Objective The aim of this study was to evaluate the efficacy and side effects of sacubitril/valsartan in the treatment of patients with chronic kidney disease(CKD)at stage 5 with resistant hypertension,and to explore the cardiovascular benefits and security of medical in the patients.Methods Patients with CKD5 resistant hypertension diagnosed and treated in the First Affiliated Hospital of Guangxi Medical University from September 2020 to March 2022 were selected and divided into the observation group(treated with routine treatment of kidney disease at end-stage and sacubitril/valsartan)and control group(include droutine treatment of renal disease at end-stage and ACEI or ARB drugs)according to treatment strategy.The patients in both two groups were treated with adequate dialysis treatment and conventional drug treatment of renal disease at end-stage.The patients were followed up for at least 3 months,the clinical efficacy of three months after treated with sacubitril/valsartan was observed,and the efficacy indicators and security indicators and adverse cardiovascular events were observed,the occurrence of adverse effects during the period of drug use were compared with the control group.Results A total of 110 patients were included in this study and there were 55 cases in each group.There were no significant differences in gender,age,age of dialysis,etiology,dialysis mode and blood pressure between the two groups(P>0.05).The Systolic blood pressure(SBP),diastolic blood pressure(DBP),b-type urinary natriuretic peptide precursor(Pro-BNP)and cardiac function grade in the observation group after treatment was significantly decreased compared with before treatment.The left ventricular ejection fraction(LVEF)and the ratio of LVEF<50%in the observation group was significantly reduced after treatment(P<0.05).SBP,DBP and Pro-BNP decreased 3 months after treatment compared with the baseline before treatment,and improved significantly in the first month after treatment(P<0.05).The decrease of DBP and BNP before and after treatment was significantly different between the two groups,and the decrease of DBP and BNP was more significant in the observation group(P<0.05).The difference of LVEF and left ventricular end diastolic diameter(LVEDD)between the two groups before and after treatment was statistically significant,and the improvement was more obvious in the observation group(P<0.05).There were no significant differences in the safety indicators of serum potassium,estimated glomerular filtration rate(eGFR)and liver function between two groups before and after treatment(P>0.05).In terms of adverse reactions,only 1 case in the control group developed hyperkalemia within 3 months of follow-up,and no hypotension or other adverse reactions occurred in the two groups.Conclusions The treatment of patients with CKD stage 5 hypertension with sacubitril/valsartan has obvious cardiovascular benefits.Sacubitril/Valsartan has efficacy in lowering blood pressure,improving cardiac function and reducing volume load,with less adverse events and higher safety than control group.

