concept

cytokines

Also known as: cytokines, cytokine, Cytokines

synthesized from dimensions

Cytokines are small, secreted proteins that function as essential chemical messengers within the immune system, serving as a sophisticated communication network that coordinates the body's response to threats such as pathogens [2, 12, 48]. Unlike traditional hormones stored in glands, cytokines are typically synthesized and secreted by cells on demand in response to specific stimuli [10, 23]. They are classified among the major proteins of the immune system, alongside antibodies and complement immune system major proteins.

These molecules are produced by a wide array of immune cells, including macrophages macrophages release cytokines, lymphocytes lymphocytes secrete cytokines, neutrophils neutrophils release cytokines, and mast cells mast cells synthesize cytokines. Furthermore, non-immune cells—such as endothelial cells, fibroblasts, adipocytes adipose secretes cytokines, and astrocytes astrocytes over-produce cytokines—also contribute to the cytokine pool. By binding to specific cell-surface receptors in a "lock-and-key" fashion lock-and-key signaling, cytokines instruct target cells to activate, differentiate, or proliferate [58, 62, 80].

Cytokines operate through autocrine, paracrine, or endocrine signaling mechanisms cytokine signaling mechanisms. While they often act locally, they can travel through the bloodstream to affect distant tissues [29, 60]. Their interactions are complex; they may function in additive, synergistic, or antagonistic ways to fine-tune the biological response additive, synergistic, or antagonistic ways. Beyond immune defense, they are critical for processes such as wound healing diverse cytokine functions, angiogenesis, and even sleep facilitation sleep facilitation where immune-produced cytokines enhance defense.

The diversity of cytokines is reflected in their categorization, which includes interleukins (IL), which relay messages between leukocytes and other cell types; interferons, which signal antiviral defenses; tumor necrosis factors (TNF), which regulate inflammation and tumor destruction; chemokines, which direct the migration of immune cells chemokines direct cells; and colony-stimulating factors, which guide the development of hematopoietic stem cells colony-stimulating factors that direct hematopoietic stem cell development.

Clinical significance arises from the necessity of tight regulation. While essential for health, excessive cytokine production—often termed a "cytokine storm" or Cytokine Release Syndrome—can lead to severe, harmful inflammation [19, 34, 49]. Conversely, chronic inflammation is often driven by persistent, dysregulated cytokine activity excess creates inflammation, and defects in their function are linked to primary immunodeficiencies and autoimmune diseases [26, f9a4fee2-099c-49fb-a955-5755d9c1bc28].

Because of their central role, cytokines are frequently used as clinical markers for inflammation cytokines as markers. Their production and metabolism are influenced by a variety of external factors, including physical exercise exercise lowers cytokines, nutritional status—such as selenium intake nutrients such as selenium regulate their production—and hormonal states like persistent high cortisol, which can suppress cytokine production persistent high cortisol suppress cytokine production.

Model Perspectives (4)

openrouter/google/gemini-3.1-flash-lite-preview 100% confidence

Cytokines are a diverse group of chemical messengers—with over 50 varieties identified—that play a fundamental role in regulating immune responses, cell communication, and various physiological processes, including wound healing, inflammation, and embryogenesis [24, 1, 18, 17]. According to the Cleveland Clinic, these messengers operate through a "lock-and-key" mechanism, where cytokines (the keys) bind to specific receptor markers on cell surfaces (the locks) to deliver instructions [14, 15, 36]. This signaling occurs via three primary pathways: autocrine (acting on the same cell), paracrine (acting on nearby cells), and endocrine (traveling through the bloodstream to distant cells) [3, 30, 12]. Cytokines are produced by various immune cells, including macrophages, which release them to recruit other immune cells to sites of infection and regulate immunity [8, 21, 40]. Other specialized cytokines include chemokines, which direct immune cell movement, and monokines, produced by monocytes [2, 31, 38]. Scientific research indicates that cytokines often interact with one another in additive, synergistic, or antagonistic ways [22]. While essential for fighting pathogens like viruses and bacteria, the balance of cytokine production is critical [1, 6, 7]. The Linus Pauling Institute notes that deficiencies in nutrients like zinc and vitamin B6 can impair cytokine production, potentially leading to oxidative stress or weakened immunity [26, 41]. Conversely, excessive levels of cytokines can cause chronic inflammation and have been linked to autoimmune conditions [19, 37]. The regulation of these levels can be influenced by lifestyle factors, such as regular moderate-intensity exercise [25].

