Myo‐inositol alters the effects of glucose, leptin and insulin on placental palmitic acid and oleic acid metabolism
Well-regulated placental palmitic acid (PA) and oleic acid (OA) metabolism is vital for optimal placental function and fetal development, but dysregulation occurs with gestational diabetes (GDM). We hypothesized that such dysregulation might arise from increased maternofetal glucose, leptin or insul...
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| Published in | The Journal of physiology Vol. 601; no. 18; pp. 4151 - 4169 |
|---|---|
| Main Authors | , , , , , , , , , , , |
| Format | Journal Article |
| Language | English |
| Published |
England
Wiley Subscription Services, Inc
01.09.2023
John Wiley and Sons Inc |
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| Online Access | Get full text |
| ISSN | 0022-3751 1469-7793 1469-7793 |
| DOI | 10.1113/JP285036 |
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| Abstract | Well-regulated placental palmitic acid (PA) and oleic acid (OA) metabolism is vital for optimal placental function and fetal development, but dysregulation occurs with gestational diabetes (GDM). We hypothesized that such dysregulation might arise from increased maternofetal glucose, leptin or insulin concentrations present in GDM, and that dysregulated PA and OA lipid metabolism could be moderated by myo-inositol, a natural polyol and potential GDM intervention. Placental explants from 21 women were incubated with stable isotope-labelled
C-PA or
C-OA for 48 h. Explants were treated with glucose (5, 10 mm) or leptin (13 nm) or insulin (150 nm) in combination with myo-inositol (0.3, 30, 60 μm). Forty-seven
C-PA lipids and 37
C-OA lipids were measured by liquid chromatography-mass spectrometry (LCMS). Compared with controls (5 mm glucose), glucose (10 mm) increased 19
C-OA lipids and nine
C-PA lipids, but decreased
C-OA phosphatidylethanolamine 38:5 and
C-PA phosphatidylethanolamine 36:4. The effects of leptin and insulin were less prominent than glucose, with leptin increasing
C-OA acylcarnitine 18:1, and insulin increasing four
C-PA triacylglycerides. Most glucose, leptin and insulin-induced alterations in lipids were attenuated by co-incubation with myo-inositol (30 or 60 μm), with attenuation also occurring in all subgroups stratified by GDM status and fetal sex. However, glucose-induced increases in acylcarnitine were not attenuated by myo-inositol and were even exaggerated in some instances. Myo-inositol therefore appears to generally act as a moderator, suppressing the perturbation of lipid metabolic processes by glucose, leptin and insulin in placenta in vitro. Whether myo-inositol protects the fetus and pregnancy from unfavourable outcomes requires further research. KEY POINTS: Incubation of placental explants with additional glucose, or to a lesser extent insulin or leptin, alters the placental production of
C-lipids from
C-palmitic acid (PA) and
C-oleic acid (OA) in vitro compared with untreated controls from the same placenta. Co-incubation with myo-inositol attenuated most alterations induced by glucose, insulin or leptin in
C-lipids, but did not affect alterations in
C-acylcarnitines. Alterations induced by glucose and leptin in
C-PA triacylglycerides and
C-PA phospholipids were influenced by fetal sex and gestational diabetes status, but were all still attenuated by myo-inositol co-incubation. Insulin differently affected
C-PA triacylglycerides and
C-PA phospholipids depending on fetal sex, with alterations also attenuated by myo-inositol co-incubation. |
|---|---|
| AbstractList | Well-regulated placental palmitic acid (PA) and oleic acid (OA) metabolism is vital for optimal placental function and fetal development, but dysregulation occurs with gestational diabetes (GDM). We hypothesized that such dysregulation might arise from increased maternofetal glucose, leptin or insulin concentrations present in GDM, and that dysregulated PA and OA lipid metabolism could be moderated by myo-inositol, a natural polyol and potential GDM intervention. Placental explants from 21 women were incubated with stable isotope-labelled 13 C-PA or 13 C-OA for 48 h. Explants were treated with glucose (5, 10 mm) or leptin (13 nm) or insulin (150 nm) in combination with myo-inositol (0.3, 30, 60 μm). Forty-seven 13 C-PA lipids and 37 13 C-OA lipids were measured by liquid chromatography-mass spectrometry (LCMS). Compared with controls (5 mm glucose), glucose (10 mm) increased 19 13 C-OA lipids and nine 13 C-PA lipids, but decreased 