Publications by authors named "Nigris F"

Article Synopsis
  • RNA modifications, known as "epitranscriptome" alterations, are crucial in regulating various cellular networks and are particularly relevant in cardiovascular diseases, especially during the progression of atherosclerosis.
  • Key RNA modifications include m6A, m5C, m1A, m7G, Ψ, and A-to-I editing, with ongoing research focused on targeting enzymes related to these modifications, like METTL3 and FTO, using small molecule inhibitors or activators.
  • Identifying drug candidates for RNA epitranscriptome modulation presents a major challenge, but promising findings include Panax notoginseng and rhein, which may enhance mRNA m6A levels and provide insights into developing biomarkers for better prediction
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We describe here the design and antitumor evaluation of benzofuroxan-based nitric oxide (NO)-donor hybrid derivatives targeting human carbonic anhydrases (hCAs) IX and XII. The most effective compounds, and , demonstrated potent dual action, exhibiting low nanomolar inhibition constants against hCA IX and significant NO release. Notably, compound showed significant antiproliferative effects against various cancer cell lines, particularly renal carcinoma A-498 cells.

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Introduction: The purine analog 6-thioguanine (6TG), an old drug approved in the 60s to treat acute myeloid leukemia (AML), was tested in the diabetic retinopathy (DR) experimental setting along with a molecular modeling approach.

Methods: A computational analysis was performed to investigate the interaction of 6TG with MC1R and MC5R. This was confirmed in human umbilical vein endothelial cells (HUVECs) exposed to high glucose (25 mM) for 24 h.

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Abnormal vasculature in solid tumors causes poor blood perfusion, hypoxia, low pH, and immune evasion. It also shapes the tumor microenvironment and affects response to immunotherapy. The combination of antiangiogenic therapy and immunotherapy has emerged as a promising approach to normalize vasculature and unlock the full potential of immunotherapy.

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Genomic-based precision medicine has not only improved tumour therapy but has also shown its weaknesses. Genomic profiling and mutation analysis have identified alterations that play a major role in sarcoma pathogenesis and evolution. However, they have not been sufficient in predicting tumour vulnerability and advancing treatment.

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Article Synopsis
  • Clear cell renal cell carcinoma (ccRCC) is the most common type of kidney cancer, and this study explores targeting the interaction between mitochondria and lysosomes as a new treatment method using patient-derived organoids.
  • Researchers found that the overexpression of the Purinergic receptor 4 (P2XR4) in ccRCC affects mitochondrial activity, leading to increased cellular stress and eventual cell death, which highlights P2XR4 as a potential therapeutic target.
  • Inhibiting P2XR4 showed promising results in reducing tumor size and increasing sensitivity in patient-derived organoids and xenograft models, suggesting that targeting this receptor may improve treatment outcomes for patients with ccRCC.
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Both progression from the early pathogenic events to clinically manifest cardiovascular diseases (CVD) and cancer impact the integrity of the vascular system. Pathological vascular modifications are affected by interplay between endothelial cells and their microenvironment. Soluble factors, extracellular matrix molecules and extracellular vesicles (EVs) are emerging determinants of this network that trigger specific signals in target cells.

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Early in the COVID-19 pandemic, it emerged that the risk of severe outcomes was greater in patients with co-morbidities, including cancer. The huge effort undertaken to fight the pandemic, affects the management of cancer care, influencing their outcome. Despite the high fatality rate of COVID-19 disease in cancer patients, rare cases of temporary or prolonged clinical remission from cancers after SARS-CoV-2 infection have been reported.

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Trimethylamine N-oxide (TMAO) is a microbial metabolite derived from nutrients, such as choline, L-carnitine, ergothioneine and betaine. Recently, it has come under the spotlight for its close interactions with gut microbiota and implications for gastrointestinal cancers, cardiovascular disease, and systemic inflammation. The culprits in the origin of these pathologies may be food sources, in particular, high fat meat, offal, egg yolk, whole dairy products, and fatty fish, but intercalated between these food sources and the production of pro-inflammatory TMAO, the composition of gut microbiota plays an important role in modulating this process.

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This study investigated the long-term outcomes of patients treated with open surgical repair for complex abdominal aortic aneurysms (c-AAAs). A total of 119 patients with c-AAAs undergoing repair between January 2010 and June 2016 in a high-volume aortic center were included. The long-term imaging follow-up consisted of yearly abdominal ultrasound examinations and 5-year computed tomography angiography.

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Aortic arch repair is a challenging intervention. Open surgical repair is still considered the gold standard, but in high-risk patients, it is not always a reasonable option, making endovascular approaches an enticing, when not the only available, alternative for treatment. The strategies more commonly adopted are surgical supra-aortic trunk (SAT) rerouting followed by deployment of a standard thoracic endoprosthesis, chimney techniques, custom-made scalloped, fenestrated, and branched devices, and in situ or physician-modified fenestrations.

