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1.
PLoS One ; 19(4): e0301760, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38625954

RESUMO

Cloud computing alludes to the on-demand availability of personal computer framework resources, primarily information storage and processing power, without the customer's direct personal involvement. Cloud computing has developed dramatically among many organizations due to its benefits such as cost savings, resource pooling, broad network access, and ease of management; nonetheless, security has been a major concern. Researchers have proposed several cryptographic methods to offer cloud data security; however, their execution times are linear and longer. A Security Key 4 Optimization Algorithm (SK4OA) with a non-linear run time is proposed in this paper. The secret key of SK4OA determines the run time rather than the size of the data as such is able to transmit large volumes of data with minimal bandwidth and able to resist security attacks like brute force since its execution timings are unpredictable. A data set from Kaggle was used to determine the algorithm's mean and standard deviation after thirty (30) times of execution. Data sizes of 3KB, 5KB, 8KB, 12KB, and 16 KB were used in this study. There was an empirical analysis done against RC4, Salsa20, and Chacha20 based on encryption time, decryption time, throughput and memory utilization. The analysis showed that SK4OA generated lowest mean non-linear run time of 5.545±2.785 when 16KB of data was executed. Additionally, SK4OA's standard deviation was greater, indicating that the observed data varied far from the mean. However, RC4, Salsa20, and Chacha20 showed smaller standard deviations making them more clustered around the mean resulting in predictable run times.


Assuntos
Algoritmos , Armazenamento e Recuperação da Informação , Computação em Nuvem , Segurança Computacional , Microcomputadores
2.
Sci Transl Med ; 16(737): eadf4601, 2024 Mar 06.
Artigo em Inglês | MEDLINE | ID: mdl-38446899

RESUMO

Patients with cancer undergoing chemotherapy frequently experience a neurological condition known as chemotherapy-related cognitive impairment, or "chemobrain," which can persist for the remainder of their lives. Despite the growing prevalence of chemobrain, both its underlying mechanisms and treatment strategies remain poorly understood. Recent findings suggest that chemobrain shares several characteristics with neurodegenerative diseases, including chronic neuroinflammation, DNA damage, and synaptic loss. We investigated whether a noninvasive sensory stimulation treatment we term gamma entrainment using sensory stimuli (GENUS), which has been shown to alleviate aberrant immune and synaptic pathologies in mouse models of neurodegeneration, could also mitigate chemobrain phenotypes in mice administered a chemotherapeutic drug. When administered concurrently with the chemotherapeutic agent cisplatin, GENUS alleviated cisplatin-induced brain pathology, promoted oligodendrocyte survival, and improved cognitive function in a mouse model of chemobrain. These effects persisted for up to 105 days after GENUS treatment, suggesting the potential for long-lasting benefits. However, when administered to mice 90 days after chemotherapy, GENUS treatment only provided limited benefits, indicating that it was most effective when used to prevent the progression of chemobrain pathology. Furthermore, we demonstrated that the effects of GENUS in mice were not limited to cisplatin-induced chemobrain but also extended to methotrexate-induced chemobrain. Collectively, these findings suggest that GENUS may represent a versatile approach for treating chemobrain induced by different chemotherapy agents.


Assuntos
Comprometimento Cognitivo Relacionado à Quimioterapia , Disfunção Cognitiva , Humanos , Animais , Camundongos , Cisplatino/efeitos adversos , Cognição , Dano ao DNA , Modelos Animais de Doenças
3.
Respir Med ; 222: 107525, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38182000

