This study introduced the producing theory and producing region of electroencephalogram(EEG)signal as well as containing physiological information and analyzed the purpose,method and procedure of EEG signal pattern recognition,as well as the latest development and related medical theory of EEG signal acquisition.The procedure of EEG signal pattern recognition consisted of information acquisition,preprocessmg,feature extraction and selection,classification estimation and recognition.By studying the association between EEG signal and prosthetic movement,it was concluded that EEG signal controlling prosthesis was feasible.Therefore,a prosthetic controlled system was designed based on EEG signal pattern recognition and acquisition.The system initiated from scalp electrode(or prosthetic electrode),passed through differential amplifier circuit(or prosthetic drive circuit),pre-amplifier circuit,trap circmt,med-amplifier circuit,and filter circuit,and finally reached analog-to-digital converter.It was proven to satisfy various

Objective To investigate the effectiveness and safety of minimal invasive surgery combined with ventriculoscope for the treatment of basal ganglia hemorrhage.Methods From June 2014 to June 2015 there were 57 patients with basal ganglia hemorrhage were selected into this study.These patients were signed into the minimal invasive surgery combined with ventriculoscope group and the craniotomy group according to the methods of surgery they received.And the clinical outcomes of the two groups were compared.Results Compared with the craniotomy group,patients in the minimal invasive surgery combined with ventriculoscope group got a significantly lower Glasgow coma scale at 7 days,14 days and 28 days after the operation (P =0.02,0.04,0.04);the hospital stays were significantly reduced in the minimal invasive surgery combined with ventriculoscope group [(21.45 ±5.67)d vs.(25.67 ±7.45)d,P =0.02];and the operation time were significantly reduced as well [(134.45 ±21.11)min vs.(178.65 ±45.32)min,P =0.000)].There was no significant difference in intra-cranial pressure,rate of hematoma clearance,rate of organ functional failure,rate of re-bleeding and mortality 28 days after operation (P >0.05).Conclusion The minimal invasive surgery combined with ventriculoscope is effective and safe for the treatment of basal ganglia hemorrhage,which is worthy of popularization.

Objective To investigate the expressions of p53,p16 protein and the clinical significance in advanced gastric carcinoma. Methods The expressions of p.53 ,p16 were detected by using immunohistochemistry in 24 specimens of normal gastric mucosa and 55 specimens of gastric carcinoma. Results The positive rate of p53 ,p16 in normal gastric mucosa and gastric carcinoma tissues were 0,100% ;67.3% ,30. 9%, respectively (P <0. 05). The positive rate of p53, p16 in non-differentiated、low- differentiated and moderate- differentiated 、high- differentiated gastric carcinoma tissues were 80. 0% ,56.7% and 48. 0% ,56. 0% ,respectively(P <0. 05). Conclusions The abnormal expressions of p53 and p16 play an important role in the course and prognosis of gastric carcinoma. The positive expression of p53 was correlated with the degree of defferentiation of gastric carcinoma. No correlation between the expression of p16 and grade of differentiation was observed.

Animals ; Female ; Injections, Intraventricular ; Male ; Maze Learning ; drug effects ; Memory ; drug effects ; Mice ; Mice, Inbred Strains ; Toluene ; administration & dosage ; toxicity

Objective To investigate the clinical characteristics, location, treatment and prognosis of periosteal osteosarcoma. Methods The data of 1 patient with periosteal osteosarcoma was retrospectively analyzed, and the 35 cases reported in CNKI database in recent years were analyzed. Results The patient of periosteal osteosarcoma was female and 16 years old. Periosteal osteosarcoma occurred in the tibia. The patient was treated with extensional resection, and had no recurrence and metastasis 3 months after operation. Among the 35 patients reported in the literature, the age of onset ranged from 14 to 35, the female was slightly more than the male (19 cases vs. 16 cases), and the lesion site was mainly in the tibia and femur. The 35 patients underwent surgical treatment, and 4 cases had metastasis;6 cases were treated by surgery combined with chemotherapy. Conclusions Female patients with periosteal osteosarcoma were slightly more than male, and the lesion site is mainly in the tibia and femur. The chemotherapy effect is not exact, and extensional resection is the most effective treatment method. The transfer site and the characteristics are not exact.

10.3969/j.issn.2095-4344.2013.24.015

OBJECTIVETo summarize the clinical manifestation and diagnosis of ganglioneuroma in spine and investigate the clinical effect of surgical treatment.

