PRACA POGLĄDOWA
Wybrane problemy związane ze środowiskowym narażeniem na metale ciężkie a terapia chelatująca
Więcej
Ukryj
1
Department of Internal Medicine and Hypertension Wroclaw University of Medicine Head: prof. Ryszard Andrzejak, MD, PhD
Autor do korespondencji
Anna Skoczynska
Wrocław University of Medicine
Pasteur 4, PL 50-367 Wrocław, Poland
Med Srod. 2010;13(3):62-67
SŁOWA KLUCZOWE
STRESZCZENIE
Wstęp:
Istotnym aspektem przewlekłej ekspozycji na działanie metali ciężkich jest ich udział w patogenezie chorób o znaczeniu społecznym (nadciśnienia tętniczego, miażdżycy, chorób neuro-degeneracyjnych). W tym kontekście niezbędne są nowe strategie profilaktyczne i terapeutyczne. Osoby z rozpoznaniem przewlekłego zatrucia metalami ciężkimi zazwyczaj wymagają stosowania chelatorów w celu zwiększenia mobilizacji metali z tkanek i eliminacji ich z moczem. Ostre zatrucie metalami toksycznymi może być trudne do zdiagnozowania, szczególnie powstałe przypadkowo lub w celach samobójczych. Po zidentyfikowaniu czynnika sprawczego, pacjenci także wymagają chelatowania.
Cel:
Przedstawienie wybranych problemów związanych z toksycznością metali ciężkich
i przegląd terapii farmakologicznych stosowanych u osób z objawami zatrucia.
Materiał i metody:
Przegląd piśmiennictwa i opinii ekspertów
Wyniki/wnioski:
Chelatowanie jest powszechnym sposobem terapii osób z rozpoznanym zatruciem metalami ciężkimi, ale jest to sposób skuteczny tylko częściowo. Obiecującym sposobem leczenia jest terapia złożona z zastosowaniem chelatorów o różnej budowie lub działających długoterminowo. U pacjentów z objawami przewlekłego zatrucia metalami ciężkimi korzystne jest stosowanie terapii złożonej chelatorem i antyoksydantem. Ekspozycja na działanie ołowiu powinna być czynnikiem uwzględnianym w szacowaniu całkowitego ryzyka sercowo naczyniowego.
Background:
Exposure to heavy metals leads to functional and metabolic disturbances and many of them are included in pathogenesis of common diseases (arterial hypertension, atherosclerosis, neurodegenerative processes). In this context new therapeutic and prophylactic strategies are necessary. Patients diagnosed with chronic heavy metals intoxication usually require chelation to increase mobilisation of metals from tissues and elimination of them via urine. Acute poisoning with toxic metal may be difficult to diagnosis, especially in case of accidental intoxication or suicidal intention. Patients also require chelation after causative factor is identified.
Objectives:
To describe some problems connected with toxicity of metals poisoning and to review pharmacologic therapies that could have a role in poisoning with metals.
Methods:
A review of the literature was carried out and expert opinion expressed.
Results/conclusion:
Chelation is a common therapy in case of poisoning with toxic metals but it is satisfied
only partially. A combined therapy with structurally different chelators or long-term acting chelators could become viable alternatives in the future. A combined therapy with an antioxidant plus chelator may be a good choice in patients chronically poisoned with metals. Exposure to lead should be taken into account during estimation of global cardiovascular risk.
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