Varying Functions Of Eicosanoids Biology Essay

Eicosanoids are usually known for their functions in redness. This is due to the small information available on such molecules because of their province of being. These molecules contain a lifetime of usually merely a few seconds. However, beyond redness, farther research has shown these molecules to work in cell proliferation, tissue fix, blood curdling, blood vas permeableness, vessel constriction/relaxation, and immune cell behaviour.

Eicosanoids and their maps

Eicosanoids are usually associated with the word “ redness. ” These molecules are non usually good known for their functions in anything else. Therefore, I hypothesize that ‘Eicosanoids chiefly function in the redness response. ” In order to understand the functions of eicosanoids, it is necessary to understand what they are precisely.

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Eicosanoids are signaling molecules formed by the oxidization of twenty-carbon indispensable fatty acids ( DeCaterina & A ; Basta, 2001 ) . These molecules show a complex control over many bodily systems. Eicosanoidal control exists chiefly with the redness response and immune response, every bit good every bit working as couriers of the cardinal nervous system ( Funk, 2001 ) . The human organic structure greatly depends on these molecules for normal map.

Eicosanoids originate from omega-3 and omega-6 indispensable fatty acids ( DeCaterina & A ; Basta, 2001 ) . Omega-6 eicosanoids are usually proinflammatory ; whereas, omega-3 ‘s are much less so ( DeCaterina & A ; Basta, 2001 ) . The sum and balance of these fats are determined by a individual ‘s diet ( DeCaterina & A ; Basta, 2001 ) . This straight affects the organic structure ‘s eicosanoid controlled maps ( Soberman & A ; Christmas, 2003 ) . These maps have effects on cardiovascular disease, triglycerides, blood force per unit area, and arthritis ( Soberman & A ; Christmas, 2003 ) . Drugs such as acetylsalicylic acid, an anti-inflammatory drug, and other NSAIDs act by downregulating eicosanoid synthesis ( Smith, 1989 ) .

There are four types of eicosanoids, each of which has two or three separate series of which is derived from an Omega-3 or Omega-6 indispensable fatso acid ( DeCaterina & A ; Basta, 2001 ) . These four chief types are known as the prostaglandins, prostacyclins, the thromboxanes, and the leukotreines ( DeCaterina & A ; Basta, 2001 ) . Each series of the chief types have different maps in the organic structure, which explains the huge wellness benefits of the omega-3 and omega-6 fats.

Eicosanoid production occurs from two households of enzymes known as Cox and lipoxygease ( DeCaterina & A ; Basta, 2001 ) . For illustration, Cox is involved in the creative activity of prostanoids. Another illustration is that of an enzyme called 5-lipoxygenase, which creates leukotrienes. The ensuing eicosanoid production is non stored in cells, but synthesized as needed ( DeCaterina & A ; Basta, 2001 ) .

Ecosanoids are formed chiefly by arachidonic acid that has been released from the cell membrane phospholipids. This release occurs from the enzyme phopholipase-A2. This enzyme is usually participates in the care of cellular membranes. However, this enzyme can be found in larger sums by the triggers involved in originating or go oning redness. The release of arichidonic acid by the enzyme can be halted by the consumption of corticoid drugs ( Dharmananda, 2003 ) .

Most drug interventions that focus on painful redness block the production of eicosanoids after the arachidonic acid has already formed. The most normally used drugs are used to suppress the Cox enzymes and recent surveies have shown this to be the chief function in over the antagonistic anti-inflammatory drugs ; i.e. , acetylsalicylic acid, Datril, and isobutylphenyl propionic acid ( Smith, 1989 ) .

All information on eicosanoids and their relationship in redness and chronic diseases is highly complex and invariably germinating. Eicosanoids are really hard to analyze make to their variable life spans of a disconnected second to a few proceedingss. They have been referred to in surveies as ‘local ‘ endocrines ( Smith, 1989 ) . This construct originated with the surveies of Ferreira and Vane ( Ferreira & A ; Vane, 1967 ) . These two demonstrated that introduced Prostaglandin-E and Prostaglandin-Fx derived functions were unable to do a individual base on balls through the circulatory system. Their surveies supported the theory that eicosanoid synthesis is non restricted to a cardinal hormone organ, but that synthesis occurs in most variety meats ( Ferreira & A ; Vane, 1967 ) . This supports their broad array of maps.

Research has shown each group of eicosanoids has both good and bad effects. Prostaglandins, for illustration, chiefly consequence the influencing of thrombocyte collection and the bottleneck or relaxation of blood vass. Some prostaglandins show favourable effects, such as sing the unity of the stomachic liner, ordinance of kidney map, and some besides play critical functions in phases of childbearing. However, some show negative effects, such as increasing the feeling of hurting, doing muscular cramping, and curtailing blood flow. These eicosanoids, chiefly prostaglandin-E2, are involved in redness ( Dharmananda, 2003 ) .

The thromboxanes are created by thrombocytes. These eicosanoids enhance thrombocyte collection, every bit good as doing the bottleneck of blood vass and bronchioles. This group is chiefly known for their negative impacts on the organic structure ; particularly cardiovascular wellness and their part to asthma. On the positive side, they start an immediate response to hurts in order to restrict blood loss ( Dharmananda, 2003 ) .

The leukotreines are created by immune system cells. They stimulate the production of the immune system signaling molecules ; i.e. , interleukins, interferons, and other substances involved in anaphylactic reactions. These eicosanoids have largely known for their portion in allergic reactions and autoimmune diseases ( Dharmananda, 2003 ) .


Eicosanoids are chiefly studied for their functions in redness. However, their map in the human organic structure goes far beyond that. With these molecules being highly difficult to analyze, due to their really short lifetime of a disconnected second to a twosome proceedingss, really small is known of these molecules ( McMurray, 1982 ) . What research has been done on these molecules has shown them to hold a larger figure of functions in the human organic structure than usually focuses on. Besides redness, eicosanoids map in cell proliferation, tissue fix, blood curdling, blood vas permeableness, vessel constriction/relaxation, and immune cell behaviour ( Wallace, 2002 ) .


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