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MicroRNA AND sepsis

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https://www.readbyqxmd.com/read/29245971/systematic-analysis-of-the-expression-profile-of-non-coding-rnas-involved-in-ischemia-reperfusion-induced-acute-kidney-injury-in-mice-using-rna-sequencing
#1
Jun Zhou, Hongtao Chen, Youling Fan
Acute kidney injury (AKI) is a common and serious disease characterized by a rapid decline in renal function and has an unacceptably high mortality rate with no effective treatment beyond supportive care. AKI can be induced by many factors such as ischemia/reperfusion (IR), sepsis, and drug-induced nephrotoxicity. However, the molecular mechanisms of AKI are poorly understood. A non-coding RNA (ncRNA) is a RNA molecule that is not translated into a protein. NcRNAs play multiple roles in cellular processes, and mutations or imbalances of these molecules within the body can cause a variety of diseases...
November 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/29237456/identification-of-potential-transcriptomic-markers-in-developing-pediatric-sepsis-a-weighted-gene-co-expression-network-analysis-and-a-case-control-validation-study
#2
Yiping Li, Yanhong Li, Zhenjiang Bai, Jian Pan, Jian Wang, Fang Fang
BACKGROUND: Sepsis represents a complex disease with the dysregulated inflammatory response and high mortality rate. The goal of this study was to identify potential transcriptomic markers in developing pediatric sepsis by a co-expression module analysis of the transcriptomic dataset. METHODS: Using the R software and Bioconductor packages, we performed a weighted gene co-expression network analysis to identify co-expression modules significantly associated with pediatric sepsis...
December 13, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29207683/non-coding-rna-a-potential-biomarker-and-therapeutic-target-for-sepsis
#3
REVIEW
Tie-Ning Zhang, Da Li, Jing Xia, Qi-Jun Wu, Ri Wen, Ni Yang, Chun-Feng Liu
Sepsis, a syndrome of physiologic, pathologic, and biochemical abnormalities caused by an altered systemic host response to infection, has become the main cause of death among patients admitted to the intensive care units. Recently, genome-wide expression analysis revealed that over 80% of the essential genetic elements were altered in critically ill patients. Notably, non-coding RNAs, including microRNAs, long non-coding RNAs and circular RNAs, have been proven to play essential roles in innate immunity, mitochondrial dysfunction and organ dysfunction...
October 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/29161706/endotoxin-effects-on-cardiac-and-renal-functions-and-cardiorenal-syndromes
#4
Grazia Maria Virzì, Anna Clementi, Alessandra Brocca, Claudio Ronco
Gram-negative sepsis is a major cause of morbidity and mortality in critical ill patients. Recent findings in molecular biology and in signaling pathways have enhanced our understanding of its pathogenesis and opened up opportunities of innovative therapeutic approaches. Endotoxin plays a pivotal role in the pathogenesis of multi-organ dysfunction in the setting of gram-negative sepsis. Indeed, heart and kidney impairments seem to be induced by the release of circulating pro-inflammatory and pro-apoptotic mediators triggered by endotoxin interaction with immune cells...
November 22, 2017: Blood Purification
https://www.readbyqxmd.com/read/29156532/paclitaxel-alleviated-liver-injury-of-septic-mice-by-alleviating-inflammatory-response-via-microrna-27a-tab3-nf-%C3%AE%C2%BAb-signaling-pathway
#5
Qiu Yang, Dongshan Zhang, Ya Li, Yongquan Li, Yinpeng Li
Excessive inflammatory response and apoptosis play an important role in the sepsis-induced liver injury. Paclitaxel, a diterpene alkaloid of Taxus brevifolia, is widely used as an anti-tumor drug and shows protective effects on acute lung and kidney injury. However, whether it has a protective effect against sepsis-induced liver injury has not been reported. The objective of this study was to investigate the protective effects of paclitaxel in septic liver injury in mice and associated molecular mechanisms...
