Anterior cruciate ligament (ACL) has two important functional roles, including biomechanics and proprioceptive sense. A groat propr!oceptive sense is a basis to exactly obtain highly functional exercise. ACL injury may block perception and conduction information and seriously influence motion and daily activities. A complete rehabilitation of ACL function depends on rehabilitation of both mechanical structure and proprioceptive sense. Therefore, reconstruction of joint function following ACL injury is focus on reconstruction of both joint biomechanical stability and proprioceptive sense. This study was designed by distribution and function of proprioceptive sense to analyze the altemation of propdoceptive sense following ACE injury, and to investigate the related factors and ways for rehabilitation of propriocaptive sense following ACL reconstruction.

Cell-cycle deregulation leading to excessive cellproliferation is an important mechanism of human tumorigenesis. CDK6 and CDK4 have been found to be significant regulators of cellcycle, particularly in promoting cell -cycle progress. Moreover, these proteins are usually overly active in most tumors and closely related to tumor development. Recently, research has confirmed CDK4/6 as prospective targets for cancer therapy. However, the mechanism of excessive CDK6 activation leading to tumorigenesis is not completely understood. Therefore, further understanding of the role of CDK4/6 in cell -cycle regulatory pathways and celldifferenti-ation is essential, as well as their overexpression in different types of tumors. This information will elucidate the mechanisms of tumor development and treatment. Therefore, this review intends to discuss the structure and biological function of CDK6, the role and mecha-nism of CDK6 in carcinogenesis, and the clinical application of CDK6 inhibitors.

Objective　The aim of this paper was to investigate endothelial dysfunction，platelet activation, and inflammation in elderly hypertensive patients and those complicated with cerebral infarction. Methods　Twenty-eight elderly hypertensive patients complicated with cerebral infarction(within 72 hours after onset of neurological symptoms),thirty-one Stage Ⅰ～Ⅱelderly hypertensive patients and twenty-eight elderly healthy individuals were selected as subjects.Their plasma concentrations of von Willebrand factor(vWF), alpha granule membrane protein-140(GMP-140), and serum concentrations of C-reaction protein(CRP) were examined. Results　Elderly hypertensive patients complicated with cerebral infarction had significantly higher plasma vWF, GMP-140, and serum CRP than elderly hypertensive patients and elderly healthy individuals. Plasma vWF and GMP-140 were higher in elderly hypertensive patients than elderly healthy individuals, whereas serum CRP was increased slightly and there was no significant difference between elderly hypertensive patients and elderly healthy individuals. Conclusion　This study suggests that elderly hypertensive patients complicated with cerebral infarction have obvious endothelial dysfunction, platelet activation, and inflammatory change. Stage Ⅰ～Ⅱ elderly hypertensive patients have obvious endothelial dysfunction and platelet activation as well.

Interleukin 24 ( IL-24) has a good prospect in tumor therapy because it can specifically inhibit proliferation in a variety of tumor cells in vitro and in vivo and induce apoptosis of tumor cells without affecting normal cells .Gene therapies which use recombinant adenovirus as a vector have some limitations that restrict the clinical application of IL-24. In comparison, protein drugs have tremendous advantages .In this paper, the progress in research on IL-24 gene engineering protein is elaborated .

Object To study the causes for the occurrence of red skin and dark green skin of Panax quinquefolius L. during processing and its mechanism. Methods To observe the phenomena and analyze the result which simulated the processing condition of P. quinquefolius based on its components. Results The cross section of P. quinquefolius began to appear light red at 40 ℃, lasting 72 h. Whereas the time of browning was shortened with the temperature rising. The cross section of P. quinquefolius turned green while dipping in solution of Fe 3+ ion of 0 01 mol/L for 25 min. The time of turning green was shortened with the increasing concentration of Fe 2+ , Fe 3+ solution. Conclusion The results show that red skin of P. quinquefolius was caused by the Maillard reaction while drying at the excessive higher temperature. Whereas the complex reaction between phenolic substances in P. quinquefolius and metal ions during processing might result in dark green skin of P. quinquefolius. This expounds the mechanism of red skin and dark green skin turning during the P. quinquefolius processing in the theory.

