Objective This study aimed to evaluate serum and nipple discharge levels of carcinoembryonic antigen(CEA) and cancer antigen 153(CA153) and tissue cyclooxygenase-2(COX-2) expression in breast cancer cases and associat...Objective This study aimed to evaluate serum and nipple discharge levels of carcinoembryonic antigen(CEA) and cancer antigen 153(CA153) and tissue cyclooxygenase-2(COX-2) expression in breast cancer cases and associations of these proteins with breast cancer metastasis.Methods The immunohistochemical Ultra Sensitive^(TM) S-P method was used to detect COX-2 expression in 77 cases of invasive breast carcinoma. Of these cases, 52 exhibited CEA and CA153 in both serum and nipple discharge(electrochemiluminescence method), and associations of these biomarkers with breast cancer prognosis were studied. Sixty cases of benign breast lesion were selected as a control group. Overall survival of breast carcinoma patients was evaluated. COX-2 expression was evaluated relative to clinicopathological features and CEA and CA153 levels, and its role in invasiveness was investigated.Results Among cases of invasive breast cancer, 72.7%(56/77) were COX-2 immunopositive, compared to 16.7% of benign lesions(χ2 = 66.745, P = 0.000) percentage of positive cells. COX-2 overexpression in breast cancer correlated positively with histological grade(II vs III; χ2 = 4.064, P = 0.043), lymph node metastasis(χ2 = 9.135, P = 0.003), and distant metastasis(χ2 = 8.021, P = 0.003). However, COX-2 expression did not correlate with age(≤ 50 vs 50 years) or tumor size(≤ 5 vs > 5 cm)(χ2 = 0.081, P = 0.776 and χ2 = 3.702, P = 0.054, respectively). Among breast cancer patients, COX-2 overexpression in tumors also correlated with shorter overall survival(P < 0.05). In brief, increased COX-2 expression correlates with worse prognosis and shorter overall survival. Malignant lesions were associated with significantly higher serum and nipple discharge levels of biomarkers, relative to benign lesions(P < 0.05). These biomarkers were present at significantly higher levels in nipple discharge than in serum(P < 0.05). Furthermore, significantly higher nipple discharge levels of CEA and CA153 were observed in COX-2-positive breast carcinoma patients, compared to COX-2-negative patients(P <0.05). Shorter overall survival in cancer patients group related to COX-2 overexpression in tumors(P < 0.05).Conclusion The study suggests that COX-2 overexpression correlates with poor clinicopathological parameters in breast cancers and might be an important biological marker of invasion and metastasis. The findings of the present study suggest that combined detection of COX-2 tissue expression and CEA and CA153 in serum and nipple discharge could facilitate clinical monitoring and diagnosis of metastasis in patients with breast cancer.展开更多
Background and Objectives: Breast cancer is among the most common causes of cancer related mortality in women worldwide. Early detection and prompt diagnosis of tumor is the first step to prevent cancer-related morbid...Background and Objectives: Breast cancer is among the most common causes of cancer related mortality in women worldwide. Early detection and prompt diagnosis of tumor is the first step to prevent cancer-related morbidity and mortality, and a comprehensive understanding of the involved molecular mechanisms can greatly help in this respect. Breast cancer, like many other types of cancer, is caused by a combination of genetic and epigenetic changes such as inactivation of tumor suppressor genes. Materials and Methods: This study was performed on 40 breast cancer patients and 40 healthy controls. Quantitative real time reverse transcription polymerase chain reaction (real time qRT-PCR) was used to assess the expression of carcinoembryonic antigen (CEA) and mammaglobin mRNA in the peripheral blood of patients and healthy controls. The two groups were compared using t-test. Results: The two groups were not significantly different in terms of the mean age. Twenty-nine out of 40 cancer patients were positive for CEA mRNA and its sensitivity was calculated to be 72.5%. Twelve out of 40 healthy controls were positive for CEA mRNA. Twenty-six out of 40 patients were positive for mammaglobin mRNA indicative of 65% sensitivity while only five out of 40 healthy controls were positive for mammaglobin mRNA. Conclusion: Both CEA and mammaglobin mRNA had high sensitivity in cancer patients;thus, they can be used for screening and early detection of breast cancer patients. Further studies with larger sample sizes are required to confirm the current findings.展开更多
