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Topic Review
γδ T Cells in Staphylococcus aureus Infections
The growth of antibiotic-resistant bacterial infections necessitates focusing on host-derived immunotherapies. γδ T cells are an unconventional T cell subset, making up a relatively small portion of healthy circulating lymphocytes but a substantially increased proportion in mucosal and epithelial tissues. γδ T cells are activated and expanded in response to bacterial infection, having the capability to produce proinflammatory cytokines to recruit neutrophils and clear infection. They also play a significant role in dampening immune response to control inflammation and protecting the host against secondary challenge, making them promising targets when developing immunotherapy. Importantly, γδ T cells have differential metabolic states influencing their cytokine profile and subsequent inflammatory capacity.
  • 179
  • 05 Mar 2024
Topic Review
β-Lactam-β-Lactamase Inhibitor Agents against Gram-Negative Bacteria in Neonates
Antimicrobial resistance has become a significant public health problem globally with multidrug resistant Gram negative (MDR-GN) bacteria being the main representatives. The emergence of these pathogens in neonatal settings threatens the well-being of the vulnerable neonatal population given the dearth of safe and effective therapeutic options. Evidence from studies mainly in adults is now available for several novel antimicrobial compounds, such as new β-lactam/β-lactamase inhibitors (e.g., ceftazidime–avibactam, meropenem–vaborbactam, imipenem/cilastatin–relebactam), although old antibiotics such as colistin, tigecycline, and fosfomycin are also encompassed in the fight against MDR-GN infections that remain challenging.
  • 203
  • 03 Jul 2023
Topic Review
Zika Virus Epidemiology
Zika virus (ZIKV) is a Flavivirus and was first isolated in a sentinel monkey kept for studying mosquito-borne diseases, and was also later isolated from Aedes africanus mosquitoes, confirming its vector-borne transmission, in the Ziika forest of Uganda.
  • 317
  • 09 Jan 2023
Topic Review
Xenobiotic-Metabolizing Enzymes in Trematodes
Trematode infections occur worldwide causing considerable deterioration of human health and placing a substantial financial burden on the livestock industry. The hundreds of millions of people afflicted with trematode infections rely entirely on only two drugs (praziquantel and triclabendazole) for treatment. An understanding of anthelmintic biotransformation pathways in parasites should clarify factors that can modulate therapeutic potency of anthelmintics in use and may lead to the discovery of synergistic compounds for combination treatments.
  • 347
  • 09 Dec 2022
Topic Review
WT Parent Virus for Effective LAIV
Current influenza vaccine candidates, for potential use in vaccine manufacturing, are reassortants of master donor virus (MDV) with wild-type (WT) virus that is antigenically similar to the recommended strain. MDVs have all the necessary characteristics for the type of vaccines of which they are intended. Two types of MDVs are used in the preparation of influenza vaccines—high-yielding donors for IIV and temperature-sensitive (ts) and cold-adapted (ca) donors of attenuation—for LAIV. There are a number of main features of WT influenza virus that may dramatically affect different aspects of the preparation of egg-derived live attenuated vaccine candidates and their effectiveness. 
  • 305
  • 30 Jun 2022
Topic Review
Wickerhamomyces Yeast Killer Toxins
Bacteriocins are ribosomally synthesized antimicrobial peptides produced from a wide variety of bacteria that inhibit the growth of similar or closely related bacterial strains. A similar phenomenon of competition is present in yeasts, based on the production of killer toxins (KTs, or mycocins) that are secreted proteins or glycoproteins capable of killing susceptible microorganisms with various mechanisms of action, through interaction with specific superficial receptors. Possible implications and applications of the yeast killer phenomenon in the fight against infectious diseases are reviewed in this work, with particular reference to some wide-spectrum killer toxins (KTs) produced by Wickerhamomyces anomalus and other related species. 
  • 575
  • 15 Oct 2021
Topic Review
Whole-Person Approach to Urinary Tract Infection
Urobiome dysbiosis, defined as an imbalance in the microbial composition in the microenvironments along the urinary tract, is found in women with uncomplicated urinary tract infection (UTI). Historically, antibiotics have been used to address UTI. An alternative approach to uncomplicated UTI is warranted as the current paradigm fails to take urobiome dysbiosis into account and contributes to the communal problem of resistance. A whole-person, multi-modal approach that addresses vaginal and urinary tract dysbiosis may be more effective in reducing recurrent UTI.
  • 409
  • 18 Feb 2022
Topic Review
Weil’s Disease
Leptospirosis is one of the most widespread and dangerous zoonoses in the world. The main cause of death in leptospirosis is the development of a severe form of leptospirosis—Weil’s disease, which affects the kidneys, lungs, and liver, which are a “triad” of target organs in leptospirosis.
  • 530
  • 22 Dec 2022
Topic Review
VLP-Based Vaccines for Trypanosomatid Diseases
Virus-like particle (VLP) technology is involved in many vaccines, including those undergoing studies related to COVID-19. The potential use of VLPs as vaccine adjuvants opens an opportunity for the use of protozoan antigens for the development of vaccines against diseases caused by Trypanosoma cruzi, Leishmania spp., and Trypanosoma brucei. 
  • 591
  • 21 Jun 2021
Topic Review
Vitamin D Serum Concentrations and COVID-19
Active vitamin D [1,25(OH)2D3—calcitriol] is a secosteroid hormone whose receptor is expressed on all cells of the immune system. Vitamin D has a global anti-inflammatory effect and its role in the management of a SARS-CoV-2 infection has been investigated since the beginning of the COVID-19 pandemic.
  • 234
  • 23 Nov 2022
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