scholarly journals Changes in Antioxidant Activity in Developing and Ripening Strawberry Fruit

HortScience ◽  
2000 ◽  
Vol 35 (4) ◽  
pp. 568D-568c ◽  
Author(s):  
F.M. Woods ◽  
C. Mosjidis ◽  
D. Hilmerick ◽  
R.C Ebel ◽  
B. Wilkins
Keyword(s):  
Lipid Peroxidation ◽  
Antioxidant Activity ◽  
Lipid Peroxidation Product ◽  
Total Antioxidant Activity ◽  
Strawberry Fruit ◽  
Stages Of Growth ◽  
Total Antioxidant ◽  
Peroxidation Product ◽  
Potential Initiation

Strawberry fruit (Fragaria ×ananassa `Chandler') were evaluated at five different stages of growth and development for changes in the senescence process in fruit tissues. Levels of total antioxidant activity, hydrogen peroxide (H2O2), lipid peroxidation product, malondialdehyde, and ethylene production were determined. Total antioxidant activity (TAA) was measured in terms of in situ antioxidants to scavenge the ABTS.superscript +superscript radical cation. With the progression of ripening and senescence, there was a significant decline in TAA that coincided with increased concentration of H2O2, lipid peroxidation and increased production of ethylene. Our results illustrate that the senescence process in strawberry fruit is associated with the decline of TAA and the potential initiation and accumulation of reactive oxygen species. These results are additionally discussed in terms of potential processes associated with abiotic and biotic environmental stresses. Moreover, although strawberry fruit are typically classified as nonclimacteric, this study illustrates that the free radical mediated senescence process is similar to that of climacteric fruits.

scholarly journals Carotid intima-media thickness and oxidative stress markers for assessment of atherosclerosis in children with β thalassemia major

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Geetanjali Jindal ◽  
Prashant Chavan ◽  
Ravinder Kaur ◽  
Shivani Jaswal ◽  
Kamal Kumar Singhal ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Lipid Peroxidation ◽  
Oxidized Ldl ◽  
Thalassemia Major ◽  
Lipid Peroxidation Product ◽  
Oxidative Stress Markers ◽  
Lipoprotein A ◽  
Stress Markers ◽  
Total Antioxidant ◽  
Peroxidation Product

<p>The present study evaluates carotid intimamedia thickness (CIMT) in children with β thalassemia major to assess atherosclerosis and its relation to the underlying proposed causative mechanisms <em>via</em> lipid peroxidation product malondialdehyde (MDA), oxidized lowdensity lipoproteins (LDL), total antioxidant level, and lipid profile. A cross sectional study was conducted on 62 children (31 cases and 31 controls). CIMT by high resolution ultrasound and biochemical parameters <em>i.e.</em>, total cholesterol, triglycerides, high-density lipoproteins, LDL, Oxidized LDL, lipoprotein (a), lipid peroxidation product MDA and total antioxidant were measured in enrolled subjects and compared. In our study, CIMT was significantly increased in β thalassemia major patients’ as compared to healthy controls. Mean CIMT in cases was 0.69±0.11 mm and in controls 0.51±0.07 mm. Mean oxidized LDL (EU/mL) in cases 39.3±34.4 (range 14.4 to 160) was significantly raised (P=0.02, t test) as compared to controls 23.9±13.4 (range 12 to 70). In our study we found MDA levels (nmol/mL) to be increased in β thalassemia patients as compared to controls. Mean MDA was 10.0±3.27 (4.41 to 17.48) in cases while in controls was 6.87±4.55 (1.5 to 17.9). Our study results show CIMT as an early marker of atherogenesis in β thalassemia major. Oxidative stress markers are also increased in β thalassemia major patients and lipoprotein (a) shows a positive correlation with CIMT. The present study points towards various atherogenetic mechanisms in β thalassemia major.</p><p> </p><p>本研究评价β重型地中海贫血患儿颈动脉内膜中层厚度（CIMT），以评估动脉粥样硬化，以及与潜在通过血脂过氧化反应产物丙二醛（MDA）、氧化低密度脂蛋白（LDL）、总抗氧化水平和血脂谱所提出致病机制之间的关系。 在62名儿童（31例病例和31例对照）中进行了一项横断面研究。 在入组受试者中通过高分辨率超声和生化指标（即总胆固醇、甘油三酯、高密度脂蛋白、LDL、氧化LDL，脂蛋白（a）、血脂过氧化产物MDA和总抗氧化剂）测量CIMT并进行比较。 在我们的研究中，CIMT在β重型地中海贫血患者中比健康对照组显著增加。 病例组中的平均CIMT为0.69±0.11 mm，对照组0.51±0.07 mm。病例组中平均氧化LDL（EU/mL）为39.3±34.4（从14.4到160的范围）与对照组的23.9±13.4（12至70的范围）相比显著升高（P = 0.02，t检验）。 在我们的研究中，我们发现β地中海贫血患者中的MDA水平（nmol/mL）比对照组更高。 病例组中的平均MDA为10.0±3.27（4.41至17.48），而对照组为6.87±4.55（1.5到17.9）。 我们的研究结果表明，CIMT是β重型地中海贫血动脉粥样硬化的早期标记物。 氧化应激标记物在β重型地中海贫血患者中也有增加，脂蛋白（a）显示出与CIMT呈正相关。 本研究针对β重型地中海贫血中的各种动脉粥样硬化机制。</p>

