Efectos farmacológicos de un análogo de adenosina-3’,5’-monofosfato cíclico sobre útero de ratones: Consideraciones terapéuticas
; Bergoc, Rosa Maria 
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Fecha
12/2005
Editorial
Federación Bioquímica de la Provincia Buenos Aires
Revista
Acta Bioquímica Clínica Latinoamericana
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ISSN
0325-2957
eISSN
1851-6114
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Resumen
La búsqueda de alternativas terapéuticas para el tratamiento del cáncer de mama se ha extendido a distintas combinaciones de drogas, entre ellas, análogos de adenosina-3',5'-monofosfato cíclico (AMPc). De la amplia variedad existente, el 8-cloro-adenosina-3',5'-monofosfato cíclico (8-Cl-AMPc) es el más empleado, hallándose en fase de estudios clínicos. En este trabajo se analiza a nivel experimental, el efecto del compuesto, solo o combinado con otros agentes, sobre útero de ratón. Para ello, se administró a ratones Balb/c: 8-Cl-AMPc, tamoxifeno (Tam), y acetato de medroxiprogesterona (MPA), solos o combinados. Se halló que el peso del útero disminuyó por efecto del tratamiento con el 8-Cl-AMPc, sin modificación histológica importante de la mucosa uterina ni cambios significativos en el ciclo estral. El Tam disminuyó el peso del útero provocando hiperplasia quística y detención del ciclo estral en diestro. La MPA aumentó el peso del útero provocando edema del endometrio y ciclo estral de pseudopreñez. En combinación con el 8-Cl-AMPc, tanto Tam como MPA tuvieron efectos predominantes. Se resalta la importancia de estudiar los efectos de combinaciones de drogas antineoplásicas sobre tejidos sanos blanco de hormonas sexuales, aun cuando las vías transduccionales de acción sean diferentes.
The use of different combinations of drugs, among them adenosine-3',5'-monofosfate cyclic analogues, has expanded the search for therapeutical alternatives to treat breast cancer. From a current existing wide variety, the 8-chloro-adenosine-3',5'-monophosphate (8-Cl-cAMP) is the most employed and at present, it is in phase II of clinical studies. This paper analizes the effect of this compound alone or in combination with other agents on mouse uterus. From a current at experimental stage. In order to achieve this 8-Cl-cAMP, tamoxifen (Tam) and medroxyprogesterone acetate (MPA), alone or combined were administered to Balb/c mice. It was found that 8-Cl-cAMP diminished uterus weight but did not modify significantly its histopathology or the estral cycle; Tam diminished uterus weight showing cystic hyperplasia and estral cycle arrested at diestrus; MPA treatment produced the increase of uteri weight, caused an endometrium edematization and a pseudopregnancy estral cycle. When combined with 8-Cl-cAMP, Tam or MPA always had the predominant effect. The importance studying the effect of the combination of antineoplastic drugs on non-transformed target-tissues, is highlighted even if transductional pathways of action are different.
The use of different combinations of drugs, among them adenosine-3',5'-monofosfate cyclic analogues, has expanded the search for therapeutical alternatives to treat breast cancer. From a current existing wide variety, the 8-chloro-adenosine-3',5'-monophosphate (8-Cl-cAMP) is the most employed and at present, it is in phase II of clinical studies. This paper analizes the effect of this compound alone or in combination with other agents on mouse uterus. From a current at experimental stage. In order to achieve this 8-Cl-cAMP, tamoxifen (Tam) and medroxyprogesterone acetate (MPA), alone or combined were administered to Balb/c mice. It was found that 8-Cl-cAMP diminished uterus weight but did not modify significantly its histopathology or the estral cycle; Tam diminished uterus weight showing cystic hyperplasia and estral cycle arrested at diestrus; MPA treatment produced the increase of uteri weight, caused an endometrium edematization and a pseudopregnancy estral cycle. When combined with 8-Cl-cAMP, Tam or MPA always had the predominant effect. The importance studying the effect of the combination of antineoplastic drugs on non-transformed target-tissues, is highlighted even if transductional pathways of action are different.
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