Potencial alelopático de catequinas de Tachigali myrmecophyla (leguminosae).

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Enraizamento de estacas de Cordia verbenacea DC. tratadas com Cyperus rotundus L.

Cyperus rotundus L., conhecida como tiririca, possui folhas e tubérculos ricos em fitormônios e por isso tem sido usada para o enraizamento de estacas. O objetivo deste estudo foi avaliar o efeito da solução aquosa de tiririca no enraizamento da erva-baleeira (Cordia verbenacea DC.). Foram utilizados folhas e tubérculos de tiririca. Foram testadas três concentrações de extrato aquoso de tiririca (T1 = 0%, T2 = 7,5% e T3 = 2,5%), no delineamento em blocos casualizados, em três repetições de 20 estacas cada. O terço basal das estacas ficou imerso no extrato por 40 minutos. Aos 31 dias após o plantio avaliou-se o desenvolvimento de raízes (número, comprimento, massa fresca e massa seca) e da parte aérea (altura, massa fresca e massa seca). Obteve-se baixa taxa de mortalidade em todos os tratamentos. Assim, conclui-se que o extrato de tiririca, nas concentrações testadas, não influencia o enraizamento de estacas de erva-baleeira.Disponível também em: Cadernos de Agroecologia, V. 5, n.1, 2010

Integrating Biological Advances Into the Clinical Management of Breast Cancer Related Lymphedema

Breast cancer-related lymphedema (BCRL) occurs in a significant number of breast cancer survivors as a consequence of the axillary lymphatics' impairment after therapy (mainly axillary surgery and irradiation). Despite the recent achievements in the clinical management of these patients, BCRL is often diagnosed at its occurrence. In most cases, it remains a progressive and irreversible condition, with dramatic consequences in terms of quality of life and on sanitary costs. There are still no validated pre-surgical strategies to identify individuals that harbor an increased risk of BCRL. However, clinical, therapeutic, and tumor-specific traits are recurrent in these patients. Over the past few years, many studies have unraveled the complexity of the molecular and transcriptional events leading to the lymphatic system ontogenesis. Additionally, molecular insights are coming from the study of the germline alterations involved at variable levels in BCRL models. Regrettably, there is a substantial lack of predictive biomarkers for BCRL, given that our knowledge of its molecular milieu remains extremely puzzled. The purposes of this review were (i) to outline the biology underpinning the ontogenesis of the lymphatic system; (ii) to assess the current state of knowledge of the molecular alterations that can be involved in BCRL pathogenesis and progression; (iii) to discuss the present and short-term future perspectives in biomarker-based patients' risk stratification; and (iv) to provide practical information that can be employed to improve the quality of life of these patients