Výsledky vyhledávání - "R. J. Scaramuzzi"

Control of antral follicle development and selection in sheep and cattle

Autor: Robert Webb, R J Scaramuzzi, Bruce K. Campbell

Publikováno v: Bioscientifica Proceedings.

The development of antral follicles in sheep and cattle is dependent on FSH, but large antral follicles can shift their gonadotrophic dependence from FSH to LH. The mechanisms that result in the selection of at least one ovulatory follicle from ident

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8af2ceb023f36fc1879df918cd0e30f9
https://doi.org/10.1530/biosciprocs.3.026

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An in vitro investigation of the actions of reproductive hormones on the cervix of the ewe in the follicular stage: The effects of 17β-estradiol, oxytocin, FSH, and arachidonic acid on the cervical pathway for the synthesis of prostaglandin E2

Autor: R J Scaramuzzi, Laura Falchi

Publikováno v: Theriogenology. 83:1007-1014

During the periovulatory period, the cervix of the ewe relaxes and this mechanism is thought to be mediated by oxytocin and prostaglandin E 2 (PGE 2 ) in response to increased concentrations of 17β-estradiol and perhaps FSH. The aim of the study was

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78e08970fb447c1ba5a3a0d815e539b1
https://doi.org/10.1016/j.theriogenology.2014.12.003

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The pattern of LH secretion and the ovarian response to the 'ram effect' in the anoestrous ewe is influenced by body condition but not by short-term nutritional supplementation

Autor: J. Cognié, A. Piezel, Hannah M. Brown, L. Oujagir, C. Fabre Nys, R. J. Scaramuzzi, J. B. Menassol, S. Freret

Publikováno v: Reproduction, Fertility and Development
Reproduction, Fertility and Development, CSIRO Publishing, 2014, 26 (8), pp.1154-1165. ⟨10.1071/RD13139⟩

Remerciements : Laboratoire Phénotypage - Endocrinologie INRA, UMR Physiologie de la Reproduction et des Comportements, Centre Val de Loire; In sheep, the ‘ram effect’ induces out-of-season fertility and good nutrition increases prolificacy. Thi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a780082b545299b6be854607f1d70344
https://hal.archives-ouvertes.fr/hal-01129775

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Short oestrous cycles in sheep during anoestrus involve defects in progesterone biosynthesis and luteal neovascularisation

Autor: C. Fabre Nys, Hannah M. Brown, R. J. Scaramuzzi, Juliette Cognie

Publikováno v: Reproduction
Reproduction, BioScientifica, 2014, 147 (3), pp.357-367. ⟨10.1530/REP-13-0400⟩

Anoestrous ewes can be induced to ovulate by the socio-sexual, ‘ram effect’. However, in some ewes, the induced ovulation is followed by an abnormally short luteal phase causing a so-called ‘short cycle’. The defect responsible for this lutea

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aaecf82bedf8a8b2c6facee20c41d266
https://hal.archives-ouvertes.fr/hal-01129791

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The effect of nutrition and metabolic status on the development of follicles, oocytes and embryos in ruminants

Autor: Maxime Reverchon, R. J. Scaramuzzi, Joëlle Dupont

Publikováno v: animal
animal, Cambridge University Press (CUP), 2014, 8 (7), pp.1031-1044. ⟨10.1017/S1751731114000937⟩
Animal
Animal, Published by Elsevier (since 2021) / Cambridge University Press (until 2020), 2014, 8 (7), pp.1031-1044. ⟨10.1017/S1751731114000937⟩
Animal, Vol 8, Iss 7, Pp 1031-1044 (2014)
animal, Published by Elsevier (since 2021) / Cambridge University Press (until 2020), 2014, 8 (7), pp.1031-1044. ⟨10.1017/S1751731114000937⟩

The impact of nutrition and energy reserves on the fertility of ruminants has been extensively described. However, the metabolic factors and the molecular mechanisms involved in the interactions between nutrition and ovarian function are still poorly

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::52447cad2a01a96377bad6adcea0244e
https://hal.archives-ouvertes.fr/hal-01129828

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Evaluation of a disposable device for the measurement of haemoglobin a1 c in dogs

Autor: Brian Catchpole, S. Mountford, S. Barabas, R. J. Scaramuzzi

Publikováno v: Veterinary Record. 162:47-49

A disposable device designed for measuring glycated haemoglobin (hba1c) in human blood was evaluated for use in dogs. edta blood samples were collected from 50 normoglycaemic dogs, 10 dogs suffering from anaemia and 112 diabetic dogs. hba1c was measu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c62d19bc983e26e2eea5bb91f4e3090
https://doi.org/10.1136/vr.162.2.47

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The effect of ovarian arterial infusion of human recombinant inhibin and bovine follicular fluid on ovarian hormone secretion by ewes with an autotransplanted ovary

Autor: B K Campbell, R J Scaramuzzi

Publikováno v: Journal of Endocrinology. 149:531-540

Recombinant human inhibin A (rhInh) or steroid-free bovine follicular fluid (bFF) were infused into the ovarian artery of anoestrous ewes with ovarian autotransplants induced to ovulate with a pulsatile regimen of GnRH applied after a 10-day pretreat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b9a0c604fac90ca85d535c44cb0a836d
https://doi.org/10.1677/joe.0.1490531

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Effect of acute immunoneutralization of inhibin in ewes during the late luteal phase of the oestrous cycle on ovarian hormone secretion and follicular development during the subsequent follicular phase

Autor: R. J. Scaramuzzi, B. K. Campbell

Publikováno v: Reproduction. 104:337-345

Ewes with ovarian autotransplants received either inhibin antiserum (10 ml i.v. ; n = 6) or sheep serum (10 ml i.v. ; n = 5) on day 10 of the luteal phase with additional daily injections (1 ml i.v.) from 48 h after the initial injection until the en

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8eb7fee89ad0ba8ccebd8489833b46ef
https://doi.org/10.1530/jrf.0.1040337

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Regulation of folliculogenesis and the determination of ovulation rate in ruminants

Autor: Robert B. Gilchrist, M. A. Driancourt, C. Viñoles, R J Scaramuzzi, Kenneth P. McNatty, Robert Webb, Graeme Martin, Alan S. McNeilly, Bruce K. Campbell, David T. Baird, Danielle Monniaux, Joëlle Dupont, Philippe Monget, Joanne E. Fortune

Publikováno v: Reproduction, Fertility and Development
Reproduction, Fertility and Development, CSIRO Publishing, 2011, 23 (3), pp.444-467. ⟨10.1071/RD09161⟩

The paper presents an update of our 1993 model of ovarian follicular development in ruminants, based on knowledge gained from the past 15 years of research. The model addresses the sequence of events from follicular formation in fetal life, through t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3400c306396d8c22bfaf424b552327a
https://hal.archives-ouvertes.fr/hal-01129490

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Nutritional and Metabolic Mechanisms in the Ovary and Their Role in Mediating the Effects of Diet on Folliculogenesis: A Perspective

Autor: R J, Scaramuzzi, H M, Brown, J, Dupont

Publikováno v: Reproduction in Domestic Animals
Reproduction in Domestic Animals, Wiley, 2010, 45 (S3), pp.32-41. ⟨10.1111/j.1439-0531.2010.01662.x⟩

Travail présenté lors de la conférence 14th Annual Conference of the European Society for Domestic Animal Reproduction (ESDAR), 15-18 sept. 2010, à Eger (Hongrie); International audience; Folliculogenesis in ruminants is a nutritionally sensitive

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid_dedup__::d841c77eb0bf46f7cc52fc40a2a32acf
https://hal.inrae.fr/hal-02658032

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