BackgroundThe excess volume of contrast media (CM) is a marker of a more severe coronary culprit lesion and longer intervention duration in patients undergoing cardiac procedures. However, it is unclear whether the contrast volume is directly correlated with worse clinical outcomes. The aim of this study was to investigate the association between contrast dose and the incidence of 1-year major adverse cardiac and cerebrovascular events (MACCE) and all-cause bleeding events in patients undergoing cardiac catheterization and coronary angiography (CAG).

MethodsWe prospectively enrolled 10,961 consecutive patients diagnosed with coronary heart disease expecting CAG from 2012 to 2013. The study population was pursued with a follow-up duration of 1 year. The predictive value of contrast volume, divided into quartiles, for the risk of MACCE and all-cause bleeding events was assessed using logistic regression analysis.

ResultsThe cumulative incidence of 1-year MACCE was 8.65%, which was directly associated with increasing contrast volume. In particular, MACCE was observed in 7.16%, 7.89%, 9.31%, and 11.73% of cases in the contrast volume quartile Q1 (≤100 ml), Q2 (101-140 ml), Q3 (141-200 ml), and Q4 (>200 ml), respectively (P < 0.001). Moreover, the incidence of 1-year all-cause bleeding events was noted in 4.70%, 5.93%, 7.28%, and 8.21% of patients in Q1, Q2, Q3, and Q4, respectively (P < 0.001). The survival analysis showed that the 1-year MACCE rate was higher in patients using greater CM volume during the CAG. CM volume used >140 ml was associated with the occurrence of 1-year MACCE, and the incidence was dramatically elevated in patients exceeding a contrast volume of 200 ml (P = 0.007).

ConclusionOur data suggested that higher contrast volume was significantly correlated with an increased risk of MACCE and all-cause bleeding events in patients undergoing cardiac catheterization.

Trial RegistrationClinicalTrials.gov, NCT01735305; https://clinicaltrials.gov/ct2/show/NCT01735305?id=NCT017353057rank=1.

Objective To investigate the impact of accelerator′s multi-leaf collimator (MLC) on the radiotherapy dose with different gantry angles.Methods Measured with Mapcheck 2D diode array and 30 cm×30 cm×3 cm solid water, Pre-selecting the 30 appropriate single fields and 0°,45°,90°,270°,315° gantry angles of static and dynamic intensity modulated radiation therapy (IMRT), quantification analysis of the passing rate with MapCheck γ(3%/3 mm) and (5%/3 mm) analysis methods, and the same method to 30 examples static and dynamic IMRT plans.Results When the accelerator collimator angle is 0°,the 30 appropriate single fields′ passing rate of between 0°gantry angle and 45°,90°,270°,315°gantry angles of static and dynamic IMRT accordingly is 97.71% and 96.25%(t=1.70, P=0.389), 96.34% and 93.72%(t=2.95, P=0.002), 96.65% and 92.98%(t=2.87, P=0.005), 95.87% and 93.15%(t=2.71, P=0.006), 96.09% and 93.51%(t=2.89, P=0.004) with MapCheck γ(3%/3 mm) analysis methods, however, the passing rate also does not have the difference, respectively is 99.31%-99.73% and 98.89-99.68%(t=0.57-1.90, P=0.913-0.725) with MapCheck γ(5%/3 mm) analysis methods;the passing rate of 30 examples static and dynamic IMRT plans accordingly is 96.11%-96.76% and 94.88%-95.78%(t=1.02-1.61, P=0.317-0.235).Conclusions When the accelerator collimator angle is 0°, at different gantry angles, MLC leaves due to gravity, friction, inertia, etc caused by errors in place, the physical penumbra and leakage radiation will indeed affect the IMRT dose, however, the deviation of dose distribution is within acceptable 5%.

