OBJECTIVE: To evaluate the features and application of tissue engineered biomaterials in repairing femur defects, and to search an optimal femur substitution.METHODS: Papers published between January 1993 and October 2009 were searched using computer with key words of "tissue engineering, femur defect, mesenchymal stem cells, cytokines and materials" both in English and Chinese. Documents addressing biomaterials and tissue engineered bone in repairing femur defects were included. Repetitive research or Meta analysis was excluded. After that, 21 literatures were selected to discuss the features and application of tissue engineered biomaterials in repairing femur defects.RESULTS: Stem cells technology is obtaining seed cells from myeloid tissues, amplifying in vitro, combining with scaffold material, and in vitro constructing tissue engineered bones. The cultured cells could maintain osteoblast biological characteristics and fully fused with bone tissues at recipient sites, simultaneously, avoid immunological rejection. The combination of materials or modify the material surface could promote cells adhere to materials and increase the cellular biological activity. When transfecting seed cells to bone defect areas using certain carriers, the transplanted calls could form new bones and secret bone growth factor, induce determined osteogenic precursor cells differentiated into inducible ostegenic precursor cells, thereby, fasten the bone healing. The composite materials prepared by three-dimensional virtual surgical simulation and computer numerical control exhibited advantages of composite materials and histological anatomy conjunction, which had perfect appearance.CONCLUSION: Currently, there is no material can fully meet the requirement of bone tissue engineering. Thus, promoting adhesion between cells and materials, increasing cellular biological activity, and maintaining biological functions by combing materials or modifying material surface are the research focuses.

Objective To discuss the clinical features and treatment methods of chronic hydrocephalus after traumatic subarachnoid hemorrhage.Methods A total of 40 cases of chronic hydrocephalus after traumatic subarachnoid hemorrhage were analyzed retrospectively.Results Eight cases improved after treatment of non-operation,the lateral ventricle external drainage was done in 32 cases of chronic hydrocephalus.Shunt tube obstruction occurred in 3 patients,with abdominal,subcutaneous and intracranial infection.The shunting operation device was pulled out and the 3 patients received operation for the second time.Two cases appeared intracranial hemorrhage,and the hemorrhage was absorbed after conservative treatment.Total Glasgow prognosis score was good in 32 cases,with mild disability in 5 cases,moderate disability in 2 cases and severe disability in 1 case.Conclusions Traumatic subarachnoid hemorrhage after chronic hydrocephalus should be early diagnosed and early treated,CT and MRI scan is the effective means to the diagnosis and differentiaion.The lateral ventricle external drainage is good method in treatment.

Objective To study the relationship between balance function and attention in children with attention deficit hyperactivity disorder(ADHD),and guide the clinical intervention and training of ADHD.Methods The Tetrax balance system and the CPT were conducted among 124 ADHD children (age 6.0-14 years) and the normal controls.Results (1) The balance function was different between ADHD and normal controls.In junior grade of elementary school,the Fourier score of ADHD children was significantly higher than that of the normal control group in F1,F2-F4 and F5-F6 (P＜0.05).In senior grade of elementary school,the Fourier score of ADHD children was significantly higher than normal controls in F2-F4 and F5-F6 (P＜ 0.05).There was no significant difference between ADHD and normal controls in junior high school.(2) There was correlation between balance function and attention in children with ADHD.In junior grade of elementary school,the full scale attention quotient was negatively correlated with F2-4,F5-6,F7-8 (P=0.018,0.009,0.010; rs =-0.146,-0.203,-0.189),and the visual attention quotient were negatively correlated with F1,F2-4,F7-8 (P =0.043,0.039,0.046 ; r s =-0.062,-0.071,-0.112).In senior grade of elementary school,the full scale attention quotient was negatively correlated with F5-6,F7-8 (P=0.015,0.033; rs =-0.217,-0.172),and the visual attention quotient were negatively correlated with F1,F7-8(P=0.037,0.045; rs =-0.051,-0.101).In junior high school,the negative correlation was existed between the visual attention quotient with F7-8 (P=0.038,r s =-0.114).Conclusion ADHD children have deficit balance.The balance function of ADHD children matures gradually.There is internal connection between balance and attention,especially for visual attention.

