A novel ratiometric sensor for fluorimetric and visual dual-mode detection of Al in environmental water based on the target-regulated formation of Eu MOFs.

Herein, a novel ratiometric sensor for fluorimetric and smartphone-assisted visual detection of Al in environmental water was developed based on the target-regulated formation of Eu metal-organic frameworks (Eu MOFs). By employing 2-[4-(2-hydroxyethyl) piperazin-1-yl] ethanesulfonic acid (Hepes), Eu and tetracycline (TC) as raw materials, Eu MOFs with red emission were facilely synthesized through the coordination of Eu with Hepes and TC. However, upon the introduction of Al, a higher affinity of TC towards Al resulted in the formation of a TC-Al complex with green fluorescence and inhibited the generation of Eu MOFs.

The expression of apoptosis related genes in HK-2 cells overexpressing was determined by RNA-seq analysis.

Chronic kidney disease (CKD) is a serious disease that endangers human health. It is reported that inhibiting renal cell apoptosis can delay the progress of CKD. Our previous study found that the mice with protein phosphatase Mg2+/Mn2+ dependent 1K () gene deletion had obvious symptoms of glomerular vascular and interstitial vascular dilatation, congestion and hemorrhage, glomerular hemorrhage and necrosis, interstitial fibrous tissue proliferation, decreased urinary creatinine clearance, and increased urinary protein level.

Curcumenol Targeting YWHAG Inhibits the Pentose Phosphate Pathway and Enhances Antitumor Effects of Cisplatin.

Objective: Cervical cancer is a common cancer in women. The drug resistance of chemotherapeutic agents has always been an urgent problem to be solved in clinics. The purpose of this study was to determine the role of tyrosine 3-monooxygenase/tryptophan 5-monooxygenase activation protein gamma polypeptide (YWHAG) in cervical cancer and explore the effect of on cervical cancer and its possible mechanism.

Assessment of High-Power Catheter Ablation in Patients With Atrial Fibrillation: A Meta-Analysis.

High-power radiofrequency (RF) catheter ablation was considered as a promising alternative strategy to conventional-power ablation in the treatment of patients with atrial fibrillation (AF). This study sought to compare the efficacy and safety of high-power energy delivery to that of conventional-power setting in AF catheter ablation. We performed a systematic review of relevant literature in Pubmed, Embase, Cochrane library, and Google Scholar database.

Serum human epididymis protein 4 levels in the prediction of the recurrence of atrial fibrillation after catheter ablation.

The aim of this study is to assess serum human epididymis protein 4 (HE-4) levels as a biomarker for predicting the recurrence of atrial fibrillation (AF) after catheter ablation. This was a prospective observational study that enrolled one hundred eighty-four consecutive nonvalvular AF patients (65 persistent, 119 paroxysmal) who were eligible for their first ablation. Multiple Cox proportional hazards models and Kaplan-Meier curve analyses were used to test the association between serum HE-4 levels and AF recurrence after catheter ablation.

Melatonin against Myocardial Ischemia-Reperfusion Injury: A Meta-analysis and Mechanism Insight from Animal Studies.

Aims: Myocardial reperfusion damage after severe ischemia was an important issue during a clinical practice. However, the exacted pathogenesis involved remained unclear and also lacks effective interventions. Melatonin was identified to exert protective effects for alleviating the myocardial I/R injury.

Protective role of silibinin against myocardial ischemia/reperfusion injury-induced cardiac dysfunction.

Silibinin is a traditional medicine and utilized for liver protection with antioxidant, anti-inflammation and anti-apoptosis properties. However, its role in myocardial I/R injury and the mechanism involved is currently unknown. In the present study, Silibinin treatment improves cardiac function and limits infarct size, and subsequently inhibits fibrotic remodeling in mice with myocardial I/R injury.

Relationship between plasma cancer antigen (CA)-125 level and one-year recurrence of atrial fibrillation after catheter ablation.

Background: Previous studies have shown that plasma cancer antigen-125 (CA-125) is closely related to heart failure and new-onset atrial fibrillation (AF), but no study reported the relationship between CA-125 concentrations and advanced recurrence of AF ablation. This research is the first to describe CA-125 as a biomarker for the recurrence of AF after ablation.

Methods: A total of 422 AF patients undergoing catheter ablation were included in this study.

A Meta-Analysis of Resveratrol Protects against Myocardial Ischemia/Reperfusion Injury: Evidence from Small Animal Studies and Insight into Molecular Mechanisms.

