Adolescent ; Adult ; Aged ; Child ; Child, Preschool ; Female ; Foreign Bodies ; diagnosis ; therapy ; Humans ; Male ; Middle Aged ; Pharynx ; Young Adult

Nature is abundant in protein scaffolds.By selecting suitable protein scaffold,display and screening methods,the rational and constrained random peptide library(RPL)can be constructed.Compared with the non-constrained RPL,it offered more opportunities for obtaining novel protein structures and more higher affinity ligands against the target molecules.At present,the protein scaffold constrained RPLs have been shown great potential in applications such as target selection,basic research,clinical diagnosis,medical therapy and so on.It is systematically introduced the structure bases,classification and construction of constrained RPL based on scaffolds,as well the recent great advances of application in selection against target molecules with S-S constrained scaffolds,antibodies,Zinc finger protein,Z domain,FN3 domain as important examples.

Objective To evaluate immune function of patients with multiple myeloma ( MM) by detect the changes of the Treg cells in bone marrow of patients with MM .Methods Treg cells in peripheral blood and bone marrow of 45 patients with MM and 15 healthy controls were measured by flow cytometry .Results The per-centage of Treg cells in peripheral blood of MM was higher than that in healthy person ;The percentage of Treg cells in MM bone marrow was lower than that in healthy person ,and the extent was positively correlated with the level of β2-MG and ISS(P<0.05).Conclusion MM Patients display an abnormal level of CD 4 +CD25 +Treg cells,which may be an important mechanism of MM immune deficiency .

Objective To evaluate the characteristics and clinical suitability of the ArcCHECK diode array for volumetric-modulated arc therapy (VMAT) verification.Methods The intrinsic sensitivity,short and long term reproducibility,dose and dose rate dependence,dose per pulsed dependence,field sizes dependence and directional response of the diodes were measured.The results of the diodes were compared with the measurement results of an ionization chamber and calculated results of treatment planning system.Gamma index was used to analyze the dose difference between the calculation and measurement for random selected 211 verified VMAT plans.Results The ArcCHECK performed well for all tests except directional dependence,which varies from a minimum of-3.9％ (seen only when the beam was incident on the diode at 180°) to a maximum of 7.7％ (approximately at 255°).Average gamma analysis passing rates with 3 mm/3％ for 113 nasopharyngeal cancer,48 cervical cancer and 50 rectal cancer patients VMAT plans were 93.5％,95.7％ and 97.5％,respectively,statistical significance has been found between either two of the groups (t=-12.69-4.88,all P＜ 0.01).Conclusions With proposed calibration method,the ArcCHECK diode array is very suitable for VMAT pretreatment verification,the complexity of VMAT plan is the main factor affecting the passing rate.

Objective To investigate the hemodynamic change of venous leakage in venogenic impotence. Methods Thirty-two patients with vasculogenic impotence were evaluated with conventional penile duplex sonography with spectral analysis and color Doppler imaging after intracavernosal injection of PGE1 to induce an erection.The color Doppler appearance of deep dorsal vein of penis,cavernous veins and bulbourethral vein wen observed and the correlativity with resistance index(RI)of cavernous artery were analyzed. Results After five minutes following intracavernous injection,the flow and diameter of the penis vein were continuous increased.The coefficient correlation r between the discharge of deep dorsal vein of penis,cavernous veins and bulbourethral vein with RI of cavernous artery were-0.55,-0.53,-0.24(P＜0.05).Considering the existence of mixed venous leakage,r between the discharge of vein of penis with RI of cavernous artery was-0.88(P＜0.001).Conclusions Higher qualitative ultrasound imaging could demonstrate venous leakage sensitively and assess the location and degree of venous leakage in venogenic impotence initially.

To investigate the impact of respiratory movement to determine the target volume on cone beam CT (CBCT) for lung tumor, we used CIRS dynamic thorax phantom (Model-CIRS008) to simulate the sinusoidal motion of lung tumor. With a constant amplitude, the ratio of the time of near-end-expiratory and near-end-inspiratory (E/I) changed when it was scanned with CBCT. We analyzed the contrast changes of target by extracting the CT value of each pixel on the center line of the target movement direction. The targets were contoured with region growing method and compared with the motion volume generated by the tumor trajectory method. The result showed that the contrast of near-end-expiratory increased and the contrast of near-end-inspiratory decreased with increasing E/I. The contoured volume generated by region growing method decreased with increasing E/I. When E/I = 4, the amplitude A = 1 cm, diameter of 1 cm and 3 cm target volumes were reduced by 48.2% and 22.7%. The study showed that CBCT was not suitable to be used to accurately determine the range of lung tumor movement. The internal target volume (ITV) may be underestimated in CBCT images.
Cone-Beam Computed Tomography ; Humans ; Lung Neoplasms ; diagnostic imaging ; Movement ; Phantoms, Imaging ; Respiration

