Publications by authors named "Laraqui A"

Human Papillomavirus (HPV) infection is a significant global health concern linked to various cancers, particularly cervical cancer. Timely and accurate detection of HPV is crucial for effective management and prevention strategies. Traditional laboratory-based HPV testing methods often suffer from limitations such as long turnaround times, restricted accessibility, and the need for trained personnel, especially in resource-limited settings.

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Background Bladder urothelial carcinoma (BLCA) is a major cause of morbidity and mortality worldwide, largely due to the high frequency of disease relapse and the lack of efficient endoscopic diagnostic methods. This study aimed to address this clinical gap by evaluating the potential of using adenomatous polyposis coli (APC) gene promoter methylation as a biomarker detectable in urine DNA of individuals with BLCA. Methods Methylation-specific PCR was used to determine the methylation status of the APC promoter gene in 50 bladder carcinoma patients and 50 apparently healthy individuals.

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Article Synopsis
  • This study analyzed genetic changes in non-small cell lung cancer (NSCLC) patients from Morocco and compared them to data from the Cancer Genome Atlas (TCGA).
  • Out of 76 tissue samples analyzed, 70 had genetic alterations, with 234 changes identified across 18 genes that could influence targeted therapy decisions.
  • Significant differences were found in the prevalence of certain mutations between Moroccan patients and TCGA data, reinforcing the importance of next-generation sequencing for effective diagnosis and treatment planning in NSCLC.
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Background: The Coronavirus Disease 2019 (COVID-19) pandemic has led to significant global morbidity and mortality. Understanding the genetic factors that influence disease outcomes can provide critical insights into pathogenesis and potential therapeutic targets.

Objective: This study aimed to investigate the potential correlation between single nucleotide polymorphisms (SNPs) in , , , and genes and the severity as well as susceptibility to COVID-19 among Moroccan patients.

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Prostate cancer (PCa) is the most frequently diagnosed cancer and a leading cause of cancer-related mortality in men. The diagnosis and treatment of PCa carry considerable medical, psychological, and economic implications. Among the risk factors contributing to cancer, viral infections, notably Epstein-Barr virus (EBV), play a significant role.

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Article Synopsis
  • Prostate cancer is a common health issue, and identifying a reliable biomarker is essential for early diagnosis and treatment.
  • Researchers focused on the expression of Human Endogenous Retrovirus K-10 (HERV-K) to determine its role in prostate cancer progression.
  • Their study found a significant increase in HERV-K gag expression in cancerous prostate tissues compared to healthy ones, suggesting that it could be a useful biomarker for detecting prostate cancer.
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Objectives: The present study aimed to evaluate the frequencies of , and mutations and their possible associations with clinicopathological features in 249 Moroccan patients with colorectal cancer (CRC).

Methods: A retrospective investigation of a cohort of formalin-fixed paraffin-embedded tissues of 249 patients with CRC was screened for // mutations using Idylla™ technology and pyrosequencing.

Results: , and mutations were revealed in 46.

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Background: This review article aims to investigate the prevalence and spectrum of rat sarcoma (RAS) and V-Raf Murine Sarcoma Viral Oncogene Homolog B (BRAF) mutations, and their connection with geographical location, clinicopathological features, and other relevant factors in colorectal cancer (CRC) patients in the Middle East.

Methods: A systematic literature review, employing the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) framework, was conducted to investigate the association between the frequency of relevant mutations and the descriptive clinicopathological characteristics of CRC patients. Multiple electronic databases, including PubMed, Science Direct, Web of Science, Scopus, and Google Scholar, were searched to analyze the relevant literature.

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Objectives: This study aimed to explore the potential correlation between specific single nucleotide polymorphisms (TYK2, IFITM3, IFNAR2, and OAS3 variants) and the severity of COVID-19 in Moroccan patients.

Methods: A genetic analysis was conducted on 109 patients with PCR-confirmed SARS-CoV-2 infection in Morocco. Among these patients, 46% were hospitalized in the intensive care unit, while 59% were not hospitalized.

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The comparative analysis of the expression of the reactive oxygen species-generating NADPH oxidase NOX4 from TCGA data shows that the NOX4 transcript is upregulated in papillary thyroid carcinomas (PTC)-BRAF tumors compared to PTC-BRAF tumors. However, a comparative analysis of NOX4 at the protein level in malignant and non-malignant tumors is missing. We explored NOX4 protein expression by immunohistochemistry staining in malignant tumors (28 classical forms of PTC (C-PTC), 17 follicular variants of PTC (F-PTC), and three anaplastic thyroid carcinomas (ATCs)) and in non-malignant tumors (six lymphocytic thyroiditis, four Graves' disease, ten goiters, and 20 hyperplasias).

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Unlabelled: B-Raf proto-oncogene has been found in a variety of neoplasms. BRAF stimulation can promote tumour proliferation through the activation of the MAP/ERK kinase pathway. This study aimed to determine the germline spectra of BRAF and the association with pathological criteria of prostate tumours.

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Background: Prostate cancer (PCa) is one of the most common tumors in men, regardless of ethnicity and demographics. In many risk factors causing PCa, genes and viral infections are strong candidates for the development of prostate tumors. Indeed, tissue infections of PCa have been reported by the presence of several types of viruses including Human Papillomaviruses (HPV).