BACKGROUND:Preliminary experiments have reported the influence of serum and nerve growth factor on olfactory ensheathing cells proliferation in vitro, but there are less studies concerning choice of serum concentration and growth time for in vitro culture of olfactory ensheathing cells.
OBJECTIVE:To find out the influence of different blood serum concentration and growth time on olfactory ensheathing cells from the olfactory mucosa of adult rats based on the growth curve of olfactory ensheathing cells.
METHODS:The olfactory ensheathing cells from the olfactory mucosa of adult rats were separated, culture and identified in vitro. Sulforhodamine B and microplate reader were employed to measure absorbance values and plot growth curve of olfactory ensheathing cells.
RESULTS AND CONCLUSION:When cultured for the same time in blood serum of different concentrations, absorbance values, especial y in the groups 10%, 20%, 30%, 40%, tended to increase with time except the 0%group. When cultured in the same serum for different time, absorbance values increased within the first 9 days, then promoted rapidly in the groups 10%, 20%, 30%, 40%at 13 days, entered the plateau phase at 19 days, and decreased at 23 days;meanwhile, in the other groups (50%, 60%, 70%, 80%, 90%) the absorbance values peaked at the 13th day and then decreased gradual y. These findings indicate that different serum concentrations and different growth time in vitro affect cellgrowth and survival of olfactory ensheathing cells significantly, which should be ful y considered when cells are cultured in an in vitro condition.

BACKGROUND: Acellular dermalmatrix (ADM), as a new material, is generally applied to tissue repair after head and neck tumorectomy. However, hypopharyngeal carcinoma surgery always involves in repair and functional reconstruction of defected tissue; therefore, the application effect of ADM needs to be further studied for repairing laryngopharynx defect. OBJECTIVE: To evaluate the clinical effect of ADM in repairing laryngopharynx defect following tumorectomy. DESIGN, TIME AND SETTING: A retrospective case analysis was performed at the Department of Otolaryngology-Head and Neck Surgery, Institute of Battle Surgery, Daping Hospital, the Third Military Medical University of Chinese PLA from May 2005 to June 2006.PATICIPANTS: A total of 25 male cases aged 45-68 years including 22 patients with tumor in the lateral wall of the unilateral piriform fossa and 3 patients with in the posterior wall of laryngopharynxat were finally diagnosed as squamous cell carcinoma. METHODS: According to clinical stages, patients underwent partial or complete laryngopharyngectomy. ADM was used to repair oropharynx mucosa following the laryngopharyngectomy. However, ADM alone was used to repair piece-shaped oropharynx mucosa, limiting by being unable to complete reconstruction of spatial structure. Therefore, myocutaneous flap or other materials combined with ADM was beneficial for reconstruction of laryngopharyngeal cavity following complete laryngopharyngectomy. MAIN OUTCOME MEASURES: The effect of ADM on functional reconstruction of swallowing, breathing, and pronouncing. RESULTS: A total of 25 patients were included in the final analysis. No patients suffered with the pharyngeal fistula. Only one case encountered the subcutaneous infection at day 20 after surgery, but recovering after regular change of dressing and treatment of antibiotics. About 15 patients who accepted the surgery of partial laryngopharyngectomy suffered with bucking, but after 30-60 days, the symptom relieved, even disappeared, in spite of 3 cases still bucking when they swallowed liquid diet. Breathing function was recovered, and tracheal cannula was removed 6-12 months after surgery. Ten of them who accepted total laryngopharyngectomy had resumption of normal oral diet after 20 days. The follow-up periods after the surgery lasted 12-30 months. The allograft became normal mucosa finally, without rejection or scar formation. The follow-up of 10 patients lasted more than 24 months, one case had relapse of tumor, still alive after the second surgery. CONCLUSION: ADM with perfect histocompatibility and easy operability, can be applied to repair deletion of laryngeal or pharyngeal tissue and recover functions of pronouncing, breathing, and swallowing after tumorectomy. The combined use of ADM and musculo-cutaneous flap was effective and satisfactory.

