Publications by authors named "Sahand Tehrani Fateh"

Background: Parkinson's disease (PD), a progressive neurodegenerative disorder, affects millions globally, with cognitive impairment as a significant non-motor complication. These cognitive changes, ranging from mild cognitive impairment to severe dementia, drastically reduce quality of life and worsen prognosis. Early and accurate detection is critical for effective management and therapeutic interventions.

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Bardet-Biedl syndrome (BBS, OMIM 209900) is a rare autosomal recessive disorder characterized by a broad spectrum of clinical features including renal anomalies, learning disabilities, postaxial polydactyly, retinal dystrophy, obesity, and hypogonadism. BBS is a heterogeneous syndrome, both genetically and clinically. To date, genetic variants in more than 28 genes have been associated with this syndrome and its subtypes.

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Objectives: This study, for the first time, sought to investigate whether the interaction between the GRS consists of three SNPs (CAV-1, CRY-1, MC4R) and fat intake is associated with inflammatory markers among Iranian overweight and obese women.

Methods: This cross-sectional study was conducted with 246 overweight and obese women, aged 18-48 years. Three SNPs, including CAV-1 rs3807992, CRY-1 rs2287161, and MC4R rs17782313, were genotyped using PCR-RFLP to calculate the genetic risk score (GRS) for each participant.

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Background: X-linked intellectual disability (XLID) is a genetically heterogeneous disorder that results in cognitive impairment and developmental delays. Mutations in the KDM5C gene have been identified as a causative factor in XLID. This study aimed to identify novel variants associated with XLID and to investigate the clinical and genetic characteristics of XLID patients with mutations in the KDM5C gene.

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The Houge type of X-linked syndromic intellectual developmental disorder (MRXSHG) encompasses a spectrum of neurodevelopmental disorders characterized by intellectual disability (ID), language/speech delay, attention issues, and epilepsy. These conditions arise from hemizygous or heterozygous deletions, along with point mutations, affecting CNKSR2, a gene located at Xp22.12.

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Background: Hereditary sensory and autonomic neuropathy type 9 (HSAN9) is a rare genetic disorder caused by genetic alterations in the TECPR2 locus and is characterized by developmental and intellectual disability, respiratory dysfunction, gastroesophageal reflux disease (GERD), and sensory and autonomic dysfunction, which are shared among the HSAN family.

Methods: Whole-exome sequencing (WES) was performed on samples from both probands, and the relevant genetic variants were confirmed in their families using Sanger sequencing. Additionally, a comprehensive literature review was conducted on previously reported cases of HSAN9, and the clinical and genetic data were assessed to provide insight into the genetic and clinical characteristics of the disease.

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Article Synopsis
  • The study analyzes how different familial structures influence the heritability and prediction accuracy of Type 2 Diabetes (T2D) using data from 11,818 individuals, including genetic information and family pedigrees.
  • It identifies three familial structure scenarios to determine their impact on estimating heritability, highlighting that including families with various disease statuses leads to more accurate results.
  • The research reveals that while familial structures enhance heritability estimations, omitting certain families can improve disease risk prediction and strengthen correlations with Polygenic Risk Scores.
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  • - Maturity-onset diabetes of the young (MODY) is a rare genetic diabetes type, and identifying genetic variants is crucial for accurate diagnosis and treatment, especially since most data is from European populations, leaving a gap for Iranians.
  • - A study analyzed genetic data from 20,002 participants in Iran, focusing on known MODY genes and evaluating their risk factors, finding 6 pathogenic variants linked to MODY in 45 participants from 24 families.
  • - This research is significant as it's the first family-based study to explore the genetic landscape of MODY in Iran, highlighting the need for further investigation into the identified variants.
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The gene plays a crucial role in RNA metabolism and brain development, and mutations in this gene have been associated with neurodevelopmental disorders. The variability in the clinical presentation of -related disorders is highlighted, emphasizing the importance of considering this condition in the differential diagnosis of neurodevelopmental disorders. This study aimed to identify a causative variant in an Iranian patient affected by developmental delay, speech delay, seizure, and clubfoot through whole exome sequencing (WES) followed by Sanger sequencing.

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  • Schwartz-Jampel syndrome (SJS) is a rare genetic disorder causing muscle stiffness and bone development issues due to mutations in the perlecan gene.
  • A study focused on two sisters from consanguineous Iranian parents revealed both typical SJS symptoms, such as myotonia and a mask-like face, as well as an unusual symptom of gastrointestinal bleeding.
  • The research not only provided insights into genetic variants associated with SJS but also explored the connection between perlecan dysfunction and gastrointestinal bleeding, contributing to a broader understanding of the syndrome's clinical manifestations.
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  • Developmental and epileptic encephalopathy type 25 (DEE25) is a rare genetic disorder caused by mutations in the SLC13A5 gene, leading to issues like energy production disruption and developmental delays in the brain.
  • Symptoms typically include refractory seizures in early life, global developmental delays, microcephaly, and dental issues linked to amelogenesis imperfecta.
  • Recent findings in two affected siblings revealed significant brain changes on MRI, such as hypomyelination and white matter loss, highlighting the disorder's clinical variability even among siblings with the same genetic mutations.
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Glycogen storage diseases (GSDs) are a group of rare inherited metabolic disorders characterized by clinical, locus, and allele heterogeneity. This study aims to investigate the phenotype and genotype spectrum of GSDs in a cohort of 14 families from Iran using whole-exome sequencing (WES) and variant analysis. WES was performed on 14 patients clinically suspected of GSDs.

