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1.
Neurol Clin Pract ; 14(5): e200335, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-38919930

RESUMEN

Background and Objectives: In 2016, a randomized controlled trial demonstrated the clinical efficacy of trans-sternal thymectomy for patients with non-thymomatous myasthenia gravis (MG). Whether large-scale changes occurred in clinical practice after this trial is unknown. Methods: We performed a retrospective longitudinal cross-sectional analysis using National Inpatient Sample (NIS) data from 2012 to 2019. Our study included hospitalized adults at least 18 years of age diagnosed with MG without an associated thymoma. We used joinpoint regression to analyze annual trends in thymectomy volume and surgical approach (minimally invasive vs trans-sternal) from 2012 to 2019. Using logistic regression models, we examined patient and hospital-level factors that may have influenced whether thymectomy was performed, such as age, sex, race, insurance payor, hospital size and teaching status, and Elixhauser Comorbidity Index. Sampling weights were applied to account for the complex survey design of NIS. Results: The total number of thymectomy procedures increased by 69.8% per year (95% CI 40.1-105.8) between 2012 and 2019. Trans-sternal thymectomies increased by 62.8% per year (95% CI 35.8-95.2) and minimally invasive thymectomies by 83.7% per year (95% CI 38.1-144.3). Thymectomies were significantly more likely to occur in 2017-2019 compared with 2012-2016 (OR 1.93, 95% CI 1.62-2.31). In a multivariable regression model, several factors decreased the odds of patients with MG having a thymectomy: older age, Black race (OR 0.62, 95% CI 0.49-0.77), female (OR 0.73, 95% CI 0.63-0.86), and higher Elixhauser Comorbidity Index. Patients in medium (OR 1.82, 95% CI 1.30-2.55) or large (OR 2.81, 95% CI 2.07-3.82) size and urban teaching hospitals (OR 6.09, 95% CI 2.65-13.97) were more likely to undergo thymectomy. Discussion: Thymectomy is being performed more frequently for non-thymomatous MG, especially after 2016 after publication of a positive phase III clinical trial. There are several disparities in thymectomy utilization that warrant further attention.

2.
Cureus ; 16(5): e60600, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38894793

RESUMEN

INTRODUCTION: Fine needle aspiration cytology (FNAC) for thyroid nodules has a high diagnostic accuracy, according to several studies worldwide. Patients who experienced preoperative FNAC had more optimal surgical treatment than others who did not perform FNAC. Therefore, achieving an accurate FNAC procedure appears to be an important tool for the proper management of thyroid nodules. We aimed to study the accuracy and challenges of the thyroid FNAC diagnostic tool in the Al-Baha region, Kingdom of Saudi Arabia. METHODS: The study involves 52 patients with thyroid nodules who underwent preoperative FNAC and postoperative histopathology with the same surgery and pathology team at Al-Baha region in 2022-2023. RESULTS AND CONCLUSION: The mean age of the included patients was 47.7 years, with a female predominance. The diagnostic accuracy was 90%, and the main cause of inaccurate diagnosis was processing challenges, where the majority of cases were taken on the palpation-only technique, a few cases were ultrasound-guided, and the only technique used in the laboratory was conventional smears. The applied interrater reliability Cohen kappa coefficient (κ) for the clinical-histopathological agreement was "moderate agreement". We recommend using and evaluating more cytological techniques in addition to the currently used conventional smears in pathology laboratories to enhance the efficacy of the FNAC diagnosis of thyroid lesions.

3.
Front Oncol ; 14: 1321557, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38751811

RESUMEN

Goserelin is an effective anticancer drug, but naturally causes several side effects. Hence the determination of this drug in biological samples, plays a key role in evaluating its effects and side effects. The current studies have concentrated on monitoring Goserelin using an easy and quick DNA biosensor for the first time. In this study, copper(II) oxide nanoparticles were created upon the surface of multiwalled carbon nanotubes (CuO/MWCNTs) as a conducting mediator. The modified pencil graphite electrode (ds-DNA/PA/CuO/MWCNTs/PGE) has been modified with the help of polyaniline (PA), ds-DNA, and CuO/MWCNTs nanocomposite. Additionally, the issue with the bio-electroanalytical guanine oxidation signal in relation to ds-DNA at the surface of PA/CuO/MWCNTs/PGE has been examined to determination Goserelin for the first time. It also, established a strong conductive condition to determination Goserelin in nanomolar concentration. Thus, Goserelin's determining, however, has a 0.21 nM detection limit and a 1.0 nM-110.0 µM linear dynamic range according to differential pulse voltammograms (DPV) of ds-DNA/PA/CuO/MWCNTs/PGE. Furthermore, the molecular docking investigation highlighted that Goserelin is able to bind ds-DNA preferentially and supported the findings of the experiments. The determining of Goserelin in real samples has been effectively accomplished in the last phase using ds-DNA/PA/CuO/MWCNTs/PGE.

