Publications by authors named "Bolni-Marius Nagalo"

Article Synopsis
  • Hepatitis B virus (HBV) is a major global health concern linked to liver disease and cancer, with research focusing on genetic factors that affect its evolution.
  • Recent studies highlighted the ECM1 gene, specifically two polymorphisms (rs3834087 and rs3754217), which may influence HBV pathogenesis, particularly in an African cohort analyzed in this research.
  • The study found that the heterozygous genotype of rs3754217 appears to protect against chronic hepatitis, suggesting that certain genetic variations may impact the severity of the disease in infected individuals.
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Background: Spontaneous regression (SR) of cancer remains a rare phenomenon, particularly in hepatocellular carcinoma (HCC), where limited literature exists. This case report emphasizes the significance of SR in advanced HCC, shedding light on the proposed mechanisms and addressing the scarcity of documented cases in current medical literature.

Case Description: We present the case of a 67-year-old female with a history of localized HCC who underwent right hepatectomy.

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  • About 25% of people with a type of pancreatic cancer called PDAC can't have surgery or have advanced stages, and treatments like chemotherapy and radiation haven't worked well for them.
  • Removing these tumors is hard because of their size and how they connect to nearby blood vessels.
  • A new treatment using special viruses could help by breaking down tough parts of the tumor, allowing better access for other treatments and possibly making the tumors smaller.
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  • Occult hepatitis B infection (OBI) is common worldwide, especially in regions like Africa, and can be spread through blood transfusions and organ transplants, with ties to liver cancer.
  • A systematic review analyzed 83 studies to assess how common and genetically diverse OBI is across different African countries.
  • Findings show OBI prevalence varies widely, peaking at 90.9% in hepatitis C patients and highlighting genotype D as the most prevalent strain in the continent.
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Pancreatic Ductal Adenocarcinoma (PDAC) is projected to become the 2nd leading cause of cancer-related deaths in the United States. Limitations in early detection and treatment barriers contribute to the lack of substantial success in the treatment of this challenging-to-treat malignancy. Desmoplasia is the hallmark of PDAC microenvironment that creates a physical and immunologic barrier.

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  • Melanoma and nonmelanoma skin cancers are leading forms of skin cancer, prompting research for new anticancer compounds through in vitro assays and in-silico methods.
  • Screening of a small library of previously prepared compounds revealed 35 that inhibited the growth of skin cancer cell lines, particularly showing strong effects on A431 and SCC-12 cells.
  • The most effective compounds (11 and 13) induced apoptosis and disrupted cancer-promoting pathways, suggesting potential targets for further study and development in treating skin cancers.
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Arkansas has a high cancer burden, and a pressing need exists for more medical students to pursue oncology as a career. The Partnership in Cancer Research (PCAR) program provides a summer research experience at the University of Arkansas for Medical Sciences for 12 medical students who have completed their first year of medical training. A majority of participants spend time pursuing cancer research in basic science, clinical, or community-based research.

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Twenty-five azole compounds (-) were synthesised using regioselective base-metal catalysed and microwave-assisted approaches, fully characterised by high-resolution mass spectrometry (HRMS), nuclear magnetic resonance (NMR), and infrared spectra (IR) analyses, and evaluated for anticancer, anti-tyrosinase, and anti-oxidant activities and . exhibited potent anticancer activity against cells of four skin cancer (SC) lines, with selectivity for melanoma (A375, SK-Mel-28) or non-melanoma (A431, SCC-12) SC cells over non-cancerous HaCaT-keratinocytes. Clonogenic, scratch-wound, and immunoblotting assay data were consistent with anti-proliferative results, expression profiling therewith implicating intrinsic and extrinsic apoptosis activation.

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Background: Hepatitis B Virus (HBV) infection affect all social strata of humanity and in the absence of any management, this infection has a different outcome from one infected person to another. This suggests that there are specific individual factors that influence the outcome of the pathology. Sex, immunogenetics and age of contraction of the virus have been cited as factors that influence the evolution of the pathology.

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Article Synopsis
  • Vesiculoviruses are promising candidates for cancer treatment due to their rapid replication and ability to target tumors effectively while avoiding immune system detection.
  • Researchers developed a synthetic chimeric virus called VMG, which combines elements from Morreton virus and vesicular stomatitis virus, and found it effectively induced cell death in various sarcoma types across different species.
  • Initial safety tests in healthy mice showed no toxicity, and while VMG didn't suppress tumors in one model, it successfully stimulated immune responses, showing potential as a new oncolytic virotherapy for sarcoma.
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Psoriasis is a chronic autoimmune inflammatory skin disorder characterized by epidermal hyperplasia and aberrant immune response. In addition to aberrant cytokine production, psoriasis is associated with activation of the Akt/mTOR pathway. mTOR/S6K1 regulates T-lymphocyte activation and migration, keratinocytes proliferation and is upregulated in psoriatic lesions.

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Background: Morreton virus (MORV) is an oncolytic Vesiculovirus , genetically distinct from vesicular stomatitis virus (VSV).

Aim: To report that MORV induced potent cytopathic effects (CPEs) in cholangiocarcinoma (CCA) and hepatocellular carcinoma (HCC) in vitro models.

Approach And Results: In preliminary safety analyses, high intranasal doses (up to 10 10 50% tissue culture infectious dose [TCID 50 ]) of MORV were not associated with significant adverse effects in immune competent, non-tumor-bearing mice.

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Vesicular stomatitis virus (VSV), a negative-strand RNA virus of the genus, has demonstrated encouraging anti-neoplastic activity across multiple human cancer types. VSV is particularly attractive as an oncolytic agent because of its broad tropism, fast replication kinetics, and amenability to genetic manipulations. Furthermore, VSV-induced oncolysis can elicit a potent antitumor cytotoxic T-cell response to viral proteins and tumor-associated antigens, resulting in a long-lasting antitumor effect.

