AIM To observe the alteration of the functions and hypermicro-instructure in lung of experimental aging mice and the effect of cistanche desertica polysacchrides on the alteration. METHODS To use the models of inhaling ozone (O 3) for 4 week,and two doses of cistanche desertica polysacchrides (50,100 mg?kg -1 ?d -1 ) were ig administrated to small and large dose group mice per day respectively(for 6 week).Then the behavioral and bio-chemical examinations of lung and blood was carried out,and the ultrastructures were observe by the transmission electronic microscopic. RESULTS Compared with aging models,cistanche desertica polysacchrides could significantly prolong the period of non-oxygen ( P

Objective:To study the effect of Huanglian-Jiedu Decoction on the white matter lesion of rats with focal cerebral ischemia and to explore the regulative role of the active fraction of Huanglian-Jiedu Decoction on NogoA/NgR. Methods:Male SD rats were randomly divided into sham operation group, model group, total alkaloid group, total flavonoid group, and total iridoid group. Except for the sham operation group, the rats in the other groups were used to establish the middle cerebral artery occlusion rat model by the suture method. 2 hours after modeling, rats in the total alkaloid group were given intragastric administration with 44 mg/kg total alkaloids; rats in the total flavonoid group were given intragastric administration 50 mg/kg total flavonoids; rats in the total iridoid group were given intragastric administration 80 mg/kg total iridoids, the sham operation group and the model group were intragastrically given equal volume of normal saline, once a day, for 7 consecutive days. The pathological changes of rat white matter were observed by HE staining, the pathological changes of rat myelin sheath were observed by Luxol fast blue (LFB) staining, and the expression of Amyloid precursor protein (APP), NogoA, and NgR in the internal and external capsule areas of the brain was detected by immunohistochemical staining. Real-time fluorescence quantitative PCR was used to detect the expression of NogoA and NgR in the tissues surrounding the ischemic infarct.Results:Compared with the model group, the total alkaloid group, total flavonoid group, and total iridoid group had lower pathological damage scores in the internal and external capsule areas of rats ( P<0.05 or P<0.01), increased integral optical density value of LFB staining ( P<0.01), decreased expression of APP and NogoA; the expression of NgR in the internal and external capsules of rats in the total alkaloid group and the total iridoid group decreased ( P<0.05 or P<0.01), and the expression of NgR in the inner capsule of rats in the total flavonoid group decreased ( P<0.01); the expression of NogoA (1.20 ± 0.17, 1.55 ± 0.30, 1.19 ± 0.38 vs. 2.22 ± 0.58) and NgR (1.98 ± 0.55, 1.48 ± 0.31, 1.58 ± 0.27 vs. 3.36 ± 0.41) genes in the tissues around the infarct focus of rats in the total alkaloid group, total flavonoid group and total iridoid group decreased ( P<0.01). Conclusion:The present study investigates the therapeutic effects of Huanglian-Jiedu Decoction, promoting white matter repair by decreasing the overexpression of NogoA and NgR in an experimental animal model of stroke.

AIM: To determine whether hydroxyapatite modified titanium promotes superior adhension and proliferation of rabbit corneal fibroblast in comparison with pure titanium.METHODS: We used bioactive hydroxyapatite to modify titanium surfaces. Fourth passage fibroblasts of rabbit cornea were seeded on hydroxyapatite modified titanium surfaces, pure titanium and glass surfaces. Cell adhension, proliferation and morphology were detected at 24 hours, 48 hours, and 72hours using a acridine orange stain. Further studies of cell morphology were performed using scanning electron microscopy.RESULT: Ceil counts were significantly greater on hydroxyapatite modified titanium surfaces at each time point(P＜0.05).At 24 hours, cell spreading was greater on hydroxyapatite-coated titanium and glass than on the pure titanium. At 72 hours, compared with pure titanium and glass surfaces, the cells on hydroxyapatite modified titanium surfaces had greater spreading area and longer stress fibers.CONCLUSIONS: Hydroxyapatite modified titanium promotes superior adhension and proliferation of rabbit corneal fibroblast in comparison with pure titanium.

Objective To explore role of 64-slices spiral CT in differetiation of acute chest pains.Methods Thirty six patients with acute chest pains were performed 64-slices spiral CT chest angiography.Two-dimensional and three-dimensional reconstruction was performed in all patients by means of multiplanar reconstruction(MPR)(coronal,sgittal oblique),curved planar reformation(CPR), maximum intensity projection(MIP),and volume rendering(VR).All images were blindly reading by two experienced radiologist.DSA were performed at the same time in 16 cases.Results The coronary artery branches,pulmonary artery and aortic artery in all patients were showed clearly,The acute myocardial infarction were showed in 10 cases,The pulmonary artery embolism in 14 cases,The aortic dissection in 6 cases respectively,The Coronary embolism in One case ,pneumothorax In One case The constrictive pericarditis in 1 case respectively.Normal findings in 4 cases.Conclusion 64-slices spiral CT is a useful and noninvasive examination in acute chest pain.

