1
|
Monroy J, Cortés OD, Domínguez R, Mendoza‐Garrido ME, Gallegos E, Cárdenas M, Aragón A, Ayala ME. The differential sensitivity of the hypothalamic-hypophysial-ovarian axis to 5-hydroxytryptophan alters the secretion of estradiol. Exp Physiol 2024; 109:365-379. [PMID: 38064347 PMCID: PMC10988714 DOI: 10.1113/ep091158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 11/22/2023] [Indexed: 03/02/2024]
Abstract
Serotonin [5-hydroxytryptamine (5-HT)] modulates ovarian function. The precursor of 5-HT, 5-hydroxytryptophan (5-HTP), has been used to treat depression. However, the effects of 5-HTP on ovarian and reproductive physiology remain unknown. In this research, we analysed the impact of 5-HTP on the monoaminergic system and its interactions with the reproductive axis and ovarian estradiol secretion when administered by distinct routes. Female rats 30 days of age were injected with 5-HTP i.p. (100 mg/kg), into the ovarian bursa (1.5 µg/40 µL) or into the median raphe nucleus (20 µg/2.5 µL) and were killed 60 or 120 min after injection. As controls, we used rats of the same age injected with vehicle (0.9% NaCl). Monoamine, gonadotrophin and steroid ovarian hormone concentrations were measured. The injection of 5-HTP either i.p. or directly into the ovarian bursa increased the concentrations of 5-HT and the metabolite 5-hydroxyindole-3-acetic acid in the ovary. For both routes of administration, the serum concentration of estradiol increased. After i.p. injection of 5-HTP, the concentrations of luteinizing hormone were decreased and follicle-stimulating hormone increased after 120 min. Micro-injection of 5-HTP into the median raphe nucleus increased the concentrations of 5-HT in the anterior hypothalamus and dopamine in the medial hypothalamus after 120 min. Our results suggest that the administration of 5-HTP either i.p. or directly into the ovarian bursa enhances ovarian estradiol secretion.
Collapse
Affiliation(s)
- Juana Monroy
- Laboratorio de Pubertad, Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores ZaragozaUniversidad Nacional Autónoma de MéxicoMexico CityMexico
| | - Omar D. Cortés
- Laboratorio de Pubertad, Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores ZaragozaUniversidad Nacional Autónoma de MéxicoMexico CityMexico
| | - Roberto Domínguez
- Laboratorio de Pubertad, Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores ZaragozaUniversidad Nacional Autónoma de MéxicoMexico CityMexico
| | - María Eugenia Mendoza‐Garrido
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y Estudios Avanzados (CINVESTAV)Instituto Politécnico NacionalMexico CityMexico
| | - Eloir Gallegos
- Laboratorio de Pubertad, Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores ZaragozaUniversidad Nacional Autónoma de MéxicoMexico CityMexico
| | - Mario Cárdenas
- Departamento de Biología de la ReproducciónInstituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránMexico CityMexico
| | - Andrés Aragón
- Laboratorio de Gametos y Desarrollo Tecnológico, Facultad de Estudios Superiores IztacalaUniversidad Nacional Autónoma de MéxicoTlalnepantlaState of MéxicoMexico
| | - María E. Ayala
- Laboratorio de Pubertad, Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores ZaragozaUniversidad Nacional Autónoma de MéxicoMexico CityMexico
| |
Collapse
|
2
|
Silva CC, Benítez DP, Flores A, Cortés GD, Vieyra E, Juárez-Tapia CR, Romero-Reyes J, Domínguez R. Unilateral lesion of the suprachiasmatic nucleus impairs estradiol feedback, follicular development, estrous cycle and ovulation. Reproduction 2023; 166:459-471. [PMID: 37855440 DOI: 10.1530/rep-23-0178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 10/10/2023] [Indexed: 10/20/2023]
Abstract
In brief The SCN regulates ovulation by stimulating the preovulatory surge of gonadotropins. This study revealed an additional role in the sensitization of the hypothalamus to estradiol that changes along the estrous cycle and the side of the nucleus. Abstract Ovulation is timed by neural signals originating at the suprachiasmatic nucleus (SCN) that trigger ovulation when converge with high estradiol levels, which indicates the maturation of ovarian follicles. We have shown that the hypothalamic regulation of ovulation is asymmetrical and we hypothesized that the paired SCN could contribute to such symmetries. We unilaterally lesioned the SCN of rats at each stage of the estrous cycle and evaluated the acute effects on the progression of their estrous cycle, follicular development and ovulation. Lesions prevented progression of the estrous cycle when performed in estrus/metestrus but not in diestrus/proestrus. Abnormalities in follicular development were observed in the nonovulating lesioned rats and this was independent of the side of the SCN destroyed and the stage of the cycle when surgery was performed. Groups of lesioned rats were then hormonally primed with GnRH or estradiol to assess the neuroendocrine pathway altered by the treatment. GnRH restored ovulation, suggesting that both SCN are needed for proper triggering of the preovulatory surge of GnRH and that unilateral lesion does not impair the sensitivity of the pituitary or the ovary to GnRH and gonadotropins, respectively. With regard to restoring ovulation, estradiol was asymmetrically effective in rats lesioned in estrous, partially effective in rats operated at diestrus and ineffective in rats at metestrus. Our results indicate that the SCN regulates the activity of the hypothalamic-pituitary-ovarian axis not only by modulating the preovulatory surge of GnRH/gonadotropins but also by promoting the hypothalamic integration of estrogenic signals from the ovaries in an asymmetric and stage-dependent fashion.
Collapse
Affiliation(s)
- Carlos-Camilo Silva
- Chronobiology of Reproduction Research Lab. Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, México City, México
- Developmental Biology Lab. Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, México City, México
| | - Diana Pamela Benítez
- Department of Brain Sciences, UK Dementia Research Institute at Imperial College London, Imperial College London, United Kingdom
| | - Angélica Flores
- Chronobiology of Reproduction Research Lab. Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, México City, México
- Developmental Biology Lab. Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, México City, México
| | - Georgina Daniela Cortés
- Laboratorio de Técnicas de Reproducción Asistida, Clínica de la Fertilidad, México City, México
| | - Elizabeth Vieyra
- Chronobiology of Reproduction Research Lab. Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, México City, México
| | | | - Jessica Romero-Reyes
- Facultad de Química, Universidad Nacional Autónoma de México, México City, México
| | - Roberto Domínguez
- Chronobiology of Reproduction Research Lab. Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, México City, México
- Developmental Biology Lab. Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, México City, México
| |
Collapse
|
3
|
Espinoza JA, Navarrete MI, Linares R, Chaparro-Ortega A, Ramírez DA, Rosas G, Vieyra E, Domínguez R, Morales-Ledesma L. Effects of chronic exposure to cold stress on ovarian functions in prepubertal rats. Reprod Biol 2023; 23:100756. [PMID: 36924552 DOI: 10.1016/j.repbio.2023.100756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 02/23/2023] [Accepted: 03/06/2023] [Indexed: 03/17/2023]
Abstract
Ovarian functions are modulated by the hypothalamus-pituitary-ovary axis and neural signals. Stress modifies the activity of the sympathetic nervous system. In adult female rats, cold stress results in higher noradrenergic and steroidogenic activity of the ovary, anovulation and the presence of ovarian cysts; however, it is unknown whether this response occurs in prepubertal rats. The purpose of this study was to analyse the effects of cold stress initiated in the prepubertal stage of female rats on ovarian function. Female rats 24 days old were exposed to three, five or eight weeks of cold stress. Autopsies were performed at the end of each stress period. The parameters analysed were the number of ova shed by ovulating animals; the number of ovulating animals; the serum concentrations of progesterone, testosterone, and oestradiol; and the ovarian concentrations of norepinephrine and 3-methoxy-4-hydroxyphenyl-glycol. Our results show that chronic cold stress applied to prepubertal rats did not modify the number of ovulating animals, the total number of ova shed, or progesterone and testosterone concentrations in any of the periods analysed. Oestradiol concentration was lower in the animals exposed to five or eight weeks of stress. The ovarian norepinephrine concentration was higher in the animals exposed to three weeks of stress and was lower at eight weeks of stress. No changes in ovarian morphology were observed. Our data suggest that the changes in noradrenergic activity resulting from chronic cold stress experienced in the prepubertal stage do not modify ovarian architecture or affect the ovulatory response in adulthood.
Collapse
Affiliation(s)
- Julieta A Espinoza
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000 México, DF, Mexico
| | - María I Navarrete
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000 México, DF, Mexico
| | - Rosa Linares
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000 México, DF, Mexico; Biology of Reproduction Research Unit, Laboratorio de Endocrinología, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000 México, DF, Mexico
| | - Andrea Chaparro-Ortega
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000 México, DF, Mexico
| | - Deyra A Ramírez
- Facultad de Estudios Superiores Zaragoza Campus III, UNAM., CP 90640 México, San Miguel Contla, Tlaxcala, Mexico
| | - Gabriela Rosas
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000 México, DF, Mexico
| | - Elizabeth Vieyra
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000 México, DF, Mexico; Biology of Reproduction Research Unit, Chronobiology of Reproduction Research Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000 México, DF, Mexico
| | - Roberto Domínguez
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000 México, DF, Mexico
| | - Leticia Morales-Ledesma
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000 México, DF, Mexico.
| |
Collapse
|
4
|
Vieyra E, García JC, Zarco HA, Linares R, Rosas G, Ramírez DA, Chaparro A, Espinoza JA, Domínguez R, Morales-Ledesma L. Suprachiasmatic nucleus and vagus nerve trigger preovulatory LH and ovulation. Reproduction 2023; 165:147-157. [PMID: 36342662 DOI: 10.1530/rep-22-0119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 11/07/2022] [Indexed: 11/09/2022]
Abstract
In brief In the proestrus day, the neural and endocrine signals modulate ovarian function. This study shows vagus nerve plays a role in the multisynaptic pathways of communication between the suprachiasmatic nucleus and the ovaries where such neural information determines ovulation. Abstract The suprachiasmatic nucleus (SCN) regulates the activity of several peripheral organs through a parasympathetic-sympathetic pathway. Previously, we demonstrated that atropine (ATR) microinjection in the right SCN of rats during proestrus blocks ovulation. In the present study, we analysed whether the vagus nerve is one of the neural pathways by which the SCN regulates ovulation. For this, CIIZ-V strain cyclic rats on the day of proestrus were microinjected with a saline solution (vehicle) or ATR in the right or left SCN, which was followed by ventral laparotomy or ipsilateral vagotomy to the microinjection side. Some animal groups were sacrificed (i) on the same day of the surgery to measure oestradiol, progesterone and luteinizing hormone (LH) levels or (ii) at 24 h after surgery to evaluate ovulation. The left vagotomy in rats microinjected with ATR in the left SCN did not modify ovulation. In rats with ATR microinjection in the right SCN, the right vagotomy increased the levels of steroids and LH on the proestrus and ovulatory response. The present results suggest that the right vagus nerve plays a role in the multisynaptic pathways of communication between the SCN and the ovaries and indicate that such neural information participates in the regulation of the oestradiol and progesterone surge, which triggers the preovulatory peak of LH and determines ovulation.
Collapse
Affiliation(s)
- Elizabeth Vieyra
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, Ciudad de México.,Biology of Reproduction Research Unit, Chronobiology of Reproduction Research Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, Ciudad de México
| | - Julio C García
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, Ciudad de México
| | - Hugo A Zarco
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, Ciudad de México
| | - Rosa Linares
- Biology of Reproduction Research Unit, Laboratorio de Endocrinología, Facultad de Estudios Superiores Zaragoza, UNAM, Ciudad de México
| | - Gabriela Rosas
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, Ciudad de México
| | - Deyra A Ramírez
- Facultad de Estudios Superiores Zaragoza Campus III, UNAM, San Miguel Contla, Tlaxcala, México
| | - Andrea Chaparro
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, Ciudad de México
| | - Julieta A Espinoza
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, Ciudad de México
| | - Roberto Domínguez
- Biology of Reproduction Research Unit, Chronobiology of Reproduction Research Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, Ciudad de México
| | - Leticia Morales-Ledesma
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, Ciudad de México
| |
Collapse
|
5
|
Bodaghzadeh A, Alirezalu K, Amini S, Alirezalu A, Domínguez R, Lorenzo J. Fatty acid composition, phytochemicals and antioxidant potential of Capparis spinosa sedes. grasasaceites 2022. [DOI: 10.3989/gya.0890201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The present study evaluates the contents in bioactive compounds, antioxidant activity, oil content and fatty acid composition of Capparis spinosa seeds. Samples were collected from 5 different habitats (AH: Ahar; KU: Kurdistan; U1, U2 and U3: Urmia) in Iran. The oil content in the seeds ranged from 16 to 27%. The predominant fatty acid was linoleic acid (45-50%) followed by oleic acid (30-39%), palmitic acid (2-8%) and stearic acid (2-3%). Total phenolic content (TPC) varied from 16.3 to 24.2 mg GAE/ g DW; total flavonoid content (TFC) ranged from 1.48 to 3.05 mg QE/g DW; and the antioxidant activity (DPPH assay) of the seeds was between 35 and 63%. The compounds obtained from different genotypes of C. spinosa seeds had different compositions, great antioxidant capacity and unsaturated fatty acids, and therefore could be a prospective source of natural bioactive molecules for the food and health industry.