4.
Kidney Int ; 106(1): 115-125, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38521406

RESUMEN

Cardiovascular disease, infection, malignancy, and thromboembolism are major causes of morbidity and mortality in kidney transplant recipients (KTR). Prospectively identifying monogenic conditions associated with post-transplant complications may enable personalized management. Therefore, we developed a transplant morbidity panel (355 genes) associated with major post-transplant complications including cardiometabolic disorders, immunodeficiency, malignancy, and thrombophilia. This gene panel was then evaluated using exome sequencing data from 1590 KTR. Additionally, genes associated with monogenic kidney and genitourinary disorders along with American College of Medical Genetics (ACMG) secondary findings v3.2 were annotated. Altogether, diagnostic variants in 37 genes associated with Mendelian kidney and genitourinary disorders were detected in 9.9% (158/1590) of KTR; 25.9% (41/158) had not been clinically diagnosed. Moreover, the transplant morbidity gene panel detected diagnostic variants for 56 monogenic disorders in 9.1% KTRs (144/1590). Cardiovascular disease, malignancy, immunodeficiency, and thrombophilia variants were detected in 5.1% (81), 2.1% (34), 1.8% (29) and 0.2% (3) among 1590 KTRs, respectively. Concordant phenotypes were present in half of these cases. Reviewing implications for transplant care, these genetic findings would have allowed physicians to set specific risk factor targets in 6.3% (9/144), arrange intensive surveillance in 97.2% (140/144), utilize preventive measures in 13.2% (19/144), guide disease-specific therapy in 63.9% (92/144), initiate specialty referral in 90.3% (130/144) and alter immunosuppression in 56.9% (82/144). Thus, beyond diagnostic testing for kidney disorders, sequence annotation identified monogenic disorders associated with common post-transplant complications in 9.1% of KTR, with important clinical implications. Incorporating genetic diagnostics for transplant morbidities would enable personalized management in pre- and post-transplant care.


Asunto(s)
Secuenciación del Exoma , Pruebas Genéticas , Trasplante de Riñón , Humanos , Trasplante de Riñón/efectos adversos , Pruebas Genéticas/métodos , Femenino , Masculino , Adulto , Persona de Mediana Edad , Complicaciones Posoperatorias/genética , Complicaciones Posoperatorias/diagnóstico , Complicaciones Posoperatorias/epidemiología , Complicaciones Posoperatorias/etiología , Receptores de Trasplantes/estadística & datos numéricos , Anciano , Predisposición Genética a la Enfermedad
5.
Asian Pac J Cancer Prev ; 25(3): 977-986, 2024 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-38546080

RESUMEN

OBJECTIVE: The aim of this study was to measure the knowledge about breast cancer and to identify the barriers in screening among Saudi women in the Al-Baha region. To achieve this, a cross-sectional study was conducted, involving 468 women, to assess their understanding of breast cancer and to explore the obstacles they face in accessing breast cancer screening services. METHODS: The cross-sectional study included 468 women from Al Baha, Saudi Arabia, starting from May 17, 2022, to May 17, 2023. Participants were interviewed by well-trained team members of the research, and their responses were subsequently entered into a Google Form. This process aimed to evaluate their awareness, knowledge, and barriers to breast cancer screening. RESULTS: The majority of participants (48.9%) were in the 18-28 age group. The findings reveal a high level of awareness (96.4%) among participants regarding the significance of early breast cancer detection. For the effectiveness of breast cancer treatment, 59% believed there is an effective treatment, while 32.9% were uncertain or did not know. Knowledge about various risk factors for breast cancer varied. Smoking (73.5%), genetic factors (65.6%), and a family history of breast cancer (70.7%) were well-recognized as risk factors. Education and occupation significantly influenced knowledge about breast cancer (p-value of 0.000, and 0.035 respectively). CONCLUSION: this research highlights strong awareness of breast cancer's importance but gaps in knowledge regarding lesser-known factors. Education is crucial, requiring tailored campaigns and healthcare professional engagement.


