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https://www.readbyqxmd.com/read/29779041/the-potential-importance-of-myeloid-derived-suppressor-cells-mdscs-in-the-pathogenesis-of-alzheimer-s-disease
#1
REVIEW
Antero Salminen, Kai Kaarniranta, Anu Kauppinen
The exact cause of Alzheimer's disease (AD) is still unknown, but the deposition of amyloid-β (Aβ) plaques and chronic inflammation indicates that immune disturbances are involved in AD pathogenesis. Recent genetic studies have revealed that many candidate genes are expressed in both microglia and myeloid cells which infiltrate into the AD brains. Invading myeloid cells controls the functions of resident microglia in pathological conditions, such as AD pathology. AD is a neurologic disease with inflammatory component where the immune system is not able to eliminate the perpetrator, while, concurrently, it should prevent neuronal injuries induced by inflammation...
May 19, 2018: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/29778674/innate-effector-cells-in-angiogenesis-and-lymphangiogenesis
#2
REVIEW
Gilda Varricchi, Stefania Loffredo, Maria Rosaria Galdiero, Giancarlo Marone, Leonardo Cristinziano, Francescopaolo Granata, Gianni Marone
Angiogenesis and lymphangiogenesis are distinct and complex processes requiring a finely tuned balance between stimulatory and inhibitory signals. During adulthood, angiogenesis and lymphangiogenesis are activated at sites of tumor growth, tissue injury and remodeling, and chronic inflammation. Vascular endothelial growth factors (VEGFs), angiopoietin (ANGPTs) and a multitude of additional signaling molecules play distinct roles in the modulation of angiogenesis/lymphangiogenesis. VEGFs and ANGPTs activate specific tyrosine kinase receptor (e...
May 17, 2018: Current Opinion in Immunology
https://www.readbyqxmd.com/read/29778303/the-physiopathologic-interplay-between-stem-cells-and-tissue-niche-in-muscle-regeneration-and-the-role-of-il-6-on-muscle-homeostasis-and-diseases
#3
Laura Forcina, Carmen Miano, Antonio Musarò
Skeletal muscle is a complex, dynamic tissue characterized by an elevated plasticity. Although the adult muscle is mainly composed of multinucleated fibers with post mitotic nuclei, it retains a remarkable ability to regenerate in response to traumatic events. The regenerative potential of the adult skeletal muscle relies in the activity of satellite cells, mononucleated cells residing within the muscle in intimate association with myofibers. Satellite cells normally remain quiescent in their sublaminar position, sporadically entering the cell cycle to guarantee an efficient cellular turnover, by fusing with pre-existing myofibers, and to maintain the stem cell pool...
May 16, 2018: Cytokine & Growth Factor Reviews
https://www.readbyqxmd.com/read/29777219/tissue-resident-memory-t-cells-at-the-center-of-immunity-to-solid-tumors
#4
REVIEW
Derk Amsen, Klaas P J M van Gisbergen, Pleun Hombrink, Rene A W van Lier
Immune responses in tissues are constrained by the physiological properties of the tissue involved. Tissue-resident memory T cells (TRM cells) are a recently discovered lineage of T cells specialized for life and function within tissues. Emerging evidence has shown that TRM cells have a special role in the control of solid tumors. A high frequency of TRM cells in tumors correlates with favorable disease progression in patients with cancer, and studies of mice have shown that TRM cells are necessary for optimal immunological control of solid tumors...
May 18, 2018: Nature Immunology
https://www.readbyqxmd.com/read/29771104/-appropriateness-of-antimicrobial-prescriptions-in-the-emergency-department-of-a-tertiary-hospital
#5
L Yunquera-Romero, I Márquez-Gómez, A Henares-López, M J Morales-Lara, C Gallego Fernández, R Asensi-Díez
OBJECTIVE: Antibiotics are widely prescribed in the Emergency Department (ED), representing 26-62% of outpatient antibiotic prescriptions. Around 40% of antibiotic prescriptions in hospitalized patients are inappropriate or unnecessary. The aim of the study was to assess the appropriateness of antibiotic prescriptions according to local empirical antibiotic treatment guidelines, in the ED of a tertiary hospital. METHODS: Observational, retrospective study including patients attending the ED in November 2016, with an antibiotic prescription, excluding those from residents...
