Reprobio in the Camino! (Way of St. James in Navarre, Spain)

Because solitude and meditation are the way to better experimental design and refined analysis!

Dr. Martínez-Pastor in the way from Puente La Reina to Estella (Navarre)

Dr. Martínez-Pastor in the way from Puente La Reina to Estella (Navarre)

Contributions to the International Congress on Animal Reproduction

Last June, we attended the 18th International Congress on Animal Reproduction (ICAR). This meeting congregated researchers and practicioners on animal reproduction all around the world, with sessions and workshops from the 26th to the 30th June. It was a wonderful ocassion to present some of our newest findings, discuss them with renowed experts and meet colleagues and friends.

The congress took place in Tours, a beautiful city in the Loire Valley.

We contributed with four poster communications:

Balmori-Roiz, T A, Fernández-Alegre, E, Casao, A, Cebrián-Pérez, J A, Martínez-Pastor, F. The localization of melatonin receptors MT1 and MT2 on the bull sperm membrane changes after incubation in capacitating and non-capacitating conditions.

del Olmo, E, Urbano, M, Martínez-Pastor, F, Iniesta-Cuerda, M, García-Alvarez, O, Maroto-Morales, A, Soler, A J, Johannisson, A, Morrell, J M, Garde, J J, Fernández-Santos, M R. Estrous sheep serum reduces spermatozoa mitochondrial ROS production during in vitro procedures.

Justel, V, Gutiérrez-Díaz, I, Fernández-Alegre, E, Alonso, M E, Fernández-Rodríguez, V, Rodríguez-Gutiérrez, P, Johannisson, A, Morrell, J M, Martínez-Pastor, F. Abundance of disulphide bridges in the head of bull spermatozoa is related to male fertility and SCSA variables.

Castañeda, A, Crespo-Félez, I, Fernández-Alegre, E, González, R, Domínguez, J C, Morrell, J M, Martínez-Pastor, F. Effect of Single Layer Centrifugation (SLC) with different proportions of Androcoll-P (70%, 80% and 90%) in the recovery and quality of cryopreserved boar semen.

Already looking for the 2020 meeting in Bologna!

Máster en Investigación en Biología Fundamental y Biomedicina

El Profesor Felipe Martínez participa en el Máster en Investigación en Biología Fundamental y Biomedicina de la Universidad de León. Este máster proporciona especialización en el campo de la biología celular y molecular, con una clara orientación al campo biomédico e investigador. Orientado a egresados de Licenciatura o Grado en Biología, Biotecnología, Veterinaria, Farmacia y afines con vocación de ingresar en empresas biotecnológicas o en realizar su tesis doctoral en el campo biomédico.

En la ciudad de la Pulchra Leonina y a un paso del Parque Biotecnológico de León.

The Master in Fundamental Biology and Biomedicine Research is an official degree from University of León aimed to provide especialized training in experimental techniques to students who want to accomplish research tasks in subjects related with fundamental biology and biomedicine.


Máster en Investigación en Biología Fundamental y Biomedicina

Máster en Investigación en Biología Fundamental y Biomedicina


@unileon #leonesp

ASEBIR meeting, San Sebastián (Spain)

We are just back from the ASEBIR meeting (Association for the Study of Biology of Reproduction), hold at the Kursaal Centre in San Sebastián/Donostia. The meeting has been really thorough, with sections about andrology, embryology, the oocyte, cryopreservation, AI centre management, etc. With more than 400 attendants and dozens of communications, this meeting has been a thorough success, and we have to compliment the organizers.

Of course, we have really enjoyed the city! (considered as one of the best touristic places in the world). The social (and gastronomical) aspects of the meeting were also excellent!

We contributed with two poster communications to this meeting:

Justel, V, Pardal-Gil, S, Fernández-Alegre, E, Mata-Campuzano, M, Martínez-Pastor, F. Determinación de puentes disulfuro en la cromatina espermática y relación con la fragmentación del ADN y madurez de la cromatina por SCSA. 2015. ASEBIR 20:188.

