Maria Joao Prata
Biographic Data
| ID | 4089985 |
|---|---|
| NAME | Maria Joao Prata |
| GIVEN NAMES | Maria Joao |
| FAMILY NAME | Prata |
| SIGNATURE | PRATA M J |
| AFFILIATIONS | Universidade do Porto |
| ORCID | 0000-0002-0583-1028 |
| VERIFIED | Yes |
| TOTAL WORKS | 12 |
| TOTAL CITATIONS | 6 |
| AUTHOR COUNT | 12 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2000 |
| LATEST PUBLICATION YEAR | 2017 |
| H-INDEX | 2 |
The Eastern side of the Westernmost Europeans: Insights from subclades within Y‐chromosome haplogroup J‐M304
While previous inferences based on modern haplogroup J Y-chromosomes implicated a main Neolithic dissemination, here we propose a later arrival of J lineages into Iberia using a combination of novel Portuguese Y-chromosomal data and recent evidence from ancient DNA. Our analysis suggests that a substantial tranche of J1-M267 lineages was likely carried into the Iberian Peninsula as a consequence of the trans-Mediterranean contacts during the firs…
Y chromosome diversity in a linguistic isolate (Mirandese, NE Portugal)
OBJECTIVES: The purpose of this study was to genetically characterize the male lineages of people who speak Mirandese, an interesting case of a linguistic relict that can still be found in the municipality of Miranda do Douro, NE Portugal. This region lies within the area of the Leonese dialects, which are remnants of the Romance dialects spoken in the Kingdom of Leon currently grouped in the Astur-Leonese linguistic continuum. We intended to dis…
The Orientalisation of North Africa: New hints from the study of autosomal STRs in an Arab population
This study represents an additional step to obtain a comprehensive understanding of the complex demographic history of North African populations
Mirandese language and genetic differentiation in Iberia: A study using X chromosome markers
The results showed that Miranda do Douro tended to present slightly lower levels of diversity in comparison to the other studied regions, which can be a discreet sign of isolation of that population over the years that might have led the way to the preservation of a language not spoken anywhere else in the country. The analysis of X-STRs particularly brought to light the presence of a subtle population sub-structure at the micro-geographical area…
Refining the genetic portrait of Portuguese Roma through X‐chromosomal markers
Due to differences in transmission between X‐chromosomal and autosomal DNA, the comparison of data derived from both markers allows deeper insight into the forces that shape the patterns of genetic diversity in populations. In this study, we applied this comparative approach to a sample of Portuguese Roma (Gypsies) by analyzing 43 X‐chromosomal markers and 53 autosomal markers. Portuguese individuals of non‐Gypsy ancestry were also studied. Compa…
Genetic profiling of the Azores Islands (Portugal): Data from 10 X‐chromosome STRs
The populations from the Azores islands have been the target of several genetic studies, using data derived from monoparental and recombining genetic systems. These studies have provided a complex picture of the genetic landscape of the three groups of Azorean islands, and further data are required to assess its genetic profile. We present a study of the polymorphism in 10 X‐chromosome STR loci (DSXS8378, DXS9898, DXS7133, GATA31E08, GATA172D05, …
Genetic characterization of uniparental lineages in populations from Southwest Iberia with past malaria endemicity
Malaria endemicity in Southwest Iberia afforded conditions for an increase of sickle cell disease (SCD), which in the region follows a clinal pattern toward the south, where foci of high prevalence were found. SCD distribution is associated with specific geographical areas, and therefore, its introduction into Iberia may be related to the migration of different populations. We have analyzed the variation of uniparental markers in Portuguese popul…
A genetic historical sketch of European Gypsies: The perspective from autosomal markers
In this study, 123 unrelated Portuguese Gypsies were analyzed for 15 highly polymorphic autosomal short tandem repeats (STRs). Average gene diversity across the 15 markers was 76.7%, which is lower than that observed in the non‐Gypsy Portuguese population. Subsets of STRs were used to perform comparisons with other Gypsy and corresponding host populations. Interestingly, diversity reduction in Gypsy groups compared to their non‐Gypsy surrounding …
