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1.
Plant Physiol ; 194(2): 958-981, 2024 Jan 31.
Artigo em Inglês | MEDLINE | ID: mdl-37801606

RESUMO

Diatoms (Bacillariophyceae) accumulate neutral storage lipids in lipid droplets during stress conditions, which can be rapidly degraded and recycled when optimal conditions resume. Since nutrient and light availability fluctuate in marine environments, storage lipid turnover is essential for diatom dominance of marine ecosystems. Diatoms have garnered attention for their potential to provide a sustainable source of omega-3 fatty acids. Several independent proteomic studies of lipid droplets isolated from the model oleaginous pennate diatom Phaeodactylum tricornutum have identified a previously uncharacterized protein with an acyl-CoA binding (ACB) domain, Phatrdraft_48778, here referred to as Phaeodactylum tricornutum acyl-CoA binding protein (PtACBP). We report the phenotypic effects of CRISPR-Cas9 targeted genome editing of PtACBP. ptacbp mutants were defective in lipid droplet and triacylglycerol degradation, as well as lipid and eicosapentaenoic acid synthesis, during recovery from nitrogen starvation. Transcription of genes responsible for peroxisomal ß-oxidation, triacylglycerol lipolysis, and eicosapentaenoic acid synthesis was inhibited. A lipid-binding assay using a synthetic ACB domain from PtACBP indicated preferential binding specificity toward certain polar lipids. PtACBP fused to eGFP displayed an endomembrane-like pattern, which surrounded the periphery of lipid droplets. PtACBP is likely responsible for intracellular acyl transport, affecting cell division, development, photosynthesis, and stress response. A deeper understanding of the molecular mechanisms governing storage lipid turnover will be crucial for developing diatoms and other microalgae as biotechnological cell factories.


Assuntos
Diatomáceas , Lipólise , Diatomáceas/metabolismo , Gotículas Lipídicas/metabolismo , Ecossistema , Ácido Eicosapentaenoico/metabolismo , Proteômica , Triglicerídeos/metabolismo
2.
Breast Cancer Res Treat ; 198(1): 31-41, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-36592233

RESUMO

PURPOSE: In the genomic era, more women with low-risk breast cancer will forego chemotherapy and rely on adjuvant endocrine therapy (AET) to prevent metastatic recurrence. However, some of these patients will unfortunately relapse. We sought to understand this outcome. Preliminary work suggested that early discontinuation of AET, also known as non-persistence, may play an important role. A retrospective analysis exploring factors related to our breast cancer patients' non-persistence with AET was performed. METHODS: Women who underwent Oncotype-DX® testing between 2011 and 2014 with minimum 5 years follow-up were included. 'Low risk' was defined as Oncotype score < 26. Outcomes of recurrence and persistence were determined by chart review. Patient, tumor and treatment factors were collected, and persistent versus non-persistent groups compared using multivariable ANOVA and Fisher Chi square exact test. RESULTS: We identified six cases of distant recurrence among low-risk patients with a median follow-up of 7.7 years. Among them, five of six patients (83%) were non-persistent with AET. The non-persistence rate in our cohort regardless of recurrence was 57/228 (25%). Non-persistent patients reported more severe side effects compared with persistent patients (p = 0.002) and were more likely to be offered a switch in endocrine therapy, rather than symptom-relief (p = 0.006). In contrast, persistent patients were 10.3 times more likely to have been offered symptom-alleviating medications compared with non-persistent patients (p < 0.001). A subset analysis revealed that patients who persisted with therapy had a higher Oncotype-DX® score than patients who discontinued early (p = 0.028). CONCLUSION: Metastatic recurrence in low-risk breast cancer patients may be primarily due to non-persistence with endocrine therapy. Further work is needed to optimize care for patients who struggle with side effects. To our knowledge, these are the first published data suggesting that Oncotype-DX® score may influence persistence with AET.


Assuntos
Neoplasias da Mama , Humanos , Feminino , Neoplasias da Mama/patologia , Estudos Retrospectivos , Risco , Genômica , Recidiva Local de Neoplasia/epidemiologia , Recidiva Local de Neoplasia/prevenção & controle , Recidiva Local de Neoplasia/tratamento farmacológico , Quimioterapia Adjuvante
3.
J Cutan Pathol ; 50(10): 903-912, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37430414

RESUMO

BACKGROUND: Immunohistochemistry-based protein biomarkers can provide useful prognostic information in cutaneous melanoma. The independent prognostic value of Ki-67 has been studied with variable results. PReferentially expressed Antigen in MElanoma (PRAME) immunohistochemistry is a useful new ancillary tool for distinguishing cutaneous nevi from melanoma; however, its prognostic value has not been well studied. We evaluated PRAME as a prognostic marker in cutaneous melanoma, compared to Ki-67. METHODS: We analyzed the immunohistochemical expression of PRAME and Ki-67 in 165 melanocytic lesions, including 92 primary melanomas, 19 metastatic melanomas, and 54 melanocytic nevi using tissue microarrays. PRAME immunostaining was scored based on the percentage of positive nuclei: 0 <1%, 1+ 1%-25%, 2+ 26%-50%, 3+ 51%-75%, and 4+ >75%. The percentage of Ki-67-positive tumor nuclei was used to calculate the proliferation index. RESULTS: PRAME and Ki-67 both showed significantly increased expression in melanomas compared to nevi (p < 0.0001 and p < 0.001, respectively). There was no significant difference in PRAME expression in primary versus metastatic melanomas. By contrast, the Ki-67 proliferation index was higher in metastatic melanoma than in primary melanoma (p = 0.013). Increased Ki-67 index correlated with ulceration (p < 0.001), increased Breslow depth (p = 0.001), and higher mitotic rate (p < 0.0001), whereas increased PRAME expression correlated with higher mitotic rate (p = 0.047) and Ki-67 index (p = 0.007). Increased Ki-67 index correlated with worse disease-specific survival in patients with primary melanoma (p < 0.001), but PRAME expression did not show prognostic significance in disease-specific survival (p = 0.63). In a multivariable analysis of patients with primary melanoma, tumor Breslow depth, ulceration, mitotic rate, and Ki-67 index were each independent predictors of disease-specific survival (p = 0.006, 0.02, 0.001, and 0.04, respectively); however, PRAME expression was not predictive of disease-specific survival (p = 0.64). CONCLUSION: Ki-67 is an independent prognostic marker; although increased PRAME expression correlates with the Ki-67 proliferation index and mitotic rate, PRAME is not an independent prognostic marker for cutaneous melanoma. PRAME and Ki-67 are useful ancillary tools for distinguishing benign from malignant melanocytic lesions.


