Objective:To establish a soft tissue 3-dimension(3D)finite element model of human palate.Methods:Based on the intrinsic finite element model of human maxilla,palatal mucoperiosteum flap with the thickness of 3.06 mm was added on the oral side of the plate model by ANSYS software,material property of the soft tissue was loaded,the soft tissue 3D finite element model of the palate was established.Results:By applying finite element method,the established 3D finite element model could reflect biomechani-cal properties of the soft tissue of the palate on computer.Conclusion:The 3D finite element model of the soft tissue of human palate provides the foundation for further study.

Objective:To study the impact of palatal scar force on the maxilla with unilateral cleft palate by finite element model. Methods:A 3-dimension finite element model of maxilla with cleft palate containing soft tissue was established,the soar force on the maxilla was analyzed by ansys.Results:Cleft area was identified as the center of rotation,cleft side of the maxilla reflected clock-wise rotation and non-cleft side anticlockwise rotation.The maxilla moved from outside to inside in cross section and front to back in the sagittal plane,and the former was greater than the latter.The outside of alveolar process was subjected to stress of mainly drawing force,the inside to stress of mainly compressive force.The deformation of maxilla was mainly in the front-end.Deformation of the alveolar was greater than that of maxilla body.Among deformations of three dimensions,the width was the largest,the length was the smallest,and the height was between both above.Conclusion:Along with the rotation of the maxilla,cleft area becomes gradually smaller.Among the three dimensions,the width is the largest,the length is the smallest and the height is between the both.The af-fect on maxilla is mainly in the front-end.The affect on the alveolar is greater than that on the maxilla body.

Objective To evaluate the relationship between the clinicopathological factors, prognosis and the expression of p16 and c erbB 2 protein in primary breast cancer. Methods The expression of p16 and c erbB 2 by immunohistochemical method was observed in 50 patients with primary breast cancer and the detection of p16 by polymerase chain reaction(PCR) and the point mutation of p16 by PCR single strand conformational polymorphism(SSCP) were detected in 20 patients with breast cancer. Results Among the cancers, positive expression of p16 protein was found in 17(34.00%) cases, c erbB 2 protein positive expression in 24(48.00%) cases. No homozygous deletion in p16 gene was found. However, exon2 point mutation of p16 gene was found in 1 of 20 breast cancer. The results showed no relationship between p16 expression and clinicopathological factor or prognosis. Positive expressions of c erbB 2 protein were often found in breast cancer with lymph node metastasis(P=0.0237) with a poor 5 year survivalrate(P=0.0169). There was no consistent relationship between the expression of p16 and c erbB 2 protein. Neither p16 nor c erbB 2 protein expression could be as an independent prognostic factor. Conclusions The patients with breast cancer of positive expression of c erbB 2 protein has a high lymph node metastasis rate and a poor survival rate. The point mutation rate of p16 gene is lower in primary breast cancer, and it can be a molecular events in advanced primary breast cancer.

ObjectiveTo study the intelligence quotient(IQ) profile of the children with idiopathic generalized tonic-clonic seizure (GTCS) and the factors influencing IQ of them.MethodsAll 28 children with GTCS were selected who were aged 9 ～ 16 years in 20 GTCS families in a mountain area of the south of Anhui Province,all available healthy siblings of the children included in the epilepsy group,did not have epilepsy,and were nearest in age to the children with GTCS ( control group 1 ),and thirty children aged 9 ～ 16 years old who had lived in the same village ( control group 2) entered into our study.The IQ was studied of the three groups of children and the factors influencing IQ of children with GTCS at the same time.The data were input SPSS12.0 and analyzed.ResultsThe IQ of children with GTCS(85.64 ±20.57)was lower than that control group 1( 103.39 ± 11.17)and the control group 2 ( 106.17 ± 11.67).The difference between children with GTCS and the two control groups were significant for almost all the subtest quotients except completion of drawing and picture arrangement.No significant differences were found between the control group 1 and the control group 2 on the IQ and the subtest quotients.IQ scores of children with GTCS showed significant linear correlation with father's education( r=0.453,P＜0.01 ),age at onset of epilepsy( r=0.506,P＜0.01 ),duration of seizure disorder( r=-0.533,P＜0.0l ),status epilepticus( r=-0.732,P＜0.01),total number of seizures( r=-0.761,P＜0.01) and seizure frequency ( r=-0.708,P ＜ 0.01 ).ConclusionThe IQ scores of the children with idiopathic GTCS are lower significantly than general children population.Epilepsy-related variables affecting IQ scores of the children with idiopathic GTCS are duration of seizure disorder,status epilepticus,age at onset of epilepsy,total number of seizures,seizure frequency.

OBJECTIVETo investigate the effects of drug-contained sera (DCS) of Naoluo Xintong (NLXT) and Zuogui Pill (ZGP) on the proliferation and differentiation of in vitro cultured embryonic neural stem cells (NSCs) in rats.

METHODSRat's embryonic NSCs were cultured in medium supplemented with 10% DCS with NLXT and ZGP separately, the effects of DCS in enhancing proliferation and inducing differentiation were observed and compared by phase contrast microscopy and immunofluorescence staining.

RESULTSMajority of NSCs were induced to neurons, astrocytes or oligodendrocytes in medium supplemented with either DCS-NLXT or DCS-ZGP, with the growth of them promoted to some extent. However, DCS-NLXT induced the differentiation rather slowly but with the differentiated neurons more resemble to the mature neuron in morphology, while DCS-ZGP promoted the stem cell growth more effectively.

CONCLUSIONBoth NLXT and ZGP could promote the differentiation and growth of in vitro cultured NSCs, but with exiguous difference. It is feasible to induce the proliferation and differentiation of NSCs by way of using Chinese medicine drug-therapy for supplementing qi and activating blood circulation as well as that for tonifying Shen to generate marrow.

