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1.
Psychol Trauma ; 2024 Mar 07.
Artículo en Inglés | MEDLINE | ID: mdl-38451715

RESUMEN

OBJECTIVE: The current study examined group differences in peritraumatic tonic immobility (TI) and posttraumatic symptoms among lesbian, gay, bisexual, transgender, and queer (LGBTQ+) females and their straight, cisgender counterparts. METHOD: Adult female sexual assault (SA) survivors (N = 86; 41.9% LGBTQ+) completed a questionnaire battery assessing demographics, TI experience, posttraumatic stress disorder symptoms, dissociative symptoms, and posttraumatic cognitions. Chi-square analyses, analyses of variance, and hierarchical linear regressions were used to characterize the associations among these variables. RESULTS: Individuals identifying as LGBTQ+ endorsed higher rates and severity of TI as well as greater posttraumatic stress symptoms compared to their straight, cisgender counterparts. Both LGBTQ+ status and TI experience predicted greater posttraumatic stress symptoms. CONCLUSIONS: Findings suggest that LGBTQ+ individuals who endorse TI during SA experience greater posttraumatic symptoms than their non-LGBTQ+ and non-TI counterparts. These findings have important implications for future research and treatment of female SA survivors. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

2.
Antioxidants (Basel) ; 13(2)2024 Feb 10.
Artículo en Inglés | MEDLINE | ID: mdl-38397822

RESUMEN

Carbon nanodots (CNDs) are a new type of nanomaterial with a size of less than 10 nanometers and excellent biocompatibility, widely used in fields such as biological imaging, transmission, diagnosis, and drug delivery. However, its potential and mechanism to mediate endothelial inflammation have yet to be explored. Here, we report that the uptake of CNDs by EA.hy926 endothelial cells is both time and dose dependent. The concentration of CNDs used in this experiment was found to not affect cell viability. TNF-α is a known biomarker of vascular inflammation. Cells treated with CNDs for 24 h significantly inhibited TNF-α (0.5 ng/mL)-induced expression of intracellular adhesion molecule 1 (ICAM-1) and interleukin 8 (IL-8). ICAM-1 and IL-8 are two key molecules responsible for the activation and the firm adhesion of monocytes to activated endothelial cells for the initiation of atherosclerosis. ROS, such as hydrogen peroxide, play an important role in TNF-α-induced inflammation. Interestingly, we found that CNDs effectively scavenged H2O2 in a dose-dependent manner. CNDs treatment also increased the activity of the antioxidant enzyme NQO1 in EA.hy926 endothelial cells indicating the antioxidant properties of CNDs. These results suggest that the anti-inflammatory effects of CNDs may be due to the direct H2O2 scavenging properties of CNDs and the indirect upregulation of antioxidant enzyme NQO1 activity in endothelial cells. In conclusion, CND can inhibit TNF-α-induced endothelial inflammation, possibly due to its direct scavenging of H2O2 and the indirect upregulation of antioxidant enzyme NQO1 activity in endothelial cells.

3.
Clin Cancer Res ; 29(23): 4844-4852, 2023 12 01.
Artículo en Inglés | MEDLINE | ID: mdl-37747813

RESUMEN

PURPOSE: Chondrosarcomas are the most common primary bone tumor in adults. Isocitrate dehydrogenase 1 (IDH1) and IDH2 mutations are prevalent. We aimed to assess the clinico-genomic properties of IDH mutant versus IDH wild-type (WT) chondrosarcomas as well as alterations in other genes. EXPERIMENTAL DESIGN: We included 93 patients with conventional and dedifferentiated chondrosarcoma for which there were available clinical next-generation sequencing data. Clinical and genomic data were extracted and compared between IDH mutant and IDH WT chondrosarcomas and between TP53 mutant and TP53 WT chondrosarcomas. RESULTS: IDH1 and IDH2 mutations are prevalent in chondrosarcoma (50.5%), more common in chondrosarcomas arising in the extremities, associated with higher age at diagnosis, and more common in dedifferentiated chondrosarcomas compared with grades 1-3 conventional chondrosarcoma. There was no difference in survival based on IDH mutation in univariate and multivariate analyses. TP53 mutation was the next most prevalent (41.9%) and is associated with worse overall survival and metastasis-free survival in both univariate and multivariate analyses. TP53 mutation was also associated with higher risk of recurrence following curative-intent surgery and worse survival among patients that presented with de novo metastatic disease. CONCLUSIONS: IDH mutations are prevalent in chondrosarcoma though were not associated with survival outcomes in this cohort. TP53 mutations were the next most common alteration and were associated with worse outcomes.