openrouter/google/gemini-3.1-flash-lite-preview definitive 100% confidence

Cytokines are small, secreted proteins that serve as essential signaling molecules within the immune system [2, 12, 48]. Rather than being stored in glands like traditional hormones, cytokines are synthesized and secreted primarily in response to stimulation [10, 23]. They act as a sophisticated communication network, allowing immune cells to coordinate responses to threats such as pathogens [23, 27]. ### Functions and Mechanisms Cytokines regulate inflammation by instructing cells on how to behave, including directing cell activation, differentiation, and proliferation [58, 62, 80]. When a pathogen binds to a macrophage, for instance, it triggers intracellular signaling that leads to the secretion of cytokines to recruit and activate other immune cells [4, 5]. These proteins function by binding to specific cell surface receptors; the sensitivity of a cell to a cytokine is determined by the receptors present on that cell [12, 20]. Beyond immune cells, various non-immune cells—including endothelial, epithelial, fibroblast, and stromal cells—also release cytokines [40, 51]. While they typically act locally, they can also engage in endocrine signaling to affect distant cells [29, 60]. ### Categories and Specific Types Cytokines are categorized into several groups, including: * Interleukins (IL): Originally named for their role between leukocytes, they are now known to relay messages between various cell types [31, 45, 56]. * Interferons: These proteins signal cells to defend against viral replication [3, 45]. * Tumor Necrosis Factors (TNF): These help regulate inflammation and signal the destruction of tumor cells [6, 45]. * Chemokines: These are involved in the recruitment of immune cells to sites of inflammation [9, 33, 45]. ### Clinical Significance While essential for a healthy immune system, cytokine levels must be tightly regulated [32, 46]. Excessive production, known as a 'cytokine storm' or Cytokine Release Syndrome (CRS), can cause harmful inflammation [19, 34, 49]. Conversely, defects in cytokine function can contribute to primary immunodeficiencies [26]. Healthcare providers may utilize a cytokine panel to assess inflammation levels or identify imbalances in cytokine production [50, 54]. Additionally, research indicates that external factors—such as probiotics or specific nutrients like Vitamin B6—can influence cytokine metabolism and expression [15, 39].

openrouter/x-ai/grok-4.1-fast definitive 95% confidence

Cytokines are signaling proteins and chemical messengers central to the immune system, classified among its major proteins alongside antibodies and complement immune system major proteins (IGCares). Produced by various cells including leukocytes leukocytes release cytokines (National Library of Medicine), macrophages macrophages release cytokines (Cedars-Sinai), mast cells mast cells synthesize cytokines (Immunopaedia), lymphocytes lymphocytes secrete cytokines (National Library of Medicine), neutrophils neutrophils release cytokines (National Library of Medicine), and even non-immune cells like adipocytes adipose secretes cytokines (Linus Pauling Institute) and astrocytes astrocytes over-produce cytokines (Vanderbilt University), they regulate immune responses, inflammation, cell growth, differentiation, proliferation, and diverse processes like wound healing and angiogenesis diverse cytokine functions (BioXpedia), cells grow or reproduce (Children's Hospital of Philadelphia). According to Cleveland Clinic, cytokines signal immune cells against pathogens via autocrine, paracrine, or endocrine mechanisms cytokine signaling mechanisms using a lock-and-key receptor binding lock-and-key signaling. Subtypes include chemokines that direct immune cells chemokines direct cells and lymphokines from lymphocytes lymphokines from lymphocytes, with examples like IL-1, IL-6, TNF-α inducing inflammation and systemic effects macrophage cytokine effects (Immunopaedia), and adaptive cytokines like IL-4, IL-2 from T cells IL-4 adaptive cytokine (Thermo Fisher Scientific). Excess cytokines drive chronic inflammation excess creates inflammation (Lifetime Dental NWA), serve as inflammation markers cytokines as markers (ARUP Consult), and are modulated by factors like exercise or selenium exercise lowers cytokines (National Library of Medicine).

