Publications by authors named "Adrian Orjuela"

Article Synopsis
  • POCOP-Ni(II) pincer compounds, initially studied for their catalytic properties, were evaluated for their anticancer and antioxidant activities in this research.
  • Four specific POCOP-Ni(II) complexes derived from phloroglucinol showed significant cytotoxicity against various cancer cell lines, with IC values between 2.43 and 7.85 μM.
  • The study also employed techniques like single-crystal X-ray diffraction to analyze molecular structures and suggested that these complexes can intercalate with DNA, indicating potential mechanisms for their therapeutic effects.
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Background: Carotenoids, potent antioxidants in fruits and vegetables, have recently garnered attention for their potential therapeutic effects against neurodegenerative diseases. This study focuses on the interaction and anti-aggregation properties of conventional and unconventional carotenoids found in red mamey fruit, a nutraceutical fruit that is a rich source of these compounds.

Objective: To assess computational the interaction between of amyloid-β (Aβ) peptide with a set of carotenoids and three carotenoids previously explored in experimental assays as well as to assess ADMET prediction of carotenoids selected by computational analysis results.

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A series of new D-ring ethisterones substituted with 1,4-1,2,3-triazoles were obtained in a facile manner via click chemistry reactions. The new compounds were characterized by multinuclear NMR spectroscopy, mass spectrometry, IR and unequivocally by single crystal X-ray diffraction studies for compound 1. The cytotoxic activity of these derivatives was tested against a series of human cancer cell lines including human glioblastoma (U-251), human prostatic adenocarcinoma (PC-3), human colorectal adenocarcinoma (HCT-15), human mammary adenocarcinoma (MCF-7), human chronic myelogenous leukemia (K562), and human lung adenocarcinoma (SKLU-1).

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Article Synopsis
  • Iron complexes are important in biological processes and are linked to neurological disorders like Alzheimer's and Parkinson's diseases, with their standard reduction potential (SRP) being a key property.
  • The calculation of SRPs for iron complexes is complex due to challenges in electronic structure, solvent effects, and thermodynamic cycles.
  • A new computational protocol was developed that uses a specific density functional and solvation model, yielding SRP values consistent with experimental results, which were then applied to iron complexes related to Alzheimer's disease.
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A series of benzo [] [1,3] azoles 2-substituted with benzyl- and allyl-sulfanyl groups were synthesized, and their cytotoxic activities were in vitro evaluated against a panel of six human cancer cell lines. The results showed that compounds BTA-1 and BMZ-2 have the best inhibitory effects, compound BMZ-2 being comparable in some cases with the reference drug tamoxifen and exhibiting a low cytotoxic effect against healthy cells. In silico molecular coupling studies at the tamoxifen binding site of ERα and GPER receptors revealed affinity and the possible mode of interaction of both compounds BTA-1 and BMZ-2.

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Background: The most important hallmark in the neuropathology of Alzheimer's disease (AD) is the formation of amyloid-β (Aβ) fibrils due to the misfolding/aggregation of the Aβ peptide. Preventing or reverting the aggregation process has been an active area of research. Naturally occurring products are a potential source of molecules that may be able to inhibit Aβ42 peptide aggregation.

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A series of Pt(II) complexes of the type [Pt(1,10-phenanthroline)(SArF)] (SArF = SCH-3,4-F(1); SCF-4-H (2); SCF(3)) were synthesized from [Pt(1,10-phenanthroline)(Cl)] and [Pb(SArF)] via metathesis reactions. The complexes were fully characterized including the unambiguous determination of their molecular structures by single-crystal X-ray diffraction techniques, showing the metal centers to be into a slightly distorted square-planar environments. The in vitro cytotoxic activity of the complexes was evaluated on six cancerous cell lines, i.

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