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Padilha-Nakaghi LC, Uscategui RAR, Oliveira MEF, Nociti RP, Macente BI, Coutinho LN, Nakaghi EYO, Motta GA, Santos VJC, Maciel GS, Mariano RSG, Barros FFPC, Primo FL, Tedesco AC, Vicente WRR. Local α1-adrenergic blockers: An alternative for sheep cervix dilation? Anim Reprod Sci 2020; 222:106609. [PMID: 33002660 DOI: 10.1016/j.anireprosci.2020.106609] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 09/21/2020] [Accepted: 09/22/2020] [Indexed: 11/29/2022]
Abstract
To facilitate transcervical artificial insemination in sheep, the effects of local treatment with α1-adrenergic receptor antagonists on cervix dilation and hemodynamics were evaluated. Ewes (n = 7) were subjected to oestrous synchronisation every 40 days and assigned to treatments in a Latin square experimental design (seven animals × seven periods) with a factorial treatment arrangement (A × B), Factors A (prazosin or tamsulosin) and B (1, 2, or 4 mg/animal). Ewes of the six treatment groups (P1, P2, P4, T1, T2, and T4) were administered α1-adrenergic receptor antagonists while those of the control group (CG) were administered only α1-adrenergic antagonist carrier agent. Distance that the transcervical catheter penetrated without cervical resistance, mean arterial pressure, and uterine artery dopplerfluxometry were evaluated before and after 30 min, 1, 2, 4, 8, and 10 h of treatment. Catheter penetration distance was greater in ewes of the T4 and P4 groups (P < 0.01), with there being a positive correlation between dose and distance (r = 0.243). The penetration distance was similar (P = 0.84) for treated groups, with the greatest penetration occurring 2, 4, and 6 h after treatment (P < 0.01). The passage into the uterine lumen was greater (P = 0.013) in ewes of the P4 (17.9 %) and T4 (19.6 %) groups. There were no effects on blood pressure or uterine blood flow (P> 0.05). These preliminary results indicate there are benefits of treatment with 4 mg/animal of tamsulosin or prazosin in catheter passage through the sheep cervix 2-6 h after administration without hemodynamic effects.
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Affiliation(s)
- Luciana C Padilha-Nakaghi
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal, Faculdade de Ciências Agrárias e Veterinárias (FCAV), Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane s/n, Cep 14884-900, Jaboticabal, SP, Brazil.
| | - Ricardo A R Uscategui
- Instituto de Ciências Agrarias, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Unaí, MG, Brazil
| | - Maria Emilia F Oliveira
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal, Faculdade de Ciências Agrárias e Veterinárias (FCAV), Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane s/n, Cep 14884-900, Jaboticabal, SP, Brazil
| | - Ricardo P Nociti
- Departamento de Medicina Veterinária-ZMV, Faculdade de Zootecnia e Engenharia de Alimentos (FZEA), Universidade de São Paulo (USP), SP, Brazil
| | - Beatrice I Macente
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal, Faculdade de Ciências Agrárias e Veterinárias (FCAV), Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane s/n, Cep 14884-900, Jaboticabal, SP, Brazil
| | - Leandro N Coutinho
- Instituto da Saúde e Produção Animal (ISPA), Universidade Federal Rural da Amazônia (UFRA), Belém, PA, Brazil
| | - Eduardo Y O Nakaghi
- Coordenadoria de Defesa Agropecuária do Estado de São Paulo (CDA/SSA-SP), Jaboticabal, SP, Brazil
| | - Guilherme A Motta
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal, Faculdade de Ciências Agrárias e Veterinárias (FCAV), Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane s/n, Cep 14884-900, Jaboticabal, SP, Brazil
| | - Victor J C Santos
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal, Faculdade de Ciências Agrárias e Veterinárias (FCAV), Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane s/n, Cep 14884-900, Jaboticabal, SP, Brazil
| | - Giovanna S Maciel
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal, Faculdade de Ciências Agrárias e Veterinárias (FCAV), Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane s/n, Cep 14884-900, Jaboticabal, SP, Brazil
