Effect of social instability on social recognition and partner preference in guinea pigs, Cavia porcellus
La inestabilidad social desencadena diversas respuestas fisiológicas y endocrinológicas al estrés. Las fluctuaciones hormonales inducidas por el estrés y reguladas por el eje HPA modulan los procesos sociales y de memoria. En este estudio, evalué el efecto de la inestabilidad social sobre la prefere...
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- Universidad del Rosario
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- Palabra clave:
- Cambios en la composición de grupo
Cortisol
Eje HPA
Mecanismos endocrinológicos
Organización social
Oxitocina
Endocrinological mechanisms
Changes in group composition
Cortisol
HPA-axis
Oxytocin
Social organization
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|
dc.title.none.fl_str_mv |
Effect of social instability on social recognition and partner preference in guinea pigs, Cavia porcellus |
dc.title.TranslatedTitle.none.fl_str_mv |
Efecto de la inestabilidad social en el reconocimiento social y la preferencia por compañero en cuyes, Cavia porcellus |
title |
Effect of social instability on social recognition and partner preference in guinea pigs, Cavia porcellus |
spellingShingle |
Effect of social instability on social recognition and partner preference in guinea pigs, Cavia porcellus Cambios en la composición de grupo Cortisol Eje HPA Mecanismos endocrinológicos Organización social Oxitocina Endocrinological mechanisms Changes in group composition Cortisol HPA-axis Oxytocin Social organization |
title_short |
Effect of social instability on social recognition and partner preference in guinea pigs, Cavia porcellus |
title_full |
Effect of social instability on social recognition and partner preference in guinea pigs, Cavia porcellus |
title_fullStr |
Effect of social instability on social recognition and partner preference in guinea pigs, Cavia porcellus |
title_full_unstemmed |
Effect of social instability on social recognition and partner preference in guinea pigs, Cavia porcellus |
title_sort |
Effect of social instability on social recognition and partner preference in guinea pigs, Cavia porcellus |
dc.contributor.advisor.none.fl_str_mv |
Maldonado Chaparro, Adriana Alexandra |
dc.subject.none.fl_str_mv |
Cambios en la composición de grupo Cortisol Eje HPA Mecanismos endocrinológicos Organización social Oxitocina |
topic |
Cambios en la composición de grupo Cortisol Eje HPA Mecanismos endocrinológicos Organización social Oxitocina Endocrinological mechanisms Changes in group composition Cortisol HPA-axis Oxytocin Social organization |
dc.subject.keyword.none.fl_str_mv |
Endocrinological mechanisms Changes in group composition Cortisol HPA-axis Oxytocin Social organization |
description |
La inestabilidad social desencadena diversas respuestas fisiológicas y endocrinológicas al estrés. Las fluctuaciones hormonales inducidas por el estrés y reguladas por el eje HPA modulan los procesos sociales y de memoria. En este estudio, evalué el efecto de la inestabilidad social sobre la preferencia y el reconocimiento social en cobayas (Cavia porcellus) y medí los niveles de cortisol (CORT) y oxitocina (OT) en sangre. Mis resultados mostraron que la inestabilidad social afecta a la preferencia social, pero no afectó significativamente al reconocimiento social ni a los niveles de CORT u OT. Estos resultados sugieren que la inestabilidad social afecta a los procesos sociales, como los procesos de toma de decisiones sociales, independientemente de los cambios inmediatos en CORT y OT circulantes, contribuyendo a nuestra comprensión de la interacción entre el estrés social y el comportamiento social. |
publishDate |
2025 |
dc.date.accessioned.none.fl_str_mv |
2025-05-15T13:39:00Z |
dc.date.available.none.fl_str_mv |
2025-05-15T13:39:00Z |
dc.date.created.none.fl_str_mv |
2025-04-23 |
dc.date.embargoEnd.none.fl_str_mv |
info:eu-repo/date/embargoEnd/2027-05-16 |
dc.type.none.fl_str_mv |
bachelorThesis |
dc.type.coar.fl_str_mv |
http://purl.org/coar/resource_type/c_7a1f |
dc.type.spa.none.fl_str_mv |
Trabajo de grado |
dc.identifier.uri.none.fl_str_mv |
https://repository.urosario.edu.co/handle/10336/45328 |
url |
https://repository.urosario.edu.co/handle/10336/45328 |
dc.language.iso.none.fl_str_mv |
eng |
language |
eng |
dc.rights.*.fl_str_mv |
Attribution-NonCommercial-ShareAlike 4.0 International |
dc.rights.coar.fl_str_mv |
http://purl.org/coar/access_right/c_f1cf |
dc.rights.acceso.none.fl_str_mv |
Restringido (Temporalmente bloqueado) |
dc.rights.uri.*.fl_str_mv |
http://creativecommons.org/licenses/by-nc-sa/4.0/ |
rights_invalid_str_mv |
Attribution-NonCommercial-ShareAlike 4.0 International Restringido (Temporalmente bloqueado) http://creativecommons.org/licenses/by-nc-sa/4.0/ http://purl.org/coar/access_right/c_f1cf |
dc.format.extent.none.fl_str_mv |
36 pp |