The African contribution to the present‐day population of the Azores Islands (Portugal): Analysis of the Y chromosome haplogroup E
Among the settlers that, from 1432 onwards, arrived to the Azores Islands were individuals of North and sub‐Saharan African origin. A previous study of markers of the Y chromosome revealed that haplogroup E is the second more frequent in the Azores (13%). Since this haplogroup is heterogeneous and may contain subtypes of African or non‐African origin, we analyzed an extended sample of 319 Azoreans, originating from the three groups of islands (Ea…
Peopling of the Azore Islands (Portugal): Data from the Y Chromosome
Nine Atlantic islands with approximately five and a half centuries of demographic history constitute the Portuguese archipelago of the Azores. Despite the recent peopling history of these islands, written records regarding the specific origin and relative proportions of the first settlers are scarce and incomplete. To gain insights into the history of the peopling of the Azores and to evaluate to what extent population imports described in histor…
Polimorfismos genéticos de ESD, GLO1, GPT e PGM1 em São Tomé e Príncipe
The distribution of phenotypes of the red cell esterase D (ESD), glyoxalase 1 (GLO1), glutamate pyruvate transaminase (GPT) and phosphoglucomutase 1 (PGM1) were analysed by starch gel electrophoresis in unrelated native-born residents in Sao Tome and Principe, for the purpose of genetic characterization of this population. The allele frequencies found were: ESD* = 0.929, ESD*2 = 0.071 (N =145); GLO 1 *1= 0.347, GLO1 *2 = 0.653 (N = 154); GPT*1=0.…
Y-Chromosomal Diversity in Europe Is Clinal and Influenced Primarily by Geography, Rather than by Language
Peopling of the Azore Islands (Portugal): Data from the Y Chromosome
Nine Atlantic islands with approximately five and a half centuries of demographic history constitute the Portuguese archipelago of the Azores. Despite the recent peopling history of these islands, written records regarding the specific origin and relative proportions of the first settlers are scarce and incomplete. To gain insights into the history of the peopling of the Azores and to evaluate to what extent population imports described in histor…
A genetic historical sketch of European Gypsies: The perspective from autosomal markers
In this study, 123 unrelated Portuguese Gypsies were analyzed for 15 highly polymorphic autosomal short tandem repeats (STRs). Average gene diversity across the 15 markers was 76.7%, which is lower than that observed in the non‐Gypsy Portuguese population. Subsets of STRs were used to perform comparisons with other Gypsy and corresponding host populations. Interestingly, diversity reduction in Gypsy groups compared to their non‐Gypsy surrounding …
Y-Chromosomal Diversity in Europe Is Clinal and Influenced Primarily by Geography, Rather than by Language
Polimorfismos genéticos de ESD, GLO1, GPT e PGM1 em São Tomé e Príncipe
The distribution of phenotypes of the red cell esterase D (ESD), glyoxalase 1 (GLO1), glutamate pyruvate transaminase (GPT) and phosphoglucomutase 1 (PGM1) were analysed by starch gel electrophoresis in unrelated native-born residents in Sao Tome and Principe, for the purpose of genetic characterization of this population. The allele frequencies found were: ESD* = 0.929, ESD*2 = 0.071 (N =145); GLO 1 *1= 0.347, GLO1 *2 = 0.653 (N = 154); GPT*1=0.…
Peopling of the Azore Islands (Portugal): Data from the Y Chromosome
Nine Atlantic islands with approximately five and a half centuries of demographic history constitute the Portuguese archipelago of the Azores. Despite the recent peopling history of these islands, written records regarding the specific origin and relative proportions of the first settlers are scarce and incomplete. To gain insights into the history of the peopling of the Azores and to evaluate to what extent population imports described in histor…
The African contribution to the present‐day population of the Azores Islands (Portugal): Analysis of the Y chromosome haplogroup E
Among the settlers that, from 1432 onwards, arrived to the Azores Islands were individuals of North and sub‐Saharan African origin. A previous study of markers of the Y chromosome revealed that haplogroup E is the second more frequent in the Azores (13%). Since this haplogroup is heterogeneous and may contain subtypes of African or non‐African origin, we analyzed an extended sample of 319 Azoreans, originating from the three groups of islands (Ea…