| | - Renata S G Mariano
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal, Faculdade de Ciências Agrárias e Veterinárias (FCAV), Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane s/n, Cep 14884-900, Jaboticabal, SP, Brazil
| | - Felipe F P C Barros
- Departamento de Medicina e Cirurgia Veterinária, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brazil
| | - Fernando L Primo
- Departamento de Engenharia de Bioprocessos e Biotecnologia, Faculdade de Ciências Farmacêuticas de Araraquara, Universidade Estadual Paulista (UNESP), Araraquara, SP, Brazil
| | - Antonio C Tedesco
- Departamento de Química, Laboratório de Fotobiologia e Fotomedicina, Centro de Nanotecnologia e Engenharia Tecidual, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de SãoPaulo (USP), Ribeirão Preto, SP, Brazil
| | - Wilter R R Vicente
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal, Faculdade de Ciências Agrárias e Veterinárias (FCAV), Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane s/n, Cep 14884-900, Jaboticabal, SP, Brazil
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Van Damme T, Blancquaert D, Couturon P, Van Der Straeten D, Sandra P, Lynen F. Wounding stress causes rapid increase in concentration of the naturally occurring 2',3'-isomers of cyclic guanosine- and cyclic adenosine monophosphate (cGMP and cAMP) in plant tissues. PHYTOCHEMISTRY 2014; 103:59-66. [PMID: 24735826 DOI: 10.1016/j.phytochem.2014.03.013] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 02/16/2014] [Accepted: 03/10/2014] [Indexed: 05/21/2023]
Abstract
3',5'-Cyclic guanosine monophosphate (cGMP) and 3',5'-cyclic adenosine monophosphate (cAMP) are well reported second messenger molecules involved in cellular signal transduction, in physiological functions such as neurotransmission in animals and in the modulation of cell growth and differentiation. In plants, 3',5'-cyclic nucleotides have been implicated in the regulation of ion homeostasis, hormone and stress responses. The behavior of the 2',3'-cyclic nucleotide variants is also known in animal tissue but no quantitative information is available about 2',3'-cAMP and 2',3'-cGMP in plant material. A recently developed HILIC-SPE/LC-MS/MS method for the analysis of cyclic nucleotides in blood and animal tissue was therefore adapted to measure 2',3'-cAMP and 2',3'-cGMP concentrations in plant material. Cyclic nucleotide concentrations were measured in Arabidopsis thaliana (Col-0) leaves before and after the application of wounding stress. A significant (∼5-fold) up-regulation of 2',3'-cAMP and 2',3'-cGMP was measured in Arabidopsis leaves compared to the control samples. The results indicate a thus far unreported strong correlation between plant stress and both 2',3'-cAMP and 2',3'-cGMP levels in plant material, and may open new avenues towards understanding the role of cyclic nucleotides in plants.
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Affiliation(s)
- Thomas Van Damme
- Department of Organic Chemistry, Pfizer Analytical Research Center, Ghent University, Krijgslaan 281 S4-bis, B-9000 Ghent, Belgium
| | - Dieter Blancquaert
- Laboratory of Functional Plant Biology, Department of Physiology, Ghent University, K.L. Ledeganckstraat 35, B-9000 Ghent, Belgium
| | - Pauline Couturon
- Department of Organic Chemistry, Separation Science Group, Ghent University, Krijgslaan 281 S4-bis, B-9000 Ghent, Belgium
| | - Dominique Van Der Straeten
- Laboratory of Functional Plant Biology, Department of Physiology, Ghent University, K.L. Ledeganckstraat 35, B-9000 Ghent, Belgium
| | - Pat Sandra
- Department of Organic Chemistry, Pfizer Analytical Research Center, Ghent University, Krijgslaan 281 S4-bis, B-9000 Ghent, Belgium; Department of Organic Chemistry, Separation Science Group, Ghent University, Krijgslaan 281 S4-bis, B-9000 Ghent, Belgium
| | - Frédéric Lynen
- Department of Organic Chemistry, Pfizer Analytical Research Center, Ghent University, Krijgslaan 281 S4-bis, B-9000 Ghent, Belgium; Department of Organic Chemistry, Separation Science Group, Ghent University, Krijgslaan 281 S4-bis, B-9000 Ghent, Belgium.
