Objective To investigate the techniques and influence factors for the respiratory navigator echo triggered whole-heart coronary MR angiography(WH-CMRA)and evaluate its application in visualizing coronary arteries and the image quality.Methods Ninety two volunteers were acquired with WH-CMRA at 3 T MR scanner using respiratory navigator-echo gated TFE sequence.Imaging quality was visually graded as 0—Ⅳ grade according to the visual inspection,average length,diameter and sharpness of coronary arteries.The correlation between the imaging quality and respiratory pattern,heart rate and navigator efficiency was analyzed.Results The imaging quality in 92 cases was that 28 were graded as Ⅳ, 53 were graded as Ⅲ,9 were graded as Ⅱ and 2 were graded as Ⅰ.The successful rate of scan was 88% (81/92).The imaging quality is mainly graded as Ⅳ when the heart rate was less than 75 beats per minute (bpm)and the sharpness of vessel was(48?11)%.When heart rate was more than 75 bpm,the image quality was mostly graded as Ⅲ and the sharpness was(33?15)%.The correlation between heart rate and imaging quality score was negative(r=-0.726,P0.05).Conclusion 3 T WH-CMRA technique could facilitated the visualization of whole coronary arteries at free breathing but having indications on heart rate.

Objective To explore the relationship of the ratio of plasma adrenomedullin(AM)and endothelin-1(ET-1)with serum concentration of neuron-specific enolase(NSE)in full-term neonates with hypoxic-ischemic encephalopathy(HIE).Methods Plasma concentrations of AM,ET-1 and serum NSE from 32 full-term neonates with HIE were detected by radioimmunoassay(RIA)on the 1,3 and 7 d after parturition,30 neonates in the corresponding periods in our hospital were employed as controls.The infants with HIE were divided into mild,moderate or severe group in terms of diagnostic standard of HIE.Results 1.Plasma concentrations of AM and ET-1 in newborns with mild,moderate or severe HIE were significantly higher than that of control group at 1 d after life with a decline from 3-7 d(Pa

OBJECTIVETo establish fluorescent quantitative PCR method for detecting human herpes virus type 6 (HHV6).

METHODSAccording to the specific sequence of human herpes virus type 6 genes, the primers and the fluorescent probe (TaqMan) were designed and synthesized. The fragment generated from HHV 6 gene as template was cloned into the pMD18-T vector which was constructed from the pUC 18. And the positive recombinant plasmid was 1:10 diluted and used as standard quantitative template to make the standard curve for sample detection.

RESULTSThe standard curve indicated the linear relationship between Ct (cycle threshold) and template concentration. The clinical samples from 135 cases were detected by this system, 16 cases among 135 were positive.

CONCLUSIONThe fluorescent quantitative PCR method for the detection of human herpes virus type 6 is simple and accurate, and this method may be helpful to clinical diagnosis.

Adolescent ; Adult ; Aged ; Child ; Child, Preschool ; DNA Primers ; DNA Probes ; DNA, Viral ; genetics ; Female ; Herpesvirus 6, Human ; genetics ; Humans ; Male ; Middle Aged ; Polymerase Chain Reaction ; methods ; Purpura, Thrombocytopenic, Idiopathic ; diagnosis ; virology ; Reproducibility of Results ; Roseolovirus Infections ; diagnosis ; virology ; Sensitivity and Specificity ; Young Adult

OBJECTIVETo probe into a treatment method for increasing clinical therapeutic effect on xerophthalmia.

METHODSForty-five cases were randomly divided into acupuncture group 1, acupuncture group 2 and control group. The acupuncture group 1 were treated with acupuncture based on syndrome types, and the acupuncture group 2 with acupuncture at local acupoints, and the control group with dripping of artificial tears. Local symptoms of eyes, S1T, BUT and FL were observed before and after treatment.

RESULTSS1T and BUT increased after treatment in the two groups (P < 0.01, P < 0.05), but did not significantly change in the control group (P > 0.05). There were significant differences in change of FL as the control group compared with the acupuncture group 1 and 2. The total effective rate was 86.7%, 66.7% and 33.3% in the acupuncture group 1, 2 and the control group, respectively.

CONCLUSIONThe integral syndrome differentiation acupuncture can improve secretion of tear, increase stability of tear film, improve local symptoms of eyes with a therapeutic effect better than acupuncture at local acupoints and artificial tears.

