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Conde AJH, Alves JPM, Fernandes CCL, Silva MRL, Cavalcanti CM, Bezerra AF, Teixeira DÍA, Rondina D. Effect of one or two fixed glutamate doses on follicular development, ovarian-intraovarian blood flow, ovulatory rate, and corpus luteum quality in goats with a low body condition score. Anim Reprod 2023; 20:e20220117. [PMID: 38148928 PMCID: PMC10750810 DOI: 10.1590/1984-3143-ar2022-0117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 11/06/2023] [Indexed: 12/28/2023] Open
Abstract
This study aimed to investigate the effect of a short glutamate supply on the ovarian response in goats with low body condition scores. Twenty-one goats had their estrus and follicular waves synchronized using three injections of prostaglandin analog at seven-day intervals. Goats were allocated to groups receiving 10 mg/kg LW (iv) of glutamate administered in a single dose (group LBCG1, n = 7) or in two doses five days apart (group LBCG2, n = 7). The control group (LBC; n = 7) received saline solution. Glutamate treatment did not affect glucose, cholesterol, or glutathione peroxidase levels, body weight, or adipose deposits. During the experimental period, the LBCG2 group showed a higher (P < 0.05) number of follicles (> 3 mm) and an increase in follicle diameter (P < 0.05). Glutamate supply improved (P < 0.05) the intraovarian Doppler blood area size in the LBCG groups, and the second dose in LBCG2 also induced a higher (P < 0.05) systolic and diastolic peak of the ovary artery. After ovulation induction, LBCG2 exhibited a high (P < 0.05) volume of the corpus luteum and vascularized area. We concluded that the supply of two doses of glutamate five days apart was efficient in ovarian stimulation in goats with a low body condition.
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Affiliation(s)
| | | | | | | | | | | | | | - Davide Rondina
- Faculdade de Veterinária, Universidade Estadual do Ceará, Fortaleza, CE, Brasil
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Abdelnaby EA, Alhaider AK, El-Maaty AMA, Ragab RSA, Seida AA, El-Badry DA. Ovarian and uterine arteries blood flow velocities waveform, hormones and nitric oxide in relation to ovulation in cows superstimulated with equine chorionic gonadotropin and luteolysis induction 10 and 17 days after ovulation. BMC Vet Res 2023; 19:205. [PMID: 37833782 PMCID: PMC10571355 DOI: 10.1186/s12917-023-03692-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 08/11/2023] [Indexed: 10/15/2023] Open
Abstract
To investigate the ovarian responses, ovarian and uterine hemodynamics, circulating ovarian hormones, and nitric oxide (NO) with their relations in superstimulated cows. Eight Holstein Friesian dry cows previously synchronized with CIDR underwent rectal Doppler ultrasound scanning and blood sampling after administrating eCG (1500 I.U) on day 10 of the second ovulation (day -5). Cows were treated with 12.5 mg prostaglandin F2α (PGF2α) on days 10 and 17 after ovulation. Estradiol, progesterone, and NO were measured. Results showed that from ≥ 13 follicles, five follicles ovulated from both ovaries. The ovulated follicles increased antrum colored area and colored area % till day -1. The developed corpora lutea (CLs) attained similar diameter, area, colored area, and colored area % from day 2 till day 15. The peak point of velocity (PSV) of uterine arteries decreased while that of ovarian arteries increased from day -4 to day 0. Both ovarian arteries diameter, resistance index (RI), PSV, end velocity (EDV) and systolic/diastolic ratio (S/D) positively correlated (P < 0.0001), but their pulsatility index (PI) negatively correlated (P < 0.0001). The uterine arteries PI, RI, PSV, EDV, time average velocity (TAMV) and S/D negatively correlated (P < 0.0001) but their diameters positively correlated. Estradiol increased but progesterone decreased from day -5 till day 0. After ovulation, P4 reached maximum values on day 9 and started to decrease till day 19.NO showed one peak on day -3 and another one from day 3 to day 9. Conclusions: Blood flow of ovarian arteries is different from uterine arteries and depended on pre- or post-ovulation.
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Affiliation(s)
- Elshymaa A Abdelnaby
- Department of Clinical Sciences, College of Veterinary Medicine, King Faisal University, P.O. Box 400, 31982, Al-Ahsa, Saudi Arabia.
