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Marcelo Hector Ratto Fuster

Profesor titular

Universidad Austral de Chile

Valdivia, Chile

Hormonas cerebrales; Interacciones neuro-gliales; NeuropatologÃa hipofisiaria; Reproductive Physiology; Reproductive Endocrinology; Assisted Reproductive Technology

Reproduccion Animal, UNIVERSIDAD AUSTRAL DE CHILE. Chile, 1995
Medico Veterinario, UNIVERSIDAD DE CHILE. Chile, 1998
Reproduccion Animal, UNIVERSITY OF SASKATCHEWAN. Canada, 2005
Ginecologia, UNIVERSITY OF SASKATCHEWAN. Canada, 2007

Profesor Titular Full Time

UNIVERSIDAD AUSTRAL DE CHILE

Ciencias Veterinarias

Valdivia, Chile

2007 - A la fecha
Profesor Auxiliar Full Time

UNIVERSIDAD CATOLICA DE TEMUCO

Recursos Naturales

Temuco, Chile

1995 - 2007


Administration of Beta-Nerve Growth Factor during the Preovulatory Stage Improves Endocrine and Luteal Function in Dairy Heifers Gajardo, Gonzalo; Paiva, Luis; Ulloa-Leal, Cesar; Valderrama, Ximena; Lopez, Gerardo; Carrasco, Albert; Hidalgo, Alejandra Isabel; Silva, Mauricio E.; Palma, Patricio I.; Ratto, Marcelo H. Article ISI Animals (2023)
Characterization of proteases in the seminal plasma and spermatozoa of llama Sari, L.; Castro-Gonzalez, X.; Zampini, R.; Apichela, S.; Ratto, M.; Arganaraz, M. Article ISI THERIOGENOLOGY (2023)
Is seminal nerve growth factor-induced luteinizing hormone release in camelids mediated at the hypothalamus? Carrasco, Rodrigo A.; Pezo, Sergio; Zwiefelhofer, Eric M.; Lanigan, Emily E.; Singh, Jaswant; Berland, Marco A.; Ulloa-Leal, Cesar; Ratto, Marcelo H.; Adams, Gregg P. Article ISI REPRODUCTION (2023)
Ovulation Induced by Intrauterine Seminal Plasma Increases Total Protein, PGE2, IL-8, and IL-1β in Uterine Fluid of Llamas (Lama glama) Hidalgo, Alejandra Isabel; Ulloa-Leal, Cesar; Gajardo, Gonzalo; Lopez, Gerardo; Carretta, Daniella; Burgos, Rafael Agustin; Ratto, Marcelo Article ISI Animals (2023)
Effect of follicle size on <i>in vitro </i>maturation in alpaca oocytes (<i>Vicugna pacos</i>) and the first ICSI in alpaca species Castro-Modesto, Tania; Mamani, Patricia; Pella, Ricardo; Bravo, Zeze; Villarreal-Ugarte, Stefanny; Cancho, Christian; Aguila, Luis; Ratto, Marcelo H.; Valdivia, Martha Article ISI SMALL RUMINANT RESEARCH (2022)
Oocyte Quality, In Vitro Fertilization and Embryo Development of Alpaca Oocytes Collected by Ultrasound-Guided Follicular Aspiration or from Slaughterhouse Ovaries Landeo, Leandra; Zuniga, Michele; Gastelu, Teddy; Artica, Marino; Ruiz, Jaime; Silva, Mauricio; Ratto, Marcelo H. Article ISI Animals (2022)
Seminal plasma nerve growth factor signaling on the reproductive physiology of female llamas Paiva, Luis; Silva, Mauricio; Carrasco, Rodrigo; Ratto, Vicente; Goicochea, José; Ratto, Marcelo Article ISI ANIMAL REPRODUCTION (2022)
The ovulatory and luteotropic actions of the male-derived beta-nerve growth factor in South American camelids Paiva, Luis; Silva, Mauricio; Carrasco, Rodrigo; Hector Ratto, Marcelo Article ISI ANIMAL FRONTIERS (2022)
Differential Effects of Estradiol on Reproductive Function in Camelids Carrasco, Rodrigo A.; Ratto, Marcelo H.; Adams, Gregg P. Article ISI FRONTIERS IN VETERINARY SCIENCE (2021)
Distribution of GnRH and Kisspeptin Immunoreactivity in the Female Llama Hypothalamus Berland, Marco; Paiva, Luis; Alondra Santander, Lig; Hector Ratto, Marcelo Article ISI FRONTIERS IN VETERINARY SCIENCE (2021)
Effect of two fertilization medium on the in vitro development of Creole bovine embryos Goicochea Vargas, Jose; Rondon Jorge, Wilson; Acosta Pachorro, Fidel; Gomez Marin, Yusep; Montalvo Martin, Magaly; Salvatierra Alor, Max; Martel Falcon, Jessica; Ballarte Zevallos, Oscar; Diaz Zegarra, Julio; Ratto Fuster, Marcelo Article ISI REVISTA DE INVESTIGACIONES VETERINARIAS DEL PERU (2021)
Effects of NGF Addition on Llama (<i>Lama glama</i>) Sperm Traits After Cooling Sari, Luciana M.; Zampini, Renato; Gonzalez del Pino, Francisco; Arganaraz, Martin E.; Ratto, Marcelo H.; Apichela, Silvana A. Article ISI FRONTIERS IN VETERINARY SCIENCE (2021)
Heterologous beta-nerve growth factor (beta-NGF) given at the LH surge enhances luteal function in dairy heifers Gajardo, G.; Ulloa-Leal, C.; Valderrama, X.; Paiva, L.; Ratto, M. H. Article ISI DOMESTIC ANIMAL ENDOCRINOLOGY (2021)
Neuroanatomical basis of the nerve growth factor ovulation-induction pathway in Ilamas Carrasco, Rodrigo A.; Singh, Jaswant; Ratto, Marcelo H.; Adams, Gregg P. Article ISI BIOLOGY OF REPRODUCTION (2021)
New Insights Into the Role of β-NGF/TrKA System in the Endometrium of Alpacas During Early Pregnancy Barraza, Daniela E.; Sari, Luciana M.; Apichela, Silvana A.; Ratto, Marcelo H.; Arganaraz, Martin E. Article ISI FRONTIERS IN VETERINARY SCIENCE (2021)
beta-NGF Stimulates Steroidogenic Enzyme and VEGFA Gene Expression, and Progesterone Secretion via ERK 1/2 Pathway in Primary Culture of Llama Granulosa Cells Valderrama, Ximena; Ulloa-Leal, Cesar; Silva, Mauricio Erciario; Goicochea, Jose; Apichela, Silvana; Arganaraz, Martin; Sari, Luciana; Paiva, Luis; Ratto, Vicente Francisco; Ratto, Marcelo Hector Article ISI FRONTIERS IN VETERINARY SCIENCE (2020)
Effect of Different Levels of Energy Diet Restriction on Energy Balance, Leptin and CL Development, Vascularization, and Function in South American Camelids Norambuena, Cecilia; Hernandez, Francisca; Alfaro, Jorge; Silva, Gonzalo; Topp, Shirley; Ratto, Marcelo Article ISI FRONTIERS IN VETERINARY SCIENCE (2020)
