Coblation is a new technology widely used in the otolaryngology in recent years.This article described the principle,indications,methods and advantages which the coblation was used in pharynx and throat diseases in children.It's a safe,effective and minimally invasive way.

Three hundred cases of E type viral hepatitis were observed with 100 cases of A type as control. We held that the etiology and pathogenesisof E and A types of viral hepatitis were wind, dampness, heat, poisons and stasis, each with its predominance; For A type, its predominant etiology being wind, heat and stasis, while that of E type, dampness, poisons and stasis. For their therapy, the principle of "similar treatment for different diseases " should, adopted. After treatment, ACT, TB, and a markedly decreased, signs and symptoms markedly improved, Epr, IgG also improved to different extents, the cured rate ( rate of negative virus exam) being 80% and 78% for A type and E type respectively. The effect was especially good for simple infection, and rather poor for mixed infection type.

As the patient of hepatitis B and E overlapping infection of liver and gallbladder damp - heat type compared with the patient of simple hepatitis E of liver and gallbladder damp-heat type, attack was very rapid, jaundice exacerbated progressively and hepatic function damaged severely. Aftertreatment the state of illness restored more slowly and the duration of illness was obviously prolonged. At the same time, it was found that the biochemical indexes (hyaluronic acid, total bile acid) increased significantly at acute stage, and the indexes in the patient of overlapping infection in the time for recovering normality at restoration stage was longer than that in the patient of simple hepatitis E, with a significantly difference between the two groups. It is indicated that lesion of the liver in the patient of overlapping infection of hepatitis B and E was more severe than the simple hepatitis E, with no good prognosis.

Objective To investigate cancer suppressor Genes p16, p15 in the brain gliomas expression and its relations with the gliomas pathology graduation and the malignant degree.Methods P16 and P15 protein expression level in human brain gliomas from 63 surgery specimens were assayed by immunobistochemical S-P method.Results P16, the P15 protein expression rate the brain gliomas pathology graduation assumes the inverse correlation with, also compared with the high malignant group the low malignant group (Ⅰ~Ⅱ level) (Ⅲ~Ⅳ level) has the remarkable difference (P

Objective To retrospectively analyze computerized tomography (CT) imaging features of colorectal cancer with chronic schistosomiasis in order to improve the diagnostic accuracy.Methods Eighty patients whose diagnosis was pathologically confirmed as colorectal cancer with schistosomiasis were collected from Tongji Hospital and Kunshan Chinese Medicine Hospital from January 2007 to December 2012.All the patients underwent abdominal plain CT and contrast-enhanced CT scan.The lesion location,morphology,size,calcification features,enhancement patterns and cancer metastasis were evaluated and compared by two radiologists who were blind to the diagnosis.Twenty colorectal cancer cases without schistosomiasis from the same area were also collected as controls.Results CT imaging showed that the tumors all occurred in the colon and rectum in 80 patients,mainly in colon descendens,colon sigmoideum and rectum.The lesion was characterized by irregular bowel wall thickening with soft tissue masses,and the average length of impaired intestine was (21.35 ± 4.50) cm.The lesions were solitary in 68 cases (85.0％) and were multifocal in 12 cases (15.0％).Linear,spotty and small patchy calcifications were seen in all the patients,with margins unclear in 59 patients (73.8％) and margins clear in 21 patients (26.2％).Early phase enhancement was seen in 68 cases (85.0％),of which 45 cases (56.2％) had homogenous enhancement and 23 cases (28.8％) had heterogeneous enhancement.Late phase enhancement was seen in 73 cases (91.2％) and necrosis was hardly seen.Only two cases (2.5％) had liver metastasis without lymphatic metastasis.All the 20 colorectal cancer cases without schistosomiasis presented with single lesion,which was characterized by irregular bowel wall thickening and local ulcer.The average length of impaired intestine was (6.90±3.40) cm.No calcification was seen in these lesions.All cases had early phase lesion with remarkable heterogeneous enhancement with low density necrotic area.The late phase enhancement was decreased.Four cases (20.0％) had liver metastasis.Compared to cases without schistosomiasis,cases with schistosomiasis tended to have multifocal (x2=100,P=0.000) and longer lesion (t=45.506,P=0.000),and more calcification (x2=100,P=0.000).The early phase heterogeneous enhancement was less frequent (x2 =88,P=0.000) and late phase enhancement was more frequent (x2=100,P=0.000).The liver metastasis rate was significantly lower (x2 =8.688,P =0.014).Conclusions The CT imaging of colorectal cancer with schistosomiasis is characterized by calcifications inside the tumor with obscured margins and multiple intestinal segments involvement.Hematogenous metastasis and lymphatic metastasis are rarely seen.

Objective To explore the expression of the Merlin protein in normal cervix and cervical can-cer of the Han,Tibetan and Hui nationalities in Qinghai. Methods Immunohisto-chemical staining was per-formed to detect the expression of Merlin in 108 cases of cervical carcinoma(40 cases of Han,38 cases of Tibetan and 30 cases of Hui nationality)and 107 cases of normal cervix(40 cases of Han,37 cases of Tibetan and 30 cas-es of Hui nationality). Results The positive expression rates of Merlin in normal cervix were 90.0%,91.9%and 86.7%respectively and those in cervical carcinoma were 17.5%,18.4%and 16.7%respectively. There was signifi-cantly statistical difference(P<0.05). However,there was no significant difference in the positive rates of Merlin between cervical carcinoma among different ethnic groups(P>0.05). The expression of Merlin was not correlated with age,FIGO stage,lymph metastasis and cell differentiation(P > 0.05)in cervical carcinoma of three ethnic groups. Conclusion The decrease or even deletion of Merlin may be involved in the development of cervical can-cer,and it plays an important role in cervical cancer. The expression of Merlin exerts no effect on the occurrence of cervical cancer and it is not associated with the clinical characteristics of the patients ,suggesting that it may not be involved in the invasion and metastasis of cervical cancer.

