The problems in traditional imaging film and its reporting process were described.A virtual printing server network and a self-service printing service model of image film and its reporting model,established by improving the traditional imaging film and reporting process,could shorten the waiting time of patients after examinations,reduce the errors in imaging film reports,and improve the working efficiency of staff.

Polymeric micelles have exhibited attractive properties as drug carriers, such as high stability in vivo and good biocompatibility, and been successfully used to dissolve various drugs of poor aqueous solubilities. In this study, we developed a new type of polymeric micelles with mannose-mediated targeting and pH-responsive drug release properties for anticancer drug delivery. The polymeric micelles were prepared from an amphiphilic polymer, poly (glycidyl methacrylate)-g-mannose (PGMA-Mannose). An anticancer drug, doxorubicin (DOX), was encapsulated into the micelles during the micellization, and could be released rapidly under acidic condition. The specificity of cellular uptake of the micelles by two different cell lines was studied using confocal laser scanning microscopy and the MTT assay. DOX-loaded micelles were efficiently trapped by mannose-receptor-overexpressing cancer cells MDA-MB-231, whereas mannose- receptor-poor cells HEK293 showed much lower endocytosis towards the micelles under the same conditions. Thus, DOX-loaded micelles displayed higher cytotoxicity to MDA-MB-231 cancer cells as compared with free DOX. The present study demonstrates that PGMA-Mannose micelles are a promising targeted drug delivery system for cancer therapy.
Cell Line, Tumor ; Doxorubicin ; pharmacology ; Drug Delivery Systems ; HEK293 Cells ; Humans ; Lectins, C-Type ; metabolism ; Mannose ; chemistry ; Mannose-Binding Lectins ; metabolism ; Micelles ; Receptors, Cell Surface ; metabolism

OBJECTIVETo observe the characteristics of sperm single-stranded DNA breaks (SSB) and double-stranded DNA breaks (DSB) in infertile men, explore the association of DSB with male infertility, and provide a new observation index and idea for the diagnosis and treatment of the disease.

METHODSThis study involved 60 infertile men (infertility group) and 30 normal healthy males with infertile wives (control group). We comparatively analyzed the seminal parameters of the two groups, determined sperm concentration and viability using the computer aided sperm analysis system, measured the sperm survival rate by hypoosmotic swelling (HOS) test, examined sperm morphology by Diff-Quick staining, and detected sperm DNA damage by two-tail comet assay.

RESULTSNine two-tail comet models were established for detecting sperm DNA integrity. Comparisons between the fertility and control groups showed that the sperm DNA fragmentation index (DFI) was (33.8 ± 13.1) vs (16.3 ± 7.9)% (P < 0.01), the SSB-DFI was (19.2 ± 11.4) vs (14.9 ± 7.6)% (P > 0.05), the SSB-DFI/DFI was (56.8 ± 32.4) vs (91.4 ± 27.8)% (P < 0.01), the DSB-DFI was (23.9 +13.4) vs (6.1 ± 2.7)% (P < 0.01), and the DSB-DFI/DFI was (70.8 ± 19.5) vs (37.4 ± 11.3)% (P < 0.01). The optimal cut-off value of DSB-DFI/DFI in the diagnosis of male infertility was 39.5%, with the AUG, sensitivity, and specificity of 0.969, 98.3%, and 90%; that of DSB-DFI was 15.85%, with the AUC, sensitivity, and specificity of 0.912, 86.7%, and 80%; and that of DFI was 18.65%; with the AUC, sensitivity, and specificity of 0.861, 90%, 70%, respectively. In the infertile men, neither SSB-DFI nor SSB-DFI/DFI exhibited any correlation with semen parameters (P > 0.05); DFI was correlated negatively with the percentage of progressively motile sperm, sperm survival rate, and the percentage of morphologically normal sperm (P < 0.05 or P < 0.01), but not correlated with sperm concentration (P > 0.05); both DSB-DFI and DSB-DFI/DFI showed a negative correlation with sperm concentration, sperm survival rate, and the percentages of progressively motile sperm and morphologically normal sperm (P < 0.05 or P < 0.01).

