IFNα Impairs Autophagic Degradation of mtDNA Promoting Autoreactivity of SLE Monocytes in a STING-Dependent Fashion

Publication date: 23 October 2018Source: Cell Reports, Volume 25, Issue 4Author(s): Katerina Gkirtzimanaki, Eleni Kabrani, Dimitra Nikoleri, Alexander Polyzos, Athanasios Blanas, Prodromos Sidiropoulos, Antonis Makrigiannakis, George Bertsias, Dimitrios T. Boumpas, Panayotis VerginisSummaryInterferon α (IFNα) is a prompt and efficient orchestrator of host defense against nucleic acids but upon chronicity becomes a potent mediator of autoimmunity. Sustained IFNα signaling is linked to pathogenesis of systemic lupus erythematosus (SLE), an incurable autoimmune disease characterized by aberrant self-DNA sensing that culminates in anti-DNA autoantibody-mediated pathology. IFNα instructs monocytes differentiation into autoinflammatory dendritic cells (DCs) than potentiates the survival and expansion of autoreactive lymphocytes, but the molecular mechanism bridging sterile IFNα-danger alarm with adaptive response against self-DNA remains elusive. Herein, we demonstrate IFNα-mediated deregulation of mitochondrial metabolism and impairment of autophagic degradation, leading to cytosolic accumulation of mtDNA that is sensed via stimulator of interferon genes (STING) to promote induction of autoinflammatory DCs. Identification of mtDNA as a cell-autonomous enhancer of IFNα signaling underlines the significance of efficient mitochondrial recycling in the maintenance of peripheral tolerance. Antioxidant treatment and metabolic rescue of auto...
Source: Cell Reports - Category: Cytology Source Type: research

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Source: Journal of Toxicology and Environmental Health Part A - Category: Environmental Health Authors: Source Type: research
CONCLUSIONS: Young adult IS patients in Korea exhibit low awareness and poor management of their risk factors. Although the short-term outcome was relatively favorable in those patients, having SLE was associated with unfavorable outcomes. More attention needs to be paid for improving awareness and controlling risk factors in this population. PMID: 33029967 [PubMed]
Source: Journal of Clinical Neurology - Category: Neurology Tags: J Clin Neurol Source Type: research
Publication date: Available online 10 October 2020Source: Journal of Ginseng ResearchAuthor(s): Soo Kyung Park, Sun Hee Hyun, Gyo In, Chae-Kyu Park, Yi-Seong Kwak, Young-Jin Jang, Bumseok Kim, Jong-Hoon Kim, Chang-Kyun Han
Source: Journal of Ginseng Research - Category: Complementary Medicine Source Type: research
CONCLUSIONS: As the present study was the first investigation on the coagulation status in patients with AA, elevated D-dimer levels in alopecia areata may suggest a deficient coagulation in these patients that may contribute to an increase in the risk of thrombosis. Further studies are needed to evaluate this hypothesis using a larger sample size. PMID: 33034439 [PubMed - as supplied by publisher]
Source: Giornale Italiano di Dermatologia e Venereologia - Category: Dermatology Tags: G Ital Dermatol Venereol Source Type: research
Authors: Li H, Zhang J, Chen Y PMID: 33034436 [PubMed - as supplied by publisher]
Source: Giornale Italiano di Dermatologia e Venereologia - Category: Dermatology Tags: G Ital Dermatol Venereol Source Type: research
Conclusion: The compositions of CSF were unchanged after steam-processing, while the relative contents of their components were changed. These changes may be the major reasons for the differentiation of their efficacies. In addition, CSF and SCSF could alleviate ethanol-induced gastric mucosal injury through the enhancement of antioxidant and anti-inflammatory activities. SCSF exhibited a better gastroprotective effect than CSF, which emphasized the necessity of steam processing. PMID: 33029176 [PubMed]
Source: Evidence-based Complementary and Alternative Medicine - Category: Complementary Medicine Tags: Evid Based Complement Alternat Med Source Type: research
Authors: Tvrdá E, Michalko J, Árvay J, Vukovic NL, Ivanišová E, Ďuračka M, Matušíková I, Kačániová M Abstract Schisandra chinensis is a woody vine native to China, Korea, and Russia, which has been used as a traditional herbal remedy to treat male infertility. As very little information is available concerning its effects on ejaculated spermatozoa, the aim of this study was to investigate the chemical, antioxidant, and antibacterial properties of the S. chinensis berry (Omija) extract followed by an assessment of its in vitro effects on bovine sperm ...
Source: Evidence-based Complementary and Alternative Medicine - Category: Complementary Medicine Tags: Evid Based Complement Alternat Med Source Type: research
In this study, we investigated the potential effects of pineapple vinegar as an antiobesity agent on a high-fat diet- (HFD-) induced C57BL/6 obese mice. C57BL/6 mice were treated with pineapple vinegar (1 mL/kg BW and 0.08 mL/kg BW) for 12 weeks after 24 weeks of HFD incubation. Serum biochemistry profiles, antioxidant assays, qPCR, proteome profiler, and 16S metagenomic were done posttreatment. Our data showed that a high concentration of pineapple vinegar (1 mL/kg BW) treatment significantly (p
Source: Evidence-based Complementary and Alternative Medicine - Category: Complementary Medicine Tags: Evid Based Complement Alternat Med Source Type: research
Publication date: December 2020Source: Journal of Functional Foods, Volume 75Author(s): Longmei Weng, Zuowei Xiao, Lin Li, Lili Ji, Pengyao Sun, Zhiyi Chen, Yi Liang, Bing Li, Xia Zhang
Source: Journal of Functional Foods - Category: Nutrition Source Type: research
In conclusion, a polypharmacology approach of combining established, prolongevity drug inhibitors of specific nodes may be the most effective way to target the nutrient-sensing network to improve late-life health. Deletion of p38α in Neurons Slows Neural Stem Cell Decline and Loss of Cognitive Function in Mice https://www.fightaging.org/archives/2019/10/deletion-of-p38%ce%b1-in-neurons-slows-neural-stem-cell-decline-and-loss-of-cognitive-function-in-mice/ Researchers here provide evidence for p38α to be involved in the regulation of diminished neural stem cell activity with age. It is thought...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
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