 2.236% and 0.890%, respectively. The accuracy of PLS models in predicting individual sugars such as verbascose and stachyose was reasonable with Rp2 of 0.87 and 0.87 and RMSEP of 0.071% and 0.485%, respectively; but for the prediction of sucrose and raffinose the accuracy was relatively limited with Rp2 of 0.24 and 0.66 and RMSEP of 0.567% and 0.045%, respectively. The developed LDA model was robust in classifying the seeds based on their germination capacity with overall correct classification of 96.33% and 95.67% in the training and validation datasets, respectively. With these levels of accuracy, the proposed multichannel spectral imaging system designed for single seeds could be an effective choice as a rapid screening and non-destructive technique for identifying the ideal harvesting time of cowpea seeds based on their chemical composition and germination capacity. Moreover, the development of chemical images of the major constituents along with classification images confirmed the usefulness of the proposed technique as a non-destructive tool for estimating the concentrations and spatial distributions of moisture, protein and sugars during different developmental stages of cowpea seeds.
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- 2022
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4. Non-Invasive Assessment of the Intraventricular Pressure Using Novel Color M-Mode Echocardiography in Animal Studies: Current Status and Future Perspectives in Veterinary Medicine
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Ahmed S. Mandour, Ahmed Farag, Mahmoud A. Y. Helal, Gamal El-Masry, Salim Al-Rejaie, Ken Takahashi, Tomohiko Yoshida, Lina Hamabe, and Ryou Tanaka
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color M-mode echocardiography ,intraventricular pressure gradients ,diastolic function ,echocardiography ,heart failure ,animal models ,Veterinary medicine ,SF600-1100 ,Zoology ,QL1-991 - Abstract
The assessment of diastolic function has received great interest in order to comprehend its crucial role in the pathophysiology of heart failure and for the early identification of cardiac events. Silent changes in the intraventricular flow (IVF) dynamics occur before the deterioration of the cardiac wall, although they cannot be detected using conventional echocardiography. Collective information on left ventricular (LV) pressures throughout the cardiac cycle has great value when dealing with patients with altered hemodynamics. Accurate pressure measurement inside the ventricle can be obtained by invasive methods to determine the LV diastolic pressures, which reflect the myocardial relaxation and compliance. However, catheterization is only feasible in the laboratory setting and is not suitable for clinical use due to its disadvantages. In contrast, echocardiography is simple, safe, and accessible. Color M-mode echocardiography (CMME) is an advanced cardiac evaluation technique that can measure the intraventricular pressure differences (IVPDs) and intraventricular pressure gradients (IVPGs) based on the Doppler shift of the IVF. Recently, the assessment of IVPD and IVPG has gained growing interest in the cardiovascular literature in both animal and human studies as a non-invasive method for the early diagnosis of cardiac dysfunctions, especially diastolic ones. The usability of IVPD and IVPG has been reported in various surgically induced heart failure or pharmacologically altered cardiac functions in rats, dogs, cats, and goats. This report aims to give an overview of the current studies of CMME-derived IVPD and IVPG in animal studies and its feasibility for clinical application in veterinary practice and to provide the prospects of the technique’s ability to improve our understanding.
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- 2023
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5. Thermal Degradation of Bioactive Compounds during Drying Process of Horticultural and Agronomic Products: A Comprehensive Overview
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Ramadan ElGamal, Cheng Song, Ahmed M. Rayan, Chuanping Liu, Salim Al-Rejaie, and Gamal ElMasry
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bioactive compounds ,drying temperature ,thermal degradation ,agricultural products ,Agriculture - Abstract
Over the last few decades, many researchers have investigated in detail the characteristics of bioactive compounds such as polyphenols, vitamins, flavonoids, and glycosides, and volatile compounds in fruits, vegetables and medicinal and aromatic plants that possess beneficial properties, as well as consumer acceptance and preference. The main aim of this article is to provide an updated overview of recent research endeavors related to the effects of the drying process on the major bioactive/effective compounds in agricultural products. Particular emphasis was placed on details related to the changes occurring in vitamin C, polyphenols, flavonoids, glycosides and volatile compounds, as well as the antioxidant activity. An analysis of the degradation mechanisms of these compounds showed that vitamin C, phenols, flavonoids and glycosides react with oxygen during the convective drying process under high drying temperatures, and the reaction rate results in degradation in such bioactive compounds due to high reducibility. On the other hand, high temperature results in a short drying time, thus minimizing the degradation of bioactive compounds. The reviewed research works addressing this trend revealed that the ideal drying temperatures for retaining vitamin C, polyphenols, flavonoids, glycosides, volatile compounds and their antioxidant activity were 50–60 °C, 55–60 °C, 60–70 °C, 45–50 °C, 40–50 °C and 50–70 °C, respectively. In conclusion, to maintain plant bioactive components, convective drying at relatively low drying temperatures is strongly recommended.
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- 2023
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6. Isolation of Phosphate-Solubilizing Microorganisms and the Formulation of Biofertilizer for Sustainable Processing of Phosphate Rock
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Nipuni Mayadunna, Samantha C. Karunarathna, Suhail Asad, Steven L. Stephenson, Abdallah M. Elgorban, Salim Al-Rejaie, Jaturong Kumla, Neelamanie Yapa, and Nakarin Suwannarach
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biofertilizer ,Eppawala rock phosphate ,plant bioavailability ,phosphate solubilization ,Science - Abstract
As phosphorus (P) bioavailability is limited in arable lands, chemical fertilizers are being used by farmers to increase crop production. Phosphate-solubilizing microorganisms (PSMs) increase the bioavailability of sparingly soluble inorganic and organic soil phosphorus. Therefore, the current study was an effort to evaluate the phosphate-solubilizing efficiency of PSMs using tricalcium phosphate (TCP) and Eppawala rock phosphate (ERP). The efficiency of phosphate solubilization by a series of identified isolates was compared using TCP (5 g L−1) and ERP (5 g L−1) as a P source in Pikovskava’s broth. Twelve microbial isolates that showed a higher efficiency in phosphate solubilization were selected for the production of the biofertilizer. The isolate F10 in ERP broth was characterized by the highest significant level of available phosphorus (896.98 ± 10.41) mg L−1, followed by F5 (Aspergillus sp.) in TCP broth 991.43 ± 1.37 mg L−1. A pot trial was carried out by using Capsicum annuum L. as the test plant in two soil conditions: sterilized soil and non-sterilized soil with six treatments and four replicates. The significantly highest plant height, leaf length, and width were shown by chili plants treated with the formulated biofertilizer. Therefore, the application of native PSMs appeared to be an efficient method of solubilizing sparingly soluble P compounds into plant-available forms.
