Expression of leptin receptor mRNA in cumulus cells is correlated with expression of PTX3
Expression of leptin receptor mRNA in cumulus cells is correlated with expression of PTX3
This study investigated the role of the leptin system in human oocyte maturation and its prognostic value for IVF outcome. The protein concentrations of leptin and soluble leptin receptor in follicular fluid were determined and the free leptin index (FLI) were established. Additionally, mRNA expression levels of different leptin receptor (ObR) isoforms and of PTX3 and HAS2 in cumulus cells were quantified, mutually compared and analysed relative to FLI, body mass index, age and number of retrieved oocytes.
Expression of all target genes was detected in the cumulus cells, with relatively low concentrations of ObR-Long. Strong mutual correlations were found between mRNA expression levels of leptin receptor isoforms (P<0.001) and also between the short isoforms of the leptin receptor and PTX3 (P<0.001). Although the mean values of the pregnant and non-pregnant groups did not differ significantly for any of the variables, the chance that treatment resulted in ongoing pregnancy was higher with leptin 0.5ng/mg protein compared with concentrations >0.5ng/mg protein (P<0.05).
It is concluded that the leptin system appears to play a role in the IVF protocol, whereby signal transduction in cumulus cells occurs predominantly via the short isoforms of ObR.
BMI, IVF, leptin, ObR, PTX3, reproduction
van Tol, Helena T. A.
1008ae45-3de9-4c9a-a084-c506c676a2aa
Vernooij, Johannes C. M.
2b8c0b9a-91a4-4758-bd7e-270f19a28042
Colenbrander, Ben
2a4d14fc-7acc-4a45-a897-a42f9c1d628f
Gutknecht, Dagmar
ab313e78-c64f-441f-b5f6-04351e25ff2d
Macklon, Nicholas S.
7db1f4fc-a9f6-431f-a1f2-297bb8c9fb7e
Roelen, Bernard A. J.
f92635f7-a923-40fc-9121-8fc05fda0f89
van Tol, Helena T. A.
1008ae45-3de9-4c9a-a084-c506c676a2aa
Vernooij, Johannes C. M.
2b8c0b9a-91a4-4758-bd7e-270f19a28042
Colenbrander, Ben
2a4d14fc-7acc-4a45-a897-a42f9c1d628f
Gutknecht, Dagmar
ab313e78-c64f-441f-b5f6-04351e25ff2d
Macklon, Nicholas S.
7db1f4fc-a9f6-431f-a1f2-297bb8c9fb7e
Roelen, Bernard A. J.
f92635f7-a923-40fc-9121-8fc05fda0f89
van Tol, Helena T. A., Vernooij, Johannes C. M., Colenbrander, Ben, Gutknecht, Dagmar, Macklon, Nicholas S. and Roelen, Bernard A. J.
(2010)
Expression of leptin receptor mRNA in cumulus cells is correlated with expression of PTX3.
Reproductive BioMedicine Online.
(doi:10.1016/j.rbmo.2010.03.003).
(Submitted)
Abstract
This study investigated the role of the leptin system in human oocyte maturation and its prognostic value for IVF outcome. The protein concentrations of leptin and soluble leptin receptor in follicular fluid were determined and the free leptin index (FLI) were established. Additionally, mRNA expression levels of different leptin receptor (ObR) isoforms and of PTX3 and HAS2 in cumulus cells were quantified, mutually compared and analysed relative to FLI, body mass index, age and number of retrieved oocytes.
Expression of all target genes was detected in the cumulus cells, with relatively low concentrations of ObR-Long. Strong mutual correlations were found between mRNA expression levels of leptin receptor isoforms (P<0.001) and also between the short isoforms of the leptin receptor and PTX3 (P<0.001). Although the mean values of the pregnant and non-pregnant groups did not differ significantly for any of the variables, the chance that treatment resulted in ongoing pregnancy was higher with leptin 0.5ng/mg protein compared with concentrations >0.5ng/mg protein (P<0.05).
It is concluded that the leptin system appears to play a role in the IVF protocol, whereby signal transduction in cumulus cells occurs predominantly via the short isoforms of ObR.
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Submitted date: 6 March 2010
Keywords:
BMI, IVF, leptin, ObR, PTX3, reproduction
Identifiers
Local EPrints ID: 150451
URI: http://eprints.soton.ac.uk/id/eprint/150451
ISSN: 1472-6483
PURE UUID: b70cc56a-d5f1-4ec9-b797-55eb7977bf69
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Date deposited: 05 May 2010 14:19
Last modified: 14 Mar 2024 01:17
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Contributors
Author:
Helena T. A. van Tol
Author:
Johannes C. M. Vernooij
Author:
Ben Colenbrander
Author:
Dagmar Gutknecht
Author:
Nicholas S. Macklon
Author:
Bernard A. J. Roelen
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