Blood estrogen transport

Transferrin 8-9 Binds iron in plasma and transports iron to bone Iron deficiency, pregnancy, hypoxia, chronic blood loss, estrogens Chronic infection, cirrhosis, burns, enteropathies, nephrotic syndrome, cortisone, testosterone... 

Oral contraceptives have been used widely by women since the 1960s and most contraceptive pills contain various ratios of estrogenic and progestomi-metic substances. Hormone replacement therapy (HRT) has evolved considerably in the composition and doses utilized in the treatment of postmenopausal women, during the past four decades. While pharmaceutical compounds exhibiting estrogen mimicry are structurally diverse, they share common properties such as their retention in body fat deposits, their ability to cross the placental barrier, their transport in blood usually bound to serum proteins, and their affinity for the estrogen receptor protein. 

In humans, riboflavin, FAD and FMN are transported in blood plasma mainly through weak associations with albumin and some immunoglobulins. Other riboflavin-binding proteins are specific to pregnancy, including the classic case of the estrogen-induced egg-white protein. These proteins have at... 

Although cholesterol has a bad reputation, it serves many important ftmctions in the body. Like phospholipids and giycolipids, cholesterol is part of cell membranes. Cholesterol also serves as a starting material (or precursor) for the body to synthesize other steroids such as testosterone, a principal male hormone, and estrogen, a principal female hormone. Hormones are chemical messengers that regulate many body processes, such as growth and metabolism. They are secreted by specialized tissues and transported in the blood. 

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