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Topic Review
Methotrexate
Methotrexate (MTX), a structural analogue of folic acid, that inhibits cell division (mainly in the S phase of the cell cycle) is commonly used for the treatment of many cancers as well for severe and resistant forms of autoimmune pathologies and inflammatory disorders. This paragraph of clinical overview presents state of knowledge with regards to different pathways of MTX active transport system, mechanisms of action and its applications as immunosuppressive drug and anticancer agent.  
  • 3.0K
  • 28 Oct 2020
Topic Review
Mevalonate Kinase Deficiency and Squalene Synthase Inhibitor (TAK-475)
Mevalonate Kinase Deficiency (MKD) is a rare inborn disease belonging to the family of periodic fever syndromes. The MKD phenotype is characterized by systemic inflammation involving multiple organs, including the nervous system. Current anti-inflammatory approaches to MKD are only partially effective and do not act specifically on neural inflammation. According to the new emerging pharmacology trends, the repositioning of drugs from the indication for which they were originally intended to another one can make mechanistic-based medications easily available to treat rare diseases. According to this perspective, the squalene synthase inhibitor Lapaquistat (TAK-475), originally developed as a cholesterol-lowering drug, might find a new indication in MKD, by modulating the mevalonate cholesterol pathway, increasing the availability of anti-inflammatory isoprenoid intermediates.
  • 576
  • 19 Oct 2021
Topic Review
Mexican Medicinal Plants
Some natural compounds belonging to the group of Mexican medicinal plants or “Mexican folk medicine”are  used for pain management in Mexico.
  • 542
  • 14 May 2021
Topic Review
Mexican Plants with Teratogenic Effects
In Mexico, the use of medicinal plants is the first alternative to treat the diseases of the most economically vulnerable population. Some species with teratogenic effects and the main alterations that were found in the nervous system and axial skeleton, induced by compounds such as alkaloids, terpenes, and flavonoids. 
  • 503
  • 08 Jul 2022
Topic Review
MGluRI and ErbB Receptors
It is well-appreciated that phosphorylation is an essential post-translational mechanism of regulation for several proteins, including group 1 metabotropic glutamate receptors (mGluRI), mGluR1 and mGluR5 subtypes. While contributions of various serine/threonine protein kinases on mGluRI modulation have been recognized, the functional role of tyrosine kinases (TKs) is less acknowledged. Here, we describe current evidence on the modulatory roles of the ErbB tyrosine kinases receptors - activated by the neurotrophic factors neuregulins (NRGs) - on mGluRI function. Available evidence suggests that mGluRI activity is tightly dependent on ErbB signaling, and that ErbB's modulation profoundly influences mGluRI-dependent effects on neurotransmission, neuronal excitability, synaptic plasticity, and learning and memory processes. 
  • 969
  • 13 Nov 2020
Topic Review
Micro- and Nanosized Carriers for Nose-to-Brain Drug Delivery
The intranasal route of drug administration offers numerous advantages, such as bypassing the intestine, avoiding first-pass metabolism, and reducing systemic side effects. Moreover, it circumvents the BBB, providing direct entrance to the brain through the olfactory and trigeminal nerve pathways.  Micro- and nanotechnological approaches were widely used to overcome these limitations and enhance the availability of drugs in the brain tissue. Micro- and nanoparticulate carriers are composed of natural or synthetic materials that interact with biological structures at the molecular level and lead the treatment of NDs into a new direction. They may induce interaction between target sites, thus minimizing the side effects.
  • 590
  • 22 Aug 2022
Topic Review
Microbial Biosurfactants
Surface-active molecules also known as surfactants are chemicals that have key impacts on several aspects of our daily products and life. Most of these chemical surfactants originate from petrochemical of oleochemical sources and are ingredients of household laundry cleaning agents, cosmetics, pharmaceutical, environmental cleaning products, petroleum, and agro-food processing industry. Worldwide use of these compounds has been steadily increasing during the past few decades and will be further increasing in the future.  Most such chemical surfactants  however, have negative effects on the environment, a fact that led to the search for alternatives with less impact and the shift towards a more sustainable environmental friendly biological surfactants (biosurfactants) which was mainly driven by the sustainability agenda by many international players in the field. Most these biosurfactants are produced by microorganisms (bacteria and fungi) and the advantages they bring include much lower toxicity, relative stability at high temperature and in adverse environments in addition to being readily biodegradable when, discharged into the environment. Many chemical surfactants included in cosmetic and pharmaceutical compounds have been reported to have the potential to cause detrimental effects such as allergic reactions and skin irritations to the human skin which encouraged the search for a more suitable replacements  with less or no negative effects on skin health. As biosurfactants were known to exhibit skin compatibility, protection and surface moisturizing effects which are key components for an effective skincare routine in addition to lower toxicity. Interest therefore in biosurfactants that have antimicrobial, skin surface moisturizing and low toxicity properties which would make them suitable substitutes for chemical surfactants in current cosmetic and personal skincare and pharmaceutical formulations has been steadily increasing. 
  • 802
  • 24 Mar 2023
Topic Review
Microbial Hyaluronic Acid Production
Microbial production of hyaluronic acid (HA) is an area of research that has been gaining attention in recent years due to the increasing demand for this biopolymer for several industrial applications. Hyaluronic acid is a linear, non-sulfated glycosaminoglycan that is widely distributed in nature and is mainly composed of repeating units of N-acetylglucosamine and glucuronic acid. It has a wide and unique range of properties such as viscoelasticity, lubrication, and hydration, which makes it an attractive material for several industrial applications such as cosmetics, pharmaceuticals, and medical devices.
  • 1.5K
  • 02 Mar 2023
Topic Review
Microbiota
The human gut microflora comprises over 1000 species and more than 7000 strains, representing 1013–1014 bacterial cells, which is ten times more numerous than other cells. Healthy gut microbiota is mainly composed of the phyla Firmicutes and Bacteroidetes, representing around 90% of the human gut flora, followed by Actinobacteria, Verrucomicrobia, and Proteobacteria.
  • 985
  • 18 Jan 2022
Topic Review
Microfluidic Approaches for Affinity-Based Exosome Separation
As a subspecies of extracellular vesicles (EVs), exosomes have provided promising results in diagnostic and theranostic applications in recent years. The nanometer-sized exosomes can be extracted by liquid biopsy from almost all body fluids, making them especially suitable for mainly non-invasive point-of-care (POC) applications. To achieve this, exosomes must first be separated from the respective biofluid. Impurities with similar properties, heterogeneity of exosome characteristics, and time-related biofouling complicate the separation. Due to the compactness of state-of-the-art methods available for the separation of exosomes, quick analysis time and portable form factor, these microfluidic devices are particularly suitable to deliver fast and reliable results for POC applications. For these devices, new manufacturing methods (e.g., laminating, replica molding and 3D printing) that use low-cost materials and do not require clean rooms are presented. Additionally, special flow routes and patterns that increase contact surfaces, as well as residence time, and thus improve affinity purification are displayed. 
  • 273
  • 25 Aug 2022
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