Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 4 de 4
Filtrar
Mais filtros










Base de dados
Intervalo de ano de publicação
1.
Cancer Epidemiol ; 68: 101793, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-32841926

RESUMO

BACKGROUND: Human papillomavirus (HPV) is considered the strongest epidemiologic risk factor for cervical cancer. However, it is not a sufficient cause given the high prevalence of transient infections. We examined the relationship between exposure to tobacco smoke, measured using urinary nicotine metabolite concentrations, and p16/Ki-67 co-expression in cervical smears and subsequent risk of developing CIN2+/CIN3+ lesions in HPV positive women. METHODS: This prospective longitudinal study enrolled women presenting to colposcopy with cytological abnormalities LSIL/ASCUS at the National Maternity Hospital, Dublin. Women gave a urine sample which was used to perform the Nicotine Metabolite Assay (Siemens). HPV positive (HC2) cervical smears were stained by immunocytochemistry for p16/Ki-67 (CINtec PLUS, Roche). Two year follow-up data, including histological diagnosis, was collected for each woman. Crude and adjusted odds ratios were calculated using logistic regression to investigate associations between tobacco smoke, p16/Ki-67 positivity and CIN2+/CIN3 + . RESULTS: In total, 275 HPV positive women were included. Women with nicotine metabolite concentrations above 500 ng/mL, indicative of smoking, were classified as smokers. Smokers were at an increased risk of testing positive for p16/Ki-67 (OR 1.678; 1.027-2.740) and CIN2+ and CIN3+ (OR 1.816; 1.107-2.977 and OR 2.453; 1.200-5.013) in compared to non-smokers. In p16/Ki-67 positive women, smoking further increased their risk of CIN2+/CIN3+ (OR 2.290; 1.017-5.159 and OR 3.506 (1.534-8.017). CONCLUSION: HPV positive women exposed to tobacco smoke are at a higher risk of testing positive for p16/Ki-67 co-expression. Risk of high-grade disease is almost doubled in women who are exposed to tobacco smoke.


Assuntos
Neoplasia Intraepitelial Cervical/epidemiologia , Inibidor p16 de Quinase Dependente de Ciclina/metabolismo , Antígeno Ki-67/metabolismo , Nicotina/urina , Infecções por Papillomavirus/complicações , Poluição por Fumaça de Tabaco/análise , Neoplasias do Colo do Útero/epidemiologia , Adolescente , Adulto , Neoplasia Intraepitelial Cervical/metabolismo , Neoplasia Intraepitelial Cervical/patologia , Neoplasia Intraepitelial Cervical/virologia , Colposcopia , Feminino , Humanos , Estudos Longitudinais , Gradação de Tumores , Teste de Papanicolaou , Papillomaviridae/isolamento & purificação , Infecções por Papillomavirus/virologia , Gravidez , Estudos Prospectivos , Poluição por Fumaça de Tabaco/efeitos adversos , Neoplasias do Colo do Útero/metabolismo , Neoplasias do Colo do Útero/patologia , Neoplasias do Colo do Útero/virologia , Adulto Jovem
2.
Breast Cancer Res Treat ; 181(3): 571-580, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32378053

RESUMO

PURPOSE: The association between pathological complete response (pCR) in patients receiving neoadjuvant chemotherapy (NAC) for breast cancer and Circulating Tumour Cells (CTCs) is not clear. The aim of this study was to assess whether CTC enumeration could be used to predict pathological response to NAC in breast cancer as measured by the Miller-Payne grading system. METHODS: Twenty-six patients were recruited, and blood samples were taken pre- and post-NAC. CTCs were isolated using the ScreenCell device and stained using a modified Giemsa stain. CTCs were enumerated by 2 pathologists and classified as single CTCs, doublets, clusters/microemboli and correlated with the pathological response as measured by the Miller-Payne grading system. χ2 or ANOVA was performed in SPSS 24.0 statistics software for associations. RESULTS: 89% of patients had invasive ductal carcinoma (IDC) and 11% invasive lobular carcinoma (ILC). At baseline 85% of patients had CTCs present, median 7 (0-161) CTCs per 3 ml of whole blood. Post-chemotherapy, 58% had an increase in CTCs. This did not correlate with the Miller-Payne grade of response. No significant association was identified between the number of CTCs and clinical characteristics; however, we did observe a correlation between pre-treatment CTC counts and body mass index, p < 0.05. CONCLUSIONS: Patients with a complete response to NAC still had CTCs present, suggesting enumeration is not sufficient to aid surgery stratification. Additional characterisation and larger studies are needed to further characterise CTCs isolated pre- and post-chemotherapy. Long-term follow-up of these patients will determine the significance of CTCs in NAC breast cancer patients.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias da Mama/patologia , Carcinoma Ductal de Mama/patologia , Carcinoma Lobular/patologia , Terapia Neoadjuvante/mortalidade , Células Neoplásicas Circulantes/patologia , Adulto , Idoso , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/metabolismo , Carcinoma Ductal de Mama/tratamento farmacológico , Carcinoma Ductal de Mama/metabolismo , Carcinoma Lobular/tratamento farmacológico , Carcinoma Lobular/metabolismo , Estudos de Coortes , Feminino , Seguimentos , Humanos , Pessoa de Meia-Idade , Gradação de Tumores , Células Neoplásicas Circulantes/efeitos dos fármacos , Receptor ErbB-2/metabolismo , Receptores de Estrogênio/metabolismo , Receptores de Progesterona/metabolismo , Taxa de Sobrevida
3.
Psychooncology ; 25(5): 597-604, 2016 May.
Artigo em Inglês | MEDLINE | ID: mdl-26392040

