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Topic Review
Filaggrin
Filaggrin (FLG) is a large (37-kD), histidine rich protein named after its ability to aggregates keratin intermediate filaments (Filament aggregating Protein). FLG is an important epidermal structural protein, crucial to the structure and function of the stratum corneum (SC) and is largely involved in the maintenance of skin barrier function. FLG deficiency or dysfunction can lead to various skin disorders such as xerosis, ichthyosis vulgaris and atopic dermatitis (AD). It has been proposed that the level of FLG and its degradation products are influenced not only by the FLG loss-of-function mutations but also by endogenous or exogenous factors. 
  • 614
  • 09 Jul 2021
Topic Review
Filaggrin in Atopic Dermatitis
The discovery in 2006 that loss-of-function mutations in the filaggrin gene (FLG) cause ichthyosis vulgaris and can predispose to atopic dermatitis (AD) galvanized the dermatology research community and shed new light on a skin protein that was first identified in 1981. However, although outstanding work has uncovered several key functions of filaggrin in epidermal homeostasis, a comprehensive understanding of how filaggrin deficiency contributes to AD is still incomplete, including details of the upstream factors that lead to the reduced amounts of filaggrin, regardless of genotype.
  • 611
  • 16 May 2022
Topic Review
Flat/Intended/Aspine Post-Synapses
Brain synapses are neuronal structures of the greatest interest. In the brain, the distribution of flat/intended and that of spinal post-synapses are not random. Coverage by flat/intended predominates in dendritic fibers of inhibitory neurons.
  • 442
  • 01 Sep 2022
Topic Review
Flavones in Hypertensive Disease
Hypertension is the leading remediable risk factor for cardiovascular morbidity and mortality in the United States. Excess dietary salt consumption, which is a catalyst of hypertension, initiates an inflammatory cascade via activation of antigen-presenting cells (APCs). This pro-inflammatory response is driven primarily by sodium ions (Na+) transporting into APCs by the epithelial sodium channel (ENaC) and subsequent NADPH oxidase activation, leading to high levels of oxidative stress. Flavonoids, a natural phenolic compound, have these therapeutic benefits and can potentially serve as anti-hypertensives. Flavones are a type of flavonoid that have increased anti-inflammatory effects that may allow them to act as therapeutic agents for hypertension, including diosmetin, which is able to induce significant arterial vasodilation in several different animal models.
  • 333
  • 02 Nov 2023
Topic Review
Flavonoids as Modulators of Potassium Channels
Potassium channels are widely distributed integral proteins responsible for the effective and selective transport of K+ ions through the biological membranes. According to the existing structural and mechanistic differences, they are divided into several groups. All of them are considered important molecular drug targets due to their physiological roles, including the regulation of membrane potential or cell signaling. Among the pharmaceuticals of plant origin, which are potassium channel modulators, flavonoids appear as a powerful group of biologically active substances. It is caused by their well-documented anti-oxidative, anti-inflammatory, anti-mutagenic, anti-carcinogenic, and antidiabetic effects on human health.
  • 634
  • 30 Jan 2023
Topic Review
Flipons and Condensates Enhances Evolution
A number of insights derive from viewing flipons as scaffolds for condensates. Flipons provide a controlled way to initiate condensate formation, one subject to natural selection. The alternative conformation localizes required factors needed to regulate transcription, RNA processing, and epigenetic modification, while excluding nucleosomes and other B-DNA- and A-RNA-specific proteins that produce competing outcomes.
  • 554
  • 22 Sep 2021
Topic Review
Flow Cytometry and Respiratory Diseases
Flow cytometry (FCM) arises with the design of the cell spectrophotometer, which makes it possible to measure both the content of nucleic acids and the size of the analyzed cells. The subject of the study is not limited to humans, other animal species and bacterias can also be studied. Moreover, FCM allows identify expression of molecules in the membrane, cytoplasm or nucleus, beside soluble proteins (cytokines, chemokines, etc), extracellular vesicles, antibodies, etc.
  • 871
  • 14 Jan 2021
Topic Review
Fluorescence Microscopy
Fluorescence microscopy has become a critical tool for researchers to understand biological processes at the cellular level. Micrographs from fixed and live-cell imaging procedures feature in a plethora of scientific articles for the field of cell biology.
  • 834
  • 10 Feb 2022
Topic Review
Fluorescent Protein-Based Autophagy Biosensors
Autophagy is an important cellular process of self-degradation for dysfunctional or unnecessary molecules and organelles, thus dysregulation of autophagy can be involved in various diseases such as neurodegenerative diseases. To understand complex process of autophagy and the related diseases, various methods have been developed, for example biochemical, chemical, and imaging assays. In particular, fluorescent protein (FP)-based autophagy biosensors allow sensitive and selective monitoring of autophagy progression in live cells. After the discovery of green fluorescent protein (GFP), a variety of FPs has been discovered and engineered which have different physicochemical properties, such as excitation/emission spectra, Stokes shift, maturation rate, stability, photo-reactivity and pH-sensitivity. Advances in fluorescent protein technology and FP-based biosensors enabled the real-time monitoring of cellular and molecular events in live cells with high spatiotemporal resolutions.
  • 1.4K
  • 22 Jun 2021
Topic Review
Fluoride as an Environmental Toxin
Fluorine in its elemental form is practically not found on Earth, but it is present in the ecosphere in the form of fluorine compounds. A growing body of literature suggests that labelling fluorides as an environmental toxin appears to be correct.
  • 1.0K
  • 03 Feb 2023
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