scholarly journals Parameters of Lipid Peroxidation and Antioxidant Protection in Men with Pathological Spermogram Variants

2019 ◽  
Vol 4 (1) ◽  
pp. 14-18
Author(s):  
Nadezhda A. Kurashova ◽  
Ekaterina A. Kudeyarova ◽  
Ekaterina O. Kuznetsova
Keyword(s):  
Oxidative Stress ◽  
Lipid Peroxidation ◽  
Antioxidant Activity ◽  
Antioxidant Defense ◽  
Antioxidant Defense System ◽  
Total Antioxidant Activity ◽  
Antioxidant Protection ◽  
Defense System ◽  
Total Antioxidant ◽  
Peroxidation Processes

Background.Today infertile marriage is not only a serious medical, but also a socio-demographic and economic problem. Male factor contributes averagely to half of the cases of the disease in couples. Such factors as high levels of reactive oxygen species and oxidative stress have been reported to compromise the process of spermatogenesis and sperm function in men. Oxidative stress is a significant risk factor for male infertility. A pro-oxidant testicular environment may alter the expression profile of functional sperm proteins and result in poor sperm quality.Aims.To study the characteristics of the intensity of the processes of lipoperoxidation and antioxidant status in the ejaculate of men with different variants of spermograms.Materials and methods.We examined 69 men with primary infertility and 155 fertile men. The content of lipid peroxidation components and antioxidant protection was determined by spectrophotometric method.Results.The results of the study in men with infertility and asthenozoospermia showed decreased total antioxidant activity of sperm by 50 % and α-tocopherol by 52 %, and in men with infertility and oligozoospermia, decreased total antioxidant activity of sperm by 47 % and α-tocopherol by 41 %.Conclusions.The analysis indicates a change in the parameters of the system of lipid peroxidation – antioxidant defense system and confirms the development of oxidative stress in them. Depending on the pathological state of the ejaculate in men of reproductive age, lipid peroxidation processes have their own characteristics. In men with oligozoospermia, peroxidation processes occur more intensively. Activation of lipid peroxidation – antioxidant defense system processes can be both a consequence and a cause of various metabolic changes in the human body.

scholarly journals Serum biochemistry and oxidative stress indicators in West African dwarf goats under semi intensive management system

2020 ◽  
Vol 44 (4) ◽  
pp. 110-117
Author(s):  
U. G. D. Ihejirika ◽  
O. O. Adenekan ◽  
O. A. Jimoh ◽  
A. A. Jack ◽  
U. C. Uwaeziozi
Keyword(s):  
Lipid Peroxidation ◽  
Antioxidant Activity ◽  
Alkaline Phosphatase ◽  
Superoxide Dismutase ◽  
High Density Lipoprotein ◽  
Density Lipoprotein ◽  
Serum Biochemistry ◽  
Total Antioxidant Activity ◽  
Intensive Management ◽  
Total Antioxidant

