Inflammatory processes within the peripheral nervous system (PNS) are associated with symptoms of hyperalgesia and allodynia. Pro-inflammatory mediators, such as cytokines or prostaglandins, modulate the excitability of nociceptive neurons, called peripheral sensitization. Here, we aimed to examine if previously reported effects of in vitro stimulation with lipopolysaccharide (LPS) on primary cell cultures of dorsal root ganglia (DRG) reflect changes in a model of LPS-induced systemic inflammation in vivo. Male rats were intraperitoneally injected with LPS (100 µg/kg) or saline. Effects of systemic inflammation on expression of inflammatory mediators, neuronal Ca responses, and activation of inflammatory transcription factors in DRG were assessed. Systemic inflammation was accompanied by an enhanced expression of pro-inflammatory cytokines and cyclooxygenase-2 in lumbar DRG. In DRG primary cultures obtained from LPS-treated rats enhanced neuronal capsaicin-responses were detectable. Moreover, we found an increased activation of inflammatory transcription factors in cultured macrophages and neurons after an in vivo LPS challenge compared to saline controls. Overall, our study emphasizes the role of inflammatory processes in the PNS that may be involved in sickness-behavior-associated hyperalgesia induced by systemic LPS treatment. Moreover, we present DRG primary cultures as tools to study inflammatory processes on a cellular level, not only in vitro but also ex vivo.
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http://dx.doi.org/10.3390/ijms232113124 | DOI Listing |
BMC Public Health
January 2025
Department of Clinic Nutrition, Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China.
Background: Since diet is a known modulator of inflammation, the Dietary Inflammatory Index (DII), which quantifies the inflammatory potential of an individual's diet, becomes a significant parameter to consider. Chronic diarrhea is commonly linked to inflammatory processes within the gut. Thus, this study aimed to explore the potential link between DII and chronic diarrhea.
View Article and Find Full Text PDFNat Rev Neurol
January 2025
Sleep Research Centre, Oasi Research Institute - IRCCS, Troina, Italy.
Sleep is essential for brain development and overall health, particularly in children with neurodevelopmental disorders (NDDs). Sleep disruptions can considerably impact brain structure and function, leading to dysfunction of neurotransmitter systems, metabolism, hormonal balance and inflammatory processes, potentially contributing to the pathophysiology of NDDs. This Review examines the prevalence, types and mechanisms of sleep disturbances in children with NDDs, including autism spectrum disorder, attention-deficit hyperactivity disorder and various genetic syndromes.
View Article and Find Full Text PDFCurr Mol Med
January 2025
Shanxi Key Laboratory of Stem Cells for Immunological Dermatosis, Institute of Dermatology, Department of Dermatology, Taiyuan Central Hospital of Shanxi Medical University, Taiyuan, Shanxi, China.
Purpose: This study aims to investigate the unique proteins in exosomes from mesenchymal stem cells derived from psoriatic lesions and compare them with those from healthy human skin. It seeks to identify potential regulatory factors that may influence the differential effects observed in these exosomes.
Methods: Dermal mesenchymal stem cell exosomes were isolated from healthy human skin (HDMSCs-EXO) and psoriatic lesion of patient (PDMSCs-EXO).
J Cell Mol Med
January 2025
Academy of Traditional Chinese Medicine, Henan University of Chinese Medicine, Zhengzhou, China.
Osteoporosis, recognised as a metabolic disorder, has emerged as a significant burden on global health. Although available treatments have made considerable advancements, they remain inadequately addressed. In recent years, the role of epigenetic mechanisms in skeletal disorders has garnered substantial attention, particularly concerning mA RNA modification.
View Article and Find Full Text PDFCarbohydr Polym
March 2025
College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China; Integrated Scientific Research Base of Edible Fungi Processing and Comprehensive Utilization Technology, Ministry of Agriculture and Rural Affairs, Fuzhou, Fujian 350002, China. Electronic address:
Dictyophora indusiata is an edible fungus, which is known as bamboo fungus. D. indusiata polysaccharide is considered as the most important bioactive component.
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