Publications by authors named "Yenisey Triana Marrero"

2 Publications

  • Page 1 of 1

Effect of Biomodulina-T® and VA-MENGOC-BC® on lymphocyte subpopulations in older adults.

Exp Gerontol 2021 10 26;153:111497. Epub 2021 Jul 26.

Institute of Hematology and Immunology, Immunochemistry-Immunology Department, 19th St, between 8th and 10th St, Vedado, 10400 Plaza de la Revolución, Havana, Cuba. Electronic address:

Introduction: The elderly population suffers from the natural process called immunosenescence, which may be related to the high mortality rates it has against the SARS-CoV2 virus, which is why therapies that improve the immune status are required. The combined treatment of the VA-MENGOC-BC® (V-BC) vaccine and the Biomodulina T® (BT) drug could achieve this purpose. This treatment could immunomodulate both the innate and adaptive branches of the immune system simultaneously.

Objective: To determine the effect of BT and V-BC on the immunomodulation of lymphocyte subpopulations in older adults.

Methods: Our study was carried out in 30 apparently healthy Cuban adults over 65 years of age. The study included three groups of 10 subjects per treatment: a combination of both and the monotherapies. Before and 7 days after treatment, 2 mL of peripheral blood was drawn from each subject. Multiparametric flow cytometry was used to identify lymphocyte subpopulations. For the comparison between the groups, point estimates and the confidence intervals of the Odds Ratio were made.

Results: We found that subpopulations of B lymphocytes and natural cytotoxic T (NKT) cells increased only with the administration of BT. Additionally, combination treatments and V-BC did not generate statistically significant immunomodulatory changes in any of the studied lymphocyte subpopulations.

Conclusions: BT presented an immunoenhancing effect on the B and NKT lymphocyte subpopulations of older adults. The three-dose treatment scheme a novel and specific treatment strategy for this formulation. We also were verified that the combined application of V-BC and BT did not have the expected benefits. All these findings suggest that BT administration is a promising approach for immune restoration and to offering protection in elderly patients against COVID-19.
View Article and Find Full Text PDF

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.exger.2021.111497DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8310781PMC
October 2021

Immunophenotypic characterization of double positive T lymphocytes in Cuban older adults.

Exp Gerontol 2021 09 10;152:111450. Epub 2021 Jun 10.

Subdirection for Medical Assistance, Longevity, Anging and Health Research Center (CITED), Vedado, Havana, Cuba. Electronic address:

Introduction: Immunosenescence is the functional deterioration of the immune system during natural aging that mainly affects T lymphocytes, within which is the subpopulation of peripheral double positive T lymphocytes that are immunomodulators of the immune response. They are increased in older adults and play a fundamental role in the immunopathogenesis of autoimmune diseases, viral infections and neoplasms.

Objective: To characterize the immunophenotype of peripheral double positive T lymphocytes in Cuban older adults.

Methods: A cross-sectional study was carried out in 30 older adults residing in Cuba. Peripheral blood double positive T lymphocytes were quantified by flow cytometry. The reading was done on a Beckman Coulter Gallios flow cytometer. A Beckman Coulter Gallios flow cytometer was used for data analysis. Percentage values, median and standard deviation were used.

Results: There was a predominance of women who represented 70%. No older adults with low values of double positive T lymphocytes were reported. Women with high percentage and absolute values of DPT lymphocytes predominated in relation to men. Among the high percentage values and the absolute value of DPT lymphocytes, the group ≥80 years prevailed.

Conclusions: Most of the older adults who exhibited high percentage and absolute values of DPT lymphocytes had some associated comorbidity, an idea that suggests that CD4 + CD8+ T cells seem to play an important role in peripheral sites as powerful immunosuppressants or as cells with high cytotoxic potential.
View Article and Find Full Text PDF

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.exger.2021.111450DOI Listing
September 2021
-->