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Background: Epidermal growth factor receptor (EGFR) mutation status is of a major clinical significance in non-small cell lung cancer (NSCLC) management, as it guides therapeutic decision making to target patients for a better response to therapy. This implicates the introduction of EGFR mutation analysis as the standard of care for Moroccan NSCLC patients, which in itself entails the implementation of targeted methods for routine EGFR mutation analysis in our laboratories. In this study, we aimed to present 2 targeted methods for EGFR mutation identification and to determine the prevalence and spectrum of EGFR mutations in NSCLC Moroccan patients.

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Background: Mutations in RAS (KRAS, NRAS) and BRAF genes are the main biomarker predicting response to anti-EGFR monoclonal antibodies in targeted therapy in colorectal cancer (CRC).

Objective: Our study aims to evaluate the frequencies of KRAS, NRAS and BRAF mutations and their possible associations with clinico-pathological features in CRC patients from Morocco.

Methods: DNA was extracted from 80 FFPE samples using the QIAamp DNA FFPE-kit.

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Background: Our review discuss (i) the findings from analyzed data that have examined KRAS, NRAS and BRAF mutations in patients with colorectal cancer (CRC) in North Africa and to compare its prevalence with that shown in other populations and (ii) the possible role of dietary and lifestyle factors with CRC risk.  METHODS: Using electronic databases, a systematic literature search was performed for the KRAS, NRAS, and BRAF mutations in CRC patients from Morocco, Tunisia, Algeria and Lybia.  RESULTS: Seventeen studies were identified through electronic searches with six studies conducted in Morocco, eight in Tunisia, two in Algeria, and one in Libya.

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Here, we describe the coding-complete sequence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) strain HM36, identified as a strain of concern of B.1.1.

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Article Synopsis
  • * HPV18 was found in 8 patients and MMTV in 2, with 50% of the patients having a Gleason score of 6; a significant link was identified between higher Gleason scores and viral infections.
  • * Despite the association with Gleason scores, no major differences were observed in other tumor characteristics like PSA levels or age at diagnosis between infected and non-infected individuals, indicating a need for further research with larger sample sizes to clarify these findings.
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Background: Elucidation of specific and recurrent/founder pathogenic variants (PVs) in BRCA (BRCA1 and BRCA2) genes can make the genetic testing, for breast cancer (BC) and/or ovarian cancer (OC), affordable for developing nations.

Methods: To establish the knowledge about BRCA PVs and to determine the prevalence of the specific and recurrent/founder variants in BRCA genes in BC and/or OC women in North Africa, a systematic review was conducted in Morocco, Algeria, and Tunisia.

Results: Search of the databases yielded 25 relevant references, including eleven studies in Morocco, five in Algeria, and nine in Tunisia.

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Despite the remarkable decrease in cervical cancer incidence due to the availability of the HPV vaccine and implementation of screening programs for early detection in developed countries, this cancer remains a major health problem globally, especially in developing countries where most of the cases and mortality occur. Therefore, more understanding of molecular mechanisms of cervical cancer development might lead to the discovery of more effective diagnosis and treatment options. Research on long noncoding RNAs (lncRNAs) demonstrates the important roles of these molecules in many physiological processes and diseases, especially cancer.

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Pathogenic variants (PVs) in genes have been mainly associated with an increasing risk of triple negative breast cancer (TNBC). The contribution of PVs in non-BRCA genes to TNBC seems likely since the processing of homologous recombination repair of double-strand DNA breaks involves several genes. Here, we investigate the susceptibility of genetic variation of the and non- genes in 30 early-onset Moroccan women with TNBC.

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Article Synopsis
  • This study focused on patients with luminal metastatic breast cancer experiencing visceral crisis, analyzing their treatment in a university medical oncology department from 2013 to 2016.
  • A total of 35 patients were studied, showing that those in visceral crisis had poorer health and organ function, with 65% receiving chemotherapy but no significant improvement in outcomes.
  • The average time from visceral crisis to death was about 4.7 weeks, highlighting the necessity for better understanding and treatment strategies for patients in this condition.
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Article Synopsis
  • BRCA1 mutations are a significant factor in hereditary and sporadic breast and ovarian cancer, but their impact in MENA populations has been under-researched.
  • A systematic review revealed 31 mutations across 547 patients, with a notable founder mutation identified in North African families.
  • This knowledge is crucial for enhancing screening programs and clinical management of these cancers in the region, highlighting the need for targeted preventive strategies for mutation carriers.
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The vascular endothelial growth factor (VEGF), a potent regulator of angiogenesis, is involved in the development and progression of breast cancer (BC). The functional +936 C/T polymorphism of the VEGF-A gene has been implicated in BC susceptibility; however, published data are conflicting. In the current case-control study, we analyzed the association of the +936 C/T polymorphism with BC risk and tumor markers expression, human epidermal growth factor receptor 2 (HER2/neu) and caner antigen 15.

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The main mediator of breast cancer (BC) angiogenesis is the vascular endothelial growth factor (VEGF). Variation of VEGF-A gene may influence the BC susceptibility. The present case-control study investigated the association of the four commonly studied single nucleotide polymorphisms (SNP) of VEGF-A, namely: -1154A/G (rs1570360), -2578C/A (rs699947), -634G/C (rs2010963) and -460T/C (rs833061) with BC susceptibility and aggressiveness in Moroccan women.

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Introduction: The objective of this study was to determine the prevalence of West Nile Virus infection in the southern provinces of Morocco.

Methodology: A total of 250 sera, collected during 2012 in the province of Dakhla, were analyzed by microneutralisation assay.

Results: WNV-neutralizing antibodies were detected in 13 samples (5.

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