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2.
Can Fam Physician ; 70(9): 530-532, 2024 Sep.
Article in English | MEDLINE | ID: mdl-39271230
3.
Campbell Syst Rev ; 20(3): e1419, 2024 Sep.
Article in English | MEDLINE | ID: mdl-39211334

ABSTRACT

Background: The examination of psychometric properties in instruments measuring abuse of older people (AOP) is a crucial area of study that has, unfortunately, received relatively little attention. Poor psychometric properties in AOP measurement instruments can significantly contribute to inconsistencies in prevalence estimates, casting a shadow of uncertainty over the magnitude of the problem at national, regional, and global levels. Objectives: This review rigorously employed the Consensus-based Standards for the Selection of Health Measurement Instruments (COSMIN) guideline on the quality of outcome measures. It was designed to identify and review the instruments used to measure AOP, assess the instruments' measurement properties, and identify the definitions of AOP and abuse subtypes measured by these instruments, ensuring the reliability and validity of the findings. Search Methods: A comprehensive search was conducted up to May 2023 across various online databases, including AgeLine via EBSCOhost, ASSIA via ProQuest, CINAHL via EBSCOhost, EMBASE, LILACS, ProQuest Dissertation & Theses Global, PsycINFO via EBSCOhost, PubMed, SciELO, Scopus, Sociological Abstract via ProQuest, Chinese National Knowledge Infrastructure (CNKI), Google Scholar and WHO Global Index Medicus. Additionally, relevant studies were identified by thoroughly searching the grey literature from resources such as Campbell Collaboration, OpenAIRE, and GRAFT. Selection Criteria: All quantitative, qualitative (addressing face and content validity), and mixed-method empirical studies published in peer-reviewed journals or grey literature were included in this review. The included studies were primary studies that (1) evaluated one or more psychometric properties, (2) contained information on instrument development, or (3) examined the content validity of the instruments designed to measure AOP in community or institutional settings. The selected studies describe at least one psychometric property: reliability, validity, and responsiveness. Study participants represent the population of interest, including males and females aged 60 or older in community or institutional settings. Data Collection and Analysis: Two reviewers evaluated the screening of the selected studies' titles, abstracts, and full texts based on the preset selection criteria. Two reviewers assessed the quality of each study using the COSMIN Risk of Bias checklist and the overall quality of evidence for each psychometric property of the instrument against the updated COSMIN criteria of good measurement properties. Disagreements were resolved through consensus discussion or with assistance from a third reviewer. The overall quality of the measurement instrument was graded using a modified GRADE approach. Data extraction was performed using data extraction forms adapted from the COSMIN Guideline for Systematic Reviews of Outcome Measurement Instruments. The extracted data included information on the characteristics of included instruments (name, adaptation, language used, translation and country of origin), characteristics of the tested population, instrument development, psychometric properties listed in the COSMIN criteria, including details on content validity, structural validity, internal consistency, cross-cultural validity/measurement invariance, reliability, measurement error, criterion validity, hypotheses testing for construct validity, responsiveness, and interoperability. All data were synthesised and summarised qualitatively, and no meta-analysis was performed. Main Results: We found 15,200 potentially relevant records, of which 382 were screened in full text. A total of 114 studies that met the inclusion criteria were included. Four studies reported on more than one instrument. The primary reasons for excluding studies were their focus on instruments used solely for screening and diagnostic purposes, those conducted in hospital settings, or those without evaluating psychometric properties. Eighty-seven studies reported on 46 original instruments and 29 studies on 22 modified versions of an original instrument. The majority of the studies were conducted in community settings (97 studies) from the perspective of older adults (90 studies) and were conducted in high-income countries (69 studies). Ninety-five studies assessed multiple forms of abuse, ranging from 2 to 13 different subscales; four studies measured overall abuse and neglect among older adults, and 14 studies measured one specific type of abuse. Approximately one-quarter of the included studies reported on the psychometric properties of the most frequently used measurement instruments: HS-EAST (assessed in 11 studies), VASS-12 items (in 9 studies), and CASE (in 9 studies). The instruments with the most evidence available in studies reporting on instrument development and content validity in all domains (relevance, comprehensiveness and comprehensibility) were the DEAQ, OAPAM, *RAAL-31 items, *ICNH (Norwegian) and OAFEM. For other psychometric properties, instruments with the most evidence available in terms of the number of studies were the HS-EAST (11 studies across 5 of 9 psychometric properties), CASE (9 studies across 6 of 9 psychometric properties), VASS-12 items (9 studies across 5 of 9 psychometric properties) and GMS (5 studies across 4 of 9 psychometric properties). Based on the overall rating and quality of evidence, the psychometric properties of the AOP measurement instruments used for prevalence measurement in community and institutional settings were insufficient and of low quality. Authors' Conclusions: This review aimed to assess the overall rating and quality of evidence for instruments measuring AOP in the community and institutional settings. Our findings revealed various measurement instruments, with ratings and evidence quality predominantly indicating insufficiency and low quality. In summary, the psychometric properties of AOP measurement instruments have not been comprehensively investigated, and existing instruments lack sufficient evidence to support their validity and reliability.

