Objectives: To investigate whether a range of beta-lactam antibiotics conjugate to and hence reduce the activity of IFN-gamma, as has been shown for penicillin G. A selection of penicillins, cephalosporins, a monobactam (aztreonam), a beta-lactamase inhibitor (clavulanic acid), a carbapenem (meropenem) and the non-beta-lactam penicillin derivative d-penicillamine were tested for their effect on IFN-gamma activity.
Methods: Following exposure to a range of concentrations of these compounds, for varying lengths of time, IFN-gamma activity was assayed by induction of CD54 on the surface of the lung epithelial cell line A549, utilizing an ELISA.
Results: Clavulanic acid, cefoxitin and cefaloridine were the most potent inhibitors of IFN-gamma activity, followed by cefotaxime, ceftriaxone and phenoxymethylpenicillin. Ampicillin was less inhibitory than penicillin G, whilst meropenem and aztreonam had the least effect and d-penicillamine had no effect. The modulatory effect of these compounds was not due to a direct effect on CD54 induction. Unlike freshly prepared drugs, aged preparations of penicillin G and clavulanic acid had no significant effect on IFN-gamma activity.
Conclusions: beta-Lactams differ in their capacity to modulate human IFN-gamma activity. This finding may have implications for the immunomodulatory effects of beta-lactams and for the design both of beta-lactams that do not affect the immune system and those which may be used therapeutically to target cytokine action.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1093/jac/dki373 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Associations between the gut microbiome, inflammation and cardiovascular profiles in people with HIV.
J Infect Dis
January 2025
School of Medicine, University College Dublin, Belfield, Dublin 4, Ireland.
Background: Inflammation and innate immune activation are associated with chronic HIV infection, despite effective treatment. Although gut microbiota alterations are linked to systemic inflammation, the relationships between the gut microbiome, inflammation and HIV remain unclear.
Methods: The UPBEAT-CAD sub-study, examining cardiovascular disease (CVD) risk in HIV, enrolled participants matched on HIV status and traditional CVD risk factors.
Moracin M promotes hair regeneration through activation of the WNT/β-catenin pathway and angiogenesis.
Arch Dermatol Res
January 2025
Institute of Pharmaceutical Research and Development, College of Pharmacy, Wonkwang University, Iksan, Jeonbuk, 54538, South Korea.
Hair follicle growth depends on the intricate interaction of cells within the follicle and its vascular supply. Current FDA-approved treatments like minoxidil have limitations, including side effects and the need for continuous use. Moracin M, a compound from Moraceae family, was investigated for its effects on hair growth and vascular regeneration.
View Article and Find Full Text PDFImmunomodulatory activity of Trypanosoma cruzi recombinant antigen combination TSA-1-C4 and Tc24-C4 induce activation of macrophages and CD8 T cells.
Parasitol Res
January 2025
Facultad de Química, Universidad Autónoma de Yucatán (UADY), Calle 43 S/N entre calle 96 y calle 40 Colonia Inalámbrica, Mérida, Yucatán, C.P. 97069, Mexico.
Chagas disease is a chronic infection caused by the protozoan parasite, Trypanosoma cruzi, with limited benefits of the currently available anti-parasitic chemotherapeutic approaches to halt the progression of heart disease. Recombinant TSA-1-C4 and Tc24-C4 proteins have been developed as promising antigen candidates for therapeutic vaccines, leading to propose them in combination as a bivalent recombinant protein strategy. In this study, we evaluated the immunomodulatory effect of the combined TSA-1-C4 and Tc24-C4 recombinant proteins by in vitro assays using murine macrophages.
View Article and Find Full Text PDFInfluence of Bee Venom on Nociception and Inflammatory Cytokine Profiles in Experimental Hyperalgesia.
Toxins (Basel)
January 2025
Faculty of Sciences, University of Balamand, Al-Kourah, P.O. Box 100, Tripoli 1300, Lebanon.
Hyperalgesia is a condition marked by an abnormal increase in pain sensitivity, often occurring in response to tissue injury, inflammation, or prolonged exposure to certain medications. Inflammatory mediators, such as cytokines IL-1β, IL-6, and TNF-α, play a central role in this process, amplifying pain perception. Developing effective treatments that address the underlying mechanisms of hyperalgesia is an active field of research.
View Article and Find Full Text PDFIFN-γ/TNF-α Synergism Induces Pro-Inflammatory Cytokine and Chemokine Production by In Vitro Canine Keratinocytes.
Vet Sci
January 2025
Biosafety Research Institute and College of Veterinary Medicine, Jeonbuk National University, Iksan 54896, Republic of Korea.
Activated keratinocytes play a crucial role in skin inflammation through the production of multiple inflammatory mediators; however, little is known about cytokine secretion by activated keratinocytes in dogs. This study aimed to investigate the effects of the Th1 and Th2 types of cytokines on the production of keratinocyte-derived inflammatory mediators. Canine progenitor epidermal keratinocytes (CPEKs) were incubated with canine recombinant IL-4, IL-13, an IL4/IL13 mixture, IFN-γ, TNF-α, or an IFN-γ/TNF-α mixture for 24 h following 100% confluency.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!