Arginine vasotocin receptor binding in the hen uterus (shell gland) before and after oviposition

Takahashi, Tetsuya; Kawashima, Mitsuo; Kamiyoshi, Michiharu; Tanaka, Katuhide

doi:10.1530/eje.0.1300366

Cited by 29 publications

(23 citation statements)

References 30 publications

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“…It was also reported that the receptor for AVT exists in the uterus of hens (Takahashi et al, 1992), and the bindings changes during the oviposition cycle (Takahashi et al, 1994b). The concentration of the blood AVT dramatically increases just after oviposition, as is well known (Sturkie and Lin, 1966;Tanaka et al, 1984;Rice et al, 1985;Shimada et al, 1986;Takahashi et al, 1994b), and the AVT causes the contractions of the smooth muscle of the uterus (Munsick et al, 1960;Rzasa, 1972) for oviposition (Rzasa and Ewy, 1970). Although Nouwen et al (1984) and Koike et al (1988) measured MT concentrations in blood before and after oviposition in chickens, changes related to oviposition were not detected.…”

Section: Introductionmentioning

confidence: 95%

“…Nonlaying hens in which bindings for the uterine AVT receptor are stable during a 24-h period (Takahashi et al, 1994b) were used to examine the effect of MT on the AVT receptor. The oviduct uterus was obtained (4 birds in each group) from nonlaying hens 2, 5, and 10 min after a single intravenous injection of MT (1 μg/hen) or 0.05 M acetic acid vehicle (0.5 mL/hen).…”

Section: Measurement Of Binding Affinity and Capacity Of The Avt Recementioning

confidence: 99%

“…Recently, it was reported that the receptor for MT exists in the oviduct uterus of hens, and its bindings (binding affinity and capacity) change relating to oviposition (Takahashi and Kawashima, 2008). It was also reported that the receptor for AVT exists in the uterus of hens (Takahashi et al, 1992), and the bindings changes during the oviposition cycle (Takahashi et al, 1994b). The concentration of the blood AVT dramatically increases just after oviposition, as is well known (Sturkie and Lin, 1966;Tanaka et al, 1984;Rice et al, 1985;Shimada et al, 1986;Takahashi et al, 1994b), and the AVT causes the contractions of the smooth muscle of the uterus (Munsick et al, 1960;Rzasa, 1972) for oviposition (Rzasa and Ewy, 1970).…”

Section: Introductionmentioning

confidence: 99%

“…A few minutes later, the egg is transferred to the vagina and expelled outside the body by peristalsis of the vagina (Sykes, 1953). The binding affinity of the AVT receptor in the uterus increases during the restlessness behavior (Takahashi et al, 1994b). In contrast, the MT receptor binding affinity in the uterus was elucidated to increase before the increasing in the binding affinity of the AVT receptor (approximately 30 min before oviposition; Takahashi and Kawashima, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Mesotocin Increases the Sensitivity of the Hen Oviduct Uterus to Arginine Vasotocin

Takahashi

Kawashima

2008

Poultry Science

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The present study was performed to elucidate whether mesotocin (MT), one of avian neurohypophysial hormones, relates to the action of arginine vasotocin (AVT) on oviposition of hens. The ratio of AVT-induced oviposition was increased when 1 microg/hen of MT was injected together with AVT. An intravenous injection of 1 microg/hen of MT caused an increase in the binding affinity of the uterine AVT receptor and a decrease in the binding capacity. Blood MT concentrations measured by RIA increased approximately 1 min before oviposition during the period of the bearing-down behavior, but the AVT concentration did not change at this time. The blood AVT concentration dramatically increased within 1 min just after oviposition. The results suggest that MT may have an effect of enhancing the inducing oviposition by AVT through the increase in the sensitivity of the uterus to AVT at oviposition in hens.

