Publications by authors named "Marina Bartsakoulia"

Systemic lupus erythematosus (SLE) has a spectrum of phenotypes. Its management should target remission or low disease activity, prevention of relapses and organ damage, minimisation of drug-related harms, and optimisation of health-related quality of life. Advances in our understanding of the disease pathophysiology have expanded the treatment armamentarium with targeted biologics that demonstrate superiority over conventional drugs in controlling activity, reducing flares and glucocorticoid exposure, and improving patient-related outcomes.

View Article and Find Full Text PDF

Background: Pharmacogenomics (PGx) holds promise to revolutionize modern healthcare. Although there are several prospective clinical studies in oncology and cardiology, demonstrating a beneficial effect of PGx-guided treatment in reducing adverse drug reactions, there are very few such studies in psychiatry, none of which spans across all main psychiatric indications, namely schizophrenia, major depressive disorder and bipolar disorder. In this study we aim to investigate the clinical effectiveness of PGx-guided treatment (occurrence of adverse drug reactions, hospitalisations and re-admissions, polypharmacy) and perform a cost analysis of the intervention.

View Article and Find Full Text PDF

Fluoropyrimidines (FLs) have been widely used for more than 60 years against a range of solid tumors and still remains the cornerstone for the treatment of colorectal, gastric, and breast cancer. Here, we performed an economic analysis to estimate the cost of DPYD-guided toxicity management and the clinical benefit expressed as quality adjusted life years (QALYs) in a large group of 571 individuals of Italian origin suffering from cancer and treated with a fluoropyrimidines-based chemotherapy. Individuals suffering from cancer with a histologically confirmed diagnosis of cancer, who received a fluoropyrimidines-based treatment, were retrospectively genotyped in the DPYD gene.

View Article and Find Full Text PDF

Clopidogrel is an antiplatelet drug given to patients before and after having a percutaneous coronary intervention (PCI). Genomic variants in the CYP2C19 gene are associated with variable enzyme activities affecting drug metabolism and hence, patients with reduced or increased enzymatic function have increased risk of bleeding. We conducted a cost-effectiveness analysis to compare a pharmacogenomics versus a non-pharmacogenomics-guided clopidogrel treatment for coronary artery syndrome patients undergoing PCI in the Spanish healthcare setting.

View Article and Find Full Text PDF

The nuclear-encoded glycyl-tRNA synthetase gene (GARS) is essential for protein translation in both cytoplasm and mitochondria. In contrast, different genes encode the mitochondrial and cytosolic forms of most other tRNA synthetases. Dominant GARS mutations were described in inherited neuropathies, while recessive mutations cause severe childhood-onset disorders affecting skeletal muscle and heart.

View Article and Find Full Text PDF

Mitochondrial dynamics play an important role in cellular homeostasis and a variety of human diseases are linked to its dysregulated function. Here, we describe a 15-year-old boy with a novel disease caused by altered mitochondrial dynamics. The patient was the second child of consanguineous Jewish parents.

View Article and Find Full Text PDF
Article Synopsis
  • The study focuses on amyotrophic lateral sclerosis (ALS) and investigates the genetic basis of sporadic ALS (sALS) in Greek patients using next-generation sequencing.
  • The findings show a positive link between specific gene variants in the FTO and TBC1D1 genes and sALS, along with indications of a unique disease-associated haplotype in the FTO gene among Greek patients.
  • This research is noteworthy as it suggests a possible genetic association for sALS and proposes that the methods used could help identify variants in other complex genetic disorders.
View Article and Find Full Text PDF

Background: Mitochondrial encephalomyopathies are severe, relentlessly progressive conditions and there are very few effective therapies available to date. We have previously suggested that in two rare forms of reversible mitochondrial disease (reversible infantile respiratory chain deficiency and reversible infantile hepatopathy) supplementation with L-cysteine can improve mitochondrial protein synthesis, since cysteine is required for the 2-thiomodification of mitochondrial tRNAs.

Objectives: We studied whether supplementation with L-cysteine or N-acetyl-cysteine (NAC) results in any improvement of the mitochondrial function in vitro in fibroblasts of patients with different genetic forms of abnormal mitochondrial translation.