Breast cancer is the leading cause of death among women worldwide.Chemoprevention and chemotherapy play beneficial roles in reducing the incidence and mortality of cancer.Epidemiological and experimental studies showe...Breast cancer is the leading cause of death among women worldwide.Chemoprevention and chemotherapy play beneficial roles in reducing the incidence and mortality of cancer.Epidemiological and experimental studies showed that naturally-occurring antioxidants present in the diet may act as anticancer agents.Identifying the abnormalities of cellular energy metabolism facilitates early detection and management of breast cancer.The present study evaluated the effect of tangeretin on cellular metabolic energy fluxes in 7,12-dimethylbenz(a)anthracene(DMBA)-induced proliferative breast cancer.The results showed that the activities of glycolytic enzymes significantly increased in mammary tissues of DMBA-induced breast cancer bearing rats.The gluconeogenic tricarboxylic acid(TCA) cycle and respiratory chain enzyme activities significantly decreased in breast cancer-bearing rats.In addition,proliferating cell nuclear antigen(PCNA) was highly expressed in breast cancer tissues.However,the activities of glycolytic enzymes were significantly normalized in the tangeretin pre- and post-treated rats and the TCA cycle and respiratory chain enzyme activities were significantly increased in tangeretin treated rats.Furthermore,tangeretin down-regulated PCNA expression on breast cancerbearing rats.Our study demonstrates that tangeretin specifically regulates cellular metabolic energy fluxes in DMBA-induced breast cancer-bearing rats.展开更多
Breast cancer is the second leading cause of cancerrelated deaths in women worldwide;a prime cancer biomarker to aid in the diagnosis, directed treatment, clinical management, and reoccurrence of this cancer is a MUC1...Breast cancer is the second leading cause of cancerrelated deaths in women worldwide;a prime cancer biomarker to aid in the diagnosis, directed treatment, clinical management, and reoccurrence of this cancer is a MUC1 peptide fragment: cancer antigen 15-3 (CA 15-3). Herein, an immuno-fluorescence assay for CA 15-3 was developed;this ALYGNSA system consists of a protein biolinker (Protein G’) adsorbed onto Poly (methyl methacrylate) (PMMA). The unique interaction of Protein G’ with PMMA, a thermo-plastic polymer has been demonstrated to improve human IgG capture antibody alignment/ orientation and result in greater assay sensitivity. Indeed a previous report (HEALTH 1 325 - 329, 2009) on the shed extracellular domain of HER-2/neu revealed a 10-fold increase in sensitivity of the ALYGSNA assay over a control ELISA assay. Results from this ALYGNSA assay study revealed that a 16-fold increase in detection (≤0.94 U/mL) of CA 15-3 was found in comparison to a commercial control ELISA kit (≤15 U/mL). In conclusion, this enhanced sensitivity of the ALYGNSA assay for CA 15-3, may provide insights into the role/function of this biomarker in normal, as well as, breast cancer and other epithelial cancers.展开更多
The common goal within the overwhelming interests in stem cell research is to safely translate the science to patients. Although there are various methods by which this goal can be reached, this editorial emphasizes t...The common goal within the overwhelming interests in stem cell research is to safely translate the science to patients. Although there are various methods by which this goal can be reached, this editorial emphasizes the safety of mesenchymal stem cell(MSC) transplant and possible confounds by the growing information on cancer stem cells(CSCs). There are several ongoing clinical trials with MSCs and their interactions with CSCs need to be examined. The rapid knowledge on MSCs and CSCs has now collided with regards to the safe treatment of MSCs. The information discussed on MSCs can be extrapolated to other stem cells with similar phenotype and functions such as placenta stem cells. MSCs are attractive for cell therapy, mainly due to reduced ethical concerns, ease in expansion and reduced ability to be transformed. Also, MSCs can exert both immune suppressor and tissue regeneration simultaneously. It is expected that any clinical trial with MSCs will take precaution to ensure that the cells are not transformed. However, going forward, the different centers should be aware that MSCs might undergo oncogenic events, especially as undifferentiated cells or early differentiated cells. Another major concern for MSC therapy is their ability to promote tumor growth and perhaps, to protect CSCs by altered immune responses. These issues are discussed in light of a large number of undiagnosed cancers.展开更多
