Multiple Sclerosis: The Role of Cytokines and Therapeutic Applications Abstract: Multiple Sclerosis (MS) is a chronic autoimmune neurological disease that debilitates an estimated 2.3 million people worldwide (“What is MS,” n.d.). With no identifiable cause and a cure yet to be discovered, emphasis must be placed on advancing treatments and therapies. Although its pathogenesis is not completely understood, researchers are well aware that the immune response during MS revolves around inflammatory mediators called cytokines. Over the last few decades, substantial progress has been achieved in MS research and knowledge of cytokines in MS has considerably increased, allowing for the development of numerous drugs, including the successful Glatiramer …show more content…
2007). However, in context to the body’s immune response, cytokines are inflammatory molecules that rush to the site of infection or injury with the goal of influencing the inflammation process (Yarlagadda et. al. 2009). During both the innate and adaptive immune responses of MS, the effector function of T cells is significantly altered, as both toll-like receptors and antigen presenting cells trigger T cells to differentiate into Th1, Th2, or Th17 phenotypes. When polarized to these phenotypes, the T cells begin to secrete the pleiotropic cytokines, thus making T cells the predominant producer of cytokines (Loma & Heyman, 2011). Cytokines can be categorized into two broad categories: proinflammatory and anti-inflammatory; many, however, evidently share properties from both groups. While proinflammatory cytokines, secreted by Th1 and Th17 cells, work to promote inflammation and “launch the immune response,” anti inflammatory cytokines, secreted by Th2 cells, work to counteract the proinflammatory response and “block or dampen the immune response.” (Yarlagadda et. al. 2009). Throughout the course of MS, both proinflammatory and anti inflammatory cytokine levels are upregulated; proinflammatory cytokine levels are greater during relapse and antiinflammatory cytokine levels are greater during remission (Martins et. al 2015) (Amedei et. al. 2012). Despite this knowledge however, it has been found that even proinflammatory cytokines hold protective properties, as inflammation is a protective mechanism (T. Makar, Interview, December 22, 2016). Therefore, both categories of cytokines are vital to the immune response. However, attempting to restore the balance between the two during a relapse may reduce the intensity and duration of the
Multiple sclerosis (MS) is a disease affecting the myelination of the central nervous system, leading to numerous issues regarding muscle strength, coordination, balance, sensation, vision, and even some cognitive defects. Unfortunately, the etiology of MS is not known, however, it is generally thought of and accepted as being an autoimmune disorder inside of the central nervous system (Rietberg, et al. 2004). According to a study (Noonan, et al. 2010) on the prevalence of MS, the disease affects more than 1 million people across the world, and approximately 85% of those that are affected will suffer from unpredictably occurring sessions of exacerbations and remissions. The report (Noonan, et al. 2010) found that the prevalence of MS was much higher in women than in men, and that it was also higher in non-Hispanic whites than in other racial or ethnic groups throughout the 3 regions of the United States that were studied.
Around the world, many people are living with neurologically debilitating disorders like multiple sclerosis. Multiple sclerosis is best described as a pathological “inflammatory-mediated demyelinating disease of the human central nervous system,” and affects more than 2.5 million people globally (Trapp & Nave, 2008).
So what is happening chemically to the people with MS? The disease is an Autoimmune which this will destroy the cells which are in your body. The immune system is going to attack the tissue which it is going to affect the Myelin. When the Myelin is damaged which is when the T cells over react , and cause them to damaged. That is what happens Chemically with MS people.
Multiple sclerosis is a chronic degenerative disease of the central nervous system, in which the myelin that covers the nerves is somehow eaten away and scar tissue for multiple sclerosis in its place, interrupting the nerve’s signals. This disease has an unpredictable and uncontrollable course which leads to the loss of vision, hearing, speech, the ability to walk, control of bladder and bowels, sensitivity to touch, vibration and pain, potency and coordination of movements. The list of possibilities is lengthy and horrifying.
Just like lupus, Multiple sclerosis is a chronic immune system disease that affects the central nervous system. The cause of this condition is unknown; however, some of the causes are violent trauma to the head or spinal cord, and or an immune system attack, which causes the body to attack the myelin sheaths around the neurons in the ascending and descending pathways and most of all genetic and environmental factors. Rosner (2008) notes that, multiple sclerosis is the common cause ...
According to National Multiple Sclerosis Society, Multiple Sclerosis (MS) is an unpredictable, often disabling disease of the central nervous system (CNS) that disrupts the flow of information within the brain, and between the brain and body. The central nervous system (CNS) comprises of the brain and the spinal cord. CNS is coated and protected by myelin sheath that is made of fatty tissues (Slomski, 2005). The inflammation and damage of the myelin sheath causing it to form a scar (sclerosis). This results in a number of physical and mental symptoms, including weakness, loss of coordination, and loss of speech and vision. The way the disease affect people is always different; some people experience only a single attack and recover quickly, while others condition degenerate over time (Wexler, 2013). Hence, the diagnosis of MS is mostly done by eliminating the symptoms of other diseases. Multiple sclerosis (MS) affects both men and women, but generally, it is more common in women more than men. The disease is most usually diagnosed between ages 20 and 40, however, it can occur at any age. Someone with a family history of the disease is more likely to suffer from it. Although MS is not
Multiple Sclerosis (MS) is a complicated chronic deteriorating disease that has an effect on the central nervous system (CNS). This disease causes destruction of the myelin around the nerve fibers. “The exact etiology of Multiple Sclerosis is unknown; however, it is thought to be an immune mediated disease. MS is characterized by CNS inflammation, demyelination, and axonal loss” (Compston & Coles, 2008). Typically, it is described by early relapses and remissions of neurological signs of the CNS. This is known as relapsing-remitting MS (RRMS). MS can be identified by a variety of known risk factors. Multiple Sclerosis can be brought on by a mixture of inherited and environmental risk factors such as smoking or an exposure to a virus like Epstein Barr. The inflammatory process has an interesting role on the central nervous system.
