Person: Cuéllar Del Hoyo, María Del Carmen
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First Name
María Del Carmen
Last Name
Cuéllar Del Hoyo
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Farmacia
Department
Microbiología y Parasitología
Area
Parasitología
Identifiers
7 results
Search Results
Now showing 1 - 7 of 7
Item Expansion of T regulatory lymphocytes by murine bone marrow dendritic cells previously stimulated with Anisakis simplex larval antigens(Memórias do Instituto Oswaldo Cruz, 2021) Zamora, Vega; Rodero Martínez, Marta; Ibáñez Escribano, Alexandra; Andreu-Ballester, Juan C; Méndez, Susana; Cuéllar Del Hoyo, María Del CarmenBACKGROUND Anisakis simplex antigens present immunomodulatory properties by the induction of tolerogenic dendritic cells (DCs) in mice. OBJECTIVES To study the capacity of DCs stimulated with A. simplex excretory-secretory (ES) or crude extract (CE) to generate Tregs. To investigate in vitro effects of antigens on the metabolic activity of splenocytes induced by LPS or CpG. METHODS Phenotypic and functional characterization of T cells co-cultured with A. simplex-pulsed DCs was performed by Flow cytometry. Lymphocyte mitochondrial respiratory activity was estimated by the Alamar Blue® Assay. FINDINGS In C57BL/6J, CD4+CD25-Foxp3+ and CD8+CD25-Foxp3+ populations increased by CE-stimulated-DCs. In BALB/c, CE-stimulated-DCs caused the expansion of CD4+CD25+Foxp3+IL-10+ and CD8+CD25+Foxp3+IL-10+. IFN-γ expression raised in BALB/c CD4+CD25+ and CD4+CD25- for CE and ES, respectively. ES-stimulated-DCs increased CD4+CD25+ Foxp3+ and CD8+CD25- Foxp3+ expression in T cells. The association of ES or CE with LPS produced the increase in splenocyte activity in C57BL/6J. The association of CE with CpG decreased the proliferation caused by CpG in C57BL/6J. MAIN CONCLUSIONS A. simplex increase the frequency of Tregs, which in turn produce IL-10 and IFN-γ. The host genetic base is essential in the development of anti-Anisakis immune responses (Th2, Th1, Treg).Item Anti-Anisakis antibodies in colon cancer patients and their relationship with γδ T-cells(Parasitology Research, 2024) Andreu-Ballester, Juan C.; Cuéllar Del Hoyo, María Del Carmen; Colmena-Zaragoza, Javier; Galindo-Regal, Lorena; Hurtado-Marcos, Carolina; González Fernández, Juan; Balciscueta, Zutoia; García-Ballesteros, Carlos; López-Chuliá, Francisca; Jiménez, Ana I.; Llombart-Cussac, Antonio; Shokoofeh ShamsiMany pathogens are related to carcinogenesis. Chronic infammation, as a result of persistent infection, leads to DNA damage, higher expression of oncogenes, decreased apoptosis and immunosuppression, which are some of the reasons for cancer induction. Among parasites, Schistosoma, Opistorchis and Clonorchis are recognised as infectious agents which contribute to cancer. A relationship between Anisakis and cancer was hypothesised because cellular responses to Anisakis products could result in infammation and DNA damage. Previous research has shown a decrease in CD8+ γδ T-cells and an increase in αβ and γδ T-cell apoptosis in colon cancer (CC) samples. Ninety-two CC patients and 60 healthy subjects were recruited. γδ and αβ T-cells were analysed, and their apoptosis was evaluated. Anti-Anisakis antibodies were tested in sera from CC patients and controls. Anti-Anisakis IgG, IgM, IgA and IgE antibodies were signifcantly higher in CC patients. A signifcant increase in anti-Anisakis IgA levels was observed in patients with angiolymphatic invasion. The number of all γδ T-cells, as well as CD3+ CD4+ αβ T-cells, was signifcantly lower in CC patients. The apoptosis of all T-cells was signifcantly increased in patients with CC. We observed a signifcantly higher percentage of anti-Anisakis IgE positive patients having a defcit of CD3+ γδ T-cells. Our results suggest a relationship between Anisakis and CC.Item Rodent Models