In spite of continuous research efforts directed at early detection and treatment of pancreatic cancer, the outlook for patients affected by the disease remains dismal. With most cases still being diagnosed at advance...In spite of continuous research efforts directed at early detection and treatment of pancreatic cancer, the outlook for patients affected by the disease remains dismal. With most cases still being diagnosed at advanced stages, no improvement in survival prognosis is achieved with current diagnostic imaging approaches. In the absence of a dominant precancerous condition, several risk factors have been identified including family history, chronic pancreatitis, smoking, diabetes mellitus, as well as certain genetic disorders such as hereditary pancreatitis, cystic fibrosis, familial atypical multiple mole melanoma, and Peutz-Jeghers and Lynch syn- dromes. Most pancreatic carcinomas, however, remain sporadic. Current progress in experimental molecular techniques has enabled detailed understanding of the molecular processes of pancreatic cancer development. According to the latest information, malignant pancre- atic transformation involves multiple oncogenes and tumor-suppressor genes that are involved in a variety of signaling pathways. The most characteristic aberrations （somatic point mutations and allelic losses） affect onco- genes and tumor-suppressor genes within RAS, AK-I- and Wnt signaling, and have a key role in transcription and proliferation, as well as systems that regulate the cell cycle （SMAD/DPC, CDKN2A/p16） and apoptosis （TP53）. Understanding of the underlying molecular mechanisms should promote development of new methodology for early diagnosis and facilitate improvement in current approaches for pancreatic cancer treatment.展开更多
Breast cancer has been an important factor that influenced women＇s health with its increasing incidence. The conventional research suggests that breast cancer is caused by genetic mutations, while some advanced studi...Breast cancer has been an important factor that influenced women＇s health with its increasing incidence. The conventional research suggests that breast cancer is caused by genetic mutations, while some advanced studies have found that epigenetics plays an important role in the pathogenesis, prognosis, prevention and treatment of breast cancer Epigenetics is a new direction of research in the field of life sciences. Traditional Chinese medicine, like surgery, radiotherapy, chemotherapy and endocrinotherapy, is an important part of comprehensive treatment of breast cancer.展开更多
Objectives. To investigate the genetic susceptibility for breast cancer of Chinese, a hospital-based case-control study, pedigree survey and molecular genetic study were conducted. Methods. Logistic regression model a...Objectives. To investigate the genetic susceptibility for breast cancer of Chinese, a hospital-based case-control study, pedigree survey and molecular genetic study were conducted. Methods. Logistic regression model and stratification methods were used in the risk factors analysis. Li-Mantel-Gart and Falconer methods were used to analyze the segregation ratio and heritability. Polymerase chain reaction(PCR) and polyacrylamide gel electrophoresis were used to detect AI, G-banding technique was used to detect the chromosome aberration of peripheral blood lymphocyte. Results. Family history of breast cancer is related to enhanced breast cancer risk significantly, OR is 3905(95%CI=1079～1413), and it widely interacts with other risk factors. Accumulative incidence of breast cancer in first degree relatives is 999%, which is larger than that in second, third degree and non-blood relatives. Segregation ratio is 0021, heritability among first degree relatives is 356±58%. Frequencies of LOH at BRCA1 and BRCA2 loci in sporadic breast cancer are 612% and 577% respectively. In the sibs, both of them show LOH at D13S173 locus, and high frequencies of chromosome aberrations were observed. Conclusions. Genetic susceptibility contributes to breast cancer occurrence of Chinese, and its racial variation may be one of the important reasons for the large difference of incidence between western and eastern countries.展开更多
Breast cancer has been an important factor that influenced women＇s health with its increasing incidence. The conventional research suggests that breast cancer is caused by genetic mutations, while some advanced studi...Breast cancer has been an important factor that influenced women＇s health with its increasing incidence. The conventional research suggests that breast cancer is caused by genetic mutations, while some advanced studies have found that epigenetics plays an important role in the pathogenesis, prognosis, prevention and treatment of breast cancer Epigenetics is a new direction of research in the field of life sciences. Traditional Chinese medicine, like surgery, radiotherapy, chemotherapy and endocrinotherapy, is an important part of comprehensive treatment of breast cancer, especially in the consolidation phase of treatment period,which can prevent recurrence or metastasis of breast cancer The theory of epigenetics has some similarities with the theory of TCM, such as ~Correspondence between human being and nature＂, ~Tongbing Yizhi＂ （treating the same disease with different methods）, ~Yibing Tongzhi＂ （treating different diseases with the same method） and the constitution science of TCM. Traditional Chinese medicine can be used to regulate epigenetic modification through DNA methylation, histone modification, miRNA, etc.. The abnormality of epigenetic information can be reversed, which is related to transferring balance between Yin and Yang in the body and making the body restore optimal nature state. This article discusses the application of epigenetics in the study of TCM and in the prevention and treatment of breast cancer. It is a multidisciplinary review to explore the basis about epigenetics in prevention and treatment of breast cancer with TCM, and provide a reference for clinical practice展开更多