RESUMO

RATIONALE: As the prevalence of multimorbidity increases, understanding the impact of isolated comorbidities in people COPD becomes increasingly challenging. A simplified model of common comorbidity patterns may improve outcome prediction and allow targeted therapy. OBJECTIVES: To assess whether comorbidity phenotypes derived from routinely collected clinical data in people with COPD show differences in risk of hospitalisation and mortality. METHODS: Twelve clinical measures related to common comorbidities were collected during annual reviews for people with advanced COPD and k-means cluster analysis performed. Cox proportional hazards with adjustment for covariates was used to determine hospitalisation and mortality risk between clusters. MEASUREMENTS AND MAIN RESULTS: In 203 participants (age 66 ± 9 years, 60 % male, FEV1%predicted 31 ± 10 %) no comorbidity in isolation was predictive of worse admission or mortality risk. Four clusters were described: cluster A (cardiometabolic and anaemia), cluster B (malnourished and low mood), cluster C (obese, metabolic and mood disturbance) and cluster D (less comorbid). FEV1%predicted did not significantly differ between clusters. Mortality risk was higher in cluster A (HR 3.73 [95%CI 1.09-12.82] p = 0.036) and B (HR 3.91 [95%CI 1.17-13.14] p = 0.027) compared to cluster D. Time to admission was highest in cluster A (HR 2.01 [95%CI 1.11-3.63] p = 0.020). Cluster C was not associated with increased risk of mortality or hospitalisation. CONCLUSIONS: Despite presence of advanced COPD, we report striking differences in prognosis for both mortality and hospital admissions for different co-morbidity phenotypes. Objectively assessing the multi-system nature of COPD could lead to improved prognostication and targeted therapy for patients.


Assuntos
Doença Pulmonar Obstrutiva Crônica , Humanos , Masculino , Pessoa de Meia-Idade , Idoso , Feminino , Comorbidade , Hospitalização , Depressão , Morbidade
4.
Endocrine ; 83(2): 330-341, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-37658978

RESUMO

BACKGROUND: The global prevalence of thyroid cancer is on the rise. About one-third of newly diagnosed thyroid cancer cases comprise low-risk papillary thyroid cancer (1.5 cm or more minor). While surgical removal remains the prevailing approach for managing low-risk papillary thyroid cancer (LPTC) in patients, other options such as active surveillance (AS), radiofrequency ablation (RFA), microwave ablation (MWA), and laser ablation (LA) are also being considered as viable alternatives. This study evaluated and compared surgical thyroid resection (TSR) versus non-surgical (NS) methods for treating patients with LPTC. METHODS: The study encompassed an analysis of comparisons between surgical thyroid resection (TSR) and alternative approaches, including active surveillance (AS), radiofrequency ablation (RFA), microwave ablation (MWA), or laser ablation (LA). The focus was on patients with biopsy-confirmed low-risk papillary thyroid cancer (LPTC) of less than 1.5 cm without preoperative indications of local or distant metastasis. The primary outcomes assessed were recurrence rates, disease-specific mortality, and quality of life (QoL). Data were collected from prominent databases, including Cochrane Database, Embase, MEDLINE, and Scopus, from inception to June 3rd, 2020. The CLARITY tool was utilized to evaluate bias risk. The analysis involved odds ratios (OR) with 95% confidence intervals (CI) for dichotomous outcomes, as well as mean differences (MD) and standardized mean differences (SMD) for continuous outcomes. The study is registered on PROSPERO under the identifier CRD42021235657. RESULTS: The study incorporated 13 retrospective cohort studies involving 4034 patients. Surgical thyroid resection (TSR), active surveillance (AS), and minimally invasive techniques like radiofrequency ablation (RFA), microwave ablation (MWA), and laser ablation (LA) were performed in varying proportions of cases. The analysis indicated that specific disease mortality rates were comparable among AS, MWA, and TSR groups. The risk of recurrence, evaluated over different follow-up periods, showed no significant differences when comparing AS, RFA, MWA, or LA against TSR. Patients undergoing AS demonstrated better physical health-related quality of life (QoL) than those undergoing TSR. However, no substantial differences were observed in the overall mental health domain of QoL when comparing AS or RFA with TSR. The risk of bias was moderate in nine studies and high in four. CONCLUSION: Low-quality evidence indicates comparable recurrence and disease-specific mortality risks among patients with LPTC who underwent ablation techniques or active surveillance (AS) compared to surgery. Nevertheless, individuals who opted for AS exhibited enhanced physical quality of life (QoL). Subsequent investigations are warranted to validate these findings.


