Patricia A.M. Williams

ORCID: 0000-0002-1549-5873
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About
Contact & Profiles
Research Areas
  • Metal complexes synthesis and properties
  • Vanadium and Halogenation Chemistry
  • Free Radicals and Antioxidants
  • Metal-Catalyzed Oxygenation Mechanisms
  • X-ray Diffraction in Crystallography
  • Crystal structures of chemical compounds
  • Crystallization and Solubility Studies
  • Magnetism in coordination complexes
  • Protein Interaction Studies and Fluorescence Analysis
  • Lanthanide and Transition Metal Complexes
  • Organometallic Compounds Synthesis and Characterization
  • Electrochemical Analysis and Applications
  • Synthesis and biological activity
  • Cassava research and cyanide
  • Enzyme function and inhibition
  • Trace Elements in Health
  • Inorganic and Organometallic Chemistry
  • Computational Drug Discovery Methods
  • Synthesis and Characterization of Heterocyclic Compounds
  • Molecular Sensors and Ion Detection
  • Phytochemicals and Antioxidant Activities
  • Alkaline Phosphatase Research Studies
  • Biological Activity of Diterpenoids and Biflavonoids
  • Metal-Organic Frameworks: Synthesis and Applications
  • Nonlinear Optical Materials Research

Universidad Nacional de La Plata
2016-2025

Consejo Nacional de Investigaciones Científicas y Técnicas
2016-2025

Ottawa Hospital
2024

Royal Society of Chemistry
2024

Centre National pour la Recherche Scientifique et Technique (CNRST)
2024

Johns Hopkins All Children's Hospital
2024

Johns Hopkins University
2024

Centro Científico Tecnológico - La Plata
2019-2020

Instituto de Física La Plata
2019

University of Huddersfield
2005

Flavonoids, a polyphenolic compound family, and the vanadium compounds have interesting biological, pharmacological, medicinal properties. We report herein antitumor actions of complex [VO(chrysin)2EtOH]2 (VOchrys) on MG-63 human osteosarcoma cell line. Oxovanadium(IV), chrysin VOchrys caused concentration-dependent inhibition viability. The was strongest antiproliferative agent (p < 0.05). Cytotoxicity genotoxicity studies also showed concentration effect. Reactive oxygen species (ROS)...

10.1039/c3dt50524c article EN Dalton Transactions 2013-01-01

Abstract The thrombin receptor was the first cloned G protein–coupled reported to be activated by proteolytic cleavage of its extracellular amino terminus. A second proteinase-activated (PAR-2) recently and expressed in Xenopus laevis oocytes. PAR-2 trypsin a peptide (SLIGRL) derived from new Since mRNA detected highly vascularized organs, we compared physiological functions vascular endothelium. Thrombin both elicited endothelium-dependent relaxations prostaglandin F 2α (PGF )–contracted...

10.1161/01.res.78.4.581 article EN Circulation Research 1996-04-01

Intracerebroventricular (ICV) administration of neuropeptide Y (NPY) has been shown to decrease energy expenditure, induce hypothermia, and stimulate food intake. Recent evidence suggested that the Y5 receptor may be a significant mediator NPY-stimulated feeding. The present study attempts further characterize role NPY Y5-receptor subtypes in feeding expenditure regulation. Satiated Long-Evans rats with temperature transponders implanted interscapular brown adipose tissue (BAT) displayed...

10.1152/ajpregu.1999.277.5.r1428 article EN AJP Regulatory Integrative and Comparative Physiology 1999-11-01

DNA from neoplastic hepatic tissues of feral fish environmentally exposed to carcinogens was shown contain the guanine-derived lesion 2,6-diamino-4-hydroxy-5-formamido-pyrimidine (FapyGua). This modification appears arise attack hydroxyl radical at C-8 guanine. Concentrations ranged 0.97 5.11 nmol/mg DNA. FapyGua not detected in non-neoplastic tissue and has been previously reported occur animal tissues. The present findings support view that reactive oxygen species damage living systems...

10.1093/carcin/11.6.1045 article EN Carcinogenesis 1990-01-01

A new Cu(II) complex with the antihypertensive drug telmisartan, [Cu8Tlm16]·24H2O (CuTlm), was synthesized and characterized by elemental analysis electronic, FTIR, Raman electron paramagnetic resonance spectroscopy. The crystal structure (at 120 K) solved X-ray diffraction methods. octanuclear is a hydrate of but otherwise isostructural to previously reported [Cu8Tlm16] complex. crystallizes in tetragonal P4/ncc space group = b 47.335(1), c 30.894(3) Å, Z 4 molecules per unit cell giving...

10.1021/ic500483p article EN Inorganic Chemistry 2014-05-13
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