Objective To compare the effect of continuous negative pressure suction and no negative pressure on functional recovery after radical gastrectomy for gastric cancer.Methods 100 patients with gastric cancer who underwent radical resection for gastric cancer from June to June 2011 were selected as the research objects,The patients were divided into observation group and control group according to the random number table method,the patients were divided into observation group and control group,50 cases.The observation group with no negative pressure continuous gastrointestinal decompression.In the control group,the negative pressure was used to attract the continuous gastrointestinal decompression,observation and comparison of the two groups of the day,2,3,1 days lead flow,Two groups were observed the recovery of gastrointestinal function (bowel sound,anal exhaust time,gastric tube indwelling time).And complications (infection,obstruction,anastomotic leakage,etc.).Results On the day,1,and 2 days after operation,the flow rate of the observation group was (41.6 ±29.67)mL,(62.1 ±39.67)mL,(96.78 ± 56.74)mL,which were significantly lower than the control group which were (55.8 ±31.23)mL,(75.3 ±42.16)mL, (96.78 ±56.74)mL,the differences were statistically significant (t =-2.63,-2.79,-2.40,all P <0.05).The observation group postoperative gastrointestinal function recovery was better than the control group,bowel sound,anal exhaust time (18.68 ±8.21 )h,(69.77 ±7.76)h,which were shorter than the control group (32.6 ±12.43)h, (90.26 ±8.86)h,And after gastric tube indwelling time and the postoperative hospitalization time was (3.43 ± 1.21)d,(12.04 ±1.53)d,shorter than those of the control group (5.56 ±1.76)d,(15.26 ±3.16)d,the difference was statistically significant (t =-2.29,-2.87,-2.60,-2.90,all P <0.05).Compared with the control group (18.0%,16.0%,14.0%),the observation group (6.0%,2.0%,2.0%)was lower in fever,sore throat and lung infection,the difference between the two groups was statistically significant (χ2 =4.82,6.99,4.23,all P <0.05). Conclusion No negative pressure drainage after radical gastrectomy for gastric cancer can promote the recovery of gastrointestinal function,shorten length of hospital stay,reduce the occurrence of postoperative complications,it is worthy of clinical popularization and application.

[Objective]To observe changes of skin reinnervation during burn wound healing and determine remodeling of nerve fibers.[Method]Wound tissue and scars were harvested.Collagen was determined with modified Masson trichrome staining and nerve fibers were labeled with neuro filament protein by immunofluorescent technique.Three dimension reconstruction of nerve fibers regenerated was observed under laser scanning confocal microscope.[Result]The CVF(collagen volume fraction) increased during the process of wound healing.The regenerated nerve fibers were sparse,short and small,which was significant lower the normal control.The skin reinnervation improved during the wound healing process and came to peak NVF(nerve fiber volume fraction) in proliferative stage.Disintegration and fragmentation were observed frequently in samples from proliferative stage,which seldom occurred during mature stage.[Conclusion]The remodeling of skin nerve fibers comprises a sequential process of increasing number,shape distortion during wound healing and then disintegration,number decrease and normal shape.

BACKGROUND: Previous studies have found that nerve growth factors play an important role in the process of wound healing, but there is less research for the low-affinity nerve growth factor receptor p75 and sortilin in fibroblasts, and no reports on whether there are differences in expression of p75 and sortilin in the scar fibroblasts and normal skin fibroblasts. OBJECTIVE: To study the expression of low-affility nerve growth factor receptor p75 and sortilin in the normal human skin fibroblasts and the human keloid fibroblasts. METHODS: The keloid fibroblasts and normal hunman skin fibroblasts were cultured in vitro, and the immortalized epithelial cells HaCaT were used as the positive control. The real-time PCR was used to detect the mRNA expression of the p75 and sortilin in the keloid fibroblasts and normal human skin fibroblasts, and western blot and immunocytochemical staining were used to detect the protein expression of p75 and sortilin. RESULTS AND CONCLUSION: The real-time PCR and western blot results showed that in the protein and mRNA levels, p75 and sortilin showed positive expression in the keloid fibroblasts and normal human skin fibroblasts, and there was no significant difference in the expression of p75 between keloid fibroblasts and normal human skin fibroblasts, and the expressions of p75 and sortilin in the keloid fibroblasts and normal human skin fibroblasts were significantly lower than those in HaCaT. There was no significant difference of p75 expression between keloid fibroblasts and normal human skin fibroblasts, and the expression of sortilin in the keloid fibroblasts was significantly lower than that in the normal human skin fibroblasts (P < 0.05). Immunocytochemical staining result showed that the expression of p75 and sortilin in the keloid fibroblasts and normal human skin fibroblasts were distributed in the membrane and cytoplasm. Precursor nerve growth factor combined with high-affinity p75 receptor could promote the apoptosis of the cells with the help of sortilin, and the expression of sortilin in the keloid fibroblasts was significantly lower than that in the normal human skin fibroblasts, which may associated with the high proliferation of the keloid fibroblasts. The results provide a new target for the prevention and treatment of pathological scars.

