Spectroscopic studies on the supramolecular interactions of methyl benzoate derivatives with p-sulfocalix[6]arene macrocycles.

This paper is a continuation of our previous research and aims to further investigate and elucidate the nature and mechanisms of noncovalent supramolecular interactions between four methyl benzoate derivatives (I-IV), which are capable of exhibiting Twisted Intramolecular Charge Transfer (TICT) and/or Excited State Intramolecular Proton Transfer (ESIPT)-type behavior, and chemical and biological nanocavities. Photophysical and photochemical properties of molecules I-IV in aqueous solution in the presence of well-recognized macrocyclic host p-sulfocalix[6]arenes (SCA[6]) have been studied using steady-state, time-resolved and H NMR spectroscopic techniques. The changes in the ground- and excited-state spectroscopic characteristics (absorption and fluorescence spectra, time-resolved fluorescence spectra, fluorescence decay times and H NMR spectra) undergo significant modifications upon encapsulation of the investigated methyl benzoate derivative in the macromolecular cavity.

Protocols of Standard of Care for Adult Patients with Primary Antibody Deficiencies Will Improve Timing of Diagnosis, Survival, and Quality of Life.

The majority of primary immunodeficiencies (PIDs) are antibody deficiencies (PADs), and not all of them are rare diseases; As an example, Caucasian individuals suffer from selective IgA deficiency at a frequency of 1:500. In addition to infections, symptomatic patients with PAD are more likely to develop neoplastic, autoimmune, and allergic diseases. In the event that PAD is neglected or delayed for more than ten years, complications develop, eventually resulting in death.

Insight into Molecular Interactions of Two Methyl Benzoate Derivatives with Bovine Serum Albumin.

The nature and mechanisms of interaction between two selected methyl benzoate derivatives (methyl -methoxy -methylaminobenzoate- and methyl -hydroxy -methylaminobenzoate-) and model transport protein bovine serum albumin (BSA) was studied using steady-state and time-resolved spectroscopic techniques. In order to understand the role of Trp residue of BSA in the -BSA and -BSA interaction, the effect of free Trp amino acid on the both emission modes (LE-locally excited ( and ) and ESIPT-excited state intramolecular proton transfer ()) was investigated as well. Experimental results show that the investigated interactions (with both BSA and Trp) are mostly conditioned by the ground and excited state complex formation processes.

A multicenter survey on the aspects of everyday life in adult patients with primary antibody deficiencies treated with immunoglobulin G replacement during the COVID-19 pandemic.

Introduction: The COVID-19 pandemic has changed many aspects of everyday life. Patients with primary immunodeficiency (PID) are in a particularly difficult situation. The purpose of the present study was to contribute to the very limited research on the everyday aspects of functioning in PID patients during the COVID-19 pandemic.

B-Lymphocyte Depletion in Patients With Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: A Randomized, Double-Blind, Placebo-Controlled Trial.

Background: Previous phase 2 trials indicated benefit from B-lymphocyte depletion in myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS).

Objective: To evaluate the effect of the monoclonal anti-CD20 antibody rituximab versus placebo in patients with ME/CFS.

Design: Randomized, placebo-controlled, double-blind, multicenter trial.

Correction: amplifications in myeloma cell lines: correlation with MYC-inhibitor efficacy.

[This corrects the article DOI: 10.18632/oncotarget.4245.

Informativeness of Auditory Stimuli Does Not Affect EEG Signal Diversity.

Brain signal diversity constitutes a robust neuronal marker of the global states of consciousness. It has been demonstrated that, in comparison to the resting wakefulness, signal diversity is lower during unconscious states, and higher during psychedelic states. A plausible interpretation of these findings is that the neuronal diversity corresponds to the diversity of subjective conscious experiences.

Metabolic profiling indicates impaired pyruvate dehydrogenase function in myalgic encephalopathy/chronic fatigue syndrome.

Myalgic encephalopathy/chronic fatigue syndrome (ME/CFS) is a debilitating disease of unknown etiology, with hallmark symptoms including postexertional malaise and poor recovery. Metabolic dysfunction is a plausible contributing factor. We hypothesized that changes in serum amino acids may disclose specific defects in energy metabolism in ME/CFS.

Hydroxychloroquine potentiates carfilzomib toxicity towards myeloma cells.