Objective: To develop novel targeted anticancer medicines for effective treatment of nasopharyngeal carcinoma ( NPC) , a prevalent malignant disease in southern China and southeast Asia.Methods: CNE cells were treated with a novel indolinone IF239 synthesized by our research group. Cell viability was determined by the acid phosphatase assay ( APA). Morphologic changes and adhesion status of CNE cells treated with IF239 were observed under a light microscope. Flow cytometry was used to analyze the cell cycle phases . Key regulating molecules in the cell cycle progression were detected by Western blotting. Results: IF239 had potent cytotoxic effect on CNE cells. The possible antitumor mechanisms of IF239 involved inhibition of cell adhesion and cell cycle arrest in the G2_/M phase. Moreover,G2_/M arrest caused by IF239 was related to up-regulation of both cyclin B1 and the phosphorylation level of CDK1. Conclusion: IF239 has high anticancer activity over CNE cells, and has unique anticancer mechanisms, suggesting that IF239 has promising application potentials.

Background and purpose:Inhibitor of apoptosis-stimulating protein of p53 (iASPP) is one of the ASPP family. It binds to p53 to inhibit the transcriptional activity of p53-target genes and cell apoptosis, which is asso-ciated with tumor formation. Previously, we found a new subtype of iASPP, iASPP splice variant (iASPP-SV), which is a nuclear protein containing 407 amino acid residues and can bind to p53, inhibiting p53 transcriptional activity. However, the relationship of iASPP-SV and breast cancer is still obscure. Therefore, the purpose of this research was to study the role of iASPP-SV on breast cancer tumorigenesis and progression.Methods:5’-rapid ampliifcation of cDNA ends (RACE) was used to identify the 5’-end of iASPP-SV mRNA in MCF-7 cells. HEK 293 cells were transfected with pFLAG-iASPP-SV and pFLAG-iASPP (828). Then Western blot was used to identify whether endogenous iASPP-SV was expressed in HEK 293 cells and 8 types of human tumor cell lines. This study established the stable clones of NIH 3T3 expressing FLAG-iASPP-SV and FLAG-iASPP (828). Cell proliferation assay, colony formation and soft agar colony formation assay were used to identify whether iASPP-SV and iASPP (828) can promote cell proliferation and iASPP-SV is an oncogene. Real-time lfuorescent quantitative polymerase chain reactive (RTFQ-PCR) was used to de-tect the levels of iASPP-SV and iASPP (828) mRNA in primary breast cancers. Luciferase assays were used to identify the relationships between iASPP-SV, iASPP (828), p53 and NF-κB p65.Results:The study identiifed that iASPP-SV was encoded by previously reported NF-κB p65 subunit (RelA)-associated inhibitor (RAI), and endogenously expressed in many human cancer cell lines. Analysis of cell proliferation, colony formation assay and soft agar assay for colony formation identiifed that similarly to iASPP (828), iASPP-SV promoted tumor cell proliferation and acted as an onco-gene. RTFQ-PCR result showed that the median values of iASPP-SV and iASPP (828) in breast cancers with wild-type p53 were more signiifcantly over-expressed than those of mutant p53. Luciferase assays showed that iASPP-SV and iASPP (828) could suppress NF-κB p65 transcriptional activity. Thus iASPP family may participate in the regulation of p53 and NF-κB activity, which imply that iASPP perhaps shows pro- or anti-survival activities when it interacts with different proteins.Conclusion:These ifndings indicate that iASPP-SV may be a potential target for breast cancer thera-py.