Aldosterone ; pharmacology ; Animals ; Animals, Newborn ; Cells, Cultured ; Endothelins ; metabolism ; Myoblasts, Cardiac ; drug effects ; secretion ; Nitric Oxide ; metabolism ; Rats ; Rats, Sprague-Dawley

Objective To study the construction of tissue engineering fat filler and the survival of fat particles.Methods Stromal vascular fraction (SVF) was derived from inguinal subcutaneous fat of rabbits,mixed with autologus mature fat particles and with or without neuropeptide Y to construct PLGA composite tissue.The complex was subcutaneously transplantef into back sites of the rabbits.Based on the different combination five groups were divided:Group A:PLGA + mature fat particles without NPY;Group B:PLGA + mature fat particles + NPY;Group C:PLGA + complex of SVF with mature fat particles without NPY;Group D:PLGA + complex of SVF with mature fat particles + NPY;Group E:Complex of SVF with mature fat particles + small ball with NPY.Diffenrence of virous constructive ways and fat particle survival was evaluated by general observation,histological staining,fluorescence tracing at two weeks,one month and three month after operation.Results Group D was superior to groups A,B,C and E in survival volume,graft texture and vascularization at one mouth and three mouths.The fat average srvival rate was 57.5±2.5％.Fat cell grew well,and precursor cells proliferated and differentiated actively.Conclusions High quality tissue engineering materials are successfully established with SVF-mature fat particle complex,PLGA and NPY,which could obviously improve fat particle transplantation.

Animals ; Coal Tar ; toxicity ; Comet Assay ; DNA Damage ; drug effects ; Mice ; NIH 3T3 Cells ; drug effects

Objective To explore the relationship of GFAP, NDKA and PARK7 serum concentrations of patients with IS, and their diagnose and prognosis value in IS. MethodsThe serum concentrations of GFAP, NDKA and PARK7 were detected in 37 IS patients, 28 ICH patients and and 30 healthy persons by ELISA. These indexes of patients were detected in 12 hours, 3 d and 14th day after onset of ischemic stroke. Their neurological injury status were also evaluated by MESSS at corresponding time points, and their activities of daily living were evaluated by BI at 14 d discharge from hospitaL At the same time, the diagnostic efficiency was analysed for IS using the three biomarkers and the combined detection. ResultsIn IS group, the serum concentrations of GFAP in 12 hours, 3rd and 14th day after onset were (5. 49 ±2. 25 )μg,/L, (5. 17 ± 2. 29) μg/L and (5. 96 ± 2.39 ) μg/L, respectively. The serum concentrations of NDKA were 9. 15(6.28 -12.79) μg/L, 9. 13(6.31 - 12.23) μg/L, 9.31(6.40 - 11.83) μg/L respectively,and the serum concentrations of PARK7 were (32. 71 ±6. 34 ) μg/L, (31.23 ±6. 04) μg/L, (32. 79 ±6. 94) μg/L respectively. The serum levels of GFAP, NDKA and PARK were respectively (4. 62 ± 1. 56)μg/L, 4. 24(3. 30 -5. 61 ) μg/L, ( 14. 25 +2. 65) μg/L in healthy control group. The levels in IS groups were remarkably increased compared with the healthy control group except the level of GFAP in the 3rd day (t = 1. 129, P＞0. 05). The levels in other time points were significantly different between patients group and healthy control. t value of GFAP were respectively 2. 642, 1. 870,P＜0. 05; Z value of NDKA were 6. 173, 6.100, 6.278,P ＜0. 01; t value of PARK7 were 14.964, 15.367,16.060, P ＜0. 01. The specificity and sensitivity of the individual detection for diagnosis of IS was 46. 7％ (14/30) and 81.1％( 30/37 ) for GFAP, 90. 0％ ( 27/30 ) and 78.4％ ( 29/37 ) for NDKA, 96. 7％ (29/30) and 97.3％ ( 36/37 )for PARK7. The specificity and sensitivity for combined detection of 3 biomarkers was 96. 7％ (29/30) and 100％ (37/37). The combined detection achieved better specificity and sensitivity. Moreover, the risk of IS with higher level GFAP was 1. 3 times that of the controls ( OR = 1. 300, P = 0. 044 ). The risk of higher NDKA was 1.7 times higher( OR = 1. 668, P = 0. 036 ). The risk of higher PARK7 was 1.8 times higher (OR = 1. 809, P =0. 005 ). The serum levels of GFAP were significantly different between IS and ICH in 12 h(t= 4.097, P=0.000). The serum concentrations of GFAP, NDKA and PARK7 were positively correlated with MESSS score at different time points. In IS, r value were 0. 534, 0. 482, 0. 357 , P ＜ 0. 05at less than 12 h; r value were 0.433, 0.487, 0. 299,P value were 0. 007, 0. 002, 0.073 at 3 d;r value were 0. 394, 0. 200, 0. 084,P value were 0.016, 0. 236, 0.620 at 14 d. And the serum levels of GFAP,NDKA and PARK7 were negatively correlated with BI score at 14th day, r value were -0. 430, -0. 321,-0.076,P value were 0.044,0.050,0.657. Conclusions The concentrations of GFAP, NDKA and PARK7 in serum are closely related with IS. The increased seruro levels of these indexes are risk factors in IS. The detection of these indexes could be helpful for the early diagnosis, timely treatment and prognosis assessment for IS.

