Seasonal changes in some oxidant and antioxidant parameters during folliculogenesis in Egyptian buffalo

Hozyen, Heba F.; Ahmed, Hodallah H.; Essawy, G. E. S.; Shalaby, S. I. A.

doi:10.1016/j.anireprosci.2014.10.005

Cited by 13 publications

(10 citation statements)

References 30 publications

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“…are in agreement with [1] in swine and [4] in buffalo FF. For ovulation certain concentration of ROS is needed [8] and maybe high SOD activity in FF prevent ovulation of follicles obtained during luteal phase.…”

Section: Discussionsupporting

confidence: 86%

“…Superoxide dismutase catalyses the dismutation of superoxide radical to hydrogen peroxide which will be removed by glutathione peroxidase. There were studies dealing with SOD function in oocyte development [2,4,12,13]. The reducing ability of nonenzymatic molecules (vitamin C and E, glutathione and other protein thiols, bilirubin and uric acid) can be measured in biological samples by the ferric-reducing capacity [1].…”

mentioning

confidence: 99%

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Antioxidative system of bovine follicles regarding stage of estrous cycle and folliculogenesis

Aladrović¹,

Ljubić²,

Laškaj³

et al. 2019

Bìol. Tvarin

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Oxidative stress is important for promoting the oocyte maturation and ovulation within the follicle. The aim of the study was to examine activities of the superoxide dismutase (SOD), glutathione peroxidase (GPx) and biological antioxidant potential (BAP) involved in protection against free oxygen radicals and concentration of reactive oxygen metabolites (ROMs) in bovine follicular fluid.Bovine ovaries were obtained from a slaughterhouse. The stage of estrous cycle (follicular or luteal) was identified. Follicular fluids (FF) were collected by puncture from three categories of follicles: small (≤5 mm), medium (6-10 mm) or large (>10 mm) from ovaries in both follicular and luteal stage of estrous cycle.The results indicate a significantly higher activity of SOD in bovine FF from follicles in luteal stage of estrous cycle than in follicular stage (P=0.037). In FF of follicles in both stages of estrous cycle, SOD activity and BAP were significantly higher in FF of small and medium sized follicles than in large ones (P=0.000 both). The ROMs significantly declined from small to large follicles in FF collected during both, luteal and follicular phase of estrous cycle (P=0.005 both). Activity of GPx showed no significant differences regarding neither estrous cycle nor size of follicles.Results indicate similar antioxidative properties of bovine follicles during both luteal/follicular stage of estrous cycle with higher SOD activity in FF of follicles in luteal stage of estrous cycles which undergo atresia.

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Section: Discussionsupporting

confidence: 86%

mentioning

confidence: 99%

Antioxidative system of bovine follicles regarding stage of estrous cycle and folliculogenesis

Aladrović¹,

Ljubić²,

Laškaj³

et al. 2019

Bìol. Tvarin

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“…An example is highly fluctuating success rates of in vitro fertilization (IVF) and embryo transfer in the absence of explanation (Wunder et al 2005). The influence of the seasons of the year on the characteristics of the oocytes, fertilization and pregnancy rates may be importantly related to this variability, as reported previously for bovine (Rutldge et al 1999;Al-Katanani et al 2002;Sartori and Mertens 2002;Vasconcelos et al 2006;Paula-Lopes et al 2008;Roth 2008;de Torres-Júnior et al 2008;Ferreira et al 2011;Gendelman and Roth 2012a, b, c;Vieira et al 2014) and buffalo (Abdoon et al 2014;Hozyen et al 2014;Rossi et al 2014;Ali 2015;Lal et al 2015). Indeed, it is well-known that heat stress is a major concern for animal agriculture production in tropical and subtropical countries across the globe because of it's negative impact on reproduction (Ealy et al 1995).…”

