Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 3 de 3
Filtrar
Más filtros










Base de datos
Intervalo de año de publicación
1.
PLoS One ; 18(10): e0283271, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37824496

RESUMEN

Triple-negative breast cancer (TNBC), accounting for 10-15% of all breast malignancies, is more prevalent in women under 40, particularly in those of African descent or carrying the BRCA1 mutation. TNBC is characterized by the absence of estrogen and progesterone receptors (ER, PR) and low or elevated HER2 expression. It represents a particularly aggressive form of breast cancer with limited therapeutic options and a poorer prognosis. In our study, we utilized the protein of TNBC collected from the Protein Data Bank (PDB) with the most stable configuration. We selected Scutellarein, a bioactive molecule renowned for its anti-cancer properties, and used its derivatives to design potential anti-cancer drugs employing computational tools. We applied and modified structural activity relationship methods to these derivatives and evaluated the probability of active (Pa) and inactive (Pi) outcomes using pass prediction scores. Furthermore, we employed in-silico approaches such as the assessment of absorption, distribution, metabolism, excretion, and toxicity (ADMET) parameters, and quantum calculations through density functional theory (DFT). Within the DFT calculations, we analyzed Frontier Molecular Orbitals, specifically the Highest Occupied Molecular Orbital (HOMO) and Lowest Unoccupied Molecular Orbital (LUMO). We then conducted molecular docking and dynamics against TNBC to ascertain binding affinity and stability. Our findings indicated that Scutellarein derivatives, specifically DM03 with a binding energy of -10.7 kcal/mol and DM04 with -11.0 kcal/mol, exhibited the maximum binding tendency against Human CK2 alpha kinase (PDB ID 7L1X). Molecular dynamic simulations were performed for 100 ns, and stability was assessed using root-mean-square deviation (RMSD) and root-mean-square fluctuation (RMSF) parameters, suggesting significant stability for our chosen compounds. Furthermore, these molecules met the pharmacokinetics requirements for potential therapeutic candidates, displaying non-carcinogenicity, minimal aquatic and non-aquatic toxicity, and greater aqueous solubility. Collectively, our computational data suggest that Scutellarein derivatives may serve as potential therapeutic agents for TNBC. However, further experimental investigations are needed to validate these findings.


Asunto(s)
Simulación de Dinámica Molecular , Neoplasias de la Mama Triple Negativas , Femenino , Humanos , Simulación del Acoplamiento Molecular , Neoplasias de la Mama Triple Negativas/tratamiento farmacológico , Diseño de Fármacos , Proteínas
2.
Curr Top Med Chem ; 23(14): 1380-1393, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36650651

RESUMEN

Food color additives are used to make food more appetizing. The United States Food and Drug Administration (FDA) permitted nine artificial colorings in foods, drugs, and cosmetics, whereas the European Union (EU) approved five artificial colors (E-104, 122, 124, 131, and 142) for food. However, these synthetic coloring materials raise various health hazards. The present review aimed to summarize the toxic effects of these coloring food additives on the brain, liver, kidney, lungs, urinary bladder, and thyroid gland. In this respect, we aimed to highlight the scientific evidence and the crucial need to assess potential health hazards of all colors used in food on human and nonhuman biota for better scrutiny. Blue 1 causes kidney tumor in mice, and there is evidence of death due to ingestion through a feeding tube. Blue 2 and Citrus Red 2 cause brain and urinary bladder tumors, respectively, whereas other coloring additives may cause different types of cancers and numerous adverse health effects. In light of this, this review focuses on the different possible adverse health effects caused by these food coloring additives, and possible ways to mitigate or avoid the damage they may cause. We hope that the data collected from in vitro or in vivo studies and from clinical investigations related to the possible health hazards of food color additives will be helpful to both researchers and the food industry in the future.


Asunto(s)
Colorantes de Alimentos , Animales , Humanos , Ratones , Aditivos Alimentarios/efectos adversos , Colorantes de Alimentos/efectos adversos , Hígado , Estados Unidos , United States Food and Drug Administration
3.
Biomed Pharmacother ; 153: 113305, 2022 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-35717779

RESUMEN

Nanoscale engineering is one of the innovative approaches to heal multitudes of ailments, such as varieties of malignancies, neurological problems, and infectious illnesses. Therapeutics for neurodegenerative diseases (NDs) may be modified in aspect because of their ability to stimulate physiological response while limiting negative consequences by interfacing and activating possible targets. Nanomaterials have been extensively studied and employed for cancerous therapeutic strategies since nanomaterials potentially play a significant role in medical transportation. When compared to conventional drug delivery, nanocarriers drug delivery offers various benefits, such as excellent reliability, bioactivity, improved penetration and retention impact, as well as precise targeting and administering. Upregulation of drug efflux transporters, dysfunctional apoptotic mechanisms, and a hypoxic atmosphere are all elements that lead to cancer treatment sensitivity in humans. It has been possible to target these pathways using nanoparticles and increase the effectiveness of multidrug resistance treatments. As innovative strategies of tumor chemoresistance are uncovered, nanomaterials are being developed to target specific pathways of tumor resilience. Scientists have recently begun investigating the function of nanoparticles in immunotherapy, a field that is becoming increasingly useful in the care of malignancies. Nanoscale therapeutics have been explored in this scientific literature and represent the most current approaches to neurodegenerative illnesses and cancer therapy. In addition, current findings and various biomedical nanomaterials' future promise for tissue regeneration, prospective medication design, and the synthesis of novel delivery approaches have been emphasized.


Asunto(s)
Nanopartículas , Neoplasias , Enfermedades Neurodegenerativas , Sistemas de Liberación de Medicamentos/métodos , Humanos , Nanopartículas/uso terapéutico , Neoplasias/tratamiento farmacológico , Neoplasias/patología , Enfermedades Neurodegenerativas/tratamiento farmacológico , Estudios Prospectivos , Reproducibilidad de los Resultados
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA
...