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Purpose@#RIOK1 has been proved to play an important role in cancer cell proliferation and migration in various types of cancers—such as colorectal and gastric cancers. However, the expression of RIOK1 in breast cancer (BC) and the relationship between RIOK1 expression and the development of BC are not well characterized. In this study, we assessed the expression of RIOK1 in BC and evaluated the mechanisms underlying its biological function in this disease context. @*Materials and Methods@#We used immunohistochemistry, western blot and quantitative real-time polymerase chain reaction to evaluate the expression of RIOK1 in BC patients. Then, knockdown or overexpression of RIOK1 were used to evaluate the effect on BC cells in vitro and in vivo. Finally, we predicted miR-204-5p could be a potential regulator of RIOK1. @*Results@#We found that the expression levels of RIOK1 were significantly higher in hormone receptor (HR)–negative BC patients and was associated with tumor grades (p=0.010) and p53 expression (p=0.008) and survival duration (p=0.011). Kaplan-Meier analysis suggested a tendency for the poor prognosis. In vitro, knockdown of RIOK1 could inhibit proliferation, invasion, and induced apoptosis in HR-negative BC cells and inhibited tumorigenesis in vivo, while overexpression of RIOK1 promoted HR-positive tumor progression. MiR-204-5p could regulate RIOK1 expression and be involved in BC progression. @*Conclusion@#These findings indicate that RIOK1 expression could be a biomarker of HR-negative BC, and it may serve as an effective prognostic indicator and promote BC progression.
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Background and purpose:With lifestyle shifts, incidence and mortality patterns for cancers have changed. In order to provide scientiifc basis for the government to control the diseases, this study investigated the can-cer mortality among residents of Rugao city for the period 2008 through 2012.Methods:The epidemiological study of cancer mortality rates among residents of Rugao city was carried out. The results were analyzed with Excel and SPSS software.Results:Cancer was the leading cause of death. The crude mortality rate was 264.55/100 000 and the SMR (standardized mortality ratio) was 155.04/100 000. The mortality of cancer was higher in the male than in the female patients. The top 5 causes of cancer death among residents of Rugao city were esophageal cancer, liver cancer, lung cancer, gastric cancer, and pancreatic cancer for the period 2008 through 2012. Pancreatic cancer and colon, rectum and anus cancer were the iffth and sixth leading causes of cancer death in both male and female, respectively. Nervous system tumor was the eight leading cause of cancer death, whereas osteosarcoma was the tenth. Prostate cancer was the ninth leading cause of cancer death in men. The mortality of cancer was signiifcantly higher in the elderly group than in any other age group. The most common causes of cancer death in adolescents and young adults were leukemia,nervous system tumor and osteosarcoma. The top ifve of potential years of life lost (PYLL) were liver cancer, esopha-geal cancer, lung cancer, gastric cancer and leukemia. The top ifve of average years of life lost (AYLL) were leukemia, nervous system tumor, liver cancer, breast cancer and osteosarcoma.Conclusion:Cancer has been the major cause of death in residents of Rugao city. The mortality of cancer was higher in the male than in the female. Cancer mortality was also higher in the elderly group than in any other age group. Pancreatic cancer was the iffth leading cause of cancer death. Researchers should raise awareness of cancer prevention in the residents. Treatment and prevention of pancreatic cancer, nervous system tumor and osteosarcoma should be emphasized in the prevention of the most common types of cancer. Besides, researchers should focus on early diagnosis, early treatment of cancer and screening of high-risk groups to improve the quality of life of cancer patients.
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Objective To establish the quality control method for Antenoron filiforme. Methods Antenoron filiforme was identified by TLC,and the content of gallic acid was determined by HPLC. The chromatographic conditions were as follows:Aichrom Reliasil C18 column (4. 6 mm×250 mm,5 μm) was used with mobile phase consisted of acetonitrle-0. 1% phosphoric acid(4∶96),the flow rate was 1. 0 mL·min-1 ,and the detection wavelength was 270 nm. Results TLC identification for An-tenoron filiforme was highly specific. Gallic acid content had a good linearity in the range of 0. 08-0. 56μg (r=1. 000 0). The av-erage recovery was 101. 12% and RSD was 2. 20% (n=6). Conclusion The method is simple, feasible,and reproducible, and can be used for the quality control of Antenoron filiforme.
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In vivo tumor imaging technique method based on bioluminescence principle was established to evaluate the anti-tumor effect of paclitaxel mixed micelle (PMM). MDA-MB-231 tumor cells with luciferase reporter vectors were firstly implanted into nude mice, and subsequently the luciferase substrate was regularly injected during intraperitoneal administration of PMM. Then the tumor size, growth and the intensity of light signals were monitored with in vivo imaging technique. The method of luciferase tumor in vivo imaging could be real-time, reliable and exact in labeling and reflecting the growth of tumors, and the observed results were consistent with that by conventional method, so it would be a feasible approach to study anti-tumor effect of drugs. The anti-tumor effect of paclitaxel mixed micelle was observed by this method, and the results showed that this formulation could inhibit growth of tumor, and the anti-tumor rate of it was about 85%.
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OBJECTIVE: In recent years, in the field of neurosurgery, people have tried to study the mesenchymal stem cells(MSCs) transplantation for treatment of spinal cord injury and review its related studies.DATA SOURCES: We did a computer-search of Medline for spinal cord injury related articles published in English from January 1990 to November 2004, with the key words of "mesenchymal stem cells, transplantation,spinal cord injury". Meanwhile, We also searched Chinese Biomedical Literature Database (CBM) for bone marrow-derived mesenchymal stem cells for transplantation of spinal cord injury related articles published from January 1990 to November 2004, with the key words of "mesenchymal stem cells, transplantation, spinal cord injury" in Chinese.STUDY SELECTION: All articles were selected firstly, and those relevant to progression of mesenchymal stem cells transplantation in spinal cord injury therapy were collected. The full texts of the rest literatures were looked up and the latest evolutional articles were enrolled.DATA EXTRACTION: A total of 32 articles about the mesenchymal stem cells transplantation in spinal cord injury therapy were collected. After the exclusion of repetitive or similar studies, 19 articles met our criteria.DATA SYNTHESIS: Aiming at the spinal cord injury therapy by means of mesenchymal stem cells transplantation, the viewpoints of collected articles were summarized. We found bone marrow derived mesenchymal stem cells could supply lesioned part as filler. Directional regeneration accomplishes the construction of the function that transfers up and down for the nerve cell anchor through surrounding structure. The microenvironment which can inhibit the regeneration of the glial cell, protect the survival of nerve cell body, promote the regeneration of autogenic nerve cells shall be created in transplant. The international successful experience was introduced emphatically, and the most hopeful outlook was suggested.CONCLUSION: The transplanted MSCs survive, migrate to the injury site and differentiate into neurons and astrocytes. Transplantation of MSCs following spinal cord injury may improve the recovery of spinal function and may be an effect way in treating spinal cord injury.