Cells degrade proteins either by proteasomes that clinically are targeted by for example bortezomib or carfilzomib, or by formation of autophagosomes and lysosomal degradation that can be inhibited by hydroxychloroquine (HCQ). Multiple myeloma is unique among cancers because proteasomal inhibition has good clinical effects. However, some multiple myeloma patients display intrinsic resistance to the treatment and most patients acquire resistance over time.

Intracellular glutathione determines bortezomib cytotoxicity in multiple myeloma cells.

Multiple myeloma (myeloma in short) is an incurable cancer of antibody-producing plasma cells that comprise 13% of all hematological malignancies. The proteasome inhibitor bortezomib has improved treatment significantly, but inherent and acquired resistance to the drug remains a problem. We here show that bortezomib-induced cytotoxicity was completely dampened when cells were supplemented with cysteine or its derivative, glutathione (GSH) in ANBL-6 and INA-6 myeloma cell lines.

The phosphatase of regenerating liver-3 (PRL-3) is important for IL-6-mediated survival of myeloma cells.

Multiple myeloma (MM) is a neoplastic proliferation of bone marrow plasma cells. PRL-3 is a phosphatase induced by interleukin (IL)-6 and other growth factors in MM cells and promotes MM-cell migration. PRL-3 has also been identified as a marker gene for a subgroup of patients with MM.

MYC amplifications in myeloma cell lines: correlation with MYC-inhibitor efficacy.

In multiple myeloma, elevated MYC expression is related to disease initiation and progression. We found that in myeloma cell lines, MYC gene amplifications were common and correlated with MYC mRNA and protein. In primary cell samples MYC mRNA levels were also relatively high; however gene copy number alterations were uncommon.

Thrombocytopenia and perioperative complications after stentless Freedom Solo valve implantation.

Background: Freedom Solo (FS) stentless bioprostheses have superior haemodynamic performance compared to stented valves; however, the data of thrombocytopenia after FS implantations is disturbing.

Aim: To compare platelet count and perioperative complications between stentless and stented biological valves in patients undergoing aortic valve replacement.

Methods: In 29 patients, FS bovine valves (Sorin Group, Saluggia, Italy) were implanted.

(1H-Pyrazole-κN)bis-(tri-tert-but-oxy-silane-thiol-ato-κ(2) O,S)cadmium.

The Cd(II) atom in the title complex, [Cd(C12H27O3SSi)2(C3H4N2)], is penta-coordinated by two O and two S atoms from the O,S-chelating silane-thiol-ate residue and one pyrazole N atom in a distorted geometry that is slightly closer to trigonal-bipyramidal than to square-based pyramidal. The pyrazole ligand is stabilized within the complex by an intra-molecular N-H⋯O hydrogen bond. One of the tert-butyl groups is disordered over two orientations with occupancy ratio of 0.

A method for measurement of drug sensitivity of myeloma cells co-cultured with bone marrow stromal cells.

The tumor microenvironment can profoundly affect tumor cell survival as well as alter antitumor drug activity. However, conventional anticancer drug screening typically is performed in the absence of stromal cells. Here, we analyzed survival of myeloma cells co-cultured with bone marrow stromal cells (BMSC) using an automated fluorescence microscope platform, ScanR.

Bis(diisopropylammonium) thiosulfate and bis(tert-butylammonium) thiosulfate.

Two new dialkylammonium thiosulfates, namely bis(diisopropylammonium) thiosulfate, 2C(6)H(16)N(+)·S(2)O(3)(2-), (I), and bis(tert-butylammonium) thiosulfate, 2C(4)H(12)N(+)·S(2)O(3)(2-), (II), have been characterized. The secondary ammonium salt (I) crystallizes with Z = 4, while the primary ammonium salt (II), with more hydrogen-bond donors, crystallizes with Z = 8 and a noncrystallographic centre of inversion. In both salts, the organic cations and thiosulfate anions are linked within extensive N-H···O and N-H···S hydrogen-bond networks, forming extended two-dimensional layers.

Risk factors of neurological complications in cardiac surgery.

Background: Postoperative complications are integral to cardiac surgery. The most serious ones are stroke, which develops in about 7.5% of the patients, and postoperative encephalopathy, which affects 10-30% of the patients.

Intramolecular interactions in crystals of tris(2,6-diisopropylphenoxy)silanethiol and its sodium salts.

