OBJECTIVE: By exposing mice carrying a deletion of NADPH oxidase isoform 4, NOX4, specifically in pancreatic β cells (βNOX4-/-) to nutrient excess stimulated by a high-fat diet (HFD), this study aimed to elucidate the role of β-cell redox status in the development of meta-inflammation within the diabetic phenotype. METHODS: The authors performed basic phenotyping of βNOX4-/- mice on HFD involving insulin and glycemic analyses, histochemistry of adipocytes, indirect calorimetry, and cytokine analyses. To characterize local inflammation, the study used caspase-1 activity assay, interleukin-1β immunochemistry, and real-time polymerase chain reaction during coculturing of β cells with macrophages. RESULTS: The phenotype of βNOX4-/- mice on HFD was not associated with hyperinsulinemia and hyperglycemia but showed accumulation of excessive lipids in epididymal fat and β cells. Surprisingly, mice showed significantly reduced systemic inflammation. Decreased interleukin-1β protein levels and downregulated NLRP3-inflammasome activity were observed on chronic glucose overload in βNOX4-/- isolated islets and NOX4-silenced INS1-E cells resulting in attenuated proinflammatory polarization of macrophages/monocytes in vitro and in situ and reduced local islet inflammation. CONCLUSIONS: Experimental evidence suggests that NOX4 pro-oxidant activity in β cells is involved in NLRP3-inflammasome activation during chronic nutrient overload and participates in local inflammatory signaling and perhaps toward peripheral tissues, contributing to a diabetic inflammatory phenotype.
- MeSH
- cytokiny * farmakologie imunologie klasifikace terapeutické užití MeSH
- erythropoetin analogy a deriváty farmakologie klasifikace terapeutické užití MeSH
- faktor stimulující kolonie granulocytů farmakologie imunologie klasifikace terapeutické užití MeSH
- interferony farmakologie imunologie klasifikace terapeutické užití MeSH
- interleukin-1 farmakologie imunologie terapeutické užití MeSH
- interleukin-2 farmakologie imunologie terapeutické užití MeSH
- receptory cytokinové imunologie klasifikace MeSH
- thrombopoetin agonisté farmakologie klasifikace terapeutické užití MeSH
- TNF-alfa farmakologie terapeutické užití MeSH
- Publikační typ
- přehledy MeSH
Chlamydia psittaci pneumonia (CPP) is a lung disease caused by the infection with the Chla-mydia psittaci bacterium, which can lead to severe acute respiratory distress syndrome and systemic symptoms. This study explored the specific mechanisms underlying the impact of reactive oxygen species (ROS) on the Th17/Treg balance in CPP. The levels of ROS and the differentiation ratio of Th17/Treg in the peripheral blood of healthy individuals and CPP patients were measured using ELISA and flow cytometry, respectively. The association between the ROS levels and Th17/Treg was assessed using Pearson correlation analysis. The ROS levels and the Th17/Treg ratio were measured in CD4+ T cells following H2O2 treatment and NLRP3 inhibition. The effects of H2O2 treatment and NLRP3 inhibition on the NLRP3/IL-1β/caspase-1 pathway were observed using immunoblotting. Compared to the healthy group, the CPP group exhibited increased levels of ROS in the peripheral blood, an elevated ratio of Th17 differentiation, and a decreased ratio of Treg differentiation. ROS levels were positively correlated with the Th17 cell proportion but negatively correlated with the Treg cell proportion. The ROS levels and NLRP3/IL-1β/caspase-1 expression were up-regulated in CD4+ T cells after H2O2 treatment. Furthermore, there was an increase in Th17 differentiation and a decrease in Treg differentiation. Conversely, the NLRP3/IL-1β/caspase-1 pathway inhibition reversed the effects of H2O2 treatment, with no significant change in the ROS levels. ROS regulates the Th17/Treg balance in CPP, possibly through the NLRP3/IL-1β/caspase-1 pathway. This study provides a new perspective on the development of immunotherapy for CPP.