4.
J Control Release ; 374: 171-180, 2024 Oct.
Article in English | MEDLINE | ID: mdl-39128771

ABSTRACT

MYC is one of the most important therapeutic targets in human cancer. Many attempts have been made to develop small molecules that could be used to curb its activity in patients, but most failed to identify a suitable direct inhibitor. After years of preclinical characterization, a tissue-penetrating peptide MYC inhibitor, called Omomyc, has been recently successfully used in a Phase I dose escalation study in late-stage, all-comers solid tumour patients. The study showed drug safety and positive signs of clinical activity, prompting the beginning of a new Phase Ib combination study currently ongoing in metastatic pancreatic adenocarcinoma patients. In this manuscript, we have explored the possibility to improve Omomyc targeting to specific cancer subtypes by linking it to a therapeutic antibody. The new immunoconjugate, called EV20/Omomyc, was developed by linking a humanised anti-HER3 antibody, named EV20, to Omomyc using a bifunctional linker. EV20/Omomyc shows antigen-dependent penetrating activity and therapeutic efficacy in a metastatic model of neuroblastoma. This study suggests that directing Omomyc into specific cell types using antibodies recognising tumour antigens could improve its therapeutic activity in specific indications, like in the paediatric setting.


Subject(s)
Immunoconjugates , Proto-Oncogene Proteins c-myc , Receptor, ErbB-3 , Immunoconjugates/administration & dosage , Immunoconjugates/chemistry , Immunoconjugates/pharmacology , Humans , Animals , Receptor, ErbB-3/antagonists & inhibitors , Receptor, ErbB-3/immunology , Cell Line, Tumor , Proto-Oncogene Proteins c-myc/antagonists & inhibitors , Proto-Oncogene Proteins c-myc/immunology , Neuroblastoma/drug therapy , Neuroblastoma/immunology , Female , Antineoplastic Agents/administration & dosage , Antineoplastic Agents/chemistry , Antineoplastic Agents/therapeutic use , Antineoplastic Agents/pharmacology
5.
Sante Publique ; 36(3): 9-20, 2024.
Article in French | MEDLINE | ID: mdl-38906818