Objective To investigate the clinical features of elderly patients with hepatitis B virus-related acute-on-chronic liver failure(HBV-ACLF)and the risk factors affecting the short-term prognosis of patients.Methods A retrospective analysis was performed for 417 patients with HBV-ACLF who were admitted to The General Hospital of Western Theater Command from January 2015 to January 2023,and related clinical data were collected,including general status,routine blood test results,biochemical parameters,and conditions of liver cirrhosis and decompensated events(ascites,hepatic encephalopathy,and their severities).The patients were followed up to observe 90-day survival.According to the age,the patients were divided into elderly group(with 106 patients aged≥60 years)and non-elderly group(with 311 patients aged＜60 years),and according to the 90-day survival,the elderly group were further divided into survival group with 41 patients and death/transplantation group with 65 patients.The independent-samples t test or the Mann-Whitney U test was used for comparison of quantitative data between two groups,and the chi-square test was used for comparison of qualitative data between two groups.The binary logistic regression analysis was used to determine the independent influencing factors for the risk of death within 90 days in elderly patients with HBV-ACLF,and a nomogram model was constructed for predicting the risk of death.The receiver operating characteristic(ROC)curve was used to investigate the value of the model in predicting the prognosis of HBV-ACLF patients in both the training set and the validation set.Calibration curve and decision curve were plotted for the models constructed in the training set and the validation set,and the model was assessed in terms of the degree of fitness and predicting benefits.Results The elderly patients had a significantly higher 90-day mortality rate than the non-elderly patients(P＜0.05),and compared with the non-elderly group,the elderly group had significantly higher incidence rate in female individuals,basic incidence rate of liver cirrhosis,incidence rate and grade of hepatic encephalopathy,incidence rate of ascites,and liver fibrosis markers(aspartate aminotransferase-to-platelet ratio index and fibrosis-4)(all P＜0.05),as well as significantly lower total cholesterol,high-density lipoprotein,albumin,alpha-fetoprotein,and lymphocytes(all P＜0.05).As for the elderly patients with HBV-ACLF,there were significant differences between the survival group and the death/transplantation group in total cholesterol,total bilirubin,international normalized ratio(INR),alpha-fetoprotein,platelet,creatinine,serum sodium,monocytes,and the incidence rate and grade of hepatic encephalopathy(all P＜0.05).In addition,the multivariate logistic regression analysis showed that INR(odds ratio[OR]=11.351,95%confidence interval[CI]:1.942-66.362,P＜0.05),monocyte count(OR=23.636,95%CI:1.388-402.529,P＜0.05),total bilirubin(OR=1.007,95%CI:1.001-1.013,P＜0.05),and platelet count(OR=0.968,95%CI:0.945-0.993,P＜0.05)were independent influencing factors for the 90-day prognosis of elderly patients with HBV-ACLF,and the nomogram model constructed based on these factors had a relatively high predictive value,with an area under the ROC curve of 0.915,a sensitivity of 88.0%,and a specificity of 86.7%.The nomogram model showed relatively high efficiency and degree of fitness in the verification set,and the decision curve suggested that the model had good benefits,with a higher prediction efficiency compared with the commonly used prediction models such as MELD score and COSSH-ACLF Ⅱ score.Conclusion Elderly HBV-ACLF patients may have a high short-term mortality rate due to the reductions in liver synthesis,reserve function,and regenerative ability and immune dysfunction.INR,monocyte count,total bilirubin,and platelet count have a relatively high value in predicting the risk of death in elderly HBV-ACLF patients,and the nomogram model constructed based on these factors has a relatively high prediction efficiency.

Objectives:To analyze the consistency of evaluating left ventricular hemodynamics (HDF) based on single plane and multi plane cine sequences of magnetic resonance mitral valve orifice.Methods:A prospective study was conducted on 48 healthy adults, and two methods were used to measure the mitral valve diameter and calculate HDF parameters. The first method was to measure the diameter of the mitral valve opening in the left ventricular three chamber cine sequence; The second method is to measure the mitral valve diameter using cine sequences of two chamber, three chamber, and four chamber hearts, and then take the average value. Paired t-tests were used to compare the differences in HDF measured by two methods, and Pearson correlation coefficient ( r), intra group correlation coefficient ( ICC), and Bland-Altman analysis were used to test the consistency and reproducibility of the two methods. Results:The root mean square (RMS) of longitudinal HDF calculated using single plane and multi plane mitral valve diameters were [(17.28±4.41)% vs (17.21±4.61)%] ( P=0.379) for the entire cardiac cycle, [(21.45±5.54)% vs (21.49±5.68)%] ( P=0.646) for systolic phase, and [(12.78±4.10)% vs (12.54±4.24)%] ( P=0.106) for diastolic phase, respectively. The difference in the calculation results of HDF parameters related to ventricular function was not statistically significant (all P>0.05), and there was good consistency ( r=0.924-0.996, ICC=0.924-0.995). The two HDF parameters related to atrial function were sensitive to the measurement method of mitral valve orifice diameter [RMS of longitudinal HDF during active atrial emptying: (3.26±1.51)% vs (3.32±1.55)%, P=0.006; longitudinal HDF pulse during active atrial emptying: (-2.60±1.28)% vs (-2.76±1.30)%, P<0.001]. Conclusions:The ventricular function related HDF parameters obtained from the analysis of mitral valve orifice diameter using single plane and multi plane methods have good consistency, and can be evaluated using relatively simple single plane methods for left ventricular HDF.