Objective To observe the preemptive analgesia effect of parecoxib sodium in patients undergoing laparoscopic cervical carcinoma radical resection.Methods Seventy patients undergoing laparoscopic cervical carcinoma radical resection were randomly divided into 2 groups with 35 cases each. Parecoxib sodium 40 mg was injected intravenously 10 min before operation and repeatedly given every 12 h. Equal volume physiological saline was given at same time in the control group. Two groups received postoperative PCIA with morphine. The numerical rating scale （NRS） was used to rate pain intensity at following time points：immediately after extubation,2,6,12,18,and 24 h after operation. Twenty-four hour morphine consumption and side effects were recorded.Results The NRS rating of pain at each time point in the parecoxib group was significantly lower than that of the control group （P0.05）,and the total morphine consumption （10.4±7.6）mg was less than the control （17.7±8.9）mg （P0.05）; correspondingly,the incidences of nausea,vomiting and drowsiness were less,and the number of patients left bed for activity was increased in the parecoxib group than those in the control one （P0.05）. Conclusion Preoperative parecoxib sodium 40 mg can improve the analgesic effect of PCIA with morphine,and reduce morphine consumption and the incidences of side effects.

BACKGROUND: Reports of culture condition of olfactory ensheathing cells (OECs) vary. And some methods have bad reproducibility, not appropriate for actual application.OBJECTIVE: To observe the effect of differential attachment, chemicals in combination with trypsin digestion to purify rat OECs in vitro and to compare the effect with differential attachment or chemicals alone.DESIGN, TIME AND SETTING: In vitro controlled observation of cytology was performed at the Laboratory of Department of Human Anatomy & Histology and Embryology, Fujian Medical University from June 2007 to June 2008.MATERIALS: A total of 8 SD rats, 2 days old, were provided by the Laboratory Animal Center of Fujian Medical University.METHODS: The OECs were dissociated from the postnatal rat olfactory bulbs under sterile condition, and seeded in poly-L-lysine-coated culture flask at a density of 4.0×10~8 /L for primary culture. The cells were divided into 4 groups: control group (not purified); chemicals group (5 μmol/L arabinose); differential attachement group (Nash differential attachement); combination group (Nash differential attachement to eliminate most of the fibroblasts, followed by arabinose; when the cells were confluent at 6 days, the cells were digested with 1.25 g/L trypsin for 1 minute until the processes were shrank, cells became round, with some cells floating).MAIN OUTCOME MEASURES: Morphological changes of the cultured OECs and NGFRp75 immunocytochemistry were observed.RESULTS: The OECs displayed a very characteristic morphological appearance. Most of OECs were bipolar or tripolar with long and slim processes. In the unpurified control group the rapidly proliferating fibroblasts were in the majority (60%) after 7 days in culture, and confluent at day 14. The OECs occupied the most in the other groups, and their appearance remained unchanged.The surviving bipolar or tripolar OECs were positive for NGFRp75. The purifity by chemicals and differential attacehment methods was low (75%), while the combination group was high (85%).CONCLUSION: The method of purifing OECs through a combination of differential attacehment, chemicals and trypsinization is effective.

Humans ; Otitis Media

Decision Making, Organizational ; Disasters ; Earthquakes ; Humans ; Public Health Practice ; Stress Disorders, Post-Traumatic

Humans ; Laryngeal Diseases ; prevention & control ; Larynx ; Pharyngeal Diseases ; prevention & control ; Pharynx ; Pulmonary Disease, Chronic Obstructive ; prevention & control

Objective To explore the practicability of self-expanding stent placement treatment in the management of carotid artery stenosis. Methods 14 self-expanding stent treatments were performed at 10 sites carotid artery stenosis in 9 patients with TIA and 70%-95% carotid stenosis. Results All patients were free from TIA. Residual stenosis was

Objective To study the value of laparoscopic cholecystectomy (LC) for treating gallbladder benign diseases in aged patients. Methods Laparoscopy cholecystectomy (3-port or 4-port) was performed in 2335 senile patients with gallbladder benign diseases from December 1992 to May 2005. Results Five patients were found as having the Mirizzi syndrome and were given a subtotal cholecystectomy. In 18 patients with a frozen Callot’s triangle, the anterior wall of the gallbladder was resected and the mucous membrane on the posterior wall was electrocauterized. LC was completed smoothly in the remaining 2312 patients. No conversions to open surgery were needed. The operation time was 8~55 min (mean, 19 min), and the intraoperative blood loss was 1~ 50 ml (mean, 8 ml). An abdominal drainage tube was placed in 213 patients, including double-cannula lavage in 56 patients. The length of hospital stay was 4~16 d (mean, 6 d). Follow-up examinations for 10 days ~13 years in 1859 patients showed no biliary stenosis, gallbladder pouch, or residual stones. Conclusions Laparoscopic cholecystectomy is safe and feasible in aged patients, being the first choice of operative method. Proper perioperative management, careful prevention co-morbidities, and control of operation time as short as possible are important for senile patients.