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1.
Helminthologia ; 61(2): 201-204, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-39040802

RESUMO

A 2-year-old Kunekune sow was submitted for necropsy following death after peritonitis and sepsis. In addition to peritonitis, numerous fluid-filled cysts were identified in the mesentery and hepatic parenchyma, which contained an approximately 1 cm metacestode (cysticercosis). Subsequent molecular characterization confirmed the presence of Taenia hydatigena, a non-zoonotic cestode species. To our knowledge, visceral cysticercosis caused by T. hydatigena has not been previously documented in Kunekune pigs. Taenia solium is a differential diagnosis of public health importance in cases of cysticercosis. Although Taenia solium is not commonly reported nor endemic in the United States, its zoonotic potential warrants consideration in the initial diagnostic assessment. Clinicians should be aware of the presence of T. hydatigena in its definitive and intermediate hosts.

2.
J Clin Aesthet Dermatol ; 16(6): 46-49, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-37361367

RESUMO

Objective: Research exists examining sunburn risks, sun protective behaviors, and interventions among pool lifeguards; however, ocean lifeguard research is limited. This study aimed to determine sunburn prevalence and associations between sunburn with photoprotective attitudes and habits among Florida ocean lifeguards. Methods: A cross-sectional study was electronically administered in 2021 to ocean lifeguards using sun protection questions. Recruitment occurred through three lifeguard agencies. The frequency of self-reported sunburns from the prior season and the opinions and practices related to photoprotection and tanning were obtained. Results: Complete data were obtained from 77 (37%) of 207 lifeguards who served during the 2020 swimming season (mean [SD] age, 22.9 [8.31] years; 40 male (52.0%) and 37 female (48.0%)). Sunburn was common with only four (5.2%) lifeguards reporting no sunburn. In total, 26 (33.8%) reported five or more sunburns. The median sunburn frequency was three. Reporting three or more sunburns was positively associated with being a teenager (16 to 18 years) (aOR: 14.9, 95% CI 3.5 to 64.2) or young adult (19 to 23 years) (aOR: 6.4, 95% CI 1.6 to 25.2) and having a neutral opinion regarding sunscreen effectiveness (aOR: 4.5, 95% CI 1.1 to 18.7) in logistic regression models. Limitations: Self-reported sunburns were recalled and not clinically evaluated. Recall, participation, and social desirability biases may have been present. Conclusion: Ocean lifeguards reported appreciably high rates of sunburn, especially younger lifeguards. Increased photoprotection education, engineering controls, and research are warranted for this occupational group.

3.
Ann R Coll Surg Engl ; 105(3): 196-202, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-35617051

RESUMO

INTRODUCTION: Isolated volar dislocations of the distal radioulnar joint are reported as rare. We observed three such cases over a 12-month period. Literature to date consists of multiple case reports and case series with no structured reviews. There is debate as to incidence, mechanism, investigation, treatment and prognosis. METHODS: A case series and formal systematic review was performed. This included an analysis of the demographics, mechanism, presentation, investigation, treatment and outcome of the cases identified from the wider published series. FINDINGS: In total 99 cases of this injury were identified from 59 papers, with a further 9 cases having an associated ulna styloid fracture. CONCLUSIONS: This is a rare injury, representing up to 0.02% of all bony injuries, which is diagnosed late in 36% of cases. Inability to obtain a true lateral radiograph may contribute to the diagnosis being missed. Computed tomography scans are useful in suspected cases without radiographic confirmation. Acute cases are successfully treated with closed reduction in 78% of cases; however associated soft tissue injuries may need to be surgically addressed. Delayed presentation is more likely to require open surgery and preoperative MRI scans are indicated to aid surgical planning. Chronic instability rarely occurs and may need treatment with reconstruction or salvage. A good, subjective, result is reported in the majority of patients.


Assuntos
Luxações Articulares , Fraturas do Rádio , Fraturas da Ulna , Traumatismos do Punho , Humanos , Traumatismos do Punho/diagnóstico por imagem , Traumatismos do Punho/cirurgia , Luxações Articulares/diagnóstico por imagem , Luxações Articulares/cirurgia , Articulação do Punho/diagnóstico por imagem , Articulação do Punho/cirurgia , Fraturas da Ulna/diagnóstico por imagem , Fraturas da Ulna/cirurgia , Radiografia , Fraturas do Rádio/diagnóstico por imagem , Fraturas do Rádio/cirurgia
4.
J Vet Cardiol ; 42: 92-102, 2022 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-35863127