ABSTRACT

INTRODUCTION: Health professionals’ social responsibility in health resists translation into skills that can be taught and implemented concretely in professional practice. PURPOSE OF THE RESEARCH: This study, conducted by the Réseau International Francophone pour la Responsabilité Sociale en Santé (RIFRESS), aims to develop a consensus on the components of doctors’ social responsibility in health from the perspective of experts in medical education. Its findings are intended to inform the creation of a skills profile. A three-round Delphi consensus method was used, with an open first round and closed second and third rounds. Mesydel software was used to organize the process and to do the qualitative analysis of the first round. SPSS was used for consensus analysis for rounds 2 and 3. RESULTS: Thirty-four experts responded to the study. During the first round, 62 codes emerged, grouped into 13 themes. From the initial analysis, 40 items were submitted for the Delphi round 2. Of these 40 items, 23 came out consensual after the second round, as did 13 of the 18 resubmitted items after the third. Examples of items that emerged as consensual are eco-responsibility, advocacy, defense of the common good, critical analysis of practice, and collaborative leadership. CONCLUSIONS: The present study represents a much-needed effort to concretely define the components of doctors’ social responsibility in health. Local context must be taken into account when using these findings. They can help to train tomorrow’s doctors to better meet the priority health needs of society in a profoundly changing world.


Subject(s)
Delphi Technique , Social Responsibility , Humans , Internationality , Consensus , Female , Male
6.
Nat Med ; 30(3): 762-771, 2024 Mar.
Article in English | MEDLINE | ID: mdl-38321218

ABSTRACT

Among the 'most wanted' targets in cancer therapy is the oncogene MYC, which coordinates key transcriptional programs in tumor development and maintenance. It has, however, long been considered undruggable. OMO-103 is a MYC inhibitor consisting of a 91-amino acid miniprotein. Here we present results from a phase 1 study of OMO-103 in advanced solid tumors, established to examine safety and tolerability as primary outcomes and pharmacokinetics, recommended phase 2 dose and preliminary signs of activity as secondary ones. A classical 3 + 3 design was used for dose escalation of weekly intravenous, single-agent OMO-103 administration in 21-day cycles, encompassing six dose levels (DLs). A total of 22 patients were enrolled, with treatment maintained until disease progression. The most common adverse events were grade 1 infusion-related reactions, occurring in ten patients. One dose-limiting toxicity occurred at DL5. Pharmacokinetics showed nonlinearity, with tissue saturation signs at DL5 and a terminal half-life in serum of 40 h. Of the 19 patients evaluable for response, 12 reached the predefined 9-week time point for assessment of drug antitumor activity, eight of those showing stable disease by computed tomography. One patient defined as stable disease by response evaluation criteria in solid tumors showed a 49% reduction in total tumor volume at best response. Transcriptomic analysis supported target engagement in tumor biopsies. In addition, we identified soluble factors that are potential pharmacodynamic and predictive response markers. Based on all these data, the recommended phase 2 dose was determined as DL5 (6.48 mg kg-1).ClinicalTrials.gov identifier: NCT04808362 .


Subject(s)
Neoplasms , Humans , Neoplasms/drug therapy , Neoplasms/genetics , Neoplasms/pathology
7.
J Interpers Violence ; 39(9-10): 2318-2343, 2024 May.
Article in English | MEDLINE | ID: mdl-38149594

ABSTRACT

Sexual violence is considered a prominent mental health problem. Exposure to sexual victimization during lifetime has been linked to mental health problems in old age. Research in adult victims has shown that they experience many barriers for disclosure and seeking professional help upon sexual victimization. However, information on help-seeking behavior in older victims of sexual violence is non-existent. With this study we aim for a better understanding of help-seeking behavior upon sexual violence in older adults. We used a mixed methods approach with an explanatory sequential design. Data were collected through structured face-to-face interviews with a random sample of 227 sexual violence victims of 70 years and older living in Belgium. Quantitative data were triangulated with qualitative data from 15 in-depth interviews with older victims. We found that up to 60% of older sexual violence victims never disclosed their experiences and 94% never sought professional help. Help-seeking is a complex process comprising several phases, which are affected by strong feelings of shame and self-blame, ageist premises and taboos about sexuality. In the end, most victims choose to cope on their own. Occasional disclosure only happens decades after the sexual violence took place. Older victims do not spontaneously disclose to healthcare workers but expect professionals to initiate the conversation. In conclusion, few older victims disclose or seek professional help upon sexual victimization. Healthcare professionals working with older adults need capacity building through training, screening tools, and care procedures to initiate conversation on sexual violence, and to detect signs, prevent, mitigate and respond to sexual victimization in older adults.