Assuntos
Técnicas de Ablação , Ablação por Cateter , Neoplasias da Glândula Tireoide , Humanos , Qualidade de Vida , Ablação por Cateter/métodos , Câncer Papilífero da Tireoide , Estudos Retrospectivos , Conduta Expectante , Resultado do Tratamento
5.
Surgery ; 175(1): 19-24, 2024 01.
Artigo em Inglês | MEDLINE | ID: mdl-37925258

RESUMO

BACKGROUND: Prior research has demonstrated barriers to the workup and management of primary hyperparathyroidism. As recent data have suggested that patient and practitioner sex concordance is associated with lower surgical complications, we sought to evaluate the effect of sex concordance on referral for primary hyperparathyroidism. METHODS: We queried an institutional database for patients with first-incident hypercalcemia and subsequent biochemical evidence of primary hyperparathyroidism between 2010 and 2018. Primary care practitioner and endocrinologist sex, laboratory values, and complications of primary hyperparathyroidism were collected. Sex concordance (male patient/male practitioner or female patient/female practitioner) was evaluated as a binary predictor of specialist evaluation using logistic regression and Cox proportional hazards modeling. RESULTS: Among 1,100 patients, mean age was 62.5 (standard deviation 13.6), and 74% were female sex. Primary care practitioner sex was 52% female, and 63% of patients had sex concordance with their primary care practitioner. Endocrinologist sex was 59% female, and 45% of patients had sex concordance with their endocrinologist. Patients with sex concordance with their primary care practitioner (70 vs 80%, P = .001) and endocrinologist (71 vs 82%, P < .001) were less likely to be female sex compared to those with discordance. After adjusting for demographics and clinical covariates, those patients with primary care practitioner sex concordance had 32% higher odds of endocrinologist evaluation (odds ratio 1.32, 95% confidence interval 1.003-1.734, P = .047). Similarly, those patients with endocrinologist sex concordance had a 48% higher rate of surgeon evaluation (hazard ratio 1.48, confidence interval 1.1-2.0, P = .009). Stratified analysis revealed that sex discordance reduced the rate of surgeon referral for female patients (hazard ratio 0.63, confidence interval 0.44-0.89, P = .008) but not male patients (hazard ratio 1.06, CI 0.58-1.93, P = .861). CONCLUSION: Sex discordance between patients and their health care professionals may contribute to under-referral in primary hyperparathyroidism. Further evaluation of the effect of patient and practitioner identities on communication and decision-making in surgery are needed.


Assuntos
Hipercalcemia , Hiperparatireoidismo Primário , Cirurgiões , Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Hiperparatireoidismo Primário/complicações , Hiperparatireoidismo Primário/diagnóstico , Hiperparatireoidismo Primário/cirurgia , Hipercalcemia/cirurgia , Encaminhamento e Consulta , Coleta de Dados
6.
Surgery ; 175(1): 25-31, 2024 01.
Artigo em Inglês | MEDLINE | ID: mdl-37925262