RESUMO

OBJECTIVE: To determine how frequently the current criteria for left ventricular enlargement in dogs misclassify healthy dogs as having left ventricular enlargement; to examine the effect of breed on diastolic left ventricular normalized dimensions (LVIDDN); to propose appropriate scaling exponents and reference limits for dogs. ANIMALS: Echocardiographic data from 1,124 healthy adult dogs, including 454 dogs weighing <20 kg. METHODS: We calculated power regression parameters (allometric scaling), including exponents and proportionality constants, for various subsets of the dogs (all dogs, dogs < 20 kg, generic dogs, and individual breeds with >10 observations) and derived upper reference limits for LVIDDN. We determined the proportions of dogs that would be identified as having left ventricular enlargement with each regression model compared to previously published reference limits or guidelines. We then identified breeds failing to conform to generic dog models. RESULTS: The American College of Veterinary Internal Medicine-recommended scaling exponent (0.294) and criterion for identifying left ventricular enlargement (1.7) identified >10% of apparently healthy dogs as having left ventricular enlargement, with specific breeds being misclassified up to 50% of the time. However, with a scaling exponent of 0.33, a constant of 1.7 represented a normal left ventricular size in 97.5% of healthy dogs in both generic and non-conforming breeds. CONCLUSIONS: Left ventricular internal dimension in diastole normalized to bodyweight is breed-dependent. A constant of 1.7 with a scaling exponent of 0.294 does not always represent ventricular enlargement; a scaling exponent of 0.33, with breed-specific reference limits for breeds that fail to conform to allometric models of generic dogs, reduces the misclassification of healthy dogs as having left ventricular enlargement.


Assuntos
Doenças do Cão , Doenças das Valvas Cardíacas , Animais , Doenças do Cão/diagnóstico por imagem , Cães , Ecocardiografia/veterinária , Doenças das Valvas Cardíacas/veterinária , Humanos , Hipertrofia Ventricular Esquerda/diagnóstico por imagem , Hipertrofia Ventricular Esquerda/veterinária , Valva Mitral/diagnóstico por imagem , Valores de Referência
5.
Eur Respir J ; 60(5)2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-35728977

RESUMO

BACKGROUND: Bronchiectasis can result from infectious, genetic, immunological and allergic causes. 60-80% of cases are idiopathic, but a well-recognised genetic cause is the motile ciliopathy, primary ciliary dyskinesia (PCD). Diagnosis of PCD has management implications including addressing comorbidities, implementing genetic and fertility counselling and future access to PCD-specific treatments. Diagnostic testing can be complex; however, PCD genetic testing is moving rapidly from research into clinical diagnostics and would confirm the cause of bronchiectasis. METHODS: This observational study used genetic data from severe bronchiectasis patients recruited to the UK 100,000 Genomes Project and patients referred for gene panel testing within a tertiary respiratory hospital. Patients referred for genetic testing due to clinical suspicion of PCD were excluded from both analyses. Data were accessed from the British Thoracic Society audit, to investigate whether motile ciliopathies are underdiagnosed in people with bronchiectasis in the UK. RESULTS: Pathogenic or likely pathogenic variants were identified in motile ciliopathy genes in 17 (12%) out of 142 individuals by whole-genome sequencing. Similarly, in a single centre with access to pathological diagnostic facilities, 5-10% of patients received a PCD diagnosis by gene panel, often linked to normal/inconclusive nasal nitric oxide and cilia functional test results. In 4898 audited patients with bronchiectasis, <2% were tested for PCD and <1% received genetic testing. CONCLUSIONS: PCD is underdiagnosed as a cause of bronchiectasis. Increased uptake of genetic testing may help to identify bronchiectasis due to motile ciliopathies and ensure appropriate management.


Assuntos
Bronquiectasia , Transtornos da Motilidade Ciliar , Ciliopatias , Síndrome de Kartagener , Humanos , Mutação , Bronquiectasia/diagnóstico , Bronquiectasia/genética , Cílios , Transtornos da Motilidade Ciliar/diagnóstico , Transtornos da Motilidade Ciliar/genética , Ciliopatias/complicações , Síndrome de Kartagener/diagnóstico , Síndrome de Kartagener/genética
7.
Ann Med ; 54(1): 1202-1211, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-35521812