Asunto(s)
Neoplasias Óseas , Condrosarcoma , Adulto , Humanos , Mutación , Condrosarcoma/genética , Condrosarcoma/patología , Neoplasias Óseas/genética , Neoplasias Óseas/patología , Huesos/patología , Genómica , Isocitrato Deshidrogenasa/genética , Isocitrato Deshidrogenasa/metabolismo , Proteína p53 Supresora de Tumor/genética
4.
Toxicol Pathol ; 51(5): 264-277, 2023 07.
Artículo en Inglés | MEDLINE | ID: mdl-37702042

RESUMEN

During toxicology studies, fasting animals prior to clinical pathology blood collection is believed to reduce variability in some clinical chemistry analytes. However, fasting adds stress to animals that are already stressed from the administration of potentially toxic doses of the test article. The purpose of this study was to assess the impacts of different fasting durations on cynomolgus monkeys' welfare during toxicology studies. To this end, we assessed the cynomolgus monkeys traditional and ancillary clinical pathology endpoints at different fasting times. We showed that most clinical pathology endpoints were largely comparable between different fasting times suggesting that cynomolgus monkeys could be fasted for as little as 4 hours for toxicology studies, as longer fasting times (up to 20 hours) resulted in stress, dehydration, and significant decreases in blood glucose- changes that impacts animal welfare. Shorter fasting times were associated with higher triglycerides variability among individual animals. Therefore, we propose that shorter fasting time (i.e., 4 hours) should be adequate for most toxicology studies except when: (1) parameters that could be affected by non-fasting conditions are important for safety and pharmacodynamic assessments (i.e., glucose and lipids) and (2) fasting would be needed for the bioavailability of an orally administered test article.


Asunto(s)
Bienestar del Animal , Ayuno , Animales , Macaca fascicularis
5.
NPJ Precis Oncol ; 7(1): 67, 2023 Jul 15.
Artículo en Inglés | MEDLINE | ID: mdl-37454202

RESUMEN

Genomically-informed therapy requires consideration of the functional impact of genomic alterations on protein expression and/or function. However, a substantial number of variants are of unknown significance (VUS). The MD Anderson Precision Oncology Decision Support (PODS) team developed an actionability classification scheme that categorizes VUS as either "Unknown" or "Potentially" actionable based on their location within functional domains and/or proximity to known oncogenic variants. We then compared PODS VUS actionability classification with results from a functional genomics platform consisting of mutant generation and cell viability assays. 106 (24%) of 438 VUS in 20 actionable genes were classified as oncogenic in functional assays. Variants categorized by PODS as Potentially actionable (N = 204) were more likely to be oncogenic than those categorized as Unknown (N = 230) (37% vs 13%, p = 4.08e-09). Our results demonstrate that rule-based actionability classification of VUS can identify patients more likely to have actionable variants for consideration with genomically-matched therapy.