- MeSH
- buněčná diferenciace * účinky léků MeSH
- buňky Th17 * imunologie metabolismus MeSH
- Chlamydophila psittaci * MeSH
- dospělí MeSH
- interleukin-1beta * metabolismus MeSH
- kaspasa 1 * metabolismus MeSH
- lidé středního věku MeSH
- lidé MeSH
- peroxid vodíku metabolismus MeSH
- protein NLRP3 * metabolismus MeSH
- psitakóza MeSH
- reaktivní formy kyslíku * metabolismus MeSH
- regulační T-lymfocyty * imunologie MeSH
- signální transdukce MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
Proinflammatory cytokines and their inhibitors are involved in the regulation of multiple immune reactions including response to transplanted organs. In this prospective study, we evaluated changes in serum concentrations of six IL-1 family cytokines (IL-1 alpha, IL-1 beta, IL-1RA, IL-18, IL-18BP, and IL-36 beta) in 138 kidney allograft recipients and 48 healthy donors. Samples were collected before transplantation and then after one week, three months and one year, additional sera were obtained at the day of biopsy positive for acute rejection. We have shown, that concentrations of proinflammatory members of the IL-1 family (IL-1β, IL-18, IL-36 β) and anti-inflammatory IL-18BP decreased immediately after the transplantation. The decline of serum IL-1RA and IL-1α was not observed in subjects with acute rejection. IL-18, including specifically its free form, is the only cytokine which increase serum concentrations in the period between one week and three months in both groups of patients without upregulation of its inhibitor, IL-18BP. Serum concentrations of calculated free IL-18 were upregulated in the acute rejection group at the time of acute rejection. We conclude that IL-1 family cytokines are involved mainly in early phases of the response to kidney allograft. Serum concentrations of free IL-18 and IL-18BP represent possible biomarkers of acute rejection, and targeting IL-18 might be of therapeutic value.
- MeSH
- alografty * MeSH
- biologické markery * krev MeSH
- dospělí MeSH
- homologní transplantace metody MeSH
- interleukin-1 krev MeSH
- interleukin-18 * krev MeSH
- lidé středního věku MeSH
- lidé MeSH
- mezibuněčné signální peptidy a proteiny krev MeSH
- prospektivní studie MeSH
- rejekce štěpu * imunologie krev MeSH
- transplantace ledvin * MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
To reveal the variation of gut microbiota and its association with immune function in cured patients with coronavirus 2019 (COVID-19) disease, gut microbiota of patients discharged from hospital for 20 ~ 23 months and healthy volunteers was analyzed by high throughput 16S rRNA sequencing. The diversity and abundance were compared, and the correlation with immunity factors was investigated, and changes in the content of 6 genera microorganisms with proportion higher than 0.1% were revealed in patients with COVID-19 disease: reduced content of Subdoligranulum, Haemophilus, Coprococcus, Eubacterium vertriosum group, and Lachnospiraceae ND3007 group and increased content of Hungatella. NK cells were negatively correlated to Subdoligranulum, while CD8 cells were positively correlated to Subdoligranulum but negative to Hungatella. IL-8 concentration was negatively correlated to Subdoligranulum, Haemophilus, Coprococcus, Eubacterium vertriosum group, and Lachnospiraceae ND3007 group but positively to Hungatella, while IL-1β concentration was negatively correlated to Haemophilus and Eubacterium ventriosum group but positively to Hungatella. The variation of probiotics and potential pathogenic bacteria implies a higher risk in diseases and inflammation, and the modulation of the gut microbiota may help the healing of COVID-19 patients.
- MeSH
- Bacteria klasifikace genetika izolace a purifikace MeSH
- buňky NK imunologie MeSH
- COVID-19 * imunologie mikrobiologie MeSH
- dospělí MeSH
- feces mikrobiologie virologie MeSH
- interleukin-1beta MeSH
- interleukin-8 MeSH
- lidé středního věku MeSH
- lidé MeSH
- RNA ribozomální 16S * genetika MeSH
- SARS-CoV-2 * imunologie MeSH
- senioři MeSH
- střevní mikroflóra * MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
BACKGROUND: Chronic venous disease (CVD) is a common disorder of lower extremities. OBJECTIVES: The study was scheduled to investigate the relationship between polymorphisms in major proinflammatory genes TNF α (-238 A/G; -308 A/G), TNF β (NcoI), IL-1β (+3953 T/C); IL-6 (-174 G/C; -596 G/C) and ADAM17 (3'TACE) and CVD risk. Genotype-phenotype study was calculated to test possible association between examined genotypes and phenotypes of CVD. METHODS: Finally, 150 CVD patients and 227 control subjects were enrolled to the study. Genotypes in proinflammatory gene polymorphisms were identified from isolated DNA by PCR method and restriction analysis. RESULTS: Significant differences in genotype distribution/allelic frequencies in TNF β gene, IL-1 β gene and in ADAM17 gene polymorphisms were found between CVD women and control ones. In the genotype-phenotype study, identified genotypes were associated with arterial hypertension (ADAM17, IL-6-men), ischaemic heart disease (TNF α and β genes), diabetes mellitus (ADAM17-women, TNF β-men), age of CVD onset (TNF α and IL-6), ulceration (ADAM17), duration of ulceration (ADAM17), ulceration recurrence (ADAM17-women), home care necessity (TNF α), varices surgery (TNF α), erysipelas development (ADAM17-men) and tumour development (TNF α). CONCLUSION: Studying of these polymorphisms associations can help us better identify patients at higher risk of developing severe CVD.
