Results 41 to 50 of about 13,627 (214)

Toxicity Differences Between Microplastics and Nanoplastics in Organs: From Molecular Mechanisms to Potential Therapeutic Strategies

Med Research, EarlyView.
This review systematically compares the size‐dependent toxicity of microplastics and nanoplastics in the intestine, liver, kidney, lung, and brain. Particle size determines bioavailability, barrier penetration, and injury mechanisms. Because of their small size and high surface reactivity, NPs readily cross the intestinal epithelium and blood–brain ...
Yixian Cheng, Junjie Chen, Rui Fu, Jiawei Zhang, Jianguang Jia, Wei Wang, Zheng Zhang, Peng Zhang, Haosong Chen, Huake Cao, Gang Li, Weiwei Sheng, Ting Li, Bo Chen, Guodong Cao   +14 more
wiley   +1 more source

Empirical Modeling of the Carbonylation of Acetylene for the Synthesis of Succinic Anhydride Using Gas Ratio (CO/C₂H₂)

Proceedings
Succinic anhydride, a crucial chemical intermediate, finds widespread applications in pharmaceuticals, polymers, and agrochemicals. The carbonylation of acetylene presents a promising route for succinic anhydride synthesis, offering environmental ...
Collins Ubaka Mordi, Ipeghan Jonathan Otaraku, Ishioma Laurene Egun   +2 more
doaj   +1 more source

(Z)-4-(Carbomethoxymethylene)-2-(4-fluorophenyl)-4H-benzo[d][1,3]oxazine

Molbank, 2017
The title compound, (Z)-4-(carbomethoxymethylene)-2-(4-fluorophenyl)-4H-benzo[d][1,3]oxazine, was synthesized in 68% isolated yield by palladium-catalyzed oxidative cyclization-methoxycarbonylation of 4-fluoro-N-(2-((trimethylsilyl)ethynyl)phenyl ...
Francesco Pancrazzi, Elena Motti, Mirco Costa, Raffaella Mancuso, Bartolo Gabriele, Nicola Della Ca’   +5 more
doaj   +1 more source

Lewis acids as co-catalysts in Pd-based catalyzed systems of the octene-1 hydroethoxycarbonylation reaction

Open Chemistry, 2023
In this work, in order to develop new, efficient, and environmentally friendly methods for the preparation of practically valuable esters of carboxylic acids, the hydroalkoxycarbonylation reaction of octene-1 with various alcohols in the presence of ...
Shalmagambetov Kairzhan, Vavasori Andrea, Zhaksylykova Gulbanu, Kanapiyeva Fatima, Zykay Meruyert, Kudaibergenov Nurbolat   +5 more
doaj   +1 more source

Advances in Unconventional and Sustainable Synthetic Approaches to Benzopyran Scaffolds

The Chemical Record, EarlyView.
This review provides a comprehensive and critical analysis of low‐impact synthetic methodologies reported in the last 8 years (2018–2026) for the construction of benzopyran‐derived scaffolds, such as coumarins, flavones, chromones, chromenes, and chromanes. The benzopyran scaffold is a versatile family of heterocycles found in a wide range of bioactive
Nathalia B. Sá, Patrick C. Nobre, Isabelly O. Ferreira, Juliano B. Azeredo, Vanessa Nascimento   +4 more
wiley   +1 more source

Oxaziridines: Versatile Reagents in Modern Organic Synthesis

The Chemical Record, EarlyView.
Being capable of transferring an O atom and N‐group/atom, oxaziridines are considered multitasking agents. These are employed for diverse organic transformations, such as epoxidation of olefins, α‐ and γ‐hydroxylation/amination of carbonyl compounds, oxidation of sulfides, [3+2]cycloaddition with unsaturated systems.
Ajeet Chandra, Subba Rao Cheekatla, Keshaba Nanda Parida   +2 more
wiley   +1 more source

Exploring Skin Longevity Pathways: Rosa hybrid Extract-Mediated AMP-Activated Protein Kinase Activation, Antioxidant, and Autophagic Mechanisms in Human Keratinocytes

Cosmetics
The skin is continuously exposed to environmental changes, rendering it vulnerable to damage from external stressors that contribute to premature skin aging.
Olivier Gouin, Andrea Cavagnino, Gayané Azadiguian, Sibylle Jäger, Gilles Comte, Mohammed Bendahmane, Lionel Breton, Martin A. Baraibar, Annie F. Black   +8 more
doaj   +1 more source

Assessment of Oxidative Stress, Vitellogenin, and Human Health Risks Derived From Nile Tilapia Exposed to Metals and Metalloids in Southeastern Brazil

Environmental Toxicology, EarlyView.
ABSTRACT Urban coastal lagoons are highly vulnerable ecosystems increasingly affected by metal contamination, as well as multiple anthropogenic stressors. This study evaluated ecotoxicological and human health risks associated with chronic metal exposure in Nile tilapia (Oreochromis niloticus) from an anthropogenically impacted lagoon in southeastern ...
Julia Araújo Alves, Priscila M. O. Muniz Cunha, Shênia Patrícia Corrêa Novo, Lorena Oliveira Souza Soares, Tatiana Dillenburg Saint‐Pierre, Fábio Veríssimo Correia, André Luís de Sá Salomão, Rachel Ann Hauser‐Davis, Enrico Mendes Saggioro   +8 more
wiley   +1 more source

Investigation of the Protective Effect of Morin on Oxidative Stress and Apoptosis in Malathion‐Induced Hepatotoxicity in Rats

Environmental Toxicology, EarlyView.
ABSTRACT Malathion (MAL) is a widely used organophosphate pesticide associated with hepatotoxicity through oxidative stress and apoptosis. Morin, a naturally occurring flavonoid, exhibits potent antioxidant and anti‐inflammatory properties. This study investigated oxidative stress, inflammatory, and apoptotic alterations induced by acute and subacute ...
Seval Yılmaz, Eda İ. Demirbağ, Hakan Bağ, Ali O. Çeribaşı   +3 more
wiley   +1 more source

Bio‐Based Amino Acid Curing Additives: Mechanistic and Kinetic Effects in Epoxidized Soybean Oil Epoxy Thermosets

Journal of Vinyl and Additive Technology, EarlyView.
The curing process of epoxidized soybean oil (ESO) is feasible through the incorporation of amino acids, generating materials with greater thermal stability and improved environmental friendliness. ABSTRACT In this study, the curing and thermal degradation kinetics of epoxidized soybean oil (ESO) were investigated using L‐aspartic acid (AA) and DL ...
Nicole P. Soares, José V. M. Barreto, Amanda M. Araújo, Carlos B. B. Luna, Edcleide M. Araújo, Julio S. Reboucas, Renate M. R. Wellen   +6 more
wiley   +1 more source