dc.format.mimetype.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidad del Rosario |
dc.publisher.department.none.fl_str_mv |
Facultad de Ciencias Naturales |
dc.publisher.program.none.fl_str_mv |
Biología |
publisher.none.fl_str_mv |
Universidad del Rosario |
institution |
Universidad del Rosario |
dc.source.bibliographicCitation.none.fl_str_mv |
Baranyi, J., Bakos, N., & Haller, J. (2005). Social instability in female rats: The relationship between stress-related and anxiety-like consequences. Physiology & Behavior, 84(4), 511-518. https://doi.org/10.1016/j.physbeh.2005.01.005 Bartz, J. A., Zaki, J., Bolger, N., & Ochsner, K. N. (2011). Social effects of oxytocin in humans: Context and person matter. Trends in Cognitive Sciences, 15(7), 301-309. https://doi.org/10.1016/j.tics.2011.05.002 Bates, D., Mächler, M., Bolker, B., & Walker, S. (2015). Fitting Linear Mixed-Effects Models Using lme4. Journal of Statistical Software, 67, 1-48. https://doi.org/10.18637/jss.v067.i01 Beery, A. K. (2015). Antisocial oxytocin: Complex effects on social behavior. Current Opinion in Behavioral Sciences, 6, 174-182. https://doi.org/10.1016/j.cobeha.2015.11.006 Beery, A. K., & Kaufer, D. (2015). Stress, social behavior, and resilience: Insights from rodents. Neurobiology of Stress, 1, 116-127. https://doi.org/10.1016/j.ynstr.2014.10.004 Beery, A. K., & Shambaugh, K. L. (2021). Comparative Assessment of Familiarity/Novelty Preferences in Rodents. Frontiers in Behavioral Neuroscience, 15. https://doi.org/10.3389/fnbeh.2021.648830 Beery, A. K., & Zucker, I. (2010). Oxytocin and same-sex social behavior in female meadow voles. Neuroscience, 169(2), 665-673. https://doi.org/10.1016/j.neuroscience.2010.05.023 Bielsky, I. F., & Young, L. J. (2004). Oxytocin, vasopressin, and social recognition in mammals. Peptides, 25(9), 1565-1574. https://doi.org/10.1016/j.peptides.2004.05.019 Bókony, V., Lendvai, A. Z., Liker, A., Angelier, F., Wingfield, J. C., & Chastel, O. (2009). Stress response and the value of reproduction: Are birds prudent parents? The American Naturalist, 173(5), 589-598. https://doi.org/10.1086/597610 Cabeza, L., Ramadan, B., Giustiniani, J., Houdayer, C., Pellequer, Y., Gabriel, D., Fauconnet, S., Haffen, E., Risold, P.-Y., Fellmann, D., Belin, D., & Peterschmitt, Y. (2021). Chronic exposure to glucocorticoids induces suboptimal decision-making in mice. European Neuropsychopharmacology, 46, 56-67. https://doi.org/10.1016/j.euroneuro.2021.01.094 Cheetham, S. A., Thom, M. D., Beynon, R. J., & Hurst, J. L. (2008). The Effect of Familiarity on Mate Choice. En J. L. Hurst, R. J. Beynon, S. C. Roberts, & T. D. Wyatt (Eds.), Chemical Signals in Vertebrates 11 (pp. 271-280). Springer. https://doi.org/10.1007/978-0-387-73945-8_26 Cohen, S., Janicki-Deverts, D., Doyle, W. J., Miller, G. E., Frank, E., Rabin, B. S., & Turner, R. B. (2012). Chronic stress, glucocorticoid receptor resistance, inflammation, and disease risk. Proceedings of the National Academy of Sciences, 109(16), 5995-5999. https://doi.org/10.1073/pnas.1118355109 Cruz-Topete, D., & Cidlowski, J. A. (2015). One hormone, two actions: Anti- and pro-inflammatory effects of glucocorticoids. Neuroimmunomodulation, 22(1-2), 20-32. https://doi.org/10.1159/000362724 Declerck, C. H., Boone, C., & Kiyonari, T. (2010). Oxytocin and cooperation under conditions of uncertainty: The modulating role of incentives and social information. Hormones and Behavior, 57(3), 368-374. https://doi.org/10.1016/j.yhbeh.2010.01.006 Donatti, T. L., Koch, V. H. K., Takayama, L., & Pereira, R. M. R. (2011). Effects of glucocorticoids on growth and bone mineralization. Jornal De Pediatria, 87(1), 4-12. https://doi.org/10.2223/JPED.2052 Ferguson, J. N., Young, L. J., & Insel, T. R. (2002). The Neuroendocrine Basis of Social Recognition. Frontiers in Neuroendocrinology, 23(2), 200-224. https://doi.org/10.1006/frne.2002.0229 Friard, O., & Gamba, M. (2016). BORIS: A free, versatile open-source event-logging software for video/audio coding and live observations. Methods in Ecology and Evolution, 7(11), 1325 1330. https://doi.org/10.1111/2041-210X.12584 Frith, C. D., & Singer, T. (2008). The role of social cognition in decision making. Philosophical Transactions of the Royal Society B: Biological Sciences, 363(1511), 3875-3886. https://doi.org/10.1098/rstb.2008.0156 Gao, W., Stalder, T., & Kirschbaum, C. (2015). Quantitative analysis of estradiol and six other steroid hormones in human saliva using a high throughput liquid chromatography-tandem mass spectrometry assay. Talanta, 143, 353-358. https://doi.org/10.1016/j.talanta.2015.05.004 Gheusi, G., Bluthé, R.