for the Study of Soil-Transmitted Helminths: A Proteomics Approach(Frontiers in Cellular and Infection Microbiology, 2021) Montaño, Karen J.; Cuéllar Del Hoyo, María Del Carmen; Sotillo, Javier; Cinzia CantacessiSoil-transmitted helminths (STH) affect hundreds of millions worldwide and are some of the most important neglected tropical diseases in terms of morbidity. Due to the difficulty in studying STH human infections, rodent models have become increasingly used, mainly because of their similarities in life cycle. Ascaris suum and Trichuris muris have been proven appropriate and low maintenance models for the study of ascariasis and trichuriasis. In the case of hookworms, despite most of the murine models do not fully reproduce the life cycle of Necator americanus, their proteomic similarity makes them highly suitable for the development of novel vaccine candidates and for the study of hookworm biological features. Furthermore, these models have been helpful in elucidating some basic aspects of our immune system, and are currently being used by numerous researchers to develop novel molecules with immunomodulatory proteins. Herein we review the similarities in the proteomic composition between Nippostrongylus brasiliensis, Heligmosomoides polygyrus bakeri and Trichuris muris and their respective human counterpart with a focus on the vaccine candidates and immunomodulatory proteins being currently studied.Item Modulation by Anisakis simplex antigen of inflammatory response generated in experimental autoimmune encephalomyelitis(International Immunopharmacology, 2021) Rodero Martínez, Marta; Cuéllar Del Hoyo, María Del CarmenThe impact of immunization with Anisakis simplex larval antigen on the occurrence and progression of experimental autoimmune encephalomyelitis (EAE) induced in mice was studied. C57BL/6J mice were immunized with the MOG35-55 peptide and one batch was treated with A. simplex total larval antigen on days 1, 8, 10 and 12 after EAE induction. Significantly higher values were obtained in the EAE clinical parameters of the antigen-treated group. Likewise, there was a significant decrease in the weights of the animals. Anisakis-treatment produced a significant decrease in anti-MOG35-55 specific IgG1 on day 21. On day 14 there was an increase in serum IL-2, IL-6, IL-10, IL-17A, and TGF-β in the treated group. On day 21, a decrease in IL-4, IL-6, TNF-α, TGF-β was observed. All brain determinations were made on day 21. The treatment decreased values of IL-6, IL-10, IL-17A and TNF-α. A. simplex antigen caused a significantly higher incidence of EAE and an advance in the appearance of the disease manifestations. However, treatment with the antigen was able to cause a decrease in proinflammatory cytokines (IL-6, IL-17A, and TNF-α) in nervous tissue that could establish a future preventive scenario for myelin damage.Item Changes of CD3+CD56+ γδ T cell number and apoptosis during hospital admission are related to mortality in septic patients(Clinical Immunology, 2022) Andreu-Ballester, J.C.; Arribas, M.A.; Rico, M.; García-Ballesteros, C.; Galindo-Regal, L.; Sorando-Serra, R.; Albert, L.; Navarro, A.; López-Chuliá, F.; Peydró, F.; Cuéllar Del Hoyo, María Del CarmenImmunoparalysis and apoptosis of T cells are serious problems for the evolution of septic patients. We aimed to relate changes in the number of αβ and γδ T cells during hospital stay to the poor evolution of sepsis. In this prospective study, we recruited a total of 92 septic patients from the Emergency and Intensive Care Departments of two Hospitals, according to the latest criteria for the definition and management of sepsis. According to the severity of the septic process, there was a progressive decrease in T cells, being much more intense in γδ T cells. This decrease recovered in surviving patients, but CD3+CD56+ γδ T cells continued to decreased