Publications by authors named "Riancho J"

Inappropriate aldosterone excess plays a key role in the pathophysiology of various cardiovascular, endocrine and renal diseases. Mineralocorticoid receptor (MR) antagonists (MRAs) such as spironolactone block of the harmful effects of aldosterone and are recommended treatment in these various conditions. However, the sexual adverse effects of spironolactone due to its lack of specificity for the MR and the risk of hyperkalemia in patients with decreased renal function, limit its use.

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Introduction: Amyotrophic lateral sclerosis (ALS) is the most common neurodegenerative disease affecting motor neurons. Currently, ALS is conceived as the result of the interaction between genetics, environmental factors, and aging. This study analyzed the spatial and temporal patterns of ALS in Spain, delving into the potential relationships between altitude, land cover, and this disease.

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Introduction: The purpose is to analyze the changes produced in subjects with an overdipper pattern of ambulatory blood pressure monitoring with the aim of understanding the pathophysiology of normal tension glaucoma.

Methods: A cross sectional study was performed in patients exhibiting overdipper and non-overdipper blood pressure patterns, respectively. Different optic parameters were assessed including the analysis of ganglion cell layer (GCL), peripapillary retinal nerve fiber layer (pRNFL) and Bruch's membrane opening-minimum rim width (BMO-MRW), as well as changes produced in choroidal thickness (CT) and lamina cribrosa (LC) position at two different periods of the day (early morning and evening).

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Background: Current literature and a real-world study suggest that diroximel fumarate (DRF) is safer than dimethyl fumarate (DMF) in the treatment of multiple sclerosis (MS). However, no real-world study to date has significantly addressed the efficacy of this treatment.

Objectives: This study aims to elucidate the safety, tolerability, and efficacy of DRF in a real-world setting, utilizing data from a Spanish national registry of patients commencing DRF therapy post-market introduction.

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Article Synopsis
  • The study investigates the genetic factors linked to severe COVID-19, specifically focusing on hospitalized cases in admixed Americans.
  • Researchers conducted the largest genome-wide association study (GWAS) for COVID-19 hospitalization in this population, identifying four significant genetic associations, including two novel loci found in Latin Americans.
  • The findings highlight the importance of including diverse populations in genomic research, aiming to improve understanding of genetic risks associated with COVID-19 across different ethnic groups.
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Ischemic stroke is a major cause of mortality worldwide; however, few studies have been conducted to measure the impact of the distribution of healthcare services on ischemic stroke fatality. This study aimed to explore the relationship between three ischemic stroke outcomes (incidence, mortality, and fatality) and accessibility to hospitals in Spain, considering its economic development. A cross-sectional ecological study was performed using data on hospital admissions and mortality due to ischemic stroke during 2016-2018.

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Article Synopsis
  • - The study focused on understanding how common secondary hypertension (2HTN) is in young adults aged 18 to 40, finding that nearly 30% of patients had 2HTN.
  • - The most common causes of 2HTN were identified as primary aldosteronism, renovascular hypertension, and kidney diseases, with certain factors like being female and having a lower BMI linked to a higher prevalence.
  • - Based on their findings, the researchers recommend that all young adults with hypertension should be screened for secondary causes, as there is a significant risk present regardless of age or blood pressure levels.
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  • ALS is a neurodegenerative disorder that affects both motor neurons and skeletal muscle, with muscle metabolic disruptions appearing before the onset of classic symptoms.
  • Research found that ALS muscle cells show impaired myogenesis and glucose oxidation, linked to the FOXO1 transcription factor, suggesting this factor plays a critical role in the disease's muscle-related issues.
  • Targeting FOXO1 may offer a new therapeutic strategy for ALS by improving muscle function and potentially alleviating some symptoms associated with the disorder.
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Long-term hypophosphatemia, defined by serum phosphorus (P) levels <2.5mg/dL, impairs the development and quality of mineralized tissue of the skeletal, dental, and auditory systems. P homeostasis depends mainly on intestinal absorption and renal excretion.

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Background: Genome-wide association studies of COVID-19 severity have been carried out mostly on European or East Asian populations with small representation of other world regions. Here we explore the worldwide distribution and linkage disequilibrium (LD) patterns of genetic variants previously associated with COVID-19 severity.

Methods: We followed up the results of a large Spanish genome-wide meta-analysis on 26 populations from the 1000 Genomes Project by calculating allele frequencies and LD scores of the nine most significant SNPs.

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Background: Bone tissue homeostasis relies on the coordinated activity of the bone-forming osteoblasts and bone-resorbing osteoclasts. Osteomesopyknosis is considered a distinctive rare sclerosing skeletal disorder of unelucidated pathophysiology and presumably autosomal dominant transmission. However, the causal genes are unknown.