Cancer cells with immunogenic properties having altered protein glycosylation, modified blood group substances have been widely studied. Due to the genetic instability occurring during carcinogenesis the glycosyltrans...Cancer cells with immunogenic properties having altered protein glycosylation, modified blood group substances have been widely studied. Due to the genetic instability occurring during carcinogenesis the glycosyltransferases may suffer from posttranslation sequence modification. The author describes 2 autopsy cases, where in the background of the unusual metastatic tumor presentation, incompatible blood group antigenic determinants have been demonstrated using blood group specific lectins and monoclonal antibodies (mAb). In the first case, reported here, a 10-year-old girl developed an acute myeloid leukemia and died in a septic endotoxin shock after successful cytostatic treatment of a juvenile signet ring cell cancer of her colon. At autopsy there were no signs of tumor except bilateral apple-sized mucinous ovarian (Krukenberg) metastases. While she had erythrocyte phenotype of blood group A, the signet ring adenocarcinoma cells expressed blood group B incompatible antigenic determinants with lectin/mAb. In the second case, the autopsy of a 78-year-old female resulted in no macroscopic tumor sign except a moderately enlarged, ham hard spleen. Light microscopy revealed adenocarcinomatous infiltration in the splenic sinusoids. The patient had blood group O, while the metastatic cells in the spleen reacted with Breast Carcinoma Antigen (BioGenex) and incompatible anti-B Banderiaeasimplicifolia agglutinin I and anti-B mAb. It proved to be a case of an occult, completely regressed breast cancer. Based on these observations the expression of tumor specific incompatible blood group antigens might occur from time to time, mostly in adenocarcinomas. Accordingly, blood group-based specific immuno-oncotherapy could be considered in some cancer cases.展开更多
目的探讨乳腺癌摄取^(99)Tc^(m)-甲氧异腈(MIBI)与Ki-67抗原表达的关系,并验证Ki-67预测新辅助化疗(NAC)疗效的价值。方法回顾性分析2018年1月至2020年3月于宁夏医科大学总医院就诊的47例乳腺癌患者NAC前后双时相^(99)Tc^(m)-MIBI SPECT...目的探讨乳腺癌摄取^(99)Tc^(m)-甲氧异腈(MIBI)与Ki-67抗原表达的关系,并验证Ki-67预测新辅助化疗(NAC)疗效的价值。方法回顾性分析2018年1月至2020年3月于宁夏医科大学总医院就诊的47例乳腺癌患者NAC前后双时相^(99)Tc^(m)-MIBI SPECT/CT断层融合显像,分析T/N比值和肿瘤大小在治疗前后的变化及与Ki-67之间的关系。采用两样本t检验、直线相关性及χ^(2)检验分析数据。结果乳腺癌^(99)Tc^(m)-MIBI显像NAC前后20 min T/N比值、2 h T/N比值下降差异有统计意义(P<0.05),肿瘤NAC化疗前后最大径缩小差异有统计学意义(P<0.05);Ki-67高表达组与低表达组患者NAC后T/N比值下降和肿瘤缩小差异均有统计学意义(P<0.05);Ki-67的表达与20 min和2 h T/N比值有相关性(P<0.05)。结论Ki-67抗原表达和乳腺^(99)Tc^(m)-MIBI显像有助于了解肿瘤增殖,Ki-67抗原表达对NAC疗效有预测价值,可用于指导临床治疗。展开更多
基金Supported by grants from the Medicine and Health Care Science and Technology Development Plan Projects Foundation of Shandong Province(No.2014WS0282,2014WSA11003)Application Technology Research and Development Project Foundation in Rizhao City(No.2014SZSH02)+1 种基金Science and technology innovation project of medical workers in Shandong Province(No.201515)the Scientific Research Projects of Jining Medical College(No.JY2013KJ051)
文摘Objective This study aimed to evaluate serum and nipple discharge levels of carcinoembryonic antigen(CEA) and cancer antigen 153(CA153) and tissue cyclooxygenase-2(COX-2) expression in breast cancer cases and associations of these proteins with breast cancer metastasis.Methods The immunohistochemical Ultra Sensitive^(TM) S-P method was used to detect COX-2 expression in 77 cases of invasive breast carcinoma. Of these cases, 52 exhibited CEA and CA153 in both serum and nipple discharge(electrochemiluminescence method), and associations of these biomarkers with breast cancer prognosis were studied. Sixty cases of benign breast lesion were selected as a control group. Overall survival of breast carcinoma patients was evaluated. COX-2 expression was evaluated relative to clinicopathological features and CEA and CA153 levels, and its role in invasiveness was investigated.Results Among cases of invasive breast cancer, 72.7%(56/77) were COX-2 immunopositive, compared to 16.7% of benign lesions(χ2 = 66.745, P = 0.000) percentage of positive cells. COX-2 overexpression in breast cancer correlated positively with histological grade(II vs III; χ2 = 4.064, P = 0.043), lymph node metastasis(χ2 = 9.135, P = 0.003), and distant metastasis(χ2 = 8.021, P = 0.003). However, COX-2 expression did not correlate with age(≤ 50 vs 50 years) or tumor size(≤ 5 vs > 5 cm)(χ2 = 0.081, P = 0.776 and χ2 = 3.702, P = 0.054, respectively). Among breast cancer patients, COX-2 overexpression in tumors also correlated with shorter overall survival(P < 0.05). In brief, increased COX-2 expression correlates with worse prognosis and shorter overall survival. Malignant lesions were associated with significantly higher serum and nipple discharge levels of biomarkers, relative to benign lesions(P < 0.05). These biomarkers were present at significantly higher levels in nipple discharge than in serum(P < 0.05). Furthermore, significantly higher nipple discharge levels of CEA and CA153 were observed in COX-2-positive breast carcinoma patients, compared to COX-2-negative patients(P <0.05). Shorter overall survival in cancer patients group related to COX-2 overexpression in tumors(P < 0.05).Conclusion The study suggests that COX-2 overexpression correlates with poor clinicopathological parameters in breast cancers and might be an important biological marker of invasion and metastasis. The findings of the present study suggest that combined detection of COX-2 tissue expression and CEA and CA153 in serum and nipple discharge could facilitate clinical monitoring and diagnosis of metastasis in patients with breast cancer.