- Theriogenology Department, Faculty of Veterinary Medicine, Cairo University, Giza Square, Giza, 12211, Egypt.
| | - Abdulrhman K Alhaider
- Theriogenology Department, Faculty of Veterinary Medicine, Cairo University, Giza Square, Giza, 12211, Egypt
| | - Amal M Abo El-Maaty
- Animal Reproduction and AI Department, Veterinary Division, National Research Centre, Dokki Giza, Egypt
| | - Refaat S A Ragab
- Department of Clinical Sciences, College of Veterinary Medicine, King Faisal University, P.O. Box 400, 31982, Al-Ahsa, Saudi Arabia
| | - Adel A Seida
- Department of Clinical Sciences, College of Veterinary Medicine, King Faisal University, P.O. Box 400, 31982, Al-Ahsa, Saudi Arabia
| | - Diya A El-Badry
- Artificial Insemination and Embryo Transfer Department, Animal Reproduction Research Institute, Agriculture Research Center, Giza, Egypt
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Vercellini R, Blanco PG, Arizmendi A, Diez M, Rodríguez R, Gobello C. Ovarian and uterine two-dimensional and Doppler ultrasonographic changes in the feline peri-estrus period. J Feline Med Surg 2022; 24:1053-1059. [PMID: 34915765 PMCID: PMC10812312 DOI: 10.1177/1098612x211067016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVES The aim of this study was to evaluate two-dimensional and Doppler ultrasonographic changes of the ovary and uterus during estrus and the early post-estrus period in domestic cats. METHODS Two-dimensional and Doppler ultrasonographic evaluations of the ovaries and uterus were performed in seven queens on days 1, 3 and 5 of estrus, and 5 days after estrus (AE5). RESULTS On day 1, 5.4 ± 0.5 follicles of 2.1 ± 0.1 mm were detected progressively increasing in number and size up to day 5 and then decreased on AE5 (P <0.05). A maximum follicular diameter of 4.1 ± 0.1 mm was achieved on day 5. Both during and after estrus, the uterus was generally hypoechoic compared with the surrounding tissues and delineated by a thin hyperechoic line corresponding to the serosa. In some animals, the uterine layers were distinguished during and after estrus. The blood flow waveforms of the intraovarian and uterine arteries were characterized by a systolic peak and diastolic flow extending throughout the remainder of the cardiac cycle to the next systole. In the uterine artery waveforms, the early diastolic notch was mild or absent during most estrous observations. The resistance index of the intraovarian arteries decreased up to day 5, and then increased on AE5 (P <0.05). The resistance index of the uterine arteries was lower during estrus than in the post-estrus period (P <0.05). CONCLUSIONS AND RELEVANCE It is concluded that in the domestic cat, follicular number and diameter as well as ovarian and uterine blood flow changed during and immediately after estrus. Doppler ultrasound proved suitable to evaluate the hemodynamic changes involved in the cyclic remodeling of ovarian and uterine tissues that occurs during and after follicular growth in domestic cats.
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Affiliation(s)
- Rosario Vercellini
- Center of Reproductive Physiology and Diagnostic Imaging (CEFIRE & MECODIAG), Faculty of Veterinary Sciences, National University of La Plata (NULP), Argentina
- CONICET, La Plata, Argentina
| | - Paula G Blanco
- Center of Reproductive Physiology and Diagnostic Imaging (CEFIRE & MECODIAG), Faculty of Veterinary Sciences, National University of La Plata (NULP), Argentina
- CONICET, La Plata, Argentina
| | - Analía Arizmendi
- Teaching Hospital, Faculty of Veterinary Sciences (NULP), Argentina
- CONICET, La Plata, Argentina
| | - Marisa Diez
- Teaching Hospital, Faculty of Veterinary Sciences (NULP), Argentina
| | - Raúl Rodríguez
- Center of Reproductive Physiology and Diagnostic Imaging (CEFIRE & MECODIAG), Faculty of Veterinary Sciences, National University of La Plata (NULP), Argentina
- Teaching Hospital, Faculty of Veterinary Sciences (NULP), Argentina
| | - Cristina Gobello
- Center of Reproductive Physiology and Diagnostic Imaging (CEFIRE & MECODIAG), Faculty of Veterinary Sciences, National University of La Plata (NULP), Argentina
- CONICET, La Plata, Argentina
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Köhne M, Unruh C, Böttcher D, Tönissen A, Ulrich R, Sieme H. Evaluation of an ex vivo model of the blood-perfused equine uterus. Theriogenology 2022; 184:82-91. [DOI: 10.1016/j.theriogenology.2022.02.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 02/24/2022] [Accepted: 02/28/2022] [Indexed: 11/16/2022]
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Nieto-Olmedo P, Martín-Cano FE, Gaitskell-Phillips G, Ortiz-Rodríguez JM, Peña FJ, Ortega-Ferrusola C. Power Doppler can detect the presence of 7-8 day conceptuses prior to flushing in an equine embryo transfer program. Theriogenology 2020; 145:1-9. [PMID: 31972496 DOI: 10.1016/j.theriogenology.2020.01.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 01/08/2020] [Accepted: 01/08/2020] [Indexed: 12/26/2022]
Abstract
