Khaoula Errafii

Dr. Khaoula Errafii

orcid

Research Focus & Metrics

Academic Career Length

4Years (2023-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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Journal Article
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KEKhaoula Errafii
Khaoula Errafii
SBSaïd Boujraf
Saïd Boujraf
MCMohamed Chikri
Mohamed Chikri
Understanding the role of white adipose tissue (WAT) in the occurrence and progression of metabolic syndrome is of considerable interest; among the metabolic syndromes are obesity and type 2 diabetes (T2D). Insulin resistance is a key factor in the development of T2D. When the target cells become resistant to insulin, the pancreas responds by producing more insulin to try to lower blood glucose. Over time, this can lead to a state of hyperinsulinemia (high levels of insulin in the blood), which can further exacerbate insulin resistance and contribute to the development of T2D. In order to understand the difference between healthy and unhealthy obese individuals, we have used published transcriptomic profiling to compare differences between the WAT obtained from obese diabetics and subjects who are obese with normal glucose tolerance and insulin resistance. The identification of aberrantly expressed messenger RNA (mRNA) and the resulting molecular interactions and signaling networks is essential for a better understanding of the progression from normal glucose-tolerant obese individuals to obese diabetics. Computational analyses using Ingenuity Pathway Analysis (IPA) identified multiple activated signaling networks in obesity progression from insulin-resistant and normal glucose-tolerant (IR-NGT) individuals to those with T2D. The pathways affected are: Tumor Necrosis Factor (TNF), Extracellular signal-Regulated protein Kinase 1/2 ERK1/2, Interleukin 1 A (IL1A), Protein kinase C (Pkcs), Convertase C5, Vascular endothelial growth factor (Vegf), REL-associated protein (RELA), Interleukin1/1 B (IL1/1B), Triggering receptor expressed on myeloid cells (TREM1) and Nuclear factor KB1 (NFKB1) networks, while functional annotation highlighted Liver X Receptor (LXR) activation, phagosome formation, tumor microenvironment pathway, LPS/IL-1 mediated inhibition of RXR function, TREM1 signaling and IL-6 signaling. Together, by conducting a thorough bioinformatics study of protein-coding RNAs, prospective targets could be exploited to clarify the molecular pathways underlying the development of obesity-related type 2 diabetes.

Verified
Journal Article
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SASoukaina AZIL
Soukaina AZIL
KEKhaoula Errafii
Khaoula Errafii
MBMoncef BenKhalifa
Moncef BenKhalifa
NLNoureddine Louanjli
Noureddine Louanjli
BGBouchra GHAZI
Bouchra GHAZI
SHSalsabil Hamdi
Salsabil Hamdi
Reproductive infertility is characterized by the inability to achieve pregnancy after a year or more of unprotected sexual intercourse. This review highlights the significant impact of exposure to both types of heavy metals (essential and non-essential) on the reproductive performance of various species, particularly humans. Heavy metals present a high atomic density and weight, including lead, mercury, cadmium, nickel, chromium, and arsenic, and are delivered into the environment through natural and human activities, posing a threat to ecological systems and human reproductive health. These heavy metals have the potential for bioaccumulation and can adversely affect male fertility and sperm quality due to their role in disrupting endocrine functions, altering hormone levels responsible for sperm production, and inducing oxidative stress. The elevated production of reactive oxygen species (ROS) exceeds the capability of antioxidants and can lead to the alteration of sperm quality. Seminal fluid contains antioxidants like vitamin C, vitamin E, zinc, and selenium to counteract the impacts of ROS and also to preserve the sperm function. This review aims also to explore the impact of heavy metals on sperm quality and their relationship with antioxidant imbalance and ROS. The exposure to heavy metals whether through occupational or environmental means increases the production of ROS and therefore leads to an imbalance of antioxidants production. All these factors have no doubt an impact on male reproductive health.

27 March 2024 in Microorganisms
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ZHZakariae El Housni
Zakariae El Housni
Said EzrariSaid Ezrari
Said Ezrari
NABIL RADOUANENABIL RADOUANE
NABIL RADOUANE
ATAbdessalem Tahiri
Abdessalem Tahiri
AOAbderrahman Ouijja
Abderrahman Ouijja
Mohamed HijriMohamed Hijri
Mohamed Hijri
Cercospora beticola Sacc. is an ascomycete pathogen that causes Cercospora leaf spot in sugar beets (Beta vulgaris L.) and other related crops. It can lead to significant yield losses if not effectively managed. This study aimed to assess rhizosphere bacteria from sugar beet soil as a biological control agent against C. beticola and evaluate their effect on B. vulgaris. Following a dual-culture screening, 18 bacteria exhibiting over 50% inhibition were selected, with 6 of them demonstrating more than 80% control. The bacteria were identified by sequencing the 16S rRNA gene, revealing 12 potential species belonging to 6 genera, including Bacillus, which was represented by 4 species. Additionally, the biochemical and molecular properties of the bacteria were characterized in depth, as well as plant growth promotion. PCR analysis of the genes responsible for producing antifungal metabolites revealed that 83%, 78%, 89%, and 56% of the selected bacteria possessed bacillomycin-, iturin-, fengycin-, and surfactin-encoding genes, respectively. Infrared spectroscopy analysis confirmed the presence of a lipopeptide structure in the bacterial supernatant filtrate. Subsequently, the bacteria were assessed for their effect on sugar beet plants in controlled conditions. The bacteria exhibited notable capabilities, promoting growth in both roots and shoots, resulting in significant increases in root length and weight and shoot length. A field experiment with four bacterial candidates demonstrated good performance against C. beticola compared to the difenoconazole fungicide. These bacteria played a significant role in disease control, achieving a maximum efficacy of 77.42%, slightly below the 88.51% efficacy attained with difenoconazole. Additional field trials are necessary to verify the protective and growth-promoting effects of these candidates, whether applied individually, combined in consortia, or integrated with chemical inputs in sugar beet crop production.