Collapse
|
6
|
Silva CC, Bolaños-Hurtado M, Juárez-Tapia C, Flores A, Arrieta-Cruz I, Cruz ME, Domínguez R. Unraveling the Role of Discrete Areas of the Rat Brain in the Regulation of Ovulation through Reversible Inactivation by Tetrodotoxin Microinjections. J Vis Exp 2020. [PMID: 32955496 DOI: 10.3791/61493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Many experimental approaches have been used for studying the role of the brain in the regulation of ovulation. Examples include the lesion and deafferentation of neuronal groups, which are both invasive methods that permanently impair the integrity of the target area. These methods are accompanied by collateral effects that can affect the analysis of acute and temporal regulatory mechanisms. The stereotaxic implantation of guide cannulas aimed at specific brain regions, followed by a recovery period, allows researchers to microinject different drugs after the disappearance of the undesired effects of the surgery. Tetrodotoxin has been used to determine the roles of several brain areas in diverse physiological processes because it transiently inhibits the sodium-dependent action potentials, thus blocking all neural activity in the target region. This protocol combines this method with strategies for the assessment of the estrous cycle and ovulation to reveal the role of discrete brain regions in the regulation of ovulation at particular times of any given stage of the estrous cycle. Awake and unrestrained rats (Rattus norvegicus) were used to avoid the blocking effects that anesthetics and stress hormones exert on ovulation. This protocol can be easily adapted to other species, brain targets and pharmacological agents to study different physiological processes. Future improvements to this method include the design of a microinjection system using glass capillaries of small diameter instead of guide cannulas. This will reduce the amount of tissue damaged during the implantation and decrease the spread of the infused drugs outside the target area.
Collapse
Affiliation(s)
- Carlos-Camilo Silva
- Chronobiology of Reproduction Research Lab, Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México; Developmental Biology Lab, Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México
| | - Montserrat Bolaños-Hurtado
- Chronobiology of Reproduction Research Lab, Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México
| | | | - Angélica Flores
- Chronobiology of Reproduction Research Lab, Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México; Developmental Biology Lab, Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México
| | - Isabel Arrieta-Cruz
- Neuroendocrinology Lab, Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México; Department of Basic Research, Instituto Nacional de Geriatria, Ministry of Health
| | - María-Esther Cruz
- Neuroendocrinology Lab, Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México
| | - Roberto Domínguez
- Chronobiology of Reproduction Research Lab, Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México; Developmental Biology Lab, Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México; Neuroendocrinology Lab, Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México;
| |
Collapse
|
7
|
Olvera-Juárez E, Silva CC, Flores A, Arrieta-Cruz I, Mendoza-Garcés L, Martínez-Coria H, López-Valdés HE, Cárdenas M, Domínguez R, Gutiérrez-Juárez R, Cruz ME. The content of gonadotropin-releasing hormone (GnRH), kisspeptin, and estrogen receptors (ERα/ERβ) in the anteromedial hypothalamus displays daily variations throughout the rat estrous cycle. Cell Tissue Res 2020; 381:451-460. [PMID: 32710274 DOI: 10.1007/s00441-020-03258-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Accepted: 07/08/2020] [Indexed: 12/13/2022]
Abstract
The content of gonadotropin-releasing hormone (GnRH), its mRNA, and estrogen receptor alpha (ERα) and beta (ERβ) in the hypothalamus varies throughout the estrous cycle. Furthermore, the abundance of these molecules displays asymmetry between the right and left side. In the present study, we investigated the changes in the content of ERα, ERβ, kisspeptin, and GnRH by western blot in the left and right anteromedial hypothalamus, at four different times during each stage of the rat estrous cycle. The serum levels of the follicle-stimulating hormone (FSH) and luteinizing hormone (LH) were also measured. ERα and ERβ levels changed depending on the stage of the estrous cycle, meanwhile that of kisspeptin was modified according to both the hour of the day and the stage of the cycle. Except in estrus day, ERβ was higher in the right hypothalamus, while ERα was similar in both sides. During both proestrus and estrus, the content of kisspeptin and GnRH was higher in the right hypothalamus. The highest levels of FSH and LH occurred at 17:00 h of proestrus. But at estrus, the highest FSH levels were observed at 08:00 h and the lowest at 17:00 h. Thus, the current results show that the content of ERα, ERβ, kisspeptin, and GnRH in the anteromedial hypothalamus are regulated as a function of the stage of the estrous cycle and the hour of the day. Furthermore, the content of these proteins is regularly higher in the right anteromedial hypothalamus, regardless of the stage of the cycle or time of the day.
Collapse
Affiliation(s)
- Esteban Olvera-Juárez
- Neuroendocrinology Laboratory, Reproductive Biology Research Unit, Faculty of High Studies Zaragoza, National Autonomous University of Mexico, 09230, Mexico City, Mexico
| | - Carlos-Camilo Silva
- Chronobiology of Reproduction Research Laboratory, Reproductive Biology Research Unit, Faculty of High Studies Zaragoza, National Autonomous University of Mexico, 09230, Mexico City, Mexico
| | - Angélica Flores
- Neuroendocrinology Laboratory, Reproductive Biology Research Unit, Faculty of High Studies Zaragoza, National Autonomous University of Mexico, 09230, Mexico City, Mexico
| | - Isabel Arrieta-Cruz
- Department of Basic Research, National Institute of Geriatrics, Ministry of Health, 10200, Mexico City, Mexico.
| | - Luciano Mendoza-Garcés
- Department of Basic Research, National Institute of Geriatrics, Ministry of Health, 10200, Mexico City, Mexico
| | - Hilda Martínez-Coria
- Division of Research, Faculty of Medicine, National Autonomous University of Mexico, 04510, Mexico City, Mexico
| | - Héctor E López-Valdés
- Division of Research, Faculty of Medicine, National Autonomous University of Mexico, 04510, Mexico City, Mexico
| | - Mario Cárdenas
- Department of Reproductive Biology, National Institute of Medical Sciences and Nutrition Salvador Zubirán, Ministry of Health, 14080, Mexico City, Mexico
| | - Roberto Domínguez
- Neuroendocrinology Laboratory, Reproductive Biology Research Unit, Faculty of High Studies Zaragoza, National Autonomous University of Mexico, 09230, Mexico City, Mexico
- Chronobiology of Reproduction Research Laboratory, Reproductive Biology Research Unit, Faculty of High Studies Zaragoza, National Autonomous University of Mexico, 09230, Mexico City, Mexico
| | - Roger Gutiérrez-Juárez
- Department of Biomedical Sciences, School of Medicine, Faculty of High Studies Zaragoza, National Autonomous University of Mexico, 09230, Mexico City, Mexico
| | - María-Esther Cruz
- Neuroendocrinology Laboratory, Reproductive Biology Research Unit, Faculty of High Studies Zaragoza, National Autonomous University of Mexico, 09230, Mexico City, Mexico
| |
Collapse
|
8
|
Abstract
Several aspects of the physiology and behavior of organisms are expressed rhythmically with a 24-h periodicity and hence called circadian rhythms. Such rhythms are thought to be an adaptive response that allows to anticipate cyclic events in the environment. In mammals, the circadian system is a hierarchically organized net of endogenous oscillators driven by the hypothalamic suprachiasmatic nucleus (SCN). This system is synchronized by the environment throughout afferent pathways and in turn it organizes the activity of tissues by means of humoral secretions and neuronal projections. It has been shown that reproductive cycles are regulated by the circadian system. In rodents, the lesion of the SCN results on alterations of the estrous cycle, sexual behavior, tonic and phasic secretion of gonadotropin releasing hormone (GnRH)/gonadotropins and in the failure of ovulation. Most of the studies regarding the circadian control of reproduction, in particular of ovulation, have only focused on the participation of the SCN in the triggering of the proestrus surge of gonadotropins. Here we review aspects of the evolution and organization of the circadian system with particular focus on its relationship with the reproductive cycle of laboratory rodents. Experimental evidence of circadian control of neuroendocrine events indispensable for ovulation that occur prior to proestrus are discussed. In order to offer a working model of the circadian regulation of reproduction, its participation on aspects ranging from gamete production, neuroendocrine regulation, sexual behavior, mating coordination, pregnancy and deliver of the product should be assessed experimentally.
Collapse
Affiliation(s)
- Carlos-Camilo Silva
- Chronobiology of Reproduction Research Lab-UIBR, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, México City, Mexico
- Programa de Doctorado en Ciencias Biomédicas, Universidad Nacional Autónoma de México, México City, Mexico
| | - Roberto Domínguez
- Chronobiology of Reproduction Research Lab-UIBR, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, México City, Mexico.
| |
Collapse
|
9
|
Jodra P, Lago-Rodríguez A, Sánchez-Oliver AJ, López-Samanes A, Pérez-López A, Veiga-Herreros P, San Juan AF, Domínguez R. Effects of caffeine supplementation on physical performance and mood dimensions in elite and trained-recreational athletes. J Int Soc Sports Nutr 2020; 17:2. [PMID: 31900166 PMCID: PMC6942320 DOI: 10.1186/s12970-019-0332-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 12/13/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Caffeine supplementation (CAFF) has an established ergogenic effect on physical performance and the psychological response to exercise. However, few studies have compared the response to CAFF intake among athletes of different competition level. This study compares the acute effects of CAFF on anaerobic performance, mood and perceived effort in elite and moderately-trained recreational athletes. METHODS Participants for this randomized, controlled, crossover study were 8 elite athletes (in the senior boxing national team) and 10 trained-recreational athletes. Under two experimental conditions, CAFF supplementation (6 mg/kg) or placebo (PLAC), the athletes completed a Wingate test. Subjective exertion during the test was recorded as the rating of perceived exertion (RPE) both at the general level (RPEgeneral) and at the levels muscular (RPEmuscular) and cardiorespiratory (RPEcardio). Before the Wingate test, participants completed the questionnaires Profiles of Moods States (POMS) and Subjective Vitality Scale (SVS). RESULTS In response to CAFF intake, improvements were noted in Wpeak (11.22 ± 0.65 vs 10.70 ± 0.84; p = 0.003; [Formula: see text] =0.44), Wavg (8.75 ± 0.55 vs 8.41 0.46; p = 0.001; [Formula: see text] =0.53) and time taken to reach Wpeak (7.56 ± 1.58 vs 9.11 ± 1.53; p < 0.001; [Formula: see text] =0.57) both in the elite and trained-recreational athletes. However, only the elite athletes showed significant increases in tension (+ 325%), vigor (+ 31%) and SVS (+ 28%) scores after the intake of CAFF compared to levels recorded under the condition PLAC (p < 0.05). Similarly, levels of vigor after consuming CAFF were significantly higher in the elite than the trained-recreational athletes (+ 5.8%). CONCLUSIONS CAFF supplementation improved anaerobic performance in both the elite and recreational athletes. However, the ergogenic effect of CAFF on several mood dimensions and subjective vitality was greater in the elite athletes.
Collapse
Affiliation(s)
- P. Jodra
- Faculty of Health Sciences, Universidad Alfonso X El Sabio, Madrid, Spain
- University of Alcalá, Madrid, Spain
| | | | - A. J. Sánchez-Oliver
- Department of Human Motricity and Sports Performance, Faculty of Education Sciences, Seville University, Seville, Spain
| | - A. López-Samanes
- School of Physiotherapy, Faculty of Health Sciences, Universidad Francisco de Vitoria, Madrid, Spain
| | - A. Pérez-López
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, University of Alcalá, Madrid, Spain
| | - P. Veiga-Herreros
- Faculty of Health Sciences, Universidad Alfonso X El Sabio, Madrid, Spain
| | - A. F. San Juan
- Sports Biomechanics Laboratory, Department of Health and Human Performance, Faculty of Physical Activity and Sport Sciences – INEF, Universidad Politécnica de Madrid, Madrid, Spain
| | - R. Domínguez
- Faculty of Health Sciences, Universidad Isabel I, Burgos, Spain
| |
Collapse
|
10
|
Silva CC, Cortés GD, Javier CY, Flores A, Domínguez R. A neural circadian signal essential for ovulation is generated in the suprachiasmatic nucleus during each stage of the oestrous cycle. Exp Physiol 2019; 105:258-269. [PMID: 31769118 DOI: 10.1113/ep087942] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 11/25/2019] [Indexed: 12/31/2022]
Abstract
NEW FINDINGS What is the central question of this study? Is the suprachiasmatic nucleus the structure that generates the neural circadian signals that occur during every stage of the oestrous cycle, not only pro-oestrus, and are these signals essential for proper regulation of ovulation? What is the main finding and its importance? Transient inhibition of Na+ -dependent action potentials in the suprachiasmatic nucleus by tetrodotoxin microinjection at 14.00 h inhibits ovulation irrespective of the stage of the oestrous cycle at which the procedure is performed. Microinjection of saline solution into the suprachiasmatic nucleus has a disruptive effect on ovulation that depends on the stage of the cycle at which it is administered. ABSTRACT Reproduction is a highly timed process that depends on both the reproductive and circadian systems. The core oscillator of the latter resides at the suprachiasmatic nuclei (SCN) and it is pivotal for the regulation of the pro-oestrus pre-ovulatory surge of gonadotropins in females. There is evidence to suggest that this system may be involved in the regulation of neuroendocrine events that are essential for ovulation and that occur prior to pro-oestrus. We explored this possibility by transiently inactivating the SCN. Female rats were implanted with guide cannulas aimed at the SCN. After recovery of the oestrous cycle, animals were injected with tetrodotoxin (TTX), artificial cerebrospinal fluid (ACSF) or saline solution while freely moving. Injections were performed at 14.00 h of each stage of the oestrous cycle. Animals were killed on the next predicted oestrus day, the number of ova shed was counted and intact rats at oestrus stage were used as absolute control. ACSF did not modify ovulation. Saline solution blocked ovulation in oestrus- and dioestrus-injected rats. Irrespectively of the stage of the oestrous cycle, TTX blocked ovulation. These results lead us to suggest that a neural circadian signal, pivotal for triggering the gonadotropin pre-ovulatory surge, arises from the SCN during the critical window of pro-oestrus. We also suggest that a similar signal, needed for the regulation of other events that are indispensable for proper regulation of ovulation, is also generated in this nucleus during the other stages of the cycle at a similar time.