To study photosynthetic characteristics and its influencing factors in leaves of medicinal plant Mirabilis himalaica, and provide an evidence for guiding artificial planting and improving the quantity. The light-response and diurnal photosynthesis course of leaves at the booting stages of 1-3 year old M. himalaica were measured with LI-6400 system. The Results showed that the light response curves were fitted well by non rectangle hyperbola equation (R2 > or = 0.98). The values of the maximum photosynthetic rate (Pmax) and light use efficiency of three-year old M. himalaica leaves were higher than those of 1-2 year old individuals. The diurnal variation of net photosynthetic rate (Pn) and stomatal conductance (Gs) of 2-3 year old M. himalaica were typical double-peak curves determinately regulated by stomatal conductance. However, transpiration rate (Tr) of 1-3 year old plants leaves were single-peak curve, which was self-protection of harm reduction caused by the higher temperature at noontime. Correlation analysis showed that the changes between photosynthetic active radiation (PFD), air temperature (T ) and Pn, were significant positive related. Therefore, M. himalaica is a typical sun plant, which should be planted under the sufficient sunshine field and prolong the growing ages suitably in order to improve the yield.
Breeding ; Mirabilis ; growth & development ; metabolism ; Models, Biological ; Photosynthesis ; Temperature ; Time Factors

Objective To observe the effect of anti-pyretic and anti-inflammatory of Shufeng Jiebiao decoction.Methods Intraperitoneal injection of Lipopolysaccharides (LPS) was made to cause fever in rats and then to observe the anti-pyretic effect of Shufeng Jiebiao decoction.Intraperitoneal injection of glacial acetic acid was made to led inflammatory exudate in rats and then to observe the anti-inflammatory effect of Shufeng Jiebiao decoction.Smearing cylene in auricles was done to cause inflammatory swelling in rats and then to observe the effect of the alleviation of the inflammatory swelling of Shufeng Jiebiao decoction.Results ①The temperature of rats in the group of the aspirin and the Shufeng Jiebiao decoction were become lower at each time.The basic temperature of the model control group was (37.14±0.39) ℃,the temperature in the first hour was (40.31±0.34) ℃,the second hour was (40.44±0.44) ℃,the fourth hour was (40.24±0.34) ℃,the sixth hour was (40.05 ±0.44)℃,and the eighth hour was (39.85 ±0.37)℃.The basic temperature of the aspirin group was (37.13±0.33)℃,the temperature in the first hour was (38.74±0.42)℃,the second hour was (38.86±0.33) ℃,the fourth hour was (39.05±0.36)℃,the sixth hour was (38.74±0.37)℃,and the eighth hour was 38.64±0.24) ℃.The basic temperature of the Shufeng Jiebiao decoction group was (37.03±0.46) ℃,the temperature in the first hour was (39.02±0.49) ℃,the second hour was (38.82±0.49) ℃,the fourth hour was (38.63±0.46)℃,the sixth hour was (38.62±0.52)℃,and the eighth hour was (38.42±0.44)℃.The differences were statistical significance compared with the model control group (P＜0.01),the onset of anti-pyretic of the Shufeng Jiebiao decoction group was slower than the aspirin group,but it had a longer lasting effect.Moreover,the rats' temperature decrease of the Shufeng Jiebiao decoction group in the fourth hour had a statistical significance compared with the aspirin group.(P＜0.05).② After the intevention of aspirin and the Shufeng Jiebiao decoction,the optical density of evans blue:the model control group was (0.221 ±0.045),the aspirin group was (0.162±0.053),the Shufeng Jiebiao decoction group was (0.176±0.049),the permeability of the abdominal capillary of the rats reduced significantly (P＜0.01).The intervention of the aspirin and the Shufeng Jiebiao decoction had almost no difference.③ After the intervention of the dexamethasone and the Shufeng Jiebiao decoction,the weight of the auricals:the model control group was (1.94±0.55)mg,dexamethasone group was (1.18±0.40)mg,Shufeng Jiebiao decoction group was (1.04±0.41)mg,showing the degree of the swelling of auricals decreased obviously (P＜0.01).The intervention of the dexamethasone and the Shufeng Jiebiao decoction had almost no difference.Conclusion Shufeng Jiebiao Decoction had anti-pyretic and anti-inflammatory effects.

AlM: To introduce a new color pediatric visual acuity chart and its clinical application.
METHODS:The color pediatric visual acuity chart was designed based on principle of visual angle. The optotype on the color chart had graphics. The progression rate of optotype size between 2 lines was 10 10 and 1. 2589. A regular geometric progression of optotype sizes and distribution was employed to arrange 8 lines with 11 optotype on the color chart. The testing distance was 3m. The visual acuity score could be recorded as logarithm of the minimum angle of resolution notation or decimal notation. The reliability of naked distant measurements with this new chart was tested in one eye of 100 children (4 ~ 6 years old) taking the Chinese national standard logarithm visual acuity chart standard.
RESULTS: The color pediatric visual acuity chart and logarithmic chart controls, visual acuity test results that in the two groups had no significant difference (t=1. 2671, P> 0. 05 ). Two sets of vision data existed positive correlation (r= 0. 924, P<0. 01). Cooperation rate was 100%, the recognition rate was more than 90%.
CONCLUSlON:Children are easier to accept used new color pediatric visual acuity chart to inspect vision. New chart is reliability and apply to children's vision screening.