[Objective]To review the treating effect of cases of the developmental dysplasia of the hip in old age children by a one-stage combined Pemberton operation and femoral shortening and investgate if the hip joint stiffness rate and ischemic necrosis rate of femoral head after operation are reduced. [Method]From June 2002 to Decempber 2006, 136 hip congenital dislocation of 101 old age children (7 years to 14 years) were treated by Pemberton operation and femoral shortening,and were followed-up from 1.5 years to 4 years(average, 2 years and 7 months).[Result]Thirty-one cases can only bend their hip joint below 90 degrees, accounting for 22.79% of all. Thirty-eight ischemic necrosis of femoral head occurred which accounted for 27.94%.The rate of ischemic necrosis of the femoral head and hip joint stiffness of old age children after operation were reduced obviously according to the standard by Salter.[Conclusion]Pemberton operation and femoral shortening are preferred in treating the developmental dysplasia of the hip of old age children.It can reduce the rate of ischemic necrosis of femoral head and hip joint stiffness.

Objective To investigate the application value of low dose high pitch dual source CT angiography technique in diagno-sis of acute aortic dissection.Methods 21 cases of critically ill patients with suspected aortic dissection underwent total aortic angiog-raphy without using ECG by adopting the second generation dual source CT Flash Technology (pitch 3 .2 ,1 0 0 kV and 1 0 0 mAs), using a lower contrast dose (60 mL).Results All subjects accepted as low as possible radiation doses and iodine intake;at the same time,accurate information including aortic intimal tear position,intimal flap,true and false lumen,and lesions involving the range vessel signs and anatomic relationship were received,2 cases of Stanford type A,type B 1 9 cases (2 cases of aortic rupture).Average scan time 2.6 s,average effective radiation dose cm 270 mGy·cm.Conclusion High quality images by using high pitch dual source CT low dose angiography with lower contrast dose provide safe,reliable,real-time screening method for critically ill patients with aor-tic dissection caused by systemic severe compound injury.

Objective To establish a quick method to identify BMSC by fast violet B salt staining and evaluate the clinic value. Methods Smears of separated and cultured BMSC, bone marrow, pleural and ascitic fluids were made, then the staining of fast violet B salt was performed. The BMSC in aplastic anemia (AA), high hyperplasia and normal groups were counted and compared with each other. Meanwhile, the diagnostic value of this method to AA was evaluated. Results The cytoplasm of BMSC presented mauve, while the nucleus were negative, other cells such as myelocytes, nucleated erythrocytes, megakaryocytes, monocytes, macrophages, lymphocytes and plasmacytes were negative. The count of BMSC in AA, high hyperplasia and normal group was 1.07 ± 0. 29, 2. 26 ± 0. 37 and 1.58±0. 33, respectively. Significant differences were found between AA and high hyperplasia groups, AA and normal groups, high hyperplasia and normal groups, respectively (P < 0.01). The sensitivity, specificity, positive likelihood ratio and negative likelihood ratio of this method for diagnosis of AA were 90%, 93%, 12. 86 and 0. 11,respectively. Conclusions The fast violet B salt staining is simple and convenient. It could be used to identify BMSC and play an important role in judging the hyperplasia extent and differentiation of AA.