Collapse
Affiliation(s)
- Carlos-Camilo Silva
- Chronobiology of Reproduction Research Lab, Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, México City, México.,Developmental Biology Lab, Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, México City, México
| | - Georgina Daniela Cortés
- Chronobiology of Reproduction Research Lab, Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, México City, México
| | - Cintia Yolanda Javier
- Chronobiology of Reproduction Research Lab, Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, México City, México
| | - Angélica Flores
- Chronobiology of Reproduction Research Lab, Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, México City, México.,Developmental Biology Lab, Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, México City, México
| | - Roberto Domínguez
- Chronobiology of Reproduction Research Lab, Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, México City, México.,Developmental Biology Lab, Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, México City, México
| |
Collapse
|
11
|
Venegas B, De León Gordillo LY, Rosas G, Espinoza JA, Morán C, Domínguez R, Morales-Ledesma L. In rats with estradiol valerate-induced polycystic ovary syndrome, the acute blockade of ovarian β-adrenoreceptors improve ovulation. Reprod Biol Endocrinol 2019; 17:95. [PMID: 31744506 PMCID: PMC6862835 DOI: 10.1186/s12958-019-0539-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 11/04/2019] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Polycystic ovary syndrome is characterized by hyperactivity of the ovarian sympathetic nervous system, increases in the content and release of norepinephrine, as well as decreases in the number of β-adrenoreceptors. In the present study, β-adrenoreceptors in the ovaries of rats with polycystic ovary syndrome were blocked and analyzed the resultant effects on ovulation, hormone secretion and the enzymes responsible for the synthesis of catecholamines. METHODS At 60 days of age, vehicle or estradiol valerate-treated rats were injected with propranolol [10- 4 M] into the ovarian bursas on oestrus day. The animals were sacrificed on the next day of oestrus, and the ovulation response, the steroid hormone levels in the serum and the immunoreactivity of tyrosine hydroxylase and dopamine β-hydroxylase in the ovaries were measured. RESULTS In animals with the induction of polycystic ovary syndrome and β-adrenoreceptor blocking, ovulation was restored in more than half of the animals and resulted in decreased hyperandrogenism with respect to the levels observed in the estradiol valerate-treated group. Tyrosine hydroxylase and dopamine β-hydroxylase were present in the theca cells of the growing follicles and the interstitial gland. Injection of propranolol restored the tyrosine hydroxylase and ovarian dopamine β-hydroxylase levels in rats with polycystic ovary syndrome induction. CONCLUSIONS The results suggest that a single injection into the ovarian bursas of propranolol, a nonselective antagonist of β-adrenoreceptor receptors, decreases the serum testosterone concentration and the formation of ovarian cysts, improving the ovulation rate that accompanies lower levels of tyrosine hydroxylase and dopamine β-hydroxylase in the ovary.
Collapse
Affiliation(s)
- Berenice Venegas
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP, 15000, México, DF, Mexico
- Área de Procesos Celulares Fundamentales, Facultad de Ciencias Biológicas, Benemérita Universidad Autónoma de Puebla, 72570, Puebla, CP, Mexico
| | - Lizzbeth Yureli De León Gordillo
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP, 15000, México, DF, Mexico
| | - Gabriela Rosas
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP, 15000, México, DF, Mexico
| | - Julieta A Espinoza
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP, 15000, México, DF, Mexico
| | - Carolina Morán
- Centro de Investigación en Fisicoquímica de Materiales, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Roberto Domínguez
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP, 15000, México, DF, Mexico
| | - Leticia Morales-Ledesma
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP, 15000, México, DF, Mexico.
| |
Collapse
|
12
|
Linares R, Rosas G, Vieyra E, Ramírez DA, Velázquez DR, Espinoza JA, Morán C, Domínguez R, Morales-Ledesma L. In Adult Rats With Polycystic Ovarian Syndrome, Unilateral or Bilateral Vagotomy Modifies the Noradrenergic Concentration in the Ovaries and the Celiac Superior Mesenteric Ganglia in Different Ways. Front Physiol 2019; 10:1309. [PMID: 31695622 PMCID: PMC6817458 DOI: 10.3389/fphys.2019.01309] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 09/30/2019] [Indexed: 11/13/2022] Open
Abstract
In rats with polycystic ovarian syndrome (PCOS) induced by estradiol valerate (EV) injection, sectioning of the vagus nerve in the juvenile stage restores ovulatory function, suggesting that the vagus nerve stimulates the onset and development of PCOS. We analyzed whether in adult rats, the role played by the vagus nerve in PCOS development is associated with the nerve’s regulation of noradrenergic activity in the celiac superior mesenteric ganglion (CSMG). Ten-day-old rats were injected with corn oil [vehicle (Vh)] or EV (2 mg). At 76 days of age, rats injected with Vh or EV were subjected to sham surgery or the sectioning of one or both vagus nerves (vagotomy). The animals were sacrificed at 80–82 days of age at vaginal estrus smear. Compared to Vh-treated animals, EV-induced PCOS rats showed a lack of ovulation, the presence of follicular cysts, and a high concentration of testosterone, without changes in noradrenaline concentrations in the CSMG or ovaries. In PCOS rats, sham surgery lowered serum testosterone and noradrenaline concentrations in the CSMG but did not restore ovulation. In animals with PCOS, vagotomy lowered testosterone concentrations to a larger degree than in sham-surgery animals. The ovaries of rats with PCOS and vagotomy showed fresh corpora lutea, indicating ovulation. In EV-treated rats with unilateral vagotomy, the concentration of noradrenaline in the CSMG was similar to that in rats with PCOS and sham surgery, which did not ovulate, while in the ovaries of PCOS rats with left or bilateral vagotomy, the noradrenaline concentration was lower than that in sham-surgery-treated animals. Our results suggest that the vagus nerve regulates PCOS development through a different mechanism than the increase in the noradrenergic activity in the CSMG; however, in ovaries, the restoration of ovulation is associated with a decrease in ovarian noradrenaline.
Collapse
Affiliation(s)
- Rosa Linares
- Laboratorio de Fisiología Reproductiva, de la Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores Zaragoza, UNAM, Mexico City, Mexico
| | - Gabriela Rosas
- Laboratorio de Fisiología Reproductiva, de la Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores Zaragoza, UNAM, Mexico City, Mexico
| | - Elizabeth Vieyra
- Laboratorio de Fisiología Reproductiva, de la Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores Zaragoza, UNAM, Mexico City, Mexico
| | - Deyra A Ramírez
- Laboratorio de Fisiología Reproductiva, de la Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores Zaragoza, UNAM, Mexico City, Mexico
| | - Daniel R Velázquez
- Laboratorio de Fisiología Reproductiva, de la Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores Zaragoza, UNAM, Mexico City, Mexico
| | - Julieta A Espinoza
- Laboratorio de Fisiología Reproductiva, de la Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores Zaragoza, UNAM, Mexico City, Mexico
| | - Carolina Morán
- Centro de Investigación en Fisicoquímica de Materiales, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Roberto Domínguez
- Laboratorio de Fisiología Reproductiva, de la Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores Zaragoza, UNAM, Mexico City, Mexico
| | - Leticia Morales-Ledesma
- Laboratorio de Fisiología Reproductiva, de la Unidad de Investigación en Biología de la Reproducción, Facultad de Estudios Superiores Zaragoza, UNAM, Mexico City, Mexico
| |
Collapse
|
13
|
Vieyra E, Ramírez DA, Linares R, Rosas G, Domínguez R, Morales‐Ledesma L. Stimulation of nicotinic receptors in the suprachiasmatic nucleus results in a higher number of growing follicles and ova shed. Exp Physiol 2019; 104:1179-1189. [DOI: 10.1113/ep087538] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 06/24/2019] [Indexed: 01/05/2023]
Affiliation(s)
- Elizabeth Vieyra
- Biology of Reproduction Research Unit, Physiology of Reproduction LaboratoryFacultad de Estudios Superiores Zaragoza UNAM, AP 9‐020 CP 15000 México D.F
- Biology of Reproduction Research Unit, Laboratorio de Investigación en Cronobiología y ReproducciónFacultad de Estudios Superiores Zaragoza UNAM, AP 9‐020 CP 15000 México D.F
| | - Deyra A. Ramírez
- Biology of Reproduction Research Unit, Physiology of Reproduction LaboratoryFacultad de Estudios Superiores Zaragoza UNAM, AP 9‐020 CP 15000 México D.F
| | - Rosa Linares
- Biology of Reproduction Research Unit, Physiology of Reproduction LaboratoryFacultad de Estudios Superiores Zaragoza UNAM, AP 9‐020 CP 15000 México D.F
| | - Gabriela Rosas
- Biology of Reproduction Research Unit, Physiology of Reproduction LaboratoryFacultad de Estudios Superiores Zaragoza UNAM, AP 9‐020 CP 15000 México D.F
| | - Roberto Domínguez
- Biology of Reproduction Research Unit, Laboratorio de Investigación en Cronobiología y ReproducciónFacultad de Estudios Superiores Zaragoza UNAM, AP 9‐020 CP 15000 México D.F
| | - Leticia Morales‐Ledesma
- Biology of Reproduction Research Unit, Physiology of Reproduction LaboratoryFacultad de Estudios Superiores Zaragoza UNAM, AP 9‐020 CP 15000 México D.F
| |
Collapse
|
14
|
Arrieta-Cruz I, Librado-Osorio R, Flores A, Mendoza-Garcés L, Chavira R, Cárdenas M, Gutiérrez-Juárez R, Domínguez R, Cruz ME. Estrogen Receptors Alpha and Beta in POA-AHA Region Regulate Asymmetrically Ovulation. Cell Mol Neurobiol 2019; 39:1139-1149. [PMID: 31250245 DOI: 10.1007/s10571-019-00708-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 06/18/2019] [Indexed: 11/24/2022]
Abstract
We examined the role of the estrogen receptors alpha (ERα) and beta (ERβ) in of the preoptic-anterior hypothalamic area (POA-AHA) in the regulation of ovulation in rats. The number of ERα- and ERβ-immunoreactive (-ir) cells was determined at 09:00, 13:00, and 17:00 h of each stage of the estrous cycle in intact rats. Additionally, the effects of blocking ERα and ERβ on ovulation rate at 09:00 h on diestrus-2 or proestrus day through the microinjection of methyl-piperidino-pyrazole (MPP) or cyclofenil in either side of POA-AHA were evaluated. The number of ERα-ir and ERβ-ir cells in POA-AHA varied in each phase of estrous cycle. Either MPP or cyclofenil in the right side of POA-AHA on diestrus-2 day reduced the ovulation rate, while at proestrus day it was decreased in rats treated in either side with MPP, and in those treated with cyclofenil in the left side. MPP or cyclofenil produced a decrease in the surge of luteinizing hormone levels (LH) and an increase in progesterone and follicle stimulating hormone (FSH). Replacement with synthetic luteinizing hormone-releasing hormone in non-ovulating rats treated with MPP or cyclofenil restored ovulation. These results suggest that activation of estrogen receptors on the morning of diestrus-2 and proestrus day asymmetrically regulates ovulation and appropriately regulates the secretion of FSH and progesterone in the morning and afternoon of proestrus day. This ensures that both, the preovulatory secretion of LH and ovulation, occur at the right time.