Assuntos
Melanoma , Nevo , Neoplasias Cutâneas , Humanos , Melanoma/metabolismo , Neoplasias Cutâneas/patologia , Antígeno Ki-67 , Biomarcadores Tumorais/metabolismo , Nevo/patologia , Antígenos de Neoplasias/análise , Melanoma Maligno Cutâneo
4.
J Surg Res ; 270: 555-563, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-34826691

RESUMO

BACKGROUND: All-terrain vehicle (ATV) use is widespread, however, little is known about injury patterns and outcomes in geriatric patients. We hypothesized that geriatric patients would have distinct and more severe injuries than non-geriatric adults after ATV trauma. METHODS: A retrospective cohort study was performed using the National Trauma Databank comparing non-geriatric (18-64) and geriatric adults (≥65) presenting after ATV trauma at Level 1 and 2 trauma centers from 2011 to 2015. Demographic, admission, and outcomes data were collected, including injury severity score (ISS), abbreviated injury scale (AIS) score, discharge disposition, and mortality. We performed univariate statistical tests between cohorts and multiple logistic regression models to assess for risk factors associated with severe injury (ISS>15) and mortality. RESULTS: 23,568 ATV trauma patients were identified, of whom 1,954 (8.3%) were geriatric. Geriatric patients had higher rates of severe injury(29.2 v 22.5%,p<0.0001), and thoracic (55.2 v 37.8%,p<0.0001) and spine (31.5 v 26.0%,p<0.0001) injuries, but lower rates of abdominal injuries (14.6 v 17.9%,p<0.001) as compared to non-geriatric adults. Geriatric patients had overall lower head injury rates (39.2 v 42.1%,p=0.01), but more severe head injuries (AIS>3) (36.2 vs 30.2%,p<0.001). Helmet use was significantly lower in geriatric patients (12.0 v 22.8%,p<0.0001). On multivariate analysis age increased the odds for both severe injury (OR 1.50, 95% CI 1.31-1.72, p<0.0001) and mortality (OR 5.07, 95% CI 3.42-7.50, p<0.0001). CONCLUSIONS: While severe injury and mortality after ATV trauma occurred in all adults, geriatric adults suffered distinct injury patterns and were at greater risk for severe injury and mortality.


Assuntos
Veículos Off-Road , Ferimentos e Lesões , Adulto , Idoso , Dispositivos de Proteção da Cabeça , Humanos , Escala de Gravidade do Ferimento , Estudos Retrospectivos , Centros de Traumatologia , Ferimentos e Lesões/epidemiologia , Ferimentos e Lesões/etiologia
5.
J Cutan Pathol ; 49(7): 610-617, 2022 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-35294053

RESUMO

BACKGROUND: Subungual melanoma can be diagnostically challenging. We evaluated the potential of PReferentially expressed Antigen for MElanoma (PRAME) immunoreactivity for differentiating benign from malignant nail melanocytic lesions. METHODS: Sixty cases were identified (10 invasive melanomas, 8 melanomas in situ, 14 nevi, 12 cases of lentigo, and 16 of melanocytic activation). Percentage of PRAME-positive melanocytes was evaluated as follows: 0 no staining, 1+ 1%-25%, 2+ 26%-50%, 3+ 51%-75%, and 4+ >75%. A combined score of both percentage and intensity was also evaluated. RESULTS: The difference in PRAME expression between malignant and benign lesions was statistically significant (p < 0.0001). The degree of PRAME expression significantly correlated with patients' age and clinical size. When based on percentage score, 61.1% of melanomas showed a 4+ score, 16.7% showed a 3+ score, 11.1% showed a 1+ score, and 11.1% was negative; 69.0% of the benign lesions was negative, 23.8% showed a 1+ score, 4.8% showed a 2+ score, and 2.4% showed a 4+ score. When the cutoff value for malignancy decreased from 4+ to 3+, the sensitivity increased from 61.1% to 77.8%, while specificity remained 97.6%. Combined score results were similar. CONCLUSIONS: PRAME is a relatively sensitive and highly specific marker in differentiating benign from malignant nail melanocytic lesions. However, correlation with morphology is imperative.