Asunto(s)
Neoplasias de la Mama , Humanos , Femenino , Neoplasias de la Mama/diagnóstico , Neoplasias de la Mama/epidemiología , Arabia Saudita/epidemiología , Estudios Transversales , Detección Precoz del Cáncer , Conocimientos, Actitudes y Práctica en Salud
6.
Prenat Diagn ; 44(3): 343-351, 2024 03.
Artículo en Inglés | MEDLINE | ID: mdl-38285371

RESUMEN

OBJECTIVE: GREB1L has been linked prenatally to Potter's sequence, as well as less severe anomalies of the kidney, uterus, inner ear, and heart. The full phenotypic spectrum is unknown. The purpose of this study was to characterize known and novel pre- and postnatal phenotypes associated with GREB1L. METHODS: We solicited cases from the Fetal Sequencing Consortium, screened a population-based genomic database, and conducted a comprehensive literature search to identify disease cases associated with GREB1L. We present a detailed phenotypic spectrum and molecular changes. RESULTS: One hundred twenty-seven individuals with 51 unique pathogenic or likely pathogenic GREB1L variants were identified. 24 (47%) variants were associated with isolated kidney anomalies, 19 (37%) with anomalies of multiple systems, including one case of hypoplastic left heart syndrome, five (10%) with isolated sensorineural hearing loss, two (4%) with isolated uterine agenesis; and one (2%) with isolated tetralogy of Fallot. CONCLUSION: GREB1L may cause complex congenital heart disease (CHD) in humans. Clinicians should consider GREB1L testing in the setting of CHD, and cardiac screening in the setting of GREB1L variants.


Asunto(s)
Cardiopatías Congénitas , Enfermedades Renales , Anomalías Urogenitales , Femenino , Humanos , Cardiopatías Congénitas/epidemiología , Cardiopatías Congénitas/genética , Riñón/anomalías , Enfermedades Renales/congénito , Proteínas de Neoplasias/genética , Anomalías Urogenitales/genética
7.
J Neuroophthalmol ; 2024 Jan 03.
Artículo en Inglés | MEDLINE | ID: mdl-38170607

RESUMEN

BACKGROUND: Idiopathic intracranial hypertension (IIH) disproportionately affects women from socioeconomically disadvantaged communities, but specific social determinants of health have not been examined. METHODS: We used data from the National Institutes of Health's All of Us Research Program, an ongoing nationwide study of more than 300,000 diverse individuals in the United States. Height and weight were measured at baseline, and participants completed questionnaires about demographics, health care access, and quality of life. Women aged 18-50 years with IIH were identified through electronic health record data, excluding those with venous thrombosis, meningitis, hydrocephalus, or central nervous system neoplasms. We used logistic regression to compare questionnaire responses for IIH cases and controls, adjusting for age, race, ethnicity, annual income, and body mass index (BMI). RESULTS: We included 416 women with IIH and 107,111 women without IIH. The mean age was 38 years, and 49.3% identified as non-White. After adjusting for age, race/ethnicity, and BMI, women with IIH were more likely to be unemployed (odds ratio [OR] 1.40, 95% confidential interval [CI]: 1.14-1.71) and report delaying care because of difficulty affording copays (OR 1.47, 95% CI: 1.02-2.10) or specialist care (OR 1.52, 95% CI: 1.06-2.18). They also delayed care because of rural residence (OR 2.08, 95% CI: 1.25-3.47) and transportation limitations (OR 2.23, 95% CI: 1.55-3.20). Although women with IIH were more likely to be non-Hispanic Black (OR 1.66, 95% CI: 1.32-2.09), this association lost significance when controlling for BMI and income (OR 1.27, 95% CI: 0.96-1.68). CONCLUSIONS: Women with IIH experience adverse social determinants of health beyond those associated with obesity alone.

8.
Stem Cells ; 42(4): 301-316, 2024 Apr 15.
Artículo en Inglés | MEDLINE | ID: mdl-38262709

RESUMEN

Somatic cells that have been partially reprogrammed by the factors Oct4, Sox2, Klf4, and cMyc (OSKM) have been demonstrated to be potentially tumorigenic in vitro and in vivo due to the acquisition of cancer-associated genomic alterations and the absence of OSKM clearance over time. In the present study, we obtained partially reprogrammed, SSEA1-negative cells by transducing murine hepatocytes with Δ1Δ3-deleted adenoviruses that expressed the 4 OSKM factors. We observed that, under long-term 2D and 3D culture conditions, hepatocytes could be converted into LGR5-positive cells with self-renewal capacity that was dependent on 3 cross-signaling pathways: IL6/Jak/Stat3, LGR5/R-spondin, and Wnt/ß-catenin. Following engraftment in syngeneic mice, LGR5-positive cells that expressed the cancer markers CD51, CD166, and CD73 were capable of forming invasive and metastatic tumors reminiscent of intrahepatic cholangiocarcinoma (ICC): they were positive for CK19 and CK7, featured associations of cord-like structures, and contained cuboidal and atypical cells with dissimilar degrees of pleomorphism and mitosis. The LGR5+-derived tumors exhibited a highly vascularized stroma with substantial fibrosis. In addition, we identified pro-angiogenic factors and signaling pathways involved in neo-angiogenesis and vascular development, which represent potential new targets for anti-angiogenic strategies to overcome tumor resistance to current ICC treatments.


