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1.
bioRxiv ; 2024 Sep 14.
Artigo em Inglês | MEDLINE | ID: mdl-39314333

RESUMO

Amyotrophic lateral sclerosis (ALS) is an age-related and fatal neurodegenerative disease characterized by progressive muscle weakness. There is marked heterogeneity in clinical presentation, progression, and pathophysiology with only modest treatments to slow disease progression. Molecular markers that provide insight into this heterogeneity are crucial for clinical management and identification of new therapeutic targets. In a prior muscle miRNA sequencing investigation, we identified altered FGF pathways in ALS muscle, leading us to investigate FGF21. We analyzed human ALS muscle biopsy samples and found a large increase in FGF21 expression with localization to atrophic myofibers and surrounding endomysium. A concomitant increase in FGF21 was detected in ALS spinal cords which correlated with muscle levels. FGF21 was increased in the SOD1G93A mouse beginning in presymptomatic stages. In parallel, there was dysregulation of the co-receptor, ß-Klotho. Plasma FGF21 levels were increased and high levels correlated with slower disease progression, prolonged survival, and increased body mass index. In NSC-34 motor neurons and C2C12 muscle cells expressing SOD1G93A or exposed to oxidative stress, ectopic FGF21 mitigated loss of cell viability. In summary, FGF21 is a novel biomarker in ALS that correlates with slower disease progression and exerts trophic effects under conditions of cellular stress.

2.
Cancer ; 2024 Aug 18.
Artigo em Inglês | MEDLINE | ID: mdl-39154228

RESUMO

INTRODUCTION: Continuity and coordination-of-care for childhood cancer survivors with multiple chronic conditions are understudied but critical for appropriate follow-up care. METHODS: From April through June 2022, 800 Childhood Cancer Survivor Study participants with two or more chronic conditions (one or more severe/life-threatening/disabling) were emailed the "Patient Perceived Continuity-of-Care from Multiple Clinicians" survey. The survey asked about survivors' main (takes care of most health care) and coordinating (ensures follow-up) provider, produced three care-coordination summary scores (main provider, across multiple providers, patient-provider partnership), and included six discontinuity indicators (e.g., having to organize own care). Discontinuity (yes/no) was defined as poor care on one or more discontinuity item. Chi-square tests assessed associations between discontinuity and sociodemographics. Modified Poisson regression models estimated prevalence ratios (PRs) for discontinuity risk associated with the specialty and number of years seeing the main and coordinating provider, and PRs associated with better scores on the three care-coordination summary measures. Inverse probability weights adjusted for survey non-participation. RESULTS: A total of 377 (47%) survivors responded (mean age 48 years, 68% female, 89% non-Hispanic White, 78% privately insured, 74% ≥college graduate); 147/373 (39%) reported discontinuity. Younger survivors were more likely to report discontinuity (chi-square p = .02). Seeing the main provider ≤3 years was associated with more prevalent discontinuity (PR; 95%CI) (1.17; 1.02-1.34 vs ≥ 10 years). Cancer specialist main providers were associated with less prevalent discontinuity (0.81; 0.66-0.99 vs. primary care). Better scores on all three care-coordination summary measures were associated with less prevalent discontinuity: main provider (0.73; 0.64-0.83), across multiple providers (0.81; 0.78-0.83), patient-provider partnership (0.85; 0.80-0.89). CONCLUSIONS: Care discontinuity among childhood cancer survivors is prevalent and requires intervention.

3.
Nat Commun ; 15(1): 6548, 2024 Aug 02.
Artigo em Inglês | MEDLINE | ID: mdl-39095394

RESUMO

Eastern equine encephalitis virus (EEEV) is the most virulent alphavirus that infects humans, and many survivors develop neurological sequelae, including paralysis and intellectual disability. Alphavirus spike proteins comprise trimers of heterodimers of glycoproteins E2 and E1 that mediate binding to cellular receptors and fusion of virus and host cell membranes during entry. We recently identified very-low density lipoprotein receptor (VLDLR) and apolipoprotein E receptor 2 (ApoER2) as cellular receptors for EEEV and a distantly related alphavirus, Semliki Forest virus (SFV). Here, we use single-particle cryo-electron microscopy (cryo-EM) to determine structures of the EEEV and SFV spike glycoproteins bound to the VLDLR ligand-binding domain and found that EEEV and SFV interact with the same cellular receptor through divergent binding modes. Our studies suggest that the ability of LDLR-related proteins to interact with viral spike proteins through very small footprints with flexible binding modes results in a low evolutionary barrier to the acquisition of LDLR-related proteins as cellular receptors for diverse sets of viruses.


