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Immune dysregulation

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https://www.readbyqxmd.com/read/29785960/reduction-in-regulatory-t-cells-in-early-pregnancy-causes-uterine-artery-dysfunction-in-mice
#1
Alison S Care, Stephane L Bourque, Jude S Morton, Emma P Hjartarson, Sarah A Robertson, Sandra T Davidge
Preeclampsia, fetal growth restriction, and miscarriage remain important causes of maternal and perinatal morbidity and mortality. These complications are associated with reduced numbers of a specialized T lymphocyte subset called regulatory T cells (Treg cells) in the maternal circulation, decidua, and placenta. Treg cells suppress inflammation and prevent maternal immunity toward the fetus, which expresses foreign paternal alloantigens. Treg cells are demonstrated to contribute to vascular homeostasis, but whether Treg cells influence the vascular adaptations essential for a healthy pregnancy is unknown...
May 21, 2018: Hypertension
https://www.readbyqxmd.com/read/29784788/mistimed-food-intake-and-sleep-alters-24-hour-time-of-day-patterns-of-the-human-plasma-proteome
#2
Christopher M Depner, Edward L Melanson, Andrew W McHill, Kenneth P Wright
Proteomics holds great promise for understanding human physiology, developing health biomarkers, and precision medicine. However, how much the plasma proteome varies with time of day and is regulated by the master circadian suprachiasmatic nucleus brain clock, assessed here by the melatonin rhythm, is largely unknown. Here, we assessed 24-h time-of-day patterns of human plasma proteins in six healthy men during daytime food intake and nighttime sleep in phase with the endogenous circadian clock (i.e., circadian alignment) versus daytime sleep and nighttime food intake out of phase with the endogenous circadian clock (i...
May 21, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29784649/small-molecular-inhibitors-targeting-protein-sumoylation-as-novel-anticancer-compounds
#3
Yanfang Yang, Zijing Xia, Xixi Wang, Xinyu Zhao, Zenghua Sheng, Yang Ye, Gu He, Liangxue Zhou, Hongxia Zhu, Ningzhi Xu, Shufang Liang
SUMOylation, one of post-translational modifications, is covalently modified on lysine residues of a target protein through an enzymatic cascade reaction similar to protein ubiquitination. Along with identification of many SUMOylated proteins, protein SUMOylation has been proven to regulate multiple biological activities including transcription, cell cycle, DNA repair and innate immunity. The dysregulation of protein SUMOylation and deSUMOylation modification is linked with carcinogenesis and tumor progression...
May 21, 2018: Molecular Pharmacology
https://www.readbyqxmd.com/read/29780388/regulation-of-hematopoietic-cell-development-and-function-through-phosphoinositides
#4
REVIEW
Mila Elich, Karsten Sauer
One of the most paramount receptor-induced signal transduction mechanisms in hematopoietic cells is production of the lipid second messenger phosphatidylinositol(3,4,5)trisphosphate (PIP3 ) by class I phosphoinositide 3 kinases (PI3K). Defective PIP3 signaling impairs almost every aspect of hematopoiesis, including T cell development and function. Limiting PIP3 signaling is particularly important, because excessive PIP3 function in lymphocytes can transform them and cause blood cancers. Here, we review the key functions of PIP3 and related phosphoinositides in hematopoietic cells, with a special focus on those mechanisms dampening PIP3 production, turnover, or function...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29780380/mitochondrial-damage-associated-molecular-patterns-from-inflammatory-signaling-to-human-diseases
#5
REVIEW
Serge Grazioli, Jérôme Pugin
Over the recent years, much has been unraveled about the pro-inflammatory properties of various mitochondrial molecules once they are leaving the mitochondrial compartment. On entering the cytoplasm or the extracellular space, mitochondrial DAMPs (also known as mitochondrial alarmins) can become pro-inflammatory and initiate innate and adaptive immune responses by activating cell surface and intracellular receptors. Current evidence indicates that uncontrolled and excessive release of mitochondrial DAMPs is associated with severity, has prognosis value in human diseases, and contributes to the dysregulated process observed in numerous inflammatory and autoimmune conditions, as well as in ischemic heart disease and cancer...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29780357/altered-circadian-rhythms-and-breast-cancer-from-the-human-to-the-molecular-level