Acupuncture Points ; Acupuncture Therapy ; Humans ; Syndrome ; Tears ; secretion ; Xerophthalmia ; therapy

Objective To study the feasibility and clinical values of diffusion tensor tractography (DTT)in the spinal cord at 3.0 T MR.Methods Forty patients with spinal cord compression including cervical cord herniation and cervical spondylosis(30 cases),tumors in spinal canal(9 cases)and old injury in cervical vertebrae(1 cases)and 20 healthy volunteers participated in this study.Single-shot spin- echo echo-planar diffusion tensor sequence for tractography of the spinal cord was performed.The fibers of spinal cord were visualized by using fiber tracking software.Results On the DTT maps,the normal spinal cord was depicted as a fiber tract showing color-encoded cephaloeaudally,which indicated anisotropy in the cephalocaudal direction.By setting two ROI,the main spinal cord fiber tracts,such as corticospinal or spinothalamic tract,were visualized.The tracts from two sides of the brain did not completely cross.It was asymmetric in the number of tracts on the two sides in most normal subjects(8/10).The tracts of all patients with cord compression were seen oppressed or damaged in different degrees.The DrrT in patients with cervical spondylosis and extramedullary-intradural neurolemmoma demonstrated that tracts were oppressed but not damaged.The DTT in one ependymoma showed that tract was markedly compressed and slightly damaged.Conclusion DTT is a promising tool for demonstrating the spinal cord tracts and abnormalities,can provide useful information for the localization of compression and evaluation of the impairment extent on the white matter tracts of the spinal cord.

In order to prove the feasibility of preparation of the drug-incorporated stent by immersing stent wires in the monoclonal antibody (mAb) solution, fluorescence stain and image analysis were used to evaluate the L-PLA-coated stent. Absorption was measured using a radioisotope technique after preparing the mAb-incorporated stent, and the absorption curve was determined from the absorption data. In an in vitro perfusion circuit, the antibody was eluted from the stent matrices, and the related influence factors were evaluated based on the release data.
Absorption ; Alloys ; chemistry ; Antibodies, Monoclonal ; chemistry ; immunology ; Drug-Eluting Stents ; Graft Occlusion, Vascular ; immunology ; prevention & control ; Humans ; Lactic Acid ; chemistry ; Platelet Aggregation Inhibitors ; chemistry ; immunology ; Platelet Glycoprotein GPIIb-IIIa Complex ; immunology ; Polymers ; analysis ; chemistry ; Time Factors

Objective To study the changes in red blood cells(RBCs),hemoglobin(Hb),hematocrit(HCT),mean corpuscular volume(MCV),RBC distribution width variation coefficient(RDW-CV)and RBC distribution width standard deviation(RDW-SD)of leukocyte-poor red blood cells preserved in navy ship force on a long voyage.Methods According to the Requirement of Health Examination for Blood Donors(GB 18467 -2011),red blood cells in additive solution leukocytes reduced were randomly collected from ten healthy voluntary blood donors one day before sailing.Each blood sample was preserved.The relevant parameters were detected as data before sailing.Each blood sample was divided into two parts,one in test group and the other in control group.Samples were taken from the two groups of leukocyte-poor red blood cells for the sampling detection after 21 days of sailing respectively.Results ①After sailing, the concentrations of RBCs and Hb declined in both groups,and the difference of RBC concentrations was not significant(P=0.319),but that of the concentrations of Hb was significant(P=0.002).②After sailing, the concentrations of HCT and MCV increased, but the change of HCT was significant(P=0.015),while that of MCV was insignificant(P=0.051).③After sailing,the concentrations of RDW-SD and RDW-CV were higher,but the change of RDW-SD was significant(P<0.001),while that of RDW-CV was not(P=0.528).Conclusion When leukocyte-poor red blood cells are preserved in navy ship force,the concentrations of RBC and Hb decrease,while the concentrations of HCT,MCV,RDW-SD and RDW-CV increase with the prolongation of preservation.A long voyage has some impact on the parameters of red blood cells in additive solution leukocytes reduced,as is the case with the conventional blood storage refrigerator(4 ±2)℃.