November 15, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29123608/the-effects-of-microrna-34a-regulating-notch-1-nf-%C3%AE%C2%BAb-signaling-pathway-on-lipopolysaccharide-induced-human-umbilical-vein-endothelial-cells
#6
Yun Ge, Man Huang, Yue-Feng Ma
BACKGROUND: Notch-1/NF-κB signaling plays a key role in the cecal ligation and puncture (CLP)-induced sepsis. This study aims to investigate the intervention effects of microRNA-34a (miR-34a) lentivirus regulating Notch-1/NF-κB signaling pathway on lipopolysaccharide (LPS)-induced human umbilical vein endothelial cells (HUVEC). METHODS: HUVEC were divided into four groups as the following: they were infected with negative control lentivirus (NC group) or miR-34a lentivirus (OE group); LPS (1 μg/mL) was added on the third day on the basis of NC group and OE group for 24 hours (NC+LPS group or OE+LPS group)...
2017: World Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28947753/tnf-%C3%AE-mrna-is-negatively-regulated-by-microrna-181a-5p-in-maturation-of-dendritic-cells-induced-by-high-mobility-group-box-1-protein
#7
Jing Zhu, Fu-Li Wang, Hai-Bin Wang, Ning Dong, Xiao-Mei Zhu, Yao Wu, Yong-Tao Wang, Yong-Ming Yao
Dendritic cell (DC) can be stimulated by both exogenous pathogen-associated molecular patterns (PAMPs) such as lipopolysaccharide (LPS) and endogenous damage-associated molecular patterns (DAMPs) such as high mobility group box-1 protein (HMGB1). MicroRNAs (miRNAs) act as post-transcriptional fine tuners of mRNA. Studies have focused mostly on the potential role of miRNAs in DCs maturation triggered by PAMPs, especially LPS, however, little is known about the regulatory mechanism underlying the effects of miRNAs in DC maturation mediated by DAMPs, including HMGB1...
September 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28934717/expression-of-c-ebp%C3%AE-in-myeloid-progenitors-during-sepsis-promotes-immunosuppression
#8
Jun Dai, Ajinkya Kumbhare, Dima Youssef, Zhi Q Yao, Charles E McCall, Mohamed El Gazzar
Sepsis-induced myeloid-derived suppressor cells (MDSCs) contribute to immunosuppression associated with sepsis. We reported that the CCAAT enhancer-binding protein C/EBPβ activates microRNA (miR)-21 and miR-181b expressions, which induce transcription factor NFI-A to support the generation and expansion of MDSCs in the bone marrow and spleens of septic mice. Here, using a conditional knockout mouse model lacking C/EBPβ in the myeloid lineage, we find that without C/EBPβ, myeloid progenitor cells could not express miR-21 or miR-181b, and ectopic expression of C/EBPβ in the C/EBPβ-deficient myeloid progenitors activated the expression of the two miRNAs...
November 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28901393/lps%C3%A2-induced-downregulation-of-microrna%C3%A2-204-211-upregulates-and-stabilizes-angiopoietin%C3%A2-1-mrna-in-ea-hy926-endothelial-cells
#9
Yijun Zhang, Caixia Gan, Jiangbo Zhang, Dong Chen
Angiopoietin‑1 (ANG‑1), a ligand of the endothelial cell‑specific TIE2 surface receptor, acts in a complementary and coordinated manner with vascular endothelial growth factor during the process of angiogenesis. ANG‑1 can be used as a clinically informative biomarker of disease severity and outcome in severe sepsis. The epithelium‑specific Ets transcription factor 1 can activate ANG‑1 transcription in the setting of inflammation; however, relatively little is known about the regulation of ANG‑1 by microRNAs (miRs)...
November 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28856588/whole-blood-microrna-markers-are-associated-with-acute-respiratory-distress-syndrome
#10
Zhaozhong Zhu, Liming Liang, Ruyang Zhang, Yongyue Wei, Li Su, Paula Tejera, Yichen Guo, Zhaoxi Wang, Quan Lu, Andrea A Baccarelli, Xi Zhu, Ednan K Bajwa, B Taylor Thompson, Guo-Ping Shi, David C Christiani
BACKGROUND: MicroRNAs (miRNAs) can play important roles in inflammation and infection, which are common manifestations of acute respiratory distress syndrome (ARDS). We assessed if whole blood miRNAs were potential diagnostic biomarkers for human ARDS. METHODS: This nested case-control study (N = 530) examined a cohort of ARDS patients and critically ill at-risk controls. Whole blood miRNA profiles and logistic regression analyses identified miRNAs correlated with ARDS...
