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PET Imaging of Sphingosine-1-Phosphate Receptor 1 with [F]TZ4877 in Nonhuman Primates.
Mol Imaging Biol
January 2025
Yale PET Center, Yale School of Medicine, New Haven, USA.
Purpose: The sphingosine-1-phosphate receptor-1 (S1PR) is involved in regulating responses to neuroimmune stimuli. There is a need for S1PR-specific radioligands with clinically suitable brain pharmcokinetic properties to complement existing radiotracers. This work evaluated a promising S1PR radiotracer, [F]TZ4877, in nonhuman primates.
View Article and Find Full Text PDFSepsis-induced NET formation requires MYD88 but is independent of GSDMD and PAD4.
FASEB J
January 2025
Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Neutrophils are peripheral blood-circulating leukocytes that play a pivotal role in host defense against bacterial pathogens which upon activation, they release web-like chromatin structures called neutrophil extracellular traps (NETs). Here, we analyzed and compared the importance of myeloid differentiation factor 88 (MYD88), peptidyl arginine deiminase 4 (PAD4), and gasdermin D (GSDMD) for NET formation in vivo following sepsis and neutrophilia challenge. Injection of lipopolysaccharide (LPS)/E.
View Article and Find Full Text PDFUltra-small quercetin-based nanotherapeutics ameliorate acute liver failure by combatting inflammation/cellular senescence cycle.
Theranostics
January 2025
Department of Infectious Diseases, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China.
Acute liver failure (ALF) is marked by a substantial generation of reactive oxygen species (ROS), which can induce both cellular senescence and a pronounced inflammatory response. Senescent cells secrete factors collectively termed the senescence-associated secretory phenotype (SASP), which exacerbate inflammation, while inflammation can reciprocally promote cellular senescence. Quercetin (Que), recognized for its ROS-scavenging capabilities, holds the potential for anti-inflammatory and anti-senescent effects.
View Article and Find Full Text PDFPerformance of three diagnostic tests for tuberculosis among Human Immunodeficiency Virus (HIV) patients presenting to a health facility in an informal urban settlement in Nairobi, Kenya.
PLoS One
January 2025
Faculty of Health Sciences, Department of Public and Global Health, University of Nairobi, Nairobi, Kenya.
The absence of an accurate reference test complicates the evaluation of tuberculosis (TB) diagnostic tests among people living with Human Immunodeficiency Virus (PLWHIV). The objective of this study was to estimate (using Bayesian latent class models [BLCM]) the sensitivity (Se), specificity (Sp) and negative and positive predictive values (NPV and PPV) of sputum smear microscopy (SSM), Xpert Ultra and lipoarabinomannan antigen (LAM) tests for TB among PLWHIV in Nairobi, Kenya. This cross-sectional study enrolled a total of 190 patients aged ≥ 18 years with presumptive TB seeking treatment at the Kibra Community Health Center Comprehensive Care Centre (CCC) clinic between September 2022 and March 2023.
View Article and Find Full Text PDFRegulates the Immune Response and Gut Microbiota in Mice.
Nutrients
December 2024
Department of Health and Sports Science, Kawasaki University of Medical Welfare, Kurashiki 701-0193, Japan.
Background: Cactus contains dietary fiber and minerals and is expected to have preventive effects against diabetes, arteriosclerosis, and other diseases. Additionally, cactus intake induces the production of short-chain fatty acids derived from the gut microbiota, which might influence immune functions. In this study, we examined the effects of a cactus (: NC)-supplemented diet on lipopolysaccharide (LPS)-induced immune responses and intestinal barrier function.
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