Immune-to-Brain Signaling in Fever PDF Download
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Author: Elahe Mirrasekhian
Publisher: Linköping University Electronic Press
ISBN: 9179298192
Category :
Languages : en
Pages : 80
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Book Description
Fever is a brain-regulated elevation of body temperature that occurs in response to infectious and non-infectious stimuli. During inflammatory episodes, circulating cytokines that are released by activated immune cells, trigger the induction of cyclooxygenase (COX)-2 in the ventromedial preoptic area of the hypothalamus (the thermoregulation center). COX-2-dependent-prostaglandin (PG)E2 synthesis is essential for the generation of fever and upon an immune challenge, it is induced in several cells within the brain including the brain endothelial cells and perivascular macrophages. However, due to lack of experimental models with cell type-specific modulation of PGE2 synthesizing enzymes, the cellular source of pyrogenic PGE2 and its induction mechanism(s) remained obscure. Using such technology, we showed that the brain endothelium is the cellular source of pyrogenic PGE2 and that activation of brain endothelial IL-6 receptors by circulating IL-6 is critical for the PGE2 induction. Inhibition of PGE2 synthesis is assumed to be the mode of action of many antipyretic drugs, possibly including paracetamol. Given that paracetamol at a high dose has been shown to induce hypothermia by activation of the transient receptor potential ankyrin 1 (TRPA1) ion channel, we examined whether the antipyretic effect of paracetamol is also TRPA1 dependent. Our findings revealed that the antipyretic effect of paracetamol is independent of TRPA1 and associated with inhibition of the PGE2 synthesis in the brain. This thesis provides new insight into the molecular mechanism behind the febrile response in which the peripheral circulating IL-6 communicates with the brain by induction of pyrogenic PGE2 in the brain endothelium. It also demonstrates that the antipyretic effect of paracetamol is exerted by inhibition of the PGE2 synthesis in the brain.
Author: Elahe Mirrasekhian
Publisher: Linköping University Electronic Press
ISBN: 9179298192
Category :
Languages : en
Pages : 80
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Book Description
Fever is a brain-regulated elevation of body temperature that occurs in response to infectious and non-infectious stimuli. During inflammatory episodes, circulating cytokines that are released by activated immune cells, trigger the induction of cyclooxygenase (COX)-2 in the ventromedial preoptic area of the hypothalamus (the thermoregulation center). COX-2-dependent-prostaglandin (PG)E2 synthesis is essential for the generation of fever and upon an immune challenge, it is induced in several cells within the brain including the brain endothelial cells and perivascular macrophages. However, due to lack of experimental models with cell type-specific modulation of PGE2 synthesizing enzymes, the cellular source of pyrogenic PGE2 and its induction mechanism(s) remained obscure. Using such technology, we showed that the brain endothelium is the cellular source of pyrogenic PGE2 and that activation of brain endothelial IL-6 receptors by circulating IL-6 is critical for the PGE2 induction. Inhibition of PGE2 synthesis is assumed to be the mode of action of many antipyretic drugs, possibly including paracetamol. Given that paracetamol at a high dose has been shown to induce hypothermia by activation of the transient receptor potential ankyrin 1 (TRPA1) ion channel, we examined whether the antipyretic effect of paracetamol is also TRPA1 dependent. Our findings revealed that the antipyretic effect of paracetamol is independent of TRPA1 and associated with inhibition of the PGE2 synthesis in the brain. This thesis provides new insight into the molecular mechanism behind the febrile response in which the peripheral circulating IL-6 communicates with the brain by induction of pyrogenic PGE2 in the brain endothelium. It also demonstrates that the antipyretic effect of paracetamol is exerted by inhibition of the PGE2 synthesis in the brain.
Author: Jean-Marc Cavaillon
Publisher: John Wiley & Sons
ISBN: 3527338993
Category : Medical
Languages : en
Pages : 1818
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Book Description
Dieses Fachbuch erläutert die molekularen Grundlagen von Entzündungen, spannt den Bogen zu Infektionskrankheiten und den Zusammenhang zwischen Entzündungen und chronischen Erkrankungen, behandelt abschließend den Heilungsprozess und zeigt Therapiemöglichkeiten.
