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Thirty-two total knee arthroplasties (TKAs) in patellectomized patients were evaluated with recent clinical and radiographic examinations. Eighteen patients had a primary TKA with a mean follow-up period of 49 months, and 14 patients had a revision TKA with a mean follow-up period of 36 months. A control group of 13 TKA patients with intact patellae were(More)
Basal plasma concentrations of growth hormone (GH) were monitored in both normal and estradiol-primed male rats by the collection of sequential blood samples from freely moving rats, via chronic intraatrial cannulae. Blood was sampled every 2 min for a period of 80 min and plasma GH levels determined by radioimmunoassay. The normal male rats displayed a(More)
Extracellular single-unit recordings from neurons in the area postrema (AP) and the nucleus tractus solitarius (NTS) in anesthetized male rats demonstrated that most cells in these regions have spontaneous activities of 5 Hz or less. Systemic angiotensin (ANG II) (50-500 ng) enhanced the activity of 55% of AP cells tested (n = 76), whereas 53% of tested NTS(More)
Subpopulations of rat area postrema (AP) and nucleus tractus solitarius (NTS) neurons exist that are responsive to changes in blood pressure. The hypothesis that these effects may be mediated by afferent baroreceptor input was examined. Orthodromic responses of AP and NTS neurons to aortic depressor nerve (ADN) stimulation were observed. Sixty-three percent(More)
Neuroanatomical studies have demonstrated reciprocal connections between the parabrachial nucleus (PBN) and both the area postrema (AP) and the nucleus tractus solitarius (NTS). To functionally characterize these projections, antidromic identification of AP and NTS neurons projecting to the PBN was attempted. Orthodromic influences on these cells, resulting(More)
Previous studies have suggested the subfornical organ (SFO) to be the CNS site at which circulating angiotensin (ANG) acts to influence a variety of regulatory control mechanisms. We have utilised electrophysiological techniques: 1. to examine the neural connections through which the SFO exerts such control over hypothalamic regulatory control centres; 2.(More)
Subpopulations of neurons in the area postrema (AP) and commissural nucleus tractus solitarius (NTS) have been identified according to their responses to systemic angiotensin-II (ANG-II) and increases in blood pressure (BP). In order to further define the functional connections of these subpopulations of cells, electrophysiological single unit recording(More)
The release of prolactin is governed by both inhibiting and releasing factors. Basal plasma concentration of prolactin is controlled mainly through inhibition by a prolactin release-inhibiting factor (PIF), while acute stimulation of prolactin release is believed to be caused by a prolactin-releasing factor (PRF). It is the general consensus that PIF is(More)
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