The synthesis, physico-chemical characterization and cytotoxicity against five human tumoral cell lines (THP-1, U937, Molt-4, Colo205 and H460) of three new cobalt(II) coordination compounds are reported (i.e. Co(HL1)Cl (1), Co(HL2)Cl (2) and [Co(HL3)Cl]0.0.5 (CH3)2CHOH (3)). H2L2 (2-{[[2-hydroxy-3-(1-naphthyloxy)propyl](pyridin-2-ylmethyl)amino]methyl}phenol) and H2L3 (2-{[[2-hydroxy-3-(2-naphthyloxy)propyl](pyridin-2-ylmethyl)amino]methyl}phenol) present α and β-naphthyl groups respectively, which is absent in H2L1 (N-(2-hydroxybenzyl)-N-(2-pyridylmethyl)[(3-chloro)(2-hydroxy)]propylamine. These compounds were characterized by a range of physico-chemical methods. X-ray diffraction studies were performed for complex (3), indicating the formation of a mononuclear complex. Complexes (2) and (3), which contain α and β-naphthyl groups respectively, have presented lower IC50 values than those exhibited by complex (1). Complex (3) presents IC50 values lower than cisplatin against Colo205 (90 and 196μmolL(-1), respectively) and H460 (147 and 197μmolL(-1), respectively). These human neoplastic cells under investigation were also more susceptible toward complex (3) than peripheral blood mononuclear cells. Transmission electron microscopy investigations are in agreement with the loss of mitochondrial membrane potential (ΔΨm) observed by JC-1 mitochondrial potential sensor and indicate that the activity of complex (3) against leukemic cell line (U937) is mediated by an apoptotic mechanism associated with mitochondrial dysfunction (intrinsic pathway).
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http://dx.doi.org/10.1016/j.jinorgbio.2016.05.003 | DOI Listing |
Cancer Nurs
January 2025
Author Affiliations: Departments of Physiotherapy (Drs Heredia Ciuró, Martín Núñez, Navas Otero, Calvache Mateo, Torres Sánchez, and Valenza) and Nursing (Dr Granados Santiago), Faculty of Health Sciences, University of Granada, Granada, Spain.
Background: Increasing physical activity levels is a significant unmet need in cancer survivors, and it can likely be enhanced through a better understanding of the interventions developed. Some studies on patient-centered physical activity interventions have shown promising results in increasing daily activity levels among lung cancer survivors. However, the programs present a high heterogeneity, and there is no consensus on the parameters and their effectiveness.
View Article and Find Full Text PDFMicrobiology (Reading)
January 2025
School of Life and Environmental Sciences, The University of Sydney, Camperdown, New South Wales, Australia.
Most Gram-negative bacteria synthesize a plethora of cell surface polysaccharides that play key roles in immune evasion, cell envelope structural integrity and host-pathogen interactions. In the predominant polysaccharide Wzx/Wzy-dependent pathway, synthesis is divided between the cytoplasmic and periplasmic faces of the membrane. Initially, an oligosaccharide composed of 3-8 sugars is synthesized on a membrane-embedded lipid carrier, undecaprenyl pyrophosphate, within the cytoplasmic face of the membrane.
View Article and Find Full Text PDFJ Med Internet Res
January 2025
Department of Psychology, University of Bath, Bath, United Kingdom.
Background: Mental health problems in university students are associated with many negative outcomes, yet there is a gap between need and timely access to help. Single-session interventions (SSIs) are designed to be scalable and accessible, delivering core evidence-based intervention components within a one-off encounter.
Objective: COMET (Common Elements Toolbox) is an online self-help SSI that includes behavioral activation, cognitive restructuring, gratitude, and self-compassion.
JMIR Res Protoc
January 2025
University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States.
Background: Black adults in the United States experience disproportionately high rates of tobacco- and obesity-related diseases, driven in part by disparities in smoking cessation and physical activity. Smartphone-based interventions with financial incentives offer a scalable solution to address these health disparities.
Objective: This study aims to assess the feasibility and preliminary efficacy of a mobile health intervention that provides financial incentives for smoking cessation and physical activity among Black adults.
Vasc Biol
January 2025
K Landers, Psychology, University of Arkansas at Little Rock, Little Rock, United States.
Blood flow restriction exercise (BFRE) is a therapeutic approach traditionally used to facilitate muscular strength and hypertrophy. Emerging evidence has identified its benefits on other systems and metabolic processes. The emphasis of this study was to examine potential impact of BFRE on serum levels of tissue plasminogen activator (tPA).
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