Objective To investigate the effects of sevoflurane on renal ischemia-reperfusion (I/R) injury in rats and the role of Na+-2Cl--K+ cotransporter 1 (BSC1) and aquaporin 2 (AQP2) in it.Methods Twentyfour male Sprague-Dawley rats,aged 8-12 weeks,weighing 125-145 g,were randomly divided into 3 groups (n =8 each) ∶ sham operation group (S group),I/R group and sevoflurane group (Sev group).Renal ischemia was induced by occlusion of the renal artery for 45 min with atraumatic microclips followed by 24 h reperfusion.In group Sev,the rats inhaled 1 MAC (2.2％) sevoflurane,renal ischemia was induced after loss of consciousness and 1 MAC (2.2％) sevoflurane was inhaled for 1 h.The urine were collected at 24 h before I/R (T1) and 24 h of reperfusion (T2) for detection of urine specific gravity and creatinine (Cr) level.The urine volume was recorded.The endogenous creatinine clearance rate (Ccr) was calculated.Blood samples were taken from the irferior vena cava at T2 for determination of concentrations of serum blood urea nitrogen (BUN) and Cr and activities of superoxide dismutase (SOD) and myeloperoxidase (MPO),malondialdehyde (MDA) concentration.The left kidney was removed for determination of MPO and SOD activities and MDA content and for microscopic examination and the pathological changes of the renal tubule were scored.The expression of AQP2 and BSC1 was detected by immunohistochemistry and Western blot.Results Compared with group S,the urine volume was enlarged,concentrations of serum BUN and Cr were significantly increased,urine specific gravity and Ccr were significantly decreased,MPO and MDA levels were significantly increased,SOD activity was significantly decreased,the pathological score was significantly increased,and the expression of AQP2 and BSC1 was down-regulated in groups I/R and Sev (P ＜ 0.05).Cer was significantly higher,conceutratious of serum BUN and Cr and MPO and MDA levels were lower,SOD activity was higher,the pathological score was lower,and the expression of AQP2 and BSC1 was higher in group Sev than in group I/R (P ＜ 0.05).Sevoflurane inhalation significantly attenuated the pathological changes.Conclusion Sevoflurane can attenuate renal I/R injury in rats through up-regulating the expression of BSC1 and AQP2.

Objective: To prepare Puerariae Radix Flavones Dropping Pills and to investigate the dissolution. Methods: Exterior quality, weight variation, and resolving time were used as comprehendsive evaluation indicators to select dropping conditions by orthogonal design. HPLC was used to determine the content of puerarin and rotating basket method was used to determine the dissolution rate in vitro of the dropping pills and tablets. Results: The optimal preparation conditions for the pills were as follows: proportion of drug and matrix was 1:3, drop rate was 20 d/min, the temperature of drug fluids was 80°C, the condensate tube outlet temperature was 50°C, dimethylsilicone was the refrigerant at the temperature of 10°C and 6 cm distance above liquid level. The content of peurarin in the dropping pills was 5.542 mg/g. The accumulated dissolution rate of puerarin in the dropping pills reached 98.81% in 20 min, while the accumulated dissolution rate of puerarin in tablets was only 10.70% in 20 min. Conclusion: The preparation process and HPLC determination method are simple, stable, and feasible. The dissolution rate of puerarin can be improved in the Dropping pills.

To investigate the effects of maternal exposure to 13 chemicals mixture (CM) during pregnancy on pregnancy outcome and health status of maternal/offspring mice. C57BL/6 pregnant mice were given drinking water containing carbaryl dimethoate glyphosate methomyl methyl parathion triadimefon aspartame sodium benzoate calcium disodium ethylene diamine tetra-acetate ethylparaben butylparaben bisphenol A and acacia gum The effects of CM exposure on pregnancy outcome, health status of dams/offspring, levels of circulating inflammatory cytokines in dams/offspring and emotional related behaviors of offspring were evaluated. CM exposure during pregnancy had no significant effect on pregnancy outcome, liver function, body weight of the dams in late pregnancy and uterine/ovarian weight after delivery, however, it led to an increase in maternal serum IFN-γ level （<0.05）. CM exposure during pregnancy had no significant effect on the liver function of offspring, but increased the serum IFN-γ, prefrontal cortex IFN-γ, and TNF-α and hippocampus IFN-γ levels in the offspring（all <0.01）. In addition, the offspring of CM group showed significant abnormal emotion-related (autism-like) behaviors in adulthood, especially in male offspring. Low dose CM exposure during pregnancy may induce inflammation status in dams/offspring, and lead to autism-like behaviors in offspring, indicating the potential effects of low dose CM exposure on human maternal and infant health.
Adult ; Animals ; Autistic Disorder/chemically induced* ; Female ; Humans ; Male ; Maternal Exposure/adverse effects* ; Mice ; Mice, Inbred C57BL ; Phenotype ; Pregnancy ; Prenatal Exposure Delayed Effects/chemically induced*

OBJECTIVETo evaluate the efficacy and experience in right ventricular pacing-percutaneous balloon aortic valvuloplasty (RVP-PBAV) for congenital aortic stenosis (AS).

METHODA total of sixteen children with AS accepted the treatment with RRVP-PBAV. The patients were at ages 6 months to 15 years, their median age was 5.4 years. Their body weight was between 8.5 and 59.0 kg, average (22.3 ± 16.5) kg. The gradient pressure across the aortic valve was measured for all the patients and aortic regurgitation was observed. The follow-up time ranged from 1 month to 5.5 years.

