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Objective:To explore the effect of intraoperative blood salvage (IBS) in the operation of infective endocarditis (IE) and the risk factors of death within half a year after operation.Methods:Used retrospective research methods, a total of 61 patients who were diagnosed as IE and received surgical treatment in Department of Cardiovascular and Large Vascular Surgery, Huizhou Central People′s Hospital from April 2017 to November 2020 were selected as subjects. The patients were divided into autologous group ( n=30) and allogeneic group ( n=31) according to different blood transfusion methods. Patients in the autogenous group received IBS, and patients in the allogeneic group received allogeneic blood transfusion. The indexes of coagulation function [activated partial thromboplastin time(APTT), thrombin tim(TT), prothrombin time(PT), D-dimmer(D-D), fibrinogen degradation product(FDP)], immune reaction (CD3 + CD4 + T cells, CD3 + CD8 + T cells, CD16 + CD56 + NK cells, TLR2 + cells, TLR4 + cells) and inflammatory reaction [soluble CD40 ligand(sCD40L), neutrophil chemokine -1(CINC-1), tumor necrosis factor-α(TNF-α), interleukin-6(IL-6)] were compared between the autologous group and the allogeneic group, as well as the incidence of postoperative adverse reactions. The end event was death half a year after operation, and the subjects were divided into death group ( n=15) and survival group ( n=46). The clinical data of the death group and the survival group were compared. Measurement data were expressed as mean ± standard deviation ( ± s), and t-test was used for comparison between groups; Chi-square test was used for comparison of enumeration data between groups, and the IBS variables were included and excluded to establish the prediction models of death half a year after operation, respectively. The model was evaluated by the receiver operating characteristic curve (ROC), and the model was internally verified by the method of Bootstrap repeated sampling. IBS was included and removed to establish the prediction model of death within half a year after surgery, and ROC was used to evaluate the model. Bootstrap repeated sampling was used to verify the model internally. Results:Cardiac insufficiency, hypotension, IBS, multivalvular disease and age were independent risk factors for postoperative death ( P<0.05). The model with IBS variables has higher predictive value. 5 days after operation, there were significant differences in the indexes of immune reaction [CD3 + CD4 + T cells: (37.49±5.74)% vs (31.68±4.46)%, CD3 + CD8 + T cells: (23.07±3.24)% vs (17.82±2.29)%, CD16 + CD56 + NK cells: (1.61±0.18)% vs (1.02±0.15)%, TLR2 + cells: (9.24±1.15)% vs (18.40±2.21)%, TLR4 + cells: (7.79±0.82)% vs (12.33±1.57)%] and inflammatory reaction [sCD40L: (59.21±7.80) pg/mL vs (84.33±9.35) pg/mL, CINC-1: (40.27±5.83) pg/mL vs (72.86±9.35) pg/mL, TNF-α: (10.86±1.26) ng/mL vs (17.03±2.20) ng/mL and IL-6: (6.32±0.77) ng/mL vs (11.35±1.74) ng/mL] between autologous group and allogeneic group ( P<0.01). Intra-group comparison of patients in autologous group, before and 5 days after operation, there were significant differences in the indexes of immune response [CD3 + CD4 + T cells: (48.55±6.67)% vs (37.49±5.74)%, CD3 + CD8 + T cells: (30.38±4.69)% vs (23.07±3.24)%, CD16 + CD56 + NK cells: (2.53±0.44)% vs (1.61±0.18)%, TLR2 + cells: (6.50±0.61)% vs (9.24±1.15)%, TLR4 + cells: (4.02±0.63)% vs (7.79±0.82)%] and inflammatory response [sCD40L: (38.64±6.75) pg/mL vs (59.21±7.80) pg/mL, CINC-1: (31.65±5.68) pg/mL vs (40.27±5.83) pg/mL, TNF-α: (7.59±0.85) ng/mL vs (10.86±1.26) ng/mL and IL-6 (5.10±0.63) ng/mL vs (6.32±0.77) ng/mL] ( P<0.01). Intra-group comparison of patients in allogeneic group, before and 5 days after operation, there were significant differences in the indexes of immune reaction [CD3 + CD4 + T cells: (49.13±6.82)% vs (31.68±4.46)%, CD3 + CD8 + T cells: (30.65±4.91)% vs (17.82±2.29)%, CD16 + CD56 + NK cells: (2.51±0.26)% vs (1.02±0.15)%, TLR2 + cells: (6.36±0.66)% vs (18.40±2.21)%, TLR4 + cells (4.08±0.56)% vs (12.33±1.57)%] and inflammatory response [sCD40L: (39.14±6.03) pg/mL vs (84.33±9.35) pg/mL, CINC-1: (31.24±5.77) pg/mL vs (72.86±9.35) pg/mL, TNF-α: (7.64±0.76) ng/mL vs (17.03±2.20) ng/mL and IL-6: (5.04±0.82) ng/mL vs (11.3±1.74) ng/mL] ( P<0.01). There were 3 cases of hypoproteinemia, 2 cases of incision infection and 1 case of cardiac adverse event in the autologous group; 4 cases of hypoproteinemia, 3 cases of incision infection and 1 case of cardiac adverse event in the allogeneic group. There was no significant difference in the incidence of postoperative adverse reactions between the two groups ( P>0.05). Conclusions:The predictive model included in IBS can better predict the mortality of within half a year after IE. The use of IBS in IE surgery will not significantly affect the blood coagulation function and the incidence of postoperative adverse reactions, but can improve immune function and inhibit inflammatory reaction.
