Osteoporosis Treatment: Pharmacology in Rehabilitation
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Questions and Answers

What is the primary function of 1, 25 (OH)2 D in bone mineral homeostasis?

  • Stimulates intestinal uptake of calcium and phosphate and promotes bone formation (correct)
  • Inhibits PTH production
  • Inhibits bone formation
  • Regulates osteoclast activity

Which of the following hormones inhibits bone resorption?

  • Vitamin D
  • Calcitonin (correct)
  • Parathyroid hormone
  • Estrogen

What is the effect of vitamin D deficiency on bone formation?

  • Bone formation is stimulated
  • Bone resorption is inhibited
  • Bone formation is impaired (correct)
  • Bone density is unaffected

Which cell type produces RANKL, stimulating preosteoclast differentiation?

<p>Osteoblasts (A)</p> Signup and view all the answers

What is the outcome of increased osteoclast activity due to high PTH levels?

<p>Hyperparathyroidism (C)</p> Signup and view all the answers

Which of the following is a secondary regulator of bone mineral homeostasis?

<p>Glucocorticoids (C)</p> Signup and view all the answers

What is the mechanism of action of bisphosphonates in treating osteoporosis?

<p>Inhibiting bone resorption by inhibiting osteoclast function (A)</p> Signup and view all the answers

What is the effect of food and other medications on the absorption of oral bisphosphonates?

<p>They significantly interfere with the absorption of oral bisphosphonates (C)</p> Signup and view all the answers

What happens to bisphosphonates once they are bound to bone?

<p>They are cleared over a period of hours to years (B)</p> Signup and view all the answers

Why should bisphosphonates be avoided in severe renal impairment?

<p>Because the free drug is excreted unchanged by the kidneys (C)</p> Signup and view all the answers

What is the bioavailability of oral bisphosphonates?

<p>Less than 1% of the dose (C)</p> Signup and view all the answers

What is the main treatment for osteoporosis?

<p>Bisphosphonates (A)</p> Signup and view all the answers

What is the primary reason for the decline in bone density in postmenopausal osteoporosis?

<p>Decreased estrogen levels (B)</p> Signup and view all the answers

Which of the following is a common adverse effect of oral bisphosphonates?

<p>Gastrointestinal disturbances (C)</p> Signup and view all the answers

What is the purpose of taking oral bisphosphonates on an empty stomach with a large quantity of water?

<p>To reduce the risk of gastrointestinal side effects (C)</p> Signup and view all the answers

What is the mechanism of action of raloxifene on bone?

<p>It is an estrogen agonist/antagonist that mainly inhibits osteoclasts and bone resorption (D)</p> Signup and view all the answers

What is the bioavailability of raloxifene after oral administration?

<p>2% (A)</p> Signup and view all the answers

What is the alternative treatment option for patients who are unable to tolerate oral bisphosphonates?

<p>Intravenous ibandronate and zoledronate (B)</p> Signup and view all the answers

What is the primary route of excretion for raloxifene?

<p>Faeces (A)</p> Signup and view all the answers

Which of the following is a contraindication for the use of raloxifene?

<p>Venous thromboembolism (D)</p> Signup and view all the answers

What is the mechanism of action of parathyroid hormone analogs?

<p>Stimulating PTH1 and PTH2 receptors (B)</p> Signup and view all the answers

What is the limitation of teriparatide therapy?

<p>Risk of osteosarcoma in rats (B)</p> Signup and view all the answers

What is the effect of low intermittent doses of parathyroid hormone?

<p>Increased bone formation (A)</p> Signup and view all the answers

What is the mechanism of action of denosumab?

<p>Binding to and preventing RANKL (D)</p> Signup and view all the answers

What is the role of RANKL in osteoclast development?

<p>Stimulating preosteoclast differentiation to osteoclast (B)</p> Signup and view all the answers

What is the recommended administration frequency for denosumab?

<p>Every 6 months (B)</p> Signup and view all the answers

Which of the following is a rare adverse effect of denosumab?

<p>Osteonecrosis of the jaw (D)</p> Signup and view all the answers

What is the main preparation of calcitonin?

<p>Salcatonin (synthetic salmon calcitonin) (A)</p> Signup and view all the answers

What is a potential long-term risk associated with calcitonin use?

<p>Increased risk of malignancy (D)</p> Signup and view all the answers

Why was strontium recently withdrawn from the market?

<p>Due to increased risk of CVS events (B)</p> Signup and view all the answers

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