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Immune metabolism

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https://www.readbyqxmd.com/read/28823120/deoxynivalenol-and-zearalenone-contaminated-feeds-alter-gene-expression-profiles-in-the-livers-of-piglets
#1
Kondreddy Eswar Reddy, Jin Young Jeong, Yookyung Lee, Hyun-Jeong Lee, Min Seok Kim, Dong-Wook Kim, Hyun Jung Jung, Changyong Choe, Young Kyoon Oh, Sung Dae Lee
Objective: The Fusarium mycotoxins of deoxynivalenol (DON) and zerolenone (ZEN) cause health hazards for both humans and farm animals. Therefore, the main intention of this study was to reveal DON and ZEN effects on the mRNA expression of pro-inflammatory cytokines and other immune related genes in the liver of piglets. Methods: In the present study, 15 six-week-old piglets were randomly assigned to the following three different dietary treatments for 4 weeks: control diet, diet containing 8 mg DON/kg feed, and diet containing 0...
August 16, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28822770/regulation-of-autoimmune-myocarditis-by-host-responses-to-the-microbiome
#2
Jobert G Barin, Monica V Talor, Nicola L Diny, SuFey Ong, Julie A Schaub, Elizabeth Gebremariam, Djahida Bedja, Guobao Chen, Hee Sun Choi, Xuezhou Hou, Lei Wu, Ashley B Cardamone, Daniel A Peterson, Noel R Rose, Daniela Čiháková
The extensive, diverse communities that constitute the microbiome are increasingly appreciated as important regulators of human health and disease through inflammatory, immune, and metabolic pathways. We sought to elucidate pathways by which microbiota contribute to inflammatory, autoimmune cardiac disease. We employed an animal model of experimental autoimmune myocarditis (EAM), which results in inflammatory and autoimmune pathophysiology and subsequent maladaptive cardiac remodeling and heart failure. Antibiotic dysbiosis protected mice from EAM and fibrotic cardiac dysfunction...
August 16, 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/28822617/microbiota-dysbiosis-in-select-human-cancers-evidence-of-association-and-causality
#3
REVIEW
Jie Chen, Jada C Domingue, Cynthia L Sears
The human microbiota is a complex ecosystem of diverse microorganisms consisting of bacteria, viruses, and fungi residing predominantly in epidermal and mucosal habitats across the body, such as skin, oral cavity, lung, intestine and vagina. These symbiotic communities in health, or dysbiotic communities in disease, display tremendous interaction with the local environment and systemic responses, playing a critical role in the host's nutrition, immunity, metabolism and diseases including cancers. While the profiling of normal microbiota in healthy populations is useful and necessary, more recent studies have focused on the microbiota associated with disease, particularly cancers...
August 16, 2017: Seminars in Immunology
https://www.readbyqxmd.com/read/28822563/effect-of-pericardial-fat-volume-and-density-on-markers-of-insulin-resistance-and-inflammation-in-patients-with-human-immunodeficiency-virus-infection
#4
Chris T Longenecker, Seunghee Margevicius, Yiying Liu, Mark D Schluchter, Chun-Ho Yun, Hiram G Bezerra, Grace A McComsey
Treated human immunodeficiency virus (HIV) infection is characterized by ectopic fat deposition, a persistent inflammatory state, and increased cardiometabolic risk. In this secondary analysis of a placebo controlled trial of rosuvastatin among 147 HIV+ subjects (median age 46; 78% men) on stable antiretroviral therapy, we aimed to evaluate longitudinal associations between computed tomography (CT) measures of pericardial fat (PCF) volume and density, insulin resistance, and inflammation. We measured PCF volume and density (mean attenuation in Hounsfield units) by noncontrast gated CT at baseline and week 96...
July 24, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28822242/mucosal-immunity-of-the-postpartum-bovine-genital-tract
#5
REVIEW
Dinesh Dadarwal, Colin Palmer, Philip Griebel
In this review, mucosal immune defense mechanisms used to control infections in the bovine genital tract (vestibule, vagina, cervix, uterus and oviduct) during the postpartum period are reviewed. Knowledge gaps are highlighted to emphasize the need for further investigations. Physical barriers to the entry of microbes include vulvar sealing, vestibule-vaginal constriction, a narrow cervical opening and the mucosal epithelium along with the overlying mucus layer. Genital tract mucosal epithelial cells recognize damage-associated molecular patterns and pathogen-associated molecular patterns and respond by secreting antimicrobial peptides and cytokines to recruit and activate immune cells...