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Objective@#To observe the expression level of microRNA-181 (miR-181) and importin-α3 in oxidized low density lipoprotein (ox-LDL) induced vascular endothelial cell injury models, and explore the effect and mechanism of miR-181 on endothelial cell injury.@*Methods@#Human vein endothelial cell line CRL-1730 were cultured and vascular endothelial cell injury model was established by intervention with ox-LDL. The cells were divided into control group (intervened by double distilled water), low-dose group (intervened by 10 μg/ml ox-LDL) and high-dose group (intervened by 20 μg/ml ox-LDL). In addition, cells of low-dose group were divided into miR-181 mimic group (miR-181 mimic was transfected) and mimic control group (miR-181 mimic control was transfected). Cell viabilities, mRNA and protein expression level of interleukin-6 (IL-6), miR-181, importin-α3, and nuclear transcription factor-κB (NF-κB) were measured by methyl thiazolyl tetrazolium (MTT), real-time PCR and Western blot, respectively.@*Results@#(1) The cell viabilities in low-dose group and high-dose group were lower than control group (0.207±0.012 and 0.204±0.007 vs. 0.323±0.018, all P<0.01). The relative IL-6 mRNA expression in low-dose group and high-dose group were higher than control group (1.24±0.16 and 1.36±0.23 vs. 0.22±0.03, all P<0.01). The relative miR-181 mRNA expression in low-dose group and high-dose group were lower than control group (0.91±0.11 and 0.88±0.07 vs. 2.20±0.13, all P<0.01). The relative importin-α3 mRNA expression in low-dose group and high-dose group were higher than control group (1.23±0.22 and 0.55±0.03 vs. 0.44±0.06, all P<0.01). The relative NF-κB mRNA expression in low-dose group and high-dose group were higher than control group (1.67±0.34 and 0.41±0.11 vs. 0.11±0.04, all P<0.01). The relative importin-α3 protein expression in low-dose group and high-dose group were higher than control group (1.44±0.23 and 1.31±0.22 vs. 0.29±0.08, all P<0.01). The relative NF-κB protein expression in low-dose group and high-dose group were higher than control group (0.43±0.05 and 0.37±0.04 vs. 0.16±0.03, all P<0.01). (2)The cell viabilities in miR-181 mimic group was higher than in mimic control group (0.262±0.008 vs. 0.211±0.021, P<0.01). The relative miR-181 mRNA expression level in miR-181 mimic group was higher than in mimic control group (4.23±0.34 vs. 0.88±0.16, P<0.01). The relative importin-α3 mRNA expression level in miR-181 mimic group was lower than in mimic control group (0.24±0.03 vs. 1.08±0.13, P<0.01). The relative NF-κB mRNA expression level was lower in miR-181 mimic group than in mimic control group (0.13±0.03 vs. 0.51±0.06, P<0.01). The relative importin-α3 protein expression level was lower in miR-181 mimic group than in mimic control group (0.34±0.06 vs. 1.67±0.26, P<0.01). The relative NF-κB protein expression level was lower in miR-181 mimic group than in mimic control group (0.43±0.02 vs. 1.53±0.36, P<0.01).@*Conclusions@#Lower miR-181 expression but higher importin-α3 and its downstream NF-κB signaling are associated with ox-LDL induced vascular endothelial cell injury and up-regulation of miR-181 could alleviate ox-LDL induced vascular endothelial cell injury possibly via importin-α3/NF-κB pathway.