Subject(s)
Crime Victims , Help-Seeking Behavior , Sex Offenses , Humans , Aged , Crime Victims/psychology , Sex Offenses/psychology , Disclosure , Sexuality , Sexual Behavior
8.
J Elder Abuse Negl ; 35(4-5): 174-211, 2023.
Article in English | MEDLINE | ID: mdl-38073175

ABSTRACT

Resident-to-resident aggression (RRA) is an important issue in congregate residential facilities (CRFs) for older adults and has devastating effects. This study aimed to provide an inventory and content analysis of the practices used to counter RRA and promote wellness care for older adults in CRFs. Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, original, peer-reviewed research and systematic reviews published in 14 electronic databases and two gray literature sources were examined. Of the 6196 articles identified, 28 met the inclusion criteria. Practices aimed to prevent, track or intervene in RRA, mostly in long-term care centers, but few were evidence-based and ready for widespread implementation. It emerges that continuous training of staff is necessary and that it should prioritize a person-centered approach. CRFs' managers must promote a culture of wellness care and policymakers should consider the prevention practices to improve the quality of life of older adults in CRFs.


Subject(s)
Aggression , Elder Abuse , Aged , Humans , Nursing Homes , Quality of Life , Elder Abuse/prevention & control , Residential Facilities
9.
Cancer Drug Resist ; 6(2): 205-222, 2023.
Article in English | MEDLINE | ID: mdl-37457123

ABSTRACT

MYC plays a central role in tumorigenesis by orchestrating cell proliferation, growth and survival, among other transformation mechanisms. In particular, MYC has often been associated with lymphomagenesis. In fact, MYC overexpressing lymphomas such as high-grade B-cell lymphoma (HGBL) and double expressor diffuse large B-cell lymphomas (DLBCL), are considered addicted to MYC. In such a context, MYC targeting therapies are of special interest, as MYC withdrawal is expected to result in tumor regression. However, whether high MYC levels are always predictive of increased sensitivity to these approaches is not clear yet. Even though no MYC inhibitor has received regulatory approval to date, substantial efforts have been made to investigate avenues to render MYC a druggable target. Here, we summarize the different classes of molecules currently under development, which mostly target MYC indirectly in aggressive B-cell lymphomas, paying special attention to subtypes with MYC/BCL2 or BCL6 translocations or overexpression.

10.
CJC Open ; 5(7): 530-536, 2023 Jul.
Article in English | MEDLINE | ID: mdl-37496787

ABSTRACT

Background: Adherence to guidelines is associated with better patient outcomes. Although studies show suboptimal adherence to cardiovascular prevention guidelines among general practitioners, adherence among specialist physicians is understudied. The aim of this analysis was to identify practice gaps among cardiologists in a tertiary academic centre. Methods: We retrospectively audited cardiology outpatient clinic notes taken at the Cardiology Clinic at the Centre hospitalier de l'Université de Montréal (CHUM), from the period January 1, 2019 to February 28, 2019. Data were abstracted from hospital medical records. The primary outcome of interest was the rate of adherence to cardiovascular prevention guidelines. We compared the chart-documented practice at our centre to the Canadian hypertension, lipid, diabetes, antiplatelet, and heart failure guidelines in effect at the time of the audit. We also collected information regarding discussions of smoking, alcohol consumption, physical activity, and diet. Results: A total of 2503 patients were included, with a mean age of 65.6 ± 14.5 years. Dyslipidemia occurred in 63% of patients, hypertension in 55%, and coronary artery disease in 41%. Optimal low-density lipoprotein control was documented as having been achieved in just 39% of cases. Blood pressure control was adequate for 65% of patients, and glycemic control was achieved in 47% of patients with diabetes. Heart failure treatment was optimal in 34% of patients. Nearly all patients with coronary artery disease (95%) had appropriate antithrombotic therapy. The incidence of discussion of nonpharmacologic interventions varied, ranging from 91% (smoking) to 16% (diet). Conclusions: Primary and secondary prevention of cardiovascular events was found to be suboptimal in an academic tertiary-care outpatient cardiology clinic and may be representative of similar shortcomings nationwide. Strategies to ensure guideline adherence are needed.


