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Molecules (Basel, Switzerland) Apr 2022A -(2-methoxy-2-oxoethyl)--(phenylsulfonyl)glycine monomethyl ester of the respective dicarboxylic acid was involved in a reaction with imines promoted by acetic...
A -(2-methoxy-2-oxoethyl)--(phenylsulfonyl)glycine monomethyl ester of the respective dicarboxylic acid was involved in a reaction with imines promoted by acetic anhydride at an elevated temperature. Instead of the initially expected δ-lactam products of the Castagnoli-Cushman-type reaction, medicinally important 3-amino-2-azetidinones were obtained as the result of cyclization, involving a methylene group adjacent to an acid moiety. In contrast, replacing alcohol residue with hexafluoroisopropyl in the same substrate made another methylene group (adjacent to the ester moiety) more reactive to furnishing the desired δ-lactam in the Castagnoli-Cushman fashion.
Topics: Cyclization; Dicarboxylic Acids; Esters; Imines; Lactams
PubMed: 35458663
DOI: 10.3390/molecules27082469 -
Journal of Translational Medicine Sep 2017This review based on translational research predicts that the transcription factor p53 is the key effector of all anti-acne therapies. All-trans retinoic acid (ATRA) and... (Review)
Review
This review based on translational research predicts that the transcription factor p53 is the key effector of all anti-acne therapies. All-trans retinoic acid (ATRA) and isotretinoin (13-cis retinoic acid) enhance p53 expression. Tetracyclines and macrolides via inhibiting p450 enzymes attenuate ATRA degradation, thereby increase p53. Benzoyl peroxide and hydrogen peroxide elicit oxidative stress, which upregulates p53. Azelaic acid leads to mitochondrial damage associated with increased release of reactive oxygen species inducing p53. p53 inhibits the expression of androgen receptor and IGF-1 receptor, and induces the expression of IGF binding protein 3. p53 induces FoxO1, FoxO3, p21 and sestrin 1, sestrin 2, and tumour necrosis factor-related apoptosis-inducing ligand (TRAIL), the key inducer of isotretinoin-mediated sebocyte apoptosis explaining isotretinoin's sebum-suppressive effect. Anti-androgens attenuate the expression of miRNA-125b, a key negative regulator of p53. It can thus be concluded that all anti-acne therapies have a common mode of action, i.e., upregulation of the guardian of the genome p53. Immortalized p53-inactivated sebocyte cultures are unfortunate models for studying acne pathogenesis and treatment.
Topics: Acne Vulgaris; Dicarboxylic Acids; Humans; Isotretinoin; Models, Biological; Photochemotherapy; Tetracyclines; Tumor Suppressor Protein p53
PubMed: 28927457
DOI: 10.1186/s12967-017-1297-2 -
Current Atherosclerosis Reports Mar 2024Bempedoic acid is a novel therapeutic agent that is designed to reduce levels of low-density lipoprotein cholesterol (LDL-C). The purpose of this review is to provide... (Review)
Review
PURPOSE OF REVIEW
Bempedoic acid is a novel therapeutic agent that is designed to reduce levels of low-density lipoprotein cholesterol (LDL-C). The purpose of this review is to provide the background for development of bempedoic acid, findings from clinical trials and to discuss clinical implications.
RECENT FINDINGS
Bempedoic acid inhibits ATP citrate lyase within the liver and reduces cholesterol synthesis, with the potential to avoid muscle symptoms experienced by patients treated with statins. Early clinical studies demonstrated that administration of bempedoic acid resulted in lowering of LDL-C by 20-30% as monotherapy and by 40-50% when combined with ezetimibe, in addition to lowering of high sensitivity C-reactive protein by 20-30%. The CLEAR Outcomes trial of high cardiovascular risk patients, with elevated LDL-C levels and either unable or unwilling to take statins demonstrated that bempedoic acid reduced the rate of major adverse cardiovascular events. A greater incidence of elevation of hepatic transaminase and creatinine, gout, and cholelithiasis were consistently observed in bempedoic acid-treated patients. Bempedoic acid presents an additional therapeutic option to achieve more effective lowering of LDL-C levels and reduction in cardiovascular risk.
