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Topic Review
Caffeic Acid Phenethyl Ester
Caffeic acid phenethyl ester (CAPE), is one of the most extensively investigated active components of propolis and it is considered responsible for most of its beneficial effects. Among the others, CAPE exerts protection towards many neurological disorders. This review summarizes the protective effects of CAPE towards oxidative stress, inflammation, apoptosis, neurotoxic substances, neurodegenerative diseases, brain tumors and neuronal injuries as well. A paragrah on derivatives of CAPE is also included.
  • 1.4K
  • 30 Mar 2021
Topic Review Video
Plant-Derived Extracellular Vesicles for Next-Generation Drug Delivery
Plant cells release tiny membranous vesicles called extracellular vesicles (EVs), which are rich in lipids, proteins, nucleic acids, and pharmacologically active compounds. These plant-derived EVs (PDEVs) are safe and easily extractable and have been shown to have therapeutic effects against inflammation, cancer, bacteria, and aging. They have shown promise in preventing or treating colitis, cancer, alcoholic liver disease, and even COVID-19. PDEVs can also be used as natural carriers for small-molecule drugs and nucleic acids through various administration routes such as oral, transdermal, or injection. The unique advantages of PDEVs make them highly competitive in clinical applications and preventive healthcare products in the future.
  • 1.4K
  • 31 May 2023
Topic Review
Chitosan-Based Delivery Systems for Carotenoids
Carotenoids are secondary metabolites present in microorganisms (bacteria, yeast, fungi, and microalgae) and higher plants. They cannot be produced by the human organism. In nature, their principal role is to attract different light wavelengths and transfer their energy to chlorophylls, a function occurring mainly in photosynthetic organisms. Moreover, they can act as photo-protectors, precursors of hormonal substances, antistress secondary metabolites, and attractive agents in plant–insect interaction.
  • 1.4K
  • 27 Sep 2023
Topic Review
CD38–Cyclic ADP-Ribose Signal System
Calcium (Ca2+) is a ubiquitous and fundamental signaling component that is utilized by cells to regulate a diverse range of cellular functions, such as insulin secretion from pancreatic β-cells of the islets of Langerhans. Cyclic ADP-ribose (cADPR), synthesized from NAD+ by ADP-ribosyl cyclase family proteins, such as the mammalian cluster of differentiation 38 (CD38), is important for intracellular Ca2+ mobilization for cell functioning. cADPR induces Ca2+ release from endoplasmic reticulum via the ryanodine receptor intracellular Ca2+ channel complex, in which the FK506-binding protein 12.6 works as a cADPR-binding regulatory protein.
  • 1.4K
  • 20 Apr 2022
Topic Review
Synthetic Oleanolic Acid Derivatives
Oleanolic acid (3β-hydroxyolean-12-en-28-oic acid) is a pentacyclic triterpenoid, widely occurring in the plant kingdom, which includes edible and medicinal plants. The richest source of oleanolic acid (OA) are the leaves of the olive plant. Common culinary spices such as garden thyme and clove plants, as well as fruits, are also sources of OA.
  • 1.4K
  • 22 Sep 2021
Topic Review
PPAR Alpha
Peroxisome proliferator-activated receptor α is a potent regulator of systemic and cellular metabolism and energy homeostasis, but it also suppresses various inflammatory reactions.
  • 1.4K
  • 19 Oct 2021
Topic Review
M1 Family of Metalloaminopeptidases
Proteolytic enzymes, also known as peptidases, are one of the most abundant groups of enzymes in living organisms. They control the activation, synthesis and turnover of proteins, and regulate most biochemical and physiological processes, such as digestion, fertilization, growth, differentiation, cell signaling/migration, immunological defense, wound healing, and apoptosis. They are consequently major regulators of homeostasis, ageing, and different human diseases like cancer, hypertension, diabetes, inflammation, neurodegeneration, Alzheimer among others. Proteases are also essential for propagation of infectious agents, being major contributors of pathogenesis in several infectious diseases, including the current coronavirus emergent pandemic SARS COVID 19. Among peptidases, aminopeptidases catalyze the cleavage of the N-terminal amino acids of proteins or peptide substrates. They are distributed in many phyla and play critical roles in physiology and pathophysiology. Many of them are metallopeptidases belonging to the M1 and M17 families, among others. Some, such as M1 aminopeptidases N and A, thyrotropin-releasing hormone-degrading ectoenzyme, and M17 leucyl aminopeptidase, are targets for the development of therapeutic agents for human diseases, including cancer, hypertension, central nervous system disorders, inflammation, immune system disorders, skin pathologies, and infectious diseases, such as malaria. 