Objective To approach potential abnormalities of neuro-chemical compounds in cerebrum of obsessive-compulsive disorder and to analyze the relationship among the abnormalities with duration of illness and symptom severity. Methods 19 patients with obsessive-compulsive disorder and 22 comparison subjects were scanned by 1H magnetic resonance spectroscopy to exam bilateral prefrontal lobe, temporal lobe, parietal lobe, occipital lobe, anterior cingutate and caudate nucleus, hippocampus as well as splenium and genu of corpus callosum,thalamus. The ratios of N-acetylaspartate (NAA) and choline (Cho) to creatine (Cr) were respectively recorded.The severities of obsessive-compulsive symptoms were assessed by Yale-Brown Obsessive-Compulsive Scale. Results ( 1 ) The ratios of NAA/Cr in right caudate nucleus and left hippocampus were higher than those in normal controls (1.23 ±0.37 vs 1.0 ±0.33, t=2.14, P=0.039;1.34 ±0.25 vs 1. 10 ±0.45, t=2.41, P=0.021 ), but NAA/Cr ratios in genu of corpus callosum were lower(0. 97 ±0.30 vs 1.19 ± 0. 26, t = -2.47, P= 0.018 ).(2) The Cho/Cr ratios in right caudate nucleus and left temporal lobe were higher than those in control groups (1.09±0.51 vs0. 67±0.21,t=3.32, P=0.003;2.58±0.62vs0.84±0.17, t=2.21,P=0.03). (3) The duration of illness was negatively correlated with the Cho/Cr ratios of right prefrontal lobe ( r = - 0. 507, P =0. 027 ). (4) The NAA/Cr ratios of genu of corpus callosum as well as the Cho/Cr ratios of left temporal lobe were negatively correlated with YBOCS score ( r 1 = - 0.457, P = 0.049; r 2 = - 0. 585, P = 0.009 ). Conclusion Neuronal functions increase in right caudate nucleus and left hippocampus which are opposite in genu of corpus callosum. These abnormalities may play an important role in pathogenesis of OCD.

Objective To explore the characteristics of MRI images and pathological features of demyelinating pseudotumor (DPT).Methods Five patients with demyelinating pseudotumor were histologically confirmed.Their MR imaging were re-viewed and the enhancement patterns were analyzed.Results Among the five cases with demyelinating pseudotumor,single le-sion was found in 4 cases,and multiple lesions in 1 case.Most lesions had a clear boundary and these space occupying lesions were irregular (3 cases).The signal intensity on T1 WI was lower than edema,and it had a specific “core and halo”feature,du-al-high signal with different intensity on T2 WI,slightly higher signal intensity on DWI,and on enhanced MRI,nodular or patch-y enhancement and open ring enhancement with edema around the lesions were observed.The pathological results showed that the demyelination occurred but the neuraxon survived,lymphocytes were infiltrated,glial cells were proliferated,megakaryo-cytes also could be found,and multiple monocyte-macrophages were all around the lesions.Conclusion The MRI of DPT has some characteristic features.

This study was aimed to observe the effects of acupuncture combination with medicated thread moxibustion ofZhuang nationality medicine on neurotransmitters in rats with sleep deprivation. A total of 80 SPF grade healthy Wistar rats were randomly divided into the control group, model group, treatment group and diazepam group with 20 rats in each group. The establishment of insomnia model was through sleep deprivation in the model group, treatment group and diazepam group. Based on the treatment of the model group, the treatment group was treated by acupuncture combination with medicated thread moxibustion ofZhuang nationality medicine, once a day for continuous 14 days. Intragastric administration of diazepam according to 3 mg·kg-1 body weight was given in the diazepam group. While intragastric administration of the same volume normal saline was given to the control group once a day for continuous 14 days. And then, the levels of orexin, NE, 5-HT, CRH and ACTH were detected. The expressions of orexin mRNA and c-Fos were observed. The results showed that compared with the control group, the levels of orexin, ACTH, 5-HT, NE and CRH increased or obviously increased in the model group with significant difference (P < 0.05, orP< 0.01). The expressions of orexin mRNA and c-Fos in the model group were increased or obviously increased with significant difference (P < 0.05, orP< 0.01). Compared with the model group, the levels of orexin, ACTH, 5-HT, NE and CRH reduced or obviously reduced with significant difference in the treatment group (P < 0.05, orP < 0.01). The expressions of orexin mRNA and c-Fos were reduced or obviously reduced with significant difference in the treatment group (P <0.05, orP < 0.01). It was concluded that acupuncture combination with medicated thread moxibustion ofZhuang nationality medicine took an effect on the treatment of insomnia by mediating neurotransmitters associated with hypothalamic-pituitary-adrenal axis (HPA axis) through orexin, which was probably related with its therapeutic mechanism.

