Results 151 to 160 of about 6,402,628 (197)
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The Area Postrema and Vomiting
Frontiers in Neuroendocrinology, 1994The area postrema (AP) has been implicated as a chemoreceptor trigger zone for vomiting (emesis) for over 40 years. The AP is located on the dorsal surface of the medulla oblongata at the caudal end of the fourth ventricle. It is one of the so-called circumventricular organs that serve as an interface between the brain parenchyma and the cerebrospinal ...
A D, Miller, R A, Leslie
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Ablation of the area postrema and emesis
Metabolic Brain Disease, 1989The emetic action of dopamine, norepinephrine, epinephrine, nicotine, dimethylphenyl-piperazinium (DMPP), and 4-m-chlorophenylcarbamoyloxy-2-butynyltrimethylammonium (McN-A-343) injected intracerebroventricularly (i.c.v.) to the unanesthetized cat was investigated and compared.
D, Jovanović-Mićić +5 more
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The microcirculation of the area postrema in the rat
Journal of Comparative Neurology, 1968AbstractThe validity of current theories concerning the function of the area postrema ultimately rests on the nature of its microcirculation. Therefore a detailed study of the vasculature of the postremal region was undertaken in the rat.The findings indicate a singular arteriolar supply from branches of the posterior inferior cerebellar arteries ...
G I, Roth, W S, Yamamoto
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Brain tumors and the area postrema
Journal of Clinical Neuroscience, 2013Brain tumors can rarely present with symptoms mistaken for anorexia nervosa. We report a patient with a long-standing history of anorexia who developed headaches and was found on brain MRI to have a brain tumor in the area of the fourth ventricle. On admission, the patient presented with a 4 month history of headaches and a 10 year history of "anorexia
Isaac J, Abecassis +2 more
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Ultrastructure of the feline area postrema
Journal of Comparative Neurology, 1977AbstractThe morphology of the feline area postrema (AP), a circumventricular organ, has been studied by scanning (SEM) and transmission electron microscopy (TEM). In SEM preparations the boundary of the AP was sharply delineated by the absence of kinocilia.
P M, Klara, K R, Brizzee
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The connectivity of the area postrema in the ferret
Brain Research Bulletin, 1994The area postrema (AP) is the chemosensitive trigger zone for the emetic reflex. We have investigated the connectivity of the AP and adjacent solitary complex (SC) to identify possible sites of the motor emetic center. The AP and SC were infused with HRP or WGA-HRP in 30 ferrets that were perfused transcardially after 24-72 h.
N L, Strominger +2 more
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Area postrema and cardiovascular regulation in rats
American Journal of Physiology-Heart and Circulatory Physiology, 1988The area postrema (AP) of the dog mediates pressor responses to angiotensin II and plays a role in the maintenance of normal arterial pressure. Ablation of the AP (APX) in the rat has been reported to have little or no effect on cardiovascular regulation. In the present study, computer data acquisition techniques were used to investigate this question.
K M, Skoog, M L, Mangiapane
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A morphological characterization of the canine area postrema
Neuroscience Letters, 1980The cellular morphology of the dog's area postrema (AP) was demonstrated with the Golgi-Cox technique. Golgi preparations suggested division of the canine AP into three regions: a periventricular mantle zone, a central region, and a junctional zone adjacent to the nucleus tractus solitarii.
C L, Chernicky +3 more
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Prolactin receptor localization to the area postrema
Brain Research, 1999The area postrema, which lacks a blood-brain barrier, was examined for the presence of prolactin receptors, which would render it a potential site for vascular prolactin to directly interact with neuronal elements. Using an in vitro autoradiographic technique, frozen sections of New Zealand white rabbit medulla were incubated with radiolabelled ovine ...
L P, Mangurian, A R, Jurjus, R J, Walsh
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The area postrema and the hypertensive effect of angiotensin
Metabolic Brain Disease, 1989The intracerebroventricular administration of angiotensin II in pentobarbital-anesthetized cats produced dose-dependent increases in the arterial blood pressure without significant changes in the heart rate. The ablation of the area postrema significantly reduced, but did not abolish, the pressor effect of angiotensin injected into the cerebral ...
S, Veljković +4 more
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