  • 1.4K
  • 23 May 2023
Topic Review
Oxygen-Based Molecules
Oxygen-based compounds are an instrumental part of the group of small, relatively reactive molecules which control cellular activities. Traditionally such molecules have been referred to as the reactive oxygen species (ROS) and include hydrogen peroxide (H2O2), superoxide (O2∙−), and hydroxyl radicals (∙OH). However, several other reactive signaling molecules also contain oxygen, although referred to as reactive nitrogen species (RNS). These include nitric oxide (NO) and peroxynitrite (ONOO−), and therefore could be grouped together with the ROS as oxygen-based compounds. 
  • 1.3K
  • 04 Aug 2021
Topic Review
Lysine63Ubiquitination and Fibrosis in Diabetes
Diabetic Nephropathy (DN) is the leading cause of end-stage renal disease. We previously showed that tubulo-interstitial accumulation of lysine 63 (K63)-ubiquitinated (Ub) proteins drives the progression of fibrosis in DN and that the extent of renal K63-Ub can be easily monitored through the assessment of urinary miR-27b-3p. In the present manuscript we explored the renoprotective effect of a specific K63-Ub inhibitor (NSC697923), alone and in combination with the ACE inhibitor molecule Ramipril. In vitro, in tubular epithelial cells, we found that NSC697923, aside from suppressing tubular accumulation of K63-Ub proteins was also capable to inhibit hyperglycemia-induced epithelial to mesenchymal transition (EMT); specifically, treatment with NSC697923 reduced the expression of EMT markers such as α-SMA, Collagen I, Vimentin, FSP-1 and Collagen III along with tubulointerstitial and glomerular fibrosis both in vitro and in vivo. Diabetic DBA/2J mice treated with NSC697923 also displayed recovery of urinary miR-27b-3p and restored expression of p16INK4A, indicating a protective effect of this compund on cellular senescence in tubular cells. Moreover, we found that the combination of NSC697923 and Ramipril was effective to reduce uACR in diabetic DBA/2J mice. In conclusion, we suggest that selective inhibition of K63-Ub, when combined with the conventional treatment with ACE inhibitors, might represent a novel treatment strategy to prevent the progression of fibrosis and proteinuria in DN. Finally we suggest the dosage of urinary miR-27b-3p levels to monitor treatment efficacy.
  • 1.3K
  • 23 Jun 2021
Topic Review
Polyamines Catabolism
Polyamines (PAs) are organic polycations found ubiquitously in organisms, and, in mammals, they are mainly represented by putrescine (Put), spermidine (Spd), spermine (Spm) and their acetylated forms.
  • 1.3K
  • 01 Aug 2022
Topic Review
LGMD2D myotubes
LGMD2D (LGMD-R3 according to the new nomenclature) is a rare autosomal recessive disease affecting striated muscle. It belongs to the group of limb girdle muscular dystrophies because of the involvement of the proximal musculature of the shoulders and pelvic girdle. LGMD2D is caused by mutations in the SGCA gene coding for α-sarcoglycan (SG).  
  • 1.3K
  • 01 Nov 2020
Topic Review
Bile Salt Hydrolases
Bile salt hydrolase (BSH; EC 3.5.1.24) is an enzyme produced by the intestinal microbiota that catalyzes the hydrolysis of amide bonds in conjugated BAs, resulting in the release of free amino acids. These enzymes belong to the N-terminal nucleophilic (Ntn) hydrolase superfamily and share a similar αββα-core structure to an N-terminal catalytic cysteine residue. This residue is critical to the catalysis mechanism and acts both as a nucleophile and a proton donor. The N-terminal amino group serves as the proton acceptor and activates the nucleophilic thiol group of the cysteine side chain. Besides the cysteine residue, other amino acids conserved in most BSHs are also relevant to the catalytic reaction, including Arg18, Asp21, Asn82, Asn175, and Arg228.
  • 1.3K
  • 27 May 2021
Topic Review
Oxidative-Stress Modulators in Hematological Malignancies
Among the different mechanisms involved in oxidative stress, protein carbonylation and lipid peroxidation are both important modifications associated with the pathogenesis of several diseases, including cancer. Hematopoietic cells are particularly vulnerable to oxidative damage, as the excessive production of reactive oxygen species and associated lipid peroxidation suppress self-renewal and induce DNA damage and genomic instability, which can trigger malignancy. A richer understanding of the clinical effects of oxidative stress might improve the prognosis of these diseases and inform therapeutic strategies. The most common protein carbonylation and lipid peroxidation compounds, including hydroxynonenal, malondialdehyde, and advanced oxidation protein products, have been investigated for their potential effect on hematopoietic cells in several studies.
