Results 81 to 90 of about 3,911 (190)

Untargeted Metabolomic and Lipidomic Profiles of Gingival Crevicular Fluid in the Context of Periodontitis

Journal of Clinical Periodontology, EarlyView.
ABSTRACT Aim(s) This cross‐sectional clinical study aimed to explore the untargeted metabolomic and lipidomic profiles in gingival crevicular fluid (GCF) obtained from healthy individuals and patients with periodontitis. Materials and Methods GCF was collected from 17 periodontally healthy and 19 periodontitis patients.
Caroline H. Henderzahs, Chiaki Yamada, Alexandr Morozov, Thelmalane Yalartai, Vanchit John, Hawra AlQallaf, Alexandru Movila   +6 more
wiley   +1 more source

Quantifying the Dynamics of Pesticides in Natural Waters

CHIMIA, 1997
A variety of trace analytical methods (solid-phase and liquid-liquid extraction, HPLC and GC-MS) for quantitatively assessing the input and behavior of pesticides and their metabolites (i.e., triazines, acetamides, phenoxy acids and organotin ...
Stephan R. Müller
doaj   +2 more sources

Convergent synthesis of new N -substituted 2-{[5-(1H -indol-3-ylmethyl)-1,3,4-oxadiazol-2-yl]sulfanyl}acetamides as suitable therapeutic agents

Brazilian Journal of Pharmaceutical Sciences, 2015
A series of N-substituted 2-{[5-(1H-indol-3-ylmethyl)-1,3,4-oxadiazol-2-yl]sulfanyl}acetamides (8a-w) was synthesized in three steps. The first step involved the sequential conversion of 2-(1H-indol-3-yl)acetic acid (1) to ester (2) followed by hydrazide
Kaniz Rubab, Muhammad Athar Abbasi, Aziz-ur-Rehman, Sabahat Zahra Siddiqui, Muhammad Ashraf, Ayesha Shaukat, Irshad Ahmad, Muhammad Arif Lodhi, Farman Ali Khan, Muhammad Shahid, Muhammad Nadeem Akhtar   +10 more
doaj   +1 more source

Enhanced CO2 Coordinates the Spatial Recruitment of Diazotrophs in Rice Via Root Development

Plant, Cell &Environment, EarlyView.
ABSTRACT Understanding the reciprocal interaction between root development and coadapted beneficial microbes in response to elevated CO2 (eCO2) will facilitate the identification of nutrient‐efficient cultivars for sustainable agriculture. Here, systematic morphological, anatomical, chemical and gene expression assays performed under low‐nitrogen ...
Junwen Zhao, Yuting Chen, Qi Tao, Lukas Schreiber, Kiran Suresh, Michael Frei, Muhammad Shahedul Alam, Bing Li, Yaping Zhou, Marcel Baer, Frank Hochholdinger, Changquan Wang, Peng Yu   +12 more
wiley   +1 more source

The Diarylprolinol Silyl Ethers: After 20 Years Still Opening New Doors in Asymmetric Catalysis

Angewandte Chemie, Volume 138, Issue 11, 9 March 2026.
Catalysis Rules! The year 2025 marks the 20th anniversary of diarylprolinol silyl ethers in asymmetric organocatalysis. During the first decade after their discovery, these catalysts have been established as one of the most versatile tools in aminocatalysis. Although now considered mature, recent years have witnessed renewed innovation.
Enrico Marcantonio, René Slot Bitsch, Karl Anker Jørgensen   +2 more
wiley   +2 more sources

Alloxazine derivatives as multifunctional agents for photodynamic therapy, cancer cell imaging, and cell proliferation inhibition

Photochemistry and Photobiology, EarlyView.
Alloxazine photosensitizers, molecularly engineered through sugar conjugation and methoxy substitution to enhance solubility, photodynamic potency, and fluorescence, enable image‐guided photodynamic therapy while inhibiting cancer cell growth in the absence of photoactivation.
Rubej R. Khan, Sourav Kanti Seth, Reshma Mathew, Nitza V. Falcón‐Cruz, Chris Acquah, Steffen Jockusch, Liraz Levi, Carlos E. Crespo‐Hernández   +7 more
wiley   +1 more source

Electronic Smoking Devices Among University Students: Usage Patterns and Chemical Composition of Inhaled Substances

Analytical Science Advances, Volume 7, Issue 1, June 2026.
ABSTRACT This study investigated the prevalence of electronic smoking device (ESD) use and its associated behavioural and chemical risks among university students in Bahia, Brazil. A cross‐sectional survey was conducted with 355 students from public and private institutions through an online questionnaire between April and May 2023. Among participants,
Eduard F. Valenzuela, Raffael Silva Santos Almeida, Ivana Ferreira Simões, Aline Gonçalves Miranda, Magno Oliveira Ramos, Roberto Rodrigues Bandeira Tosta Maciel, Fernanda Warken Rosa, Aníbal de Freitas Santos Júnior   +7 more
wiley   +1 more source

Organic synthesis using (diacetoxyiodo)benzene (DIB): Unexpected and novel oxidation of 3-oxo-butanamides to 2,2-dihalo-N-phenylacetamides

Beilstein Journal of Organic Chemistry, 2012
A novel and reliable method for the direct preparation of 2,2-dihalo-N-phenylacetamides is reported. The key transformation involves the cleavage of a carbon–carbon bond in the presence of DIB and a Lewis acid as the halogen source, and thus this method ...
Wei-Bing Liu, Cui Chen, Qing Zhang, Zhi-Bo Zhu   +3 more
doaj   +1 more source

Stimuli‐Responsive Crosslinked Chitosan/PVP/PEG Hydrogel Networks for Targeted Drug Delivery and Antimicrobial Performance

Analytical Science Advances, Volume 7, Issue 1, June 2026.
ABSTRACT In this study, a unique pH‐sensitive PEG/C/PVA hydrogel based on chitosan (C), polyvinyl propylene (PVP) and polyethylenglycol (PEG) crosslinked with tetraethyl orthosilicate (TEOS) was fabricated. This PEG/C/PVA hydrogel was designed to deliver different drugs with distinct release profiles, including diclofenac sodium and ciprofloxacin, and ...
Danial Mazhar, Sumra Afzal, Safia Hassan, Zahid Imran, Shabana Mehreen   +4 more
wiley   +1 more source

Structure‐Guided Optimization and Biological Validation of 1,3,4‐Thiadiazole‐Based SIRT2 Inhibitors Reinforcing Channel Entrance Interactions

Drug Development Research, Volume 87, Issue 2, April 2026.
ABSTRACT SIRT2, the cytoplasmic member of the sirtuin family, is generally acknowledged to promote cancer and contribute to the progression of various pathologies, including neurodegeneration, inflammation, obesity, and bacterial infection through the deacetylation of target substrates.
Ahmet Bugra Aksel, Fikriye Ozgencil, Filiz Bakar‐Ates, Habibe Beyza Gunindi, Alberto Massarotti, Erva Ozkan, Selen Gozde Kaya, Mahmut Gozelle, Yesim Ozkan, Gokcen Eren   +9 more
wiley   +1 more source