Asunto(s)
Neoplasias de los Conductos Biliares , Colangiocarcinoma , Animales , Ratones , Hepatocitos/metabolismo , Colangiocarcinoma/genética , Colangiocarcinoma/metabolismo , Neoplasias de los Conductos Biliares/genética , Neoplasias de los Conductos Biliares/metabolismo , Conductos Biliares Intrahepáticos/metabolismo , Receptores Acoplados a Proteínas G/genética , Receptores Acoplados a Proteínas G/metabolismo , Vía de Señalización Wnt/genética
9.
Cytotherapy ; 26(1): 63-72, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-37921725

RESUMEN

INTRODUCTION: Previous studies have suggested that the tyrosine kinase receptor RET plays a significant role in the hematopoietic potential in mice and could also be used to expand cord-blood derived hematopoietic stem cells (HSCs). The role of RET in human iPSC-derived hematopoiesis has not been tested so far. METHODS: To test the implication of RET on the hematopoietic potential of iPSCs, we activated its pathway with the lentiviral overexpression of RETWT or RETC634Y mutation in normal iPSCs. An iPSC derived from a patient harboring the RETC634Y mutation (iRETC634Y) and its CRISPR-corrected isogenic control iPSC (iRETCTRL) were also used. The hematopoietic potential was tested using 2D cultures and evaluated regarding the phenotype and the clonogenic potential of generated cells. RESULTS: Hematopoietic differentiation from iPSCs with RET overexpression (WT or C634Y) led to a significant reduction in the number and in the clonogenic potential of primitive hematopoietic cells (CD34+/CD38-/CD49f+) as compared to control iPSCs. Similarly, the hematopoietic potential of iRETC634Y was reduced as compared to iRETCTRL. Transcriptomic analyses revealed a specific activated expression profile for iRETC634Y compared to its control with evidence of overexpression of genes which are part of the MAPK network with negative hematopoietic regulator activities. CONCLUSION: RET activation in iPSCs is associated with an inhibitory activity in iPSC-derived hematopoiesis, potentially related to MAPK activation.


Asunto(s)
Células Madre Hematopoyéticas , Células Madre Pluripotentes Inducidas , Humanos , Ratones , Animales , Proteínas Tirosina Quinasas Receptoras/metabolismo , Diferenciación Celular/genética , Hematopoyesis/genética , Proteínas Proto-Oncogénicas c-ret/genética , Proteínas Proto-Oncogénicas c-ret/metabolismo
10.
Graefes Arch Clin Exp Ophthalmol ; 262(3): 865-870, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-37947822

RESUMEN

PURPOSE: Older adults with Alzheimer's disease are less likely to be offered cataract surgery than the general population, but these disparities have not been examined in the context of other neurodegenerative disorders such as Parkinson's disease (PD). METHODS: Using data from the English Longitudinal Study on Ageing (ELSA), an ongoing, longitudinal population-based survey of older adults in England, we examined the relationship between PD and cataract surgery among adults 50 and older. We used logistic regression to measure the association between PD and history of cataract surgery at baseline. In longitudinal analyses of subjects with no history of cataract surgery at time of enrollment, we used semiparametric, discrete-time proportional hazards models to model the incidence of cataract surgery as a function of PD and other time-dependent covariates. Models were adjusted for demographic variables, self-reported comorbidities, and measures of daily activity limitation. RESULTS: We included data from 19,241 eligible ELSA respondents, of whom 231 (1.2%) reported a diagnosis of PD. PD was positively associated with a history of self-reported cataract surgery at baseline (OR 3.66, 95% CI: 2.55-5.26), but this did not remain significant after adjusting for confounders (OR 1.22, 95% CI: 0.75-1.98). Among subjects with no history of cataract surgery at baseline, PD was also not associated with incident cataract surgery (adjusted HR 1.32, 95% CI: 0.86-2.02). CONCLUSION: Unlike Alzheimer's disease, people with PD were no less likely to receive cataract surgery compared to those without PD.


