Objective:To investigate the expression of SHIP1 in the patients with acute myeloid leukemia and its effect on the apoptosis of human leukemia cells.Methods:The expression of SHIP1 in the bone marrow of patients with acute myeloid leukemia was detected by Westem blot.U937 cells was transfected with SHIP1 expression vector (pEGFP-SHIP1 group) and empty vector control (pEGFP group) respectively,U937 cells without transfection were used as the control group.Flow cytometry was used to detect the apoptosis of the cells,the expression of SHIP1,Bcl-2,Bax,Akt,p-Akt were detected by western blot.Results:The expression of SHIP1 in the bone marrow of patients with acute myeloid leukemia was significantly lower than that of the normal human bone marrow SHIP 1 (P＜0.01).The SHIP1 and Bax expressions as well as the apoptotic rate ofpEGFP-SHIP1 group were significantly higher than those of the control group(P＜0.01),while the Bcl-2 and p-Akt expressions were significantly lower than those in the control group(P＜0.01).Conclusions:SH-P1 expression was down regulated in the bone marrow of patients with acute myeloid leukemia.SHIP1 could promote the apoptosis of human leukemia cells via Akt signaling pathway.

Objective:To investigate the changes of expression levels of TLR9 and IL-6 in the periodontal tissue during the experimental tooth movement of the rats, and the effecst of the MT01 on the expression of TLR9,TRAF6 and IL-6 in periodontal tissue,and to clarify its related mechanisms.Methods:Thirty Wistar rats were randomly divided into MT01 intervention group(n=6) and non-MT01 group(n=24).Force of 0.49 N was applied to move the upper first molars mesially. The rats in Non-MT01 intervention group were sacrificed on the days 3,7,14 and 21, and the rats in MT01 intervention group were all sacrificed on the day 7. RT-qPCR was used to detect the expression levels of TLR9,TRAF6 and IL-6 mRNA in maxillary first molar alveolar bone in each group.Results:The expression levels of IL-6 and TLR9 mRNA in loaded side were higher than those in control side(P<0.05), and reached the maximum levels on the day 7(P<0.01);with the interpose of MT01, the expression levels of TLR9 and TRAF6 mRNA were lower than control side(P<0.01).Conclusion: MT01 could down-regulate the expression levels of TLR9 and TRAF6 during orthodontic tooth movement and eventually resists the inflammation during the tooth movement.

Background As the only active component in final treatment phase of Tip-Edge Plus technique,the activation of nickel-titanium orthodontic archwires is one of the factors that affect the torque expression.It is necessary to evaluate the mechanical properties of the nickel-titanium wire used in the final treatment phase in simulated oral environments to forecast the treatment outcomes.Methods The mechanical properties of 171 thermal nickel-titanium wires of 0.35 mm (0.014-in) in diameters with different deflection of 40 mm in length were investigated with three-point bending test.The samples were divided into 2 groups:as-received and bended groups.In the bended group,samples were divided into 7 subgroups according to the amounts of deflection and named by the canine angulations (-25°,-19°,-13°,-7°,-1°,+5°,+11°).The deflection of wires was made by inserting the wires into the deep tunnel of Tip-Edge Plus brackets positioned in plaster casts with different canine angulations to mimic the use of nickel-titanium wires in the final treatment phase.Immersed the bended group in artificial saliva (pH 6.8) and preserved at 37.0°C.Eight durations of incubation were tested:1 to 8 weeks.Three analogous samples of each group and subgroups were tested per week.Stiffness (YS:E) and the load-deflection characteristics of unloading plateau section were obtained.Results Significant changes in specific mechanical properties were observed in long-term immersed and large deflected wires compared with as-received groups.Both immersion time and deflection affected the mechanical properties of wires in the simulated oral environment,and the two factors had synergistic effect.In groups-25°,-19° and -13°,stiffness (YS:E) increased then decreased and average plateau force and ratio of variance decreased then increased correspondingly at specific time.Conclusions In the final treatment phase of Tip-Edge Plus technique,the mechanical properties of nickel-titanium wire are associated with the using time and amounts of deflection and it may affect treatment outcomes.As the main reason for wire deflection,canine crown angulation plays an important role in the wire performance.It may be wise to focus on the canine crown angulations and using time in clinic with Tip-Edge Plus technique and make proper adjustment to help to make sure the treatment outcomes.