August 30, 2017: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/28841455/cardiovascular-dysfunction-in-sepsis-at-the-dawn-of-emerging-mediators
#11
REVIEW
Consolato Sergi, Fan Shen, David W Lim, Weiyong Liu, Mingyong Zhang, Brian Chiu, Vijay Anand, Ziyong Sun
Subcellular dysfunction and impaired metabolism derived from the complex interaction of cytokines and mediators with cellular involvement are on the basis of the cardiovascular response to sepsis. The lethal consequences of an infection are intimately related to its ability to spread to other organ sites and the immune system of the host. About one century ago, William Osler (1849-1919), a Canadian physician, remarkably defined the sequelae of the host response in sepsis: "except on few occasions, the patient appears to die from the body's response to infection rather than from it...
November 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28820886/circulating-mirnas-in-sepsis-a-network-under-attack-an-in-silico-prediction-of-the-potential-existence-of-mirna-sponges-in-sepsis
#12
Catalin Vasilescu, Mihnea Dragomir, Mihai Tanase, Dana Giza, Raluca Purnichescu-Purtan, Meng Chen, Sai-Ching Jim Yeung, George A Calin
Biomarkers based on the molecular mechanism of sepsis are important for timely diagnosis and treatment. A large panel of small non-coding microRNAs was reported to modulate the immune response in sepsis but have not been tested in clinical practice. Large-scale identification of microRNA networks in sepsis might reveal a new biological mechanism that can be also targeted by gene therapy. Therefore, the main objective of this study is to perform a comparison of the miRNA network between septic patients and healthy controls...
2017: PloS One
https://www.readbyqxmd.com/read/28759810/mir-130b-attenuates-vascular-inflammation-via-negatively-regulating-tumor-progression-locus-2-tpl2-expression
#13
Peng Wang, Xue Zhang, Fulun Li, Kai Yuan, Maoran Li, Jiwei Zhang, Bin Li, Wei Liang
Endothelial cell (EC) activation and dysfunction have been linked to a wide variety of vascular inflammatory diseases. However, the role of microRNAs in EC activation and inflammation remains largely unknown. In this study, we found that miR-130b was significantly decreased in human umbilical vein endothelial cells (HUVECs) after lipopolysaccharides (LPS) treatment. Forced expression of miR-130b inhibited the LPS-induced activation of extracellular signal-regulated kinase (ERK) and the inflammatory genes expression, such as interleukin (IL)-6 and tumor necrosis factor alpha (TNF-α)...
July 28, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28673002/igf-1-may-predict-the-severity-and-outcome-of-patients-with-sepsis-and-be-associated-with-microrna-1-level-changes
#14
Liang Xu, Weijun Zhang, Renhua Sun, Jingquan Liu, Jun Hong, Qian Li, Bangchuan Hu, Fangxiao Gong
IGF-1 functions as an anti-oxidative stress molecule and some critical patients with sepsis have a lower level of serum IGF-1. However, the association between IGF-1 and the severity or prognosis of sepsis remains unclear. This study aimed to elucidate the relationship between serum IGF-1 levels and the severity and prognosis of sepsis, and the possible mechanism was analyzed. Clinical characteristics of patients with sepsis were recorded and analyzed. Serum IGF-1 levels and micro (mi)RNA-1 levels were tested using radioimmunoassay and reverse transcription-quantitative polymerase chain reaction (RT-qPCR) analysis, respectively...
July 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28662100/mir-146a-mir-146b-and-mir-155-increase-expression-of-il-6-and-il-8-and-support-hsp10-in-an-in-vitro-sepsis-model
#15
COMPARATIVE STUDY
Dagmar Pfeiffer, Eva Roßmanith, Ingrid Lang, Dieter Falkenhagen
microRNAs (miRNAs) play an essential role in inflammation processes including sepsis. This study aimed to identify miRNAs as candidates for therapies that are involved in the innate immune response and to assess their potential functions in the activation of the endothelium. We stimulated THP-1 monocytes with 10 ng/ml LPS for 4 h and used the supernatant for the stimulation of human umbilical vein endothelial cells (HUVEC) or human pulmonary microvascular endothelial cells (HPMEC) for 16 h. miRNA array analysis (of 1,891 miRNAs) identified a 1...
