New Dichalcogenides Induce Oxidative Stress and Cell Death of Leishmania amazonensis.

Leishmaniasis are caused by protozoa of the genus Leishmania and affect millions of people worldwide. They are considered neglected diseases that primarily impact individuals in tropical and subtropical regions. The drugs currently available for treating this infection have limitations, such as high toxicity, adverse reactions, and a long therapeutic intervention period.

Synthesis of Keratin Nanoparticles Extracted from Human Hair through Hydrolysis with Concentrated Sulfuric Acid: Characterization and Cytotoxicity.

Human hair, composed primarily of keratin, represents a sustainable waste material suitable for various applications. Synthesizing keratin nanoparticles (KNPs) from human hair for biomedical uses is particularly attractive due to their biocompatibility. In this study, keratin was extracted from human hair using concentrated sulfuric acid as the hydrolysis agent for the first time.