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Section: Introductionmentioning

confidence: 95%

Section: Measurement Of Binding Affinity and Capacity Of The Avt Recementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mesotocin Increases the Sensitivity of the Hen Oviduct Uterus to Arginine Vasotocin

Takahashi

Kawashima

2008

Poultry Science

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“…In both uterine tissue and plasma, enzyme activity for inactivating AVT is lowest at expected oviposition time and then rises after a few hours Brzezinska et al, 1967;Brzezinska-Slebodzinska et al, 1979). In addition, ovarian hormones cause both the number of uterine AVT receptors and their binding characteristics to vary in such a way that AVT has its greatest effect on uterine motility at expected oviposition time (Takahashi et al, 1992(Takahashi et al, , 1994. Uterine PG receptors may show similar changes (Asboth et al, 1985).…”

Section: Stress-induced Oviposition Delaysmentioning

confidence: 99%

Stress-induced oviposition delays in laying hens: Duration and consequences for eggshell quality

Reynard¹,

Savory²

1999

British Poultry Science

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1. As part of a programme investigating the causation of pecking damage in fowls, this experiment tested a proposal that birds may receive more feather pecks when their plumage colour contrasts with floor litter colour, because litter particles on plumage (as a consequence of dustbathing) may then have greater stimulus value. 2. Groups consisting of 7 light- and 7 dark-coloured bantams were reared from 1 to 11 weeks of age in pens with either wood shavings (light coloured, n=6) or peat (dark coloured, n=6) floor litter. 3. Feather loss from pecking commenced in the 3rd week of life and increased thereafter, but observed pecking damage scores were not consistent with the hypothesis being tested. 4. Despite many more pecks at birds being seen (over 10 weeks) in the wood shavings groups' (661 at particles on plumage, 1795 not at particles) than in peat groups (205, 787), there was no effect of litter substrate on pecking damage. The only evidence supporting the proposal was the finding that, in groups on wood shavings, significantly more pecks at particles on plumage were directed from light coloured birds towards dark ones, than from light to light, dark to light, or dark to dark. 5. Feather eating was confirmed from the presence of feather material in 2% to 15% of faecal droppings collected from each group at 11 weeks, but these proportions were not correlated with pecking damage scores. 6. The results imply that only some feather pecks/pulls were damaging and only some eaten feathers were pulled from other birds.

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Female Reproductive System and Immunology

Yoshimura

Barua

2017

Advances in Experimental Medicine and Biology

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Health of the reproductive organs is essential for formation and production of high quality and hygienic eggs. It is of importance to review the structures and functions of female reproductive system for better understanding of the mechanism by which the eggs are formed. The unique functions of ovarian cells for follicular growth and differentiation as well as steroidogenesis and oocyte maturation are regulated by gonadotropins and gonadal steroids. The oviduct is responsible for egg formation, while the unique function to store sperms for a prolonged period takes place in the specific tissue of this organ. The unique innate and adaptive immuno-defense systems that play essential role to prevent infection are developed in the ovary and oviduct. Toll-like receptors (TLRs) that recognize the molecular pattern of microbes and initiate the immunoresponse are expressed in those organs. Avian β-defensins (AvBDs), a member of antimicrobial peptides, are synthesized by the ovarian and oviductal cells. Challenge of those cells by TLR ligands upregulates the expression of proinflammatory cytokines, which in turn stimulate the expression of AvBDs. The adaptive immune system in the ovary and oviduct is also unique, since the migration of lymphocytes is enhanced by estrogens. In contrast to the development of immuno-defense system, spontaneous ovarian cancer and uterine fibroids appear more frequently in chickens than in mammals, and thus chickens could be used as a model for studying these diseases. Thus the avian reproductive organs have unique functions not only for egg formation but also for the immuno-defense system, which is essential for prevention of infection and production of hygienic eggs.

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Arginine vasotocin receptor binding in the hen uterus (shell gland) before and after oviposition

Cited by 29 publications

References 30 publications

Mesotocin Increases the Sensitivity of the Hen Oviduct Uterus to Arginine Vasotocin

Mesotocin Increases the Sensitivity of the Hen Oviduct Uterus to Arginine Vasotocin

Stress-induced oviposition delays in laying hens: Duration and consequences for eggshell quality

Female Reproductive System and Immunology

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