Análogos de la somatostatina en el tratamiento de la retinopatía diabética / Somatostatin analogues in the treatment of diabetic retinopathy

La retinopatía diabética constituye un importante problema de salud por la discapacidad visual que provoca. El tratamiento de elección continúa siendo la fotocoagulación láser, pero en ocasiones hay formas avanzadas en que la respuesta es pobre y la evolución tórpida. Se continúan buscando otras alternativas de tratamiento que puedan mejorar la evolución, como son los esteroides y antiangiogénicos. Con el objetivo de reagrupar información actual sobre este grupo de medicamentos (análogos de la somatostatina), los cuales tienen efectos antiangiogénicos y han sido usados en el tratamiento de la retinopatía diabética proliferativa y el edema macular diabético, se realizó esta revisión. Los análogos de la somatostatina han mostrado ser eficaces, fundamentalmente, en el control de los fenómenos hemorrágicos y proliferativos en la retinopatía diabética proliferativa, y al mejorar también la integridad de la barrera hematoretiniana, ofrecen una alternativa de tratamiento para el edema macular diabético, fundamentalmente, cuando la respuesta al láser no resulta favorable(AU)

The diabetic retinopathy is an important health problem due to visual disability provoked. The choice treatment still remains the laser photocoagulation, but sometimes there is advanced ways in which the response is poor and the course is torpid. Other alternatives of treatment are look for to improve the course including the steroids and anti-angiogenic. The aim of present review was to regroup the current information on this group of drugs (somatostatin analogues), which has a anti-angiogenic effect and used in the treatment of proliferative diabetic retinopathy and the diabetic macular edema. The somatostatin analogues have shown to be effective, mainly in the control of hemorrhagic and proliferative phenomena and to also improve the integrity of the hematoretinal barrier, offer an alternative of treatment for diabetic macular edema, mainly when the response to laser is not favorable(AU)

Curcumin as a therapeutic agent against cancer.

Background: Curcumin is an important chemopreventive agent against cancer. Recently, it has been reported that curcumin has also anti-angiogenic effects in tumor. Objective: This article reviews the effect of curcumin against tumor angiogenesis from view-points of cancer microcirculation and biomarkers. Results and conclusion. We demonstrated an anti-angiogenic effect of curcumin in tumors using nude mice. We studied the inhibitory effects of curcumin on tumor-induced neocapillaries and proangiogenic factors, based on our intravital fluorescent observation. Finally, we hypothesized a possible mechanism for curcumin effect in tumor.