Publications by authors named "Nancy Jacob"

Objectives: A "patient-researcher" training intervention was designed to improve participants' empowerment by building on their level of critical health literacy and to build a trustful partnership between participants and researchers, with the longer-term objective of co-constructing a community-based research project. The participants in the training intervention were recruited through the collaborative research platform "Seintinelles". This training intervention was aimed at patients or former patients suffering from cancer.

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  • Researchers studied serum levels of 4123 proteins in 1117 patients with heart failure with preserved ejection fraction (HFpEF) to identify prognostic markers linked to clinical outcomes.
  • A total of 288 proteins were found to be significantly associated with heart failure hospitalization and cardiovascular death, with specific proteins like B2M and TIMP1 showing strong correlations.
  • The study concluded that the protein markers for HFpEF are similar to those for heart failure with reduced ejection fraction, implying that the derived proteomic risk scores do not offer improved predictive power for HFpEF patients.
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Introduction:  The environmental impact of endoscopy, including small-bowel capsule endoscopy (SBCE), is a topic of growing attention and concern. This study aimed to evaluate the greenhouse gas (GHG) emissions (kgCO) generated by an SBCE procedure.

Methods:  Life cycle assessment methodology (ISO 14040) was used to evaluate three brands of SBCE device and included emissions generated by patient travel, bowel preparation, capsule examination, and video recording.

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Purpose: In this study, we evaluated readability and understandability of nine French-language Patient-Reported Outcome Measures (PROMs) that are currently used in a contemporary longitudinal cohort of breast cancer survivors as part of an effort to improve equity in cancer care and research.

Methods: Readability of PROMs was assessed using the Flesh Reading Ease Score (FRES), the Gunning's Fog Index (FOG), and the FRY graphics. Readability was considered ideal if mean score ≤ 6th-grade level and acceptable if between 6th and 8th grade.

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Trees form symbioses with ectomycorrhizal (ECM) fungi, maintained in part through mutual benefit to both organisms. Our understanding of the signaling events leading to the successful interaction between the two partners requires further study. This is especially true for understanding the role of volatile signals produced by ECM fungi.

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Background: The spaceflight environment is an extreme environment that affects the immune system of approximately 50% of astronauts. With planned long-duration missions, such as the deployment of the Lunar Gateway and possible interplanetary missions, it is mandatory to determine how all components of the immune system are affected, which will allow the establishment of countermeasures to preserve astronaut health. However, despite being an important component of the immune system, antibody-mediated humoral immunity has rarely been investigated in the context of the effects of the space environment.

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Chronic diseases such as cystic fibrosis, inflammatory bowel diseases, rheumatoid arthritis, and cardiovascular illness have been linked to a decrease in selenium levels and an increase in oxidative stress. Selenium is an essential trace element that exhibits antioxidant properties, with selenocysteine enzymes like glutathione peroxidase being particularly effective at reducing peroxides. In this study, a series of synthetic organoselenium compounds were synthesized and evaluated for their potential antioxidant activities.

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Purpose: Radiotherapy is, with surgery, one of the main therapeutic treatment strategies for meningiomas. No prospective study has defined a consensus for the delineation of target volumes for meningioma radiotherapy. Therefore, target volume definition is mainly based on information from retrospective studies that include heterogeneous patient populations.

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Although we have sent humans into space for more than 50 years, crucial questions regarding immune response in space conditions remain unanswered. There are many complex interactions between the immune system and other physiological systems in the human body. This makes it difficult to study the combined long-term effects of space stressors such as radiation and microgravity.

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  • The study looked at how doctors treat a type of brain cancer called primary central nervous system lymphoma (PCNSL) using radiation therapy.
  • Researchers checked the records of 79 patients who had this treatment between 2011 and 2018, and found that many doctors didn’t follow the recommended radiation doses and areas that should be treated.
  • The study suggests that doctors should better follow guidelines for radiation to help patients survive longer and avoid cancer coming back, and they recommend updating these guidelines.
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During biosynthesis by multi-modular trans-AT polyketide synthases, polyketide structural space can be expanded by conversion of initially-formed electrophilic β-ketones into β-alkyl groups. These multi-step transformations are catalysed by 3-hydroxy-3-methylgluratryl synthase cassettes of enzymes. While mechanistic aspects of these reactions have been delineated, little information is available concerning how the cassettes select the specific polyketide intermediate(s) to target.

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Objective: To evaluate the safety and efficacy of the Xen® implant for the treatment of open-angle glaucoma.

Material And Method: Retrospective study including patients who received the Xen® implant between January 2019 and December 2020 in a university hospital. Demographic and medical data were collected using DxCare® software.

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During a previous study that identified plants used in traditional medicine in Togo to treat infectious diseases, was specifically reported to treat intertrigo and candidiasis. Consequently, to explore the anti-infective potential of this plant, we investigated the antibacterial and the antifungal activity of the plant's parts, as well as the cytotoxic activities of raw extracts and subsequent fractions, and the chemical composition of the most active fractions. In order to evaluate the antimicrobial activity, MICs were determined using the broth dilution method.