Objective:To establish a classification system for the repair band in the subchondral bone origination point in MRI for traumatic osteonecrosis of the femoral head (ONFH) and preliminarily explore the correlation between this classification and the progression of femoral head collapse.Methods:A retrospective analysis was conducted on 73 cases of traumatic ON-FH treated at the Quanzhou Orthopedic-traumatological hospital from January 2000 to December 2019. Among them, there were 46 males and 27 females with an average age of 34.9±8.3 years (range 19-55 years). Clinical and radiological data such as age, gender, side, fracture classification, reduction quality, JIC classification, and bone repair band (BRB) classification were recorded. The progression of traumatic ONFH was assessed using the ARCO staging system, with stages IIIA and IIIB defined as mild collapse and progressive collapse, respectively. The BRB classification was established based on MRI findings, and the inter- and intra-observer consistency of the BRB classification was analyzed using Kappa test. The correlation between the BRB classification and progressive femoral head collapse was analyzed using the Kaplan-Meier survival curve and binary variable Cox regression analysis.Results:According to the BRB classification, 73 cases were divided into type 1 with superficial lesion in 38.4%, type 2 with uncertain lesion in 21.9%, and type 3 with extensive lesion in 39.7%. The inter-observer consistency Kappa value for the BRB classification was 0.798, and the intra-observer consistency Kappa value was 0.896, indicating a high level of consistency. A follow-up of 73 cases (54.8±34.9 months, range 24-165 months) showed a significant correlation between the BRB classification and ARCO staging at the last follow-up (χ 2=37.556, P<0.001), with progression to stages IIIA and IIIB as follows: type 1 had 3 and 1 cases, type 2 had 4 and 1 cases, and type 3 had 14 and 12 cases, respectively. Using the occurrence of progressive collapse (stage IIIB) as the endpoint, the risk of progression to stage IIIB for type 2 was not statistically different from type 1 [ HR=1.766, 95% CI (0.465, 6.702), P=0.403]; the risk of progression to stage IIIB for type 3 was significantly higher than for type 1 [ HR=15.126, 95% CI (4.708, 48.592), P<0.001]. Conclusion:The BRB classification is closely related to the progression of traumatic ONFH and is an independent risk factor for predicting the occurrence of progressive collapse; this classification is helpful for early diagnosis and predicting the progression of collapse and treatment plan decision-making.

Objective To investigate the correlation between clinical characteristics of self-limited epilepsy in children with spines in the central temporal region(SeLECTS)and plasma levels of ammonia,25-hydroxyvitamin D[25(OH)D].Methods A total of 90 SeLECTS children admitted to Suzhou Hospital Affiliated to Anhui Medical University from September 2021 to October 2023 were selected as the case group,and 90 healthy children were included in the control group during the same period.The differences in plasma ammonia and serum 25(OH)D levels between the two groups were compared.The correlation between clinical characteristics of SeLECTS and plasma levels of ammonia,25(OH)D was retrospectively analyzed.Results Plasma ammonia concentration in case group was significantly higher than that in control group(P＜0.05).The level of 25(OH)D was significantly lower than that of control group(P＜0.05).There were statistically significant differences in plasma ammonia concentration among patients with different age,duration and frequency of SeLECTS(P＜0.05).There were statistically significant differences in serum 25(OH)D content among children with different age,frequency and season of SeLECTS(P＜0.05).The correlation between onset time,onset age and onset frequency was significant at 0.01 level.The correlation between plasma ammonia concentration and age of onset,time of onset and frequency of onset was significant at 0.05 level.At the same time,the correlation between 25(OH)D content and seizure time,seizure frequency and plasma ammonia concentration was significant at 0.05 level.The age of onset,frequency and duration of attacks were positively correlated with plasma ammonia levels of SeLECTS.Age of onset was positively correlated with 25(OH)D level,and frequency of onset was negatively correlated with 25(OH)D level.Conclusion SeLECTS attacks are significantly correlated with plasma ammonia and serum 25(OH)D levels,and both elevated plasma ammonia levels and decreased 25(OH)D levels increase the risk of SeLECTS attacks.Therefore,detection of plasma ammonia and serum 25(OH)D levels in children can provide evidence for prevention,disease assessment,diagnosis and treatment of SeLECTS.