RESUMO

The East Africa Consortium was formed to study the epidemiology of human papillomavirus (HPV) infections and cervical cancer and the influence of human immunodeficiency virus (HIV) infection on HPV and cervical cancer, and to encourage collaborations between researchers in North America and East African countries. To date, studies have led to a better understanding of the influence of HIV infection on the detection and persistence of oncogenic HPV, the effects of dietary aflatoxin on the persistence of HPV, the benefits of antiretroviral therapy on HPV persistence, and the differences in HPV detections among HIV-infected and HIV-uninfected women undergoing treatment for cervical dysplasia by either cryotherapy or LEEP. It will now be determined how HPV testing fits into cervical cancer screening programs in Kenya and Uganda, how aflatoxin influences immunological control of HIV, how HPV alters certain genes involved in the growth of tumours in HIV-infected women. Although there have been challenges in performing this research, with time, this work should help to reduce the burden of cervical cancer and other cancers related to HIV infection in people living in sub-Saharan Africa, as well as optimized processes to better facilitate research as well as patient autonomy and safety. KEY MESSAGESThe East Africa Consortium was formed to study the epidemiology of human papillomavirus (HPV) infections and cervical cancer and the influence of human immunodeficiency virus (HIV) infection on HPV and cervical cancer.Collaborations have been established between researchers in North America and East African countries for these studies.Studies have led to a better understanding of the influence of HIV infection on the detection and persistence of oncogenic HPV, the effects of dietary aflatoxin on HPV detection, the benefits of antiretroviral therapy on HPV persistence, and the differences in HPV detections among HIV-infected and HIV-uninfected women undergoing treatment for cervical dysplasia by either cryotherapy or LEEP.


Assuntos
Aflatoxinas , Alphapapillomavirus , Infecções por HIV , Infecções por Papillomavirus , Displasia do Colo do Útero , Neoplasias do Colo do Útero , Detecção Precoce de Câncer , Feminino , Infecções por HIV/complicações , Infecções por HIV/tratamento farmacológico , Infecções por HIV/epidemiologia , Humanos , Papillomaviridae/genética , Infecções por Papillomavirus/complicações , Infecções por Papillomavirus/epidemiologia , Neoplasias do Colo do Útero/epidemiologia , Displasia do Colo do Útero/epidemiologia
8.
AJNR Am J Neuroradiol ; 43(3): 455-461, 2022 03.
Artigo em Inglês | MEDLINE | ID: mdl-35210278

RESUMO

BACKGROUND AND PURPOSE: Selumetinib is a promising MAP (mitogen-activated protein) kinase (MEK) 1/2 inhibitor treatment for pediatric low-grade gliomas. We hypothesized that MR imaging-derived ADC histogram metrics would be associated with survival and response to treatment with selumetinib. MATERIALS AND METHODS: Children with recurrent, refractory, or progressive pediatric low-grade gliomas who had World Health Organization grade I pilocytic astrocytoma with KIAA1549-BRAF fusion or the BRAF V600E mutation (stratum 1), neurofibromatosis type 1-associated pediatric low-grade gliomas (stratum 3), or sporadic non-neurofibromatosis type 1 optic pathway and hypothalamic glioma (OPHG) (stratum 4) were treated with selumetinib for up to 2 years. Quantitative ADC histogram metrics were analyzed for total and enhancing tumor volumes at baseline and during treatment. RESULTS: Each stratum comprised 25 patients. Stratum 1 responders showed lower values of SD of baseline ADC_total as well as a larger decrease with time on treatment in ADC_total mean, mode, and median compared with nonresponders. Stratum 3 responders showed a greater longitudinal decrease in ADC_total. In stratum 4, higher baseline ADC_total skewness and kurtosis were associated with shorter progression-free survival. When all 3 strata were combined, responders showed a greater decrease with time in ADC_total mode and median. Compared with sporadic OPHG, neurofibromatosis type 1-associated OPHG had lower values of ADC_total mean, mode, and median as well as ADC_enhancement mean and median and higher values of ADC_total skewness and kurtosis at baseline. The longitudinal decrease in ADC_total median during treatment was significantly greater in sporadic OPHG compared with neurofibromatosis type 1-associated OPHG. CONCLUSIONS: ADC histogram metrics are associated with progression-free survival and response to treatment with selumetinib in pediatric low-grade gliomas.


Assuntos
Neoplasias Encefálicas , Glioma , Neurofibromatose 1 , Benzimidazóis , Neoplasias Encefálicas/diagnóstico por imagem , Neoplasias Encefálicas/tratamento farmacológico , Neoplasias Encefálicas/genética , Criança , Imagem de Difusão por Ressonância Magnética , Glioma/diagnóstico por imagem , Glioma/tratamento farmacológico , Glioma/genética , Humanos , Neurofibromatose 1/diagnóstico por imagem , Neurofibromatose 1/tratamento farmacológico , Proteínas Proto-Oncogênicas B-raf
9.
Ann Oncol ; 33(4): 426-433, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-35074424