The canonical transient receptor potential channels (TRPCs) constitute a series of nonselective cation channels with variable degrees of Ca2+ selectivity. TRPCs consist of seven mammalian members, TRPC1, TRPC2, TRPC3, TRPC4, TRPC5, TRPC6, and TRPC7, which are further divided into four subtypes, TRPC1, TRPC2, TRPC4/5, and TRPC3/6/7. These channels take charge of various essential cell functions such as contraction, relaxation, proliferation, and dysfunction. This review, organized into seven main sections, will provide an overview of current knowledge about the underlying pathogenesis of TRPCs in cardio/cerebrovascular diseases, including hypertension, pulmonary arterial hypertension, cardiac hypertrophy, atherosclerosis, arrhythmia, and cerebrovascular ischemia reperfusion injury. Collectively, TRPCs could become a group of drug targets with important physiological functions for the therapy of human cardio/cerebro-vascular diseases.
Arrhythmias, Cardiac ; Atherosclerosis ; Cardiomegaly ; Cardiovascular Diseases ; Cerebrovascular Disorders ; Humans ; Hypertension ; Hypertension, Pulmonary ; Relaxation ; Reperfusion Injury ; Transient Receptor Potential Channels*

Objective To investigate the expression of miR-372 in the plasma of patients with acute my-eloid leukemia(AML)and the possible mechanism to participate in the development of AML. Methods Real-time quantitative PCR was used to detect the level of miR-372 in plasma. Bioinformatics software predicted the pos-sible target genes of miR-372 and dual luciferase reporter assay was performed to validate the prediction. In HL-60 cells,miR-372 was knocked down,and the effects on cell migration and cloning were detected by scratch test and clone formation. Results The level of miR-372 was significantly up-regulated in the plasma of AML patients. ROC analysis showed that miR-372 could distinguish between AML patients and healthy controls. Dual luciferase report-er assay showed that miR-372 could inhibit the activity of PTEN-3'UTR. Inhibition of miR-372 in HL-60 cells can significantly reduce the cell migration rate and clone formation ability. Conclusion In summary,for the first time,we showed novel data that the level of miR-372 was increased in the plasma of AML patients. By targeting the tumor suppressor gene PTEN,miR-372 may become a potential noninvasive biomarker for the screening and di-agnosis of AML.

OBJECTIVETo observe the metabolic, regulatory and anti-oxidative effects of modified Bushen Huoxue Decoction (BSHXD), a Chinese herbal medicine for kidney (Shen)-reinforcement and blood-activation, on an osteoarthritis (OA) rabbit model.

METHODSA rabbit model for knee joint OA was established by the classic Hulth's method. The OA model rabbits were randomized into 5 groups: the model control group, the positive control group treated with glucosamine sulfate, and the three BSHXD treated groups treated respectively with low, moderate, and high doses of BSHXD. In addition, a normal control group and a sham-operated group were set up. Experimental animals were sacrificed after a 7-week treatment, and pathological changes in cartilaginous tissue were estimated using the Mankin criteria. Hydroxyproline (Hyp) and malonaldehyde (MDA) contents in blood serum and urine, as well as superoxide dismutase (SOD) activity and nitric oxide (NO) content in blood serum and knee joint synovial homogenates were detected.

RESULTSMankin scoring showed insignificant statistical differences between the various treatment groups (P >0.05), but all were better than the model control group (P <0.05). Serum and urinary contents of Hyp and MDA as well as serum and synovial levels of NO were significantly lower, but the SOD activity in blood serum and synovial tissue was higher in the BSHXD treated groups than in the model group P <0.01); the effect of BSHXD was dose-dependent to some extent.

CONCLUSIONThe modified BSHXD shows an effect of improving cartilage metabolism in experimental rabbits with OA, and possesses osteo-chondric protective effects in antagonizing peroxidation injury.

Animals ; Antioxidants ; pharmacology ; therapeutic use ; Cartilage, Articular ; drug effects ; pathology ; Disease Models, Animal ; Drugs, Chinese Herbal ; pharmacology ; therapeutic use ; Hydroxyproline ; blood ; urine ; Male ; Malondialdehyde ; metabolism ; Nitric Oxide ; blood ; Osteoarthritis ; blood ; drug therapy ; metabolism ; pathology ; Rabbits ; Superoxide Dismutase ; blood ; Synovial Membrane ; drug effects ; enzymology ; pathology

BACKGROUNDAs the only active component in final treatment phase of Tip-Edge Plus technique, the activation of nickel-titanium orthodontic archwires is one of the factors that affect the torque expression. It is necessary to evaluate the mechanical properties of the nickel-titanium wire used in the final treatment phase in simulated oral environments to forecast the treatment outcomes.

