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BACKGROUND: Measurement of waist circumference is used to assess abdominal fat and risk of heart disease, type 2 diabetes, cancer and stroke. It is performed in several clinical settings for health promotion and medical assessment purposes, including statutory medical assessments where results may influence decisions on fitness to work. Under the Diving at Work Regulations 1997, working divers must have an annual assessment of their fitness to dive performed by an approved medical examiner of divers (AMED), appointed by the Health and Safety Executive (HSE). The assessment includes measurement of height, weight and waist circumference, the latter used as an indicator of central adiposity and associated health risks. AIMS: To establish the practice of AMEDs in measuring waist circumference of working divers undergoing medical assessment to determine their fitness to dive. METHODS: Ninety-seven AMEDs were sent a questionnaire and asked to describe their current practice in measuring waist circumference. The response rate was 79%. The audit standard used was the consensus document published by the World Health Organization (WHO). RESULTS: Of the 77 responses, 76 were completed sufficiently to allow analysis. When the waist was measured, there was consistency in the diver's level of clothing, stage of breathing and posture for the procedure but variability in the site of measurement. Only 7/76 (9%) respondents carried out waist measurement fully in line with WHO guidance. CONCLUSIONS: The audit has identified that there is a need for guidance for AMEDs on measuring waist circumference in the statutory medical assessment of working divers.
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BACKGROUND: ASN002 is an oral dual inhibitor of Janus kinase and spleen tyrosine kinase, which are involved in the pathogenesis of atopic dermatitis (AD) through their regulatory role on T helper (Th)1, Th2 and Th17/Th22 pathways. OBJECTIVES: The objectives of this study were to evaluate the efficacy, safety, pharmacokinetics and effects on systemic biomarkers of ASN002 in patients with moderate-to-severe AD. Methods A total of 36 patients with moderate-to-severe AD were randomized (3 : 1) to ASN002 or placebo in the phase Ib study. Three dosage cohorts were studied over a 28-day period (20 mg, 40 mg and 80 mg once daily). RESULTS: ASN002 was superior to placebo for the proportion of patients achieving Eczema Area and Severity Index (EASI) 50 (20 mg 20%, P = 0·93; 40 mg 100%, P = 0·003; 80 mg 83%, P = 0·03; placebo 22%), EASI 75 (20 mg 0%, P = 0·27; 40 mg 71%, P = 0·06; 80 mg 33%, P = 0·65; placebo 22%) and in change from baseline in pruritus (20 mg -1·3 ± 2·1, P = 0·81; 40 mg -3·1 ± 2·7, P = 0·27; 80 mg -4·7 ± 2·1, P = 0·01; placebo -1·6 ± 1·8). Adverse events were generally mild and similar across all groups. ASN002 showed dose-dependent plasma exposure with low interpatient variability, significantly downregulated several serum biomarkers involved in Th1, Th2 and Th17/Th22 immunity, and decreased the atherosclerosis-associated biomarker E selectin/SELE. CONCLUSIONS: In patients with moderate-to-severe AD, ASN002 showed strong efficacy with rapid onset of action and associated improvements in systemic inflammation.