View Article and Find Full Text PDF
Article Synopsis
  • Researchers studied an English family with two siblings suffering from Charcot-Marie Tooth disease type 2 (CMT2), identifying mutations in the IGHMBP2 gene through exome sequencing and linkage analysis.
  • The study found that, unlike the more severe spinal muscular atrophy with respiratory distress type 1 (SMARD1) typically associated with IGHMBP2 mutations, individuals with CMT2 experience a slower progression of symptoms without significant respiratory issues.
  • The research suggests that differences in clinical outcomes are related to varying levels of IGHMBP2 protein, with CMT2 patients having higher protein levels compared to those with SMARD1, but lower than healthy controls.
View Article and Find Full Text PDF

Background/aims: Pharmacogenomics aims to rationalize drug use by minimizing drug toxicity and/or by increasing drug efficacy. A large number of genomic markers have been correlated with variable drug responses and severity of adverse drug reactions. Although a number of these drugs bear pharmacogenomic information in their labels--approved by regulatory agencies--and comprehensive drug/gene lists exist online, information related to the respective pharmacogenomic biomarkers is currently missing from such lists.

View Article and Find Full Text PDF

Background: Behr's syndrome is a classical phenotypic description of childhood-onset optic atrophy combined with various neurological symptoms, including ophthalmoparesis, nystagmus, spastic paraparesis, ataxia, peripheral neuropathy and learning difficulties.

Objective: Here we describe 4 patients with the classical Behr's syndrome phenotype from 3 unrelated families who carry homozygous nonsense mutations in the gene encoding a protein involved in mitochondrial translation.

Methods: Whole exome sequencing was performed in genomic DNA and oxygen consumption was measured in patient cell lines.

View Article and Find Full Text PDF

Schizophrenia is a severe disorder that significantly affects the quality of life and total functioning of patients and their caregivers. Clozapine is the first atypical antipsychotic with fewer adverse effects and established efficacy. As a rule of thumb, risperidone is one of the most reliable and effective antipsychotics for newly diagnosed and chronic schizophrenics.

View Article and Find Full Text PDF

FINDbase (http://www.findbase.org) aims to document frequencies of clinically relevant genomic variations, namely causative mutations and pharmacogenomic markers, worldwide.

View Article and Find Full Text PDF
Article Synopsis
  • - This study investigates how genetic variations in the MAP3K5 and PDE7B genes are linked to the severity of β-hemoglobin diseases and how these variations affect responses to hydroxyurea (HU) treatment in patients.
  • - Researchers genotyped patients with β-thalassemia and sickle cell disease, comparing their genetic data with healthy controls to identify associations between specific gene variants and disease characteristics or treatment outcomes.
  • - Findings revealed that certain variations in the MAP3K5 gene correlate with lower fetal hemoglobin levels and more severe disease, and that these variants also play a role in how well patients respond to HU treatment.
View Article and Find Full Text PDF

Hereditary persistence of fetal hemoglobin (HPFH) is a rare hereditary condition resulting in elevated levels of fetal hemoglobin (HbF) in adults. Typical HPFH is associated with promoter mutations or large deletions affecting the human fetal globin (HBG1 and HBG2) genes, while genetic defects in other genes involved in human erythropoiesis, e.g.

View Article and Find Full Text PDF

Aim: In humans, fetal hemoglobin (HbF) production is controlled by many intricate mechanisms that, to date, remain only partly understood.

Patients & Methods: Pharmacogenomic analysis of the effects of hydroxyurea (HU) on HbF production was undertaken in a collection of Hellenic β-thalassemia and sickle cell disease (SCD) compound heterozygotes and a collection of healthy and KLF1-haploinsufficient Maltese adults, to identify genomic signatures that follow high HbF patterns.

Results: KLF10 emerged as a top candidate.

View Article and Find Full Text PDF

The rs2071348 (g.5264146A>C) polymorphism on the HBB pseudogene, namely HBBP1, previously emerged as a variant significantly associated with a milder disease phenotype in Asian β(0)-thalassemia/hemoglobin (Hb) E (β(0)-thal/Hb E [β26(B8)Glu→Lys, GAG>AAG]) patients. In this study, we aimed to explore the possible association of rs2071348 with β-thalassemia (β-thal) disease severity in a group of β-thal major (β-TM) patients (severe phenotype) and β-thal intermedia (β-TI) patients (mild phenotype) of Hellenic origin and compare the results with normal (non thalassemic) individuals of the same origin.

View Article and Find Full Text PDF

A PHP Error was encountered

Severity: Warning

Message: fopen(/var/lib/php/sessions/ci_sessionca793u0dkboo2kod6stk5f7dv7kpu38l): Failed to open stream: No space left on device

Filename: drivers/Session_files_driver.php

Line Number: 177

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_start(): Failed to read session data: user (path: /var/lib/php/sessions)

Filename: Session/Session.php

Line Number: 137

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once