Collapse
Affiliation(s)
- Isabel Arrieta-Cruz
- Department of Basic Research, National Institute of Geriatrics. Ministry of Health, Periférico Sur no. 2767, Col. San Jerónimo Lídice, La Magdalena Contreras, C.P. 10200, Ciudad De México, Mexico.
| | - Raúl Librado-Osorio
- Department of Basic Research, National Institute of Geriatrics. Ministry of Health, Periférico Sur no. 2767, Col. San Jerónimo Lídice, La Magdalena Contreras, C.P. 10200, Ciudad De México, Mexico
| | - Angélica Flores
- Reproductive Biology Research Unit, Neuroendocrinology Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, Col. Ejército de Oriente, Campus II, Batalla 5 de mayo s/n esquina, Iztapalapa, Fuerte De Loreto, C.P 09230, Mexico
| | - Luciano Mendoza-Garcés
- Department of Basic Research, National Institute of Geriatrics. Ministry of Health, Periférico Sur no. 2767, Col. San Jerónimo Lídice, La Magdalena Contreras, C.P. 10200, Ciudad De México, Mexico
| | - Roberto Chavira
- Department of Reproductive Biology, National Institute of Medical Sciences and Nutrition Salvador Zubirán, Ministry of Health, Mexico City, Mexico
| | - Mario Cárdenas
- Department of Reproductive Biology, National Institute of Medical Sciences and Nutrition Salvador Zubirán, Ministry of Health, Mexico City, Mexico
| | - Roger Gutiérrez-Juárez
- Department of Biomedical Sciences, School of Medicine, Facultad de Estudios Superiores Zaragoza, UNAM, Mexico City, Mexico
| | - Roberto Domínguez
- Reproductive Biology Research Unit, Neuroendocrinology Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, Col. Ejército de Oriente, Campus II, Batalla 5 de mayo s/n esquina, Iztapalapa, Fuerte De Loreto, C.P 09230, Mexico
| | - María-Esther Cruz
- Reproductive Biology Research Unit, Neuroendocrinology Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, Col. Ejército de Oriente, Campus II, Batalla 5 de mayo s/n esquina, Iztapalapa, Fuerte De Loreto, C.P 09230, Mexico.
| |
Collapse
|
15
|
Araújo J, Cerqueira J, Pires P, Amorim I, Carneiro M, Santos-Silva J, Domínguez R, Bermúdez R, Lorenzo J. Influencia del sistema de producción en la calidad de la canal de cerdos de raza Bísara. ARCH ZOOTEC 2018. [DOI: 10.21071/az.v0i0.3887] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
La utilización de razas locales en sistemas de producción alternativos presenta una serie de ventajas, como la gestión medioambiental, la biodiversidad y la producción agrícola sostenible orientada hacia un mercado de productos de calidad diferenciada, especialmente en áreas desfavorecidas. En este trabajo se estudió la influencia de dos sistemas de producción en la calidad de la canal de cerdos de raza Bísara. La alimentación recibida fue igual en ambos casos. En la fase de crecimiento (98 días) se alimentaron con pienso compuesto comercial, mientras que durante el acabado se les administró pienso compuesto y harina de maíz. Se recogieron datos de peso vivo y canal después de 24h a 4ºC y se calculó el rendimiento de la canal. Se realizaron medidas morfométricas lineales de la media canal derecha, tras 24h post-mortem. El espesor de la grasa dorsal se midió a nivel de la 1ª costilla, la última costilla, en el músculo gluteus medius en el área más espesa de grasa (extremo craneal) y en la de inferior espesura. Teniendo en cuenta los resultados obtenidos, no se observan diferencias significativas en ninguno de los parámetros analizados. El peso de la canal fría (94,23±7,55 kg) y el rendimiento (75,51±1,48%) así como las medidas morfométricas mostraron valores prácticamente coincidentes entre ambos tipos de sistemas de producción. Tampoco se observaron diferencias en el espesor de la grasa dorsal. Las cuatro medidas indican un grado elevado y homogéneo de grasa dorsal, característica frecuentemente constatada en razas de cerdos no mejoradas (razas locales) existentes en todo el mundo.
Collapse
|
16
|
Espinoza JA, Alvarado W, Venegas B, Domínguez R, Morales-Ledesma L. Pharmacological sympathetic denervation prevents the development of polycystic ovarian syndrome in rats injected with estradiol valerate. Reprod Biol Endocrinol 2018; 16:86. [PMID: 30193590 PMCID: PMC6128994 DOI: 10.1186/s12958-018-0400-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 08/21/2018] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND The injection of estradiol valerate in female rats induces polycystic ovary syndrome, which is characterized by polycystic ovaries, anovulation, and hyperandrogenism. These characteristics have been associated with an increase in the ovarian concentration of norepinephrine, which occurs before establishing the polycystic ovary syndrome. The bilateral section of the superior ovarian nerve restores ovarian functions in animals with polycystic ovary syndrome. The superior ovarian nerve provides norepinephrine and vasoactive intestinal peptide to the ovary. An increase in the activity of both neurotransmitters has been associated with the development of polycystic ovary syndrome. The purpose of the present study was analyzed the participation of the noradrenergic nervous system in the development of polycystic ovary syndrome using guanethidine as a pharmacological tool that destroys peripheral noradrenergic nerve fibers. METHODS Fourteen-day old female rats of the CIIZ-V strain were injected with estradiol valerate or vehicle solution. Rats were randomly allotted to one of three guanethidine treatment groups for denervation: 1) guanethidine treatment at age 7 to 27-days, 2) guanethidine treatment at age 14 to 34- days, and 3) guanethidine treatment at age 70 to 90- days. All animals were sacrificed when presenting vaginal oestrus at age 90 to 94-days. The parameters analyzed were the number of ova shed by ovulating animals, the ovulation rate (i.e., the numbers of ovulating animals/the numbers of used animals), the serum concentration of progesterone, testosterone, oestradiol and the immunoreactivity for tyrosine hydroxylase enzyme. All data were analyzed statistically. A p-value of less than 0.05 was considered significant. RESULTS Our results show that the elimination of noradrenergic fibers before the establishment of polycystic ovary syndrome prevents two characteristics of the syndrome, blocking of ovulation and hyperandrogenism. We also found that in animals that have already developed polycystic ovary syndrome, sympathetic denervation restores ovulatory capacity, but it was not as efficient in reducing hyperandrogenism. CONCLUSION The results of the present study suggest that the noradrenergic fibers play a stimulant role in the establishment of polycystic ovary syndrome.
Collapse
Affiliation(s)
- Julieta A. Espinoza
- 0000 0001 2159 0001grid.9486.3Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000 México, DF Mexico
| | - Wendy Alvarado
- 0000 0001 2159 0001grid.9486.3Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000 México, DF Mexico
| | - Berenice Venegas
- 0000 0001 2112 2750grid.411659.eFacultad de Ciencias Biológicas de la Benemérita Universidad Autónoma de Puebla, Blvd. Valsequillo, Av. San Claudio, Edificio 112-A, Cd Universitaria, Col. Jardines de San Manuel, Puebla, Mexico
| | - Roberto Domínguez
- 0000 0001 2159 0001grid.9486.3Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000 México, DF Mexico
| | - Leticia Morales-Ledesma
- 0000 0001 2159 0001grid.9486.3Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000 México, DF Mexico
| |
Collapse
|
17
|
Rosas G, Linares R, Ramírez DA, Vieyra E, Trujillo A, Domínguez R, Morales-Ledesma L. The Neural Signals of the Superior Ovarian Nerve Modulate in an Asymmetric Way the Ovarian Steroidogenic Response to the Vasoactive Intestinal Peptide. Front Physiol 2018; 9:1142. [PMID: 30177887 PMCID: PMC6110177 DOI: 10.3389/fphys.2018.01142] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 07/30/2018] [Indexed: 01/27/2023] Open
Abstract
The superior ovarian nerve (SON) provides neuropeptide-Y, norepinephrine and vasoactive intestinal peptide (VIP) to the ovaries. Ovarian steroidogenesis is modulated by the SON. In the cyclic rat, the acute steroidogenic response to ovarian microinjection of VIP is asymmetric and varies during the estrous cycle. In the present study, we analyze whether the differential effects of VIP in each ovary are modulated by the neural signals arriving through the SON. Cyclic female rats were submitted on diestrus-1, diestrus-2, proestrus, or estrus to a unilateral section of the SON, and immediately afterward, the denervated ovary was either microinjected or not with VIP. Animals were sacrificed 1 h after treatment. The injection of VIP into the left denervated ovary performed on diestrus-1 decreased progesterone levels in comparison with the left SON sectioning group; similar effects were observed on proestrus when VIP was injected into either of the denervated ovaries. Compared to the left SON sectioning group, VIP treatment into the left denervated ovary on diestrus-2 or proestrus decreased testosterone levels, whereas on diestrus-1, proestrus or estrus, the same treatment resulted in higher estradiol levels. Compared to the right SON sectioning group, VIP injected into the right denervated ovary yielded higher testosterone levels on diestrus-1 and estrus and lower testosterone levels on proestrus. VIP injection into the right denervated ovary increased estradiol levels on diestrus-2 or estrus while decreasing them on proestrus. Our results indicate that in the adult cyclic rat, the set neural signals arriving to the ovaries through the SON asymmetrically modulate the role of VIP on steroid hormone secretion, depending on the endocrine status of the animal. The results also support the hypothesis that the left and right ovary respond differently to the VIPergic stimulus.
Collapse
Affiliation(s)
- Gabriela Rosas
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de Mexico, Mexico City, Mexico
| | - Rosa Linares
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de Mexico, Mexico City, Mexico
| | - Deyra A Ramírez
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de Mexico, Mexico City, Mexico
| | - Elizabeth Vieyra
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de Mexico, Mexico City, Mexico
| | - Angélica Trujillo
- Benemérita Universidad Autónoma de Puebla, Facultad de Ciencias Biológicas, Puebla, Mexico
| | - Roberto Domínguez
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de Mexico, Mexico City, Mexico
| | - Leticia Morales-Ledesma
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de Mexico, Mexico City, Mexico
| |
Collapse
|
18
|
Abstract
1. The influence of gender on chemical composition, physicochemical parameters, fatty acid profile, amino acid and mineral composition of turkey breast and thigh meat was studied in order to assess nutrient requirements. 2. Chemical composition showed that only intramuscular fat in breast meat was significantly affected by gender (p < 0.05). The results showed a higher percentage of intramuscular fat in male samples, almost double the amount found in females (0.73% vs. 0.38%). 3.For meat colour parameters, only a* showed different results between sexes, with male samples (breast: p < 0.01; thigh: p < 0.001) having the highest values. 4. Fatty acid profiles showed that medium chain unsaturated fatty acids were the most abundant. The significant differences (p < 0.05) found in both breast and thigh muscle could be linked to a difference in metabolism between males and females. 5.There were higher levels of C16:1n-7 in females (breast: p < 0.001; thigh: p < 0.01) compared with male muscle sample (5.05 vs. 2.67 g/100 g in breast and 4.95 vs. 3.27 g/100 g in thigh). Nutritional indices (n-6/n-3 and thrombogenic index) were more favourable in female samples demonstrating that female turkeys had better fatty acid profile than the others. 6. Turkey meat is an important source of dietary amino acids, and female samples had the highest contents both of essential and non-essential amino acids. Furthermore, gender had a numeric effect (p > 0.05) on amino acid composition. 7. Mineral composition showed that Na, Zn and Fe were the minerals most affected by turkey gender.
Collapse
Affiliation(s)
- F Gálvez
- a COREN, Sociedad Cooperativa Galega , Ourense , Spain
| | - R Domínguez
- b Centro Tecnológico de la Carne de Galicia , Ourense , Spain
| | - M Pateiro
- b Centro Tecnológico de la Carne de Galicia , Ourense , Spain
| | - J Carballo
- c Área de Tecnología de los Alimentos, Facultad de Ciencias de Ourense , Universidad de Vigo , Ourense , Spain
| | - I Tomasevic
- d Department of Animal Source Food Technology , University of Belgrade , Belgrade , Serbia
| | - J M Lorenzo
- b Centro Tecnológico de la Carne de Galicia , Ourense , Spain
| |
Collapse
|
19
|
Lorenzo J, Domínguez R, Franco D, Bermúdez R, Purriños L, Pateiro M. Efecto de la edad de sacrificio en el perfil de ácidos grasos de cerdos de raza Celta. ARCH ZOOTEC 2018. [DOI: 10.21071/az.v67isupplement.3610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
El cerdo Celta es una raza autóctona del noroeste de España, caracterizada por su rusticidad y su adaptación a las condiciones ambientales, por lo que pueden ser criados en régimen extensivo y semi-extensivo. Se estudió el efecto de la edad de sacrificio (12, 14 y 16 meses) en el perfil de ácidos grasos del cerdo Celta. Para este estudio fue usado el músculo longissimus dorsi de 45 machos castrados del genotipo Carballiña. El análisis estadístico revela que los ácidos grasos más abundantes fueron los monoinsaturados, los cuales no mostraron diferencias (P>0.05) entre las edades de sacrificio. El contenido en ácidos grasos saturados incrementó (P
Collapse
|
20
|
Pastelín CF, Rosas NH, Morales-Ledesma L, Linares R, Domínguez R, Morán C. Anatomical organization and neural pathways of the ovarian plexus nerve in rats. J Ovarian Res 2017; 10:18. [PMID: 28292315 PMCID: PMC5351206 DOI: 10.1186/s13048-017-0311-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 03/05/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND In this work, a detailed anatomical description of the ovarian plexus nerve (OPN) in rats is presented. The distribution of the OPN was analyzed by gross anatomy; the features of the superior mesenteric ganglion (SMG) were determined by histological studies; and the localization of the postganglionic neurons innervating the ovary were identified with retrograde tracer. We studied 19 adult cyclic rats of the CIIZ-V strain. RESULTS We found that the right OPN originates from the celiac ganglion, the lumbar ganglion of the sympathetic trunk (LGST) and the SMG. The left OPN originates from the LGST and the anastomotic branch from the splanchnic nerve. The SMG was attached to the inferior vena cava containing sympathetic neurons that innervate the right ovary through the OPN, and which is anatomically single. When the tracer was injected into the right ovary, only the SMG showed positive neurons, while when the tracer was injected into the left ovary, labeled postganglionic neurons were observed in the LGST. CONCLUSIONS This is the first time that it is reported that the SMG is attached to the inferior vena cava and it is directly related to the right ovary. The neural pathways and sympathetic ganglia involved in the communication between the ovaries and the preganglionic neurons are different in the left and right side.