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- 2023
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7. Additions to Rhytidhysteron (Hysteriales, Dothideomycetes) in China
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Tian-Ye Du, Dong-Qin Dai, Ausana Mapook, Li Lu, Steven L. Stephenson, Nakarin Suwannarach, Abdallah M. Elgorban, Salim Al-Rejaie, Samantha C. Karunarathna, and Saowaluck Tibpromma
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Ascomycota ,four new species ,Hysteriaceae ,hysteriaceous ,saprobes ,seven new records ,Biology (General) ,QH301-705.5 - Abstract
In this study, twelve terrestrial hysteriaceous saprobic fungi growing on different pieces of dead wood were collected from Yunnan Province, China. All hysteriaceous strains isolated in this study tallied with the general characteristics associated with Rhytidhysteron. Detailed morphological characteristics and combined multigene phylogeny of LSU, ITS, SSU, and TEF showed that the twelve hysteriaceous fungi strains represent four distinct new species, and seven new host or geographical records of Rhytidhysteron. Based on morphological and phylogenetic evidence, the four new species (Rhytidhysteron bannaense sp. nov., R. coffeae sp. nov., R. mengziense sp. nov., and R. yunnanense sp. nov.) expand the number of species of Rhytidhysteron from thirty-three to thirty-seven, while seven new geographical records expand the records of Rhytidhysteron in China from six to thirteen. In addition, 10 new Rhytidhysteron host records are reported for the first time, thus expanding the known hosts for Rhytidhysteron from 52 to 62. Full descriptions, images of the morphology, and phylogenetic analyses to show the position of the Rhytidhysteron taxa are provided. In addition, the present study summarizes the main morphological characteristics, host associations, and locations of this genus.
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- 2023
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8. Endophytic Fungi Associated with Mango Show In Vitro Antagonism against Bacterial and Fungal Pathogens
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Er-Fu Yang, Samantha C. Karunarathna, Saowaluck Tibpromma, Steven L. Stephenson, Itthayakorn Promputtha, Abdallah M. Elgorban, Salim Al-Rejaie, and Putarak Chomnunti
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antagonistic activities ,Chaetomium ,fungal endophytes ,mango ,Yunnan Province ,Agriculture - Abstract
Endophytic fungi live in inter-cellular spaces of healthy plant tissues without causing any apparent symptoms of diseases for the host plant. Some fungal endophytes help their plant hosts to survive under biotic and abiotic stresses. In this study, we collected healthy mango leaves at the Honghe mango plantations (Yunnan Province) in the winter. A total of 34 different fungal endophytic strains were isolated, and their phylogenetic placements were estimated based on the ITS gene. Members of genus Chaetomium were the dominant fungal endophytes (26%). Common bacterial plant pathogens (Erwinia amylovora and Pseudomonas syringae) and fungal plant pathogens (Botrytis cinerea and Penicillium digitatum) were selected to test the antagonism of the fungal endophytes isolated from mango leaves through co-cultivation in vitro assay. Three strains of Chaetomium sp. viz. KUNCC22-0749, UNCC22-10750, and KUNCC22-10752 showed great inhibition against two bacterial pathogens viz. Erwinia amylovora and Pseudomonas syringae, and Alternaria sp. KUNCC22-10760, Chaetomium sp. KUNCC22-10749, Daldinia sp. KUNCC22-10744, and Rosellinia sp. KUNCC22-10751 also showed great to moderate antagonistic effects against two fungal pathogens viz. Botrytis cinerea and Penicillium digitatum.
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- 2023
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9. Taxonomy and Phylogeny of Fungi Associated with Mangifera indica from Yunnan, China
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Er-Fu Yang, Samantha C. Karunarathna, Dong-Qin Dai, Steven L. Stephenson, Abdallah M. Elgorban, Salim Al-Rejaie, Yin-Ru Xiong, Itthayakorn Promputtha, Milan C. Samarakoon, and Saowaluck Tibpromma
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mango ,plant-associated microfungi ,saprobic fungi ,Biology (General) ,QH301-705.5 - Abstract
During investigations of saprobic fungi associated with mango (Mangifera indica) in Baoshan and Honghe of Yunnan Province (China), fungal taxa belonging to the orders Botryosphaeriales, Calosphaeriales, Chaetothyriales, Diaporthales, and Xylariales were recorded. Morphological examinations coupled with phylogenetic analyses of multigene sequences (ITS, LSU, SSU, tef1-α, rpb1, rpb2, β-tubulin and CAL) were used to identify the fungal taxa. A new genus viz. Mangifericola, four new species viz. Cyphellophora hongheensis, Diaporthe hongheensis, Hypoxylon hongheensis, and Mangifericola hongheensis, four new host and geographical records viz. Aplosporella artocarpi, Hypomontagnella monticulosa, Paraeutypella citricola and Pleurostoma ootheca, and two new collections of Lasiodiplodia are reported.