Genetic profiling of the Azores Islands (Portugal): Data from 10 X‐chromosome STRs
The populations from the Azores islands have been the target of several genetic studies, using data derived from monoparental and recombining genetic systems. These studies have provided a complex picture of the genetic landscape of the three groups of Azorean islands, and further data are required to assess its genetic profile. We present a study of the polymorphism in 10 X‐chromosome STR loci (DSXS8378, DXS9898, DXS7133, GATA31E08, GATA172D05, …
Genetic characterization of uniparental lineages in populations from Southwest Iberia with past malaria endemicity
Malaria endemicity in Southwest Iberia afforded conditions for an increase of sickle cell disease (SCD), which in the region follows a clinal pattern toward the south, where foci of high prevalence were found. SCD distribution is associated with specific geographical areas, and therefore, its introduction into Iberia may be related to the migration of different populations. We have analyzed the variation of uniparental markers in Portuguese popul…
A genetic historical sketch of European Gypsies: The perspective from autosomal markers
In this study, 123 unrelated Portuguese Gypsies were analyzed for 15 highly polymorphic autosomal short tandem repeats (STRs). Average gene diversity across the 15 markers was 76.7%, which is lower than that observed in the non‐Gypsy Portuguese population. Subsets of STRs were used to perform comparisons with other Gypsy and corresponding host populations. Interestingly, diversity reduction in Gypsy groups compared to their non‐Gypsy surrounding …
Refining the genetic portrait of Portuguese Roma through X‐chromosomal markers
Due to differences in transmission between X‐chromosomal and autosomal DNA, the comparison of data derived from both markers allows deeper insight into the forces that shape the patterns of genetic diversity in populations. In this study, we applied this comparative approach to a sample of Portuguese Roma (Gypsies) by analyzing 43 X‐chromosomal markers and 53 autosomal markers. Portuguese individuals of non‐Gypsy ancestry were also studied. Compa…
Mirandese language and genetic differentiation in Iberia: A study using X chromosome markers
The results showed that Miranda do Douro tended to present slightly lower levels of diversity in comparison to the other studied regions, which can be a discreet sign of isolation of that population over the years that might have led the way to the preservation of a language not spoken anywhere else in the country. The analysis of X-STRs particularly brought to light the presence of a subtle population sub-structure at the micro-geographical area…
Y chromosome diversity in a linguistic isolate (Mirandese, NE Portugal)
OBJECTIVES: The purpose of this study was to genetically characterize the male lineages of people who speak Mirandese, an interesting case of a linguistic relict that can still be found in the municipality of Miranda do Douro, NE Portugal. This region lies within the area of the Leonese dialects, which are remnants of the Romance dialects spoken in the Kingdom of Leon currently grouped in the Astur-Leonese linguistic continuum. We intended to dis…
The Orientalisation of North Africa: New hints from the study of autosomal STRs in an Arab population
This study represents an additional step to obtain a comprehensive understanding of the complex demographic history of North African populations
The Eastern side of the Westernmost Europeans: Insights from subclades within Y‐chromosome haplogroup J‐M304
While previous inferences based on modern haplogroup J Y-chromosomes implicated a main Neolithic dissemination, here we propose a later arrival of J lineages into Iberia using a combination of novel Portuguese Y-chromosomal data and recent evidence from ancient DNA. Our analysis suggests that a substantial tranche of J1-M267 lineages was likely carried into the Iberian Peninsula as a consequence of the trans-Mediterranean contacts during the firs…
Biology (11 works) · Forensic and Genetic Research (10 works) · Genetics (9 works) · Evolutionary biology (8 works) · Geography (8 works) · Population (8 works) · Gene (7 works) · Genetic diversity and population structure (7 works) · Haplotype (7 works) · Allele (6 works)