Effect of mating on mRNA and protein expression of beta nerve growth factor and its receptor, TrKA, in the oviduct of llama (<i>Lama glama</i>) Sari, Luciana M.; Zampini, Renato; Arganaraz, Martin E.; Ratto, Marcelo H.; Apichela, Silvana A. Article ISI MOLECULAR REPRODUCTION AND DEVELOPMENT (2020)
Laterality of Ovulation and Presence of the Embryo Do Not Affect Uterine Horn Blood Flow During the First Month of Gestation in Llamas Ratto, Marcelo H.; Urra, Felipe; Silva, Mauricio Article ISI FRONTIERS IN VETERINARY SCIENCE (2020)
Ovulation mechanism in South American Camelids: The active role of β-NGF as the chemical signal eliciting ovulation in llamas and alpacas Silva, Mauricio; Paiva, Luis; Ratto, Marcelo H. Article ISI SCOPUS Theriogenology (2020)
Evaluation of the effect of mating, intrauterine deposition of raw seminal plasma or seminal plasma purified beta-NGF on endometrial vascularization in llamas Urra, F; Ratto MH; Silva, M Article ISI SCOPUS THERIOGENOLOGY (2019)
Functional expression of the free fatty acids receptor-1 and-4 (FFA1/GPR40 and FFA4/GPR120) in bovine endometrial cells Valenzuela, Pamela; Teuber, Stefanie; Manosalva, Carolina; Alarcón, Pablo; Figueroa, Carlos D.; Ratto, Marcelo; Burgos, Rafael A.; Hidalgo, Maria A. Article ISI SCOPUS VETERINARY RESEARCH COMMUNICATIONS (2019)
Expression of ?-NGF and high-affinity NGF receptor (TrKA) in llama (Lama glama) male reproductive tract and spermatozoa Sari L.M.; Zampini R.; ArgaÃ±araz M.E.; Carretero M.I.; Fumuso F.G.; Barraza D.E.; Ratto M.; Apichela S.A. Article ISI SCOPUS Molecular Reproduction and Development (2018)
Natural and controlled ovulation in South American camelids Adams G.P.; Ratto, M. H.; Carrasco R.A. Article ISI SCOPUS (2018)
Source and localization of ovulation-inducing factor/nerve growth factor in male reproductive tissues among mammalian species Bogle O.A.; Carrasco R.A.; Ratto, M. H.; Singh J.; Adams G.P. Article ISI SCOPUS Biology of Reproduction (2018)
Source and localization of ovulation-inducing factor/nerve growth factor in male reproductive tissues among mammalian species. Bogle, Orleigh A; Carrasco, Rodrigo A; Ratto, Marcelo H; Singh, Jaswant; Adams, Gregg P Article Biology of reproduction (2018)
A comparative study of the effects of intramuscular administration of gonadorelin, mating and intrauterine infusion of either raw seminal plasma or seminal plasma purified β-NGF on luteal development in llamas. Silva M, Urra F; Ulloa-Leal C, Ratto MH. Article REPRODUCTION IN DOMESTIC ANIMALS (2017)
A comparative study of the effects of intramuscular administration of gonadorelin, mating and intrauterine infusion of either raw seminal plasma or seminal plasma purified -NGF on luteal development in llamas Silva M.; Urra F.; Ulloa-Leal C.; Ratto M.H. Article ISI SCOPUS REPRODUCTION IN DOMESTIC ANIMALS (2017)
Butyrate concentration before and after calving is not associated with the odds of subclinical mastitis in grazing dairy cows Villa-Arcila N.A.; Duque-Madrid P.C.; Sanchez-Arias S.; Rodriguez-Lecompte J.C.; Ratto M.H. ; Sanchez J.; Ceballos-Marquez A. Article ISI SCOPUS LIVESTOCK SCIENCE (2017)
Effect of oocyte maturation time, sperm selection method and oxygen tension on in vitro em-bryo development in alpacas. Jaime Ruiz, Paulo Santayana R.; José Mendoza M., Leandra Landeo J.; Elizabeth Huamán, Flamel Ticllacuri; Fidel Mujica L., Mauricio Silva Article THERIOGENOLOGY (2017)
Effect of oocyte maturation time, sperm selection method and oxygen tension on in vitro embryo development in alpacas Ruiz J.; Paulo Santayana R.; José Mendoza M.; Leandra Landeo J.; Huamán E.; Ticllacuri F.; Fidel Mujica L.; Silva M.; Ratto M.H. Article ISI SCOPUS THERIOGENOLOGY (2017)
Nerve growth factor from seminal plasma origin (sp beta-NGF) increases CL vascularization and level of mRNA expression of steroidogenic enzymes during the early stage of Corpus Luteum development in llamas Silva M.; Ulloa-Leal C.; Valderrama X.P.; Bogle O.A.; Adams G.P.; Ratto M.H. Article ISI SCOPUS THERIOGENOLOGY (2017)
Nerve growth factor from seminal plasma origin (spβ-NGF) increases CL vascularization and level of mRNA expression of steroidogenic enzymes during the early stage of Corpus Luteum de-velopment in llamas. Silva M, Ulloa-Leal C; Valderrama X.P, Bogle O.A.; Adams G.P., Ratto M.H. Article THERIOGENOLOGY (2017)
The association between subclinical mastitis around calving and reproductive performance in grazing dairy cows Villa-Arcila N.A.; Sanchez J.; Ratto M.H. ; Rodriguez-Lecompte J.C.; Duque-Madrid P.C.; Sanchez-Arias S.; Ceballos-Marquez A. Article ISI SCOPUS ANIMAL REPRODUCTION SCIENCE (2017)
The association between subclinical mastitis around calving and reproductive performance in grazing dairy cows. Villa-Arcila, N A; Sanchez, J; Ratto, M H; Rodriguez-Lecompte, J C; Duque-Madrid, P C; Sanchez-Arias, S; Ceballos-Marquez, A Article Animal reproduction science (2017)
Ovulation-inducing factor (OIF/NGF) in seminal plasma=> a review and update. Adams, G P; Ratto, M H; Silva, M E; Carrasco, R A Article Reproduction in domestic animals = Zuchthygiene (2016)
