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1.
Rev. peru. med. exp. salud publica ; 39(4): [450-455], oct. 2022. tab, graf
Artigo em Espanhol | LILACS | ID: biblio-1424345

RESUMO

El objetivo de este estudio fue determinar la presencia del Virus Papiloma Humano (VPH) tipo 16 y 18 en biopsias de tejido mamario parafinado de pacientes con diagnóstico clínico de cáncer de mama. Se analizaron 32 biopsias de cáncer de mama embebidas en parafina para detectar el ADN de VPH mediante PCR en tiempo real, los iniciadores estuvieron dirigidos al gen E6. Se evaluaron el tipo histológico, grado histológico y la sobreexpresión de C-erB2 y Ki-67 mediante inmunohistoquímica. El 84,38% (27) fueron positivos para VPH, el 25% (8) fueron positivos para VPH-16 y el 59,38% (19) para VPH-18. El 15,63% (5) de las muestras presentaron infección mixta. Se evidenció la sobrexpresión de C-erbB2 y Ki-67 en 6,25% (2) de las muestras positivas para VPH-16 y 15,63% (5) de las muestras positivas para VPH-18. Se detectó ADN de VPH-16 y VPH-18 en las muestras de biopsias analizadas mediante PCR en tiempo real.


The aim of this study was to determine the presence of Human Papillomavirus (HPV) type 16 and 18 in biopsies of paraffin-embedded breast tissue from patients with clinically diagnosed breast cancer. 32 paraffin-embedded breast cancer biopsies were analyzed in order to detect HPV DNA by real-time PCR, the primers were directed at the E6 gene. The histological type, histological grade and overexpression of C-erB2 and Ki-67 were evaluated by immunohistochemistry. 84.38% (27) of the samples were positive for HPV, 25% (8) were positive for HPV-16 and 59.38% (19) were positive for HPV-18. Mixed infection was found in 15.63% (5) of the samples. Overexpression of C-erbB2 and Ki-67 was seen in 6.25% (2) of the samples positive for HPV-16 and in 15.63% (5) samples positive for HPV-18. HPV-16 and HPV-18 DNA was detected in the biopsy samples analyzed by real-time PCR.


Assuntos
Humanos , Feminino , Neoplasias da Mama , Papillomavirus Humano 16 , Papillomavirus Humano 18 , Papillomaviridae , Tecidos , Biópsia , Imuno-Histoquímica , Diagnóstico Clínico , Reação em Cadeia da Polimerase
2.
Rev Peru Med Exp Salud Publica ; 39(4): 450-455, 2022.
Artigo em Espanhol, Inglês | MEDLINE | ID: mdl-36888807

RESUMO

OBJECTIVES.: Motivation for the study: there are few studies about high-risk Human Papillomavirus in patients with breast cancer, which is currently the most recurrent neoplasm in Peru. Main findings: greater presence of Human Papillomavirus was evidenced in infiltrating ductal carcinoma and grade III samples. In addition, real-time polymerase chain reaction showed greater diagnostic accuracy than immunohistochemistry. Implications: a better understanding of the presence of Human Papillomavirus and its possible relationship with breast cancer will contribute to improve preventive measures for this disease. The aim of this study was to determine the presence of Human Papillomavirus (HPV) type 16 and 18 in biopsies of paraffin-embedded breast tissue from patients with clinically diagnosed breast cancer. 32 paraffin-embedded breast cancer biopsies were analyzed in order to detect HPV DNA by real-time PCR, the primers were directed at the E6 gene. The histological type, histological grade and overexpression of C-erB2 and Ki-67 were evaluated by immunohistochemistry. 84.38% (27) of the samples were positive for HPV, 25% (8) were positive for HPV-16 and 59.38% (19) were positive for HPV-18. Mixed infection was found in 15.63% (5) of the samples. Overexpression of C-erbB2 and Ki-67 was seen in 6.25% (2) of the samples positive for HPV-16 and in 15.63% (5) samples positive for HPV-18. HPV-16 and HPV-18 DNA was detected in the biopsy samples analyzed by real-time PCR. MATERIALS AND METHODS.: Cross-sectional descriptive study with an analytical component, based on clinical records of patients at the Neurological Institute of Colombia, between 2013 and 2021. Progression to disability in MS patients was defined as the time to an increase of at least 0.5 points in the EDSS (Expanded Disability Status Scale) score, sustained for at least six months. A Cox regression model was used to estimate the survival function and Hazard Ratios (HR) with their 95% confidence intervals (95% CI).


