ABSTRACT
Introduction: Breast cancer is the most common cancer in women in developed countries. In India; it is second to cancer of cervix among women. Several histopathological features have prognostic significance in breast carcinoma which includes histologic subtype, grade, lymph node status, ER/PR status, Growth factors and its receptors, proliferation activity and DNA content, oncogenes and tumor suppressor genes. The Immunohistochemistry (IHC) classification provides both therapeutic and prognostic information. Aim and objectives: To assesses the ER/PR status and HER -2 status of breast carcinoma, to correlate the ER/PR and HER-2 receptors status with modified Bloom- Richardson histological grading, and clinico pathological parameters. Materials and methods: This study was undertaken over a period of 2 years from August 2013 to July 2015 in the Department of Pathology, Chalmeda Anand Rao Institute of Medical Sciences. Total of 75 cases of carcinoma breast in females diagnosed histopathologically, belonging to age group of 21-85 years were included in the study. Pingle Prathyusha, Radhika Mucharla, V. Srinivas Kumar, Geeta Voolapalli, Thota Ravinder. Expression of ER, PR and HER 2 Receptor Status in Breast Carcinomas and its Correlation with Histopathological Grading. IAIM, 2019; 6(7): 49-58. Page 50 Results: Histopathological grading was done according to Modified Bloom Richardson’s grading. 27(36%) cases were of grade II and 24(32%) cases each were of grade I and grade III. ER and PR were positive in 76% and 58.7% of tumors respectively. HER-2 over expression (score 2+ & 3+) was seen in 44% of tumors and was negative (0 or 1+) in 56% of tumors. Among the most common histologic subtype i.e., IDC (NOS), ER, PR and HER-2 were expressed in 75.36%, 60.86% and 44.92% respectively. Tumors with ER/PR-, HER2+ subtype were larger (>5cms), 1(1.3%) each medullary and apocrine carcinoma were positive for HER-2. None of the lobular, mucinous and papillary carcinoma expressed HER-2. Statistically significant values were noted for histologic grade immunohistochemical sub types, lympho vascular invasion and nuclear pleomorphism. Conclusion: In this study ER, PR and HER-2 receptors status correlates well with histopathological grading and other clinico-pathological parameters. These assays have the advantage of allowing only tumor cells to be assessed for receptor status. They can be conducted relatively inexpensively on routinely processed tissue sections with no need for specialized equipment.
ABSTRACT
Introducción: la familia Leguminosae es rica en isoflavonoides y puede tener efecto anticáncer. Las especies panameñas de esta familia no han sido estudiadas para explorar su potencial en los cánceres de mamas y próstata, dos principales causas de mortalidad en la población adulta panameña. Objetivo: evaluar el efecto antiproliferativo contra cáncer de mamas estrógeno dependiente (RE+) y cáncer de próstata andrógeno dependiente (RA+) en extractos metanólicos de la familia Leguminosae. Materiales: las 69 especies de plantas de esta familia fueron recolectadas en las provincias de Veraguas y Darién, República de Panamá. Para la preparación de los extractos, el material vegetal desecado y pulverizado de diversas partes de las plantas fue macerado con metanol por 24 h con agitación, luego filtrado y concentrado en un rotavapor a < 40 °C y posteriormente liofilizado. Los extractos crudos así obtenidos fueron evaluados en las líneas celulares de cáncer de mamas: MCF-7(RE+) y MCF-7(RE-), y cáncer de próstata (CaP (RA+)), utilizando el ensayo antiproliferativo con sulforodamida (SRB) y tretazolio (MTT). Resultados: los extractos más activos contra cáncer de mama estrógeno-dependiente (ER+) fueron Neptunia pubescens (fruto), Zygia latifolia (tallo) y Albizia adinocephala (corteza) con valores de GI50 entre 1,1 a 5,9 µg/ml, mientras que contra cáncer de próstata-andrógeno-dependiente (AR+) corresponden a Zygia latifolia (hoja), Pithecellobium dulce (hojas) y Acosmium panamense (tallo), que mostraron una GI50 entre 1,2 a 5,1 µg/ml. Además, el extracto de Albizia adinocephala (corteza) fue activo contra cáncer de mamas que expresa el receptor HER-2, mostrando una IC50 de 4,8 µg/ml. Conclusiones: los extractos crudos de las especies promisorias podrían ser útiles como fuentes potenciales para la obtención de sustancias con actividad antiproliferativa contra cánceres receptores dependientes (RE+), (RA+) y (HER-2+(AU)
Introduction: the Leguminosae family is rich in isoflavonoids potentially effective against cancer. No studies have been conducted of Panamanian species from this family to explore their possible use in the treatment of breast and prostate cancer, two main causes of mortality among the adult population in Panama. Objective: evaluate the antiproliferative effect of methanolic extracts from the Leguminosae family against estrogen-dependent breast cancer (ER+) and androgen-dependent prostate cancer (AR+). Materials: all 69 species of plants from this family were collected from the provinces of Veraguas and Darién in the Republic of Panama. Dried, pulverized material from various parts of the plants was macerated in methanol for 24 h with stirring. The material obtained was filtered, concentrated in a rotary evaporator at < 40°C, and lyophilized. The crude extracts obtained were evaluated for breast cancer cell lines MCF-7(ER+) and MCF-7(ER-), and prostate cancer cell lines (CaP (AR+)), using the antiproliferative assay with sulphorhodamine (SRB) and tetrazolium (MTT). Results: the most active extracts against estrogen-dependent breast cancer (ER+) were obtained from Neptunia pubescens (fruit), Zygia latifolia (stem) and Albizia adinocephala (bark) with GI50 values of 1.1 to 5.9 µg/ml, whereas the most active extracts against androgen-dependent prostate cancer (AR+) were obtained from Zygia latifolia (leaves), Pithecellobium dulce (leaves) and Acosmium panamense (stem), with GI50 values of 1.2 to 5.1 µg/ml. Additionally, extract from Albizia adinocephala (bark) was active against breast cancer expressing receptor HER-2, with an CI50 of 4.8 µg/ml. (AU)Conclusions: crude extracts from promising species could be useful as potential sources of substances with antiproliferative activity against receptor-dependent cancers (ER+), (AR+) and (HER-2+(AU)