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Postural instability and loss of vestibular and somatosensory acuity can be part of the signs encountered in Parkinson's Disease (PD). Visual dependency is described in PD. These modifications of sensory input hierarchy are predictors of motion sickness (MS).

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Progressive neurocognitive pathologies frequently alter the architecture of sleep with: advanced sleep phase or phase delay, sleep fragmentation, decrease of slow-wave sleep, REM sleep, nocturnal agitation and wandering or even complete reversal of the nycthemeral rhythm. This has a clear impact on the health and quality of life of the patient. Hospitalization increases the risk of sleep disturbances due to inactivity, some sensory deprivation and daytime hypovigilance.

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The identification of safe and easily-determined-inflight biomarkers to monitor the immune system of astronauts is mandatory to ensure their well-being and the success of the missions. In this report, we evaluated the relevance of two biomarkers whose determination could be easily implemented in a spacecraft in the near future by using bedridden volunteers as a ground-based model of the microgravity of spaceflight. Our data confirm the relevance of the neutrophil to lymphocyte ratio (NLR) and suggest platelet to lymphocyte ratio (PLR) monitoring to assess long-lasting immune diseases.

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The CRISPR/Cas system, which has been widely applied to organisms ranging from microbes to animals, is currently being adapted for use in Streptomyces bacteria. In this case, it is notably applied to rationally modify the biosynthetic pathways giving rise to the polyketide natural products, which are heavily exploited in the medical and agricultural arenas. Our aim here is to provide the potential user with a practical guide to exploit this approach for manipulating polyketide biosynthesis, by treating key experimental aspects including vector choice, design of the basic engineering components, and trouble-shooting.

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Background: Elevated body mass index (BMI) represents a risk factor for cancer-related fatigue (CRF). Weight loss interventions are feasible and safe in cancer survivors, leading to improved cardio-metabolic and quality of life (QOL) outcomes and modulating inflammatory biomarkers. Randomized data are lacking showing that a lifestyle intervention aimed at weight loss, combining improved diet, exercise, and motivational counseling, reduces CRF.

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The modular organization of the type I polyketide synthases (PKSs) would seem propitious for rational engineering of desirable analogous. However, despite decades of efforts, such experiments remain largely inefficient. Here, we combine multiple, state-of-the-art approaches to reprogram the stambomycin PKS by deleting seven internal modules.

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  • R-CHOP immuno-chemotherapy is effective for treating diffuse large B-cell lymphoma (DLBCL), but a significant percentage (30-40%) of patients either don't respond or relapse.
  • Researchers have identified the protein CYCLON as a key factor linked to disease progression and treatment resistance in DLBCL, establishing it as a potential predictor of poor outcomes.
  • The study also highlights the interaction between CYCLON and NPM1, suggesting that their co-expression and specific locations within the cell could provide insights for developing more tailored treatment strategies for high-risk DLBCL patients.
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  • The HERMES consortium is focused on understanding the genomic and molecular factors that contribute to heart failure by analyzing data from a large number of studies worldwide.
  • It includes 51 studies from 11 countries, gathering data from over 68,000 heart failure cases and nearly 950,000 controls, with broad demographic representation and long follow-up periods.
  • The main goals are to identify genetic risk factors for heart failure, explore causal pathways, and create tools to help stratify patients and predict risks based on their genetic information.
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  • Diffuse large B-cell lymphoma (DLBCL) is a diverse cancer type treated primarily with the R-CHOP immuno-chemotherapy regimen, but about 30% of patients do not respond or experience a relapse.
  • This study examined the expression of biomarkers like c-MYC, p53, and others in a cohort of 94 DLBCL patients to understand their correlation with patient outcomes and tumor characteristics.
  • Results showed that p53 overexpression was linked to poorer outcomes, while the “starry-sky” tissue pattern indicated better survival in certain high-risk DLBCL patients, suggesting that these biomarkers can help inform prognosis and treatment strategies.
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Plants produce ∼300 aromatic compounds enzymatically linked to prenyl side chains via C-O bonds. These -prenylated aromatic compounds have been found in taxonomically distant plant taxa, with some of them being beneficial or detrimental to human health. Although their -prenyl moieties often play crucial roles in the biological activities of these compounds, no plant gene encoding an aromatic -prenyltransferase (-PT) has been isolated to date.

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Purpose: Meningiomas represent the most frequent tumor of the central nervous system in adults. While most meningiomas are efficiently treated by surgery and radiotherapy/radiosurgery, there is a small portion of radiation- and surgery-refractory tumors for which there is no clear recommendation for optimal management. The French National Tumor Board Meeting on Meningiomas (NTBM) offers a glimpse on the current management of such patients.

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