[Influencing mechanism of stand age to the accumulation of microbial residue carbon in the plantations].

Clarifying the accumulation pattern of soil microbial residue carbon and its contribution to soil organic carbon (SOC) across stand age is helpful to understand the mechanism underlying soil carbon cycling. In this study, we analyzed the differences of amino sugar content, physicochemical properties and microbial composition in surface soil (0-10 cm) in young (6 a), middle-aged (13 a), near-mature (29 a), mature (38 a) and over-mature (57 a) plantations of subtropical China, quantified the microbial residue carbon content and its contribution to SOC, and discussed the mechanism. The results showed that SOC, total nitrogen, amorphous iron oxide and leucine aminopeptidase contents in the middle-aged plantation were significantly lower than those in the mature plantation.

Evaluation of the safety and efficacy of a novel Anatomical classification and dUal anchoRing theory to Optimize the tavR strategy for pure severe Aortic regurgitation (AURORA): a prospective cohort study.

Background: Success rate of transcatheter aortic valve replacement (TAVR) in aortic regurgitation (AR) patients is relatively low on account of the absence of calcified anchoring structures. Morphological classification and corresponding TAVR strategies for AR are lacking yet.

Methods: The AURORA study is a prospective, multicenter, single-arm cohort study to evaluate the safety and efficacy of transfemoral TAVR for severe AR in patients with high or prohibitive risk for surgery.

Based on SEER Database: Population Distribution, Survival Analysis, and Prognostic Factors of Organ Metastasis of Lung Large Cell Neuroendocrine Carcinoma.

Background: The incidence rate of lung large cell neuroendocrine carcinoma (LCNEC) in lung cancer is low, but the malignancy is high and the prognosis is poor. We used the Surveillance, Epidemiology, and End Results (SEER) database to determine the population distribution of organ metastasis in LCNEC, conduct survival analysis, judge prognostic factors, and provide direction for follow-up diagnosis and treatment.

Materials And Methods: By logging into the SEER database, the data of lung LCNEC were retrieved and the target population was selected.

Ecosystem service value effects of the Three Gorges Reservoir Area land use transformation under the perspective of "production-living-ecological" space.

In the context of rapid socio-economic development, eliciting "production-living-ecological" space (PLES) changes with corresponding ecosystem service benefits is critical for national land optimization and regional sustainability. Based on land use data obtained via remote sensing of 1980, 2000, 2018, and from a PLES perspective, we applied geo-information Tupu to depict land use transformations in the Three Gorges Reservoir Area (TGRA) from 1980 to 2018. The ecological/environmental effects of land use transformation were also explored based on the contribution value of ecosystem service.

Prevention of contrast-induced nephropathy by adequate hydration combined with isosorbide dinitrate for patients with renal insufficiency and congestive heart failure.

Background: Adequate hydration remains the mainstay of contrast-induced nephropathy prevention, and nitrates could reduce cardiac preload.

Hypothesis: This study aimed to explore the adequate hydration with nitrates for patients with chronic kidney disease (CKD) and congestive heart failure (CHF) to reduce the risk of contrast-induced nephropathy (CIN) and at the same time avoid the acute heart failure.

Methods: Three hundred and ninty-four consecutive patients with CKD and CHF undergoing coronary procedures were randomized to either adequate hydration with nitrates (n = 196) or to routine hydration (control group; n = 198).

[Effects of elevated ozone on Pinus armandii growth: a simulation study with open-top chamber].

By using open-top chamber (OTC) and the techniques of dendrochronology, this paper studied the growth of Pinus armandii under elevated ozone, and explored the evolution dynamics and adaptation mechanisms of typical forest ecosystems to ozone enrichment. Elevated ozone inhibited the stem growth of P. armandii significantly, with the annual growth of the stem length and diameter reduced by 35.

Evaluation of neointimal coverage in patients with coronary artery aneurysm formation after drug-eluting stent implantation by optical coherence tomography.

Background: The vessel healing in patients with coronary artery aneurysms (CAA) that form after drug-eluting stent (DES) implantation is not clear. This study aims to assess the vessel healing in patients with CAA formation after DES implanation.

Methods: From June 2008 to August 2011, follow-up coronary angiography was conducted on 1160 patients who underwent percutaneous coronary intervention (PCI).

Thrombosis and morphology of plaque rupture using optical coherence tomography.

Background: Thrombosis following plaque rupture is the main cause of acute coronary syndrome, but not all plaque ruptures lead to thrombosis. There are limited in vivo data on the relationship between the morphology of ruptured plaque and thrombosis.

Methods: We used optical coherence tomography (OCT) to investigate the morphology of plaque rupture and its relation to coronary artery thrombosis in patients with coronary heart disease.

[Ex vivo assessment of coronary lesions by optical coherence tomography and intravascular ultrasound in comparison with histology results].

Objective: To explore the diagnostic accuracy of optical coherence tomography (OCT) and intravascular ultrasound (IVUS) in the detection of ex vivo coronary plaques with different compositions compared with histology results.

Methods: OCT and IVUS were performed in 15 autopsied heart specimens and the isolated coronary artery was assessed by routine histological processing thereafter. Coronary plaques were classified into 3 types (lipid-rich plaque, calcified plaque and fibrous plaque) according to standard criteria respectively.

Optical coherence tomography assessment of edge dissections after drug-eluting stent implantation in coronary artery.