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- 2022
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10. Endophytic Fungi Associated with Aquilaria sinensis (Agarwood) from China Show Antagonism against Bacterial and Fungal Pathogens
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Tian-Ye Du, Samantha C. Karunarathna, Xian Zhang, Dong-Qin Dai, Ausana Mapook, Nakarin Suwannarach, Jian-Chu Xu, Steven L. Stephenson, Abdallah M. Elgorban, Salim Al-Rejaie, and Saowaluck Tibpromma
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agarwood ,antibacterial activities ,antifungal activities ,antimicrobial activities ,Lasiodiplodia ,Biology (General) ,QH301-705.5 - Abstract
Agarwood is the most expensive non-construction wood product in the world. As a therapeutic agent, agarwood can cure some diseases, but few studies have been carried out on the antagonistic abilities of endophytic fungi associated with agarwood. Agarwood is mainly found in the genus Aquiaria. The objectives of this study are to understand the antimicrobial activities and their potential as biocontrol agents of the endophytic fungi of Aquilaria sinensis. First, fresh samples of A. sinensis were collected from Yunnan and Guangdong Provinces in 2020–2021, and the endophytic fungi were isolated and identified to genus level based on the phylogenetic analyses of the Internal Transcribed Spacer (ITS) region. In this bioassay, 47 endophytic strains were selected to check their bioactivities against three bacterial pathogens viz. Erwinia amylovora, Pseudomonas syringae, and Salmonella enterica; and three fungal pathogens viz. Alternaria alternata, Botrytis cinerea, and Penicillium digitatum. The antibiosis test was carried out by the dual culture assay (10 days), and among the 47 strains selected, 40 strains belong to 18 genera viz. Alternaria, Annulohypoxylon, Aspergillus, Botryosphaeria, Colletotrichum, Corynespora, Curvularia, Daldinia, Diaporthe, Fusarium, Lasiodiplodia, Neofusicoccum, Neopestalotiopsis, Nigrospora, Paracamarosporium, Pseudopithomyces, Trichoderma, Trichosporon and one strain belongs to Xylariaceae had antimicrobial activities. In particular, Lasiodiplodia sp. (YNA-D3) showed the inhibition of all the bacterial and fungal pathogens with a significant inhibition rate. In addition, the strains viz; Curvularia sp. (GDA-3A9), Diaporthe sp. (GDA-2A1), Lasiodiplodia sp. (YNA-D3), Neofusicoccum sp. (YNA-1C3), Nigrospora sp. (GDA-4C1), and Trichoderma sp. (YNA-1C1) showed significant antimicrobial activities and are considered worthy of further studies to identify individual fungal species and their bioactive compounds. This study enriches the diversity of endophytic fungi associated with agarwood, and their potential antagonistic effects against bacterial and fungal pathogens.
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- 2022
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11. Description of Four Novel Species in Pleosporales Associated with Coffee in Yunnan, China
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Li Lu, Samantha C. Karunarathna, Dong-Qin Dai, Yin-Ru Xiong, Nakarin Suwannarach, Steven L. Stephenson, Abdallah M. Elgorban, Salim Al-Rejaie, Ruvishika S. Jayawardena, and Saowaluck Tibpromma
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Coffea ,Deniquelata ,new species ,new records ,Paraconiothyrium ,phylogeny ,Biology (General) ,QH301-705.5 - Abstract
In Yunnan Province, the coffee-growing regions are mainly distributed in Pu’er and Xishuangbanna. During the surveys of microfungi associated with coffee in Yunnan Province, seven taxa were isolated from coffee samples. Based on molecular phylogenetic analyses of combined ITS, LSU, SSU, rpb2, and tef1-α sequence data and morphological characteristics, four new species viz. Deniquelata yunnanensis, Paraconiothyrium yunnanensis, Pseudocoleophoma puerensis, and Pse. yunnanensis, and three new records viz. Austropleospora keteleeriae, Montagnula thailandica, and Xenocamarosporium acaciae in Pleosporales are introduced. In addition, Paracamarosporium fungicola was transferred back to Paraconiothyrium based on taxonomy and DNA sequences. Full descriptions, illustrations, and phylogenetic trees to show the placement of new and known taxa are provided. In addition, the morphological comparisons of new taxa with closely related taxa are given.
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- 2022
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12. Endophytic Fungi Associated with Coffee Leaves in China Exhibited In Vitro Antagonism against Fungal and Bacterial Pathogens
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Li Lu, Samantha C. Karunarathna, Kevin D. Hyde, Nakarin Suwannarach, Abdallah M. Elgorban, Steven L. Stephenson, Salim Al-Rejaie, Ruvishika S. Jayawardena, and Saowaluck Tibpromma
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biocontrol agents ,Coffea ,coffee-endophytic fungi ,pathogenic fungi ,pathogenic bacteria ,Biology (General) ,QH301-705.5 - Abstract
Coffee endophytes have been studied for almost 74 years, and several studies have demonstrated coffee-endophytic fungi with antibacterial and antifungal potential for human and plant pathogens. In this study, we isolated and identified a total of 235 strains of endophytic fungi from coffee leaf tissues collected in four coffee plantations in Pu’er city, Yunnan province, China. Molecular identification was carried out using maximum likelihood phylogenetic analysis of nuclear ribosomal internal transcribed spacer (ITS1-5.8S rDNA-ITS2) sequences, while the colonization rate and the isolation frequency were also calculated. Two pathogenic fungi (Alternaria alternata and Penicillium digitatum) and two pathogenic bacteria (Pseudomonas syringae and Salmonella enterica subsp. enterica) were used for screening the antagonistic activities of 61 strains of coffee-endophytic fungi by a dual-culture test assay while maximum likelihood phylogenetic analysis confirmed their natural classification. This is the first study of coffee-leaf-endophytic fungal diversity in China, and the results revealed that coffee-endophytic fungi from this study belong to the Ascomycota, distributed among two classes, 10 orders, and 17 families. Concurrently, endophytic fungi isolates distributed in Arthrinium, Biscogniauxia, Daldinia, Diaporthe, and Nigrospora showed strong antagonistic activities against the pathogens. For the pathogens Alternaria alternata and Pseudomonas syringae, Nigrospora XCE-7 showed the best inhibitory effects with inhibition rates of 71.76% and 61.11%, respectively. For the pathogen Penicillium digitatum, Daldinia ME-9 showed the best inhibitory effect with a 74.67% inhibition rate, while Biscogniauxia PTE-7 and Daldinia T5E-1-3 showed the best inhibitory effect with a rate of 60.42% against the pathogen Salmonella enterica subsp. enterica. Overall, our study shows the diversity of coffee endophytes in four coffee-growing areas in Pu’er city, Yunnan province, China, and their potential use as biological control agents against two fungal and two bacterial pathogens.