In order to determine whether differences in uterine blood flow between pregnant and non-pregnant mares can be used to predict the presence of the equine embryo prior to flushing in an embryo transfer program, power Doppler ultrasonography was used on a total of 52 mares on days 7 or 8 post-ovulation. Computer analysis of Doppler images was subsequently performed using ImageJ v1.48 software. Vascular perfusion of the endometrium was analyzed using spot meter techniques, measuring mean pixel intensity and area of blood flow. Mares with positive flushings presented a higher uterine blood flow area (one embryo: 54.01 ± 2.27 mm2 or two embryos: 61.01 ± 6.73 mm2) prior to embryo recovery compared to barren mares (21.77 ± 2.22 mm2) (p≤0.05). However, significant differences in vascular perfusion were not detected between single or twin pregnancies. Blood flow area appears to be a good predictor for differentiation between pregnant and non-pregnant mares with an AUC: 0.869; p≤0.001 and an optimal cut-off value of 37.21 mm2. Both the mare's age and day of embryo recovery caused effects on uterine vascular perfusion. According to Youden's J statistics the uterine blood flow area of young pregnant mares was greater than 25.4 mm2 on day 7 (with a sensitivity of 75% and a specificity of 87.5%) and greater than 21.02 mm2 on day 8 post-ovulation (with a sensitivity of 93.8% and a specificity of 100%). The uterine blood flow area in adult pregnant mares was greater than 41.4 mm2 on day 7 (with a sensitivity of 80% and a specificity of 85.5%) and greater than 35.55 mm2 on day 8 after ovulation (with a sensitivity of 97.2% and a specificity of 85.7%). Evaluation on day 8 is therefore considered to be more reliable. Older and middle aged pregnant mares (5-18 years old) had increased uterine vascularization compared to young pregnant mares (2-5 years old) (p≤0.001). Conversely, older barren mares showed higher endometrial vascularity (35.06 ± 2.56 mm2) than young (17.21 ± 1.26 mm2) and middle aged non-pregnant mares (23.84 ± 1.50 mm2) (p≤0.05). We hypothesized that the higher blood flow area seen in older barren mares may be a consequence of a subclinical endometritis due to repeated flushing for embryo recovery. The results of the present study indicate that power Doppler ultrasound combined with computer assisted analysis of images are reliable techniques to detect early pregnancy prior to embryo recovery.
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Affiliation(s)
- P Nieto-Olmedo
- CEFIVA-Centro de Fertilización In vitro de Asturias, Spain.
| | - F E Martín-Cano
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain.
| | - G Gaitskell-Phillips
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain.
| | - J M Ortiz-Rodríguez
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain.
| | - F J Peña
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain.
| | - C Ortega-Ferrusola
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain.
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Are the spectral Doppler indices of ovarian arteries indicative of antral follicular development and predictive of ovulatory responses and embryo yields in superovulated ewes? Reprod Biol 2019; 19:394-403. [PMID: 31806576 DOI: 10.1016/j.repbio.2019.11.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 11/14/2019] [Accepted: 11/16/2019] [Indexed: 11/23/2022]
Abstract
Nineteen ewes received 200 mg of pFSH administered in eight decreasing doses from Days 1 to 4, starting three days before CIDR® device removal. Ten ewes received an injection of 350 μg of estradiol benzoate at CIDR® device insertion (Group E) and nine animals served as controls (Group C). B-mode and spectral Doppler ultrasonographic examinations were performed daily throughout superovulatory treatment to enumerate ovarian antral follicles and to determine ovarian blood flow indices, respectively. There were no differences (P > 0.05) in superovulatory responses between left and right ovaries/uterine horns or the two groups of animals. End-diastolic velocity (EDV) and mean velocity (Vm) values were greater (P < 0.05) on Days 1 and 2, and peak systolic velocity (SVp) was greater (P < 0.05) on Day 3 in Group C than in Group E. In Group E 15 correlations was recorded among indices (SVp, Vm, EDV, flow velocity integral-FVI, and pulsatility index-PI) and follicles numbers in different size classes on Days 1, 2 and 4, and seven correlations among indices (SVp, EDV, Vm, and vascular resistance index-RI) and superovulatory/embryo results (numbers of regressing corpora lutea, numbers/percentages of degenerated embryos and viability rates) on Days 1, 2 and 3. In Group C, there were three correlations among EDV and RI and medium-sized/large follicle numbers on Days 1 and 3, and five correlations among indices (EDV, RI and PI) and superovulatory/embryo results (numbers of luteinized unovulated follicles, degenerated embryos and unfertilized eggs) on Days 2 or 4. There was a lack of consistency in the velocimetric correlates of antral follicle numbers and superovulatory responses between the left and right side. Therefore, the usefulness of ovarian arterial indices to predict ovine superovulatory outcomes remains equivocal and requires further confirmatory studies.
