Objective To investigate the effect of radiation on the mitochondrion in adenocarcinoma A549 cells.Methods After A549 cells were irradiated with 0,0.5,3 or 8 Gy of 60Co γrays,mitochondrion membrane potential of A549 cells was detected by JC-1 probe,and ATP activity was measured by ATP kit in a chemiluminescence apparatus.The mitochondria DNA copy numbers was detected by real-time PCR assay.Results At 24 h after radiation,the mitochondrion membrane potential of A549 cells in all the irradiated groups changed significantly (F =243.44,P ＜ 0.05),among which 0.5 or 3 Gy of radiation resulted in a significant increase of mitochondrion membrane potential of A549 cells (t =-10.12,-5.59,P ＜ 0.05).However,the mitochondrion membrane potential of A549 cells exposed to 8 Gy of radiation decreased significantly 24 h after radiation (t =15.22,P ＜ 0.05).The mitochondrion membrane potential of A549 cells in all radiation groups returned to the normal level 48 h after radiation (F =10.36,P ＜ 0.05).24 h after radiation,the level of ATP in A549 cells significantly changed respectively(F =97.08,P ＜ 0.05),similar to the mitochondrion membrane potential.The ATP level in 0.5 and 3 Gy groups increased significantly (t =1.66,7.27,P ＜ 0.05),and the level of ATP in 8 Gy group decreased significantly (t =-8.24,P ＜ 0.05).Furthermore,48 h after both 0.5 and 3 Gy of radiation,the ATP content in A549 cells was still higher than that in untreated A549 cells (t =4.60,8.53,P ＜0.05).The mitochondria DNA copy numbers in A549 cells increased significantly in all the radiation groups (F =118.00,P ＜ 0.05).Compared with untreated A549 cells the mitochondria DNA copy numbers in A549 cells increased at 0.5 Gy by 12 times(t =0.02,P ＜0.05),and increased at 3 and 8 Gy by 7 and 10 times,respectively (t =9.68,15.10,P ＜ 0.05).Conclusions High dose of radiation resulted in the decrease of mitochondrion membrane potential of A549 cells,which subsequently affected the production of ATP.However,radiation with moderate and lower dose could lead to the compensatory increase of mitochondrion membrane potential of A549 cells,which promoted the production of ATP.The mitochondria DNA copy numbers compensatory would increase after A549 cells were exposed to radiation within 8 Gy.

Objective To investigate the clinical features of early postoperative inflammtory small bowel obstruction,and discuss its diagnosis,treatment and preventive measures.Methods The clinical data of 68 cases of early postoperative inflammatory small bowel obstruction were analyzed retrospectively.Results Within the 68 cases,65 cases were cured by non-operative treatment including gastrointestinal decompression,anti-inflammatory drugs,somatostatin,total parenteral nutrition(TPN) and traditional Chinese medicine.The mean time from the onset of symptoms to the recovery of bowel function was 14 days.Three cases were cured by transferring to operation.One case of them was transferred to operation for strangulated intestinal obstruction during the period of conservative treatment.One case underwent oper.ion because the patient didn t recover after 4 weeks expectant treatment.One case underwent operation for the impatience with the conservative treatment of both the doctors and the patient.Conclusion Non-operative therapy should be the first choice for the treatment of early postoperative inflammatory small bowel obstruction,and its therapeutical effect was well-accepted.

Earthquake is one of the sudden major natural disasters,with a serious threat to human life and property safety,and also an enormous challenge to public health security.During earthquake the collapse of the houses and falling of heavy objects often resulted in a large number of patients with spinal fractures,which would create different levels of spinal cord injury(SCI),contributing to permanent disability.Those are closely related to the first aid of spinal fractures,clinical treatment and comprehensive rehabilitation post-earthquake.However,after earthquake,how to reduce the degree of disabilities of SCI patients and to improve their quality of life is not only a medical problem,but also a social problem.

Central pain (CP) following spinal cord injury (SCI) challenges the health care community. A number of pain syndromes associated with SCI are based on the nature of the lesion, neurological structure damage and secondary pathophysiological changes. The hyperresponsiveness of neurons following SCI is the key factor of the mechanisms of CP. And several treatments have received some effects. So it is very important to study the mechanisms and therapies of CP.

Objective To investigate the quality control of the next-generation sequencing data by analyzing some im-portant problems with quality control in order to provide high-quality data for the downstream data analysis .Method The software Fastq_clean was developed to clean the data and to statistically analyze the quality of the data.Result Using a Chrysanthemum transcriptome dataset , the function of the Fastq_clean software was illustrated .Conclusion Based on the Bioconducter package , the Fastq_clean software can accurately remove low quality nucleotides and Ns , adapter contamina-tion, possible rRNA and virus contamination .Moreover, it can keep the largest possible amount of high-quality data reads.