#6
REVIEW
Hui-Hsien Lin, Michelle E Farkas
Circadian clocks are fundamental, time-tracking systems that allow organisms to adapt to the appropriate time of day and drive many physiological and cellular processes. Altered circadian rhythms can result from night-shift work, chronic jet lag, exposure to bright lights at night, or other conditioning, and have been shown to lead to increased likelihood of cancer, metabolic and cardiovascular diseases, and immune dysregulation. In cases of cancer, worse patient prognoses and drug resistance during treatment have also been observed...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29778935/different-levels-of-pro-and-anti-inflammatory-cytokines-in-patients-with-unipolar-and-bipolar-depression
#7
Ruizhi Mao, Chen Zhang, Jun Chen, Guoqing Zhao, Rubai Zhou, Fan Wang, Jingjing Xu, Tao Yang, Yousong Su, Jia Huang, Zhiguo Wu, Lan Cao, Yong Wang, Yingyan Hu, Chengmei Yuan, Zhenghui Yi, Wu Hong, Zuowei Wang, Daihui Peng, Yiru Fang
BACKGROUND: Immune system dysregulation is critical in the physiopathology of major depressive disorder (MDD) and bipolar disorder (BD). However, it is unclear whether both diseases present the same inflammatory patterns during depressive episodes. We explored the differences in pro- and anti-inflammatory cytokines between unipolar and bipolar depression (BDD) and the trajectory of these cytokines after acute-phase treatment. METHODS: Sixty-four MDD patients, 61 BDD patients, and 62 healthy controls (HCs) were enrolled...
April 25, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29778842/curcumin-attenuates-sepsis-induced-acute-organ-dysfunction-by-preventing-inflammation-and-enhancing-the-suppressive-function-of-tregs
#8
Longwang Chen, Yang Lu, Linjun Zhao, Lili Hu, Qiaomeng Qiu, Zhuoling Zhang, Mengfang Li, Guangliang Hong, Bing Wu, Guangju Zhao, Zhongqiu Lu
Sepsis is characterized by the extensive release of cytokines and other mediators. It results in a dysregulated immune response and can lead to organ damage and death. Curcumin has anti-inflammatory properties and immunoregulation functions in various disorders such as sepsis, cancer, rheumatoid arthritis, cardiovascular diseases, lung fibrosis, gallstone formation, and diabetes. This paper investigates the effects of curcumin on immune status and inflammatory response in mice subjected to cecal ligation and puncture (CLP)...
May 17, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29778503/autoinflammatory-mutation-in-nlrc4-reveals-an-lrr-lrr-oligomerization-interface
#9
Fiona Moghaddas, Ping Zeng, Yuxia Zhang, Heike Schützle, Sebastian Brenner, Sigrun R Hofmann, Reinhard Berner, Yuanbo Zhao, Bingtai Lu, Xiaoyun Chen, Li Zhang, Suyun Cheng, Stefan Winkler, Kai Lehmberg, Scott W Canna, Peter E Czabotar, Ian P Wicks, Dominic De Nardo, Christian M Hedrich, Huasong Zeng, Seth L Masters
BACKGROUND: Monogenic autoinflammatory disorders are characterised by dysregulation of the innate immune system, for example by gain-of-function mutations in inflammasome forming proteins such as NLRC4. OBJECTIVE: Here we investigate the mechanism by which a novel mutation in the leucine rich repeat (LRR) domain of NLRC4 (c.G1965C, p.W655C) contributes to autoinflammatory disease. METHODS: We studied two unrelated patients with early onset macrophage activation syndrome (MAS) harboring the same de novo mutation in NLRC4...
May 17, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29777710/mir-616-3p-promotes-angiogenesis-and-emt-in-gastric-cancer-via-the-pten-akt-mtor-pathway
#10
Zhen-Hua Wu, Chen Lin, Chen-Chen Liu, Wei-Wei Jiang, Ming-Zhu Huang, Xin Liu, Wei-Jian Guo
Dysregulation of microRNAs has been demonstrated to be involved in a variety of biological events related to cancer, including proliferation, metastasis, angiogenesis and immune escape. miR-616-3p is located on the chromosome region 12q13.3, however, its potential role and clinical implications in gastric cancer remain poorly understood. The current study aimed to investigate the potential role of miR-616-3p in gastric cancer. The results showed that miR-616-3p was up-regulated in cancer tissues. Higher expression of miR-616-3p in tumor tissues also predicted poor prognosis...
