Objective To study the effect of Solanum nigrum total alkaloid(SNTA) on sialic acid(SA) and blocking degree of erythrocyte membrane in S_(180) tumor-bearing mice.Methods Using chromatometry to determine the erythrocyte membrane sialic acid and erythrocyte membrane blocking degree.Results SNTA could increase erythrocyte membrane sialic acid level and heighten erythrocyte membrane blocking degree in S_(180) tumor-bearing mice significantly(P

Objective To study the effect of Solanum nigrum alkaloid on erythrocyte immunity function. MethodsStudying the adherence between erythrocyte immunity and tumor-cell of S180 and H22 tumor-bearing mice; By determining with fluorescence polarization (P) and accounting the micro viscosity (?) with DPH as a probe the erythrocyte membrane fluidity of the S180 and H22 tumor-bearing mice could be investigated. ResultsS. nigrum alkaloid could increase the ratio of adherence anadem between erythrocyte and tumor-cell and promote the erythrocyte membrane fluidity of the two tumor-bearing mice. ConclusionThe inhibition of S. nigrum alkaloid on tumor can be accomplished through improving the erythrocyte membrane fluidity of two tumor-bearing mice and renewing erythrocyte immunity of tumor-bearing mice.

OBJECTIVE: To research the correlation between development of sphenoid sinus and age in normal children and adolescents by 3-D CT images. METHOD: Review of CT images of the skulls of 120 children and adolescents aged 0~20 years old. They were divided into five groups. Then reconstructed 3-D shape of the sphenoid sinus, and measureed the maximal anteroposterior diameter, longitudinal diameter, and transverse diameter of the bilateral sphenoid sinus by the 2-D and 3-D approach respectively, then process statistical analysis. RESULT: Pearson analyses revealed a positive correlation between various diameters of sphenoid sinus measured by 2-D and 3-D approach and age (P<0. 05). CONCLUSION The development of sphenoid sinus has a linear correlation with age, and increases with age and growth in Yunnan region. It helps to know the three-dimensional CT images of the sphenoid sinus in children and adolescents by Simplant software, thereby allow the clinicians to understand the current situation of the development of sphenoid sinus. Meanwhile, it contributes to preoperative evaluation of sinus problems.
Adolescent ; Child ; Child, Preschool ; China ; Humans ; Image Processing, Computer-Assisted ; Imaging, Three-Dimensional ; Infant ; Infant, Newborn ; Skull ; Software ; Sphenoid Sinus ; growth & development ; surgery ; Young Adult

AscreeningmethodforcriticalaminoacidsinEpitopesusinganti-Epitopeantibodywasdeveloped. The amino acids' frequency of occurrence in Epitopes of shrimp antigen Pen a1 was calculated using MEGA5 software and their conservative property of tropomyosin in SDAP database bank was analyzed using DNAMAN software. Potential critical amino acids based on these two methods were identified, namely Epitope 1 ( K, E, N) , Epitope 2 ( K, L, E) , Epitope 3 ( E, R, D, L, Q) , Epitope 5 ( K, L, Q) . The mutated polypeptides corresponding to these Epitopes in which these critical amino acids were substituted with alanine were synthesized. The IgG binding ability of these mutants was analyzed by competitive immunodot-blot method and indirect ELISA using Epitope antibody to screen the critical amino acids. Experimental results showed that the critical amino acids of the four Epitopes were as follows: Epitope 1 ( Gln ) , Epitope 2 ( Leu and Glu ) , Epitope 3 ( Leu and Asp) , Epitope 5 ( Leu) . The feasibility of this screening method was proved and it also offered a theoretical foundation for research on sensitization mechanism of Pen a1 and desensitization using gene modification.