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Background And Aims: Biliary tract cancers (BTCs) are uncommon, but highly lethal, gastrointestinal malignancies. Gemcitabine/cisplatin is a standard-of-care systemic therapy, but has a modest impact on survival and harbors toxicities, including myelosuppression, nephropathy, neuropathy, and ototoxicity. Whereas BTCs are characterized by aberrations activating the cyclinD1/cyclin-dependent kinase (CDK)4/6/CDK inhibitor 2a/retinoblastoma pathway, clinical use of CDK4/6 inhibitors as monotherapy is limited by lack of validated biomarkers, diffident preclinical efficacy, and development of acquired drug resistance.

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The past decade has seen a rise in the availability of breakthrough therapeutic strategies for treatment of hepatocellular carcinoma (HCC). A tumor microenvironment in HCC is regulated by various immunotolerance mechanisms; therefore, therapeutic strategies aiming at disrupting tumor immune tolerance are becoming attractive curative options in HCC. Immune checkpoint inhibitors have demonstrated impressive effectiveness in HCC, including in sorafenib-unresponsive patients.

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This article contains supplemental datasets of the recently published related research article by Roy et al., [1]. It provides in-depth data not included in the original co-submission on the biophysical, molecular docking, and biological characterization of newly synthesized flavonol-based analogs of fisetin, a natural dietary small molecule with anticancer and anti-inflammatory properties.

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Due to hurdles, including resistance, adverse effects, and poor bioavailability, among others linked with existing therapies, there is an urgent unmet need to devise new, safe, and more effective treatment modalities for skin cancers. Herein, a series of flavonol-based derivatives of fisetin, a plant-based flavonoid identified as an anti-tumorigenic agent targeting the mammalian targets of rapamycin (mTOR)-regulated pathways, were synthesized and fully characterized. New potential inhibitors of receptor tyrosine kinases (c-KITs), cyclin-dependent kinase-2 (CDK2), and mTOR, representing attractive therapeutic targets for melanoma and non-melanoma skin cancers (NMSCs) treatment, were identified using inverse-docking, in vitro kinase activity and various cell-based anticancer screening assays.

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Article Synopsis
  • Hepatitis B virus genotype E is prevalent in West Africa, being the most common strain found in chronic hepatitis B patients.
  • Factors linked to the development of hepatocellular carcinoma (HCC) include older age, male sex, and higher levels of HBV in the blood.
  • Patients with HBV-E had lower hepatitis B e antigen (HBeAg) prevalence and viral load, but a higher rate of cirrhosis compared to those with another genotype (C/E), highlighting the need for tailored management strategies in the region.
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Recombinant vesicular stomatitis virus (VSV)-fusion and hemagglutinin (FH) was developed by substituting the promiscuous VSV-G glycoprotein (G) gene in the backbone of VSV with genes encoding for the measles virus envelope proteins F and H. Hybrid VSV-FH exhibited a multifaceted mechanism of cancer-cell killing and improved neurotolerability over parental VSV in preclinical studies. In this study, we evaluated VSV-FH and in models of hepatobiliary and pancreatic cancers.

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Article Synopsis
  • NUC1031 is a new pro-drug designed to improve outcomes in biliary tract cancer (BTC) by addressing resistance mechanisms associated with the standard treatment gemcitabine.
  • Comprehensive testing showed that NUC1031 was less effective than gemcitabine in both lab and animal models, with no additional benefits when combined with cisplatin.
  • Findings indicate that NUC1031 did not perform better than gemcitabine, suggesting the need for a cautious approach to its ongoing clinical trials comparing the two treatments.
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Objectives Natural products commonly used in traditional medicine, such as essential oils (EOs), are attractive sources for the development of molecules with anti-proliferative activities for future treatment of human cancers, e.g., prostate and cervical cancer.

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Background: Glutathione S-transferases play a key role in the detoxification of persistent oxidative stress products which are one of several risks factors that may be associated with many types of disease processes such as cancer, diabetes, and hypertension. In the present study, we characterize the null genotypes of GSTM1 and GSTT1 in order to investigate the association between them and the risk of developing essential hypertension.

Methods: We conducted a case-control study in Burkina Faso, including 245 subjects with essential hypertension as case and 269 control subjects with normal blood pressure.

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Objectives A cluster of specialized KIR genes of specialized KIR genes has been shown to be associated with susceptibility or resistance to viral infections in humans. Therefore, this pilot study, this pilot investigation sought to determine the frequencies of KIR genes human immunodeficiency virus type 1( HIV-1) patients and establish their potential clinical involvement in disease progression and staging. Methods HIV-1 infected and healthy individuals were selected for this study.

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Background: Genetic and environment play a significant role in the etiology of essential hypertension (EH). Recently STK39 rs3754777, ATP2B1 rs2681472 and rs17249754 have been associated with BP variation and hypertension. In this study we aimed to determine firstly whether index variants were associated with the risk of developing EH in Burkina Faso and secondly to characterize cardiovascular risk markers.

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Article Synopsis
  • Blood-borne pathogens like HIV, hepatitis B (HBV), and hepatitis C (HCV) are significant health issues in sub-Saharan Africa, prompting a study on their prevalence among blood donors in Koula-Moutou, Gabon from 2012 to 2017.
  • In a screening of 5,706 blood donors, 18.5% tested positive for at least one infectious marker, with seroprevalence rates of 3.1% for HIV, 5.9% for HBV, 6.2% for HCV, and 3.3% for syphilis; notably, multiplex infections were present in 5.6% of donors.
  • The study
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