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- 2022
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13. Using Culture-Dependent and Molecular Techniques to Identify Endophytic Fungi Associated with Tea Leaves (Camellia spp.) in Yunnan Province, China
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Saowaluck Tibpromma, Samantha C. Karunarathna, Jayarama D. Bhat, Nakarin Suwannarach, Steven L. Stephenson, Abdallah M. Elgorban, Salim Al-Rejaie, Jianchu Xu, and Peter E. Mortimer
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Ascomycota ,Clonostachys ,Colletotrichum ,healthy tissues ,ITS ,Biology (General) ,QH301-705.5 - Abstract
The association of endophytic fungi with the host plant is called a symbiotic relationship. Studies of the endophytic fungi from tea have been reported in numerous documents, but researchers still largely focus on tea endophytic fungi as they have ability to produce bioactive compounds which have numerous applications. The present work characterizes the fungal endophytic communities associated with healthy tea leaves in Yunnan Province, China. A total of 287 fungal strains were isolated from healthy leaf tissues of tea plants using a culture-dependent approach. Based on nuclear ribosomal DNA internal transcribed spacer (ITS) sequence analyses taken from the fungal cultures, strains were classified into 28 fungal genera with high similarity matches to known sequences in GenBank. The majority of genera (98.25%) belong to the phylum Ascomycota and most of the dominating fungal endophytes are from the genera Colletotrichum and Clonostachys.
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- 2022
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14. Monthly Dynamics of Plasma Elements, Hematology, Oxidative Stress Markers, and Hormonal Concentrations in Growing Male Shiba Goats (Capra hircus) Reared in Tokyo-Japan
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Ahmed S. Mandour, Haney Samir, Marwa A. El-Beltagy, Lina Hamabe, Hend A. Abdelmageed, Izumi Watanabe, Ahmed Elfadadny, Kazumi Shimada, Gamal El-Masry, Salim Al-Rejaie, Ryou Tanaka, and Gen Watanabe
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antioxidants ,plasma elements ,reproductive hormones ,Shiba goats ,hematobiochemical ,puberty ,Veterinary medicine ,SF600-1100 ,Zoology ,QL1-991 - Abstract
From a clinical point of view, the establishment of laboratory variables during the first few months of an animal’s life helps clinicians to make sure they base their medical decisions on laboratory values for the specific breed and age group. The present study aimed to investigate the monthly dynamics in some plasma elements, hematology, reproductive hormones, and oxidative stress marker profiles during the first five months of age (neonatal and peri-puberty stage) in male Shiba goat’s kids. Sixteen kids were investigated from the first to the fifth month (M1 to M5), and the data were presented as the statistical difference between them. Whole blood and plasma samples were collected monthly for analysis of basal hematology, plasma elements concentration (trace elements: Cu, Zn, Se, Fe, and Cr; macroelements: Ca and Mg), circulating hormones (cortisol, FSH, LH, IGF1, immunoreactive inhibin, testosterone, T3, and T4), and oxidative stress markers (MDA, CAT, SOD, and GPX). The results showed age-related changes in the observed parameters. The fifth month recorded the lowest level of almost all investigated minerals, except for Cr. Plasma hormone levels revealed age-dependent increases in IGF-1 and testosterone, age-related decreases in T3 and T4, and non-significant changes in cortisol and FSH. Besides, the concentrations of inhibin and LH were significantly higher at M1–M3 compared with M4–M5. Plasma SOD, GPX, and CAT were increased with age. In conclusion, age-related changes and a distinction of age in months was found necessary to interpret the laboratory results, specifically in terms of age in months and the peri-puberty stage in young goats, which are important to follow up the age-specific diseases, reproductive status, and treatment follow-ups in this stage.
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- 2022
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15. Diversity and Biosynthetic Activities of Agarwood Associated Fungi
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Tian-Ye Du, Cheng-Jiao Dao, Ausana Mapook, Steven L. Stephenson, Abdallah M. Elgorban, Salim Al-Rejaie, Nakarin Suwannarach, Samantha C. Karunarathna, and Saowaluck Tibpromma
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antimicrobial agents ,antioxidant agents ,antitumor compounts ,Aquilaria ,bio-technology ,Fusarium ,Biology (General) ,QH301-705.5 - Abstract
Agarwood is a fragrant dark resin produced in plants belonging to the family Thyme-laeaceae and which has a high economic value. The unique fragrance and medicinal applications intensify the value of agarwood. The wild populations of agarwood trees are highly threatened by high economic demand. Therefore, it is worthwhile to develop an artificial agarwood induction technology for the countries that rely on agarwood from the natural habitat of the plants. Fungal induction of agarwood has been shown to be an efficient method. Interestingly, most of the fungi known from agarwood are endophytic. In this paper, we supplement and update the bioactivity of fungi associated with agarwood and their ability to induce agarwood formation. According to the existing literature, 59 endophytic fungal strains of 16 genera induce agarwood production, most of which belong to Fusarium (28 identified strains). Hence, Fusarium is a good candidate for further studies on fungal induced agarwood production.