Objective:To investigate the clinical and cardiac magnetic resonance (CMR) characteristics of heart involvement in patients with Fabry disease (AFD).Methods:From January 2018 to March 2021, eight AFD patients [3 males and 5 females, mean age (50±11) years old, range 26-60 years old] confirmed by genetic testing or pathology in Fuwai Hospital were retrospectively included in this study. At the same time, sixteen patients with hypertrophic cardiomyopathy (HCM) [6 males and 10 females, mean age (46±15) years old] and 16 healthy individuals [6 males and 10 females, mean age (51±11) years old] were included as controls. The clinical baseline data and CMR data of the patients were collected and analyzed. The CMR data were analyzed using the software CVI42, with the corresponding parameters automatically generated. One-way ANOVA or Kruskal-Wallis test was used to compare the differences in the parameters among the three groups. Independent-samples t test, Fisher precise test or Mann-Whitney U test were used for the comparison between each two groups. Results:Statistically significant difference was found in renal insufficiency between the HCM group and the AFD group; No other significant difference was found in other clinical factors and ECG results (all P>0.05). CMR results showed that in the AFD group, there were 5 cases with symmetric or roughly symmetric hypertrophy, and 3 with asymmetric hypertrophy. The late gadolinium enhancement (LGE) showed myocardial enhancement in 5 patients, mainly presenting as multiple intermural enhancement, and partially as local subendocardial enhancement. In the HCM group, fourteen cases suffered mainly asymmetric ventricular septal thickening, with or without thickening of other parts of left ventricular wall; and 2 cases had thickening of middle and distal part of the left ventricle. The LGE showed myocardial enhancement in 14 patients, which manifested as focal or patchy enhancement in hypertrophic myocardium, including focal enhancement in the right ventricular insertion of ventricular septum (more common) and subendocardial enhancement in the middle and far segments of left ventricle. Statistically significant difference was found in the differences between the left atrial anterior posterior diameter, the maximum wall thickness of left ventricular, the left ventricular myocardial mass index (LVMI) and the native T 1 value among the three groups (all P<0.001). However, there was no statistically significant difference in the left atrial anterior posterior diameter and the maximum wall thickness of left ventricular between AFD group and HCM group ( P>0.05). The LVMI in AFD group was higher than that in healthy group and HCM group (all P<0.05). Significant difference was found in the native T 1 value among the three groups, with the native T 1 value of the AFD group [(1 177.4±46.0) ms] was significantly lower than that of the healthy group [(1 244.5±34.3) ms] and the HCM group [(1 278.8±41.6) ms], with ( F=13.10, P<0.001). Conclusions:The clinical characteristics of AFD and HCM are quite similar. When AFD is suspected, CMR imaging should be the first choice for imaging examination. Especially, T 1 mapping imaging can provide important information for the diagnosis of AFD.

Objective: To synthesize the mammalian target of sirolimus(mTOR)inhibitor Torin2 and optimize the synthetic process. Methods: Starting from p-bromoaniline, the target product was obtained through amino bonding, cyclization, chlorination, bonding with 3-aminotoluene ring, oxidation, cyclization and Suzuki reaction. The synthetic conditions for the key intermediates 3 and 8 as well as the final product Torin2 were optimized by the orthogonal experiment. Results and Conclusion: The structures of the intermediates and the target compound were confirmed by MS and 1H NMR data. The total yield of the target compound synthesis increased from 3% to 18%, and no column chromatography was required for the target compound separation and purification, which thus makes it suitable for industrial production.