Collapse
Affiliation(s)
- César F Pastelín
- Facultad de Medicina Veterinaria y Zootecnia, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Nora H Rosas
- Centro de Química, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Leticia Morales-Ledesma
- Unidad de Investigación en Biología de la Reproducción, FES Zaragoza, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Rosa Linares
- Unidad de Investigación en Biología de la Reproducción, FES Zaragoza, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Roberto Domínguez
- Unidad de Investigación en Biología de la Reproducción, FES Zaragoza, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Carolina Morán
- Departamento de Biología y Toxicología de la Reproducción, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, México.
| |
Collapse
|
21
|
López-Ramírez YL, López-Ramírez K, Arrieta-Cruz I, Flores A, Mendoza-Garcés L, Librado-Osorio RA, Gutiérrez-Juárez R, Domínguez R, Cruz ME. Muscarinic Receptors Types 1 and 2 in the Preoptic-Anterior Hypothalamic Areas Regulate Ovulation Unequally in the Rat Oestrous Cycle. Int J Endocrinol 2017; 2017:4357080. [PMID: 28396684 PMCID: PMC5370522 DOI: 10.1155/2017/4357080] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Accepted: 02/06/2017] [Indexed: 11/17/2022] Open
Abstract
Muscarinic receptors types 1 (m1AChR) and 2 (m2AChR) in the preoptic and anterior hypothalamus areas (POA-AHA) were counted, and the effects of blocking these receptors on spontaneous ovulation were analysed throughout the rat oestrous cycle. Rats in each phase of the oestrous cycle were assigned to the following experiments: (1) an immunohistochemical study of the number of cells expressing m1AChR or m2AChR in the POA-AHA and (2) analysis of the effects of the unilateral blockade of the m1AChR (pirenzepine, PZP) or m2AChR (methoctramine, MTC) on either side of the POA-AHA on the ovulation rate. The number of m2AChR-immunoreactive cells was significantly higher at 09:00 h on each day of the oestrous cycle in the POA-AHA region, while no changes in the expression profile of m1AChR protein were observed. The ovulation rate in rats treated with PZP on the oestrous day was lower than that in the vehicle group. Animals treated on dioestrous-1 with PZP or MTC had a higher ovulation rate than those in the vehicle group. In contrast, on dioestrous-2, the MTC treatment decreased the ovulation rate. These results suggest that m1AChR or m2AChR in the POA-AHA could participate in the regulation of spontaneous ovulation in rats.
Collapse
Affiliation(s)
- Yadira L. López-Ramírez
- Laboratory of Neuroendocrinology, Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, UNAM, Mexico City, Mexico
| | - Kayro López-Ramírez
- Laboratory of Neuroendocrinology, Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, UNAM, Mexico City, Mexico
| | - Isabel Arrieta-Cruz
- Department of Basic Research, National Institute of Geriatrics, Mexico City, Mexico
| | - Angélica Flores
- Laboratory of Neuroendocrinology, Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, UNAM, Mexico City, Mexico
| | | | | | - Roger Gutiérrez-Juárez
- Division of Endocrinology, Department of Medicine, Albert Einstein College of Medicine, Bronx, New York City, NY, USA
| | - Roberto Domínguez
- Laboratory of Neuroendocrinology, Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, UNAM, Mexico City, Mexico
| | - María Esther Cruz
- Laboratory of Neuroendocrinology, Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, UNAM, Mexico City, Mexico
- *María Esther Cruz:
| |
Collapse
|
22
|
Munekata PES, Domínguez R, Franco D, Bermúdez R, Trindade MA, Lorenzo JM. Effect of natural antioxidants in Spanish salchichón elaborated with encapsulated n-3 long chain fatty acids in konjac glucomannan matrix. Meat Sci 2016; 124:54-60. [PMID: 27835835 DOI: 10.1016/j.meatsci.2016.11.002] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 11/03/2016] [Accepted: 11/04/2016] [Indexed: 12/21/2022]
Abstract
The effect of natural antioxidants on physicochemical properties, lipid and protein oxidation, volatile compounds and free fatty acids (FFA) were determined in Spanish salchichón enriched with n-3 fatty acids encapsulated and stabilized in konjac matrix. Phenolic compounds of beer residue extract (BRE), chestnut leaves extract (CLE) and peanut skin extract (PSE) were also identified and quantified. Five batches of salchichón were prepared: control (CON, without antioxidants), butylated hydroxytoluene (BHT), BRE, CLE and PSE. The main phenolic compounds were catechin and benzoic acid for BRE, gallic acid and catechin for CLE and catechin and protocatechuic acid for PSE. Statistical analysis did not show significant differences on chemical composition among treatments. Reductions in luminosity (P<0.05) and pH (P<0.001) were observed with the CLE batch, whereas the other colour parameters were not affected by the addition of natural antioxidants. Finally, the inclusion of antioxidants (P<0.001) decreased the hexanal content, whereas the FFA content increased by the addition of natural extracts.
Collapse
Affiliation(s)
- P E S Munekata
- Department of Food Engineering, College of Animal Science and Food Engineering, University of São Paulo, 225 Duque de Caxias Norte Ave, Jardim Elite, 13.635-900 Pirassununga, São Paulo, Brazil
| | - R Domínguez
- Centro Tecnológico de la Carne de Galicia, rúa Galicia n° 4, Parque Tecnológico de Galicia, San Cibrao das Viñas 32900, Ourense, Spain
| | - D Franco
- Centro Tecnológico de la Carne de Galicia, rúa Galicia n° 4, Parque Tecnológico de Galicia, San Cibrao das Viñas 32900, Ourense, Spain
| | - R Bermúdez
- Centro Tecnológico de la Carne de Galicia, rúa Galicia n° 4, Parque Tecnológico de Galicia, San Cibrao das Viñas 32900, Ourense, Spain
| | - M A Trindade
- Department of Food Engineering, College of Animal Science and Food Engineering, University of São Paulo, 225 Duque de Caxias Norte Ave, Jardim Elite, 13.635-900 Pirassununga, São Paulo, Brazil
| | - Jose M Lorenzo
- Centro Tecnológico de la Carne de Galicia, rúa Galicia n° 4, Parque Tecnológico de Galicia, San Cibrao das Viñas 32900, Ourense, Spain.
| |
Collapse
|
23
|
Espinosa-Valdez A, Flores A, Arrieta-Cruz I, Cárdenas M, Chavira R, Domínguez R, Cruz ME. The participation of the muscarinic receptors in the preoptic-anterior hypothalamic areas in the regulation of ovulation depends on the ovary. Reprod Biol Endocrinol 2016; 14:75. [PMID: 27809846 PMCID: PMC5095983 DOI: 10.1186/s12958-016-0208-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 10/25/2016] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Muscarinic receptors (mAChRs) of the preoptic and anterior hypothalamus areas (POA-AHA) regulate ovulation in an asymmetric manner during the estrous cycle. The aims of the present study were to analyze the effects of a temporal blockade of mAChRs on either side of the POA-AHA performed in diestrus-2 rats on ovulation, the levels of estradiol, follicle stimulating hormone (FSH) and luteinizing hormone (LH) and the mechanisms involved in changes in ovulation. METHODS Cyclic rats on diestrus-2 day were anesthetized and randomly assigned to the following groups: 1) microinjection of 1 μl of saline or atropine solution (62.5 ng) in the left or right POA-AHA; 2) removal (unilateral ovariectomty, ULO) of the left (L-ULO) or right (R-ULO) ovary, and 3) rats microinjected with atropine into the left or right POA-AHA plus L-ULO or R-ULO. The ovulation rate and the number of ova shed were measured during the predicted estrus, as well as the levels of estradiol, FSH and LH during the predicted proestrus and the effects of injecting synthetic LH-releasing hormone (LHRH) or estradiol benzoate (EB). RESULTS Atropine in the left POA-AHA decreased both the ovulation rate and estradiol and LH levels on the afternoon of proestrus, also LHRH or EB injection restored ovulation. L- or R-ULO resulted in a lower ovulation rate and smaller number of ova shed, and only injection of LHRH restored ovulation. EB injection at diestrus-2 restored ovulation in animals with L-ULO only. The levels of estradiol, FSH and LH in rats with L-ULO were higher than in animals with unilateral laparotomy. In the group microinjected with atropine in the left POA-AHA, ovulation was similar to that in ULO rats. In contrast, atropine in the right POA-AHA of ULO rats blocked ovulation, an action that was restored by either LHRH or EB injection. CONCLUSIONS These results indicated that the removal of a single ovary at noon on diestrus-2 day perturbed the neuronal pathways regulating LH secretion, which was mediated by the muscarinic system connecting the right POA-AHA and the ovaries.
Collapse
Affiliation(s)
- Adriana Espinosa-Valdez
- Biology of Reproduction Research Unit, Laboratory of Neuroendocrinology, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP 15000 Mexico City, Mexico
| | - Angélica Flores
- Biology of Reproduction Research Unit, Laboratory of Neuroendocrinology, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP 15000 Mexico City, Mexico
| | - Isabel Arrieta-Cruz
- Department of Basic Research, National Institute of Geriatrics, México City, Mexico
| | - Mario Cárdenas
- Instituto Nacional de Ciencias Médicas y Nutrición “Salvador Zubirán”, México City, Mexico
| | - Roberto Chavira
- Instituto Nacional de Ciencias Médicas y Nutrición “Salvador Zubirán”, México City, Mexico
| | - Roberto Domínguez
- Biology of Reproduction Research Unit, Laboratory of Neuroendocrinology, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP 15000 Mexico City, Mexico
| | - María Esther Cruz
- Biology of Reproduction Research Unit, Laboratory of Neuroendocrinology, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP 15000 Mexico City, Mexico
| |
Collapse
|
24
|
Ramírez DA, Vieyra E, González AI, Morán C, Domínguez R, Morales-Ledesma L. Both the Suprachiasmatic Nucleus and the Superior Ovarian Nerve Contribute to the Processes of Ovulation and Steroid Hormone Secretion on Proestrus. Reprod Sci 2016; 24:844-855. [PMID: 27688242 DOI: 10.1177/1933719116670307] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The aims of the present study were to analyze if the superior ovarian nerve (SON) plays a role in the neural signals from suprachiasmatic nucleus (SCN) that lead to ovulation and ovarian steroids secretion on proestrus day. Rats on proestrus day were treated at 11.00 to 11.30 or 17.00 to 17.30 hours with 1 of the 3 experimental procedures (1) unilateral or bilateral SON sectioning, (2) unilateral or bilateral injury to the SCN, or (3) unilateral injury to the SCN followed by unilateral sectioning of the SON ipsilateral to the treated SCN. Treatments were evaluated 24 hours after surgical procedures. Compared to laparotomized animals, right or bilateral SON sectioning treatment at 17.00 hours resulted in lower ovulation rates and number of ova shed by the right ovary. The ovaries of nonovulating animals showed early follicular luteinization signs and trapped ova. Bilateral SCN injury treatment at 11.00 hours resulted in anovulation; whereas right SCN injury treatment, with or without right SON sectioning, resulted in a lower number of ova shed. Injecting luteinizing hormone-releasing hormone to animals with bilateral SCN injury restored ovulation. In rats with unilateral or bilateral SON sectioning, or with injury to the SCN with or without unilateral sectioning of the SON, the effects on hormone levels depended of the hormone studied and the time of day treatment was performed. The present results suggest that on proestrus day, the role of the right or both SON in ovulation and steroid hormone secretion regulation takes place through different neuroendocrine mechanisms from SCN.
Collapse
Affiliation(s)
- Deyra A Ramírez
- 1 Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, México DF, Mexico
| | - Elizabeth Vieyra
- 1 Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, México DF, Mexico
| | - Aldo I González
- 1 Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, México DF, Mexico
| | - Carolina Morán
- 2 Department of Biology and Toxicology of Reproduction, Benemérita Universidad Autónoma de Puebla, San Manuel, Puebla, Mexico
| | - Roberto Domínguez
- 1 Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, México DF, Mexico
| | - Leticia Morales-Ledesma
- 1 Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, México DF, Mexico
| |
Collapse
|
25
|
Vieyra E, Ramírez DA, Lagunas N, Cárdenas M, Chavira R, Damián-Matsumura P, Trujillo A, Domínguez R, Morales-Ledesma L. Unilaterally blocking the muscarinic receptors in the suprachiasmatic nucleus in proestrus rats prevents pre-ovulatory LH secretion and ovulation. Reprod Biol Endocrinol 2016; 14:34. [PMID: 27306649 PMCID: PMC4910191 DOI: 10.1186/s12958-016-0168-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Accepted: 06/11/2016] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND The suprachiasmatic nucleus (SCN) and the cholinergic system of various regions of the hypothalamus participate in the regulation of gonadotropin-releasing hormone (GnRH) and gonadotropin secretion, which are necessary for the occurrence of ovulation. In the present study, our goal was to analyse the effects of unilaterally blocking the muscarinic receptors in the SCN on ovulation and steroid secretion. METHODS Cyclic rats were randomly allotted to one of the experimental groups. Groups of 8-14 rats were anaesthetized and microinjected with 0.3 μl of saline or a solution of atropine (62.5 ng in 0.3 μl of saline) into the left or right SCN at 09.00 or 19.00 h during diestrus-1 or on the proestrus day. The rats were euthanized on the predicted day of oestrus, and evaluated ovulation and levels of progesterone and oestradiol. Other groups of 10 rats were microinjected with atropine into the left or right SCNs at 09.00 h on the proestrus day, were euthanized eight h later, and luteinizing hormone (LH) was measured. RESULTS At 09.00 or 19.00 h during diestrus-1, atropine microinjections into the SCNs on either side did not modify ovulation. The atropine microinjections performed at 09.00 h of proestrus into either side of the SCN blocked ovulation (right SCN: 1/9 ovulated vs. 9/10 in the saline group; left SCN: 8/14 ovulated vs. 10/10 in the saline group). The LH levels at 17.00 h in the rats that were microinjected with atropine at 09.00 h of proestrus were lower than those of the controls. In the non-ovulating atropine-treated rats, the injection of synthetic LH-releasing hormone (LHRH) restored ovulation. Atropine treatment at 19.00 h of proestrus on either side of the SCN did not modify ovulation, while the progesterone and oestradiol levels were lower. CONCLUSION Based on the present results, we suggest that the cholinergic neural information arriving on either side of the SCN is necessary for the pre-ovulatory secretion of LH to induce ovulation. Additionally, the regulation of progesterone and oestradiol secretion by the cholinergic innervation of the SCN varies with the time of day, the day of the cycle, and the affected SCN.
