Oxygen (Basel, Switzerland)最新文献_第4页

The Pro-Oxidant Effect of Class A CpG ODNs on Human Neutrophils Includes Both Non-Specific Stimulation of ROS Production and Structurally Determined Induction of NO Synthesis A类CpG ODNs对人中性粒细胞的促氧化作用包括对ROS产生的非特异性刺激和结构决定的NO合成诱导

Oxygen (Basel, Switzerland) Pub Date : 2023-01-02 DOI: 10.3390/oxygen3010002

E. Golenkina, S. Galkina, G. Viryasova, G. Sud’ina

引用次数: 0

Effect of Water-Soluble Chlorine-Containing Buckminsterfullerene Derivative on the Metabolism of Reactive Oxygen Species in Human Embryonic Lung Fibroblasts 水溶性氯对人胚肺成纤维细胞活性氧代谢的影响

Oxygen (Basel, Switzerland) Pub Date : 2022-12-27 DOI: 10.3390/oxygen3010001

E. Savinova, T. Salimova, E. Proskurnina, I. V. Rodionov, O. Kraevaya, P. Troshin, L. Kameneva, E. Malinovskaya, O. Dolgikh, N. Veiko, S. Kostyuk

引用次数: 0

Pros and Cons of Two Methods of Anaerobic Alactic Energy Assessment in a High-Intensity CrossFit® Workout 高强度CrossFit®训练中两种厌氧能评估方法的利弊

Oxygen (Basel, Switzerland) Pub Date : 2022-12-17 DOI: 10.3390/oxygen2040042

Manoel Rios, V. Reis, Susana Soares, D. Moreira-Gonçalves, R. Fernandes

{"title":"Pros and Cons of Two Methods of Anaerobic Alactic Energy Assessment in a High-Intensity CrossFit® Workout","authors":"Manoel Rios, V. Reis, Susana Soares, D. Moreira-Gonçalves, R. Fernandes","doi":"10.3390/oxygen2040042","DOIUrl":"https://doi.org/10.3390/oxygen2040042","url":null,"abstract":"The current study aimed to evidence the strengths and weaknesses of two indirect methods for assessing the anaerobic alactic contribution to a specific CrossFit® workout. Thirty experienced crossfitters performed the Fran workout at maximal intensity, and ventilatory data were collected during the recovery period using a telemetric portable gas analyser to assess the oxygen uptake (VO2) of the off-kinetics fast component (Anarecovery). The kinetics of maximal phosphocreatine splitting (AnaPCr) were determined based on the literature. No differences between the two methods were observed (31.4 ± 4.0 vs. 30.4 ± 4.1 kJ for Anarecovery and AnaPCr, respectively). Despite the existence of some caveats (e.g., errors derived from a delay at the onset of VO2 recovery and the assumption of given values in the concentration of phosphocreatine per kilogram of wet muscle, respectively) in both methods, the data indicate that they yield similar results and allow for estimations of alactic energy contribution from a short-duration and high intensity CrossFit® routine. The current data contributes to CrossFit® workout evaluations and training strategies, helping researchers to evaluate crossfitters more accurately. The advantage of the two methods used in the current study is that they are non-invasive, which differs greatly from muscle biopsies.","PeriodicalId":74387,"journal":{"name":"Oxygen (Basel, Switzerland)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47873834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Complete Recovery of an Iatrogenic Venous Gaseous Embolism (VGE) Clinical Presentation Thanks to a Timely Hyperbaric Oxygen Therapy (HBOT) Treatment 医源性静脉气体栓塞(VGE)临床表现的完全恢复归功于及时的高压氧治疗(HBOT)

Oxygen (Basel, Switzerland) Pub Date : 2022-12-15 DOI: 10.3390/oxygen2040041

V. Zanon, S. Magri, G. Bonera, E. Camporesi

引用次数: 0

Lag Time Determinations in Beer Samples. Influence of Alcohol and PBN Concentration in EPR Spin Trapping Experiments 啤酒样品中滞后时间的测定。醇和PBN浓度对EPR自旋俘获实验的影响

