Objective:To investigate the effect of continuous intracranial pressure (ICP) and brain oxygen partial pressure (PbtO 2) monitoring and guiding treatment after the application of standard large bone flap decompression and microhematoma removal in patients with severe traumatic brain injury (TBI). Methods:A retrospective analysis was done of 41 patients with TBI in Department of Neurosurgery in the Inner Mongolia People's Hospital from January 2018 to May 2020. Patients with Glasgow coma scale (GCS)<8 points were treatesd with microscopical removal of hematoma and contusion brain tissue and standard large bone flap decompression. Intraoperative intracranial pressure and brain tissue oxygen partial pressure monitoring probes were placed. Postoperatively, continuous intracranial pressure monitoring and partial oxygen pressure monitoring of brain tissue were performed, and target-based treatment under ICP and PbtO 2 monitoring was performed. According to the Glasgow Outcome (GOS) score after six months, patients were divided into a good outcome group (4-5 scores) and a poor outcome group (1-3 scores). There were 26 cases in good prognosis group and 15 cases in poor prognosis group. Linear regression analysis was used to further evaluate the relationship between PbtO 2, ICP and GOS score. The measurement data of normal distribution were compared by independent sample t-test. The counting data were expressed in cases (%), and the comparison between groups was adopted χ 2 inspection. The general linear bivariate Pearson correlation test was used. Results:The mean value of PbtO 2 (17.42±5.34) mmHg in the poor prognosis group was lower than that in the good prognosis group (24.65±5.61) mmHg, with statistical significance ( t=4.04, P<0.001). The mean value of ICP (22.32±3.45) mmHg in the poor prognosis group was higher than that (17.32±3.23) mmHg in the good prognosis group, with statistical significance ( t=4.15, P<0.001). Using PbtO 2 and ICP as independent variables and GOS score after 6 months as dependent variable, a regression equation was established ( Y=4.040 X+7.497; Y=-2.549 X+28.63). The mean value of PbtO 2 was positively correlated with GOS scores after 6 months in patients with severe head injury ( r=0.75, P<0.001). The mean value of ICP was negatively correlated with the prognosis of patients with severe head injury ( r=-0.87, P<0.001). Conclusion:The treatment guided by ICP combined with PbtO 2 monitoring is valuable in improving the prognosis of patients with severe traumatic brain injury after standard decompressive craniectomy, and may improve the prognosis 6 months after the injury.