Author: Nancy J. Rothwell
Publisher: Springer Science & Business Media
ISBN: 1461596955
Category : Medical
Languages : en
Pages : 216
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Book Description
Author: Belgrade Belgrade Press
Publisher:
ISBN: 9781540729194
Category :
Languages : en
Pages : 38
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Book Description
There are numerous causes of a raised core temperature. A fever occurring in sepsis may be associated with a survival benefit. However, this is not the case for non-infective triggers. Where heat generation exceeds heat loss and the core temperature rises above that set by the hypothalamus, a combination of cellular, local, organ-specific, and systemic effects occurs and puts the individual at risk of both short-term and long-term dysfunction which, if severe or sustained, may lead to death. This narrative review is part of a series that will outline the pathophysiology of pyrogenic and non-pyrogenic fever, concentrating primarily on the pathophysiology of non-septic causes. Proceeds from the sale of this book go to support an elderly disabled person.
Author: Laurival Antonio De Luca Jr.
Publisher: CRC Press
ISBN: 1466506938
Category : Science
Languages : en
Pages : 340
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Book Description
A timely symposium entitled Body-Fluid Homeostasis: Transduction and Integration was held at Araraquara, São Paulo, Brazil in 2011. This meeting was convened as an official satellite of a joint gathering of the International Society for Autonomic Neuroscience (ISAN) and the American Autonomic Society (AAS) held in Buzios, Rio de Janeiro. Broad international participation at this event generated stimulating discussion among the invited speakers, leading to the publication of Neurobiology of Body Fluid Homeostasis: Transduction and Integration. Drawn from the proceedings and filled with rich examples of integrative neurobiology and regulatory physiology, this volume: Provides updated research using human and animal models for the control of bodily fluids, thirst, and salt appetite Explores neural and endocrine control of body fluid balance, arterial pressure, thermoregulation, and ingestive behavior Discusses recent developments in molecular genetics, cell biology, and behavioral plasticity Reviews key aspects of brain serotonin and steroid and peptide control of fluid consumption and arterial pressure The book highlights research conducted by leading scientists on signal transduction and sensory afferent mechanisms, molecular genetics, perinatal and adult long-term influences on regulation, central neural integrative circuitry, and autonomic/neuroendocrine effector systems. The findings discussed by the learned contributors are relevant for a basic understanding of disorders such as heat injury, hypertension, and excess salt intake. A unique reference on the neurobiology of body fluid homeostasis, this volume is certain to fuel additional research and stimulate further debate on the topic.
Author: David S. Younger
Publisher: Rowman & Littlefield
ISBN: 1538117711
Category : Health & Fitness
Languages : en
Pages : 289
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Book Description
There are millions of people who experience issues related to brain health—depression, attention issues, anxiety, forgetfulness, fatigue, and even chronic pain—yet can’t figure out what’s causing their problems and can’t find any relief. They may have seen a myriad of doctors, many of whom do not take their complaints seriously, or worse, turn to the easy, often inappropriate fix of antidepressants or anti-anxiety medications. Traditional medications, supplements, or other therapies haven’t worked. No matter what their age—from children to teens or seniors—people and their loved ones are frustrated, scared, and confused by their continued poor health. Countless others display severe psychiatric symptoms that seem to come out of nowhere, ranging from tics, obsessive-compulsive behaviors and anxiety, to depression, bipolar-like mood swings, and even borderline personality disorder and suicidal ideas. Sometimes, the people affected are the only ones that notices a change to the way they think or feel, and they suffer in silence. Or, they reach out to try to get help, and are all too frequently misdiagnosed. David Younger, a world-renowned physician, provides relief to these patients and their families. His diagnostic techniques and treatment protocols will help readers identify the true cause of their symptoms and put them on a clear path to healing so they no longer feel unbalanced, out of control, forgetful, and exhausted. The Autoimmune Brain connects common brain health symptoms to the changes in the immune system, and particularly bacterial, viral, and parasitic infections. Younger explains his groundbreaking research and adds a new component: how traumatic stress (whether physical or emotional) and genetics affects this same triad as inextricable factors in initiating disease and brain health symptoms. In fact, a change in personality, behavior, coping style, and one’s emotional state may be the first clue that there is a health problem brewing somewhere else in the body. Readers will find new answers to troubling conditions, including: Alzheimer’s disease; Anxiety; Arthritis; Autism; Autonomic disturbances; Bacterial and viral infections; Bipolar Disorder; Cancer; Celiac disease and gluten intolerances; Chronic Fatigue Syndrome (now referred to as Systemic Exertion Intolerance Disease); Chronic Pain; Dementia; Depression; Endocrine Disorders; Immune modulatory therapy using IVIg; Lyme disease and co-infections; Mast cell activation syndrome; Medical cannabis; Obsessive Compulsive Disorder; Orthostatic hypotension; Peripheral Neuropathy; Porphyria; Post-Traumatic Stress Disorder; and Postural orthostatic tachycardia.