6.
Cancer ; 129(11): 1672-1680, 2023 06 01.
Artículo en Inglés | MEDLINE | ID: mdl-36930815

RESUMEN

BACKGROUND: Tumor-based next-generation sequencing is used inconsistently as a tool to tailor treatment of ovarian cancer, yet beyond detection of somatic BRCA1 and BRCA2 mutations, the clinical benefit is not well established. This study aimed to assess the clinical relevance of tumor-based next-generation sequencing (tbNGS) in patients with ovarian cancer. METHODS: This retrospective study included patients with high-grade epithelial ovarian carcinoma. tbNGS results were identified in the electronic medical record using optical character recognition and natural language processing. Genetic, clinical, and demographic information was collected. Progression-free survival (PFS) and overall survival were calculated and compared using log-rank tests. Multivariate Cox regression and clustering analyses were used to identify patterns of genetic alterations associated with survival. RESULTS: Of 1092 patients in the described population, 409 (37.5%) had tbNGS results. Nearly all (96.1% [393/409]) had one or more genetic alterations. In 25.9% (106/409) of patients, an alteration that aligned with a targeted treatment was identified, and in an additional 48.7% (199/409), tbNGS results suggested eligibility for an investigational agent or clinical trial. The most frequent alterations were TP53, PIK3CA, and NF1 mutations, and CCNE1 amplification. Together, BRCA1 and BRCA2 mutations were associated with longer PFS (hazard ratio [HR], 0.62; 95% confidence interval [CI], 0.42-0.92; p = .02), whereas AKT2 amplification was associated with shorter PFS (HR, 3.86; 95% CI, 1.002-14.88; p < .05). Multivariate Cox regression and clustering analyses identified several combinations of genetic alterations that corresponded to outcomes in patients with high-grade serous carcinoma. CONCLUSIONS: tbNGS often yields clinically relevant information. Detailed analysis of population-level tumor genomics may help to identify therapeutic targets and guide development of clinical decision support tools. PLAIN LANGUAGE SUMMARY: Although more and more patients with ovarian cancer are undergoing tumor-based next-generation sequencing to identify genetic mutations in their tumors, the benefits of such testing are not well established. In a group of over 400 patients with ovarian cancer who underwent tumor-based next-generation sequencing in the course of their treatment, nearly all patients had one or more genetic alterations detected, and one out of four patients had a mutation that qualified them for a personalized treatment option.


Asunto(s)
Neoplasias Ováricas , Humanos , Femenino , Carcinoma Epitelial de Ovario/genética , Estudios Retrospectivos , Neoplasias Ováricas/patología , Mutación , Secuenciación de Nucleótidos de Alto Rendimiento
7.
Eur Urol Oncol ; 6(2): 228-232, 2023 04.
Artículo en Inglés | MEDLINE | ID: mdl-34789422

RESUMEN

Deficiency of MTAP (MTAPdef) mainly occurs because of homozygous loss of chromosome 9p21, which is the most common copy-number loss in metastatic urothelial cancer (mUC). We characterized the clinical and genomic features of MTAPdef mUC in 193 patients treated at MD Anderson Cancer Center (MDACC) and 298 patients from the phase 2 IMvigor210 trial, which investigated atezolizumab in cisplatin-ineligible and platinum-refractory disease. In the MDACC cohort, visceral metastases were significantly more common for MTAPdef (n = 48) than for MTAP-proficient (MTAPprof; n = 145) patients (75% vs 55.2%; p = 0.02). MTAPdef was associated with poor prognosis (median overall survival [mOS] 12.3 vs 20.2 mo; p = 0.007) with an adjusted hazard ratio of 1.93 (95% confidence interval 1.35-2.98). Similarly, IMvigor210 patients with MTAPlo (n = 29) had a higher incidence of visceral metastases than those with MTAPhi tumors (n = 269; 86.2% vs 72.5%; p = 0.021) and worse prognosis (mOS 8.0 vs 11.3 mo; p = 0.042). Hyperplasia-associated genes were more frequently mutated in MTAPdef tumors (FGFR3: 31% vs 8%; PI3KCA: 31% vs 19%), while alterations in dysplasia-associated genes were less common in MTAPdef tumors (TP53: 41% vs 67%; RB1: 0% vs 16%). Our findings support a distinct biology in MTAPdef mUC that is associated with early visceral disease and worse prognosis. PATIENT SUMMARY: We investigated the outcomes for patients with the most common gene loss (MTAP gene) in metastatic cancer of the urinary tract. We found that this loss correlates with worse prognosis and a higher risk of metastasis in internal organs. There seems to be distinct tumor biology for urinary tract cancer with MTAP gene loss and this could be a potential target for treatment.


