OBJECTIVE: The expression of C/EBPα, CK10 in nasal inverted papilloma (NIP) were detected in the study. Further discussed their significance in genesia, development and recurrence of NIP. METHOD: Three groups including nasal cavity mucosae (NM 10 cases), nasal polyp (NP 20 cases) and NIP (30 cases) were selected in the study. Expretion of C/EBPα, CK10 were detected by immunohistochemisty PV-6000 method. RESULT: (1) The different expression of C/EBPα and CK10 in the group of NM, NP and NIP was statistically significant (P < 0.05). (2) The different expression of C/EBPα, CK10 in the group of benign NIP and NIP with atypical hyperplasia was statistically significant (P < 0.05). (3) The different expression of C/EBPα and CK10 in the group of NIP with recurrence and NIP with no recurrence was statistically significant, P < 0.05, respectively. (4) Our result indicate that the relationship of C/EBPα and CK10 (r = 0.578, P < 0.01) was direct correlation. The difference was statistically significant. CONCLUSION In conclusion, the present results describe C/EBPα, CK10 expression in NIP and their possible implication in the regulation of tumor growth and differentiation. C/EBPα and CK10 production may prove useful in terms of a prognostic marker for the recurrence in nasal inverted papilloma.
CCAAT-Enhancer-Binding Proteins ; genetics ; metabolism ; Humans ; Keratin-10 ; genetics ; metabolism ; Nasal Polyps ; genetics ; metabolism ; Neoplasm Recurrence, Local ; Nose ; Nose Neoplasms ; genetics ; metabolism ; Papilloma, Inverted ; genetics ; metabolism

OBJECTIVE: To investigate the significance of expression of COX-2, p21, Ki67 and HPV in nasal inverted papilloma. METHOD: Detecting COX-2, p21, Ki-67 in 30 cases of nasal inverted papilloma (NIP), 20 cases of nasal polyps (NP) and 10 cases of normal nasal mucosa (NM) by two step immunohistochemical method, and HPV virus by flow-through hybridization method. RESULT: The positive expression rate of COX-2 and Ki-67 in NIP, NP and NM group was decreased in turn, COX-2 had significant difference in the groups(χ2 = 30.00, P< 0. 05); the positive expression rate of Ki-67 had significant differences between NIP and NM group (χ2 = 8. 533, P<0. 05). The expression of COX-2 in NIP tissues was positively correlate with that of Ki-67 by using Spearman rank correlation analysis (r=0.78, P<0.05). Expression of p21 were not observed in NIP group. The positive rate of HPV was 26. 67% in 30 cases of NIP, all of HPV16 type. CONCLUSION COX-2, Ki-67 and HPV infection have certain correlation with the occurrence of NIP. The occurrence of NIP has relationship with inflammatory reaction mediated by COX-2. Ki-67 can well reflect the proliferation activity of tumor cells, and can be used to measure the proliferation rate of nasal inverted papilloma. The COX-2 and Ki-67 have a synergistic role in the pathogenesis of NIP. p21 has no significant relationship with the incidence of NIP. HPV infection is related to the pathogenesis of NIP, but not as a;major factor in the pathogenesis of NIP.
Case-Control Studies ; Cyclin-Dependent Kinase Inhibitor p21 ; biosynthesis ; Cyclooxygenase 2 ; biosynthesis ; Humans ; Ki-67 Antigen ; biosynthesis ; Nasal Mucosa ; Nasal Polyps ; Nose Neoplasms ; genetics ; virology ; Papilloma, Inverted ; genetics ; virology ; Papillomavirus Infections

The zinc finger protein A20 exists in many kinds of ceils in the body and plays multiple roles in physiological and pathological processes such as regulation of immune response,inflammatory diseases and cancers by inhibiting cell apoptosis induced by tumor necrosis factor (TNF) and restricting NFKB signaling pathway.Recently,the role of A20 in generation and development of tumors draws wide attention,hence,we summarized recent research progress of the relation between A20 and cancer in this review.