Assuntos
Microscopia Crioeletrônica , Vírus da Encefalite Equina do Leste , Receptores de LDL , Receptores de LDL/metabolismo , Receptores de LDL/química , Vírus da Encefalite Equina do Leste/metabolismo , Vírus da Encefalite Equina do Leste/ultraestrutura , Humanos , Animais , Vírus da Floresta de Semliki/metabolismo , Ligação Proteica , Receptores Virais/metabolismo , Receptores Virais/química , Proteínas do Envelope Viral/metabolismo , Proteínas do Envelope Viral/química , Proteínas do Envelope Viral/ultraestrutura , Modelos Moleculares
4.
Am J Case Rep ; 25: e943882, 2024 Aug 11.
Artigo em Inglês | MEDLINE | ID: mdl-39127886

RESUMO

BACKGROUND Hereditary breast cancer arising in BRCA1-deficient patients is commonly diagnosed as invasive carcinoma of no special type (NST) with medullary features, while invasive lobular carcinoma (ILC) appears to be significantly under-represented in BRCA1 mutation carriers. We report a case of pleomorphic ILC arising in a 28-year-old woman harboring a germline BRCA1 c.3756_3759delGTCT p.(Ser1253Argfs*10) pathogenic variant. CASE REPORT A nulliparous 28-year-old woman with a family history of BRCA1 mutation presented to the symptomatic breast clinic with a several-week history of a left 80-mm breast lump. Core biopsy established a diagnosis of a poorly differentiated triple-negative breast cancer (TNBC) of pleomorphic lobular phenotype. Her clinical diagnosis was cT3, N0, M0, cStageIIB. The MDT recommended CT staging, MRI breast imaging and neoadjuvant chemotherapy (NACT). PET CT imaging showed no evidence of distant metastatic disease. The patient had a good radiological response to NACT with a FEC-T carboplatin regimen. Post-NACT imaging showed a residual cystic mass and the patient underwent a mastectomy and sentinel lymph node biopsy with plans for a delayed latissimus dorsi reconstruction following her adjuvant radiotherapy treatment. A complete pathological response was subsequently demonstrated without any evidence of metastatic disease. CONCLUSIONS This case is the first report of pleomorphic ILC with a triple-negative receptor status and a complete pathological response in a BRCA1 mutation carrier. Our study expands the heterogeneous spectrum of TNBC and contributes to a better understanding of the molecular genetic landscape that characterizes invasive pleomorphic lobular neoplasia.


Assuntos
Carcinoma Lobular , Neoplasias de Mama Triplo Negativas , Humanos , Feminino , Neoplasias de Mama Triplo Negativas/genética , Neoplasias de Mama Triplo Negativas/patologia , Neoplasias de Mama Triplo Negativas/terapia , Adulto , Carcinoma Lobular/genética , Carcinoma Lobular/patologia , Carcinoma Lobular/terapia , Proteína BRCA1/genética , Mutação em Linhagem Germinativa
5.
Nat Genet ; 56(9): 1832-1840, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39192095

RESUMO

Telomeres protect chromosome ends from damage and their length is linked with human disease and aging. We developed a joint telomere length metric, combining quantitative PCR and whole-genome sequencing measurements from 462,666 UK Biobank participants. This metric increased SNP heritability, suggesting that it better captures genetic regulation of telomere length. Exome-wide rare-variant and gene-level collapsing association studies identified 64 variants and 30 genes significantly associated with telomere length, including allelic series in ACD and RTEL1. Notably, 16% of these genes are known drivers of clonal hematopoiesis-an age-related somatic mosaicism associated with myeloid cancers and several nonmalignant diseases. Somatic variant analyses revealed gene-specific associations with telomere length, including lengthened telomeres in individuals with large SRSF2-mutant clones, compared with shortened telomeres in individuals with clonal expansions driven by other genes. Collectively, our findings demonstrate the impact of rare variants on telomere length, with larger effects observed among genes also associated with clonal hematopoiesis.