RESUMO

BACKGROUND: Tumor-only sequencing, implemented for the identification of somatic variants, is oftentimes used for the detection of actionable germline variants. We sought to determine whether tumor-only sequencing assays are suitable for detection of actionable germline variants, given their importance for the delivery of targeted therapies and risk-reducing measures. PATIENTS AND METHODS: The detection of germline variants affecting moderate- and high-penetrance cancer susceptibility genes (CSGs) by tumor-only sequencing was compared to clinical germline testing in 21 333 cancer patients who underwent tumor and germline testing using the Food and Drug Administration (FDA)-authorized Memorial Sloan Kettering-Integrated Mutation Profiling of Actionable Targets (MSK-IMPACT) assay. Seven homologous recombination deficiency (HRD), two DNA damage response (DDR) and four mismatch repair (MMR) genes, as well as NF1, RB1 and TP53 were included in the analysis. FDA-authorized and New York State Department of Health-approved sequencing methods for germline, tumor/normal and tumor-only sequencing assays and analytical pipelines were employed. RESULTS: In patients who underwent tumor and germline sequencing, as compared to clinical genetic testing, tumor-only sequencing failed to detect 10.5% of clinically actionable pathogenic germline variants in CSGs, including 18.8%, 12.8% and 7.3% of germline variants in MMR, DDR and HRD genes, respectively. The sensitivity for detection of pathogenic germline variants by tumor-only sequencing was 89.5%. Whilst the vast majority of pathogenic germline exonic single-nucleotide variants (SNVs) and small indels were detected by tumor-only sequencing, large percentages of germline copy number variants, intronic variants and repetitive element insertions were not detected. CONCLUSIONS: Tumor-only sequencing is adequate for the detection of clinically actionable germline variants, particularly for SNVs and small indels; however, a small subset of alterations affecting HRD, DDR and MMR genes may not be detected optimally. Therefore, for high-risk patients with negative tumor-only sequencing results, clinical genetic testing could be considered given the impact of these variants on therapy and genetic counseling.


Assuntos
Mutação em Linhagem Germinativa , Neoplasias , Predisposição Genética para Doença , Testes Genéticos/métodos , Células Germinativas/patologia , Humanos , Neoplasias/patologia
10.
Sci Rep ; 11(1): 22654, 2021 11 22.
Artigo em Inglês | MEDLINE | ID: mdl-34811399

RESUMO

We recently found that nuclear receptor coactivator 7 (Ncoa7) and Oxr1 interact with the proton-pumping V-ATPase. Ncoa7 and Oxr1 belong to a group of proteins playing a role in the oxidative stress response, that contain the conserved "TLDc" domain. Here we asked if the three other proteins in this family, i.e., Tbc1d24, Tldc1 and Tldc2 also interact with the V-ATPase and if the TLDc domains are involved in all these interactions. By co-immunoprecipitation, endogenous kidney Tbc1d24 (and Ncoa7 and Oxr1) and overexpressed Tldc1 and Tldc2, all interacted with the V-ATPase. In addition, purified TLDc domains of Ncoa7, Oxr1 and Tldc2 (but not Tbc1d24 or Tldc1) interacted with V-ATPase in GST pull-downs. At the amino acid level, point mutations G815A, G845A and G896A in conserved regions of the Ncoa7 TLDc domain abolished interaction with the V-ATPase, and S817A, L926A and E938A mutations resulted in decreased interaction. Furthermore, poly-E motifs upstream of the TLDc domain in Ncoa7 and Tldc2 show a (nonsignificant) trend towards enhancing the interaction with V-ATPase. Our principal finding is that all five members of the TLDc family of proteins interact with the V-ATPase. We conclude that the TLDc motif defines a new class of V-ATPase interacting regulatory proteins.


Assuntos
ATPases Vacuolares Próton-Translocadoras/química , Adenosina Trifosfatases/metabolismo , Motivos de Aminoácidos , Animais , Proteínas Ativadoras de GTPase/química , Células HEK293 , Humanos , Íons/química , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Transgênicos , Microscopia de Fluorescência , Proteínas Mitocondriais/química , Mutação , Coativadores de Receptor Nuclear/química , Coativadores de Receptor Nuclear/metabolismo , Estresse Oxidativo , Mutação Puntual , Domínios Proteicos , RNA Interferente Pequeno/metabolismo , Termodinâmica , ATPases Vacuolares Próton-Translocadoras/classificação , ATPases Vacuolares Próton-Translocadoras/metabolismo , Peixe-Zebra
11.
Ann Med Surg (Lond) ; 65: 102238, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-33898030

