Comparative phytochemical and pharmacological analysis of two cultivars of Annona squamosa L. cultivated in Egypt.

This study compared two Annona squamosa L. cultivars, Abdelrazik (Annona A.) and Balady (Annona B.

Pseudocitrobacter cyperus, a novel bacterial species recovered from Cyperus alternifolius in Egypt.

Background: Strain Cyp38S was isolated as an endophyte from the plant Cyperus alternifolius, collected along the banks of the River Nile in 2019. Preliminary analysis tentatively identified Cyp38S as belonging to the genus Pseudocitrobacter.

Methods: The preliminary identification of Cyp38S was performed using the VITEK2 identification system, MALDI-TOF-MS, and 16S rRNA gene sequencing.

Diagnosis and molecular characterization of three allexiviruses infecting garlic crop in Saudi Arabia.

Forty-four samples of garlic plants showing virus-like symptoms were collected, during the growing season (2021-2022) from different locations in Qassim province, Saudi Arabia. These samples were analyzed by ELISA against the important Allium allexiviruses including garlic virus A (GarV-A), garlic virus B (GarV-B), garlic virus C (GarV-C), and Shallot virus X (ShVX). The obtained results showed that 22/44 (50%) samples were found to be infected with one of the tested viruses.

Unraveling the Atomistic Mechanism of Electrostatic Lateral Association of Peptide β-Sheet Structures and Its Role in Nanofiber Growth and Hydrogelation.

Guiding molecular assembly of peptides into rationally engineered nanostructures remains a major hurdle against the development of functional peptide-based nanomaterials. Various non-covalent interactions come into play to drive the formation and stabilization of these assemblies, of which electrostatic interactions are key. Here, the atomistic mechanisms by which electrostatic interactions contribute toward controlling self-assembly and lateral association of ultrashort β-sheet forming peptides are deciphered.

The hidden epidemic of occult hepatitis B and C among injection drug users (IDUs): A call for action.

Objective: This study aims to determine the prevalence of Occult Hepatitis B and C Infections among Egyptian injection drug users (IDUs) and identify key risk factors contributing to their occurrence within this high-risk group.

Methods: In this cross-sectional study, 200 Egyptian IDUs were assessed. Participants were negative for Hepatitis B surface antigen and hepatitis C virus (HCV) RNA, with anti-HCV positive patients who achieved sustained virologic response after treatment included.