Collapse
Affiliation(s)
- Elizabeth Vieyra
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP 15000 Ciudad de México, México
| | - Deyra A. Ramírez
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP 15000 Ciudad de México, México
| | - Noé Lagunas
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP 15000 Ciudad de México, México
| | - Mario Cárdenas
- Instituto Nacional de Ciencias Médicas y Nutrición “Salvador Zubirán”, Ciudad de México, México
| | - Roberto Chavira
- Instituto Nacional de Ciencias Médicas y Nutrición “Salvador Zubirán”, Ciudad de México, México
| | | | - Angélica Trujillo
- Benemérita Universidad Autónoma de Puebla, Escuela de Biología, Edificio 112A Ciudad Universitaria, CP 72570 Puebla, Puebla México
| | - Roberto Domínguez
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP 15000 Ciudad de México, México
| | - Leticia Morales-Ledesma
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP 15000 Ciudad de México, México
| |
Collapse
|
26
|
Romero-Reyes J, Cárdenas M, Damián-Matsumura P, Domínguez R, Ayala ME. Corrigendum to "Inhibition of serotonin reuptake in the prepubertal rat ovary by fluoxetine and effects on ovarian functions" [Reprod. Toxicol. 59 (2016) 80-88]. Reprod Toxicol 2016; 61:195. [PMID: 27269257 DOI: 10.1016/j.reprotox.2016.04.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Jessica Romero-Reyes
- Unidad de Investigación en Biología de la Reproducción, Laboratorio de Pubertad, Facultad de Estudios Superiores Zaragoza, UNAM, Iztapalapa, CP 09230 México D.F., Mexico
| | - Mario Cárdenas
- Laboratorio de Hormonas Proteicas, Instituto Nacional de Ciencias Médicas y de Nutrición Salvador Zubirán, Tlalpan, CP 14080 México D.F., Mexico
| | - Pablo Damián-Matsumura
- Departamento de Biología de la Reproducción, UAM Iztapalapa, CP 09340 México D.F., Mexico
| | - Roberto Domínguez
- Unidad de Investigación en Biología de la Reproducción, Laboratorio de Pubertad, Facultad de Estudios Superiores Zaragoza, UNAM, Iztapalapa, CP 09230 México D.F., Mexico
| | - María Elena Ayala
- Unidad de Investigación en Biología de la Reproducción, Laboratorio de Pubertad, Facultad de Estudios Superiores Zaragoza, UNAM, Iztapalapa, CP 09230 México D.F., Mexico.
| |
Collapse
|
27
|
Lorenzo JM, Domínguez R, Agregán R, Gonçalves A. Effect of fat replacement by olive oil on the physico-chemical properties, fatty acids, cholesterol and tocopherol content of pâté. Grasas y Aceites 2016. [DOI: 10.3989/gya.0629152] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
28
|
Lorenzo JM, Domínguez R, Munekata PE, Cittadini A. Effect of the partial NaCl substitution by other chloride salts on the volatile profile during the ripening of dry-cured lacón. Grasas y Aceites 2016. [DOI: 10.3989/gya.0505152] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
29
|
Lorenzo JM, De Jesús MC, Domínguez R, Cantalapiedra J, Iglesias A. Effect of the amount of chestnuts in the diet of Celta pigs on the fatty acid profile of dry-cured lacon. Grasas y Aceites 2016. [DOI: 10.3989/gya.0492151] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
30
|
Romero-Reyes J, Cárdenas M, Damián-Matsumura P, Domínguez R, Ayala ME. Inhibition of serotonin reuptake in the prepubertal rat ovary by fluoxetine and effects on ovarian functions. Reprod Toxicol 2016; 59:80-8. [DOI: 10.1016/j.reprotox.2015.12.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 11/27/2015] [Accepted: 12/24/2015] [Indexed: 10/22/2022]
|
31
|
Ayala ME, Velázquez DE, Mendoza JL, Monroy J, Domínguez R, Cárdenas M, Aragón A. Dorsal and medial raphe nuclei participate differentially in reproductive functions of the male rat. Reprod Biol Endocrinol 2015; 13:132. [PMID: 26643556 PMCID: PMC4672486 DOI: 10.1186/s12958-015-0130-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 09/18/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Innervation of the hypothalamus and median eminence arise from the dorsal and medial raphe nuclei (DRN and MRN, respectively). The hypothalamus regulates the secretion of gonadotropins, which in turn regulate the reproductive function of males and females. However, it is not known the role of raphe nuclei in male reproductive function. Our goal was to investigate the role of the DRN and MRN in the regulation of the testicular function and secretion of gonadotropins in prepubertal rats. METHODS Dihydroxytryptamine (5,6-DHT) in ascorbic acid was used to chemically lesion the DRN or MRN. Rats were treated at 30 days-of-age and sacrificed at 45 or 65 days-of-age. Sham-treated controls were injected with ascorbic acid only. Negative controls were untreated rats. The damage induced by the 5,6-DHT was monitored in coronal serial sections of DRN and MRN; only the animals in which lesion of the DRN or MRN was detected were included in this study. As output parameters, we measured the concentrations of noradrenaline (NA), dopamine (DA) and serotonin (5-HT) in the anterior (AH) and medial (MH) hypothalamus by high performance liquid chromatography (HPLC); whereas, circulating concentrations of gonadotropins and sexual steroids were measured by radioimmunoassay. Seminiferous epithelium and sperm quality were also evaluated. RESULTS Lesion of DRN or MRN does not induced changes in concentrations of LH, progesterone, and testosterone. Compared with the control group, the sham or lesion of the DRN or MRN did not modify noradrenaline or dopamine concentrations in the AH and MH at 45 or 65 days of age. Meanwhile, serotonin concentrations decreased significantly in lesioned rats. Lesion of DRN induced significantly lower concentrations of FSH regardless of age; similar lesion in the MRN had no impact on FSH levels. Sperm concentration and motility were significantly decreased in the same animals. The lesion of the MRN does not induced changes in the seminiferous epithelium or gonadotropin levels. Our results suggest that raphe nuclei regulate differentially the male reproductive functions. CONCLUSIONS The DRN but not the MRN regulates the secretion of gonadotropins and testicular function.
Collapse
Affiliation(s)
- María E Ayala
- Unidad de Investigación en Biología de la Reproducción, Laboratorio de Pubertad, Facultad de Estudios Superiores Zaragoza, UNAM. AP 9-020, CP 15000, Distrito Federal, México.
| | - Diana E Velázquez
- Unidad de Investigación en Biología de la Reproducción, Laboratorio de Pubertad, Facultad de Estudios Superiores Zaragoza, UNAM. AP 9-020, CP 15000, Distrito Federal, México.
| | - Juan L Mendoza
- Unidad de Investigación en Biología de la Reproducción, Laboratorio de Pubertad, Facultad de Estudios Superiores Zaragoza, UNAM. AP 9-020, CP 15000, Distrito Federal, México.
| | - Juana Monroy
- Unidad de Investigación en Biología de la Reproducción, Laboratorio de Pubertad, Facultad de Estudios Superiores Zaragoza, UNAM. AP 9-020, CP 15000, Distrito Federal, México.
| | - Roberto Domínguez
- Unidad de Investigación en Biología de la Reproducción, Laboratorio de Pubertad, Facultad de Estudios Superiores Zaragoza, UNAM. AP 9-020, CP 15000, Distrito Federal, México.
| | - Mario Cárdenas
- Laboratorio de Hormonas Proteicas, Instituto de Ciencias Médicas y de la Salud Salvador Subirán, Tlalpan, CP 14000, México, D.F., México.
| | - Andrés Aragón
- Ciencia, Tecnología e Informática Aplicadas a la Reproducción S A, Texcoco, CP 56200, Estado de México, México.
- Instituto Tecnológico del Altiplano de Tlaxcala, San Diego Xocoyucan, CP 90122, Tlaxcala, México.
| |
Collapse
|
32
|
Venegas-Meneses B, Padilla JF, Juárez CE, Morán JL, Morán C, Rosas-Murrieta NH, Handal A, Domínguez R. Effects of ovarian dopaminergic receptors on ovulation. Endocrine 2015; 50:783-96. [PMID: 26024972 DOI: 10.1007/s12020-015-0636-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 05/20/2015] [Indexed: 11/29/2022]
Abstract
Hormonal and neural signals regulate the ovarian follicular development. The present study's hypothesis is that the blockade of ovarian dopamine receptors locally will affect follicle development and ovulation. Groups of adult 4-day cyclic rats of the CII-ZV strain on estrus, diestrus-1, diestrus-2, or proestrus day were injected with vehicle, haloperidol (DA2 > DA1 blocker), sulpiride (DA2 blocker), or SCH-23390 (DA1 blocker) into the bursa of both ovaries at 08:00, 13:00, or 20:00 h. Animals were sacrificed the following predicted estrus day. The following treatments blocked ovulation: injecting haloperidol to rats on estrus or diestrus-1 at 8:00, 13:00, or 20:00 h and to rats on diestrus-2 at 08:00, or 20:00 h; injecting SCH-23390 to rats on diestrus-1 at 8:00, 13:00, or 20:00 h; injecting sulpiride to rats on estrus at 20:00 h, diestrus-1 at 08:00, 13:00, or 20:00 h and to rats on diestrus-2 at 08:00 h. In rats treated with any of the dopamine antagonists that blocked ovulation, injecting GnRH at 14.00 h on the next predicted proestrus day restored ovulation. Injecting estradiol benzoate at 14.00 h of the next predicted diestrus-2 restored ovulation in some animals treated with haloperidol on estrus or diestrus-2 and was ineffective in rats treated on diestrus-1. In rats treated with sulpiride or SCH-23390 ovulation occurred in most animals (SCH-23390: 6/8; SPD: 9/12). Present results suggest that dopamine ovarian receptors' participation in regulating follicular development and ovulation varies along the estrus cycle, with their most prominent activity occurring on diestrus-1.
Collapse
Affiliation(s)
- Berenice Venegas-Meneses
- Departamento de Biología y Toxicología de la Reproducción, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, CP.72570, Puebla, Mexico.
| | - José Francisco Padilla
- Departamento de Biología y Toxicología de la Reproducción, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, CP.72570, Puebla, Mexico
| | - Claudia Elvira Juárez
- Departamento de Biología y Toxicología de la Reproducción, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, CP.72570, Puebla, Mexico
| | - José Luis Morán
- Departamento de Biología y Toxicología de la Reproducción, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, CP.72570, Puebla, Mexico
| | - Carolina Morán
- Departamento de Biología y Toxicología de la Reproducción, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, CP.72570, Puebla, Mexico
| | - Nora Hilda Rosas-Murrieta
- Laboratorio de Bioquímica y Biología Molecular, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Anabella Handal
- Departamento de Biología y Toxicología de la Reproducción, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, CP.72570, Puebla, Mexico
| | - Roberto Domínguez
- Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, UNAM, Mexico, D.F., Mexico
| |
Collapse
|
33
|
Rosas G, Ramírez MI, Linares R, Trujillo A, Domínguez R, Morales-Ledesma L. Asymmetric steroidogenic response by the ovaries to the vasoactive intestinal peptide. Endocrine 2015; 48:968-77. [PMID: 25331816 DOI: 10.1007/s12020-014-0449-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Accepted: 10/07/2014] [Indexed: 12/01/2022]
Abstract
In vitro the vasoactive intestinal peptide (VIP) stimulates progesterone, androgens, and estradiol secretion, and the effects are time-dependent. The present study analyzed the acute (1 h) and sub-acute (24 h) effects of unilateral injection of VIP into the ovarian bursa on each day of the estrous cycle on progesterone, testosterone, and estradiol serum levels. Cyclic 60-day-old virgin female rats on diestrus-1, diestrus-2, proestrus, or estrus were injected with saline or VIP 10(-6) M into the left or right ovarian bursa. One hour after saline injection on each day of estrus cycle, progesterone levels were higher than in control animals. The acute effects of saline solution on testosterone and estradiol levels were asymmetric and varied during the estrous cycle. In comparison with saline groups, the effects of VIPergic stimulation on progesterone, testosterone, and estradiol serum levels depend on the time elapsed between treatment and autopsy and vary during the estrous cycle. An acute asymmetric response from the ovaries to the VIP was observed at diestrus-1, diestrus-2, and proestrus on progesterone and estradiol levels. The asymmetries on testosterone levels were observed at diestrus-1, diestrus-2, and estrus days. The present results suggest that in the cyclic rat, each ovary has different sensitivities to VIPergic stimulation which depends on the endocrine status of the animal.