 This study aims to evaluate variations in serum biochemistry and oxidative status between male and female WestAfrican dwarfgoats under semi intensive management system. Twenty, each of bucks and does (12 months old) were randomly selected from a herd purchased from Oyo livestock market, in Oyo State. The average body weights of the goats were12.08 ± 3.26 and 12.15 ± 1.51kg does and bucks, respectively. Blood samples were collected from fastened goats and assayed for serum biochemicals, lipid peroxidation,  total antioxidant activity, catalase and superoxide dismutase using standard procedures. Data obtained were subjected to T-test. The result showed serum glucose, albumin,  cholesterol, total protein, globulin, triglyceride, creatinine, alanine amino transferase(ALT),aspartate amino transferase(AST) and urea were not significantly (P>0.05) different among the sexes. Serum high density lipoprotein was significantly (P<0.05) higher in does (13.96 mmol/l) than in bucks (5.91mmol/l) and alkaline phosphatase was significantly (P<0.05) higher in bucks (2580.55 IU/L) than in does (1594.58 IU/L). Serum lipid peroxidation, total antioxidant activity and superoxide dismutase were statistically similar (P>0.05) in both sexes. Serum catalase was significantly (P<0.05) higher in bucks than in does. From this study, it can be deduced that serum biochemical indices in does and bucks are similar except for alkaline phosphatase and high density lipoprotein. Bucks recorded higher catalase than does.It could be concluded that during physiological and environmental stress conditions, antioxidant supplementation should be adopted to boost the antioxidant capacity of the does.

scholarly journals Assessment of oxidative stress indicators of West African Dwarf sheep under semi intensive management system

2021 ◽  
Vol 43 (2) ◽  
pp. 78-83
Author(s):  
A. A Jack ◽  
O. A. Jimoh ◽  
U. G. Ihejirika ◽  
U. C. Uwaeziozi ◽  
O. O. Adenekan
Keyword(s):  
Oxidative Stress ◽  
Lipid Peroxidation ◽  
Antioxidant Activity ◽  
Superoxide Dismutase ◽  
Serum Biochemistry ◽  
West African ◽  
Total Antioxidant Activity ◽  
West African Dwarf ◽  
Total Antioxidant ◽  
Serum Biochemical

Oxidative stress results from increased production of free radicals and reactive oxygen species, and a decrease in antioxidant defense. This study was conducted to assess sexual dimorphism in serum biochemistry and oxidative status of West African dwarf lambs. Sixteen each of rams and ewes 8months old were randomly selected from a herd purchase from livestock market, Oyo. The average body weights of the lambs were 12.08±3.26 and 12.76kg ewes and rams, respectively. Fastened blood samples were collected from the sheep and assayed for serum biochemical, lipid peroxidation, total antioxidant activity, catalase and superoxide dismutase using standard procedures, data obtained were subjected to T-test. The result indicated that both sex had similar serum biochemical indices except total protein. Ewes had significantly higher serum protein than ram. Rams had apparently higher total antioxidant activity and significantly higher serum catalase activity than ewes, while serum lipid peroxidation and superoxide dismutase were statistically similar in both sexes. This indicates that rams have better antioxidant activity than ewes. During oxidative stress prone conditions and environment, measures to boost antioxidant activity of ewes should be emphasized.

scholarly journals STATUS OF LIPID PEROXIDATION AND TOTAL ANTIOXIDANT CAPACITY IN REGULAR VOLUNTARY BLOOD DONORS

2011 ◽  
Vol 01 (04) ◽  
pp. 03-06
Author(s):  
Suchetha Kumari ◽  
Jayaprakash Shetty K. ◽  
Sharada V. ◽  
◽  
Keyword(s):  
Lipid Peroxidation ◽  
Antioxidant Capacity ◽  
Total Antioxidant Capacity ◽  
Blood Donors ◽  
Blood Donation ◽  
Cell Damage ◽  
Low Frequency ◽  
Lipid Peroxidation Product ◽  
Total Antioxidant ◽  
Peroxidation Product

AbstractOxygen free radicals and products of oxidative cell damage are known as biomarkers that escalate in the pathophysiology of many diseases. The aim of this study is to evaluate association between blood donation and total antioxidant capacity and lipid peroxidation product malondialdehyde(MDA). The levels of MDA and total antioxidant capacity(TAC) were studied in serum of 90 male voluntary blood donors aged from 20 to 45 years attending K. S. Hegde charitable hospital, Blood bank, for determination of lipid peroxidation and antioxidant status, respectively. The donors were divided into nine groups depending on number of blood donation. With increase in number of blood donation the serum MDA level were significantly reduced (p>0.01) but total antioxidant activity was significantly increased (p>0.01). High frequency of blood donors had evidence of decreased lipid peroxidation and enhanced activity of total antioxidants when compared with low frequency blood donors. which can be considered as one of the fringe benefits of regular blood donation.