May 16, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29777306/respiratory-manifestations-in-lps-responsive-beige-like-anchor-lrba-protein-deficient-patients
#11
Oded Shamriz, Bella Shadur, Adeeb NaserEddin, Irina Zaidman, Natalia Simanovsky, Orly Elpeleg, Eitan Kerem, Joel Reiter, Polina Stepensky
Lipopolysaccharide (LPS)-responsive beige-like anchor (LRBA) protein deficiency is a rare syndrome of primary immune deficiency and immune dysregulation. In this study, we sought to summarize our experience with respiratory manifestations in LRBA-deficient patients. We conducted a retrospective analysis of the medical records of LRBA-deficient patients treated at Hadassah-Hebrew University Medical Center, Jerusalem, Israel. Data retrieved included pulmonary workup, disease course, treatment, and outcome. Ten patients were included...
May 18, 2018: European Journal of Pediatrics
https://www.readbyqxmd.com/read/29776427/rheumatoid-meningitis-developed-in-patient-with-stable-rheumatoid-arthritis-and-myasthenia-gravis-detailed-analysis-of-intracranial-inflammation-using-flow-cytometry
#12
Miki Oono, Yoshimasa Fujita, Nobuaki Uchida, Ukichiro Kawai, Michiyo Fujita-Nakata, Megumi Nakanishi, Mitsuru Sanada, Shigemi Nagayama, Makoto Matsui
BACKGROUND: Rheumatoid meningitis (RM) is a rare disorder that often develops during a remission phase of rheumatoid arthritis (RA). This is the first study to demonstrate differences in regard to immunological disturbance between blood and cerebrospinal fluid (CSF) samples obtained from a patient with RM using flow cytometry. CASE PRESENTATION: A 36-year-old woman with RA and generalized myasthenia gravis (MG) developed RM during a remission phase. Although both RA and MG were stable and well controlled, she noticed fever, headache, and transient sensory disturbance...
May 18, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29775896/dysregulated-network-of-mirnas-involved-in-the-pathogenesis-of-multiple-sclerosis
#13
REVIEW
Sanam Dolati, Faroogh Marofi, Zohreh Babaloo, Leili Aghebati-Maleki, Leila Roshangar, Majid Ahmadi, Reza Rikhtegar, Mehdi Yousefi
Multiple sclerosis (MS) is a chronic and organ-specific autoimmune disease in which immune cells act against the myelin sheath, resulting in central nervous system (CNS) damage. It has been revealed that miRNAs can play significant role in the pathogenesis of MS. These regulatory molecules lead to the activation of different signaling pathways, regulation of several transcriptional factors, influencing the differentiation of Th17 cells, development of Tregs and alteration from Th2 to Th1 response in MS. New studies have discovered that dysregulation of miRNAs may trigger abnormal immune responses leading consequently in the emergence of autoimmunity...
May 15, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29775721/critical-evaluation-of-2-ethylhexyl-acrylate-dermal-carcinogenicity-studies-using-contemporary-criteria
#14
REVIEW
Sandra Murphy, Robert Ellis-Hutchings, Lavorgie Finch, Stefanie Welz, Karin Wiench
Skin tumors have been observed in C3H/HeJ mice following treatment with high and strongly irritating concentrations of 2-ethylhexyl acrylate (2-EHA). Dermal carcinogenicity studies performed with 2-EHA are reviewed, contrasting the results in two mouse strains (C3H/HeJ and NMRI) under different dosing regimens. Application of contemporary evaluation criteria to the existing dermal carcinogenicity dataset demonstrates that 2-EHA induces skin tumors only at concentrations exceeding an maximum tolerated dose (MTD) and in the immune-dysregulated C3H/HeJ mouse model...
May 15, 2018: Toxicology Letters
https://www.readbyqxmd.com/read/29775636/epithelial-proliferation-in-inflammatory-skin-disease-is-regulated-by-ttc7-in-fibroblasts-and-lymphocytes
#15
Ursina Nüesch, Andrea A Mauracher, Lennart Opitz, Benjamin Volkmer, Katarzyna Michalak-Mićka, Jivko Kamarachev, Tom Hartwig, Ernst Reichmann, Burkhard Becher, Stefano Vavassori, Jana Pachlopnik Schmid
BACKGROUND: Mutations in tetratricopeptide repeat domain 7A (TTC7A) and its mouse orthologue Ttc7 result in a multisystemic disease, mostly affecting epithelial barriers and the immune system. Despite successful hematopoietic stem cell transplantation, ongoing progression of gastrointestinal manifestations can be life-threatening in TTC7A-deficient patients. OBJECTIVE: To identify whether TTC7A mutations dysregulate epithelial cells only, or whether a cell-intrinsic defect in lymphocytes or other cells contributes to disease manifestations...