METHODSThe mechanical properties of 171 thermal nickel-titanium wires of 0.35 mm (0.014-in) in diameters with different deflection of 40 mm in length were investigated with three-point bending test. The samples were divided into 2 groups: as-received and bended groups. In the bended group, samples were divided into 7 subgroups according to the amounts of deflection and named by the canine angulations (-25°, -19°, -13°, -7°, -1°, +5°, +11°). The deflection of wires was made by inserting the wires into the deep tunnel of Tip-Edge Plus brackets positioned in plaster casts with different canine angulations to mimic the use of nickel-titanium wires in the final treatment phase. Immersed the bended group in artificial saliva (pH 6.8) and preserved at 37.0°C. Eight durations of incubation were tested: 1 to 8 weeks. Three analogous samples of each group and subgroups were tested per week. Stiffness (YS:E) and the load-deflection characteristics of unloading plateau section were obtained.

RESULTSSignificant changes in specific mechanical properties were observed in long-term immersed and large deflected wires compared with as-received groups. Both immersion time and deflection affected the mechanical properties of wires in the simulated oral environment, and the two factors had synergistic effect. In groups -25°, -19° and -13°, stiffness (YS:E) increased then decreased and average plateau force and ratio of variance decreased then increased correspondingly at specific time.

CONCLUSIONSIn the final treatment phase of Tip-Edge Plus technique, the mechanical properties of nickel-titanium wire are associated with the using time and amounts of deflection and it may affect treatment outcomes. As the main reason for wire deflection, canine crown angulation plays an important role in the wire performance. It may be wise to focus on the canine crown angulations and using time in clinic with Tip-Edge Plus technique and make proper adjustment to help to make sure the treatment outcomes.

Humans ; Mechanical Phenomena ; Nickel ; Orthodontic Wires ; Titanium ; Tooth Movement Techniques ; methods

Objective:To analyze the epidemiological characteristics, high risk factors and pathogenic factors of sepsis-related liver injury patients by collecting epidemiological data and the sequencing results.Methods:A total of 288 sepsis patients been admited to the Emergency Department of the First Affiliated Hospital of Air Force Military Medical University from January 1, 2018 to December 31,2019 were selected and divided into sepsis liver injury group ( n = 44) and sepsis without liver injury group ( n = 244) according to whether acute liver injury occurred or not. The differences ofthe general data, hematological parameters, severity of illness and other indicators at admission between the two groups were compared and analyzed. Logistic regression was used to analyze the risk factors of sepsis-related liver injury. Total of 8 septic patients with liver injury and 4 septic patients without liver injury were selected for RNA-sequencing. Ribonucleic acid (RNA) was extracted from peripheral blood mononuclear cell of patients, detected using RNA-seq, and differential genes were screened and analyzed. Results:Compared with the sepsis without liver injury group, patients in the liver injury group suffered less hypertension (11.4% vs. 30.3%) and relatively more chronic renal insufficiency (40.9% vs. 12.1%); more patients were admitted to the emergency department due to renal disease (43.2% vs. 24.6%), higher sequential organ failure score (SOFA) and acute physiology and chronic health evaluation Ⅱ (APACHE Ⅱ) score (SOFA (points) 9.86 ± 3.59 vs. 5.41 ± 3.13, APACHE Ⅱ (points) (16.07 ± 4.41) vs. (14.46 ± 3.77), with prolonged hospital days (d): 8 (4.75, 13.75) vs. 6 (2, 9)]; in the liver injury group, the incidence of infection in respiratory and digestive systems (70.5% vs. 18.0%) andthe chance of infection with Staphylococcus aureus were higher (9.1% vs. 2.0%), and laboratory parameters (procalcitonin (PCT), lactate dehydrogenase (LDH), partial thromboplastin time (APTT), direct bilirubin (DBIL), aspartate aminotransferase (ALT), alanine aminotransferase (AST)) were significantly increased [PCT (μg/L) (23.90 ± 33.22) vs. (10.95 ± 20.18), LDH (U/L) 540.00 (370.50, 1177.00) vs. 168.00 (98.65, 875.18), APTT (s) (41.50 ± 3.13) vs. (36.23 ± 5.27), DBIL (μmol/L) 18.50 (10.10, 58.85) vs. 10.30 (7.60, 16.85), ALT (U/L) 67.00 (41.25, 164.00) vs. 29.00 (18.00, 51.25), AST (U/L), 101.00 (51.25, 174.75) vs. 35.00 (25.00, 65.50)], while platelet (PLT) and albumin (Alb) were significantly lower than those in the sepsis without liver injury group [PLT (× 10 9/L) 62.50 (38.50, 164.25) vs. 90.5 (66.25, 165.5), Alb (g/L) (30.17 ± 7.16) vs. (34.20 ± 6.50)] (all P < 0.05).Logistic regression analysis revealed that Staphylococcus aureus infection, thrombocytopenia, elevated procalcitonin, elevated lactate dehydrogenase, elevated total bilirubin, and elevated glutamyltransferase were associated with sepsis with acute liver injury (odds ratio, OR) with 95% confidence interval (95% CI) of 0.1167 (0.0380~0.7300), 0.9836 (1.0060~1.0290), 0.9986 (1.0000~1.0001), 0.9745 (1.0040~1.0170), 1.0020 (0.9940~1.0000), and 0.9931 (1.0000~1.0001), respectively. A total of 311 significantly differential expressed genes (DEGs) were selected, with 151 up-regulated genes and 160 down-regulated genes compared with the septic non-liver injury group. Further bioinformatics analysis reveled that the top 10 GO sequences are:①platelet α granules,② platelet α granule cavity,③wound healing,④cell migration,⑤multicellular organism process,⑥anatomical structure development,⑦cartilage ossification,⑧tissue development,⑨ keratinization,⑨Multicellular biological development. And KEGG pathway enrichment analysis revealed that human disease-related pathways were dominant, mainly including purine metabolism, AGE-RAGE signaling pathway, p53 signaling pathway, porphyrin and chlorophyll metabolism, nitrogen metabolism, mineral nutrient absorption, protein processing in the endoplasmic reticulum, and FoXo signaling pathway. Conclusions:Staphylococcus aureus infection, thrombocytopenia, elevated procalcitonin, elevated lactate dehydrogenase, elevated total bilirubin, and elevated glutamyltransferase were independent risk factors for sepsis liver injury. Coagulation dysfunction, apoptosis, and metabolic level changes may be important mechanisms of sepsis-associated liver injury, which are related to purine metabolism, porphyrin and chlorophyll metabolism and the expression of genes related to FoXo signaling pathway, Hippo signaling pathway, and p53 signaling pathway.