Gutiérrez-Díaz, Isabel, Pardal-Gil, S., Molinero, N, Mata-Campuzano, M, Martínez-Pastor, F.. Uso de la citometría de flujo para la determinación de aneuploidías en espermatozoides: puesta a punto y validación. 2015. ASEBIR 20:184-5.


AI-Vets and ESDAR meetings in Bulgaria

We were invited to deliver a talk at the AI-vets meeting (Albena, Bulgaria) about the importance of sperm chromatin assessment in boar AI centres. We also attended the subsequent European Society for Domestic Animals Reproduction meeting (ESDAR), where we presented two oral communications and six posters. These communications showed not only our research, but also results from collaborations with groups from the UCLM, Oxford University, Chicago Zoological Society, SLU and Linköping University (Sweden). The studies presented as poster or oral communications covered a wide range of topics on animal reproduction, and the plenary presentations dealt with many subjects, from artificial insemination to epigenetics.

Here are the presentations and posters:

Martínez-Pastor, F. Sperm chromatin integrity – Application for boar semen analysis. Proceedings of the AI-Vets meeting.

Tejero, J., Alegre, B., Gómez, C., Martínez-Pastor, F., González, J. R., Alonso, M. E., Domínguez, J. C. 2015. Echographic follow-up of the corpus luteum in dairy cows is useful for early pregnancy diagnostic after artificial insemination. Reprod Domest Anim 50 Suppl. 3:80.

Sánchez-Paniagua, D., Fernández-Gago, R., Mata-Campuzano, M., Alegre, B., Alonso, M., Domínguez, J. C., Martínez Pastor, F. 2015. Chromatin compaction, but not DNA fragmentation, is affected by the breed in refrigerated storage of boar semen. Reprod Domest Anim 50 Suppl. 3:39.

Martínez-Pastor, F., Pardal-Gil, S., Justel, V., González, J. R., Domínguez, J. C., González-Urdiales, R. 2015. Validation of a method for quick concentration assessment of boar semen using flow cytometry. Reprod Domest Anim 50 Suppl. 3:66.

Jiménez-Rabadán, P., Pérez-Guzmán, M. D., Garde, J. J., García-Alvarez, O., Maroto-Morales, A., Soler, A. J., Fernández-Santos, M. R., Martínez-Pastor, F., Ramón, M. 2015. Genetic components for semen traits in dairy ewes. Reprod Domest Anim 50 Suppl. 3:58.

González-González, L., Vega-Carbajal, C., Mata-Campuzano, M., Álvarez-Rodriguez, M., Martínez Pastor, F. 2015. Real-time qPCR for the assessment of DNA damage and telomere length in ram spermatozoa cryopreserved in presence of antioxidants. Reprod Domest Anim 50 Suppl. 3:40.

García-Alvarez, O., Maroto-Morales, A., Iniesta-Cuerda, M., Ramón, M., Jiménez-Rabadán, P., Martínez Pastor, F., Fernández-Santos, M. R., Garde, J., Soler, A. J. 2015.
Effect of high concentration of membrane permeable and nonpermeable cryoprotectans in vitrification media on ram sperm quality.
Reprod Domest Anim 50 Suppl. 3:54.

Crespo-Félez, I., Castañeda, A., Mata-Campuzano, M., Morrell, J. M., Martínez-Pastor, F. 2015. Testing the single-layer centrifugation colloid Androcoll to recover high quality spermatozoa from cryopreserved ram semen. Reprod Domest Anim 50 Suppl. 3:48.

Conde-Gómez, R., Malo, A. F., Alaks, G., Lacy, R. C., Martínez Pastor, F. 2015. Different breeding strategies affect sperm morphometry in Peromyscus leucopus. Reprod Domest Anim 50 Suppl. 3