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01 to1.05), required less contrast volume (MD=-18.64 95% CI -30.89 to -6.39) and fluoroscopy time (MD=-9.12; 95% CI -16.90 to -1.34) compared with males. There was no statistical difference in in-hospital (RR=1.50; 95% CI 0.73 to 3.09) or longer term (≥6 months) all-cause mortality (RR=1.10; 95% CI 0.86 to 1.42) between the two groups.
CTO PCI is feasible and safe in female patients with comparable outcomes in female versus male patients.
CTO PCI is feasible and safe in female patients with comparable outcomes in female versus male patients.Enhancing soil carbon (C) storage has the potential to offset human-caused increases in atmospheric CO2 . Rising CO2 has occurred concurrently with increasing supply rates of biologically limiting nutrients such as nitrogen (N) and phosphorus (P). However, it is unclear how increased supplies of N and P will alter soil C sequestration, particularly in grasslands, which make up nearly a third of non-agricultural land worldwide. Here, we leverage a globally distributed nutrient addition experiment (the Nutrient Network) to examine how a decade of N and P fertilization (alone and in combination) influenced soil C and N stocks at nine grassland sites spanning the continental United States. We measured changes in bulk soil C and N stocks and in three soil C fractions (light and heavy particulate organic matter, and mineral-associated organic matter fractions). Nutrient amendment had variable effects on soil C and N pools that ranged from strongly positive to strongly negative, while soil C and N pool sizes varied by more than an order of magnitude across sites. Piecewise SEM clarified that small increases in plant C inputs with fertilization did not translate to greater soil C storage. read more Nevertheless, peak season aboveground plant biomass (but not root biomass or production) was strongly positively related to soil C storage at seven of the nine sites, and across all nine sites, soil C covaried with moisture index and soil mineralogy, regardless of fertilization. Overall, we show that site factors such as moisture index, plant productivity, soil texture, and mineralogy were key predictors of cross-site soil C, while nutrient amendment had weaker and site-specific effects on C sequestration. This suggests that prioritizing the protection of highly productive temperate grasslands is critical for reducing future greenhouse gas losses arising from land use change.Metabolic activation of the human carcinogen 1,3-butadiene (BD) by cytochrome 450 monooxygenases gives rise to a genotoxic diepoxide, 1,2,3,4-diepoxybutane (DEB). link2 This reactive electrophile alkylates guanine bases in DNA to produce N7-(2-hydroxy-3,4-epoxy-1-yl)-dG (N7-HEB-dG) adducts. Because of the positive charge at the N7 position of the purine heterocycle, N7-HEB-dG adducts are inherently unstable and can undergo spontaneous depurination or base-catalyzed imidazole ring opening to give N 6 -[2-deoxy-D- erythro -pentofuranosyl]-2,6-diamino-3,4-dihydro-4-oxo-5- N -1-(oxiran-2-yl)propan-1-ol-formamidopyrimidine (DEB-FAPy-dG) adducts. Here we report the first synthesis and structural characterization of DEB-FAPy-dG adducts. Authentic standards of DEB-FAPy-dG and its 15 N 3 -labeled analogue were used for the development of a quantitative nanoLC-ESI + -HRMS/MS method, allowing for adduct detection in DEB-treated calf thymus DNA. DEB-FAPy-dG formation in DNA was dependent on DEB concentration and pH, with higher numbers observed under alkaline conditions.Faujasite (FAU) zeolites (with Si/Al ratio of ca. 1.7) undergo mild dealumination at moderate ion exchange conditions (0.01 to 0.6 M of NH 4 NO 3 solutions) resulting in protons circumscribed by sodalite cages becoming accessible for reaction without conspicuous changes to bulk crystallinity. The ratio of protons in sodalite cages (H SOD ) to supercages (H SUP ) can be systematically manipulated from 0 to ca. 1 by adjusting ammonium concentrations used in ion exchange. The fraction of accessible protons in the sodalite cages is assessed by virtue of infrared spectra for H-D exchange of deuterated propane based on the band area ratio of OD 2620 / OD 2680 (OD SOD / OD SUP ). Protons in sodalite cages (H SOD ) show higher rate constants of propane dehydrogenation ( k D ) and cracking ( k C ) than protons in supercages (H SUP ) plausibly due to confinement effects being more prominent in smaller voids. Rate constants of dehydrogenation and cracking including k D / k C ratios are also augmented as the fraction of accessible protons in the sodalite cages is enhanced. These effects of accessibility and reactivity of protons in sodalite cages hitherto inconspicuous are revealed herein via methods that systematically increase accessibility of cations located in sodalite cages.The opportunistic human pathogen Pseudomonas aeruginosa exhibits great resistance to antibiotics; so, new therapeutic agents are urgently needed. Since polyamines levels are incremented in infected tissues, we explored whether the formation of a toxic aldehyde in polyamines degradation can be exploited in combating infection. We cloned the gene encoding the only aminoaldehyde dehydrogenase involved in P. aeruginosa polyamines-degradation routes, PaPauC, overexpressed this enzyme, and found that it oxidizes 3-aminopropionaldehyde (APAL) and 3-glutamyl-3-aminopropionaldehyde (GluAPAL) - produced in spermine (Spm), spermidine (Spd), and diaminopropane (Dap) degradation, as well as 4-aminobutyraldehyde (ABAL) and 4-glutamyl-4-aminobutyraldehyde (GluABAL) - formed in putrescine (Put) degradation. As the catalytic efficiency of PaPauC with APAL was 30-times lower than with GluAPAL, and GluAPAL is predominantly formed, APAL will be poorly oxidized 'in vivo'. We found polyamines-induced increases in the PaPauC activity of cell crude-extracts and in the expression of the PapauC gene that were diminished by glucose. Spm, Spd, or Dap, but