Asunto(s)
Enfermedad de Alzheimer , Catarata , Enfermedad de Parkinson , Anciano , Humanos , Envejecimiento , Catarata/complicaciones , Catarata/epidemiología , Estudios Longitudinales , Enfermedad de Parkinson/complicaciones , Enfermedad de Parkinson/epidemiología , Persona de Mediana Edad
11.
Sci Rep ; 13(1): 21540, 2023 12 06.
Artículo en Inglés | MEDLINE | ID: mdl-38057357

RESUMEN

Exome sequencing (ES) has been used in a variety of clinical settings but there are limited data on its utility for diagnosis and/or prediction of monogenic liver diseases. We developed a curated list of 502 genes for monogenic disorders associated with liver phenotypes and analyzed ES data for these genes in 758 patients with chronic liver diseases (CLD). For comparison, we examined ES data in 7856 self-declared healthy controls (HC), and 2187 patients with chronic kidney disease (CKD). Candidate pathogenic (P) or likely pathogenic (LP) variants were initially identified in 19.9% of participants, most of which were attributable to previously reported pathogenic variants with implausibly high allele frequencies. After variant annotation and filtering based on population minor allele frequency (MAF ≤ 10-4 for dominant disorders and MAF ≤ 10-3 for recessive disorders), we detected a significant enrichment of P/LP variants in the CLD cohort compared to the HC cohort (X2 test OR 5.00, 95% CI 3.06-8.18, p value = 4.5e-12). A second-level manual annotation was necessary to capture true pathogenic variants that were removed by stringent allele frequency and quality filters. After these sequential steps, the diagnostic rate of monogenic disorders was 5.7% in the CLD cohort, attributable to P/LP variants in 25 genes. We also identified concordant liver disease phenotypes for 15/22 kidney disease patients with P/LP variants in liver genes, mostly associated with cystic liver disease phenotypes. Sequencing results had many implications for clinical management, including familial testing for early diagnosis and management, preventative screening for associated comorbidities, and in some cases for therapy. Exome sequencing provided a 5.7% diagnostic rate in CLD patients and required multiple rounds of review to reduce both false positive and false negative findings. The identification of concordant phenotypes in many patients with P/LP variants and no known liver disease also indicates a potential for predictive testing for selected monogenic liver disorders.


Asunto(s)
Enfermedades Renales , Hepatopatías , Humanos , Secuenciación del Exoma , Frecuencia de los Genes , Fenotipo , Hepatopatías/diagnóstico , Hepatopatías/genética
12.
Cells ; 12(24)2023 12 15.
Artículo en Inglés | MEDLINE | ID: mdl-38132167

RESUMEN

REarranged during Transfection (RET) oncogenic rearrangements can occur in 1-2% of lung adenocarcinomas. While RET-driven NSCLC models have been developed using various approaches, no model based on patient-derived induced pluripotent stem cells (iPSCs) has yet been described. Patient-derived iPSCs hold great promise for disease modeling and drug screening. However, generating iPSCs with specific oncogenic drivers, like RET rearrangements, presents challenges due to reprogramming efficiency and genotypic variability within tumors. To address this issue, we aimed to generate lung progenitor cells (LPCs) from patient-derived iPSCs carrying the mutation RETC634Y, commonly associated with medullary thyroid carcinoma. Additionally, we established a RETC634Y knock-in iPSC model to validate the effect of this oncogenic mutation during LPC differentiation. We successfully generated LPCs from RETC634Y iPSCs using a 16-day protocol and detected an overexpression of cancer-associated markers as compared to control iPSCs. Transcriptomic analysis revealed a distinct signature of NSCLC tumor repression, suggesting a lung multilineage lung dedifferentiation, along with an upregulated signature associated with RETC634Y mutation, potentially linked to poor NSCLC prognosis. These findings were validated using the RETC634Y knock-in iPSC model, highlighting key cancerous targets such as PROM2 and C1QTNF6, known to be associated with poor prognostic outcomes. Furthermore, the LPCs derived from RETC634Y iPSCs exhibited a positive response to the RET inhibitor pralsetinib, evidenced by the downregulation of the cancer markers. This study provides a novel patient-derived off-the-shelf iPSC model of RET-driven NSCLC, paving the way for exploring the molecular mechanisms involved in RET-driven NSCLC to study disease progression and to uncover potential therapeutic targets.


Asunto(s)
Carcinoma de Pulmón de Células no Pequeñas , Células Madre Pluripotentes Inducidas , Neoplasias Pulmonares , Humanos , Carcinoma de Pulmón de Células no Pequeñas/genética , Carcinoma de Pulmón de Células no Pequeñas/tratamiento farmacológico , Diferenciación Celular/genética , Pulmón/patología , Neoplasias Pulmonares/patología , Proteínas Proto-Oncogénicas c-ret/genética
13.
Cell Commun Signal ; 21(1): 351, 2023 12 14.
Artículo en Inglés | MEDLINE | ID: mdl-38098017

RESUMEN

Oropharyngeal cancer, a subset of head and neck cancer, is increasingly recognized as a unique clinical entity primarily influenced by high-risk human papillomavirus (HPV) infections, particularly HPV-16. This review delves into the viral life cycle of HPV-16 and its interactions with host cells, with a specific focus on the crucial roles played by the viral oncoproteins E6 and E7. These oncoproteins drive cellular proliferation by targeting critical tumor suppressor proteins like p53 and Rb, resulting in uncontrolled cell growth and genomic instability. Furthermore, the significance of epigenetic modifications induced by HPV-16 and their implications is important for cancer progression. This comprehensive review provides valuable insights into the intricate molecular landscape of HPV-induced oropharyngeal cancer, shedding light on the development of targeted therapies and preventive strategies for this emerging global health concern. Video Abstract.


