INVESTIGADORES
PERAL GARCIA Pilar
artículos
Título:
Metabolic requirements associated with GSH synthesis during in vitro maduration of bovine oocytes
Autor/es:
FURNUS C.C.; DE MATOS D.G.; PICCO S.; PERAL GARCIA P.; INDA A.M.; MATTIOLI G.; ERRECALDE A.L.
Revista:
ANIMAL REPRODUCTION SCIENCE
Editorial:
Elselvier
Referencias:
Año: 2008 vol. 109 p. 88 - 99
ISSN:
0378-4320
Resumen:
Abstract
Glutathione (GSH) concentration increases in bovine oocytes during in vitro maturation (IVM). The
constitutive amino acids involved in GSH synthesis are glycine (Gly), glutamate (Glu) and cysteine (Cys).
The present study was conducted to investigate the effect of the availability of glucose, Cys, Gly and Glu
on GSH synthesis during IVM. The effect of the amino acid serine (Ser) on intracellular reduced/oxidized
glutathione (GSH/GSSG) content in both oocytes and cumulus cells was also studied. Cumulusoocyte
complexes (COC) of cattle obtained from ovaries collected from an abattoir were matured in synthetic oviduct
fluid (SOF) medium containing 8 mg/ml bovine serum albumin-fatty acid-free (BSA-FAF), 10 g/ml LH,
1g/ml porcine FSH (pFSH) and 1 g/ml 17 beta-estradiol (17-E2). GSH/GSSG content was measured
using a double-beam spectrophotometer. The COC were cultured in SOF supplemented with 1.5mM or
5.6mM glucose (Exp. 1); with or without Cys + Glu + Gly (Exp. 2); with the omission of one constitutive
GSH amino acid (Exp. 3); with 0.6mM Cys or Cys + Ser (Exp. 4). The developmental capacity of oocytes
matured in IVM medium supplemented with Cys and the cell number per blastocyst were determined (Exp.
5). The results reported here indicate (1) no differences in the intracellular GSH/GSSG content at any glucose
concentrations. Also, cumulus cell number per COC did not differ either before or after IVM (Exp. 1). (2)
Glutathione content in oocytes matured in SOF alone were significantly different from oocytes incubated
with SOF supplemented with Cys + Glu + Gly (Exp. 2). (3) Addition of Cys to maturation medium, either
using a double-beam spectrophotometer. The COC were cultured in SOF supplemented with 1.5mM or
5.6mM glucose (Exp. 1); with or without Cys + Glu + Gly (Exp. 2); with the omission of one constitutive
GSH amino acid (Exp. 3); with 0.6mM Cys or Cys + Ser (Exp. 4). The developmental capacity of oocytes
matured in IVM medium supplemented with Cys and the cell number per blastocyst were determined (Exp.
5). The results reported here indicate (1) no differences in the intracellular GSH/GSSG content at any glucose
concentrations. Also, cumulus cell number per COC did not differ either before or after IVM (Exp. 1). (2)
Glutathione content in oocytes matured in SOF alone were significantly different from oocytes incubated
with SOF supplemented with Cys + Glu + Gly (Exp. 2). (3) Addition of Cys to maturation medium, either
using a double-beam spectrophotometer. The COC were cultured in SOF supplemented with 1.5mM or
5.6mM glucose (Exp. 1); with or without Cys + Glu + Gly (Exp. 2); with the omission of one constitutive
GSH amino acid (Exp. 3); with 0.6mM Cys or Cys + Ser (Exp. 4). The developmental capacity of oocytes
matured in IVM medium supplemented with Cys and the cell number per blastocyst were determined (Exp.
5). The results reported here indicate (1) no differences in the intracellular GSH/GSSG content at any glucose
concentrations. Also, cumulus cell number per COC did not differ either before or after IVM (Exp. 1). (2)
Glutathione content in oocytes matured in SOF alone were significantly different from oocytes incubated
with SOF supplemented with Cys + Glu + Gly (Exp. 2). (3) Addition of Cys to maturation medium, either
using a double-beam spectrophotometer. The COC were cultured in SOF supplemented with 1.5mM or
5.6mM glucose (Exp. 1); with or without Cys + Glu + Gly (Exp. 2); with the omission of one constitutive
GSH amino acid (Exp. 3); with 0.6mM Cys or Cys + Ser (Exp. 4). The developmental capacity of oocytes
matured in IVM medium supplemented with Cys and the cell number per blastocyst were determined (Exp.
