17β-estradiol (βE2) protects human retinal Müller cell against oxidative stress in vitro: Evaluation of its effects on gene expression by cDNA microarray

Background and aims: Branched chain amino acids (BCAAs) can be tightly connected to metabolism syndrome (MetS) which can be counted as a metabolic indicator in the case of insulin resistance (IR). The aim of this study was to assess the potential role of these acids under oxidative stress. Material and Methods: the in vitro antioxidant activity of BCAAs was assessed using free radical 1, 1-diphenyl-2-picryl-hydrazyl (DPPH) scavenging assays. For further check, a qRT-PCR technique was madefor detection the extent of alterations in gene expression of antioxidative enzymes (catalase and glutathione peroxidase (Gpx)) in lipopolysaccharides (LPS(-induced macrophages RAW 264.7 cell line. Additionally, BCAAs antioxidant activity was evaluated based on plasma H2O2 levels and xanthine oxidase (XO) activity in prooxidative LPS-treated mice. Results: Different concentrations of BCAAs affected on DPPH radical scavenging activity but to lesser extent than the ascorbic acid. Besides, BCAAs obviously upregulated the gene expression levels of catalases and Gpx in LPS-modulated macrophage RAW 264.7 cell line. In vivo BCAAs significantly minimized the level of plasma H2O2 as well as the activity of XO activity under oxidative stress. Conclusion: our current findings suggest that BCAAs supplementation may potentially serve as a therapeutic target for treatment of oxidative stress occurs with atherosclerosis, IR-diabetes, MetS and tumorigenesis.

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Behavior of in vitro cultured ameboid microglial cells migrating on Müller cell end-feet in the quail embryo retina

Glia ◽

10.1002/glia.20393 ◽

2006 ◽

Vol 54 (5) ◽

pp. 376-393 ◽

Cited By ~ 7

Author(s):

Mohamed Tassi ◽

Ruth Calvente ◽

José L. Marín-Teva ◽

Miguel A. Cuadros ◽

Ana M. Santos ◽

...

Keyword(s):

Müller Cell ◽

Microglial Cells ◽

Quail Embryo ◽

Muller Cell

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Therapeutic Effect of Camel Milk and Its Exosomes on MCF7 Cells In Vitro and In Vivo

Integrative Cancer Therapies ◽

10.1177/1534735418786000 ◽

2018 ◽

Vol 17 (4) ◽

pp. 1235-1246 ◽

Cited By ~ 27

Author(s):

Abdelnaser A. Badawy ◽

Mohammed A. El-Magd ◽

Sana A. AlSadrah

Keyword(s):

Oxidative Stress ◽

Gene Expression ◽

Immune Response ◽

Local Injection ◽

Camel Milk ◽

Anticancer Effect ◽

Mcf7 Cells ◽

Beneficial Effects

Background/Objectives: In the Middle East, people consume camel milk regularly as it is believed to improve immunity against diseases and decrease the risk for cancer. Recently, it was noted that most of the beneficial effects of milk come from their nanoparticles, especially exosomes. Herein, we evaluated the anticancer potential of camel milk and its exosomes on MCF7 breast cancer cells (in vitro and in vivo) and investigated the possible underlying molecular mechanism of action. Methods/Results: Administration of camel milk (orally) and its exosomes (orally and by local injection) decreased breast tumor progression as evident by ( a) higher apoptosis (indicated by higher DNA fragmentation, caspase-3 activity, Bax gene expression, and lower Bcl2 gene expression), ( b) remarkable inhibition of oxidative stress (decrease in MDA levels and iNOS gene expression); ( c) induction of antioxidant status (increased activities of SOD, CAT, and GPX), ( d) notable reduction in expression of inflammation-( IL1b, NFκB), angiogenesis-( VEGF) and metastasis-( MMP9, ICAM1) related genes; and ( e) higher immune response (high number of CD+4, CD+8, NK1.1 T cells in spleen). Conclusions: Overall, administration of camel milk–derived exosomes showed better anticancer effect, but less immune response, than treatment by camel milk. Moreover, local injection of exosomes led to better improvement than oral administration. These findings suggest that camel milk and its exosomes have anticancer effect possibly through induction of apoptosis and inhibition of oxidative stress, inflammation, angiogenesis and metastasis in the tumor microenvironment. Thus, camel milk and its exosomes could be used as an anticancer agent for cancer treatment.

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cDNA microarray analysis of gene expression in parthenotes and in vitro produced buffalo embryos

Theriogenology ◽

10.1016/j.theriogenology.2011.11.004 ◽

2012 ◽

Vol 77 (6) ◽

pp. 1240-1251 ◽

Cited By ~ 11

Author(s):

A.S. Abdoon ◽

N. Ghanem ◽

O.M. Kandil ◽

A. Gad ◽

K. Schellander ◽

...

Keyword(s):

Gene Expression ◽

Microarray Analysis ◽

Cdna Microarray ◽

Cdna Microarray Analysis

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Erratum: Synthesis and in vitro evaluation of melatonin entrapped PLA nanoparticles: An oxidative stress and T-cell response using golden hamster. (J Biomed Mater Res Part A 2015:103A:3034-3044)

Journal of Biomedical Materials Research Part A ◽

10.1002/jbm.a.36340 ◽

2018 ◽

Vol 106 (3) ◽

pp. 858-858

Author(s):

Sanjeev K. Pandey ◽

Chandana Haldar ◽

Dipanshu K. Vishwas ◽

Pralay Maiti

Keyword(s):

Oxidative Stress ◽

T Cell ◽

Golden Hamster ◽

Cell Response ◽

T Cell Response ◽

In Vitro Evaluation ◽

Biomed Mater

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175 Nobiletin enhances the quality of in vitro-matured bovine oocytes and blastocysts by altering the transcription of key developmental genes

Reproduction Fertility and Development ◽

10.1071/rdv31n1ab175 ◽

2019 ◽

Vol 31 (1) ◽

pp. 212

Author(s):

Y. N. Cajas ◽

K. Cañón-Beltrán ◽

M. E. González ◽

P. Ramos-Ibeas ◽

A. Gutierrez-Adán ◽

...

