Person:
Perea Pérez, Bernardo

First Name

Bernardo

Last Name

Perea Pérez

URI

https://hdl.handle.net/20.500.14352/79342

Affiliation

Universidad Complutense de Madrid

Faculty / Institute

Medicina

Department

Medicina Legal, Psiquiatría y Patología

Area

Medicina Legal y Forense

Identifiers

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Now showing 1 - 10 of 13

Project number: 234
Observatorio Complutense para la Seguridad Clínica Odontológica
(2017) Perea Pérez, Bernardo; Santiago Sáez, Andrés Sebastián; Labajo González, Elena; Albarrán Juan, María Elena
Geometric morphometrics of the human cervical vertebrae: sexual and population variations
(Journal of Anthropological Sciences, 2021) Palancar, Carlos A.; García Martínez, Daniel; Cáceres Monllor, David Antonio; Perea Pérez, Bernardo; Ferreira, María Teresa; Bastir, Markus
This study aims to carry out the first geometric morphometric analysis of the 3D size and shape of the full series of cervical vertebrae delving into variability related to sex and population background. For this reason, we analyzed the cervical vertebrae of both males and females belonging to Europeans, Africans, and Greenland Inuit. We 3D-scanned a total of 219 cervical vertebrae of males and females of three different modern human populations (European, African, and Inuit). A minimum of 72 landmarks and curve semilandmarks were positioned in each of the 3D vertebral models. Landmark configurations were analyzed following the standards of 3D Geometric Morphometrics to test for size and shape differences related to sex or population variation. Results show that male cervical vertebrae are consistently larger than in females while no regular shape differences are observed between males and females in any of the populations. Sex differences in cervical lordosis are thus not supported at the skeletal level of the 3D shape. On the other hand, there is no evidence for population-specific differences in size while shape does vary considerably, possibly also in relation to eco-geographic factors of overall trunk shape. Cervical vertebrae in cold-adapted Inuit were consistently shorter than in Europeans and Africans. The cervical spine may show a different pattern than the thoracic and lumbar spine, which might be related to stronger integration with the cranium, head mobility, and soft-tissue dependence. Our findings suggest that morpho-functional interpretations of the cervical spine based on vertebral skeletal morphology requires caution.
Maternal lineages during the Roman Empire, in the ancient city of Gadir (Cádiz, Spain): the search for a phoenician identity
(Genealogy, 2023) Lopes Gomes, Claudia Filipa; González Wagner, Eduardo Carlos; Calero Fresneda, Manuel; Palomo Díez, Sara; López Matayoshi, César Yoshi; Nogueiro, Inês; López Parra, Ana María; Labajo González, Elena; Perea Pérez, Bernardo; Gener Basallote, José María; Pajuelo, Juan Miguel; Arroyo Pardo, Eduardo
Phoenicians were probably the first eastern Mediterranean population to establish long-distance connections with the West, namely the Iberian Peninsula, from the final Bronze to the early Iron Age. For a long time, these colonies all over the Mediterranean Sea directly depended on an important city administration, Gadir, the most important metropolis in the Western Mediterranean. Modern archaeological excavations were discovered in Cadiz (Spain), the ancient city of Gadir, as well as possible Phoenician burial places. The purpose of the present work is the molecular study of 16 individuals, (V–IV millennium B.C, V A.D.) from several burial places found in Cadiz, attempting to disclose their maternal biogeographical ancestry. Furthermore, the determination of a possible biological link between two individuals found buried together was also an objective of this investigation. Of all the 16 analyzed individuals, eight of them produced positive results. Three main lineages were found: HV0, H and L3b. In general, the results support an Eastern origin for this set of individuals, reinforcing the theory of a Phoenician origin. Due to their historical period, in some cases, it was not possible to discard a Roman origin. Finally, the maternal kinship between two individuals found buried together was discarded.
Metodología para la valoración del daño bucodental
(2002) Perea Pérez, Bernardo; Roldán Garrido, Bernabé; Sánchez Sánchez, José Antonio
En la presente tesis doctoral se propone una metodología concisa y reglada para la valoración del daño bucodental y la forma de reflejarla en un informe pericial. También se desarrollan dos baremos. El primero, extenso y detallado, se indica para casos en los que el daño es exclusiva, o casi exclusivamente, dentario, como los derivados de un inadecuado ejercicio de la odontoestomatología. En este baremo, además de las funciones clásicas de los dientes: masticatoria, fonatoria y estética, se proponen dos funciones nuevas: la función prostodoncica y como patrimonio biológico. El otro baremo recogido es un resumen ponderado del primero y se recomienda para daños dentales derivados de accidentes de trafico. En la tesis también se estudian todos los casos odontoestomatológicos llegados a la clínica médico-forense de Madrid desde julio de 1987 a julio de 1993.
Project number: 71
Observatorio Complutense para la Seguridad Clínica Odontológica
(2018) Perea Pérez, Bernardo; Labajo González, Elena; Santiago Sáez, Andrés Sebastián; Albarrán Juan, María Elena