CONCLUSIONDouble-stranded, rather than single-stranded DNA breaks, may be a factor inducing male infertility. The type of sperm DNA strand damage is of much reference value for the assessment of male fertility.

Case-Control Studies ; Comet Assay ; DNA Breaks, Double-Stranded ; DNA Breaks, Single-Stranded ; DNA Fragmentation ; Fertility ; Humans ; Infertility, Male ; diagnosis ; genetics ; Male ; Semen Analysis ; Sensitivity and Specificity ; Sperm Count ; Spermatozoa ; Staining and Labeling

Humans ; Stress, Mechanical ; Thrombosis ; etiology

UNLABELLEDOBJECTIVE : To study the anti-atherosclerotic mechanism of bear bile powder (BBP) in Shexiang Tongxin Dripping Pill (STDP) , and to provide scientific evidence for treating atherosclerosis (AS) by its therapeutic characteristics of cool resuscitation.

METHODSAS model was duplicated using ApoE-/- gene knocked mice fed with high-fat diet. Thirty ApoE-/- deficient male mice were divided into four groups according to body weight using random digit table, i.e., the model group (A, n =9), the STDP group (B, n=E7), the STDP without BBP group (C, n =7), and the BBP group (D, n =9). Besides, another 9 C57BL/6J male mice of the same age were recruited as a normal control group (E). All mice in Group B, C, and D were respectively administered with corresponding drugs (30, 30, and 0. 33 mg/kg) by gastrogavage. Equal volume of normal saline was administered to mice in Group A and E. All medication lasted for 8 successive weeks. Serum levels of inflammatory cytokines such as interleukin 2 (IL-2), interleukin 6 (IL-6), tumor necrosis factor a (TNF-α), interferon y (IFNγ), and oxidized low-density lipoprotein (ox-LDL) were measured by ELISA. Serum levels of malondialdehyde (MDA), activities of glutathione (GSH) and superoxide dismutase (SOD) were determined using biochemical assay. Contents of reactive oxygen species (ROS) in the aortic root was detected by dihydroethidum (DHE) fluorescent probe. Expression levels of microRNAs (such as miR-20, miR-21, miR-126, and miR-155) were detected by real-time PCR.

RESULTSThe fluorescence intensity of the aorta was obviously enhanced in Group A. But it was obviously attenuated in Group B, C, and D, and the attenuation was the most in Group B. Compared with Group E, serum levels of IL-2, IL-6, TNF-α, IFN-γ, oxLDL, and MDA all increased (P <0. 01), GSH contents and SOD activities decreased (P <0. 01), expression levels of miR-126, miR-21, and miR-155 in aorta increased (P <0. 01), and the expression level of miR-20 decreased in Group A (P<0. 01). Compared with Group A, serum levels of IL-2, IL-6, TNF-α, IFN-γ, oxLDL, and MDA were all down-regulated (P <0. 01), GSH contents and SOD activities were up-regulated (P <0. 01), expression levels of miR-126, miR-21, and miR-155 in aorta were down-regulated in Group B, C, and D (P <0. 01). The expression level of miR20 was up-regulated in Group B and D (P <0. 01). Compared with Group B, serum levels of IL-2, IL-6, TNF-α, IFN-γ increased (P <0.01); GSH contents and SOD activities decreased, levels of MDA and oxLDL increased (P <0. 01) in Group C and D. Expression levels of miR-20 and miR-155 were down-regulated in Group C and D (P <0. 01).

CONCLUSIONSSTDP played roles in significantly regulating inflammatory factors and oxidative stress factors. Its mechanism might be possibly associated with regulating expressions of miR-126, miR-21, miR-155, and miR-20 in aorta. BBP played significant roles in STDP.

