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Investigación

Malaria and Emerging Parasitosis

Líneas de investigación

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A) Effect of vaccination on the prevalence and distribution of Human Papillomavirus (HPV) genotypes. HPV vaccination was introduced in Spain in 2007-2008 for the prevention of cervical cancer and other cancers associated with these viral infections. The use of HPV vaccination is expected to lead to a decrease in vaccine genotypes in the population. However, it may also lead to an increase in other non-vaccine genotypes, similar to the change in vaccine serotypes observed in pneumococcal infections. This requires continuous surveillance of genotype frequency and data to monitor the efficacy of the HPV vaccination program.

B) Study of the distribution and dynamics of HPV infections in risk groups. There are some particularly vulnerable groups, some of them difficult to access (sex workers, transgender groups, etc.), in which HPV infections deserve special attention. The prevalence of HPV infection is especially high in people living with HIV and/or among men who have sex with men. Knowledge of the distribution and dynamics of infections is especially interesting in these groups, as they may help to improve current algorithms for the prevention of anogenital cancer.

C) Study of infection by HPV genotypes and their relationship with progression to neoplastic processes. The oncogenic capacity of some HPV genotypes and their involvement in the production of anogenital cancer is well known. In addition, there are other oncological processes, such as non-melanoma skin cancer, in which HPV could be implicated. Thus, members of the gamma-24 HPV species have recently been associated with skin cancer. It is to be hoped that the appearance of new genotypes and the performance of more extensive studies may lead to the identification of new associations between HPV and neoplastic processes.

D) Study of co-infections by different HPV genotypes. The presence of co-infections of different HPV genotypes is a very frequent finding, both in skin samples and in different mucous membranes. The great genetic diversity of HPV limits the ability of classical molecular methods to perform a comprehensive detection and study of the genotypes present. However, the use of massive sequencing makes it possible to eliminate some of these biases and to obtain more detailed information on the existing HPV populations, as well as to analyze interactions between the different genotypes.

E) Description of new HPV genotypes/variants. Currently at the International HPV Reference Center (Karolinska Institute, Sweden) more than 220 HPV genotypes are described, distributed in 5 different genera. However, improved molecular detection techniques, as well as the use of massive sequencing, are allowing this number to increase rapidly. The study of new genotypes and variants is essential for the validation and quality control of available diagnostic methods. Similarly, their characterization and the study of possible associations of HPV with pathologies other than those already known is a field of great interest for research.

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Protein Saver® cards: the best alternative for DBS storage at room temperature for HCV RNA.

Arca-Lafuente S, Casanueva-Benítez C, Crespo-Bermejo C, Lara-Aguilar V, Martín-Carbonero L, De los Santos I, Madrid R, Briz V*. Protein Saver® cards: the best alternative for DBS storage at room temperature for HCV RNA. 903 Scientific Report 2022, 12: 10124.

PUBMED DOI

Diarrhoea-causing enteric protist species in intensively and extensively raised pigs (Sus scrofa domesticus) in Southern Spain. Part II: Association with Hepatitis E virus susceptibility.

Rivero-Juarez A, Dashti A, Santín M, George, Köster PC, Lopez-Lopez P, Risalde MA, García-Bocanegra I, Gomez-Villamandos JC, Caballero-Gómez J, Frías M, Bailo B, Ortega S, Muadica AS, Calero-Bernal R, González-Barrio D, Rivero A, Briz V*, Carmena D. Diarrhoea-causing enteric protist species in intensively and extensively raised pigs (Sus scrofa domesticus) in Southern Spain. Part II: Association with Hepatitis E virus susceptibility. Transboundary and Emerging Diseases 2021, 69: e1172-e1178.

PUBMED DOI

Hepatitis C virus influences HIV-1 viral splicing in coinfected patients.

Martínez-Román P, López-Huertas MR, Crespo-Bermejo C, Arca-Lafuente S, Cortegano I, Valle-Millares D, Gaspar ML, Martín-Carbonero, Domínguez-Domínguez L, Ryan P, De los Santos I, De la Fuente Moral S, Fernández-Rodríguez A, Coiras M, Briz V, on behalf of COVIHEP. Hepatitis C virus influences HIV-1 viral splicing in coinfected patients. J Clin Med 2020, 9 (7): 2091.