OBJETIVOS.: Motivación para realizar el estudio: Existen pocos estudios acerca del Virus del Papiloma Humano (VPH) de alto riesgo en pacientes con cáncer de mama (CaMa), la cual es actualmente la neoplasia más recurrente en Perú. Principales hallazgos: Se evidenció mayor presencia del VPH en las biopsias de carcinoma ductal infiltrante y grado III, además, se demostró que la reacción en cadena de la polimerasa en tiempo real tuvo mayor precisión diagnóstica que la inmunohistoquímica. Implicancias: Un mejor entendimiento de la presencia de VPH y su posible relación con CaMa contribuirán en las medidas preventivas para esta enfermedad. El objetivo de este estudio fue determinar la presencia del Virus Papiloma Humano (VPH) tipo 16 y 18 en biopsias de tejido mamario parafinado de pacientes con diagnóstico clínico de cáncer de mama. Se analizaron 32 biopsias de cáncer de mama embebidas en parafina para detectar el ADN de VPH mediante PCR en tiempo real, los iniciadores estuvieron dirigidos al gen E6. Se evaluaron el tipo histológico, grado histológico y la sobreexpresión de C-erB2 y Ki-67 mediante inmunohistoquímica. El 84,38% (27) fueron positivos para VPH, el 25% (8) fueron positivos para VPH-16 y el 59,38% (19) para VPH-18. El 15,63% (5) de las muestras presentaron infección mixta. Se evidenció la sobrexpresión de C-erbB2 y Ki-67 en 6,25% (2) de las muestras positivas para VPH-16 y 15,63% (5) de las muestras positivas para VPH-18. Se detectó ADN de VPH-16 y VPH-18 en las muestras de biopsias analizadas mediante PCR en tiempo real.


Assuntos
Neoplasias da Mama , Infecções por Papillomavirus , Rosa , Humanos , Feminino , Neoplasias da Mama/patologia , Papillomavirus Humano , Rosa/genética , Infecções por Papillomavirus/diagnóstico , Imuno-Histoquímica , Estudos Transversais , Antígeno Ki-67/genética , Papillomavirus Humano 16/genética , Papillomaviridae/genética , Papillomavirus Humano 18/genética , Reação em Cadeia da Polimerase em Tempo Real , Biópsia
4.
Rev. méd. panacea ; 6(3): 90-93, sept.-dic. 2017. ilus, tab
Artigo em Espanhol | LILACS | ID: biblio-1022081

RESUMO

Objetivo: Determinar la frecuencia de coexpresión dual del p16 (INK4a) y ki67 en los diferentes grados de las neoplasias intraepiteliales cervicales (NIC) y su contribución molecular para diagnóstico y pronóstico. Material y Metodos: El diseño es descriptivo, prospectivo transversal. Se revisaron 20 biopsias de cérvix embebidas en parafina, que se encontraban en el archivo de Anatomía Patológica de un Hospital tercer nivel de Perú entre Enero y Diciembre del 2016, cuyas láminas portaobjeto fueron coloreadas con hematoxilina-eosina y reportadas como neoplasia intraepitelial (NIC) I, II, III. Se realizaron nuevos cortes histológicos de 3 micras para estudios complementarios usando la técnica de inmunohistoquímica dual. Las células con positividad para p16 mostraron tinción citoplasmática y/o nuclear de color rojizo y aquellas con positividad para ki67 mostraron coloración nuclear marrón. Resultados: Los 20 casos de neoplasia intraepitelial se dividen en: 06 casos de NIC I; 11 casos de NIC II y 03 casos de NIC III. La tinción dual para el Ki67 y p16 se realizó a los 20 casos, esto mostró una coexpresión en el 85% y ausencia de expresión dual en 15%. Se observó tinción en los diversos grados de NIC predominando el grado 1+ en un 50%. En el grado 2+ y 3+ la expresión fuerte en NIC II y NIC III respectivamente. La expresión del Ki67 se dio en todos los diferentes grados de NIC. Conclusiones: La coexpresión del Ki67 y p16 es de 85% en los diversos grados de NIC, siendo frecuente en el grupo de NIC II. (AU)


Objetive: To determine the frequency of dual coexpression of p16 (INK4a) and ki67 in the different degrees of cervical intraepithelial neoplasia (CIN) and its molecular contribution for diagnosis and prognosis. Material And Methods: the design is descriptive, prospective and cross-sectional. 20 cervix biopsies embedded in paraffin have been reviewed. These slides gathered from January 2016 to December 2016 were located in the records of Anatomical Pathology Department of a third level Hospital in Peru. The slides were stained with hematoxylin-eosin and reported as intraepithelial neoplasia (CIN) I, II, III. New histological sections of 3 microns were made for complementary studies by using dual immunohistochemistry technique. The cells with positivity for p16 showed cytoplasmic and / or nuclear reddish staining and those with positivity for ki67 showed brown nuclear coloration. Results: The 20 cases of intraepithelial neoplasia are divided into: 06 cases of CIN I; 11 cases of CIN II and 03 cases of CIN III. Dual staining for Ki67 and p16 was performed in all 20 cases. This showed coexpression in 85% and absence of dual expression in 15%. Staining was observed in the different grades of CIN, with predominance in grade 1+ ( 50%). In grade 2+ and 3+ the expression was strong in CIN II and CIN III respectively. The expression of Ki67 occurred in all the different grades of NIC. Conclusions: The coexpression of Ki67 and p16 is 85% in the different grades of CIN, being frequent in the group of CIN II. (AU)


Assuntos
Humanos , Feminino , Carcinoma in Situ , Neoplasias do Colo do Útero , Hematoxilina , Epidemiologia Descritiva , Estudos Transversais , Estudos Prospectivos
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