Seminal Plasma Induces Ovulation in Llamas in the Absence of a Copulatory Stimulus=> Role of Nerve Growth Factor as an Ovulation-Inducing Factor. Marco A. Berland, Cesar Ulloa-Leal; Miguel Barría, Hollis Wright; Gregory A. Dissen, Mau-ricio E. Silva; Sergio R. Ojeda, Ratto M.H. Article ENDOCRINOLOGY (2016)
Tissue localization of GM-CSF receptor in bovine ovarian follicles and its role on glucose up-take by mural granulosa cells. Peralta OA, Bucher D; Angulo C, Castro MA; Ratto MH, Concha II. 2016. Article ANIMAL REPRODUCTION SCIENCE (2016)
Tissue localization of GM-CSF receptor in bovine ovarian follicles and its role on glucose uptake by mural granulosa cells Peralta, O. A.; Bucher D.; Angulo, C; Castro, M.A.; Ratto, M. H.; Concha, I Article ISI SCOPUS ANIMAL REPRODUCTION SCIENCE (2016)
In vitro developmental competence of alpaca (Vicugna pacos) and llama (Lama glama) oocytes after parthenogenetic activation Ruiz, J.; Landeo, L; Mendoza J.; Correa, J; Silva M.; Ratto MH Article ISI SCOPUS Small Ruminant Research (2015)
In vitro developmental competence of alpaca (Vicugna pacos) and llama (Lama glama) oocytes after parthenogenetic activation J. Ruiz, L. Landeo, J. Mendoza, J. Correa, M. Silva, M.H. Ratto. Article Small Ruminant Research (2015)
LH release and ovulatory response after intramuscular, intravenous, and intrauterine admin-istration of β-NGF of seminal plasma origin in female llamas. Silva M , Fernández A; Ulloa-Leal C, Adams GP; Berland MA, Ratto MH Article THERIOGENOLOGY (2015)
LH release and ovulatory response after intramuscular, intravenous, and intrauterine administration of beta-nerve growth factor of seminal plasma origin in female llamas Silva M.; Fernandez A.; Ulloa-Leal, C; Adams, GP; Berland, MA; Ratto MH Article ISI SCOPUS Theriogenology (2015)
LH release and ovulatory response after intramuscular, intravenous, and intrauterine administration of beta-NGF of seminal plasma origin in female llamas. M. Silva1, A. Fernández2, C. Ulloa-Leal3, G.P. Adams4, M.A. Berland2, M.H. Ratto25* Article Theriogenology (2015)
LH release and ovulatory response after intramuscular, intravenous, and intrauterine administration of Î²-nerve growth factor of seminal plasma origin in female llamas. Silva, M; Fernández, A; Ulloa-Leal, C; Adams, G P; Berland, M A; Ratto, M H Article Theriogenology (2015)
Luteotrophic effect of ovulation-inducing factor/nerve growth factor present in the seminal plasma of llamas. Ulloa-Leal C, Bogle OA, Adams GP, Ratto MH. Article Theriogenology (2014)
Luteotrophic effect of ovulation-inducing factor/nerve growth factor present in the seminal plasma of llamas Ulloa-Leal, C.; Bogle O.A.; Adams G.P.; Ratto, M. H. Article SCOPUS Theriogenology (2014)
Luteotrophic effect of ovulation-inducing factor/nerve growth factor present in the seminal plasma of llamas. Ulloa-Leal, C; Bogle, O A; Adams, G P; Ratto, M H Article Theriogenology (2014)
OIF/NGF) from seminal plasma origin enhances Corpus Luteum function in llamas regardless the preovulatory follicle diameter. Silva M, Ulloa-Leal C, Norambuena C, Fernández A, Adams GP, Ratto MH. Article Animal Reproduction Science (2014)
Ovulation-inducing factor (OIF/NGF) from seminal plasma origin enhances Corpus Luteum function in llamas regardless the preovulatory follicle diameter Silva M.; Ulloa-Leal, C; Norambuena C.; Fernandez A.; Adams, GP; Ratto MH Article ISI SCOPUS ANIMAL REPRODUCTION SCIENCE (2014)
Ovulation-inducing factor (OIF/NGF) from seminal plasma origin enhances Corpus Luteum function in llamas regardless the preovulatory follicle diameter. Silva M, Ulloa-Leal C; Norambuena C, Fernández A; Adams GP, Ratto MH. Article ANIMAL REPRODUCTION SCIENCE (2014)
The effect of repeated administrations of llama ovulation-inducing factor (OIF/NGF) during the peri-ovulatory period on corpus luteum development and function in llamas A. Fernández, C. Ulloa-Leal, M. Silva, C. Norambuena, G.P. Adams, M. Guerra, M.H. Ratto. Article Animal Reproduction Science (2014)
The effect of repeated administrations of llama ovulation-inducing factor (OIF/NGF) during the peri-ovulatory period on corpus luteum development and function in llamas Fernandez A.; Ulloa-Leal, C; Silva M.; Norambuena C.; Adams, GP; Guerra, M; Ratto MH Article ISI SCOPUS ANIMAL REPRODUCTION SCIENCE (2014)
The effect of repeated administrations of llama ovulation-inducing factor (OIF/NGF) during the peri-ovulatory period on corpus luteum development and function in llamas. Fernández, A; Ulloa-Leal, C; Silva, M; Norambuena, C; Adams, G P; Guerra, M; Ratto, M H Article Animal reproduction science (2014)
Use of hypometabolic TRIS extenders and high cooling rate refrigera-tion for cryopreservation of stallion sperm: presence and sensitivity of 5' AMP-activated protein kinase (AMPK) Alex Córdova, Pablo Strobel, Omar Ulloa, Javier Urra, Carlos Contreras, Pamela Valenzuela, Alejandra Carrillo, Rafael Burgos, Bruno Menarim, Marcelo Ratto, Enric Rodríguez-Gil Joan, Ramírez Alfredo. Article Cryobiology (2014)
Use of hypometabolic TRIS extenders and high cooling rate refrigeration for cryopreservation of stallion sperm: Presence and sensitivity of 5' AMP-activated protein kinase (AMPK) Cordova A.; Strobel P.; Vallejo A.; Valenzuela P.; Ulloa, O.; Burgos, RA; Menarim, B; Rodriguez-Gil, JE; Ratto M.; Ramirez-Reveco, A Article ISI SCOPUS CRYOBIOLOGY (2014)
