Liver is the main target organ of the metastasis of colorectal cancer.More and more researches demonstrate that including micro-environment of cancer,signal transduction pathway,abnormality of chromosomes and the gene which control cell proliferation and apoptosis are the most important mechanisms in liver metastasis of colorectal cancer.The metastasis of colorectal cancer is the result of all these factors.To study the mechanism can shed some light on prevention and therapy in liver metastasis of colorectal cancer.

Objective To discuss the feasibility of moving average method (X‐B method) in the quality control of coagulation function measurement .Methods Fluctuation average value tendency of prothrombin time (PT ) ,activated partial thromboplastin time (APTT) ,thrombin time (TT) and fibrinogen (FIB) of clinical specimen ,detected by using Stago Compact analyzes ,were ana‐lyzed ,and compared cryochemic plasma method .Results Average value of PT ,APTT ,TT and FIB changed in small ranges .Tend‐ency of quality control chart of X‐B method and cryochemic plasma method were basically consistent .Conclusion X‐B method ,u‐sing plasma of patients ,could be used for the quality control of PT ,APTT ,TT and FIB examination and for the monitoring of the stability of analyzers .

Bipolar disorder (BD) is a chronic mental illness with high recurrence rate and disability. As one of the core symptoms, cognitive impairment may occurs at every stage of the disease. Evidence from the neuroimaging studies revealed that the abnormal brain volumes, the blood flow and oxygen saturation of key brain areas are related to executive impairment in patients with bipolar disorder. This article reviews current structural and functional neuroimaging studies about the executive impairment of patients with euthymic bipolar disorder and research progresses.

Objective To investigate the diagnosis and treatment of splenic space occupying lesions associated with comorbidity.Methods The clinical data of 5 patients from Jiangyin People' s Hospital and 9 patients from Wuxi People's Hospital from January 2002 to June 2012 were retrospectively analyzed.All the patients suffered from splenic space occupying lesions associated with comorbidity.Splenectomy or multi-visceral resection were selected according to the results of preoperative B sonography and computed tomography examination.Chemotherapy regimes were selected based on postoperative pathological examination.All the patients were followed up till June 2013.Results The symptoms of patients with splenic space occupying lesions were non-specific.The first symptoms of 4 patients were discomfort or distending pain of left upper abdomen,and the other 10patients had no symptoms.The coincidence rate of preoperative diagnosis was 10/14,and the coincidence rate of preoperative diagnosis for patients with malignant tumors was 2/5.Fourteen patients received preoperative B ultra-sonography,and 9 were definitively diagnosed.Nine patients received computed tomography,and 7 were definitively diagnosed.Of the 14 patients,right ovarian cancer,bilateral ovarian cancer and sigmoid colon cancer were correlated with solitary splenic metastasis,and the main lesions of the other 11 patients were not correlated with splenic space occupying lesions.The main lesions of patients with left colon carcinoma,type 2 diabetes and vascular tumor of the spleen,patients with renal carcinoma and splenic sclerosing hemangioma,and patients with hypertension,cholecystolithiasis and splenic lymphangioma were diagnosed simultaneously with the splenic space occupying lesions,and the main lesions of theother 11 patients were diagnosed separately with the splenic space occupying lesions.Ten patients underwent simple splenectomy and 4 patients received multi-visceral resection.Chemotherapy regimens were selected according to the type of main lesions for 5 patients who were diagnosed by pathological examinations.All the patients were recovered smoothly with no occurrence of severe infections.Two patients with splenic sarcoma had tumor metastasis at postoperative 6 months and 1 year,respectively.One patient with right ovarian cancer and solitary splenic metastasis had transverse colonic metastasis at postoperative 3 years.One patient with bilateral ovarian cancer and solitary splenic metastasis had peritoneal metastasis at postoperative 2 years.One patient with sigmoid colon cancer and solitary splenic metastasis died of peritoneal tumor recurrence at postoperative 4 years.One patient with left colon carcinoma,type 2diabetes and vascular tumor of the spleen survived for 6 years and was still sound and well.The other 9 patients with benign disease survived within the period of follow-up.Conclusions The definitive diagnosis for patients with splenic space occupying disease associated with comorbidity depends on the preoperative imaging examination and postoperative pathological examination.Surgical treatment is safe when operative contraindications are excluded.The prognosis of patients is determined by the progress of main lesions and the character of splenic space occupying lesions.

