Alexandra Amaral

2.6k total citations · 1 hit paper
21 papers, 2.0k citations indexed

About

Alexandra Amaral is a scholar working on Public Health, Environmental and Occupational Health, Reproductive Medicine and Molecular Biology. According to data from OpenAlex, Alexandra Amaral has authored 21 papers receiving a total of 2.0k indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Public Health, Environmental and Occupational Health, 16 papers in Reproductive Medicine and 7 papers in Molecular Biology. Recurrent topics in Alexandra Amaral's work include Reproductive Biology and Fertility (16 papers), Sperm and Testicular Function (16 papers) and Hormonal and reproductive studies (3 papers). Alexandra Amaral is often cited by papers focused on Reproductive Biology and Fertility (16 papers), Sperm and Testicular Function (16 papers) and Hormonal and reproductive studies (3 papers). Alexandra Amaral collaborates with scholars based in Portugal, Spain and United Kingdom. Alexandra Amaral's co-authors include João Ramalho‐Santos, Rafael Oliva, Judit Castillo, Bárbara Hatzlhoffer Lourenço, M. Marques, Ana Paula Sousa, Josep Marı́a Estanyol, Paula Mota, Sandra Amaral and Sandra Varum and has published in prestigious journals such as PLoS ONE, PLoS Genetics and Human Reproduction.

In The Last Decade

Alexandra Amaral

21 papers receiving 2.0k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Mitochondria functionality and sperm quality

2013 419 citations Alexandra Amaral, Bárbara Hatzlhoffer Lourenço et al. Reproduction profile →

Peers

Alexandra Amaral

PHEOH

GENET

PPCH

Elizabeth G. Bromfield Australia

Riccardo Focarelli Italy

Fabrice Saez France

Adam J. Koppers Australia

Miguel W. Fornés Argentina

G. J. Killian United States

Woo‐Sung Kwon South Korea

Ruth Shalgi Israel

Miriam Sutovsky United States

C. Mendoza Spain

Elizabeth G. Bromfield Australia

Alexandra Amaral

1.0k ×0.8

823 ×0.8

PHEOH

681 ×1.0

238 ×0.8

GENET

111 ×0.7

PPCH

Citations per year, relative to Alexandra Amaral Alexandra Amaral (= 1×) peers Elizabeth G. Bromfield

Countries citing papers authored by Alexandra Amaral

Since Specialization

Citations

This map shows the geographic impact of Alexandra Amaral's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Alexandra Amaral with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Alexandra Amaral more than expected).

Fields of papers citing papers by Alexandra Amaral

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Alexandra Amaral. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Alexandra Amaral. The network helps show where Alexandra Amaral may publish in the future.

Co-authorship network of co-authors of Alexandra Amaral

This figure shows the co-authorship network connecting the top 25 collaborators of Alexandra Amaral. A scholar is included among the top collaborators of Alexandra Amaral based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Alexandra Amaral. Alexandra Amaral is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Caballero-Campo, Pedro, Alexandra Amaral, Chibo Hong, et al.. (2025). Integrative Molecular and Functional Analysis of Human Sperm Subpopulations to Identify New Biomarkers of Fertilization Potential. Archives of Medical Research. 56(5). 103210–103210. 1 indexed citations

Amaral, Alexandra. (2022). Energy metabolism in mammalian sperm motility. PubMed. 14(5). e1569–e1569. 57 indexed citations

Amaral, Alexandra & Bernhard G. Herrmann. (2021). RAC1 controls progressive movement and competitiveness of mammalian spermatozoa. PLoS Genetics. 17(2). e1009308–e1009308. 11 indexed citations

Amaral, Alexandra, Miguel Rodríguez, Xavier Correig, et al.. (2015). Identification of endogenous metabolites in human sperm cells using proton nuclear magnetic resonance (¹H-NMR) spectroscopy and gas chromatography-mass spectrometry (GC-MS). Andrology. 3(3). 496–505. 50 indexed citations