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Oliveira MEF, Ribeiro IF, Rodriguez MGK, Maciel GS, Fonseca JF, Brandão FZ, Bartlewski PM. Assessing the usefulness of B-mode and colour Doppler sonography, and measurements of circulating progesterone concentrations for determining ovarian responses in superovulated ewes. Reprod Domest Anim 2018; 53:742-750. [DOI: 10.1111/rda.13165] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 02/13/2018] [Indexed: 01/29/2023]
Affiliation(s)
- MEF Oliveira
- Department of Preventative Veterinary Medicine and Animal Reproduction; School of Agricultural and Veterinary Sciences; São Paulo State University; Jaboticabal Brazil
| | - IF Ribeiro
- Department of Preventative Veterinary Medicine and Animal Reproduction; School of Agricultural and Veterinary Sciences; São Paulo State University; Jaboticabal Brazil
| | - MGK Rodriguez
- Department of Preventative Veterinary Medicine and Animal Reproduction; School of Agricultural and Veterinary Sciences; São Paulo State University; Jaboticabal Brazil
| | - GS Maciel
- Department of Preventative Veterinary Medicine and Animal Reproduction; School of Agricultural and Veterinary Sciences; São Paulo State University; Jaboticabal Brazil
| | - JF Fonseca
- Brazilian Agricultural Research Corporation-Embrapa Goats and Sheep; Coronel Pacheco Brazil
| | - FZ Brandão
- Faculty of Veterinary Medicine; Fluminense Federal University; Niterói Brazil
| | - PM Bartlewski
- Department of Biomedical Sciences; Ontario Veterinary College; University of Guelph; Guelph ON Canada
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Medeiros M, Farinasso A, Nery I, Souza H, Vasconcelos J, Trindade K, Batista A, Manso Filho H, Carneiro G, Wischral A. Estudo da vascularização folicular e do corpo lúteo de éguas cíclicas tratadas com extrato de pituitária equina utilizando ultrassom Doppler colorido. ARQ BRAS MED VET ZOO 2017. [DOI: 10.1590/1678-4162-9350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
RESUMO Informações sobre a vascularização da parede folicular e do corpo lúteo equino, associadas à superovulação, são escassas. Com o objetivo de avaliar o efeito superovulatório do extrato de pituitária equina (EPE) no fluxo sanguíneo folicular e luteal, foram utilizadas seis éguas Puro Sangue Árabe, em dois ciclos estrais (controle e tratamento). As éguas foram monitoradas diariamente por ultrassonografia modo B, até que os folículos atingissem diâmetro de 23mm (desvio). No ciclo tratamento, as éguas receberam 8mg de EPE, uma vez ao dia, por via IM, até que dois ou mais folículos atingissem o diâmetro entre 32 e 35mm. A ovulação foi induzida com acetato de deslorelina, quando os folículos atingiram, no mínimo, 35mm. No momento do desvio folicular, da indução da ovulação e do último exame pré-ovulatório, foi utilizada a ultrassonografia modo B para medir o diâmetro dos folículos e, no oitavo dia pós-ovulação, para a área do corpo lúteo (CL). Utilizou-se também ultrassonografia com Doppler colorido para avaliar a perfusão sanguínea da parede folicular e do parênquima luteal. No ciclo controle, foi realizado o mesmo procedimento, exceto pelo uso do EPE. Os dados foram submetidos à análise de variância, com nível de significância de 5%. Não foi observado efeito do EPE sobre o número de ovulações, o diâmetro dos folículos, a vascularização da parede folicular e a concentração sérica de estrógeno. Os animais, tratados ou não, apresentaram CLs funcionais, não havendo diferença na área do parênquima ou da vascularização luteal, nem na concentração sérica de progesterona, no oitavo dia após a ovulação. Foi observado que o EPE proporcionou um maior número de folículos subordinados no momento da indução da ovulação do folículo dominante (P ≤ 0,05). Embora esses folículos não tenham chegado a ovular, concluiu-se que o EPE atuou no crescimento de folículos, que podem ser utilizados em outras biotécnicas, como a transferência de oócitos, com maior aproveitamento da reserva folicular de ovários equinos.