Assessment of oxidative stress indicators of West African Dwarf sheep under semi intensive management system

2021 ◽  
Vol 43 (1) ◽  
pp. 78-83
Author(s):  
A. A. Jack ◽  
O. A. Jimoh ◽  
U. G. Ihejirika ◽  
U. C, Uwaeziozi ◽  
O. O. Adenekan
Keyword(s):  
Oxidative Stress ◽  
Lipid Peroxidation ◽  
Antioxidant Activity ◽  
Superoxide Dismutase ◽  
Serum Biochemistry ◽  
West African ◽  
Total Antioxidant Activity ◽  
West African Dwarf ◽  
Total Antioxidant ◽  
Serum Biochemical

Oxidative stress results from increased production of free radicals and reactive oxygen species, and a decrease in antioxidant defense. This study was conducted to assess sexual dimorphism in serum biochemistry and oxidative status of West African dwarf lambs. Sixteen each of rams and ewes 8months old were randomly selected from a herd purchase from livestock market, Oyo. The average body weights of the lambs were 12.08±3.26 and 12.76kg ewes and rams, respectively. Fastened blood samples were collected from the sheep and assayed for serum biochemical, lipid peroxidation, total antioxidant activity, catalase and superoxide dismutase using standard procedures, data obtained were subjected to T-test. The result indicated that both sex had similar serum biochemical indices except total protein. Ewes had significantly higher serum protein than ram. Rams had apparently higher total antioxidant activity and significantly higher serum catalase activity than ewes, while serum lipid peroxidation and superoxide dismutase were statistically similar in both sexes. This indicates that rams have better antioxidant activity than ewes. During oxidative stress prone conditions and environment, measures to boost antioxidant activity of ewes should be emphasized.

scholarly journals Protective Effects of Flavonoid Pomiferin on Heart Ischemia-Reperfusion

2007 ◽  
Vol 76 (3) ◽  
pp. 363-370
Author(s):  
J. Nečas ◽  
L. Bartošíková ◽  
T. Florian ◽  
J. Klusáková ◽  
V. Suchý ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Diastolic Pressure ◽  
Myocardial Dysfunction ◽  
Ischemia Reperfusion ◽  
Left Ventricular ◽  
Lipid Peroxidation Product ◽  
Total Antioxidant Activity ◽  
Protective Effects ◽  
Rat Hearts ◽  
Total Antioxidant

The objective of the present 15-day study was to evaluate the cardioprotective potential of flavonoid pomiferin isolated from the infructences of Maclura pomifera, Moraceae, against ischemia-reperfusion induced injury in rat hearts as a model of antioxidant-based composite therapy. Studies were performed with isolated, modifi ed Langendorff-perfused rat hearts and ischemia of heart was initiated by stopping the coronary flow for 30 min, followed by 60 min of reperfusion (14 ml min-1). Wistar rats were divided into three groups. The treated group received pomiferin (5 mg/kg/day in 0.5% Avicel); the placebo group received only 0.5% Avicel; the intact group was left without any applications. Biochemical indicators of oxidative damage, lipid peroxidation product malondialdehyde, antioxidant enzymes (superoxide dismutase, glutathione peroxidase, total antioxidant activity in serum and myocardium has been evaluated. We also examined the effect of pomiferin on cardiac function (left ventricular end-diastolic pressure, left ventricular pressure, peak positive +dP/dt (rate of pressure development) after ischemia and reperfusion. Our results demonstrate that pomiferin attenuates the myocardial dysfunction provoked by ischemiareperfusion. This was confirmed by the increase in both the antioxidant enzyme values and the total antioxidant activity. The cardio-protection provided by pomiferin treatment results from the suppression of oxidative stress and correlates with the improved ventricular function.

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