Amaral, Alexandra, Judit Castillo, Josep Marı́a Estanyol, et al.. (2014). High-throughput sperm differential proteomics suggests that epigenetic alterations contribute to failed assisted reproduction. Human Reproduction. 29(6). 1225–1237. 56 indexed citations

Castillo, Judit, Alexandra Amaral, Tanya Vavouri, et al.. (2014). Genomic and proteomic dissection and characterization of the human sperm chromatin. Molecular Human Reproduction. 20(11). 1041–1053. 37 indexed citations

Amaral, Alexandra, Judit Castillo, João Ramalho‐Santos, & Rafael Oliva. (2013). The combined human sperm proteome: cellular pathways and implications for basic and clinical science. Human Reproduction Update. 20(1). 40–62. 213 indexed citations

Amaral, Alexandra, Bárbara Hatzlhoffer Lourenço, M. Marques, & João Ramalho‐Santos. (2013). Mitochondria functionality and sperm quality. Reproduction. 146(5). R163–R174. 419 indexed citations breakdown →

Castillo, Judit, Alexandra Amaral, & Rafael Oliva. (2013). Sperm nuclear proteome and its epigenetic potential. Andrology. 2(3). 326–338. 53 indexed citations

10.

Amaral, Alexandra, Frank Tüttelmann, Karel De Gendt, et al.. (2012). Minutes of the 5th Meeting of the International Network for Young Researchers in Male Fertility. Asian Journal of Andrology. 14(5). 796–796. 2 indexed citations

11.

Tüttelmann, Frank, Karel De Gendt, Alexandra Amaral, et al.. (2012). The future of testis research is turning 6! Six years of International Network for Young Researchers in Male Fertility. International Journal of Andrology. 35(2). 211–213. 3 indexed citations

12.

Amaral, Alexandra, Judit Castillo, Josep Marı́a Estanyol, et al.. (2012). Human Sperm Tail Proteome Suggests New Endogenous Metabolic Pathways. Molecular & Cellular Proteomics. 12(2). 330–342. 186 indexed citations

13.

Amaral, Alexandra, et al.. (2011). Exogenous glucose improves long-standing human sperm motility, viability, and mitochondrial function. Fertility and Sterility. 96(4). 848–850. 32 indexed citations

14.

Sousa, Ana Paula, Alexandra Amaral, Marta Baptista, et al.. (2011). Not All Sperm Are Equal: Functional Mitochondria Characterize a Subpopulation of Human Sperm with Better Fertilization Potential. PLoS ONE. 6(3). e18112–e18112. 111 indexed citations

15.

Ramalho‐Santos, João, Sandra Varum, Sandra Amaral, et al.. (2009). Mitochondrial functionality in reproduction: from gonads and gametes to embryos and embryonic stem cells. Human Reproduction Update. 15(5). 553–572. 371 indexed citations

16.

Amaral, Alexandra & João Ramalho‐Santos. (2009). Assessment of mitochondrial potential: implications for the correct monitoring of human sperm function. International Journal of Andrology. 33(1). e180–6. 55 indexed citations

17.

Amaral, Alexandra, João Ramalho‐Santos, & Justin C. St. John. (2007). The expression of polymerase gamma and mitochondrial transcription factor A and the regulation of mitochondrial DNA content in mature human sperm. Human Reproduction. 22(6). 1585–1596. 107 indexed citations

18.

John, Justin C. St., Emma J. Bowles, & Alexandra Amaral. (2007). Sperm mitochondria and fertilisation.. PubMed. 65. 399–416. 16 indexed citations

19.

John, Justin C. St., Alexandra Amaral, Emma J. Bowles, et al.. (2006). The Analysis of Mitochondria and Mitochondrial DNA in Human Embryonic Stem Cells. Humana Press eBooks. 331. 347–374. 47 indexed citations

20.

Ramalho‐Santos, João, et al.. (2004). Simultaneous analysis of cytoskeletal patterns and chromosome positioning in human fertilization failures. Fertility and Sterility. 82(6). 1654–1659. 7 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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