The lipids are a large and diverse group of naturally occurring organic compounds that are related by their solubility in nonpolar organic solvents (e.g. ether, chloroform, acetone & benzene) and general insolubility in water.hospholipids are the main constituents of cell membranes. They resemble the triglycerides in being ester or amide derivatives of glycerol or sphingosine with fatty acids and phosphoric acid.
As of now, research doesnât clearly indicate a specific cause of rheumatoid nodules and why exactly they develop in some patients and not in others. Given they generally form on extensor joints, rheumatoid nodules could be the result of repeated pressure on the affected joints over time.
Thyroid nodules are growths that form on or in the thyroid gland. The causes are not always known but can include iodine deficiency and Hashimoto's disease. The nodules can be solid or fluid-filled. Most are benign, but they can also be cancerous in a small percentage of cases.he body's systems speed up and cause symptoms that are common to hyperthyroidism when thereâs a high level of thyroid hormone in the bloodstream. Symptoms include: 1  anxiety. 2  irritability. 3  fatigue.