Contexte: Le respect des lignes directrices est associé à de meilleurs résultats pour les patients. Bien que les études montrent que les omnipraticiens adhèrent de façon sous-optimale aux lignes directrices en matière de prévention des événements cardiovasculaires, l'observance chez les médecins spécialistes n'a pas été assez étudiée. Notre analyse a pour objectif de déceler les lacunes dans la pratique des cardiologues exerçant dans des centres universitaires de soins tertiaires. Méthodologie: Nous avons examiné de manière rétrospective les notes cliniques consignées au dossier des patients du Centre cardiovasculaire du Centre hospitalier de l'Université de Montréal (CHUM) et résumé les données issues des consultations ayant eu lieu du 1er janvier au 28 février 2019. Le principal résultat d'intérêt était le taux d'adhésion aux lignes directrices en matière de prévention des événements cardiovasculaires. Nous avons comparé les pratiques enregistrées dans les dossiers de notre centre aux lignes directrices canadiennes sur la prise en charge de l'hypertension, de la lipidémie, du diabète, du traitement antiplaquettaire et de l'insuffisance cardiaque en place au moment de l'évaluation. Nous avons aussi recueilli de l'information sur les discussions entourant le tabagisme, la consommation d'alcool, l'activité physique et l'alimentation. Résultats: Les données de 2 503 patients, âgés en moyenne de 65,6 ± 14,5 ans, ont été retenues. De ces patients, 63 % présentaient une dyslipidémie, 55 %, une hypertension et 41 %, une maladie coronarienne. Le taux de lipoprotéines de basse densité n'était maîtrisé de façon optimale que dans 39 % des cas. La normalisation de la pression artérielle était adéquate chez 65 % des patients, et 47 % des patients diabétiques atteignaient les cibles glycémiques. L'insuffisance cardiaque était optimalement traitée chez 34 % des patients. Presque tous les patients atteints de maladie coronarienne (95 %) recevaient un traitement antithrombotique approprié. La fréquence des discussions sur les interventions non pharmacologiques variait, allant de 91 % dans le cas du tabagisme à 16 % dans celui de l'alimentation. Conclusions: La prévention primaire et secondaire des événements cardiovasculaires s'est révélée sous-optimale dans une clinique externe de cardiologie d'un hôpital universitaire et pourrait être représentative de lacunes similaires dans l'ensemble du pays. Des stratégies visant à assurer le respect des lignes directrices sont nécessaires.

13.
J Leukoc Biol ; 114(4): 358-367, 2023 09 27.
Article in English | MEDLINE | ID: mdl-37478373

ABSTRACT

Our objective was to characterize T and B cell responses to vaccination with SARS-CoV-2 antigens in immunocompromised rheumatoid arthritis (RA) patients. In 22 RA patients, clinical and biological variables were analyzed before and 4 weeks after each of 3 messenger RNA (mRNA) vaccine doses and compared with unmatched healthy individuals. Sequentially sampled peripheral blood mononuclear cells and sera were collected to determine immune profiles and to analyze the T cell response to a spike peptide pool and B cell specificity to the receptor-binding domain (RBD). Anti-spike antibodies were detectable in 6 of 22 RA patients after 1 dose of vaccine with increasing titers after each booster dose, although the overall response was lower compared with that in healthy control individuals. Responding patients after the first dose were more likely to have RA antibodies and a higher baseline proportion of circulating follicular B cells. In RA patients, the mRNA vaccine elicited a robust CD4+ T response to a spike peptide pool following the first and second doses. Consistent with the serologies, RBD-specific B cells exhibited a modest increase after the first dose and the second dose resulted in marked increases only in a fraction of the RA patients to both ancestral and omicron RBD. Our results highlight the importance of multidose COVID-19 vaccination in RA patients to develop a protective humoral response. However, these patients rapidly develop specific T CD4+ responses, despite delayed B cell responses.