Assuntos
Bancos de Espécimes Biológicos , Polimorfismo de Nucleotídeo Único , Telômero , Sequenciamento Completo do Genoma , Humanos , Telômero/genética , Reino Unido , Sequenciamento Completo do Genoma/métodos , Homeostase do Telômero/genética , Masculino , Feminino , Hematopoiese Clonal/genética , Estudo de Associação Genômica Ampla/métodos , Idoso , DNA Helicases/genética , Pessoa de Meia-Idade , Biobanco do Reino Unido
6.
Lung Cancer ; 195: 107928, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39197359

RESUMO

PURPOSE: The mesothelin-targeting antibody-drug conjugate anetumab ravtansine was evaluated in combination with the programmed cell death-1 (PD-1) inhibitor pembrolizumab based on the common expression of mesothelin and reports of activity in mesothelioma. PATIENTS AND METHODS: A phase 1 safety run-in of the combination of anetumab ravtansine (6.5 mg/kg iv q3weeks) and pembrolizumab (200 mg, IV q3weeks) was conducted, followed by a phase 2 randomization to the combination or pembrolizumab alone at medical centers across the United States and Canada in the National Cancer Institute's Experimental Therapeutics Clinical Trials Network. Patients with pleural mesothelioma that expressed mesothelin and had previously received platinum-based therapy were eligible. RESULTS: In phase 1 (n = 12) only one dose limiting toxicity was observed and the rules for dose reduction were not met. In phase 2, there was no difference in the confirmed response rates between the combination group (n = 18, 2 partial responses [PR], 11 %) and the pembrolizumab group (n = 17, 1 PR, 6 %; z = -0.5523, p = 0.29116). The median PFS was 12.2 months (95 % CI 5.1-not evaluable [NE]) for the combination, and 3.9 months for pembrolizumab (95 % CI 2.1-NE)(HR=0.55, p = 0.20). Patients with high baseline levels of soluble mesothelin who received anetumab ravtansine had a median PFS of 5 months. CONCLUSIONS: The numeric difference in PFS between treatment groups was not statistically significant, likely related to a smaller than planned sample size. High levels of soluble mesothelin should potentially be considered to select against the use of mesothelin-targeting therapies in development that are neutralized by soluble mesothelin.


Assuntos
Anticorpos Monoclonais Humanizados , Anticorpos Monoclonais , Protocolos de Quimioterapia Combinada Antineoplásica , Mesotelioma , Humanos , Anticorpos Monoclonais Humanizados/uso terapêutico , Anticorpos Monoclonais Humanizados/efeitos adversos , Anticorpos Monoclonais Humanizados/administração & dosagem , Feminino , Idoso , Masculino , Pessoa de Meia-Idade , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Anticorpos Monoclonais/uso terapêutico , Anticorpos Monoclonais/efeitos adversos , Mesotelioma/tratamento farmacológico , Mesotelioma/mortalidade , Mesotelioma/patologia , Mesotelina , Maitansina/análogos & derivados , Maitansina/uso terapêutico , Maitansina/efeitos adversos , Idoso de 80 Anos ou mais , Neoplasias Pleurais/tratamento farmacológico , Neoplasias Pleurais/patologia , Neoplasias Pleurais/mortalidade , Proteínas Ligadas por GPI/metabolismo , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/patologia , Neoplasias Pulmonares/mortalidade , Imunoconjugados
8.
Pilot Feasibility Stud ; 10(1): 62, 2024 Apr 11.
Artigo em Inglês | MEDLINE | ID: mdl-38605397