Effects of nutritional restriction on metabolic, endocrine, and ovarian function in llamas (Lama glama) Norambuena, MC; Silva M.; Urra, F.; Ulloa-Leal, C; Fernandez A.; Adams, GP; Huanca, W; Ratto MH Article ISI SCOPUS Animal Reproduction Science (2013)
Effects of nutritional restriction on metabolic, endocrine, and ovarian function in llamas (Lama glama). Norambuena MC, Silva EM, Urra F, Ulloa-Leal C, Fernandez A, Adams GP, Huanca W, Ratto MH. Article Animal Reproduction Science (2013)
Effects of nutritional restriction on metabolic, endocrine, and ovarian function in llamas (Lama glama). Norambuena, M C; Silva, M; Urra, F; Ulloa-Leal, C; Fernández, A; Adams, G P; Huanca, W; Ratto, M H Article Animal reproduction science (2013)
Granulocyte-macrophage colony stimulating factor (GM-CSF) enhances cumulus cell expansion in bovine oocytes Peralta, OA; Bucher D.; Fernandez A.; Berland M.; Strobel P.; Ramirez A.; Ratto MH; Concha, I Article ISI REPRODUCTIVE BIOLOGY AND ENDOCRINOLOGY (2013)
Granulocyte-macrophage colony stimulating factor (GM-CSF) enhances cumulus cell expansion in bovine oocytes. Peralta, Oscar A; Bucher, Danai; Fernandez, Ana; Berland, Marco; Strobel, Pablo; Ramirez, Alfredo; Ratto, Marcelo H; Concha, Ilona Article Reproductive biology and endocrinology => RB&E (2013)
Granulocyte-macrophage colony stimulating factor (GM-CSF) enhances cumulus cell expansion in bovine oocytes. Reproductive Biology and Endocrinology Bucher D, Peralta O.A., Fernandez A, Berland M.O., Strobel P., Ramirez A., Ratto M.H., Concha I. Article Reproductiv Biology and Endocrinology (2013)
Induction of superovulation in South American Camelids Ratto MH, Silva EM, Huanca W, Huanca T, Adams GP. Article Animal Reproduction Science (2013)
Induction of superovulation in South American Camelids Ratto MH, Silva EM, Huanca W, Huanca T, Adams GP. Article Animal Reproduction Science (2013)
Induction of superovulation in South American camelids. Ratto, Marcelo H; Silva, Mauricio E; Huanca, Wilfredo; Huanca, Teodosio; Adams, Gregg P Article Animal reproduction science (2013)
Ovulation-inducing factor in seminal plasma: A review. Adams GP, Ratto MH. Article Animal Reproduction Science (2013)
Ovulation-inducing factor in seminal plasma=> a review. Adams, Gregg P; Ratto, Marcelo H Article Animal reproduction science (2013)
Relationship between systemic leptin concentration and reproductive state in llamas (Lama glama) from southern Chile Norambuena, MC; Gomez Y.; Ulloa-Leal, C; Fernandez A.; von Baer, A; Ratto M. Article ISI SCOPUS Small Ruminant Research (2013)
Relationship between systemic leptin concentration, and reproductive state in llamas (Lama glama) from southern Chile Norambuena M.C., Gómez Y., Ulloa-Leal C., Fernández A., Von Baer A., Ratto MH Article Small Ruminant Research (2013)
Vitrification of in vitro mature alpaca oocyte: Effect of ethylene glycol concentration and time of exposure in the equilibration and vitrification solutions Ruiz, J.; Landeo, L; Mendoza J.; Artica, M; Correa, JE; Silva M.; Miragaya, M; Ratto MH Article ISI SCOPUS Animal Reproduction Science (2013)
Vitrification of in vitro mature alpaca oocyte: Effect of ethylene glycol concentration and time of exposure in the equilibration and vitrification solutions. Ruiz J, Landeo L, Mendoza J, Artica M, Correa J, Silva M, Miragaya M, Ratto MH. Article Animal Reproduction Science (2013)
Vitrification of in vitro mature alpaca oocyte=> effect of ethylene glycol concentration and time of exposure in the equilibration and vitrification solutions. Ruiz, J; Landeo, L; Mendoza, J; Artica, M; Correa, J E; Silva, M; Miragaya, M; Ratto, M H Article Animal reproduction science (2013)
GnRH dose reduction decreases pituitary LH release and ovulatory response but does not affect CL development and function in llamas. Silva M, Colazo G, Ratto MH. Article Theriogenology (2012)
Ovarian estradiol modulates the stimulatory effect of ovulation-inducing factor (OIF) on pituitary LH secretion in llamas . Silva M, Recabarren M, Recabarren S, Adams GP, Ratto MH. Article Theriogenology (2012)
Ovulation-inducing factor (OIF) induces LH secretion from pituitary cells. Bogle OA, Ratto MH, Adams GP. 133: 117-122. Article Animal Reproduction Science (2012)
Effect of purified llama ovulation-inducing factor (OIF) on ovarian function in cattle Tanco V.M.; Van Steelandt M.D.; Ratto, M. H.; Adams G.P. Article ISI SCOPUS Theriogenology (2012)
Effect of purified llama ovulation-inducing factor (OIF) on ovarian function in cattle. . Tanco VM, Van Steelandt MD, Ratto MH, Adams GP Article Theriogenology (2012)
GnRH dose reduction decreases pituitary LH release and ovulatory response but does not affect corpus luteum (CL) development and function in llamas Silva, M. E; Colazo M.G.; Ratto, M. H. Article ISI SCOPUS Theriogenology (2012)
Ovarian estradiol modulates the stimulatory effect of ovulation-inducing factor (OIF) on pituitary LH secretion in llamas Silva, M. E; Recabarren M.P.; Recabarren S.E.; Adams G.P.; Ratto, M. H. Article ISI SCOPUS Theriogenology (2012)
Ovulation-inducing factor (OIF) induces LH secretion from pituitary cells Bogle O.A.; Ratto, M. H.; Adams G.P. Article ISI SCOPUS Animal Reproduction Science (2012)