2017: PloS One
https://www.readbyqxmd.com/read/28655995/microrna-142-3p-and-let-7g-negatively-regulates-augmented-il-6-production-in-neonatal-polymorphonuclear-leukocytes
#16
Hsin-Chun Huang, Hong-Ren Yu, Te-Yao Hsu, I-Lun Chen, Hui-Chen Huang, Jen-Chieh Chang, Kuender D Yang
Neonatal PMN are qualitatively impaired in functions, yet they frequently reveal augmented inflammatory reactions during sepsis. Here, we hypothesized that PMN from newborns produce more IL-6 than those from adults under LPS stimulation, in which transcriptional or posttranscriptional regulation is involved in the altered expression. We found that neonatal PMN produced significantly higher IL-6 mRNA and protein than adult PMN. The higher IL-6 expression was not related to transcriptional but posttranscriptional regulation as the IL-6 expression was affected by the addition of cycloheximide but not actinomycin...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/28622229/shields-up-systemic-protection-provided-by-microrna-21-during-sepsis
#17
Cliona Ni Cheallaigh, Frederick J Sheedy
No abstract text is available yet for this article.
July 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28552958/characterization-of-basal-and-lipopolysaccharide-induced-microrna-expression-in-equine-peripheral-blood-mononuclear-cells-using-next-generation-sequencing
#18
Nicholas J Parkinson, Virginia A Buechner-Maxwell, Sharon G Witonsky, R Scott Pleasant, Stephen R Werre, S Ansar Ahmed
The innate immune response to lipopolysaccharide contributes substantially to the morbidity and mortality of gram-negative sepsis. Horses and humans share an exquisite sensitivity to lipopolysaccharide and thus the horse may provide valuable comparative insights into this aspect of the inflammatory response. MicroRNAs, small non-coding RNA molecules acting as post-transcriptional regulators of gene expression, have key roles in toll-like receptor signaling regulation but have not been studied in this context in horses...
2017: PloS One
https://www.readbyqxmd.com/read/28525390/microrna-155-attenuates-late-sepsis-induced-cardiac-dysfunction-through-jnk-and-%C3%AE-arrestin-2
#19
Yu Zhou, Yan Song, Zahir Shaikh, Hui Li, Haiju Zhang, Yi Caudle, Shouhua Zheng, Hui Yan, Dan Hu, Charles Stuart, Deling Yin
Cardiac dysfunction is correlated with detrimental prognosis of sepsis and contributes to a high risk of mortality. After an initial hyperinflammatory reaction, most patients enter a protracted state of immunosuppression (late sepsis) that alters both innate and adaptive immunity. The changes of cardiac function in late sepsis are not yet known. MicroRNA-155 (miR-155) is previously found to play important roles in both regulations of immune activation and cardiac function. In this study, C57BL/6 mice were operated to develop into early and late sepsis phases, and miR-155 mimic was injected through the tail vein 48 h after cecal ligation and puncture (CLP)...
July 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28515178/a-model-specific-role-of-microrna-223-as-a-mediator-of-kidney-injury-during-experimental-sepsis
#20
James F Colbert, Joshay A Ford, Sarah M Haeger, Yimu Yang, Kyrie L Dailey, Kristen C Allison, Viola Neudecker, Christopher M Evans, Vanessa L Richardson, Kelley S Brodsky, Sarah Faubel, Holger K Eltzschig, Eric P Schmidt, Adit A Ginde
Sepsis outcomes are heavily dependent on the development of septic organ injury, but no interventions exist to interrupt or reverse this process. microRNA-223 (miR-223) is known to be involved in both inflammatory gene regulation and host-pathogen interactions key to the pathogenesis of sepsis. The goal of this study was to determine the role of miR-223 as a mediator of septic kidney injury. Using miR-223 knockout mice and multiple models of experimental sepsis, we found that miR-223 differentially influences acute kidney injury (AKI) based on the model used...
August 1, 2017: American Journal of Physiology. Renal Physiology
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