OBJECTIVETo explore the effect of Tanshinone II A on severe acute pancreatitis (SAP) lung injury (ALI) rats and its possible mechanism.

METHODSSD rats were injected with sodium taurocholate to induce SAP group, and then intervened with sodium tanshinone II A sulfonate ( STS group). Simultaneously a sham-operation group (SO group) was set up. There were 24 rats in each group. The survival state and wet-to-dry weight ratio of lung tissues were observed. Activities of myeloperoxidase (MPO) in lung were determined by MPO reagent kit. Pathologic changes of lung tissues were determined by Hofbuaer method. Expression levels of three cytokines, TNF-alpha, IL-1beta, and intercellular cell adhesion molecule-1 (ICAM-1) were detected by ELISA.

RESULTSThe survival state of rats in the SAP group was deteriorated. The wet-to-dry weight ratio, MPO activities, pathologic changes in lung tissues, and expression levels of TNF-alpha, IL-1beta, and ICAM-1 increased significantly more in the SAP group than in the SO group (P < 0.05). Compared with those in the SAP group, the survival state of rats in the STS group was improved; the wet-to-dry weight ratio, MPO activities, pathologic changes in lung tissues, and expression levels of TNF-alpha, IL-1beta, and ICAM-1 obviously decreased in the STS group (P < 0.05).

CONCLUSIONTanshinone II A had remarkable effect on SPA LI rats, which might be associated with changing cytokines levels and attenuating infiltration of lung inflammatory cells.

Acute Lung Injury ; drug therapy ; Animals ; Cytokines ; metabolism ; Diterpenes, Abietane ; pharmacology ; therapeutic use ; Intercellular Adhesion Molecule-1 ; Interleukin-1beta ; Lung ; Pancreatitis ; drug therapy ; Peroxidase ; Rats ; Rats, Sprague-Dawley ; Taurocholic Acid ; Tumor Necrosis Factor-alpha

AIM: To establish HPLC for determination of 2,3,5,4′tetrahydroxystilbene-?-O-?-D-glucoside in Radix polygoni multiflori preparata. METHODS: The column was diamonsil C_(18)(5 ?m,4.6 mm?250 mm).The mobile phase was CH_3CN-CH_3OH-H_2O(10∶20∶70) and ?=320 nm.The flow rate was 1.5 ml/min. RESULTS: The linearity was in the range of 0.0253-0.3542 ?g.The average recovery and RSD were 99.34% and 0.49%,respectively. CONCLUSION: The method is simple,precise and reproduciable and can be used for determination of 2,3,5,4′-tetrahydroxystilbene-?-O-?-D-glucoside in Radix polygoni multiflori preparata effectively.

Objective To clone and compare RNase HIIa and RNase HIIb of Chlamydia pneumoniae AR39(CpRNaseHIIa and CpRNaseHIIb). Methods Genes of CpRNase HIIs were amplified with the designed primers.Then,the recombinant plasmids were constructed,and CpRNase HIIs were expressed and purified with pET expression system.The 5′-32P-labeled RNA/DNA substrate and DNA with oligoribonucleotides substrates were prepared to identify characterization of CpRNase HIIs. Results Ribonuclease H activity of both CpRNase HIIa and CpRNase HIIb could cleave oligoribonucleotides strand,generating break with 3′-OH and 5′-phosphate ends.The results showed that there was different biochemical characterization between them. Conclusion CpRNase HIIa and CpRNase HIIb have different functions in C.pneumoniae.

Objective To study the effect of Thy-1.1 stem cell transplantation on endothelial hyperplasia and restenosis.Methods Thirty 4-6 weeks male SD rats were sacrificed to obtain the Thy-1.1 stem cells.Carotid artery were injured by ballon in sixty female SD rat's were randomized to receive stem cell transplantation(5?10~6 Thy-1.1,n=30)or saline approach(n=30).About 5?10~6 Thy-1.1 stem cells were injected into the injured arter- y after carotid artery injury;while the control rats underwent carotid artery injury and was injected the same amount of saline.The animals were sacrificed,3,7,14,21 and 28 days after balloon denudation.The samples of carotid artery were harvested for pathological examination,RT-PCR and in situ hyhridzation(ISH)were used to detect the transplanted cells in the injured artery.Results The intimal thickness was thinner in stem cell transplantation group(I/M,Stem cell transplantation group:2.06?0.28 vs control group 2.42?0.19,P

Brain ; diagnostic imaging ; pathology ; Cerebral Palsy ; diagnosis ; pathology ; Cognition Disorders ; diagnosis ; pathology ; Early Diagnosis ; Humans ; Infant, Newborn ; Infant, Premature ; Infant, Premature, Diseases ; diagnosis ; pathology ; Language Disorders ; diagnosis ; pathology ; Leukomalacia, Periventricular ; complications ; diagnosis ; pathology ; Magnetic Resonance Imaging ; methods ; Prognosis ; Radiography ; Severity of Illness Index

Allergy and Immunology ; Congresses as Topic ; Humans

Biomass is a renewable resource, which can be transformed into useful chemical products. The effects of dilute hydrochloric acid on the hydrolysis of steam explosion pretreatment of corn straw were studied. This article developed the application research of ergosterol using corn straw hydrolysates as fer- mentation substrates. The results showed that when corn straw was hydrolyzed with 1.5% hydrochloric acid, temperature at 90?C, hydrolysis for 3 h and the corresponding solid to liquid ratio at 10%, the reducing sugar content can reached up to 53.3% and cellulose conversion efficiency was 79%. The optimal fermental pa- rameters were as follows: 6.0 oBx of corn straw hydrolysates, corn concentration steep water at 4%, pH 7.5, 10% of inoculation, 28?C cultivated for 32 h. Under these conditions, the yeast biomass up to 8.5 g/L and the ergosterol content up to 2.35%. The infrared spectrometer and the X-ray diffract meter used to characterize of crystallite structure.