openrouter/x-ai/grok-4.1-fast definitive 90% confidence

Cytokines are proteins that function as chemical messengers within the immune system, coordinating responses to threats like viruses and bacteria, according to the Cleveland Clinic. Scientists have identified more than 50 different kinds, as noted by the Children's Hospital of Philadelphia. They are produced by various immune cells, including macrophages, which secrete cytokines such as TNF-alpha, IL-1 beta, IL-6, IL-8, and IL-33 to activate other immune components and recruit cells, leading to inflammation, per Immunopaedia and the Children's Hospital of Philadelphia. Cytokines often interact with each other in additive, synergistic, or antagonistic ways, according to Thermo Fisher Scientific, and can signal via autocrine mechanisms or travel through the bloodstream to target cells with matching receptors, as described by the Cleveland Clinic and Cleveland Clinic. Subtypes include chemokines with chemotactic activity (Thermo Fisher Scientific), monokines from monocytes (Cleveland Clinic), and colony-stimulating factors that direct hematopoietic stem cell development (Cleveland Clinic). They play key roles in processes like wound healing's molecular signaling phase involving cytokines and chemokines (Lake County Government), sleep facilitation where immune-produced cytokines enhance defense (Healthline), and inflammation regulation, though excess levels can cause autoimmune diseases (Cleveland Clinic). Factors like persistent high cortisol suppress cytokine production (oxjournal.org), exercise lowers pro-inflammatory cytokines (National Library of Medicine), and nutrients such as selenium regulate their production (Linus Pauling Institute. Disruptions occur in conditions like human African trypanosomiasis (National Academies Press.

Facts (137)

Sources

What are Cytokines? Types & Function - Cleveland Clinic my.clevelandclinic.org Cleveland Clinic Jan 3, 2023 37 facts

claimInterferons are a type of cytokine that signal cells to defend against invading viruses by interfering with the process that allows viruses to replicate.

claimTumor necrosis factor (TNF) is a cytokine that helps regulate inflammation and signals immune cells to kill tumor cells.

claimCytokine release syndrome (CRS), also called a cytokine storm, is a condition that may develop if the immune system releases too many cytokines in response to an infection or treatments like immunotherapy.

claimCytokines allow the immune system to mount a defense when germs or other harmful substances enter the body.

claimCytokines can signal cells through endocrine signaling, where cytokines bind to receptors on cells located far away from the cell that released the cytokines.

claimLymphokines are a type of cytokine produced by lymphocytes, which are a type of white blood cell.

claimInterleukins are a type of cytokine named from 'inter' (between) and 'leukocyte' (white blood cell), though it is now known that cells other than leukocytes release them and they can relay messages between non-leukocyte cells.

claimCytokines are essential components of a healthy immune system.

claimHigh levels of cytokines can cause excessive inflammation that is potentially harmful if left untreated.

claimCytokines send signals to other cells to maintain immune system function even when no specific threat is present.

claimCytokines can signal body cells to release additional cytokines to increase the body's inflammatory response.

claimCytokines signal cell differentiation by instructing immature cells to develop into specific cell types, such as instructing an immature cell to mature into a white blood cell capable of fighting infection.

claimNon-immune cells that release cytokines include endothelial cells (lining blood vessels), epithelial cells (lining organs), fibroblasts (connective tissue), stromal cells (connective tissue), and Schwann cells (surrounding neurons).

claimCytokines signal cell activation by directing immune cells toward infection sites to fight germs and by heightening or lessening processes associated with inflammation.

claimCytokines are essential components of a healthy immune system, as they act as signaling molecules that help maintain an infection-free state when present in the correct amounts.

claimA cytokine panel is a blood test used by healthcare providers to check cytokine levels and determine if the body is producing too many or too few cytokines.

claimImmune cells, also known as white blood cells or leukocytes, release most of the body's cytokines, though many other cell types also release them.

claimCytokines are signaling proteins that help control inflammation in the human body.

claimHealthcare providers can test blood samples for cytokines to assess levels of inflammation in a patient.

claimCytokines signal cell proliferation by instructing a cell to replicate itself, such as telling a white blood cell to produce more white blood cells to fight infection.

claimInterleukins are a type of cytokine that relays messages between cells, including cells that are not leukocytes.

