There is a need for mammalian cell cryopreservation methods that either avoid or improve upon outcomes employing dimethyl sulfoxide (DMSO) as a cryoprotectant. DMSO was the second effective cryoprotectant to be discovered (Lovelock, 1959). Cell cryopreservation usually involves slow rate freezing with DMSO in culture medium and storage below -135°C for later use. Typically as long as there are ...

We explore some aspects of the microscopic structure curcumin solutions with water-dimethylsulfoxide solvent variable composition. Molecular dynamics computer simulations at isobaric-isothermal conditions are used for this purpose. The model consists OPLS-UA type enol conformer (J. Mol. Liq., 223, 707, 2016), OPLS dimethylsulfoxide (DMSO) and SPC/E water model. Radial distributions centers mass...

Although TPPS undergoes photo-bleaching in ethanol or DMSO alone, it formed J-aggregates in the mixed solvent of ethanol and DMSO under UV irradiation, and the formed J-aggregate showed chirality due to chiral-symmetry-breaking.

The rate of hydrolysis of the aromatic rings of Cp(2)TiX(2) [X = CI 1, O(2)CCCl(3)8 and O(2)CCH(2)NH(3)Cl 13], in aqueous solutions, 10%DMSO and 100% DMSO have been studied by (1)H NMR spectroscopy. Rapid hydrolysis of both the carboxylate and cyclopentadienyl ligands in Cp(2)TiX(2)[X = O(2)CCCl(3),O(2)CCH(2)NH(3)Cl] occurs in DMSO to give biologically inactive species. The rate of these reacti...

Fragmented sarcoplasmic reticulum (FSR) vesicles from rabbit skeletal muscle were suspended in 5-10% ethylene glycol (EG) or in 5, 10, or 15% dimethylsulfoxide (DMSO) and were pelleted onto flat aluminum foil disks. No vesicle fusion o-curs with either 5 or 10% EG treatment and 2-21/2 hours drying. After 4-5 hours drying, 5% EG-treated vesicles have established more areas of close contact and i...

The dehydrogenation of cyclohexanones affords cyclohexenones or phenols via removal of 1 or 2 equiv of H2, respectively. We recently reported several Pd(II) catalyst systems that effect aerobic dehydrogenation of cyclohexanones with different product selectivities. Pd(DMSO)2(TFA)2 is unique in its high chemoselectivity for the conversion of cyclohexanones to cyclohexenones, without promoting su...

The in vitro maturation (IVM), fertilization (IVF) and morphological changes in buffalo cumulus oocyte complexes (COCs) cryopreserved by ultra rapid freezing using conventional (CON) and open-pulled straw (OPS) methods were tested. COCs were cryopreserved using a vitrification solution comprising of DPBS + 0.5M sucrose + 0.4% BSA and two concentrations (4.5 or 5.5M) of each cryoprotectant ethyl...

Fowler, Audree V. (University of California, Los Angeles), and Irving Zabin. Effects of dimethylsulfoxide on the lactose operon in Escherichia coli. J. Bacteriol. 92:353-357. 1966.-Dimethylsulfoxide (DMSO) at a concentration of 5% (v/v) in the culture medium inhibits the growth of Escherichia coli to only a slight extent, and does not affect the differential rate of synthesis of beta-galactosid...

Enrichment cultures of phototrophic purple bacteria rapidly oxidized up to 10 mM dimethyl sulfide (DMS) to dimethyl sulfoxide (DMSO). DMSO was qualitatively identified by proton nuclear magnetic resonance. By using a biological assay, DMSO was always quantitatively recovered from the culture media. DMS oxidation was not detected in cultures incubated in the dark, and it was slow in cultures exp...

Poly(ADP-ribose) polymerase-1 (PARP-1; EC 2.4.2.30), also termed as poly(ADP-ribose) synthetase, is a key enzyme in the recognition and repair of damaged DNA. Several conditions (e.g., ischemia-reperfusion or chemical-induced injury) have been shown to overactivate PARP-1, causing neurodegeneration and necrotic or apoptotic cell death from NAD+ and ATP depletion. In contrast, inhibitors of PARP...