Objective To explore the characteristics of illness attribution of outpatients with multiple somatic symptoms in Peking Union Medical College Hospital. Methods It was a cross-sectional study conducted from March to October,2012. A total of 150 outpatients were recruited from the departments of Gastroenterology,Traditional Chinese Medicine and Psychological Medicine by convenience sampling. Somatic symptom scale of the Patient Health Questionnaire (PHQ-15) was used to screening each patient in the waiting list. With the cut-off value of 10,patients were divided into the somatic symptom positive (SOM+) group and somatic symptom negative (SOM-) group. Sociodemographic characteristics were compared between these two groups. All the subjects completed interviews including questions about illness attribution. All the answers of illness attribution were concluded into three major groups as physical factors,situational factors and psychological factors. Results The proportion of female was significantly higher in SOM+ group than in SOM-group (69.3% vs. 53.3%;χ=4.048,P=0.044). In SOM+ group,significantly more patients contributed their illness to psychological factors (64.0% vs. 45.0%;χ=5.273,P=0.022). There was no significantly difference between SOM+ group and SOM-group on the phenomenon of multiple illness attribution (41.0% vs. 32.0%;χ=1.407,P=0.236). However,in the Department of Gastroenterology,there were significantly more outpatients in SOM+ group with multiple illness attribution (60.0% vs. 32.0%;χ=3.945,P=0.047).Conclusions The outpatients in general hospital with multiple somatic symptoms are more likely to contribute their illness to psychological factors. The phenomenon of multiple illness attribution is common among patients. Clinicians should increase their awareness and knowledge of illness attribution,so as to provide better holistic health services.

Objective To observe the inhibitory effect of DPC4 gene on growth of pancreatic carcinoma in vitro. Methods The human DPC4 cDNA was subcloned to the retroviral vector pLXSN and then packaged with GP+E86 and PA317 packaging cells respectively. AntiG418 clones were acquired and named as PA317/ pLXSN DPC4+ cells. The DPC4 gene was restored to the human pancreatic cancer cell line BxPC-3 by the infection of the pLXSN/DPC4 and then had a stable expression after antiG418 selection, which was demonstrated by RT-PCR and Western blot. The inhibitory action of DPC4 gene expression on growth of these daughter cells was observed.Results DPC4/Smad4 gene integration in GP+E86、PA317/ pLXSN DPC4+ cells was detected by polymerase chain reaction. The BxPC-3 cells, which were null for DPC4, had stable expression of DPC4 after the infection of the pLXSN/DPC4. The expression of DPC4 gene was able to inhibit the growth of these cancer cells in vitro and downregulate the VEGF mRNA level.Conclusions This study suggested that there can be marked inhibition of growth and angiogenetic ability of pancreatic cancer cells after infection by retrovirus vector containing DPC4.

Objective To evaluate the strategies and effect of surgical treatment for concomitant abdominal aortic aneurysm (AAA) and colorectal cancer (CRC). Methods Literatures on concomitant AAA and CRC published from January 1988 to December 2008 were retrieved from Pubmed, Sciencedirect, Ovid, CBMdisc, CNKI and et al, and correlated indexes were extracted for analysis. Differences among the groups were analyzed using the t test, chi-square test and fisher's exact test. Results A total of 367 cases of concomitant AAA and CRC treated by operation were retrieved. The length of operation delay of patients who received radical resection of CRC first was (115 ± 21 )days, which was significantly longer than (42 ± 8 )days of patients who received open abdominal aortic aneurysm repair (OAAR) first (t = 18. 9, P <0.05). The 30-day complication rate and accumulative length of hospital stay of patients who received one-stage radical resection of CRC + OAAR were 10.5% ( 12/114 )and (23 ±6) days, and 26.0% (47/181) and ( 16 ±4)days of patients who received two-stage radical resection of CRC + OAAR, with a significant difference ( χ2 = 10.42, t = 12. 01, P <0.05 ). The accumulative length of hospital stay of patients who received radical resection of CRC + endovascular aneurysm repair (EVAR) was (12 ±4) days, which was significantly shorter than that of patients who received radical resection of CRC + OAAR [ ( 19 ±5 ) days ] ( t = 9.48, P < 0. 05 ). The 4-year survival rate of patients who received two-stage radical resection of CRC + OAAR was 43.5% (27/62), which was significantly lower than that of patients who received two-stage radical resection of CRC + EVAR [69.2% (18/26) ] or one-stage radical resection of CRC + OAAR [73.7%(14/19) ] (χ2 =4.83, 5.28, P<0.05). Conclusions If the diameter of AAA is under 5 cm, radical resection of CRC should be firstly carried out; but if the diameter of AAA is above 5 cm, OAAR should be firstly carried out to prevent the rapture of tumors. One-stage surgery is better than two-stage surgery if patients could tolerate it.

