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In this study, we examined the effect of passive immunization of endogenous corticotropin-releasing factor (CRF) and arginine vasopressin (AVP) on hypoglycemia-induced adrenocorticotropic hormone (ACTH) secretion and determined proopiomelanocortin messenger RNA (POMC mRNA) levels in the anterior pituitary as well as hypothalamic CRF mRNA levels in(More)
The tumor suppressor gene patched (ptc) encodes an approximately 140 kDa polytopic transmembrane protein [1-3] [corrected] that binds members of the Hedgehog (Hh) family of signaling proteins [4-6] [corrected] and regulates the activity of Smoothened (Smo), a G protein-coupled receptor-like protein essential for Hh signal transduction [7-9] [corrected]. Ptc(More)
Hedgehog (Hh) signalling plays a central role in many developmental processes in both vertebrates and invertebrates [1]. The multipass membrane-spanning proteins Patched (Ptc) [2-4] and Smoothened (Smo) [5-7] have been proposed to act as subunits of a putative Hh receptor complex. According to this view, Smo functions as the transducing subunit, the(More)
Neuropeptide Y (NPY) has a stimulatory effect on adrenocorticotropin (ACTH) and corticotropin-releasing factor (CRF) release. In the present study, to investigate the effect of NPY on CRF synthesis, the effect of centrally administered NPY on CRF messenger RNA (mRNA) levels in rat hypothalamus was examined under pentobarbital anesthesia. The administration(More)
An obstacle to understanding motor pathologies of the gastrointestinal (GI) tract is that the physiology of some of the cellular components of the gut wall is not understood. Morphologists identified fibroblast-like cells in the tunica muscularis many years ago, but little is known about these interstitial cells because of inadequate techniques to identify(More)
The zinc finger protein glioma-associated oncogene homologue 1 (Gli-1) is a critical component of the Hedgehog (Hh) signalling pathway, which is essential for morphogenesis and stem-cell renewal, and is dysregulated in many cancer types. As data were not available on the role of Gli-1 expression in oesophageal cancer progression, we analysed whether it(More)
Angiotensin II (AII) has an important role in the regulation of CRF release. In the present study, the effect of centrally administered AII on CRF messenger RNA (mRNA) levels in the rat hypothalamus was examined. Administration of 0.1 nmol and 1 nmol AII into the lateral ventricle increased the levels of plasma ACTH 20 min and 45 min after administration(More)
Oscillatory rises in intracellular Ca2+ concentration ([Ca2+]i) are the pivotal signal in the fertilization of mammalian eggs. The spatiotemporal dynamics of [Ca2+]i rises in mouse eggs subjected to intracytoplasmic sperm injection (ICSI) were analysed by Ca2+ imaging and compared with those subjected to in-vitro fertilization (IVF). The first Ca2+(More)
Human plasma contains at least three forms of adiponectin: a trimer, a hexamer, and a high-molecular-weight (HMW) multimer. We purified HMW adiponectin from human plasma using its affinity to gelatin and obtained monoclonal antibodies against it. On Western blot analysis, the reactivity of these monoclonal antibodies was shown to be restricted to a(More)
Endogenous opioid peptides have a role in the regulation of the hypothalamic-pituitary-adrenal axis. Recently, beta-endorphin (EP) has been thought to inhibit CRF release in vivo and in vitro. In the present study we examined the effects of central administration of EP on ACTH secretion and gene expression of both CRF in the hypothalamus and POMC in the(More)