Oxygen (Basel, Switzerland) Pub Date : 2022-11-18 DOI: 10.3390/oxygen2040040

M. Porcu, A. Fadda, D. Sanna

{"title":"Lag Time Determinations in Beer Samples. Influence of Alcohol and PBN Concentration in EPR Spin Trapping Experiments","authors":"M. Porcu, A. Fadda, D. Sanna","doi":"10.3390/oxygen2040040","DOIUrl":"https://doi.org/10.3390/oxygen2040040","url":null,"abstract":"The beers’ lag time measured with the PBN (N-t-Butyl-α-phenylnitrone) spin trapping experiments coupled with EPR spectroscopy is related to their antioxidant capacity and shelf life. The effect on the lag time of the alcohol content of the beer (starting values, 9 and 13%) and PBN concentration (50 or 200 mM) was analyzed on three samples, a pilsner, a strong lager, and a blonde Ale heated at 60 °C to trigger the production of the 1-hydroxyethyl radical. The lag time was determined only for the strong lager beer, with the values depending on the experimental conditions, being higher when PBN had a lower concentration. The antioxidant activity of the three beers gave the following values: 0.9089 mL pilsner beer/mg DPPH, 0.8510 mL strong lager beer/mg DPPH, and 0.7184 mL blonde Ale beer/mg DPPH, indicating that the unsuccessful determination of the lag time was not due to stale beers. The EPR intensity of the PBN adduct after 150 min (I150) and the area under the curve (AUC) were also measured and related to the oxidative stability of beers. Further studies are needed to verify the influence of the heating temperature in samples that do not show a lag time at 60 °C.","PeriodicalId":74387,"journal":{"name":"Oxygen (Basel, Switzerland)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41659656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nanoparticles, a Double-Edged Sword with Oxidant as Well as Antioxidant Properties—A Review 纳米颗粒是一把既有氧化剂又有抗氧化性能的双刃剑——综述

Oxygen (Basel, Switzerland) Pub Date : 2022-11-15 DOI: 10.3390/oxygen2040039

A. Samrot, Sanjay Preeth Ram Singh, R. Deenadhayalan, Vinod Vincent Rajesh, Sathiyamoorthy Padmanaban, K. Radhakrishnan

引用次数: 17

Understanding Hydrogen: Lessons to Be Learned from Physical Interactions between the Inert Gases and the Globin Superfamily 理解氢：从惰性气体和球蛋白超家族之间的物理相互作用中学到的教训

Oxygen (Basel, Switzerland) Pub Date : 2022-11-08 DOI: 10.3390/oxygen2040038

J. Hancock, Grace Russell, T. Craig, J. May, H. Morse, J. Stamler

{"title":"Understanding Hydrogen: Lessons to Be Learned from Physical Interactions between the Inert Gases and the Globin Superfamily","authors":"J. Hancock, Grace Russell, T. Craig, J. May, H. Morse, J. Stamler","doi":"10.3390/oxygen2040038","DOIUrl":"https://doi.org/10.3390/oxygen2040038","url":null,"abstract":"Hydrogen gas (molecular hydrogen, H2) has significant effects in a range of organisms, from plants to humans. Many inert gases have been reported to have similar effects, and such responses may be most pronounced when cells are stressed. Xenon (Xe), for example, is a well-known anesthetic. The direct targets of these gases, in most cases, remain elusive. Myoglobin and hemoglobin are known for their roles in the transport of gases through coordinate interactions with metals (O2, NO, CO) and covalent modifications of thiols (NO, H2S) and amines (CO2). These are well exemplified in biotrophic reactions of NO with heme iron (to form iron nitrosyl heme) and cysteine (to form bioactive S-nitrosothiols) essential for tissue oxygenation. Here, we consider an alternative “third mode” of gas transport in what have been dubbed “Xenon pockets”, whereby inert gases may have functional effects. Many proteins have similar cavities, and possible effects include alterations in allosteric properties of proteins (potentially altering protein hydration). Here, it is suggested that similar to other inert gases, H2 also has biological effects by utilizing these protein structures. This ought to be investigated further, in a range of species, to determine if this is the mode of action of H2.","PeriodicalId":74387,"journal":{"name":"Oxygen (Basel, Switzerland)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45304544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Effects of Acute Beetroot Juice Ingestion on Reactive Agility Performance 甜菜根汁急性摄入对反应敏捷性的影响