August 10, 2017: Theriogenology
https://www.readbyqxmd.com/read/28822227/inborn-errors-of-metabolism-in-a-cohort-of-pregnancies-with-non-immune-hydrops-fetalis-a-single-center-experience
#6
Zandrè Bruwer, Nihal Al Riyami, Tamima Al Dughaishi, Fathiya Al Murshedi, Abeer Al Sayegh, Adila Al Kindy, Douja Meftah, Khalsa Al Kharusi, Amel Al Foori, Naeema Al Yarubi, Patrick Scott, Khalid Al-Thihli
OBJECTIVE: The purpose of this study was to determine the frequency of non-immune hydrops fetalis (NIHF) among all pregnancies referred for prenatal care at Sultan Qaboos University Hospital (SQUH) during the study period and to evaluate the underlying etiologies of NIH. STUDY DESIGN: All pregnancies referred to SQUH between February 2014 and December 2015 were identified, and all pregnancies meeting the diagnosis of NIHF were included in this study. All cases of NIHF referred to our center during this period underwent standard systematic diagnostic work-up that included biochemical and molecular studies in addition to the standard investigations for hydrops fetalis...
August 19, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28821567/chronic-spinal-cord-changes-in-a-high-fat-diet-fed-male-rat-model-of-thoracic-spinal-contusion
#7
Redin A Spann, William J Lawson, Raymond J Grill, Michael R Garrett, Bernadette E Grayson
Individuals that suffer injury to the spinal cord can result in long-term, debilitating sequelae. Spinal cord injured patients have increased risk for the development of metabolic disease which can further hinder the effectiveness of treatments to rehabilitate the cord and improve quality of life. In the present study, we sought to understand the impact of high-fat diet induced obesity on spinal cord injury (SCI) by examining transcriptome changes in the area of the injury and rostral and caudal to site of damage 12 weeks after injury...
August 18, 2017: Physiological Genomics
https://www.readbyqxmd.com/read/28821013/rictor-positively-regulates-b-cell-receptor-signaling-by-modulating-actin-reorganization-via-ezrin
#8
Lu Huang, Yongjie Zhang, Chenguang Xu, Xiaomei Gu, Linlin Niu, Jinzhi Wang, Xiaoyu Sun, Xiaoming Bai, Xingtian Xuan, Qubei Li, Chunwei Shi, Bing Yu, Heather Miller, Gangyi Yang, Lisa S Westerberg, Wanli Liu, Wenxia Song, Xiaodong Zhao, Chaohong Liu
As the central hub of the metabolism machinery, the mammalian target of rapamycin complex 2 (mTORC2) has been well studied in lymphocytes. As an obligatory component of mTORC2, the role of Rictor in T cells is well established. However, the role of Rictor in B cells still remains elusive. Rictor is involved in B cell development, especially the peripheral development. However, the role of Rictor on B cell receptor (BCR) signaling as well as the underlying cellular and molecular mechanism is still unknown. This study used B cell-specfic Rictor knockout (KO) mice to investigate how Rictor regulates BCR signaling...
August 2017: PLoS Biology
https://www.readbyqxmd.com/read/28820075/t-regulatory-cell-subsets-in-children-with-type-1-diabetes-mellitus-relation-to-control-of-the-disease
#9
Mabrouk Ghonaim, Rawhia El-Edel, Wafaa Abo El Fotoh, Samar Kamal Eldein, Samar Salman
BACKGROUND: Type 1 diabetes mellitus described as a chronic metabolic disorder characterized by aggressive immune β-cell destruction. There are numbers of varied immune mechanisms for sustaining self-tolerance in opposition to the autoimmune disorders. A recessive tolerance accomplished by thymic gland via a negative assortment of different clones while a dominant tolerance accomplished by the regulatory T cells (Treg) in the periphery. Treg (CD4+CD25+FOXP3+) are subsets of T cells which have an essential role in maintaining tolerance...
