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Parathyroid hormone-related protein (PTHrP) has been implicated in many processes during normal and pathological pregnancies. In the human fetal membranes, PTHrP exhibits cytokine-like actions. We have recently shown that inhibitors of the nuclear factor-kappa B (NF-κB) and activators of the peroxisome proliferator-activated receptor (PPAR)-γ signalling pathways down-regulate cytokine release from...
Parathyroid hormone-related protein (PTHrP) has important roles in fetal growth and development through stimulation of placental calcium transport, vasodilatation of the uteroplacental vasculature and regulation of cellular growth and differentiation. The growth restricted spontaneously hypertensive rat (SHR) has reduced fetal plasma, placental and amniotic fluid PTHrP concentrations compared to its...
Intrauterine parathyroid hormone-related protein (PTHrP) concentrations are reduced in association with growth restriction in the spontaneously hypertensive rat (SHR) compared to those of its normotensive control, the Wistar Kyoto (WKY) rat, implicating PTHrP as a pivotal fetal growth factor. The aim of this study was to examine, by embryo cross-transplanation between SHR and WKY, whether the mother,...
Maternal hypertension, vasoconstriction and placental insufficiency are features of pre-eclampsia. Alterations in calcium homeostasis and in the production of calciotropic hormones and vasoactive agents have also been described in association with pre-eclampsia. Parathyroid hormone-related protein (PTHrP) is abundantly expressed in intrauterine tissues during normal pregnancy and has roles in fetal...
Skeletal growth is the net product of coordinated bone formation and resorption. Insulin is known to stimulate bone formation by actions on osteoblasts. It is not known whether insulin receptors are present on osteoclasts, or whether insulin regulates osteoclastic function. We present here immunocytochemical evidence of insulin receptor expression by mature mono- and multinucleated murine osteoclast-like...
The aim of this study was to examine the vasodilatory effects of parathyroid hormone-related protein (PTHrP) (1–34) and parathyroid hormone (PTH) (1–34) on the human fetal-placental circulation utilising an in vitro placental perfusion model. In all experiments, the vasculature of an isolated human placental cotyledon was pre-constricted with the throm☐ane A 2 mimetic U46619. A single dose...
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