نتایج جستجو برای: fetal development

تعداد نتایج: 1486225  

Journal: :Biochemical Society transactions 1999
M H Oliver F H Bloomfield J E Harding B H Breier N S Bassett P D Gluckman

Both the maternal and fetal somatotrophic axes are closely linked to fetal substrate supply. Nutritional insults at critical stages of fetal development may lead to permanent reprogramming of the relationships between these factors. The consequences of reprogramming during fetal life may be harmful to metabolic, endocrine and cardiovascular homoeostatic mechanisms in postnatal life. The exact m...

2011
Qiaozhi Wei Brian G. Condie

BACKGROUND Thymic epithelial cells (TECs) are necessary for normal T cell development. Currently, one transcription factor, Foxn1 is known to be necessary for the progression of fetal TEC differentiation. However, some aspects of fetal TEC differentiation occur in Foxn1 mutants, suggesting the existence of additional transcriptional regulators of TEC differentiation. The goal of this study was ...

Journal: :Journal of animal science 1982
R T Stone R K Christenson

The within-litter relationship of fetal weight to fetal serum albumin and alpha-fetoprotein (AFP) was investigated at d 30 to 40, 45 to 50, 50 to 60, 75 to 85 and 90 to 105 of gestation in swine. Regression equations were calculated on individual litters and regression coefficients pooled across litters within each gestational age group. Coefficients for the regression of albumin on fetal weigh...

2008
Adam MATONIA Janusz JEZEWSKI Tomasz KUPKA Krzysztof HOROBA Marek BERNYS

Recording and analysis of fetal heart rate variability is still the most common method for detection of early symptoms of fetal hypoxia. However, fetal heart rate obtained via ultrasound describes only mechanical activity of fetus heart. Limitations of this technique have stimulated the development of fetal electrocardiography. It ensures more precise determination of fetal heart rate and, whic...

2002
Helena Maria Lizardo-Daudt Maria Isabel Albano Edelweiss Fernanda Teixeira dos Santos Rita de Cassia Alves Schumacher

unitermos abstract Background and aims: The diagnosis of human fetal age is usually estimated based on the measurement of crown-rump length or crown-heel length and the weight of the fetus. However, this estimate is not totally accurate and sometimes is necessary to combine other data to determine the fetal age. An analysis of the normal embryological development of the kidney may assist in thi...

  The course of human development during intrauterine life, particularly during embryonic development is extremely complex. A huge number of biochemical, physical and organizational processes must be precisely coordinated to assure normal development. Many of these events are very critical due to their irreversible nature and their short duration besides, they may be sensitive to a lot of terat...

2011
Marybeth Grant-Beuttler Laura M. Glynn Amy L. Salisbury Elysia Poggi Davis Carol Holliday Curt A. Sandman

BACKGROUND Ultrasound observation of fetal movement has documented general trends in motor development and fetal age when motor response to stimulation is observed. Evaluation of fetal movement quality, in addition to specific motor activity, may improve documentation of motor development and highlight specific motor responses to stimulation. AIM The aim of this investigation was to assess fe...

Journal: :American journal of physiology. Lung cellular and molecular physiology 2006
C E Filby S B Hooper F Sozo V A Zahra S J Flecknoe M J Wallace

The degree of fetal lung expansion is a critical determinant of fetal lung growth and alveolar epithelial cell (AEC) differentiation, although the mechanisms involved are unknown. As VDUP1 (vitamin D3-upregulated protein 1) can modulate cell proliferation, can induce cell differentiation, and is highly expressed in the lung, we have investigated the effects of fetal lung expansion on VDUP1 expr...

2010
C. Kuehn P. Widmann R. Pfuhl R. Weikard X. Yan Y. Huang M. J. Zhu N. M. Long A. B. Uthlaut R. J. McCormick S. P. Ford P. W. Nathanielsz

J. Anim. Sci. Vol. 88, E-Suppl. 2/J. Dairy Sci. Vol. 93, E-Suppl. 1/Poult. Sci. Vol. 89, E-Suppl. 1 635 Evaluation of the NCAPG I442M locus, a major gene for bovine prenatal growth, for effects on postnatal development compared to a disruptive mutation in the myostatin encoding gene GDF8. C. Kuehn*, P. Widmann, R. Pfuhl, and R. Weikard, Leibniz Institute for Farm Animal Biology (FBN), Dummersto...

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