13 C-OA phosphatidylethanolamine 38:5 and 13 C-PA phosphatidylethanolamine 36:4. The effects of leptin and insulin were less prominent than glucose, with leptin increasing 13 C-OA acylcarnitine 18:1, and insulin increasing four 13 C-PA triacylglycerides. Most glucose, leptin and insulin-induced alterations in lipids were attenuated by co-incubation with myo-inositol (30 or 60 μm), with attenuation also occurring in all subgroups stratified by GDM status and fetal sex. However, glucose-induced increases in acylcarnitine were not attenuated by myo-inositol and were even exaggerated in some instances. Myo-inositol therefore appears to generally act as a moderator, suppressing the perturbation of lipid metabolic processes by glucose, leptin and insulin in placenta in vitro. Whether myo-inositol protects the fetus and pregnancy from unfavourable outcomes requires further research. KEY POINTS: Incubation of placental explants with additional glucose, or to a lesser extent insulin or leptin, alters the placental production of 13 C-lipids from 13 C-palmitic acid (PA) and 13 C-oleic acid (OA) in vitro compared with untreated controls from the same placenta. Co-incubation with myo-inositol attenuated most alterations induced by glucose, insulin or leptin in 13 C-lipids, but did not affect alterations in 13 C-acylcarnitines. Alterations induced by glucose and leptin in 13 C-PA triacylglycerides and 13 C-PA phospholipids were influenced by fetal sex and gestational diabetes status, but were all still attenuated by myo-inositol co-incubation. Insulin differently affected 13 C-PA triacylglycerides and 13 C-PA phospholipids depending on fetal sex, with alterations also attenuated by myo-inositol co-incubation.Well-regulated placental palmitic acid (PA) and oleic acid (OA) metabolism is vital for optimal placental function and fetal development, but dysregulation occurs with gestational diabetes (GDM). We hypothesized that such dysregulation might arise from increased maternofetal glucose, leptin or insulin concentrations present in GDM, and that dysregulated PA and OA lipid metabolism could be moderated by myo-inositol, a natural polyol and potential GDM intervention. Placental explants from 21 women were incubated with stable isotope-labelled 13 C-PA or 13 C-OA for 48 h. Explants were treated with glucose (5, 10 mm) or leptin (13 nm) or insulin (150 nm) in combination with myo-inositol (0.3, 30, 60 μm). Forty-seven 13 C-PA lipids and 37 13 C-OA lipids were measured by liquid chromatography-mass spectrometry (LCMS). Compared with controls (5 mm glucose), glucose (10 mm) increased 19 13 C-OA lipids and nine 13 C-PA lipids, but decreased 13 C-OA phosphatidylethanolamine 38:5 and 13 C-PA phosphatidylethanolamine 36:4. The effects of leptin and insulin were less prominent than glucose, with leptin increasing 13 C-OA acylcarnitine 18:1, and insulin increasing four 13 C-PA triacylglycerides. Most glucose, leptin and insulin-induced alterations in lipids were attenuated by co-incubation with myo-inositol (30 or 60 μm), with attenuation also occurring in all subgroups stratified by GDM status and fetal sex. However, glucose-induced increases in acylcarnitine were not attenuated by myo-inositol and were even exaggerated in some instances. Myo-inositol therefore appears to generally act as a moderator, suppressing the perturbation of lipid metabolic processes by glucose, leptin and insulin in placenta in vitro. Whether myo-inositol protects the fetus and pregnancy from unfavourable outcomes requires further research. KEY POINTS: Incubation of placental explants with additional glucose, or to a lesser extent insulin or leptin, alters the placental production of 13 C-lipids from 13 C-palmitic acid (PA) and 13 C-oleic acid (OA) in vitro compared with untreated controls from the same placenta. Co-incubation with myo-inositol attenuated most alterations induced by glucose, insulin or leptin in 13 C-lipids, but did not affect alterations in 13 C-acylcarnitines. Alterations induced by glucose and leptin in 13 C-PA triacylglycerides and 13 C-PA phospholipids were influenced by fetal sex and gestational diabetes status, but were all still attenuated by myo-inositol co-incubation. Insulin differently affected 13 C-PA triacylglycerides and 13 C-PA phospholipids depending on fetal sex, with alterations also attenuated by myo-inositol co-incubation. Abstract figure legend This study incubated placental explants with stable isotope labelled 13 C‐palmitic acid (PA) and 13 C‐oleic acid (OA) to assess the impact