Drug-Induced Hyperlipidemia

EXAMPLES OF DRUGS THAT CAN CAUSE MILD TO MODERATE DEGREES OF DYSLIPIDEMIA:

  1. Beta-blockers

    • Particularly non-selective beta-blockers are known to cause dyslipidemia.

    • These drugs can block beta-1 adrenergic receptors, which decreases heart contraction and may lower heart rate, leading to less cardiac output.

    • Additionally, by blocking beta-2 receptors, they may induce bronchoconstriction, making them unsuitable for patients with asthma.

    • Importantly, these medications also block beta-3 adrenergic receptors located in adipose tissue.

    • Normally, when beta-3 receptors are stimulated, they promote lipolysis (the breakdown of fats).

    • When these receptors are inhibited by beta-blockers, lipolysis is also inhibited, leading to increased fat storage and potential dyslipidemia.

  2. Thiazide diuretics

    • These medications are associated with a 5–15% increase in total serum cholesterol and low-density lipoprotein (LDL) levels shortly after initiation of treatment.

    • However, it is important to note that after prolonged use, most patients' cholesterol and LDL levels tend to return to baseline, indicating a transient effect on lipid levels.

  3. Antiretroviral drugs

    • Recent FDA reports have shown that antiretroviral therapy used for HIV/AIDS can lead to weight gain in patients.

    • This weight gain can occur due to multiple factors, including increased muscle mass resulting from specific drug combinations.

    • Additionally, patients may accumulate increased subcutaneous fat - fat stored beneath the skin - contributing to unwanted changes in body composition.

    • These alterations in fat distribution can negatively impact lipid metabolism and contribute to the risk of dyslipidemia.

  4. Hormonal agents

    • Hormonal therapies, particularly those involving estrogen analogs, have an established link to dyslipidemia.

    • Hormones such as leptin, insulin, sex hormones (like estrogen), and growth hormones can significantly impact appetite regulation, metabolism, and fat distribution in the body.

    • Altering these hormone levels can disrupt normal cholesterol metabolism, potentially leading to imbalances such as hyperlipidemia and other lipid profile abnormalities.

    • Proper management and monitoring of hormone affecting drugs are essential to avoid metabolic disturbances.