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Acetonitrilas/administração & dosagem , Dermatite Atópica/tratamento farmacológico , Inibidores de Janus Quinases/administração & dosagem , Piperidinas/administração & dosagem , Piridazinas/administração & dosagem , Acetonitrilas/efeitos adversos , Acetonitrilas/farmacocinética , Adulto , Biomarcadores/sangue , Dermatite Atópica/sangue , Dermatite Atópica/diagnóstico , Dermatite Atópica/imunologia , Relação Dose-Resposta a Droga , Método Duplo-Cego , Regulação para Baixo/efeitos dos fármacos , Regulação para Baixo/imunologia , Selectina E/sangue , Feminino , Humanos , Inibidores de Janus Quinases/efeitos adversos , Inibidores de Janus Quinases/farmacocinética , Janus Quinases/antagonistas & inibidores , Janus Quinases/metabolismo , Masculino , Pessoa de Meia-Idade , Piperidinas/efeitos adversos , Piperidinas/farmacocinética , Placebos/administração & dosagem , Placebos/efeitos adversos , Piridazinas/efeitos adversos , Piridazinas/farmacocinética , Índice de Gravidade de Doença , Transdução de Sinais/efeitos dos fármacos , Transdução de Sinais/imunologia , Quinase Syk/antagonistas & inibidores , Quinase Syk/metabolismo , Resultado do Tratamento , Adulto JovemRESUMO
BACKGROUND: Weekly adalimumab (Humira® ) is approved for the treatment of hidradenitis suppurativa (HS) based on the 12-week placebo-controlled periods of the two phase III PIONEER trials. OBJECTIVES: Using PIONEER integrated trial results, we aimed to evaluate the optimal medium-term adalimumab maintenance dosing strategy for moderate-to-severe HS. METHODS: Each trial had two double-blind periods; 12-week Period A and 24-week Period B. Patients randomized to adalimumab 40 mg every week (ADAew) (Period A), were rerandomized in Period B to ADAew (ADAew/ew), ADA every other week (ADAew/eow), or placebo (ADAew/pbo). Placebo-randomized patients were reassigned in Period B to ADAew (PIONEER I) or placebo (PIONEER II). The primary outcome was HS Clinical Response (HiSCR). Patients who lost response during Period B were discontinued from the study and offered an option to enter the open-label extension (OLE) to receive ADAew. Results are reported across the two study periods, and data were combined from the two study periods and the OLE. RESULTS: For week-12 HiSCR achievers, the HiSCR week-36 rate was 48·1% (ADAew/ew) vs. 46·2% (ADAew/eow) and 32·1% (ADAew/pbo). Combining (post hoc) these patients with week-12 partial responders further differentiated outcomes in Period B (ADAew/ew 55·7% vs. ADAew/eow 40·0% and ADAew/pbo 30·1%). Period-B adverse-event rates were ADAew/ew 59·6% vs. ADAew/eow 57·4% and ADAew/pbo 65·0%. One patient (ADAew/ew) reported a serious infection. CONCLUSIONS: Weekly adalimumab treatment, effective throughout 36 weeks, was the optimal maintenance medium-term dosing regimen for this population. At least partial response after 12 weeks with continued weekly dosing had better outcomes than dose reduction or interruption. Patients who do not show at least a partial response to weekly adalimumab by week 12 are unlikely to benefit from continued therapy. No new safety risks were identified. What's already known about this topic? Hidradenitis suppurativa (HS) is a chronic inflammatory disease, commonly misinterpreted as an infection and treated with long-term antibiotic regimens or surgical incisions. Based on the chronicity of HS and the lack of evidence for efficacious and safe long-term HS treatments, it is important to evaluate medium- to long-term therapies for HS. Weekly adalimumab (Humira® ) is approved for the treatment of moderate-to-severe HS based on the two phase III PIONEER trials. What does this study add? This study pooled data from the two PIONEER trials, providing a more robust assessment of outcomes. After at least partial treatment success with weekly adalimumab short-term therapy (12 weeks), continuing weekly dosing during the subsequent 24 weeks had better outcomes than dose reduction or treatment interruption. Patients who do not show at least a partial response to weekly adalimumab by week 12 are unlikely to benefit from continued therapy.