of glucose, insulin and leptin on placental lipid metabolism, and demonstrated that co‐treatment with myo‐inositol generally attenuated the effects of these factors, except the alterations in 13 C‐acylcarnitines. GDM: gestatonal diabetes, TG: triacylglyceride. Well‐regulated placental palmitic acid (PA) and oleic acid (OA) metabolism is vital for optimal placental function and fetal development, but dysregulation occurs with gestational diabetes (GDM). We hypothesized that such dysregulation might arise from increased maternofetal glucose, leptin or insulin concentrations present in GDM, and that dysregulated PA and OA lipid metabolism could be moderated by myo‐inositol, a natural polyol and potential GDM intervention. Placental explants from 21 women were incubated with stable isotope‐labelled 13C‐PA or 13C‐OA for 48 h. Explants were treated with glucose (5, 10 mm) or leptin (13 nm) or insulin (150 nm) in combination with myo‐inositol (0.3, 30, 60 μm). Forty‐seven 13C‐PA lipids and 37 13C‐OA lipids were measured by liquid chromatography–mass spectrometry (LCMS). Compared with controls (5 mm glucose), glucose (10 mm) increased 19 13C‐OA lipids and nine 13C‐PA lipids, but decreased 13C‐OA phosphatidylethanolamine 38:5 and 13C‐PA phosphatidylethanolamine 36:4. The effects of leptin and insulin were less prominent than glucose, with leptin increasing 13C‐OA acylcarnitine 18:1, and insulin increasing four 13C‐PA triacylglycerides. Most glucose, leptin and insulin‐induced alterations in lipids were attenuated by co‐incubation with myo‐inositol (30 or 60 μm), with attenuation also occurring in all subgroups stratified by GDM status and fetal sex. However, glucose‐induced increases in acylcarnitine were not attenuated by myo‐inositol and were even exaggerated in some instances. Myo‐inositol therefore appears to generally act as a moderator, suppressing the perturbation of lipid metabolic processes by glucose, leptin and insulin in placenta in vitro. Whether myo‐inositol protects the fetus and pregnancy from unfavourable outcomes requires further research.Key pointsIncubation of placental explants with additional glucose, or to a lesser extent insulin or leptin, alters the placental production of 13C‐lipids from 13C‐palmitic acid (PA) and 13C‐oleic acid (OA) in vitro compared with untreated controls from the same placenta.Co‐incubation with myo‐inositol attenuated most alterations induced by glucose, insulin or leptin in 13C‐lipids, but did not affect alterations in 13C‐acylcarnitines.Alterations induced by glucose and leptin in 13C‐PA triacylglycerides and 13C‐PA phospholipids were influenced by fetal sex and gestational diabetes status, but were all still attenuated by myo‐inositol co‐incubation.Insulin differently affected 13C‐PA triacylglycerides and 13C‐PA phospholipids depending on fetal sex, with alterations also attenuated by myo‐inositol co‐incubation. Well-regulated placental palmitic acid (PA) and oleic acid (OA) metabolism is vital for optimal placental function and fetal development, but dysregulation occurs with gestational diabetes (GDM). We hypothesized that such dysregulation might arise from increased maternofetal glucose, leptin or insulin concentrations present in GDM, and that dysregulated PA and OA lipid metabolism could be moderated by myo-inositol, a natural polyol and potential GDM intervention. Placental explants from 21 women were incubated with stable isotope-labelled C-PA or C-OA for 48 h. Explants were treated with glucose (5, 10 mm) or leptin (13 nm) or insulin (150 nm) in combination with myo-inositol (0.3, 30, 60 μm). Forty-seven C-PA lipids and 37 C-OA lipids were measured by liquid chromatography-mass spectrometry (LCMS). Compared with controls (5 mm glucose), glucose (10 mm) increased 19 C-OA lipids and nine C-PA lipids, but decreased C-OA phosphatidylethanolamine 38:5 and C-PA phosphatidylethanolamine 36:4. The effects of leptin and insulin were less prominent than glucose, with leptin increasing C-OA acylcarnitine 18:1, and insulin increasing four C-PA triacylglycerides. Most glucose, leptin and insulin-induced alterations in lipids were attenuated by co-incubation with myo-inositol (30 or 60 μm), with attenuation also occurring in all subgroups stratified by GDM status and fetal sex. However, glucose-induced increases in acylcarnitine were not attenuated by myo-inositol and were even exaggerated in some instances. Myo-inositol therefore appears to generally act as a moderator, suppressing the perturbation of lipid metabolic processes by