5). The results reported here indicate (1) no differences in the intracellular GSH/GSSG content at any glucose
concentrations. Also, cumulus cell number per COC did not differ either before or after IVM (Exp. 1). (2)
Glutathione content in oocytes matured in SOF alone were significantly different from oocytes incubated
with SOF supplemented with Cys + Glu + Gly (Exp. 2). (3) Addition of Cys to maturation medium, either
constitutive amino acids involved in GSH synthesis are glycine (Gly), glutamate (Glu) and cysteine (Cys).
The present study was conducted to investigate the effect of the availability of glucose, Cys, Gly and Glu
on GSH synthesis during IVM. The effect of the amino acid serine (Ser) on intracellular reduced/oxidized
glutathione (GSH/GSSG) content in both oocytes and cumulus cells was also studied. Cumulusoocyte
complexes (COC) of cattle obtained from ovaries collected from an abattoir were matured in synthetic oviduct
fluid (SOF) medium containing 8 mg/ml bovine serum albumin-fatty acid-free (BSA-FAF), 10 g/ml LH,
1g/ml porcine FSH (pFSH) and 1 g/ml 17 beta-estradiol (17-E2). GSH/GSSG content was measured
using a double-beam spectrophotometer. The COC were cultured in SOF supplemented with 1.5mM or
5.6mM glucose (Exp. 1); with or without Cys + Glu + Gly (Exp. 2); with the omission of one constitutive
GSH amino acid (Exp. 3); with 0.6mM Cys or Cys + Ser (Exp. 4). The developmental capacity of oocytes
matured in IVM medium supplemented with Cys and the cell number per blastocyst were determined (Exp.
5). The results reported here indicate (1) no differences in the intracellular GSH/GSSG content at any glucose
concentrations. Also, cumulus cell number per COC did not differ either before or after IVM (Exp. 1). (2)
Glutathione content in oocytes matured in SOF alone were significantly different from oocytes incubated
with SOF supplemented with Cys + Glu + Gly (Exp. 2). (3) Addition of Cys to maturation medium, either
using a double-beam spectrophotometer. The COC were cultured in SOF supplemented with 1.5mM or
5.6mM glucose (Exp. 1); with or without Cys + Glu + Gly (Exp. 2); with the omission of one constitutive
GSH amino acid (Exp. 3); with 0.6mM Cys or Cys + Ser (Exp. 4). The developmental capacity of oocytes
matured in IVM medium supplemented with Cys and the cell number per blastocyst were determined (Exp.
5). The results reported here indicate (1) no differences in the intracellular GSH/GSSG content at any glucose
concentrations. Also, cumulus cell number per COC did not differ either before or after IVM (Exp. 1). (2)
Glutathione content in oocytes matured in SOF alone were significantly different from oocytes incubated
with SOF supplemented with Cys + Glu + Gly (Exp. 2). (3) Addition of Cys to maturation medium, either
using a double-beam spectrophotometer. The COC were cultured in SOF supplemented with 1.5mM or
5.6mM glucose (Exp. 1); with or without Cys + Glu + Gly (Exp. 2); with the omission of one constitutive
GSH amino acid (Exp. 3); with 0.6mM Cys or Cys + Ser (Exp. 4). The developmental capacity of oocytes
matured in IVM medium supplemented with Cys and the cell number per blastocyst were determined (Exp.
5). The results reported here indicate (1) no differences in the intracellular GSH/GSSG content at any glucose
concentrations. Also, cumulus cell number per COC did not differ either before or after IVM (Exp. 1). (2)
Glutathione content in oocytes matured in SOF alone were significantly different from oocytes incubated
with SOF supplemented with Cys + Glu + Gly (Exp. 2). (3) Addition of Cys to maturation medium, either
using a double-beam spectrophotometer. The COC were cultured in SOF supplemented with 1.5mM or
5.6mM glucose (Exp. 1); with or without Cys + Glu + Gly (Exp. 2); with the omission of one constitutive
GSH amino acid (Exp. 3); with 0.6mM Cys or Cys + Ser (Exp. 4). The developmental capacity of oocytes
matured in IVM medium supplemented with Cys and the cell number per blastocyst were determined (Exp.
5). The results reported here indicate (1) no differences in the intracellular GSH/GSSG content at any glucose
concentrations. Also, cumulus cell number per COC did not differ either before or after IVM (Exp. 1). (2)
Glutathione content in oocytes matured in SOF alone were significantly different from oocytes incubated
with SOF supplemented with Cys + Glu + Gly (Exp. 2). (3) Addition of Cys to maturation medium, either
constitutive amino acids involved in GSH synthesis are glycine (Gly), glutamate (Glu) and cysteine (Cys).