Subject(s)
Arthritis, Rheumatoid , COVID-19 , Humans , COVID-19 Vaccines , SARS-CoV-2 , Leukocytes, Mononuclear , COVID-19/prevention & control , RNA, Messenger/genetics , Immunity , Antibodies, Viral , Vaccination , mRNA Vaccines
14.
Campbell Syst Rev ; 19(3): e1342, 2023 Sep.
Article in English | MEDLINE | ID: mdl-37383829

ABSTRACT

Background: The psychometric properties of elder abuse measurement instruments have not been well-studied. Poor psychometric properties of elder abuse measurement instruments may contribute to the inconsistency of elder abuse prevalence estimates and uncertainty about the magnitude of the problem at the national, regional, and global levels. Objectives: The present review will utilise the COSMIN taxonomy on the quality of outcome measures to identify and review the instruments used in measuring elder abuse, assess the instrument's measurement properties, and identify the definitions of elder abuse and abuse subtypes measured by the instrument. Search Methods: Searches will be conducted in the following online databases: Ageline, ASSIA, CINAHL, CNKI, EMBASE, Google Scholar, LILACS, Proquest Dissertation & Theses Global, PsycINFO, PubMed, SciELO, Scopus, Sociological Abstract and WHO Index Medicus. Relevant studies will also be identified by searching the grey literature from several resources such as OpenAIRE, BASE, OISter and Age Concern NZPotential studies by searching the references of related reviews. We will contact experts who have conducted similar work or are currently conducting ongoing studies. Enquiries will also be sent to the relevant authors if any important data is missing, incomplete or unclear. Selection Criteria: All quantitative, qualitative (that address face and content validity), and mixed-method empirical studies published in peer-reviewed journals or the grey literature will be included in this review. Studies will be included if they are primary studies that (1) evaluate one or more psychometric properties; (2) contain information on instrument development, or (3) perform content validity of the instruments designed to measure elder abuse in the community or institutional settings. Studies should describe at least one of the psychometric properties, such as reliability, validity and responsiveness. Study participants represent the population of interest, including males and females aged 60 or older in community or institutional settings (i.e., nursing homes, long-term care facilities, assisted living, residential care institutions, and residential facilities). Data Collection and Analysis: Screening of titles, abstracts, and full texts of the selected studies will be evaluated based on the preset inclusion criteria by two reviewers. Two reviewers will be assessing the quality appraisal of each study using the COSMIN Risk of Bias checklist and the overall quality of evidence of each psychometric property of the instrument against the updated criteria of good measurement properties. Any dispute between the two reviewers will be resolved through discussions or consensus with a third reviewer. The overall quality of the measurement instrument will be graded using a modified GRADE approach. Data extraction will be performed using the data extraction forms adapted from the COSMIN Guideline for Systematic Reviews of Outcome Measurement Instruments. The information includes the characteristic of included instruments (name, adaptation, language used, translation and country of origin), characteristics of the tested population, psychometric properties listed in the COSMIN criteria, including details on the instrument development, content validity, structural validity, internal consistency, cross-cultural validity/measurement invariance, reliability, measurement error, criterion validity, hypotheses testing for construct validity, responsiveness and interoperability. We will perform a meta-analysis to pool psychometric properties parameters (where possible) or summarise qualitatively.

