Publications by authors named "S A Sherif"
The present study investigates the neuroprotective effects of the sea urchin Paracentrotus lividus gonadal extract on rotenone-induced neurotoxicity in a Parkinson's disease (PD) rat model. Parkinson's disease, characterized by the progressive loss of dopaminergic neurons in the substantia nigra (SN), is exacerbated by oxidative stress and neuroinflammation. The study involved fifty Wistar rats divided into five groups: control, dimethyl sulfoxide (DMSO) control, Paracentrotus lividus gonadal extract-treated, rotenone-treated, and combined rotenone with Paracentrotus lividus gonadal extract-treated.
View Article and Find Full Text PDFEthylene is an important phytohormone that orchestrates a multitude of physiological and biochemical processes regulating fruit ripening, from early maturation to post-harvest. This review offers a comprehensive analysis of ethylene's multifaceted roles in climacteric fruit ripening, characterized by a pronounced increase in ethylene production and respiration rates. It explores potential genetic and molecular mechanisms underlying ethylene's action, focusing on key transcription factors, biosynthetic pathway genes, and signal transduction elements crucial for the expression of ripening-related genes.
View Article and Find Full Text PDFLight exerts multiple non-image-forming biological effects on physiology including the stimulation of alertness and cognition. However, the subcortical circuitry underlying the stimulating impact of light is not established in humans. We used 7 Tesla functional magnetic resonance imaging to assess the impact of variations in light illuminance on the regional activity of the hypothalamus while healthy young adults (N=26; 16 women; 24.
View Article and Find Full Text PDFArticle Synopsis
- - The study focuses on improving the diagnosis of myocarditis using cardiac magnetic resonance imaging (CMRI) and investigates how common right ventricular (RV) involvement is in patients with acute myocarditis.
- - Researchers analyzed CMRI data from 27 patients with acute myocarditis and compared it with a control group of 27 healthy individuals, finding significant differences in LV ejection fraction.
- - Results indicated that while conventional RV assessment didn't show significant differences, CMRI-derived RV strain values were lower in the myocarditis group, suggesting potential subclinical RV dysfunction despite normal RV ejection fraction.
Article Synopsis
- - This work discusses the defect chemistry of rutile titanium dioxide (TiO) and explores how reversible atomic-size structural defects can be engineered for improved TiO-based energy materials, like photoelectrodes and photocatalysts.
- - It emphasizes the importance of using thermodynamics in understanding and manipulating surface defects, which play a crucial role in enhancing reactivity and performance of these materials under operational conditions.
- - The study introduces a high-temperature electron probe as a reliable tool for monitoring defect-related surface properties, leading to new insights into stable performance during processes like photoelectrochemical water splitting and the operation of solid oxide fuel cells.