claimCytokines are chemical messengers that regulate inflammation in the body by signaling cells on how to behave, including directing cell activation, differentiation, and proliferation.

claimImmune cells that release cytokines include macrophages, dendritic cells, lymphocytes (T and B lymphocytes), monocytes, neutrophils, basophils, eosinophils, and mast cells.

claimChemokines are a type of cytokine that direct immune cells toward locations in the body where they can fight infection.

claimCytokines can signal cells through three primary mechanisms: autocrine signaling (binding to receptors on the same cell that released them), paracrine signaling (binding to receptors on nearby cells), and endocrine signaling (binding to receptors on cells located far away from the cell that released the cytokines).

claimCytokines function as chemical messengers that signal immune cells to fight invading pathogens such as viruses and bacteria.

claimThe presence of the right amount of cytokines, signaling correctly, helps keep an individual infection-free.

referenceShi J, Fan J, Su Q, and Yang Z authored 'Cytokines and abnormal glucose and lipid metabolism', published in Front Endocrinol (Lausanne) on October 30, 2019.

claimCytokines can signal cells through paracrine signaling, where cytokines bind to receptors on nearby cells.

claimCytokine signaling functions via a lock-and-key mechanism where a cytokine acts as a key and a receptor on a receiving cell acts as a lock; when the cytokine binds to the receptor, the cell receives instructions and acts on them.

claimElevated levels of cytokines in the blood may indicate heightened inflammation, which might require medical treatment.

claimCytokines function as chemical messengers within the immune system, which is a network of parts that protects the body from threats like viruses and bacteria.

claimColony-stimulating factors (CSF) are cytokines that signal hematopoietic stem cells to develop into specific cell types.

claimCytokines can signal cells through autocrine signaling, where cytokines bind to receptors on the same cell that released them.

claimMonokines are a type of cytokine produced by monocytes, which are a type of white blood cell.

claimCytokines travel through the bloodstream or directly into tissue until they reach a cell with a matching receptor to deliver instructions.

claimExcessive levels of cytokines can lead to excess inflammation and conditions such as autoimmune diseases.

Immunity In Depth | Linus Pauling Institute lpi.oregonstate.edu Linus Pauling Institute 16 facts

claimWhen a bacterium binds to surface receptors on a macrophage, it simultaneously triggers intracellular signaling that activates the transcription of pro-inflammatory cytokine genes in the nucleus, leading to the production and secretion of cytokines that act on nearby cells.

claimAdipose tissue secretes fatty acids and adipocytokines (adipokines), such as hormones and cytokines, which trigger inflammatory processes.

claimCytokines secreted by immune cells during the early stages of inflammation stimulate the liver to synthesize acute-phase proteins.

claimVitamin B6 is required for the endogenous synthesis and metabolism of amino acids, which are the building blocks of proteins such as cytokines and antibodies.

measurementA randomized controlled trial in 93 young men (ages 18 to 42 years) found that 12 weeks of daily supplementation with up to 4 g of EPA and 0.9 g of DHA had no effect on NK cell activity, T lymphocyte proliferation, or cytokine production.

claimProbiotics mediate immune effects by altering cell-signaling cascades that modify the expression of cytokines and other proteins.

claimSoluble factors in the innate immune system include the complement system, acute-phase proteins, and messenger proteins called cytokines.

claimSelenium plays a role in regulating the production of cytokines and eicosanoids that orchestrate the immune response.

claimCytokines are chemical messengers that regulate the immune response, with some, such as certain interferons, directly fighting pathogens like viruses.

claimPhagocytic leukocytes produce and release cytokines, including interferons that possess antiviral activity.

claimDHA supplementation alone had no effect on NK cell activity, T lymphocyte proliferation, neutrophil, monocyte, or macrophage numbers, respiratory burst, or cytokine production in healthy older adults.

claimProtein-energy malnutrition (PEM) is associated with reduced production of certain cytokines and complement proteins, as well as impaired phagocyte function within the innate immune system.

claimAltered cytokine production caused by zinc deficiency can contribute to oxidative stress and inflammation.

claimSoluble factors, including cytokines, are responsible for recruiting phagocytic cells to local areas of infection.

measurementIn a randomized, double-blind, placebo-controlled trial involving 46 healthy older adults (ages 55 to 75 years), daily supplementation with 720 mg of EPA and 280 mg of DHA for 12 weeks had no effect on the numbers of neutrophils, monocytes, or macrophages, nor did it affect respiratory burst or the production of cytokines TNF-α, IL-1β, and IL-6.

claimVitamin B6 deficiency impairs aspects of adaptive immunity, including both humoral and cell-mediated immunity, specifically affecting lymphocyte proliferation, differentiation, and maturation, as well as cytokine and antibody production.