-M., Goodall, G., & Dantzer, R. (1994). Social and individual recognition in rodents: Methodological aspects and neurobiological bases. Behavioural Processes, 33(1), 59-87. https://doi.org/10.1016/0376-6357(94)90060-4 Gibbs, D. M. (1986). Vasopressin and oxytocin: Hypothalamic modulators of the stress response: a review. Psychoneuroendocrinology, 11(2), 131-139. https://doi.org/10.1016/0306 4530(86)90048-X Gil, M., Bhatt, R., Picotte, K. B., & Hull, E. M. (2011). Oxytocin in the medial preoptic area facilitates male sexual behavior in the rat. Hormones and Behavior, 59(4), 435-443. https://doi.org/10.1016/j.yhbeh.2010.12.012 Guia, R. M. de, Rose, A. J., & Herzig, S. (2014). Glucocorticoid hormones and energy homeostasis. Hormone Molecular Biology and Clinical Investigation, 19(2), 117-128. https://doi.org/10.1515/hmbci-2014-0021 Hatch, A. M., Wiberg, G. S., Zawidzka, Z., Cann, M., Airth, J. M., & Grice, H. C. (1965). Isolation syndrome in the rat. Toxicology and Applied Pharmacology, 7(5), 737-745. https://doi.org/10.1016/0041-008X(65)90132-8 Hawkins, U. A., Gomez-Sanchez, E. P., Gomez-Sanchez, C. M., & Gomez-Sanchez, C. E. (2012). The Ubiquitous Mineralocorticoid Receptor: Clinical Implications. Current hypertension reports, 14(6), 573-580. https://doi.org/10.1007/s11906-012-0297-0 Heinrichs, M., Meinlschmidt, G., Wippich, W., Ehlert, U., & Hellhammer, D. H. (2004). Selective amnesic effects of oxytocin on human memory. Physiology & Behavior, 83(1), 31-38. https://doi.org/10.1016/j.physbeh.2004.07.020 Hodges, T. E., Baumbach, J. L., Marcolin, M. L., Bredewold, R., Veenema, A. H., & McCormick, C. M. (2017). Social instability stress in adolescent male rats reduces social interaction and social recognition performance and increases oxytocin receptor binding. Neuroscience, 359, 172 182. https://doi.org/10.1016/j.neuroscience.2017.07.032 Joëls, M. (2011). Impact of glucocorticoids on brain function: Relevance for mood disorders. Psychoneuroendocrinology, 36(3), 406-414. https://doi.org/10.1016/j.psyneuen.2010.03.004 Keller, B. A., Finger, J.-S., Gruber, S. H., Abel, D. C., & Guttridge, T. L. (2017). The effects of familiarity on the social interactions of juvenile lemon sharks, Negaprion brevirostris. Journal of Experimental Marine Biology and Ecology, 489, 24-31. https://doi.org/10.1016/j.jembe.2017.01.004 Kuznetsova, A., Brockhoff, P. B., & Christensen, R. H. B. (2017). lmerTest Package: Tests in Linear Mixed Effects Models. Journal of Statistical Software, 82, 1-26. https://doi.org/10.18637/jss.v082.i13 Lenth, R. V. (2017). emmeans: Estimated Marginal Means, aka Least-Squares Means (p. 1.10.7) [Dataset]. https://doi.org/10.32614/CRAN.package.emmeans Liberzon, I., & Young, E. A. (1997). Effects of stress and glucocorticoids on CNS oxytocin receptor binding. Psychoneuroendocrinology, 22(6), 411-422. https://doi.org/10.1016/S0306 4530(97)00045-0 Light, K. C., Grewen, K. M., Amico, J. A., Boccia, M., Brownley, K. A., & Johns, J. M. (2004). Deficits in plasma oxytocin responses and increased negative affect, stress, and blood pressure in mothers with cocaine exposure during pregnancy. Addictive Behaviors, 29(8), 1541-1564. https://doi.org/10.1016/j.addbeh.2004.02.062 Linnen, A.-M., Ellenbogen, M. A., Cardoso, C., & Joober, R. (2012). Intranasal oxytocin and salivary cortisol concentrations during social rejection in university students. Stress, 15(4), 393 402. https://doi.org/10.3109/10253890.2011.631154 Nakayasu, T., & Kato, K. (2011). Is full physical contact necessary for buffering effects of pair housing on social stress in rats? Behavioural Processes, 86(2), 230-235. https://doi.org/10.1016/j.beproc.2010.12.002 Neumann, I. D., Torner, L., & Wigger, A. (1999). Brain oxytocin: Differential inhibition of neuroendocrine stress responses and anxiety-related behaviour in virgin, pregnant and lactating rats. Neuroscience, 95(2), 567-575. https://doi.org/10.1016/S0306 4522(99)00433-9 Parker, K. J., Buckmaster, C. L., Schatzberg, A. F., & Lyons, D. M. (2005). Intranasal oxytocin administration attenuates the ACTH stress response in monkeys. Psychoneuroendocrinology, 30(9), 924-929. https://doi.org/10.1016/j.psyneuen.2005.04.002 Patki, G., Solanki, N., Atrooz, F., Allam, F., & Salim, S. (2013). Depression, anxiety-like behavior and memory impairment are associated with increased oxidative stress and inflammation in a rat model of social stress. Brain Research, 1539, 73-86. https://doi.org/10.1016/j.brainres.2013.09.033 Petersson, M. (2002). Chapter 22 Cardiovascular effects of oxytocin. En Progress in Brain Research (Vol. 139, pp. 281-288). Elsevier. https://doi.org/10.1016/S0079-6123(02)39024-1 Putman, P., Antypa, N., Crysovergi, P., & van der Does, W. A. J. (2010). Exogenous cortisol acutely influences motivated decision making in healthy young men. Psychopharmacology, 208(2), 257-263. https://doi.org/10.1007/s00213-009-1725-y R Core Team. (2024). _R: A Language and Environment for Statistical Computing_. R Foundation for Statistical Computing, Vienna, Austria. https://www.r-project.org/ Romero, L. M., Dickens, M. J., & Cyr, N. E. (2009). The reactive scope model—A new model integrating homeostasis, allostasis, and stress. Hormones and Behavior, 