August 17, 2017: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/28820005/inhibition-of-endocannabinoid-metabolizing-enzymes-in-peripheral-tissues-following-developmental-chlorpyrifos-exposure-in-rats
#10
Robert W Buntyn, Navatha Alugubelly, Rachel L Hybart, Afzaal N Mohammed, Carole A Nail, Greta C Parker, Matthew K Ross, Russell L Carr
Repeated developmental exposure to the organophosphate (OP) insecticide chlorpyrifos (CPF) inhibits brain fatty acid amide hydrolase (FAAH) activity at low levels, whereas at higher levels, it inhibits brain monoacylglycerol lipase (MAGL) activity. FAAH and MAGL hydrolyze the endocannabinoids anandamide (AEA) and 2-arachidonylglycerol (2-AG), respectively. Peripherally, AEA and 2-AG have physiological roles in the regulation of lipid metabolism and immune function, and altering the normal levels of these lipid mediators can negatively affect these processes...
January 1, 2017: International Journal of Toxicology
https://www.readbyqxmd.com/read/28819582/relationship-of-metabolic-alterations-and-pd-l1-expression-in-cisplatin-resistant-lung-cancer
#11
M Wangpaichitr, H Kandemir, Y Y Li, C Wu, Djm Nguyen, L G Feun, M T Kuo, N Savaraj
Despite numerous reports on immune checkpoint inhibitor for the treatment of non-small cell lung cancer (NSCLC), the response rate remains low but durable. Thus cisplatin still plays a major role in the treatment of NSCLC. While there are many mechanisms involved in cisplatin resistance, alteration in metabolic phenotypes with elevated levels of reactive oxygen species (ROS) are found in several cisplatin resistant tumors. These resistant cells become more reliant on mitochondria oxidative metabolism instead of glucose...
April 28, 2017: Cell & Developmental Biology
https://www.readbyqxmd.com/read/28819165/atp-sensitive-inwardly-rectifying-potassium-channel-regulation-of-viral-infections-in-honey-bees
#12
Scott T O'Neal, Daniel R Swale, Troy D Anderson
Honey bees are economically important pollinators of a wide variety of crops that have attracted the attention of both researchers and the public alike due to unusual declines in the numbers of managed colonies in some parts of the world. Viral infections are thought to be a significant factor contributing to these declines, but viruses have proven a challenging pathogen to study in a bee model and interactions between viruses and the bee antiviral immune response remain poorly understood. In the work described here, we have demonstrated the use of flock house virus (FHV) as a model system for virus infection in bees and revealed an important role for the regulation of the bee antiviral immune response by ATP-sensitive inwardly rectifying potassium (KATP) channels...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819133/combined-transcriptome-and-metabolome-analyses-of-metformin-effects-reveal-novel-links-between-metabolic-networks-in-steroidogenic-systems
#13
Sameer S Udhane, Balazs Legeza, Nesa Marti, Damian Hertig, Gaëlle Diserens, Jean-Marc Nuoffer, Peter Vermathen, Christa E Flück
Metformin is an antidiabetic drug, which inhibits mitochondrial respiratory-chain-complex I and thereby seems to affect the cellular metabolism in many ways. It is also used for the treatment of the polycystic ovary syndrome (PCOS), the most common endocrine disorder in women. In addition, metformin possesses antineoplastic properties. Although metformin promotes insulin-sensitivity and ameliorates reproductive abnormalities in PCOS, its exact mechanisms of action remain elusive. Therefore, we studied the transcriptome and the metabolome of metformin in human adrenal H295R cells...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819105/a-novel-method-for-genome-wide-profiling-of-dynamic-host-pathogen-interactions-using-3-end-enriched-rna-seq
#14
Jie Li, Liangliang He, Yun Zhang, Chunyi Xue, Yongchang Cao
Marek's disease is a contagious lymphoproliferative disease of chickens and typical model of viral oncogenesis. Mapping changes or different states over the course of infection for both host and pathogen would provide important insights into dynamic host-pathogen interactions. Here we introduced 3' end enriched RNA-seq as a novel method to study host-pathogen interactions in chicken embryo fibroblasts cells challenged with Marek's disease virus. The method allowed accurate profiling of gene expression and alternative polyadenylation sites for host and pathogen simultaneously...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819082/dysregulation-of-calpain-proteolytic-systems-underlies-degenerative-vascular-disorders
#15
Takuro Miyazaki, Akira Miyazaki
Chronic vascular diseases such as atherosclerosis, aneurysms, diabetic angiopathy/retinopathy as well as fibrotic and proliferative vascular diseases are generally complicated by the progression of degenerative insults, which are characterized by endothelial dysfunction, apoptotic/necrotic cell death in vascular/immune cells, remodeling of extracellular matrix or breakdown of elastic lamella. Increasing evidence suggests that dysfunctional calpain proteolytic systems and defective calpain protein metabolism in blood vessels contribute to degenerative disorders...