Collapse
Affiliation(s)
- Gabriela Rosas
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP 15000, Mexico, D.F., Mexico
| | | | | | | | | | | |
Collapse
|
34
|
Trujillo A, Morales L, Domínguez R. The effects of sensorial denervation on the ovarian function, by the local administration of capsaicin, depend on the day of the oestrous cycle when the treatment was performed. Endocrine 2015; 48:321-8. [PMID: 24861475 DOI: 10.1007/s12020-014-0299-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Accepted: 05/09/2014] [Indexed: 10/25/2022]
Abstract
There is evidence that sensory innervation plays a role in the regulation of puberty. The present study investigates the effects of functional sensorial desensitisation induced by capsaicin administration to adult female rats in the days of diestrus 1, diestrus 2, pro-oestrus or oestrus on ovulation and serum oestradiol and progesterone concentration. The animals were allotted at random to one of the following groups: (1) animals with capsaicin administration into the bursa ovarica (local administration) (2) animals with vehicle administration into the bursa ovarica and (3) untreated animals group. The animals treated were killed on the day of oestrus after three consecutive 4-day oestrous cycles. No differences were observed in oestrous cyclicity or the average number of ova shed between the sensorial desensitisation animals and the vehicle-treated groups. Capsaicin administration resulted in a significant increase in the intra-ovarian noradrenaline levels in the day of diestrus 2 and pro-oestrus. Serum oestradiol and progesterone concentrations were different, depending on the day of the oestrous cycle in which the treatment was performed. These results suggest that in adult normal female rats, ovarian sensorial innervations participate together with the sympathetic innervation in the ovarian function regulating the hormone secretion and this participation varies along the oestrous cycle.
Collapse
Affiliation(s)
- Angélica Trujillo
- Escuela de Biología, Benemérita Universidad Autónoma de Puebla, Edificio 112A Ciudad Universitaria, CP 72570, Puebla, Puebla, Mexico,
| | | | | |
Collapse
|
35
|
Lorenzo JM, Fonseca S, Gómez M, Domínguez R. Physicochemical and sensory properties of Celta dry-ripened “salchichón” as affected by fat content. Grasas y Aceites 2015. [DOI: 10.3989/gya.0709142] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
36
|
Cruz ME, Flores A, Domínguez R. The cholinergic system of the preoptic-anterior hypothalamic areas regulates the ovarian follicular population in an asymmetric way. Endocrine 2014; 47:913-22. [PMID: 24748224 DOI: 10.1007/s12020-014-0266-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Accepted: 04/02/2014] [Indexed: 10/25/2022]
Abstract
Atropine implants in the preoptic-anterior hypothalamic areas (POA-AHA) block ovulation. The blocking effects depend on the side of POA-AHA and the day of the estrous cycle in which the implants are inserted. Since ovulation is the result of the growth and differentiation of ovarian follicles, the purpose of this study was to analyze the changes in follicular and atresia population in the ovaries of non-ovulating rats resulting from the unilateral atropine implants in the POA-AHA. Groups of cyclic rats were implanted with atropine or cholesterol (sham treatment group) in the left (diestrus-1, diestrus-2) or the right side (estrus, diestrus-1) of the POA-AHA. The animals were sacrificed on the expected proestrus or estrus day, and the follicular population was counted and the follicles measured in both ovaries. Atropine implants inserted in the left POA-AHA on diestrus-2 resulted in lower follicular growth and atresia in the ipsilateral ovary (left one). No apparent effects were observed in the right ovary. Atropine implants inserted in the right POA-AHA on estrus day resulted in fewer numbers of small follicles in the ipsilateral ovary (right) and a greater number of pre-ovulatory ones. Present results suggest that acetylcholine, via muscarinic receptors of the POA-AHA, regulates ovarian follicular fate in an asymmetric way, and that its actions fluctuate during the estrous cycle. In addition, each ovary seems to respond differently to the POA-AHA's muscarinic signal surge on estrus and diestrus-2 days.
Collapse
Affiliation(s)
- María Esther Cruz
- Neuroendocrinology Laboratory, Biology of Reproduction Research Unit, Facultad de Estudios Superiores Zaragoza, UNAM, A. P. 9-020, 15000, Mexico, DF, Mexico,
| | | | | |
Collapse
|
37
|
Franco I, Domínguez R, Martínez S, Carballo J. Fatty acid profile and cholesterol and retinol contents in different locations of Celta pig breed. Grasas y Aceites 2014. [DOI: 10.3989/gya.0115141] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
38
|
Lorenzo JM, Domínguez R. Effect of genotype on fatty acid composition of intramuscular and subcutaneous fat of Celta pig breed. Grasas y Aceites 2014. [DOI: 10.3989/gya.0234141] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
39
|
Quiróz U, Morales-Ledesma L, Morán C, Trujillo A, Domínguez R. Lack of sensorial innervation in the newborn female rats affects the activity of hypothalamic monoaminergic system and steroid hormone secretion during puberty. Endocrine 2014; 46:309-17. [PMID: 24122121 DOI: 10.1007/s12020-013-0055-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Accepted: 09/04/2013] [Indexed: 11/30/2022]
Abstract
There is evidence that sensory innervation plays a role regulating ovarian functions, including fertility.Since sensory denervation by means of capsaicin in newborn female rats results in a lower response togonadotropins, the present study analyzed the effects that sensory denervation by means of capsaicin in neonatal rats has on the concentration of monoamines in the anterior(AH) and medium (MH) hypothalamus, and on steroid hormone levels in serum. Groups of newborn female rats were injected subcutaneously with capsaicin and killed at 10, 20, and 30 days of age and on the first vaginal estrous.The concentrations of noradrenaline, dopamine, serotonin(5-HT), and their metabolites in the AH and MH were measured using HPLC, and the levels of estradiol (E),progesterone (P), testosterone (T), FSH, and luteinizing hormone using radioimmunoanalysis. The results show thatat 20 days of age, capsaicin-treated rats have lowernoradrenergic and serotonergic activities in the AH, and that the dopaminergic activity was lower in the MH. These results suggest that the sensorial system connections within the monoaminergic systems of the AH and MH are different.Capsaicin-treated animals had lower T, E, and P levels than in the control group, suggesting that the lower activity in the AH monoaminergic system and lower hormonesecretion could be explained by the blockade of information mediated by the sensory innervation (probably substance P), mainly between the ovary and the AH.
Collapse
|
40
|
Cruz ME, Olvera E, Pérez MJ, Min EI, Flores A, Cárdenas M, Chavira R, Domínguez R. Effects of unilaterally microinjecting ethanol in the preoptic-anterior hypothalamic areas of rats on ovulation. Alcohol Clin Exp Res 2014; 38:1611-21. [PMID: 24821623 DOI: 10.1111/acer.12399] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Accepted: 02/06/2014] [Indexed: 12/17/2022]
Abstract
BACKGROUND Intragastric or intraperitoneal ethanol (EtOH) treatment inhibits reproductive functions in females and male rats. The area of the hypothalamus where these effects take place is unknown. As the participations of the preoptic-anterior hypothalamic area (POA-AHA) in regulating ovulation is asymmetric, this study aims to analyze the effects on 17β-estradiol(E2 ), progesterone, luteinizing hormone (LH), follicle-stimulating hormone (FSH) serum levels, the messenger ribonucleic acid (mRNA) expression of estrogen receptor alpha (ERα) and beta (ERβ), and ovulation resulting from unilaterally microinjecting water or an EtOH solution into either side of the POA-AHA. METHODS The treatment consisted of microinjecting a 8.6 μM EtOH solution into either side of the POA-AHA. The study was performed on groups of adult cyclic rats at 09.00 hours on diestrus-1, and sacrificed on diestrus-2 at 13.00, on proestrus at 09.00 or 17.00 or on estrus at 09.00 hours. Ovulation rates were assessed in rats sacrificed on estrus. Hormonal serum levels were measured using radioimmunoassay, and as a function of ERα and ERβ mRNA expression in each side of the POA-AHA by reverse transcriptase polymerase chain reaction. RESULTS EtOH treatment blocked ovulation and the preovulatory release of LH, and lowered E2 levels. Irrespective of the treated POA-AHA side, ERα mRNA expression was consistently lower in the left POA-AHA and higher on the right. EtOH treatment in the left POA-AHA decreased FSH serum levels and lowered ERβ mRNA expression. In turn, EtOH treatment on the right POA-AHA resulted in higher FSH levels and ERβ mRNA expression. CONCLUSIONS The present results show that EtOH blocks the preovulatory surge of LH on the POA-AHA. The effects of EtOH treatment of preovulatory FSH surge on the POA-AHA are asymmetric (stimulative on the right and inhibiting in the left). The effects of EtOH treatment on preovulatory LH and FSH surge could be explained by the inhibition of ERα and ERβ mRNA expression, respectively.
Collapse
Affiliation(s)
- María-Esther Cruz
- Laboratory of Neuroendocrinology , Biology of Reproduction Research Unit, FES Zaragoza, U.N.A.M, México City, Mexico
| | | | | | | | | | | | | | | |
Collapse
|
41
|
Abstract
La nutrición cobra una enorme importancia a la hora de asegurar un estado de salud y un rendimiento deportivo óptimo. Uno de los principales objetivos irá encaminado a asegurar un adecuado estado de las reservas corporales de hierro, dado que la deficiencia de hierro es la más frecuente y a que dicho elemento forma parte constituyente de la hemoglobina y mioglobina. Existe una relación directa entre los niveles de hemoglobina y el VO2máx, principal factor limitante del rendimiento de resistencia. Recientemente se ha descubierto una nueva hormona (hepcidina), cuyo efecto principal es la de actuar como regulador negativo en la absorción del hierro, al degradar la ferroportina. El objetivo del presente estudio ha sido el de analizar los distintos trabajos que han estudiado la respuesta de la hepcidina al ejercicio como requisito para poder dar pautas que permitan regular los niveles de hepcidina en el deportista, previniendo posibles estados ferropénicos.
Collapse
|
42
|
Linares R, Hernández D, Morán C, Chavira R, Cárdenas M, Domínguez R, Morales-Ledesma L. Unilateral or bilateral vagotomy induces ovulation in both ovaries of rats with polycystic ovarian syndrome. Reprod Biol Endocrinol 2013; 11:68. [PMID: 23866168 PMCID: PMC3722028 DOI: 10.1186/1477-7827-11-68] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Accepted: 07/14/2013] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Injecting estradiol valerate (EV) to pre-pubertal or adult female rat results in effects similar to those observed in women with polycystic ovarian syndrome (PCOS). One of the mechanisms involved in PCOS development is the hyperactivity of the sympathetic nervous system. In EV-induced PCOS rats, the unilateral sectioning of the superior ovarian nerve (SON) restores ovulation of the innervated ovary. This suggests that, in addition to the sympathetic innervation, other neural mechanisms are involved in the development/maintenance of PCOS. The aims of present study were analyze if the vagus nerve is one of the neural pathways participating in PCOS development. METHODS Ten-day old rats were injected with EV dissolved in corn oil. At 24-days of age sham-surgery, unilateral, or bilateral sectioning of the vagus nerve (vagotomy) was performed on these rats. The animals were sacrificed at 90-92 days of age, when they presented vaginal estrous preceded by a pro-estrus smear. RESULTS In EV-induced PCOS rats, unilateral or bilateral vagotomy restored ovulation in both ovaries. Follicle-stimulating hormone (FSH) levels in PCOS rats with unilateral or bilateral vagotomy were lower than in control rats. CONCLUSIONS This result suggests that in EV-induced PCOS rats the vagus nerve is a neural pathway participating in maintaining PCOS. The vagus nerve innervates the ovaries directly and indirectly through its synapsis in the celiac-superior-mesenteric ganglion, where the somas of neurons originating in the SON are located. Then, it is possible that vagotomy effects in EV-induced PCOS rats may be explained as a lack of communication between the central nervous system and the ovaries.