Assuntos
Antígenos de Neoplasias , Melanoma , Doenças da Unha , Neoplasias Cutâneas , Antígenos de Neoplasias/metabolismo , Biomarcadores Tumorais/metabolismo , Diagnóstico Diferencial , Humanos , Imuno-Histoquímica , Melanócitos/patologia , Melanoma/patologia , Doenças da Unha/patologia , Neoplasias Cutâneas/patologia , Melanoma Maligno Cutâneo
6.
Gen Comp Endocrinol ; 327: 114095, 2022 10 01.
Artigo em Inglês | MEDLINE | ID: mdl-35835259

RESUMO

In this study, the combined effect of waterborne Zn and water hardness on the stress response in the goldfish Carassius auratus was investigated. Goldfish were exposed to Zn concentrations of 0.5, 1.0, and 3.0 mg/L and water hardness of 90, 270, and 450 mg/L CaCO3 for 1, 3, 7, and 14 d. After exposure, it was determined that higher the Zn concentration, the more obvious the stress response. However, the stress response reduced with increasing water hardness. An increase in the Zn concentration caused stress responses in fish according to the increase in the mRNA expressions of corticotropin-releasing hormone and adrenocorticotropic hormone and cortisol level in the hypothalamus-pituitary-interrenal axis. The expression of these factors was the highest on day 7 and decreased on day 14. Furthermore, to evaluate the stress change in the liver tissue, we analyzed alanine aminotransferase, aspartate aminotransferase, and heat shock protein 70 concentrations to determine the damage caused by Zn and the change in water hardness. Immunohistochemistry staining for Na+/K+-ATPase in the gills showed that the gill activity was inhibited by Zn, and an increase in water hardness could improve Na+/K+-ATPase. In conclusion, we found that increasing water hardness is a successful method to reduce the stress response in goldfish caused by Zn.


Assuntos
Carpa Dourada , Poluentes Químicos da Água , Adenosina Trifosfatases/metabolismo , Adenosina Trifosfatases/farmacologia , Animais , Brânquias/metabolismo , Carpa Dourada/metabolismo , Dureza , Água/metabolismo , Poluentes Químicos da Água/metabolismo , Zinco/metabolismo
7.
BMC Geriatr ; 22(1): 917, 2022 11 29.
Artigo em Inglês | MEDLINE | ID: mdl-36447166

RESUMO

BACKGROUND: Cervical artery dissection and subsequent ischemic stroke is the most serious safety concern associated with cervical spinal manipulation. METHODS: We evaluated the association between cervical spinal manipulation and cervical artery dissection among older Medicare beneficiaries in the United States. We employed case-control and case-crossover designs in the analysis of claims data for individuals aged 65+, continuously enrolled in Medicare Part A (covering hospitalizations) and Part B (covering outpatient encounters) for at least two consecutive years during 2007-2015. The primary exposure was cervical spinal manipulation; the secondary exposure was a clinical encounter for evaluation and management for neck pain or headache. We created a 3-level categorical variable, (1) any cervical spinal manipulation, 2) evaluation and management but no cervical spinal manipulation and (3) neither cervical spinal manipulation nor evaluation and management. The primary outcomes were occurrence of cervical artery dissection, either (1) vertebral artery dissection or (2) carotid artery dissection. The cases had a new primary diagnosis on at least one inpatient hospital claim or primary/secondary diagnosis for outpatient claims on at least two separate days. Cases were compared to 3 different control groups: (1) matched population controls having at least one claim in the same year as the case; (2) ischemic stroke controls without cervical artery dissection; and (3) case-crossover analysis comparing cases to themselves in the time period 6-7 months prior to their cervical artery dissection. We made each comparison across three different time frames: up to (1) 7 days; (2) 14 days; and (3) 30 days prior to index event. RESULTS: The odds of cervical spinal manipulation versus evaluation and management did not significantly differ between vertebral artery dissection cases and any of the control groups at any of the timepoints (ORs 0.84 to 1.88; p > 0.05). Results for carotid artery dissection cases were similar. CONCLUSION: Among Medicare beneficiaries aged 65 and older who received cervical spinal manipulation, the risk of cervical artery dissection is no greater than that among control groups.


Assuntos
Doenças das Artérias Carótidas , AVC Isquêmico , Manipulação da Coluna , Dissecação da Artéria Vertebral , Humanos , Idoso , Estados Unidos/epidemiologia , Manipulação da Coluna/efeitos adversos , Revisão da Utilização de Seguros , Dissecação da Artéria Vertebral/epidemiologia , Dissecação da Artéria Vertebral/etiologia , Dissecação da Artéria Vertebral/terapia , Medicare , Artérias
8.
J Exp Bot ; 72(2): 510-524, 2021 02 02.
Artigo em Inglês | MEDLINE | ID: mdl-33005924

RESUMO

Acyl-CoA:diacylglycerol acyltransferase (DGAT) catalyzes the final committed step in triacylglycerol biosynthesis in eukaryotes. In microalgae, the copy number of DGAT genes is extraordinarily expanded, yet the functions of many DGATs remain largely unknown. This study revealed that microalgal DGAT can function as a lysophosphatidic acyltransferase (LPAAT) both in vitro and in vivo while losing its original function as DGAT. Among the five DGAT-encoding genes identified and cloned from the green microalga Haematococcus pluvialis, four encoded HpDGATs that showed triacylglycerol synthase activities in yeast functional complementation analyses; the exception was one of the type II DGAT encoding genes, HpDGTT2. The hydrophobic recombinant HpDGTT2 protein was purified in soluble form and was found to function as a LPAAT via enzymatic assay. Introducing this gene into the green microalga Chlamydomonas reinhardtii led to retarded cellular growth, enlarged cell size, and enhanced triacylglycerol accumulation, identical to the phenotypes of transgenic strains overexpressing CrLPAAT. This study provides a framework for dissecting uncharacterized DGATs, and could pave the way to decrypting the structure-function relationship of this large group of enzymes that are critical to lipid biosynthesis.


