scholarly journals Cypermethrin-Induced in vitro Alterations on Oxidative Stress and Quality of Salmo coruhensis Spermatozoa

2018 ◽  
Vol 52 (4s) ◽  
pp. s71-s76 ◽  
Author(s):  
Filiz Kutluyer ◽  
Mehmet Kocabas ◽  
Mine Erisir ◽  
Fulya Benzer
Keyword(s):  
Oxidative Stress

Study assessing the efficacy of herbal teas on bone health and quality of life in a population with osteopenia: rooibos actions on melatonin and tulsi actions on quality of life.

2021 ◽  
Vol 4 (2) ◽  
pp. 270-298
Author(s):  
Fahima Munmun ◽  
Alyssa Linden ◽  
Hunter Hanlon ◽  
Hannah Enderby ◽  
Paula Witt-Enderby
Keyword(s):  
Quality Of Life ◽  
Oxidative Stress ◽  
Bone Health ◽  
Human Mesenchymal Stem Cell ◽  
Melatonin Receptors ◽  
Cooperative Effort ◽  
Translational Study ◽  
Before And After

The purpose of the OsTea translational study was to assess the efficacy of teas (tulsi, rooibos, oolong) compared to placebo (coriander) on markers of bone health and quality of life (QOL) in those with osteopenia and on human mesenchymal stem cell (hMSC) differentiation into osteoblasts to identify potential mechanisms of action. Following consumption of tea (3 times/day; 90 days), participants collected a urine sample during the night (10pm-6am) and filled in questionnaires before and after the study. Rooibos consumption demonstrated a significant decrease in urinary CTX levels vs placebo; trended towards increases in nocturnal melatonin levels (p=0.06); significantly decreased serotonin-producing microbes in the gut; and demonstrated trends towards improvements (p=0.09) in QUALIOST emotional parameters. Tulsi consumption primarily affected subjective measures, such as significantly improved scores for PSS, STAI-trait anxiety, and osteoporosis/osteopenia-related parameters in the QUALIOST. To further identify potential mechanisms underlying these actions of rooibos on CTX and melatonin (urinary and gut), rooibos and melatonin effects on human osteoblastogenesis were carried out for 21 days under oxidative stress conditions to mimic osteopenia.  Although both rooibos and melatonin protected against oxidative stress-induced loss of osteoblasts in vitro, their underlying mechanisms were different.  Melatonin, like tulsi and oolong, demonstrated the greatest protection against oxidative stress at days 10-11 of exposure, which was due to effects on hMSC viability and through melatonin receptors. Rooibos, on the other hand, demonstrated protection at days 10-11 and 20-21, which was through signaling mechanisms involved in differentiation processes and not on cell viability. These findings suggest that the clinical actions of rooibos on decreasing CTX levels in a population with osteopenia may be through a cooperative effort between melatonin and rooibos by protecting hMSC viability against oxidative stress-induced loss and by promoting osteoblast differentiation, respectively.  This study also supports the use of tulsi for improving quality of life in a population susceptible to osteoporosis.

The protective effect of melatonin on the in vitro development of yak embryos against hydrogen peroxide-induced oxidative injury

Zygote ◽  
2019 ◽  
Vol 27 (3) ◽  
pp. 118-125 ◽  
Author(s):  
Wei Peng ◽  
Mengtong Lei ◽  
Jun Zhang ◽  
Yong Zhang
Keyword(s):  
Oxidative Stress ◽  
Hydrogen Peroxide ◽  
Critical Role ◽  
Underlying Mechanism ◽  
Preimplantation Embryos ◽  
Effective Antioxidant ◽  
Vitro Development ◽  
Oxidation Effect

SummaryMelatonin plays a critical role in several types of cells as an antioxidant to protect intracellular molecules from oxidative stress. The anti-oxidation effect of melatonin in yak embryos is largely unknown. We report that melatonin can protect the development of yak preimplantation embryos against oxidative stress induced by hydrogen peroxide (H2O2). Therefore, the quality of blastocysts developed from zygotes exposed to H2O2 was promoted. In addition, we observed that melatonin reduced H2O2-induced intracellular reactive oxygen species (ROS) levels and prevented mitochondrial dysfunction in zygotes. These phenomena revealed the effective antioxidant activity of melatonin to prevent oxidative stress in yak embryos. To determine the underlying mechanism, we further demonstrated that melatonin protected preimplantation embryos from oxidative damage by preserving antioxidative enzymes. Collectively, these results confirmed the anti-oxidation effect of melatonin in yak embryos that significantly improved the quantity and quality of blastocysts in the in vitro production of embryos in yaks.

scholarly journals Applications of Melatonin in Female Reproduction in the Context of Oxidative Stress

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Yonghui Jiang ◽  
Huangcong Shi ◽  
Yue Liu ◽  
Shigang Zhao ◽  
Han Zhao
Keyword(s):  
Oxidative Stress ◽  
Polycystic Ovary ◽  
Oocyte Quality ◽  
Early Embryo ◽  
Female Reproduction ◽  
Adverse Conditions ◽  
Wide Range