May 16, 2018: Revista Española de Quimioterapia: Publicación Oficial de la Sociedad Española de Quimioterapia
https://www.readbyqxmd.com/read/29770238/charlson-comorbidity-index-as-a-predictor-of-periodontal-disease-in-elderly-participants
#6
Jae-Hong Lee, Jung-Kyu Choi, Seong-Nyum Jeong, Seong-Ho Choi
Purpose: This study investigated the validity of the Charlson comorbidity index (CCI) as a predictor of periodontal disease (PD) over a 12-year period. Methods: Nationwide representative samples of 149,785 adults aged ≥60 years with PD (International Classification of Disease, 10th revision [ICD-10], K052-K056) were derived from the National Health Insurance Service-Elderly Cohort during 2002-2013. The degree of comorbidity was measured using the CCI (grade 0-6), including 17 diseases weighted on the basis of their association with mortality, and data were analyzed using multivariate Cox proportional-hazards regression in order to investigate the associations of comorbid diseases (CDs) with PD...
April 2018: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29769669/diverse-mechanisms-for-endogenous-regeneration-and-repair-in-mammalian-organs
#7
REVIEW
James M Wells, Fiona M Watt
Mammalian organs comprise an extraordinary diversity of cell and tissue types. Regenerative organs, such as the skin and gastrointestinal tract, use resident stem cells to maintain tissue function. Organs with a lower cellular turnover, such as the liver and lungs, mostly rely on proliferation of committed progenitor cells. In many organs, injury reveals the plasticity of both resident stem cells and differentiated cells. The ability of resident cells to maintain and repair organs diminishes with age, whereas, paradoxically, the risk of cancer increases...
May 2018: Nature
https://www.readbyqxmd.com/read/29768212/mtor-senses-environmental-cues-to-shape-the-fibroblast-like-synoviocyte-response-to-inflammation
#8
Thomas Karonitsch, Richard K Kandasamy, Felix Kartnig, Barbara Herdy, Karolina Dalwigk, Birgit Niederreiter, Johannes Holinka, Florian Sevelda, Reinhard Windhager, Martin Bilban, Thomas Weichhart, Marcus Säemann, Thomas Pap, Günter Steiner, Josef S Smolen, Hans P Kiener, Giulio Superti-Furga
Accumulating evidence suggests that metabolic master regulators, including mTOR, regulate adaptive and innate immune responses. Resident mesenchymal tissue components are increasingly recognized as key effector cells in inflammation. Whether mTOR also controls the inflammatory response in fibroblasts is insufficiently studied. Here, we show that TNF signaling co-opts the mTOR pathway to shift synovial fibroblast (FLS) inflammation toward an IFN response. mTOR pathway activation is associated with decreased NF-κB-mediated gene expression (e...
May 15, 2018: Cell Reports
https://www.readbyqxmd.com/read/29768135/seeing-the-light-the-roles-of-red-and-blue-light-sensing-in-plant-microbes
#9
Gwyn A Beattie, Bridget M Hatfield, Haili Dong, Regina S McGrane
Plants collect, concentrate, and conduct light throughout their tissues, thus enhancing light availability to their resident microbes. This review explores the role of photosensing in the biology of plant-associated bacteria and fungi, including the molecular mechanisms of red-light sensing by phytochromes and blue-light sensing by LOV (light-oxygen-voltage)-domain proteins in these microbes. Bacteriophytochromes function as major drivers of the bacterial transcriptome and mediate light-regulated suppression of virulence, motility, and conjugation in some phytopathogens and light-regulated induction of the photosynthetic apparatus in a stem-nodulating symbiont...