Asunto(s)
Carcinoma de Células Transicionales , Humanos , Pronóstico , Carcinoma de Células Transicionales/tratamiento farmacológico , Genómica , Cisplatino/uso terapéutico , Modelos de Riesgos Proporcionales
8.
JAMA Netw Open ; 5(10): e2236357, 2022 10 03.
Artículo en Inglés | MEDLINE | ID: mdl-36239938

RESUMEN

Importance: The potential relationship between obesity and colorectal cancer (CRC) outcome is poorly understood in patients with late-stage disease. Increased body mass index may negate aspirin use for cancer prevention, but its role as a factor on the effectiveness of postdiagnosis aspirin use is unclear. Objective: To evaluate how prediagnosis obesity and postdiagnosis aspirin use may be associated with overall survival in patients with late-stage colorectal cancer. Design, Setting, and Participants: This cross-sectional study used self-reported data from patients with metastatic or treatment-refractory disease who consented to a clinical protocol at MD Anderson Cancer Center, a large US cancer treatment center. Patients were enrolled between 2010 and 2018 and followed up for mortality through July 2020. Analyses were conducted through March 2022. Exposures: Body mass index in the decade prior to initial diagnosis and regular aspirin use at survey completion. Main Outcomes and Measures: Overall survival was measured from stage IV diagnosis until death or last follow-up. Cox proportional hazards models were constructed to estimate associations of prediagnosis obesity and postdiagnosis aspirin use with overall survival. Results: Of 656 patients included in this analysis, 280 (42.7%) were women, 135 (20.6%) were diagnosed with CRC before age 45 years, 414 (63.1%) were diagnosed between ages 45 and 65 years, and 107 (16.3%) were diagnosed at 65 years or older; 105 patients (16.0%) were Black or Hispanic, and 501 (76.4%) were non-Hispanic White. Controlling for age, sex, race, stage at initial diagnosis, and weight change between prediagnosis and survey date, patients with obesity in the decade prior to CRC diagnosis had significantly higher likelihood of death (hazard ratio, 1.45; 95% CI, 1.11-1.91) compared with those with normal prediagnosis body mass index. Furthermore, only patients with normal prediagnosis body mass index experienced significant survival benefit with postdiagnosis aspirin use (hazard ratio, 0.59; 95% CI, 0.39-0.90). Conclusions and Relevance: In this cross-sectional study, our findings suggest potentially differential tumor development in the long-term physiologic host environment of obesity. Confirmation and further evaluation are needed to determine whether prediagnosis body mass index may be used to estimate the benefit from postdiagnosis aspirin use.


Asunto(s)
Aspirina , Neoplasias Colorrectales , Anciano , Aspirina/uso terapéutico , Índice de Masa Corporal , Estudios Transversales , Femenino , Humanos , Masculino , Persona de Mediana Edad , Obesidad/complicaciones , Obesidad/tratamiento farmacológico , Obesidad/epidemiología
9.
Sci Rep ; 12(1): 15781, 2022 09 22.
Artículo en Inglés | MEDLINE | ID: mdl-36138107

RESUMEN

The current study utilized eye-tracking to investigate the effects of intersensory redundancy and language on infant visual attention and detection of a change in prosody in audiovisual speech. Twelve-month-old monolingual English-learning infants viewed either synchronous (redundant) or asynchronous (non-redundant) presentations of a woman speaking in native or non-native speech. Halfway through each trial, the speaker changed prosody from infant-directed speech (IDS) to adult-directed speech (ADS) or vice versa. Infants focused more on the mouth of the speaker on IDS trials compared to ADS trials regardless of language or intersensory redundancy. Additionally, infants demonstrated greater detection of prosody changes from IDS speech to ADS speech in native speech. Planned comparisons indicated that infants detected prosody changes across a broader range of conditions during redundant stimulus presentations. These findings shed light on the influence of language and prosody on infant attention and highlight the complexity of audiovisual speech processing in infancy.