Assuntos
Chlamydomonas reinhardtii , Microalgas , Aciltransferases , Diacilglicerol O-Aciltransferase/genética , Diglicerídeos , Microalgas/genética , Triglicerídeos
9.
J Surg Res ; 262: 85-92, 2021 06.
Artigo em Inglês | MEDLINE | ID: mdl-33549849

RESUMO

BACKGROUND: Snowmobiling is a popular activity that leads to geriatric trauma admissions; however, this unique trauma population is not well characterized. We aimed to compare the injury burden and outcomes for geriatric versus nongeriatric adults injured riding snowmobiles. MATERIALS AND METHODS: A retrospective cohort study was performed using the National Trauma Databank comparing nongeriatric (18-64) and geriatric adults (≥65) presenting after snowmobile-related trauma at level 1 and 2 trauma centers from 2011 to 2015. Demographic, admission, injury, and outcome data were collected and compared. A multivariate logistic regression model assessed for risk factors associated with severe injury (Injury Severity Score >15). Analysis was also performed using chi square, analysis of variance, and Kruskal-Wallis testing. RESULTS: A total of 2471 adult patients with snowmobile trauma were identified; 122 (4.9%) were geriatric. Rates of severe injury (Injury Severity Score >15) were similar between groups, 27.5% in geriatric patients and 22.5% in nongeriatric adults (P = 0.2). Geriatric patients experienced higher rates of lower extremity injury (50.4 versus 40.3%, P = 0.03), neck injury (4.1 versus 1.4%, P = 0.02), and severe spine injury (20.6 versus 7.0%, P = 0.004). Geriatric patients had longer hospitalizations (5 versus 3 d, P < 0.0001), rates of discharge to a facility (36.8% versus 12%, P < 0.0001), and higher mortality (4.1 versus 0.6%, P < 0.0001). Geriatric age did not independently increase the risk for severe injury. CONCLUSIONS: Geriatric age was not a significant predictor of severe injury after snowmobile trauma; however, geriatric patients suffered unique injuries, had longer hospitalizations, had higher rates of discharge to a facility, and had higher mortality. Tailored geriatric care may improve outcomes in this unique sport-related trauma population.


Assuntos
Veículos Off-Road , Ferimentos e Lesões/epidemiologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Escala de Gravidade do Ferimento , Traumatismos da Perna/epidemiologia , Tempo de Internação , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Lesões do Pescoço/epidemiologia , Estudos Retrospectivos , Ferimentos e Lesões/mortalidade , Adulto Jovem
10.
J Surg Res ; 259: 121-129, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-33279837

RESUMO

BACKGROUND: Downhill skiing accounts for a large portion of geriatric sport-related trauma. We assessed the national burden of geriatric versus nongeriatric ski trauma. MATERIALS AND METHODS: Adults presenting to level 1/2 trauma centers after ski-associated injuries from 2011 to 2015 were identified from the National Trauma Data Bank by ICD-9 code. We compared demographics, injury patterns, and outcomes between geriatric (age ≥65 y) and nongeriatric adult skiers (age 18-64 y). A multiple regression analysis assessed for risk factors associated with severe injury (Injury Severity Score >15). RESULTS: We identified 3255 adult ski trauma patients, and 16.7% (543) were geriatric. Mean ages for nongeriatric versus geriatric skiers were 40.8 and 72.1 y, respectively. Geriatric skiers more often suffered head (36.7 versus 24.3%, P < 0.0001), severe head (abbreviated injury scale score >3, 49.0 versus 31.5%, P < 0.0001) and thorax injuries (22.2 versus 18.1%, P = 0.03) as compared with nongeriatric skiers. Geriatric skiers were also more often admitted to the ICU (26.5 versus 14.9%, P < 0.0001), discharged to a facility (26.7 versus 11.6%, P < 0.0001), and suffered higher mortality rates (1.3 versus 0.4%, P = 0.004). Independent risk factors for severe injury included being male (OR: 1.68, CI: 1.22-2.31), helmeted (OR: 1.41, CI: 1.07-1.85), and having comorbidities (OR: 1.37, CI: 1.05-1.80). Geriatric age was not independently associated with severe injury. CONCLUSIONS: At level 1/2 trauma centers, geriatric age in ski trauma victims was associated with unique injury patterns, higher acuity, increased rates of facility care at discharge, and higher mortality as compared with nongeriatric skiers. Our findings indicate the need for specialized care after high impact geriatric ski trauma.