RESUMO

BACKGROUND: Health advances due to developments in genomic medicine are unequally experienced in the USA; racial differences in the uptake of genetic testing are one factor in this disparity. In collaboration with Black patients and diverse health care providers, we are developing a patient-centered video intervention to increase cancer genetic testing among eligible Black Americans. The objective of the pilot work is to explore the acceptability of and support for the intervention and key content components. METHODS: In order to create a patient-centered video intervention prototype, we conducted a targeted, secondary analysis of 47 coded transcripts from video-taped qualitative interviews with people with a known genetic or inherited cancer risk. The review focused on decision-making, testing experiences, and perceived value of genetic testing. We subsequently generated a 15-min video montage of content from 9 diverse (age, gender, race) participants. We used the prototype video as prompt material for semi-structured interviews with 10 Black patients who had undergone genetic testing in the last 2 years and 10 racially diverse providers (genetic counselors, a nurse, and medical oncologists) who provide management recommendations for high-risk patients. Interviews sought to understand the acceptability of a video intervention to enhance informed decision-making by Black patients and key elements for intervention efficacy. RESULTS: Study participants were generally positive about the prototype video and provided guidance for intervention development. Interviewed patients prioritized perceived authenticity and relatability of video participants. The presentation of patients' perspectives on testing, their experiences of testing, and the benefits of having test results were all seen as useful. The benefits of testing for self and family were identified as important considerations. Privacy concerns and science skepticism were identified as germane issues, with guidance to present barriers to testing alongside possible solutions. The inclusion of clinicians was seen as potentially useful but with caution that clinicians are not universally trusted. CONCLUSIONS: Study findings provided critical input for the creation of a professionally produced, tailored intervention video for a randomized clinical trial with Black Americans to evaluate the influence on uptake of genetic testing. The interviews suggest the acceptability and potential utility of an authentic, realistic, and tailored, patient-centered video intervention to increase consideration and uptake of genetic testing.

11.
J Breast Imaging ; 6(1): 64-71, 2024 Jan 19.
Artigo em Inglês | MEDLINE | ID: mdl-38153758

RESUMO

Adenomyoepithelioma (AME) is a rare, usually benign breast neoplasm with low potential for malignant transformation. Imaging features are nonspecific and overlap with other benign and malignant breast lesions. On mammography, AME most often presents as a mass, usually oval in shape, with variable reported margins. Less commonly, AME can present mammographically as an asymmetry or can be mammographically occult. Associated calcifications are uncommon. On US, AME is usually seen as a hypoechoic oval mass, but it can also manifest as a complex cystic and solid mass. On US, the majority of AME have noncircumscribed margins (indistinct, angular, or microlobulated). Internal vascularity is usually present, and posterior enhancement can be seen. Although there is limited literature on MRI features, the most frequent finding is an irregular mass with washout kinetics; T2 hyperintensity can be observed. These nonspecific and often suspicious imaging features usually merit biopsy. On histologic analysis, AME is characterized by a biphasic proliferation of myoepithelial and epithelial cells. Pathologic diagnosis can be difficult due to the variety of histologic features of AME and heterogeneity in these tumors, especially when sampling is limited, such as in core needle biopsies. Wide local surgical excision of AME is recommended due to potential for recurrence and malignant transformation.


Assuntos
Adenomioepitelioma , Neoplasias da Mama , Humanos , Feminino , Adenomioepitelioma/diagnóstico por imagem , Mama/patologia , Neoplasias da Mama/diagnóstico por imagem , Mamografia , Biópsia
12.
Front Immunol ; 14: 1279387, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38022659

