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Antioxidants, Volume 10, Issue 1

January 2021 - 138 articles

Cover Story: The enzyme CYP1A2 is responsible for the metabolism of caffeine into paraxanthine. Both molecules are known for their antioxidant and pro-oxidant characteristics, and the paraxanthine-to-caffeine molar ratio is a widely accepted metric for CYP1A2 phenotyping for optimizing dose–response effects in individual patients. This work presents the simultaneous quantification of caffeine and paraxanthine in spiked human saliva samples by differential pulse voltammetry using an anodically pretreated glassy carbon electrode. Potential applicability of the sensing platform was demonstrated by running a small-scale trial on five healthy volunteers. The results were validated by ultra-high-pressure liquid chromatography and shown to have a high correlation factor (r = 0.994). View this paper
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Articles (138)

  • Article
  • Open Access
9 Citations
4,288 Views
19 Pages

The Positive Allosteric Modulation of alpha7-Nicotinic Cholinergic Receptors by GAT107 Increases Bacterial Lung Clearance in Hyperoxic Mice by Decreasing Oxidative Stress in Macrophages

  • Alex G. Gauthier,
  • Jiaqi Wu,
  • Mosi Lin,
  • Ravikumar Sitapara,
  • Abhijit Kulkarni,
  • Ganesh A. Thakur,
  • Edward E. Schmidt,
  • Jeanette C. Perron,
  • Charles R. Ashby and
  • Lin L. Mantell

19 January 2021

Supplemental oxygen therapy with supraphysiological concentrations of oxygen (hyperoxia; >21% O2) is a life-saving intervention for patients experiencing respiratory distress. However, prolonged exposure to hyperoxia can compromise bacterial clear...

  • Article
  • Open Access
24 Citations
5,679 Views
22 Pages

19 January 2021

Background: Formyl peptide receptor 2 (FPR2) is involved in the pathogenesis of chronic inflammatory diseases, being activated either by pro-resolving or proinflammatory ligands. FPR2-associated signal transduction pathways result in phosphorylation...

  • Article
  • Open Access
13 Citations
4,081 Views
18 Pages

19 January 2021

Candida albicans is one of the most common opportunistic fungal pathogens in human beings. When infecting host cells, C. albicans is often exposed to oxidative stress from the host immune defense system. Maintenance of mitochondrial and vacuolar func...

  • Article
  • Open Access
12 Citations
4,241 Views
11 Pages

Assessment of the Telomere Length and Its Effect on the Symptomatology of Parkinson’s Disease

  • Tina Levstek,
  • Sara Redenšek,
  • Maja Trošt,
  • Vita Dolžan and
  • Katarina Trebušak Podkrajšek

19 January 2021

Telomeres, which are repetitive sequences that cap the end of the chromosomes, shorten with each cell division. Besides cellular aging, there are several other factors that influence telomere length (TL), in particular, oxidative stress and inflammat...

  • Article
  • Open Access
29 Citations
6,994 Views
17 Pages

Microdose Lithium Protects against Pancreatic Islet Destruction and Renal Impairment in Streptozotocin-Elicited Diabetes

  • Jiahui Zhang,
  • Fnu Anshul,
  • Deepak K. Malhotra,
  • Juan Jaume,
  • Lance D. Dworkin and
  • Rujun Gong

19 January 2021

Psychiatric use of lithium has been associated with hypoglycemic effects, but its effect on type 1 diabetes mellitus (T1D) is unknown. In streptozotocin (STZ) induced murine models of T1D, microdose lithium therapy improved hyperglycemia, attenuated...

  • Article
  • Open Access
62 Citations
8,618 Views
19 Pages

Antioxidant and Cytoprotective Potential of the Essential Oil Pistacia lentiscus var. chia and Its Major Components Myrcene and α-Pinene

  • Vasileios Xanthis,
  • Eleni Fitsiou,
  • Georgia-Persephoni Voulgaridou,
  • Athanasios Bogadakis,
  • Katerina Chlichlia,
  • Alex Galanis and
  • Aglaia Pappa

18 January 2021

The antioxidant, cytoprotective, and wound-healing potential of the essential oil from the resin of Pistacia lentiscus var. chia (mastic oil) was evaluated, along with that of its major components, myrcene and α-pinene. Antioxidant potential wa...

  • Review
  • Open Access
52 Citations
9,586 Views
21 Pages

Catalytic Antioxidants in the Kidney

  • Yu Ah Hong and
  • Cheol Whee Park

18 January 2021

Reactive oxygen species and reactive nitrogen species are highly implicated in kidney injuries that include acute kidney injury, chronic kidney disease, hypertensive nephropathy, and diabetic nephropathy. Therefore, antioxidant agents are promising t...

  • Article
  • Open Access
5 Citations
3,669 Views
12 Pages

The Influence of a Conjugated Pneumococcal Vaccination on Plasma Antibody Levels against Oxidized Low-Density Lipoprotein in Metabolic Disease Patients: A Single-Arm Pilot Clinical Trial

  • Ronit Shiri-Sverdlov,
  • Inês Magro dos Reis,
  • Yvonne Oligschlaeger,
  • Tim Hendrikx,
  • Dennis M. Meesters,
  • Annick Vanclooster,
  • Nele Vanhoutvin,
  • Ger H. Koek,
  • Marit Westerterp and
  • Christoph J. Binder
  • + 2 authors

18 January 2021

As a mediator between lipid metabolism dysfunction, oxidative stress and inflammation, oxidized low-density lipoprotein (oxLDL) is a promising therapeutical target in a wide range of metabolic diseases. In mice, pneumococcal immunization increases an...

  • Article
  • Open Access
6 Citations
3,529 Views
11 Pages

Oxidised LDL and Anti-Oxidised LDL Antibodies Are Reduced by Lipoprotein Apheresis in a Randomised Controlled Trial on Patients with Refractory Angina and Elevated Lipoprotein(a)

  • Tina Z. Khan,
  • Adam Hartley,
  • Dorian Haskard,
  • Mikhail Caga-Anan,
  • Dudley J. Pennell,
  • Peter Collins,
  • Mahmoud Barbir and
  • Ramzi Khamis

18 January 2021

Aims: An abundance of epidemiological evidence demonstrates that elevated lipoprotein(a) (Lp(a)) represents a significant contributing risk factor towards the development of cardiovascular disease. In particular, raised Lp(a) may play a mechanistic r...

  • Article
  • Open Access
44 Citations
6,420 Views
22 Pages

18 January 2021

The antioxidant activities of Japanese knotweed rhizome bark extracts, prepared with eight different solvents or solvent mixtures (water, methanol, 80% methanol(aq), acetone, 70% acetone(aq), ethanol, 70% ethanol(aq), and 90% ethyl acetate(aq)), were...

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Antioxidants - ISSN 2076-3921