RESUMO

OBJECTIVE: Little is known about which women are at greatest risk of adverse psychological after-effects following colposcopy. This study examined time trends in, and identified predictors of, anxiety and specific worries over 12 months. METHODS: Women attending two hospital-based colposcopy clinics for abnormal cervical cytology were invited to complete psychosocial questionnaires at 4, 8 and 12 months following colposcopy. General anxiety and screening-specific worries (about cervical cancer, having sex and future fertility) were measured. Generalised estimating equations were used to assess associations between socio-demographic, lifestyle and clinical variables and risk of psychological outcomes. RESULTS: Of 584 women initially recruited, 429, 343 and 303 completed questionnaires at 4, 8 and 12 months, respectively. Screening-specific worries declined significantly over time but were still relatively high at 12 months: 23%, 39% and 18% for worries about cervical cancer, fertility and having sex, respectively. Anxiety remained stable (20%) over time. Risks of cervical cancer worry and anxiety were both almost double in women without private health insurance (cervical cancer worry: OR = 1.80, 95% CI 1.25-2.61; anxiety: OR = 1.84, 95% CI 1.20-2.84). Younger women (<40 years) had higher risk of fertility worries. Non-Irish women had higher risk of anxiety (OR = 2.13, 95% CI 1.13-4.01). CONCLUSIONS: Screening-specific worries declined over time but anxiety remained stable. Notable proportions of women still reported adverse outcomes 12 months following colposcopy, with predictors varying between outcomes. Women in socio-demographically vulnerable groups were at greatest risk of adverse psychological outcomes. This information could inform development of interventions to alleviate psychological distress post-colposcopy.


Assuntos
Ansiedade/psicologia , Colposcopia/psicologia , Estresse Psicológico/psicologia , Adulto , Ansiedade/epidemiologia , Transtornos de Ansiedade/epidemiologia , Transtornos de Ansiedade/psicologia , Feminino , Humanos , Irlanda/epidemiologia , Estudos Longitudinais , Pessoa de Meia-Idade , Gravidez , Prevalência , Estresse Psicológico/epidemiologia , Inquéritos e Questionários , Neoplasias do Colo do Útero/patologia , Neoplasias do Colo do Útero/psicologia
4.
J Clin Microbiol ; 51(10): 3415-7, 2013 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-23903550

RESUMO

The clinical performance of the cobas human papillomavirus (HPV) test for detection of high-grade disease in a colposcopy-referred population was compared with that of Hybrid Capture 2 (HC2). The overall agreement between the tests was 92.3%. Clinical sensitivity and specificity for detection of cervical intraepithelial neoplasia grade 2 or greater (CIN2+) were 90.0% and 55.5% for cobas and 90.5% and 50.2% for HC2, respectively. In conclusion, both tests showed comparable performance for detection of CIN2+.


Assuntos
Técnicas de Diagnóstico Molecular/métodos , Papillomaviridae/isolamento & purificação , Infecções por Papillomavirus/diagnóstico , Infecções por Papillomavirus/virologia , Virologia/métodos , Adulto , Neoplasia Intraepitelial Cervical/virologia , Colposcopia , Feminino , Humanos , Sensibilidade e Especificidade , Neoplasias do Colo do Útero/virologia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...