Asunto(s)
Neoplasias de Cabeza y Cuello , Proteínas Oncogénicas Virales , Neoplasias Orofaríngeas , Infecciones por Papillomavirus , Humanos , Papillomavirus Humano 16/genética , Papillomavirus Humano 16/metabolismo , Proteínas Oncogénicas Virales/metabolismo , Neoplasias Orofaríngeas/patología , Proteínas E7 de Papillomavirus/genética , Infecciones por Papillomavirus/complicaciones , Infecciones por Papillomavirus/genética , Infecciones por Papillomavirus/patología
14.
Proc Natl Acad Sci U S A ; 120(48): e2308342120, 2023 Nov 28.
Artículo en Inglés | MEDLINE | ID: mdl-37983492

RESUMEN

COVID-19 pneumonia causes acute lung injury and acute respiratory distress syndrome (ALI/ARDS) characterized by early pulmonary endothelial and epithelial injuries with altered pulmonary diffusing capacity and obstructive or restrictive physiology. Growth hormone-releasing hormone receptor (GHRH-R) is expressed in the lung and heart. GHRH-R antagonist, MIA-602, has been reported to modulate immune responses to bleomycin lung injury and inflammation in granulomatous sarcoidosis. We hypothesized that MIA-602 would attenuate rVSV-SARS-CoV-2-induced pulmonary dysfunction and heart injury in a BSL-2 mouse model. Male and female K18-hACE2tg mice were inoculated with SARS-CoV-2/USA-WA1/2020, BSL-2-compliant recombinant VSV-eGFP-SARS-CoV-2-Spike (rVSV-SARS-CoV-2), or PBS, and lung viral load, weight loss, histopathology, and gene expression were compared. K18-hACE2tg mice infected with rVSV-SARS-CoV-2 were treated daily with subcutaneous MIA-602 or vehicle and conscious, unrestrained plethysmography performed on days 0, 3, and 5 (n = 7 to 8). Five days after infection mice were killed, and blood and tissues collected for histopathology and protein/gene expression. Both native SARS-CoV-2 and rVSV-SARS-CoV-2 presented similar patterns of weight loss, infectivity (~60%), and histopathologic changes. Daily treatment with MIA-602 conferred weight recovery, reduced lung perivascular inflammation/pneumonia, and decreased lung/heart ICAM-1 expression compared to vehicle. MIA-602 rescued altered respiratory rate, increased expiratory parameters (Te, PEF, EEP), and normalized airflow parameters (Penh and Rpef) compared to vehicle, consistent with decreased airway inflammation. RNASeq followed by protein analysis revealed heightened levels of inflammation and end-stage necroptosis markers, including ZBP1 and pMLKL induced by rVSV-SARS-CoV-2, that were normalized by MIA-602 treatment, consistent with an anti-inflammatory and pro-survival mechanism of action in this preclinical model of COVID-19 pneumonia.


Asunto(s)
COVID-19 , Síndrome de Dificultad Respiratoria , Ratones , Masculino , Femenino , Animales , SARS-CoV-2 , COVID-19/patología , Pulmón/patología , Inflamación/patología , Síndrome de Dificultad Respiratoria/patología , Pérdida de Peso , Ratones Transgénicos , Modelos Animales de Enfermedad
15.
Int J Mol Sci ; 24(20)2023 Oct 22.
Artículo en Inglés | MEDLINE | ID: mdl-37895120

RESUMEN

Acute myeloid leukemia (AML) with BCR::ABL1 has recently been recognized as a distinct subtype in international classifications. Distinguishing it from myeloid blast crisis chronic myeloid leukemia (BC-CML) without evidence of a chronic phase (CP), remains challenging. We aimed to better characterize this entity by integrating clonal architecture analysis, mutational landscape assessment, and gene expression profiling. We analyzed a large retrospective cohort study including CML and AML patients. Two AML patients harboring a BCR::ABL1 fusion were included in the study. We identified BCR::ABL1 fusion as a primary event in one patient and a secondary one in the other. AML-specific variants were identified in both. Real-time RT-PCR experiments demonstrated that CD25 mRNA is overexpressed in advanced-phase CML compared to AML. Unsupervised principal component analysis showed that AML harboring a BCR::ABL1 fusion was clustered within AML. An AML vs. myeloid BC-CML differential expression signature was highlighted, and while ID4 (inhibitor of DNA binding 4) mRNA appears undetectable in most myeloid BC-CML samples, low levels are detected in AML samples. Therefore, CD25 and ID4 mRNA expression might differentiate AML with BCR::ABL1 from BC-CML and assign it to the AML group. A method for identifying this new WHO entity is then proposed. Finally, the hypothesis of AML with BCR::ABL1 arising from driver mutations on a BCR::ABL1 background behaving as a clonal hematopoiesis mutation is discussed. Validation of our data in larger cohorts and basic research are needed to better understand the molecular and cellular aspects of AML with a BCR::ABL1 entity.


