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16 result(s) for "Alrayes, Nuha"
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Integrative weighted molecular network construction from transcriptomics and genome wide association data to identify shared genetic biomarkers for COPD and lung cancer
Chronic obstructive pulmonary disease (COPD) is a multifactorial progressive airflow obstruction in the lungs, accounting for high morbidity and mortality across the world. This study aims to identify potential COPD blood-based biomarkers by analyzing the dysregulated gene expression patterns in blood and lung tissues with the help of robust computational approaches. The microarray gene expression datasets from blood (136 COPD and 6 controls) and lung tissues (16 COPD and 19 controls) were analyzed to detect shared differentially expressed genes (DEGs). Then these DEGs were used to construct COPD protein network-clusters and functionally enrich them against gene ontology annotation terms. The hub genes in the COPD network clusters were then queried in GWAS catalog and in several cancer expression databases to explore their pathogenic roles in lung cancers. The comparison of blood and lung tissue datasets revealed 63 shared DEGs. Of these DEGs, 12 COPD hub gene-network clusters ( SREK1 , TMEM67 , IRAK2 , MECOM , ASB4 , C1QTNF2 , CDC42BPA , DPF3 , DET1 , CCDC74B , KHK , and DDX3Y ) connected to dysregulations of protein degradation, inflammatory cytokine production, airway remodeling, and immune cell activity were prioritized with the help of protein interactome and functional enrichment analysis. Interestingly, IRAK2 and MECOM hub genes from these COPD network clusters are known for their involvement in different pulmonary diseases. Additional COPD hub genes like SREK1 , TMEM67 , CDC42BPA , DPF3 , and ASB4 were identified as prognostic markers in lung cancer, which is reported in 1% of COPD patients. This study identified 12 gene network- clusters as potential blood based genetic biomarkers for COPD diagnosis and prognosis.
Integrative weighted molecular network construction from transcriptomics and genome wide association data to identify shared genetic biomarkers for COPD and lung cancer
Chronic obstructive pulmonary disease (COPD) is a multifactorial progressive airflow obstruction in the lungs, accounting for high morbidity and mortality across the world. This study aims to identify potential COPD blood-based biomarkers by analyzing the dysregulated gene expression patterns in blood and lung tissues with the help of robust computational approaches. The microarray gene expression datasets from blood (136 COPD and 6 controls) and lung tissues (16 COPD and 19 controls) were analyzed to detect shared differentially expressed genes (DEGs). Then these DEGs were used to construct COPD protein network-clusters and functionally enrich them against gene ontology annotation terms. The hub genes in the COPD network clusters were then queried in GWAS catalog and in several cancer expression databases to explore their pathogenic roles in lung cancers. The comparison of blood and lung tissue datasets revealed 63 shared DEGs. Of these DEGs, 12 COPD hub gene-network clusters (SREK1, TMEM67, IRAK2, MECOM, ASB4, C1QTNF2, CDC42BPA, DPF3, DET1, CCDC74B, KHK, and DDX3Y) connected to dysregulations of protein degradation, inflammatory cytokine production, airway remodeling, and immune cell activity were prioritized with the help of protein interactome and functional enrichment analysis. Interestingly, IRAK2 and MECOM hub genes from these COPD network clusters are known for their involvement in different pulmonary diseases. Additional COPD hub genes like SREK1, TMEM67, CDC42BPA, DPF3, and ASB4 were identified as prognostic markers in lung cancer, which is reported in 1% of COPD patients. This study identified 12 gene network- clusters as potential blood based genetic biomarkers for COPD diagnosis and prognosis.
