Objective To observe temporal expression of matrix metalloproteinases(MMP-13) and tissue inhibitor of metalloproteina-ses-1 (TIMP-1) in lung of newborn rats with hyperoxia induced chronic lung disease (CLD),and to explore the relationship of CLD with MMPs.Methods The neonatal rats within 24 hours after birth were randomly divided into hyperoxia-exposed group(n=40) and control group(n=40).On postnatal 1,3,7,14 and 21 days,lung tissue of rats in 2 groups were collected.Lung histological changes were evaluated by hematoxylin and eosin and Masson stain;Collagen Ⅰ was detected by enzyme linked immunoadsorbent assay;MMP-13 and TIMP-1 were identifide by immunohistochemistry.Results Exposured to hyperoxia enviroment for 21 days,the number of alveolar decreased,terminal air space enlarged,inter-alveolar septa thickened,and deposition of interstitial collagen fibers.On 14 and 21 days,collagen Ⅰ in the lung of hyperoxia-exposed group increased significantly compared with that of control group(P0.05),obviously decreased on 21 day(P

To investigate the effects of substance P in globus pallidus on haloperidol-induced Parkinson's disease model rat.Methods In behavioral experiments,guide cannulae constructed from stainless steel were implanted into the globus pallidus.After five days recovery,0.5 μl drugs(normal saline,SMSP,SR140333B,SR140333B + SMSP)were bilaterally microinjected into the globus pallidus in awake rats with haloperidol administration intraperitoneally.The catalepsy was then observed within 60 min.In electrophysiological study,an in vivo extracellular recording was performed to observe the effects of substance P on the firing rate of pallidal neurons.Resuits Haloperidol induced catalepsy in rats with intrapallidal saline microinjection.The maximum average latency was(259.8±34.8)s at the time point of 30th min.The minimum average latency was(145.2±54.8)s at 50th min.Bilateral microinjection of SMSP into globus pallidus significantly attenuated haloperidol-induced catalepsy (The average latency was(10.4±3.4)s at lOth rain and(58.4±38.8)s at 60th min,P＜0.01).This anticataleptic effect was completely counteracted by selective NK-1 receptors antagonist SR140333B(The average latency was(176.4±64.4)s at 10th min and(139.2±59.7)s at 60th rain,P＜0.01).Furthermore,micropressure ejection of SMSP significantly increased the firing rate of pallidal neurons(Basal:(13.4±4.2)Hz,SMSP:(17.5±5.6)Hz).The average increase was(29.4±8.6)%(P＜0.05,n=13).SR140333 B completely blocked SMSPinduced increase in firing rate(SR140333B:(10.3±2.5)Hz,SR140333 B + SMSP:(11.3±3.0)Hz,P＞0.05,n=8).Conclusion Based on the action of substance P in globus pallidus of parkinsonian rats,it is we hypothesized that activation of substance P receptor in globus pallidus may play a role in the treatment of Parkinson's disease.

Antineoplastic Agents ; pharmacology ; Cell Cycle ; Cell Line, Tumor ; drug effects ; Cell Proliferation ; Granulocyte Colony-Stimulating Factor ; pharmacology ; Humans ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; metabolism ; pathology

Objective To investigate the effect of down regulation of SURVIVIN on cell and subsequent apoptosis in cervical cancer cells HeLa.Methods(1)The U6 promoter was obtained by PCR from liver of mouse and ligated into TA vector.RNAi vector(psSURVIVIN) and psN(control vector) containing of the U6 promoter was established.(2)Using HeLa cells as a model system,two groups were set stably up transfected with RNAi control plamid and psSURVIVIN(SURVIVIN RNAi plasmid),respectively.The expression of SURVIVIN in HeLa cells was measured by Western blot and immunofluorescence methods.(3)The activity of caspase 3/7 was detected using caspase-Glo(tm) 3/7 assay reagent.Results(1)Cell apoptotic rate was significantly increased by transfection with RNAi targeting plasmid,and cell was arrested at G0/G1(P

Chronic obstructive pulmonary disease (COPD) is a chronic airway diseases,which leads to heavy social and economic burden to our country.We can use serum biomarkers to evaluate diagnosis,classification,treatment and prognosis of COPD.The change of biomarkers provides lots of valuable clinical information.A variety of biomarkers are associated with the severity of lung function,which can be used to judge disease severity.Some indicators are related to the diagnosis of acute exacerbation or hospitalization risk.Some serum markers would guide therapy and can be effectively applied to clinical work.Study of COPD serum biomarkers would provide more reference information for clinical physicians in diagnosis,treatment and prognosis of COPD.

Objective To investigate the effect of comprehensive intervention therapy of losing weight on leptin and blood lipid,blood glucose,insulin in adolescent girl students with simple obesity.Methods Simple obesity adolescent girl students were accepted the losing weight therapy composed of the aerobic exercise,reasonable diet,behavior modification and medical supervision for 10 months.Then the changes of blood leptin and correlated hormone were examined before test,during test and after test,respectively.Results The leptin and correlated hormone levels were significantly higher in obesity subjects than that in normal subjects,and the levels of serum leptin was positively correlated with BMI and insulin.The blood leptin and blood lipid,blood glucose,insulin were decreased obviously after experimental losing weight.Conclusion Comprehensive intervention therapy of losing weight can significantly lose weight,leptin and insulin,so it plays an important role in modifying the metabolism disorder

Adolescent ; Blood Vessels ; pathology ; Female ; Femur Head ; blood supply ; pathology ; Femur Head Necrosis ; pathology ; Humans ; Male

Adult ; Factor XIII ; antagonists & inhibitors ; Factor XIII Deficiency ; complications ; etiology ; Female ; Humans ; Sjogren's Syndrome ; complications

Vascular endothelial growth factor (VEGF) is an endothelial cell-specific mitogen.Studies have shown that VEGF is closely associated with ischemic stroke,and this makes it possible to intervene in ischemic stroke from the level of VEGF and its receptor.This article reviews the biological effect of VEGF and its receptor,mechanism of action involving in various stages of ischemic stroke,and the therapeutic prospect in ischemic stroke.

Objective To explore the clinical manifestations and the deletion mutation in NEMO gene in incontinentia pigmenti. Methods The clinical manifestations of one neonatal infant were analyzed. By long PCR ampliifcation, the deletion mutations in NEMO gene and pseudogene ΔNEMO were detected. Results The clinical manifestations were typical skin lesions. Histopathological examination showed focal edema sponge and gathered or scattered eosinophilic granulocytes. The deletion of exons 4-10 in both NEMO andΔNEMO genes were detected in the patient. Conclusions Incontinentia pigmenti is a rare X chromosome linked dominant genetic disease. It has typical clinical manifestations and pathological changes, and deletion mutation in NEMO gene.