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Abstract
The ovarian noradrenergic stimulation or noradrenaline (NA) administration directly to the ovary in cow increases ovarian oxytocin (OT) release and post-translational processing of OT synthesis within a few minutes has been established in both in vivo and in vitro studies. Furthermore, NA affects progesterone secretion and its synthesis by an increase of cytochrome P450scc and 3beta-hydroxysteroid dehydrogenase activity. This effect is mediated via luteal cell beta(1)- and beta(2)-receptors. Their total amount correlates with peripheral progesterone concentrations during the luteal phase and this reflects the ability of the ovary to react to beta-stimulation. On the other hand, ovarian denervation causes a decrease of steroidogenic activity in the CL, an increase of beta-receptors on luteal cells, a delay in follicular development and the disruption of cyclicity. Moreover, decrease of progesterone secretion by 20-30% was seen after brief pharmacological blockade of ovarian beta-receptors in the mid-cycle of cattle. We assume that tonic beta-stimulation of the CL ensures the basal secretion of progesterone, whereas acute noradrenergic activation supports the CL during stressful situations which could impair its function. Conversely, long-lasting increase in blood catecholamine concentrations markedly decreases the number of beta-receptors in CL, presumably due to their down-regulation. Concentrations of dopamine (DA) within the CL are highly correlated with those of NA during the estrous cycle, and are higher in the newly-formed than in the developed corpus luteum, the regressed corpus luteum or the corpus luteum of pregnant females. Bovine CL can synthesise de novo NA from DA as a precursor. Concluding, presented data indicate that noradrenergic stimulation can be an important part of mechanism supporting secretory function of CL.
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Affiliation(s)
- J Kotwica
- Institute of Animal Reproduction and Food Research, Division of Endocrinology and Pathology, The Polish Academy of Sciences, P.O. Box 55, Prawochenskiego 5, 10-718 Olsztyn-Kortowo, Poland.
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Bogacki M, Kotwica J. Influence of noradrenaline on progesterone synthesis and post-translational processing of oxytocin synthesis in the bovine corpus luteum. Theriogenology 1999; 52:91-102. [PMID: 10734408 DOI: 10.1016/s0093-691x(99)00112-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Noradrenaline (NA) influences secretory function of the bovine corpus luteum (CL), stimulating secretion of progesterone and ovarian oxytocin (OT). To study whether NA is able to stimulate progesterone synthesis and to affect post-translational OT processing, different doses of NA alone or in combination with different doses of OT were added to bovine CL slices from 8 to 13 d of the estrous cycle. To determine which receptors NA affects, and if dopamine (DA) also affects CL function, we used NA or DA combined with a beta-antagonist (propranolol). The results indicated that NA stimulates both luteal progesterone and OT content; furthermore, it increased the activity of 3 beta-hydroxysteroid dehydrogenase (3 beta-HSD) and peptidyl glycine-alpha-amidating mono-oxygenase (PGA), terminal enzymes in synthesis of these 2 hormones. The stimulating effect of NA was inhibited by propranolol and by pre-treatment of CL slices with high OT doses. Post-translational processing of OT synthesis by PGA activation was also stimulated by DA, but this effect was inhibited by beta-receptor blocker. Thus DA acts in CL as a NA precursor. In conclusion, it can be assumed that the noradrenergic system affects CL secretory function on different levels of regulation. Furthermore, a high concentration of OT in CL prevents NA from activating PGA and thus decreases post-translational OT synthesis.
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Affiliation(s)
- M Bogacki
- Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, Olsztyn-Kortowo, Poland
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