ObjectiveThis study was to evaluate the effects of different pneumoperitoneum used in laparoscopy on in vitro tumor cells growth. Methods 3H-TdR incorporation was used to compare the DNA synthesis (CPM value) of tumor cells after exposure to simulated laparoscopic environments, composed of carbon dioxide, helium and room air, respectively. Results At 24 hours after pneumoperitoneum, compared with group of helium, air and control, CPM increased in group of carbon dioxide (F=47.576 5,P0.05). At 48,72 and 96 hours, pneumoperitoneum, compared with helium group, air group and control group, CPM increased significantly in carbon dioxide group (F=116.183,1082.92 and 5116.75, P0.05). Conclusion Carbon dioxide promotes tumor cells growth, while helium restrains the growth of tumor cells. [

Objective To observe the level of autophagy induced by TRAIL in TT cell line and identify the role of autophagy in TRAIL-inducing apoptosis of TT cell line.Methods The growth inhibition of TT cells was measured by MTT assay.MDC staining was used to identify the happening of autophagy.Annexin V/PI double staining was used to analyze the apoptosis rate of TT cells by flowcytometry.The protein expression of caspase-8 and Beclin1 was detected by Western blot.Results ① The growth inhibition ratio of TT cells induced by TRAIL at the concentration of 250,500,1000 and 2000 ng/ml was (3.02 ± 1.82)％,(4.87 ± 1.45)％,(7.51 ± 1.57) ％,(12.76 ± 3.23) ％ respectively,which suggested significant resistance of TT cells to TRAIL.② MDC-labeled green light vesicles was significantly increased after the treatment of TRAIL for 48 h.③ The apoptosis rate of TT cells induced by TRAIL at the concentration of 500 ng/ml and 1000 ng/ml after the pretreat ment of 3-MA for 4 h was(17.83 ± 1.54) ％ and(27.81 ± 1.79) ％ respectively,which was significantly higher than the apoptosis rate induced by TRAIL(3.70 ± 0.34) ％,(6.55 ± 0.59) ％ alone and that induced by 3-MA(7.71 ± 0.64) ％ (t =3.282,P ＜ 0.05 ; t =7.830,P ＜ 0.01).④ The combination treatment of TRAIL and 3-MA increased the cleavage of caspase-8 and down-regulated the expression of Beclin 1.Conclusion Autophagy induced by TRAIL may contributes to the resistance of TT cells to TRAIL,which can be reversed by the inhibition of autophagy.

OBJECTIVE: The study is to evaluate our results of patients with sinonasal inverted papilloma (SIP) undergoing endoscopic sinus surgery and to investigate the recurrence relative factors of SIP. METHOD: A retrospec- tive analysis was performed of medical records for 54 cases SIP treated with endoscopic resection. Compared to pre operation imaging evaluation and intraoperative observation, efficacy assessments included endoscopy during follow-up after operation and combined with CT examination results. RESULT: The incidence of 54 cases with ethmoid sinus, part of the lateral wall of the nasal cavity was higher. The recurrence rate was higher in the cases invaded front and/or inferior wall of maxillary sinus, frontal recess. There was no case with middle turbinate. Canceration with the same time accounted for 1.85%. CONCLUSION Misdiagnosis as polyps, the lesion sites of tumour, involving the frontal recess, front and inferior wall of maxillary sinus are the risk factors of recurrence. The preoperative accurate judgment of the primary tumor site and surgical resection completly are the most effective means of preventing recurrence. Postoperative endoscopy examination combined with CT examination is an effective means for the evaluation of recurrence.
Endoscopy ; Ethmoid Sinus ; Frontal Sinus ; Humans ; Maxillary Sinus ; Nasal Cavity ; Neoplasm Recurrence, Local ; Papilloma, Inverted ; surgery ; Papillomavirus Infections ; Paranasal Sinus Neoplasms ; surgery ; Turbinates

Objective To explore the reason of misdiagnosis and discuss the reoperation in thyroid carcinoma.Methods The data of 77 patients that had reoperation because of misdiagnosis were analyzed.Results The daignosis of all 77 cases were only based on pre-operative physical and uhrasound examination.The post-reoperative follow up (3～41 monthes):no case was found local recurrence.Conclusions The preoperative frozen section may avoid misdaignosis and the effect of reoperation for misdaignosed cases are satisfactory.