RESUMO

BACKGROUND: Bowel disease is a significant cause of significant morbidity and mortality around the world. Though colorectal cancer is a major cause for concern, there are a variety of other conditions which are chronic, debilitating and/or socially embarrassing. While the internet provides excellent resources, there is often conflicting and confusing material of doubtful veracity. There is pressing need for trainees and patients/carers to be able to access reliable resources whenever and wherever they are. AIM: To create an integrated, interactive platform providing reliable information on aspects of bowel disease for patients while addressing educational needs of surgical trainees and other healthcare professionals. APPROACH: Since 2006, we have progressed from leaflets, diagrammatic booklets to DVDs and then downloadable applications all of which, though very successful, had significant limitations.Trainees struggle with balancing their educational needs with their service commitments. This online resource, www.colorectaleducation.com provides an opportunity to view detailed operative training videos on the go. The website also hosts detailed chapterised information videos for patients, care pathway videos and patient experiences. The modular design of the website allows for ease of updating and sequential expansion. The initial emphasis has been on colorectal cancer and the site is being gradually expanded to include a variety of other conditions. RESULTS: The website gained widespread popularity with Google Analytics revealing steadily rising global hit rate with very low bounce rate for both sections. Structured feedback showed 96% satisfaction on both patient and professional sections. CONCLUSION: On-demand information became the norm with the use of smartphones/tablets. This website provides patients, surgical trainees and healthcare professionals access to information and education in clear reliable format, anywhere in the world. This is particularly relevant now as pandemic reduced opportunities for face to face patients consultations as well as for learners with educators.

12.
Appl Opt ; 59(31): 9884-9895, 2020 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-33175829

RESUMO

Precise mode matching is needed to maximize performance in coupled cavity interferometers such as Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO). In this paper, we present a new mode matching sensing scheme, to the best of our knowledge, that uses a single radio-frequency higher-order-mode sideband and single-element photodiodes. It is first-order insensitive to misalignment and can serve as an error signal in a closed loop control system for a set of mode matching actuators. We also discuss how it may be implemented in Advanced LIGO. The proposed mode matching error signal has been successfully demonstrated on a tabletop experiment, where the error signal increased the mode matching of a beam to a cavity to 99.9%.

13.
Am J Physiol Cell Physiol ; 319(6): C997-C1010, 2020 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-32991210

RESUMO

Successful sperm maturation and storage rely on a unique immunological balance that protects the male reproductive organs from invading pathogens and spermatozoa from a destructive autoimmune response. We previously characterized one subset of mononuclear phagocytes (MPs) in the murine epididymis, CX3CR1+ cells, emphasizing their different functional properties. This population partially overlaps with another subset of understudied heterogeneous MPs, the CD11c+ cells. In the present study, we analyzed the CD11c+ MPs for their immune phenotype, morphology, and antigen capturing and presenting abilities. Epididymides from CD11c-EYFP mice, which express enhanced yellow fluorescent protein (EYFP) in CD11c+ MPs, were divided into initial segment (IS), caput/corpus, and cauda regions. Flow cytometry analysis showed that CD11c+ MPs with a macrophage phenotype (CD64+ and F4/80+) were the most abundant in the IS, whereas those with a dendritic cell signature [CD64- major histocompatibility complex class II (MHCII)+] were more frequent in the cauda. Immunofluorescence revealed morphological and phenotypic differences between CD11c+ MPs in the regions examined. To assess the ability of CD11c+ cells to take up antigens, CD11c-EYFP mice were injected intravenously with ovalbumin. In the IS, MPs expressing macrophage markers were most active in taking up the antigens. A functional antigen-presenting coculture study was performed, whereby CD4+ T cells were activated after ovalbumin presentation by CD11c+ epididymal MPs. The results demonstrated that CD11c+ MPs in all regions were capable of capturing and presenting antigens. Together, this study defines a marked regional variation in epididymal antigen-presenting cells that could help us understand fertility and contraception but also has larger implications in inflammation and disease pathology.


Assuntos
Antígeno CD11c/metabolismo , Epididimo/metabolismo , Fagócitos/metabolismo , Animais , Biomarcadores/metabolismo , Linfócitos T CD4-Positivos/metabolismo , Células Dendríticas/metabolismo , Fertilidade/fisiologia , Macrófagos/metabolismo , Masculino , Camundongos , Camundongos Transgênicos , Fenótipo , Espermatozoides/metabolismo
14.
AJNR Am J Neuroradiol ; 41(5): 874-881, 2020 05.
Artigo em Inglês | MEDLINE | ID: mdl-32381545