Asunto(s)
Percepción del Habla , Habla , Cara , Femenino , Humanos , Lactante , Lenguaje , Aprendizaje
10.
Sci Adv ; 8(6): eabm2382, 2022 02 11.
Artículo en Inglés | MEDLINE | ID: mdl-35138907

RESUMEN

Fusion genes represent a class of attractive therapeutic targets. Thousands of fusion genes have been identified in patients with cancer, but the functional consequences and therapeutic implications of most of these remain largely unknown. Here, we develop a functional genomic approach that consists of efficient fusion reconstruction and sensitive cell viability and drug response assays. Applying this approach, we characterize ~100 fusion genes detected in patient samples of The Cancer Genome Atlas, revealing a notable fraction of low-frequency fusions with activating effects on tumor growth. Focusing on those in the RTK-RAS pathway, we identify a number of activating fusions that can markedly affect sensitivity to relevant drugs. Last, we propose an integrated, level-of-evidence classification system to prioritize gene fusions systematically. Our study reiterates the urgent clinical need to incorporate similar functional genomic approaches to characterize gene fusions, thereby maximizing the utility of gene fusions for precision oncology.


Asunto(s)
Neoplasias , Fusión Génica , Genoma , Genómica , Humanos , Neoplasias/genética , Medicina de Precisión
11.
JCO Precis Oncol ; 6: e2100267, 2022 02.
Artículo en Inglés | MEDLINE | ID: mdl-35108036

RESUMEN

PURPOSE: DNA polymerase epsilon is critical to DNA proofreading and replication. Mutations in POLE have been associated with hypermutated tumors and antitumor response to immune checkpoint inhibitor (ICI) therapy. We present a clinicopathologic analysis of patients with advanced cancers harboring POLE mutations, the pattern of co-occurring mutations, and their response to ICI therapy within the context of mutation pathogenicity. METHODS: We conducted a retrospective analysis of next-generation sequencing data at MD Anderson Cancer Center to identify patient tumors with POLE mutations and their co-occurring mutations. The pathogenicity of each mutation was annotated using InterVar and ClinVar. Differences in therapeutic response to ICI, survival, and co-occurring mutations were reported by POLE pathogenicity status. RESULTS: Four hundred fifty-eight patient tumors with POLE mutations were identified from 14,229 next-generation sequencing reports; 15.0% of POLE mutations were pathogenic, 15.9% benign, and 69.1% variant of unknown significance. Eighty-two patients received either programmed death 1 or programmed death ligand-1 inhibitors as monotherapy or in combination with cytotoxic T-cell lymphocyte-4 inhibitors. Patients with pathogenic POLE mutations had improved clinical benefit rate (82.4% v 30.0%; P = .013), median progression-free survival (15.1 v 2.2 months; P < .001), overall survival (29.5 v 6.8 months; P < .001), and longer treatment duration (median 15.5 v 2.5 months; P < .001) compared to those with benign variants. Progression-free survival and overall survival remained superior when adjusting for number of co-occurring mutations (≥ 10 v < 10) and/or microsatellite instability status (proficient mismatch repair v deficient mismatch repair). The number of comutations was not associated with response to ICI (clinical benefit v progressive disease: median 13 v 11 comutations; P = .18). CONCLUSION: Pathogenic POLE mutations were associated with clinical benefit to ICI therapy. Further studies are warranted to validate POLE mutation as a predictive biomarker of ICI therapy.


Asunto(s)
ADN Polimerasa II/genética , Inhibidores de Puntos de Control Inmunológico , Neoplasias , Proteínas de Unión a Poli-ADP-Ribosa/genética , Biomarcadores , Humanos , Inhibidores de Puntos de Control Inmunológico/farmacología , Mutación , Neoplasias/tratamiento farmacológico , Estudios Retrospectivos
12.
Cancers (Basel) ; 13(19)2021 Sep 30.
Artículo en Inglés | MEDLINE | ID: mdl-34638434