May 15, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29774159/toll-like-receptors-2-and-4-modulate-intestinal-il-10-differently-in-ileum-and-colon
#16
Eva Latorre, Elena Layunta, Laura Grasa, Julián Pardo, Santiago García, Ana I Alcalde, José E Mesonero
Background: Inflammatory bowel diseases are consequence of an intestinal homeostasis breakdown in which innate immune dysregulation is implicated. Toll-like receptor (TLR)2 and TLR4 are immune recognition receptors expressed in the intestinal epithelium, the first physical-physiological barrier for microorganisms, to inform the host of the presence of Gram-positive and Gram-negative organisms. Interleukin (IL)-10 is an essential anti-inflammatory cytokine that contributes to maintenance of intestinal homeostasis...
April 2018: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/29774029/lfa-1-in-t-cell-migration-and-differentiation
#17
REVIEW
Brandon L Walling, Minsoo Kim
Maintenance of homeostatic immune surveillance and development of effective adaptive immune responses require precise regulation of spatial and temporal lymphocyte trafficking throughout the body to ensure pathogen clearance and memory generation. Dysregulation of lymphocyte activation and migration can lead to impaired adaptive immunity, recurrent infections, and an array of autoimmune diseases and chronic inflammation. Central to the recruitment of T cells, integrins are cell surface receptors that regulate adhesion, signal transduction, and migration...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29774026/critical-role-of-alternative-m2-skewing-in-mir-155-deletion-mediated-protection-of-colitis
#18
Jintao Li, Ji Zhang, Hongxia Guo, Shimin Yang, Weiping Fan, Nan Ye, Zhiqiang Tian, Tiantian Yu, Guoping Ai, Zigang Shen, Haiyang He, Ping Yan, Hui Lin, Xue Luo, Hongli Li, Yuzhang Wu
Inflammatory bowel disease (IBD) is associated with dysregulation of both innate and adaptive immune response in the intestine. MicroRNA (miR)-155 is frequently expressed and functions in many immune cell types. Besides its function in adaptive immunity, miR-155 is a key regulator of the innate immune response in macrophages, dendritic cells, and even in epithelia cells. Although the roles of miR-155 within T and B lymphocytes in colitis have been reported, its function in innate immune cells has not been thoroughly examined...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29774023/ferritin-h-deficiency-in-myeloid-compartments-dysregulates-host-energy-metabolism-and-increases-susceptibility-to-mycobacterium-tuberculosis-infection
#19
Vineel P Reddy, Krishna C Chinta, Vikram Saini, Joel N Glasgow, Travis D Hull, Amie Traylor, Fernanda Rey-Stolle, Miguel P Soares, Rajhmun Madansein, Md Aejazur Rahman, Coral Barbas, Kievershen Nargan, Threnesan Naidoo, Pratistadevi K Ramdial, James F George, Anupam Agarwal, Adrie J C Steyn
Iron is an essential factor for the growth and virulence of Mycobacterium tuberculosis ( Mtb) . However, little is known about the mechanisms by which the host controls iron availability during infection. Since ferritin heavy chain (FtH) is a major intracellular source of reserve iron in the host, we hypothesized that the lack of FtH would cause dysregulated iron homeostasis to exacerbate TB disease. Therefore, we used knockout mice lacking FtH in myeloid-derived cell populations to study Mtb disease progression...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29766256/monogenic-systemic-lupus-erythematosus-insights-in-pathophysiology
#20
REVIEW
Ezgi Deniz Batu
Systemic lupus erythematosus (SLE) is a complex disease with different genetic, immunologic, and environmental factors contributing to the pathogenesis. Monogenic SLE could help us understand the main phases of immune dysregulation in SLE. The aim of this review is to summarize the current knowledge on monogenic SLE with the implications of the respective genes on disease pathogenesis. A comprehensive literature search on monogenic SLE was conducted utilizing the Cochrane Library and MEDLINE/PubMed databases...
May 15, 2018: Rheumatology International
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