Objective To investigate the feasibility of a "pericardial lining" modified Bentall procedure for the treatment of patients with aortic root aneurysm. Methods This was a retrospective study that consecutively enrolled patients treated at the Affiliated Suzhou Hospital of Nanjing Medical University, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, and the First People's Hospital of Guangyuan from January 2023 to February 2024. Preoperative clinical data, imaging findings (including echocardiography and CT scans of the aortic root and the entire aorta), details of coronary artery management, surgical outcomes, and postoperative follow-up results were collected. All patients underwent the "pericardial lining" modified Bentall procedure: the aortic valve was replaced, and an autologous pericardial patch was divided into three equal leaflets based on the circumference of the aortic annulus measured by a valve sizer. These leaflets were then sutured to the aortic annulus. Fenestrations were created in two of the pericardial leaflets for anastomosis with the left and right coronary ostia. The pericardial leaflets were sutured to the wall of the aortic sinuses to form an integrated structure, thereby narrowing the sinus portion. A prosthetic vascular graft was anastomosed to the proximal and distal aorta, and no aortic root-to-right atrium shunt was created. Results A total of 5 patients, aged 37 to 68 years, were included. The preoperative Society of Thoracic Surgeons (STS) risk scores ranged from 2.8% to 3.9%. The diameter of the ascending aorta was 40-73 mm, the left ventricular end-diastolic diameter (LVEDD) was 45-71 mm, and the left ventricular ejection fraction (LVEF) was 47%-64%. Intraoperatively, the aortic cross-clamp time ranged from 85 to 180 min, and the cardiopulmonary bypass time ranged from 110 to 302 min. Postoperative follow-up echocardiography revealed that the ascending aortic diameter was 27-35 mm, LVEDD was 39-57 mm, and LVEF was 43%-61%. All surgeries were completed successfully with satisfactory immediate outcomes and no intraoperative complications. During the follow-up period, there was no mortality or reoperation. Conclusion For patients with aortic root aneurysm, the "pericardial lining" modified Bentall procedure yields satisfactory preliminary results, and the technique is demonstrated to be feasible.

AIM:To predict the mechanism of Sanguis draconis flavones(SDF)in the prevention and treat-ment of myocardial ischemia reperfusion injury(MIRI)based on network pharmacology and molecular docking methods.METHODS:The main chemical constituents of SDF were collected through literature search,and the targets of key con-stituents were screened by using the SwissTargetPrediction and TargetNet databases.Disease targets were also screened based on GeneCards,OMIM,TTD and PharmGkb databases,then targets were intersected with Cytoscape to construct the"drug-key constituent-target"network diagram,and the core target was obtained through visualization and analysis by Cytoscape software.Gene Ontology(GO)functional enrichment and Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway enrichment analyses were analyzed by the Metascape platform.By utilizing AutoDock Vina software and Pymol,molecular docking between core compounds and core targets was carried out.Further,animal experiments were performed to explore the pharmacodynamic mechanism of SDF.RESULTS:The active constituents of SDF included loureirin B and loureirin A,which were mapped to 391 targets.A total of 3 096 MIRI disease targets were obtained from the database,af-ter intersection,172 intersection targets were obtained,and 56 core targets were acquired through analysis.The core relat-ed pathways included the cancer pathway and cell death signaling pathway.The results of molecular docking verified the strong binding activity between key constituents and key targets.Animal experiments demonstrated that SDF effectively prevented and treated MIRI,significantly inhibited the arachidonic acid 15-lipoxygenase(ALOX15)mRNA and protein expression,and reduced the myocardial infarction size after MIRI.CONCLUSION:SDF may play a positive role in the treatment of MIRI,which may be related to the regulation of the ALOX15 factor.