Assuntos
Efeitos Psicossociais da Doença , Traumatismos Craniocerebrais/epidemiologia , Esqui/lesões , Traumatismos Torácicos/epidemiologia , Centros de Traumatologia/estatística & dados numéricos , Adolescente , Adulto , Fatores Etários , Idoso , Comorbidade , Traumatismos Craniocerebrais/diagnóstico , Traumatismos Craniocerebrais/etiologia , Traumatismos Craniocerebrais/prevenção & controle , Bases de Dados Factuais , Feminino , Dispositivos de Proteção da Cabeça/estatística & dados numéricos , Mortalidade Hospitalar , Humanos , Escala de Gravidade do Ferimento , Unidades de Terapia Intensiva/estatística & dados numéricos , Tempo de Internação/estatística & dados numéricos , Masculino , Pessoa de Meia-Idade , Admissão do Paciente/estatística & dados numéricos , Estudos Retrospectivos , Fatores de Risco , Esqui/estatística & dados numéricos , Traumatismos Torácicos/diagnóstico , Traumatismos Torácicos/etiologia , Estados Unidos/epidemiologia , Adulto Jovem
11.
J Cutan Pathol ; 48(4): 519-525, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33184871

RESUMO

BACKGROUND: Traditionally, most cutaneous nevi show a gradient of HMB45 (human melanoma black 45) and negative PRAME (preferentially expressed antigen in melanoma) immunostaining, while melanomas often show irregularly positive, diffusely positive or completely negative HMB45 expression, and PRAME immunopositivity. However, we have occasionally observed benign halo nevi with loss of HMB45 gradient, raising diagnostic consideration for melanoma. The purpose of this study was to elucidate the expression pattern of HMB45 and PRAME in nevi with the halo phenomenon (NHP). METHODS: PRAME and HMB45 staining patterns in 20 cases of NHP and 16 cases of conventional nevi were evaluated using light microscopy. An HMB45 gradient was defined as immunopositivity in only superficial melanocytes. HMB45 aberrant expression consisted of superficial and deep immunopositivity. RESULTS: Aberrant HMB45 expression was observed in 10 of 20 NHP (50%). A gradient of HMB45 staining was seen in most conventional nevi, with only one showing focal weak expression in the deep dermis (6.3%). All cases of NHP and conventional nevi showed essentially negative immunostaining by PRAME. CONCLUSION: Aberrant HMB45 expression in NHP is not uncommon and may be a diagnostic pitfall. Negative PRAME immunostaining may be a reassuring finding to help differentiate halo nevus from malignant melanoma.


Assuntos
Antígenos de Neoplasias/metabolismo , Nevo com Halo/diagnóstico , Nevo com Halo/metabolismo , Antígeno gp100 de Melanoma/metabolismo , Adolescente , Adulto , Criança , Diagnóstico Diferencial , Feminino , Humanos , Masculino , Melanócitos/metabolismo , Melanócitos/patologia , Melanoma/diagnóstico , Melanoma/patologia , Microscopia/métodos , Pessoa de Meia-Idade , Nevo/patologia , Nevo com Halo/patologia , Nevo com Halo/ultraestrutura , Nevo Pigmentado/patologia , Estudos Retrospectivos , Neoplasias Cutâneas/diagnóstico , Neoplasias Cutâneas/patologia , Coloração e Rotulagem/métodos , Adulto Jovem , Melanoma Maligno Cutâneo
12.
Cancer ; 125(18): 3147-3154, 2019 09 15.
Artigo em Inglês | MEDLINE | ID: mdl-31120559

RESUMO

BACKGROUND: Surveillance recommendations for patients with low-risk, non-muscle-invasive bladder cancer (NMIBC) are based on limited evidence. The objective of this study was to add to the evidence by assessing outcomes after frequent versus recommended cystoscopic surveillance. METHODS: This was a retrospective cohort study of patients diagnosed with low-risk (low-grade Ta (AJCC)) NMIBC from 2005 to 2011 with follow-up through 2014 from the Department of Veterans Affairs. Patients were classified as having undergone frequent versus recommended cystoscopic surveillance (>3 vs 1-3 cystoscopies in the first 2 years after diagnosis). By using propensity score-adjusted models, the authors estimated the impact of frequent cystoscopy on the number of transurethral resections, the number of resections without cancer in the specimen, and the risk of progression to muscle-invasive cancer or bladder cancer death. RESULTS: Among 1042 patients, 798 (77%) had more frequent cystoscopy than recommended. In adjusted analyses, the frequent cystoscopy group had twice as many transurethral resections (55 vs 26 per 100 person-years; P < .001) and more than 3 times as many resections without cancer in the specimen (5.7 vs 1.6 per 100 person-years; P < .001). Frequent cystoscopy was not associated with time to progression or bladder cancer death (3% at 5 years in both groups; P = .990). CONCLUSIONS: Frequent cystoscopy among patients with low-risk NMIBC was associated with twice as many transurethral resections and did not decrease the risk for bladder cancer progression or death, supporting current guidelines.


Assuntos
Carcinoma de Células de Transição/cirurgia , Cistoscopia/métodos , Recidiva Local de Neoplasia/diagnóstico , Neoplasias da Bexiga Urinária/cirurgia , Assistência ao Convalescente , Idoso , Idoso de 80 Anos ou mais , Carcinoma de Células de Transição/mortalidade , Carcinoma de Células de Transição/patologia , Progressão da Doença , Feminino , Fidelidade a Diretrizes , Humanos , Masculino , Músculo Liso/patologia , Invasividade Neoplásica , Guias de Prática Clínica como Assunto , Estudos Retrospectivos , Neoplasias da Bexiga Urinária/mortalidade , Neoplasias da Bexiga Urinária/patologia
13.
J Clin Rheumatol ; 25(7): 279-283, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-29965854