RESUMO

Introduction: Metastatic uveal melanoma (MUM) has a poor prognosis and treatment options are limited. These patients do not typically experience durable responses to immune checkpoint inhibitors (ICIs). Oncolytic viruses (OV) represent a novel approach to immunotherapy for patients with MUM. Methods: We developed an OV with a Vesicular Stomatitis Virus (VSV) vector modified to express interferon-beta (IFN-ß) and Tyrosinase Related Protein 1 (TYRP1) (VSV-IFNß-TYRP1), and conducted a Phase 1 clinical trial with a 3 + 3 design in patients with MUM. VSV-IFNß-TYRP1 was injected into a liver metastasis, then administered on the same day as a single intravenous (IV) infusion. The primary objective was safety. Efficacy was a secondary objective. Results: 12 patients with previously treated MUM were enrolled. Median follow up was 19.1 months. 4 dose levels (DLs) were evaluated. One patient at DL4 experienced dose limiting toxicities (DLTs), including decreased platelet count (grade 3), increased aspartate aminotransferase (AST), and cytokine release syndrome (CRS). 4 patients had stable disease (SD) and 8 patients had progressive disease (PD). Interferon gamma (IFNγ) ELIspot data showed that more patients developed a T cell response to virus encoded TYRP1 at higher DLs, and a subset of patients also had a response to other melanoma antigens, including gp100, suggesting epitope spreading. 3 of the patients who responded to additional melanoma antigens were next treated with ICIs, and 2 of these patients experienced durable responses. Discussion: Our study found that VSV-IFNß -TYRP1 can be safely administered via intratumoral (IT) and IV routes in a previously treated population of patients with MUM. Although there were no clear objective radiographic responses to VSV-IFNß-TYRP1, dose-dependent immunogenicity to TYRP1 and other melanoma antigens was seen.


Assuntos
Terapia Viral Oncolítica , Vírus Oncolíticos , Estomatite Vesicular , Animais , Humanos , Interferon beta/metabolismo , Antígenos Específicos de Melanoma , Monofenol Mono-Oxigenase/metabolismo , Terapia Viral Oncolítica/efeitos adversos , Vírus Oncolíticos/genética , Linfócitos T/metabolismo , Vírus da Estomatite Vesicular Indiana
14.
Radiographics ; 43(11): e230089, 2023 11.
Artigo em Inglês | MEDLINE | ID: mdl-37883303

RESUMO

Infertility is a common diagnosis that prompts many couples and individuals to seek assisted reproductive technology (ART) for assistance with conception. These technologies have become increasingly used in the United States in the past several decades, with 326 468 ART cycles performed in 2020, resulting in 75 023 live births. This ubiquity of ART also increases the likelihood that radiologists will encounter both normal and abnormal imaging findings associated with these treatments. Thus, radiologists of all subspecialties should be familiar with the multimodality appearance of the ovaries and pelvis in patients undergoing ART treatments. Furthermore, it is imperative that radiologists understand the appearance expected during different stages of the ART process. During stimulated ovulatory cycles, it is normal and expected for the ovaries to appear enlarged and to contain numerous cystic follicles, often with a small to moderate volume of pelvic free fluid. After oocyte retrieval, hemorrhagic ovarian follicles and a small to moderate volume of blood products in the cul-de-sac can be expected to be seen. Multiple nonemergency and emergency complications are related to ART, many of which can be seen at imaging. The most encountered emergency complications of ART include ovarian hyperstimulation syndrome, ectopic pregnancy, heterotopic pregnancy, multiple gestations, ovarian torsion, and procedural complications related to oocyte retrieval. These complications have important clinical implications, thus necessitating accurate and timely detection by the radiologist and the clinical team. ©RSNA, 2023 Supplemental material is available for this article. Quiz questions for this article are available through the Online Learning Center.


Assuntos
Síndrome de Hiperestimulação Ovariana , Gravidez Ectópica , Feminino , Humanos , Gravidez , Imagem Multimodal , Síndrome de Hiperestimulação Ovariana/diagnóstico , Síndrome de Hiperestimulação Ovariana/etiologia , Gravidez Múltipla , Técnicas de Reprodução Assistida/efeitos adversos
15.
Tob Induc Dis ; 21: 98, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37502348