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Affiliation(s)
| | | | | | - H.M. Souza
- Universidade Federal Rural de Pernambuco, Brazil
| | | | | | - A.M. Batista
- Universidade Federal Rural de Pernambuco, Brazil
| | | | | | - A. Wischral
- Universidade Federal Rural de Pernambuco, Brazil
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Abdelnaby EA, Abo El-Maaty AM. Dynamics of Follicular Blood Flow, Antrum Growth, and Angiogenic Mediators in Mares From Deviation to Ovulation. J Equine Vet Sci 2017. [DOI: 10.1016/j.jevs.2017.04.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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10
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Relationship of antral follicular blood flow velocity to superovulatory responses in ewes. Anim Reprod Sci 2017; 182:48-55. [DOI: 10.1016/j.anireprosci.2017.04.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 04/03/2017] [Accepted: 04/21/2017] [Indexed: 11/19/2022]
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Beltrame RT, Covre C, Littig LB, Martins ADB, Quirino CR, Junior AB, da Costa RLD. Transrectal Doppler sonography of uterine blood flow in ewes during pregnancy. Theriogenology 2016; 91:55-61. [PMID: 28215686 DOI: 10.1016/j.theriogenology.2016.12.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 12/12/2016] [Accepted: 12/14/2016] [Indexed: 01/20/2023]
Abstract
In sheep, there is a lack of information on the behaviour of hemodynamic indices and parameters of blood flow velocity of the uterine artery during pregnancy, making it impossible to determine the real meaning of the values found and their probable relevance in normal physiological or pathological states. The objective of the present study was to evaluate the blood flow velocity parameters and hemodynamic indices of the uterine artery in ewes (18) during pregnancy (33). Based on non-invasive colour Doppler sonography, we evaluated the peak systolic velocity (PS), end diastolic velocity (ED), time-averaged maximum and minimum velocity in a cardiac cycle (TAMAX and TAMEAN), pulsatility index (PI), resistance index (RI), systolic/diastolic ratio (S/D), heart rate (HR), arterial diameter (AD) and the blood flow volume (BFV). Examinations started on day 28 and continued at two-week intervals until parturition. The Doppler parameters and the diameter of the uterine artery underwent significant changes during pregnancy. In the evaluated animals, indices related to resistance of the uterine artery, namely the impedance of blood flow, decreased throughout the initial, middle and late stages of gestation (PI: 1.15, 1.04, 0.97; RI: 0.61, 0.59, 0.57; S/D: 2.68, 2.52, 2.39, respectively) (p < 0.05). In contrast, the contents related to higher uterine irrigation increased during gestation (PS, ED, TAMAX, TAMEAN, HR, AD and BFV) (p < 0.05). No differences were found between the means of the variables in relation to the right and left uterine arteries and between single and multiple pregnancies in the hemodynamic indices. The present study is the first to demonstrate changes in uterine hemodynamics throughout pregnancy in sheep.
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Affiliation(s)
- Renato Travassos Beltrame
- Centro Universitário do Espírito Santo (UNESC), Avenida Fioravante Rossi, 2930, Colatina, ES, 29703-900, Brazil.