during hospital stay in non-surviving patients. Apoptosis increased in sepsis. Cell death of CD3+CD56+ γδ T cells progressively increased according to the severity of sepsis, especially in non-surviving patients.Item Gammadelta T cells as a predictor of surgical relapse of Crohn's disease(Clinics and Research in Hepatology and Gastroenterology, 2020) Andreu-Ballester, Juan Carlos; Catalán-Serra, Ignacio; Gil-Borrás, Rafael; Marqués-García, Pilar; García-Ballesteros, Carlos; López Chuliá, Francisco; Cuéllar Del Hoyo, María Del CarmenBackground: We recently demonstrated a decrease in the overall lymphocyte population in the peripheral blood of patients with CD compared to healthy controls and this decrease is more evident in γδ T lymphocytes. The percentages of T cell subsets could reflect the risk of surgical relapse in CD patients. The aim of this study is to study the correlation between αβ and γδ T cell subsets in the peripheral blood of patients with CD and the risk for surgery during follow up. Methods: A prospective study of 102 patients with CD compared with 102 healthy subjects (control group) matched by age and sex was conducted. Lymphocytic populations of CD3+, CD4+, CD8+, CD56+, and αβ and γδ T cell subsets were measured in the peripheral blood of all participants. Results: We found evidence of a relationship between lower γδ T cell levels and risk of surgical relapse in CD. The lowest subsets observed in CD patients with surgical relapse were CD3 + γδ, CD3 + CD8 + γδ and CD3 + CD56 + γδ T cells. We observed a relationship between a decrease in γδ T cells and the most severe forms of the disease. The lowest levels of CD3 + γδ and CD3 + CD8 + γδ T cells were observed in the fistulizing phenotype. Conclusions: The deficit of γδ T cells was related with the severity and the risk for surgicalrelapse in CD patients. Patients with CD3 + γδ deficit were more prone to surgery than patientswithout this deficit. These results suggest that γδ T cells could be used as markers of poorprognosis of CD following the diagnosis of the disease.Item A Low Number of Baselines γδ T Cells Increases the Risk of SARS-CoV-2 Post-Vaccination Infection(Vaccines (Basel), 2024) Andreu-Ballester, Juan Carlos; Galindo-Regal, Lorena; Cuéllar Del Hoyo, María Del Carmen; López-Chuliá, Francisca; García-Ballesteros, Carlos; Fernández-Murga, Leonor; Llombart-Cussac, Antonio; Domínguez-Márquez, María Victoria; Klasse, P. J.; Mostafa, MaiBackground: The COVID-19 pandemic is the biggest global health problem in the last hundred years. The efficacy of the vaccine to protect against severe disease is estimated to be 70–95% according to the studies carried out, although there are aspects of the immune response to the vaccine that remain unclear. Methods: Humoral and cellular immunity after the administration of three doses of the Pfizer–BioNTech and Oxford AstraZeneca vaccines against SARS-CoV-2 over one year and the appearance of post-vaccination COVID-19 were studied. SARS-CoV-2 IgG and IgA antibodies, αβ and γδ T-cell subsets, and their differentiation stages and apoptosis were analyzed. Results: Anti-SARS-CoV-2 IgG and IgA antibodies showed a progressive increase throughout the duration of the study. This increase was the greatest after the third dose. The highest levels were observed in subjects who had anti-SARS-CoV-2 antibodies prior to vaccination. There was an increase in CD4+ αβ, CD8+ γδ and TEM CD8+ γδ T cells, and a decrease in apoptosis in CD4+ CD8+ and CD56+ αβ and γδ T cells. Post-vaccination SARS-CoV-2 infection was greater than 60%. The symptoms of COVID-19 were very mild and were related to a γδ T cell deficit, specifically CD8+ TEMRA and CD56+ γδ TEM, as well as lower pre-vaccine apoptosis levels. Conclusions: The results unveil the important role of γδ T cells in SARS-CoV-2-vaccine-mediated protection from the disease.