CD44 is a transmembrane receptor protein, belonging to the family of adhesion molecules, which is involved in cell-cell and cell-matrix interactions by binding with ligands such as hyaluronan. Recently a lot of researches reported that CD44 and its variant isoforms, especially CD44v6, are usually aberrantly expressed in many kinds of tumor cells, which is correlated with the invasion and metastasis of tumors and the prognosis of the patients.

Objective To study the expression of chemokine stromal cell-derived factor-1 and its receptor CXCR4 in gallbladder carcinoma and evaluate the relationship between the expression of SDF-1 and CXCR4 protein and the clinicopathology,and lymph node metastasis of gallbladder carcinoma.Methods The expression of SDF-1 and CXCR4 protein in 41 cases of gallbladder adenoma carcinoma was examined by immunohistochemical technique(SP),and the relation of SDF-1/CXCR4 biology axis to clinicopathological parameter was also analyzed.Results The positive expression rate of SDF-1 and CXCR4 in gallbladder carcinoma was 68.3%(28/41)and 51.2%(21/41)respectively,in normal gallbladder mucous was 5%(1/20)and 5%(1/20)respectively,in cholecystitis and gallstone was 6.7%(6/90)and 5.6%(5/90)respectively,and there is significantly different among the three groups in SDF-1 and CXCR4 expression values(P＜0.001,P＜0.001,respectively).There is significant difference among histological grade group,Nevin stage group,histological differentiation,lymph node or distal organ metastasis group in SDF-1 and CXCR4 expression value(P＜0.05,respectively).However,there is no significant difference among sex group,age group,tumor size group,and gallstone presence group in SDF-1 and CXCR4 expression value(P＞0.05,respectively).The expression of SDF-1 was positively correlated to CXCR4(r=0.68,P＜0.01).Conclusion Up-regulated SDF-1 and CXCR4 is associated with the carcinogenesis and metastasis of gallbladder carcinoma.

Objective Shh and Ptch have been known to play critical roles in the hedgehog pathway and the hedgehog pathway activation occurs in the gastrointestinal cancers. This study was to detect the expression of Shh and Ptch in gallbladder carcinoma, and explore their correlation to gallbladder carcinoma. Methods The expression of Shh and Patch protein in 41 specimens of primary gallbladder carcinoma, 20 specimens of normal gallbladder and 21 specimens of adenoma tissue were assessed by immunohistochemistry.Results The positive expression rate of Shh and Ptch in gallbladder carcinoma was 75.6% (31/41) and 78.0% (32/40) respectively, in normal gallbladder mucous was 5% ( 1/20 ) and 5% ( 1/20 ) respectively,in gallbladder adenoma was 4.7% ( 1/21 ) and 9.6% (2/21) respectively, and there was significant differenee between the three groups in Shh and Patch expression values(P ＜0.001 ). However, there was no significant difference between age group, histological grade group, histologic type group, Nevin stage group,lymph node or distal organ metastasis group, and gallstone presence group in Shh and Ptch expression value (P ＞ 0.05, respectively). The expression of Shh was positively correlated to Ptch (r = 0.72, P ＜ 0.01 ).Conclusion These data support our hypothesis that Hh signaling is dysregulated in human gallbladder carcinognesis.

Objective To study clinical and pathological characteristics and effects of arthroscopic treatment of ankle soft tissue impingement syndrome(ASTIS). Methods A total of 21 cases of ASTIS underwent arthroscopic operations from November 2000 to April 2005.The impingement soft tissues were removed under arthroscope at 13.6?9.9 months after injury.The resected tissues were pathologically examined following surgery.The efficacy of arthroscopy was assessed using the American Orthopaedic Foot and Ankle Society(AOFAS) rating scores. Results Arthroscopic findings showed the most common impingement tissue was synovium(20 cases),followed by distal fascicle of the anterior tibiofibular ligament(5 cases),fibrous scar tissue(4 cases),anterior talofibular ligament(3 cases),and meniscoid tissue(3 cases).ASTIS accompanying cartilage injuries was found in 16 cases.All the cases were followed for 7~60 months(mean,34.3?9.4 months).The AOFAS scores significantly increased postoperatively than preoperatively,with total scores from 67.0?9.7 to 94.0?6.4(t=-7.205,P=0.000) and subjective scores from 20.7?6.6 to 35.7?4.9(t=-5.003,P=0.000). Conclusions Ankle soft tissue impingement syndrome often occurs after ankle sprain along the anterolateral portion of the ankle.Common impingement tissues are synovium,ligament,scar tissue,and meniscoid tissue.Arthroscopic treatment of ankle soft tissue impingement syndrome is satisfactory.