Objective To examine the efficacy and adverse reactions of bortezomib-based chemotherapy in treatment of multiple myeloma (MM).Methods Twenty-eight patients with multiple myeloma received a joint chemotherapy containing bortezomib.The efficacy was determined according to EBMT criteria.Results 28 patients received the chemotherapy,20 patients were newly diagnosed and 8 patients were relapsed or refractory.25 patients can be evaluateed efficacy.The total response rate was 100 ％ (25/25),consisting of 5 patients with complete response (CR),10 patients with almost complete remission (nCR),10 patients with partial remission (PR).The main side effects include peripheral neuropathy,thrombocytopenia,gastrointestinal disorders and viral infections.These side effects were improved by symptomatic treatment and generally did not affect the treatment.Conclusion For the newly diagnosed and relapsed or refractory multiple myeloma cases,bortezomib-based chemotherapy is a safe and effective therapeutic drug with rapid onset,high treatment response rate,and adverse reaction can be tolerated.

Objective To summarize the clinical experience of laparoscopic cholecystectomy(LC) for acute cholecystitis.Methods Clinical records of 58 cases of acute cholecystitis treated by LC from March 1998 to May 2004 were respectively reviewed.Results Intraoperative cholangiography was conducted in 6 cases,5 of which were found to have common bile duct stones.Of the 5 cases,2 underwent LC combined with choledoscopic choledochotomy, stone removal and T tube drainage; the other 3 cases had ill defined relationship of Calot′s triangle and underwent conversion to open choledochotomy with stone removal and T tube drainage.In 52 cases were diagnosed as simple gallbladder stones, LC was successfully accomplished in 50 cases and conversion to open surgery was required in 2 cases because of serious inflammatory adhesions.In this study 1 case had jaundice after operation and 3 cases had leakage of bile,and all recovered on conservative treatment . Conclusions LC can be performed safely in the majority of cases of acute cholecystitis.

Morphine has been reported to suppress human immune response. We aimed to observe the effects of morphine, fentanyl and tramadol on NF-kappa B and IL-2 from both laboratory and clinical perspective. Jurkat cells were incubated with ten times clinically relevant concentrations of morphine, fentanyl and tramadol before being stimulated with PMA. NF-kappa B binding activity and IL-2 levels were measured. In the clinical study, 150 consenting patients were randomized into 3 groups according to the analgesics used in them, namely, group morphine (M), group fentanyl (F) and group tramadol (T). IL-2 was measured preoperatively and 1, 3 and 24 h after operation. Consequently, NF-kappa B activation was suppressed by morphine and fentanyl but not by tramadol. IL-2 was significantly decreased by morphine and fentanyl but not by tramadol in vitro. In the PCA patients, IL-2 was decreased in group M and increased in group F postoperatively. Whereas in group T, IL-2 was unchanged 1 h after operation but was significantly elevated 3 and 24 h after operation. Our results showed that the inhibition of morphine on IL-2 was most probably related to its suppression on NF-kappa B. Fentanyl had different effects on human immune response in vitro and in vivo. Tramadol may have immune enhancing effect.

Objective: To investigate the clinical and pathological factors related to metachronous liver metastases in patients with Dukes'C colorectal cancer.Methods: A total of 170 patients with Dukes'C colorectal cancer treated with radical surgery in our hospital between January 2003 and December 2006 were reviewed.Factors including sex, age, tumor size (cm), depth of invasion, histological type, and serum CEA level were analyzed.Univariate and multivariate analyses were used to evaluate the factors concerned by Binary logistic regression (SPSS 13.0 for windows).Results: Of the 170 cases, 36 cases had metachronous liver metastases and 26 of them (72.2%) were found with metachronous liver metastases with-in two years after surgery.Thirty-two cases (88.9%) were identified with metachronous liver metastases within three years after surgery.Univariate analysis showed that depth of invasion, histological type and serum CEA level were predictors that could affect metachronous liver metastases.Depth of invasion and serum CEA level were independent risk factors for meta-chronous liver metastases of colorectal cancer.Multivariate analysis revealed that histological type was independent favor-able factor for metachronous liver metastases of colorectal cancer.Conclusion: Depth of invasion, histological type and se-rum CEA level were independent factors related to metachronous liver metastases of colorectal cancer.It is necessary to closely follow up Dukes'C colorectal cancer patients for two or three years after surgery in order to detect metachronous liv-er metastases early, especially for patients with higher preoperative serum CEA level or with tumor invasion to serosa.

Objective To study the difference of proteomic spectra in serum of patients with colorectal cancer(CRC) in order to build a proteomic pattern and find a method for early diagnosis of CRC.Methods We screened for potential tumor biomarkers of serum samples from 48 CRC patients and 34 healthy subjects by using CM10(Ciphergen Company,USA) and the technology of Surface enhanced laser desorption/ionization time-of-flight mass spectrometry(SELDI-TOF-MS).Using Ciphergen Protein Chipsoftware 5.1,a proteomic pattern was constructed.The constructed pattern was then tested by an independent set of masked serum samples from 33 colorectal cancer patients and 34 healthy subjects.Results(1) The contents of 27 proteins in the CRC to healthy subjects groups were significantly different(P