Objective:To investigate the effects of continuous monitoring intracranial pressure (ICP) and brain oxygen partial pressure (PbtO 2) on the prognosis of patients with severe craniocerebral injury. Methods:A prospective randomized controlled trial was conducted. Seventy patients with severe craniocerebral injury with a Glasgow coma score (GCS) 4-8 admitted to the neurosurgical intensive care unit (NICU) of the People's Hospital of Inner Mongolia Autonomous Region from January 2017 to May 2020 were enrolled, and they were divided into ICP monitoring group and ICP+PbtO 2 monitoring group by random number table. Patients in ICP monitoring group received ICP monitoring and were given traditional treatment of controlling ICP and cerebral perfusion pressure (CPP), the therapeutic target was ICP < 20 mmHg (1 mmHg = 0.133 kPa) and CPP > 60 mmHg. Patients in ICP+PbtO 2 monitoring group were given ICP and PbtO 2 monitoring at the same time, and oxygen flow was adjusted on the basis of controlling ICP and CPP to maintain the PbtO 2 > 20 mmHg, and the therapeutic target of ICP and CPP was the same as the ICP monitoring group. ICP and PbtO 2 values were recorded during monitoring in the two groups, the results of CPP, GCS and arterial blood gas analysis were recorded, and the prognosis at 3 months and 6 months after injury was compared by Glasgow outcome scale (GOS) score between the two groups. GOS score > 3 was considered as good prognosis. Kaplan-Meier survival curve was drawn, and the 3-month and 6-month cumulative survival rates of the two groups were analyzed. Linear regression analysis was used to further evaluate the relationship between PbtO 2 and GOS score. Results:Finally, a total of 70 patients with severe craniocerebral injury were enrolled in the analysis, 34 patients received ICP combined with PbtO 2 monitoring and guided therapy, and 36 patients received ICP monitoring alone. The average ICP of ICP+PbtO 2 monitoring group was significantly lower than that of ICP monitoring group (mmHg: 13.4±3.2 vs. 18.2±8.3, P < 0.01). Although the CPP in both groups was great than 60 mmHg, the average CPP of ICP+PbtO 2 monitoring group was significantly higher than that of ICP monitoring group (mmHg: 82.1±10.5 vs. 74.5±11.6, P < 0.01). No significant difference was found in average GCS score or arterial partial pressure of carbon dioxide (PaCO 2) between the ICP+PbtO 2 monitoring group and ICP monitoring group [GCS score: 5.3±2.3 vs. 5.2±2.2, PaCO 2 (mmHg): 33.5±4.8 vs. 32.6±5.2, both P > 0.05]. The average arterial partial pressure of oxygen (PaO 2) of ICP+PbtO 2 monitoring group was obviously higher than that of ICP monitoring group (mmHg: 228.4±93.6 vs. 167.3±81.2, P < 0.01). Compared with the ICP monitoring group, the good outcome rates of 3 months and 6 months after injury in the ICP+PbtO 2 monitoring group were significantly higher (3 months: 67.6% vs. 38.9%, 6 months: 70.6% vs. 41.7%, both P < 0.05). Kaplan-Meier survival curve showed that the 3-month and 6-month cumulative survival rates of ICP+PbtO 2 monitoring group were significantly higher than those of ICP monitoring group (3 months: 85.3% vs. 61.1%, Log-Rank test: χ2 = 5.171, P = 0.023; 6 months: 79.4% vs. 55.6%, Log-Rank test: χ2 = 4.511, P = 0.034). Linear regression analysis showed that PbtO 2 was significantly correlated with GOS score at 3 months and 6 months after injury in patients with severe craniocerebral injury ( r values were 0.951 and 0.933, both P < 0.01). Conclusions:PbtO 2 compared with ICP monitoring guiding therapy is valuable in improving the prognosis of patients with severe craniocerebral injury. It can improve the prognosis at 3-6 months after injury.

Objective To summarize the clinical characteristics and investigate the prognostic factors of primary duodenal carcinoma.Methods The clinical data of 122 patients with primary duodenal carcinoma who were admitted to the Shengjing Hospital Affiliated to China Medical University from November 2007 to May 2013 were retrospectively analyzed.All the patients received different operations according to the characteristics of tumors.Primary duodenal carcinomas of patients were confirmed by the postoperative pathological diagnosis.All the patients were followed up by outpatient examination, telephone interview and correspondence till November 30,2014.The treatment process, results of imaging examination and laboratory examination and postoperative survival were recorded.The clinical features, diagnostic criteria, therapeutic regimens and prognostic factors were analyzed.The survival rate and survival curve were analyzed and drawn by the Kaplan-Meier method.The univariate analysis was done using the Log-rank test, and multivariate analysis was done using the COX regression model.Results Among the 122 patients with primary duodenal carcinoma, jaundice as the first symptom was detected in 57 patients, abdominal pain and upper abdomen discomfort in 37 patients, gastrointestinal obstruction in 14 patients,anorexia and reduction of body weight in 4 patients, gastrointestinal hemorrhage in 3 patients, diarrhea in 3 patients, pyrexia in 3 patients and abdominal mass in 1 patient.The positive rates of CT examinations, endoscopic examinations, magnetic resonanced cholangio-pancreatography (MRCP), B-ultrasound examinations and upper gastrointestinal contrast examinations were 69.67％ (85/122), 85.56％ (77/90), 79.76％ (67/84), 12.73％ (7/55) and 75.00％ (36/48), respectively.Among the 122 patients, anemia was detected in 48 patients,positive fecal occult blood test in 94 patients, increasing level of CA19-9 in 71 patients, increasing level of CEA in 22 patients and increasing level of AFP in 9 patients.The tumors located at the descending part of duodenum,duodenal bulb and horizontal part of duodenum were detected in patients of 86.07％ (105/122), 7.37 ％ (9/122) and 6.56％ (8/122), respectively.The mean diameter of tumors was 2.3 cm (range, 1.0-15.0cm).All the 122 patients received operation.Pancreaticoduo-denectomy was performed in 100 patients, including combined with jejunostomy in 17 patients, pylorus-preserving pancreatoduodenectomy in 7 patients, segmental resection of duodenum and gastrojejunostomy in 5 patients, local resection of duodenal papilla in 6 patients and palliative gastrojejunostomy in 11 patients.Nineteen patients with complications were cured by symptomatic treatment.Of the 122 patients, adenocarcinoma, carcinoid tumor, lymphoma, small cell carcinoma, intraepithelial neoplasm combined with differentiated rhabdomyoma and with undifferentiated rhabdomyoma were detected in 116, 2, 1, 1,1 and 1 patients, respectively.The Ⅰ , Ⅱ , Ⅲ and Ⅳ stage of tumors were detected in 10, 4, 74 and 34 patients.There were 100 patients without lymph node metastasis, 13 patients with 0 ＜ metastatic lymph node ratio (MLR) ≤0.2, 4 patients with 0.2 ＜ MLR≤0.4 and 5 patients with MLR ＞ 0.4.One-hundred and twelve of 122 patients were followed up for 1-70 months with a median follow-up time of 20 months.The postoperative survival time, a median of survival time, postoperative 3-and 5-year survival rates were 1-70 months, 18 months, 36.6％ and 13.5％ , respectively.The results of univariate analysis showed that the lymph node metastasis, differentiated grade of tumor, MLR and with invasion of pancreas were risk factors affecting the prognosis of patients (x2 =8.465, 57.355, 16.232, 20.112, P ＜ 0.05).The multivariate analysis showed that the low-differentiation of tumor, invasion of pancreas, lymph node metastasis and MLR ＞ 0.4 were independent risk factors affecting the prognosis of patients (RR =3.330, 3.718, 2.623, 95％ confidence interval: 1.861-5.956, 1.292-10.696,1.624-4.236, P ＜ 0.05).Conclusions Most of the primary duodenal carcinomas are located at the descending part of duodenum without specific clinical symptoms in the early stage.The joint usage of assistant examinations can improve the diagnostic rate of primary duodenal carcinoma, and surgery is mainly therapeutic method.The low-differentiation of tumor, MLR ＞ 0.4 and invasion of pancreas are independent risk factors affecting the prognosis of patients.

