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Registro Completo |
Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
11/01/2018 |
Data da última atualização: |
27/01/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
ASCARI, I. J.; ALVES, N. G.; JASMIN, J.; LIMA, R. R.; QUINTAO, C. C. R.; OBERLENDER, G.; MORAES, E. A.; CAMARGO, L. S. de A. |
Afiliação: |
I. J. ASCARI, UFLA; N. G. ALVES, UFLA; J. JASMIN, UFRJ; Renato Ribeiro Lima, UFLA; CAROLINA CAPOBIANGO ROMANO QUINTAO, CNPGL; G. OBERLENDER, IEF Muzambinho, MG; E. A. MORAES, Universidade Federal do Vale do São Francisco; LUIZ SERGIO DE ALMEIDA CAMARGO, CNPGL. |
Título: |
Addition of insulin-like growth factor I to the maturation medium of bovine oocytes subjected to heat shock: effects on the production of reactive oxygen species, mitochondrial activity and oocyte competence. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
Domestic Animal Endocrinology, v. 60, p. 50-60, 2017. |
DOI: |
10.1016/j.domaniend.2017.03.003 |
Idioma: |
Inglês |
Conteúdo: |
Abstract This study was performed to investigate the effects of insulin-like growth factor-I (IGF-I) addition to in vitro maturation (IVM) medium on apoptosis, mitochondrial membrane potential, ROS production, and developmental competence of bovine oocytes subjected to heat shock. Two temperatures (conventional: 24 h at 38.5C, or heat shock: 12 h at 41C followed by 12 h at 38.5C) and 3 IGF-I concentrations (0, 25, and 100 ng/mL) were tested during IVM. The oocytes were then fertilized in vitro, and the presumptive zygotes were cultured until reaching the blastocyst stage. There was no interaction between temperature and IGF-I concentration for any variable evaluated (P > 0.05). The addition of IGF-I did not alter the proportion of nuclear maturation, TUNEL-positive oocytes and caspase-3 activity, or blastocyst proportion on Days 7 and 8 post-fertilization. Furthermore, the total number of cells and the number of cells in the inner cell mass (ICM) in the blastocyst were not altered (P > 0.05). However, IGF-I increased (P < 0.05) the mitochondrial membrane potential and the production of ROS in oocytes and decreased (P < 0.05) the proportion of apoptotic cells in the ICM in blastocysts. Heat shock increased (P < 0.05) the proportion of TUNEL-positive oocytes and ROS production and reduced (P < 0.05) the mitochondrial membrane potential. Moreover, heat shock increased (P < 0.05) the apoptosis proportion in the ICM cells. In conclusion, supplementing IVM mediumwith IGF-I may increase the mitochondrial membrane potential and ROS production in oocytes and decrease apoptosis in the ICM in blastocysts. Heat shock for 12 h compromised oocyte developmental competence and increased apoptosis within the ICM cells of the blastocysts. MenosAbstract This study was performed to investigate the effects of insulin-like growth factor-I (IGF-I) addition to in vitro maturation (IVM) medium on apoptosis, mitochondrial membrane potential, ROS production, and developmental competence of bovine oocytes subjected to heat shock. Two temperatures (conventional: 24 h at 38.5C, or heat shock: 12 h at 41C followed by 12 h at 38.5C) and 3 IGF-I concentrations (0, 25, and 100 ng/mL) were tested during IVM. The oocytes were then fertilized in vitro, and the presumptive zygotes were cultured until reaching the blastocyst stage. There was no interaction between temperature and IGF-I concentration for any variable evaluated (P > 0.05). The addition of IGF-I did not alter the proportion of nuclear maturation, TUNEL-positive oocytes and caspase-3 activity, or blastocyst proportion on Days 7 and 8 post-fertilization. Furthermore, the total number of cells and the number of cells in the inner cell mass (ICM) in the blastocyst were not altered (P > 0.05). However, IGF-I increased (P < 0.05) the mitochondrial membrane potential and the production of ROS in oocytes and decreased (P < 0.05) the proportion of apoptotic cells in the ICM in blastocysts. Heat shock increased (P < 0.05) the proportion of TUNEL-positive oocytes and ROS production and reduced (P < 0.05) the mitochondrial membrane potential. Moreover, heat shock increased (P < 0.05) the apoptosis proportion in the ICM cells. In conclusion, supplementing IVM mediumwith IGF-I may inc... Mostrar Tudo |
Palavras-Chave: |
Mitochondrial membrane potential; ROS production; Thermoprotection. |
Thesaurus Nal: |
