Impact of periconceptional and gestational vitamin D3 restriction on fetal folliculogenesis and anti-mullerian hormone secretion using sheep as a model

Mbegbu, E. C., Salavati, M., Aka, L. O., Obidike, I. R., Tang, J. C. Y. ORCID: https://orcid.org/0000-0001-6305-6333, Fraser, W. D., Hanson, M. A., Green, L. R. and Fouladi-Nashta, A. A. (2024) Impact of periconceptional and gestational vitamin D3 restriction on fetal folliculogenesis and anti-mullerian hormone secretion using sheep as a model. Reproduction in Domestic Animals. ISSN 1439-0531 (In Press)

Microsoft Word (OpenXML) (Final Revision_Manuscript_Reproduction in Domestic Animals) - Accepted Version Restricted to Repository staff only until 31 December 2099. Available under License Unspecified licence. Request a copy

Abstract

Ovarian reserve is a reflection of the overall female reproductive potential. Vitamin D status has been suspected to influence fetal development and female fertility. As maternal diet during pregnancy can affect fetal development and future fertility, we hypothesized that periconceptional and gestational vitamin D restriction could affect folliculogenesis and AMH secretion in the offspring. Nineteen sexually mature Welsh mountain ewes were randomly assigned to vitamin D3 deficient (VDD, n=10) and vitamin D3 control (VDC, n=9) diets from 17 days (d) before mating, up to 127-130 d of gestation, when fetal ovaries were collected (3 from VDC and 6 from VDD). Serum 25(OH)D3 concentrations were lower in VDD compared with VDC (P < 0.05). Relative to total follicle number, the percentage of primordial follicles was higher (P < 0.05), while the percentage of primary follicles was lower (P < 0.05) in VDD group compared with VDC group fetal ovaries. The integrated density value and percentage of affected area in TUNEL staining in VDD group did not vary from VDC group fetal ovaries (P > 0.05). Relative expression of AMH mRNA and AMH protein in VDD fetal ovaries were not statistically different compared with controls (P > 0.05). The relative expression of VDR mRNA were lower in VDD compared with VDC group fetal ovaries (P < 0.05). These data indicate that maternal vitamin D dietary restriction is associated with ovarian tissue stemness and increased primordial follicle number, but does not promote normal follicle recruitment or development in sheep fetal ovaries.

Item Type:	Article
Additional Information:	Data availability statement: All the raw images from the study (H&E, TUNEL staining or IHC) are available upon request from the authors. Funding information: M.E.C. received from Tertiary Education Trust Fund (TETFund) AST&D University of Nigeria, Nsukka, with reference number UN/VC/T/19/N.2.
Faculty \ School:	Faculty of Medicine and Health Sciences > Norwich Medical School
UEA Research Groups:	Faculty of Medicine and Health Sciences > Research Groups > Musculoskeletal Medicine Faculty of Medicine and Health Sciences > Research Centres > Metabolic Health
Depositing User:	LivePure Connector
Date Deposited:	28 Aug 2024 10:30
Last Modified:	28 Aug 2024 10:30
URI:	https://ueaeprints.uea.ac.uk/id/eprint/96365
DOI:	issn:1439-0531

Actions (login required)

View Item