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M1/M2 Macrophages: The Arginine Fork in the Road to Health and Disease

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889194995 Year: Pages: 280 DOI: 10.3389/978-2-88919-499-5 Language: English
Publisher: Frontiers Media SA
Subject: Allergy and Immunology --- Medicine (General)
Added to DOAB on : 2015-12-03 13:02:24
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Macrophages have unique and diverse functions necessary for survival. And, in humans (and other species), they are the most abundant leukocytes in tissues. The Innate functions of macrophages that are best known are their unusual ability to either "Kill" or "Repair". Since killing is a destructive process and repair is a constructive process, it was stupefying how one cell could exhibit these 2 polar – opposite functions. However, in the late 1980’s, it was shown that macrophages have a unique ability to enzymatically metabolize Arginine to Nitric Oxide (NO, a gaseous non – specific killer molecule) or to Ornithine (a precursor of polyamines and collagen for repair). The dual Arginine metabolic capacity of macrophages provided a functional explanation for their ability to kill or repair. Macrophages predominantly producing NO are called M1 and those producing Ornithine are called M2. M1 and M2 – dominant responses occur in lower vertebrates, and in T cell deficient vertebrates being directly driven by Damage and Pathogen Associated Molecular Patterns (DAMP and PAMP). Thus, M1 and M2 are Innate responses that protect the host without Adaptive Immunity. In turn, M1/M2 is supplanting previous models in which T cells were necessary to "activate" or "alternatively activate" macrophages (the Th1/Th2 paradigm). M1 and M2 macrophages were named such because of the additional key findings that these macrophages stimulate Th1 and Th2 – like responses, respectively. So, in addition to their unique ability to kill or repair, macrophages also govern Adaptive Immunity. All of the foregoing would be less important if M1 or M2 – dominant responses were not observed in disease. But, they are. The best example to date is the predominance of M2 macrophages in human tumors where they act like wound repair macrophages and actively promote growth. More generally, humans have become M2 – dominant because sanitation, antibiotics and vaccines have lessened M1 responses. And, M2 dominance seems the cause of ever - increasing allergies in developed countries. Obesity represents a new and different circumstance. Surfeit energy (e.g., lipoproteins) causes monocytes to become M1 dominant in the vessel walls causing plaques. Because M1 or M2 dominant responses are clearly causative in many modern diseases, there is great potential in developing the means to selectively stimulate (or inhibit) either M1 or M2 responses to kill or repair, or to stimulate Th1 or Th2 responses, depending on the circumstance. The contributions here are meant to describe diseases of M1 or M2 dominance, and promising new methodologies to modulate the fungible metabolic machinery of macrophages for better health.

Keywords

macrophage --- innate immunity --- M1 --- M2 --- wound --- Cancer --- Infection --- Atherosclerosis

Wound Care

ISBN: 9783038420446 9783038420453 Year: Volume: 1 Pages: 192 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Added to DOAB on : 2015-10-22 06:51:13
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Wounds and the many associated problems have challenged health care providers for centuries and today, despite the wealth of knowledge available, neither the incidence nor prevalence of wounds is reducing. Furthermore, in view of our changing demographic profile and the projected increase in the older population it is likely that wound management will become an ever increasing burden to the individual, health care services and society as a whole. The annual incidence of wounds in the EU-27 is approximately 4 million, and between 25% and 50% of acute hospital beds are occupied by patients with a wound, with up to 60% of these representing non-healing wounds (infected surgical wounds, pressure ulcers, leg/foot ulcers) The increasing prevalence and incidence of non-wounds healing is closely linked with quality of care and, as such, these rising figures reduce society’s confidence in the health service’s ability to deliver care that is timely, appropriate and effective. Thus, for those involved in this specialist area of clinical practice, the fundamental goal is to improve clinical outcomes, reduce the burden of wounds and improve health related quality of life.In this Special Issue “Wound Care” in Healthcare, we invited submission of manuscripts exploring contemporary issues in wound care. By devoting a special issue to wound care, we endeavoured to provide readers with a comprehensive reference source, outlining key areas of interest in this important aspect of clinical practice. The response to the call for manuscripts was fantastic and, as a result, we were able to include both original qualitative and quantitative research papers in addition to review papers, thereby providing readers with a wealth of valuable information pertinent to wound care.

