carboxylic acid/atrophy

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Carboxylic acid derivatives of histone deacetylase inhibitors induce full length SMN2 transcripts: a promising target for spinal muscular atrophy therapeutics.

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BACKGROUND Proximal spinal muscular atrophy (SMA) is a common autosomal recessively inherited neuromuscular disorder. It is caused by homozygous absence of the survival motor neuron 1 (SMN1) gene. SMN2, which modulates the severity of the disease, represents a major target for therapy. The aim of

Differential expression of two 1-aminocyclopropane-1-carboxylic acid oxidase genes in broccoli after harvest.

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Broccoli (Brassica oleracea L.) floral tissues rapidly differentiate and grow before harvest and then senesce rapidly after harvest. Associated with this postharvest deterioration is an increase in ethylene production by florets. Two cDNA clones having high nucleotide identity to sequences encoding

Separation of furans and carboxylic acids from sugars in dilute acid rice straw hydrolyzates by nanofiltration.

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This work studied the concentration of hydrolyzates obtained from dilute acid hydrolysis of rice straw using nanofiltration (NF). In order to minimize the Donnan exclusion effect of the membrane, the hydrolyzate solution was controlled at low pH value. Negative retentions of both furans and

Functional changes in rat nigral GABA(A) receptors induced by degeneration of the striatonigral GABAergic pathway: an electrophysiological study of receptors incorporated into Xenopus oocytes.

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Expression of rat brain gamma-aminobutyric acid type A (GABA(A)) receptors in Xenopus laevis oocytes can be achieved by injection of the oocytes with synaptosomes. This approach has now been applied to evaluate changes in the function of nigral GABA(A) receptors after degeneration of the

Involvement of Calcium and Calmodulin in Membrane Deterioration during Senescence of Pea Foliage.

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The prospect that Ca(2+) promotes senescence by activating calmodulin has been examined using cut pea (Pisum sativum co Alaska) foliage as a model system. Senescence was induced by severing 17-day-old plants from their roots and maintaining them in aqueous test solutions in the dark for an

L-2-oxothiazolidine-4-carboxylic acid attenuates oxidative stress and inflammation in retinal pigment epithelium.

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OBJECTIVE Oxidant- and inflammation-induced damage to retinal pigment epithelial (RPE) cells is central to the pathogenesis of age-related macular degeneration (AMD). Thus, developing novel strategies to protect these cells is important. We reported previously on the robust antioxidant and therefore

Equilibrium in the Catalytic Condensation of Carboxylic Acids with Methyl Ketones to 1,3-Diketones and the Origin of the Reketonization Effect.

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Acetone is the expected ketone product of an acetic acid decarboxylative ketonization reaction with metal oxide catalysts used in the industrial production of ketones and for biofuel upgrade. Decarboxylative cross-ketonization of a mixture of acetic and isobutyric acids yields highly valued

Rapid and robust confirmation and quantification of 11-nor-Δ9-tetrahydrocannabinol-9-carboxylic acid (THC-COOH) in urine by column switching LC-MS-MS analysis.

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A method for the rapid and robust confirmation of 11-nor-∆9-tetrahydrocannabinol-9-carboxylic acid (THCA) in urine involving basic hydrolysis with NaOH and direct injection of the hydrolysate in a column-switching LC-MS-MS system was developed and validated. THCA-d3 was used as internal standard.

NMDA antagonist activity of (+/-)-(2SR,4RS)-4-(1H-tetrazol-5-ylmethyl)piperidine-2-carboxylic acid resides with the (-)-2R,4S-isomer.

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The tetrazole-substituted amino acid (+/-)-(2SR,4RS)-4-(1H-tetrazol-5-ylmethyl)pip eri dine-2-carboxylic acid (LY233053, (+/-)-1) was resolved into its constituent enantiomers by treatment of a key intermediate in the synthesis of the racemic amino acid, ethyl

A solid-state NMR, X-ray diffraction, and ab initio computational study of hydrogen-bond structure and dynamics of pyrazole-4-carboxylic acid chains.

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Using high-resolution solid-state (15)N CMAS NMR, X-ray crystallography, and ab initio calculations, we have studied the structure of solid pyrazole-4-carboxylic acid (1). The crystal structure was determined at 295 and 150 K. Molecules of 1 are located on a two-fold axis, implying proton disorder

L-2-oxothiazolidine-4-carboxylic acids slow down dialysate-induced senescence in human peritoneal mesothelial cells.

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Peritoneal dialysis induces an intraperitoneal inflammatory reaction, which in the long term may cause deterioration of the peritoneal structure and function as the dialysis membrane. We studied the effect of the overnight effluent dialysate from patients on chronic peritoneal dialysis on aging of

An investigation of the stability of free and glucuronidated 11-nor-delta9-tetrahydrocannabinol-9-carboxylic acid in authentic urine samples.

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Preanalytical stability of a drug and its major metabolites is an important consideration in pharmacokinetic studies or whenever the analyte pattern is used to estimate drug habits. Firstly, the stability of free and glucuronidated 11-nor-delta9-tetrahydrocannabinol-9-carboxylic acid (THCCOOH,

Design, synthesis, and evaluation of nonretinoid retinol binding protein 4 antagonists for the potential treatment of atrophic age-related macular degeneration and Stargardt disease.

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Accumulation of lipofuscin in the retina is associated with pathogenesis of atrophic age-related macular degeneration and Stargardt disease. Lipofuscin bisretinoids (exemplified by N-retinylidene-N-retinylethanolamine) seem to mediate lipofuscin toxicity. Synthesis of lipofuscin bisretinoids depends

Macular xanthophylls and ω-3 long-chain polyunsaturated fatty acids in age-related macular degeneration: a randomized trial.

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OBJECTIVE It has been shown that the functionality of the macula lutea depends on the nutritional uptake of lutein and zeaxanthin and that it is inversely associated with the risk of age-related macular degeneration (AMD). Additionally, ω-3 long-chain polyunsaturated fatty acids (LC-PUFAs) may also

Abnormal mTORC1 signaling leads to retinal pigment epithelium degeneration.

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Retinal pigment epithelial (RPE) degeneration is potentially involved in the pathogenesis of several retinal degenerative diseases. mTORC1 signaling is shown as a crucial regulator of many biological processes and disease progression. In this study, we aimed at investigating the role of mTORC1

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