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- 2022
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16. N-((1H-Pyrrol-2-yl)methylene)-6-methoxypyridin-3-amine and Its Co(II) and Cu(II) Complexes as Antimicrobial Agents: Chemical Preparation, In Vitro Antimicrobial Evaluation, In Silico Analysis and Computational and Theoretical Chemistry Investigations
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Vinusha H. Mariwamy, Shiva Prasad Kollur, Bindya Shivananda, Muneera Begum, Chandan Shivamallu, Chandan Dharmashekara, Sushma Pradeep, Anisha S. Jain, Shashanka K. Prasad, Asad Syed, Abdallah M. Elgorban, Salim Al-Rejaie, Joaquín Ortega-Castro, Juan Frau, Norma Flores-Holguín, and Daniel Glossman-Mitnik
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Schiff base ,antimicrobial activity ,molecular docking ,spectroscopic techniques ,Conceptual DFT ,biological scores ,Organic chemistry ,QD241-441 - Abstract
Researchers are interested in Schiff bases and their metal complexes because they offer a wide range of applications. The chemistry of Schiff bases of heterocompounds has got a lot of attention because of the metal’s ability to coordinate with Schiff base ligands. In the current study, a new bidentate Schiff base ligand, N-((1H-pyrrol-2-yl)methylene)-6-methoxypyridin-3-amine (MPM) has been synthesized by condensing 6-methoxypyridine-3-amine with pyrrole-2-carbaldehyde. Further, MPM is used to prepare Cu(II) and Co(II) metal complexes. Analytical and spectroscopic techniques are used for the structural elucidation of the synthesized compounds. Both MPM and its metal complexes were screened against Escherichia coli, Bacillus subtilis, Staphylococcus aureus and Klebsiella pneumoniae species for antimicrobial studies. Furthermore, these compounds were subjected to in silico studies against bacterial proteins to comprehend their best non-bonded interactions. The results confirmed that the Schiff base ligand show considerably higher binding affinity with good hydrogen bonding and hydrophobic interactions against various tested microbial species. These results were complemented with a report of the Conceptual DFT global reactivity descriptors of the studied compounds together with their biological scores and their ADMET computed parameters.
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- 2022
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17. Using Deep Convolutional Neural Network for Image-Based Diagnosis of Nutrient Deficiencies in Plants Grown in Aquaponics
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Mohamed Farag Taha, Alwaseela Abdalla, Gamal ElMasry, Mostafa Gouda, Lei Zhou, Nan Zhao, Ning Liang, Ziang Niu, Amro Hassanein, Salim Al-Rejaie, Yong He, and Zhengjun Qiu
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deep convolutional neural networks (DCNNs) ,deep learning ,image processing ,aquaponics ,nutrient deficiency ,Biochemistry ,QD415-436 - Abstract
In the aquaponic system, plant nutrients bioavailable from fish excreta are not sufficient for optimal plant growth. Accurate and timely monitoring of the plant’s nutrient status grown in aquaponics is a challenge in order to maintain the balance and sustainability of the system. This study aimed to integrate color imaging and deep convolutional neural networks (DCNNs) to diagnose the nutrient status of lettuce grown in aquaponics. Our approach consists of multi-stage procedures, including plant object detection and classification of nutrient deficiency. The robustness and diagnostic capability of proposed approaches were evaluated using a total number of 3000 lettuce images that were classified into four nutritional classes—namely, full nutrition (FN), nitrogen deficiency (N), phosphorous deficiency (P), and potassium deficiency (K). The performance of the DCNNs was compared with traditional machine learning (ML) algorithms (i.e., Simple thresholding, K-means, support vector machine; SVM, k-nearest neighbor; KNN, and decision Tree; DT). The results demonstrated that the deep proposed segmentation model obtained an accuracy of 99.1%. Also, the deep proposed classification model achieved the highest accuracy of 96.5%. These results indicate that deep learning models, combined with color imaging, provide a promising approach to timely monitor nutrient status of the plants grown in aquaponics, which allows for taking preventive measures and mitigating economic and production losses. These approaches can be integrated into embedded devices to control nutrient cycles in aquaponics.
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- 2022
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18. Assessment of the Cardiac Functions Using Full Conventional Echocardiography with Tissue Doppler Imaging before and after Xylazine Sedation in Male Shiba Goats
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Ahmed S. Mandour, Haney Samir, Tomohiko Yoshida, Katsuhiro Matsuura, Hend A. Abdelmageed, Mohamed Elbadawy, Salim Al-Rejaie, Hussein M. El-Husseiny, Ahmed Elfadadny, Danfu Ma, Ken Takahashi, Gen Watanabe, and Ryou Tanaka
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Doppler echocardiography ,goats ,heart ,tissue Doppler imaging ,xylazine ,Veterinary medicine ,SF600-1100 ,Zoology ,QL1-991 - Abstract
The present study aimed to provide a complete conventional echocardiographic protocol in adult male Shiba goats by using two-dimensional, M-mode, Pulsed Wave Doppler, and tissue Doppler imaging (TDI) echocardiography, and to study concomitantly xylazine-induced alteration of cardiac functions in a highly sensitive species. For this purpose, 12 male Shiba goats were included and complete conventional echocardiography from the standard right and left parasternal views was carried to report the echocardiographic data in male Shiba goats, and also before and after xylazine (Pre-Xyl and Post-Xyl) administration (0.05 mg/IM/kg). Results revealed that the full echocardiographic protocol was feasible in all goats through different cardiac windows and good Doppler alignment was achieved with non-significant variability for assessment of the left ventricular dimensions, trans-pulmonary, trans-aortic, and trans-mitral blood flow. The TDI, which was not reported previously in goats, was successfully assessed from the standard left apical view and showed distinct systolic and diastolic patterns. Xylazine administration was found to significantly reduce heart rate, fractional shortening, and cardiac output as well as the Doppler hemodynamic parameters of the pulmonary artery, aortic and mitral inflows (p < 0.05). For TDI, the Post-Xyl group revealed a significant decrease in the myocardial velocities of the septal and lateral wall of the left ventricle. The present study provides, for the first time, complete data of conventional echocardiography in male goats using the full protocol, which is routinely used in pet’s practice. Further, we illustrate in-depth the adverse effect of short-term sedative, xylazine, as used under field conditions and emphasize a simultaneous reduction in both systolic and diastolic cardiac function in goats based on full echocardiography assessment of the heart.