Wounds and Wound Repair in Medieval Culture

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Book Series: Explorations in Medieval Culture ISBN: 9789004306455 Year: Pages: 645 DOI: 10.26530/OAPEN_606734 Language: English
Publisher: Brill Grant: Wellcome Trust - 097469
Subject: Medicine (General) --- History --- Languages and Literatures --- History of arts
Added to DOAB on : 2016-04-22 11:01:18
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The spectacle of the wounded body figured prominently in the Middle Ages, from images of Christ’s wounds on the cross, to the ripped and torn bodies of tortured saints who miraculously heal through divine intervention, to graphic accounts of battlefield and tournament wounds—evidence of which survives in the archaeological record—and literary episodes of fatal (or not so fatal) wounds. This volume offers a comprehensive look at the complexity of wounding and wound repair in medieval literature and culture, bringing together essays from a wide range of sources and disciplines including arms and armaments, military history, medical history, literature, art history, hagiography, and archaeology across medieval and early modern Europe. Contributors are Stephen Atkinson, Debby Banham, Albrecht Classen, Joshua Easterling, Charlene M. Eska, Carmel Ferragud, M.R. Geldof, Elina Gertsman, Barbara A. Goodman, Máire Johnson, Rachel E. Kellett, Ilana Krug, Virginia Langum, Michael Livingston, Iain A. MacInnes, Timothy May, Vibeke Olson, Salvador Ryan, William Sayers, Patricia Skinner, Alicia Spencer-Hall, Wendy J. Turner, Christine Voth, and Robert C. Woosnam-Savage.

Wound Repair and Regeneration

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ISBN: 9783038427674 9783038427681 Year: Pages: 302 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Biology
Added to DOAB on : 2018-03-26 15:46:58
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Wounds are a largely unrecognized, spiraling epidemic that affect millions of people world-wide. They are complex and involve temporal and spatial involvement of many different cell types and tissue processes. Recent advances in our understanding of wound repair and regeneration, as well as the many novel and exciting approaches aimed at healing chronic/acute wounds and reducing scar formation, make this a pertinent time for a Special Issue aimed at overviewing this important field. The goal of this book is to provide a summary of the field, describe its impact, as well as introduce the recent advances in understanding the mechanisms that underpin wound healing and scar formation. The articles include in this book highlight new developments in therapeutic approaches for wound repair including the use of nanomedicine and biomaterials to deliver cells and/or drugs to promote healing. Cellular responses that underpin angiogenesis, inflammation, proliferation and remodeling, as well as advances in cytoskeletal interactions in keratinocytes and fibroblast cell functions. Wound remodeling and scar formation including the roles of growth factors, cytokines and stem cells are included.

Visible Prowess?: Reading Men’s Head and Face Wounds in Early Medieval Europe to 1000 CE (Book chapter)

Book title: Wounds and Wound Repair in Medieval Culture

Authors: ---
Book Series: Explorations in Medieval Culture ISBN: 9789004292796 9789004306455 Year: Pages: 645 Language: English
Publisher: Brill Grant: Wellcome Trust - 097469
Subject: Medicine (General) --- History --- Languages and Literatures --- History of arts
Added to DOAB on : 2018-06-22 11:01:03
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Abstract

The spectacle of the wounded body figured prominently in the Middle Ages, from images of Christ’s wounds on the cross, to the ripped and torn bodies of tortured saints who miraculously heal through divine intervention, to graphic accounts of battlefield and tournament wounds—evidence of which survives in the archaeological record—and literary episodes of fatal (or not so fatal) wounds. This volume offers a comprehensive look at the complexity of wounding and wound repair in medieval literature and culture, bringing together essays from a wide range of sources and disciplines including arms and armaments, military history, medical history, literature, art history, hagiography, and archaeology across medieval and early modern Europe. Contributors are Stephen Atkinson, Debby Banham, Albrecht Classen, Joshua Easterling, Charlene M. Eska, Carmel Ferragud, M.R. Geldof, Elina Gertsman, Barbara A. Goodman, Máire Johnson, Rachel E. Kellett, Ilana Krug, Virginia Langum, Michael Livingston, Iain A. MacInnes, Timothy May, Vibeke Olson, Salvador Ryan, William Sayers, Patricia Skinner, Alicia Spencer-Hall, Wendy J. Turner, Christine Voth, and Robert C. Woosnam-Savage.

Identification and Characterization of Antimicrobial Peptides with Therapeutic Potential

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ISBN: 9783038424628 9783038424635 Year: Pages: X, 280 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Therapeutics
Added to DOAB on : 2017-12-27 08:54:14
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Antimicrobial peptides are key defense molecules adopted by all life forms to prevent infection. They also have other beneficial effects such as boosting immune response, anticancer, and wound healing. The antiviral effects of antimicrobial peptides have laid the foundations for developing new agents to combat seasonal Flu, HIV-1, RSV, Zika, and Ebola. This eBook is constructed to systematically deal with antimicrobial peptides from a variety of natural sources, including fungi, plants, and animals (insects, fish, amphibians, birds, and reptiles). It covers peptide discovery, antimicrobial activity, 3D structure, mechanisms of action and potential applications. Naturally Occurring Antimicrobial Peptides, an eBook published by the journal Pharmaceuticals, provides a helpful introduction to newcomers and refreshes the minds of veterans.

