Adult ; Antiretroviral Therapy, Highly Active ; Female ; HIV Infections ; drug therapy ; Humans ; Lamivudine ; administration & dosage ; Male ; Middle Aged ; Treatment Outcome ; Zidovudine ; administration & dosage

Adult ; Antigens, CD20 ; metabolism ; Diagnosis, Differential ; Female ; Humans ; Ki-1 Antigen ; metabolism ; Leukocyte Common Antigens ; metabolism ; Lymph Nodes ; metabolism ; pathology ; Lymphoma, B-Cell ; pathology ; Pseudolymphoma ; metabolism ; pathology

Cancer cell exfoliation,invasion and entry into circulation system is the early event with metastasis,which provide the possibility to formation of clinical metastase.Further research about the circulating cancer cells can help us to understand the mechanism of metastasis and offer the scientific proof against anti-metastasis.The detection of circulating tumor cells and clinical significance were reviewed.

Objective To analyze the relationship between cervical lordosis and the development of dysphagia after anterior cervical spine surgery.Methods From June 2007 to May 2010,data of 172 successive patients who had undergone ACDF operation in our hospital were reviewed in this study.The presence and duration of postoperative dysphagia were recorded via face-to-face questioning or telephone interview at least one year after the procedure.Plain cervical radiographs before and after surgery were collected.The C2-7 angle was measured.The change of C2-7 angle was defined as dC2-7 angle=postoperative C2-7-preoperative C2-7 angle.The correlation between postoperative dysphagia and dC2-7 angle was studied.Results There were 22 patients in dysphagia group,including 17 males and 5 females.Their age ranged from 25 to 70 years old,and average was 47.7±5.4.The average of BMI was 25.0±2.9 kg/m2.150 patients were in non-dysphagia group,including 101 males and 49 females.Their age ranged from 18 to 72 years old,and average age was 49.2±4.8.The average of BMI was 24.4±3.4 kg/m2.There was no statistical difference in gender,age,and BMI between two groups.The dC2-7 angle of dysphagia group ranged from-1 °-20.5°,and average was 8.6°±4.0°.The dC2-7 angle of non-dysphagia group ranged from-13°-28.5°,and average was 5.0°±4.3°.There was significant difference in dC2 7 angle between dysphagia and non-dysphagia group.Spearman Analysis revealed that there was strong correlativity between dC2-7 angle and postoperative dysphagia.When dC2-7 angle was greater than 5°,the chance of developing postoperative dysphagia significantly increased (19.3％ [17/88] vs 6.0％ [5/84]).What's more,Spearman Analysis also revealed that there was no correlativity between dC2 7 angle and degree of operative dysphagia.There was no significant difference in gender,age,and BMI between dysphagia and non-dysphagia group.There was no statistical difference in operative time,blood loss revision surgery,revision surgery ratio,most cephalic operative level and number of operative levels between dysphagia with non-dysphagia group.Logistic regression model showed that an increased likelihood of postoperative dysphagia persists with increasing dC2-7 angle,but had no relationship with operative time,blood loss,revision surgery,most cephalic operative level and number of operative levels.Conclusion dC2-7 angle may play an important role in the development of postoperative dysphagia.We found no statistical difference in operative time,blood loss revision surgery,revision surgery ratio,most cephalic operative level and number of operative levels between dysphagia and non-dysphagia group.Intraoperative measurement of the dC2-7 angle is practical and essential for reducing the postoperative dysphagia.

Brain Injuries ; etiology ; Child ; Heart Defects, Congenital ; complications ; Humans

Child ; Histiocytosis, Sinus ; diagnosis ; drug therapy ; Humans ; Lymphatic Diseases ; diagnosis ; drug therapy ; Male

Objective To investigate the relationship between source memory and item memory in children,adult and the elderly Chinese,to test the hypothesis that neuronal substrate of source memory includes frontal lobe,and that source memory and item memory were dissociated in child and the elderly.Methods A neuropsyehological battery was established to measure the performance of item memory and source memory.Child,adult and the health elderly Chinese(40 cases in each group, respectively)were enrolled.The performance of child and the elderly Chinese were compared with that of the adults,and were also analyzed among the groups to check the dissociation between the performance of item and source memory.Results Compared with the adults,the source memory in children(I value:0.87?0.08 vs.0.73?0.13,P＜0.01)were impaired,but not found in item memory(Pr value:0.73?0.14 vs.0.74?0.11,P＞0.05).The elderly Chinese was impaired in both item(Pr value:0.66?0.15,P＜0.05)in source memory(I value:0.68?0.13,P＜0.01).Double dissociation between item and source memory was found in the child and the elderly.Conclusions The evidence of double dissociation between item and source memory within child and the elderly supports the dual-process model of source and item memory.These findings also support that frontal lobe involves in source memory,the indicators of source memory damage is early behavior marker for mild cognitive impairment or early Alzheimer disease.

