Noradrenaline, but Not Neuropeptide Y, Is Elevated in Cerebrospinal Fluid from the Third Cerebral Ventricle following Audiovisual Stress in Gonadectomised Rams and Ewes

2002 ◽  
Vol 76 (6) ◽  
pp. 373-380 ◽  
Author(s):  
Anne I. Turner ◽  
Elizabeth T.A. Rivalland ◽  
Iain J. Clarke ◽  
Gavin W. Lambert ◽  
Margaret J. Morris ◽  
...  
Keyword(s):  
Cerebrospinal Fluid ◽  
Neuropeptide Y ◽  
Cerebral Ventricle ◽  
The Third

Correlation between spontaneous feeding behavior and neuropeptide Y profile in the third ventricular cerebrospinal fluid of goats

2003 ◽  
Vol 25 (2) ◽  
pp. 175-182 ◽  
Author(s):  
K. Mogi ◽  
T. Yonezawa ◽  
D.-S. Chen ◽  
J.-Y. Li ◽  
T. Sawasaki ◽  
...  
Keyword(s):  
Cerebrospinal Fluid ◽  
Neuropeptide Y ◽  
Feeding Behavior ◽  
The Third

Independent osmoregulatory control of central and systemic angiotensin II concentrations in dogs

1986 ◽  
Vol 250 (5) ◽  
pp. R918-R925 ◽  
Author(s):  
C. Simon-Oppermann ◽  
D. A. Gray ◽  
E. Simon
Keyword(s):  
Cerebrospinal Fluid ◽  
Angiotensin Ii ◽  
Anterior Part ◽  
Conscious Dogs ◽  
Cerebral Ventricle ◽  
Ang Ii ◽  
Salt Loading ◽  
The Third ◽  
Rich Food ◽  
Conscious Animals

In 14 dogs angiotensin (ANG II)-like immunoreactivity was analyzed in simultaneously collected samples of cerebrospinal fluid (CSF) from the anterior part of the third cerebral ventricle and of plasma. Plasma and CSF ANG II were not different in euhydrated conscious dogs (29.3 +/- 2.7 and 30.8 +/- 2.8 pg X ml-1, means +/- SE). During anesthesia CSF ANG II was not significantly altered, but plasma ANG II was more than doubled in comparison with conscious animals. In conscious dogs 24 h of dehydration with sodium-rich food significantly increased ANG II concentration in the plasma (to 59.8 +/- 16.5 pg X ml-1) and CSF (to 71.8 +/- 20.1 pg X ml-1). Subsequent rehydration by drinking caused no consistent changes in plasma ANG II within 90 min but reduced CSF ANG II significantly. Salt loading by infusion of 5% saline in seven conscious dogs produced a small but consistent decrease in plasma ANG II by 20%, on average, whereas CSF ANG II rose in five animals. The directions of changes in concentration of central ANG II compared with plasma ANG II suggest that central endogenous ANG II may function as a central osmoregulatory mediator independent from systemic ANG II.

Mixing and Modes of Mass Transfer in the Third Cerebral Ventricle: A Computational Analysis

2007 ◽  
Vol 129 (5) ◽  
pp. 695-702 ◽  
Author(s):  
Vartan Kurtcuoglu ◽  
Michaela Soellinger ◽  
Paul Summers ◽  
Dimos Poulikakos ◽  
Peter Boesiger
Keyword(s):  
Cerebrospinal Fluid ◽  
Pituitary Gland ◽  
Third Ventricle ◽  
Cerebral Ventricle ◽  
Dynamics Model ◽  
Male Adult ◽  
The Third ◽  
Brain Motion ◽  
Mri Scans ◽  
Motion Mri

Anatomic, velocimetric, and brain motion MRI scans were combined with a computational fluid dynamics model to investigate cerebrospinal fluid (CSF) mixing in the third cerebral ventricle of a healthy male adult. It was found that advection dominates over diffusion in most of the third ventricle. Three zones where diffusion plays an important role in the mixing process were identified. One of these zones, consisting of recessus infundibulus, recessus opticus and the adjacent regions up to commissura anterior, is likely to exist in the general population. We hypothesize that this zone may act as a buffer to flatten concentration peaks of pituitary gland hormones released into the CSF of the third ventricle. We further hypothesize that this zone may facilitate the communication between hypothalamus and the pituitary gland through the third ventricle cerebrospinal fluid by prolonging residence times of the communicated hormones.

scholarly journals PSII-30 Effects of Prenatal and Postnatal Nutrition on the Concentration of Neuropeptide Y in the Third Ventricle Cerebrospinal Fluid in Beef Heifers

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 379-380
Author(s):  
Sarah M West ◽  
Meaghan M O’Neil ◽  
Tatiane S Maia ◽  
Sterling H Fahey ◽  
Gary L Williams ◽  
...  
Keyword(s):  
Cerebrospinal Fluid ◽  
Neuropeptide Y ◽  
Third Ventricle ◽  
Recovery Period ◽  
Adult Life ◽  
Postnatal Life ◽  
Beef Heifers ◽  
Third Trimester ◽  
Juvenile Period ◽  
The Third

