Participation of Neurohypophysial Hormone in Oviposition in the Hen

Tanaka, Katuhide; Nakajo, Seiichi

doi:10.1210/endo-70-4-453

Cited by 62 publications

(16 citation statements)

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“…Munsick et al (1960) has shown that the concentration of AVT in the fowl neurohypophysis is 10 times that of oxytocin and Tanaka and Nakajo (1960;1962) reported a decrease in the AVT content of the neurohypophysis which coincided with oviposition. Douglas and Sturkie (1964) and Lin (1966, 1967) measured AVT in the blood of laying hens and found that the activity of the hormone increased markedly during oviposition.…”

Section: Introductionmentioning

confidence: 98%

Changes in the plasma concentration of immunoreactive arginine vasotocin during oviposition in the domestic fowl

Tanaka¹,

Goto²,

Yoshioka³

et al. 1984

British Poultry Science

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The plasma concentrations of immunoreactive arginine vasotocin (AVT) were measured during oviposition and shortly before ovulation of the first egg (Cl) of a clutch. Immunoreactive AVT was determined on bentonite extracts of 0.5 ml plasma samples using the method of Rosenbloom and Fisher (1974). The R-70 antiserum used to measure AVT cross reacted with arginine vasopressin (AVP), however the fowl pituitary does not synthesise AVP. Over a period of 10 to 90 min before oviposition the plasma AVT concentration was about 20 pg/ml; during oviposition it increased four-fold. Measurements made at frequent intervals showed that plasma AVT concentration increased 5 to 6 min before oviposition, reached a peak during oviposition itself and decreased rapidly in the following 5 to 6 min. The surge in plasma AVT occurred on average 48 min before Cl ovulation.

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Section: Introductionmentioning

confidence: 98%

Changes in the plasma concentration of immunoreactive arginine vasotocin during oviposition in the domestic fowl

Tanaka¹,

Goto²,

Yoshioka³

et al. 1984

British Poultry Science

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“…A transient increase in plasma arginine vasotocin concentration occurs at the time of oviposition in laying hens (Sturkie & Lin, 1966;Niezgoda et al, 1973;Arad & Skadhauge, 1984;Nouwen et al, 1984;Tanaka et al, 1984;Shimada et al, 1986) concurrent with a reduction in the content of vasotocin-like substance in the neurohypophysis (Tanaka & Nakajo, 1962). The mechanism that causes the release of arginine vasotocin during oviposition is not clear.…”

Section: Introductionmentioning

confidence: 99%

Changes in plasma concentrations of arginine vasotocin after intrauterine injections of prostaglandin F-2 and acetylcholine at various times during the oviposition cycle of the domestic hen (Gallus domesticus)

et al. 1987

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Prostaglandin F-2 alpha (PGF-2 alpha, 1 microgram) and acetylcholine (10 mg) were injected into the uterus of chickens 23, 21, 16, 8 or 4 h before expected oviposition. Plasma concentrations of immunoreactive arginine vasotocin and PGF were measured in relation to the time of administration of PGF-2 alpha or acetylcholine or to the premature oviposition that was induced. PGF-2 alpha or acetylcholine administration caused premature oviposition and a marked increase in plasma arginine vasotocin levels only when an egg was present in the uterus. Changes in plasma PGF concentrations were not observed. After premature oviposition was induced, plasma values of PGF and arginine vasotocin increased at the expected time of oviposition. Manual stimulation of the uterus 4 h after oviposition also stimulated arginine vasotocin release. During spontaneous oviposition, a rise in plasma PGF concentration preceded increases in uterine contractility and plasma arginine vasotocin concentration. These results suggest that PGF may stimulate uterine contractility which in turn causes the release of arginine vasotocin to provide an additional contractile stimulus during oviposition.

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“…Table 1 shows that when chicken or toad plasma was incubated with arginine vasotocin for up to three hr at 42.50 or 26.50 C, no inactivation of the hormone could be demonstrated. (Munsick, Sawyer & van Dyke, 1960;Tanako & Nakajo, 1962;Gilbert & Lake, 1963) and has also been shown (Heller, Ferreri & Leathers, 1967) to affect the amphibian oviduct, it seemed worth while to investigate the fate of this hormone in both sexes. Table 2, however, shows that the half-lives of both arginine vasotocin and oxytocin were very similar in male and female birds or toads.…”

Section: Assay Ofpressor Activitymentioning

confidence: 98%

The Clearance of Neurohypophysial Hormones From the Circulation of Non‐mammalian Vertebrates

Hasan

Heller

1968

British Journal of Pharmacology and Chemotherapy

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METHODSHens and cockerels (White Leghorns and Rhode Islands obtained commercially), weighing from 1.0 to 2.0 kg, were used. The birds were anaesthetized with pentobarbitone sodium (55 mg/kg) and received heparin 1,000 u./kg. Intravenous injections were given into the brachial vein and the blood samples were collected from a common carotid artery. Bufo marinus of either sex, weighing 150-300 g, obtained from the West Indies were used. Anaesthesia was produced by immersing the toads in a 0.2% solution of MS222 (Sandoz). Intravenous injections were given into the femoral vein and the blood samples were collected from the carotid arch after heparin (1,000 u./kg) had been administered. Adult albino rats of both sexes, weighing from 150 to 200 g were used for assays. Assay of antidiuretic activityThe original technique of Jeffers, Livezey & Austin (1942) was employed with slight modifications. The rats were fasted overnight but were allowed to drink water. On the day of the assay warm tap water 50 ml./kg body weight was given by stomach tube and 45 min later the same volume of 12% ethanol by the same route. If the depth of anaesthesia produced by ethanol was not adequate for surgical operations, 3 mg of pentobarbitone sodium was administered intraperitoneally. As soon as surgical anaesthesia had been obtained a jugular vein was cannulated, as were the stomach and the urinary bladder, and the penile urethra was ligatured. Tracheotomy was also performed to ensure a free airway. The rat was then laid on its back

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Participation of Neurohypophysial Hormone in Oviposition in the Hen

Cited by 62 publications

References 0 publications

Changes in the plasma concentration of immunoreactive arginine vasotocin during oviposition in the domestic fowl

Changes in the plasma concentration of immunoreactive arginine vasotocin during oviposition in the domestic fowl

Changes in plasma concentrations of arginine vasotocin after intrauterine injections of prostaglandin F-2 and acetylcholine at various times during the oviposition cycle of the domestic hen (Gallus domesticus)

The Clearance of Neurohypophysial Hormones From the Circulation of Non‐mammalian Vertebrates

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