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Background: Chronic infections by pathogenic microorganisms play a significant role in cancer development, disrupting the body's immune system and microenvironment. This interference impairs the body's ability to eliminate these microorganisms promptly, allowing them to persist by evading immune defenses.
Aims: This study aimed to explore how chronic pathogenic infections influence the immune microenvironment, impacting tumorigenesis, cancer progression, and treatment strategies. Additionally, it seeks to investigate the effects of these infections on specific immune checkpoints and identify potential targets for immunotherapy.
Methods: We conducted searches, readings, and detailed analyses of key terms in databases like PubMed and Web of Science to evaluate the impact of chronic infections by pathogenic microorganisms on the immune microenvironment.
Results: Our analysis demonstrates a significant association between persistent chronic infections by pathogenic microorganisms and tumorigenesis. Notable impacts on the immune microenvironment include changes in immune cell function and the regulation of immune checkpoints, offering insights into potential targets for cancer immunotherapy.
Discussion: This study highlights the complex relationship between chronic infections and cancer development, presenting new opportunities for cancer immunotherapy by understanding their effects on the immune microenvironment. The influence of these infections on immune checkpoints emphasizes the crucial role of the immune system in cancer treatment.
Conclusion: Chronic infections by pathogenic microorganisms greatly affect the immune microenvironment, tumorigenesis, and cancer treatment. Unraveling the underlying mechanisms can unveil potential targets for immunotherapy, improving our comprehension of the immune response to cancer and potentially leading to more effective cancer treatments in the future.
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http://dx.doi.org/10.1002/cam4.70154 | DOI Listing |
PLoS One
September 2025
Department Chemicals and Product Safety, German Federal Institute for Risk Assessment (BfR), Berlin, Germany.
Tattoos and permanent make-up (PMU) gain increasing popularity among the general population. There are indications that pigments or their fragments may translocate within the body, however knowledge about possible systemic adverse effects related to tattoos is very limited. We investigated the prevalence of systemic chronic health effects including cardiovascular diseases, cancer and liver toxicity and their relationship with the presence and characteristics of tattoos and PMU as part of the LIFE-Adult-study, a population-based cohort study.
View Article and Find Full Text PDFJAAPA
September 2025
Clay W. Walker is an assistant professor of family medicine at Mayo Clinic in Phoenix, AZ; director of didactic education and an assistant professor in the PA program at A.T. Still University in Mesa, AZ; and an adjunct assistant professor at Rush University in Chicago, IL. Thomas Hartman is directo
Hemoptysis, defined as the expectoration of blood originating from the lower respiratory tract, is a clinical symptom with a wide differential diagnosis that ranges from benign to life-threatening causes. Common causes vary by geographic region and care setting, with respiratory infections, malignancy, bronchiectasis, and chronic obstructive pulmonary disease being predominant in resource-rich countries and tuberculosis remaining the leading cause in resource-limited areas. Though most cases are mild and self-limited, hemoptysis can be a life-threatening medical emergency; these cases are associated with a mortality exceeding 50%, primarily due to asphyxia.
View Article and Find Full Text PDFJ Clin Invest
September 2025
The University of Texas at Austin, Austin, United States of America.
Background: Following SARS-CoV-2 infection, ~10-35% of COVID-19 patients experience long COVID (LC), in which debilitating symptoms persist for at least three months. Elucidating biologic underpinnings of LC could identify therapeutic opportunities.
Methods: We utilized machine learning methods on biologic analytes provided over 12-months after hospital discharge from >500 COVID-19 patients in the IMPACC cohort to identify a multi-omics "recovery factor", trained on patient-reported physical function survey scores.
J Exp Med
November 2025
Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA.
Host-pathogen interactions involve two critical strategies: resistance, whereby hosts clear invading microbes, and tolerance, whereby hosts carry high pathogen burden asymptomatically. Here, we investigate mechanisms by which Salmonella-superspreader (SSP) hosts maintain an asymptomatic state during chronic infection. We found that regulatory T cells (Tregs) are essential for this disease-tolerant state, limiting intestinal immunopathology and enabling SSP hosts to thrive, while facilitating Salmonella transmission.
View Article and Find Full Text PDFPersistent high-risk human papillomavirus (hHPV) infection, especially HPV-16, plays a central role in the development of high-grade squamous intraepithelial lesions (HSIL). This study aimed to evaluate the performance of co-testing (cytology and hHPV detection) in a real-world cohort of men who have sex with men (MSM) and transgender women (TW) living with HIV. We conducted a prospective study (2017-2023) at a tertiary care center in Spain.
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