Rhinolith Misdiagnosed as Fungal Mucin
Foreign body insertion inside the nose is not uncommon in pediatric age groups. It can pass unnoticed by parents, sometimes underdiagnosed or incompletely removed by a clinician. In another scenario, it may be incidentally discovered by imaging during dental workups commonly. This foreign body acts like a nidus for a rhinolith, as it gets calcified over years and becomes like a stone, causing unilateral nasal symptoms. Herein, we present a case of a young female with a rhinolith mistaken for fungal mud. We aim to emphasize this rare clinical condition that, if left unperceived, may lead to complications including, but not limited to, sinusitis, pressure necrosis to the surrounding structure causing septal perforation, or naso-palatal fistula.
Long-term growth hormone effects in Prader-Willi syndrome
Objectives: To assess the long-term effects and mortality rates associated with GH therapy in patients with Prader-Willi Syndrome (PWS). Prader-Willi Syndrome is a rare genetic disease characterized by growth hormone (GH) deficiency among other endocrine disorders. Methods: A systematic literature search was carried out on 4 databases including PubMed, Scopus, Web of Science, and Cochrane databases. The search was based on two keywords: \"Growth hormone\" AND \"Prader-Willi Syndrome\". Outcome data included height-standard deviation score (SDS), weight SDS, body mass index (BMI)-SDS, insulin like growth factor 1 (IGF1), mortality, low density lipoprotein (LDL)-cholesterol, and blood glucose. Results: A total of 41 studies were included, of which 30 were involved in the meta-analysis. Following treatment with GH, height-SDS showed a significant increase compared to baseline in two timeline subgroups ([less than or equal to]2 years and >2 years), with a mean difference (MD) of 1.05 (95% CI: 0.92-1.18, p <0.00001) and 1.53 (95% CI: 1.23-1.82, p<0.00001), respectively. Patients on GH experienced a more pronounced increase in height-SDS compared to those who have not received GH. This was further associated with a lower BMI-SDS among GH-treated patients compared to their counterparts, with an MD of -1.02 (95% CI: -1.76 to -0.28, p=0.007; [I.sup.2]=84%, p=0.0003). Additionally, IGF1-SDS showed a marked increase after GH. Other metabolic effects include significant increase in LDL and blood glucose levels after GH treatment. The mortality rate in PWS patients undergoing GH treatment is estimated at 1.5% (95% CI: 0.8-2.2%), with causes including respiratory issues, cardiac arrest, infections, accidents, and gastrointestinal complications. Conclusion: GH therapy in PWS significantly improves height and IGF-1 SDS, while relatively decreasing BMI compared to no-GH, indicative of lean mass growth and healthy development. Nonetheless, GH therapy requires careful metabolic monitoring due to its mixed effects on cholesterol and glucose levels. PROSPERO Reg. number: CRD420250649945 Keywords: Growth hormone, Prader-Willi syndrome, mortality, long-term
A missense mutation in TRAPPC6A leads to build-up of the protein, in patients with a neurodevelopmental syndrome and dysmorphic features
Childhood onset clinical syndromes involving intellectual disability and dysmorphic features, such as polydactyly, suggest common developmental pathways link seemingly unrelated phenotypes. We identified a consanguineous family of Saudi origin with varying complex features including intellectual disability, speech delay, facial dysmorphism and polydactyly. Combining, microarray based comparative genomic hybridisation (CGH) to identify regions of homozygosity, with exome sequencing, led to the identification of homozygous mutations in five candidate genes ( RSPH6A , ANKK1 , AMOTL1 , ALKBH8 , TRAPPC6A ), all of which appear to be pathogenic as predicted by Proven, SIFT and PolyPhen2 and segregate perfectly with the disease phenotype. We therefore looked for differences in expression levels of each protein in HEK293 cells, expressing either the wild-type or mutant full-length cDNA construct. Unexpectedly, wild-type TRAPPC6A appeared to be unstable, but addition of the proteasome inhibitor MG132 stabilised its expression. Mutations have previously been reported in several members of the TRAPP complex of proteins, including TRAPPC2, TRAPPC9 and TRAPPC11, resulting in disorders involving skeletal abnormalities, intellectual disability, speech impairment and developmental delay. TRAPPC6A joins a growing list of proteins belonging to the TRAPP complex, implicated in clinical syndromes with neurodevelopmental abnormalities.
