Publications by authors named "Refka Jelassi"

Introduction: Colorectal cancer (CRC) is a major public health problem, including in Tunisia. It is classified as the second leading cause of cancer-related mortality on a global scale. The carcinogenesis process is multifactorial, mainly involving genetic and environmental factors.

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Sheep farming plays an important economic role, and it contributes to the livelihoods of many rural poor in several regions worldwide and particularly in Tunisia. Therefore, the steady improvement of ewes' reproductive performance is a pressing need. The gene has been identified as an important candidate gene that plays a key role in sheep reproduction and its sexual inactivity.

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Colorectal cancer (CRC) is a major public health problem worldwide and in Tunisia. It ranks among the main cancers in terms of incidence and cancer-related cause of death. Its pathogenesis is currently considered to be multifactorial involving genetic and environmental factors.

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Unlabelled: Human cytomegalovirus (HCMV) and genetic polymorphisms of the chemokine receptor 5 have been suggested as factors associated with the progression of colorectal cancer (CRC). The aim of the study was to evaluate the associations of both CCR5Δ32 genetic deletion and/or HCMV virus infection with CRC in Tunisia.

Materials And Methods: The association between HCMV and CRC was validated by Nested PCR technology performed for HCMV and HCMV-specific serum IgG and IgM antibodies were investigated by enzyme-linked immunosorbent assay.

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Human leukocyte antigen (HLA)-G has been considered as an immune modulator in several types of cancers. Its genetic polymorphisms may potentially affect the risk of developing colorectal cancer (CRC). The overall purpose of this study was to analyze the implication of HLA-G 3'untranslated region (3'UTR) polymorphisms particularly 14 pb insertion/deletion (Ins/Del; rs371194629) and + 3142C/G (rs1063320) in CRC susceptibility and progression.

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Background: HLA-G is a non-classical class I gene of the human Major Histocompatibility encoding molecules with immune-modulatory properties. Expression of HLA-G is being largely studied in pathological conditions, such as tumors, viral infections, inflammation, and autoimmune diseases, grafted tissues, among others. HLA-G +3142C/G (rs1063320: dbSNP database) polymorphism is located in 3' UTR of HAL-G and plays a key role in determining the magnitude of gene and protein expression.

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Article Synopsis
  • - Cryptosporidiosis, caused by the protozoan parasite Cryptosporidium, can lead to serious diarrhea, especially in immunocompromised individuals, and is a significant global public health concern.
  • - The study aimed to create a new real-time PCR method combined with high-resolution melting (HRM) analysis to detect and distinguish the less-studied Cryptosporidium species C. meleagridis alongside the more common C. hominis and C. parvum.
  • - Findings revealed that the developed qPCR-HRM assay effectively identifies and differentiates between these three species, demonstrating sensitivity and potential for genotyping Cryptosporidium infections.
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