of DE-MRI and the specificity and accuracy of LDDSE were significantly lower than that of DE-MRI (P < 0. 05). Conclusion DE-MRI with high specificity and accuracy, potentially, is a valuable imaging method for the detection of viable myocardium.

Objective:To investigate the factors that affect the therapeutic effects of endoscopic radiofrequency ablation (Stretta procedure) on gastroesophageal reflux disease (GERD).Methods:Seventy patients with gastroesophageal reflux disease who received endoscopic radiofrequency ablation (Stretta procedure) treatment in Jinhua Hospital of Traditional Chinese Medicine from January 2016 to January 2019 were included in this study. They were divided into good prognosis group ( n = 57) and poor prognosis group ( n = 13) according to prognostic effects. The clinical data of all patients were collected, including gender, age, body mass index (BMI), course of disease, complications (hypertension, coronary heart disease, diabetes), smoking, drinking, Hamilton Depression Scale (HAMD) and Hamilton Anxiety Scale (HAMA) scores. Unconditional stepwise logistic regression was performed to analyze the factors that affect the therapeutic effects of Stretta procedure on GERD. Results:Univariate analysis results revealed that the proportion of patients aged ≥ 60 years with BMI ≥ 25 kg/m 2, alcohol abuse, HAMD score ≥ 8, HAMD score ≥ 7 was significantly higher in the poor prognosis group than in the good prognosis group ( χ2 = 9.574, 10.821, 22.575, 8.653, 10.586, 4.070, 8.653, all P < 0.05). Logistic regression analysis confirmed that female gender, age ≥ 60 years, BMI ≥ 25 kg/m 2, course of disease ≥ 5 years, alcohol abuse, HAMD score ≥ 8 and HAMA score ≥ 7 were the risk factors for poor prognosis of gastroesophageal reflux disease ( χ2 = 11.174, 6.023, 8.698, 5.972, 5.821, 7.485, 5.443, all P < 0.05). Consistency analysis revealed that gender, age, BMI, course of disease, alcohol abuse, HAMD score and HAMA score could be used to predict the therapeutic effects of endoscopic radiofrequency ablation (Stretta procedure) on GERD. Combined application of gender, age, BMI, course of disease, alcohol abuse, HAMD score and HAMA score exhibited higher consistency than a single application, 0.827 > 0.577, 0.533, 0.795, 0.547, 0.606, 0.434 and 0.547. Conclusion:There are many factors that affect the therapeutic effects of endoscopic radiofrequency ablation (Stretta procedure) on GERD, including gender, age, BMI, course of disease, alcohol abuse, HAMD score and HAMA score. This is of certain reference value for clinical treatment of GERD, and combined application of these influential factors has a high accuracy in the prediction of the therapeutic effects of Stretta procedure on GERD.

Arabidopsis thaliana is an important and long-established model species for plant molec-ular biology,genetics,epigenetics,and genomics.However,the latest version of reference genome still contains a significant number of missing segments.Here,we reported a high-quality and almost complete Col-0 genome assembly with two gaps(named Col-XJTU)by combining the Oxford Nanopore Technologies ultra-long reads,Pacific Biosciences high-fidelity long reads,and Hi-C data.The total genome assembly size is 133,725,193 bp,introducing 14.6 Mb of novel sequences compared to the TAIR1 0.1 reference genome.All five chromosomes of the Col-XJTU assembly are highly accurate with consensus quality(QV)scores＞60(ranging from 62 to 68),which are higher than those of the TAIR10.1 reference(ranging from 45 to 52).We completely resolved chro-mosome(Chr)3 and Chr5 in a telomere-to-telomere manner.Chr4 was completely resolved except the nucleolar organizing regions,which comprise long repetitive DNA fragments.The Chr1 cen-tromere(CEN1),reportedly around 9 Mb in length,is particularly challenging to assemble due to the presence of tens of thousands of CEN180 satellite repeats.Using the cutting-edge sequencing data and novel computational approaches,we assembled a 3.8-Mb-long CEN1 and a 3.5-Mb-long CEN2.We also investigated the structure and epigenetics of centromeres.Four clusters of CEN180 monomers were detected,and the centromere-specific histone H3-like protein(CENH3)exhibited a strong preference for CEN 180 Cluster 3.Moreover,we observed hypomethylation patterns in CENH3-enriched regions.We believe that this high-quality genome assembly,Col-XJTU,would serve as a valuable reference to better understand the global pattern of centromeric polymorphisms,as well as the genetic and epigenetic features in plants.