August 17, 2017: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/28818615/deep-transcriptome-profiling-sheds-light-on-key-players-in-nucleus-implantation-induced-immune-response-in-the-pearl-oyster-pinctada-martensii
#16
Wei Wang, Yuyuan Wu, Qiannan Lei, Haiying Liang, Yuewen Deng
Immunological rejection of the pearl oysters following nucleus implantation is a major issue limiting the successful rate of cultured pearls. To date, the molecular mechanism of immune tolerance during pearl formation in the pearl oysters is still largely unknown. Through the RNA sequencing platform and comparative transcriptomic analysis, we investigated the chronic gene expression changes at seven time points (0, 5, 10, 15, 20, 30, 60 days post implantation or dpi) over a period of 60 days following nucleus implantation in the pearl oyster Pinctada martensii...
August 14, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28818344/the-2016-espen-arvid-wretlind-lecture-the-gut-in-stress
#17
REVIEW
Stephen A McClave, Cynthia C Lowen, Robert G Martindale
The gut has a major influence on the course of the human stress response in critical illness for several reasons; the quantity of its immune tissue, the extent of interface with the external environment, the expanse of the microbiome, and its access to the systemic circulation. In critical illness, it is not uncommon to lose mucosal barrier function, which exposes the host to the downside effects of luminal contents and epithelial cell regulation. In that setting, the microbiome is converted to a pathobiome, upregulation of metabolic and immune responses occurs, and homeostatic defense systems are compromised...
July 29, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28818081/what-makes-gouty-inflammation-so-variable
#18
REVIEW
Robert Terkeltaub
Acute gout arthritis flares contribute dominantly to gout-specific impaired health-related quality of life, representing a progressively increasing public health problem. Flares can be complex and expensive to treat, partly due to the frequent comorbidities. Unmet needs in gout management are more pressing given the markedly increasing gout flare hospital admission rates. In addition, chronic gouty arthritis can cause joint damage and functional impairment. This review addresses new knowledge on the basis for the marked, inherent variability of responses to deposited urate crystals, including the unpredictable and self-limited aspects of many gout flares...
August 18, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28818037/association-of-coral-algal-symbionts-with-a-diverse-viral-community-responsive-to-heat-shock
#19
Jan D Brüwer, Shobhit Agrawal, Yi Jin Liew, Manuel Aranda, Christian R Voolstra
BACKGROUND: Stony corals provide the structural foundation of coral reef ecosystems and are termed holobionts given they engage in symbioses, in particular with photosynthetic dinoflagellates of the genus Symbiodinium. Besides Symbiodinium, corals also engage with bacteria affecting metabolism, immunity, and resilience of the coral holobiont, but the role of associated viruses is largely unknown. In this regard, the increase of studies using RNA sequencing (RNA-Seq) to assess gene expression provides an opportunity to elucidate viral signatures encompassed within the data via careful delineation of sequence reads and their source of origin...
August 17, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28817599/anguillicola-crassus-infection-affects-mrna-expression-levels-in-gas-gland-tissue-of-european-yellow-and-silver-eel
#20
Gabriel Schneebauer, Ron P Dirks, Bernd Pelster
Using Illumina sequencing, we investigated transcriptional changes caused by the nematode Anguillicola crassus within yellow and silver eels by comparing swimbladder samples of uninfected yellow with infected yellow eels, and uninfected silver with infected silver eels, respectively. In yellow eel gas gland, the infection caused a modification of steady state mRNA levels of 1675 genes, most of them being upregulated. Functional annotation analysis based on GO terms was used to categorize identified genes with regard to swimbladder metabolism or response to the infection...
2017: PloS One
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