Oxidative stress has been recognized as one of the causal mediators of female infertility by affecting the oocyte quality and early embryo development. Improving oxidative stress is essential for reproductive health. Melatonin, a self-secreted antioxidant, has a wide range of effects by improving mitochondrial function and reducing the damage of reactive oxygen species (ROS). This minireview illustrates the applications of melatonin in reproduction from four aspects: physiological ovarian aging, vitrification freezing, in vitro maturation (IVM), and oxidative stress homeostasis imbalance associated with polycystic ovary syndrome (PCOS), emphasising the role of melatonin in improving the quality of oocytes in assisted reproduction and other adverse conditions.

scholarly journals Negative impacts of in-vitro oxidative stress on the quality of heat-induced myofibrillar protein gelation during refrigeration

2018 ◽  
Vol 21 (1) ◽  
pp. 2205-2217 ◽  
Author(s):  
Tianlan Xia ◽  
Xue Zhao ◽  
Xiaoling Yu ◽  
Ling Li ◽  
Guanghong Zhou ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Myofibrillar Protein ◽  
Protein Gelation ◽  
Negative Impacts

scholarly journals A Study on the Quality and Identity of Brazilian Pampa Biome Honey: Evidences for Its Beneficial Effects against Oxidative Stress and Hyperglycemia

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
L. C. Cruz ◽  
J. E. S. Batista ◽  
A. P. P. Zemolin ◽  
M. E. M. Nunes ◽  
D. B. Lippert ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Antioxidant Activity ◽  
Antioxidant Properties ◽  
High Concentration ◽  
Beneficial Effects ◽  
Pampa Biome ◽  
First Time

We characterized, for the first time, the quality and identity of Brazilian Pampa biome honey and its antioxidant propertiesin vitro(FRAP, DDPH and ABTS). The potential protective effect of honey against oxidative stress induced by iron (Fe) and paraquat, (PQ) in aDrosophila melanogastermodel (in vivo) was also tested. The results indicated that all honey samples tested showed antioxidant activityin vitro. Flies treated with honey showed increased lifespan and were protected against oxidative stress induced by Fe and PQ. Despite the high concentration of sugars in honey (approximately 70–80%), our results demonstrate a hypoglycemic-like effect of honey inDrosophila. Thus, this study demonstrates the high quality of Brazilian Pampa biome honey as well as its significant antioxidant activityin vitroandin vivo, pointing to the potential use of this natural product as an alternative in the therapy of oxidative stress-associated diseases.

scholarly journals OXIDATIVE STRESS IN THE FOLLICULA AND ITS INFLUENCE ON THE EXTRACORPORAL FERTILIZATION: THE STATE OF THE PROBLEM

2017 ◽  
Vol 4 (3) ◽  
pp. 137-144
Author(s):  
M. A Shestakova ◽  
M. V Kiseleva ◽  
Elena V. Proskurnina
Keyword(s):  
Oxidative Stress ◽  
Free Radical ◽  
Production Systems ◽  
The State ◽  
Free Radical Reactions ◽  
Vitro Fertilization ◽  
Radical Production ◽  
The Impact

Free radical reactions are aconcurrent part of the homeostasis of any system, including reproductive one. The imbalance of free radical production systems and antioxidants leads to pathological consequences, known as oxidative stress. In recent years, there have been actively executed successful studies, in which attempts are made to identify the impact of local oxidative stress in the follicle on the quality of the embryo and the outcome of «in vitro fertilization» (IVF). Despite both the inadequacy of data and the difficulty of comparing them, free radicals and the state of the antioxidant system of the follicular fluid have been proven to have a significant effect on oocyte and embryo development in subsequent IVF.

scholarly journals Dietary Phytochemicals: Natural Swords Combating Inflammation and Oxidation-Mediated Degenerative Diseases

2016 ◽  
Vol 2016 ◽  
pp. 1-25 ◽  
Author(s):  
Md. Asiful Islam ◽  
Fahmida Alam ◽  
Md. Solayman ◽  
Md. Ibrahim Khalil ◽  
Mohammad Amjad Kamal ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Natural Products ◽  
Poor Quality ◽  
Degenerative Disease ◽  
Degenerative Diseases ◽  
Dietary Phytochemicals ◽  
Alternative Medications

Cumulatively, degenerative disease is one of the most fatal groups of diseases, and it contributes to the mortality and poor quality of life in the world while increasing the economic burden of the sufferers. Oxidative stress and inflammation are the major pathogenic causes of degenerative diseases such as rheumatoid arthritis (RA), diabetes mellitus (DM), and cardiovascular disease (CVD). Although a number of synthetic medications are used to treat these diseases, none of the current regimens are completely safe. Phytochemicals (polyphenols, carotenoids, anthocyanins, alkaloids, glycosides, saponins, and terpenes) from natural products such as dietary fruits, vegetables, and spices are potential sources of alternative medications to attenuate the oxidative stress and inflammation associated with degenerative diseases. Based onin vitro,in vivo, and clinical trials, some of these active compounds have shown good promise for development into novel agents for treating RA, DM, and CVD by targeting oxidative stress and inflammation. In this review, phytochemicals from natural products with the potential of ameliorating degenerative disease involving the bone, metabolism, and the heart are described.

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