RESUMEN

BRAF-activating mutations are the most frequent driver mutations in papillary thyroid cancer (PTC). Targeted inhibitors such as dabrafenib have been used in advanced BRAF-mutated PTC; however, acquired resistance to the drug is common and little is known about other effectors that may play integral roles in this resistance. In addition, the induction of PTC dedifferentiation into highly aggressive KRAS-driven anaplastic thyroid cancer (ATC) has been reported. We detected a novel RAC1 (P34R) mutation acquired during dabrafenib treatment in a progressive metastatic lesion with ATC phenotype. To identify a potential functional link between this novel mutation and tumor dedifferentiation, we developed a cell line derived from the metastatic lesion and compared its behavior to isogenic cell lines and primary tumor samples. Our data demonstrated that RAC1 mutations induce changes in cell morphology, reorganization of F-actin almost exclusively at the cell cortex, and changes in cell adhesion properties. We also established that RAC1 amplification, with or without mutation, is sufficient to drive cell proliferation and resistance to BRAF inhibition. Further, we identified polyploidy of chromosome 7, which harbors RAC1, in both the metastatic lesion and its derived cell line. Copy number amplification and overexpression of other genes located on this chromosome, such as TWIST1, EGFR, and MET were also detected, which might also lead to dabrafenib resistance. Our study suggests that polyploidy leading to increased expression of specific genes, particularly those located on chromosome 7, should be considered when analyzing aggressive thyroid tumor samples and in further treatments.

15.
Cancer Discov ; 11(8): 2014-2031, 2021 08.
Artículo en Inglés | MEDLINE | ID: mdl-33727309

RESUMEN

Immunotherapies targeting aspects of T cell functionality are efficacious in many solid tumors, but pancreatic ductal adenocarcinoma (PDAC) remains refractory to these treatments. Deeper understanding of the PDAC immune ecosystem is needed to identify additional therapeutic targets and predictive biomarkers for therapeutic response and resistance monitoring. To address these needs, we quantitatively evaluated leukocyte contexture in 135 human PDACs at single-cell resolution by profiling density and spatial distribution of myeloid and lymphoid cells within histopathologically defined regions of surgical resections from treatment-naive and presurgically (neoadjuvant)-treated patients and biopsy specimens from metastatic PDAC. Resultant data establish an immune atlas of PDAC heterogeneity, identify leukocyte features correlating with clinical outcomes, and, through an in silico study, provide guidance for use of PDAC tissue microarrays to optimally measure intratumoral immune heterogeneity. Atlas data have direct applicability as a reference for evaluating immune responses to investigational neoadjuvant PDAC therapeutics where pretherapy baseline specimens are not available. SIGNIFICANCE: We provide a phenotypic and spatial immune atlas of human PDAC identifying leukocyte composition at steady state and following standard neoadjuvant therapies. These data have broad utility as a resource that can inform on leukocyte responses to emerging therapies where baseline tissues were not acquired.This article is highlighted in the In This Issue feature, p. 1861.


Asunto(s)
Carcinoma Ductal Pancreático/terapia , Leucocitos/patología , Neoplasias Pancreáticas/terapia , Microambiente Tumoral , Carcinoma Ductal Pancreático/patología , Humanos , Inmunoterapia , Neoplasias Pancreáticas/patología
16.
Transplantation ; 105(7): 1516-1529, 2021 07 01.
Artículo en Inglés | MEDLINE | ID: mdl-33273321

RESUMEN

BACKGROUND: Transplant glomerulopathy (TG) is a pathological feature of chronic active antibody-mediated rejection (cAMR) and is associated with renal allograft failure. The specific role of B cells in the pathogenesis of TG is unclear. METHODS: We used a minor mismatched rat kidney transplant model with B cell-deficient recipients, generated by clustered regularly interspaced short palindromic repeats/Cas9 technology, to investigate the impact of B-cell depletion on the pathogenesis of TG. We hypothesized that B-cell deficiency would prevent TG in the rat kidney transplant model of cAMR. Treatment groups included syngeneic, allogeneic, sensitized allogeneic, and B cell-deficient allogeneic transplant recipients. RESULTS: B cell-deficient recipients demonstrated reduced TG lesions, decreased microvascular inflammation, reduced allograft infiltrating macrophages, and reduced interferon gamma transcripts within the allograft. Allograft transcript levels of interferon gamma, monocyte chemoattractant protein-1, and interleukin-1ß correlated with numbers of intragraft macrophages. B cell-deficient recipients lacked circulating donor-specific antibodies and had an increased splenic regulatory T-cell population. CONCLUSIONS: In this model of cAMR, B-cell depletion attenuated the development of TG with effects on T cell and innate immunity.