Gene Polymorphisms of the antioxidant enzymes NOX , GSTP , and GPX and diabetic nephropathy risk in Saudi patients with type 2 diabetes
Oxidative stress has been hypothesized to play a crucial role in the complications of type 2 diabetes (T2D). Hyperglycaemia-mediated increases in free radicals have a deleterious effect on cellular compartments and nucleic acids, leading to imbalances between free radicals and antioxidant enzymes. This case–control study comprised two groups with 100 participants (50 T2D and 50 DN patients) and aimed to examine the association between single-nucleotide polymorphisms (SNPs) in the genes encoding nicotinamide adenine dinucleotide phosphate oxidase (NOX), glutathione S-transferase P (GSTP1), and glutathione peroxidase 1(GPX1) and diabetic nephropathy (DN) risk in patients with T2D. An SNP genotyping assay was performed using TaqMan assay and real-time PCR to identify the SNPs (NOX rs4673, GSTP rs1695, GPX1 rs1050450). The Sanger method was used to validate our findings. Fisher chi-square analyses revealed no significant differences in these genes when comparing T2D patients with and without DN. Our findings suggest no association between the rs4673, rs1695, and rs1050450 SNPs and DN in Saudi patients with T2D.
Association of a single nucleotide polymorphism in SOD2 with susceptibility for the development of diabetic nephropathy in patients with type 2 diabetes: A Saudi population study
IntroductionOne of the complications of diabetes mellitus (DM) is diabetic nephropathy (DN), which plays a significant role in the progression of end-stage renal disease. Oxidative stress is implicated in DN pathogenesis, and genetic variations in antioxidant enzymes such as superoxide dismutase 2 (SOD2) and catalase (CAT) may contribute to the susceptibility. This study aimed to investigate the potential association between single nucleotide polymorphisms (SNPs) in antioxidant enzymes, specifically SOD2 rs4880 and CAT rs769217, and the risk of T2D and susceptibility to DN within the Saudi population.MethodsThis case–control study included 150 participants, comprising 50 patients with T2D without DN (group 1), 50 patients with T2D with DN (group 2), and 50 healthy participants (group 3). The samples were genotyped using real-time PCR for SOD2 rs4880 and CAT rs769217 SNPs. Sanger sequencing was used for validation. Statistical analyses were performed to explore associations between these SNPs and T2D with or without DN.ResultsNo significant difference was observed in CAT rs769217 expression between the groups. However, a significant difference was observed in SOD2 rs4880 expression between the healthy controls and patients with T2D with DN (p = .028). Furthermore, SOD2 rs4880 was associated with approximately threefold increased risk of DN in patients with T2D compared to that in healthy participants (odds ratio [OR] = 2.99 [1.31–6.83]). Validation through Sanger sequencing further confirmed these findings.ConclusionsThe findings of this study provide evidence that SOD2 rs4880 SNP may contribute to inadequate defence by the antioxidant enzyme, SOD2, against DM-induced oxidative stress and thus cause DN in Saudi patients with T2D. Therefore, SOD2 rs4880 may serve as a predictive marker to prevent the development and progression of DN in patients with T2D.