55(3), 375-389. https://doi.org/10.1016/j.yhbeh.2008.12.009 Romero-Chacón, A. M. (2024). Assessment of same-sex and opposite-sex partner preferences in guinea pigs (Cavia porcellus). https://repository.urosario.edu.co/items/b3ae7661-d1db 48bc-a719-1d3af4c40f1f Rystrom, T. L., Wesseler, Y., Richter, S. H., Sachser, N., & Kaiser, S. (2023). Shaped by you: The effect of social partner on cortisol and behavior during adolescence in a female rodent. Ethology, n/a(n/a). https://doi.org/10.1111/eth.13414 Sachser, N. (1986). Different Forms of Social Organization At High and Low Population Densities in Guinea Pigs. Behaviour, 97(3-4), Article 3-4. https://doi.org/10.1163/156853986X00630 Sachser, N., & Lick, C. (1989). Social stress in guinea pigs. Physiology & Behavior, 46(2), 137-144. https://doi.org/10.1016/0031-9384(89)90246-1 Sarmiento Rivera, L. F., & Gouveia, A. (2021). Neurotransmitters and Hormones in Human Decision-Making. En P. Á. Gargiulo & H. L. Mesones Arroyo (Eds.), Psychiatry and Neuroscience Update: From Epistemology to Clinical Psychiatry – Vol. IV (pp. 149-167). Springer International Publishing. https://doi.org/10.1007/978-3-030-61721-9_15 Siegeler, K., Wistuba, J., Damm, O. S., von Engelhardt, N., Sachser, N., & Kaiser, S. (2013). Early social instability affects plasma testosterone during adolescence but does not alter reproductive capacity or measures of stress later in life. Physiology & Behavior, 120, 143 149. https://doi.org/10.1016/j.physbeh.2013.08.008 Steinbeis, N., Engert, V., Linz, R., & Singer, T. (2015). The effects of stress and affiliation on social decision-making: Investigating the tend-and-befriend pattern. Psychoneuroendocrinology, 62, 138-148. https://doi.org/10.1016/j.psyneuen.2015.08.003 Takahashi, T., Ikeda, K., Ishikawa, M., Tsukasaki, T., Nakama, D., Tanida, S., & Kameda, T. (2004). Social stress-induced cortisol elevation acutely impairs social memory in humans. Neuroscience Letters, 363(2), 125-130. https://doi.org/10.1016/j.neulet.2004.03.062 Tatomir, A., Micu, C., & Crivii, C. (2014). The impact of stress and glucocorticoids on memory. Clujul Medical (1957), 87(1), 3-6. https://doi.org/10.15386/cjm.2014.8872.871.at1cm2 Thor, D. H., & Holloway, W. R. (1981). Persistence of social investigatory behavior in the male rat: Evidence for long-term memory of initial copulatory experience. Animal Learning & Behavior, 9(4), 561-565. https://doi.org/10.3758/BF03209791 Tops, M., van Peer, J. M., Korf, J., Wijers, A. A., & Tucker, D. M. (2007). Anxiety, cortisol, and attachment predict plasma oxytocin. Psychophysiology, 44(3), 444-449. https://doi.org/10.1111/j.1469-8986.2007.00510.x Vegiopoulos, A., & Herzig, S. (2007). Glucocorticoids, metabolism and metabolic diseases. Molecular and Cellular Endocrinology, 275(1-2), 43-61. https://doi.org/10.1016/j.mce.2007.05.015 Vitousek, M. N., Johnson, M. A., Downs, C. J., Miller, E. T., Martin, L. B., Francis, C. D., Donald, J. W., Fuxjager, M. J., Goymann, W., Hau, M., Husak, J. F., Kircher, B. K., Knapp, R., Schoenle, L. A., & Williams, T. D. (2019). Macroevolutionary Patterning in Glucocorticoids Suggests Different Selective Pressures Shape Baseline and Stress-Induced Levels. The American Naturalist, 193(6), 866-880. https://doi.org/10.1086/703112 Viviani, D., Charlet, A., Van Den Burg, E., Robinet, C., Hurni, N., Abatis, M., Magara, F., & Stoop, R. (2011). Oxytocin Selectively Gates Fear Responses Through Distinct Outputs from the Central Amygdala. Science, 333(6038), 104-107. https://doi.org/10.1126/science.1201043 Wagner, J. E., Manning, P. J., & American College of Laboratory Animal Medicine. (1976). The biology of the guinea pig. Academic Press. Walum, H., & Young, L. J. (2018). The neural mechanisms and circuitry of the pair bond. Nature Reviews Neuroscience, 19(11), 643-654. https://doi.org/10.1038/s41583-018-0072-6 Wang, L., Marti, D. W., & Anderson, R. E. (2019). Development and Validation of a Simple LC-MS Method for the Quantification of Oxytocin in Dog Saliva. Molecules (Basel, Switzerland), 24(17), 3079. https://doi.org/10.3390/molecules24173079 Washington, I. M., & Van Hoosier, G. (2012). Clinical Biochemistry and Hematology. The Laboratory Rabbit, Guinea Pig, Hamster, and Other Rodents, 57-116. https://doi.org/10.1016/B978-0-12-380920-9.00003-1 Willis, F. N., Levinson, D. M., & Buchanan, D. R. (1977). Development of Social Behavior in the Guinea Pig. The Psychological Record, 27(3), Article 3. https://doi.org/10.1007/BF03394474 Windle, R. J., Shanks, N., Lightman, S. L., & Ingram, C. D. (1997). Central oxytocin administration reduces stress-induced corticosterone release and anxiety behavior in rats. Endocrinology, 138(7), 2829-2834. https://doi.org/10.1210/endo.138.7.5255 Winslow, J. T. (2003). Mouse social recognition and preference. Current Protocols in Neuroscience, Chapter 8, Unit 8.16. https://doi.org/10.1002/0471142301.ns0816s22 Yohn, C. N., Ashamalla, S. A., Bokka, L., Gergues, M. M., Garino, A., & Samuels, B. A. (2019). Social instability is an effective chronic stress paradigm for both male and female mice. Neuropharmacology, 160, 107780. https://doi.org/10.1016/j.neuropharm.2019.107780 |