Objective To study the effect and related mechanism of celecoxib on tumor necrosis factorrelated apoptosis-inducing ligand(TRAIL) induced apoptosis of medullary thyroid cancer TT cell line.Methods MTT assay was used to measure the growth inhibition induced by TRAIL and celecoxib alone and their combination.TT cell cycle distribution was analyzed by flowcytometry.Hochest33258 staining and DNA ladder was used to detect the apoptosis of drug combination on TT cells.Western blot was used detect the protein change of cyclin A,Cdk2,caspase-8,c-FLIP,and RIP.Results ①MTT showed the growth inhibition ratio of TT cell intervened by the combination of TRAIL and celecoxib was 47.53％ ± 1.34％,which was much higher than that intervened by TRAIL(7.75 ％ ± 3.84％)and celecoxib alone.The differences had statistical significance (t test,F =5.234,P ＜0.01);②PI detection found the cells' number in G0/G1 phase in celecoxib group and combination group were increased compared to that in control group and TRAIL group(F =242.694,P ＜ 0.01);③Western blot indicated the expression of Cyclin A and Cdk2 were down regulated,there was no statistic significance;④ The apoptosis morph in nuclus was detected by Hochest33258 staining and showed the karyopycnosis and muclear fragmentation were increased in combination group with the apoptosis rate 24.23％ ± 2.91％,which was much higher than that in TRAIL(5.86％ ± 1.41％) and celecoxib(20％ ± 1.24％) (t test,F =1.824,P ＜0.01),the difference has statistic significance;⑤Western blot illustrated the active schizolysis of casplase-8 was higher and the expression of c-FLIP and RIP was down regulated in combination group.Conclusion celecoxib plays a positive effect on TRAIL-reduced apoptosis of medullary thyroid cancer TT cell line,which may due to the cell cycle arrest at G0/G1 phase,down-regulation of c-FLIP and RIP and subsequent activation of caspase-8.

Objective To discuss the metastasis principle of cervical lymph nodes in CN0 papillary thyroid carcinoma(PTC) and to define the proper surgery scope.Methods Clinical data of the 450 cases of CN0 PTC patients undergoing surgery from Feb.2008 to Feb.2011 in the First Hospital,Jilin University were retrospectively analyzed.Results There were 219 (48.67％) pN + cases and 231 (51.33 ％) pN0 cases.In CN0 PTC cases,lymph node metastasis was most commonly detected in area Ⅵ,about 46.22％ (208/450) (unilateral cancer 41.08％,bilateral cancer 58.09％).The lymph node metastasis rate was 4.44％ (20/450),6.00％ (27/450),and 8.89％ (40/450)respectively in area IIa,area Ⅲ,and area Ⅳ.The metastasis of lymph node was rare in Vb area,only about 2.22 ％ (10/450).No metastasis was found in the 2 cases undergoing area I lymph node dissection.When the tumor diameter was no less than 1.0 cm,capsule invaded or multifocal,male,＜ 45 years old,lymph node metastasis rate was significantly increased (P ＜ 0.05).In addition,when the tumor was located at the upper pole of the thyroid,the lymph node metastasis rate was 33.57％ (48/143) in Ⅱa,Ⅲ,Ⅳ areas in the affected side.When the tumor was at the lower pole of the thyroid,the lymph node metastasis rate was 10.48％ (13/124)in the contralateral area Ⅵ.Conclusion Lymph node metastasis occurs most commonly in area Ⅵ in PTC,followed by area Ⅱ a,area Ⅲ,area Ⅳ.Routine lymph node dissection in area Ⅵ is recommended for the initial surgery.When the tumor diameter is ≥ 1.0 cm,thyroid capsule invasion is involved or more than 3 metastasized lymph nodes were found in area Ⅵ,the range of lymph node dissection should properly be expanded to area Ⅱa-Ⅳ.When the tumor is located at the lower pole of the thyroid,area Ⅵ in the contralateral side should be cleaned.If the tumor is located at the upper pole of the thyroid,area Ⅱa,Ⅲ,Ⅳ in the affected side should be cleaned.