Objective To investigate the clinical features and therapeutic strategies of one patient with meningioangiomatosis ( MA ) complicated with intracranial aneurysm formation. Methods The clinical data of one patient with aneurysm-formed MA admitted to the Department of Neurosurgery,the First Affiliated Hospital of Sun Yat-sen University was analyzed retrospectively. The patient received emergency craniotomy and middle cerebral artery aneurysm clipping and evacuation of intracranial hematoma. The meningeal tissue around the aneurysm was taken for pathological examination. Results Microscopy revealed meningeal thickening in the patient with MA accompanied with intracranial aneurysm. Spindle cells around the meninges and perivascular tissue of cortical hyperplasia formed an annular and fence-like structure. The results of immunohistochemistry showed the hyperplastic vessels and perivascular fibroblast like spindle cells diffuse vimentin-positive;the hyperplastic vascular endothelial cells CD99,CD34 were positive;and the residual glial cells in the lesions showed glial fibrillary acidic protein positive. Conclusion MA complicated with intracranial aneurysm is rare. The vascular condition is poor. The shape of aneurysm is irregular,and the risk of bleeding is high. Excise the involved meningeal tissue and clip the aneurysm with microsurgical operation is the resonable treatment.

For the reform and development of clinical laboratory education, based on the previous course reform, Laboratory Medicine College of Chongqing Medical University has put the leading teachers'responsibility system of laboratory medicine course into practice. In the recent 3 years, the course is better organized.The students are more interested in the course and they communicate more with teachers than ever before. The effect of the course is obvious. The leading teachers' responsibility system in laboratory medicine course should be promoted.

Objective To establish the analytical method for fingerprint of Aristolochia manshuriensis by HPLC-DAD-ESI/MS,which can be used as the basis for quality control of the drug and for the further studies on kidney toxicity metabolite.Methods Samples A.manshuriensis from different habitats were extracted by 75% methanol and analyzed by HPLC-DAD-ESI/MS,whose chromatographic fingerprints were established.Two ways to calculate the similarity were selected to compare the results by determining the common peaks.Results There were 30 main characteristic components in A.manshuriensis.The HPLC-DAD-ESI/MS fingerprint of the 30 common peaks was established preliminarily.The samples of A.manshuriensis from different habitats was found having a good similarity,and the range of similarities for 24 balches of A.manshuriensis were 0.871—0.998.Conclusion The method is reliable,accurate,and of good stability,and can be used for the quality control and variety identification of A.manshuriensis.

It is for estimating the laboratory statistics from the view of clinical medicine objectively,completely and appropriately that we establish ＜ Laboratory Sciences and Clinical Medicine ＞ which fits the requirement for the modern medical laboratory specialists. In this selective course, we use problem-based learning ( PBL ) teaching method which is different from the traditional one, stimulating students to participate in the study actively and passionately,training them to think in a scientific way and to analyse and solve the problem in a rational way. As a result, it works well which makes us believe it is worth popularizing.

Preliminary research and partial satellite carrying experiment were firstly carried out,so as to research the technique of environmental control and life support system(ECLSS)of Chinese manned spacecraft.Environmental control and life support sub-system of "Shenzhou" spacecraft were developed subsequently,and the technique of physical/chemical regenerative ECLSS and controlled ecological life support system(CELSS)were also researched gradually.This paper introduced the research and development of ECLSS of Chinese manned spacecraft,and discussed the technical character of ECLSS.

Guided by the demands of society,we propose a new professional training objectives of medical laboratory technology,which is to cultivate comprehensive talents covering the entire industrial chain of medical laboratory technology with profound foundation,broad caliber,high quality and outstanding ability.According to the training objective,we build up 4321 talents training system and try to carry out preliminary practice and exploration on talent cultivation model from the following aspects,such as the construction of curriculum system,the reform of the teaching contents and methods,training of students' professional skills and entrepreneurial innovation spirit.

Objective To investigate the clinical features and treatment strategy of brain arteriovenous malforma-tions(AVM) associated with arterial aneurysms. Methods The clinical manifestation, imaging data, treatment and out-come of the patients with AVM were retrospectively analyzed in 38(10.4%) of these 364 patients. Results Hemorrhage was the most common clinical manifestation (60.5%). The hemorrhage risk was higher in AVM associated with arterial an-eurysms than in single AVM(χ2=5.956,P<0.05). The most common type of associated aneurysms was feeding artery an-eurysm (69.4%). Hemorrhage more frequently occurred within the aneurysm.(χ2=8.869,P<0.05). The bleeding lesions and 43 associated aneurysms of the 37 patients were treated effectively by endovascular treatment and/or craniotomy. Thirty-four patients had excellent or good outcomes, six patients had complications, 3 patients had neurological deficits. Postoperative digital subtraction angiography (DSA) examination showed the complete disappearance of arteriovenous malformation and aneurysm in sixteen cases. Conclusions The AVM associated with aneurysms is common in patients with AVM. AVM associated with aneurysms has a higher risk of hemorrhage than single AVM. The aneurysm within AVM has a higher rate of hemorrhage. The treatment priority should be given to the bleeding lesions and aneurysms.