Important forensic diagnostic indicators of sudden death in coronary atherosclerotic heart dis-ease,such as acute or chronic myocardial ischemic changes,sometimes make it difficult to locate the ischemic site due to the short death process,the lack of tissue reaction time.In some cases,the de-ceased died of sudden death on the first-episode,resulting in difficulty for medical examiners to make an accurate diagnosis.However,clinical studies on coronary instability plaque revealed the key role of coronary spasm and thrombosis caused by their lesions in sudden coronary death process.This paper mainly summarizes the pathological characteristics of unstable coronary plaque based on clinical medi-cal research,including plaque rupture,plaque erosion and calcified nodules,as well as the influencing factors leading to plaque instability,and briefly describes the research progress and technique of the atherosclerotic plaques,in order to improve the study on the mechanism of sudden coronary death and improve the accuracy of the forensic diagnosis of sudden coronary death by diagnosing different patho-logic states of coronary atherosclerotic plaques.

OBJECTIVETo evaluate the effect of elevated basal follicle-stimulating hormone (FSH) on both the quantity and quality of oocytes and embryos and the clinical outcomes of pregnancy in women under 35 years of age.

METHODSA retrospective analysis was conducted for inspecting 294 in vitro fertilization-embryo transfer (IVF-ET) cycles in women under 35 years of age. According to the basal FSH levels, the women were divided into groups A, B, and C with basal FSH of 10-14.99, 15-19.99 and ≥20 IU/L, respectively, to compare the average number of oocytes retrieved, morphologies of the oocytes and embryos, and clinical outcomes of pregnancy.

RESULTSGroup A showed greater average numbers of oocytes collected, total embryos and good-quality embryos with a lower gonadotrophin dose required to achieve follicular maturity than groups B and C. The 3 groups showed no significant differences in the percentage of metaphase II oocytes, optimal embryos-blastomere number, normal fertilization rate, cleavage rate, good-quality embryo rate, implantation rate, pregnancy rates, live birth rate or miscarriage rate, but the pregnancy rates and live birth rate tended to decrease in women with basal FSH ≥15 U/L.

CONCLUSIONIn women below 35 years of age, an elevated serum FSH (especially one ≥15 U/L) indicates diminished ovarian reserve and reduced numbers of oocyte and embryo but not poor oocyte or embryos quality, and good clinical pregnancy rate can still be expected.

Adult ; Embryo Transfer ; Female ; Fertilization in Vitro ; Follicle Stimulating Hormone ; blood ; Humans ; Infertility, Female ; blood ; therapy ; Pregnancy ; Pregnancy Outcome ; Pregnancy Rate ; Retrospective Studies ; Young Adult

OBJECTIVETo study the value of basal antral follicle count (AFC) and age in predicting ovarian response and clinical outcome of in vitro fertilization-embryo transfer (IVF-ET).

METHODSA total of 1319 oocyte retrieval cycles in women with an AFC&le;10 and complete IVF/ICSI cycles were analyzed retrospectively. According to the AFC, the patients were divided into groups A, B, and C with AFC&le;4, of 5-7, and of 8-10, respectively, and each was further divided into <38 years old group and ≥38 years old group. The oocytes retrieved, ovarian response, implantation rate, cancellations, pregnancy, pregnancy loss, and live births were evaluated.

RESULTSAs the AFC increased, the total gonadotrophin (Gn) dose increased and the follicles aspirated and oocytes retrieved decreased significantly (P<0.001). Patients below 38 years of age had a lower total Gn dose and more follicles aspirated and oocytes retrieved than older patients. An AFC>7 and age≥38 years was associated with significantly lower total Gn dose, greater number of follicles aspirated and oocytes retrieved, and lower pregnancy rate than an AFC&le;7 and age<38 years (P<0.05). Bivariate correlation and linear regression analysis identified AFC as the best single predictor of ovarian response in IVF. The pregnancy rate differed significantly between the 3 groups, and older patients (≥38 years) had higher early miscarriage rate.

CONCLUSIONAntral follicle count&le;7 or age≥38 years old with AFC&le;10 is the suitable threshold of diminished ovarian reserve in controlled ovarian stimulation for infertile women. Combination of AFC and age is the best predictor of ovarian response in IVF. Age has a better predictive value of pregnancy rate than AFC. AFC influences mainly the oocytes quantity, while age also affects oocyte quality.