DNA fragmentation; heat stress. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 02716naa a2200277 a 4500 001 2085044 005 2023-01-27 008 2017 bl uuuu u00u1 u #d 024 7 $a10.1016/j.domaniend.2017.03.003$2DOI 100 1 $aASCARI, I. J. 245 $aAddition of insulin-like growth factor I to the maturation medium of bovine oocytes subjected to heat shock$beffects on the production of reactive oxygen species, mitochondrial activity and oocyte competence.$h[electronic resource] 260 $c2017 520 $aAbstract This study was performed to investigate the effects of insulin-like growth factor-I (IGF-I) addition to in vitro maturation (IVM) medium on apoptosis, mitochondrial membrane potential, ROS production, and developmental competence of bovine oocytes subjected to heat shock. Two temperatures (conventional: 24 h at 38.5C, or heat shock: 12 h at 41C followed by 12 h at 38.5C) and 3 IGF-I concentrations (0, 25, and 100 ng/mL) were tested during IVM. The oocytes were then fertilized in vitro, and the presumptive zygotes were cultured until reaching the blastocyst stage. There was no interaction between temperature and IGF-I concentration for any variable evaluated (P > 0.05). The addition of IGF-I did not alter the proportion of nuclear maturation, TUNEL-positive oocytes and caspase-3 activity, or blastocyst proportion on Days 7 and 8 post-fertilization. Furthermore, the total number of cells and the number of cells in the inner cell mass (ICM) in the blastocyst were not altered (P > 0.05). However, IGF-I increased (P < 0.05) the mitochondrial membrane potential and the production of ROS in oocytes and decreased (P < 0.05) the proportion of apoptotic cells in the ICM in blastocysts. Heat shock increased (P < 0.05) the proportion of TUNEL-positive oocytes and ROS production and reduced (P < 0.05) the mitochondrial membrane potential. Moreover, heat shock increased (P < 0.05) the apoptosis proportion in the ICM cells. In conclusion, supplementing IVM mediumwith IGF-I may increase the mitochondrial membrane potential and ROS production in oocytes and decrease apoptosis in the ICM in blastocysts. Heat shock for 12 h compromised oocyte developmental competence and increased apoptosis within the ICM cells of the blastocysts. 650 $aDNA fragmentation 650 $aheat stress 653 $aMitochondrial membrane potential 653 $aROS production 653 $aThermoprotection 700 1 $aALVES, N. G. 700 1 $aJASMIN, J. 700 1 $aLIMA, R. R. 700 1 $aQUINTAO, C. C. R. 700 1 $aOBERLENDER, G. 700 1 $aMORAES, E. A. 700 1 $aCAMARGO, L. S. de A. 773 $tDomestic Animal Endocrinology$gv. 60, p. 50-60, 2017.
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Embrapa Gado de Leite (CNPGL) |
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Registro Completo
Biblioteca(s): |
Embrapa Agricultura Digital; Embrapa Territorial. |
Data corrente: |
20/07/2018 |
Data da última atualização: |
30/12/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
MAZONI, I.; BORRO, L. C.; JARDINE, J. G.; YANO, I. H.; SALIM, J. A.; NESHICH, G. |
Afiliação: |
IVAN MAZONI, CNPTIA; LUIZ CÉSAR BORRO, IB/Unicamp; JOSE GILBERTO JARDINE, CNPM; INACIO HENRIQUE YANO, CNPTIA; JOSÉ AUGUSTO SALIM, USP; GORAN NESIC, CNPTIA. |
Título: |
Study of specific nanoenvironments containing [alfa]-helices in all-[alfa] and ([alfa]+[beta])+([alfa]/[beta]) proteins. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Plos One, v. 13, n. 7, p. 1-25, 2018. |
DOI: |
https://doi.org/10.1371/journal.pone.0200018 |
Idioma: |
Inglês |
Notas: |
Artigo e0200018. |
Conteúdo: |
Protein secondary structure elements (PSSEs) such as [alfa]-helices, [beta]-strands, and turns are the primary building blocks of the tertiary protein structure. Our primary interest here is to reveal the characteristics of the nanoenvironment formed by both PSSEs and their surrounding amino acid residues (AARs), which might contribute to the general understanding of how proteins fold. |
Palavras-Chave: |
Amino acid residues; Blue Star STING; Estrutura secundária de proteína; Kolmogorov-Smirnov test; MANOVA; Protein secondary structure elements; Student's t-test; Teste estatístico. |
Thesagro: |
Aminoácido; Proteína. |
Thesaurus NAL: |
Amino acids; Proteins; Statistical analysis. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/180038/1/journal.pone.0200018.pdf
|
Marc: |
LEADER 01480naa a2200361 a 4500 001 2093429 005 2020-12-30 008 2018 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1371/journal.pone.0200018$2DOI 100 1 $aMAZONI, I. 245 $aStudy of specific nanoenvironments containing [alfa]-helices in all-[alfa] and ([alfa]+[beta])+([alfa]/[beta]) proteins.$h[electronic resource] 260 $c2018 500 $aArtigo e0200018. 520 $aProtein secondary structure elements (PSSEs) such as [alfa]-helices, [beta]-strands, and turns are the primary building blocks of the tertiary protein structure. Our primary interest here is to reveal the characteristics of the nanoenvironment formed by both PSSEs and their surrounding amino acid residues (AARs), which might contribute to the general understanding of how proteins fold. 650 $aAmino acids 650 $aProteins 650 $aStatistical analysis 650 $aAminoácido 650 $aProteína 653 $aAmino acid residues 653 $aBlue Star STING 653 $aEstrutura secundária de proteína 653 $aKolmogorov-Smirnov test 653 $aMANOVA 653 $aProtein secondary structure elements 653 $aStudent's t-test 653 $aTeste estatístico 700 1 $aBORRO, L. C. 700 1 $aJARDINE, J. G. 700 1 $aYANO, I. H. 700 1 $aSALIM, J. A. 700 1 $aNESHICH, G. 773 $tPlos One$gv. 13, n. 7, p. 1-25, 2018.
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