Asunto(s)
Linfocitos B/inmunología , Glomerulonefritis/prevención & control , Rechazo de Injerto/prevención & control , Isoanticuerpos/sangre , Riñón/inmunología , Animales , Linfocitos B/metabolismo , Proliferación Celular , Células Cultivadas , Enfermedad Crónica , Técnicas de Cocultivo , Citocinas/genética , Citocinas/metabolismo , Modelos Animales de Enfermedad , Glomerulonefritis/genética , Glomerulonefritis/inmunología , Glomerulonefritis/metabolismo , Rechazo de Injerto/genética , Rechazo de Injerto/inmunología , Rechazo de Injerto/metabolismo , Inmunidad Celular , Inmunidad Innata , Mediadores de Inflamación/metabolismo , Riñón/metabolismo , Riñón/patología , Activación de Linfocitos , Ratas Endogámicas F344 , Ratas Endogámicas Lew , Ratas Transgénicas , Bazo/inmunología , Bazo/metabolismo , Linfocitos T/inmunología , Linfocitos T/metabolismo
17.
Mil Psychol ; 33(6): 403-408, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-38536270

RESUMEN

Anxiety sensitivity (AS), the degree to which individuals fear bodily sensations associated with anxious arousal, has been implicated in the development and maintenance of posttraumatic stress disorder (PTSD). Despite this well-established link, AS has yet to be examined among women who experience military sexual trauma (MST). This is particularly important as research has shown that rates of AS and PTSD are higher among females compared to males. Thus, the purpose of the current investigation was to examine the association between AS and overall PTSD symptom and cluster severity using a sample of female Veterans with a history of MST. The sample included 50 women Veterans presenting for psychological services to a MST specialty clinic at a large southeastern Veterans Affairs hospital. Results revealed a significant positive association between AS and overall PTSD symptom severity, even after controlling for levels of depression, which appeared to be driven by the relationship between AS and negative alterations in cognitions and mood and arousal and reactivity clusters. These findings provide initial support for the association between AS and PTSD symptoms among female Veterans with a history of MST. Given the malleable nature of AS, future research should examine the extent to which targeting this cognitive-behavioral construct reduces PTSD symptoms among such samples.

18.
Br J Cancer ; 123(8): 1262-1270, 2020 10.
Artículo en Inglés | MEDLINE | ID: mdl-32733093

RESUMEN

BACKGROUND: Appendiceal adenocarcinoma (AA) is an orphan disease with unique clinical attributes but often treated as colorectal cancer (CRC). Understanding key molecular differences between AA and CRC is critical. METHODS: We performed retrospective analyses of AA patients (N = 266) with tumour and/or blood next-generation sequencing (NGS) (2013-2018) with in-depth clinicopathological annotation. Overall survival (OS) was examined. For comparison, CRC cohorts annotated for sidedness, consensus molecular subtypes (CMS) and mutations (N = 3283) were used. RESULTS: Blood-NGS identified less RAS/GNAS mutations compared to tissue-NGS (4.2% vs. 60.9%, P < 0.0001) and showed poor concordance with tissue for well-/moderately differentiated tumours. RAS (56.2%), GNAS (28.1%) and TP53 (26.9%) were most frequent mutations. Well/moderately differentiated tumours harboured more RAS (69.2%/64.0% vs. 40.5%) and GNAS (48.7%/32.0% vs. 10.1%) while moderate/poorly differentiated tumours had more TP53 (26.0%/27.8% vs. 7.7%) mutations. Appendiceal adenocarcinoma (compared to CRC) harboured significantly fewer APC (9.1% vs. 55.4%) and TP53 (26.9% vs. 67.5%) and more GNAS mutations (28.1% vs. 2.0%) (P < 0.0001). Appendiceal adenocarcinoma mutation profile did not resemble either right-sided CRC or any of the four CMS in CRC. High grade, but no mutation, was independently predictive of survival. CONCLUSION: Integrated clinico-molecular profiling of AA identified key molecular drivers distinct from CRC. Appendiceal adenocarcinoma has a predominantly grade-driven biology that trumps mutations.