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Maldonado Chaparro, Adriana Alexandra37861034600Pantoja Ruíz, ValentinaBiólogoPregrado9f03de59-2cb9-4fd7-8e8b-dda974492bba-12025-05-15T13:39:00Z2025-05-15T13:39:00Z2025-04-23info:eu-repo/date/embargoEnd/2027-05-16La inestabilidad social desencadena diversas respuestas fisiológicas y endocrinológicas al estrés. Las fluctuaciones hormonales inducidas por el estrés y reguladas por el eje HPA modulan los procesos sociales y de memoria. En este estudio, evalué el efecto de la inestabilidad social sobre la preferencia y el reconocimiento social en cobayas (Cavia porcellus) y medí los niveles de cortisol (CORT) y oxitocina (OT) en sangre. Mis resultados mostraron que la inestabilidad social afecta a la preferencia social, pero no afectó significativamente al reconocimiento social ni a los niveles de CORT u OT. Estos resultados sugieren que la inestabilidad social afecta a los procesos sociales, como los procesos de toma de decisiones sociales, independientemente de los cambios inmediatos en CORT y OT circulantes, contribuyendo a nuestra comprensión de la interacción entre el estrés social y el comportamiento social.Social instability triggers diverse physiological and endocrinological stress responses that can affect social decisions. Stress-induced hormonal fluctuations regulated by the HPA-axis modulate social and memory processes. In this study, I evaluated the effect of social instability on social preference and recognition in guinea pigs (Cavia porcellus), and measured blood cortisol (CORT) and oxytocin (OT) levels. My results showed that social instability affects social preference but did not significantly affect on social recognition or CORT or OT levels. These findings suggest that social instability affects social processes such as social decision-making processes, independently of immediate changes in circulating CORT and OT, contributing to our understanding of the interplay between social stress and social behavior.36 ppapplication/pdfhttps://repository.urosario.edu.co/handle/10336/45328engUniversidad del RosarioFacultad de Ciencias NaturalesBiologíaAttribution-NonCommercial-ShareAlike 4.0 InternationalRestringido (Temporalmente bloqueado)EL AUTOR, manifiesta que la obra objeto de la presente autorización es original y la realizó sin violar o usurpar derechos de autor de terceros, por lo tanto la obra es de exclusiva autoría y tiene la titularidad sobre la misma.http://creativecommons.org/licenses/by-nc-sa/4.0/http://purl.org/coar/access_right/c_f1cfBaranyi, J., Bakos, N., & Haller, J. (2005). Social instability in female rats: The relationship between stress-related and anxiety-like consequences. Physiology & Behavior, 84(4), 511-518. https://doi.org/10.1016/j.physbeh.2005.01.005Bartz, J. A., Zaki, J., Bolger, N., & Ochsner, K. N. (2011). Social effects of oxytocin in humans: Context and person matter. Trends in Cognitive Sciences, 15(7), 301-309. https://doi.org/10.1016/j.tics.2011.05.002Bates, D., Mächler, M., Bolker, B., & Walker, S. (2015). Fitting Linear Mixed-Effects Models Using lme4. Journal of Statistical Software, 67, 1-48. https://doi.org/10.18637/jss.v067.i01Beery, A. K. (2015). Antisocial oxytocin: Complex effects on social behavior. Current Opinion in Behavioral Sciences, 6, 174-182. https://doi.org/10.1016/j.cobeha.2015.11.006Beery, A. K., & Kaufer, D. (2015). Stress, social behavior, and resilience: Insights from rodents. Neurobiology of Stress, 1, 116-127. https://doi.org/10.1016/j.ynstr.2014.10.004Beery, A. K., & Shambaugh, K. L. (2021). Comparative Assessment of Familiarity/Novelty Preferences in Rodents. Frontiers in Behavioral Neuroscience, 15. https://doi.org/10.3389/fnbeh.2021.648830Beery, A. K., & Zucker, I. (2010). Oxytocin and same-sex social behavior in female meadow voles. Neuroscience, 169(2), 665-673. https://doi.org/10.1016/j.neuroscience.2010.05.023Bielsky, I. F., & Young, L. J. (2004). Oxytocin, vasopressin, and social recognition in mammals. Peptides, 25(9), 1565-1574. https://doi.org/10.1016/j.peptides.2004.05.019Bókony, V., Lendvai, A. Z., Liker, A., Angelier, F., Wingfield, J. C., & Chastel, O. (2009). Stress response and the value of reproduction: Are birds prudent parents? The American Naturalist, 173(5), 589-598. https://doi.org/10.1086/597610Cabeza, L., Ramadan, B., Giustiniani, J., Houdayer, C., Pellequer, Y., Gabriel, D., Fauconnet, S., Haffen, E., Risold, P.