Animals ; Aorta ; Apolipoproteins E ; metabolism ; Atherosclerosis ; Bile ; Cytokines ; Diet, High-Fat ; Drugs, Chinese Herbal ; administration & dosage ; pharmacology ; therapeutic use ; Interleukin-6 ; metabolism ; Lipoproteins, LDL ; metabolism ; Male ; Malondialdehyde ; metabolism ; Mice ; Mice, Inbred C57BL ; Oxidative Stress ; Plaque, Atherosclerotic ; drug therapy ; Reactive Oxygen Species ; Superoxide Dismutase ; metabolism ; Tumor Necrosis Factor-alpha ; metabolism ; Ursidae

To study the chemical constituents of the Maackia amurensis, the constituents were isolated by various chromatographies and the structures were elucidated on the basis of chemical and spectroscopic data (ESI-MS, 1D and 2D NMR). Thirteen isoflavone glycosides were isolated from the n-BuOH-soluble fraction of the 70% ethanol extract and identified as 7-hydroxy-4',6-dimethoxyisoflavone-7-O-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranoside (1), dalsympathetin (2), ononin (3), glycitin (4), genestin (5), saikoisoflavonoside A (6), afrormosin-7-O-beta-D-glucopyranoside (7), gehuain (8), kushenol O (9), 7-hydroxy-4',6-dimethoxyisoflavone-7-O-beta-D-apiofuranosyl-(1-->6)-beta-D-glucopyranoside (10), tectoridin (11), biochanin A 7-O-beta-D-gentiobioside (12) and 7-hydroxy-4'-methoxyisoflavone-7-O-beta-D-apiofuranosy l-(1-->6)-beta-D-glucopyranoside (13). Compound 1 is a new isoflavone glycoside, named as maackiaisoflavonoside, compounds 2, 8, 9, 10, 12 and 13 were isolated from this genus for the first time.
Disaccharides ; chemistry ; isolation & purification ; Isoflavones ; chemistry ; isolation & purification ; Maackia ; chemistry ; Molecular Structure ; Plant Bark ; chemistry ; Plants, Medicinal ; chemistry

Objective To investigate the clinical and radiological characteristics of parakinesia brachialis oscitans (PBD) related to yawning in stroke patient and its mechanism.Methods We reported 4 patients with involuntary raising of the paralyzed limbs when yawning in neurological unit of Hainan Branch of Chinese PLA General Hospital,and analyzed their clinical characteristics together with published cases in literatures.Results In this group of stroke patients,when they yawned,their paralyzed upper limb could lift upward involuntarily.Totally 22 patients with ischemic (n=20) and hemorrhagic (n=2) stroke were enrolled.Brain imaging showed infarcts in the middle cerebral artery (MCA) in 17 patients and in the brain stem in 5 patients.This phenomenon occurred 4 hours to 4 months (14.57 ± 31.66d) after stroke onset,and lasted from 1 week to 3 years (6.70 ± 11.66 months).Corticobulbar tract and pyramidal tract were both damaged in these 22 patients.The mechanism might be that after corticobulbar tract and pyramidal tract damaged,their dominant role in the cranial nerve nuclei of the brainstem and the anterior horn cells of the spinal cord disappeared,and the projection of oxytocinergic neurons from paraventricular nucleus functions,thus causing yawning and muscle contraction.Conclusion PBO may be a rare phenomenon of abnormal movement after stroke.This phenomenon indicates damaging of pyramidal tract,and PBO disappears gradually with the recovery of pyramidal tract function.

Objective To observe the mechanical allodynia of affected extremity and the leakage of Evans blue when performing thermal stimulation on the threshold, and explore the efficacy of microwave on rats models of neuropathic pain and the optimum temperature and other ideal parameters for this treatment by performing microwave coagulation treatment under different temperatures to them.Methods Forty-two SD rats were induced the models of spared nerve injury (SNI) on sciatic nerves,then were equally randomized into 3 groups: control group (only inserting microwave coagulation needle but not heating), 42℃ microwave coagulation treatment group and 60℃ microwave coagulation treatment group (n=14). The 50% paw withdrawal threshold of the affected extremity was measured 1 d before and 1, 2, 4, and 6 weeks after treatment. The leakage of Evans blue in injured tissue of the affected extremity when performing thermal stimulation on the threshold was observed 2 weeks after treatment and compared between each 2 groups. Results The 50% paw withdrawal threshold was stable in control group, 42℃ microwave coagulation treatment group and 60℃ microwave coagulation treatment group 1 d before treatment; no significant differences were noted between each 2 groups (P＞0.05). The 50% paw withdrawal threshold of 60℃ microwave coagulation treatment group 1, 2, 4, 6weeks after treatment was significantly increased as compared with that in the control group and 42℃microwave coagulation treatment group (P＜0.05). The concentrations of leakage of Evans blue in the 42℃ microwave coagulation treatment group ([9.96±1.01] g/g) and 60℃ microwave coagulation treatment group ([7.41±1.37] g/g) were significantiy decreased as compared with those in the control group ([14.8±2.88] g/g, P＜0.05). Conclusion Microwave coagulation can improve the mechanical hyperalgesia of in rats with neuropathic pain induced by SNI, and 60℃ is the proper temperature.Inflammation is inhibited by microwave coagulation and this might be one of the mechanisms to alleviate the pain.