1 June 2026 in Non-coding RNA Research
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CBChaimae Baiddou
Chaimae Baiddou
MKMehdi Knidiri
Mehdi Knidiri
BGBouchra Ghazi
Bouchra Ghazi
AOAsmaa Abu Obaid
Asmaa Abu Obaid
SHSalsabil Hamdi
Salsabil Hamdi
KEKhaoula Errafii
Khaoula Errafii
Circular RNAs (circRNAs), a subtype of RNA molecules, possess distinctive characteristics, including their closed circular structure, stability, tissue specificity and long half-life compared to their linear counterparts. Initially presumed to be non-functional byproducts of splicing, advances in RNA-seq and bioinformatics have revealed the existence of these RNAs and begun to clarify their functions. Insight into their diverse functions revealed their roles, including regulating various cellular processes such as gene expression, transcription, translation into proteins (e.g., cap-independent translation), binding to microRNAs (miRNAs), and interacting with proteins. Moreover, mitochondria-encoded circular RNAs (mecciRNAs) have emerged as a novel subclass of circRNAs. Notably circRNAs have been associated with the development or progression of diseases (e.g., cancer, cardiometabolic and neurodegenerative disorders), highlighting diagnostic and therapeutic potential. In our review, we aim to summarize the current knowledge on circRNAs, covering their biogenesis, functions, identification tools, and potential biomedical applications.

17 July 2025 in Molecular Therapy Nucleic Acids
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Journal Article
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IAIkhanjal Mohamed Amine
Ikhanjal Mohamed Amine
HSHamdi Salsabil
Hamdi Salsabil
BFBakkali Fadil
Bakkali Fadil
BABenmoussa Adnane
Benmoussa Adnane
KEKhaoula Errafii
Khaoula Errafii
Type 2 diabetes (T2D) is a complex metabolic disorder with rising global prevalence. This review examines the diverse roles of non-coding RNAs (ncRNAs) in T2D, focusing on their involvement in key biological processes such as insulin signaling, glucose metabolism, oxidative stress, and inflammation. We explore how ncRNAs interact with known T2D risk genes and contribute to epigenetic regulation associated with disease progression. Particular attention is given to the emerging potential of ncRNAs as biomarkers for early diagnosis and as targets for personalized therapeutic strategies. We also discuss current advances in modulating ncRNA expression, including findings from experimental models and clinical trials published between 1998 and 2025. Finally, the review considers how lifestyle factors and common comorbidities influence ncRNA expression, highlighting their wider implications in the context of T2D. Overall, the findings underscore the growing importance of ncRNAs in understanding, diagnosing, and treating T2D.

Verified
Journal Article
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ABAicha Boubker
Aicha Boubker
AOAbdelmoula El Ouardi
Abdelmoula El Ouardi
TKTaha EL KAMLI
Taha EL KAMLI
MKMohammede Kaicer
Mohammede Kaicer
FKFaouzi Kichou
Faouzi Kichou
ASAicha SIFOU
Aicha SIFOU
The phytochemical profiles, antioxidant capacities, mineral composition, and antibacterial activities of Zingiber officinale (Z. officinal) and Piper nigrum (P. nigrum) were explored through aqueous, ethanolic, and methanolic extractions. The extracts were analyzed for polyphenols, flavonoids, and tannins, and their antioxidant potential was assessed using the DPPH assay. UPLC-HRMS identified major bioactive compounds, including 6-gingerol and shogaol in Z. officinale, and piperine and piperlonguminine in P. nigrum. Mineral analysis showed that P. nigrum was particularly rich in essential elements, including calcium (Ca), magnesium (Mg), and iron (Fe). In antibacterial testing, P. nigrum demonstrated wider zones of inhibition against E. coli, whereas Z. officinale was more active at lower concentrations, showing MICs as low as 3.91 µg/mL against Salmonella and S. aureus. PCA analysis revealed strong correlations between phenolic content and biological effects. These results underscore the potential of both spices as effective natural agents for use in food preservation and health-promoting applications.