RESUMO

BACKGROUND AND PURPOSE: Recent advances in molecular techniques have characterized distinct subtypes of diffuse intrinsic pontine gliomas. Our aim was the identification of MR imaging correlates of these subtypes. MATERIALS AND METHODS: Initial MRIs from subjects with diffuse intrinsic pontine gliomas recruited for a prospective clinical trial before treatment were analyzed. Retrospective imaging analyses included FLAIR/T2 tumor volume, tumor volume enhancing, the presence of cyst and/or necrosis, median, mean, mode, skewness, kurtosis of ADC tumor volume based on FLAIR, and enhancement at baseline. Molecular subgroups based on EGFR and MGMT mutations were established. Histone mutations were also determined (H3F3A, HIST1H3B, HIST1H3C). Univariate Cox proportional hazards regression was used to test the association of imaging predictors with overall and progression-free survival. Wilcoxon rank sum, Kruskal-Wallis, and Fisher exact tests were used to compare imaging measures among groups. RESULTS: Fifty patients had biopsy and MR imaging. The median age at trial registration was 6 years (range, 3.3-17.5 years); 52% were female. On the basis of immunohistochemical results, 48 patients were assigned to 1 of 4 subgroups: 28 in MGMT-/epidermal growth factor receptor (EGFR)-, 14 in MGMT-/EGFR+, 3 in MGMT+/EGFR-, and 3 in MGMT+/EGFR+. Twenty-three patients had histone mutations in H3F3A, 8 in HIST1H3B, and 3 in HIST1H3C. Enhancing tumor volume was near-significantly different across molecular subgroups (P = .04), after accounting for the false discovery rate. Tumor volume enhancing, median, mode, skewness, and kurtosis ADC T2-FLAIR/T2 were significantly different (P ≤ .048) between patients with H3F3A and HIST1H3B/C mutations. CONCLUSIONS: MR imaging features including enhancement and ADC histogram parameters are correlated with molecular subgroups and mutations in children with diffuse intrinsic pontine gliomas.


Assuntos
Neoplasias do Tronco Encefálico/diagnóstico por imagem , Neoplasias do Tronco Encefálico/genética , Glioma Pontino Intrínseco Difuso/diagnóstico por imagem , Glioma Pontino Intrínseco Difuso/genética , Neuroimagem/métodos , Adolescente , Criança , Pré-Escolar , Análise Mutacional de DNA/métodos , Receptores ErbB/genética , Feminino , Histonas/genética , Humanos , Imageamento por Ressonância Magnética/métodos , Masculino , Mutação , Estudos Prospectivos , Estudos Retrospectivos
15.
AJNR Am J Neuroradiol ; 41(4): 718-724, 2020 04.
Artigo em Inglês | MEDLINE | ID: mdl-32241771

RESUMO

BACKGROUND AND PURPOSE: Diffuse intrinsic pontine glioma is a lethal childhood brain cancer with dismal prognosis and MR imaging is the primary methodology used for diagnosis and monitoring. Our aim was to determine whether advanced diffusion, perfusion, and permeability MR imaging metrics predict survival and pseudoprogression in children with newly diagnosed diffuse intrinsic pontine glioma. MATERIALS AND METHODS: A clinical trial using the poly (adenosine diphosphate ribose) polymerase (PARP) inhibitor veliparib concurrently with radiation therapy, followed by maintenance therapy with veliparib + temozolomide, in children with diffuse intrinsic pontine glioma was conducted by the Pediatric Brain Tumor Consortium. Standard MR imaging, DWI, dynamic contrast-enhanced perfusion, and DSC perfusion were performed at baseline and approximately every 2 months throughout treatment. ADC histogram metrics of T2-weighted FLAIR and enhancing tumor volume, dynamic contrast-enhanced permeability metrics for enhancing tumors, and tumor relative CBV from DSC perfusion MR imaging were calculated. Baseline values, post-radiation therapy changes, and longitudinal trends for all metrics were evaluated for associations with survival and pseudoprogression. RESULTS: Fifty children were evaluable for survival analyses. Higher baseline relative CBV was associated with shorter progression-free survival (P = .02, Q = 0.089) and overall survival (P = .006, Q = 0.055). Associations of higher baseline mean transfer constant from the blood plasma into the extravascular extracellular space with shorter progression-free survival (P = .03, Q = 0.105) and overall survival (P = .03, Q = 0.102) trended toward significance. An increase in relative CBV with time was associated with shorter progression-free survival (P < .001, Q < 0.001) and overall survival (P = .004, Q = 0.043). Associations of longitudinal mean extravascular extracellular volume fraction with progression-free survival (P = .03, Q = 0.104) and overall survival (P = .03, Q = 0.105) and maximum transfer constant from the blood plasma into the extravascular extracellular space with progression-free survival (P = .03, Q = 0.102) trended toward significance. Greater increases with time were associated with worse outcomes. True radiologic progression showed greater post-radiation therapy decreases in mode_ADC_FLAIR compared with pseudoprogression (means, -268.15 versus -26.11, P = .01.) CONCLUSIONS: ADC histogram, perfusion, and permeability MR imaging metrics in diffuse intrinsic pontine glioma are useful in predicting survival and pseudoprogression.