This study was purpose to establish the transgenic mouse models of the truncated platelet integrin β3 by retrovirus-infected hematopoietic stem cells (HSCs) transplantation and to provide the basis for further study of the role of integrin β3 cytoplasmic domain in platelet bi-directional signaling pathways. Wild-type β3, β3-Δ759 (R(760) GT(762) truncated β3) and β3-Δ754 (T(755) NITYRGT(762) truncated β3) cDNAs were subcloned into MSCV MigR1 retroviral vector bearing a GFP gene and packaged into infective retrovirus with BOSC23 cell strain. The bone marrow HSCs of the β3 deficient mice were infected by the retroviruses, and transplanted into lethally-irradiated wild type C57BL/6 mice. GFP positive rate and surface β3 expression of the recipients' platelets at 6 to 8 weeks after transplantation were detected by flow cytometry to evaluate the transgenic efficiency. The results showed that four kinds of transgenic mouse models including vector, wild-type β3, β3-Δ759 and β3-Δ754 were established successfully. GFP positive rates of transgenic mouse platelets ranged from 18% to 66% and the β3 expression of transgenic mouse reached heterozygote (β3(+/-) level of mouse). It is concluded that establishment of transgenic mouse models mediated by retrovirus-infected HSCs transplantation is a feasible, fast, and high throughput transgenic approach and laid a solid foundation for further research on the role of integrin β3 cytoplasmic domain for bi-directional signaling of platelets in vivo, and for the gene therapy of platelet disorders.
Animals ; Blood Platelets ; metabolism ; Genetic Vectors ; Hematopoietic Stem Cell Transplantation ; Integrin beta3 ; metabolism ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Retroviridae ; genetics

BACKGROUNDNeuropathic pain is induced by injury or disease of the nervous system. Most studies have so far focused only on a few known molecules and signaling pathways among neurons. However, all signal transmissions involved in neuropathic pain appear to be an integral system at different molecular levels. This study was designed to screen the differentially expressed genes of the hypothalamus in chronic constriction injury (CCI) rats and analyze their functions in developing neuropathic pain.

METHODSTen adult female Sprague-Dawley rats ((200 +/- 10) g) were used in experimental group and sham group (n = 5 in each group). Mechanical allodynia tests were performed to ensure that the CCI rat model was constructed successfully. Total hypothalamus RNAs were isolated from each group. Forward suppression subtractive hybridization (SSH) library of rat hypothalamus was constructed and up-regulated cDNA clones at neuropathic pain states were obtained via suppressed subtractive hybridization technique and the functions of these genes were analyzed bioinformatically.

RESULTSMechanical allodynia tests showed that the experimental rats had a significantly reduced mechanical allodynia threshold 3 to 13 days after CCI vs sham surgery rats (P < 0.01), indicating that the model was successful. Forward SSH library of the rat hypothalamus was constructed successfully and 26 over-expressed expression sequence tags (ESTs) were obtained from these up-regulated cDNA clones.

CONCLUSIONTwenty-six up-regulated genes, involved in the regulation of cell cycle and apoptosis, signal transduction, and neuroprotection, may play key roles in decreasing mechanical withdraw thresholds in CCI rats, which implicates a multidimensional and integrated molecular mechanism at gene level in developing neuropathic pain with the supraspinal contributions.

Animals ; Computational Biology ; Disease Models, Animal ; Female ; Gene Expression Profiling ; Hypothalamus ; metabolism ; Nitric Oxide ; physiology ; Nucleic Acid Hybridization ; Pain ; metabolism ; Rats ; Rats, Sprague-Dawley ; Sciatic Neuropathy ; metabolism