Objective To evaluate the effect of early enteral nutrition (EN) on the pancreatic exocrine secretion in dogs with acute necrotizing panereatitis (ANP). Methods ANP model was induced by injection of mixtured solution of 5% sodium tanrecholate and trypsin into the pancreatic duct. Thirty dogs were randomly divided into total parenteral nutrition (TPN) group (n=5), duodenal PEPTI-2000VARIENT (DP) group (n=5), duodenal Nutrison MuhiFibre (DN) group (n=5), jejunal PEPTI-2000VARIENT (JP) group (n=5), jejunal Nutrison MuhiFibre (JN) group (n=5). The dogs were treated by either TPN or EN 24 hours after ANP model induction and the nutrition support lasted for 5 days. Serum amylase, LDH, lipase, secretin (SEC), cholecystokinin (CCK) and gastrin were measured at 1, 2, 3, 4, 5 d. Pancreatic juice was collected for 3 hours after TPN or EN started, and the amount of pancreatic juice and levels of proteinase, amylase, lipase, HCO3-, K+, Cl-, Na+ were determined. Dogs in each group were sacrificed at day 7. Histological and ultra-structure changes of the pancreatic tissues were evaluated pathologically. Results The levels of serum amylase, LDH, lipase, CCK, amount of pancreatic secretion and K+, Cl+, Na+ were not significantly different among these groups. The levels of plasma SEC and gastrin, HCO3-, proteinase, amylase, lipase in the duodenal nutrition groups were significantly higher than those in TPN group (P<0.05). The above mentioned parameters in the jejunal nutrition group were significantly lower than those in the duodenal group (P<0.05) and higher than those in the TPN group without significant difference. Among the 2 jejunal nutrition groups, the levels of plasma gastrin, HCO3- in pancreatic juice, proteinase, amylase, lipase in the JP group were significantly higher than those in the JN group (P<0.05). The above mentioned parameters in the DP group were significantly lower than those in the DN group (P<0.05). The amount of pancreatic secretion, HCO3-,K+, Cl+, Na+ were not significantly different among these groups. The pathological changes were similar among these groups, and the extent of pathological changes was relatively better in the JP group. The amount and density of intracytoplasm zymogen granules of pancreatic acinar cell were not significantly lower than those in the TPN group. Conclusions The delivery of nutrients to the proximal jejunum with elemental low-fat diets did not increase the pancreatic exacrine activity.

To screen and evaluate protein biomarkers for the detection of gliomas (Astrocytoma grade I-IV) from healthy individuals and gliomas from brain benign tumors by using surface enhanced laser desorption/ionization time of flight mass spectrometry (SELDI-TOF-MS) coupled with an artificial neural network (ANN) algorithm. SELDI-TOF-MS protein fingerprinting of serum from 105 brain tumor patients and healthy individuals, included 28 patients with glioma (Astrocytoma I-IV), 37 patients with brain benign tumor, and 40 age-matched healthy individuals. Two thirds of the total samples of every compared pair as training set were used to set up discriminating patterns, and one third of total samples of every compared pair as test set were used to cross-validate; simultaneously, discriminate-cluster analysis derived SPSS 10.0 software was used to compare Astrocytoma grade I-II with grade III-IV ones. An accuracy of 95.7%, sensitivity of 88.9%, specificity of 100%, positive predictive value of 90% and negative predictive value of 100% were obtained in a blinded test set comparing gliomas patients with healthy individuals; an accuracy of 86.4%, sensitivity of 88.9%, specificity of 84.6%, positive predictive value of 90% and negative predictive value of 85.7% were obtained when patient's gliomas was compared with benign brain tumor. Total accuracy of 85.7%, accuracy of grade I-II Astrocytoma was 86.7%, accuracy of III-IV Astrocytoma was 84.6% were obtained when grade I-II Astrocytoma was compared with grade III-IV ones (discriminant analysis). SELDI-TOF-MS combined with bioinformatics tools, could greatly facilitate the discovery of better biomarkers. The high sensitivity and specificity achieved by the use of selected biomarkers showed great potential application for the discrimination of gliomas patients from healthy individuals and gliomas from brain benign tumors.
Adult ; Aged ; Algorithms ; Artificial Intelligence ; Astrocytoma ; blood ; classification ; diagnosis ; Biomarkers, Tumor ; blood ; Brain Neoplasms ; blood ; classification ; diagnosis ; Diagnosis, Computer-Assisted ; methods ; Female ; Humans ; Male ; Middle Aged ; Neoplasm Proteins ; blood ; Neural Networks (Computer) ; Peptide Mapping ; methods ; Protein Array Analysis ; methods ; Reproducibility of Results ; Sensitivity and Specificity ; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization ; methods

Objective　To explore the generative mechanism of bacterial wave growth in view of the open living system of microorganism. Methods　With the single strain of bacterium as the subject, the nonlinear method of the dynamic systems and the analyzing method of the numerical simulation were used to study the effect of the changing environment on the bacterial growth. Results　A mathematical model of the relationship between the bacterial wave growth and environment was established. Conclusion　This model is verified to be scientific and its numerical simulation results are obtained, providing a helpful quantitative analysis for the research on the laws of bacterial wave growth.