PURPOSE: Lovastatin is an effective inhibitor of cholesterol synthesis. A previous study demonstrated that lovastatin can also suppress airway hyperresponsiveness (AHR) in murine model of asthma. We aimed to investigate the effect of lovastatin on mucus secretion and inflammation-associated gene expression in the lungs of murine model of asthma. METHODS: Female BALB/c mice were sensitized and challenged with ovalbumin (OVA) by intraperitoneal injection, and orally administered lovastatin from days 14 to 27 post-injection. Gene expression in lung tissues was analyzed using real-time polymerase chain reaction. AHR and goblet cell hyperplasia were also examined. BEAS-2B human bronchial epithelial cells were used to evaluate the effect of lovastatin on the expression of cell adhesion molecules, chemokines, and proinflammatory cytokines in vitro. RESULTS: We showed that lovastatin inhibits the expression of Th2-associated genes, including eotaxins and adhesion molecules, in the lungs of murine model of asthma. Mucin 5AC expression, eosinophil infiltration and goblet cell hyperplasia were significantly decreased in the lung tissue of murine model of asthma treated with lovastatin. Furthermore, lovastatin inhibited AHR and expression of Th2-associated cytokines in bronchoalveolar lavage fluid. However, a high dose (40 mg/kg) of lovastatin was required to decrease specific IgE to OVA levels in serum, and suppress the expression of Th2-associated cytokines in splenocytes. Activated BEAS-2B cells treated with lovastatin exhibited reduced IL-6, eotaxins (CCL11 and CCL24), and intercellular adhesion molecule-1 protein expression. Consistent with this, lovastatin also suppressed the ability of HL-60 cells to adhere to inflammatory BEAS-2B cells. CONCLUSIONS: These data suggest that lovastatin suppresses mucus secretion and airway inflammation by inhibiting the production of eotaxins and Th2 cytokines in murine model of asthma.
Animals ; Asthma* ; Bronchoalveolar Lavage Fluid ; Cell Adhesion Molecules ; Chemokines ; Cholesterol ; Cytokines ; Eosinophils ; Epithelial Cells ; Female ; Gene Expression ; Goblet Cells ; HL-60 Cells ; Humans ; Hyperplasia ; Immunoglobulin E ; Inflammation* ; Injections, Intraperitoneal ; Intercellular Adhesion Molecule-1 ; Interleukin-6 ; Lovastatin* ; Lung ; Mice ; Mucin 5AC ; Mucus* ; Ovalbumin ; Ovum ; Real-Time Polymerase Chain Reaction

Adult ; Bone Neoplasms ; diagnosis ; pathology ; Chondrosarcoma ; diagnosis ; pathology ; Female ; Humans ; Magnetic Resonance Imaging ; Male ; Mediastinal Neoplasms ; diagnosis ; pathology ; Neurilemmoma ; diagnosis ; pathology ; Peripheral Nervous System Neoplasms ; diagnosis ; pathology ; Phrenic Nerve ; Ribs ; Tomography, X-Ray Computed