The most significant ultrasound parameters indicating viability of the equine fetus include fetal heart rate and fetal activity. Abnormal patterns in fetal heart rate reactivity represent the most sensitive indicator of fetal compromise. In advanced to late gestation, the fetal cardiac area becomes quite inaccessible to an ultrasound examination per rectum. Peripheral arterial pulses may be use...

To better understand the potential use of fetal marrow stromal cells (MSCs) in bone tissue engineering, we compared the ability of these cells with those of adult MSCs with respect to osteoblasts differentiation in the presence or absence of glucocorticoids. Cells were grown for 3-4 weeks in basal medium or supplemented with 100 nM dexamethasone (DEX, a synthetic glucocorticoid analog) or with ...

mutations in any of four known nadph-oxidase components lead to cgd. x-linked cgd (x-cgd) is caused by defects in cybb, the gene that encodes gp91-phox. autosomal recessive (ar) cgd is caused by defects in the genes for p47 phox, p22-phox or p67-phox. the aim of this study was to screen the molecular defect in the fetus of an x-cgd carrier mother and postnatal confirmation of the results. in a ...

We have previously reported that anti-Müllerian hormone (AMH), also known as Müllerian-inhibiting substance, the testicular glycoprotein involved in regression of the Müllerian ducts of the male fetus, induces the formation of seminiferous cord-like structures in fetal ovaries exposed to it in organ culture. We have now investigated the effect of bovine AMH, purified to homogeneity, on ovarian ...

Nppa, encoding atrial natriuretic factor, is expressed in fetal atrial and ventricular myocardium and is downregulated in the ventricles after birth. During hypertrophy and heart failure, Nppa expression is reactivated in the ventricles and serves as a highly conserved marker of heart disease. The Nppa promoter has become a frequently used model to study mechanisms of cardiac gene regulation. N...

The cellular responses to hypoxia are poorly understood. To test the hypothesis that ornithine decarboxylase (ODC; L-ornithine carboxy-lyase; EC 4.1.1.17) activity and polyamine concentrations change in response to acute hypoxia, we performed the following studies. Pregnant Sprague-Dawley rats inspired various O2 concentrations (9-21%) for various time periods (0.5-48 h) from days 15 to 21 of g...