The Association of Sociodemographic Factors, Postictal Symptoms, and Medical History With Seizure Type in Patients With Epilepsy: A Cross-Sectional Study
Background Approximately 50 million people globally suffer from epilepsy. The prevalence of epilepsy in Saudi Arabia has been reported at 6.5 per 1,000 persons, affecting nearly 1% of the entire population. However, limited data is available in the country regarding the sociodemographic factors affecting epilepsy and its associated postictal symptoms, which may lead to stigmatization and negatively impact patients. Methods A cross-sectional study was conducted at King Abdulaziz University Hospital (KAUH) in a survey format. Ethical approval was obtained from the Research Ethics Committee of the Faculty of Medicine at King Abdulaziz University. The study population included patients with epilepsy who visited King Abdulaziz University Hospital's outpatient neurology clinics from October 2021 to March 2022. Results The study participants' average age at the time of the first seizure was 16.5 years, with patients experiencing seizures as early as within the first year of life and as late as 70 years of age. Patients who had had their first seizure during the first year of life did not have any schooling (p<0.0001) and had learning difficulties (p<0.00001). Focal onset impaired awareness seizures were significantly associated with motor weakness (p=0.023) and mood alterations (p=0.014), while postictal fear, anxiety or panic, and sleep disruption were statistically significant for focal onset aware seizures (p=0.015 and p=0.050). Conclusion This study highlights the sociodemographic differences between patients in Saudi Arabia and in other areas. It may also point to novel findings regarding the postictal symptoms associated with the various seizure types.
Rare variant burden analysis from exomes of three consanguineous families reveals LILRB1 and PRSS3 as potential key proteins in inflammatory bowel disease pathogenesis
Inflammatory bowel disease (IBD) is a chronic autoimmune disorder characterized by severe inflammation and mucosal destruction of the intestine. The specific, complex molecular processes underlying IBD pathogenesis are not well understood. Therefore, this study is aimed at identifying and uncovering the role of key genetic factors in IBD. The whole exome sequences (WESs) of three consanguineous Saudi families having many siblings with IBD were analyzed to discover the causal genetic defect. Then, we used a combination of artificial intelligence approaches, such as functional enrichment analysis using immune pathways and a set of computational functional validation tools for gene expression, immune cell expression analyses, phenotype aggregation, and the system biology of innate immunity, to highlight potential IBD genes that play an important role in its pathobiology. Our findings have shown a causal group of extremely rare variants in the (Q53L, Y99N, W351G, D365A, and Q376H) and (F4L and V25I) genes in IBD-affected siblings. Findings from amino acids in conserved domains, tertiary-level structural deviations, and stability analysis have confirmed that these variants have a negative impact on structural features in the corresponding proteins. Intensive computational structural analysis shows that both genes have very high expression in the gastrointestinal tract and immune organs and are involved in a variety of innate immune system pathways. Since the innate immune system detects microbial infections, any defect in this system could lead to immune functional impairment contributing to IBD. The present study proposes a novel strategy for unraveling the complex genetic architecture of IBD by integrating WES data of familial cases, with computational analysis.
Prevalence of CEA, CA 125, and CA 15-3 serum tumour markers in different regions of Saudi Arabia
Objectives: To study the prevalence of tumor marker (TM) carcinoembryonic antigen (CEA), cancer antigen 125 (CA 125), and cancer antigen 15-3 (CA 15-3) levels in the Saudi population, based on gender, age, and demographic region, and whether the patients were referred by a hospital or self-referred. Methods: Retrospective analysis was carried out on 7,019 samples gathered from the Western, Northern, Central, Southern, and Eastern regions of Saudi Arabia between 2021-2022. The TMs were categorized into normal and abnormal levels, according to the reference ranges. Statistical analysis was carried out to assess the relations between variants (age groups, gender, and demographic regions) using the Chi-square test, and their correlations were assessed using Spearman's test. Results: Among all patients, CEA, CA 125, and CA 15-3 levels were found to be significantly correlated with age (p=0.0001). The CEA and CA 15-3 levels increased in both males and females with age. The CA 125 was shown to have an abnormally increased level in males with age. Conclusion: Increased levels of CEA, CA 125, and CA 15-3 TMs in the study population were significantly correlated with age. The CEA and CA 15-3 levels were within the normal range, while CA 125 levels were above the normal range in the older male population. These results suggest that the utilization of such TMs is age dependent and would have validity if applied with other parameters. Keywords: serum tumour markers, CEA, CA 125, CA 15-3