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Background And Aims: The putative association between serum 25-hydroxyvitamin D concentration [25(OH)D] and the risk of cardioembolic stroke (CES) has been examined in observational studies, which indicate controversial findings. We performed Mendelian randomization (MR) analysis to determine the causal relationship of serum 25(OH)D with the risk of CES.

Methods And Results: The summary statistics dataset on the genetic variants related to 25(OH)D was used from the published GWAS of European descent participants in the UK Biobank, including 417,580 subjects, yielding 143 independent loci in 112 1-Mb regions.

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Background And Aims: The occurrence of thiamine metabolism dysfunction syndrome (THMD), a rare autosomal recessive condition, may be linked to various mutations found in the and genes. The disease chiefly manifests through ataxia, muscle hypotonia, abrupt or subacute onset encephalopathy, and a decline in developmental milestones achieved during the early stages of infancy. We present findings from an investigation that involved two individuals from Iran, both of whom experienced seizures along with ataxia and hypotonia.

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Background: The ultra-rare autosomal recessive genetic disorder, You-Hoover-Fong Syndrome (YHFS), is caused by defects in the TELO2 gene and is characterized by intellectual disability, developmental delay, and ocular impairments. This study aims to contribute to a better understanding of YHFS by reviewing previous cases and introducing a novel variant in a new case.

Methods: Whole exome sequencing (WES) was conducted on the proband to identify genetic variants, and Sanger sequencing was used to confirm variants within the family.

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Background: Pontocerebellar hypoplasia is an umbrella term describing a heterogeneous group of prenatal neurodegenerative disorders mostly affecting the pons and cerebellum, with 17 types associated with 25 genes. However, some types of PCH lack sufficient information, which highlights the importance of investigating and introducing more cases to further elucidate the clinical, radiological, and biochemical features of these disorders. The aim of this study is to provide an in-depth review of PCH and to identify disease genes and their inheritance patterns in 12 distinct Iranian families with clinically confirmed PCH.

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Background: Cornelia de Lange Syndrome (CdLS) is a rare genetic disorder characterized by a range of physical, cognitive, and behavioral abnormalities. This study aimed to perform a comprehensive review of the literature on CdLS and investigate two cases of CdLS with distinct phenotypes that underwent WES to aid in their diagnosis.

Methods: We conducted a comprehensive review of the literature on CdLS along with performing whole-exome sequencing on two CdLS patients with distinct phenotypes, followed by Sanger sequencing validation and in-silico analysis.

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Article Synopsis
  • The review article analyzes the role of receptor tyrosine kinase regulatory non-coding RNAs (RTK-RNAs) in solid tumors, emphasizing their influence on cancer development and progression.
  • It discusses the mechanisms by which RTK-RNAs regulate RTK signaling pathways and highlights recent discoveries, including new potential RTK-RNAs and related therapeutic strategies.
  • The article also addresses the challenges of targeting RTK-RNAs in therapy, the need for further research across various models, and their potential as biomarkers for cancer diagnosis and treatment.
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Background: Although a large number of trials have observed an anti-inflammatory property of acarbose, the currently available research remains controversial regarding its beneficial health effects. Hence, the purpose of this study was to examine the effect of acarbose on inflammatory cytokines and adipokines in adults.

Methods: PubMed, Web of Science, and Scopus were systematically searched until April 2023 using relevant keywords.

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Purpose: Dyslipidemia, characterized by elevated levels of triglycerides (TG), low-density lipoprotein (LDL), total cholesterol (TC), and reduced levels of high-density lipoprotein (HDL), is a major risk factor for cardiovascular diseases (CVD). Several studies have shown the potential of acarbose in improving serum lipid markers. However, there have been conflicting results on the topic in adults.

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Congenital myasthenic syndromes-5 (CMS5) is a rare autosomal recessive heterogeneous disorder, caused by pathogenic variants in the that lead to skeletal muscle weakness and abnormal fatigability. The onset is usually from birth to childhood. Disease-causing variants in the collagen-like tail subunit are the most explained etiology in synaptic CMS, causing defected acetylcholinesterase.

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L-carnitine supplementation may be beneficial in improving inflammatory conditions and reducing the level of inflammatory cytokines. Therefore, according to the finding of randomized controlled trials (RCTs), the systematic review and meta-analysis aimed to investigate the effect of L-carnitine supplementation on inflammation in adults. To obtain acceptable articles up to October 2022, a thorough search was conducted in databases including PubMed, ISI Web of Science, the Cochrane Library, and Scopus.

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Hesperidin is a naturally occurring bioactive compound that may have an impact on cardiovascular disease risks, but the evidence is not conclusive. To investigate further, this study aimed to explore the effects of hesperidin supplementation on cardiovascular risk factors in adults. A comprehensive search was conducted up to August 2022 using relevant keywords in databases such as Scopus, PubMed, Embase, Cochrane Library, and ISI Web of Science for all randomized controlled trials (RCTs).

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Infantile hypotonia with psychomotor retardation and characteristic facies 1 (IHPRF1) is caused by biallelic mutations in the NALCN gene, the major ion channel responsible for the background Na + conduction in neurons. Through whole-exome sequencing (WES), we report three novel homozygous variants in three families, including c.1434 + 1G > A, c.

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Neurodevelopmental disorder with spastic diplegia and visual defects (NEDSDV) is a rare autosomal dominant genetic disorder caused by genetic alterations in the CTNNB1 gene. CTNNB1 is a gene that encodes β-catenin, an effector protein in the canonical Wnt pathway involved in stem cell differentiation and proliferation, synaptogenesis, and a wide range of essential cellular mechanisms. Mutations in this gene are also found in specific malignancies as well as exudative vitreoretinopathy.

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