Topics: Humans; Hydroxymethylglutaryl-CoA Reductase Inhibitors; Cholesterol, LDL; Fatty Acids; Dicarboxylic Acids
PubMed: 38294660
DOI: 10.1007/s11883-024-01188-5 -
Biochemical and Biophysical Research... Jan 20213-methylglutaconic (3MGC) aciduria is associated with a growing number of discrete inborn errors of metabolism. Herein, an antibody-based approach to...
3-methylglutaconic (3MGC) aciduria is associated with a growing number of discrete inborn errors of metabolism. Herein, an antibody-based approach to detection/quantitation of 3MGC acid has been pursued. When trans-3MGC acid conjugated keyhole limpet hemocyanin (KLH) was inoculated into rabbits a strong immune response was elicited. Western blot analysis provided evidence that immune serum, but not pre-immune serum, recognized 3MGC-conjugated bovine serum albumin (BSA). In competition ELISAs using isolated immune IgG, the limit of detection for free trans-3MGC acid was compared to that for cis-3MGC acid and four structurally related short-chain dicarboxylic acids. Surprisingly, cis-3MGC acid yielded a much lower limit of detection (∼0.1 mg/ml) than trans-3MGC acid (∼1.0 mg/ml) while all other dicarboxylic acids tested were poor competitors. The data suggest trans-3MGC- isomerized during, or after, conjugation to KLH such that the immunogen was actually comprised of KLH harboring a mixture of cis- and trans-3MGC haptens. To investigate this unexpected isomerization reaction, trans-3MGC CoA was prepared and incubated at 37 °C in the presence of BSA. Evidence was obtained that non-enzymatic isomerization of trans-3MGC CoA to cis-3MGC CoA precedes intramolecular catalysis to form cis-3MGC anhydride plus CoASH. Anhydride-dependent acylation of BSA generated 3MGCylated BSA, as detected by anti-3MGC immunoblot. The results presented provide an explanation for the unanticipated detection of 3MGCylated proteins in a murine model of primary 3MGC aciduria. Furthermore, non-enzymatic hydrolysis of cis-3MGC anhydride represents a potential source of cis-3MGC acid found in urine of subjects with 3MGC aciduria.
Topics: Acylation; Animals; Coenzyme A; Dicarboxylic Acids; Glutarates; Haptens; Hemocyanins; Hot Temperature; Immune Sera; Immunoglobulin G; Isomerism; Rabbits; Serum Albumin, Bovine
PubMed: 33280817
DOI: 10.1016/j.bbrc.2020.11.100 -
Chemical & Pharmaceutical Bulletin 2018Axially chiral binaphthothiophene dicarboxylic acid was prepared as a novel functionalized chiral dicarboxylic acid. The crystal structures of both the racemic form and...
Axially chiral binaphthothiophene dicarboxylic acid was prepared as a novel functionalized chiral dicarboxylic acid. The crystal structures of both the racemic form and its salt with chiral diamine revealed the intramolecular S···O interactions (chalcogen bonds) between the sulfur in the naphthothiophene rings and the oxygen of the carboxy groups. The negative-positive and the positive-negative Cotton effects from longer to shorter wavelengths were observed for (R)- and (S)-enantiomers, respectively, in the circular dichroism (CD) spectra.
Topics: Dicarboxylic Acids; Models, Molecular; Molecular Structure; Stereoisomerism; Thiophenes
PubMed: 30504635
DOI: 10.1248/cpb.c18-00668 -
British Journal of Clinical Pharmacology Mar 2013Even-number, medium-chain dicarboxylic acids (DAs), naturally occurring in higher plants, are a promising alternative energy substrate. Unlike the homologous fatty... (Review)
Review
Even-number, medium-chain dicarboxylic acids (DAs), naturally occurring in higher plants, are a promising alternative energy substrate. Unlike the homologous fatty acids, DAs are soluble in water as salts. They are β-oxidized, providing acetyl-CoA and succinyl-CoA, the latter being an intermediate of the tricarboxylic acid cycle. Sebacic acid and dodecanedioic acid, DAs with 10 and 12 carbon atoms respectively, provide 6.6 and 7.2 kcal g⁻¹ each; therefore, their energy density is intermediate between glucose and fatty acids. Dicarboxylic acids have been proved to be safe in both experimental animals and humans, and their use has recently been proposed in diabetes. Studies in animals and humans with type 2 diabetes showed that oral administration of sebacic acid improved glycaemic control, probably by enhancing insulin sensitivity, and reduced hepatic gluconeogenesis and glucose output. Moreover, dodecanedioic acid intake reduced muscle fatigue during exercise in subjects with type 2 diabetes, suggesting an improvement of energy utilization and 'metabolic flexibility'. In this article, we review the natural sources of DAs, their fate in animals and humans and their effect in improving glucose metabolism in type 2 diabetes.