Tooth enamel is prone to be attacked by injurious factors, leading to a de/remineralization imbalance. To repair demineralized enamel and prevent pulp inflammation caused by biofilm accumulation, measures are needed to promote remineralization and inhibit bacterial adhesion on the tooth surface. An innovative material, poly (aspartic acid)-polyethylene glycol (PASP-PEG), was designed and synthesized to construct a mineralizing and anti-adhesive surface that could be applied to repair demineralized enamel. A cytotoxicity assay revealed the low cytotoxicity of synthesized PASP-PEG. Adsorption results demonstrated that PASP-PEG possesses a high binding affinity to the hydroxyapatite (HA)/tooth surface. In vitro experiments and scanning electron microscopy (SEM) demonstrated a strong capacity of PASP-PEG to induce in situ remineralization and direct the oriented growth of apatite nanocrystals. Energy dispersive X-ray spectroscopy (EDS), X-ray diffraction analysis (XRD) and Vickers hardness tests demonstrated that minerals induced by PASP-PEG were consistent with healthy enamel in Ca/P ratio, crystal form and surface micro-hardness. Contact angle tests and bacterial adhesion experiments demonstrated that PASP-PEG yielded a strong anti-adhesive effect. In summary, PASP-PEG could achieve dual effects for enamel repair and anti-adhesion of bacteria, thereby widening its application in enamel repair.

Objective To explore the effects of α-keto acid combined with low protein diet on oxidative stress and electrolyte levels in patients with diabetic nephropathy. Methods Ninety-eight cases with type 2 diabetic nephropathy were randomLy divided into the treatment group(low-protein diet with α-keto acid 1 tablet,n=58) and the control group(normal protein intake,n=40). The 24 h urinary albumin excretion rate,glomerular filtra-tion rate ,serum oxidative stress (SOD ,MDA ,AOPPs) and electrolyte levels were measured before and after treatment. Results After 24 weeks of treatment,the 24 h urinary albumin excretion rate of DN patients in the treatment group was significantly lower than that before treatment and the control group (P < 0.05). However, there was no significant change in the glomerular filtration rate of the patients. Compared with the control group , the serum SOD activity of DN patients was significantly increased and the levels of MDA and AOPPs were decreased(P < 0.05)after 24 weeks of treatment. Simultaneously,the levels of serum potassium and phosphorus in the treatment group was decreased ,while the levels of calcium and magnesium were improved (P < 0.05). Conclusion α-keto acid combined with low protein diet can significantly reduce the urinary albumin excretion rate,improve the body′s antioxidant activity,and maintain serum electrolytes balance.

This article is aimed to provide a method for the simultaneous analysis of five heavy metals, including Cu, As, Pb, Cd, and Hg, in Chuanxiong Rhizoma and Gastrodiae Rhizoma through ICP-MS. Five heavy metals were determined by an inductively coupled plasma-mass spectrometry method after microwave-assisted digestion. The linear correlation coefficients were all better than 0.999. The lowest limits of quantification for all target elements were 0.003 0.134 ug·L-1, while the recovery values ranged from 80.04% 118.34%. This method was accurate, convenient, rapid, and highly sensitive, and can be applied to determine five heavy metals, including Cu, As, Pb, Cd, and Hg in Chuanxiong Rhizoma and Gastrodiae Rhizoma.

This study was aimed to establish the determination method of nineorganic solvent residues of macrop-orous resin. Headspace capillary gas chromatography (GC) was used in the content determination of hexane, benzene, methyl-benzene, o-xylene, m-xylene, p-xylene, styrene, diethyl-benzene and divinyl-benzene of macroporousresin residues in Ginkgo leaf tablets. The results showed that ninemacroporous resin residues in Ginkgo leaf tablets were completely separated. The calibration curves were in good linearity (r=0.9992-0.9998). The average recoveries were 80%-110%. It was concluded that themethod was accurate, quick, and sensitive, which can be used to determine the macroporous resin residues in Ginkgo leaf tablets.