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The major histocompatibility complex (MHC) class I expression in cancer cells has a crucial impact on the outcome of T cell-mediated cancer immunotherapy. We now determined the HLA class I allelic variants and their expression in PD-L1-deficient and positive rare sarcoma tissues. Tumor tissues were HLA-I classified based on HLA-A and -B alleles, and for class II, the HLA-DR-B by Taqman genomic PCRs.

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The E-nside multibranched stent graft (Jotec GmbH, Hechingen, Germany) is the first and only off-the-shelf thoracoabdominal prosthesis with precannulated inner branches. Usually, after the device deployment, target vessel stenting will be facilitated by antegrade inner branch cannulation to retrieve the precannulated guide. In the literature, the use of antegrade access has been associated with the potential risk of cerebral and systemic embolization.

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Article Synopsis
  • Research indicates that maternal cholesterol levels during pregnancy may increase the risk of atherosclerotic disease in their offspring, though the specific mechanisms are still unclear.
  • A study analyzed fetal aorta samples from aborted fetuses of mothers with normal and high cholesterol, finding significant DNA methylation changes in the SREBF2 gene in those from hypercholesterolemic mothers.
  • The results suggest a need for improved cardiovascular prevention programs for children of mothers with high cholesterol and highlight the importance of further investigating the epigenetic factors related to this issue.
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The tumor microenvironment modulates cancer growth. Extracellular vesicles (EVs) have been identified as key mediators of intercellular communication, but their role in tumor growth is largely unexplored. Here, we demonstrate that EVs from sarcoma patients promote neoangiogenesis via a purinergic X receptor 4 (P2XR4) -dependent mechanism in vitro and in vivo.

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Article Synopsis
  • Many childhood cancer survivors skip long-term check-ups for issues related to their treatment, leading to a high rate of secondary health problems.
  • A study used interviews to gather insights from healthcare providers, patients, and caregivers about the factors that can affect follow-up care after cancer therapy.
  • The findings revealed that while providers focused on institutional operations and communication strategies, patients and families placed more emphasis on personal interactions and the clinic's environment, highlighting the need for tailored approaches to support survivorship care.
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Objective: During pancreatic surgery for malignancies, hepatic revascularization is needed in case of en bloc resection with hepatic artery involvement. In these cases, the use of the splenic artery is described in the literature, including transposition and interposition techniques.

Patients And Methods: We report the case of pancreatic cancer resection with involvement of the right hepatic artery, anomalous arising from the superior mesenteric artery, and hepatic revascularization with splenic artery reconstruction.

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Thoracic endovascular aortic repair (TEVAR) is a life-saving treatment for blunt thoracic aortic injury. We report long-term outcomes of two young patients who underwent TEVAR for blunt thoracic aortic injury with first-generation thoracic stent grafts. The off-label use of the endograft affected the outcomes: one case of open surgery conversion due to an aortoesophageal fistula and one case of endovascular relining for a voluminous pseudoaneurysm associated with a type III endoleak.

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Purpose Of Review: Cardiovascular diseases (CVDs) are typically caused by multifactorial events including mutations in a large number of genes. Epigenetic-derived modifications in the cells are normal but can be amended by aging, lifestyle, and exposure to toxic substances. Major epigenetic modifications are DNA methylation, histone modification, chromatin remodeling as well as the noncoding RNAs.

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Article Synopsis
  • The study aimed to evaluate the effectiveness and safety of SB5 in patients with inflammatory bowel disease (IBD) who were either new to treatment or switched from the original adalimumab (ADA).
  • In the naïve group, 60.42% achieved remission after 12 months, while the switching group had a higher remission rate of 89.02%.
  • Although 36.3% of patients experienced side effects, mainly injection site pain, no new antidrug antibodies developed in those who switched, indicating that SB5 is a viable treatment option for IBD.
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Neuroendocrine tumors, or NETs, are cancer originating in neuroendocrine cells. They are mostly found in the gastrointestinal tract or lungs. Functional NETs are characterized by signs and symptoms caused by the oversecretion of hormones and other substances, but most NETs are non-functioning and diagnosis in advanced stages is common.

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Adventitial cystic disease of the venous system is an extremely rare condition. Forty-five cases have been described in the literature during the last 70 years, but they may not be representative of the real incidence of this pathologic process. We report a case of an adventitial cyst compressing the right external iliac vein and presenting with edema of the ipsilateral leg.

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The study of epigenetics reaches its 50th anniversary, however, its clinical application is gradually coming into the clinical setting. Osteoporosis is one of the major and widely diffused bone diseases. Pathogenic mechanisms at the epigenetic level may interfere with bone remodeling occurring during osteoporosis.

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Understanding the complex epigenome of advanced renal cell carcinoma may lead to novel epigenomic-based pharmaceutical strategies and identify new targets for therapeutic interventions. Epigenetic changes, such as DNA methylation and histone acetylation, modulate the activity of significant oncogenic signaling pathways by regulating gene expression. Such pathways include the WNT-β-catenin pathway, the von Hippel-Lindau-hypoxia-inducible factor pathway, and epithelial-mesenchymal transition pathway.

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