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rotist enteroparasites in wild boar (Sus scrofa ferus) and black Iberian pig (Sus scrofa domesticus) in southern Spain: a protective effect on hepatitis E acquisition?

Rivero-Juárez A, Dashti A, López-López P, Salimo Muadica A, Risalde MA, Köster PC, Machuca I, Bailo B, Hernández de Mingo M, Dacal E, García-Bocanegra I, Saugar JM, Calero-Bernal R, González-Barrio D, Rivero A, Briz V, Carmena D. Protist enteroparasites in wild boar (Sus scrofa ferus) and black Iberian pig (Sus scrofa domesticus) in southern Spain: a protective effect on hepatitis E acquisition? Parasites & Vectors 2020, 13: 281

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Epidemiological trend of hepatitis C-related liver events in Spain (2000-2015): A nationwide population-based study.

7. Rivero-Juárez A, Dashti A, López-López P, Salimo Muadica A, Risalde MA, Köster PC, Machuca I, Bailo B, Hernández de Mingo M, Dacal E, García-Bocanegra I, Saugar JM, Calero-Bernal R, González-Barrio D, Rivero A, Briz V, Carmena D. Protist enteroparasites in wild boar (Sus scrofa ferus) and black Iberian pig (Sus scrofa domesticus) in southern Spain: a protective effect on hepatitis E acquisition? Parasites & Vectors 2020, 13: 281

PUBMED DOI

Nanotechnology: A reality for diagnosis of HCV infectious disease.

Arca-Lafuente S, Martínez-Román P, Mate-Cano I, Madrid R, Briz V. Nanotechnology: A reality for diagnosis of HCV infectious disease. Journal of Infection 2020, 80 (1); 8-15.

PUBMED DOI

Multidisciplinary Group of viral coinfection HIV/Hepatitis (COVIHEP). HCV-coinfection is related to an increased HIV-1 reservoir size in cART-treated HIV patients: a cross-sectional study.

López-Huertas MR, Palladino C, Garrido-Arquero M, Esteban-Cartelle B, Sánchez-Carrillo M, Martínez-Román P, Martín-Carbonero L, Ryan P, Domínguez-Domínguez L, Santos ID, Moral SDLF, Benito JM, Rallón N, Alcamí J, Resino S, Fernández-Rodríguez A, Coiras M, Briz V*, on behalf of the Multidisciplinary Group of viral coinfection HIV/Hepatitis (COVIHEP). HCV-coinfection is related to an increased HIV-1 reservoir size in cART-treated HIV patients: a cross-sectional study. Sci Rep 2019: 9 (1); 5606.

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Persistent Low-Level Viremia in treatment HIV infection: An unresolved status.

3. Crespo-Bermejo C, Ramírez de Arellano E, Lara-Aguilar V, Martínez-Román P, Arca Lafuente S, Gómez-Lus ML, Martín-Carbonero L, Briz V. Persistent Low-Level Viremia in treatment HIV infection: An unresolved status. Virulencia 2021, 12: 2919-2931.

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List of staff

Información adicional

Despite progress, parasitic diseases remain a major challenge for humans. Its rapid and accurate detection, as well as the identification of specific genes related to virulence and/or resistance to treatments, is a necessity for management and planning control strategies. 

The main objective of the group is to carry out quality, competitive and innovative research, to acquire, disseminate and apply in clinical parasitology with the ultimate goal of improving and innovating in the diagnoses, therapies and control of parasitic diseases. This general objective is implemented through external projects and collaborations with different funding sources:

- Characterization of submicroscopic malaria. National Hospital Network. (FIS-ISCIII).
- Design, optimization and validation of advanced diagnostic methods for the detection of blood parasites (Retos-MICINN).
- Control of onchocerciasis in Equatorial Guinea. CNMTrop-ISCIII (Task Force, USA).
- Characterization and control of Mansonellosis and Onchocerciasis in the Amazon region in Brazil. FIOCRUZ from Amazonas, Brazil. (Cpnqt-Brazil).
- Plasmodium knowlesi and its implication as the fifth species of human malaria. MRC, Malaysia.
- Intestinal parasitosis in Egypt from Cryptosporidium (protozoan) to Capillaria (Nematode). Cairo University and Al-Azhar University, Egypt. (MHESR, AECID).

Content with Investigacion Virus del papiloma humano .