Asunto(s)
Leucemia Mielógena Crónica BCR-ABL Positiva , Leucemia Mieloide Aguda , Humanos , Crisis Blástica/genética , Proteínas de Fusión bcr-abl/genética , Proteínas de Fusión bcr-abl/metabolismo , Estudios Retrospectivos , Leucemia Mielógena Crónica BCR-ABL Positiva/diagnóstico , Leucemia Mielógena Crónica BCR-ABL Positiva/genética , Leucemia Mielógena Crónica BCR-ABL Positiva/metabolismo , Leucemia Mieloide Aguda/diagnóstico , Leucemia Mieloide Aguda/genética , ARN Mensajero
16.
JAMA Neurol ; 80(12): 1371-1372, 2023 Dec 01.
Artículo en Inglés | MEDLINE | ID: mdl-37870830

RESUMEN

This case report describes a 23-year-old male patient with tonic-clonic seizure and subsequent treatment with anthelmintic therapy.


Asunto(s)
Neurocisticercosis , Humanos , Neurocisticercosis/diagnóstico por imagen , Convulsiones/tratamiento farmacológico , Anticonvulsivantes/uso terapéutico
17.
Sci Rep ; 13(1): 16843, 2023 10 06.
Artículo en Inglés | MEDLINE | ID: mdl-37803068

RESUMEN

Combining viruses and nanoparticles may be a way to successfully treat cancer and minimize adverse effects. The current work aimed to evaluate the efficacy of a specific combination of gold nanoparticles (GNPs) and Newcastle disease virus (NDV) to enhance the antitumor effect of breast cancer in both in vitro and in vivo models. Two human breast cancer cell lines (MCF-7 and AMJ-13) and a normal epithelial cell line (HBL-100) were used and treated with NDV and/or GNPs. The MTT assay was used to study the anticancer potentials of NDV and GNP. The colony formation assay and apoptosis markers were used to confirm the killing mechanisms of NDV and GNP against breast cancer cell lines. p53 and caspase-9 expression tested by the qRT-PCR technique. Our results showed that combination therapy had a significant killing effect against breast cancer cells. The findings demonstrated that NDV and GNPs induced apoptosis in cancer cells by activating caspase-9, the p53 protein, and other proteins related to apoptosis, which holds promise as a combination therapy for breast cancer.


Asunto(s)
Neoplasias de la Mama , Nanopartículas del Metal , Viroterapia Oncolítica , Virus Oncolíticos , Animales , Humanos , Femenino , Viroterapia Oncolítica/métodos , Caspasa 9/genética , Oro , Proteína p53 Supresora de Tumor/genética , Línea Celular Tumoral , Neoplasias de la Mama/terapia , Apoptosis , Inmunoterapia , Virus de la Enfermedad de Newcastle
18.
J Immunother ; 46(9): 351-354, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37727953

RESUMEN

Laser interstitial thermal therapy (LITT) is a minimally invasive neurosurgical technique used to ablate intra-axial brain tumors. The impact of LITT on the tumor microenvironment is scarcely reported. Nonablative LITT-induced hyperthermia (33-43˚C) increases intra-tumoral mutational burden and neoantigen production, promoting immunogenic cell death. To understand the local immune response post-LITT, we performed longitudinal molecular profiling in a newly diagnosed glioblastoma and conducted a systematic review of anti-tumoral immune responses after LITT. A 51-year-old male presented after a fall with progressive dizziness, ataxia, and worsening headaches with a small, frontal ring-enhancing lesion. After clinical and radiographic progression, the patient underwent stereotactic needle biopsy, confirming an IDH-WT World Health Organization Grade IV Glioblastoma, followed by LITT. The patient was subsequently started on adjuvant temozolomide, and 60 Gy fractionated radiotherapy to the post-LITT tumor volume. After 3 months, surgical debulking was conducted due to perilesional vasogenic edema and cognitive decline, with H&E staining demonstrating perivascular lymphocytic infiltration. Postoperative serial imaging over 3 years showed no evidence of tumor recurrence. The patient is currently alive 9 years after diagnosis. Multiplex immunofluorescence imaging of pre-LITT and post-LITT biopsies showed increased CD8 and activated macrophage infiltration and programmed death ligand 1 expression. This is the first depiction of the in-situ immune response to LITT and the first human clinical presentation of increased CD8 infiltration and programmed death ligand 1 expression in post-LITT tissue. Our findings point to LITT as a treatment approach with the potential for long-term delay of recurrence and improving response to immunotherapy.


