Risk factors for pancreatic cancer in Wenzhou area / 中华胰腺病杂志

Objective To investigate the risk factors of pancreatic cancer in Wenzhou area.Methods A case control study was conducted on 220 cases with pancreatic cancer and 220 matched controls using conditional logistic regression analysis.Results Univariate analysis showed BMI ＞ 30 kg/m2,smoking,reproductive history,diabetes,cholecystitis,chronic pancreatitis,history of appendectomy,history of partial gastrectomy,history of cancer and familial history of cancer were associated with pancreatic cancer,while multivariate conditional logistic regression analysis showed that the risk factors of pancreatic cancer included smoking (OR =3.624,95％ CI i.474 ～ 8.907),BMI ＞ 30 kg/m2 (OR =1.789,95％ CI 1.030 ～ 3.108),diabetes (OR =3.191,95％ CI 1.094 ～ 9.309),chronic pancreatitis (OR =4.972,95％ CI 1.593 ～ 14.898),and cholecystitis (OR =2.289,95 ％ CI 1.024 ～5.116).Conclusions BMI ＞ 30 kg/m2,smoking and diabetes are risk factors for pancreatic cancer in Wenzhou area.

Key protein expressions in the insulin-like growth factor-1 signal pathway involved in the resistance of ovarian cancer to cisplatin / 中国肿瘤临床

Objective: This study aimed to detect the expression levels of the key proteins involved in the insulin-like growth factor signaling pathway of patients with ovarian cancer. These proteins include insulin-like growth factor-1 (IGF1), insulin-like growth factor-1 receptor (IGF1R), and protein kinase B (AKT). Methods: Ovarian cancer tissues were subjected to drug resistance tests using the ATP-TCA method. IGF1, IGF1R, AKT, and multidrug resistance protein2 (MRP2) expressions were detected in the sera of patients with ovarian cancer by conducting enzyme-linked immunosorbent assay. IGF1, IGF1R, and AKT protein expressions were detected in the surgical specimens by immunohistochemistry. Patients were instructed to monitor their cancer antigen 125 (CA125) levels monthly from the date a patient was discharged to the last day of chemotherapy (or until chemotherapy was completed). A color Doppler ultrasound, CT, or MRI scan was required if CA125 value is abnormal. The total follow-up time was one year. Results: IGF1, IGF1R, and AKT expressions were significantly higher in the cisplatin-resistant group than in the cisplatin-sensitive group (P =0.000 1). Immunohistochemical results showed that IGF1, IGF1R, and AKT expressions were significantly higher in the cisplatin-resistant group than in the cisplatin-sensitive group (P<0.05). The monthly CA125 values of 40 patients were obtained after chemotherapy. In the cisplatin-sensitive group, 18 of the 24 cases exhibited normal CA125 values for more than one year, and the remaining 6 cases maintained normal values for more than half a year. In the cisplatin-resistant group, 16 cases revealed higher than normal CA125 values for half a year after chemotherapy. Recurrent lesions were observed in their color Doppler ultrasound results or MRI scans. Conclusion: Cisplatin resistance in ovarian cancer is strongly correlated with the expressions of IGF1, IGF1R and AKT. IGF1 is a potential candidate for the targeted therapy of ovarian cancer.

Relationship between obstructive sleep apnea-hypopnea syndrome and metabolic syndrome in obese middle-aged and older men / 中华老年医学杂志

Objective To explore the relationship between obstructive sleep apnea-hypopnea syndrome (OSAHS) and metabolic syndrome (MS) in obese middle-aged and older men. Methods We selectively recruited 154 obese middle-aged and older men matched for body mass index (BMI) and age. The polysomnography was performed for diagnosing OSAHS and for discriminating disease severity. The BMI, waist circumference, blood pressure, plasma glucose and lipid profiles were measured and analyzed in all subjects. Appropriate statistical methods were used to compare the components of MS in each group. Logistic regression was taken to elucidate the relationship between OSAHS and MS. Results Compared to control group, severe OSAHS group had significantly lower high density lipoprotein cholesterol level [( 1.03 ± 0.29 ) mmol/L vs. ( 1.31 ± 0. 38) mmol/L,P＜0. 05] and higher fasting glucose [(6.61±1.76) mmol/L vs. (5.47±0.64) mmol/L, P＜0. 05]as well as higher systolic blood pressure [( 133 ± 13) mm Hg vs. ( 125 ± 12) mm Hg, P＜0. 05] and diastolic blood pressure [(99±10) mm Hg vs. (80±5) mm Hg, P＜0. 05]. The prevalence of MS was significantly higher in OSAHS group than in control group (mild OSAHS group: 25.7%,moderate OSAHS group: 46. 5%, severe OSAHS group: 84.4%, control group: 16. 1 %, all P＜0. 01). OSAHS was independently associated with an increased prevalence of MS Odds ratio, 6.16).Conclusions OSAHS is independently associated with MS in obese middle-aged and older men.