May 16, 2018: Annual Review of Phytopathology
https://www.readbyqxmd.com/read/29768045/mfe-hi-adipose-tissue-macrophages-compensate-for-tissue-iron-pertubations-in-mice
#10
Merla J Hubler, Keith M Erikson, Arion J Kennedy, Alyssa H Hasty
Resident adipose tissue macrophages (ATMs) play multiple roles to maintain tissue homeostasis, such as removing excess FFAs and regulation of extracellular matrix. The phagocytic nature and oxidative resiliency of macrophages not only allows them to function as innate immune cells but also to respond to specific tissue needs, such as iron homeostasis. MFehi ATMs are a subtype of resident ATMs that we recently identified to have twice the intracellular iron content as other ATMs and elevated expression of iron handling genes...
May 16, 2018: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/29767563/integrative-physiology-of-pneumonia
#11
Lee J Quinton, Allan J Walkey, Joseph P Mizgerd
Pneumonia is a type of acute lower respiratory infection that is common and severe. The outcome of lower respiratory infection is determined by the degrees to which immunity is protective and inflammation is damaging. Intercellular and interorgan signaling networks coordinate these actions to fight infection and protect the tissue. Cells residing in the lung initiate and steer these responses, with additional immunity effectors recruited from the bloodstream. Responses of extrapulmonary tissues, including the liver, bone marrow, and others, are essential to resistance and resilience...
July 1, 2018: Physiological Reviews
https://www.readbyqxmd.com/read/29764450/evaluation-of-target-dose-inhomogeneity-in-breast-cancer-treatment-due-to-tissue-elemental-differences
#12
A Fogliata, F De Rose, A Stravato, G Reggiori, S Tomatis, M Scorsetti, L Cozzi
BACKGROUND: Monte Carlo simulations were run to estimate the dose variations generated by thedifference arising from the chemical composition of the tissues. METHODS: CT datasets of five breast cancer patients were selected. Mammary gland was delineated as clinical target volume CTV, as well as CTV_lob and CTV_fat, being the lobular and fat fractions of the entire mammary gland. Patients were planned for volumetric modulated arc therapy technique, optimized in the Varian Eclipse treatment planning system...
May 15, 2018: Radiation Oncology
https://www.readbyqxmd.com/read/29763891/endothelial-progenitor-cells-and-kidney-diseases
#13
Abdullah Ozkok, Alaattin Yildiz
Endothelial progenitor cells (EPC) are bone marrow derived or tissue-resident cells that play major roles in the maintenance of vascular integrity and repair of endothelial damage. Although EPCs may be capable of directly engrafting and regenerating the endothelium, the most important effects of EPCs seem to be depended on paracrine effects. In recent studies, specific microvesicles and mRNAs have been found to mediate the pro-angiogenic and regenerative effects of EPCs on endothelium. EPC counts have important prognostic implications in cardiovascular diseases (CVD)...