Objective To investigate the effect of a combination of second generation high pitch scanning technique of dual source CT and Iomeprol 400 on image quality,total iodine dose and injection speed.Methods Eighty-four patients with clinically suspected aortic disease underwent aorta CT angiography (CTA)were randomly divided into two groups (42 cases in each group).The experimental group used high pitch dual source CTA acquisition mode (pitch 3.2)combined with Iomeprol 400 contrast agent.The control group used conventional CTA scan mode combined with Iopamidol 370 contrast agent.The differences in image quality,effective radiation dose, total iodine dose and injection speed between two groups were compared.Results There were no statistical differences in CT value, signal-to-noise ratio,contrast-to-noise ratio and subjective image quality score between two groups (P>0.05).There were significant statistical differences in CTDIvol,DLP and CT value of the superior vena cava between two groups (P<0.01).The total iodine dose and injection speed were reduced in experimental group.Conclusion The combination of a high pitch scanning technique of aorta CTA with Iomeprol 400 contrast agent can reduce radiation dose and potential hazards of contrast agents on the premise of guaranteeing the image quality.

Objective To determine the audiological characteristics in 832 deaf children with biallelic causative mutations in GJB2 ,SLC26A4 gene .Methods The 832 patients received deafness gene screening ,553 were GJB2 gene biallelic causative mutations ,279 were SLC26A4 gene biallelic causative mutations .Patients were divided into four groups according to ages of hearing loss onset :<1 ,1~3 ,3~6 ,6~12 years old ,and the audiological character-istics and prevalence of GJB2 ,SLC26A4 gene mutations at different ages of onset .Results The prevalence of GJB2 gene mutations at four groups was 37 .97% (210/553) ,38 .34% (212/553) ,16 .27% (90/553) ,7 .41% (41/553) ,re-spectively ;the prevalence of SLC26A4 gene mutations at four groups was 25 .45% (71/279) ,44 .80% (125/279) , 20 .07% (56/279) ,9 .67% (27/279) ,respectively .The difference between GJB2 and SLC26A4 gene was significant(P=0 .001) .The prevalence of profound hearing loss with GJB2 gene mutations at four groups were 66 .67% (140/210) ,61 .32% (130/212) ,47 .78% (43/90) ,41 .46% (17/41) ,respectively .The difference was significant (P=0 .004) ,while the difference in 279 patients with SLC26A4 gene mutations was not statistically significant (P= 0 . 083) .Conclusion The age of hearing loss onset in patients with biallelic causative mutations in GJB 2 or SLC26A4 gene refers to 0~3 years -old ,hearing loss in patients with GJB2 ,SLC26A4 gene mutations gives priority to pro-found .The age of hearing loss onset is smaller ,the ratio of profound hearing loss is higher .Patients with severe and profound hearing impairment should be performed the genetic testing when the age of onset under 12 .

Objective To investigate the optimal condition for the detection of anti-non-galactose (Gal) xenoantigen and antibody in human serum.Mehtods Peripheral blood mononuclear cell (PBMC) obtained from Wuzhishan miniature pig models with α-1,3-galactosyltransferase gene knockout (GTKO) were used as target cells,mixed and incubated with healthy human serum of different concentrations (4.8％,16.7％ and 100％) for 0.5,1.0,2.0,3.0 and 6.0 h,respectively.The abilities of PBMC to bind with IgM and IgG were detected by flow cytometry.Results At the serum concentration of 16.7％,the ability ofnon-Gal IgM to bind with PBMC was significantly enhanced from 0.5 h to 3.0 h incubation (P＜0.01),whereas no statistical significance was noted in terms of IgG (P＞0.05).Increasing serum concentration could also enhance the ability of non-Gal IgM to bind with PBMC.At the serum concentration of 100％ and incubation for 3 h,the ability of IgM to bind with PBMC was the highest among all groups (P＜0.01).At the serum concentration of 100％ and incubation for 6 h,the ability of IgG to bind with PBMC was significantly enhanced (P＜0.05).Prolonging incubation time and increasing serum concentration did not affect the activity of PBMC.Conclusions The optimal condition for detection of anti-non-Gal xenoantigen and antibody is determined.A quantity of 1×105 PBMC from pig should be incubated with 100％ human serum for 3 h for detection of IgM level,or incubated with 100％ human serum for 6 h for measurement of IgG level.This optimized condition contributes to screening the donor pigs which lowly express non-Gal antigen.

The standard of speech disability used in Chinese Second Disability Sampling Survey is introduced in the paper,including classification,screening,survey instrument,diagnose,cause analysis and rehabilitation advice.