RESUMO

BACKGROUND: Identifying patients at risk for under-evaluation of primary hyperparathyroidism is essential to minimizing long-term sequelae, including osteoporosis, nephrolithiasis, and cardiovascular disease. This study assessed the impact of social vulnerability on time-to-surgery evaluation among patients with primary hyperparathyroidism in a Massachusetts cohort. METHODS: This is a retrospective review of patients from an institutional database with the first incident of hypercalcemia between 2010 and 2018 and subsequent biochemical diagnosis of primary hyperparathyroidism. The overall social vulnerability index and social vulnerability index subthemes were merged with the institutional data via patient ZIP code. Patients were stratified into social vulnerability index quartiles, where quartile 4 represented the highest vulnerability. Baseline sociodemographic and clinical characteristics were compared, and Cox regression was used to assess the association between social vulnerability index and time to surgeon evaluation. RESULTS: Of 1,082 patients included, those with a higher social vulnerability index were less likely to be evaluated by a surgeon (quartile 1 social vulnerability index: 31.1% vs. quartile 2 social vulnerability index: 31.41% vs. quartile 3 social vulnerability index: 25.93% vs. quartile 4 social vulnerability index: 21.92%, P = .03). On adjusted analysis, patients with the highest vulnerability had a 33% lower estimated rate of surgeon evaluation and were seen 67 days later compared with patients with the lowest vulnerability (hazard ratio: 0.67, confidence interval 0.47-0.97, P = .032). Differential rates of surgical evaluation by vulnerability persisted for the social vulnerability index subthemes for socioeconomic status, minority status and language, and housing type and transportation. CONCLUSION: Among a Massachusetts cohort, highly vulnerable populations with primary hyperparathyroidism are at greater risk for under-evaluation by a surgeon, which may contribute to the development of long-term sequelae of their disease.


Assuntos
Hipercalcemia , Hiperparatireoidismo Primário , Cirurgiões , Humanos , Hiperparatireoidismo Primário/complicações , Hiperparatireoidismo Primário/diagnóstico , Hiperparatireoidismo Primário/cirurgia , Vulnerabilidade Social , Hipercalcemia/cirurgia , Massachusetts/epidemiologia , Progressão da Doença
7.
bioRxiv ; 2023 Nov 13.
Artigo em Inglês | MEDLINE | ID: mdl-38014075

RESUMO

Identifying transcriptional enhancers and their target genes is essential for understanding gene regulation and the impact of human genetic variation on disease1-6. Here we create and evaluate a resource of >13 million enhancer-gene regulatory interactions across 352 cell types and tissues, by integrating predictive models, measurements of chromatin state and 3D contacts, and largescale genetic perturbations generated by the ENCODE Consortium7. We first create a systematic benchmarking pipeline to compare predictive models, assembling a dataset of 10,411 elementgene pairs measured in CRISPR perturbation experiments, >30,000 fine-mapped eQTLs, and 569 fine-mapped GWAS variants linked to a likely causal gene. Using this framework, we develop a new predictive model, ENCODE-rE2G, that achieves state-of-the-art performance across multiple prediction tasks, demonstrating a strategy involving iterative perturbations and supervised machine learning to build increasingly accurate predictive models of enhancer regulation. Using the ENCODE-rE2G model, we build an encyclopedia of enhancer-gene regulatory interactions in the human genome, which reveals global properties of enhancer networks, identifies differences in the functions of genes that have more or less complex regulatory landscapes, and improves analyses to link noncoding variants to target genes and cell types for common, complex diseases. By interpreting the model, we find evidence that, beyond enhancer activity and 3D enhancer-promoter contacts, additional features guide enhancerpromoter communication including promoter class and enhancer-enhancer synergy. Altogether, these genome-wide maps of enhancer-gene regulatory interactions, benchmarking software, predictive models, and insights about enhancer function provide a valuable resource for future studies of gene regulation and human genetics.

9.
PLoS One ; 18(9): e0290831, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37676866

RESUMO

The cloud is becoming a hub for sensitive data as technology develops, making it increasingly vulnerable, especially as more people get access. Data should be protected and secured since a larger number of individuals utilize the cloud for a variety of purposes. Confidentiality and privacy of data is attained through the use of cryptographic techniques. While each cryptographic method completes the same objective, they all employ different amounts of CPU, memory, throughput, encryption, and decryption times. It is necessary to contrast the various possibilities in order to choose the optimal cryptographic algorithm. An integrated data size of 5n*102 (KB (∈ 1,2,4,10,20,40) is evaluated in this article. Performance metrics including run time, memory use, and throughput time were used in the comparison. To determine the effectiveness of each cryptographic technique, the data sizes were run fifteen (15) times, and the mean simulation results were then reported. In terms of run time trend, NCS is superior to the other algorithms according to Friedman's test and Bonferroni's Post Hoc test.