Oxygen (Basel, Switzerland) Pub Date : 2022-11-07 DOI: 10.3390/oxygen2040037

R. Rogers, Ashleigh M. Davis, Ashley E. Rice, C. Ballmann

{"title":"Effects of Acute Beetroot Juice Ingestion on Reactive Agility Performance","authors":"R. Rogers, Ashleigh M. Davis, Ashley E. Rice, C. Ballmann","doi":"10.3390/oxygen2040037","DOIUrl":"https://doi.org/10.3390/oxygen2040037","url":null,"abstract":"Beetroot juice (BRJ) is high in inorganic nitrate (NO3) which has been shown to enhance vascular function, cognition, and physical performance. Acute BRJ supplementation has been reported to enhance explosive resistance exercise performance and simple reaction time in diseased populations. However, it remains unknown if acute BRJ supplementation can enhance agility and reactive drills in healthy individuals, which are relevant to many sports. The purpose of this study was to investigate the effects of acute BRJ supplementation on simple reaction time and reactive agility performance. In a counterbalanced double-blinded manner, physically active males completed two trials each with a differing single-dose treatment: (1) Placebo (PL), (2) BRJ. Each treatment was consumed 2-hrs before experimental testing. Plasma Nitrate (NO3) and Nitrite (NO2) were measured via capillary blood sampling and colorimetric assay. Reaction time was assessed using a simple reaction time light test. Reactive agility was measured via a semi-circle drill and a get-up-and-go drill. All tests used FITLIGHT LED sensors to record response time. Each visit was separated by a 72-h washout period. Acute BRJ ingestion resulted in significantly greater plasma NO3 (p < 0.001) and NO2 (p = 0.008) compared to PL. BRJ significantly improved response time during the semi-circle drill (p = 0.011) and get-up and go drill (p = 0.027) compared to PL. No differences between treatments were observed for simple reaction time (p = 0.279). Collectively, these findings suggest that acute BRJ ingestion may improve reactive agility performance likely mediated by systemic increases in NO3/NO2. Future research is needed to investigate how these findings translate to game-play and sports competition.","PeriodicalId":74387,"journal":{"name":"Oxygen (Basel, Switzerland)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42897028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Oxidative Stress as an Underlying Mechanism of Bacteria-Inflicted Damage to Male Gametes 氧化应激是细菌对雄性配子损伤的潜在机制

Oxygen (Basel, Switzerland) Pub Date : 2022-11-06 DOI: 10.3390/oxygen2040036

E. Tvrdá, F. Benko, M. Ďuračka

引用次数: 6

Optimization of Pulsed Electric-Field-Based Total Polyphenols’ Extraction from Elaeagnus pungens ‘Limelight’ Leaves Using Hydroethanolic Mixtures 基于脉冲电场的水乙醇混合物提取胡颓子‘Limelight’叶中总多酚的工艺优化

Oxygen (Basel, Switzerland) Pub Date : 2022-10-31 DOI: 10.3390/oxygen2040035

Vasileios M. Pappas, D. Palaiogiannis, V. Athanasiadis, Theodoros G. Chatzimitakos, Eleni Bozinou, D. Makris, S. Lalas

{"title":"Optimization of Pulsed Electric-Field-Based Total Polyphenols’ Extraction from Elaeagnus pungens ‘Limelight’ Leaves Using Hydroethanolic Mixtures","authors":"Vasileios M. Pappas, D. Palaiogiannis, V. Athanasiadis, Theodoros G. Chatzimitakos, Eleni Bozinou, D. Makris, S. Lalas","doi":"10.3390/oxygen2040035","DOIUrl":"https://doi.org/10.3390/oxygen2040035","url":null,"abstract":"In this study, the use of pulsed electric field (PEF) for the extraction of polyphenols from mature Elaeagnus pungens ‘Limelight’ leaves is discussed. Optimization of the main parameters that affect the extraction process was carried out. More specifically, the composition of the solvent (ethanol, water, and mixtures of the two at a 25% v/v step gradient) and the main PEF-related parameters (i.e., pulse duration, pulse period, and electric field intensity) was optimized. The obtained extracts were examined for their polyphenol content with the Folin–Ciocalteu assay and individual polyphenols were also assessed with high-performance liquid chromatography. The extracts obtained with PEF were compared to the extract compared without PEF, in terms of total polyphenols. According to the results, the optimum extraction parameters were found to be a pulse duration of 10 μs, a pulse period of 1000 μs, and an electric field intensity of 0.85 kV cm−1 after 20 min of extraction. The optimum solvent was found to be the 50% (v/v) ethanol/water mixture. The extract prepared under the optimum conditions was found to contain 58% more polyphenols compared with the extract prepared without PEF. Moreover, an increase of up to 92% was recorded for specific polyphenols. Based on the above, it was evidenced that the examined parameters influenced the recovery of polyphenols, suggesting that such parameters should be also examined in similar studies, in order to maximize the extraction yield of polyphenols.","PeriodicalId":74387,"journal":{"name":"Oxygen (Basel, Switzerland)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45653883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2