Hydrolytically stable silanethiol tris(2,6-diisopropylphenoxy)silanethiol (TDST) has been synthesized and reacted with sodium metal. In solid state TDST exhibits π-interactions between the S-H unit and the π-system of the arene, replaced by cation-π interactions in its sodium salts. The interactions are documented by crystal structures and FT-IR spectroscopy.

Bromidotetra-kis-(1H-2-ethyl-5-methyl-imidazole-κN)copper(II) bromide.

The Cu(II) ion in the title compound, [CuBr(C(6)H(10)N(2))(4)]Br, is coordinated in a square-based-pyramidal geometry by the N atoms of four imidazole ligands and a bromide anion in the apical site. Both the Cu(II) and Br(-) atoms lie on a crystallographic fourfold axis. In the crystal, the [CuBr(C(6)H(10)N(2))(4)](+) complex cations are linked to the uncoordinated Br(-) anions (site symmetry [Formula: see text]) by N-H⋯Br hydrogen bonds, generating a three-dimensional network.

Bromidotetra-kis-(2-isopropyl-1H-imidazole-κN)copper(II) bromide.

The Cu(II) atom in the title salt, [CuBr(C(6)H(10)N(2))(4)]Br, is coordinated in a square-pyramidal geometry by four imidazole N atoms and one bromide anion that is located at the apex of the pyramid. The cations and the anions form a two-dimensional network parallel to (001) through N-H⋯Br hydrogen bonds.

Syntheses and structures of the first terminal phosphanylphosphido complex of hafnium [Cp2Hf(Cl){η(1)-(Me3Si)P-P(NEt2)2}] and the first zirconocene-phosphanylphosphinidene dimer [Cp2Zr{μ(2)-P-P(NEt2)2}2ZrCp2].

Reactions of (Et(2)N)(2)P-P(SiMe(3))Li with [Cp(2)MCl(2)] (M = Zr, Hf) in toluene or pentane yield the related terminal phosphanylphosphido complexes [Cp(2)M(Cl){η(1)-(Me(3)Si)P-P(NEt(2))(2)}]. The solid state structure of [Cp(2)Hf(Cl){η(1)-(Me(3)Si)P-P(NEt(2))(2)}] was established by single crystal X-ray diffraction. The reaction of (Et(2)N)(2)P-P(SiMe(3))Li with [Cp(2)ZrCl(2)] in THF or DME solutions leads to the formation of deep red crystals of the first neutral diamagnetic zirconocene-phosphanylphosphinidene dimer [Cp(2)Zr{μ(2)-P-P(NEt(2))(2)}(2)ZrCp(2)].

catena-Poly[[(tetra-hydro-furan-κO)lithium(I)]-bis-(μ-trimethyl-silanolato-κO:O)-gallium(III)-bis-(μ-trimethyl-silanolato-κO:O)-[(tetra-hydro-furan-κO)lithium(I)]-μ-bromido].

The title chain polymer compound, [GaLi(2)Br(C(3)H(9)OSi)(4)(C(4)H(8)O)(2)](n), was obtained in the reaction of GaBr(3) with Me(3)SiOLi in toluene/tetra-hydro-furan. The Ga(III) atom, located on a twofold rotation axis, is coordinated by four trimethyl-silanolate ligands and has a distorted tetra-hedral geometry. The Li(I) atom is four coordinated by one bridging Br atom located on an inversion centre, two trimethyl-silanolate ligands and one tetra-hydro-furane mol-ecule in a distorted tetra-hedral geometry.

Bis(3,5-dimethyl-pyridine-κN)bis-(tri-tert-butoxy-silanethiol-ato-κS)chromium(II) toluene solvate.

In the title chromium silanethiol-ate, [Cr(C(12)H(27)O(3)SSi)(2)(C(7)H(9)N)(2)]·C(7)H(8), the Cr(II) atom is coordinated by two S and two N atoms in a distorted square-planar geometrical arrangement. The mononuclear mol-ecule lies on a twofold axis that passes through the pyridine N atoms. The toluene solvent mol-ecule is equally disordered about a twofold axis.

2,2,6,6-Tetra-methyl-piperidinium triisopropoxysilanethiol-ate.

The crystal of the title compound, C(9)H(20)N(+)·C(9)H(21)O(3)SSi(-), is built of aggregates, each made up of two 2,2,6,6-tetra-methyl-piperidinium cations and two triisopropoxysilanethiol-ate anions. The aggregates are linked by four N-H⋯S bonds and correspond to an R(2) (4)(8) graph-set motif.