-Y., Fellmann, D., Belin, D., & Peterschmitt, Y. (2021). Chronic exposure to glucocorticoids induces suboptimal decision-making in mice. European Neuropsychopharmacology, 46, 56-67. https://doi.org/10.1016/j.euroneuro.2021.01.094Cheetham, S. A., Thom, M. D., Beynon, R. J., & Hurst, J. L. (2008). The Effect of Familiarity on Mate Choice. En J. L. Hurst, R. J. Beynon, S. C. Roberts, & T. D. Wyatt (Eds.), Chemical Signals in Vertebrates 11 (pp. 271-280). Springer. https://doi.org/10.1007/978-0-387-73945-8_26Cohen, S., Janicki-Deverts, D., Doyle, W. J., Miller, G. E., Frank, E., Rabin, B. S., & Turner, R. B. (2012). Chronic stress, glucocorticoid receptor resistance, inflammation, and disease risk. Proceedings of the National Academy of Sciences, 109(16), 5995-5999. https://doi.org/10.1073/pnas.1118355109Cruz-Topete, D., & Cidlowski, J. A. (2015). One hormone, two actions: Anti- and pro-inflammatory effects of glucocorticoids. Neuroimmunomodulation, 22(1-2), 20-32. https://doi.org/10.1159/000362724Declerck, C. H., Boone, C., & Kiyonari, T. (2010). Oxytocin and cooperation under conditions of uncertainty: The modulating role of incentives and social information. Hormones and Behavior, 57(3), 368-374. https://doi.org/10.1016/j.yhbeh.2010.01.006Donatti, T. L., Koch, V. H. K., Takayama, L., & Pereira, R. M. R. (2011). Effects of glucocorticoids on growth and bone mineralization. Jornal De Pediatria, 87(1), 4-12. https://doi.org/10.2223/JPED.2052Ferguson, J. N., Young, L. J., & Insel, T. R. (2002). The Neuroendocrine Basis of Social Recognition. Frontiers in Neuroendocrinology, 23(2), 200-224. https://doi.org/10.1006/frne.2002.0229Friard, O., & Gamba, M. (2016). BORIS: A free, versatile open-source event-logging software for video/audio coding and live observations. Methods in Ecology and Evolution, 7(11), 1325 1330. https://doi.org/10.1111/2041-210X.12584Frith, C. D., & Singer, T. (2008). The role of social cognition in decision making. Philosophical Transactions of the Royal Society B: Biological Sciences, 363(1511), 3875-3886. https://doi.org/10.1098/rstb.2008.0156Gao, W., Stalder, T., & Kirschbaum, C. (2015). Quantitative analysis of estradiol and six other steroid hormones in human saliva using a high throughput liquid chromatography-tandem mass spectrometry assay. Talanta, 143, 353-358. https://doi.org/10.1016/j.talanta.2015.05.004Gheusi, G., Bluthé, R.-M., Goodall, G., & Dantzer, R. (1994). Social and individual recognition in rodents: Methodological aspects and neurobiological bases. Behavioural Processes, 33(1), 59-87. https://doi.org/10.1016/0376-6357(94)90060-4Gibbs, D. M. (1986). Vasopressin and oxytocin: Hypothalamic modulators of the stress response: a review. Psychoneuroendocrinology, 11(2), 131-139. https://doi.org/10.1016/0306 4530(86)90048-XGil, M., Bhatt, R., Picotte, K. B., & Hull, E. M. (2011). Oxytocin in the medial preoptic area facilitates male sexual behavior in the rat. Hormones and Behavior, 59(4), 435-443. https://doi.org/10.1016/j.yhbeh.2010.12.012Guia, R. M. de, Rose, A. J., & Herzig, S. (2014). Glucocorticoid hormones and energy homeostasis. Hormone Molecular Biology and Clinical Investigation, 19(2), 117-128. https://doi.org/10.1515/hmbci-2014-0021Hatch, A. M., Wiberg, G. S., Zawidzka, Z., Cann, M., Airth, J. M., & Grice, H. C. (1965). Isolation syndrome in the rat. Toxicology and Applied Pharmacology, 7(5), 737-745. https://doi.org/10.1016/0041-008X(65)90132-8Hawkins, U. A., Gomez-Sanchez, E. P., Gomez-Sanchez, C. M., & Gomez-Sanchez, C. E. (2012). The Ubiquitous Mineralocorticoid Receptor: Clinical Implications. Current hypertension reports, 14(6), 573-580. https://doi.org/10.1007/s11906-012-0297-0Heinrichs, M., Meinlschmidt, G., Wippich, W., Ehlert, U., & Hellhammer, D. H. (2004). Selective amnesic effects of oxytocin on human memory. Physiology & Behavior, 83(1), 31-38. https://doi.org/10.1016/j.physbeh.2004.07.020Hodges, T. E., Baumbach, J. L., Marcolin, M. L., Bredewold, R., Veenema, A. H., & McCormick, C. M. (2017). Social instability stress in adolescent male rats reduces social interaction and social recognition performance and increases oxytocin receptor binding. Neuroscience, 359, 172 182. https://doi.org/10.1016/j.neuroscience.2017.07.032Joëls, M. (2011). Impact of glucocorticoids on brain function: Relevance for mood disorders. Psychoneuroendocrinology, 36(3), 406-414. https://doi.org/10.1016/j.psyneuen.2010.03.004Keller, B. A., Finger, J.-S., Gruber, S. H., Abel, D. C., & Guttridge, T. L. (2017). The effects of familiarity on the social interactions of juvenile lemon sharks, Negaprion brevirostris. Journal of Experimental Marine Biology and Ecology, 489, 24-31. https://doi.org/10.1016/j.jembe.2017.01.004Kuznetsova, A., Brockhoff, P. B., & Christensen, R. H. B. (2017). lmerTest Package: Tests in Linear Mixed Effects Models. Journal of Statistical Software, 82, 1-26. https://doi.org/10.18637/jss.v082.i13Lenth, R. V. (2017). emmeans: Estimated Marginal Means, aka Least-Squares Means (p. 1.10.7) [Dataset]. https://doi.org/10.32614/CRAN.package.emmeansLiberzon, I., & Young, E. A. (1997). Effects of stress and glucocorticoids on CNS oxytocin receptor binding. Psychoneuroendocrinology, 22(6), 411-422. https://doi.org/10.1016/S0306 4530(97)00045-0Light, K. C., Grewen, K. M., Amico, J. A., Boccia, M., Brownley, K. A., & Johns, J. M. (2004). Deficits in plasma oxytocin responses and increased negative affect, stress, and blood pressure in mothers with cocaine exposure during pregnancy. Addictive Behaviors, 29(8), 1541-1564. https://doi.org/10.1016/j.addbeh.2004.02.062Linnen, A.