May 10, 2018: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29761404/genetic-models-of-macrophage-depletion
#14
Li Hua, Jiayuan Shi, Leonard D Shultz, Guangwen Ren
Macrophages are a heterogeneous population of innate immune cells and are distributed in most adult tissues. Certain tissue-resident macrophages with a prenatal origin, together with postnatal monocyte-derived macrophages, serve as the host scavenger system to eliminate invading pathogens, malignant cells, senescent cells, dead cells, cellular debris, and other foreign substances. As a key member of the mononuclear phagocyte system, macrophages play essential roles in regulation of prenatal development, tissue homeostasis, and disease progression...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29761395/viral-replication-assay-in-bone-marrow-derived-macrophages
#15
Linda Roback, Lisa P Daley-Bauer
The selection of macrophages as a cell type for investigating virus-host interactions is based on cellular tropism of the virus during infection as well as contribution of these cells to pathogenesis in the host. In response to mouse cytomegalovirus (MCMV) infection, bone marrow-resident monocytes that mobilize to infected tissues to differentiate into macrophages and dendritic cells are hijacked in order to facilitate viral persistence. These cells contribute significantly to MCMV biology and, thus, are actively recruited by the virus-encoded chemokine...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29761391/isolation-and-phenotyping-of-intestinal-macrophages
#16
Vanessa Petit
Macrophages are one of the most abundant leucocytes in the intestinal mucosa where they are essential for maintaining homeostasis. However they are also implicated in the pathogenesis of disorders such as inflammatory bowel disease (IBD), offering potential targets for novel therapies.Tissue macrophages are a heterogeneous population of immune cells that fulfill tissue-specific and niche-specific functions. These unique phenotypes likely reflect the heterogeneity of tissue macrophage origins and influence the tissue environment in which they reside...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29761390/isolation-and-phenotyping-of-bone-marrow-macrophages
#17
Marion Chalot
Macrophages are present in most of the tissues in the organism. They are basically separated into two categories: the resident macrophages, specific of the tissue and capable of proliferation, and the macrophages deriving from the monocyte differentiation. In the bone marrow, the "resident" macrophages are part of the hematopoietic stem cell niche.Those macrophages are known to have a role in the support of erythropoiesis (Chow, Nat Med 19:429-436, 2013), the maintenance of stem cell in their niches (Chow, J Exp Med 208:261-271, 2011), and are an independent self-renewing population (Hashimoto, Immunity 38:792-804, 2013)...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29761389/isolation-and-phenotyping-of-adult-mouse-microglial-cells
#18
Kathleen Grabert, Barry W McColl
Microglia are the resident macrophages of the central nervous system parenchyma and fulfill crucial roles in brain development, homeostasis, and inflammation. The isolation of a pure microglia population from brain tissue enables the examination of microglial phenotypes without the interference of other cell populations. Microglial extractions from the neonatal brain have been described in various protocols, yet the more established and complex adult mouse brain poses a greater challenge. Here we describe a refined protocol including enzymatic and mechanical dissociation of adult mouse brain tissue and removal of myelin by Percoll density gradient...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29760695/group-2-innate-lymphoid-cells-in-pulmonary-immunity-and-tissue-homeostasis
#19
REVIEW
Barbara C Mindt, Jörg H Fritz, Claudia U Duerr
Group 2 innate lymphoid cells (ILC2) represent an evolutionary rather old but only recently identified member of the family of innate lymphoid cells and have received much attention since their detailed description in 2010. They can orchestrate innate as well as adaptive immune responses as they interact with and influence several immune and non-immune cell populations. Moreover, ILC2 are able to rapidly secrete large amounts of type 2 cytokines that can contribute to protective but also detrimental host immune responses depending on timing, location, and physiological context...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29760084/distinct-macrophage-populations-direct-inflammatory-versus-physiological-changes-in-adipose-tissue
#20
David A Hill, Hee-Woong Lim, Yong Hoon Kim, Wesley Y Ho, Yee Hoon Foong, Victoria L Nelson, Hoang C B Nguyen, Kavya Chegireddy, Jihoon Kim, Andreas Habertheuer, Prashanth Vallabhajosyula, Taku Kambayashi, Kyoung-Jae Won, Mitchell A Lazar
Obesity is characterized by an accumulation of macrophages in adipose, some of which form distinct crown-like structures (CLS) around fat cells. While multiple discrete adipose tissue macrophage (ATM) subsets are thought to exist, their respective effects on adipose tissue, and the transcriptional mechanisms that underlie the functional differences between ATM subsets, are not well understood. We report that obese fat tissue of mice and humans contain multiple distinct populations of ATMs with unique tissue distributions, transcriptomes, chromatin landscapes, and functions...
May 14, 2018: Proceedings of the National Academy of Sciences of the United States of America
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