Assuntos
Neoplasias do Tronco Encefálico/diagnóstico por imagem , Glioma Pontino Intrínseco Difuso/diagnóstico por imagem , Neuroimagem/métodos , Neuroimagem/normas , Adolescente , Algoritmos , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Benchmarking , Benzimidazóis/administração & dosagem , Neoplasias do Tronco Encefálico/mortalidade , Neoplasias do Tronco Encefálico/terapia , Quimiorradioterapia/métodos , Criança , Glioma Pontino Intrínseco Difuso/mortalidade , Glioma Pontino Intrínseco Difuso/terapia , Progressão da Doença , Feminino , Humanos , Interpretação de Imagem Assistida por Computador/métodos , Interpretação de Imagem Assistida por Computador/normas , Imageamento por Ressonância Magnética/métodos , Masculino , Imagem de Perfusão/métodos , Prognóstico , Estudos Retrospectivos , Análise de Sobrevida , Temozolomida/administração & dosagem
16.
Cardiovasc Intervent Radiol ; 43(2): 246-253, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-31646375

RESUMO

PURPOSE: Peptide receptor radionuclide therapy (PRRT) and radioembolization are increasingly used in neuroendocrine neoplasms patients. However, concerns have been raised on cumulative hepatotoxicity. The aim of this sub-analysis was to investigate hepatotoxicity of yttrium-90 resin microspheres radioembolization in patients who were previously treated with PRRT. METHODS: Patients treated with radioembolization after systemic radionuclide treatment were retrospectively analysed. Imaging response according to response evaluation criteria in solid tumours (RECIST) v1.1 and clinical response after 3 months were collected. Clinical, biochemical and haematological toxicities according to common terminology criteria for adverse events (CTCAE) v4.03 were also collected. Specifics on prior PRRT, subsequent radioembolization treatments, treatments after radioembolization and overall survival (OS) were collected. RESULTS: Forty-four patients were included, who underwent a total of 58 radioembolization procedures, of which 55% whole liver treatments, at a median of 353 days after prior PRRT. According to RECIST 1.1, an objective response rate of 16% and disease control rate of 91% were found after 3 months. Clinical response was seen in 65% (15/23) of symptomatic patients after 3 months. Within 3 months, clinical toxicities occurred in 26%. Biochemical and haematological toxicities CTCAE grade 3-4 occurred in ≤ 10%, apart from lymphocytopenia (42%). Radioembolization-related complications occurred in 5% and fatal radioembolization-induced liver disease in 2% (one patient). A median OS of 3.5 years [95% confidence interval 1.8-5.1 years] after radioembolization for the entire study population was found. CONCLUSION: Radioembolization after systemic radionuclide treatments is safe, and the occurrence of radioembolization-induced liver disease is rare. LEVEL OF EVIDENCE: 4, case series.


Assuntos
Braquiterapia/métodos , Neoplasias Hepáticas/radioterapia , Tumores Neuroendócrinos/radioterapia , Radioisótopos de Ítrio/uso terapêutico , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Microesferas , Pessoa de Meia-Idade , Tumores Neuroendócrinos/secundário , Receptores de Peptídeos/uso terapêutico , Critérios de Avaliação de Resposta em Tumores Sólidos , Estudos Retrospectivos , Resultado do Tratamento
18.
Vet J ; 250: 71-78, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31383423

RESUMO

In the face of increasing recognition and interest in treating chronic pain in companion animals, we struggle with a lack of therapeutic options. A significant barrier to the development of new therapeutics, or the critical evaluation of current therapies, is our inability to accurately measure chronic pain and its impact on companion animals. Over the last 20 years, much progress has been made in developing methods to measure chronic pain via subjective and objective methods - particularly in owner assessment tools and measurements of limb use and activity. Most work has been focused on chronic joint pain conditions, but there has been relatively little work in other areas of chronic pain, such as neuropathic and cancer pain. Although progress has been made, there is a considerable interest in improving our assessment of chronic pain, as evidenced by the multiple disciplines across industry, academia, and clinical practice from the veterinary and human medical fields that participated in the Pain in Animals Workshop held at the National Institutes of Health in 2017. This review is one product of that meeting and summarizes the current state of knowledge surrounding the measurement of chronic pain (musculoskeletal, cancer, neuropathic), and its impact, in cats and dogs.


Assuntos
Doenças do Gato/patologia , Dor Crônica/veterinária , Doenças do Cão/patologia , Medição da Dor/veterinária , Animais , Gatos , Dor Crônica/patologia , Cães
19.
Nutr Metab Cardiovasc Dis ; 29(5): 518-526, 2019 05.
Artigo em Inglês | MEDLINE | ID: mdl-30935764

