OBJECTIVE To describe the sonographic features of carotid body tumor(CBT), and determine the utility of ultrasonography as a diagnostic study in the preoperative patients. METHODS Sonograms of 60 patients with 65 CBT were reviewed with gray scale and duplex Doppler sonography. The evaluated features included the location, size, margins, shape, internal echogenicity, the relationship between the tumor and the carotid artery,and blood flow velocity. RESULTS All carotid body tumors were located at the carotid artery bifurcation. Well-defined, solid, weakly hypoechoic masses were noted on gray scale sonography in the carotid bifurcation. Color Doppler sonography showed hypervascularity in 61 masses. Pulsed Doppler analysis of blood flow within the tumor mass was possible in 61 CBT, and low-resistance waveforms were obtained from multiple sites within the mass in all cases. CONCLUSION The ultrasound characteristics of the CBT possess specificity to some extent. Duplex Doppler ultrasound can provide the relationship between the tumor and the carotid artery,and provide important information of intratumor blood flow,which has important value in the diagnosis of CBT.

International Cooperation ; Nephrology ; trends ; Pediatrics ; trends

Objective:To prepare anti-AchR monoclonal antibodies from rat bone marrow.Methods:The extracellular region of human AchR ?1 subunit was expressed in E.coli and purified using a Ni-NTA column.Then the protein was refolded by dialyzing.Lewis rats were immunized with purified AchR ?1 subunit and B cells from bone marrow and spleen were fused with myeloma cells to generate monoclonal antibodies.Results:Human AchR ?1 subunit was successfully expressed in E.coli.Rats immunized with the refolded protein were shown symptoms of Myasthenia gravis.Hybridoma cells were produced using B cells from rat bone marrow and spleen.Conclusion:Bone marrow cells can be immortalized using hybridoma method,which can be used for further study of Myasthenia gravis.

Bone marrow microenvironment is a complex network consisting of hematopoietic stem/pro-genitor cells (HSPCs),non-hematopoietic cells,extracellular matrix and various cytokines.Its components interact to support normal hematopoiesis.Emerging evidence indicates that the dysfunction of mesenchymal stem cells,myeloid-derived suppressor cells,cytokines and the epigenetic alterations of HSPCs in the bone marrow microenvironment could influence normal hematopoiesis.Abnormal hematopoiesis contributes to the occurrence of hematological malignancies,such as myelodysplastic syndromes (MDS).Animal models have confirmed that bone marrow microenvironment plays an important role in the original generation and maintenance of malignant diseases of hematopoietic system.

Objective To study the countermeasures for preventing medical disputes-induced group events by ana-lyzing the related papers.Methods Distributions of publication years, institutions of authors, and subjects in pa-pers on medical disputes-induced group events in 2006-2013 covered in Wanfang Data Knowledge Service Platform and CNKI were analyzed by bibliometrics.Results A total of 676 papers on medical disputes-induced group events were published in 2006-2013 .Their authors were mainly from medical educational institutions or medical and health institutions.The number of papers on medical tangles, relation between physicians and patients, legal con-struction, reasons for medical disputes was significantly larger than that of those on the third partymechanism and medical liability insurance .Conclusion Certain advances have been achieved in study on medical disputes-induced group events.However, there is a room for their improvement, further studies are thus needed.

TFL1 homologs play important roles in maintaining vegetative growth and inflorescence meristem identity. The plants without the function of this gene usually are flowering earlier. Their normal inflorescence development is inhibited, the inflorescence meristem eventually acquired floral identity, which producing a terminal flower. Up to now, the TFL1 homologs have been isolated from 28 species of plants, including Arabidopsis, Snapdrogen and Tomato. The phylogenic tree of TFL1 proteins is almost accordance with the relative of those plants. The inflorescence identity gene TFL1 interacted with floral meristem identity genes LFY and AP1, so as to retard the transformation from inflorescence identity into floral identity. These meristem identity genes such as TFL1 and LFY can be applied in breeding of earl-flowering cultivars, there also have plenty of potentials in breeding fruit-free plantanus, popular or willows.

In order to gain the strain which has high growth vigor and whose biomass concentration satisfy further fermentation to produce arachidonic acid, we took the yield of microbes olein and arachidonic acid as evaluative index, adopted twice ultraviolet mutation, determined the time of ultraviolet irradiation by single factor expriment, and then the content of the arachidonic acid was measured by GC. The results of this experiment showed that the power of viltalight lamp was 20 W, exposure distance was 30 cm and exposure time was 80 s, lethality of spores of Mortierella isabellina was 76.4%. After twice ultraviolet mutation and repeatedly screen, a mutation of Mortierella isabellina Z80s2-109 whose arachidonic acid concentration in biomass were 3.77 times of the control strains was obtained and genetic stability.

Child ; Congresses as Topic ; Humans ; Nephrology ; Pediatrics

Objective To investigate the efficacy and mechanism of mongolian medicine Menggenwusenrile in the treatment of imiquimod -induced psoriasiform skin inflammation in mice.Methods Fifty cases of BALB/c female mice were randomly divided into normal control group, model group, Menggenwusenrile low, middle and high dose groups, 10 cases in each group.Normal control group was given 0.3% sodium car-boxyl methyl cellulose(CMCNa) 2 mL/100 g, once a day intragastric administration for consecutive 21 days.Modal group was given 0.3%CMCNa 2 mL/100 g, once a day intragastric administration for consecu-tive 21 days.Menggenwusenrile low, middle and high dose groups were given 0.33, 0.66, 1.32 g? kg-1 , once a day intragastric administration for consecutive 21 days.The expression of proliferating cell nuclear anti-gen ( PCNA) , transforming growth factor-α( TGF-α) , tumor necrosis factor-α( TNF-α) , platelet endothelial cell adhesion molecule-1/CD31 (CD31), vascular endothelial growth factor (VEGF)and Toll -like receptors-2 ( TLR-2 ) were detected by immunohistochemical stai-ning.Results Six kinds of immunohistochemical analysis showed the each drug dose group was higher than the model group, high dose is bet-ter than middle dose group, the middle dose group is better than low dose.Conclusion Menggenwusenrile have a better therapeutic effect in imiquimod-induced psoriasiform skin inflam-mation in mice.

Objective To investigate the relationship between androgen receptor CAG-gene polymorphism and androgen in male with salt sensitive hypertension.Methods Through the oral saline loading test and furosemide volume method male hypertension group were divided into salt-sensitive (SS group) and salt-insensitive (SR group).The samples from 161 males were selected in the study,including salt sensitive hypertension patients (SS group,61/161),salt-insensitive hypertension patients (SR group,40/161) and age-matched healthy samples (control group,60/161).All samples were sequenced with an analysis method (CAG) n repeated polymorphism,and determinated of total testosterone (TT) and free testosterone (FT) level in serum by electrochemiluminescence immunoassay.Results The number of CAG repeats was 14～34,average 22.4± 2.7.The CAG repeats of SS,SR and control group were 23.5±3.75,22.3±3.17 and 21.8±2.95,respectively.There were significant differences among the three groups (t=2.627～ 3.257,all P＜0.05).The level of TT and FT in SS and SR group were decreased compared with that of control group.At the same time,the level of SS group was lower,and there were significant differences among the three groups (t=2.524～ 3.826,all P＜0.05).Conclusion The androgen receptor gene repeat length and androgen levels are associated with male hypertension,especially salt-sensitive hypertension.Long (CAG) n repeat polymorphism maybe a genetic factor in the pathogenesis of hypertension.Plasma androgen levels may be used as a predictor of male salt sensitive hypertension.