-M., Ellenbogen, M. A., Cardoso, C., & Joober, R. (2012). Intranasal oxytocin and salivary cortisol concentrations during social rejection in university students. Stress, 15(4), 393 402. https://doi.org/10.3109/10253890.2011.631154Nakayasu, T., & Kato, K. (2011). Is full physical contact necessary for buffering effects of pair housing on social stress in rats? Behavioural Processes, 86(2), 230-235. https://doi.org/10.1016/j.beproc.2010.12.002Neumann, I. D., Torner, L., & Wigger, A. (1999). Brain oxytocin: Differential inhibition of neuroendocrine stress responses and anxiety-related behaviour in virgin, pregnant and lactating rats. Neuroscience, 95(2), 567-575. https://doi.org/10.1016/S0306 4522(99)00433-9Parker, K. J., Buckmaster, C. L., Schatzberg, A. F., & Lyons, D. M. (2005). Intranasal oxytocin administration attenuates the ACTH stress response in monkeys. Psychoneuroendocrinology, 30(9), 924-929. https://doi.org/10.1016/j.psyneuen.2005.04.002Patki, G., Solanki, N., Atrooz, F., Allam, F., & Salim, S. (2013). Depression, anxiety-like behavior and memory impairment are associated with increased oxidative stress and inflammation in a rat model of social stress. Brain Research, 1539, 73-86. https://doi.org/10.1016/j.brainres.2013.09.033Petersson, M. (2002). Chapter 22 Cardiovascular effects of oxytocin. En Progress in Brain Research (Vol. 139, pp. 281-288). Elsevier. https://doi.org/10.1016/S0079-6123(02)39024-1Putman, P., Antypa, N., Crysovergi, P., & van der Does, W. A. J. (2010). Exogenous cortisol acutely influences motivated decision making in healthy young men. Psychopharmacology, 208(2), 257-263. https://doi.org/10.1007/s00213-009-1725-yR Core Team. (2024). _R: A Language and Environment for Statistical Computing_. R Foundation for Statistical Computing, Vienna, Austria. https://www.r-project.org/Romero, L. M., Dickens, M. J., & Cyr, N. E. (2009). The reactive scope model—A new model integrating homeostasis, allostasis, and stress. Hormones and Behavior, 55(3), 375-389. https://doi.org/10.1016/j.yhbeh.2008.12.009Romero-Chacón, A. M. (2024). Assessment of same-sex and opposite-sex partner preferences in guinea pigs (Cavia porcellus). https://repository.urosario.edu.co/items/b3ae7661-d1db 48bc-a719-1d3af4c40f1fRystrom, T. L., Wesseler, Y., Richter, S. H., Sachser, N., & Kaiser, S. (2023). Shaped by you: The effect of social partner on cortisol and behavior during adolescence in a female rodent. Ethology, n/a(n/a). https://doi.org/10.1111/eth.13414Sachser, N. (1986). Different Forms of Social Organization At High and Low Population Densities in Guinea Pigs. Behaviour, 97(3-4), Article 3-4. https://doi.org/10.1163/156853986X00630Sachser, N., & Lick, C. (1989). Social stress in guinea pigs. Physiology & Behavior, 46(2), 137-144. https://doi.org/10.1016/0031-9384(89)90246-1Sarmiento Rivera, L. F., & Gouveia, A. (2021). Neurotransmitters and Hormones in Human Decision-Making. En P. Á. Gargiulo & H. L. Mesones Arroyo (Eds.), Psychiatry and Neuroscience Update: From Epistemology to Clinical Psychiatry – Vol. IV (pp. 149-167). Springer International Publishing. https://doi.org/10.1007/978-3-030-61721-9_15Siegeler, K., Wistuba, J., Damm, O. S., von Engelhardt, N., Sachser, N., & Kaiser, S. (2013). Early social instability affects plasma testosterone during adolescence but does not alter reproductive capacity or measures of stress later in life. Physiology & Behavior, 120, 143 149. https://doi.org/10.1016/j.physbeh.2013.08.008Steinbeis, N., Engert, V., Linz, R., & Singer, T. (2015). The effects of stress and affiliation on social decision-making: Investigating the tend-and-befriend pattern. Psychoneuroendocrinology, 62, 138-148. https://doi.org/10.1016/j.psyneuen.2015.08.003Takahashi, T., Ikeda, K., Ishikawa, M., Tsukasaki, T., Nakama, D., Tanida, S., & Kameda, T. (2004). Social stress-induced cortisol elevation acutely impairs social memory in humans. Neuroscience Letters, 363(2), 125-130. https://doi.org/10.1016/j.neulet.2004.03.062Tatomir, A., Micu, C., & Crivii, C. (2014). The impact of stress and glucocorticoids on memory. Clujul Medical (1957), 87(1), 3-6. https://doi.org/10.15386/cjm.2014.8872.871.at1cm2Thor, D. H., & Holloway, W. R. (1981). Persistence of social investigatory behavior in the male rat: Evidence for long-term memory of initial copulatory experience. Animal Learning & Behavior, 9(4), 561-565. https://doi.org/10.3758/BF03209791Tops, M., van Peer, J. M., Korf, J., Wijers, A. A., & Tucker, D. M. (2007). Anxiety, cortisol, and