Silver Nano/microparticles: Modification and Applications

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ISBN: 9783039211777 / 9783039211784 Year: Pages: 206 DOI: 10.3390/books978-3-03921-178-4 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2019-08-28 11:21:27
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Nano/micro-size particles are widely applied in various fields. Among the various particles, silver particles are considered among the most prominent nanomaterials in the biomedical and industrial sectors because of their favorable physical, chemical, and biological characteristics. Thus, numerous studies have been conducted to evaluate their properties and utilize them in various applications, such as diagnostics, anti-bacterial and anti-cancer therapeutics, and optoelectronics. The properties of silver particles are strongly influenced by their size, morphological shape, and surface characteristics, which can be modified by diverse synthetic methods, reducing agents, and stabilizers. This Special Issue provides a range of original contributions detailing the synthesis, modification, properties, and applications of silver materials. Nine outstanding papers describing examples of the most recent advances in silver nano/microparticles are included. Silver nano/micro-size particles have many potential advantages as next-generation materials in various areas, including nanomedicine. This Special Issue might be helpful to understand the value of silver particles in the biomedical and industrial fields

Chemical Biology of Sterols, Triterpenoids and Other Natural Products: A Themed Issue in Honor of Professor W. David Nes on the Occasion of His 65th Birthday

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ISBN: 9783038974161 / 9783038974178 Year: Pages: 256 DOI: 10.3390/books978-3-03897-417-8 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology --- Biochemistry
Added to DOAB on : 2019-06-26 08:44:06
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Sterols and other isoprenoids are of great interest for their molecular structure and function in cell architecture and evolution, as well as for their importance in medicine and agriculture. Molecules’ 2019 Festschrift Special Issue in honor of the 65th birthday of Prof. W. David Nes, an internationally recognized chemical biologist and recipient of the George Schroepher medal for sterol research, focuses on recent developments in the chemistry, biosynthesis, and function of these polycyclic natural products. This volume of Molecules contains 16 leading-edge review articles and original research contributions from an international cast of scientists. This volume is grouped into three sections: (i) isoprenoid metabolome and diversity, (ii) clinical evaluation of sterol and triterpene structures and biosynthesis, and (iii) methods and synthesis of steroids and other compounds. The volume will be a valuable reference tool for those who study medicinal chemistry, protein chemistry, and biochemistry of isoprenoid lipids.

Keywords

Zingiber officinale --- gingerols --- cytotoxic activity --- oleanolic acid --- high-fat high-carbohydrate diet --- pre-diabetes --- glucose homeostasis --- insulin resistance --- atherosclerosis --- ROS --- HUVECs --- LOX-1 --- alkaloid --- granatane --- N-methylcadaverine --- N-methylpiperidine. reductive deamination --- Mucorales --- Rhizopus arrhizus --- sterol pattern --- antifungal effectivity --- gas chromatography-mass spectrometry (GC-MS) --- posaconazole --- sterol biosynthesis --- sterol 14?-demethylase --- sterol C24-methyltransferase --- mechanism-based inactivators --- antifungals --- azoles --- antiparasitic drugs --- human African trypanosomiasis --- Chagas disease --- synthesis --- squalene cyclase --- cycloartenol synthase --- triterpene --- fern --- Polystichum --- terpene --- isoprenoid --- divalent metal co-factor ligation --- antioxidant --- cholesterol --- degeneration --- oxysterol --- retina --- Smith-Lemli-Opitz syndrome --- algal sterols --- ergosterol biosynthesis --- infectious disease --- lipidomics --- oxyphytosterol --- pharmacognosy --- phytosterol --- sterolomics --- lupeol --- keratinocytes --- fibroblasts --- wound healing --- cell migration --- UV-radiation --- ZnO --- toxicity --- sterol content --- cholesterol --- leishmania --- solanaceae --- withanolides --- aurelianolides --- phytosterols --- mesocarp --- oilseed --- maturity --- pod-blast --- ?-tocopherol --- oil bodies --- campesterol --- stigmasterol --- ?-sitosterol --- sterol --- C4-demethylation complex (C4DMC) --- 4-methylsterol --- hormone --- steroid --- development --- genetic disease --- bile alcohol --- cholestanoic acid --- oxysterol --- sterolomics --- enzyme-assisted derivatization --- electrospray ionization-mass spectrometry --- Girard reagent --- n/a

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