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Objective This retrospective study is to analysis the special medical conditions that most Chinese secondary hospitals are facing with,and to review the safeguards and pitfalls for arterial switch operations,in order to probe intothe feasibility of this procedure for Chinese secondary hospitals and provide our experiences to help other surgeons to avoid pitfalls on complex procedures.Methods Between January 2006 and December 2011,totally 21 newborns and infants with TGA/VSD and TGA/IVS underwent arterial switch operation.There were 15 males and 6 females.In the TGA/VSD group,there were 16 cases,ranging from 30 days to 1 year at surgeries,and weight from 3.4-8.5 kg with average of (5.33 ± 1.42) kg.In the TGA/IVS group,there were 5 cases,ranging from 13 days to 1 month at surgeries,and weight from 3.1-5.5 kg with average of (3.75 ± 1.17)kg.All patients underwent one stage of arterial switch operation.Routine follow-up checking points are set at discharging,3 months,half year and every year after operation.Results The early death rate is 9.5％ (2/21),and the reexploration rate is 9.5％ (2/21).In the TGA/VSD group,average cardiopulmonary bypass time is (151 ± 33) minuntes with the aortic crossclamp time is (1 19 ± 26) minutes.Ventilator support time is 24-159 hours,and the length of ICU stay is 3-17 days.1 case has residual VSD with the diameter less than 2 mm.The pulmonary flow velocity in 2 cases increase mildly to 2.0 m/s and 2.2 m/s,and another 2 cases increase severely to 3.1 m/s and 3.7 m/s.The aortic flow velocity in 3 cases increase to 2.0m/s.ECG instructs no case has myoinfarction signs.In the TGA/IVS group,average cardiopulmonary bypass time is (170 ± 52) minuntes with the aortic crossclamp time is (137 ± 48) minutes.Ventilator support time is 51-144 hours,and the length of ICU stay is 4-14 days;The pulmonary flow velocity in 2 cases increase mildly to 2.0 m/s.The aortic flow velocity in 1 cases increase to 2.0 m/s.ECG instructs no case has myoinfarction signs.Conclusion Unbalanced medical resources distribution causes significant differences between heart centers and the secondary hospitals in China,especially on the complex congenital heart diseases procedures.However,with relatively solid background on correction of the simple congenital heart diseases,the Chinese secondary hospitals can still perform arterial switch operation with satisfactory mortality and morbidity,and provide more prompt medical services for more population.
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ObjectiveTo investigate the effects of aliskiren on blood nitric oxide(NO) and bradykinin (BK) through analyzing the changes of NO, BK and non-dominant arm blood pressure before and after treatment of aliskiren and ramipril. MethodsThe chnical trial was conducted in 67 patients with essential hypertension. After a single-blind period of taking placebo orally once a day for 2 weeks, the patients were divided into different group in accordance with random table, and all patients were consecutively treated with drugs for 8 weeks. The trial uncovered showed that 17 patients were treated with ramipril (5 mg) in control group. Patients in trial group were given aliskiren and were assigned to three subgroups, 300 mg group (300 mg aliskiren, 16 cases), 150 mg group(150 mg aliskiren, 17 cases) and 75 mg group(75 mg aliskiren, 17 cases). The blood NO and BK before and after treatment in two groups were measured by enzyme linked immunosorbent assay and radioimmunoassay method. Non-dominant arm blood pressure was measured by calibration qualified mercury blood pressure instrument before and after treatment. Results The blood NO after treatment of aliskiren 8 weeks in trial group increased significantly than those before treatment [before treatment, the blood NO in 300 mg group, 150 mg group,75 mg group were (44.414 ±5.841 ), (43.496 ± 5.576), (41.037 ± 5.312) μ mol/L, after treatment they were(60.381 ± 6.756), (56.480 ±6.959), (53.766 ±7.276) μmol/L] (P <0.05). After treatment, non-dominant arm blood pressure decreased significantly in trial group (P < 0.05 ), but the blood BK had no significant defference before and after treatment (P >0.05). The blood NO and BK after treatment of ramipril 8 weeks in control group increased significantly than those before treatment [(57.286 ±6.431) μmol/L vs.(39.935 ±6.388)μ mol/L, (7.120 ± 1.015) μg/L vs.(5.232 ± 1.288) μg/L], and meanwhile non-dominant arm blood pressure decreased significantly(P <0.05). ConclusionsAliskiren and ramipril could increase the concentration of NO remarkably. Ramipril has strong effect in increasing the concentration of BK, but aliskiren hasn't effect on BK.