The Nerve of Ovulation Inducing Factor. Ratto MH, Leduc Y., Valderrama X.P., van Straaten K., Delbaere L, Pierson R, Adams GP. 2012. Article The Proceedings National of Academy of Sciences of United States of America 109, 37: 15042-15047. (2012)
The nerve of ovulation-inducing factor in semen Ratto, M. H.; Leduc Y.A.; Valderrama X.P.; Van Straaten K.E.; Delbaere L.T.J.; Pierson R.A.; Adams G.P. Article ISI SCOPUS Proceedings of the National Academy of Sciences of the United States of America (2012)
In vitro fertilization and development of cumulus oocytes complexes collected by ultra-sound-guided follicle aspiration in superstimulated llamas. M.A. Berland, A. von Baer, J. Ruiz, V.H. Parraguez, P. Morales, G.P. Adams, M.H. Ratto. Article Theriogenology (2011)
Transvaginal ultrasound- guided cumulus oocyte complexes aspiration and in vitro embryo production in suckled beef and lactating dairy cattle on pasture-based management conditions. Ratto MH, Peralta OA, Mogollon G, Strobel P, Correa JE. Article Animal Reproduction Science (2011)
Activación Quimica de ovocitos de alpaca vitrificados despues de la maduracion in vitro Jaime Ruiz, Leandra Landeo, Marino Artica, Marcelo H Ratto, Jorge Correa Article Rev Inv Vet Peru (2011)
Biochemical isolation and purification of ovulation-inducing factor (OIF) in seminal plasma of llamas Ratto, M. H.; Delbaere L.T.J.; Leduc Y.A.; Pierson R.A.; Adams G.P. Article ISI SCOPUS Reproductive Biology and Endocrinology (2011)
Biochemical isolation and purification of ovulation-inducing factor (OIF) in seminal plasma of llamas. Ratto, Marcelo H; Delbaere, Louis T J; Leduc, Yvonne A; Pierson, Roger A; Adams, Gregg P Article Reproductive biology and endocrinology => RB&E (2011)
Biochemical isolation and purification of ovulation-inducing factor (OIF) in seminal plasma of llamas. Ratto MH, Delbaere LTJ, Leduc YA, Pierson RA, Adams GP Article Reproductive Biology and Endocrinology (2011)
Cetrorelix suppresses the preovulatory LH surge and ovulation induced by ovulation-inducing factor (OIF) present in llama seminal plasma Silva, ME; Smulders, JP; Guerra, M; Valderrama, XP; Letelier C.; Adams, GP; Ratto MH Article ISI SCOPUS Reproductive Biology and Endocrinology (2011)
Cetrorelix suppresses the preovulatory LH surge and ovulation induced by ovulation-inducing factor (OIF) present in llama seminal plasma. Silva M, Smulders JP, Guerra M, Valderrama XP, Letelier C, Adams GP, Ratto MH Article Reproductive Biology and Endocrinology (2011)
Chemical activation of alpaca oocyte after in vitro maturation. Ruiz J, Landeo L, Artica M, Ratto MH, Correa JE Article Rev Inv Vet Perú (2011)
Dose Response of Female Llamas to Ovulation-Inducing Factor (OIF) from Seminal Plasma. Tanco V, Ratto M H., Lazzarotto M, G P. Adams Article Biology of Reproduction (2011)
Effect of location and stage of development of dominant follicle on ovulation and embryo survival rate in alpacas Ratto M.; Cervantes, M; Norambuena C.; Silva M.; Miragaya, M; Huanca, W Article ISI SCOPUS Animal Reproduction Science (2011)
Effect of location and stage of development of dominant follicle on ovulation and embryo survival rate in alpacas. Ratto MH, Cervantes M, Norambuena C, Silva M, Miragaya M, W Huanca. Article Animal Reproduction Science (2011)
Evidence for the conservation of biological activity of ovulation-inducing factor (OIF) in the seminal plasma. Boogle O, Ratto MH, G P Adams. Article Reproduction (2011)
Evidence for the conservation of biological activity of ovulation-inducing factor in seminal plasma Bogle, OA; Ratto MH; Adams, GP Article ISI SCOPUS Reproduction (2011)
Expression of functional melatonin MT1 receptors in equine luteal cells: in vitro effects of melatonin on progesterone secretion Pedreros, M; Ratto M.; Guerra, M Article ISI SCOPUS Reproduction, Fertility and Development (2011)
In vitro fertilization and development of cumulus oocytes complexes collected by ultrasound-guided follicle aspiration in superstimulated llamas Berland, MA; von Baer, A; Ruiz, J.; Parraguez, VH; Morales P.; Adams, GP; Ratto MH Article ISI SCOPUS Theriogenology (2011)
Is an ovulation-inducing factor (OIF) present in the seminal plasma of rabbits? Silva M.; Nino A.; Guerra, M; Letelier C.; Valderrama, XP; Adams, GP; Ratto MH Article ISI SCOPUS Animal Reproduction Science (2011)
Is an ovulation-inducing factor (OIF) present in the seminal plasma of rabbits? Silva M., Niño A, Guerra M., Letelier C, Valderrama X.P., Adams G.P. Adams, Ratto MH. Article Animal Reproduction Science (2011)
The effect of time exposure interval of bovine oocytes to sperm on embryo development rate and quality MA Berland, M Frei, O Peralta, MH Ratto. Article ISNR Veterinary Science (2011)
Transvaginal ultrasound-guided cumulus oocyte complexes aspiration and in vitro embryo production in suckled beef and lactating dairy cattle on pasture-based management conditions Ratto MH; Peralta, OA; Mogollon G.; Strobel P.; Correa, J Article ISI SCOPUS Animal Reproduction Science (2011)
Transvaginal ultrasound-guided cumulus oocyte complexes aspiration and in vitro embryo production in suckled beef and lactating dairy cattle on pasture-based management conditions Ratto, MH; Peralta OA, Mogollon G.; Strobel, P Article Animal Reproduction Science (2011)