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- 2020
- Full Text
- View/download PDF
19. Molecular Insights into Human Transmembrane Protease Serine-2 (TMPS2) Inhibitors against SARS-CoV2: Homology Modelling, Molecular Dynamics, and Docking Studies
- Author
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Safaa M. Kishk, Rania M. Kishk, Asmaa S. A. Yassen, Mohamed S. Nafie, Nader A. Nemr, Gamal ElMasry, Salim Al-Rejaie, and Claire Simons
- Subjects
TMPS2 ,SARS-CoV2 ,homology model ,molecular dynamics ,Organic chemistry ,QD241-441 - Abstract
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV2), which caused novel corona virus disease-2019 (COVID-19) pandemic, necessitated a global demand for studies related to genes and enzymes of SARS-CoV2. SARS-CoV2 infection depends on the host cell Angiotensin-Converting Enzyme-2 (ACE2) and Transmembrane Serine Protease-2 (TMPRSS2), where the virus uses ACE2 for entry and TMPRSS2 for S protein priming. The TMPRSS2 gene encodes a Transmembrane Protease Serine-2 protein (TMPS2) that belongs to the serine protease family. There is no crystal structure available for TMPS2, therefore, a homology model was required to establish a putative 3D structure for the enzyme. A homology model was constructed using SWISS-MODEL and evaluations were performed through Ramachandran plots, Verify 3D and Protein Statistical Analysis (ProSA). Molecular dynamics simulations were employed to investigate the stability of the constructed model. Docking of TMPS2 inhibitors, camostat, nafamostat, gabexate, and sivelestat, using Molecular Operating Environment (MOE) software, into the constructed model was performed and the protein-ligand complexes were subjected to MD simulations and computational binding affinity calculations. These in silico studies determined the tertiary structure of TMPS2 amino acid sequence and predicted how ligands bind to the model, which is important for drug development for the prevention and treatment of COVID-19.
- Published
- 2020
- Full Text
- View/download PDF
20. Apoferritin and Apoferritin-Capped Metal Nanoparticles Inhibit Arginine Kinase of Trypanosoma brucei
- Author
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Oluyomi Stephen Adeyemi, Afolake T. Arowolo, Helal F. Hetta, Salim Al-Rejaie, Damilare Rotimi, and Gaber El-Saber Batiha
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drug discovery ,medicinal biochemistry ,nanomedicine ,selective inhibitors ,trypanosomiasis ,Organic chemistry ,QD241-441 - Abstract
The aim of this study was to explore the inhibitory potential of apoferritin or apoferritin-capped metal nanoparticles (silver, gold and platinum) against Trypanosomabrucei arginine kinase. The arginine kinase activity was determined in the presence and absence of apoferritin or apoferritin-capped metal nanoparticles. In addition, kinetic parameters and relative inhibition of enzyme activity were estimated. Apoferritin or apoferritin-capped metal nanoparticles’ interaction with arginine kinase of T. brucei led to a >70% reduction in the enzyme activity. Further analysis to determine kinetic parameters suggests a mixed inhibition by apoferritin or apoferritin-nanoparticles, with a decrease in Vmax. Furthermore, the Km of the enzyme increased for both ATP and L-arginine substrates. Meantime, the inhibition constant (Ki) values for the apoferritin and apoferritin-nanoparticle interaction were in the submicromolar concentration ranging between 0.062 to 0.168 nM and 0.001 to 0.057 nM, respectively, for both substrates (i.e., L-arginine and ATP). Further kinetic analyses are warranted to aid the development of these nanoparticles as selective therapeutics. Also, more studies are required to elucidate the binding properties of these nanoparticles to arginine kinase of T. brucei.
- Published
- 2020
- Full Text
- View/download PDF
21. Bioactive Compounds, Pharmacological Actions, and Pharmacokinetics of Wormwood (Artemisia absinthium)
- Author
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Gaber El-Saber Batiha, Ahmed Olatunde, Amany El-Mleeh, Helal F. Hetta, Salim Al-Rejaie, Saad Alghamdi, Muhammad Zahoor, Amany Magdy Beshbishy, Toshihiro Murata, Adrian Zaragoza-Bastida, and Nallely Rivero-Perez
- Subjects
traditional uses ,medicinal herb ,biological activities ,Artemisia absinthium ,phytochemical compounds ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Plants have been used since ancient times to cure certain infectious diseases, and some of them are now standard treatments for several diseases. Due to the side effects and resistance of pathogenic microorganisms to antibiotics and most drugs on the market, a great deal of attention has been paid to extracts and biologically active compounds isolated from plant species used in herbal medicine. Artemisia absinthium is an important perennial shrubby plant that has been widely used for the treatment of several ailments. Traditionally, A. absinthium has always been of pharmaceutical and botanical importance and used to manage several disorders including hepatocyte enlargement, hepatitis, gastritis, jaundice, wound healing, splenomegaly, dyspepsia, indigestion, flatulence, gastric pain, anemia, and anorexia. It has also been documented to possess antioxidant, antifungal, antimicrobial, anthelmintic, anti-ulcer, anticarcinogenic, hepatoprotective, neuroprotective, antidepressant, analgesic, immunomodulatory, and cytotoxic activity. Long-term use of A. absinthium essential oil may cause toxic and mental disorders in humans with clinical manifestations including convulsions, sleeplessness, and hallucinations. Combination chemotherapies of artemisia extract or its isolated active constituents with the currently available antibabesial or anti-malarial drugs are now documented to relieve malaria and piroplasmosis infections. The current review examines the phytoconstituents, toxic and biological activities of A. absinthium.
- Published
- 2020
- Full Text
- View/download PDF
22. Recent Applications of Multispectral Imaging in Seed Phenotyping and Quality Monitoring—An Overview
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Gamal ElMasry, Nasser Mandour, Salim Al-Rejaie, Etienne Belin, and David Rousseau
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seed ,grain ,multispectral imaging ,hyperspectral imaging ,quality evaluation ,germination ,viability ,Chemical technology ,TP1-1185 - Abstract
As a synergistic integration between spectroscopy and imaging technologies, spectral imaging modalities have been emerged to tackle quality evaluation dilemmas by proposing different designs with effective and practical applications in food and agriculture. With the advantage of acquiring spatio-spectral data across a wide range of the electromagnetic spectrum, the state-of-the-art multispectral imaging in tandem with different multivariate chemometric analysis scenarios has been successfully implemented not only for food quality and safety control purposes, but also in dealing with critical research challenges in seed science and technology. This paper will shed some light on the fundamental configuration of the systems and give a birds-eye view of all recent approaches in the acquisition, processing and reproduction of multispectral images for various applications in seed quality assessment and seed phenotyping issues. This review article continues from where earlier review papers stopped but it only focused on fully-operated multispectral imaging systems for quality assessment of different sorts of seeds. Thence, the review comprehensively highlights research attempts devoted to real implementations of only fully-operated multispectral imaging systems and does not consider those ones that just utilized some key wavelengths extracted from hyperspectral data analyses without building independent multispectral imaging systems. This makes this article the first attempt in briefing all published papers in multispectral imaging applications in seed phenotyping and quality monitoring by providing some examples and research results in characterizing physicochemical quality traits, predicting physiological parameters, detection of defect, pest infestation and seed health.