| | - Carolina Covre
- Centro Universitário do Espírito Santo (UNESC), Avenida Fioravante Rossi, 2930, Colatina, ES, 29703-900, Brazil
| | - Lucas Buss Littig
- Centro Universitário do Espírito Santo (UNESC), Avenida Fioravante Rossi, 2930, Colatina, ES, 29703-900, Brazil
| | - Amanda de Barros Martins
- Centro Universitário do Espírito Santo (UNESC), Avenida Fioravante Rossi, 2930, Colatina, ES, 29703-900, Brazil
| | - Celia Raquel Quirino
- Universidade Estadual do Norte Fluminense (UENF), Av. Alberto Lamego, 2000, Parque California, Campos dos Goitacazes, RJ, 28035-200, Brazil
| | - Aylton Bartholazzi Junior
- Universidade Estadual do Norte Fluminense (UENF), Av. Alberto Lamego, 2000, Parque California, Campos dos Goitacazes, RJ, 28035-200, Brazil
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Souza S, Alves B, Alves K, Santos J, Diogenes Y, Bhat M, Melo L, Freitas V, Teixeira D. Relationship of Doppler velocimetry parameters with antral follicular population and oocyte quality in Canindé goats. Small Rumin Res 2016. [DOI: 10.1016/j.smallrumres.2016.06.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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13
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Bartlewski PM, Seaton P, Franco Oliveira ME, Kridli RT, Murawski M, Schwarz T. Intrinsic determinants and predictors of superovulatory yields in sheep: Circulating concentrations of reproductive hormones, ovarian status, and antral follicular blood flow. Theriogenology 2016; 86:130-43. [DOI: 10.1016/j.theriogenology.2016.04.024] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 12/29/2015] [Accepted: 03/14/2016] [Indexed: 10/21/2022]
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14
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Castro T, Oliveira FA, Siddiqui MAR, Baldrighi JM, Wolf CA, Ginther OJ. Stimulation of LH, FSH, and luteal blood flow by GnRH during the luteal phase in mares. Theriogenology 2015; 85:740-6. [PMID: 26600292 DOI: 10.1016/j.theriogenology.2015.10.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 10/08/2015] [Accepted: 10/11/2015] [Indexed: 11/15/2022]
Abstract
A study was performed on the effect of a single dose per mare of 0 (n = 9), 100 (n = 8), or 300 (n = 9) of GnRH on Day 10 (Day 0 = ovulation) on concentrations of LH, FSH, and progesterone (P4) and blood flow to the CL ovary. Hormone concentration and blood flow measurements were performed at hours 0 (hour of treatment), 0.25, 0.5, 1, 2, 3, 4, and 6. Blood flow was assessed by spectral Doppler ultrasonography for resistance to blood flow in an ovarian artery before entry into the CL ovary. The percentage of the CL with color Doppler signals of blood flow was estimated from videotapes of real-time color Doppler imaging by an operator who was unaware of mare identity, hour, or treatment dose. Concentrations of LH and FSH increased (P < 0.05) at hour 0.25 and decreased (P < 0.05) over hours 1 to 6; P4 concentration was not altered by treatment. Blood flow resistance decreased between hours 0 and 1, but the decrease was greater (P < 0.05) for the 100-μg dose than for the 300-μg dose. The percentage of CL with blood flow signals increased (P < 0.05) between hours 0 and 1 with no significant difference between the 100- and 300-μg doses. The results supported the hypothesis that GnRH increases LH concentration, vascular perfusion of the CL ovary, and CL blood flow during the luteal phase; however, P4 concentration was not affected.
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Affiliation(s)
- T Castro
- Eutheria Foundation, Cross Plains, Wisconsin, USA; Centro de Ciências Agrárias, Universidade Federal do Espírito Santo, Alegre, Espírito Santo, Brazil; Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - F A Oliveira
- Centro de Ciências Agrárias, Universidade Federal do Espírito Santo, Alegre, Espírito Santo, Brazil
| | - M A R Siddiqui
- Eutheria Foundation, Cross Plains, Wisconsin, USA; Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - J M Baldrighi
- Eutheria Foundation, Cross Plains, Wisconsin, USA; Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - C A Wolf
- Eutheria Foundation, Cross Plains, Wisconsin, USA; Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - O J Ginther
- Eutheria Foundation, Cross Plains, Wisconsin, USA; Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin, USA.
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Macrì F, Pugliese M, Di Pietro S, Coco MA, Liotta L, Niutta PP, Nardi S, Quartuccio M, Lanteri G, Palumbo Piccionello A. Doppler Ultrasonographic Estimation of Renal Resistive Index in Horse: Comparison Between Left and Right Kidneys. J Equine Vet Sci 2015. [DOI: 10.1016/j.jevs.2014.12.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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16
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Correlations between ovarian follicular blood flow and superovulatory responses in ewes. Anim Reprod Sci 2014; 144:30-7. [DOI: 10.1016/j.anireprosci.2013.10.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Revised: 10/07/2013] [Accepted: 10/24/2013] [Indexed: 11/20/2022]
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