RESUMO

INTRODUCTION: Tobacco industry documents reveal companies' knowledge of a similar young adult market across countries in terms of attitudes and lifestyle aspirations. Some tobacco companies, therefore, use similar marketing approaches across different jurisdictions. We examined young adults' perceptions of flavored cigarette packs, including those containing flavor capsules, in Mexico and the Philippines. METHODS: We conducted a secondary analysis of five focus groups held in Mexico and four in the Philippines with young adults who smoke (aged 18-24 years), separated by gender, in which participants interacted with cigarette packs purchased locally. Transcribed and translated data were thematically analyzed and compared between countries. RESULTS: Three major themes were identified: 1) Flavor capsules cigarettes are recognizable via pack design through imagery on the pack that is understood to signify capsules; 2) Colors signal flavor and make the pack attractive; and 3) Young adults who smoke identify the target audience for these products as young people and those who are beginning to smoke. CONCLUSIONS: Young adults who smoke in Mexico and the Philippines interpreted flavored cigarette pack design similarly and thought that young people are the main audience for these products. This suggests a successful marketing approach creating shared perceptions of flavored cigarette packs in different world regions. It is likely that similar tactics are used in other countries around the world. Therefore, jurisdictions might use evidence from other jurisdictions to support the implementation of evidence-based tobacco control policies. These findings also support the implementation of plain and standardized packaging and flavor bans that would also limit product innovation such as capsules.

17.
BMJ Open ; 13(6): e071080, 2023 06 13.
Artigo em Inglês | MEDLINE | ID: mdl-37311632

RESUMO

INTRODUCTION: Patient education is a critical component of healthcare delivery. However, medical information and knowledge are complex and can be difficult for patients and families to comprehend when delivered verbally. The use of virtual reality (VR) to convey medical information to patients may bridge this communication gap and lead to more effective patient education. It may be of increased value to those with low health literacy and levels of patient activation, in rural and regional settings. The objective of this randomised, single-centre pilot study is to examine the feasibility and preliminary effectiveness of VR as an education tool for people with cancer. The results will provide data to inform the feasibility of a future randomised controlled trial, including sample size calculations. METHODS AND ANALYSIS: Patients with cancer undergoing immunotherapy will be recruited. A total of 36 patients will be recruited and randomised to one of three trial arms. Participants will be randomised 1:1:1 to receive VR, a two-dimensional video or standard care (ie, verbal communication and information leaflets). Feasibility will be assessed by recruitment rate, practicality, acceptability, usability and related adverse events. The potential impact of VR on patient-reported outcomes (ie, perceived information provision quality, knowledge about immunotherapy and patient activation) will be assessed and stratified by information coping style (ie, monitors vs blunters) whenever statistical analyses are significant. The patient-reported outcomes will be measured at baseline, post-intervention and 2 weeks post-intervention. In addition, semistructured interviews will be conducted with health professionals and participants randomised to the VR trial arm, to further explore acceptability and feasibility. ETHICS AND DISSEMINATION: Ethics approval was obtained from the Greater Western Human Research Ethics Committee, New South Wales Local Health District (2022/ETH01760). Informed consent will be obtained from all participants. Findings will be disseminated via relevant conference presentations and publications in peer-reviewed journals. TRIAL REGISTRATION NUMBER: ACTRN12622001473752.


Assuntos
Neoplasias , Educação de Pacientes como Assunto , Humanos , Estudos de Viabilidade , Projetos Piloto , Neoplasias/terapia , Imunoterapia , Ensaios Clínicos Controlados Aleatórios como Assunto
18.
Tob Control ; 2023 Jun 28.
Artigo em Inglês | MEDLINE | ID: mdl-37380350

