Best answer: Why osteoporosis occurs in glucocorticoid excess?


Why do glucocorticoids cause osteoporosis?

Causes and Risk Factors

Corticosteroids tend to both reduce the body’s ability to absorb calcium and increase how fast bone is broken down. The more of these drugs you take and the longer you take them, the greater your risk of developing osteoporosis.

Do glucocorticoids increase osteoporosis?

Glucocorticoid-induced osteoporosis is the most common cause of secondary osteoporosis, and the degree of bone loss is related to the dose of glucocorticoids and the duration of the exposure.

How do glucocorticoids affect bone density?

Glucocorticoids decrease the function of the remaining osteoblasts directly and indirectly through the inhibition of insulin-like growth factor I expression. The stimulation of bone resorption is likely responsible for the initial bone loss after glucocorticoid exposure.

Is osteoporosis a side effect of glucocorticoids?

Bone loss is one of the most important side effects of glucocorticoid use, even in low doses. The main effect of glucocorticoids on bone is inhibition of osteoblast function, leading to a decrease in bone formation.

What are the two medications that may cause osteoporosis after long term use?

The medications most commonly associated with osteoporosis include phenytoin, phenobarbital, carbamazepine, and primidone. These antiepileptic drugs (AEDs) are all potent inducers of CYP-450 isoenzymes.

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How much calcium and vitamin D should I take while on prednisone?

Most doctors recommend 1,000 mg of calcium and 400–800 IU vitamin D per day for the prevention of osteoporosis. Propoxyphene may cause gastrointestinal (GI) upset. Propoxyphene-containing products may be taken with food to reduce or prevent GI upset.

How do you prevent bone loss when taking prednisone?

To protect your bones, do weight-bearing exercise, avoid alcohol and don’t smoke. Taking calcium and vitamin D supplements is another step you can take to help reduce the amount of bone loss caused by corticosteroids such as prednisone.

How does cortisol cause osteoporosis?

And with increased inflammation comes increased cortisol levels, which can wreak havoc on bone health. Here’s how: First, cortisol increases bone resorption. That is, bone density decreases because your body creates osteoclasts — bone-resorbing cells — in greater amounts.

Can steroid cause osteoporosis?

Steroids can lead to bone loss, osteoporosis, and broken bones. When steroid medications are used in high doses, bone loss can happen rapidly. Not all people who take steroid medications lose bone or lose bone at the same rate.

Which bones are the only ones that do not ossify?

At birth, the skull and clavicles are not fully ossified nor are the junctions between the skull bone (sutures) closed. This allows the skull and shoulders to deform during passage through the birth canal.

Do glucocorticoids cause bone loss?

Glucocorticoid therapy is associated with an appreciable risk of bone loss, which is most pronounced in the first few months of use. In addition, glucocorticoids increase fracture risk, and fractures occur at higher bone mineral density (BMD) values than occur in postmenopausal osteoporosis.

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