Autophagy is an important homeostatic cellular recycling mechanism responsible for degrading injured or dysfunctional cellular organelles and proteins in all living cells. Aging is a universal phenomenon characterized by progressive deterioration of cells and organs due to accumulation of macromolecular and organelle damage. Growing evidences indicate that the rate of autophagosome formation and maturation and the efficiency of autophagosome/lysosome fusion decline with age. Dysfunctional autophagy has also been observed in age-related diseases. Autophagy disruption resulted accumulation of mutated or misfolded proteins is the essential feature of neurodegenerative disorders. However, in cancers, fibroproliferative diseases or cardiovascular diseases, autophagy can play either a protective or destructive role in different types of disease, and even in different stages of the same disease. The review will discuss the cellular and molecular mechanisms of autophagy and its important role in the pathogenesis of aging and age-related diseases, and the ongoing drug discovery strategies for therapeutic intervention.
Aging ; Autophagy ; Drug Discovery ; Humans ; Lysosomes ; metabolism ; Neurodegenerative Diseases ; Phagosomes ; metabolism ; Protein Folding

End stage liver disease is a serious threat to human health.Existing conventional therapies are far from ideal,and orthotopic liver transplantation is limited by the lack of donor liver.A new therapy,transplantation of hepatic stem cell,is a promising approach.Hepatic oval cells are hepatic stem/progenitor cells(HSC/HPC)during hepatic regeneration,and they are being referred to as hepatic precursor cells.It got its name because of its oval nucleus,high nuclear/cytoplasmic ratio and other morphological features.Research has shown increasingly importance in the knowledge of hepatic oval cells.There are many signaling pathways in hepatic oval cells activation and proliferation.As a branch of the Wnt signaling pathway,Wnt/β-catenin signaling pathway has a significant effect on hepatic oval cells activation and proliferation.However,the exact mechanisms of this process have not been completely elucidated.This review describes the role of Wnt/β-catenin signaling pathway in hepatic oval cell activation and proliferation.

Objective To analyze the CT staging and evaluate its role in assessing the resectability of the gallbladder carcinoma.Methods The CT scans of 47 patients who had pathologically confirmed gallbladder carcinoma were retrospectively reviewed and the CT stages of gallbladder carcinoma were used to evaluate the resectability.Results Before operation,three patients were in stage Ⅰ(6.4%,3/47),14stageⅡ(29.8%,14/47),10 stageⅢ(21.7%,3/47),20 stage Ⅳ(42.6%,20/47),however,after operation,three patients were in stage Ⅰ(6.4%,3/47),14 stageⅡ(29.8%,14/47),8 stage Ⅲ(17.0%%,8/47),22 stage Ⅳ(42.6%,20/47).The accurate rate of CT staging confirmed by operation was 91.5%(43/47).The treatment procedures of gallbladder carcinomas included radical operation,palliative excision and exploratory laparotomy.For 47 patients with gallbladder carcinomas,radical operation was performed in 30 cases(3 stage Ⅰ,14 stageⅡ,7 stage Ⅲ,6 stage Ⅳ),palliative excision 15 cases(1 stage Ⅲ,14 stage Ⅳ),exploratory laporatory 2 eases(2 stage Ⅳ).Conclusion The staging of gallbladder carcinoma with CT may provide definite value in evaluating respectability of gallbladder carcinoma.

Objective To investigate the effects of acceptance and commitment therapy on postoperative psychosocial adaptation in breast cancer patients. Methods 120 breast cancer patients were divided into two groups by random number table:58 cases in the observation group and 62 cases in the control group. They all received routine nursing care and the observation group also received acceptance and commitment therapy intervention, including acceptance, cognitive diffusion,being present, self as context, values and committed action. Psychological and Social Adaptation Questionnaire for Breast Cancer Patient (PSAQ-B) was used to investigate their psychosocial adaptation before and after the intervention. Results The intervention group was observed in patients with anxiety/depression, self-esteem and self-acceptance, attitude, sense of belonging, self-control and self-efficacy score was respectively (30.14 ± 5.08), (31.68 ± 5.77), (30.03 ± 5.35), (33.68 ± 5.56), (32.86 ± 5.63) points, the control group were (23.75 ± 3.68), (28.87±4.86), (26.12 ± 4.53), (29.18 ± 5.26), (29.06 ± 4.75) points, the difference between 2 groups was statistically significant (t = 6.016- 6.540, all P < 0.05). Conclusions Acceptance and commitment therapy can effectively improve the psychosocial adaptation status in breast cancer patients after surgery to help improve their quality of life.

Objective To investigate effect of dexmedetomidine on safety,validity and superiority in patients undergoing scoliosis surgery under propofol sufentanil anesthesia.Methods Forty patients undcrgoing elective posterior scoliosis surgery were randomly divided into groups D and C (n =10 each).Dexmedetomidine 0.8 μg/kg followed by 0.2 μg/(kg · h) and equal volume were infused at the 10 min before anesthesia induction in two groups,respectively.Hemodynamic parameters were observed at the 10 min before anesthesia induction (T1),3 min (T2) after anesthesia induction,1 min (T3) after intubation,at the beginning of wake-up test (T4),at the end of the test (T5),and 6 min (T6) after deepen anesthesia,respectively.Meanwhile the wake-up time,hemodynamic parameters,success rate of arousal,incidence agitation,and the bleeding volume during the test were also recorded.Results Successive rate of arousal awakening time between two groups had no statistical significance (P ＞ 0.05).Less incidence of agitation was found in group D compared to group C (P ＜ 0.05).The bleeding volume during the test was significantly less in group D (P ＜ 0.05).The hemodynamics was more smoothly during the operation in group D compared to group C (P ＜ 0.05).Conclusions Dexmedetomidine auxiliary propofol and sufentanil anesthesia can effectively implement intraoperative wake-up,reduce the amount of bleeding,and the incidence of agitation during the wake-up.The hemodynamics was more smoothly.

0.05).Conclusion The group of 13 months age of infants were rarely infected influenza virus in the first time exposure at the age of ≤4 months due to maternal antibodies protection.Whenas,the group of 8 months age who were exposed at the age of ≥5 months,were more easier infected the influenza virus than the group of 13 months age in the first time exposure at the age of ≤4 months.