Pro-Inflammatory Cytokines Overview | Thermo Fisher Scientific - US thermofisher.com Thermo Fisher Scientific 13 facts

claimUnlike hormones, cytokines are not stored in glands as pre-formed molecules but are rapidly synthesized and secreted mostly after stimulation.

referenceIL-4 is classified as an adaptive immunity cytokine, is produced by Th cells, binds to the CD124 receptor, targets B cells, T cells, and macrophages, and functions in the proliferation of B and cytotoxic T cells, enhancement of MHC class II expression, and stimulation of IgG and IgE production.

referenceIL-2 is classified as an adaptive immunity cytokine, is produced by Th1 cells, binds to the CD25 receptor, targets activated T cells, B cells, and NK cells, and functions in the proliferation of B cells and activated T cells, and supports NK cell function.

claimCytokines are categorized into interleukins (IL), chemokines, interferons, and tumor necrosis factors (TNF).

claimCytokines are small secreted proteins that act as key modulators of inflammation and are produced in response to invading pathogens to stimulate, recruit, and proliferate immune cells.

referenceIL-5 is classified as an adaptive immunity cytokine, is produced by Th2 cells and mast cells, binds to CDw125 and CD131 receptors, targets eosinophils and B cells, and functions in B-cell proliferation and maturation, and the stimulation of IgA and IgM production.

claimIL-6 is a pleiotropic cytokine that regulates cell growth, gene activation, proliferation, survival, and differentiation across various biological systems.

referenceIL-9 is classified as an adaptive immunity cytokine, is produced by T cells, binds to IL-9R and CD132 receptors, targets T cells, and functions in growth and proliferation.

claimImmune cells communicate via cytokines, which control cell proliferation, differentiation, and function, and are involved in inflammation, hematopoiesis, neurogenesis, embryogenesis, and oncogenesis.

claimCytokines frequently affect the action of other cytokines in an additive, synergistic, or antagonistic manner.

referenceIL-3 is classified as an adaptive immunity cytokine, is produced by T cells, binds to CD123 and CDw131 receptors, targets stem cells, and functions in the proliferation and differentiation of hematopoietic precursors.

referenceIL-7 is classified as an adaptive immunity cytokine, is produced by bone marrow stromal cells and epithelial cells, binds to the CD127 receptor, targets stem cells, and functions as a B and T cell growth factor.

claimChemokines are cytokines with chemotactic activities, classified into four main subfamilies: CXC, CC, CX3C, and XC.

Chronic Inflammation - StatPearls - NCBI Bookshelf ncbi.nlm.nih.gov National Library of Medicine 9 facts

claimUpon activation, leukocytes release additional cytokines and mediators of inflammation.

claimLymphocytes, including T-lymphocytes and B-lymphocytes, mediate inflammation by secreting cytokines, costimulating other lymphocytes, and producing antibodies and immune complexes.

claimNeutrophils destroy antigens through phagocytosis and the release of reactive oxygen species and cytokines, including IL-1, IL-6, and TNF-α.

claimEnergy expenditure through physical exercise lowers multiple pro-inflammatory molecules and cytokines in human clinical trials, independently of weight loss.

claimTissue macrophages and dendritic cells contribute to antigen clearance through phagocytosis, the release of cytokines, and by serving as antigen-presenting cells to lymphocytes.

claimIn response to foreign or self-antigens, tissue immune cells like macrophages and dendritic cells release cytokines such as IL-1 and TNF-α.

claimThe cytokines IL-1 and TNF-α induce injury-site endothelial cells to release Selectins and Integrins, which stimulate chemotaxis and diapedesis of circulating leukocytes.

claimIn response to foreign or self-antigens, tissue immune cells like macrophages and dendritic cells release cytokines such as IL-1 and TNF-α, which induce endothelial cells at the injury site to release Selectins and Integrins to stimulate leukocyte chemotaxis and diapedesis.

claimOnce circulating leukocytes enter a local injury site, they are activated by cytokines and chemokines secreted by macrophages and dendritic cells, subsequently releasing their own cytokines and mediators of inflammation.

