Six compounds from the aerial parts of the Argentinean plant Hymenoxys robusta (Rusby) Parker were isolated and their structures elucidated using extensive spectroscopic analyses. These compounds comprise two inositol derivatives and four 3,4-seco-pseudoguaianolides, including vermeerin. Bioactivity assays of these compounds against bacterial and fungal pathogens showed that only vermeerin possessed antimicrobial activity specific against Staphylococcus aureus, and showed no toxicity when exposed to human-derived macrophages.
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http://dx.doi.org/10.1016/j.phytochem.2011.09.001 | DOI Listing |
BMC Microbiol
December 2024
Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya, 572000, China.
Parrotfish are a common fish in coral reef areas, but little is known about their gut microbial communities. In addition, parrotfish are capable of sex reversal, usually some males are sexually reversed from females, and it is still not known whether this sex reversal leads to significant changes in gut microbial communities. In this study, we investigated the gut microbial communities of three species of parrotfish including Scarus forsteni (4 females and 4 sex-reversed males), Scarus ghobban (5 females and 5 sex-reversed males), and Hipposcarus longiceps (5 females and 5 sex-reversed males) by using high-throughput sequencing technology.
View Article and Find Full Text PDFInt J Mol Sci
December 2024
School of Medicine, Huaqiao University, Quanzhou 362021, China.
Understanding the molecular targets of natural products is crucial for elucidating their mechanisms of action, mitigating toxicity, and uncovering potential therapeutic pathways. Icaritin (ICT), a bioactive flavonoid, demonstrates significant anti-tumor activity but lacks defined molecular targets. This study employs an advanced strategy integrating proteolysis targeting chimera (PROTAC) technology with quantitative proteomics to identify ICT's key targets.
View Article and Find Full Text PDFInt J Mol Sci
November 2024
Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China.
Genetic abnormalities of the parathyroid hormone 1 receptor (PTH1R) lead to profound craniomaxillofacial bone and dentition defects on account of inappropriate tissue metabolism and cellular differentiation. The coordinated activity of differentiation and viability in bone cells is indispensable for bone metabolism. Recent research demonstrates mesenchymal progenitors are responsive to PTH1R signaling for osteogenic differentiation, whereas the effect of PTH1R on cellular survival remains incompletely understood.
View Article and Find Full Text PDFNutrients
December 2024
Grupo de Neuropsicofarmacología, Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Unidades Clínicas de Neurología y Salud Mental, 29010 Málaga, Spain.
Background/objectives: Alzheimer's disease (AD), a leading cause of dementia, lacks effective long-term treatments. Current therapies offer temporary relief or fail to halt its progression and are often inaccessible due to cost. AD involves multiple pathological processes, including amyloid beta (Aβ) deposition, insulin resistance, tau protein hyperphosphorylation, and systemic inflammation accelerated by gut microbiota dysbiosis originating from a leaky gut.
View Article and Find Full Text PDFNutrients
November 2024
Department of Experimental Medicine, University "Sapienza", 00161 Rome, Italy.
Background: The aim of the present study was to evaluate the effectiveness and safety of a nutraceutical combination given to insulin-resistant overweight patients with altered lipid profiles. To this end, an observational study was designed in which 74 individuals (50 females and 24 males) underwent an observational period of 3 months.
Methods: During this time, a specific nutraceutical combination containing myo-inositol, glycine, , α-lipoic acid, phlorizin, zinc, vitamin B, and chromium picolinate was administered.
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