Publications by authors named "Ana Isabel Sanchez Fructuoso"

Continuous immunosuppression after organ transplantation is associated with an increased risk of developing keratinocyte neoplastic lesions. Topical photodynamic therapy represents a therapeutic approach for different keratinocyte neoplastic lesions. However, the specific efficacy and safety of this treatment in this immunocompromised population remains largely unknown.

View Article and Find Full Text PDF

The management of diabetes and renal failure is changing thanks to the appearance of new drugs such as glucagon-like peptide 1 receptor agonists (GLP1-RA) and sodium-glucose cotransporter type 2 inhibitors (SGLT2i) that have benefits in terms of survival and cardiorenal protection. Based on the potential mechanisms of GLP1-RA, kidney transplant recipients (KTRs) could benefit from their effects. However, high-quality studies are needed to demonstrate these benefits, in the transplant population, especially those related to cardiovascular benefits and renal protection.

View Article and Find Full Text PDF

Background: Immunocompromised patients have an increased risk of developing severe COVID disease, as well as a tendency to suboptimal responses to vaccines. The objective of this study was to evaluate the specific cellular and humoral adaptive immune responses of a cohort of kidney transplant recipients (KTR) after 3 doses of mRNA-1273 vaccine and to determinate the main factors involved.

Methods: Prospective observational study in 221 KTR (149 non infected), 55 healthy volunteers (HV) and 23 dialysis patients (DP).

View Article and Find Full Text PDF

Background: A genome-wide association study (GWAS) in kidney transplant recipients reported the association of two polymorphisms located in the PTPRO gene and upstream of the CCDC67 (DEUP1) gene with increased risk of acute T cell-mediated rejection (TCMR). We aimed at replicating the assessment of mentioned associations and additionally ascertaining the influence of treatment and clinical features of the patients.

Methods: The polymorphisms, PTPRO-rs7976329 and CCDC67-rs10765602 were genotyped by TaqMan chemistry in 641 consecutive kidney transplant recipients.

View Article and Find Full Text PDF

Background: Hemophagocytic syndrome (HPS) is an infrequent complication of transplantation caused by an inflammatory response with a benign proliferation of macrophages and defective lytic capability of T lymphocytes and NK cells that can lead to multiorgan failure. Transplant patients are particularly exposed as a result of the increased risk of both infections and malignancies derived from immunosuppressive drugs. There is no consensus for therapy or immunosuppression; mortality is high.

View Article and Find Full Text PDF

The genes , and conform the costimulatory (CD28-CD86) or inhibitory (CTLA-4-CD86) signal in T-cell activation. T-cell immune response has a critical role in allograft rejection, and single nucleotide polymorphisms (SNPs) located in these genes have been widely analyzed with controversial results. We analyzed a group of SNPs located in the three genes: : rs3116496; : rs1129055; and : rs231775 and rs3087243 in a cohort of 632 consecutively recruited kidney transplanted subjects.

View Article and Find Full Text PDF

The +874 A/T polymorphism in the interferon gamma () gene has been associated with Cytomegalovirus (CMV) infection risk in lung and kidney transplant recipients. To replicate this association, we performed a retrospective observational study of this polymorphism and immunosuppressive therapies considering the prophylactic treatment in 600 consecutive kidney transplanted recipients. We found no association of the aforementioned polymorphism with CMV infection in univariate and multivariate analyses regardless of the prophylactic treatment.

View Article and Find Full Text PDF

Background: The incidence of cytomegalovirus (CMV) infection in solid organ transplant recipients may be reduced by antiviral prophylaxis, but this strategy may lead to delayed-onset CMV infection. The proinflammatory cytokine interleukin (IL)-18 plays a major role in viral host defense responses. This study examines the impacts of 2 single-nucleotide polymorphisms (SNPs) in the promoter region of the gene, -607C/A (rs1946518) and -137G/C (rs187238), on the incidence of delayed-onset CMV infection in patients undergoing kidney transplant.

View Article and Find Full Text PDF

Posttransplant glomerulonephritis is a complication of kidney transplant that can impair graft function and long-term graft survival. De novo immunoglobulin A disease in kidney allografts appears to be much less common than the recurrent disease, and in most cases it is diagnosed in protocol biopsies with no clinical evidence of disease or in association with other renal transplant pathologies such as chronic rejection. We present a case of de novo immunoglobulin A nephropathy presenting with overt proteinuria, microscopic hematuria, and progressive deterioration of renal function 30 months after renal transplant.

View Article and Find Full Text PDF

The -308G/A SNP of affects TNF- production. As its impact on transplant outcome remains open to debate, we decided to genotype it in a cohort of transplant subjects. A retrospective analysis of 439 first kidney recipients randomly divided into two subgroups (discovery and validation cohorts) was performed to identify the best predictors of acute rejection (AR).

View Article and Find Full Text PDF
Article Synopsis
  • Kaposi's sarcoma (KS) is a common tumor that can occur after organ transplants, and this study investigates its connection to the HHV-8 virus and the mTOR signaling pathway in skin KS cases from renal transplant recipients.
  • The research focused on twelve patients, analyzing tumor tissue for various molecular markers and classifying KS lesions by their development stage (patch, plaque, nodule).
  • Findings revealed that HHV-8 was present in all samples, with increased activation of the mTOR pathway correlating to more advanced KS stages, and patients showed complete lesion disappearance when treated with mTOR inhibitors after an average follow-up of over 14 years.
View Article and Find Full Text PDF

It is well know that anti-HLA antibodies are an important obstacle in kidney transplantation. Our aim was to study the clinical impact of pretransplant donor specific anti-HLA antibodies (HLA-DSA), in highly sensitized (HS) patients. We analyzed retrospectively the day-of-transplant sera by Luminex Single Antigen Assay (LSA) in HS patients, and the results were correlated with episodes of humoral and cellular rejection as well as with graft and patient survival.

View Article and Find Full Text PDF

Non-heart-beating donors (NHBD) have received attention in the last few years as an alternative source to increase the pool of kidney donors. The majority of reports focus on NHBD from controlled donors, i.e.

View Article and Find Full Text PDF