Parts of the Immune System | Children's Hospital of Philadelphia chop.edu Children's Hospital of Philadelphia 8 facts

claimMacrophages play a critical role in activating other parts of the immune system by secreting chemical signals called cytokines after ingesting a pathogen.

claimCytokines are small proteins that guide immune responses by binding to cell surface receptors, triggering actions such as cell growth, change, reproduction, or interaction with other cells.

claimCell sensitivity to cytokines depends on the specific receptors present on the cell surface.

claimMacrophages activate other parts of the immune system by secreting chemical signals called cytokines after ingesting a pathogen, which recruits other immune cells to the area and leads to inflammation.

claimCytokines can cause cells to grow, change, reproduce, or interact with other cells.

claimReceptors are markers on cell surfaces that allow specific cytokines to bind to the cell.

claimThe secretion of cytokines by macrophages recruits other immune cells to the area, which leads to inflammation.

measurementScientists have identified more than 50 different kinds of cytokines.

3. The Innate Immune System - Immunopaedia immunopaedia.org.za Immunopaedia 8 facts

claimWithin hours of activation, mast cells synthesize chemokines (CCL3, CCL4, and CCL5) and cytokines (TNF-α, IL-4, IL-5, and IL-6).

claimMast cells originate in the bone marrow and circulate as CD34+ progenitor cells, differentiating into mature mast cells only after entering tissues under the influence of cytokines.

claimMacrophages function in adaptive immune responses as antigen-presenting cells and as targets for cellular and humoral adaptive responses, where they are activated by T cell-derived cytokines and antibodies.

claimCytokines produced by macrophages have systemic effects: IL-1 induces fever, TNF-alpha causes wasting (cachexia), IL-6 induces liver production of acute phase proteins, and IL-3 increases neutrophil maturation and release from bone marrow.

claimMacrophages perform several defense functions: phagocytosis and killing of microorganisms/infected cells/tumor cells via PAMP recognition, scavenging debris/apoptotic bodies, antigen presentation to T cells, releasing cytokines/chemokines, and regulating immunity via the alternatively activated pathway.

referenceEosinophils participate in acute and chronic inflammatory reactions, particularly in allergic diseases, by producing leukotrienes (LT), platelet-activating factor (PAF), and cytokines including granulocyte-macrophage colony-stimulating factor (GM-CSF), IL-3, IL-5, IL-6, IL-8, TNF-α, and TGF-β.

claimNatural Killer T (NKT) cells are considered part of the innate immune response because they act swiftly during infections to kill microorganisms or cells and produce cytokines without requiring the slower differentiation or proliferative processes associated with T and B cells.

claimMacrophages produce major cytokines including TNF-alpha, IL-1 beta, IL-6, IL-8, and IL-33.

Extent and Health Consequences of Chronic Sleep Loss and ... - NCBI ncbi.nlm.nih.gov Colten HR, Altevogt BM · National Academies Press 6 facts

claimRadomski et al. (1994) observed disruptions in the secretion of cortisol, prolactin, and certain cytokines in patients suffering from human African trypanosomiasis.

claimWeyerbrock et al. (1996) investigated the effects of light and chronotherapy on human circadian rhythms, specifically examining cytokines, cortisol, growth hormone, and the sleep-wake cycle in patients with delayed sleep phase syndrome.

referenceKonsman et al. (2002) reviewed the mechanisms and implications of cytokine-induced sickness behavior.

claimHuman African trypanosomiasis patients experience disruptions in the secretion of cortisol, prolactin, and certain cytokines, as reported in the Bulletin de la Societe de Pathologie Exotique in 1994.

claimCytokines used as biotherapy adjuncts, specifically interferon, interleukin-2, and tumor necrosis factor, are associated with side effects including daytime sleepiness, disturbed sleep, and depression.

claimWeyerbrock, Timmer, Hohagen, Berger, and Bauer studied the effects of light and chronotherapy on human circadian rhythms, specifically examining cytokines, cortisol, growth hormone, and the sleep-wake cycle in patients with delayed sleep phase syndrome.

