Objective To observe the protective effect of hydroxysafflor yellow A(HSYA) on anoxia/reoxygenation (A/R) injury of neonatal primary cardiomyocytes, and its relationship with phosphoinositide 3-kinase/protein ki-nase B/glycogen synthase kinase 3β(PI3K/Akt/GSK3β) signaling pathway. Methods Primary cardiomyocytes of neonatal rats were isolated from the rats and incubated for 48 hours. The cells were adhered to each other and then divided into five groups:control group (Con group), anoxia/reoxygenation group (A/R group),HSYA treatment group(A/R+H group),PI3K inhibitor (LY294002)treatment group(A/R+L group)and HSYA+LY294002 treat-ment group (A/R+H+L group),then to collect the supernatant fluid of each group to measure LDH.The flow cy-tometry was used to measure the apoptotic cells. The protein levels of Bcl-2,Bax,Akt,p-Akt (Ser473),GSK3β, p-GSK3β (Ser9) were evalated by Western blot. Results A/R increased LDH release,the apoptosis rate (P<0.001),and the expression of pro-apoptotic protein Bax (P <0.001) with the decrease of anti-apoptotic protein Bcl-2,p-Akt(Ser473), p-GSK3β(Ser9)(P<0.001) as compared with the control group. HSYA treatment de-creased LDH release,the apoptosis rate (P<0.001),and the expression of Bax (P<0.001) and increase the ex-pression of Bcl-2,p-Akt(Ser473),p-GSK3β(Ser9)(P<0.001). Compared with the A/R+H group,the expres-sion of Bax was increased (P<0.001),while the expression of Bcl-2, p-Akt(Ser473), p-GSK3β(Ser9)was de-creased (P<0.001) in the A/R+H+L group. Conclusions HSYA protects rats'cardiomyocytes from anoxia/reoxy-genation injury by regulating PI3K/Akt/GSK3β signaling pathway.

OBJECTIVETo explore the surgical methods and clinical evaluation of complex tibial plateau fractures resulted from high-energy injuries.

METHODSFrom March 2006 to May 2009,48 cases with complex tibial plateau fractures were treated with open reduction and plate fixation, including 37 males and 11 females, with an average age of 37 years (ranged from 18 to 63 years). According to Schatzker classification, 16 cases were type IV, 20 cases type V and 12 cases type VI. All patients were examined by X-ray flim and CT scan. The function of knee joint were evaluated according to postoperative follow-up X-ray and Knee Merchant Rating.

RESULTSForty-eight patients were followed up with a mean time of 14 months. According to Knee Merchant Rating, 24 cases got excellent results, 16 cases good, 6 cases fair and 2 cases poor.

CONCLUSIONAppropriate operation time, anatomical reduction, suitable bone graft and reasonable rehabilitation exercises can maximally recovery the function of knee joint.

Adolescent ; Adult ; Bone Nails ; Bone Plates ; Bone Screws ; Female ; Follow-Up Studies ; Fracture Fixation, Internal ; instrumentation ; methods ; Humans ; Internal Fixators ; Knee Joint ; surgery ; Male ; Middle Aged ; Tibial Fractures ; surgery ; Treatment Outcome ; Young Adult

Objective To explore the gene expression of interleukin-13 receptor (IL-13R)?2 and its relationship to proliferation activity of human gliomas.Methods The gene expression of IL-13R?in 50 hu- man gliomas,2 malignant human glioma cell lines and 6 normal brain tissues were studied by RT-PCR.Ki-67 labeling index (Ki267 LI) of all sample were detecteded by immunohistochemical staining.Results Only one normal brain tissues expressed very low IL-13R?2 mRNA,whereas 35 (70%) of 50 human brain tumors expressed 1L-13R?2 mRNA.The positive rate and expression level of IL-13R?2 mRNA were increased with the ascending of WHO tumor grade.(former:rs=0.87;letter:rs=0.69,P＜0.01).The difference of posi- tive rate and expression level of IL-13R 2?mRNA between the low grade and high grade tumors was statistical- ly significant,the proliferation activity of gliomas evaluated by Ki-67LI (Ki-67 Labeling Index,Ki-67LI) was positively correlated with IL-13R?2 gene expression and the tumor grade.Conclusion In human cerebral gliomas,IL-13R?2 genes may play an role in the malignant progression.The expression level of malignancy in molecular level and selecting the target of gene therapy.

The present investigation was undertaken in order to select the surface-sterilization technique most efficient for eliminating epiphytes, to document endophytes of healthy tissues from Glaycyrrhiza inflat Bat. in Xinjiang. Surface sterilization with 5% commercial solution of sodium hypochlorite for 5 minutes was reaffirmed as adequate for removing epiphytes on licorice roots. From the 151 segments incubated, 149 bacterial isolates and 2 fungal isolates were obtained. From all the isolates, Bacterial isolates were identified by VITEK-AMS. Part of Bacteria were identified in 13 different genus. Fungal species were characterized as Penicillium sp. and Fusarium sp.with microscope.

In this paper, the number of rhizosphere and non-rhizosphere microbial organisms of fusarium wilt resistant and susceptible watermelon under soil culture and soilless substrate culture was studied by traditional culture methods. The results showed that, the number of rhizoshpere microorganisms was significantly higher than non-rhizosphere, and the number was changed with the stage of watermelon grow, the number was the lowest in seedling stage and increased with the watermelon grow, and achieved highest at the flowering and fruiting stage, decreased with the watermelon ageing. The fusarium wilt resistant of watermelon was correspondence with number of rhizosphere bacteria; the number of rhizosphere bacteria of resistant watermelon was higher than that of susceptible watermelon in each stage under soil culture and soilless culture. The fusarium wilt resistant of watermelon is no correspondence with number of rhizosphere fungi and actinomycete. The number of non-rhizosphere microbial organisms was changed in a small range in the whole growing stage. The non-rhizosphere bacteria have no significant change in the whole stage under soil culture and increased quickly under soilless substrate culture and decreased at the later stage. The non-rhizosphere fungi and actinomycete reached highest at the later stage under soil culture or soilless sub-strate culture.