Lung cancer is one of the serious threats to human health and life of malignant diseases, on a global scale; it has become one of the major lung cancer deaths. Due to the growth of the tumor and the main reason is tha...Lung cancer is one of the serious threats to human health and life of malignant diseases, on a global scale; it has become one of the major lung cancer deaths. Due to the growth of the tumor and the main reason is that apoptosis is inhibited, therefore, it can induce apoptosis in lung cancer cells that is an important measure for the treatment of lung cancer, which is one of the effective means to reduce lung cancer mortality. In this paper, A549 human lung adenocarcinoma cell line, for example, has the use of chemical genetics of these emerging technological platforms, research pravastatin on apoptosis in human lung adenocarcinoma A549 intervention, while providing a theoretical basis for the development of new lung cancer therapy.展开更多
文摘In spite of continuous research efforts directed at early detection and treatment of pancreatic cancer, the outlook for patients affected by the disease remains dismal. With most cases still being diagnosed at advanced stages, no improvement in survival prognosis is achieved with current diagnostic imaging approaches. In the absence of a dominant precancerous condition, several risk factors have been identified including family history, chronic pancreatitis, smoking, diabetes mellitus, as well as certain genetic disorders such as hereditary pancreatitis, cystic fibrosis, familial atypical multiple mole melanoma, and Peutz-Jeghers and Lynch syn- dromes. Most pancreatic carcinomas, however, remain sporadic. Current progress in experimental molecular techniques has enabled detailed understanding of the molecular processes of pancreatic cancer development. According to the latest information, malignant pancre- atic transformation involves multiple oncogenes and tumor-suppressor genes that are involved in a variety of signaling pathways. The most characteristic aberrations （somatic point mutations and allelic losses） affect onco- genes and tumor-suppressor genes within RAS, AK-I- and Wnt signaling, and have a key role in transcription and proliferation, as well as systems that regulate the cell cycle （SMAD/DPC, CDKN2A/p16） and apoptosis （TP53）. Understanding of the underlying molecular mechanisms should promote development of new methodology for early diagnosis and facilitate improvement in current approaches for pancreatic cancer treatment.
文摘Breast cancer has been an important factor that influenced women＇s health with its increasing incidence. The conventional research suggests that breast cancer is caused by genetic mutations, while some advanced studies have found that epigenetics plays an important role in the pathogenesis, prognosis, prevention and treatment of breast cancer Epigenetics is a new direction of research in the field of life sciences. Traditional Chinese medicine, like surgery, radiotherapy, chemotherapy and endocrinotherapy, is an important part of comprehensive treatment of breast cancer.
文摘Objectives. To investigate the genetic susceptibility for breast cancer of Chinese, a hospital-based case-control study, pedigree survey and molecular genetic study were conducted. Methods. Logistic regression model and stratification methods were used in the risk factors analysis. Li-Mantel-Gart and Falconer methods were used to analyze the segregation ratio and heritability. Polymerase chain reaction(PCR) and polyacrylamide gel electrophoresis were used to detect AI, G-banding technique was used to detect the chromosome aberration of peripheral blood lymphocyte. Results. Family history of breast cancer is related to enhanced breast cancer risk significantly, OR is 3905(95%CI=1079～1413), and it widely interacts with other risk factors. Accumulative incidence of breast cancer in first degree relatives is 999%, which is larger than that in second, third degree and non-blood relatives. Segregation ratio is 0021, heritability among first degree relatives is 356±58%. Frequencies of LOH at BRCA1 and BRCA2 loci in sporadic breast cancer are 612% and 577% respectively. In the sibs, both of them show LOH at D13S173 locus, and high frequencies of chromosome aberrations were observed. Conclusions. Genetic susceptibility contributes to breast cancer occurrence of Chinese, and its racial variation may be one of the important reasons for the large difference of incidence between western and eastern countries.
文摘Breast cancer has been an important factor that influenced women＇s health with its increasing incidence. The conventional research suggests that breast cancer is caused by genetic mutations, while some advanced studies have found that epigenetics plays an important role in the pathogenesis, prognosis, prevention and treatment of breast cancer Epigenetics is a new direction of research in the field of life sciences. Traditional Chinese medicine, like surgery, radiotherapy, chemotherapy and endocrinotherapy, is an important part of comprehensive treatment of breast cancer, especially in the consolidation phase of treatment period,which can prevent recurrence or metastasis of breast cancer The theory of epigenetics has some similarities with the theory of TCM, such as ~Correspondence between human being and nature＂, ~Tongbing Yizhi＂ （treating the same disease with different methods）, ~Yibing Tongzhi＂ （treating different diseases with the same method） and the constitution science of TCM. Traditional Chinese medicine can be used to regulate epigenetic modification through DNA methylation, histone modification, miRNA, etc.. The abnormality of epigenetic information can be reversed, which is related to transferring balance between Yin and Yang in the body and making the body restore optimal nature state. This article discusses the application of epigenetics in the study of TCM and in the prevention and treatment of breast cancer. It is a multidisciplinary review to explore the basis about epigenetics in prevention and treatment of breast cancer with TCM, and provide a reference for clinical practice
文摘Lung cancer is one of the serious threats to human health and life of malignant diseases, on a global scale; it has become one of the major lung cancer deaths. Due to the growth of the tumor and the main reason is that apoptosis is inhibited, therefore, it can induce apoptosis in lung cancer cells that is an important measure for the treatment of lung cancer, which is one of the effective means to reduce lung cancer mortality. In this paper, A549 human lung adenocarcinoma cell line, for example, has the use of chemical genetics of these emerging technological platforms, research pravastatin on apoptosis in human lung adenocarcinoma A549 intervention, while providing a theoretical basis for the development of new lung cancer therapy.