RESUMO

OBJECTIVES: Pack inserts and onserts-removable items placed inside or on the outside of packs-are a communicative strategy used by tobacco companies that provide them with additional marketing space. A content analysis of these items was conducted across several years, countries and brands to assess how these items are used to communicate with consumers. METHODS: Between 2013 and 2020, cigarette packs were systematically collected using the Tobacco Pack Surveillance System protocol. Packs with inserts or onserts (n=178) were identified from 11 low and middle-income countries. Packs were coded for tobacco company strategies, physical pack characteristics and imagery and lexical marketing appeals. RESULTS: Of the 5903 packs, 3% (n=178) had an insert or onsert. 171 of these (96%) were inserts. While most (78%) pack exteriors were entirely in English, over half (51%) of the inserts/onserts were entirely in the local (non-English) language from where the pack was collected. The most common appeals on the inserts/onserts were product dependability (64%), luxury/aspirational (55%) and machinery/technology (37%). Product images were prevalent as well as images or words mentioning filters (22%). The most used appeals involved featuring aspects of a product (66%), addressing customers directly (52%) and informing customers about new aspects of a product (31%). CONCLUSIONS: Cigarette pack inserts/onserts are unregulated in many countries and provide additional space for tobacco companies to extend and innovate their advertising. Tobacco advertising and packaging policies such as plain and standardised packaging should expand to address inserts/onserts to protect consumers more fully from industry promotion of deadly products.

19.
Nat Commun ; 14(1): 3403, 2023 06 09.
Artigo em Inglês | MEDLINE | ID: mdl-37296101

RESUMO

Squamous cell carcinoma antigen recognized by T cells 3 (SART3) is an RNA-binding protein with numerous biological functions including recycling small nuclear RNAs to the spliceosome. Here, we identify recessive variants in SART3 in nine individuals presenting with intellectual disability, global developmental delay and a subset of brain anomalies, together with gonadal dysgenesis in 46,XY individuals. Knockdown of the Drosophila orthologue of SART3 reveals a conserved role in testicular and neuronal development. Human induced pluripotent stem cells carrying patient variants in SART3 show disruption to multiple signalling pathways, upregulation of spliceosome components and demonstrate aberrant gonadal and neuronal differentiation in vitro. Collectively, these findings suggest that bi-allelic SART3 variants underlie a spliceosomopathy which we tentatively propose be termed INDYGON syndrome (Intellectual disability, Neurodevelopmental defects and Developmental delay with 46,XY GONadal dysgenesis). Our findings will enable additional diagnoses and improved outcomes for individuals born with this condition.


Assuntos
Disgenesia Gonadal , Células-Tronco Pluripotentes Induzidas , Deficiência Intelectual , Masculino , Humanos , Testículo/metabolismo , Células-Tronco Pluripotentes Induzidas/metabolismo , Proteínas de Ligação a RNA/genética , Proteínas de Ligação a RNA/metabolismo , Antígenos de Neoplasias
20.
Curr Opin Obstet Gynecol ; 35(4): 361-367, 2023 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-37144567

RESUMO

PURPOSE OF REVIEW: To evaluate factors contributing to the development of work-related musculoskeletal disorders (WMSDs) and review strategies for mitigating ergonomic strain in minimally invasive gynecologic surgery. RECENT FINDINGS: Factors associated with increased ergonomic strain and the development of WMSDs include increasing patient body mass index (BMI), smaller surgeon hand size, noninclusive design of instruments and energy devices and improper positioning of surgical equipment. Each type of minimally invasive surgery (laparoscopic, robotic, vaginal) confers its own ergonomic risk to the surgeon. Recommendations have been published regarding optimal ergonomic surgeon and equipment positioning. Intraoperative breaks and stretching are effective in reducing surgeon discomfort. Formal training in ergonomics has not yet been widely implemented, but educational interventions have been effective in reducing surgeon discomfort and can improve surgeon recognition of suboptimal ergonomics. SUMMARY: Considering the serious downstream effects of WMSDs on surgeons, it is imperative to implement strategies for WMSD prevention. Optimal positioning of the surgeons and operative equipment should be routine. Intraoperative breaks and stretching should be incorporated during procedures and between every case. Formal education in ergonomics should be provided to surgeons and trainees. Additionally, more inclusive instrument design by industry partners should be prioritized.


Assuntos
Laparoscopia , Robótica , Cirurgiões , Humanos , Feminino , Procedimentos Cirúrgicos em Ginecologia/métodos , Ergonomia , Laparoscopia/métodos , Dor , Procedimentos Cirúrgicos Minimamente Invasivos
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