- Published
- 2019
- Full Text
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23. Sacubitril/Valsartan Alleviates Type 2 Diabetes-Induced NAFLD Through Modulation of Oxidative Stress, Inflammation and Apoptosis
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Salim Al-Rejaie, Mohammed M. Ahmed, and Mohamed Mohany
- Published
- 2023
24. Assessment of Community Dynamics of Arbuscular Mycorrhizal Fungi in the Rice (Oryza sativa L.) Rhizosphere and Potential Application as Biofertilizer
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Ruwanthika Kalamulla, Dhanushka Sandaruwan, Samantha C. Karunarathna, Steven L. Stephenson, Saowaluck Tibpromma, Abdallah M. Elgorban, Salim Al-Rejaie, Pinnaduwage Neelamanie Yapa, and Nakarin Suwannarach
- Subjects
Renewable Energy, Sustainability and the Environment ,AMF ,biofertilizer ,root colonization ,submerged rice ,yield ,Geography, Planning and Development ,Building and Construction ,Management, Monitoring, Policy and Law - Abstract
Arbuscular mycorrhizal fungi (AMF) have the potential to maintain the sustainability of rice cultivation via maintaining soil health. The objective of this study was to produce an AMF-based biofertilizer for the rice variety Bg350 using indigenous dominant species of AMF that are adapted to paddy wetland soil conditions in dry, wet, and intermediate zones in Sri Lanka and are co-inoculated with the bacterium Azospirillum. A pot experiment was carried out to evaluate the effectiveness of the produced biofertilizer using the rice variety Bg350. Treatments were inorganic fertilizer, compost, biochar, produced AMF-biofertilizer [1 kg of ground carrier material inoculated with 50 g of AMF propagules and 20 mL of 1.5 × 108 (CFU/mL) of Azospirillum], and the control. A two-factor factorial, completely randomized design was used under sterilized and non-sterilized soil conditions with four replicates. The genera Glomus, Claroideoglomus, and Aculospora were identified as the most common AMFs in paddy soil in all investigated sites. In the 9th week of sampling, AMF root colonization was positively correlated (p = 0.028) with spore density. In Sri Lanka, for the first time, the highest AMF colonization rates in rice were recorded at 36.40% in the roots of the Bg350 from the Gampaha district. AMF root colonization increased over sampling time and was different according to the interactive effect of fertilizer application and soil condition. The biometric parameters and yield-attributing characteristics were significantly higher in the rice plants grown in sterilized soil, independent of the tested treatments. The number of grains per panicle was significantly similar (p ≤ 0.05) in the compost, AMF-biofertilizer, and inorganic fertilizer added treatments. It can be concluded that application of paddy soil adapted AMF species as a biofertilizer increased rice plant growth, productivity, and yield.
- Published
- 2022
- Full Text
- View/download PDF
25. The potential role of LCZ696 in ameliorating diabetic cardiomyopathy by inhibiting the myocardial inflammation, ER stress, and apoptosis through the RAGE/NF‐κB and PERK/CHOP signaling Pathways
- Author
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Salim Al Rejaie and Osamah Belali
- Subjects
Genetics ,Molecular Biology ,Biochemistry ,Biotechnology - Published
- 2022
26. Loranthus regularis Ameliorates Neurodegenerative Factors in the Diabetic Rat Retina
- Author
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Mohammad Ola, Ahmed Alanazi, Ajamaluddin Malik, Abdul Malik, Mohammed Ahmed, Salim Al-Rejaie, and Abdullah Alhomida
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Fluid Flow and Transfer Processes ,diabetes ,retina ,neuroprotection ,Loranthus regularis ,oxidative stress ,apoptosis ,Process Chemistry and Technology ,General Engineering ,General Materials Science ,Instrumentation ,Computer Science Applications - Abstract
Diabetic retinopathy remains a primary source of blindness with the growing pandemic of diabetes. Numerous studies have shown that early neurodegeneration caused by elevated oxidative stress may initiate microvascular damage in the diabetic retina during the last few decades. A variety of preventive and treatment strategies using phytochemicals that possess high antioxidants have shown great promise in reducing diabetes-induced neurodegeneration retinal damage. In this investigation, we employed an extract of Loranthus regularis, a traditional medicinal herb which is found to improve diabetes and associated complications in experimental studies. We orally treated STZ-induced diabetic rats with L. regularis and analyzed the neurodegenerative factors in the retina. After treatments, we used Western blotting techniques to analyze the protein content of neurotrophic factors (NGF, BDNF, TrkB), apoptotic factors (cytochrome c, Bcl-2, Bax), and phosphorylation of AKT in the diabetic retina. Additionally, we used ELISA methods to measure the contents of BDNF and the activity of Caspase-3 and biochemical procedures to determine the levels of glutathione and lipid peroxidation (TBARS). Our findings show that L. regularis treatments resulted in a considerable increase in neurotrophic factors and a decrease in apoptotic factors in the diabetic retina. Furthermore, in diabetic retina treated with L. regularis, the level of Bcl-2 protein increased, while the phosphor-AKT signaling improved. As a result, L. regularis may protect against diabetic-induced retinal neuronal damage by increasing neurotrophic support and reducing oxidative stress and apoptosis. Therefore, this study suggests that in diabetic retinopathy, L. regularis could be a potential therapy option for preventing neuronal cell death.
