Background Left atrium size was reported as a marker for ventricular diastolic dysfunction and predictive risk factors for cardiovascular disease.Objective To analyze the relations between left atrial(LA) size and left ventricular(LV) diastolic function echocardiographically in rabbit model with LV dysfunction while with normal LVEF.Methods LV pressure overloaded animal model was established by abdominal aorta constriction in 18 New-Zealand rabbits(model group) which developed LVH with normal EF with 8 healthy rabbits as normal controls.LA dimension and volume(LAD,LAV),left ventricular dimension(LVD) and wall thickness(IVST,PWT),Transmitral inflow E and A,and mitral annulus velocities Ea and Aa were determined by echocardiography.LVEDP was measured within 24 hours after echo examination by catheterization.Results ①Increased LVD,IVST,PWT and LA size were found in model group(P

Objective To investigate the protective effects and its mechanism of Jianwei Yuyang Granule (JYG) on gastric mucosa of experimental gastric ulcer rats. Methods The model of gastric ulcer was established by the modified Okabe’ s method.The ulcer index was recorded, and the expression of IL- 1? and bFGF was determined with histochemistry. Results The ulcer index of JYG group was significantly lower than that of model group and famotidine group (P

Objective To study the effects of Jianwei Yuyang granule on TGF-? 1 expression in the healing process of rat gastric ulcer induced by acetic acid. Methods Animal model of gastric ulcer in rat was set up with the modified Okabe's method, and the TGF-? 1 expression in the gastric ulcerated tissues was detected by immunohistochemical technique. Results TGF-? 1 expression in gastric ulcerated tissues during the healing process in Jianwei Yuyang group significantly increased compared with the normal, model and famotidine treatment groups. Conclusion TGF-? 1 expression in gastric ulcerated tissues induced by acetic acid during the healing process significantly increased,especially in Jianwei Yuyang group. Jianwei Yuyang granule may accelerate gastric ulcer healing by increasing TGF-? 1 expression in gastric ulcerated tissues.

Objective To identify disease-causing mutations in a large panel of Chinese Han patients with hereditary spastic paraplegia(HSP).Methods The coding sequence of the SPG11 gene in the probands of 28 families with ARHSP and 14 sporadic HSP patients was analyzed,and the identified changes in the sequence were tested to exclude being a benign polymorphism by sequencing 200 chromosomes from normal controls.Results Identified 13 causative mutations in SPG11 gene in 7 ARHSP and 3 sporadic HSP The mutations were:c.5977C>T/p.Q1993X、c.4668T>A/p.Y1556X、c.6898_6899delCT/p.L2300AfsX23.38、c.3719_3720delTA/p.11240VfsX263、c.733_734delAT/p.M245VfsX246、c.7088_7089insATTA/p.Y2363X、c.2163_2164insT/p.1722Yfsx731、c.7101-7102insT/p.K2368X、c.6790_6791insC/p.12264PfsX2339、c.654_655delinsG/p.S218RfsX219、c.7151+4_7151+7delAGTA/p.K2384fsX2386、c.6355-21_6355-18delTCT、c.3004C>T/p.G1002X.Among them,12 were novel mutations.The rate of mutation in the SPG11 gene was 25.0%(7/28)in ARHSP,6/6 in ARHSP-TCC and 3/14 in sporadic cases.Conclusions In Chinese Han population,patients with ARHSP-TCC and sporadic HSP-TCC should be screened for SPG11.Sequencing of the SPG11 gene in these patients with is valuable for clinical diagnostic testing.

OBJECTIVETo study the single-nucleotide substitution (c.-16C to T) of the PURATROPHIN-1 gene in spinocerebellar ataxia (SCA) patients in China.

METHODSThe single-nucleotide substitution (c.-16C to T) of the PURATROPHIN-1 gene was detected by PCR, digested with EcoN I, separated on 8% polyacrylamide gel in 68 probands of autosomal dominant SCA families and 119 sporadic SCA patients, who had been excluded CAG/CAA repeat expansion at the SCA1, 2, 3, 6, 7, 17 and dentatorubral-pallidolluysian atrophy (DRPLA) loci. The results were confirmed in four patients by direct sequencing.

RESULTSThe single-nucleotide substitution (c.-16C to T) of the PURATROPHIN-1 gene was not identified in authors' cohort.

CONCLUSIONThe mutation of c.-16C to T of the PURATROPHIN-1 gene might be rare in SCA patients in China.

Asian Continental Ancestry Group ; genetics ; Cohort Studies ; Guanine Nucleotide Exchange Factors ; genetics ; Humans ; Mutation ; Polymerase Chain Reaction ; Polymorphism, Single Nucleotide ; Spectrin ; genetics ; Spinocerebellar Ataxias ; genetics