attachment predict plasma oxytocin. Psychophysiology, 44(3), 444-449. https://doi.org/10.1111/j.1469-8986.2007.00510.xVegiopoulos, A., & Herzig, S. (2007). Glucocorticoids, metabolism and metabolic diseases. Molecular and Cellular Endocrinology, 275(1-2), 43-61. https://doi.org/10.1016/j.mce.2007.05.015Vitousek, M. N., Johnson, M. A., Downs, C. J., Miller, E. T., Martin, L. B., Francis, C. D., Donald, J. W., Fuxjager, M. J., Goymann, W., Hau, M., Husak, J. F., Kircher, B. K., Knapp, R., Schoenle, L. A., & Williams, T. D. (2019). Macroevolutionary Patterning in Glucocorticoids Suggests Different Selective Pressures Shape Baseline and Stress-Induced Levels. The American Naturalist, 193(6), 866-880. https://doi.org/10.1086/703112Viviani, D., Charlet, A., Van Den Burg, E., Robinet, C., Hurni, N., Abatis, M., Magara, F., & Stoop, R. (2011). Oxytocin Selectively Gates Fear Responses Through Distinct Outputs from the Central Amygdala. Science, 333(6038), 104-107. https://doi.org/10.1126/science.1201043Wagner, J. E., Manning, P. J., & American College of Laboratory Animal Medicine. (1976). The biology of the guinea pig. Academic Press.Walum, H., & Young, L. J. (2018). The neural mechanisms and circuitry of the pair bond. Nature Reviews Neuroscience, 19(11), 643-654. https://doi.org/10.1038/s41583-018-0072-6Wang, L., Marti, D. W., & Anderson, R. E. (2019). Development and Validation of a Simple LC-MS Method for the Quantification of Oxytocin in Dog Saliva. Molecules (Basel, Switzerland), 24(17), 3079. https://doi.org/10.3390/molecules24173079Washington, I. M., & Van Hoosier, G. (2012). Clinical Biochemistry and Hematology. The Laboratory Rabbit, Guinea Pig, Hamster, and Other Rodents, 57-116. https://doi.org/10.1016/B978-0-12-380920-9.00003-1Willis, F. N., Levinson, D. M., & Buchanan, D. R. (1977). Development of Social Behavior in the Guinea Pig. The Psychological Record, 27(3), Article 3. https://doi.org/10.1007/BF03394474Windle, R. J., Shanks, N., Lightman, S. L., & Ingram, C. D. (1997). Central oxytocin administration reduces stress-induced corticosterone release and anxiety behavior in rats. Endocrinology, 138(7), 2829-2834. https://doi.org/10.1210/endo.138.7.5255Winslow, J. T. (2003). Mouse social recognition and preference. Current Protocols in Neuroscience, Chapter 8, Unit 8.16. https://doi.org/10.1002/0471142301.ns0816s22Yohn, C. N., Ashamalla, S. A., Bokka, L., Gergues, M. M., Garino, A., & Samuels, B. A. (2019). Social instability is an effective chronic stress paradigm for both male and female mice. Neuropharmacology, 160, 107780. https://doi.org/10.1016/j.neuropharm.2019.107780instname:Universidad del Rosarioreponame:Repositorio Institucional EdocURCambios en la composición de grupoCortisolEje HPAMecanismos endocrinológicosOrganización socialOxitocinaEndocrinological mechanismsChanges in group compositionCortisolHPA-axisOxytocinSocial organizationEffect of social instability on social recognition and partner preference in guinea pigs, Cavia porcellusEfecto de la inestabilidad social en el reconocimiento social y la preferencia por compañero en cuyes, Cavia porcellusbachelorThesisTrabajo de gradohttp://purl.org/coar/resource_type/c_7a1fFacultad de Ciencias NaturalesBogotáCC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-81160https://repository.urosario.edu.co/bitstreams/f2f186a8-1d56-4a64-b071-e4829aa44cfa/download5643bfd9bcf29d560eeec56d584edaa9MD53LICENSElicense.txtlicense.txttext/plain1483https://repository.urosario.edu.co/bitstreams/72cd97ba-8f17-44ba-8b44-2e3743ccaec8/downloadb2825df9f458e9d5d96ee8b7cd74fde6MD54ORIGINALEffect_of_social_instability_on_social_recognition_PantojaRuiz-Valentina-2025.pdfEffect_of_social_instability_on_social_recognition_PantojaRuiz-Valentina-2025.pdfapplication/pdf994024https://repository.urosario.edu.co/bitstreams/68561ba9-6939-4e09-b564-b5940fab51ba/download0e2faeeea7bd1ee3fe1d456165163e32MD55TEXTEffect_of_social_instability_on_social_recognition_PantojaRuiz-Valentina-2025.pdf.txtEffect_of_social_instability_on_social_recognition_PantojaRuiz-Valentina-2025.pdf.txtExtracted texttext/plain56965https://repository.urosario.edu.co/bitstreams/846e348b-72c5-4e93-866f-0fbad6d4f994/download740560d323f0f728862d4160d9c223feMD56THUMBNAILEffect_of_social_instability_on_social_recognition_PantojaRuiz-Valentina-2025.pdf.jpgEffect_of_social_instability_on_social_recognition_PantojaRuiz-Valentina-2025.pdf.jpgGenerated Thumbnailimage/jpeg2163https://repository.urosario.edu.co/bitstreams/805824a6-2500-4f73-ad53-4493f9a63f6c/download4d8c7e9f02546094303c63d3d45baca9MD5710336/45328oai:repository.urosario.edu.co:10336/453282025-05-16 03:01:20.038http://creativecommons.org/licenses/by-nc-sa/4.0/Attribution-NonCommercial-ShareAlike 4.0 Internationalhttps://repository.urosario.edu.coRepositorio institucional EdocURedocur@urosario.edu.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 |