Objective To investigate the 5-year efficacy of laparoscopic sleeve gastrectomy for the treatment of morbid obesity.Methods The clinical data of 31 patients with severe morbid obesity and related complications who were admitted to the Shengjing Hospital of Chinese Medical University from January 2006 to December 2007 were retrospectively analyzed.The 31 patients received laparoscopic sleeve gastrectomy and were followed up for 5 years to observe the perioperative condition,incidence of long-term complications,application of hypoglycemic drug and insulin before and after operation,the body mass index (BMI) was detected 6 months,1,2,3,4,5 years after operation,and the decrease of excess weight loss (EWL) was analyzed.The remission rate of complications,incidence of complications and the patient satisfaction score were recorded.The count data were analyzed using the chi-square test or Fisher exact probability.Repeated measurement data were analyzed using the repeated measure ANOVA,a Greenhouse-Geisser adjustment was used to correct serial dependency.Results Twenty-five patients were followed up for 5 years postoperatively.Of the 25 patients,4 (16.0％) had gastroesophageal reflux disease,and were cured by medical treatment; 1 patient (4％) had anastomotic stenosis; the percentage of EWL of 2 patients (8.0％) was under 60％ ; 4 patients (16.0％) had occasional obdominal pain.The percentage of patients with diabetes mellitus was decreased from preoperative 9.7％ (3/31) to postoperative 4.0％ (1/25),with a significant difference (P ＜ 0.05).The percentage of patients with fatty liver was decreased from preoperative 93.5％ (29/31) to postoperative 32.0％(8/25),with significant difference (x2=19.10,P ＜ 0.05).The percentage of patients with hyperlipidemia was decreased from preoperative 77.4％ (24/31) to postoperative 12.0％ (3/25),with significant difference (x2 =35.51,P ＜ 0.05).The level of BMI was decreased from preoperative (38.8 ±4.2) kg/m2 to postoperative (28.5 ± 3.1) kg/m2,with significant difference (F =113.36,P ＜ 0.05).The percentage of EWL was increased from preoperative 42％ ± 11％ to postoperative 69％ ± 16％,with significant difference (F =41.71,P ＜0.05).There was no significant difference in the patient satisfaction score between each year within the 5 years (F =0.92,P ＞ 0.05).Conclusions Laparoscopic sleeve gastrectomy is effective in losing weight with few long-term complications.