Assuntos
Algoritmos , Privacidade , Humanos , Benchmarking , Simulação por Computador , Confidencialidade
10.
Cell ; 186(20): 4386-4403.e29, 2023 09 28.
Artigo em Inglês | MEDLINE | ID: mdl-37774678

RESUMO

Altered microglial states affect neuroinflammation, neurodegeneration, and disease but remain poorly understood. Here, we report 194,000 single-nucleus microglial transcriptomes and epigenomes across 443 human subjects and diverse Alzheimer's disease (AD) pathological phenotypes. We annotate 12 microglial transcriptional states, including AD-dysregulated homeostatic, inflammatory, and lipid-processing states. We identify 1,542 AD-differentially-expressed genes, including both microglia-state-specific and disease-stage-specific alterations. By integrating epigenomic, transcriptomic, and motif information, we infer upstream regulators of microglial cell states, gene-regulatory networks, enhancer-gene links, and transcription-factor-driven microglial state transitions. We demonstrate that ectopic expression of our predicted homeostatic-state activators induces homeostatic features in human iPSC-derived microglia-like cells, while inhibiting activators of inflammation can block inflammatory progression. Lastly, we pinpoint the expression of AD-risk genes in microglial states and differential expression of AD-risk genes and their regulators during AD progression. Overall, we provide insights underlying microglial states, including state-specific and AD-stage-specific microglial alterations at unprecedented resolution.


Assuntos
Doença de Alzheimer , Microglia , Humanos , Doença de Alzheimer/genética , Doença de Alzheimer/patologia , Regulação da Expressão Gênica , Inflamação/patologia , Microglia/metabolismo , Fatores de Transcrição/metabolismo , Transcriptoma , Epigenoma
11.
Cell ; 186(20): 4422-4437.e21, 2023 09 28.
Artigo em Inglês | MEDLINE | ID: mdl-37774680

RESUMO

Recent work has identified dozens of non-coding loci for Alzheimer's disease (AD) risk, but their mechanisms and AD transcriptional regulatory circuitry are poorly understood. Here, we profile epigenomic and transcriptomic landscapes of 850,000 nuclei from prefrontal cortexes of 92 individuals with and without AD to build a map of the brain regulome, including epigenomic profiles, transcriptional regulators, co-accessibility modules, and peak-to-gene links in a cell-type-specific manner. We develop methods for multimodal integration and detecting regulatory modules using peak-to-gene linking. We show AD risk loci are enriched in microglial enhancers and for specific TFs including SPI1, ELF2, and RUNX1. We detect 9,628 cell-type-specific ATAC-QTL loci, which we integrate alongside peak-to-gene links to prioritize AD variant regulatory circuits. We report differential accessibility of regulatory modules in late AD in glia and in early AD in neurons. Strikingly, late-stage AD brains show global epigenome dysregulation indicative of epigenome erosion and cell identity loss.


Assuntos
Doença de Alzheimer , Encéfalo , Regulação da Expressão Gênica , Humanos , Doença de Alzheimer/genética , Doença de Alzheimer/patologia , Encéfalo/patologia , Epigenoma , Epigenômica , Estudo de Associação Genômica Ampla
13.
Nat Genet ; 55(10): 1665-1676, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37770633