Collapse
Affiliation(s)
- Rosa Linares
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000, México, DF, México
| | - Denisse Hernández
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000, México, DF, México
| | - Carolina Morán
- Departament of Biology and Toxicology of Reproduction, Science Institute, Benemérita Universidad Autónoma de Puebla, Puebla, México CP 72000
| | - Roberto Chavira
- Instituto Nacional de Ciencias Médicas y Nutrición “Salvador Zubirán”, México, DF, México
| | - Mario Cárdenas
- Instituto Nacional de Ciencias Médicas y Nutrición “Salvador Zubirán”, México, DF, México
| | - Roberto Domínguez
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000, México, DF, México
| | - Leticia Morales-Ledesma
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM AP 9-020, CP 15000, México, DF, México
| |
Collapse
|
43
|
Moran MJ, Ayala ME, Gallegos E, Romero J, Chavira R, Damián-Matsumura P, Domínguez R. Effects of systemic administration or intrabursal injection of serotonin on puberty, first ovulation and follicular development in rats. Reprod Fertil Dev 2013; 25:1105-14. [PMID: 23174218 DOI: 10.1071/rd12253] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Accepted: 10/07/2012] [Indexed: 11/23/2022] Open
Abstract
To elucidate the role of serotonin in the onset of puberty, the effects of both systemic and in-ovarian bursa administration of serotonin on the neuroendocrine mechanism that modulates the onset of puberty, follicular development and first ovulation were evaluated. Two experiments were carried out. For the first, 25 or 37.5 mg kg–1 of bodyweight of serotonin creatinine sulfate was administered by a subcutaneous route to 30-day-old female rats. In the second experiment, serotonin creatinine sulfate was administered directly into the ovarian bursa of 34-day-old female rats. Systemic administration of 25 or 37.5 mg kg–1 of serotonin creatinine sulfate induced a delay in the ages of vaginal opening and first vaginal oestrus, a decrease in the number of ovulating animals, and serum concentrations of FSH, LH, oestradiol and progesterone. An increase in the number of Class 3 (>500 μm) and atretic follicles was observed in the ovaries of these animals. The administration of serotonin creatinine sulfate in the ovarian bursa did not modify the onset of puberty and ovulation, but a reduced serum concentration of oestradiol was observed. Our results suggest that serotonin acts on the components of the hypothalamus–hypophysis–ovary axis by modulating follicular development, ovarian functions and the onset of puberty.
Collapse
Affiliation(s)
- M J Moran
- Unidad de Investigación en Biología de la Reproducción, Laboratorio de Pubertad. Facultad de Estudios Superiores Zaragoza, UNAM. AP 9-020, CP 15000, México D.F., México
| | | | | | | | | | | | | |
Collapse
|
44
|
Morales-Ledesma L, Vieyra E, Ramírez DA, Trujillo A, Chavira R, Cárdenas M, Domínguez R. Effects on steroid hormones secretion resulting from the acute stimulation of sectioning the superior ovarian nerve to pre-pubertal rats. Reprod Biol Endocrinol 2012; 10:88. [PMID: 23110668 PMCID: PMC3520866 DOI: 10.1186/1477-7827-10-88] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Accepted: 10/21/2012] [Indexed: 01/04/2023] Open
Abstract
In the adult rat, neural signals arriving to the ovary via the superior ovarian nerve (SON) modulate progesterone (P4), testosterone (T) and estradiol (E2) secretion. The aims of the present study were to analyze if the SON in the pre-pubertal rat also modulates ovarian hormone secretion and the release of follicle stimulating hormone (FSH) and luteinizing (LH) hormone. P4, T, E2, FSH and LH serum levels were measured 30 or 60 minutes after sectioning the SON of pre-pubertal female rats. Our results indicate that the effects on hormone levels resulting from unilaterally or bilaterally sectioning the SON depends on the analyzed hormone, and the time lapse between surgery and autopsy, and that the treatment yielded asymmetric results. The results also suggest that in the pre-pubertal rat the neural signals arriving to the ovaries via the SON regulate the enzymes participating in P4, T and E2 synthesis in a non-parallel way, indicating that the mechanisms regulating the synthesis of each hormone are not regulated by the same signals. Also, that the changes in the steroids hormones are not explained exclusively by the modifications in gonadotropins secretion. The observed differences in hormone levels between rats sacrificed 30 and 60 min after surgery reflect the onset of the compensatory systems regulating hormones secretion.
Collapse
Affiliation(s)
- Leticia Morales-Ledesma
- Biology of Reproduction Research Unit. Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM. AP 9-020, CP15000, México, D.F, Mexico
| | - Elizabeth Vieyra
- Biology of Reproduction Research Unit. Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM. AP 9-020, CP15000, México, D.F, Mexico
| | - Deyra A Ramírez
- Biology of Reproduction Research Unit. Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM. AP 9-020, CP15000, México, D.F, Mexico
| | - Angélica Trujillo
- Escuela de Biología, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Roberto Chavira
- Instituto Nacional de Ciencias Médicas y Nutrición "Salvador Zubirán", México, D.F, México
| | - Mario Cárdenas
- Instituto Nacional de Ciencias Médicas y Nutrición "Salvador Zubirán", México, D.F, México
| | - Roberto Domínguez
- Biology of Reproduction Research Unit. Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM. AP 9-020, CP15000, México, D.F, Mexico
| |
Collapse
|
45
|
Domínguez R, Diago V, Monleon J, Perales A. Arteria umbilical única aislada. Feto polimalformado. Cariotipo normal. Clínica e Investigación en Ginecología y Obstetricia 2012. [DOI: 10.1016/j.gine.2010.03.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
46
|
Domínguez R, Diago V, Monleón J, Perales A. Hemorragia posparto aguda provocada por inversión uterina incompleta: caso clínico y revisión del problema. Clínica e Investigación en Ginecología y Obstetricia 2011. [DOI: 10.1016/j.gine.2009.12.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
47
|
Morales-Ledesma L, Ramírez DA, Vieyra E, Trujillo A, Chavira R, Cárdenas M, Domínguez R. Effects of acute unilateral ovariectomy to pre-pubertal rats on steroid hormones secretion and compensatory ovarian responses. Reprod Biol Endocrinol 2011; 9:41. [PMID: 21450102 PMCID: PMC3078844 DOI: 10.1186/1477-7827-9-41] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2010] [Accepted: 03/30/2011] [Indexed: 12/04/2022] Open
Abstract
In the present study we analyzed the existence of asymmetry in the secretion of steroid hormones in pre-pubertal female rats treated with unilateral ovariectomy (ULO) or unilateral perforation of the abdominal wall (sham-surgery). Treated rats were sacrificed at different times after surgery. Since sham-surgery had an apparent effect on the age of first vaginal estrous (FVE) and serum levels hormone, the results of the sham surgery groups were used to assess the effects of their respective surgery treatment groups. On the day of FVE, compensatory ovulation (CO) and compensatory ovarian hypertrophy (COH) were similar in animals with ULO, regardless of the ovary remaining in situ. In ULO treated animals, progesterone (P4) levels were higher than in animals with sham-surgery one hour after treatment but lower in rats sacrificed at FEV. Left-ULO resulted in lower testosterone (T) concentration 48 and 72 hours after surgery. In rats with Right-ULO lower T concentrations were observed in rats sacrificed one or 72 hours after surgery, and at FVE. ULO (left or right) resulted in lower estradiol (E2) concentrations one or 72 hours after treatment. In rats with Left-ULO, E2 levels were higher 48 hours after surgery and at FVE. Left-ULO resulted in higher levels of follicle stimulating hormone (FSH) five hours after surgery and at FVE. FSH levels were higher in rats with Right-ULO sacrificed on FVE. The present results suggest that in the pre-pubertal rat both ovaries have similar capacities to secrete P4, and that the right ovary has a higher capacity to secrete E2. Taken together, the present results support the idea that the effects of ULO result from the decrease in glandular tissue and changes in the neural information arising from the ovary.
Collapse
Affiliation(s)
- Leticia Morales-Ledesma
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP 15000, México DF, México
| | - Deyra A Ramírez
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP 15000, México DF, México
| | - Elizabeth Vieyra
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP 15000, México DF, México
| | - Angélica Trujillo
- Escuela de Biología, Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - Roberto Chavira
- Instituto Nacional de Ciencias Médicas y Nutrición "Salvador Zubirán", México DF, México
| | - Mario Cárdenas
- Instituto Nacional de Ciencias Médicas y Nutrición "Salvador Zubirán", México DF, México
| | - Roberto Domínguez
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory, Facultad de Estudios Superiores Zaragoza, UNAM, AP 9-020, CP 15000, México DF, México
| |
Collapse
|
48
|
Flores A, Velasco J, Gallegos AI, Mendoza FD, Everardo PM, Cruz ME, Domínguez R. Acute effects of unilateral sectioning the superior ovarian nerve of rats with unilateral ovariectomy on ovarian hormones (progesterone, testosterone and estradiol) levels vary during the estrous cycle. Reprod Biol Endocrinol 2011; 9:34. [PMID: 21414235 PMCID: PMC3068948 DOI: 10.1186/1477-7827-9-34] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2010] [Accepted: 03/18/2011] [Indexed: 11/10/2022] Open
Abstract
The present study analyzed the participation of the left and right superior ovarian nerves (SON) in regulating progesterone, testosterone, and estradiol serum levels in unilaterally ovariectomized rats on each day of the estrous cycle. For this purpose, ovarian hormone concentrations in serum were measured in animals with either sham-surgery, unilateral ovariectomy (ULO), unilateral sectioning of the SON, or sectioning of the SON innervation of the in situ ovary in rats with ULO.This investigation results show that the right and left ovaries have different capacities to maintain normal hormone levels, that such capacity varies during the estrous cycle, and that it depends on the integrity of the SON innervation. In rats with only one ovary, the effects of ovarian denervation on hormone levels varied according to which ovary remained in situ, the specific hormone, and the day of the estrous cycle when treatment was performed. Present results support the idea that the ovaries send and receive neural information that is processed in the central nervous system and we propose that this information participates in controlling the secretion of gonadotropins related to the regulation of ovarian functions.
Collapse
Affiliation(s)
- Angélica Flores
- Biology of Reproduction Research Unit, FES Zaragoza UNAM, México City, México DF, México
| | - Jacqueline Velasco
- Biology of Reproduction Research Unit, FES Zaragoza UNAM, México City, México DF, México
| | - Alma I Gallegos
- Biology of Reproduction Research Unit, FES Zaragoza UNAM, México City, México DF, México
| | - Fernando D Mendoza
- Biology of Reproduction Research Unit, FES Zaragoza UNAM, México City, México DF, México
| | - Pamela M Everardo
- Biology of Reproduction Research Unit, FES Zaragoza UNAM, México City, México DF, México
| | - María-Esther Cruz
- Biology of Reproduction Research Unit, FES Zaragoza UNAM, México City, México DF, México
| | - Roberto Domínguez
- Biology of Reproduction Research Unit, FES Zaragoza UNAM, México City, México DF, México
| |
Collapse
|
49
|
Suárez M, González P, Domínguez R, Bravo A, Melián C, Pérez M, Herrera I, Blanco D, Hernández R, Fagundo JR. Identification of Organic Compounds in San Diego de los Baños Peloid (Pinar del Río, Cuba). J Altern Complement Med 2011; 17:155-65. [DOI: 10.1089/acm.2009.0587] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Margaret Suárez
- Department of Thermalism, National Center of Natural and Traditional Medicine (CENAMENT), Havana, Cuba.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Morales-Ledesma L, Linares R, Rosas G, Morán C, Chavira R, Cárdenas M, Domínguez R. Unilateral sectioning of the superior ovarian nerve of rats with polycystic ovarian syndrome restores ovulation in the innervated ovary. Reprod Biol Endocrinol 2010; 8:99. [PMID: 20723258 PMCID: PMC2936316 DOI: 10.1186/1477-7827-8-99] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2010] [Accepted: 08/19/2010] [Indexed: 11/10/2022] Open
Abstract
The present study tested the hypothesis that if polycystic ovary syndrome (PCOS) results from activating the noradrenergic outflow to the ovary, unilaterally sectioning the superior ovarian nerve (SON) will result in ovulation by the denervated ovary, and the restoration of progesterone (P4), testosterone (T) and estradiol (E2) normal serum level. A single 2 mg dose of estradiol valerate (EV) to adult rats results in the development of a syndrome similar to the human PCOS. Ten-day old rats were injected with EV or vehicle solution (Vh) and were submitted to sham surgery, unilateral or bilateral sectioning of the SON at 24-days of age. The animals were sacrificed at 90 to 92 days of age, when they presented vaginal estrus preceded by a pro-estrus smear. In EV-treated animals, unilateral sectioning of the SON restored ovulation by the innervated ovary and unilateral or bilateral sectioning of the SON normalized testosterone and estradiol levels. These results suggest that aside from an increase in ovarian noradrenergic tone in the ovaries, in the pathogenesis of the PCOS participate other neural influences arriving to the ovaries via the SON, regulating spontaneous ovulation. Changes in P4, T and E2 serum levels induced by EV treatment seem to be controlled by neural signals arising from the abdominal wall and other signals arriving to the ovaries through the SON, and presents asymmetry.
Collapse
Affiliation(s)
- Leticia Morales-Ledesma
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory FES Zaragoza, UNAM, AP 9-020, CP 15000, México, DF, México
| | - Rosa Linares
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory FES Zaragoza, UNAM, AP 9-020, CP 15000, México, DF, México
| | - Gabriela Rosas
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory FES Zaragoza, UNAM, AP 9-020, CP 15000, México, DF, México
| | - Carolina Morán
- Departament of Biology and Toxicology of Reproduction, Science Institute BUAP, México
| | - Roberto Chavira
- Instituto Nacional de Ciencias Médicas y de la Nutrición "Salvador Zubirán", México
| | - Mario Cárdenas
- Instituto Nacional de Ciencias Médicas y de la Nutrición "Salvador Zubirán", México
| | - Roberto Domínguez
- Biology of Reproduction Research Unit, Physiology of Reproduction Laboratory FES Zaragoza, UNAM, AP 9-020, CP 15000, México, DF, México
| |
Collapse
|