RESUMO

BACKGROUND AND AIMS: Gastric bypass is known to have larger effects on weight and metabolism than gastric banding. However, scarce data exist as to whether the differences are translated into differential risks of cardiovascular disease (CVD)-related morbidities. The objective was to examine whether adults with obesity and CVD who underwent gastric bypass have a lower rate of acute care use (emergency department [ED] visit or unplanned hospitalization) for CVD than those with gastric banding. METHODS AND RESULTS: We performed a comparative effectiveness study of gastric bypass versus banding among adults with obesity and CVD who underwent either surgery, using population-based [ED] and inpatient samples in California, Florida, and Nebraska from 2005 through 2011. The primary outcome was acute care use for CVD during a two-year postoperative period. We constructed negative binomial regression models to compare the event rate during sequential 6-month periods, using gastric banding group as the reference. We identified 11,229 adults with obesity and CVD who underwent gastric bypass and 3896 adults who had gastric banding. Patients with gastric bypass had significantly lower rate of the outcome compared to those with banding in the 7-12 months postoperative period (adjusted rate ratio [aRR] 0.77; 95% confidence interval [CI], 0.61-0.98; P = 0.03). The significant reduction in the rate persisted during 13-18 months (aRR 0.71; 95% CI, 0.57-0.90; P = 0.005) and 19-24 months (aRR 0.66; 95% CI, 0.52-0.82; P < 0.001) after bariatric surgery. CONCLUSION: In this population-based comparative effectiveness study of adults with obesity and CVD, the rate of acute care use for CVD was lower after gastric bypass compared to gastric banding.


Assuntos
Doenças Cardiovasculares/terapia , Derivação Gástrica , Gastroplastia , Obesidade/cirurgia , Adulto , Doenças Cardiovasculares/diagnóstico , Doenças Cardiovasculares/epidemiologia , Pesquisa Comparativa da Efetividade , Feminino , Derivação Gástrica/efeitos adversos , Gastroplastia/efeitos adversos , Humanos , Masculino , Pessoa de Meia-Idade , Obesidade/diagnóstico , Obesidade/epidemiologia , Fatores de Risco , Fatores de Tempo , Resultado do Tratamento , Estados Unidos/epidemiologia
20.
BMC Infect Dis ; 19(1): 352, 2019 Apr 27.
Artigo em Inglês | MEDLINE | ID: mdl-31029097

RESUMO

BACKGROUND: Cervical cancer is caused by oncogenic human papillomaviruses (HPV) and is one of the most common malignancies in women living in sub-Saharan Africa. Women infected with the human immunodeficiency virus (HIV) have a higher incidence of cervical cancer, but the full impact on HPV detection is not well understood, and associations of biological and behavioral factors with oncogenic HPV detection have not been fully examined. Therefore, a study was initiated to investigate factors that are associated with oncogenic HPV detection in Kenyan women. METHODS: Women without cervical dysplasia were enrolled in a longitudinal study. Data from enrollment are presented as a cross-sectional analysis. Demographic and behavioral data was collected, and HPV typing was performed on cervical swabs. HIV-uninfected women (n = 105) and HIV-infected women (n = 115) were compared for demographic and behavioral characteristics using t-tests, Chi-square tests, Wilcoxon sum rank tests or Fisher's exact tests, and for HPV detection using logistic regression or negative binomial models adjusted for demographic and behavioral characteristics using SAS 9.4 software. RESULTS: Compared to HIV-uninfected women, HIV-infected women were older, had more lifetime sexual partners, were less likely to be married, were more likely to regularly use condoms, and were more likely to have detection of HPV 16, other oncogenic HPV types, and multiple oncogenic types. In addition to HIV, more lifetime sexual partners was associated with a higher number of oncogenic HPV types (aIRR 1.007, 95% CI 1.007-1.012). Greater travel distance to the clinic was associated with increased HPV detection (aOR for detection of ≥ 2 HPV types: 3.212, 95% CI 1.206-8.552). Older age (aOR for HPV 16 detection: 0.871, 95% CI 0.764-0.993) and more lifetime pregnancies (aOR for detection of oncogenic HPV types: 0.706, 95% CI, 0.565-0.883) were associated with reduced detection. CONCLUSION: HIV infection, more lifetime sexual partners, and greater distance to health-care were associated with a higher risk of oncogenic HPV detection, in spite of ART use in those who were HIV-infected. Counseling of women about sexual practices, improved access to health-care facilities, and vaccination against HPV are all potentially important in reducing oncogenic HPV infections.


Assuntos
Infecções por HIV/patologia , Infecções por Papillomavirus/diagnóstico , Adulto , Fatores Etários , Estudos Transversais , Feminino , Genótipo , Infecções por HIV/epidemiologia , Papillomavirus Humano 16/isolamento & purificação , Humanos , Quênia/epidemiologia , Modelos Logísticos , Estudos Longitudinais , Pessoa de Meia-Idade , Razão de Chances , Infecções por Papillomavirus/epidemiologia , Infecções por Papillomavirus/virologia , Fatores de Risco , Parceiros Sexuais , Vagina/virologia , Adulto Jovem
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