- Published
- 2022
27. The utility of electrocardiography and echocardiography in copper deficiency-induced cardiac damage in goats
- Author
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Ahmed S, Mandour, Roushdy F, Elsayed, Asmaa O, Ali, Ahmed E, Mahmoud, Haney, Samir, Amina A, Dessouki, Katsuhiro, Matsuura, Izumi, Watanabe, Kazuaki, Sasaki, Salim, Al-Rejaie, Tomohiko, Yoshida, Kazumi, Shimada, Ryou, Tanaka, and Gen, Watanabe
- Subjects
Electrocardiography ,Echocardiography ,Goats ,Animals ,Heart ,Copper - Abstract
Copper deficiency (CuD) is a common mineral disorder in ruminants, which causes histomorphological changes in the heart due to disturbances in copper-dependent metalloenzymes. However, alterations in the measurable cardiac parameters during CuD have not been studied in ruminants, especially in goats. Therefore, the current study aimed to investigate longitudinally the potential role of electrocardiography (ECG) and echocardiography to detect the CuD-induced cardiac damage at different time intervals and concomitantly highlighting the impact of CuD on specific hemato-biochemical parameters and histological cardiac disruption in goats. Eight Shiba goats were included and divided into two equal groups; copper adequate (CuA) as a control and copper-deficient (CuD) that supplemented with copper-chelating agents (sulfur 3 g/kg DM and molybdenum 40 mg/kg DM). The hemato-biochemical analysis, ECG assessment at the base apex lead, and right-side echocardiography were performed just before the experimental onset (T0), and later on at two-time intervals after existing of CuD, at the fifth (T5) and seventh (T7) months. Necropsy and histopathological examination of the heart were performed at the end of the experiment. In the CuD group, the heart dimensions at T5 and T7 showed significant increase in QRS duration, ST-segment duration, the left atrial area in systole, left ventricular diameter and volume in diastole, stroke volume, and cardiac output compared with CuA (P0.05). Also, myocardial degeneration, necrosis, and fibrosis were evidenced with a concurrent increase of plasma creatine kinase, lactate dehydrogenase, aspartate aminotransferase, and cardiac troponin I (P0.05). In conclusion, CuD disturbs hemato-biochemical parameters and results in myocardial damage and cardiac dilatation that increases some ECG and echocardiographic parameters without development of systolic dysfunction. The ECG and echocardiography can potentially detect cardiac changes in long-lasting CuD in goats.
- Published
- 2020
28. Renin Angiotensin System Blockage by Losartan Neutralize Hypercholesterolemia-Induced Inflammatory and Oxidative Injuries
- Author
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Abdulaziz AlSaad, Fawaz Alasmari, Hatem Abuohashish, Mohamed Mohany, Mohammed Ahmed, and Salim Al-Rejaie
- Abstract
Background: Hypercholesterolemia induces several metabolic diseases via oxidative and pro-inflammatory pathways. Renin angiotensin system (RAS) contributes to the pathogenesis of hypercholesterolemia-associated metabolic changes. Therefore, this study aims to explore the protective role of losartan (LT) against oxidative and inflammatory damages in different physiological systems including heart, liver and kidney tissues in hypercholesterolemic rats. Methods: After induction of hypercholesterolemia by high cholesterol diet for 6 weeks, LT was administered for 4 weeks. In serum samples, the levels of lipoproteins, aminotransferases, creatine kinases, urea, apoptosis and inflammatory markers were measured. In cardiac, hepatic and renal tissues, lipid peroxidation product and glutathione as well as antioxidant enzymatic activities were assayed. Finally, histopathological assessment evaluated the structural damage in in cardiac, hepatic and renal tissues. Results: Serum markers of cardiac, hepatic and renal toxicities including creatine kinases, aminotransferases and urea were attenuated by LT in hypercholesterolemic animals. Moreover, LT markedly corrected the elevated levels of lipoproteins, apoptosis and inflammatory biomarkers. Hypercholesterolemia-induced lipid peroxidation, low glutathione levels and diminished activities of antioxidant enzymes were prominently improved in LT treated animals. Histopathological alterations by hypercholesterolemia in heart, liver and kidney tissues were ameliorated by LT. Conclusion: This study confirmed the pathological enrolment of renin-angiotensin system in hypercholesterolemia-associated metabolic alterations. LT had a significant cardiac, hepatic and renal protective role against these impairments through down-regulation of oxidative damage, inflammation and necrosis.
- Published
- 2020
29. Oleo-gum-resin suppresses indomethacin-induced elevation of proinflammatory biomarker and gastric injury in rats
- Author
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Shakir AlSharari and Salim Al-Rejaie
- Subjects
Immunology ,Immunology and Allergy - Abstract
AIM To investigate the mucosal protective effect and the mechanisms of action of the anti-ulcer drug oleo-gum-resin in gastric injury induced by indomethacin in rats. METHODS Gastric mucosal injury was induced in male Wistar rats by oral administration of indomethacin at a dose of 60 mg/kg. One hour before indomethacin treatment, animals were orally pretreated with oleo-gum-resin at doses of 125 mg/kg, 250 mg/kg or 500 mg/kg. Four hours after indomethacin administration, the animals were sacrificed and their stomachs were rapidly removed and processed for the evaluation of gastric mucosal damage and the determination of the concentrations of TNF-α, IL-1β, IL-6, NO, PGE2 and myeloperoxidase (MPO) in mucosal tissues. RESULTS Linear hemorrhagic mucosal lesions were observed primarily in the glandular stomach 4 h after oral administration of indomethacin. Pretreatment with oleo-gum-resin markedly reduced the number and severity of gastric lesions in a dose dependent manner. The mucosal concentrations of TNF-α, IL-1β, IL-8, NO, and MPO, which indicates the degree of mucosal infiltration by neutrophils, increased concomitantly with the occurrence of gastric injury in the indomethacin administered rats while PGE2 levels inhibited in this group. Pretreatment with oleo-gum-resin significantly decreased the levels of these inflammatory factors in gastric tissue elicited by indomethacin and enhanced the PGE2 levels. CONCLUSION The mucosal protective effects afforded by oleo-gum-resin on gastric injury induced by indomethacin are mediated by inhibition of mucosal proinflammatory cytokine production and neutrophil infiltration, leading to suppression of mucosal inflammation and subsequent tissue destruction.
- Published
- 2016
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