  • 1.3K
  • 17 Jan 2021
Topic Review
Ribonucleoside Hydrolase Structure
Ribonucleoside hydrolases are enzymes that catalyze the cleavage of ribonucleosides to nitrogenous bases and ribose. These enzymes are found in many organisms: bacteria, archaea, protozoa, metazoans, yeasts, fungi and plants.
  • 1.3K
  • 20 Sep 2023
Topic Review
MiR-615
miR-615, a miRNA highly conserved across eutherian mammals. It is involved not only during embryogenesis in the regulation of growth and development, for instance during osteogenesis and angiogenesis, but also in the regulation of cell growth and the proliferation and migration of cells, acting as a tumor suppressor or tumor promoter. It, therefore, serves as a biomarker for several types of cancer and recently has also been found to be involved in reparative processes and neural repair.
  • 1.3K
  • 27 Oct 2020
Topic Review
Ubisol-Q10 for Neurodegenerative Disease Treatment
It is well established and accepted that excessive oxidative stress is a key contributor to neurodegenerative diseases, driving interest in the development and application of redox therapies including the use of coenzyme-Q10 (CoQ10). However, in several human clinical trials, CoQ10 has failed to show efficacy, possibly due to poor tissue penetration and inability to deliver it parenterally. Ubisol-Q10 is a nanomicellar, water-dispersible formulation of CoQ10 that was created by combining CoQ10 with an amphiphilic and self-emulsifying molecule of polyoxyethanyl α-tocopheryl sebacate (PTS). This stable formulation is suitable for parenteral delivery and when tested at micromolar concentrations (well within FDA guidelines), it showed unprecedented neuroprotection, both in cellular models and animal models of chronic progressive neurodegeneration of both Parkinson’s and Alzheimer’s type. Systemic application of Ubisol-Q10 in drinking water stopped further progression of ongoing neurodegeneration as long as Ubisol-Q10 was provided. Mechanistically, this treatment with Ubisol-Q10 mobilized astroglia response in the CNS, quenched reactive oxygen species, prevented cell senescence, activated autophagy, reduced inflammation, and stabilized mitochondria. Importantly, these biochemical outcomes are accompanied by a significant improvement in behavioral deficits typically observed in animals with Parkinson’s and Alzheimer’s disease. Thus, Ubisol-Q10 is a promising candidate for developing a disease-modifying therapeutic intervention for neurodegenerative diseases that can be easily administered as drinking tonic.
  • 1.3K
  • 20 May 2021
Topic Review
Molecular Mechanisms of Eosinophilic Esophagitis
Eosinophilic esophagitis is a recently recognized allergic-mediated disease with eosinophil-predominant esophagus inflammation. Its pathogenesis is a complicated network of interactions and signaling between epithelial, mesenchymal, and immune cells on molecular and intercellular levels.
  • 1.3K
  • 15 Dec 2021
Topic Review
Insights into the Pharmacological Effects of Flavonoids
Flavonoids are widely occurring secondary metabolites of plants. Currently, there is a trend of article numbers increasing, which focuses on the computer modeling of flavonoid interactions with biological targets. Such studies help to accumulatethe data on lead compounds that can find medicinal implementation, including COVID-19. Flavanonol taxifolin demonstrated wound-healing activity. Luteolin, apigenin, and wogonin, which can be classified as flavones, show induced neutrophil apoptosis and have potential as neutrophil apoptosis-inducing anti-inflammatory, proresolution agents.
  • 1.3K
  • 10 Jun 2022
Topic Review
Nasal Air Conditioning and SARS-CoV-2
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), as with the influenza virus, has been shown to spread more rapidly during winter. Severe coronavirus disease 2019 (COVID-19), which can follow SARS-CoV-2 infection, disproportionately affects older persons and males as well as people living in temperate zone countries with a tropical ancestry. The available data are consistent with optimal warming and humidifying of inspired air by the nose (nasal air conditioning) being essential for minimising SARS-CoV-2 infectivity of the upper respiratory tract (URT)  and, as a consequence, severe COVID-19. 
  • 1.3K
  • 04 Jan 2022
Topic Review
Human Neuroblastoma Cell
Neuroblastoma is one of the most common childhood solid tumors and develops from neural stem cells that normally comprise the embryonic structure termed the neural crest. Human neuroblastoma cell lines have special properties as they exhibit cell growth and are induced to become mature neurons by drugs such as retinoid.
  • 1.3K
  • 21 Oct 2021
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