Objective: In view of the difficulty of the shortage of new coronavirus nucleal acid test in the early COVID-19 outbreak, to explore the application value of chest CT in screening COVID-19 patients. Methods: Retrospective analysis was performed on the data of patients with fever who received chest CT and new coronavirus nucleal acid test during January 25, 2020 to February 2, 2020 in Zhongnan Hospital of Wuhan University. A total of 587 patients were enrolled, including 290 males and 297 females, aged from 11.0 to 96.0 (51.3±17.1) years old. Take the nucleic acid test results as the gold standard, the sensitivity, specificity and rate of missed diagnosis of CT screening COVID-19 were calculated. Results: Among the 587 patients, there were 433 positive cases (73.8%, 433/587) and 154 negative cases (26.2%, 154/587) of novel coronavirus nucleic acid test. Using CT screening, 494 cases (84.2%, 494/587) were positive and 93 cases (15.8%, 93/587) were negative. The sensitivity of CT screening COVID-19 was 97.7% (423/433), specificity was 53.9% (83/154) and rate of missed diagnosis was 2.3% (10/433). Conclusions In the early COVID-19 outbreak, CT screening has the advantages of high sensitivity and low rate of missed diagnosis of COVID-19, which can compensate for the shortage of new coronavirus nucleal acid test and can be used as the basis for rapid screening for early prevention and control of COVID-19 outbreak.

Objective To study the application of BNP,NT-proBNP and ST2 in diagnosis of heart failure (HF).Methods Ninety-seven HF patients admitted to our hospital served as a HF group and 61 HF-free patients served as a control group.The patients in HF group were further divided in to class Ⅱ group (n=32),class Ⅲ group (n=36) and class Ⅳ group (n=29) according to their cardiac function in NYHA classification.The serum ST2,BNP and NT-proBNP levels were measured and their value in diagnosis of HF was analyzed.Results The serum BNP,NT-proBNP and ST2 levels were significantly higher in HF group than in control group (396.0 ng/L vs 39.4 ng/L,P＜0.01;1825.0 ng/L vs 215.0 ng/L,P＜0.01;56.8 μg/L vs 25.4 μg/L,P＜0.01),which increased with the increasing cardiac function in NYHA classification (P＜0.01).The area under the ROC curve for BNP,NT-proBNP,ST2,combined NT-proBNP and ST2 was 0.874,0.891,0.842,0.905 respectively for the diagnosis of HF.Conclusion BNP,NT-proBNP and ST2,3 new biomarkers,can improve the diagnosis of HF.

To evaluate the correlation of the serum uric acid and free fatty acid (FFA) levels in Shandong coastal residents. To investigate the correlation between serum uric acid and FFA based on 3860 individuals who have been long staying in Qingdao, Yantai, Weihai, Rizhao with a randomized, stratified cluster sampling method. According to FFA quartile, subjects were divided into four groups: group Q1 of 908, group Q21016, group Q3958, and group Q4978 cases. The prevalence of hyperuricemia and serum uric acid levels increased with the increasing FFA quartile. Compared with Q1, Q2, and Q3 groups, the prevalence of hyperuricemia in Q4 group and the increase of serum uric acid were statistically significant(P<0. 05). And in the group Q4, hyperuricemia prevalence is twice as the group A. According to the serum uric acid level, subjects were divided into the normal uric acid group(n=3331) and the hyperuricemia group ( n = 529). In the hyperuricemia group, their systolic blood pressure, diastolic blood pressure, waist circumference, hip circumference, triglycerides, total cholesterol, low density lipoprotein-cholesterol (LDL-C), glucose, uric acid, FFA, body mass index etc. were significantly higher than those of the normal uric acid group (all P<0. 01), while the high density lipoprotein-cholesterol ( HDL-C), cystatin, glomerular filtration rate (eGFR) are significantly lower than those of the normal uric acid group( all P<0. 01). Serum uric acid levels are positively correlated with systolic and diastolic blood pressures, waist and hip circumferences, triglycerides, total cholesterol, LDL-C, FFA, blood glucose, body mass index (all P<0. 01); and negatively correlated with eGFR (P<0. 01). Multiple regression analysis showed that systolic blood pressure, FFA, total cholesterol, triglycerides, LDL-C, blood glucose, body mass index, eGFR were factors influencing serum uric acid independently. Multivariate binary logistic regression analysis showed that systolic blood pressure, waist circumference, total cholesterol, blood glucose, and FFA are independent risk factors to predict hyperuricemia onset while eGFR is a protective factor. Serum uric acid level is closely related to the free fatty acid, and FFA seems to be involved in the development and progression of hyperuricemia.