METHODSThe clinical data of 6 patients underwent a surgery for ganglioneuroma in spine from January 2008 to January 2015 were retrospectively analyzed. There were 4 males and 2 females, aged from 2 to 63 years old with an average of 34.6 years. The courses of disease were from 3 days to 17 years. Five patients complicated with superficial hypesthesia in correlative level of tumor, and the muscle strength under tumor plane had decreased at different levels, with the strength of grade II-IV. Two cases complicated with hypermyotonia and positive bilateral Hoffmann's and Babinski sign. Five cases were sporadic lesion in correlative spinal canal and one case complicated with the giant occupying lesion in thoracic cavity.

RESULTSSix operations had been performed including 5 en bloc and 1 subtotal resection. Postoperative pathological results showed tumor cells scattered or fasciculated inserted into Schwann cells in the stroma. In 2 patients complicated with radiculalgia before operation, 1 case was relieved and 1 was invariant after operation. All 4 patients with preoperative dyscinesia in the limbs obtained improvement after operation. All the patients were followed up from 0.3 to 6.8 years with an average of 2.5 years. At the final follow-up, according to ASIA grade, 5 cases were good and 1 case was invariant. During the follow-up, only 1 patient experienced chemoradiation because of merging ganglioneuroblastoma and receiving subtotal resection. No recurrence in other 5 cases.

CONCLUSIONGanglioneuroma is a benign and rare tumors in spine. Clinically, radicular pain and sensory-motor disorders are the main manifestations. Its diagnosis depends on pathological examination. Prognosis of surgical treatment is good.

Adolescent ; Adult ; Child ; Child, Preschool ; Female ; Follow-Up Studies ; Ganglioneuroma ; diagnosis ; surgery ; Humans ; Male ; Middle Aged ; Retrospective Studies ; Spinal Neoplasms ; diagnosis ; surgery

Objective To establish a new rat model of biliary atresia by pure ethanol injection into the common bile duct.Methods A catheter was inserted and fixed in the common bile duct in male SD rats .Saline (8 rats) or pure ethanol (16 rats) was injected through the catheter ,respectively, and the biochemical and pathological changes in the rats were examined .Results SD rats in the experimental group were divided into a persistent injury and a restoration of liver dysfunction groups according to pathological and biochemical detection .In the persistent injury group , biochemical impair-ments were significantly higher at 8 weeks after ethanol injection than those in the control group and restoration group .Dis-tinct pathological changes in the liver were observed using HE , SMA, and Masson staining .Conclusions It is a reliable animal model of biliary atresia induced by injection of pure ethanol into the common bile duct in the rat .It will provide a useful tool in future studies of biliary atresia .

Objective To explore the significance of nuclear factor-?B(NF-?B)activation in peripheral blood mononuclear cells(PBMC)during acute Kawasaki disease(KD).Methods Peripheral blood was collected from children with acute KD(n=30)and healthy age-matched children(n=20).PBMC were cultured in vitro and divided into 3 groups:naturally cultured blank control group,protein kinase C(PKC)activator stimulated phorbol 12-myristate 13-acetate(PMA)group and PMA plus NF-?B inhibitor treated PMA plus pyrrolidine dithiocarbamate(PDTC)group.Percentages of NF-?B activation were detected by immunohistochemistry.Results Under natural culturing,the percentage of cells with activated NF-?B was significantly higher in acute KD blank control group than that in healthy blank control group.The percentage of cells with activated NF-?B was significantly higher in acute KD PMA group than that in acute KD blank group and that in normal control PMA group,respectively(Pa0.05).Conclusions NF-?B activation in PBMC during acute KD is markedly increased,which suggests that NF-?B activation plays an important role in the formation of vasulitis and CAL in this disease.NF-?B activation in PBMCs in children with KD is regulated by the PKC signaling pathway and PDTC obviously inhibits the activation of NF-?B.J Appl Clin Pediatr,2009,24(1):35-37

Raw264.7 cells were incubated with receptor activator of NF-kappa B ligand (RANKL) and α-melanocyte stimulating hormone(α-MSH) for6 d.The amount of osteoclast cells were counted by tartrate resistant acid phosphatase staining and the acid phosphatase activity was assayed.The expressions of 5 melanocortin receptors (MCR) in Raw264.7 cells were determined by RT-PCR.The results showed that the number of osteoclasts in RANKL +α-MSH group was significantly increased compared with RANKL group (P ＜ 0.05),but there was no osteoclast formation in α-MSH group.Compared with control group and α-MSH group,the acid phosphatase activities were significantly increased in RANKL group and α-MSH+RANKL group (P＜0.05).All five MCRs were expressed in the Raw264.7 cells shown by RT-PCR.These results suggest that α-MSH may promote osteoclasts formation through RANK signaling pathway.