RESUMO

Genetic variants associated with complex traits are primarily noncoding, and their effects on gene-regulatory activity remain largely uncharacterized. To address this, we profile epigenomic variation of histone mark H3K27ac across 387 brain, heart, muscle and lung samples from Genotype-Tissue Expression (GTEx). We annotate 282 k active regulatory elements (AREs) with tissue-specific activity patterns. We identify 2,436 sex-biased AREs and 5,397 genetically influenced AREs associated with 130 k genetic variants (haQTLs) across tissues. We integrate genetic and epigenomic variation to provide mechanistic insights for disease-associated loci from 55 genome-wide association studies (GWAS), by revealing candidate tissues of action, driver SNPs and impacted AREs. Lastly, we build ARE-gene linking scores based on genetics (gLink scores) and demonstrate their unique ability to prioritize SNP-ARE-gene circuits. Overall, our epigenomic datasets, computational integration and mechanistic predictions provide valuable resources and important insights for understanding the molecular basis of human diseases/traits such as schizophrenia.


Assuntos
Epigenômica , Estudo de Associação Genômica Ampla , Humanos , Locos de Características Quantitativas/genética , Genótipo , Redes Reguladoras de Genes , Polimorfismo de Nucleotídeo Único/genética , Predisposição Genética para Doença
14.
bioRxiv ; 2023 Aug 17.
Artigo em Inglês | MEDLINE | ID: mdl-37645757

RESUMO

Patient-specific, human-based cellular models that integrate biomimetic BBB, immune, and myelinated neuron components are critically needed to enable translationally relevant and accelerated discovery of neurological disease mechanisms and interventions. By engineering a brain-mimicking 3D hydrogel and co-culturing all six major brain cell types derived from patient iPSCs, we have constructed, characterized, and utilized a multicellular integrated brain (miBrain) immuno-glial-neurovascular model with in vivo- like hallmarks. As proof of principle, here we utilized the miBrain to model Alzheimer's Disease pathologies associated with APOE4 genetic risk. APOE4 miBrains differentially exhibit amyloid aggregation, tau phosphorylation, and astrocytic GFAP. Unlike the co-emergent fate specification of glia and neurons in organoids, miBrains integrate independently differentiated cell types in a modular system with unique utility for elucidating cell-type specific contributions to pathogenesis. We here harness this feature to identify that risk factor APOE4 in astrocytes promotes tau pathogenesis and neuronal dysregulation through crosstalk with microglia. One-Sentence Summary: A novel patient-specific brain model with BBB, neuronal, immune, and glial components was developed, characterized, and harnessed to model Alzheimer's Disease-associated pathologies and APOE4 genetic risk.

15.
Curr Opin Endocrinol Diabetes Obes ; 30(5): 238-243, 2023 10 01.
Artigo em Inglês | MEDLINE | ID: mdl-37470486

RESUMO

PURPOSE OF REVIEW: Financial burden and distress are high in patients with thyroid cancer. However, little has been done to evaluate potential interventions to mitigate financial toxicity in survivors. This review will cover current data on the impact of financial toxicity on quality of life and clinical outcomes in patients with thyroid cancer and highlight areas for future study. RECENT FINDINGS: Thyroid cancer incidence has nearly tripled in the past decades, and cost of treatment is predicted to rise more than other cancers over the next decade. With mean age of diagnosis at 51 years, most patients begin treatment while still working, do not qualify for Medicare or Social Security, and are susceptible to higher financial burden. Though thyroid cancer has high survival rates, some studies suggest patients have worse quality of life and higher financial burden than more morbid cancers. SUMMARY: Thyroid cancer survivors have high rates of financial toxicity, and there remains need for longitudinal studies to evaluate how financial burden may change during the treatment process while also assessing potential tools to mitigate this burden.