The development of the murine embryonic hematopoietic system occurs in spatially and temporally distinct waves, which it is described as three waves so far-primitive hematopoiesis, bipotential erythroid-myeloid progenitors (EMPs) generation and long-lived transplantable hematopoietic stem cells (HSCs) maturation from their precursors and differentiation toward all the adult lineages. The latest point is that HSC-independent hematopoietic lineages are produced in the primitive wave and definitive progenitor wave in the early mammalian embryo, such as primitive erythrocytes or EMPs. The HSC-dependent phase of hematopoietic development produces all the adult lineages derived from HSCs. In this review, the recent studies on the development of hematopoietic cells and HSCs in the yolk sac and aorta-gonad-mesonephron region (AGM) region at cellular and molecular level will be summarized to provide an integrated model of developmental hematopoiesis, although multiple hematopoietic sites are involved in embryonic hematopoiesis. It may offer new insights into the characteristics and its underlying mechanism of hematopoiesis at the early stage of embryogenesis.

Objective To investigate the effect of percutaneous vertebroplasty and kyphoplasty (PKP) on bone density and serum leptin in patients with osteoporotic thoracolumbar compression fractures. Methods One hundred and two patients with osteoporotic thoracolumbar vertebral compression fractures and 100 cases of healthy control were treated with PKP surgery. The serum leptin and adiponectin, and the bone mineral density of the lumbar spine were determined. Results patients Levels of the serum leptin and adiponectin in patients with osteoporotic thoracolumbar vertebral compression fracture were significantly higher than those with non osteoporotic fracture patients (P < 0.05). One month post-PVP, the levels of serum leptin and adiponectin in the two groups were significantly decreased (P < 0.05). postoperative group of The lumbar bone density at 1 month post-operation was is significantly higher than that before operation in each group (P < 0.05, respectively), with no significant difference between the two groups. The levels of serum leptin and adiponectin were negatively correlated with the bone mineral density (BMD) (P < 0.05). Conclusions tLevels of serum adiponectin and leptin were both increased in osteoporotic or non bone osteoporosis thoracolumbar vertebral compressor fractures. The percutaneous vertebroplasty forming operation could effectively reduce the serum level of leptin and adiponectin, and improve the bone mineral density of the lumbar vertebrae.

Objective To examine the short-and middle-term efficacy and refracture rate in patients with thoracolumbar fracture having percutaneous kyphoplasty (PKP) and determine their correlation with the severity of osteoporosis.Methods A retrospective analysis was conducted on 247 patients with thoracolumbar fracture undergone PKP from January 2008 to February 2014.Mean age of the patients (94 males and 153 females) was 63.2 years (range,50-81 years).Ground-level falls occurred in 119 patients,traffic injuries in 72 patients and high falls in 56 patients.The patients were assigned to osteopenia group and osteoporosis group based on the preoperative bone mineral density.Visual analogue score (VAS),Roland-Morris disability survey scale (RDQ),vertebral compression rate,kyphotic Cobb angle and refracture rate were recorded before and after operation.Efficacy in correlation with the severity of osteoporosis was evaluated.Results Mean duration of follow-up was 24.3 months (range,18-36 months).Three days after operation,VAS descended from (7.7 ± 2.1) points to (4.3 ± 1.1) points in osteopenia group and from (7.7 ± 2.0) points to (4.2 ± 1.5) points in osteoporosis group (P ＜ 0.05);RDQ descended from (21.2 ± 1.5) points to (10.4 ± 2.5) points in osteopenia group and from (20.8 ± 1.9) points to (11.2 ± 1.7) points in osteoporosis group (P ＜ 0.05);rate of vertebral body compression descended from (42.2 ± 10.5) ％ to (3.2 ± 0.5) ％ in osteopenia group and from (46.2 ± 12.7) ％ to (2.9 ± 0.8) ％ in osteoporosis group (P ＜ 0.05);kyphotic Cobb angle descended from (21.2 ± 9.5) ° to (7.2 ±2.4) °in osteopenia group and from (23.1 ± 8.9) ° to (7.1 ± 2.6) ° in osteoporosis group (P ＜ 0.05).Three years after operation,all the parameters remained better than these before operation,with the value higher in osteoporosis group than in osteopenia group (P ＜ 0.05).Rate of refracture was higher in osteoporosis group after operation,compared to that in osteopenia group (P ＜ 0.05).Conclusions The clinical short-term result is satisfactory,but refracture rate is increased with the osteoporosis aggravation.Targeting osteoporosis therapy is important to obtain a better mid-term results.