Primarily, the term MS refers to a chronic disorder that attacks the central nervous system (CNS). It is most common in temperate continents such as Europe and Australia with Asiatic and African continents having a lower risk of the disease (Wiley Online Library, 2013). A search organised by the Multiple Sclerosis Society (2013) has estimated that there are 127,000 people living with MS in the United Kingdom. Further research by Chipps, Clanin, and Campbell (1992, pp. 158-167) shows that MS disorder more likely affects women than men with its symptoms occurring between the ages of 20 and 40 in most cases and is quite uncommon in childhood and old age. The nerve cells known as neurons in the brain constantly transmit and receive signals. They invoke emotions, activities and cognition that constitute the day to day experiences of humans. Under normal circumstances, these signals travel on a protected insulation path known as the myelin sheath. This insulation is vital as it enables signals to reach their target. In Multiple Sclerosis, the myelin sheath gets disintegrated causing the nerve fibre to be damaged leading to a disruption in the abili...
Multiple sclerosis is a chronic inflammatory autoimmune disease of the central nervous system, directed against the myelin sheath. Leading to demyelination and axonal loss. It’s characterized by spread “plaques” of demielinization typically found in typically found on MRI in the periventricular region, corpus callosum, centrum semiovale and, to a lesser extent, deep white – structures and basal ganglia.(Olek, 2005)
... resulting impairment to the CNS. The first group of mice exhibited a pattern of CNS inflammation that resembled that of the most common subtype of MS, RRMS, with lesions filled with macrophages, a type of immune defender cell. The second group of mice displayed inflammation deep in the CNS tissues and in the optic nerve with lesions filled with neutrophils, another type of immune cell. Both groups of mice were given antibody drugs similar to drugs being developed against MS in humans. The effects were observed over time and results showed that some of the drugs inhibited disease in the first group of mice but did not inhibit disease in the second group. Thus, as Mark Kroenke (2008), the study’s first author and a Ph.D. student in immunology at U-M stated, "That's our proof that these really are different mechanisms of disease" (Kroenke et al., 2008).
It is also estimated that approximately two and half million people are living with the disease... The name multiple sclerosis refers to the scars that are present in the brain and spinal cord is seen on an MRI. An autoimmune disorder is where a person’s immune system mistakes its own white blood cells as invaders and begins to attack itself damaging healthy body tissue. In these types of disorders, the immune system cannot tell the difference between healthy cells and antigens, which are foreign invaders like bacteria and viruses. Because of the damage, it does to the nerve cells; nerve signals can either slow down or stop completely. Inflammation, or the body’s reaction to infection, is what causes this nerve damage to happen. Multiple sclerosis is most commonly seen in the brain, optic nerve, and spinal cord and often leads to physical and cognitive
Multiple Sclerosis is a nervous system disease that affects the spinal cord and the brain by damaging the myelin sheaths that protects nerve cells. Destroyed myelin prevents messages from communicating and sending properly from the brain, through the spinal cord, to internal body parts. In the United States, more than 350,000 people are diagnosed with this disease. Anyone can get this disease, but it is more common among Caucasian women. MS symptoms begin between the ages 20-40 and are caused by nerve lesions being present in multiple areas of the Central Nervous System, symptoms differ on the lesion’s location.
Multiple Sclerosis (MS) is a chronic, progressive, unpredictable disease that affects the central nervous system. It is thought to be an immune-mediated disorder, MS causes the immune system to attack the healthy tissue in the central nervous system. This particular disease is most common further from the equator, in places such as North America, Southern parts of Australia, and Northern Europe. Some researchers believe if you live close to the equator, your chances of developing MS significantly decreases. This is due to high levels of vitamin D, also known as the sunshine vitamin. Multiple Sclerosis can affect any age group, but is most common in people aged 20-50. Children as young as 2 can be diagnosed. Women are more susceptible to developing MS than men
Multiple Sclerosis (MS) is a debilitating autoimmune disease. The Central Nervous System (CNS) is attacked by the immune system; creating lesions that interrupt the correct signaling of nerves, spinal cord, and brain (Frankel, & James, 2011). Inhibiting development of this disease is crucial for maintaining quality of life and fatigue for individuals with MS. There has been vast amount of research on the effect of various exercise training programs, and their benefits for MS (Motl, & Gosney, 2008, Krupp, 2003, Chen, Fan, Hu, Yang, & Li, 2013). Balance, aerobic, and strength training have been the main focus of most researchers; causing an interest in what training mode is most effective for improving quality of life and lower fatigue. It is critical to examine and contrast the effectiveness of a variety of exercise programs, because if training is completed effectively it can drastically improve quality of life and fatigue for individuals with MS.
The location of the inflammation or lesions in the brain may be able to determine the symptoms of a person with MS. The primary features of MS consist of voluntary tremor, ataxic dysarthria, and involuntary eye movement. Presently, there is no cure for MS, but there are various non- pharmacological and pharmacological treatment to help manage the relapses, exacerbations, preventing the increased disability, modifying/ controlling the progression of the disease process and for treating the symptoms of the illness (National Multiple Sclerosis Society, n.d.). The physiotherapist has an important role to our patients in maintaining their function, providing education and formulate numerous diverse strategies for effective physical therapy treatment and patient’s safety due to different MS drug cycles and its side