Expression of functional MT1 melatonin receptors in equine luteal cells: in vitro effects of melatonin on progesterone release. Pedreros M, Ratto MH, Guerra M. Article Reproduction, Fertility and Development (2010)
Ovulation-inducing factor: a protein component of llama seminal plasma Ratto MH; Huanca, W; Adams, GP Article ISI SCOPUS Reproductive Biology and Endocrinology (2010)
Ovulation-inducing factor: a protein component of llama seminal plasma. Ratto M H, Huanca, Adams G P Article Reproductive Biology and Endocrinology (2010)
Ovulation-inducing factor=> a protein component of llama seminal plasma. Ratto, Marcelo H; Huanca, Wilfredo; Adams, Gregg P Article Reproductive biology and endocrinology => RB&E (2010)
Ovarian response and embryo production in llamas treated with eCG alone or with progestin vaginal sponges at the time of follicular wave emergence. Huanca W, Cordero A., Huanca T., Cardenas O., Adams G.P., Ratto M.H. Article Theriogenology (2009)
Artificial insemination in South American camelids and wild equids Adams, GP; Ratto MH; Collins, CW; Bergfelt, DR Article ISI SCOPUS THERIOGENOLOGY (2009)
Artificial insemination in South American camelids and wild equids Adams, GP; Ratto, MH; Collins, CW; Bergfelt, DR Article Theriogenology (2009)
Artificial insemination in South American camelids and wild equids. Adams, G P; Ratto, M H; Collins, C W; Bergfelt, D R Article Theriogenology (2009)
Artificial Insemination in South American Camelids and Wild Equids. Adams G.P., Ratto M.H., Collins C.W., Bergfelt D Article Theriogenology (2009)
Efecto del sitio de administración del plasma seminal sobre la tasa de ovulacion y formación de Cuerpo Luteo en alpacas Susan Panez, Wilfredo Huanca, Teodosio Huanca, Marcelo H Ratto, Gregg P Adams Article Rev Inv Vet Peru (2009)
Ovarian response and embryo production in llamas treated with equine chorionic gonadotropin alone or with a progestin-releasing vaginal sponge at the time of follicular wave emergence Huanca, W; Cordero A.; Huanca, T.; Cardenas O.; Adams, GR; Ratto MH Article ISI SCOPUS THERIOGENOLOGY (2009)
Ovarian response and embryo production in llamas treated with equine chorionic gonadotropin alone or with a progestin-releasing vaginal sponge at the time of follicular wave emergence Huanca, W; Cordero, A; Huanca, T; Cardenas, O; Adams, GR; Ratto, MH Article Theriogenology (2009)
Ovarian response and embryo production in llamas treated with equine chorionic gonadotropin alone or with a progestin-releasing vaginal sponge at the time of follicular wave emergence. Huanca, W; Cordero, A; Huanca, T; Cardenas, O; Adams, G P; Ratto, M H Article Theriogenology (2009)
Sperm from hyh mice carrying a point mutation in αSNA1 P have a defect in acrosome reaction. PLoS ONE, e4963. Luis Federico Bátiz, Gerardo A. De Blas, Marcela A. Michaut, Alfredo R., Ramírez, Facundo Rodríguez, Marcelo H. Ratto, Cristian Oliver, Claudia N. Tomes, Esteban M. Rodríguez, and Luis S. Mayorga Article PLoS ONE (2009)
Sperm from Hyh Mice Carrying a Point Mutation in alpha SNAP Have a Defect in Acrosome Reaction Batiz, LF; De Blas, GA; Michaut, MA; Ramirez, AR; Rodriguez,F; Ratto MH; Oliver C.; Tomes, CN; Rodriguez, EM; Mayorga, LS Article ISI SCOPUS PLOS ONE (2009)
Sperm from hyh mice carrying a point mutation in alphaSNAP have a defect in acrosome reaction. Bátiz, Luis Federico; De Blas, Gerardo A; Michaut, Marcela A; Ramírez, Alfredo R; Rodríguez, Facundo; Ratto, Marcelo H; Oliver, Cristian; Tomes, Claudia N; Rodríguez, Esteban M; Mayorga, Luis S Article PloS one (2009)
Efecto de fracciones del plasma seminal, segun su peso molecular, sobre la inducción de ovulacion en llamas (lama glama) Martha Vasquez, Wilfredo Huanca, Teodosio Huanca, Marcelo H Ratto, Gregg P Adams Article Rev Inv Vet Peru (2008)
Effect of ovarian superstimulation on COC collection and maturation in alpacas Ratto M.; Gómez C; Berland M.; Adams, GP Article ISI SCOPUS ANIMAL REPRODUCTION SCIENCE (2007)
Comparison of the effect of ovulation-inducing factor (OIF) in the seminal plasma of llamas, alpacas, and bulls. Ratto, Marcelo H; Huanca, Wilfredo; Singh, Jaswant; Adams, Gregg P Article Theriogenology (2006)
In vitro and in vivo maturation of llama oocytes Ratto M.; Berland M.; Huanca, W; Singh J.; Adams, GP Article ISI SCOPUS THERIOGENOLOGY (2005)
Local versus systemic effect of ovulation-inducing factor in the seminal plasma of alpacas. Ratto, Marcelo H; Huanca, Wilfredo; Singh, Jaswant; Adams, Gregg P Article Reproductive biology and endocrinology => RB&E (2005)
Ovulation-inducing factor in the seminal plasma of alpacas and llamas. Adams, Gregg P; Ratto, Marcelo H; Huanca, Wilfredo; Singh, Jaswant Article Biology of reproduction (2005)
Ovarian follicular wave synchronization and pregnancy rate after fixed-time natural mating in llamas. Ratto, M H; Singh, J; Huanca, W; Adams, G P Article Theriogenology (2003)
Superovulation in llamas (Lama glama) with pFSH and equine chorionic gonadotrophin used individually or in combination. Correa, J E; Ratto, M H; Gatica, R Article Animal reproduction science (1997)
Timing of mating and ovarian response in llamas (Lama glama) treated with pFSH. Ratto, M H; Gatica, R; Correa, J E Article Animal reproduction science (1997)
Oocyte quality, in vitro fertilization and embryo development of alpaca oocytes collected by ultrasound-guided follicular aspiration. Article