Assuntos
Sobreviventes de Câncer , Neoplasias , Neoplasias da Glândula Tireoide , Idoso , Humanos , Estados Unidos/epidemiologia , Pessoa de Meia-Idade , Qualidade de Vida , Estresse Financeiro , Medicare , Neoplasias da Glândula Tireoide/terapia , Sobreviventes , Neoplasias/terapia
16.
Vet Dermatol ; 34(5): 425-440, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37316895

RESUMO

BACKGROUND: While the clinical features were described recently, the histopathological characterisation of trunk-dominant canine pemphigus foliaceus (PF) is lacking, and whether it differs from classic facial or insecticide-triggered PF is unknown. HYPOTHESIS/OBJECTIVES: This study describes the histopathological findings of trunk-dominant PF, and compares the results to classic facial and insecticide-triggered PF. ANIMALS: Skin biopsies from 103 dogs with clinically characterised trunk-dominant (n = 33), classic facial (n = 26) and insecticide-triggered PF (n = 44) were included. MATERIALS AND METHODS: Histological sections, randomised and blinded, were scored for over 50 morphological parameters of pustules, epidermis, dermis, adnexa and crusts. Intact pustule area and width were measured by digital microscopy. RESULTS: In trunk-dominant PF, 77 intact pustules were predominantly subcorneal (0.0019-1.940 mm2 area, 0.0470-4.2532 mm wide), and contained from one to over 100 acantholytic keratinocytes. Pustules had boat acantholytic cells, corneocytes, perinuclear eosinophilic rings, neutrophil rosettes, acantholytic cell necrosis, rafts, cling-ons and/or eosinophils. Peripustular epidermal spongiosis, necrosis and lymphocyte exocytosis occurred, as did follicular pustules. Mixed dermal inflammation often contained eosinophils. Trunk-dominant PF did not differ from the other PF groups except for few parameters, such as having fewer rafts (p = 0.003). Additional autoimmune inflammatory patterns occurred in all PF groups. CONCLUSIONS AND CLINICAL RELEVANCE: Trunk-dominant PF and other canine PF variants are histologically similar, which indicates shared pathomechanisms. The identification of common boat acantholytic cells and corneocyte separation has implications for the mechanisms of acantholysis. The diversity of histopathological and polyautoimmunity features support complicated immune mechanisms. Finally, results indicate that diagnostic biopsies cannot differentiate between these PF variants in dogs.


Assuntos
Inseticidas , Pênfigo , Cães , Animais , Pênfigo/veterinária , Pênfigo/diagnóstico , Pele/patologia , Epiderme/patologia , Vesícula/patologia , Vesícula/veterinária , Necrose/veterinária
17.
Thyroid ; 33(6): 724-731, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-37051707

RESUMO

Background: Delays in treatment for thyroid cancer (TC) have been associated with higher overall mortality rates. However, few studies have explored the impact of health disparities on delayed presentation and treatment for TC. This study aims to investigate what patient sociodemographic factors contribute to delays in presentation and treatment of TC. Methods: Using the National Cancer Database, we identified patients diagnosed with well-differentiated TC between 2004 and 2016 who underwent thyroidectomy. Multivariable regression analyses were conducted to examine the impact of race, insurance status, income, and distance from treatment facility on time to surgical treatment, stage, the presence of distant metastases, and tumor size. Results: We identified 89,105 patients diagnosed with well-differentiated TC who underwent thyroidectomy. Nonwhite patients who were uninsured or had Medicare or Medicaid insurance were more likely to experience delays in care, present with higher stages at diagnosis, and have distant metastases and larger tumors at presentation. Distance from treatment facility was associated with delays in surgical treatment and higher stage at presentation. Conclusion: Delays in TC presentation and surgical treatment vary by race, insurance status, and patient location. Health care policies should focus on targeting at-risk individuals to reduce health care disparities in this disease.