RESULTAll patients underwent RVP-PBAV successfully. The ratios of balloon/valve were 0.86 to 1.12. The gradient pressure varied from preoperative Δp = (96 ± 32) mmHg (1 mmHg = 0.133 kPa) to the immediate postoperative ΔP = (41 ± 26) mmHg, (P < 0.05). One case had postoperative restenosis, and 3 cases were complicated with bicuspid aortic valve deformity.

CONCLUSIONThe treatment with RVP-PBAV for congenital aortic stenosis is safe and reliable. Rapid ventricular pacing is a safe procedure to stabilize the balloon during balloon aortic valvuloplasty and may decrease the incidence of aortic insufficiency.

Adolescent ; Aorta ; Aortic Valve ; abnormalities ; Aortic Valve Insufficiency ; Aortic Valve Stenosis ; therapy ; Balloon Valvuloplasty ; methods ; Body Weight ; Cardiac Surgical Procedures ; Child ; Child, Preschool ; Follow-Up Studies ; Heart Defects, Congenital ; Heart Valve Diseases ; Heart Ventricles ; Humans ; Infant ; Postoperative Period ; Treatment Outcome ; Vascular Malformations

OBJECTIVETo investigate the effect of total alkaloids of Sophora alopecuroides (TASA) on dextran sulfate sodium (DSS)-induced colitis in mice.

METHODSChronic experimental colitis was induced by administration of 4 cycles of 4% DSS. Fifty mice were randomly distributed into 4 groups (normal, DSS, DSS/high-dose TASA, and DSS/low-dose TASA groups) by a random number table with body weight stratification. Mice in the normal group (n=11) and DSS-induced colitis control group (n=15) received control treatment of 20 mL/kg distilled water; DSS plus TASA high- and low-dose groups (n=12 each) were treated with TASA solution (20 mL/kg) at the doses of 60 mg/kg and 30 mg/kg, respectively. The severity of colitis was assessed on the basis of clinical signs, colon length, and histology scores. Moreover, secretory immunoglobulin A (sIgA) and haptoglobin (HP) were analyzed by enzyme linked immunosorbent assay; intercellular adhesion molecule 1 (ICAM-1) and macrophage-migration inhibitory factor (MIF) gene expressions were analyzed by quantitative reverse transcriptase realtime polymerase chain reaction (qRT-PCR) using SYBA green I; and nuclear factor κ B (NF-κ B) expression and activation and p65 interaction with the promoter of ICAM-1 gene were assessed by Western blotting and chromatin immunoprecipitation assay.

RESULTSTASA administration significantly attenuated the damage and substantially reduced HP elevation and maintained the level of cecum sIgA. TASA inhibited the ICAM-1 gene expression and had no effect on MIF gene expression. Also, TASA was able to reduce phospho-I κ B α (p-I κ B α) protein expression; however, it had no effect on the activation of I κ B kinase α (IKK α) and inhibitor of NF-κ B α (I κ B α). Moreover, TASA inhibited the p65 recruitment to the ICAM-1 gene promoter.

CONCLUSIONSTASA had a protective effect on DSS-induced colitis. Such effect may be associated with its inhibition of NF-κ B activation and blockade of NF-κ B-regulated transcription activation of proinflammatory mediator gene.

Alkaloids ; pharmacology ; therapeutic use ; Animals ; Cecum ; drug effects ; metabolism ; pathology ; Colitis ; chemically induced ; drug therapy ; pathology ; prevention & control ; Colon ; pathology ; ultrastructure ; Dextran Sulfate ; Down-Regulation ; drug effects ; Female ; Haptoglobins ; metabolism ; I-kappa B Proteins ; metabolism ; Immunoglobulin A, Secretory ; metabolism ; Intercellular Adhesion Molecule-1 ; genetics ; metabolism ; Intestinal Mucosa ; drug effects ; pathology ; ultrastructure ; Macrophage Migration-Inhibitory Factors ; genetics ; metabolism ; Mice ; Mice, Inbred C57BL ; NF-KappaB Inhibitor alpha ; Phosphorylation ; drug effects ; Phytotherapy ; Promoter Regions, Genetic ; genetics ; Protective Agents ; pharmacology ; therapeutic use ; Protein Binding ; drug effects ; Signal Transduction ; drug effects ; Sophora ; chemistry ; Transcription Factor RelA ; metabolism

