Although recent data highlight the greater protective effects exerted by Membrane Blue Dual (MBD), a precise analysis of the mechanisms of action is missing. We examined the effects of MBD with/without polyethylene glycol (PEG) on both human retinal pigment epithelial cells (ARPE-19) and retinal ganglion cells-like (RGC-5) cultured in the presence/absence of ultraviolet B (UVB) treatment on mitochondria function, oxidants, and apoptosis. In ARPE-19/RGC-5 cells either treated or not with UVB, the effects of MBD with/without PEG were evaluated by specific assays for viability, mitochondrial membrane potential and mitochondrial reactive oxygen species (mitoROS) release. Annexin V was used to detect apoptosis, whereas trypan blue and the scratch assay were used for proliferation/migration. In both physiologic conditions and in the presence of UVB, MBD with/without PEG increased cell viability, mitochondrial membrane potential, proliferation and migration in both ARPE-19 and RGC-5 cells. In general, the effects of MBD with PEG were greater than those caused by MBD without PEG. Our results suggest that, in particular, MBD with PEG is a safe and effective dye for vitreoretinal surgery through the modulation of mitochondrial function.
Chronic kidney disease (CKD) has shown a growing association with osteoporosis, comprising part of the broader CKD-mineral and bone disorder (CKD-MBD). CKD-MBD is marked by alterations in calcium, phosphorus, parathyroid hormone (PTH), and vitamin D metabolism, significantly elevating fracture risk. While traditional osteoporosis treatments such as bisphosphonates, denosumab, and teriparatide have been adapted for CKD patients, recent innovations have introduced agents aimed at enhancing bone mass and reducing fracture incidence.
Gulf war illness is a chronic multisymptom disorder that affects as many as many as 25-35% of the military personnel who were sent to the Persian Gulf war in 1991. The illness has many debilitating symptoms, including cognitive problems, gastrointestinal symptoms, and musculoskeletal pain. Those so afflicted have been sick for more than 30 years and, therefore, it has become imperative to understand the etiology and then produce treatments to ease the symptoms.
Background: The bone-vascular axis plays a key role in the pathogenesis of vascular calcification (VC) in patients with chronic kidney disease (CKD). Understanding and managing the role of the bone-vascular axis in CKD-mineral and bone disorder (CKD-MBD) is critical for preventing and treating associated complications, including osteoporosis, arterial calcification, and cardiovascular diseases. This study aimed to comprehensively summarize the role of bone metabolism markers in uremic VC.
Laboratory Branch, Division of HIV Prevention, National Center for HIV, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA.
Studies in SIV-infected macaques show that the virus reservoir is particularly refractory to conventional suppressive antiretroviral therapy (ART). We posit that optimized ART regimens designed to have robust penetration in tissue reservoirs and long-lasting antiviral activity may be advantageous for HIV or SIV remission. Here we treat macaques infected with RT-SHIV with oral emtricitabine/tenofovir alafenamide and long-acting cabotegravir/rilpivirine without (n = 4) or with (n = 4) the immune activator vesatolimod after the initial onset of viremia.
Universidade Federal do Rio Grande do Sul, Faculdade de Medicina, Programa de Pós-Graduação em Ciências Médicas: Endocrinologia, Porto Alegre, Rio Grande do Sul, Brazil; Hospital de Clínicas de Porto Alegre, Serviço de Neonatologia, Porto Alegre, Rio Grande do Sul, Brazil; Hospital de Clínicas de Porto Alegre, Serviço de Nutrologia, Porto Alegre, Rio Grande do Sul, Brazil. Electronic address:
Background: Metabolic bone disease (MBD) of newborns (NB) is characterized by tissue reduction and inadequate postnatal bone mineralization with clinical, laboratory, and/or radiologic repercussions between the third and twelfth weeks of postnatal life, which, in its most severe forms, can lead to a growth deficit and fractures. The aim of our study is to evaluate the incidence of MBD in premature patients receiving parenteral nutrition for >15 days in the neonatal intensive care unit (NICU) and assess their clinical and laboratory characteristics.