Objective To examine whether ghrelin has beneficial effect on survival of pancreatic INS-1 beta cell.Methods Rat INS-1 cells were cultured separately in 5.6 mmol/L glucose (NG group),33.3 mmol/L glucose (HG group),33.3 mmol/L glucose plus 10 nmol/L acylated ghrelin (HG+AG group),and 33.3 mmol/L glucose plus 10 μmol/L unacylated ghrelin(HG+UG group).After being incubated for different hours,cell suvival rate was determined by MTT.Activity of caspase-3 was estimated by spectrophotometry,activity of GRP78,and cytochrome c was analyzed by confocal microscopy.Results Both acylated ghrelin and unacylated ghrelin inhibited the rise in activity of GRP78,caspase-3,and cytochrome c induced by sustained high glucose.Conclusions These findings indicate that ghrelin is able to inhibit endoplasmic reticulum stress and mitochondrial dysfunction of INS-1 β-cell caused by persistent high glucose,and the effect of ghrelin is not affected by acylation.

Objective To investigate the effects of three laparoscopic bariatric operations on relieving type 2 diabetes in morbid obese patients. Methods From 2005 to 2009, 15 morbid obese patients with type 2 diabetes received bariatric operations in Shengjing Hospital including lapband operation (7 cases) , sleeve gastrectomy (7 cases) and gastric bypass(4 cases). All patients were followed up for more than 1 year. Results All patients recovered without major complications. Body weight decreased and BMI was respectively (27. 6 ± 2. 0) kg/m2, ( 26. 9 ± 1. 4) kg/m2 and (27. 5 ± 3. 0) kg/m21 year after operation. The excess BMI loss in three groups were (76. 4% ± 6. 8% ) , (83. 7% ± 4. 6% ), (85. 7% ±9. 5% ) 1 year after operation. On the other side, the fasting glucose levels and glycohemoglobin in gastric bypass group were much lower than that in other two groups. Conclusion All these operations were effective in controling the weights and fasting glucose levels, while the gastric bypass method is better than other two methods in weight and serum glucose control. Sleeve gastrectomy was better in weight and glucose control than lap band operation.

Fibro-optic bronchoscopy (FB) examinations were undertaken in 42 cases with lung cancer and 25 cases with benign lung disease; methylation-specific PCR was performed in plasma, sputum and bronchoalveolar lavage fluid (BALF) specimen for detection of p16 gene promoter methylation in all patients.Of the 42 cases of lung cancer, the positive rates of p16 gene promoter methylation were 59.5% in BALF, 52.4% in plasma and 47.6% in sputum, respectively; while p16 gene promoter methylation was detected only in one plasma sample from 25 cases with benign lung disease ( P ＜ 0.05 ).The sensitivity,specificity and overall accuracy of FB were 59.5%, 100.0% and 74.6%, respectively.The sensitivity,specificity and overall accuracy of FB combined with aberrant p16 gene methylation in diagnosis of lung cancer were 92.9%, 96.2% and 94.0%, respectively.The FB examinations combined with detection of aberrant p16 gene methylation can further improve the accuracy to diagnosis of lung cancer.

The detection method of gene chip based on SPR principle is a potential high-throughput microanalysis method without labelling. With the use of Self-assembled monolayer (SAM) technology, the gene chip of Neisseria gonorrhoeae probe lattice has been prepared, detected and analyzed using the Surface plasmon resonance (SPR) and SPR imaging (SPRI) gene chip detection system here-in provided for research in the hybridizatin reaction on the probe lattice of gene chip. The result indicates that there is an obvious resonance assimilate peak on the SPR resonance curve. And after hybridization, the refractive index and resonance as well as molecular weight of the probe have increased. So whether a hybridization takes place or whether the wanted ingredient is in the sample under examination can be determined by using SPR to watch the detecting interface or the resonance curve. The SPRI detection system is available for observing the happening of a hybridization on the probe of gene chip in real-time and straighforwardly. The SPR and SPRI system can do analysis qualitatively and quantitatively.
DNA Probes ; genetics ; Neisseria gonorrhoeae ; genetics ; Oligonucleotide Array Sequence Analysis ; instrumentation ; methods ; Surface Plasmon Resonance ; methods ; Surface Properties