Expression and its significance of vascular endothelial growth factor in patients with obstructive sleep apnea-hypopnea syndrome / 中华老年医学杂志

Objective To observe the expression level change of vascular endothelial growth factor (VEGF) in patients with obstructive sleep apnea-hypopnea syndrome (OSAHS), and to explore the relationships of VEGF expression with OSAHS, OSAHS related cardiovascular and cerebrovascular diseases. Methods Polysomnography (PSG) was used to conduct sleep apnea monitoring in 24 OSAHS patients from 6OSAHS popular families and 48 healthy controls with normal physical examination results. The expression of VEGF mRNA was examined by reverse transcriptionpolymerase chain reaction (RT-PCR) analysis, meanwhile, the level of VEGF in plasma was measured VEGF mRNA in PBMC were significantly higher in simple OSAHS group [plasma levels: (205.75±2.79) pg/ml; mRNA: 0. 61±0. 02] than in control group [(168.72±4.64) pg/ml; 0. 47±0. 02,cardiovascular and cerebrovascular diseases group [(288.74 ± 2.73) pg/ml, 1.16 ± 0. 03] than in simple OSAHS group [ ( 205.75 ± 2.79 ) pg/ml, 0. 61 ± 0.02, P ＜ 0. 01]. ( 2 ) There was a positive correlation of the levels of VEGF in plasma and mRNA with AHI as well as systolic and diastolic blood pressure in early morning. There was a negative correlation of the level of VEGF in plasma and VEGF mRNA with the lowest saturation of blood oxygen. There was a positive correlation of the level of VEGF mRNA with AHI as well as systolic and diastolic blood pressure in early morning.Conclusions The level of VEGF in OSAHS significantly increases, which may play a role in the pathophysiology of OSAHS and OSAHS related cardiovascular and cerebrovascular diseases.

An epidemiology study of the relationship between pancreatic cancer and diabetes mellitus / 中华胰腺病杂志

Objective To investigate the relationship between pancreatic cancer and diabetes mellitus (DM). Methods Two hundreds and twenty patients with pancreatic cancer and 300 controls, who suffered from non-digestive tract, non-neoplastic or non-hormone-related disorders, were enrolled from 1997 to 2007. The incidence of diabetes between the two groups and the relationship between pancreatic cancer and diabetes were compared, pancreatic cancer patients with DM were compared with patients without DM for their gender, age, location and differentiate degree of the cancer. Results The incidence of DM in the two groups were 33.1% and 9.67%, respectively, and the difference was significant (P < 0.05). In the pancreatic cancer group, the proportion of patients with DM diagnosed within 2 years or for more than 10 years were 25.91% (57/73) and 3.18% (7/73), which were significant higher than those in the control group 6.0% (18/29) and 0.67% (2/29)) (χ2=46.15, P<0.01, 0R=6.07; χ2 =4.72, P<0.01, OR=4.90). In the pancreatic cancer group, the proportion of patients with DM diagnosed within 2～5 years or 5～10 years was not significant different when compared with that of the control group, and there was no significant difference in terms of gender, age and cancer location between the pancreatic cancer patients with DM and without DM. The majority of pancreatic cancer patients with DM had corpora mammillaria or well differentiated adenocarcinoma, and the majority of pancreatic cancer patients without DM had differentiated adenocarcinoma. Conclusions DM was closely related with pancreatic cancer and DM may be one of the presentations of pancreatic cancer, as well as a possible risk factor for the tumor.

Clinical significance of acute-phase proteins in the recurrence of gastric cancer / 中国普通外科杂志

Objective To determine the value of acute phase protein in the early diagnosis of recurrence after curative gastric cancer surgery. Methods Acute phase serum protein level was measured before and after the gastric cancer surgery in 120 patients,and was compared with that of the control group. At 1, 3, 6, 9, 12 months after the operation in 87 patients undergoing curative gastric cancer surgery, the levels of acute phase proteins were measured. They were followed up for at least 12 months or until death. Results The levels of serum C reactive protein(CRP), ?1 antitrypsin (?1 AT) and ? acid glycoprotein (? AG) in gastric cancer group were significantly higher than those in the control group (P0.05). In patients who underwent curative gastric cancer surgery in a certain period after the operation, the serum levels of CRP, ?1 AT and ? AG were significantly lower than those before the surgery(P0.05).There were significant difference in CRP,?1 AT and ? AG between the recurrence groups and nonrecurrence group before and after the operation (P