文摘Background and Objectives: Breast cancer is among the most common causes of cancer related mortality in women worldwide. Early detection and prompt diagnosis of tumor is the first step to prevent cancer-related morbidity and mortality, and a comprehensive understanding of the involved molecular mechanisms can greatly help in this respect. Breast cancer, like many other types of cancer, is caused by a combination of genetic and epigenetic changes such as inactivation of tumor suppressor genes. Materials and Methods: This study was performed on 40 breast cancer patients and 40 healthy controls. Quantitative real time reverse transcription polymerase chain reaction (real time qRT-PCR) was used to assess the expression of carcinoembryonic antigen (CEA) and mammaglobin mRNA in the peripheral blood of patients and healthy controls. The two groups were compared using t-test. Results: The two groups were not significantly different in terms of the mean age. Twenty-nine out of 40 cancer patients were positive for CEA mRNA and its sensitivity was calculated to be 72.5%. Twelve out of 40 healthy controls were positive for CEA mRNA. Twenty-six out of 40 patients were positive for mammaglobin mRNA indicative of 65% sensitivity while only five out of 40 healthy controls were positive for mammaglobin mRNA. Conclusion: Both CEA and mammaglobin mRNA had high sensitivity in cancer patients;thus, they can be used for screening and early detection of breast cancer patients. Further studies with larger sample sizes are required to confirm the current findings.
基金financial support from the University Grants Commission,New Delhi,in the form of UGC-BSR Research Fellowship under the UGC-SAP-DRS-III programme is gratefully acknowledged
文摘Breast cancer is the leading cause of death among women worldwide.Chemoprevention and chemotherapy play beneficial roles in reducing the incidence and mortality of cancer.Epidemiological and experimental studies showed that naturally-occurring antioxidants present in the diet may act as anticancer agents.Identifying the abnormalities of cellular energy metabolism facilitates early detection and management of breast cancer.The present study evaluated the effect of tangeretin on cellular metabolic energy fluxes in 7,12-dimethylbenz(a)anthracene(DMBA)-induced proliferative breast cancer.The results showed that the activities of glycolytic enzymes significantly increased in mammary tissues of DMBA-induced breast cancer bearing rats.The gluconeogenic tricarboxylic acid(TCA) cycle and respiratory chain enzyme activities significantly decreased in breast cancer-bearing rats.In addition,proliferating cell nuclear antigen(PCNA) was highly expressed in breast cancer tissues.However,the activities of glycolytic enzymes were significantly normalized in the tangeretin pre- and post-treated rats and the TCA cycle and respiratory chain enzyme activities were significantly increased in tangeretin treated rats.Furthermore,tangeretin down-regulated PCNA expression on breast cancerbearing rats.Our study demonstrates that tangeretin specifically regulates cellular metabolic energy fluxes in DMBA-induced breast cancer-bearing rats.
文摘Breast cancer is the second leading cause of cancerrelated deaths in women worldwide;a prime cancer biomarker to aid in the diagnosis, directed treatment, clinical management, and reoccurrence of this cancer is a MUC1 peptide fragment: cancer antigen 15-3 (CA 15-3). Herein, an immuno-fluorescence assay for CA 15-3 was developed;this ALYGNSA system consists of a protein biolinker (Protein G’) adsorbed onto Poly (methyl methacrylate) (PMMA). The unique interaction of Protein G’ with PMMA, a thermo-plastic polymer has been demonstrated to improve human IgG capture antibody alignment/ orientation and result in greater assay sensitivity. Indeed a previous report (HEALTH 1 325 - 329, 2009) on the shed extracellular domain of HER-2/neu revealed a 10-fold increase in sensitivity of the ALYGSNA assay over a control ELISA assay. Results from this ALYGNSA assay study revealed that a 16-fold increase in detection (≤0.94 U/mL) of CA 15-3 was found in comparison to a commercial control ELISA kit (≤15 U/mL). In conclusion, this enhanced sensitivity of the ALYGNSA assay for CA 15-3, may provide insights into the role/function of this biomarker in normal, as well as, breast cancer and other epithelial cancers.