RESUMO

OBJECTIVE: Hyperuricemia has been epidemiologically associated with multiple comorbidities including chronic renal failure and cardiovascular disease. Cause and effect are difficult to address, given comorbidities associated with and prevalence of metabolic syndrome. One impediment to achieving serum uric acid (sUa) levels less than or equal to 6.0 mg/DL is the concept that allopurinol might be nephrotoxic. We examined the relation of sUa less than or equal to 6.0 mg/dL to renal function over time. METHODS: This is a medical records review study of 348 hyperuricemia patients identified in 2015, as having been followed with serial uric acid measurements. After 1 year of serial urate levels, to allow for treatment, patient cohorts were defined: sUa less than or equal to 6.0 mg/dL and sUa greater than 6.0 mg/dL. A repeated measure model was used to test for an association between uric acid level and serum creatinine, while adjusting for covariates. RESULTS: There was a significant difference in the least square means of serum creatinine comparing those who achieved an sUa less than or equal to 6.0 mg/dL versus sUa greater than 6.0 mg/dL (1.39 mg/dL [95% confidence interval, 1.30-1.48] vs 1.57 mg/dL [95% confidence interval, 1.46-1.69]; p = 0.0015). This is a between-group difference in creatinine of 0.18 mg/dL. If a change in serum creatinine of 0.2 is considered significant, this short-term between-group progression of renal failure approaches clinical significance. CONCLUSIONS: Given that most serial measures were within the first few years of follow-up, and change in renal function occurs slowly over time, the between group difference of sUa of 0.18 mg/dL is close to a clinically significant creatinine difference of 0.2 mg/dL.


Assuntos
Alopurinol , Creatinina/sangue , Hiperuricemia , Falência Renal Crônica , Ácido Úrico/sangue , Idoso , Alopurinol/administração & dosagem , Alopurinol/efeitos adversos , Antimetabólitos/administração & dosagem , Antimetabólitos/efeitos adversos , Comorbidade , Correlação de Dados , Progressão da Doença , Feminino , Humanos , Hiperuricemia/sangue , Hiperuricemia/diagnóstico , Hiperuricemia/tratamento farmacológico , Hiperuricemia/epidemiologia , Falência Renal Crônica/sangue , Falência Renal Crônica/diagnóstico , Falência Renal Crônica/epidemiologia , Testes de Função Renal/métodos , Testes de Função Renal/estatística & dados numéricos , Masculino , Síndrome Metabólica/epidemiologia , Avaliação de Resultados em Cuidados de Saúde , Prevalência , Estados Unidos/epidemiologia
14.
Am J Occup Ther ; 73(5): 7305205070p1-7305205070p11, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31484031

RESUMO

OBJECTIVE: The objective of this study was to assess the feasibility of conducting a future full-scale trial to test the efficacy of an in-home occupational therapy intervention designed to reduce disability in older adult cancer survivors. METHOD: Participants reporting activity limitations during or after cancer treatment were enrolled in a Phase 1 pilot randomized controlled trial comparing the 6-wk intervention (n = 30) to usual care (n = 29). Descriptive data on retention rates were collected to assess feasibility of intervention and study procedures. Potential efficacy was explored through participants' self-reported disability, quality of life, activity level, and behavioral activation at 0, 8, and 16 wk after enrollment. RESULTS: Retention rates were high regarding completion of the intervention (90%) and outcome assessments (90% of usual-care participants and 80% of intervention participants). Outcomes consistently favored the intervention group, although group differences were small. CONCLUSION: The procedures were feasible to implement and acceptable to participants.


Assuntos
Terapia Ocupacional , Qualidade de Vida , Idoso , Sobreviventes de Câncer/estatística & dados numéricos , Humanos , Terapia Ocupacional/métodos , Avaliação de Resultados em Cuidados de Saúde
15.
Cancer Immunol Immunother ; 67(7): 1113-1121, 2018 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-29737375

RESUMO

Adaptive immune responses contribute to the pathogenesis of melanoma by facilitating immune evasion. V-domain Ig suppressor of T-cell activation (VISTA) is a potent negative regulator of T-cell function and is expressed at high levels on monocytes, granulocytes, and macrophages, and at lower densities on T-cell populations within the tumor microenvironment. In this study, 85 primary melanoma specimens were selected from pathology tissue archives and immunohistochemically stained for CD3, PD-1, PD-L1, and VISTA. Pearson's correlation coefficients identified associations in expression between VISTA and myeloid infiltrate (r = 0.28, p = 0.009) and the density of PD-1+ inflammatory cells (r = 0.31, p = 0.005). The presence of VISTA was associated with a significantly worse disease-specific survival in univariate analysis (hazard ratio = 3.57, p = 0.005) and multivariate analysis (hazard ratio = 3.02, p = 0.02). Our findings show that VISTA expression is an independent negative prognostic factor in primary cutaneous melanoma and suggests its potential as an adjuvant immunotherapeutic intervention in the future.


Assuntos
Antígenos B7/metabolismo , Antígeno B7-H1/metabolismo , Biomarcadores Tumorais/metabolismo , Linfócitos do Interstício Tumoral/imunologia , Melanoma/mortalidade , Receptor de Morte Celular Programada 1/metabolismo , Neoplasias Cutâneas/mortalidade , Antígenos B7/imunologia , Antígeno B7-H1/imunologia , Feminino , Seguimentos , Humanos , Linfócitos do Interstício Tumoral/metabolismo , Masculino , Melanoma/imunologia , Melanoma/metabolismo , Melanoma/patologia , Pessoa de Meia-Idade , Prognóstico , Receptor de Morte Celular Programada 1/imunologia , Neoplasias Cutâneas/imunologia , Neoplasias Cutâneas/metabolismo , Neoplasias Cutâneas/patologia , Taxa de Sobrevida , Microambiente Tumoral , Melanoma Maligno Cutâneo
16.
Palliat Med ; 32(1): 59-68, 2018 01.
Artigo em Inglês | MEDLINE | ID: mdl-28952887