The present study was conducted to investigate the effect of the availability of glucose, Cys, Gly and Glu
on GSH synthesis during IVM. The effect of the amino acid serine (Ser) on intracellular reduced/oxidized
glutathione (GSH/GSSG) content in both oocytes and cumulus cells was also studied. Cumulusoocyte
complexes (COC) of cattle obtained from ovaries collected from an abattoir were matured in synthetic oviduct
fluid (SOF) medium containing 8 mg/ml bovine serum albumin-fatty acid-free (BSA-FAF), 10 g/ml LH,
1g/ml porcine FSH (pFSH) and 1 g/ml 17 beta-estradiol (17-E2). GSH/GSSG content was measured
using a double-beam spectrophotometer. The COC were cultured in SOF supplemented with 1.5mM or
5.6mM glucose (Exp. 1); with or without Cys + Glu + Gly (Exp. 2); with the omission of one constitutive
GSH amino acid (Exp. 3); with 0.6mM Cys or Cys + Ser (Exp. 4). The developmental capacity of oocytes
matured in IVM medium supplemented with Cys and the cell number per blastocyst were determined (Exp.
5). The results reported here indicate (1) no differences in the intracellular GSH/GSSG content at any glucose
concentrations. Also, cumulus cell number per COC did not differ either before or after IVM (Exp. 1). (2)
Glutathione content in oocytes matured in SOF alone were significantly different from oocytes incubated
with SOF supplemented with Cys + Glu + Gly (Exp. 2). (3) Addition of Cys to maturation medium, either
using a double-beam spectrophotometer. The COC were cultured in SOF supplemented with 1.5mM or
5.6mM glucose (Exp. 1); with or without Cys + Glu + Gly (Exp. 2); with the omission of one constitutive
GSH amino acid (Exp. 3); with 0.6mM Cys or Cys + Ser (Exp. 4). The developmental capacity of oocytes
matured in IVM medium supplemented with Cys and the cell number per blastocyst were determined (Exp.
5). The results reported here indicate (1) no differences in the intracellular GSH/GSSG content at any glucose
concentrations. Also, cumulus cell number per COC did not differ either before or after IVM (Exp. 1). (2)
Glutathione content in oocytes matured in SOF alone were significantly different from oocytes incubated
with SOF supplemented with Cys + Glu + Gly (Exp. 2). (3) Addition of Cys to maturation medium, either
using a double-beam spectrophotometer. The COC were cultured in SOF supplemented with 1.5mM or
5.6mM glucose (Exp. 1); with or without Cys + Glu + Gly (Exp. 2); with the omission of one constitutive
GSH amino acid (Exp. 3); with 0.6mM Cys or Cys + Ser (Exp. 4). The developmental capacity of oocytes
matured in IVM medium supplemented with Cys and the cell number per blastocyst were determined (Exp.
5). The results reported here indicate (1) no differences in the intracellular GSH/GSSG content at any glucose
concentrations. Also, cumulus cell number per COC did not differ either before or after IVM (Exp. 1). (2)
Glutathione content in oocytes matured in SOF alone were significantly different from oocytes incubated
with SOF supplemented with Cys + Glu + Gly (Exp. 2). (3) Addition of Cys to maturation medium, either
using a double-beam spectrophotometer. The COC were cultured in SOF supplemented with 1.5mM or
5.6mM glucose (Exp. 1); with or without Cys + Glu + Gly (Exp. 2); with the omission of one constitutive
GSH amino acid (Exp. 3); with 0.6mM Cys or Cys + Ser (Exp. 4). The developmental capacity of oocytes
matured in IVM medium supplemented with Cys and the cell number per blastocyst were determined (Exp.
5). The results reported here indicate (1) no differences in the intracellular GSH/GSSG content at any glucose
concentrations. Also, cumulus cell number per COC did not differ either before or after IVM (Exp. 1). (2)
Glutathione content in oocytes matured in SOF alone were significantly different from oocytes incubated
with SOF supplemented with Cys + Glu + Gly (Exp. 2). (3) Addition of Cys to maturation medium, either
constitutive amino acids involved in GSH synthesis are glycine (Gly), glutamate (Glu) and cysteine (Cys).
