Showing posts with label growth. Show all posts
Showing posts with label growth. Show all posts

Tuesday, March 29, 2011

Anti-Mullerian hormone in short girls born small for gestational age and the effect of growth hormone treatment

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A.J. Lem1,2,*, V.H. Boonstra2, J.S. Renes2, P.E. Breukhoven2, F.H. de Jong3, J.S.E. Laven4 and A.C.S. Hokken-Koelega1,2
1Dutch Growth Research Foundation, P.O. Box 23068, 3001 KB Rotterdam, The Netherlands
2Division of Endocrinology, Department of Paediatrics, Sophia Children's Hospital, Erasmus MC, 3000 CA Rotterdam, The Netherlands
3Division of Endocrinology, Department of Internal Medicine, Erasmus MC, 3000 CA Rotterdam, The Netherlands
4Division of Reproductive Medicine, Department of Obstetrics and Gynaecology, Erasmus MC, 3000 CA Rotterdam, The Netherlands *Correspondence address. Tel: +31-10-22-515-33; Fax: +31-10-22-501-33; E-mail: a.lem{at}kindengroei.nlReceived October 8, 2010. Revision received November 18, 2010. Accepted December 14, 2010. Background Fetal growth restriction is thought to negatively influence reproductive function in later life. Serum anti-Müllerian hormone (AMH) is a marker of the primordial follicle pool. The objectives of this study were to evaluate the effect of being born small for gestational age (SGA) on serum AMH levels and to investigate the effect of growth hormone (GH) treatment on serum AMH levels in short SGA girls.

METHODS Serum AMH levels were investigated in 246 prepubertal girls aged 3–10 years: 119 untreated short SGA and 127 healthy controls. Associations between AMH levels and clinical characteristics were analysed using multiple regression analyses. In addition, we investigated the effect of GH treatment on serum AMH levels in short SGA girls.

RESULTS Serum AMH levels were similar in short SGA and healthy control girls (P= 0.95). In short SGA girls, AMH levels were not significantly influenced by birth weight standard deviation score (SDS), birth length SDS and gestational age, even after adjustment for age, height SDS and body mass index (BMI) SDS at sampling, socio-economic status and maternal smoking during gestation. Serum AMH levels did not change during 4 years of GH treatment in short SGA girls (P= 0.43).

ConclusionS Serum AMH levels in prepubertal short SGA girls are similar to healthy controls, indicating that the follicle pool is not compromised due to SGA birth. GH treatment has no effect on AMH levels in short SGA girls.

© The Author 2011. Published by Oxford University Press on behalf of the European Society of Human Reproduction and Embryology. All rights reserved. For Permissions, please email: journals.permissions@oup.com This ArticleHum. Reprod. (2011) 26 (4): 898-903. doi: 10.1093/humrep/deq391 First published online: January 12, 2011

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Friday, March 25, 2011

Association of polymorphisms/haplotypes of the genes encoding vascular endothelial growth factor and its KDR receptor with recurrent pregnancy loss

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Mei-Tsz Su1,2, Sheng-Hsiang Lin2, I-Wen Lee1, Yi-Chi Chen3 and Pao-Lin Kuo1,*
1Division of Genetics, Department of Obstetrics and Gynecology, National Cheng Kung University Hospital, 138 Sheng-Li Road, Tainan 704, Taiwan
2Graduate Institute of Clinical Medicine, National Cheng Kung University College of Medicine, Tainan, Taiwan
3Department of Economics, National Cheng Kung University, Tainan, Taiwan *Correspondence address. Fax: +886-6-276-6185; E-mail: paolink{at}mail.ncku.edu.twReceived October 17, 2010. Revision received November 22, 2010. Accepted December 17, 2010. BACKGROUND Vascular endothelial growth factor (VEGF) and its kinase insert domain receptor (KDR) play an important role in angiogenesis, and their gene expression patterns also suggest a close relationship with early pregnancy. However, limited information is available regarding the role of the VEGF system, especially its KDR receptor, in recurrent pregnancy loss (RPL). This study was conducted to investigate a genetic association between VEGF and its receptor gene (KDR) with idiopathic RPL.

METHODS In this case–control study, 115 women who had experienced at least two consecutive spontaneous miscarriages (n= 62 women with two miscarriages, n= 53 with three or more) and 170 controls were included. A total of 14 tag single-nucleotide polymorphisms (SNPs) of VEGF and KDR were selected from the HapMap Web site and three functional SNPs [rs1570360 (-1154G/A) of VEGF; rs2305948 (V297I) and rs1870377 (Q472H) of the KDR gene] were genotyped using primer extension analysis. We further used multifactor dimensionality reduction analysis to evaluate gene–gene interactions.

RESULTS One tag SNP (rs6838752) and the functional SNP (Q472H) of the KDR gene were in complete linkage and showed significant differences between patients and controls (P< 0.05). The frequencies of haplotypes of VEGF (A-T-G haplotype) and KDR (A-C-A-T-G haplotype) showed significant differences in patients versus controls (P< 0.05). All comparisons with controls remained significant when the subgroup of women with three or more miscarriages was analyzed.

CONCLUSIONS VEGF and its receptor gene (KDR) are associated with idiopathic RPL. The VEGF/KDR system jointly contributes to recurrent miscarriage in Taiwanese Han women.

© The Author 2011. Published by Oxford University Press on behalf of the European Society of Human Reproduction and Embryology. All rights reserved. For Permissions, please email: journals.permissions@oup.com This ArticleHum. Reprod. (2011) 26 (4): 758-764. doi: 10.1093/humrep/deq401 First published online: January 20, 2011

Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.



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Peliculas Online

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