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Phosphate is a key component of mineralized tissues and is also part of many organic compounds. Phosphorus homeostasis depends especially upon intestinal absorption, and renal excretion, which are regulated by various hormones, such as PTH, 1,25-dihydroxyvitamin D, and fibroblast growth factor 23. In this review we provide an update of several genetic disorders that affect phosphate transporters through cell membranes or the phosphate-regulating hormones, and, consequently, result in hypophosphatemia.

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Article Synopsis
  • - This study examines genetic factors linked to atypical femoral fractures (AFF), which occur in patients on long-term anti-resorptive therapy, focusing on specific genes related to bone health.
  • - Analysis of 13 AFF patients revealed only one with a pathogenic gene variant (ALPL), but significantly more genetic variants were found in AFF patients compared to those without AFF, especially in genes associated with bone formation.
  • - The findings suggest that a combination of genetic variants influences the risk of AFF, highlighting specific genes (ACAN, SUCO, AKAP13, ARHGEF3, PITX2, P4HB) as potential risk factors, warranting larger studies for effective patient risk assessment.
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Metabolic bone diseases cover a broad spectrum of disorders that share alterations in bone metabolism that lead to a defective skeleton, which is associated with increasing morbidity, disability, and mortality. There is a close connection between the etiology of metabolic bone diseases and genetic factors, with being one of the genes associated therewith. The single nucleotide polymorphism (SNP) Arg72Pro of is a genetic factor associated with several pathologies, including cancer, stroke, and osteoporosis.

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Histiocytoses encompass a group of exceptionally rare disorders characterized by the abnormal infiltration of tissues by histocytes. Among these, Erdheim-Chester disease (ECD) stands out as a multisystem histiocytosis that typically affects bones and various other tissues. Historically, the treatment of ECD has been challenging.

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The evidence sustaining the regenerative properties of mesenchymal stem cells' (MSCs) secretome has prompted a paradigm change, where MSCs have shifted from being considered direct contributors to tissue regeneration toward being seen as cell factories for producing biotech medicines. We have previously designed a method to prime MSCs towards osteogenic differentiation by silencing the Wnt/β-Catenin inhibitor . This approach produces a significant increase in bone formation in osteoporotic mice.

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We analyzed the association between HLA polymorphisms and susceptibility to SARS-CoV-2 infection and disease severity. Genotyping data from a total of 9373 COVID-19-positive cases from the Spanish Coalition to Unlock Research on Host Genetics on COVID-19 (SCOURGE) consortium and 5943 population controls were included in the study. We found an association of the alleles HLA-B*14:02 and HLA-C*08:02 with a lower risk to COVID-19 infection (p = 0.

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Background And Objectives: Most patients with amyotrophic lateral sclerosis (ALS) lack a monogenic mutation. This study evaluates ALS cumulative genetic risk in an independent Michigan and Spanish replication cohort using polygenic scores.

Methods: Participant samples from University of Michigan were genotyped and assayed for the chromosome 9 open reading frame 72 hexanucleotide expansion.

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Despite the high contagion and mortality rates that have accompanied the coronavirus disease-19 (COVID-19) pandemic, the clinical presentation of the syndrome varies greatly from one individual to another. Potential host factors that accompany greater risk from COVID-19 have been sought and schizophrenia (SCZ) patients seem to present more severe COVID-19 than control counterparts, with certain gene expression similarities between psychiatric and COVID-19 patients reported. We used summary statistics from the last SCZ, bipolar disorder (BD), and depression (DEP) meta-analyses available on the Psychiatric Genomics Consortium webpage to calculate polygenic risk scores (PRSs) for a target sample of 11,977 COVID-19 cases and 5943 subjects with unknown COVID-19 status.

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Article Synopsis
  • Researchers analyzed genetic data from 24,202 critically ill COVID-19 cases, showing that host genetics can help identify effective immunomodulatory therapies.
  • They conducted a meta-analysis that revealed 49 significant genetic associations, including 16 new ones not previously reported.
  • Key findings include potential drug targets related to inflammation, immune response, and viral entry, which could lead to new treatment strategies for severe COVID-19 cases.
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Objectives: Evaluating whether meteorological and geographical variables could be associated with the severity of COVID-19 in Spain.

Methods: An ecological study was performed to analyze the influence of meteorological and geographical factors in hospital admissions and deaths due to COVID-19 in the 52 provinces of Spain (24 coastal and 28 inland regions), during the first three pandemic waves. Medical and mortality data were collected from the Carlos III Health Institute (ISCIII) and meteorological variables were requested to the Spanish State Meteorological Agency (AEMET).

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