基金Supported by The Department of Defense and FM Kirby Foundation
文摘The common goal within the overwhelming interests in stem cell research is to safely translate the science to patients. Although there are various methods by which this goal can be reached, this editorial emphasizes the safety of mesenchymal stem cell(MSC) transplant and possible confounds by the growing information on cancer stem cells(CSCs). There are several ongoing clinical trials with MSCs and their interactions with CSCs need to be examined. The rapid knowledge on MSCs and CSCs has now collided with regards to the safe treatment of MSCs. The information discussed on MSCs can be extrapolated to other stem cells with similar phenotype and functions such as placenta stem cells. MSCs are attractive for cell therapy, mainly due to reduced ethical concerns, ease in expansion and reduced ability to be transformed. Also, MSCs can exert both immune suppressor and tissue regeneration simultaneously. It is expected that any clinical trial with MSCs will take precaution to ensure that the cells are not transformed. However, going forward, the different centers should be aware that MSCs might undergo oncogenic events, especially as undifferentiated cells or early differentiated cells. Another major concern for MSC therapy is their ability to promote tumor growth and perhaps, to protect CSCs by altered immune responses. These issues are discussed in light of a large number of undiagnosed cancers.
文摘Cancer cells with immunogenic properties having altered protein glycosylation, modified blood group substances have been widely studied. Due to the genetic instability occurring during carcinogenesis the glycosyltransferases may suffer from posttranslation sequence modification. The author describes 2 autopsy cases, where in the background of the unusual metastatic tumor presentation, incompatible blood group antigenic determinants have been demonstrated using blood group specific lectins and monoclonal antibodies (mAb). In the first case, reported here, a 10-year-old girl developed an acute myeloid leukemia and died in a septic endotoxin shock after successful cytostatic treatment of a juvenile signet ring cell cancer of her colon. At autopsy there were no signs of tumor except bilateral apple-sized mucinous ovarian (Krukenberg) metastases. While she had erythrocyte phenotype of blood group A, the signet ring adenocarcinoma cells expressed blood group B incompatible antigenic determinants with lectin/mAb. In the second case, the autopsy of a 78-year-old female resulted in no macroscopic tumor sign except a moderately enlarged, ham hard spleen. Light microscopy revealed adenocarcinomatous infiltration in the splenic sinusoids. The patient had blood group O, while the metastatic cells in the spleen reacted with Breast Carcinoma Antigen (BioGenex) and incompatible anti-B Banderiaeasimplicifolia agglutinin I and anti-B mAb. It proved to be a case of an occult, completely regressed breast cancer. Based on these observations the expression of tumor specific incompatible blood group antigens might occur from time to time, mostly in adenocarcinomas. Accordingly, blood group-based specific immuno-oncotherapy could be considered in some cancer cases.
文摘目的探讨乳腺癌摄取^(99)Tc^(m)-甲氧异腈(MIBI)与Ki-67抗原表达的关系,并验证Ki-67预测新辅助化疗(NAC)疗效的价值。方法回顾性分析2018年1月至2020年3月于宁夏医科大学总医院就诊的47例乳腺癌患者NAC前后双时相^(99)Tc^(m)-MIBI SPECT/CT断层融合显像,分析T/N比值和肿瘤大小在治疗前后的变化及与Ki-67之间的关系。采用两样本t检验、直线相关性及χ^(2)检验分析数据。结果乳腺癌^(99)Tc^(m)-MIBI显像NAC前后20 min T/N比值、2 h T/N比值下降差异有统计意义(P<0.05),肿瘤NAC化疗前后最大径缩小差异有统计学意义(P<0.05);Ki-67高表达组与低表达组患者NAC后T/N比值下降和肿瘤缩小差异均有统计学意义(P<0.05);Ki-67的表达与20 min和2 h T/N比值有相关性(P<0.05)。结论Ki-67抗原表达和乳腺^(99)Tc^(m)-MIBI显像有助于了解肿瘤增殖,Ki-67抗原表达对NAC疗效有预测价值,可用于指导临床治疗。