Keyword(s):

Oxidative Stress ◽

Gene Expression ◽

Expression Analysis ◽

Gene Expression Analysis ◽

Statistical Significance ◽

Housekeeping Genes ◽

Cumulus Cells ◽

Cell Junction ◽

In Vitro Production

One of the problems associated with in vitro production of embryos in bovine is the increase in reactive oxygen species (ROS), which leads to cell alterations and death. Nobiletin is a polymethoxyflavone isolated from citrus fruits with various beneficial effects on cell cycle regulation and inhibition of ROS production. In a preliminary study, we demonstrated that supplementation of 25 or 50 µM nobiletin to the in vitro maturation (IVM) medium reduces oxidative stress and improves oocyte nuclear and cytoplasmic maturation and embryo development. Thus, in this study, we aimed to evaluate the antioxidant activity of nobiletin during IVM on bovine matured oocytes, their cumulus cells (CC), and blastocysts by quantitative changes of gene expression. Immature cumulus oocytes complexes (COC) were aspirated from ovaries of slaughtered heifers. Selected COC underwent IVM in TCM-199+10% FCS and 10ng mL−1 epidermal growth factor (EGF; Control) supplemented with 25 µM (Nob25) or 50 µM (Nob50) nobiletin (MedChemExpress, Monmouth Junction, NJ, USA) or 0.001% dimethyl sulfoxide (DMSO control), a vehicle for nobiletin dilution, in 5% CO2 in air at 38.5°C. After 24h, 50 matured oocytes/group and their CC were snap-frozen in LN2 for gene expression analysis. The remaining oocytes were fertilized (Day 0) and cultured in vitro. Blastocysts (Day 7; n=50/group) were snap-frozen in LN2 for gene expression analysis (5 replicates). The mRNA abundance of candidate genes related with oxidative stress (SOD2, CYP51); apoptosis (BAX); quality (BMP15, BMP7, CLIC1, MAPK1, ABCB1); and cell junction (GJA1) was measured by quantitative PCR; H2AFZ and 18S rRNA were used as housekeeping genes. Statistical significance was assessed by one-way ANOVA. Supplementation of IVM medium with Nob25 or Nob50 produced changes in the expression levels of genes related to oxidative stress and apoptosis during IVM compared with controls. SOD2 and CYP51 were down-regulated in oocytes and CC (P<0.05) but not in blastocysts, whereas BAX was down-regulated only in CC (P<0.05). Nobiletin supplementation in IVM increased the expression of MAPK1 in oocytes and blastocysts (P<0.05); however, no differences were observed in CC. BMP15 for oocytes and their CC and GJA1 for CC were up-regulated in Nob25 and Nob50 groups compared with controls (P<0.05). The relative abundance of CLIC1 decreased in blastocysts from both nobiletin groups compared with controls (P<0.05). No significant differences in the expression in ABCB1 and BMP7 were detected. In conclusion, our results suggest that supplementation of 25 or 50 µM nobiletin to the IVM medium reduces oxidative stress in oocytes and CC, decreases CC apoptosis, and provokes positive changes in the expression of genes related to oocyte and embryo quality. This research was supported by Spanish MINECO (AGL2015-70140-R and AGL2015-66145-R). Y. N. Cajas was supported by a grant from SENESCYT-Ecuador.

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Transcriptome changes in undifferentiated Caco-2 cells exposed to food-grade titanium dioxide (E171): contribution of the nano- and micro- sized particles

Scientific Reports ◽

10.1038/s41598-019-54675-0 ◽

2019 ◽

Vol 9 (1) ◽

Cited By ~ 2

Author(s):

Héloïse Proquin ◽

Marloes C. M. Jonkhout ◽

Marlon J. Jetten ◽

Henk van Loveren ◽

Theo M. de Kok ◽

...

Keyword(s):

Oxidative Stress ◽

Gene Expression ◽

Titanium Dioxide ◽

Immune System ◽

Stress Responses ◽

Inflammatory Responses ◽

Relative Contribution ◽

Immune System Activation ◽

Favourable Environment

AbstractThe food additive titanium dioxide (TiO2), or E171, is a white food colorant. Recent studies showed after E171 ingestion a significantly increased number of colorectal tumours in a colorectal cancer mouse model as well as inflammatory responses and dysregulation of the immune system in the intestine of rats. In the mouse colon, E171 induced gene expression changes related to oxidative stress, impairment of the immune system, activation of signalling and cancer-related processes. E171 comprises nanoparticles (NPs) and microparticles (MPs). Previous in vitro studies showed that E171, NPs and MPs induced oxidative stress responses, DNA damage and micronuclei formation. This study aimed to investigate the relative contribution of the NPs and MPs to effects of E171 at the transcriptome level in undifferentiated Caco-2 cells by genome wide microarray analysis. The results showed that E171, NPs, and MPs induce gene expression changes related to signalling, inflammation, immune system, transport and cancer. At the pathway level, metabolism of proteins with the insulin processing pathway and haemostasis were specific to E171 exposure. The gene expression changes associated with the immune system and inflammation induced by E171, MPs, and NPs suggest the creation of a favourable environment for colon cancer development.

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