Losartan clinical uses
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Losartan Clinical Uses: Hypertension, Cardiovascular, and Renal Disease
Losartan is primarily used to treat high blood pressure (hypertension), and it is also prescribed for patients with diabetic nephropathy and left ventricular hypertrophy. It works by blocking the interaction of angiotensin II with its receptor, thereby inhibiting the renin-angiotensin system, which helps lower blood pressure and protect the kidneys, especially in people with diabetes. Losartan is effective in controlling blood pressure in high-risk groups, such as renal transplant recipients with arterial hypertension, and is generally well-tolerated, though it may cause side effects like muscle cramps, respiratory infections, cough, hyperkalemia, anemia, and nasal congestion. Drug interactions should be monitored, especially in patients taking multiple medications Tolou_Ghamari2023Wang2023.
Losartan in Eye Diseases: Corneal Scarring and Fibrosis
Recent research has explored the use of topical losartan for preventing and treating corneal scarring fibrosis after injuries such as Descemetorhexis, alkali burns, photorefractive keratectomy, and surgical complications. Both animal studies and early human case reports show that topical losartan can reduce corneal haze and fibrosis, improving visual outcomes. It is being considered for other eye conditions where transforming growth factor beta (TGF-β) plays a role, such as conjunctival fibrotic diseases and certain corneal dystrophies. Dosage and safety are important, with lower concentrations recommended for corneas with epithelial defects to minimize toxicity Wilson2023Pereira-Souza2022Villabona-Martinez2025.
Losartan in Cancer: Tumor Microenvironment and Metastasis
Losartan has shown promise in cancer therapy, particularly in ovarian cancer models. It can remodel the tumor stroma, reduce extracellular matrix content, and improve the delivery and efficacy of chemotherapy drugs like paclitaxel. In preclinical and retrospective studies, patients receiving losartan alongside standard ovarian cancer treatments had improved survival and reduced ascites. Losartan also inhibits monocyte recruitment and the CCL2–CCR2 signaling axis, which can suppress metastasis in cancers such as osteosarcoma and lung metastases. These findings support further clinical trials of losartan as an adjunct in cancer therapy Zhao2019Regan2021Regan2019.
Losartan for Muscle Health: Sarcopenia and Atrophy
Losartan may benefit older adults with sarcopenia, a condition characterized by loss of muscle mass and strength. In animal models, losartan improved muscle remodeling after injury and protected against muscle loss due to immobilization. These effects are linked to its ability to modulate TGF-β and IGF-1/Akt/mTOR signaling pathways, which are critical for muscle homeostasis. This suggests potential clinical benefits for injury-related muscle remodeling and protection against disuse atrophy in humans .
Losartan in Neuropathic Pain
Losartan has demonstrated analgesic effects in animal models of chemotherapy-induced peripheral neuropathy. It reduces pain by decreasing inflammatory cytokines, such as IL-1β and TNF-α, in the dorsal root ganglia. This suggests losartan could be a new or add-on therapy for patients suffering from neuropathic pain due to chemotherapy .
Losartan and Renal Fibrosis
In chronic kidney disease, losartan is effective in reducing renal fibrosis. It achieves this by inhibiting the tumor necrosis factor (TNF) signaling pathway and reducing the expression of fibrosis-related genes. This mechanism adds to its established role in protecting kidney function in patients with hypertension and diabetes .
Conclusion
Losartan is a versatile medication with established uses in hypertension, diabetic nephropathy, and cardiovascular protection. Emerging research supports its potential in treating eye diseases, certain cancers, muscle wasting conditions, neuropathic pain, and renal fibrosis. Ongoing and future clinical studies will help define its broader therapeutic roles and optimal use in these diverse conditions.
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