Publications by authors named "Ahmed M el-Shehawi"

Article Synopsis
  • The study investigates gene expression changes in response to different oxygen levels, comparing high altitudes to sea level.
  • Key genes involved, including VHLEL, VEGF, and HIF-1α, were found to be more active at high altitudes, suggesting a biological adaptation to low oxygen conditions.
  • The research contributes to understanding altitude sickness treatment and highlights the need for larger participant studies to enhance knowledge about physiological adaptations to low oxygen environments.
View Article and Find Full Text PDF

Laccase-like multi-copper oxidases (LMCOs) are a group of enzymes involved in the oxidation of numerous substrates. Recently, these enzymes have become extremely popular due to their practical applications in various fields of biology. LMCOs generally oxidize various substrates by linking four-electron reduction of the final acceptor, molecular oxygen (O), to water.

View Article and Find Full Text PDF

Morbidity and mortality from diabetes mellitus and associated illnesses is a major problem across the globe. Anti-diabetic medicines must be improved despite existing breakthroughs in treatment approaches. Diabetes has been linked to mitochondrial dysfunction.

View Article and Find Full Text PDF

This study aims to determine the impact of dietary energy levels on rumen microbial composition and its relationship to the quality of Black Tibetan sheep meat by applying metabolomics and Pearson's correlation analyses. For this purpose, UHPLC-QTOF-MS was used to identify the metabolome, whereas 16S rDNA sequencing was used to detect the rumen microbiota. Eventually, we observed that the high energy diet group (HS) improved the carcass quality of Black Tibetan sheep and fat deposition in the (LL) compared to the medium energy diet group (MS).

View Article and Find Full Text PDF

Human Group IIA secreted phospholipase A (sPLA-IIA) enzyme plays a crucial role in several chronic inflammatory diseases such asasthma, atherosclerosis, gout, bronchitis, etc. Several studies showed that the antioxidants exert an anti-inflammatory function by inhibiting the sPLA-IIA enzyme. Hence, the present study evaluated an antioxidant molecule, sinapic acid, for sPLA-IIA inhibition as an anti-inflammatory function.

View Article and Find Full Text PDF
Article Synopsis
  • The study aimed to investigate the phytochemical and pharmacological properties of Wrightia coccinea through various laboratory models, identifying four key compounds from its bark and seeds.
  • The extracts from the bark and fruits showed strong antioxidant activity, significantly outperforming standard ascorbic acid, and exhibited notable anti-diarrheal and hypoglycemic effects in mice.
  • Computational studies revealed that the isolated compounds have a high binding affinity for proteins related to oxidative stress and pain management, suggesting W. coccinea could be a valuable natural remedy for these health issues.
View Article and Find Full Text PDF

This study examined the protective effect of earthworm extract (EE) on acrylamide (ACR)-induced reproductive dysfunction. Forty male rats were allocated into four groups = 10). The G I (control) group received distilled water (D.

View Article and Find Full Text PDF

The α-D-glucopyranoside and its derivatives were as the cardinal investigation for developing an effective medication to treat the highest deadly white spot syndrome virus (WSSV) diseases in Shrimp. In our forthcoming work, both computational tools, such as molecular docking, quantum calculations, pharmaceutical kinetics, ADMET, and their molecular dynamics, as well as the experimental trial against WSSV, were executed to develop novel inhibitors. In the beginning, molecular docking was carried out to determine inhibitors of the four targeted proteins of WSSV (PDB ID: 2ED6, 2GJ2, 2GJI, and 2EDM), and to determine the binding energies and interactions of ligands and proteins after docking.

View Article and Find Full Text PDF
Article Synopsis
  • High elevations cause harmful changes in the human body, affecting organ health and overall well-being.
  • A study on rats compared those living at normal sea level to those at 2,600 meters, measuring liver and kidney biomarkers and oxidative stress over two months.
  • Results showed significant liver and kidney damage indicators in high-altitude rats, along with increased oxidative stress and inflammatory markers, highlighting the risks of living in such environments.
View Article and Find Full Text PDF

The present study was conducted to elucidate the prevalence of in suckling and weaned cattle calves () from different governorates in northern, middle, and southern Egypt, such as Behera, Menofia, Qaliubiya, Assiut, and Sohag; result revealed that from the overall examined fecal samples ( = 825), the overall prevalence was 7.27%, the highest significant infection rate was in young suckling calves less than one month (8.2%), and seasonally, winter season has the highest significant level (11.

View Article and Find Full Text PDF

Drought stress destructively affects the growth and productivity of sorghum crop, especially under saline soils. Therefore, Field trials were performed to determine the influence of water stress on water productivity (water productivity for grain, (G-WP) and water productivity for forage, (F-WP), yield of sorghum and soil properties in salt-affected soil (8.20 dS m) under different sowing dates and irrigation regimes.

View Article and Find Full Text PDF

Rice ( L.) is a critical staple food crop that provides more than half of the world's population with its primary nutritional source. Breeders and growers of rice would profit from robust genotypes with improved morphological and yield-related characteristics.