- MeSH
- chronická nemoc MeSH
- frekvence genu MeSH
- genetická predispozice k nemoci MeSH
- genotyp MeSH
- interleukin-1beta genetika MeSH
- interleukin-6 genetika MeSH
- jednonukleotidový polymorfismus MeSH
- kardiovaskulární nemoci * genetika MeSH
- lidé MeSH
- lymfotoxin-alfa genetika MeSH
- protein ADAM17 genetika MeSH
- TNF-alfa * genetika MeSH
- Check Tag
- lidé MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
Matrine is an active ingredient in traditional Chinese medicine that has been shown to be effective in treating bone disorders. The anti-osteoarthritis (OA) effects of matrine were assessed using both in in vitro and in vivo systems, and the mechanisms underlying the effects were investigated by focusing on the activity of miR-29b-3p/PGRN axis. The miR was chosen as potential target for matrine after chondrocytes were treated with both IL-1? and matrine. Changes in cell viability, cell apoptosis, inflammation, and miR-29b-3p/PGRN axis were detected. In vitro assays results were validated using collagen-induced arthritis (CIA) rat models. Incubation with IL-1? reduced cell viability, induced cell apoptosis, and inhibited production of cytokines in chondrocytes, which was associated with the up-regulation of miR-29b-3p and down-regulation of PGRN. In CIA rats, matrine reduced bone destruction and weight loss in a dose-dependent manner. Matrine also reduced the systemic levels of cytokines. At the molecular level, matrine inhibited the expression of miR-29b-3p while increasing the expression of PGRN. The findings outlined in the current study showed that matrine exerted its anti-OA effects by modulating the miR-29b-3p/PGRN axis.
- MeSH
- apoptóza MeSH
- cytokiny MeSH
- interleukin-1 farmakologie MeSH
- kolagen MeSH
- krysa rodu rattus MeSH
- matriny MeSH
- mikro RNA * metabolismus MeSH
- osteoartróza * farmakoterapie metabolismus MeSH
- Sophora flavescens MeSH
- zvířata MeSH
- Check Tag
- krysa rodu rattus MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
OBJECTIVES: IL-37 is an anti-inflammatory cytokine involved in inflammatory and autoimmune diseases. We aimed to investigate the association between IL-37 genetic variants, IL-37 plasma levels, and various clinical phases of gout. METHODS: The study included a control group with no history of primary hyperuricemia/gout, (n = 50), asymptomatic hyperuricemia (n = 74), intercritical gout (n = 200), acute gouty flare (n = 18), and chronic tophaceous gout (n = 30). Plasma IL-37 was analysed using enzyme-linked immunosorbent assay. All coding regions and intron-exon boundaries of IL-37 and exons 1-5 were amplified and sequenced. RESULTS: Plasma levels of IL-37 were significantly higher in asymptomatic hyperuricemic (p = 0.045), intercritical gout (p = 0.001), and chronic tophaceous gout (p = 0.021) cohorts when compared to control group. The levels of IL-37 in patients with acute gouty flare were comparable to control group (p = 0.061). We identified 15 genetic variants of IL-37: eight intron (rs2708959, rs2723170, rs2708958, rs2723169 rs2466448, rs3811045, rs3811048, rs2708944) and seven non-synonymous allelic variants (rs3811046, rs3811047, rs2708943, rs2723183, rs2723187, rs2708947, rs27231927), of which rs2708959 showed an over-presentation in gouty and acute flare cohorts (p = 0.003 and 0.033, respectively) compared to European population (minor allelic frequency MAF = 0.05) but not in control and hyperuricemic cohorts (p/MAF = 0.17/0.08 and 0.71/0.05, respectively).. On the contrary, rs3811045, rs3811046, rs3811047, and rs3811048 were underrepresented among individuals with tophaceous gout (MAF = 0.57) compared to European MAF 0.70-0.71, but not compared to the control cohort (MAF = 0.67). CONCLUSIONS: We demonstrated the up-regulation of IL-37 levels across the clinical phases of gout: asymptomatic hyperuricemia, intercritical, and chronic tophaceous gout compared to control. Moreover, 15 genetic variants of IL-37 were identified and their associations with the clinical variants of gout were evaluated.