Objective To observe and assess the effect of different dosages of aspirin on inflammatory biomarkers, hemorheology (platelet aggregation rate) and clinical prognosis in patients with acute coronary syndrome ( ACS). Methods ACS patients were randomly assigned to receive different dosages of aspirin treatment orally. Patients in group A,B and C took 100 mg, 500 mg and 1000 mg of aspirin per day respectively. They were treated and followed-up for 1 year. High-sensitivity C-reactive protein ( hsCRP) , IL-6, tumor necrosis TNFot and platelet aggregation rate were examined and major adverse cardiac events( MACE) were recorded. Results A total of 312 patients with ACS were enrolled in the study. The baseline characteristics of the three groups were not different with respect to age, gender, cardiovascular risk profile, level of inflammatory biomarkers and concomitant treatment before and after randomization. The levels of baseline serum hsCRP, IL-6 and TNFa were higher in subjects of the study as compared with normal reference value (P<0. 05, <0. 05, <0. 01) and they decreased significantly after therapy with 3 different doses of aspirin (detected at 30 days, 6 months and 12 months, P <0. 001 ) , but there were no significant differences among the three groups( P >0. 05) . Rehospitalization , MACE and the change of platelet aggregation ratio were not significantly different among the three groups. The incidence of gastrointestinal complaints was significantly higher in groups B and C than in group A ( P < 0. 05 ). Conclusions The levels of serum inflammatory biomarker increase in patients with ACS. Aspirin therapy may decrease the level of inflammatory markers significantly, but increasing the dosage of aspirin from 100 mg to 1000 mg daily does not decrease the level of inflammatory markers and the clinical MACEs further. However, the incidence of gastrointestinal complaints increase significantly with the increase of aspirin dosage.

AIM: Gene transduction with a recombined murine stem cell retroviral vector has been investigated to find an effective way of gene transduction and to offer theory and experimental basis for the recombined murine stem cell retroviral vector used for gene transduction. METHODS: 1. Construction of retrovirus vector: EC1-4 gene (repeats 1-4 of cadherin-5 extracellular domain) and mutant (Ser 222A) MEK1 gene were cloned into retrovirus vector pMSCV after cut by Bgl Ⅱ and EcoR 1 restriction endonuclease. 2. Obtaining CD41 + cells and cell culture: Cells expressing CD34 + from cord blood were isolated. The inducement of cells expressing CD41 from CD34 + cells was performed by using TPO and cells CD41 + were selected by FACS. NIH 3T3 cells were cultured in high sugar DMEM medium and U937 in RPMI 1640 medium. UT7 cells which is cytokine-dependent cell line were grown in Iscove's modified Dulbeco's medium supplemented by GM-CSF. 3. Determination of viral titers: Retroviral vectors were transferred to packaging cell line 293. Retroviral containing supenatant was collected after transfection. The viral titers was tested on infection of NIH 3T3 cells by FACS analysis. 4. Western blot: Transduced CD41 +,UT7,U937 and MDA-MB-435 cells were analyzed by western blot to examine expression of transduced genes. RESULTS: A packaging cell line 293 produces high-titer MEK1 pMSCV retroviruses (3.1?10 7) and EC1-4 pMSCV retroviruses (1.0?10 8). With 8-folds dilution retroviruses,60.73% GFP positive cells have been obtained in MEK1 pMSCV transduced UT7 cells,72.56% in U937 cells and 30.57% in CD41 + cells,respectively. GFP positive cells have reached up 97.54 % in EC1-4 pMSCV transducted MDA-MB-435 cells. Phosphorylated MEK1 has been decreased in experiment group when TPO has stimulated CD41 + and UT7 cells or serum has stimulated U973 cells. This indicates that is a dominant negative effect of mutation MEK gene. EC1-4 gene transduced MDA-MB-435 cells have expressed EC1-4. CONCLUSION: The recombined murine stem cell retrovirus can effectively mediate gene transduction of CD41 +,UT7,U937 and MDA-MB-435 cells,and transduced genes can be stably expressed.