To explore the new method of discriminating Cistanche deserticola, Cynomorium songaricum and Orobanche pycnostachya by using PCR amplification of specific alleles. 30 samples of the different C. deserticola, 21 samples of C. songaricum and O. pycnostachya were collected. The total DNA of the samples were extracted, the ITS sequences from C. deserticola, C. songaricum and O. pycnostachya were amplified by PCR and sequenced unidirectionally. These sequences were aligned by using ClustulW. Specific primer was designed according to the ITS sequences of specific alleles, and PCR reaction system was optimized. Additionally, compare with the identification of specific PCR method and DNA sequence analysis method. The result showed that the 331 bp identification band for C. deserticola and the adulterants not amplified bands by a single PCR reaction, which showed good identification ability to the three species. PCR amplification of specific alleles can be used to identify C. deserticola, C. songaricum and O. pycnostachya successfully.
Alleles ; Cistanche ; classification ; genetics ; DNA Primers ; genetics ; DNA, Intergenic ; genetics ; DNA, Plant ; genetics ; Drug Contamination ; prevention & control ; Phylogeny ; Polymerase Chain Reaction ; methods

Sanqi (Panax notoginseng) is a valuable unique herb, and is also one of the very fast developed varieties of traditional Chinese medicines in recent years with increasing role in traditional Chinese medicine industry. This paper summarized the main experience, industry development and present situation, pointed out the main problems existing in the industry development. On this basis, we put forward the targets and measures for the development of the Sanqi industry in to provide decision-making reference for the sustainable development of the Sanqi industry in China.
China ; Drug Industry ; economics ; trends ; Drugs, Chinese Herbal ; analysis ; economics ; Medicine, Chinese Traditional ; economics ; trends ; Panax notoginseng ; chemistry ; growth & development

Objective To assess the capability of monochromatic energy images of Gemstone spectral imaging(GSI) in reducing artifacts caused by metallic implants. Methods Twelve subjects with metallic implants underwent GSI (Discovery CT750 HD, GE Healthcare, Milwaukee ). The metallic orthopedic implants included 3 patients of dentures, 2 patients of cervical spinal vertebraplasty, one clavicle fracture fixation, one lumbar spinal vertehraplasty, 3 patients of artificial femoral head, one iliac fracture fixation and one tibial fracture fixation. GSI was performed by using a single source ultra-fast dual energy X-ray switching (80 kVp and 140 kVp). Following GSI scanning, thin slice images were reconstructed into 1.25 mm slice thickness. The monochromatic energy images were set to the same window width and level (window width 1500 HU,window level 500 HU). The artifact indexes (AI) at different kiloelectronvolts (keV) images were measured and compared. 3D reconstruction was performed using images with minimal AI. Result The artifacts index on monochromatic energy images varied with the change of keV. Of the images from 12 subjects, the maximal AI ranged between 145-225 at 40 keV, and minimal AI ranged between 15-90 at the 95-140 keV. The artifacts are clearly visible on polychromatic energy images and the artifacts are reduced markedly on the monochromatic energy images with minimal AI. Conclusion The artifacts caused by metallic implants can be reduced significantly by GSI with high keV monochromatic energy images.

A new teaching method was developed in the curriculum of Harmful Microorganisms Control Technology.It is characterized by students’ self-learning followed by student’s instruction.Both students and teacher have succeeded in this model after four stages of practice,in which a pleasant learning atmosphere was created in the classroom.An effective interaction between teacher and students was achieved.Students are viewed as main objects in the classroom and they are encouraged to ask questions,to formulate their own ideas,or to find things out for themselves.Thus,students’ abilities including presentation,communication,competition,and cooperation were enhanced.By adapting their role to the new teaching method,teachers have also improved their teaching skill and strategies.

In MAST (mRNA accessible site tagging),the DNA tags from synthesized library were employed for identifying mRNA accessible sites. A large number of tags were amplified and subcloned for sequencing to verify mRNA binding profiles. A PCR was designed by using one primer which bridges over the tag terminal sequences. In PCR reaction DNA tag fragments were concatemerized by a bridge primer in reaction cycles. The concatemerized tag fragments were subcloned and sequenced. Dozens of the concatemerized sequences contained thousands tags. The PCR was a simple,effective way which for sequencing tags in a high through put manner.

Objective To explore MRI manifestations of incomplete healing of the uterine incision after abdominal delivery.Methods Nine patients with clinical suspected incomplete healing of the uterine incision after abdominal delivery underwent cavitas pelvis MRI scans with 3.0T MRI.Results According to the characteristics of the MRI images,healing conditions of the uterine incisions were divides into 2 groups.GroupⅠwas showed that the uterine incision healed well,the uterine junctional zone and myometrium were continuous,and the incision scar was linear low signal intensity on T2 WI (2 cases,22%).GroupⅡwas showed that the uterine incisions healed incompletely,the uterine junctional zone and myometrium were discontinuous,and the myometrium edema was in some cases with high signal intensity on T2 WI (7 cases,78%).Conclusion MRI could directly displays incomplete healing of the uterine incision after cesarean section,provide the basis for clinical diagnosis and treatment.