RESUMO

BACKGROUND: Early outpatient palliative care consultations are recommended by clinical oncology guidelines globally. Despite these recommendations, it is unclear which components should be included in these encounters. AIM: Describe the evaluation and treatment recommendations made in early outpatient palliative care consultations. DESIGN: Outpatient palliative care consultation chart notes were qualitatively coded and frequencies tabulated. SETTING/PARTICIPANTS: Outpatient palliative care consultations were automatically triggered as part of an early versus delayed randomized controlled trial (November 2010 to April 2013) for patients newly diagnosed with advanced cancer living in the rural Northeastern US. RESULTS: In all, 142 patients (early = 70; delayed = 72) had outpatient palliative care consultations. The top areas addressed in these consultations were general evaluations-marital/partner status (81.7%), spirituality/emotional well-being (80.3%), and caregiver/family support (79.6%); symptoms-mood (81.7%), pain (73.9%), and cognitive/mental status (68.3%); general treatment recommendations-counseling (39.4%), maintaining current medications (34.5%), and initiating new medication (23.9%); and symptom-specific treatment recommendations-pain (22.5%), constipation (12.7%), depression (12.0%), advanced directive completion (43.0%), identifying a surrogate (21.8%), and discussing illness trajectory (21.1%). Compared to the early group, providers were more likely to evaluate general pain ( p = 0.035) and hospice awareness ( p = 0.005) and discuss/recommend hospice ( p = 0.002) in delayed group participants. CONCLUSION: Outpatient palliative care consultations for newly diagnosed advanced cancer patients can address patients' needs and provide recommendations on issues that might not otherwise be addressed early in the disease course. Future prospective studies should ascertain the value of early outpatient palliative care consultations that are automatically triggered based on diagnosis or documented symptom indicators versus reliance on oncologist referral.


Assuntos
Assistência Ambulatorial/organização & administração , Assistência Ambulatorial/estatística & dados numéricos , Enfermagem de Cuidados Paliativos na Terminalidade da Vida/organização & administração , Neoplasias/enfermagem , Enfermagem Oncológica/organização & administração , Pacientes Ambulatoriais/estatística & dados numéricos , Cuidados Paliativos/organização & administração , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Enfermagem de Cuidados Paliativos na Terminalidade da Vida/estatística & dados numéricos , Humanos , Masculino , Pessoa de Meia-Idade , New England , Enfermagem Oncológica/estatística & dados numéricos , Cuidados Paliativos/estatística & dados numéricos , Estudos Prospectivos
17.
Palliat Support Care ; 15(1): 44-56, 2017 02.
Artigo em Inglês | MEDLINE | ID: mdl-27516060

RESUMO

OBJECTIVE: Few decision aids are available for patients with a serious illness who face many treatment and end-of-life decisions. We evaluated the Looking Ahead: Choices for Medical Care When You're Seriously Ill® patient decision aid (PtDA), one component of an early palliative care clinical trial. METHOD: Our participants included individuals with advanced cancer and their caregivers who had participated in the ENABLE (Educate, Nurture, Advise, Before Life Ends) early palliative care telehealth randomized controlled trial (RCT) conducted in a National Cancer Institute-designated cancer center, a U.S. Department of Veterans Affairs medical center, and affiliated outreach clinics in rural New England. ENABLE included six weekly patient and three weekly family caregiver structured sessions. Participants watched the Looking Ahead PtDA prior to session 3, which covered content on decision making and advance care planning. Nurse coaches employed semistructured interviews to obtain feedback from consecutive patient and caregiver participants approximately one week after viewing the Looking Ahead PtDA program (booklet and DVD). RESULTS: Between April 1, 2011, and October 31, 2012, 57 patients (mean age = 64), 42% of whom had lung and 23% gastrointestinal cancer, and 20 caregivers (mean age = 59), 80% of whom were spouses, completed the PtDA evaluation. Participants reported a high degree of satisfaction with the PtDA format, as well as with its length and clarity. They found the format of using patient interviews "validating." The key themes were: (1) "the earlier the better" to view the PtDA; (2) feeling empowered, aware of different options, and an urgency to participate in advance care planning. SIGNIFICANCE OF RESULTS: The Looking Ahead PtDA was well received and helped patients with a serious illness realize the importance of prospective decision making in guiding their treatment pathways. We found that this PtDA can help seriously ill patients prior to the end of life to understand and discuss future healthcare decision making. However, systems to routinely provide PtDAs to seriously ill patients are yet not well developed.


Assuntos
Cuidadores/psicologia , Tomada de Decisões , Técnicas de Apoio para a Decisão , Neoplasias/psicologia , Neoplasias/terapia , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Cuidados Paliativos/métodos , Cuidados Paliativos/psicologia , Estudos Prospectivos , Ensaios Clínicos Controlados Aleatórios como Assunto
18.
Epilepsia ; 57(9): 1515-20, 2016 09.
Artigo em Inglês | MEDLINE | ID: mdl-27461072

RESUMO

OBJECTIVE: The primary objective for this study was to assess social cognition in patients with focal epilepsy using a naturalistic task, which accurately models complex real-world social interaction. METHODS: We conducted an observational study of social cognition in 43 patients with focal epilepsy and in 22 controls. Patients and controls completed The Awareness of Social Inference Test, which measures both basic and advanced social cognition in a realistic video-based format. Patient and controls also completed standard measures of cognitive functioning and measures of depression. RESULTS: Compared to controls, we found that patients with epilepsy (PWEs) had no difficulty identifying positively valenced emotional states (happiness) yet had difficulty identifying most negatively valenced emotional states (anger, fear, and disgust). In addition, PWEs were able to identify sincere exchanges correctly but could not identify sarcastic and insincere exchanges. We found that basic social cognition significantly correlated with standard generalized cognitive measures, whereas advanced social cognition did not. Finally, age at onset had significant impact on social cognition, whereas other epilepsy characteristics did not. SIGNIFICANCE: PWEs have deficits in social cognition when measured using a naturalistic video-based task. Advanced social cognition may be an independent cognitive domain in PWEs that is not adequately measured using standard psychometric instruments. Problems with social cognition may arise as a consequence of epilepsy during the periods of robust social development in childhood and adolescence.