DETECTION OF BIOTINYLATED-OVULATION-INDUCING FACTOR (OIF) IN CEREBROSPINAL FLUID AND ITS ABILITY TO INDUCE OVULATION Berland M.; Guerra, M; Bogle, OA; Vio, K; Adams, GP; Ratto M. Abstract ISI REPRODUCTION FERTILITY AND DEVELOPMENT (2013)
EFFECT OF OVULATION-INDUCING FACTOR ON DEVELOPMENT AND VASCULAR PERFUSION OF THE OVULATORY FOLLICLE AND CORPUS LUTEUM IN LLAMAS Ulloa-Leal, C; Bogle, O; Adams, GP; Ratto M. Abstract ISI REPRODUCTION FERTILITY AND DEVELOPMENT (2013)
EFFECTS OF LONG-TERM NUTRITIONAL RESTRICTION ON PREOVULATORY LUTEINIZING HORMONE SURGE, LEPTIN, AND LUTEAL PHASE IN LLAMAS (LAMA GLAMA) Norambuena, MC; Silva M.; Urra, F.; Ulloa-Leal, C; Letelier C.; Fernandez A.; Adams, GP; Ratto MH Abstract ISI REPRODUCTION FERTILITY AND DEVELOPMENT (2013)
Relationship between pre-ovulatory follicle diameter and corpus luteum size and function after ovulation induction with GnRH or ovulation-inducing factor in llamas Silva M.; Adams, G.; Ratto M. Abstract ISI REPRODUCTION IN DOMESTIC ANIMALS (2012)
DELETERIOUS EFFECTS OF PROGESTAGEN TREATMENT ON FUNCTIONALITY OF PREOVULATORY FOLLICLES IN SHEEP Letelier C.; Garcia-Fernandez, RA; Garcia-Garcia, RM; Arias-Alvarez, M; Contreras-Solis, I; Sánchez MA; Ratto M.; Flores, JM; Gonzalez-Bulnes, A Abstract ISI REPRODUCTION FERTILITY AND DEVELOPMENT (2010)
EFFECT OF LOCATION AND STAGE OF THE DOMINANT FOLLICLE ON OVULATION AND PREGNANCY RATES IN ALPACAS Cervantes, M; Huanca, W; Cordero A.; Guerra, M; Valderrama, XP; Ratto MH Abstract ISI REPRODUCTION FERTILITY AND DEVELOPMENT (2010)
EFFECT OF SYNTHETIC OVIDUCT FLUID MEDIUM (SOF) v. OPTIMIZED SIMPLE POTASSIUM MEDIUM (KSOM) ON EMBRYO DEVELOPMENT OF IN VITRO-FERTILIZED BOVINE OOCYTES Zapata, J; Fernandez F.; Berland, MA; Colazo, M; Peralta O.; Felmer R.; Ratto MH Abstract ISI REPRODUCTION FERTILITY AND DEVELOPMENT (2010)
GRANULOCYTE-MACROPHAGE COLONY STIMULATNG FACTOR (GM-CSF) ENHANCES CUMULUS CELLS EXPANSION OF IN VITRO-MATURED BOVINE CUMULUS-OOCYTE COMPLEXES IN A CHEMICALLY DEFINED MEDIUM Bucher, DD; Castro MA; Silva, ME; Berland, MA; Concha, II; Ratto MH Abstract ISI REPRODUCTION FERTILITY AND DEVELOPMENT (2010)
IN VITRO FERTILIZATION AND EMBRYO DEVELOPMENT OF CUMULUS-OOCYTE COMPLEXES COLLECTED BY ULTRASOUND-GUIDED FOLLICULAR ASPIRATION IN LLAMAS TREATED WITH GONADOTROPIN Berland, MA; von Baer, A; Parraguez V.; Morales P.; Adams, GP; Silva, ME; Ruiz, J.; Ratto MH Abstract ISI REPRODUCTION FERTILITY AND DEVELOPMENT (2010)
Is Ovulation-Inducing Factor Present in the Seminal Plasma of Rabbits? Silva, ME; Nino, MA; Letelier C.; Godoy, RH; Adams, GP; Ratto MH Abstract ISI BIOLOGY OF REPRODUCTION (2010)
THE EFFECT OF TREATMENT WITH VARIOUS DOSES OF A SYNTHETIC GONADOTROPIN-RELEASING HORMONE ON INDUCTION OF OVULATION IN LLAMAS Silva, ME; Letelier C.; Dalmazo, PF; Nino, MA; Ratto MH Abstract ISI REPRODUCTION FERTILITY AND DEVELOPMENT (2010)
Biological characterization of an ovulation-inducing factor (OIF) isolated from the seminal plasma of llamas Ratto M.; Huanca, W; Adams, GP Abstract ISI REPRODUCTION IN DOMESTIC ANIMALS (2008)