Objective To observe the effect of DPC4 gene transfection on the chemotherapy sensitivity of pancreatic carcinoma cells. Methods The human DPC4 complementary DNA was subcloned to the retroviral vector pLXSN to obtain recombinant pLXSN/DPC4 with direct inserting potential. The daughter cell BxPC-3/DPC4 which had DPC4 stable expression was acquired after the pancreatic carcinoma BxPC-3 cells had been transfected with pLXSN/DPC4. The sensitivity of the carcinoma cells for 5-Fu and gemcitabine was observed. Meanwhile, the mRNA level of Mdr-1 and Chk1was detected by semi-quantity PCR assay. Results The 50% inhibiting concentrations (IC50)of 5-Fuand gemcitabin4e for BxPC-3 (culturing for 72 h) were rather lower than those of BxPC-3/pLXSN and BxPC-3/-cells. Moreover, the semi-quantity PCR assay revealed that the mRNA level of Mdr-1 and Chk1 was down-regulated. These findings indicated that pLXSN/DPC4 vector, 5-Fu and gemcitabine could inhibit the growth of pancreatic cancer cells. The combined therapy with pLXSN/DPC4 vector and chemotherapeutic drugs could further inhibit the growth of cancer cells. Conclusion The DPC4 gene transfection could enhance the sensitivity of pancreatic cells to chemotherapy, which may be realized through the down-regulation of Mdr-1 and Chk1 gene expression.

Objective To evaluate the radical effect and prognosis of laparoscopic resection for colorectal cancer in China.Methods Articles of non.randomized comparative studies(NRCs)of laparoscopic resection and open Burgery for colorectal cancer which were published before October 2007 were retrieved,and correlated indexeswere extraeted for meta.analysis.Results The mean quality score of the 14 articles selected was 18.92±1.27.The basic characteristics of patients in laparoscopic resection group were similar to those in open surgery group.Compared with open surgery group,the incised length of the intestine in the laparoscopic resection group was shorter by 0.66 cm.and the distance between distal margin of resection and tumor was farther by 0.26 cm.The 2-year survival rate of patients in laparoscopic group Was 1.67 times higher than that of open surgery group.There was no significant difference upon follow-up rate,tumor diameter,number of resected lymph nodes,local recurrence rate and distal metastasis rate between the 2 groups.Conclusions The results of meta-analysis show that laparoscopic resection has the sanle radical effect as open surgery for colorectal cancer.but the 2-year survival rate of patients treated by laparoscopic resection is comparatively higher.

Objective To study the academic level of randomized control trials(RCTs)published from 2004 to 2009 in Chinese Journal of Hepatobiliary Surgery.Methods Published work about RCTs in 72 issues of Chinese Journal of Hepatobiliary Surgery was searched by finding relevant articles published during 2004-2009.Correlated indexes including literature received time, literature publishing time, the total number of citations, number of citations in Chinese, number of citations in English, research funding situations, the number of authors, article affiliations in all RCTs, together with single(or multiple)center study situation, positive conclusions, the starting time, the end time,and number of patients recruited in clinical RCTs were extracted for aggregate analysis.Results During the past six years, a total of 135 articles of RCT were published in Chinese Journal of Hepatobiliary Surgery, accounting for 8.7% in all clinical studies.The average number of RCTs in each issue was 1.88.The average time for publishing time delay was 450 days.The total number of citations in RCTs was 1252 and the average number of RCTs for citations was 9.3.53 RCT studies were financed, accounting for 39% of the total number of research papers.Beijing Friendship Hospital attached to the Capital University of Medical Sciences had published 8 papers of RCT and it is the institution of publishing the largest number of such papers in the journal.The number of multi-center study for RCTs was one and all RCT studies had significant conclusions.The average research duraton in RCTs was 45 months.The total number of patients in 33 clinical RCTs was 2705 and the average number of patients recruited in each RCT was 82.Conclusion Chinese Journal of Hepatobiliary Surgery put emphasis on the strongest evidence and the most valuable RCT researches that have great significance in the field of domestic hepatobiliary surgery for clinical treatment and experimental research.