Adult ; Age Factors ; Embryo Transfer ; Female ; Fertilization in Vitro ; Humans ; Ovarian Follicle ; anatomy & histology ; cytology ; physiology ; Ovulation Induction ; Pregnancy ; Pregnancy Outcome ; Retrospective Studies

Infectious bursal disease virus(IBD) causes infectious bursal disease (IBD), which infects bursal of chicken and can evoke immune suppression. This study identified the antigenic epitopes of four McAbs to IBDV VP3(HRB-3F, HRB-7B, HRB-7C and HRB-10E)with pepscan. A set of 17 partially overlapping or consecutive peptides (P1-P17) spanning VP3 were expressed for epitope screening by pepscan. Finally, two antigenic epitopes, 109-119aa and 177-190aa of IBDV VP3, were identified by Western blot and ELISA. The peptides on epitopes could react with IBDV, and they had better immunnogenicity. The sequences of epitopes were compared with that of several other IBDV strains in the same region, and was found they were totally homologous. This study showed the two epitopes were novel conserved linear B cell epitopes on the VP3 of IBDV. This study provides basis for the development of immunity-based prophylactic, therapeutic and diagnostic measures for control of IBD and further for structural and functional analysis of IBDV.
Animals ; Antibodies, Monoclonal ; immunology ; Antibodies, Viral ; blood ; immunology ; Blotting, Western ; Capsid Proteins ; genetics ; immunology ; metabolism ; Enzyme-Linked Immunosorbent Assay ; Epitopes ; genetics ; immunology ; metabolism ; Immune Sera ; immunology ; Immunization ; Immunohistochemistry ; Infectious bursal disease virus ; genetics ; immunology ; metabolism ; Mice ; Mice, Inbred BALB C

Objective To investigate the effects of F protein of hepatitis C virus subtype lb on the apoptosis of human hepatocellular carcinom HepG2 cells. Methods HepG2 cells were transfected with recombinant plasmid pcDNA3.0-F-EGFP and pcDNA3.0-F-EGFP-HepG2 strain was exposed to Act-D and tumor necrosis factor a (TNFα) treatment in order to induce cell apoptosis with positive control pcDNA3.0-C-EGFP-HepG2, negative control pcDNA3.0-C-EGFP-HepG2 and blank control HepG2.Annexin V-FITC/PI of flow cytometry was performed to determine the number of apoptotic cells. DNA Ladder was used to observe the isolation of apoptotic DNA fragments in the apoptotie cells. Results pcDNA3.0-F-EGFP- HepG2 cell strain showed a much delayed apoptosis as well as obviously lowering the apoptotic rate when compared with the pcDNA3.0-HepG2 strain and HepG2 strain (P<0.001).Conclusion The introduction and expression of extraneous gene (the F gene of hepatitis C virus subtype 1b) could significantly inhibit the apoptosis of HepG2 cells.

OBJECTIVETo investigate the clinical manifestations, imaging characteristics as well as prognosis of neonatal polycythemia complicated with brain damage.

METHODSOne hundred and sixteen in-patients with neonatal polycythemia admitted to our hospital during January 2003 to October 2005 were analyzed. Their clinical manifestations were observed. Craniocerebral ultrasonic examination (2D, 3D), CT and MRI were employed to dynamically observe the craniocerebral imaging variances as well as the cerebral hemodynamic variations and near infrared spectroscopy (NIR) was adopted to test the cerebral oxygenation. Twenty-two cases with moderate or severe disease were followed up for 3 to 12 months.

RESULTSOut of the 116 polycythemic neonates, 53 cases had brain damages, of whom 31 had mild, 14 had moderate, and 8 had severe damages. Cranial imaging alterations were mostly ischemic injuries of various areas of different severity. The severity of brain damage was closely related to the duration of polycythemia, oxygen saturation of cerebral tissues as well as cerebral hemodynamic abnormalities. Brain injury was likely to occur in those whose polycythemia persisted for more than three days. The regional saturation of oxygen (rSO(2)) in mild brain injury cases was found to be 52.1%, while it was 47.1% in moderate and severe brain injury cases. Compared to the 58% as found in non-brain injury cases, the variance was found to be statistically significant (F = 104.466, P < 0.01). Among the cases with brain injury, cerebral hemodynamics displayed a slowdown in the blood flow velocity in the cerebral anterior artery and medium artery during the systolic phase and/or the diastolic phase. The abnormality ratio was closely related to the severity of brain injury. Through the chi(2) test the variance was proved to be statistically highly significant (chi(2) = 18.889, P < 0.01), however it was not correlated with the increase of the initial levels of hemoglobin (Hb) and hematocrit (HCT) (P > 0.05). During the follow up, neurological developmental abnormalities of various severity were found to exist in the cases with moderate (5/12) and severe disease (7/8), while cerebral palsy or epilepsy was not yet found.

CONCLUSIONNeonatal polycythemia might tend to bring about a reduction in the perfusion of cerebral blood flow and damaged cerebral oxygenation metabolism which in turn might lead to cerebral ischemic injury, which in some of the moderate and severe cases might lead to long-term neurological complications. Imaging investigations especially craniocerebral ultrasonic examination could be the practical means for the early diagnosis and evaluation of prognosis.

Brain ; pathology ; Brain Damage, Chronic ; complications ; Cerebrovascular Circulation ; Female ; Humans ; Infant, Newborn ; Infant, Newborn, Diseases ; Magnetic Resonance Imaging ; Male ; Polycythemia ; complications ; Skull ; diagnostic imaging ; Tomography Scanners, X-Ray Computed ; Ultrasonography