Objective To explore the influence on and changes in the biochemical indices of red blood cells(RBCs)in additive solution leukocytes reduced preserved in navy ship force on a long voyage.Methods According to the Requirement of Health Examination for Blood Donors(GB 18467 -2011),RBCs in additive solution leukocytes reduced were prepared from 10 healthy voluntary blood donators one day before sailing.Each blood sample was divided into two parts,one in test group and another in control group.All the groups had samples taken for the biochemical index detection after 1,3,5,7,14 and 21 days of sailing respectively.Results ①The change in total protein(P=0.235)and albumin (P=0.119)concentration was not obvious,and the difference between the two groups was not significant.②The change in total creatinine(P=0.001)and uric acid(P=0.001)concentration was obvious, but the difference between the two groups was not significant.③The change in total cholesterol(P=0.354)concentration was not obvious,but the change in triglycerides(P=0.005)concentration was significant.The difference between the two groups was not significant.④The concentration of lactate dehydrogenase, hydroxybutyrate dehydrogenase and creatine kinase increased with the time of preservation(P<0.001).The difference between the two groups was not significant.⑤The interaction between grouping effect and time effect had no significant influence on the concentration of osmolarity(OSM)(P=0.968)and glucose(Glu) (P=0.406).Between the two groups,the difference of concentrations of OSM(P=0.569)and Glu(P=0.115)was not significant.Conclusion Under the 4 class sea conditions, a long voyage has some impact on the storage of RBCs in additive solution leukocytes reduced,as in the conventional blood storage refrigerator(4 ±2)℃.The results of this study have important clinical implications for our further study of marine blood support.

OBJECTIVEThe aim of this study was to prepare Pingyangmycin Albumin Microspheres (PYM-AMS) for arteriovenous malformations treatment.

METHODSPYM-AMS was prepared at 140 degrees C by the method of emulsification-heat solidification and its characteristics were evaluated, such as morphosis, particle size, drug loading (DL%), encapsulation efficiency (EE%), stability and drug sustained-releasing in vitro. After being packaged, PYM-AMS were sterilized with 13.7 kGy of 60Co. Small samples of PYM-AMS were packaged in small bottles and stored at 3 - 5 degrees C, 15 - 25 degrees C, 37 degrees C for 3 months, then checked the change of morphology, DL, EE and the release rate.

RESULTSThe surface of particles was smooth and integrated. The average diameter of PYM-AMS particles was 139.422 microm and 80% was in the range of 56 - 251 microm. The mean DL% and EE% were 26.47% and 84.3%, respectively. PYM released fast in 5 h, but then released slowly. 88.65% drugs were released in 24 h, and t50 was 1.5 h. There was no obvious change of the morphology, DL,EE and the release rate of PYM-AMS stored at 3 - 5 degrees C 15 - 25 degrees C, 37 degrees C for 3 months.

CONCLUSIONPYM-AMS prepared in this study had sustained-release effect, high drug loading and high stability. Albumin is a good carrier of PYM embolization agent.

Albumins ; Bleomycin ; analogs & derivatives ; Delayed-Action Preparations ; Microspheres ; Particle Size

Ischaemic stroke is a common condition leading to human disability and death. Previous studies have shown that oleanolic acid (OA) ameliorates oxidative injury and cerebral ischaemic damage, and miR-186-5p is verified to be elevated in serum from ischaemic stroke patients. Herein, we investigated whether OA regulates miR-186-5p expression to control neuroglobin (Ngb) levels, thereby inhibiting neuronal pyroptosis in ischaemic stroke. Three concentrations of OA (0.5, 2, or 8 μM) were added to primary hippocampal neurons subjected to oxygen–glucose deprivation/ reperfusion (OGD/R), a cell model of ischaemic stroke. We found that OA treatment markedly inhibited pyroptosis. qRT–PCR and western blot revealed that OA suppressed the expression of pyroptosis-associated genes. Furthermore, OA inhibited LDH and proinflammatory cytokine release. In addition, miR-186-5p was downregulated while Ngb was upregulated in OA-treated OGD/R neurons. MiR-186-5p knockdown repressed OGD/R-induced pyroptosis and suppressed LDH and inflammatory cytokine release. In addition, a dual luciferase reporter assay confirmed that miR-186-5p directly targeted Ngb. OA reduced miR-186-5p to regulate Ngb levels, thereby inhibiting pyroptosis in both OGD/R-treated neurons and MCAO mice. In conclusion, OA alleviates pyroptosis in vivo and in vitro by downregulating miR-186-5p and upregulating Ngb expression, which provides a novel theoretical basis illustrating that OA can be considered a drug for ischaemic stroke.