not Put, were toxic to P. aeruginosa even in the presence of other carbon and nitrogen sources, particularly to a strain with the PapauC gene disrupted. APAL, but not GluAPAL, was highly toxic even to wild-type cells, suggesting that its accumulation, particularly in the absence of, or low, PaPauC activity is responsible for the toxicity of Spm, Spd, and Dap. Our results shed light on the toxicity mechanism of these three polyamines and strongly support the critical role of PaPauC in this toxicity. Thus, PaPauC emerges as a novel potential drug target whose inhibition might help in combating infection by this important pathogen.The exploitation of highly efficient carbon dioxide reduction (CO2RR) electrocatalyst for methane (CH4) electrosynthesis has attracted great attention for the intermittent renewable electricity storage, but remain challenges. Here, N-heterocyclic carbene (NHC)-ligated Copper single atom site (Cu SAS) embedded in metal organic framework is reported (2Bn-Cu@UiO-67), which can achieve an outstanding Faradaic efficiency (FE) of 81% for the CO2 reduction to CH4 at -1.5 V vs RHE with a current density of 420 mA cm-2. Notably, the CH4 FE of our catalyst remains above 70% within a wide potential range, and achieves an unprecedented turnover frequency (TOF) of 16.3 s-1, which almost represents the best molecular catalyst for CH4 electrosynthesis to date. The experimental results show that the σ donation of NHC enriches the surface electron density of Cu SAS and promotes the preferential adsorption of CHO* intermediates. Meanwhile, the porosity of the catalyst facilitates the diffusion of CO2 to 2Bn-Cu, thereby significantly increasing the availability of each catalytic center. This NHC-ligated Cu SAS catalyst design has great advantages in CH4 electrosynthesis and provides ideas for the commercial production of CH4.Plaque rupture leads to a cascade of events culminating in collagen disruption, tissue factor release, platelet activation and thrombus formation. Pro-inflammatory conditions, hyperglycemia and smoking predispose to high thrombus burden (HTB) which is an independent predictor of slow or no-reflow. In patients with acute myocardial infarction (AMI), glycoprotein IIb/IIIa inhibitors (GPI) reduce thrombus burden and improve myocardial perfusion. These agents are typically administered systemically via the intravenous route or locally via an intracoronary (IC) route. However, as higher local concentrations of GPI are associated with enhanced platelet inhibition, intralesional (IL) GPI administration may be particularly effective in cases of HTB. link3 Modest-sized randomized trials comparing IL and IC GPI delivery have reported conflicting outcomes. Some trials have demonstrated improved coronary flow and myocardial perfusion with reduced major adverse cardiac events with IL compared with IC GPI administration, whereas others have shown no significant benefits. Furthermore, although no direct comparison has been made between IL delivery using an aspiration catheter, microcatheter or a dedicated balloon-based "weeping" infusion-catheter, improved outcomes have been most consistent following GPI administration at the site of the lesion and thrombus with the dedicated infusion catheter. This review provides an update on the role and outcomes of IL GPI administration in patients with AMI and HTB. Based on the evidence we offer an algorithm demonstrating when to consider IL administration in patients with AMI undergoing intervention. We conclude with a perspective on the management of patients with STEMI and COVID-19 in whom a prothrombotic state often results in HTB.Many phytopathogenic fungi can easily infect crops, resulting in crop yield reductions. In continuation of our effort to develop natural product (NP)-based antifungal agents, a series of N -phenylpyrazole sarisan hybrids 6a - v were prepared via I 2 -mediated oxidative cyclization, and their structures were determined by various spectral analyses including IR, 1 H NMR and ESI-MS. Among all N- phenylpyrazole sarisan hybrids, compounds 6a , 6b , 6e , 6i , 6j and 6r showed more potent antifungal activity against at lest two phytopathogenic fungi than the commercial fungicide hymexazol. In particular, compound 6a exhibited more broad-spectrum and promising antifungal activity against three phytopathogenic fungi ( V. mali , F. oxysporum f.sp.niveum , and F. graminearum ) with the EC 50 values of 18.5, 37.4 and 12.6 μg/mL, respectively. Moreover, the structure-activity relationships (SARs) were also observed. Additionally, compounds 6a and 6e also exhibited relative low toxicity on normal LO2 cells. This work indicates that these N -phenylpyrazole sarisan hybrids would shed light on developing novel NP-based antifungal agents.Indolizidine alkaloids, which have versatile bioactivities, are produced by various organisms. Although the biosynthesis of some indolizidine alkaloids has been studied, the enzymatic machinery for their biosynthesis in Streptomyces remains elusive. Here, we report the identification and analysis of the biosynthetic gene cluster for iminimycin, an indolizidine alkaloid with a 6-5-3 tricyclic system containing an iminium cation from Streptomyces griseus . The gene cluster has 22 genes, including four genes encoding polyketide synthases (PKSs), which consist of eight modules in total. In vitro analysis of the first module revealed that its acyltransferase domain selects malonyl-CoA, although predicted to select methylmalonyl-CoA. Inactivation of seven tailoring enzyme-encoding genes and structural elucidation of four compounds accumulated in mutants provided important insights into iminimycin biosynthesis, although some of these compounds appeared to be shunt products. This study expands our knowledge of the biosynthetic machinery of indolizidine alkaloids and the enzymatic chemistry of PKS.
Homepage: https://www.selleckchem.com/products/r428.html
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