Asunto(s)
Neoplasias Encefálicas , Glioblastoma , Hipertermia Inducida , Terapia por Láser , Masculino , Humanos , Persona de Mediana Edad , Glioblastoma/diagnóstico , Glioblastoma/terapia , Imagen por Resonancia Magnética , Terapia por Láser/métodos , Recurrencia Local de Neoplasia , Neoplasias Encefálicas/diagnóstico , Neoplasias Encefálicas/terapia , Hipertermia Inducida/métodos , Inmunidad , Rayos Láser , Estudios Retrospectivos , Microambiente Tumoral
19.
Kidney Int Rep ; 8(8): 1638-1647, 2023 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-37547535

RESUMEN

Introduction: The diagnosis and management of proteinuric kidney diseases such as focal segmental glomerulosclerosis (FSGS) are challenging. Genetics holds the promise to improve clinical decision making for these diseases; however, it is often performed too late to enable timely clinical action and it is not implemented within routine outpatient nephrology visits. Methods: We sought to test the implementation and feasibility of clinical rapid genome sequencing (GS) in guiding decision making in patients with proteinuric kidney disease in real-time and embedded in the outpatient nephrology setting. Results: We enrolled 10 children or young adults with biopsy-proven FSGS (9 cases) or minimal change disease (1 case). The mean age at enrollment was 16.2 years (range 2-30). The workflow did not require referral to external genetics clinics but was conducted entirely during the nephrology standard-of-care appointments. The total turn-around-time from enrollment to return-of-results and clinical decision averaged 21.8 days (12.4 for GS), which is well within a time frame that allows clinically relevant treatment decisions. A monogenic or APOL1-related form of kidney disease was diagnosed in 5 of 10 patients. The genetic findings resulted in a rectified diagnosis in 6 patients. Both positive and negative GS findings determined a change in pharmacological treatment. In 3 patients, the results were instrumental for transplant evaluation, donor selection, and the immunosuppressive treatment. All patients and families received genetic counseling. Conclusion: Clinical GS is feasible and can be implemented in real-time in the outpatient care to help guiding clinical management. Additional studies are needed to confirm the cost-effectiveness and broader utility of clinical GS across the phenotypic and demographic spectrum of kidney diseases.

20.
J Drug Target ; 31(7): 714-724, 2023 08.
Artículo en Inglés | MEDLINE | ID: mdl-37461888

RESUMEN

Bone morphogenetic protein (BMP)-9 is considered a member of the transforming growth factor (TGF)ß superfamily. It was first found as an inducer of bone and cartilage formation and then discovered that this factor mediates several physiologic functions and hemostasis. Besides physiological conditions, BMP9 has also been elucidated that it is involved in several pathological situations, especially cancer. In various cancers, dysregulation of BMP9 has raised the issue that BMP9 might play a conflicting role in tumour development. BMP9 binding to its receptors (BMPRs), including ALKs and BMPRII, induces canonical SMAD-dependent and non-canonical PI3K/AKT and MAPK signalling pathways in tumour cells. BMP9, via inducing apoptosis, inhibiting tumour-promoting cell signalling pathways, suppressing epithelial-mesenchymal transition (EMT) process, blocking angiogenesis, and preventing cross-talk in the tumour microenvironment, mainly exerts tumour-suppressive functions. In contrast, BMP9 triggers tumour-supportive signalling pathways, promotes EMT, and enhances angiogenesis, suggesting that BMP9 is also involved in tumour development. It has been demonstrated that modulating BMP9 expression and functions might be a promising approach to cancer treatment. It has also been indicated that evaluating BMP9 expression in cancers might be a biomarker for predicting cancer prognosis. Overall, BMP9 would provide a promising target in cancer management.


Asunto(s)
Factor 2 de Diferenciación de Crecimiento , Neoplasias , Humanos , Factor 2 de Diferenciación de Crecimiento/metabolismo , Factor 2 de Diferenciación de Crecimiento/farmacología , Fosfatidilinositol 3-Quinasas/metabolismo , Proteínas Morfogenéticas Óseas , Transducción de Señal , Neoplasias/diagnóstico , Neoplasias/tratamiento farmacológico , Factor de Crecimiento Transformador beta , Microambiente Tumoral
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