Substantial evidence supports the relationship between chronic inflammation and cancer development. Numerous studies suggest that chronic inflammatory disease, such as periodontitis, contributes to head and neck squamous cell carcinoma development. Oral squamous cell carcinoma (OSCC) is the most common malignant tumor in the oral and maxillofacial regions. Porphyromonas gingivalis, one of the most important pathogens in association with periodontal disease, might have a potential correlation with OSCC. Along with the development of molecular biological techniques, the association between Porphyromonas gingivalis and OSCC has been greatly emphasized in recent years. This review summarizes the association between these variables and the potential mechanisms involved in such relationship.
Carcinoma, Squamous Cell ; pathology ; Humans ; Mouth Neoplasms ; pathology ; Periodontal Diseases ; Periodontitis ; Porphyromonas gingivalis ; Research

Clinicians should assume the responsibility of nutritional therapy for satisfactory outcomes. They should master knowledge on nutritional metabolism, and participate in the administration of nutritional support. Clinicians should be acquainted with new concepts and standardized techniques in this field, such as different requirement of energy, understanding of early nutritional support, and optimal regimens of enteral or parenteral nutrition.
China ; Enteral Nutrition ; Humans ; Nutritional Support ; Parenteral Nutrition

Child ; Humans ; Tachycardia ; physiopathology ; therapy

Humans ; Metabolic Syndrome

Cardiovascular Diseases ; etiology ; prevention & control ; Humans ; Hypertension ; complications ; Risk Factors

Objective To assess the clinical significance of the expression of p53, p21 protein in breast cancer (BC). Method The expression levels of p53, p21 proteins were examined by immunohistochemical (IHC) SP techniques in 69 BC specimen and 20 paracancinoma breast tissue. Result p53 and p21 proteins were failed to be observed in the paracancer tissue. p53 protein was found in 47.8% of BC, while p21 protein in 43.5% of BC. Along with the declined of BC cell differentiation degree, p53 expression increased significantly and p21 expression declined obviously. Expression of p21 was lower in patients with lymph node metastasis than that in patients without lymph node metastasis (P

BACKGROUND:At present,application revascularization and drug treatment may arrest aggravation of heart function and arrhythmic development,but effectiveness is limited.Infarcted myocardial cells are still impossible to regenerate.How to make necrotic myocardial cell regeneration and diastolic myocardial function is the problem to solve.OBJECTIVE:To analyze the study progress of bone marrow stem cells in treatment of myocardial infarction.RETRIEVAL STRATEGY:A computerized online database of Pubmed was searched to identify articles published from May 2000 to July 2006 with the key words of "the marrow stem-cell,cell transplant,myocardial infarction" in English.Simultaneously,articles published between October 1997 and December 2006 were identified in China Journal Full-text Database with the same key word in Chinese.Sixty-seven articles were retrieved and data were selected primarily.Inclusive criteria:①articles related to the transplantation of bone marrow stem cells for the treatment of myocardial infarction,②in the same field,articles recently published or in authoritative journals.Exclusive criteria:①articles of repetitive study,and ②Meta analysis.LITERATURE EVALUATION:Articles mainly analyzes the transplantation of stem cells for the treatment of myocardial infarction.Of the 30 included articles,10 were reviews and the rest was clinical or basic studies.DATA SYNTHESIS:①Bone marrow stem cells are composed of bone marrow mononuclear cells,hematopoietic stem cells,bone marrow mesenchymal stem cells,endothelial stem/progenitor cells,multipotent adult progenitor cells and so on.②After the transplantation,bone marrow stem cells can differentiate into myocardiocytes,and do effectively electromechanical coupling with receptors.Bone marrow stem cells can promote the angiogenesis in ischemic region,avoid ethical dispute and immunological rejection,and these cells are easy to collect.Bone marrow stem cells are adult stem cells,and its transdifferentiation deserves further study.Many clinical studies showed that autogeneic bone marrow stem cell transplantation for the treatment of acute myocardial infarction and heart failure could be achieved.③Matrix metalloproteinase,stem cell factor and stromal cell chemokine from bone marrow stem cells play important roles in stem cell mobilization,homing and myocardial repair.Tissue injury and high-level multipotential stem cells are two key factors of the differentiation of bone marrow stem cells in myocardial microenvironment.④ Problems in bone marrow stem cell transplantation included cell type,regulatory mechanism of transdifferentiation,optimal time,manner and safety of transplantation,etc.CONCLUSION:Through establishing complete animal model,the possibility of each technique in clinical procedures is explored.Bone marrow stem cells in treatment of acute myocardial infarction may become a new method,which has different from traditional drug treatment,interventional therapy of cardiovascular disease and surgical intervention.

The application management of surgical instrument is introduced from five aspects including risk control, operation rules, quality inspection and metering management, periodical maintenance and prompt service.

Objective To investigate the clinical effect of voriconazole in the treatment of invasive fungal infections in lung cancer patients with radiotherapy and chemotherapy,to provide a reference for clinical treatment. Methods The clinical data of 64 lung cancer patients with radiotherapy and chemotherapy with invasive fungal infec-tions were retrospectively analyzed.According to the treatment methods,they were divided into control group and observation group,32 cases in each group.Fluconazole treatment was used in the control group,and the observation group used voriconazole therapy.The overall response rate,time to return to normal white blood cells and other indica-tors of liver and kidney function were compared between the two groups.Results The effective rate of the observation group was 81.25%,which was significantly higher than 68.75% of the control group,the difference was statistically significant(χ2 =5.876,P=0.008).The temperature recovery,cough disappeared,leukocyte recovery time of the observation group were (3.61 ±0.61)d,(6.11 ±0.81)d,(7.85 ±0.92)d,which were significantly shorter than those of the control group,the differences were statistically significant(t=4.145,P=0.025;t=4.045,P=0.027;t=4.385,P=0.021).The treatment of the two groups had mild liver and kidney damage,and there was no signifi-cant difference between the two groups(all P>0.05 ).Conclusion Voriconazole treatment has good clinical effect for lung cancer patients after radiotherapy and chemotherapy with invasive fungal infections,the treatment period is short,but with mild liver and kidney function impairment,the treatment should strengthen the monitoring.

Aim To evaluate the effect of Cdk7 silencing on the c ell cycle control, the phosphorylation level changes of Cdk2 and pRb in human he patoblastoma HepG2 cell culture in vitro, and to validate Cdk7 as a novel ta rget for anticancer therapeutics.Method Levels of Cdk7 and the phosphorylation levels of Cdk2 and pRb were measured by Western-blotting. DNA c ontents, cell cycle and apoptosis induced by Cdk7 silencing were analyzed by flo w cytometry and ultrastructural changes of cells were observed with transmission electron microscopy.Result The phosphorylation levels of pRb a nd Cdk2 and the levels of Cdk7 decreased in a concentration-dependent manner wh en the concentration was above 100 nmol?L -1. Indice of cells arrested in G 0/G 1 phases and apoptotic cells increased in a dosage-and time-dependent manner, the difference was significant between Cdk7 ASODN and the sense control (P