Section: Introductionmentioning

confidence: 84%

Developmental competence and expression profile of genes in buffalo (Bubalus bubalis) oocytes and embryos collected under different environmental stress

et al. 2016

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The study examined the effects of different environmental stress on developmental competence and the relative abundance (RA) of various gene transcripts in oocytes and embryos of buffalo. Oocytes collected during cold period (CP) and hot period (HP) were matured, fertilized and cultured in vitro to blastocyst hatching stage. The mRNA expression patterns of genes implicated in developmental competence (OCT-4, IGF-2R and GDF-9), heat shock (HSP-70.1), oxidative stress (MnSOD), metabolism (GLUT-1), pro-apoptosis (BAX) and anti-apoptosis (BCL-2) were evaluated in immature and matured oocytes as well as in pre-implantation stage embryos. Oocytes reaching MII stage, cleavage rates, blastocyst yield and hatching rates increased (P \ 0.05) during the CP. In MII oocytes and 2-cell embryos, the RA of OCT-4, IGF-2R, GDF-9, MnSOD and GLUT-1 decreased (P \ 0.05) during the HP. In 4-cell embryos, the RA of OCT-4, IGF-2R and BCL-2 decreased (P \ 0.05) in the HP, whereas GDF-9 increased (P \ 0.05). In 8-to 16-cell embryos, the RA of OCT-4 and BCL-2 decreased (P \ 0. 05) in the HP, whereas HSP-70.1 and BAX expression increased (P \ 0.05). In morula and blastocyst, the RA of OCT-4, IGF-2R and MnSOD decreased (P \ 0.05) during the HP, whereas HSP-70.1 was increased (P \ 0.05). In conclusion, deleterious seasonal effects induced at the GVstage carry-over to subsequent embryonic developmental stages and compromise oocyte developmental competence and quality of developed blastocysts.

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“…Follicular fluid components are mainly derived from blood besides the locally produced substances (32) . So any changes in blood components are directly reflected in the composition of follicular fluid (33,34) . On the other hand, Bloom et al (9) also detect moderate positive correlations between concentrations of follicular fluid Cd and blood Cd, although no correlation for follicular fluid Pb and blood Pb.…”

Section: Discussionmentioning

confidence: 99%

Effect of passive smoking on heavy metals concentration in blood and follicular fluid of patients on going ICSI

ElMohr¹,

Faris²,

Bakry³

et al. 2020

IJST

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Purpose: To assess the effects passive smoking and heavy metal concentrations in the blood and follicular fluid on assisted reproductive technology outcome.Methods: A prospective study was conducted between March 2017 and January 2018 in population consisted of 75 female patients undergoing an In vitro fertilization (IVF) cycle at Dr. Faris Medical center for Infertility and Human Reproduction located on Heliopolis, Cairo, Egypt; with unexplained infertility who underwent intracytoplasmic sperm injection (ICSI) using GnRH-antagonist protocol. Concentrations of three toxic metals Cadmium (Cd), Lead (Pb) and Arsenic (As) were measured both in blood sera and follicular fluid specimens. Patients were evaluated in two groups both undergoing ICSI; the first group consisted of patients who does not smoke or exposed to smoking (n=28) and the group passive smoker females (n=47). Results: These three heavy metals were significantly higher in serum and follicular fluid of passive smoking females (P<0.05). Also, higher concentrations of Cd, Pb and As were found in follicular fluid of passive smoking patients in comparison with non-smoker females. However, concentrations of Cd and Pb were not significantly different between both serum and follicular fluid. Conclusion: Passive smoking could affect levels of Cd, Pb and As in serum and follicular fluid of females undergoing Intra Cytoplasmic Sperm Injection (ICSI).

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Seasonal changes in some oxidant and antioxidant parameters during folliculogenesis in Egyptian buffalo

Cited by 13 publications

References 30 publications

Antioxidative system of bovine follicles regarding stage of estrous cycle and folliculogenesis

Antioxidative system of bovine follicles regarding stage of estrous cycle and folliculogenesis

Developmental competence and expression profile of genes in buffalo (Bubalus bubalis) oocytes and embryos collected under different environmental stress

Effect of passive smoking on heavy metals concentration in blood and follicular fluid of patients on going ICSI

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