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Impact of Vitamine D Status on in Vitro Fertilization Outcomes (DFIV)

2026年6月23日 更新者:Nantes University Hospital

Evaluation of the Impact of Vitamine D Status on in Vitro Fertilization Outcomes in a Large Population of Infertile Women.

Non skeletal effect of vitamin D have been the focus of much interest in the past decade. During the last years, special attention has been given to the impact of vitamin D on human reproduction. Its receptor is expressed in most reproductive organs including hypothalamus, pituitary gland, uterus, ovary, mammary gland and the placenta. In vitro experiments suggest that vitamin D would be involved in regulated embryo-implantation. Concerning AMH, vitamin D seems to alters AMH signaling in human granulosa cells although their circulated levels are correlated in lated reproductive aged women. The results of precedents studies about the impact of vitamin D on IVF outcomes remain conflicting The aim of our study was to assess in a large unselected population of infertile women, the impact of vitamin D deficiency on IVF outcome and to examine the relationship between serum vitamin D levels and the ovarian reserve marker AMH.

研究概览

地位

撤销

条件

详细说明

Vitamin D was measured on the sixth day of stimulation. According to vitamin D level, women were divided into 2 groups (deficiency when 25(OH)D <20 ng/ml and sufficient when 25(OH)D >20 ng/ml).

Pregnancy rates were compared among these two groups after controlling age, BMI, characteristics of ovarian stimulation, number of ovocytes obtains, etc.

研究类型

观察性的

参与标准

研究人员寻找符合特定描述的人,称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。

资格标准

适合学习的年龄

18年 至 42年 (成人)

接受健康志愿者

不

取样方法

概率样本

研究人群

population of infertile women undergoing IVF/ICSI in the center of medical assistance for the procreation of the french hospital of Nantes between september 2010 and may 2011.

描述

Inclusion Criteria:

  • Patients undergoing IVF/ICSI in the center of medical assistance for the procreation of the french hospital of Nantes between september 2010 and may 2011.

Exclusion Criteria:

  • Women for who the cycle was interrupted during ovarian stimulation or converted in intrauterine insemination.

学习计划

本节提供研究计划的详细信息,包括研究的设计方式和研究的衡量标准。

研究是如何设计的?

设计细节

队列和干预

团体/队列
干预/治疗
Normal
Women with sufficient vitamin D level, when 25(OH)D >20 ng/ml
Serum samples to estimate vitamin D status were collected on the sixth day of stimulation
Deficient
women deficiency vitamin D level, when 25(OH)D <20 ng/ml
Serum samples to estimate vitamin D status were collected on the sixth day of stimulation

研究衡量的是什么?

主要结果指标

结果测量
措施说明
大体时间
Laboratory pregnancy
大体时间:4 weeks to 9 month
Serum HCG was drawn 16 days after ovocyte tapping; Patient had a repeat bHCG drawn 48 hours if they have a positive result from the first bHCG; Clinical pregnancy was defined as ultrasound documentation of fetal heart tones at seven weeks of gestation
4 weeks to 9 month
Clinical pregnancy
大体时间:4 weeks to 9 month
Serum HCG was drawn 16 days after ovocyte tapping; Patient had a repeat bHCG drawn 48 hours if they have a positive result from the first bHCG; Clinical pregnancy was defined as ultrasound documentation of fetal heart tones at seven weeks of gestation
4 weeks to 9 month
Live birth
大体时间:4 weeks to 9 month
Serum HCG was drawn 16 days after ovocyte tapping; Patient had a repeat bHCG drawn 48 hours if they have a positive result from the first bHCG; Clinical pregnancy was defined as ultrasound documentation of fetal heart tones at seven weeks of gestation
4 weeks to 9 month

次要结果测量

结果测量
措施说明
大体时间
The relationship between serum vitamin D levels and the ovarian reserve marker AMH
大体时间:day 3
Serum AMH was drawn during hormonal examination on third day of natural cycle.
day 3

合作者和调查者

在这里您可以找到参与这项研究的人员和组织。

调查人员

  • 首席研究员:Sophie DUBOURDIEU, Dr、Nantes university hospital

出版物和有用的链接

负责输入研究信息的人员自愿提供这些出版物。这些可能与研究有关。

一般刊物

研究记录日期

这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查,以确保它们在发布到公共网站之前符合特定的质量控制标准。

研究主要日期

学习开始 (实际的)

2016年1月1日

初级完成 (实际的)

2016年1月1日

研究完成 (实际的)

2016年1月1日

研究注册日期

首次提交

2016年5月9日

首先提交符合 QC 标准的

2021年9月8日

首次发布 (实际的)

2021年9月17日

研究记录更新

最后更新发布 (实际的)

2026年6月24日

上次提交的符合 QC 标准的更新

2026年6月23日

最后验证

2021年9月1日

更多信息

此信息直接从 clinicaltrials.gov 网站检索,没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求,请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改,我们的网站上也会自动更新.

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