The present study was conducted to investigate the effect of the availability of glucose, Cys, Gly and Glu
on GSH synthesis during IVM. The effect of the amino acid serine (Ser) on intracellular reduced/oxidized
glutathione (GSH/GSSG) content in both oocytes and cumulus cells was also studied. Cumulusoocyte
complexes (COC) of cattle obtained from ovaries collected from an abattoir were matured in synthetic oviduct
fluid (SOF) medium containing 8 mg/ml bovine serum albumin-fatty acid-free (BSA-FAF), 10 g/ml LH,
1g/ml porcine FSH (pFSH) and 1 g/ml 17 beta-estradiol (17-E2). GSH/GSSG content was measured
using a double-beam spectrophotometer. The COC were cultured in SOF supplemented with 1.5mM or
5.6mM glucose (Exp. 1); with or without Cys + Glu + Gly (Exp. 2); with the omission of one constitutive
GSH amino acid (Exp. 3); with 0.6mM Cys or Cys + Ser (Exp. 4). The developmental capacity of oocytes
matured in IVM medium supplemented with Cys and the cell number per blastocyst were determined (Exp.
5). The results reported here indicate (1) no differences in the intracellular GSH/GSSG content at any glucose
concentrations. Also, cumulus cell number per COC did not differ either before or after IVM (Exp. 1). (2)
Glutathione content in oocytes matured in SOF alone were significantly different from oocytes incubated
with SOF supplemented with Cys + Glu + Gly (Exp. 2). (3) Addition of Cys to maturation medium, either
using a double-beam spectrophotometer. The COC were cultured in SOF supplemented with 1.5mM or
5.6mM glucose (Exp. 1); with or without Cys + Glu + Gly (Exp. 2); with the omission of one constitutive
GSH amino acid (Exp. 3); with 0.6mM Cys or Cys + Ser (Exp. 4). The developmental capacity of oocytes
matured in IVM medium supplemented with Cys and the cell number per blastocyst were determined (Exp.
5). The results reported here indicate (1) no differences in the intracellular GSH/GSSG content at any glucose
concentrations. Also, cumulus cell number per COC did not differ either before or after IVM (Exp. 1). (2)
Glutathione content in oocytes matured in SOF alone were significantly different from oocytes incubated
with SOF supplemented with Cys + Glu + Gly (Exp. 2). (3) Addition of Cys to maturation medium, either
using a double-beam spectrophotometer. The COC were cultured in SOF supplemented with 1.5mM or
5.6mM glucose (Exp. 1); with or without Cys + Glu + Gly (Exp. 2); with the omission of one constitutive
GSH amino acid (Exp. 3); with 0.6mM Cys or Cys + Ser (Exp. 4). The developmental capacity of oocytes
matured in IVM medium supplemented with Cys and the cell number per blastocyst were determined (Exp.
5). The results reported here indicate (1) no differences in the intracellular GSH/GSSG content at any glucose
concentrations. Also, cumulus cell number per COC did not differ either before or after IVM (Exp. 1). (2)
Glutathione content in oocytes matured in SOF alone were significantly different from oocytes incubated
with SOF supplemented with Cys + Glu + Gly (Exp. 2). (3) Addition of Cys to maturation medium, either
using a double-beam spectrophotometer. The COC were cultured in SOF supplemented with 1.5mM or
5.6mM glucose (Exp. 1); with or without Cys + Glu + Gly (Exp. 2); with the omission of one constitutive
GSH amino acid (Exp. 3); with 0.6mM Cys or Cys + Ser (Exp. 4). The developmental capacity of oocytes
matured in IVM medium supplemented with Cys and the cell number per blastocyst were determined (Exp.
5). The results reported here indicate (1) no differences in the intracellular GSH/GSSG content at any glucose
concentrations. Also, cumulus cell number per COC did not differ either before or after IVM (Exp. 1). (2)
Glutathione content in oocytes matured in SOF alone were significantly different from oocytes incubated
with SOF supplemented with Cys + Glu + Gly (Exp. 2). (3) Addition of Cys to maturation medium, either
in vitro maturation (IVM). The
constitutive amino acids involved in GSH synthesis are glycine (Gly), glutamate (Glu) and cysteine (Cys).