Abstract Nutrition during gestation and early postnatal life can program developmental changes within the reproductive neuroendocrine system that persist until adult life. Here we tested the hypotheses that maternal nutrition during the second and third trimester of gestation and dietary energy intake during the juvenile period interact to affect concentrations of neuropeptide Y (NPY) in the third ventricle cerebrospinal fluid (CSF) after fasting (basal) and in response to peripheral leptin administration in heifer offspring. Bos indicus-influenced beef heifers were developed using a 3 × 2 factorial arrangement of pre- and postnatal dietary treatments. Beginning at the onset of the second trimester of gestation, pregnant Braford and Brangus cows were fed to reach body condition scores of 7.5–8 (H, obese), 5–5.5 (M, moderate), or 3–3.5 (L; very thin) during the third trimester. Heifer offspring were weaned at ~3.5 mo of age and fed to gain at either a relatively high (H; 1 kg/d) or low (L, 0.5 kg/d) rate between 4–8 mo of age, then fed a common diet subsequently. A subgroup of pubertal heifers (n = 6/group) representing 3 of the maternal × postnatal groups (HH, MH, and LL) were ovariectomized and received estradiol replacement after puberty. Cannulas were placed surgically in the third ventricle. After at least a 2-wk recovery period, heifers were fasted for 54 h and CSF was collected every 30 min for 5.5 h, including a 30-min basal and 5-h treatment period involving 3 hourly IV injections of recombinant oleptin (0.2 µg/kg BW). Basal and post-leptin NPY concentrations in the CSF did not differ (P > 0.10) among LL, MH, and HH heifers. Treatment with leptin had no effect (P > 0.10) on NPY concentration in any group. Therefore, neither the interaction of pre- and postnatal nutrition nor exogenous leptin affected third ventricle NPY tone in this experimental model.

Low cerebrospinal fluid neuropeptide Y concentrations in posttraumatic stress disorder

2009 ◽  
Author(s):  
R. Sah ◽  
N. N. Ekhator ◽  
J. R. Strawn ◽  
F. R. Sallee ◽  
D. G. Baker ◽  
...  
Keyword(s):  
Posttraumatic Stress Disorder ◽  
Cerebrospinal Fluid ◽  
Neuropeptide Y ◽  
Posttraumatic Stress ◽  
Stress Disorder

scholarly journals Metabolic, gastrointestinal, and CNS neuropeptide effects of brain leptin administration in the rat

1999 ◽  
Vol 276 (5) ◽  
pp. R1425-R1433 ◽  
Author(s):  
Gertjan van Dijk ◽  
Randy J. Seeley ◽  
Todd E. Thiele ◽  
Mark I. Friedman ◽  
Hong Ji ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Body Weight ◽  
Energy Expenditure ◽  
Neuropeptide Y ◽  
Caloric Restriction ◽  
Resting Energy Expenditure ◽  
Corticotropin Releasing Hormone ◽  
Plasma Fatty Acids ◽  
The Third ◽  
Ad Libitum

To investigate whether brain leptin involves neuropeptidergic pathways influencing ingestion, metabolism, and gastrointestinal functioning, leptin (3.5 μg) was infused daily into the third cerebral ventricular of rats for 3 days. To distinguish between direct leptin effects and those secondary to leptin-induced anorexia, we studied vehicle-infused rats with food available ad libitum and those that were pair-fed to leptin-treated animals. Although body weight was comparably reduced (−8%) and plasma glycerol was comparably increased (142 and 17%, respectively) in leptin-treated and pair-fed animals relative to controls, increases in plasma fatty acids and ketones were only detected (132 and 234%, respectively) in pair-fed rats. Resting energy expenditure (−15%) and gastrointestinal fill (−50%) were reduced by pair-feeding relative to the ad libitum group, but they were not reduced by leptin treatment. Relative to controls, leptin increased hypothalamic mRNA for corticotropin-releasing hormone (CRH; 61%) and for proopiomelanocortin (POMC; 31%) but did not reduce mRNA for neuropeptide Y. These results suggest that CNS leptin prevents metabolic/gastrointestinal responses to caloric restriction by activating hypothalamic CRH- and POMC-containing pathways and raise the possibility that these peripheral responses to CNS leptin administration contribute to leptin’s anorexigenic action.

Cerebrospinal fluid rhinorrhea and acquired anterior basal encephalocoele in a patient with colloid cyst of the third ventricle

2010 ◽  
Vol 58 (1) ◽  
pp. 156 ◽  
Author(s):  
Chandrasekharan Kesavadas ◽  
TirurRaman Kapilamoorthy ◽  
Gireesh Menon ◽  
KythasandraShivakumar Deepak
Keyword(s):  
Cerebrospinal Fluid ◽  
Third Ventricle ◽  
Colloid Cyst ◽  
Cerebrospinal Fluid Rhinorrhea ◽  
The Third
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