Assuntos
Transtornos Cognitivos/etiologia , Epilepsias Parciais/complicações , Epilepsias Parciais/psicologia , Comportamento Social , Adolescente , Adulto , Depressão/diagnóstico , Depressão/etiologia , Eletroencefalografia , Feminino , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Testes Neuropsicológicos , Escalas de Graduação Psiquiátrica , Estudos Retrospectivos , Adulto Jovem
19.
BJU Int ; 115(2): 238-47, 2015 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-24666523

RESUMO

OBJECTIVE: To identify genetic variants that modify bladder cancer prognosis focusing on genes involved in major biological carcinogenesis processes (apoptosis, proliferation, DNA repair, hormone regulation, immune surveillance, and cellular metabolism), as nearly half of patients with bladder cancer experience recurrences reliable predictors of this recurrent phenotype are needed to guide surveillance and treatment. PATIENTS AND METHODS: We analysed variant genotypes hypothesised to modify these processes in 563 patients with urothelial-cell carcinoma enrolled in a population-based study of incident bladder cancer conducted in New Hampshire, USA. After diagnosis, patients were followed over time to ascertain recurrence and survival status, making this one of the first population-based studies with detailed prognosis data. Cox proportional hazards regression was used to assess the relationship between single nucleotide polymorphisms (SNPs) and prognosis endpoints. RESULTS: Patients with aldehyde dehydrogenase 2 (ALDH2) variants had a shorter time to first recurrence (adjusted non-invasive hazard ratio [HR] 1.90, 95% confidence interval [CI] 1.29-2.78). There was longer survival among patients with non-invasive tumours associated with DNA repair X-ray repair cross-complementing protein 4 (XRCC4) heterozygous genotype compared with wild-type (adjusted HR 0.53, 95% CI 0.38-0.74). Time to recurrence was shorter for patients who had a variant allele in vascular cellular adhesion molecule 1 (VCAM1) and were treated with immunotherapy (P interaction < 0.001). CONCLUSIONS: Our analysis suggests candidate prognostic SNPs that could guide personalised bladder cancer surveillance and treatment.


Assuntos
Aldeído Desidrogenase/genética , Antineoplásicos/uso terapêutico , Carcinoma de Células de Transição/terapia , Proteínas de Ligação a DNA/genética , Recidiva Local de Neoplasia/genética , Polimorfismo de Nucleotídeo Único , Neoplasias da Bexiga Urinária/terapia , Molécula 1 de Adesão de Célula Vascular/genética , Adulto , Idoso , Aldeído-Desidrogenase Mitocondrial , Carcinoma de Células de Transição/genética , Carcinoma de Células de Transição/mortalidade , Reparo do DNA , Feminino , Variação Genética , Genótipo , Humanos , Masculino , Pessoa de Meia-Idade , Terapia de Alvo Molecular/tendências , Estadiamento de Neoplasias , Medicina de Precisão/tendências , Prognóstico , Análise de Sobrevida , Neoplasias da Bexiga Urinária/genética , Neoplasias da Bexiga Urinária/mortalidade
20.
Dermatol Surg ; 41(12): 1411-8, 2015 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26551772

RESUMO

BACKGROUND: Hypertrophic lichen planus is a chronic variant of lichen planus with controversial malignant association. OBJECTIVE: To describe and analyze the relationship of squamous cell carcinoma (SCC) and hypertrophic lichen planus. MATERIALS AND METHODS: A retrospective chart review of patients with hypertrophic lichen planus and SCC was performed at the authors' institution. Thereafter, scientific databases were searched for articles reporting cases of SCC arising in hypertrophic lichen planus. Patient demographics, immune status, lichen planus features, and SCC data points were extracted for each patient and evaluated. RESULTS: Thirty-eight cases of SCC in hypertrophic lichen planus occurred in 16 women, average age: 61.4, and 22 men, average age: 51.3, after a lag time of 88 days to 40 years. Squamous cell carcinoma was uniformly located on the lower extremity. Men had larger SCC than women (p = .027) and a significantly longer lag time to SCC development (p = .002). Long lag time was associated with a smaller SCC size (p = .032). CONCLUSION: In the past, hypertrophic lichen planus and SCC have been considered isolated diseases. Based on an increasing number of cases, the association between hypertrophic lichen planus and keratinocyte malignancies warrants surveillance.


Assuntos
Carcinoma de Células Escamosas/patologia , Líquen Plano/patologia , Neoplasias Cutâneas/patologia , Idoso , Carcinoma de Células Escamosas/cirurgia , Transformação Celular Neoplásica , Feminino , Humanos , Hipertrofia , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Neoplasias Cutâneas/cirurgia , Fatores de Tempo
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