“Inhibiting inhibitors”: Preliminary results of a new “DNA extractionamplification” disinhibition technique in critical human samples
(Forensic Science International: Genetics, 2017) Gomes, Cláudia; Alonso Conde, Alejandro; Marquina Díaz, Domingo; Guardià, Marc; López Matayoshi, César Yoshi; Palomo Díez, Sara; Perea Pérez, Bernardo; Gibaja, Juan F.; Arroyo Pardo, Eduardo
The present study focused on the genetic analysis of a presumptive Bronze Age family burial, with at least six skeletons (Plana Castell, Barcelona, Spain). In order to investigate the individuals’ biological affiliation, a molecular study was undertaken, but it was impossible to obtain a positive DNA amplification. The excavation data indicated that the skeletons were buried in an old location used as a dumping ground, being very likely the presence of biological and/or chemical contaminants. To overcome this difficulty, we undertook several modifications both in the extraction as in the amplification protocol, like MgCl2concentration, or the inclusion of Bovine Serum Albumin (BSA). Despite their antiquity, the preliminary results indicate that all samples were effectively inhibited, and for the first time we were able to obtain mtDNA results, specifically, for the Hypervariable mitochondrial region 1. It also allowed us to infer that our protocol performance increased considerable, mainly the amplification modifications. In general, the best results were obtained with MgCl2 0,6 μL (20 mM) and BSA 2 mg/mL per sample. Our result is quite important in a forensic analysis, mainly in cases where corpse/s is/are buried directly in the soil.
The Identified Skeletal Collection of the School of Legal Medicine: a contemporary osteological collection housed in Universidad Complutense de Madrid, Spain
(International Journal of Legal Medicine, 2023) Villoria Rojas, Catherine; Mata Tutor, Pilar; Labajo González, Elena; Perea Pérez, Bernardo; Santiago Sáez, Andrés Sebastián; García Velasco, María; Mansour, Cindy; Benito Sánchez, María
Osteological collections are an important resource for the development of methods to assist in the study of skeletal remains in archeological and/or forensic contexts. The aim is to describe the current characteristics of the Identified Skeletal Collection of the School of Legal Medicine and its historical context. The Identified Skeletal Collection of the School of Legal Medicine of the Complutense University of Madrid consists of 138 male and 95 female individuals, born between 1880 and 1980 and deceased between 1970 and 2009. The minimum age of the sample is perinatal and the maximum age is 97 years. The collection is an essential tool for forensic research, given that its population characteristics can be extrapolated to those of present-day Spain. Access to this collection offers unique teaching opportunities as well as provides the information necessary to develop various lines of research.
Spanish allele and haplotype database for 32 X-chromosome Insertion-Deletion polymorphisms
(Forensic Science International Genetics, 2020) Lopes Gomes, Claudia Filipa; Baeza Richer, Carlos; Palomo Díez, Sara; López Parra, Ana María; Labajo González, Elena; Perea Pérez, Bernardo; Arroyo Pardo, Eduardo
X-chromosome markers have been proved to be decisive both complementing and solving kinship analysis, particularly when autosomal markers are not able to produce adequate likelihood ratios between different hypothesis. On the other hand, Pereira et al., (2012) have demonstrated that 32 Insertion/Deletion (InDel) markers located on the X-Chromosome have a very important power of discrimination in human populations, being a novel tool in the forensic and population fields. So, the aim of the present work was testing the forensic and population genetic efficiency of the 32 X-InDel polymorphisms in the Spanish population, and subsequently build an allele/haplotype frequencies database. To accomplish this objective, a total of 555 samples comprising male individuals from 13 Spanish regions were analysed for the above mentioned 32 X-InDels in two independent laboratories. A pairwise FST analysis was performed in order to understand if the studied Spanish sub-populations present significant differences among them, detecting possible population substructure. Also, linkage disequilibrium analyses were computed to investigate the presence of association between markers in the Spanish population. After Bonferroni correction, the absence of significant differences among the studied regions supports a global Spanish population database. Concerning LD, besides previously reported linked markers MID356-MID357 and MID3690-MID3719-MID2089, we also detected significant association between MID3703-MID3774, even after Bonferroni correction. Finally, after computing allele and haplotype frequencies, forensic efficiency parameters were calculated (PDmales = 99.999976 %; PDfemales = 99.99999999998 %). Mean exclusion chance values for duos were 0.999 and trios 0.99999. These results reinforce the suitability of the 32 X-InDels marker set both in identification and kinship studies.
Project number: 82
Observatorio Complutense para la Seguridad Clínica Odontológica
(2021) Perea Pérez, Bernardo; Labajo González, Elena; Santiago Sáez, Andrés Sebastián; Albarrán Juan, María Elena
Project number: 178
Observatorio Complutense para la seguridad clínica odontológica
(2019) Perea Pérez, Bernardo; Labajo González, Elena; Santiago Sáez, Andrés Sebastián; Albarrán Juan, María Elena