Objective To investigate the efficacy and safety of Shuo Tong ureteroscopy in the treatment of upper ureteric stones.Methods The data of 832 patients,who underwent Shuo Tong ureteroscopy combined with holmium laser for the treatment of upper ureteric stones were collected between July 2014 and February 2017.The patients accepted general anesthesia under lithotomy position.After dilating the ureter,a ureteral access sheath was inserted along the guide wire.Finally,stones were broken and clean up by Shuo Tong ureteroscope.According to the stone size,823 patients were divided into ≤2.0 cm group (n=112,13.6％),2.1-3.0 cm group (n =395,48.0％),3.1-4.0 cm group (n =257,31.2％),＞ 4.0 cm group (n =59,7.2％)The stone free rate(SFR) and post-operative complications were observed.Results Among 983 operations,663 cases accepted one-stage operations and 160 cases accepted second stage operations.the operative time and postoperative hospital stay were 23-145 min(mean 74.8 ± 35.3) and 1-5 days(mean 1.9 ±0.8),respectively.The SFR in the first day and one month after operation was 75.6％ and 83.8％,respectively.The stone free rate in each group were 89.3％,82.5％,61.1％,52.5％ at first day after operation respectively(P ＜ 0.05).While,the SFR after one month were 95.5％,87.6％,72.0％,61.0％ in each group,respectively(P ＜ 0.05).Fever rate after operation was 11.1％,ureteral injury rate was 1.9％,severe hematuria rate was 0.6％,stone street formation rate was 1.2％,perirenal hematoma rate was 0.4％.All patients were improved after conventional treatment.Conclusion Shuo Tong ureteroscopy is a safe treatment with high stone free rate for upper ureteric stones.

Objective:To evaluate the clinical and echocardiographic characteristics of valvular involvement in SLE patients and its predictive value for valvular outcome.Methods:A retrospective study included 58 adult SLE patients with valvular involvement diagnosed for the first time by echocardiography in the First Affiliated Hospital of Wenzhou Medical University. According to gender and age, 1∶2 SLE patients without valvular involvement were selected as the control group. Clinical and echocardiographic data within 24 hours after initial admission were collected. The predictive factors were analyzed using cox parametric regression analysis.Results:①Among 58 patients,significant valve lesions were detected by echocardiography in 50 and presented as valve thickening with regurgitation. The mitral valve was the most commonly affected, followed by the aortic valves. ②Compared with the non-valvular involvement group, the percent of CRP, SLC-R, IgA、aCL-IgG were higher in the valvular involvement group [CRP:60.3% vs 30.4%, χ2=10.54, P=0.001; SLC-R: 63.8% vs 19.8%, χ2=33.08, P<0.001; IgA:27.6% vs 22.4%, χ2=16.04, P<0.001; aCL-IgG: 27.6% vs 2.6%, χ2=24.84, P<0.001]. ③Cox parametric regression analysis showed that CRP [ HR (95% CI)=2.641(1.499, 4.654), P=0.001,SLC-R HR(95% CI)=3.234(11.776, 5.888), P<0.001], and aCL-IgG[ HR(95% CI)=2.166 (1.148, 4.087) , P=0.017] were independent predictors of valvular involvement. Conclusion:SLE patients with increased levels of CRP、SLC-R、IgA and aCL-IgG have a high risk of valvular involvement. CRP、SLC-R and aCL-IgG are independent predictors of valvular involvement.

Objective To investigate the value of echocardiography in assessing right ventricular function of primary light-chain amyloidosis(AL)-cardiac amyloidosis(CA)patients.Methods A total of 25 patients biopsy diagnosed as AL-CA,who were admitted to the First Affiliated Hospital of Wenzhou Medical University from January 2018 to December 2021,were enrolled in this study as amyloidosis group.And 25 heathy volunteers were set as control group.The routine right ventricular morphology and functional parameters were acquired by standard echocardiography.Right ventricular global longitudinal strain(RVGLS)and right ventricular free wall longitudinal strain(RVfwLS)were obtained by two-dimensional speckle tracking imagine.Tricuspid annular plane systolic excursion(TAPSE)/pulmonary artery systolic pressure(PASP),RVGLS/PASP,RVfwLS/PASP ratio were calculated as the noninvasively parameters of right ventricular-pulmonary artery coupling.Results ①Compared with control group,patients in amyloidosis group showed significantly larger right heart size,and significantly thicker right ventricular free wall[(7.16±1.84)mm vs.(3.76±0.66)mm],the difference was statistically significant(P<0.001).②Compared with control group,RVGLS[(17.43±2.45)%vs.(23.22±3.73)%]and RVfwLS[(18.44±2.10)%vs.(22.62±3.64)%]were significantly impaired in amyloidosis group,the difference was statistically significant(P<0.001).The ratios of TAPSE/PASP,RVGLS/PASP,RVfwLS/PASP were found to be lower in amyloidosis group,the difference was statistically significant(P<0.001).③TAPSE/PASP showed mild correlations with N-terminal brain natriuretic peptide precursor(NT-proBNP),highly sensitive T cardiac troponin(hs-TNT)(r=0.45 and 0.40)there were statistically significant(P<0.05).Conclusion Echocardiography can effectively evaluate the right heart function impairment in AL-CA patients,providing valuable information for a deeper understanding of the pathological and physiological mechanisms of the disease.

Novel coronavirus Omicron variant infection can cause severe illness and even death in certain populations. Omicron variant infection may lead to systemic inflammatory response, coagulation disorder, multi-organ dysfunction and other pathophysiological changes, which are different from other Novel coronavirus variants to a certain extent, so therapeutic strategies should not be the same. The National Medical Center for Major Public Health Events invited experts in fields of infectious diseases, respiratory medicine, intensive care, pediatrics and fever clinic to develop this quick guideline based on the current best evidence and extensive clinical practices. This quick guideline aims to standardize the diagnosis and treatment of novel coronavirus Omicron infection, and to improve the disease management abilities of clinicians.