The present study was conducted to investigate the effect of the availability of glucose, Cys, Gly and Glu
on GSH synthesis during IVM. The effect of the amino acid serine (Ser) on intracellular reduced/oxidized
glutathione (GSH/GSSG) content in both oocytes and cumulus cells was also studied. Cumulusoocyte
complexes (COC) of cattle obtained from ovaries collected from an abattoir were matured in synthetic oviduct
fluid (SOF) medium containing 8 mg/ml bovine serum albumin-fatty acid-free (BSA-FAF), 10 g/ml LH,
1g/ml porcine FSH (pFSH) and 1 g/ml 17 beta-estradiol (17-E2). GSH/GSSG content was measured
using a double-beam spectrophotometer. The COC were cultured in SOF supplemented with 1.5mM or
5.6mM glucose (Exp. 1); with or without Cys + Glu + Gly (Exp. 2); with the omission of one constitutive
GSH amino acid (Exp. 3); with 0.6mM Cys or Cys + Ser (Exp. 4). The developmental capacity of oocytes
matured in IVM medium supplemented with Cys and the cell number per blastocyst were determined (Exp.
5). The results reported here indicate (1) no differences in the intracellular GSH/GSSG content at any glucose
concentrations. Also, cumulus cell number per COC did not differ either before or after IVM (Exp. 1). (2)
Glutathione content in oocytes matured in SOF alone were significantly different from oocytes incubated
with SOF supplemented with Cys + Glu + Gly (Exp. 2). (3) Addition of Cys to maturation medium, either
using a double-beam spectrophotometer. The COC were cultured in SOF supplemented with 1.5mM or
5.6mM glucose (Exp. 1); with or without Cys + Glu + Gly (Exp. 2); with the omission of one constitutive
GSH amino acid (Exp. 3); with 0.6mM Cys or Cys + Ser (Exp. 4). The developmental capacity of oocytes
matured in IVM medium supplemented with Cys and the cell number per blastocyst were determined (Exp.
5). The results reported here indicate (1) no differences in the intracellular GSH/GSSG content at any glucose
concentrations. Also, cumulus cell number per COC did not differ either before or after IVM (Exp. 1). (2)
Glutathione content in oocytes matured in SOF alone were significantly different from oocytes incubated
with SOF supplemented with Cys + Glu + Gly (Exp. 2). (3) Addition of Cys to maturation medium, either
using a double-beam spectrophotometer. The COC were cultured in SOF supplemented with 1.5mM or
5.6mM glucose (Exp. 1); with or without Cys + Glu + Gly (Exp. 2); with the omission of one constitutive
GSH amino acid (Exp. 3); with 0.6mM Cys or Cys + Ser (Exp. 4). The developmental capacity of oocytes
matured in IVM medium supplemented with Cys and the cell number per blastocyst were determined (Exp.
5). The results reported here indicate (1) no differences in the intracellular GSH/GSSG content at any glucose
concentrations. Also, cumulus cell number per COC did not differ either before or after IVM (Exp. 1). (2)
Glutathione content in oocytes matured in SOF alone were significantly different from oocytes incubated
with SOF supplemented with Cys + Glu + Gly (Exp. 2). (3) Addition of Cys to maturation medium, either
using a double-beam spectrophotometer. The COC were cultured in SOF supplemented with 1.5mM or
5.6mM glucose (Exp. 1); with or without Cys + Glu + Gly (Exp. 2); with the omission of one constitutive
GSH amino acid (Exp. 3); with 0.6mM Cys or Cys + Ser (Exp. 4). The developmental capacity of oocytes
matured in IVM medium supplemented with Cys and the cell number per blastocyst were determined (Exp.
5). The results reported here indicate (1) no differences in the intracellular GSH/GSSG content at any glucose
concentrations. Also, cumulus cell number per COC did not differ either before or after IVM (Exp. 1). (2)
Glutathione content in oocytes matured in SOF alone were significantly different from oocytes incubated
with SOF supplemented with Cys + Glu + Gly (Exp. 2). (3) Addition of Cys to maturation medium, either
-E2). GSH/GSSG content was measured
using a double-beam spectrophotometer. The COC were cultured in SOF supplemented with 1.5mM or
5.6mM glucose (Exp. 1); with or without Cys + Glu + Gly (Exp. 2); with the omission of one constitutive
GSH amino acid (Exp. 3); with 0.6mM Cys or Cys + Ser (Exp. 4). The developmental capacity of oocytes
matured in IVM medium supplemented with Cys and the cell number per blastocyst were determined (Exp.
5). The results reported here indicate (1) no differences in the intracellular GSH/GSSG content at any glucose
concentrations. Also, cumulus cell number per COC did not differ either before or after IVM (Exp. 1). (2)
Glutathione content in oocytes matured in SOF alone were significantly different from oocytes incubated
with SOF supplemented with Cys + Glu + Gly (Exp. 2). (3) Addition of Cys to maturation medium, either