How the Immune System Works with Primary Immunodeficiency igcares.com IGCares 4 facts

claimThe major proteins of the immune system are signaling proteins (cytokines), antibodies, and complement proteins.

claimWhen a cell is infected by a virus, the cell releases cytokines to alert other cells to the infection, which generally prevents those other cells from becoming infected.

claimCytokines are small proteins that serve as hormones for the immune system and represent its communication network, produced in response to a threat.

claimImmune system cells communicate either by directly touching each other or by secreting cytokines that act on other cells locally or at a distance.

Why Is Sleep Important for Our Mental and Physical Health? insightspsychology.org Insights Psychology Oct 29, 2024 4 facts

claimThe immune system releases proteins called cytokines during sleep, which help combat infections, inflammation, and stress.

claimInsufficient sleep causes a decrease in the production of protective cytokines, which leaves the body more susceptible to illness.

claimInsufficient sleep leads to a decrease in the production of protective cytokines, increasing susceptibility to illness.

claimThe human immune system releases proteins called cytokines during sleep, which promote sleep and help combat infections, inflammation, and stress.

The Role of Immune Cells in Inflammation jmolpat.com Lukas Freund · Journal of Molecular Pathophysiology 3 facts

claimMonocytes differentiate into macrophages, which are responsible for phagocytosing and clearing cellular debris and dead cells, producing cytokines and chemokines, and promoting tissue repair.

claimEosinophils produce cytokines and chemokines that recruit additional immune cells to the site of inflammation.

claimIn the context of inflammation, T cells produce cytokines that promote tissue repair and regulate the activity of other immune cells.

Wound Healing Phases - StatPearls - NCBI Bookshelf ncbi.nlm.nih.gov National Library of Medicine 3 facts

claimTransforming growth factor and other cytokines play a role in healing, but the optimal timing and dosage for clinical application are still being debated.

claimWhite blood cells and thrombocytes accelerate the inflammatory process by releasing mediators and cytokines.

claimWound healing is a natural physiological reaction to tissue injury that involves a complex interplay between numerous cell types, cytokines, mediators, and the vascular system.

The Good, The Bad and the Ugly of Inflammation medschool.vanderbilt.edu Vanderbilt University Feb 10, 2015 3 facts

claimAstrocyte glial cells normally protect the optic nerve and retina in the visual system, but they can proliferate, enlarge, and over-produce cytokines in response to injury or diseases like glaucoma, leading to the destruction of the optic nerve and retina.

claimWhite blood cells, such as granulocytes and macrophages, act as first responders to sites of infection and injury by emitting chemicals to kill germs and releasing protein messengers called cytokines.

claimFat cells produce cytokines, and as fat tissue grows, it attracts inflammatory cells like macrophages.

Inflammation bioxpedia.com BioXpedia 3 facts

claimCytokines and their receptors participate in diverse biological functions, including innate and adaptive immunity, inflammation, immune cell differentiation, angiogenesis, tumorigenesis, development, neurobiology, and viral pathogenesis.

claimCytokines and chemokines are small signaling proteins secreted primarily by immune cells that coordinate cell growth, proliferation, and differentiation.

claimInflammation is the immune system's primary response to infection and foreign substances, such as bacteria and viruses, involving the release of cytokines from white blood cells into the blood or affected tissues.

The immune system and primary immunodeficiency primaryimmune.org Immune Deficiency Foundation 2 facts

claimThe major proteins of the immune system are cytokines (hormones responsible for communication between immune cells), antibodies (immunoglobulins), and complement proteins.

claimPrimary immunodeficiencies result from a defect in one or more elements or functions of the normal immune system, such as T cells, B cells, NK cells, neutrophils, monocytes, antibodies, cytokines, or the complement system.

Wound Inflammation lakecountyin.gov Lake County Government 2 facts

procedureThe inflammatory response in wound healing proceeds through four key phases: (1) Immediate Response involving vascular changes and increased permeability, (2) Cellular Response involving leukocyte recruitment and phagocytosis, (3) Molecular Signaling involving cytokines, chemokines, and inflammatory mediators, and (4) Resolution of Inflammation involving anti-inflammatory signals and tissue repair.

