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Topic Review
Antimicrobial Stewardship Programs in Latin American Emergency Departments
Antibiotic stewardship (AS) programs have become a priority for health authorities to reduce the number of infections by super-resistant microorganisms. The need for these initiatives to minimize the inadequate use of antimicrobials is essential, and the election of the antibiotic in the emergency department usually impacts the choice of treatment if the patients need hospital admission, becoming an opportunity for antibiotic stewardship. In the pediatric population, broad-spectrum antibiotics are more likely to be overprescribed without any evidence-based management, and most of the publications have focused on the prescription of antibiotics in ambulatory settings.
  • 277
  • 01 Jun 2023
Topic Review
Antimicrobial Treatment of Pseudomonas aeruginosa Severe Sepsis
Pseudomonas aeruginosa is a pathogen often encountered in a healthcare setting. It has consistently ranked among the most frequent pathogens seen in nosocomial infections, particularly bloodstream and respiratory tract infections. Aside from having intrinsic resistance to many antibiotics, it rapidly acquires resistance to novel agents. Given the high mortality of pseudomonal infections generally, and pseudomonal sepsis particularly, and with the rise of resistant strains, treatment can be very challenging for the clinician.
  • 516
  • 03 Nov 2022
Topic Review
Antimicrobial/Antiviral Potential of Cannabinoids and Cannabis sativa
Antimicrobial resistance has emerged as a global health crisis and, therefore, new drug discovery is a paramount need. Cannabis sativa contains hundreds of chemical constituents produced by secondary metabolism, exerting outstanding antimicrobial, antiviral, and therapeutic properties.
  • 712
  • 15 Dec 2021
Topic Review
Antimyostatin Treatment
Myostatin, also known as growth and differentiation factor 8 (GDF-8), was identified in 1997 by McPherron and Lee.
  • 838
  • 09 Jun 2021
Topic Review
Antineoplastic Therapy Involved in Hypersensitivity Reactions
As widely accepted at present, in addition to their benefits, medicines can also be accompanied by side effects and adverse reactions, of which some can be detrimental to therapies or even life-threatening. In some cases, these effects are enabled or enhanced by certain individual-specific hypersensitivity. Among other manifestations, adverse reactions to drugs resulting from excessive sensitivity may include anaphylaxis. Given that regular toxicity studies are not relevant to point to possible delayed hypersensitivity reactions triggered by systemic products and from the perspective of mechanisms involved in the early and late stages phases of hypersensitivity events, in vitro and in vivo tests remain the means to reveal the cells activated and the mediators released in this process.
  • 306
  • 22 Feb 2023
Topic Review
Antineutrophil Cytoplasmatic Antibody-Associated Vasculitis
Antineutrophil cytoplasmatic antibody (ANCA)-associated vasculitis (AAV) is a group of rare autoimmune diseases characterized by inflammation of the vascular wall. The pathogenesis of AAV is strongly associated with B cell-derived ANCAs; thus, Rituximab (RTX) has become a promising drug in the induction and maintenance treatment of AAV.
  • 655
  • 02 Sep 2021
Topic Review
Antinuclear Antibodies
The discovery of antinuclear antibodies (ANAs) in the mid-20th century during studies on systemic lupus erythematosus (SLE) marked a significant breakthrough.
  • 239
  • 05 Feb 2024
Topic Review
Antinuclear Antibodies in Systemic Sclerosis
Systemic sclerosis is a systemic autoimmune rheumatic disease characterized by immune abnormalities, leading to vasculopathy and fibrosis. Autoantibody testing has become an increasingly important part of diagnosis and prognostication. Clinicians have been limited to antinuclear antibody (ANA), antitopoisomerase I (also known as anti-Scl-70) antibody, and anticentromere antibody testing. ANA are common in the general population, occurring in up to 20% of women. The presence of an ANA is not necessarily suggestive of a pathologic process, particularly at low titers.
  • 712
  • 06 Mar 2023
Topic Review
Antioxidant Activities of Natural Polysaccharides and their Derivatives
Natural polysaccharides are a type of natural biomacromolecule found in plants, fungi, algae, animals, and bacteria. Due to their nontoxic, stable, biodegradable, biocompatibility, and excellent antioxidant activity, natural polysaccharides contribute to the potential value in treating or preventing disease caused by oxidative stress. Polysaccharides can reduce the damage to the cell structure, regulate the signal pathways related to antioxidation, improve the intracellular antioxidant enzyme system, reduce the substances that easily produce reactive oxygen species (ROS), and protect the body tissue from ROS-induced damage through free radical scavenging activity and immunomodulatory activity. Natural polysaccharides play an irreplaceable therapeutic role and have received more and more attention. Publications related to natural polysaccharides are also increasing.
  • 525
  • 27 Dec 2022
Topic Review
Antioxidant Activity of Coumarins
Ubiquitously present in plant life, coumarins have multiple applications—in everyday life, in organic synthesis, in medicine and many others. They are well known for their broad spectrum of physiological effects. The specific structure of the coumarin scaffold involves a conjugated system with excellent charge and electron transport properties. The antioxidant activity of natural coumarins has been a subject of intense study for at least two decades. Significant research into the antioxidant behavior of natural/semi-synthetic coumarins and their complexes has been carried out and published in scientific literature.
  • 464
  • 11 May 2023
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