Interní Med. 2003; 5(5): 218-221

Terapeutická účinnost natrium alendronátu v léčbě osteoporózy

prof. MUDr. Petr Dan Broulík DrSc
III. interní klinika VFN a 1. LF UK, Praha

Keywords: bisphosphonates, osteoporosis, sodium alendronate, compressive fractures, femur neck fractures.

Published: December 31, 2003  Show citation

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Broulík PD. Terapeutická účinnost natrium alendronátu v léčbě osteoporózy. Interní Med. 2003;5(5):218-221.

Osteoporóza je závažný zdravotnický problém odpovědný za miliony nově vzniklých zlomenin ve všech zemích světa. V současné době máme několik léků, které příznivě ovlivňují resorpci kosti. Jde o estrogeny, bisfosfonáty, selektivní modulátory estrogenových receptorů a kalcitonin. Podle amerických a kanadských doporučení k prevenci a léčbě osteoporózy jako léky první linie jsou doporučovány bisfosfonáty a selektivní blokátory estrogenových receptorů. Natrium alendronát má veliké, dvojitě zaslepené a placebem kontrolované studie vyhodnocující účinek na kostní denzitu a, co je nejdůležitější, na výskyt nových fraktur. Bisfosfonáty jsou jediné preparáty, které mají v evidence based medicine studiích prokazané snížení rizika zlomeniny krčku kosti stehenní. Jedna z největších randomizovaných kontrolovaných klinických prospektivních studií byla provedena s natrium alendronátem. Jde o studii FIT (Fracture Intervention Trial) zaměřenou na sledování účinku alendronátu na četnost obratlových a mimoobratlových zlomenin u žen s nízkou kostní hmotou po menopauze. Významným úspěchem je pak týdenní podávání 70 mg dávky a tím výrazné snížení možných vedlejších účinků alendronátu a zvýšené pohodlí pro nemocné. Ochranný účinek natrium alendronátu přetrvává ještě dva roky po skončení jeho podávání a sedmileté podávání natrium alendronátu stále zvyšuje kostní denzitu.

Therapeutic efficacy sodium alendronate in osteoporosis treatment

Osteoporosis is serious medical problem responsible for millions of new fractures in all countries around the globe. Nowadays, we have several drugs available, which favourably influence bone resorption. Estrogens, bisphosphonates, estrogen receptors selective modulators and calcitonin belong there. Along with American and Canadian guidelines for osteoporosis prevention and treatment bisphosphonates and estrogen receptors selective blockers are drugs of choice. Sodium alendronate has large, double blind and placebo-controlled studies evaluating its bone density effects and, first of all, incidence of new fractures. Bisphosphonates are the only drugs, where evidence based medicine studies proved decreased risk of femur neck fractures. One of the largest randomised controlled clinical prospective studies was carried out with sodium alendronate. It is FIT (Fracture Intervention Trial) study centred on follow up of alendronate efficacy on vertebral and extravertebral fractures incidence in females with low bone mass after menopause. A valuable achievement is 70 mg dose one-week administration and thus marked decrease of possible alendronate side effects and increased patient-s comfort. Protective sodium alendronate effect last yet for two years after the end of treatment and 7-year sodium alendronate administration still increases bone density.

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