glucose, leptin and insulin in placenta in vitro. Whether myo-inositol protects the fetus and pregnancy from unfavourable outcomes requires further research. KEY POINTS: Incubation of placental explants with additional glucose, or to a lesser extent insulin or leptin, alters the placental production of C-lipids from C-palmitic acid (PA) and C-oleic acid (OA) in vitro compared with untreated controls from the same placenta. Co-incubation with myo-inositol attenuated most alterations induced by glucose, insulin or leptin in C-lipids, but did not affect alterations in C-acylcarnitines. Alterations induced by glucose and leptin in C-PA triacylglycerides and C-PA phospholipids were influenced by fetal sex and gestational diabetes status, but were all still attenuated by myo-inositol co-incubation. Insulin differently affected C-PA triacylglycerides and C-PA phospholipids depending on fetal sex, with alterations also attenuated by myo-inositol co-incubation. |
| Author | Bendt, Anne K. Chan, Shiao‐Yng Pillai, Reshma Appukuttan Selvam, Preben Sharma, Neha Wenk, Markus R. Watkins, Oliver C. Yong, Hannah E.J. Lewis, Rohan M. Cracknell‐Hazra, Victoria K.B. Cazenave‐Gassiot, Amaury Godfrey, Keith M. |
| AuthorAffiliation | 5 MRC Lifecourse Epidemiology Centre and NIHR Southampton Biomedical Research Centre University of Southampton and University Hospital Southampton NHS Foundation Trust UK 1 Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine National University of Singapore Singapore 2 Singapore Institute for Clinical Sciences Agency for Science, Technology and Research Singapore 4 Singapore Lipidomics Incubator, Life Sciences Institute National University of Singapore Singapore 3 Department of Biochemistry, Yong Loo Lin School of Medicine and Precision Medicine TRP National University of Singapore Singapore |
| AuthorAffiliation_xml | – name: 3 Department of Biochemistry, Yong Loo Lin School of Medicine and Precision Medicine TRP National University of Singapore Singapore – name: 4 Singapore Lipidomics Incubator, Life Sciences Institute National University of Singapore Singapore – name: 5 MRC Lifecourse Epidemiology Centre and NIHR Southampton Biomedical Research Centre University of Southampton and University Hospital Southampton NHS Foundation Trust UK – name: 1 Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine National University of Singapore Singapore – name: 2 Singapore Institute for Clinical Sciences Agency for Science, Technology and Research Singapore |
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| Copyright | 2023 The Authors. The Journal of Physiology published by John Wiley & Sons Ltd on behalf of The Physiological Society. 2023. This article is published under http://creativecommons.org/licenses/by-nc-nd/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. 2023 The Authors. published by John Wiley & Sons Ltd on behalf of The Physiological Society. |
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| Keywords | fetal sex fatty acid placental metabolism stable isotope beta-oxidation gestational diabetes |
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| Snippet | Well-regulated placental palmitic acid (PA) and oleic acid (OA) metabolism is vital for optimal placental function and fetal development, but dysregulation... Well‐regulated placental palmitic acid (PA) and oleic acid (OA) metabolism is vital for optimal placental function and fetal development, but dysregulation... Abstract figure legend This study incubated placental explants with stable isotope labelled 13 C‐palmitic acid (PA) and 13 C‐oleic acid (OA) to assess the... |
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| SubjectTerms | Acids Diabetes mellitus Diabetes, Gestational Explants Female Fetuses Gestational diabetes Glucose Glucose - pharmacology Humans Inositol Insulin Leptin Leptin - pharmacology Lipid metabolism Lipids Liquid chromatography Mass spectroscopy Metabolism Oleic acid Oleic Acid - pharmacology Palmitic acid Palmitic Acid - pharmacology Phosphatidylethanolamine Phosphatidylethanolamines Phospholipids Placenta Placenta, Pregnancy, and Perinatal Physiology Pregnancy Pregnancy complications Sex |
| Title | Myo‐inositol alters the effects of glucose, leptin and insulin on placental palmitic acid and oleic acid metabolism |
| URI | https://www.ncbi.nlm.nih.gov/pubmed/37602663 https://www.proquest.com/docview/2864821885 https://www.proquest.com/docview/2854346706 https://pubmed.ncbi.nlm.nih.gov/PMC10952252 |
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