OBJECTIVE: To observe the effects of bone marrow mesenchymal stem cells( BMSCs) on the treatment of pulmonary fibrosis in silicosis mice. METHODS: Specific pathogen free healthy male C57BL/6 mice were randomly divided into control group,silicosis group and treatment group with 10 mice in each group. The mice of the control group were given one intra-tracheal injection of 20. 0 μL 0. 90% sodium chloride solution. The silicosis group and treatment group received one 20. 0 μL( mass concentration 250 g/L) of silica dust suspension. After 4 weeks,mice in treatment group were injected with 250. 0 μL of BMSCs suspension( cell density 2 × 10~9/L) by tail vein and silicosis group injected with 250. 0 μL of 0. 90% sodium chloride solution instead,once a week with continuous treatment for 4 weeks. Control group was not given any treatment. Mice were euthanized two weeks after the last treatment. Pathological sections were observed,pulmonary fibrosis score( Ashcroft scores) was marked. Lung coefficient was measured. Lung tissue hydroxyproline( HYP) level and serum transforming growth factor β1( TGF-β1) level were measured. The level of pulmonary fibrosis was scored and the percentages of T helper cell 17( Th17 cell) and regulatory T cell( Treg cell) of spleen and hilar lymph node( HLN) were measured by flow cytometry. RESULTS: The results of lung histopathological examination showed that the pulmonary fibrosis was severe in silicosis group. Massive collagen fiber accumulation and silicotic nodule were found. In treatment group,fibrosis was mild,little collagen fiber accumulation and silicotic nodule were found. The lung coefficient,Aschcroft scores,lung tissue HYP level,serum TGF-β level and the percentage of Th17 cell of spleen and HLN in silicosis group were higher than that of control group( P < 0. 05),while the above indexes of treatment group were lower than that of silicosis group( P < 0. 01). The percentage of Treg cell of spleen and HLN in silicosis group were lower than that of control group( P < 0. 05),while those indexes of treatment group were higher than that of silicosis group( P < 0. 01).CONCLUSION: BMSCs could effectively alleviate the pulmonary fibrosis in silicosis mice and correct the imbalance of Th17/Treg.

OBJECTIVE: To explore the repair effects of bone marrow mesenchymal stem cells( BMSCs) on hematopoietic injury induced by benzene poisoning in mice. METHODS: Five specific pathogen free healthy male Kunming mice were selected to obtain BMSCs through bone marrow attachment culturing method. The Kunming mice were randomly divided into poisoning group and BMSCs transplantation group,18 mice in each group,after the benzene poisoning model was established by subcutaneous multi-point injection of benzene and oil mixture 3 times/week,10 weeks continuously. Each group was injected through tail vein with 250. 0 μL 0. 9% sodium chloride solution or 250. 0 μL BMSCs suspension( cell density 2 × 109/L) once per week for 4 weeks,respectively. The control group( 10 mice) was not given any treatment.Mice were euthanized 2 weeks after treatment. The blood routine examination was conducted. Nucleated cells in bone marrow were observed after Giemsa staining. The clones of hemopoietic progenitor cells were counted and the levels of serum interferon-γ( IFN-γ) were examined using enzyme-linked immune sorbent assay. RESULTS: The mouse model of chronic benzene poisoning was established successfully. After the BMSCs transplantation treatment,the white blood cell count,platelet count,red blood cell count,hemoglobin level and bone marrow nucleated cell as well as granulocyte-macrophage colony forming unit( CFU-GM) in benzene poisoning group were significantly decreased compared with control group( P <0. 01),while those indexes of BMSCs treatment group were higher than that of benzene poisoning group( P < 0. 05). The counts of platelet,red blood cell,bone marrow nucleated cell and CFU-GM in BMSCs treatment group were significantly lower than that of control group( P < 0. 05). The level of serum IFN-γ in benzene poisoning group was higher than that of control group( P < 0. 01),and serum IFN-γ level in BMSCs treatment group was lower than that of benzene poisoning group( P < 0. 01). There was no significant difference of IFN-γ level in BMSCs treatment group compared with control group( P > 0. 05). CONCLUSION: BMSCs have repair effects on hematopoietic system injury caused by benzene poisoning.

OBJECTIVE: To evaluate the risk factors of stomal recurrence in patients after total laryngectomy. METHOD: A thorough literature search was performed among Wanfang database, Chinese Scientific Journals Database of VIP and pubmed database. Meta analysis was performed on a total of 2725 patients in 2 Chinese papers and 6 English papers which met the inclusion criteria. Data was analyzed by RevMan 5.0 software. RESULT: Subglottic and transglottic location (tumor location), the extent of the tumor of the primary site (T4), preoperative tracheotomy were important risk factors of recurrence after total laryngectomy. CONCLUSION Subglottic and transglottic location (tumor location), the extent of the tumor of the primary site (T4), preoperative tracheotomy were related to stomal recurrence after total laryngectomy.
Carcinoma, Squamous Cell ; pathology ; Humans ; Laryngeal Neoplasms ; pathology ; Laryngectomy ; Neoplasm Recurrence, Local ; Postoperative Period ; Risk Factors