Objective To evaluate the correlation of ADC values on 3.0 T MR with the pathological grades in pT1b clear cell renal cell carcinoma(CCRCC).Methods Conventional MR images,ADC values and Fuhrman pathological grading of pT1b CCRCC were performed in 30 patients.Grade Ⅰ and Ⅱ were defined as low-grade group; grade Ⅲ and IV were defined as high-grade group.The differences of ADC values among four different pathologic grades were compared with a one-way analysis of variance. The comparison of ADC values of two different grade groups was performed with t test,and the ROC curve was performed to evaluate the diagnostic efficacy of ADC value. Correlation between pathological gradings and ADC values was assessed with Spearman rank correlation analysis. Results ( 1 ) The mean ADC value of grading Ⅰ ( 10 patients ), Ⅱ ( 8 patients ),Ⅲ ( 7 patients ),IV ( 5 patients ) was ( 0.94 ± 0.11 ) ×10-3 mm2/s,(0.82 ±0.13) × 10-3 mm2/s,(0.68 ±0.09) × 10-3 mm2/s,(0.59 ±0.03) × 10-3 mm2/s,respectively.Significant differences of ADC values among the four grades were present (F =16.422,P =0.000 ).( 2 ) The mean ADC value of the low-grade group was significantly higher than that of the high-grade group(t =5.738,P =0.000).Sensitivity and specificity of diagnosing the low-grade group was 88.9％ and 83.3％ respectively.There was a negative correlation between pathological grading and ADC value ( r =-0.807,P ＜ 0.05). Conclusions The ADC values of pT1b CCRCC have close correlation with pathological gradings.They can be used to predict the degree of tumor malignancy preoperatively and guide surgical planning.

HIV-1 integrase (IN) is a key enzyme for the viral replication. The protein-protein interaction (PPI) between HIV-1 IN and a cellular cofactor lens epithelium-derived growth factor (LEDGF/p75) is a validated target for anti-HIV drug discovery. In order to build the platform for screening inhibitor against PPI between IN and LEDGF/p75, the vector containing the LEDGF/p75 protein cDNA was constructed and expressed in Escherichia coli and the function of the LEDGF/p75 protein was assayed. The LGDGF/p75 encoding gene optimized according to the preference codon usage of E. coli, was synthesized and cloned into the expression vector pGEX-4T-1 to form a recombined plasmid, then transformed into host cell E. coli BL21 (DE3). The recombined clones were identified and confirmed by BamH I/Sal I digestion and sequencing, the successfully recombined plasmid in the host cell was induced by IPTG and the condition of the expression was optimized. The expressed protein was purified by the Ni2+ affinity chromatography column and SDS-PAGE was used to analyze the molecular weight and specificity. In addition, ELISA assay was used to analyze the function of the recombinant protein. The recombinant LGDGF/p75 was soluble, and expressed highly and stably in E. coli. The protein was proved to enhance HIV-1 IN strand transfer activity in vitro by ELISA. It will be helpful to build the platform of screening inhibitors against PPI between IN and LEDGF/p75.
Cloning, Molecular ; Escherichia coli ; metabolism ; HIV Integrase ; metabolism ; HIV-1 ; physiology ; Humans ; Intercellular Signaling Peptides and Proteins ; biosynthesis ; Protein Binding ; Virus Replication

Objective To study the influence of different root exposure in long-term effect of crown lengthening .Methods To-tally 142 teeths(66 of the front teeths ,46 of premolars teeths ,30 of molars teeths ) of 110 patients collected from August 2010 to October 2012 in stomatological hospital to affiliated zunyi medical college were chosen as research subjects ,then they were randomly divided into the experimental group and the control group .There were 33 anterior teeths ,23 premolar teeths and 15 molar teeths in each group .The experimental group accepted 3 mm root exposure while the control group accepted 4 mm root exposure .The post-operative effect of the two groups was compared .Results The tooth mobility of the anterior cases of control group after 3 months was statistically higher than that of the experimental group (P<0 .05) and the difference of tooth mobility between the two groups in other teeths and times was not statistically significant (P>0 .05) .The bleeding index after 3 months ,the anterior teeths ,premo-lar teeths and molar teeths of the experimental group was statistically higher than that of the control group (P<0 .05) ,while the difference of tooth mobility between the two groups in other times was not statistically significant (P>0 .05) .The postoperative probing difference of depth and attachment loss between the two groups showed no statistically significant (P>0 .05) .Conclusion The root exposure of 3 mm and 4 mm both have a significant effect in crown lengthening .But for the aesthetic point of view ,3 mm should be taken as the root exposure of the anterior cases .

Objective To investigate the correlation of dynamic contrast-enhanced (DCE) MRI features with microvessel density (MVD) and vascular endothelial growth factor (VEGF) in non-small cell lung cancer(NSCLC).Methods Conventional MR imaging and dynamic contrast-enhanced scan in thirty-three patients with NSCLC confirmed by pathologyn were performed. MVD and VEGF were stained with immuno-histochemical technique in all cases. Some parameters of DCE MRI, including maximum slope(Smax) and time to peak(TTP) were put more analysis. The relationship between the results of DCE MRI (Smax and TTP) and that of immuno-histochemistry (MVD and VEGF) was analysed.Results The Smax of adeno carcinoma was higher than that of squamous cell carcinoma,but TTP was lower. The difference was obvious difference(t=3.22,P