The Effects of Sleep Deprivation on Your Body - Healthline healthline.com Healthline Aug 23, 2024 2 facts

claimCertain cytokines produced by the immune system help facilitate sleep, which increases the immune system's efficiency in defending the body against illness.

claimThe immune system produces protective, infection-fighting substances like antibodies and cytokines during sleep to combat foreign invaders such as bacteria and viruses.

What is Inflammation? Causes, Effects, Treatment - Harvard Health health.harvard.edu Harvard Health Publishing Mar 27, 2023 2 facts

claimCytokines are small proteins that play an essential role in normal immune responses, but large amounts of cytokines can lead to inflammation.

claimRegular moderate-intensity exercise helps prevent excess weight gain and manages cytokine levels in the body.

The Hidden Dangers of Inflammation—And How to Protect Yourself ... lifetimedentalnwa.com Lifetime Dental NWA Mar 14, 2025 2 facts

claimCytokines are proteins responsible for creating an immune response to fight germs and infections, but an excess of cytokines in the body creates chronic inflammation.

claimExercise helps decrease stress, which is linked to chronic inflammation, and lowers the levels of cytokines in the body.

Understanding chronic inflammation: Causes, symptoms and ... uhc.com UnitedHealthcare 1 fact

claimWhen the body detects an injury or a foreign substance like a virus, it releases inflammatory cells and cytokines to the affected area to eliminate the threat and protect against infection.

Self-awareness, self-regulation, and self-transcendence (S-ART) frontiersin.org Frontiers in Human Neuroscience 1 fact

claimA decreased stress response and rapid return to physiological and emotional baseline involves physiological mediators including catecholamines (epinephrine and norepinephrine), glucocorticoids (cortisol), pituitary hormones (ACTH, prolactin, and growth hormones), and cytokines (IL-1, IL-6, and TNF-α).

A Comprehensive Review on the Therapeutic Properties of ... traditionalmedicine.actabotanica.org Acta Botanica 1 fact

referenceA study published in the 'Journal of Clinical Immunology' reported that curcumin modulates the immune system by regulating cytokine production.

Inflammatory Markers | Choose the Right Test arupconsult.com ARUP Consult Jun 16, 2025 1 fact

claimMarkers of inflammation beyond CRP, ESR, and PCT include serum amyloid A, cytokines, alpha-1-acid glycoprotein, plasma viscosity, ceruloplasmin, hepcidin, and haptoglobin.

What Is Inflammation? Types, Causes & Treatment my.clevelandclinic.org Cleveland Clinic Mar 22, 2024 1 fact

claimThe immune system initiates an inflammatory response by sending inflammatory cells and cytokines to trap germs or toxins and begin healing injured tissue.

Implications for Mental Health and Coping Strategies | OxJournal oxjournal.org oxjournal.org Aug 12, 2024 1 fact

claimPersistent high levels of cortisol suppress the immune system by inhibiting the production of cytokines, which are proteins crucial for regulating the immune response to infections and inflammation (Slavich, 2016).

A Double-Edged Sword: Inflammation and Your Health - Cedars-Sinai cedars-sinai.org Cedars-Sinai Feb 12, 2021 1 fact

claimMacrophages, which are cells whose name means 'big eaters' in Greek, release compounds called cytokines to signal immune reinforcements to a site of injury or infection.

Common and Novel Markers for Measuring Inflammation and ... pmc.ncbi.nlm.nih.gov A Menzel · PMC 1 fact

claimThe most frequently used inflammatory markers include acute-phase proteins, specifically C-reactive protein (CRP), serum amyloid A, fibrinogen, and procalcitonin, as well as cytokines.

Understanding the Inflammatory and Healing Process - Myo-Fit myofittherapy.com MyoFit Therapy Nov 12, 2024 1 fact

procedureThe initial phase of the inflammatory process involves the release of inflammatory mediators, such as histamines, cytokines, and prostaglandins, in response to trauma, overuse, or surgery.

The Center for Inflammation Science and Systems Medicine wertheim.scripps.ufl.edu University of Florida 1 fact

claimInflammatory responses can be confined to specific tissues (such as a joint) or organs (such as the respiratory tract), or they can be systemic, involving inflammatory mediators like cytokines circulating in the bloodstream.