Multiple Sclerosis
 Research & Development

Description
Multiple sclerosis (abbreviated MS, also known as disseminated sclerosis or encephalomyelitis disseminata) is a disease in which the fatty myelin sheaths around the axons of the brain and spinal cord are damaged, leading to demyelination and scarring as well as a broad spectrum of signs and symptoms. Disease onset usually occurs in young adults, and it is more common in females. It has a prevalence that ranges between 2 and 150 per 100,000. MS was first described in 1868 by Jean-Martin Charcot.

MS affects the ability of nerve cells in the brain and spinal cord to communicate with each other. Nerve cells communicate by sending electrical signals called action potentials down long fibers called axons, which are wrapped in an insulating substance called myelin. In MS, the body's own immune system attacks and damages the myelin. When myelin is lost, the axons can no longer effectively conduct signals. The name multiple sclerosis refers to scars (scleroses—better known as plaques or lesions) in the white matter of the brain and spinal cord, which is mainly composed of myelin. Although much is known about the mechanisms involved in the disease process, the cause remains unknown. Theories include genetics or infections. Different environmental risk factors have also been found.

Almost any neurological symptom can appear with the disease, and often progresses to physical and cognitive disability and neuropsychiatric disorder. MS takes several forms, with new symptoms occurring either in discrete attacks (relapsing forms) or slowly accumulating over time (progressive forms). Between attacks, symptoms may go away completely, but permanent neurological problems often occur, especially as the disease advances.

There is no known cure for MS. Treatments attempt to return function after an attack, prevent new attacks, and prevent disability. MS medications can have adverse effects or be poorly tolerated, and many patients pursue alternative treatments, despite the lack of supporting scientific study. The prognosis is difficult to predict; it depends on the subtype of the disease, the individual patient's disease characteristics, the initial symptoms and the degree of disability the person experiences as time advances. Life expectancy of patients is nearly the same as that of the unaffected population.



The Cannabis Science

Trends Pharmacol Sci. 2009 Aug;30(8):411-20. Epub 2009 Jul 14.

The Endocannabinoid System of the Skin in Health and Disease: Novel Perspectives and Therapeutic Opportunities. Bíró T, Tóth BI, Haskó G, Paus R, Pacher P.
Department of Physiology, University of Debrecen, Research Center for Molecular Medicine, Debrecen 4032, Hungary.
This e-mail address is being protected from spambots. You need JavaScript enabled to view it

The newly discovered endocannabinoid system (ECS; comprising the endogenous lipid mediators endocannabinoids present in virtually all tissues, their G-protein-coupled cannabinoid receptors, biosynthetic pathways and metabolizing enzymes) has been implicated in multiple regulatory functions both in health and disease. Recent studies have intriguingly suggested the existence of a functional ECS in the skin and implicated it in various biological processes (e.g. proliferation, growth, differentiation, apoptosis and cytokine, mediator or hormone production of various cell types of the skin and appendages, such as the hair follicle and sebaceous gland). It seems that the main physiological function of the cutaneous ECS is to constitutively control the proper and well-balanced proliferation, differentiation and survival, as well as immune competence and/or tolerance, of skin cells. The disruption of this delicate balance might facilitate the development of multiple pathological conditions and diseases of the skin (e.g. acne, seborrhea, allergic dermatitis, itch and pain, psoriasis, hair growth disorders, systemic sclerosis and cancer).

PMCID: PMC2757311, PMID: 19608284 [PubMed - indexed for MEDLINE]

DOWNLOAD FULL ARTICLE:  The Endocannabinoid System of the Skin in Health and Disease



Neuropsychiatr Dis Treat. 2008 Oct;4(5):847-53.

Cannabinoids in the Management of Spasticity Associated with Multiple Sclerosis.

Malfitano AM, Proto MC, Bifulco M.
Dipartimento di Scienze, Farmaceutiche, Università degli Studi di Salerno.

The endocannabinoid system and cannabinoid-based treatments have been involved in a wide number of diseases. In particular, several studies suggest that cannabinoids and endocannabinoids may have a key role in the pathogenesis and therapy of multiple sclerosis (MS). In this study we highlight the main findings reported in literature about the relevance of cannabinoid drugs in the management and treatment of MS. An increasing body of evidence suggests that cannabinoids have beneficial effects on the symptoms of MS, including spasticity and pain. In this report we focus on the effects of cannabinoids in the relief of spasticity describing the main findings in vivo, in the mouse experimental allergic encephalomyelitis model of MS. We report on the current treatments used to control MS symptoms and the most recent clinical studies based on cannabinoid treatments, although long-term studies are required to establish whether cannabinoids may have a role beyond symptom amelioration in MS.

PMCID: PMC2626929, PMID: 19183777 [PubMed - in process]

DOWNLOAD FULL ARTICLE:  Cannabinoids in the Management of Spasticity Associated with Multiple Sclerosis.



Endocr Metab Immune Disord Drug Targets. 2008 Sep;8(3):159-72.

Cannabinoids as Therapeutic Agents for Ablating Neuroinflammatory Disease.

Cabral GA, Griffin-Thomas L.
Department of Microbiology and Immunology, Virginia Commonwealth University, School of Medicine, 1101 E. Marshall Street, Richmond, Virginia 23298-0678 USA.
This e-mail address is being protected from spambots. You need JavaScript enabled to view it

Cannabinoids have been reported to alter the activities of immune cells in vitro and in vivo. These compounds may serve as ideal agents for adjunct treatment of pathological processes that have a neuroinflammatory component. As highly lipophilic molecules, they readily access the brain. Furthermore, they have relatively low toxicity and can be engineered to selectively target cannabinoid receptors. To date, two cannabinoid receptors have been identified, characterized and designated CB(1) and CB(2). CB(1) appears to be constitutively expressed within the CNS while CB(2) apparently is induced during inflammation. The inducible nature of expression of CB(2) extends to microglia, the resident macrophages of the brain that play a critical role during early stages of inflammation in that compartment. Thus, the cannabinoid-cannabinoid receptor system may prove therapeutically manageable in ablating neuropathogenic disorders such as Alzheimer's disease, multiple sclerosis, amyotrophic lateral sclerosis, HIV encephalitis, closed head injury, and granulomatous amebic encephalitis.

PMCID: PMC2750822, PMID: 18782012 [PubMed - indexed for MEDLINE]

DOWNLOAD FULL ARTICLE:  Cannabinoids as Therapeutic Agents for Ablating Neuroinflammatory Disease.

 

Cannabis Science Contact Info  |  Telephone: 1 888.889.0888  |  Fax: 1 866.943.5085   |  Email: info@cannabisscience.com