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Showing 1 to 12 of 12 for “"Prolactin levels"”.
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Prolactin Levels in Adult Rats Following Equivalent Exposure to Either the Open Field or Restraint and the Open Field
<p>Prolactin is a reliable measure of both physical and psychological stress in rats. In addition, stress can be quantified by activity, with rats showing increased activity under many stressful conditions. In the present study, rats were (1) exposed to an open-field for 10 min, followed by …
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The effects of incubation manipulation on prolactin secretion in Adélie penguins (Pygoscelis adeliae)
… correlate the secretion of the peptide hormone prolactin to parental behavior, the pattern of secretion of prolactin varies widely across species. These differences correlate with the type and amount of care that is given, the mode of development of the young, and the environment in which the …
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Progesterone and Prolactin Profiles of the Female Asian Elephant (Elephas Maximus)
Serum progesterone and prolactin concentrations were determined daily (around estrus), weekly (throughout the estrous cycle), and bimonthly (during gestation) in 8 female Asian elephants. A total of 18 estrous cycles with 4 resulting in conception are described. Early gestational values are shown …
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Η ΣΥΜΠΕΡΙΦΟΡΑ ΤΗΣ ΓΑΣΤΡΙΝΗΣ ΤΗΣ ΙΝΣΟΥΛΙΝΗΣ ΚΑΙ ΤΟΥ C-ΠΕΠΤΙΔΙΟΥ ΤΟΥ ΟΡΟΥ ΚΑΤΑ ΤΗΔΙΑΡΚΕΙΑ ΤΗΣ ΕΓΚΥΜΟΣΥΝΗΣ ΚΑΙ ΤΗΣ ΛΟΧΕΙΑΣ ΣΕ ΘΗΛΑΖΟΥΣΕΣ ΚΑΙ ΜΗ ΘΗΛΑΖΟΥΣΕΣ ΜΗΤΕΡΕΣ
BLOOD LASTING GASTRIN LEVELS MARKEDLY INCREASE DURING PREGNANCY, AND REMAIN HIGH DURING LACTATION. IN NON LACTATING WOMEN THE GASTRIN LEVELS RETURN RAPIDLY TO NORMAL. INSULIN LEVELS PROGRESSIVELY INCREASE DURING PREGNANCY DURING PUERPERIUM THE INSULIN LEVELS SLOWLY RETURN TO NORMAL. THERE ARE NO …
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Estrogen and Antiestrogen Action in the Medial Basal Hypothalamus and Pituitary: Dopamine-Prolactin Interrelationships (d-2 Receptors, Bromocriptine)
… and antiestrogens on dopamine turnover and prolactin levels were studied in the medial basal hypothalamus (MBH), anterior pituitary, and serum of immature female rats. Estradiol increased MBH dopamine levels and turnover and pituitary and serum prolactin concentrations in a time- and …
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Prolactinoma gigante: relato de caso
… the clinical case of an adolescent with a giant prolactinoma, diagnosed at the pediatric endocrinology service of a public university hospital in Salvador, Bahia. Case report: A 14-year-old male adolescent presented with progressively worsening headaches and blurred vision for 2 years, …
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Effects of body size on goose behavior: lesser snow goose and Ross's goose
… among geese, both at intra- and interspecific levels. Interspecific variation in several behaviors has been attributed to differences in body size in geese: incubation constancy, tendency to maintain family units, and time spent foraging. Body size has important physiological implications for …
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The Effects of Intracerebroventricular Leptin on Milk Availability in Lactating Rats
… the control groups, leptin treatment increased prolactin levels in the dams and increased milk transfer to pup. Hypothalamic mRNA leptin levels and brain size in the offspring from leptin treated dams were significantly higher than the control. These findings support the involvement of leptin in …
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A Morphological Study of Paracrine Interactions in the Anterior Pituitary of Lactating Rats Using Immunogold Techniques
<p>One major function of prolactin in the female is the stimulation of mammary gland development for lactation. It is well established in the rat that during periods of lactation, when serum prolactin levels are high, there is a suppression of the serum luteinizing hormone level. Prolactin has also …
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Prolactin signalling in murine hair growth
Although prolactin has been shown to entrain hair growth cycles in seasonally responsive mammals, no comparable role has been identified in the age-dependent pelage replacement of rodents. Prolactin binds to dimerised membrane-associated prolactin receptors (PRLR) on target organs and initiates …
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The clinical characteristics, presentation, and treatment outcomes of prolactinomas at Groote Schuur Hospital
Background: Prolactin-secreting tumours( prolactinomas) are the commonest type of pituitary tumour, accounting for approximately 30 to 40 %% of all pituitary adenomas. Although there is ample epidemiologic and clinic data from Industrialised countries there remains sparse data from Africa. …
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Late effects of treatment in survivors of childhood acute lymphoblastic leukaemia
… to thyrotropin releasing hormone. Normal prolactin levels in children showing other hormonal evidence of hypothalamic damage were thought to indicate the selectivity of damage caused by leukaemia treatment. Adrenal control and function were normal in leukaemia survivors. In the absence of …