Animals ; Cell Differentiation ; drug effects ; Cell Proliferation ; drug effects ; Cells, Cultured ; Drugs, Chinese Herbal ; pharmacology ; Female ; Male ; Neural Stem Cells ; drug effects ; Pregnancy ; Rats ; Rats, Sprague-Dawley ; Rats, Wistar ; Serum ; chemistry

This study is to investigate the sedative and hypnotic effects of a novel compound H1208. The sedative activity of H1208 was investigated by recording the spontaneous locomotor activity of mice. The hypnotic property was evaluated by the latency and duration of sleep (loss of righting reflex) in mice and the effect of hypnotics on sleep pattern of electroencephalogram were studied in conscious, freely moving mice with chronically implanted electrodes. The brain monoamine neurotransmitters levels in mice were measured by high performance liquid chromatography-electrochemical detection. The spontaneous locomotor activity was decreased by 56.7% and 80.2% in H1208 (5 and 25 mg x kg(-1), ip) treated mice, respectively. The loss of righting reflex was directly induced in mice after H1208 (60 mg x kg(-1), ip) administration. The non-rapid eye movement sleep increased significantly by 131% and 259%, respectively, within 3 hours after H1208 (30 and 60 mg x kg(-1), ip) administration. However, the rapid eye movement sleep decreased significantly. The contents of DA in the striatum and cortex and 5-HT in the cortex decreased significantly. These results demonstrated that H1208 has potent sedative and hypnotic effects, which may be closely related to the decreased contents of DA and 5-HT in mouse brain.
Animals ; Brain ; drug effects ; physiology ; Dopamine ; metabolism ; Electroencephalography ; Hypnotics and Sedatives ; pharmacology ; Mice ; Motor Activity ; drug effects ; Serotonin ; metabolism ; Sleep ; drug effects

Ectodermal Dysplasia 1, Anhidrotic ; diagnosis ; genetics ; Ectodysplasins ; genetics ; Heterozygote ; Humans ; Infant, Newborn ; Male ; Mutation, Missense

Adrenal Cortex Hormones ; therapeutic use ; Anemia, Hemolytic, Autoimmune ; diagnosis ; drug therapy ; Female ; Humans ; Infant ; Treatment Outcome

Objective The mechanism and signaling mechanisms of fracture healing by vasoactive intestinal peptide (VIP) regulating are not clear.We established an selective cut off sensory/motor nerve combined with tibial fracture rat model to study the effects of VIP and microvessel density(MVD) during the fracture healing process after nerve injury.Methods 60 SD rats were randomly divided into 3 groups: tibial fracture + motor nerve (anterior root) cutting group (group ART);tibial fracture + posterior root (sensory nerve) cutting group (group PRT);tibial fracture group (group SO),and each group were 20.Three groups of rats in the model after the establishment of 1W, 2W, 3W, 4W these time points, were killed.The skeleton specimens were obtained in the vicinity of the fracture 5mm, to observe the expression of VIP and microvessel density of the law of change.Results Histology observation showed: new bone trabecular bone callus maturity of PRT group is lower than SO group and ART group at each time points;the immunohistochemical staining showed that compared with callus VIP average optical density of PRT group at 2w and 3w(0.156±0.015、0.163±0.012), SO group(0.216±0.012、0.223±0.010) and ART group(0.198±0.014、0.212±0.016) increased obviously(P<0.05).The detection of callus MVD indicated that compared with callus MVD average density of PRT group at 2w and 3w(26.4±2.2、32.3±2.0), SO group(38.2±2.3、40.6±2.6) and ART group(36.6±2.2、38.5±2.1) significant increased (P<0.05).At the 2nd, 3rd and 4th week, the wet weight of tibia was significantly increased in group ART and SO compared with group PRT(P<0.05),which increased more significantly at 2 weeks.Conclusion The effect of loss of sensory nerve innervation on the formation of microvessel density, callus maturity and fracture healing rate were more pronounced than loss of motor nerve innervation.

Objective To assess the clinical outcome of varicose veins with incompetent great saphenous vein(GSV) treated with ultrasound guided foam sclerotherapy. Methods Forty limbs with moderate to severe symptomatic varicose veins with incompetent GSV in 38 patients were injected with foam sclerosing agent (Fibro-Vein) under ultrasound guidance. There were 36 patients with unilateral varicose veins and 2 with bilateral varicose veins. No of them suffered from deep vein incompetence or perforating vein incompetence. Second injection was performed one month after the initial injection in 7 limbs. Thirty-eight of 40 limbs were followed up with clinical examination and duplex ultrasound scan 30-47 months (mean 40 months) after the treatment. Results Among 38 limbs with follow-up mild debilitation was found in two limbs(5. 3%). There were no other symptoms or complications. Duplex ultrasound demonstrated four type of results: type I, sclerosed GSV trunk with no detectable venous flow in 32 of 38 limbs (84. 2%) ;type II,patent GSV trunk in 3 limbs (7. 9%) ,two of them had mild reflux in the GSV trunk;type III,sclerosed GSV trunk and mild reflux in the GSV tributaries, 1/38(2. 6%) ; type IV,sclerosed proximal GSV trunk,patent distal GSV communicated with a superficial vein and mild reflux in the veins, 2/38 (5. 3% ). Conclusions Clinical examination and duplex ultrasound scan demonstrated excellent results of varicose veins with incompetent GSV treated with ultrasound guided foam sclerotherapy 40 months after the treatment. Sclerotherapy is less invasive treatment option for varicose veins with incompetent GSV with satisfactory clinical and cosmetic outcome.