15.
Gerontol Geriatr Educ ; : 1-22, 2023 May 15.
Article in English | MEDLINE | ID: mdl-37186802

ABSTRACT

Age-related social biases - ageism - are developed at an early age. Interventions to counter ageism have been identified but little is known about their mechanisms, particularly in children. This study aimed to provide a comprehensive understanding of which interventions in youths are most effective, under which circumstances, how, and with what outcomes. Using 46 keywords in 6 databases, a realist review identified 24 studies published between 2000 and 2022 targeting youths under 18. A content analysis of these studies led to the construction of a Context-Mechanisms-Outcomes explanatory model. Contextual facilitators triggering mechanisms for changing stereotypes, prejudices and discrimination were: 1) enhancing knowledge about aging and older adults by providing nuanced information, 2) improving the quality of intergenerational contacts, 3) increasing opportunities to apply previously acquired knowledge in intergenerational interactions, and 4) promoting reflective thinking about experiences with older adults. However, stereotypes and prejudices appeared to be resistant and changes difficult to generalize. Insufficiently advanced cognitive development in children or viewing healthy and socially engaged older adults as unrepresentative of their age group were obstacles that reduced intervention effectiveness. Future studies should explore how advancing age influences interventions as well as the characteristics of older adults involved.

16.
Genes Dev ; 37(7-8): 303-320, 2023 04 01.
Article in English | MEDLINE | ID: mdl-37024284

ABSTRACT

MYC's key role in oncogenesis and tumor progression has long been established for most human cancers. In melanoma, its deregulated activity by amplification of 8q24 chromosome or by upstream signaling coming from activating mutations in the RAS/RAF/MAPK pathway-the most predominantly mutated pathway in this disease-turns MYC into not only a driver but also a facilitator of melanoma progression, with documented effects leading to an aggressive clinical course and resistance to targeted therapy. Here, by making use of Omomyc, the most characterized MYC inhibitor to date that has just successfully completed a phase I clinical trial, we show for the first time that MYC inhibition in melanoma induces remarkable transcriptional modulation, resulting in severely compromised tumor growth and a clear abrogation of metastatic capacity independently of the driver mutation. By reducing MYC's transcriptional footprint in melanoma, Omomyc elicits gene expression profiles remarkably similar to those of patients with good prognosis, underlining the therapeutic potential that such an approach could eventually have in the clinic in this dismal disease.


Subject(s)
Melanoma , Humans , Prognosis , Melanoma/genetics , Signal Transduction , Carcinogenesis , Cell Transformation, Neoplastic , Proto-Oncogene Proteins c-myc/metabolism
18.
Cancers (Basel) ; 15(3)2023 Jan 29.
Article in English | MEDLINE | ID: mdl-36765784

ABSTRACT

MYC is an oncoprotein causally involved in the majority of human cancers and a most wanted target for cancer treatment. Omomyc is the best-characterized MYC dominant negative to date. In the last years, it has been developed into a therapeutic miniprotein for solid tumor treatment and recently reached clinical stage. However, since the in vivo stability of therapeutic proteins, especially within the tumor vicinity, can be affected by proteolytic degradation, the perception of Omomyc as a valid therapeutic agent has been often questioned. In this study, we used a mass spectrometry approach to evaluate the stability of Omomyc in tumor biopsies from murine xenografts following its intravenous administration. Our data strongly support that the integrity of the functional domains of Omomyc (DNA binding and dimerization region) remains preserved in the tumor tissue for at least 72 hours following administration and that the protein shows superior pharmacokinetics in the tumor compartment compared with blood serum.

19.
Can Med Educ J ; 14(6): 114-117, 2023 12.
Article in French | MEDLINE | ID: mdl-38226299

ABSTRACT

We used environmental analysis to document the nature and characteristics of research on social accountability (SA) in health conducted by members of an emerging international Francophone network on SA. We developed a questionnaire focusing on research inputs, activities, and outputs, which could serve as a reference in other institutions and networks. The results provide a better understanding of SA research within the international Francophone community. Networks that aim to promote research among their members should carry out such mapping to leverage the strengths of the community and act as catalysts and stepping stones for future research.


Subject(s)
Research , Social Responsibility
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