- MeSH
- dna (nemoc) * epidemiologie MeSH
- dnavá artritida * MeSH
- hyperurikemie * genetika MeSH
- interleukin-1beta MeSH
- kyselina močová MeSH
- lidé MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
Sphingomyelinase D (SMase D), the main toxic component of Loxosceles venom, has a well-documented role on dermonecrotic lesion triggered by envenomation with these species; however, the intracellular mechanisms involved in this event are still poorly known. Through differential transcriptomics of human keratinocytes treated with L. laeta or L. intermedia SMases D, we identified 323 DEGs, common to both treatments, as well as upregulation of molecules involved in the IL-1 and ErbB signaling. Since these pathways are related to inflammation and wound healing, respectively, we investigated the relative expression of some molecules related to these pathways by RT-qPCR and observed different expression profiles over time. Although, after 24 h of treatment, both SMases D induced similar modulation of these pathways in keratinocytes, L. intermedia SMase D induced earlier modulation compared to L. laeta SMase D treatment. Positive expression correlations of the molecules involved in the IL-1 signaling were also observed after SMases D treatment, confirming their inflammatory action. In addition, we detected higher relative expression of the inhibitor of the ErbB signaling pathway, ERRFI1, and positive correlations between this molecule and pro-inflammatory mediators after SMases D treatment. Thus, herein, we describe the cell pathways related to the exacerbation of inflammation and to the failure of the wound healing, highlighting the contribution of the IL-1 signaling pathway and the ERRFI1 for the development of cutaneous loxoscelism.
- MeSH
- erbB receptory metabolismus MeSH
- fosfodiesterasy toxicita MeSH
- interleukin-1 metabolismus MeSH
- kousnutí pavoukem patologie MeSH
- lidé MeSH
- pavoučí jedy * toxicita MeSH
- pavouci chemie metabolismus MeSH
- sfingomyelinfosfodiesterasa * metabolismus MeSH
- signální transdukce MeSH
- zánět MeSH
- zvířata MeSH
- Check Tag
- lidé MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
Autoinflamatorní onemocnění (AID) zahrnují pestrou skupinu chorob definovaných porušenou regulací vrozeného imunitního systému. Rychlost rozvoje této oblasti umožňují především citlivější metody genetického vyšetření. Klinickým projevem sterilního zánětu bývá epizodická horečka v doprovodu různého orgánového postižení. Detailnější pochopení etiopatogenetického pozadí AID otevírá nové perspektivy cílené terapii. Cílem léčby je kontrola aktivity onemocnění a prevence poškození orgánů. Péče o pacienty s AID by měla být vedena multidisciplinárním týmem v rámci centra vysoce specializované péče. Nejdéle známou skupinou AID jsou syndromy periodické horečky, kam řadíme familiární středomořskou horečku (FMF), deficit mevalonátkinázy (MKD), periodický syndrom asociovaný s receptorem pro tumor nekrotizující faktor (TRAPS), periodické horečky asociované s kryopyrinem (CAPS) a periodickou horečku s afty, faryngitidou a krční adenitidou (PFAPA ). Článek poskytuje základní obecné informace o skupině autoinflamatorních nemocí a nejčastějších typech periodických horeček.
Autoinflammatory diseases (AID) include a diverse group of diseases defined by dysregulation of the innate immune system. Clinical manifestations of sterile inflammation include usually episodic fever with variable presence of organ involvement. A more detailed understanding of the etiopathogenetic background of AID opens new perspectives for targeted therapies. Disease activity control and prevention of organ damage are the main treatment goals. Multidisciplinary management of AID should be concentrated in specialised centers. The best known group of AIDs,periodic fever syndromes,include Familial Mediterranean fever (FMF), Mevalonate kinase deficiency (MKD), Tumor necrosis factor receptor-associated periodic syndrome (TRAPS), Cryopyrin-associated periodic syndromes (CAPS) and Periodic fever with aphthae, pharyngitis and cervical adenitis (PFAPA ). The article provides general information about the group of autoinflammatory diseases and the most common types of periodic fevers.
- Klíčová slova
- autoinflamatorní nemoci,
- MeSH
- autoimunitní nemoci * diagnóza patofyziologie terapie MeSH
- dědičné zánětlivé autoimunitní nemoci diagnóza patofyziologie terapie MeSH
- familiární středomořská horečka diagnóza patofyziologie terapie MeSH
- horečka MeSH
- interleukin-1 MeSH
- lidé MeSH
- vysoce účinné nukleotidové sekvenování MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- přehledy MeSH