Background: Edge dissections after coronary stent implantation are associated with increased short-term risk of major adverse cardiovascular events. The incidence and outcome of edge dissections after coronary stent implantation were reportedly different using different imaging techniques. We used optical coherence tomography (OCT) to assess the incidence, morphological findings and related factors of edge dissections after drug-eluting stent (DES) implantation.

Coronary plaque response after drug eluting stent implantation assessed by serial optical coherence tomography analysis.

Background: In general, percutaneous coronary intervention (PCI) relieves vessel stenosis by implantation of a stent, however, the relationship between plaque characteristics and response after stenting is not clear.

Methods: We enrolled 68 patients (68 vessels) with diagnosed unstable angina pectoris that prospectively underwent PCI and an optical coherence tomography (OCT) examination was done before and after stenting. Coronary plaques were classified as fibrous, lipid-rich and calcified plaque according to OCT examination, and fibrous cap thickness, lumen eccentricity, stent expansion, stent malapposition, tissue prolapse, thrombosis, dissection and stent symmetry were noted.

Identification and analysis of phosphorylation status of proteins in dormant terminal buds of poplar.

Background: Although there has been considerable progress made towards understanding the molecular mechanisms of bud dormancy, the roles of protein phosphorylation in the process of dormancy regulation in woody plants remain unclear.

Results: We used mass spectrometry combined with TiO₂ phosphopeptide-enrichment strategies to investigate the phosphoproteome of dormant terminal buds (DTBs) in poplar (Populus simonii × P. nigra).

Incidence, predictors, and clinical impact of tissue prolapse after coronary intervention: an intravascular optical coherence tomography study.

Objectives: To evaluate the predictors of tissue prolapse after stenting and whether this phenomenon can affect the clinical outcome.

Methods: All consecutive patients who underwent optical coherence tomography (OCT) examination after stent implantation were included. Qualitative and quantitative assessment of tissue prolapse after stent implantation was performed.

[Evaluation on the neointimal coverage post drug-eluting stent implantation by optical coherence tomography].

Objective: To assess the neointimal coverage after the implantation of various drug eluting stents (DES) by optical coherence tomography (OCT).

Methods: The study comprised of 62 patients implanted DES for (15.3 ± 5.

[Selection of distance thresholds of urban forest landscape connectivity in Shenyang City].

By using the QuickBird remote sensing image interpretation data of urban forests in Shenyang City in 2006, and with the help of geographical information system, this paper analyzed the landscape patches of the urban forests in the area inside the third ring-road of Shenyang. Based on the habitat availability and the dispersal potential of animal and plant species, 8 distance thresholds (50, 100, 200, 400, 600, 800, 1000, and 1200 m) were selected to compute the integral index of connectivity, probability of connectivity, and important value of the landscape patches, and the computed values were used for analyzing and screening the distance thresholds of urban forest landscape connectivity in the City. The results showed that the appropriate distance thresholds of the urban forest landscape connectivity in Shenyang City in 2006 ranged from 100 to 400 m, with 200 m being most appropriate.

[Impact of different proton pump inhibitors on the antiplatelet activity of clopidogrel in combination with aspirin for patients undergoing coronary stent implantation].

Objective: To evaluate the impact of different proton pump inhibitors on the antiplatelet activity of clopidogrel.

Methods: A total of 60 hospitalized patients undergoing percutaneous coronary intervention were randomly assigned to receive omeprazole group 40 mg/d (20 patients), pantoprazole group 40 mg/d (20 patients) and control group (20 patients). All patients also received standard clopidogrel therapy, continuing 30 days treatments.

[Optical coherence tomography for evaluation of neointimal proliferation after placement of a new drug eluting stent].

Objective: To evaluate neointimal proliferation following placement of a new drug-eluting stent (BUMA) by optical coherence tomography (OCT).

Methods: Twenty-two patients with coronary artery disease were randomized into BUMA group (n=15) and Endeavor group (n=7) and underwent OCT imaging after 9 months of stent implantation.

Results: The neointima hyperplasia (NIH) thickness in BUMA group were significantly smaller than that in endeavor group (0.

[Evaluation of the late stent malposition after drug-eluting stent implantation by optical coherence tomography].

Objective: To evaluate the characteristic of late stent malposition after drug-eluting stent implantation by optical coherence tomography (OCT).

Methods: The study comprised of 32 patients (target vessels: 51, total stents: 71) underwent drug eluting stent implantation one year ago [average (14.8 +/- 5.

[Selection of landscape metrics for urban forest based on simulated landscapes].

Based on the existing urban forest landscape of Shenyang, four landscape pattern gradients were simulated, and one existing landscape pattern gradient in accordance with the trend of these gradients was selected. By analyzing the responses of 28 landscape metrics for landscape fragmentation and patch shape complexity to various landscape pattern gradients, preference landscape metrics were selected for describing the degree of the two landscape pattern characteristics. The results showed that patch density (PD) and mean patch area (AREA_MN) regularly responded to the change of landscape fragmentation.

[Association between stent fracture and restenosis after drug-eluting stent implantation].

Objective: This study was performed to evaluate the relationship between the stent fracture and restenosis after drug-eluting stent implantation.

Methods: The study enrolled 536 patients with angiographies during stenting procedure and follow-up, the patients were divided into DES group (n=397) and BMS group (n=139). The coronary angiography images were analyzed to detect restenosis and stent fracture.