Asunto(s)
Adenocarcinoma/genética , Neoplasias del Apéndice/genética , Neoplasias Colorrectales/genética , Adenocarcinoma/mortalidad , Adenocarcinoma/patología , Adulto , Anciano , Neoplasias del Apéndice/mortalidad , Neoplasias del Apéndice/patología , Cromograninas/genética , Neoplasias Colorrectales/mortalidad , Neoplasias Colorrectales/patología , Femenino , Subunidades alfa de la Proteína de Unión al GTP Gs/genética , Genes ras , Secuenciación de Nucleótidos de Alto Rendimiento , Humanos , Masculino , Persona de Mediana Edad , Mutación , Clasificación del Tumor , Estudios Retrospectivos , Proteína p53 Supresora de Tumor/genética
19.
Mod Pathol ; 33(12): 2422-2436, 2020 12.
Artículo en Inglés | MEDLINE | ID: mdl-32620919

RESUMEN

Recently, comprehensive genomic analyses have allowed a better molecular characterization of diffuse large B-cell lymphoma (DLBCL), offering novel opportunities in patient risk stratification and management. In the era of precision medicine, this has allowed us to move closer toward a more promising therapeutic outcome in the setting of DLBCL. In this review, we highlight the newly reported heterogeneous mutational landscapes of DLBCL (from two whole-exome sequencing studies, and from a more recent work targeting a 293-gene of a hematologic malignancy-designed panel. Altogether, these studies provide further evidence of the clinical applicability of genomic tests. We also briefly review established biomarkers in DLBCL (e.g., MYC and TP53), and our understanding of the germinal center cell reaction, including its epigenetic regulation, emphasizing some of the key epigenetic modifiers that play a role in lymphomagenesis, with available therapeutic targets. In addition, we present current data regarding the role of immune landscapes in DLBCL (inflamed versus non-inflamed), how the recently defined molecular DLBCL subtypes may affect the cellular composition of the tumor microenvironment and the function of the immune cells, and how this new knowledge may result in promising therapeutic approaches in the near future.


Asunto(s)
Biomarcadores de Tumor/genética , Linfoma de Células B Grandes Difuso/genética , Linfoma de Células B Grandes Difuso/inmunología , Mutación , Microambiente Tumoral/inmunología , Animales , Toma de Decisiones Clínicas , Epigénesis Genética , Regulación Neoplásica de la Expresión Génica , Heterogeneidad Genética , Genómica , Humanos , Inmunoterapia , Linfoma de Células B Grandes Difuso/patología , Linfoma de Células B Grandes Difuso/terapia , Terapia Molecular Dirigida , Medicina de Precisión , Pronóstico
20.
Endocr Relat Cancer ; 27(8): T27-T39, 2020 08.
Artículo en Inglés | MEDLINE | ID: mdl-32580150

RESUMEN

The 16th International Multiple Endocrine Neoplasia Workshop (MEN2019) held in Houston, TX, USA, focused on emerging topics in the pathogenesis and therapy of malignant endocrine tumors associated with MEN syndromes. With MEN-2 syndromes, the most common malignancy is medullary thyroid carcinoma (MTC). In the spirit of the original MEN meeting workshop model, the conference included didactic lectures and interactive working groups of clinicians and researchers focused on the state of science in MTC and ongoing challenges or unmet needs in the understanding of MTC and to develop strategies to address these issues.


Asunto(s)
Carcinoma Neuroendocrino/etiología , Neoplasia Endocrina Múltiple/complicaciones , Neoplasias de la Tiroides/etiología , Carcinoma Neuroendocrino/patología , Humanos , Neoplasias de la Tiroides/patología
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