The traditional culture methods and the molecular biology methods were used to study the rhizosphere bacterial diversity between fusarium wilt resistant and susceptible watermelon. The results showed that the diversity and the equality of cultured rhizosphere bacteria of resistant watermelon were higher than those of the susceptible watermelon. The reason was that the cultured rhizosphere bacterial di- versity index H′ and 1/D of the resistant watermelon were higher than those of the susceptible watermelon and that the cultured rhizosphere bacterial equality index E of the resistant watermelon were higher than those of the susceptible watermelon. The dominant cultured bacterial genotypes were different between re- sistant and susceptible watermelon. The genotype 1 is the dominant genotype of resistant watermelon, con- sists 51.1%. The genotype 7 is the dominant genotype of susceptible watermelon, consists 58.7%.

Objective To explore the therapeutic effect of a new material--complex of shape-memory alloy brace and artificial dura (nitinol brace and NormalGEN) on reconstruction of frontal sinus and repair of cerebrospinal fluid leakage on dog models of lateral media skull base defect.Methods Seven adult healthy dogs were induced into models of frontal sinus defect and cerebrospinal fluid leakage; complex of nitinol brace and NormalGEN assisted by its corresponding apparatus was employed to reconstruct the defect and repair the leakage.The cranial profile,wound healing and leakage after operation were observed. Three months after the operation, cranial projections of X-ray,three-dimensional reconstruction of CT and 1.5T MRI were detected,and the histopathalogical outcome was noted. Results Seven dog models of frontal sinus defect and cerebrospinal fluid leakage were successfully established; 6 received reconstruction of frontal sinus and repair of cerebrospinal fluid leakage and survived without any complications as continuous leakage of cerebrospinal fluid,local tissue eminence and neurological function defect; 1 dead 5 d after the operation.The imaging detection showed that the nitinol brace was clear with satisfactory position without shift and artifact. Histopathalogical outcome showed that granulation tissue,which substituted NormalGEN,grew around the brace with a great quantity of fibroblast. Conclusion The complex of nitinol brace and NormalGEN assisted by its corresponding apparatus is suitable for reconstructing frontal sinus and repairing cerebrospinal fluid leakage in dog models.

AIMTo study the preparation of silymarin proliposomes. To study its physicochemic properties, its pharmacokinetical characteristics and bioavailability in rats after oral administration.

METHODSSilymarin proliposomes were prepared by film-deposition on carriers. When the proliposomes were contacted with water to form liposome suspensions, the tests of physicochemical properties including encapsulation efficiency, particle size and stability of the formed liposome suspensions were determined by HPLC, laser-particle-sizer and etc. The concentrations of non-conjugated and overall silymarin in plasma of rats and their pharmacokinetic behaviors after oral administration were studied by RP-HPLC. The pharmacokinetic parameters were computed by software program 3P97.

RESULTSThe encapsulation efficiency of silymarin liposomes could be more than 90%, with an average particle size of about 238.8 nm and a very good stability. The high bioavailability of silymarin proliposomes could be gotten by oral administration.

CONCLUSIONCompared with silymarin, silymarin proliposome is a stable and easily industrialized preparation and did enchance the gastrointestinal absorption of silymarin.

Administration, Oral ; Animals ; Area Under Curve ; Biological Availability ; Drug Carriers ; Drug Stability ; Liposomes ; Male ; Milk Thistle ; chemistry ; Particle Size ; Plants, Medicinal ; chemistry ; Rats ; Rats, Sprague-Dawley ; Silymarin ; administration & dosage ; blood ; chemistry ; pharmacokinetics ; Technology, Pharmaceutical ; methods

OBJECTIVETo set up a new grading system of intraventricular hemorrhage (IVH) and determine the value of predicting the probability of post-hemorrhagic hydrocephalus (PHH) in IVH.

METHODSWe first modified the Graeb criteria, then compared the value of prediction for PHH assessed by the Graeb criteria with the modified Graeb criteria. One hundred and thirty one IVH patients were divided into two groups: the upper group (n = 67) and the lower group (n = 64). Gold standard of PHH was assessed by CT scan or by out-drainage. The diagnostic parameters such as sensitivity (SE), specificity (SP) were analyzed. In the cutoff point of SE and SP curves, diagnostic efficiency (DE), and Kappa value (K) were analyzed. The probability of PHH was estimated by binary logistic regressions.

RESULTSIn all ventricular group, to Graeb criteria in the cutoff point, SE, SP, and K was 0.78, 0.84, and 0.60; and to modified Graeb criteria SE, SP, and K was 0.90, 0.84, and 0.74 respectively. The probability of PHH from point of 3-12 was 0.011, 0.032, 0.085, 0.212, 0.435, 0.689, 0.865, 0.949, 0.981, and 0.994 respectively according to modified Graeb criteria.

Aged ; Cerebral Hemorrhage ; complications ; diagnostic imaging ; Female ; Humans ; Hydrocephalus ; diagnosis ; diagnostic imaging ; etiology ; Logistic Models ; Male ; Middle Aged ; Sensitivity and Specificity ; Tomography, X-Ray Computed

Adolescent ; Bacteria ; isolation & purification ; Child ; Child, Preschool ; Humans ; Infant ; Infant, Newborn ; Respiratory Tract Infections ; microbiology