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Topic Review
Drug Delivery Hurdles in Skin Cancer Treatment
Chemotherapy of skin cancer can be either oral, parenteral, or topical. In the first case, only a limited amount of the drug reaches the target site, while the rest reaches other organs, tissues, and cells, and can cause harmful side effects. The case is quite similar in parenteral application together with its invasiveness. Therefore, the local application on different skin cancer forms can gain in therapeutic efficacy and safety. The various types of gel formulations applied topically in the treatment of skin cancer was discussed. The most common gelling agents, their concentration and mechanism of action is also provided. The possibility to combine nanotechnology for improvement of drug loading and delivery by incorporation of nanoparticles into hydrogels is also evaluated. The main methods for gel characterization in the light of topical delivery of chemotherapeutics were summarized.
  • 337
  • 05 May 2023
Topic Review
Molecular Mechanisms of Immunoregulatory Function of DPSCs
Dental pulp stem cells (DPSCs) are mesenchymal stem cells (MSCs) derived from dental pulp tissue, which have high self-renewal ability and multi-lineage differentiation potential. With the discovery of the immunoregulatory ability of stem cells, DPSCs have attracted much attention because they have similar or even better immunomodulatory effects than MSCs from other sources. DPSCs and their exosomes can exert an immunomodulatory ability by acting on target immune cells to regulate cytokines. DPSCs can also migrate to the lesion site to differentiate into target cells to repair the injured tissue, and play an important role in tissue regeneration.
  • 271
  • 05 May 2023
Topic Review
Treatment Advances in Sepsis and Septic Shock
Sepsis is defined as a life-threatening organ dysfunction caused by a dysregulated host response to infection, and it affects over 25 million people every year. Even more severe, septic shock is a subset of sepsis defined by persistent hypotension, and hospital mortality rates are higher than 40%. As new pathophysiological mechanisms have been uncovered, immunostimulatory therapy has emerged as a promising path forward. Highly investigated treatment strategies include cytokines and growth factors, immune checkpoint inhibitors, and even cellular therapies.
  • 303
  • 04 May 2023
Topic Review
Mechanisms of Neurorespiratory Toxicity Induced by Fentanyl Analogs
In 2020, fentanyl and its analogs contributed to ~65% of drug-attributed fatalities in the USA, with a threatening increasing trend during the last ten years. These synthetic opioids used as potent analgesics in human and veterinary medicine have been diverted to recreational aims, illegally produced and sold. Like all opioids, central nervous system depression resulting from overdose or misuse of fentanyl analogs is characterized clinically by the onset of consciousness impairment, pinpoint miosis and bradypnea. However, contrasting with what observed with most opioids, thoracic rigidity may occur rapidly with fentanyl analogs, contributing to increasing the risk of death in the absence of immediate life support. Various mechanisms have been proposed to explain this particularity associated with fentanyl analogs, including the activation of noradrenergic and glutamatergic coerulospinal neurons and dopaminergic basal ganglia neurons. Due to the high affinities to the mu-opioid receptor, the need for more elevated naloxone doses than usually required in morphine overdose to reverse the neurorespiratory depression induced by fentanyl analogs has been questioned. 
  • 321
  • 03 May 2023
Topic Review
DNA-Based Nanomaterials as Drug Delivery Platforms in Tumors
DNA nanotechnology has significantly advanced and might be used in biomedical applications, drug delivery, and cancer treatment. DNA nanomaterials are widely used in biomedical research involving biosensing, bioimaging, and drug delivery since they are remarkably addressable and biocompatible. Gradually, modified nucleic acids have begun to be employed to construct multifunctional DNA nanostructures with a variety of architectural designs. Aptamers are single-stranded nucleic acids (both DNAs and RNAs) capable of self-pairing to acquire secondary structure and of specifically binding with the target. Diagnosis and tumor therapy are prospective fields in which aptamers can be applied. Many DNA nanomaterials with three-dimensional structures have been studied as drug delivery systems for different anticancer medications or gene therapy agents. Different chemical alterations can be employed to construct a wide range of modified DNA nanostructures. Chemically altered DNA-based nanomaterials are useful for drug delivery because of their improved stability and inclusion of functional groups.
  • 639
  • 27 Apr 2023
Topic Review
Nano-Gels in Skin Cancer
Nano-gels, a dual combination of hydrogels and nanoparticles, have demonstrated significant promise as a targeted drug delivery system in the treatment of cancer, attributing to excellent drug loading capacity. Skin disorders, the 4th foremost source of non-fatal diseases, are frequently the outward manifestation of more serious systemic illnesses, such as HIV, and neglected tropical diseases, such as elephantiasis and other ailments causing lymphedema.
  • 469
  • 27 Apr 2023
Topic Review
Potassium Ion Channels in Glioma
Ion channels are transmembrane proteins that create a regulated pore structure through which ions can pass across the lipid bilayer of biological membranes. Ion channels, specifically those controlling the flux of potassium across cell membranes, have been shown to exhibit an important role in the pathophysiology of glioma, the most common primary central nervous system tumor with a poor prognosis.
  • 283
  • 25 Apr 2023
Topic Review
The Use of Dendrimers for Biomedical Applications
Dendrimers are three-dimensional nanostructures with a high degree of molecular homogeneity, adjustable size, multivalence, high surface functionality, and high aqueous solubility. Due to these important and attractive properties, dendrimers are already being used to deliver a number of drugs and are being explored as promising carriers for nucleic acid-based vaccines. Here summarizes the literature data on the biosafety of some dendrimers has been evaluated in several clinical trials.
  • 722
  • 25 Apr 2023
Topic Review
Endocannabinoid Signaling Pathways
Endocannabinoids play an important role as powerful regulators of synaptic function in the central nervous system where they regulate neural functions and behaviors. As fundamental modulators of synaptic function, endocannabinoids can regulate neural functions such as cognition, motor control, pain, and feeding behavior. The interaction between endogenous or exogenous ligands and endocannabinoid receptors initiates signaling pathways.
  • 308
  • 24 Apr 2023
Topic Review
Fusarium-Derived Secondary Metabolites with Antimicrobial Effects
Fungal microbes are important in the creation of new drugs, given their unique genetic and metabolic diversity. As one of the most commonly found fungi in nature, Fusarium spp. has been well regarded as a prolific source of secondary metabolites (SMs) with diverse chemical structures and a broad spectrum of biological properties. However, little information is available concerning their derived SMs with antimicrobial effects. By extensive literature search and data analysis, as many as 185 antimicrobial natural products as SMs had been discovered from Fusarium strains by the end of 2022.
  • 240
  • 21 Apr 2023
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