Dairy science and health in the tropics: challenges and opportunities for the next decades HernÃ¡ndez-Castellano L.E.; Nally J.E.; Lindahl J.; Wanapat M.; Alhidary I.A.; Fangueiro D.; Grace D.; Ratto M.; Bambou J.C.; de Almeida A.M. Editorial ISI SCOPUS TROPICAL ANIMAL HEALTH AND PRODUCTION (2019)


Unveilling the luteotrophic effect of the ovulation inducing factor beta Nerve Growth Factor present in the seminal plasma of llamas FONDECYT (1160934) Proyecto 2016-2019 Inv. Principal
Estudio de receptores uterinos de estradiol, oxitocina y prostaglandina en llamas Universidad Hermilio Valdizan (sin codigo) Proyecto 2015-2016 Coinvestigador(a)
''Desarrollo de un biomarcador en sangre como indicador de la función metabólica - inmune en vacas lecheras'' FONDEF (FONDEF ID1) Proyecto 2014-2016 Coinvestigador(a)
''Estudio de la conducta de Estro en vacas de Leche en Pastura, y su relación con variables hormonales, metabólicas y reproductivas FONDECYT (3140139) Proyecto 2014-2017 Inv. Patrocinante
Estudio de la conducta del estro en vacas de leche en pastura y su relación con variables hormonales, metabólicas y reproductivas FONDECYT (3140139) Proyecto 2014-2016 Inv. Responsable
Follicular dynamics in tropical sheep Ross University School of Veterinary Medicine (Sin codigo) Proyecto 2014-2016 Inv. Principal
Central and Local effects of an ovulation inducing factor present in the seminal plasma of Camelids FONDECYT (1120518) Proyecto 2012-2015 Inv. Principal
Desarrollo de un laboratorio de endocrinologia para las especies domesticas y silvestre FONDEF (Fondequip) Proyecto 2012-2013 Inv. Principal
''Generación de un banco de semen de caballos fina sangre de tiro pesado, a partir del diseño de protocolos de criopreservación para uso en inseminación artificial (IA) en el plan nacional de fomento equino (PNFE)''. FONDEF (D08I1076) Proyecto 2010-2013 Coinvestigador(a)
Relación de Leptina con el estado nutricional y reproductivo de camélidos sudamericanos''. FONDECYT (3110095) Proyecto 2010-2012 Inv. Patrocinante
"Análisis de marcadores de crecimiento IGF-2 y H19 enblastocistos producidos in vitro utilizando espermatozoides sexados por citometría de flujo". Universidad Austral de Chile (DID- UACh S-2009-26) Proyecto 2009-2011 Coinvestigador(a)
Biological and functional characterization of an ovulation inducing factor present in the seminal plasma of Camelids. FONDECYT (11080141) Proyecto 2008-2011 Inv. Principal
“Caracterización funcional de un factor inductor de ovulación presente en el plasma seminal de llamas” Universidad Austral de Chile (DID- UACh S-2008-37) Proyecto 2008-2011 Inv. Principal
“Desarrollo de un grupo multidisciplinario para el estudio del desarrollo embrionario de bovinos in vitro y estudios de mecanismos de ovulación en camélidos” Universidad Católica de Temuco DGI-CDA-04. (DGI-CDA-04) Proyecto 2008-2011 Inv. Principal
Biotecnologias Reproductivas en Camelidos Sudamericanos INCAGRO- Ministerio de Agricultura del Peru Proyecto 2006-2008 Coinvestigador(a)
Molecular characterization of an ovulation-inducing factor in the seminal plasma of Camelids. Canadian Alpaca-Llama Association Proyecto 2006-2008 Coinvestigador(a)
Aspiración folicular y fecundación in vitro en bovinos Fondo de Investigación Agraria (FIA) Proyecto 2001-2004 Personal técnico y/o de apoyo
Produccion in vitro de embriones de bovino Universidad Católica de Temuco Proyecto 1998-1999 Inv. Principal
Vitrificacion de embriones de bovinos Universidad Católica de Temuco Proyecto 1995-1996 Inv. Principal


Review: Unveiling the effect of beta-nerve growth factor on the reproductive function in llamas and cows Ratto, Marcelo H.; Paiva, Luis; Carrasco, Rodrigo; Silva, Mauricio E.; Ulloa-Leal, Cesar; Ratto, Vicente F.; Goicochea, Jose Review ISI ANIMAL (2023)
New insights of the role of beta-NGF in the ovulation mechanism of induced ovulating species Ratto MH; Berland, M; Silva, ME; Adams, GP Review ISI SCOPUS REPRODUCTION (2019)
Ovulation-inducing factor in seminal plasma: A review Adams, GP; Ratto MH Review ISI SCOPUS Animal Reproduction Science (2013)