Alamandin and especially melatonin attenuate pulmonary arterial hypertension induced by monocrotalin.

Background: Despite the available treatments, pulmonary arterial hypertension (PAH) prognosis is poor.

Objectives: We aimed to investigate the effects of the alamandine (ALA), melatonin (MEL), and ALA + MEL in PAH.

Methods: The rats were randomly divided into Control (n = 10), monocrotaline (MCT) (n = 12), ALA (n = 12), MEL (n = 12), and ALA + MEL (n = 12) groups.

Enhancement of enzyme activity by laser-induced energy propulsion of upconverting nanoparticles under near-infrared light: A comprehensive methodology for in vitro and in vivo applications.

If the appropriate immobilization method and carrier support are not selected, partial decreases in the activity of enzymes may occur after immobilization. Herein, to overcome this challenge, an excitation mechanism that enables energy transfer was proposed. Modified upconverting nanoparticles (UCNPs) were constructed and the important role of near-infrared (NIR) excitation in enhancing the catalytic activity of the enzyme was demonstrated.

A rational approach for 3D recognition and removal of L-asparagine via molecularly imprinted membranes.

In this study, a L-asparagine (L-Asn) imprinted membranes (L-Asn-MIPs) were synthesized via molecular imprinting for selective and efficient removal of L-Asn. The L-Asn-MIP membrane was prepared by using acrylamide (AAm) and hydroxyethyl methacrylate (HEMA) as a functional monomer and a comonomer, respectively. The membrane was characterized by scanning electron microscopy (SEM) and Fourier Transform infrared spectroscopy (FTIR).

Design, synthesis, spectroscopic characterizations, single crystal X-ray analysis, xanthine oxidase and acetylcholinesterase inhibitory evaluation as well as evaluation of selenium-based -heterocyclic carbene compounds.

Herein, eight new NHC-based selenourea derivatives were synthesized and characterized by using spectroscopic method (H, F, and C NMR, FT-IR), and elemental analysis techniques. These compounds were synthesized by mixing benzimidazolium salts, potassium carbonate, and selenium powder in ethyl alcohol. Additionally, the molecular and crystal structures of the three compounds (, , and ) were determined using the single-crystal x-ray diffraction (XRD) method.

Fast Curing Multifunctional Tissue Adhesives of Sericin-Based Polyurethane-Acrylates for Sternal Closure.

The use of wire cerclage after sternal closure is the standard method because of its rigidity and strength. Despite this, they have many disadvantages such as tissue trauma, operator-induced failures, and the risk of infection. To avoid complications during sternotomy and promote tissue regeneration, tissue adhesives should be used in post-surgical treatment.

The Cytotoxicity, DNA Fragmentation, and Decreasing Velocity Induced By Chromium(III) Oxide on Rainbow Trout Spermatozoa.

The present study aimed to determine the cytotoxicity of chromium(III) oxide micro particles (CrO-Ps) in rainbow trout (Oncorhynchus mykiss) spermatozoa. Firstly, CrO-Ps were synthesized and structurally characterized the surface, morphological for particle size and thermal properties. In addition, its structural and elemental purity was determined using energy-dispersive X-ray (EDX) spectrum and elemental maps.

Effects of taurine and apocynin on the zone of stasis.

Background: Among the zones of coagulation, hyperemia and stasis that occur in the burned area, the most intense metabolic process and the highest sensitivity to recovery with treatment is the zone of stasis.This metabolic process is related to how well the tissues in the zone of stasis can cope with oxidative stress. If the tissues in the zone of stasis are saved, the burn area will potentially heal faster and with less scar.

Design of laccase-metal-organic framework hybrid constructs for biocatalytic removal of textile dyes.

This study aims to present a simple and effective carrier matrix to immobilize laccase as opposed to complex and tedious immobilization processes and also to use it in the removal of textile dyes. For this purpose, Cobalt (Co) and Copper (Cu) based metal-organic frameworks (MOFs) were prepared and laccase was immobilized on two different MOFs via encapsulation. The characterization outcomes showed that laccase was well immobilized into MOF supports.

Synthesis, inhibition properties against xanthine oxidase and molecular docking studies of dimethyl N-benzyl-1H-1,2,3-triazole-4,5-dicarboxylate and (N-benzyl-1H-1,2,3-triazole-4,5-diyl)dimethanol derivatives.

This study focused on synthesis various dimethyl N-benzyl-1H-1,2,3-triazole-4,5-dicarboxylate and (N-benzyl-1H-1,2,3-triazole-4,5-diyl)dimethanol derivatives under the conditions of green chemistry without the use of solvent and catalysts. Their inhibition properties were also investigated on xanthine oxidase (XO) activity. All dimethanol and dicarboxylate derivatives exhibited significant inhibition activities with IC values ranging from 0.

Melatonin protects sperm cells of Capoeta trutta from toxicity of titanium dioxide nanoparticles.

In this study, it was aimed to determine the protective effects of melatonin (0.01, 0.1, and 1 mM) against 10 mg/L titanium dioxide nanoparticles (TiO-NPs) on kinematic and oxidative indices in the sperm cells of Capoeta trutta.

Synthesis, biological evaluation and molecular docking studies of bis-chalcone derivatives as xanthine oxidase inhibitors and anticancer agents.

In this study, a series of B-ring fluoro substituted bis-chalcone derivatives were synthesized by Claisen-Schmidt condensation reactions and evaluated for their ability to inhibit xanthine oxidase (XO) and growth inhibitory activity against MCF-7 and Caco-2 human cancer cell lines, in vitro. According to the results obtained, the bis-chalcone with fluoro group at the 2 (4b) or 2,5-position (4g) of B-ring were found to be potent inhibitors of the enzyme with IC values in the low micromolar range. The effects of these compounds were about 7 fold higher than allopurinol.

Magnetic-propelled FeO-chitosan carriers enhance l-asparaginase catalytic activity: a promising strategy for enzyme immobilization.

Magnetic-propelled carriers comprising magnetic FeO-chitosan nanoparticles were immobilized with l-asparaginase (l-ASNase). The enzyme displayed enhanced catalytic activity in a weak magnetic field, and thermal and pH stabilities. The conjugated l-ASNase presented higher thermostability and wider range of pH stability in comparison with those of free l-ASNase.

Xanthine oxidase inhibitory activity of new pyrrole carboxamide derivatives: In vitro and in silico studies.

Pyrrole carboxamide rings are rarely used as active scaffold in designing inhibitors for enzymes. Herein, we described the structure-activity relationship for novel xanthine oxidase inhibitors based on the pyrrole carboxamide scaffold. A series of novel-substituted pyrrole carboxamide derivatives were synthesized and characterized; their in vitro and in silico inhibitory activities were determined against xanthine oxidase.

Chloro-Modified Magnetic FeO@MCM-41 Core-Shell Nanoparticles for L-Asparaginase Immobilization with Improved Catalytic Activity, Reusability, and Storage Stability.

This paper describes a new support that permits to efficient immobilization of L-asparaginase (L-ASNase). For this purpose, FeO magnetic nanoparticles were synthesized and coated by MCM-41. 3-chloropropyltrimethoxysilane (CPTMS) was used as a surface modifying agent for covalent immobilization of L-ASNase on the magnetic nanoparticles.

Magnetic FeO@MCM-41 core-shell nanoparticles functionalized with thiol silane for efficient l-asparaginase immobilization.

l-Asparaginase (l-ASNase) is a vital enzyme for medical treatment and food industry. Here, we assessed the use of FeO@Mobil Composition of Matter No. 41 (MCM-41) magnetic nanoparticles as carrier matrix for l-ASNase immobilization.