View Article and Find Full Text PDF

This study was carried out in Desert Research Center and Faculty of Agriculture, Zagazig University, Egypt, under North Sinai conditions during three growing seasons, , summer 2018, fall 2018/2019 and summer 2019 to assess the effect of radiation mutants on leaf histological features and genetic stability of the productivity of some potato cultivars under drought stress conditions. Results reveal that the genotypes can be statistically classified based on regression coefficient (bi), deviation from regression (Sdi) to 4 groups (with low in Sdi are considered in all groups) as: (i) Genotype with elevated average, bi = 1, it is considered as stable genotype where Cara cultivar (both generations) was included. (ii) Genotype with elevated average, bi > 1 as genotype with average stability where spunta cultivar was involved.

View Article and Find Full Text PDF

Resistant plant cultivars which used in breeding programs are considered one of the modern integrated management programs to reduce the usage of synthetic insecticides and environmental contamination the present study aimed to characterize the resistant and susceptible tomato cultivars to based on biochemical and molecular levels, in Egypt. The biochemical characters of the tested tomato cultivars (tomato- 86, tomato- Alissa, tomato- Fayarouz, tomato- Omniya, tomato- 036, tomato- GS) were determined colorimetrically and characterized by using native- polyacrylamide gel electrophoresis (PAGE) and agarose gel. Our results showed that there were variations highly significant in all biochemical constituents of the resistant tomato cultivar (tomato- 86) compared with the susceptible one (tomato- GS).

View Article and Find Full Text PDF

Black pepper ( L.) is one of the oldest spices in the world, additionally, it is highly demanded. Several biotic and abiotic variables pose black pepper production worldwide.

View Article and Find Full Text PDF

The current experiment was adopted during the summer 2018, fall 2018/2019 and summer 2019 respectively at the Experimental Farm of Baloza station, Desert Research Center. North Sinai Governorate, Egypt to study the effect of different doses of irradiation (0, 20, 30 and 40 Gy), three irrigation levels (100, 80 and 60% field capacity on growth, yield and its quality of some potato cultivars (Spunta, Cara, Caruso and Hermes). Treated Spunta cultivar pre planting with 20 (Gy) and irrigated with 80% field capacity was the best treatment for increasing number of aerial stem/plants, leaf area, total chlorophyll in leaves, average tuber weight, and total yield/fed.

View Article and Find Full Text PDF

Cercospora leaf spot caused by are among the most dangerous plant diseases on sugar beet plants. It causes heavy economic losses, whether on the yield of roots, the percentage of sugar in them, or the quality of sugar produced. In addition to the economic cost caused by chemical control, these chemical pesticides cause an imbalance in the ecosystem and harm the health of humans and animals.

View Article and Find Full Text PDF

Acrylamide (ACR) has various effects on biological systems, including oxidative stress and its associated metabolic disorders. Previous research reports that plants growing at high altitude have a different profile of antioxidants. In the current report, the Taify pomegranate juice (TPJ) of the Taify pomegranate growing at the Taif region (high altitude), Saudi Arabia, was investigated for its protective activity from ACR-induced oxidative stress.

View Article and Find Full Text PDF

Members of MTP (metal tolerance protein) family are potential metal ion transporters, but little is known about how their responses and expression are altered in response to the deficiency and excess of Fe in soybean. In this study, root and shoot length and biomass in addition to leaf chlorophyll score, PSII efficiency and photosynthetic performance index were adversely affected by Fe-deficiency and excess Fe. Fe and S concentrations in the root and shoot, as well as the increased root FCR activity, consistently decreased and increased, respectively, accompanied by elevated Zn levels under Fe deficiency and Fe toxicity.

View Article and Find Full Text PDF

Water stress is a critical abiotic stress for plant reduction in arid and semiarid zones and, has been discovered to be detrimental to the development of seedlings as well as the growth and physiological characteristics of many crops such as cotton. The objectives of our study were to determine the combining ability and genetic components for five quantitative traits [(leaf area (LA), leaf dry weight (LDW), plant height (PH), fiber length (2.5 percent SL), and lint cotton yield/plant (LCY/P)] under water shortage stress, a half diallel cross between six cotton genotypes representing a wide range of cotton characteristics was evaluated in RCBD with four replications.

View Article and Find Full Text PDF

This study aimed to investigate the prevalence and intensity of external parasites in domestic pigeons in Giza, Egypt, from January 2020 to December 2020. A total of 300 domestic pigeons (25 pigeons per month) were examined. The birds were divided into groups based on their age.

View Article and Find Full Text PDF

The complete hydrolysis of xylan can be facilitated by the coordinated action of xylanase and other de-branching enzymes. Here, a GH43 α-l-arabinofuranosidase/β-xylosidase (CAX43) from was cloned, sequenced, and biochemically investigated. The interaction of the enzyme with various substrates was also studied.

View Article and Find Full Text PDF

The Acrylamide is a toxic compound generated under oxidative stress arising from intracellular ROS production and induced toxicity. It is frequently used in industry and generated through the heating of tobacco and foods high in carbohydrates. The exact mechanism of its toxicity is still unclear.

View Article and Find Full Text PDF

This work aimed to characterize isolates from the eyes of healthy and clinically affected equines in the Kafrelsheikh Governorate, Egypt. A total of 110 animals were examined for the presence of , which was isolated from 33 animals with ophthalmic lesions and 77 healthy animals. We also investigated the antimicrobial resistance profile, oxacillin resistance mechanism, and the major virulence factors implicated in many studies of the ocular pathology of pathogenic .

View Article and Find Full Text PDF