Assuntos
Medicare , Neoplasias da Glândula Tireoide , Humanos , Idoso , Estados Unidos , Seguro Saúde , Medicaid , Neoplasias da Glândula Tireoide/patologia , Pessoas sem Cobertura de Seguro de Saúde , Estudos Retrospectivos
18.
Thyroid ; 33(7): 849-857, 2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-37014086

RESUMO

Background: The 2015 American Thyroid Association (ATA) guidelines shifted recommendations toward less aggressive management of papillary thyroid cancer (PTC). Subsequently, several studies demonstrated a trend in performing thyroid lobectomy (TL) over total thyroidectomy (TT). However, regional variation has persisted without a clear indication of what factors may be influencing practice variation. We aimed to evaluate the surgical management of PTC in patients in rural and urban settings to assess trends of TL compared with TT following the implementation of the 2015 ATA guidelines. Methods: A retrospective cohort analysis was performed using the Surveillance, Epidemiology, and End Results (SEER) database from 2004 to 2019 of patients with localized PTC <4 cm who underwent TT or TL. Patients were classified as living in urban or rural counties based on the 2013 Rural-Urban Continuum Codes. Procedures performed from 2004 to 2015 were categorized as preguidelines, while those performed from 2016 to 2019 were categorized as postguidelines. Chi-square, Student's t-test, logistic regression, and Cochran-Mantel-Haenszel test were used. Results: A total of 89,294 cases were included in the study. Eighty thousand one hundred and fifty (89.8%) were from urban settings and 9144 (9.2%) were from rural settings. Patients from rural settings were older (52 vs. 50 years, p < 0.001) and had smaller nodules (p < 0.001). On adjusted analysis, patients in rural areas were less likely to undergo TT (adjusted odds ratio 0.81, confidence interval [CI] 0.76-0.87). Before the 2015 guidelines, patients in urban settings had a 24% higher odds of undergoing TT compared with those in rural settings (odds ratio 1.24, CI 1.16-1.32, p < 0.001). There was no difference in the proportions of TT and TL based on setting following guideline implementation (p = 0.185). Conclusions: The 2015 ATA guidelines led to a change in overall practice in surgical management of PTC toward increasing TL. While urban and rural practice variation existed before 2015, both settings had an increase in TL following the guideline change, emphasizing the importance of clinical practice guidelines to ensure best practice in both rural and urban settings.


Assuntos
Neoplasias da Glândula Tireoide , Humanos , Câncer Papilífero da Tireoide/cirurgia , Neoplasias da Glândula Tireoide/cirurgia , Neoplasias da Glândula Tireoide/patologia , Estudos Retrospectivos , Tireoidectomia/métodos
19.
AACE Clin Case Rep ; 9(2): 44-47, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37056419

RESUMO

Background: /Objective: Little is known about the epidemiology, clinical presentation, and diagnosis of thyroid mucosa-associated lymphoid tissue (MALT) lymphoma. Case Report: We report the case of a 67-year-old woman who presented with an intermediate-risk thyroid nodule 8 years after diagnosis of hypothyroidism due to Hashimoto's. She was found to have a well-circumscribed hypoechoic 2.6-cm right-sided thyroid nodule lobe, which was biopsied and returned atypia of undetermined significance with positive KRAS mutation on the Thyroseq V3 Genomic Classifier. She subsequently underwent right thyroid lobectomy and was found to have thyroid MALT lymphoma on histopathological sections. After the surgery, she was referred to oncology for further management of the thyroid MALT lymphoma. A positron emission tomography/computed tomography scan was performed for complete staging and revealed diffuse fluorodeoxyglucose uptake in the residual left thyroid lobe without evidence of extrathyroidal involvement. Her case was discussed in a multidisciplinary fashion among oncology, endocrine surgery, and endocrinology. Given the positron emission tomography scan findings, she ultimately underwent completion thyroidectomy 4 months after the initial surgery to rule out residual disease. The patient tolerated the operation well without complication. Discussion: Our report adds to the literature that Hashimoto's thyroiditis may be a risk factor of thyroid MALT lymphoma. Localized thyroid MALT lymphoma may be managed with total thyroidectomy. Conclusion: We report a patient with localized thyroid MALT lymphoma who presented with an intermediate-risk nodule with positive KRAS mutation and was treated with total thyroidectomy.

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