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1.
Mem Inst Oswaldo Cruz ; 106(3): 322-9, 2011 May.
Artigo em Inglês | MEDLINE | ID: mdl-21655820

RESUMO

The schistosomal parasite plays a critical role in the development of malignant lesions in different organs. The pathogenesis of cancer is currently under intense investigation to identify reliable prognostic indices for disease detection. The objective of this paper is to evaluate certain biochemical parameters as diagnostic tools to efficiently differentiate between colonic carcinoma and colonic carcinoma associated with schistosomal infection among Egyptian patients. The parameters under investigation are interleukin 2 (IL-2), tumour necrosis factor alpha (TNF-α), carcinoembryonic antigen (CEA) levels, tissue telomerase, pyruvate kinase (PK), glucose-6-phosphate dehydrogenase (G-6-PD) and lactate dehydrogenase (LDH) enzyme activities. The results revealed a significant elevation in the level of the tumour markers IL-2, TNF-α and CEA as well as the activities of LDH, telomerase and G-6-PD among non-bilharzial and bilharzial colonic cancer groups, with a more potent effect in bilharzial infection-associated colonic cancer. A significant inhibition in PK activity was recorded in the same manner as compared to normal tissues. The efficacy of this biomarker was also evaluated through detecting sensitivity, specificity, negative and positive predictive values. In conclusion, schistosomal colonic carcinoma patients displayed more drastic changes in all parameters under investigation. The combination of the selected parameters succeeded in serving as biomarkers to differentiate between the two malignant types.


Assuntos
Biomarcadores Tumorais/sangue , Neoplasias do Colo/diagnóstico , Enteropatias Parasitárias/complicações , Esquistossomose mansoni/complicações , Adenocarcinoma/sangue , Adenocarcinoma/diagnóstico , Adenocarcinoma/parasitologia , Adulto , Idoso , Carcinoma de Células Escamosas/sangue , Carcinoma de Células Escamosas/diagnóstico , Carcinoma de Células Escamosas/parasitologia , Carcinoma de Células de Transição/sangue , Carcinoma de Células de Transição/diagnóstico , Carcinoma de Células de Transição/parasitologia , Neoplasias do Colo/sangue , Neoplasias do Colo/parasitologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Prognóstico , Sensibilidade e Especificidade , Adulto Jovem
2.
Mem. Inst. Oswaldo Cruz ; 106(3): 322-329, May 2011. ilus, tab
Artigo em Inglês | LILACS | ID: lil-589041

RESUMO

The schistosomal parasite plays a critical role in the development of malignant lesions in different organs. The pathogenesis of cancer is currently under intense investigation to identify reliable prognostic indices for disease detection. The objective of this paper is to evaluate certain biochemical parameters as diagnostic tools to efficiently differentiate between colonic carcinoma and colonic carcinoma associated with schistosomal infection among Egyptian patients. The parameters under investigation are interleukin 2 (IL-2), tumour necrosis factor alpha (TNF-α), carcinoembryonic antigen (CEA) levels, tissue telomerase, pyruvate kinase (PK), glucose-6-phosphate dehydrogenase (G-6-PD) and lactate dehydrogenase (LDH) enzyme activities. The results revealed a significant elevation in the level of the tumour markers IL-2, TNF-α and CEA as well as the activities of LDH, telomerase and G-6-PD among non-bilharzial and bilharzial colonic cancer groups, with a more potent effect in bilharzial infection-associated colonic cancer. A significant inhibition in PK activity was recorded in the same manner as compared to normal tissues. The efficacy of this biomarker was also evaluated through detecting sensitivity, specificity, negative and positive predictive values. In conclusion, schistosomal colonic carcinoma patients displayed more drastic changes in all parameters under investigation. The combination of the selected parameters succeeded in serving as biomarkers to differentiate between the two malignant types.


Assuntos
Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem , Neoplasias do Colo , Enteropatias Parasitárias , Esquistossomose mansoni , Biomarcadores Tumorais/sangue , Adenocarcinoma/sangue , Adenocarcinoma , Adenocarcinoma , Carcinoma de Células Escamosas/sangue , Carcinoma de Células Escamosas , Carcinoma de Células Escamosas , Carcinoma de Células de Transição/sangue , Carcinoma de Células de Transição , Carcinoma de Células de Transição , Neoplasias do Colo/sangue , Neoplasias do Colo , Valor Preditivo dos Testes , Prognóstico , Sensibilidade e Especificidade
3.
Clin Breast Cancer ; 6(5): 391-401, 2005 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-16381622

RESUMO

Breast cancer is the most common type of cancer and the most common cause of cancer-related mortality among women worldwide. However, the burden is not evenly distributed, and, according to the best available data, there are large variations in the incidence, mortality, and survival between different countries and regions and within specific regions. Many complex factors underlie these variations, including population structure (eg, age, race, and ethnicity), lifestyle, environment, socioeconomic status, risk factor prevalence, mammography use, disease stage at diagnosis, and access to high-quality care. We review recent breast cancer incidence and mortality statistics and explore why these vary so greatly across the world. Further research is needed to fully understand the reasons for variations in breast cancer outcomes. This will aid the development of tailored strategies to improve outcomes in general as well as the standard of care for underserved populations and reduce the burden of breast cancer worldwide.


Assuntos
Neoplasias da Mama/epidemiologia , África/epidemiologia , Fatores Etários , América/epidemiologia , Ásia/epidemiologia , Austrália/epidemiologia , Neoplasias da Mama/mortalidade , Canadá/epidemiologia , Europa (Continente)/epidemiologia , Feminino , Humanos , Incidência , México/epidemiologia , Taxa de Sobrevida , Estados Unidos/epidemiologia
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