Aims: Myocardial ischemia/reperfusion (I/R) injury is a leading cause of cardiomyocyte loss and subsequent ventricular dysfunction after restoring the coronary blood flow and contributes to considerable increase in morbidity and mortality. Resveratrol has been declared to confer cardioprotection against and ex vivo myocardial I/R injury. Here, we have sought to investigate the effects of preconditioning with resveratrol on myocardial I/R damage across the small animal studies.

The Effect of Sodium Fluoride on Cell Apoptosis and the Mechanism of Human Lung BEAS-2B Cells In Vitro.

Sodium fluoride (NaF) is a source of fluoride ions used in many applications. Previous studies found that NaF suppressed the proliferation of osteoblast MC3T3 E1 cells and induced the apoptosis of chondrocytes. However, little is known about the effects of NaF on human lung BEAS-2B cells.

Concise total synthesis of two marine natural nucleosides: trachycladines A and B.

We report the first total synthesis of trachycladines A (10 steps, 34.2% overall yield) and B (11 steps, 35.0% overall yield) by using 5-deoxy-1,2,3-tri-O-acetyl-β-D-ribofuranose as the starting material.

Chiral tertiary amine thiourea-catalyzed asymmetric inverse-electron-demand Diels-Alder reaction of chromone heterodienes using 3-vinylindoles as dienophiles.

A straightforward and efficient protocol for the construction of structurally and biologically interesting chiral flavanoids incorporating three privileged structures, i.e., chromanone, dihydropyran, and indole, has been developed on the basis of chiral bifunctional tertiary amine thiourea-catalyzed asymmetric inverse-electron-demand Diels-Alder reaction of chromone heterodienes and 3-vinylindoles, which were used as dienophiles.

Enantioselective construction of dihydropyran-fused indoles through chiral calcium phosphate catalyzed oxo-hetero-Diels-Alder reactions by using 2-oxoindolin-3-ylidenes as heterodienes.

Carbon-carbon bond formation: A highly efficient method for the oxo-hetero-Diels-Alder reaction of 2-oxoindolin-3-ylidenes based on chiral calcium phosphate is described. In general, adducts were obtained with high yields and excellent diastereo- and enantioselectivities (up to 96 % yield, >99:1 endo/exo, >99 % ee; see scheme, Boc = tert-butoxycarbonyl).

Enantioselective construction of spirooxindole derivatives through [3+2] annulation catalyzed by a bisthiourea as a multiple-hydrogen-bond donor.

Anything between ureas? Spiro[isoxazolidine-3,3'-oxindole]s have been constructed by employing methyleneindolinones and nitrones as the starting materials through [3+2] annulation catalyzed by a bisthiourea. Products with three contiguous stereocenters, including one spiroquaternary stereocenter, are obtained in good yields with excellent enantio- and diastereoselectivity. The bisthiourea catalyst acts as a multiple-hydrogen-bond donor to simultaneously activate both substrates.

Catalytic enantioselective aryl transfer to aldehydes using chiral 2,2'-bispyrrolidine-based salan ligands.

Chiral C₂-symmetric diamines have emerged as versatile auxiliaries or ligands in numerous asymmetric transformations. Chiral 2,2'-bispyrrolidine-based salan ligands were prepared and applied to the asymmetric aryl transfer to aldehydes with arylboronic acids as the source of transferable aryl groups. The corresponding diarylmethanols were obtained in high yields with moderate to good enantioselectivitives of up to 83% ee.

Straightforward and highly efficient catalyst-free one-step synthesis of 2-(purin-6-yl)acetoacetic acid ethyl esters, (purin-6-yl)acetates, and 6-methylpurines through S(N)Ar-based reactions of 6-halopurines with ethyl acetoacetate.

A novel approach to the synthesis of purines bearing functionalized carbon substituents or methyl in position 6 was developed. Under different reaction conditions, 6-halopurine derivatives could react with ethyl acetoacetate efficiently to yield 2-(purin-6-yl)acetoacetic acid ethyl esters, (purin-6-yl)acetates and 6-methylpurines respectively. No metal catalyst and ligand were required.

A novel one-step method for the synthesis of C-5-substituted Omicron6,5'-cyclopyrimidine nucleoside analogues in ammonia water.

A novel one-step method for preparing C-5-substituted Omicron(6),5'-cyclopyrimidine nucleoside analogues is reported. This method employs molecular iodine to mediate the cyclization from the 5'-Omicron-hydroxyl group of the sugar ring and C-6 at the position of the nitrogen base in ammonia water under mild conditions without any other aprotic organic solvent.