Author: L.R. Watkins
Publisher: Springer
ISBN: 3034887493
Category : Medical
Languages : en
Pages : 248
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Book Description
Within the past few years, it has become recognized that the immune system communicates to the brain. Substances released from activated immune cells (cytokines) stimulate peripheral nerves, thereby signaling the brain and spinal cord that infection/inflammation has occurred. Additionally, peripheral infection/inflammation leads to de novo synthesis and release of cytokines within the brain and spinal cord. Thus, cytokines effect neural activation both peripherally and centrally. Through this communication pathway, cytokines such as interleukin-1, interleukin-6 and tumor necrosis factor markedly alter brain function, physiology and behavior. One important but underrecognized aspect of this communication is the dramatic impact that immune activation has on pain modulation. The purpose of this book is to examine, for the first time, immune-to-brain communication from the viewpoint of its effect on pain processing. It is aimed both at the basic scientist and health care providers, in order to clarify the major role that substances released by immune cells play in pain modulation. This book contains chapters contributed by all of the major laboratories focused on understanding how cytokines modulate pain. These chapters provide a unique vantage point from which to examine this question, as the summarized work ranges from evolutionary approaches across diverse species, to the basics of the immune response, to the effect of cytokines on peripheral and central nervous system sites, to therapeutic potential in humans.
Author: Eckhard Lammert
Publisher: Springer
ISBN: 9783709107140
Category : Medical
Languages : en
Pages : 0
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Book Description
“Metabolism of Human Diseases” examines the physiology of key organs (e.g. brain, eye, lung, heart, blood vessels, blood, immune system, gastrointestinal tract, pancreas, liver, fat tissue, kidney, reproductive system, teeth, bone and joints) and how defective metabolism and signaling pathways within these organs contribute to common human diseases. The latter include depression, schizophrenia, epilepsy, Parkinson's disease, Alzheimer's disease, migraine, multiple sclerosis, Down syndrome, macular degeneration, glaucoma, asthma, COPD, pneumonia, atherosclerotic heart disease, heart failure, stroke, varicose veins, Sickle cell disease, hyperlipidemia, fever, sepsis, allergies, peptic ulcer, gastroenteritis, lactose intolerance, colon cancer, diabetes, cirrhosis, metabolic syndrome, hypertension, chronic kidney disease, gout, urinary tract infections, kidney stones, dental caries, osteoporosis, osteoarthritis, rheumatoid arthritis, breast cancer and prostate cancer. The book also describes commonly used drugs and explains their molecular targets. It provides the first comprehensive and detailed summary of the metabolism of individual organs and their physiological and pathological functioning. Thus it serves as a useful supplement to previous textbooks of human physiology. “Metabolism of Human Diseases” is a must-have, state-of-the-art textbook written by International experts for graduate students, postdocs and scientists in metabolic research, biochemistry, physiology and pharmacy as well as for physicians interested in molecular mechanisms underlying common human diseases.
Author: Robert Dantzer
Publisher: Springer Science & Business Media
ISBN: 0306461358
Category : Medical
Languages : en
Pages : 334
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Book Description
Until a few years ago, cytokines were only known to immunologists; now these molecules have burst upon neurosciences and permeated several avenues of current research. This book examines the possible role of cytokines in mental depression, based on recent clinical and experimental data, and constitutes the first attempt to make a synthesis between the exciting new developments in cytokine research and their implications for the pathophysiology of mental disorders.
Author: Bruce Alberts
Publisher:
ISBN: 9780815332183
Category : Cytology
Languages : en
Pages : 0
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Book Description