Topics: Animals; Blood Glucose; Decanoic Acids; Diabetes Mellitus, Type 2; Dicarboxylic Acids; Gluconeogenesis; Humans; Insulin Resistance; Muscle Fatigue; Nutritive Value
PubMed: 22242741
DOI: 10.1111/j.1365-2125.2012.04177.x -
CMAJ : Canadian Medical Association... Dec 2016
Topics: Acne Vulgaris; Age of Onset; Anti-Bacterial Agents; Benzoyl Peroxide; Dermatologic Agents; Dicarboxylic Acids; Humans; Infant; Male; Retinoids
PubMed: 27873756
DOI: 10.1503/cmaj.160139 -
Clinical and Translational Science Mar 2022Bempedoic acid is an ATP citrate lyase inhibitor approved for the treatment of hypercholesterolemia. The objective of this phase I study was to assess the...
Bempedoic acid is an ATP citrate lyase inhibitor approved for the treatment of hypercholesterolemia. The objective of this phase I study was to assess the pharmacokinetics (PKs) and safety of bempedoic acid in 24 subjects with normal renal function or mild, moderate, or severe renal impairment. All subjects received a single oral bempedoic acid 180-mg dose and PK parameters were monitored for up to 23 days. Resulting estimates of area under the concentration-time curve exposure following bempedoic acid treatment were 1.5-fold, 2.2-fold, and 2.2-fold higher in subjects with mild, moderate, or severe renal impairment, respectively, compared with subjects with normal renal function. With decreases in renal function, plasma free fraction was increased up to 20.1%, whereas total and unbound clearances were decreased by 55.2% and 62.6%, respectively, in subjects with severe renal impairment relative to those with normal renal function. These observed decreases in total and unbound oral clearance in subjects with decreased renal function are not explained by the increases in free fraction and might therefore also be attributable to changes in bioavailability or intrinsic clearance. Bempedoic acid was generally well-tolerated and the incidence and type of adverse events were not affected by the degree of renal impairment. In conclusion, bempedoic acid exposures in subjects with renal impairment were increased up to approximately two-fold with no safety signals identified, consistent with findings in phase III patients with mild or moderate renal impairment. No dose adjustments are necessary for patients with mild or moderate renal impairment.
Topics: Area Under Curve; Dicarboxylic Acids; Fatty Acids; Female; Humans; Male; Renal Insufficiency
PubMed: 34800002
DOI: 10.1111/cts.13202 -
JAMA Nov 2019
Topics: Cardiovascular Diseases; Cholesterol, LDL; Dicarboxylic Acids; Fatty Acids; Humans; Hydroxymethylglutaryl-CoA Reductase Inhibitors
PubMed: 31714973
DOI: 10.1001/jama.2019.16598 -
Bioengineered Dec 2020The major drawback of chemical transformations for the production of 2, 5-furan dicarboxylic acid (FDCA) implies the usage of hazardous chemicals, high temperature and... (Review)
Review
The major drawback of chemical transformations for the production of 2, 5-furan dicarboxylic acid (FDCA) implies the usage of hazardous chemicals, high temperature and high pressure from nonrenewable resources. Alternate to chemical methods, biological methods are promising. Microbial FDCA production is improved through engineering approaches of media conditions, homologous and heterologous expression of genes, genetic and metabolic engineering, etc. The highest FDCA production of 41.29 g/L is observed by an engineered BF 60 from 35 g/L HMF in sodium phosphate buffer with a 95.14% yield in 72 h. Also, an enzyme cascade system of recombinant and wild enzymes like periplasmic aldehyde oxidase ABC, galactose oxidase M3-5, HRP and catalase have transformed 6.3 g/L HMF to 7.81 g/L FDCA in phosphate buffer with 100% yield in 6 h. Still, these processes are emerging for fulfilling the industrial needs due to the challenges in 'green FDCA production'.
Topics: Dicarboxylic Acids; Enterobacteriaceae; Fermentation; Furans; Metabolic Engineering
PubMed: 31880190
DOI: 10.1080/21655979.2019.1700093