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Adalimumab/administração & dosagem , Hidradenite Supurativa/tratamento farmacológico , Quimioterapia de Manutenção/métodos , Inibidores do Fator de Necrose Tumoral/administração & dosagem , Adalimumab/efeitos adversos , Adolescente , Adulto , Idoso , Método Duplo-Cego , Esquema de Medicação , Feminino , Hidradenite Supurativa/diagnóstico , Humanos , Análise de Intenção de Tratamento , Masculino , Pessoa de Meia-Idade , Placebos/administração & dosagem , Placebos/efeitos adversos , Índice de Gravidade de Doença , Fatores de Tempo , Resultado do Tratamento , Inibidores do Fator de Necrose Tumoral/efeitos adversos , Adulto JovemRESUMO
Background: We previously demonstrated that brentuximab vedotin (BV) used as second-line therapy in patients with Hodgkin lymphoma is a tolerable and effective bridge to autologous hematopoietic cell transplantation (AHCT). Here, we report the post-AHCT outcomes of patients treated with second-line standard/fixed-dose BV and an additional cohort of patients where positron-emission tomography adapted dose-escalation of second-line BV was utilized. Patients and methods: Patients on the dose-escalation cohort received 1.8 mg/kg of BV intravenously every 3 weeks for two cycles. Patients in complete remission (CR) after two cycles received two additional cycles of BV at 1.8 mg/kg, while patients with stable disease or partial response were escalated to 2.4 mg/kg for two cycles. All patients, regardless of treatment cohort, proceeded directly to AHCT or received additional pre-AHCT therapy at the discretion of the treating physician based on remission status after second-line BV. Results: Of the 20 patients enrolled to the BV dose-escalation cohort, 8 patients underwent BV dose-escalation. BV escalation was well-tolerated, but no patients who were escalated converted to CR. Of 56 evaluable patients treated across cohorts, the overall response rate (ORR) to second-line BV was 75% with 43% CR. Twenty-eight (50%) patients proceeded directly to AHCT without post-BV chemotherapy, and a total of 50 patients proceeded to AHCT. Thirteen patients received consolidative post-AHCT therapy with either radiation, BV, or a PD-1 inhibitor. After AHCT, the 2-year progression-free survival (PFS) and overall survival were 67% and 93%, respectively. The 2-year PFS among patients in CR at the time of AHCT (n = 37) was 71% compared with 54% in patients not in CR (p = 0.12). The 2-year PFS in patients who proceeded to AHCT directly after receiving BV alone was 77%. Conclusions: Second-line BV is an effective bridge to AHCT that produces responses of sufficient depth to provide durable remission in conjunction with AHCT (clinicaltrials.gov: NCT01393717).
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Antineoplásicos Imunológicos/administração & dosagem , Terapia Combinada/métodos , Transplante de Células-Tronco Hematopoéticas/métodos , Doença de Hodgkin/terapia , Imunoconjugados/administração & dosagem , Adolescente , Adulto , Brentuximab Vedotin , Terapia Combinada/mortalidade , Resistencia a Medicamentos Antineoplásicos , Feminino , Transplante de Células-Tronco Hematopoéticas/mortalidade , Doença de Hodgkin/mortalidade , Humanos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/mortalidade , Recidiva Local de Neoplasia/terapia , Intervalo Livre de Progressão , Terapia de Salvação/métodos , Terapia de Salvação/mortalidade , Transplante Autólogo , Adulto JovemRESUMO
BACKGROUND: Alongside impulsive suicide attempts, clinicians encounter highly premeditated suicidal acts, particularly in older adults. We have previously found that in contrast to the more impulsive suicide attempters' inability to delay gratification, serious and highly planned suicide attempts were associated with greater willingness to wait for larger rewards. This study examined neural underpinnings of intertemporal preference in suicide attempters. We expected that impulsivity and suicide attempts, particularly poorly planned ones, would predict altered paralimbic subjective value representations. We also examined lateral prefrontal and paralimbic correlates of premeditation in suicidal behavior. METHOD: A total of 48 participants aged 46-90 years underwent extensive clinical and cognitive characterization and completed the delay discounting task in the scanner: 26 individuals with major depression (13 with and 13 without history of suicide attempts) and 22 healthy controls. RESULTS: More impulsive individuals displayed greater activation in the precuneus/posterior cingulate cortex (PCC) to value difference favoring the delayed option. Suicide attempts, particularly better-planned ones, were associated with deactivation of the lateral prefrontal cortex (lPFC) in response to value difference favoring the immediate option. Findings were robust to medication exposure, depression severity and possible brain damage from suicide attempts, among other confounders. Finally, in suicide attempters longer reward delays were associated with diminished parahippocampal responses. CONCLUSIONS: Impulsivity was associated with an altered paralimbic (precuneus/PCC) encoding of value difference during intertemporal choice. By contrast, better-planned suicidal acts were associated with altered lPFC representations of value difference. The study provides preliminary evidence of impaired decision processes in both impulsive and premeditated suicidal behavior.
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Desvalorização pelo Atraso , Transtorno Depressivo Maior/fisiopatologia , Giro do Cíngulo/fisiopatologia , Lobo Parietal/fisiopatologia , Córtex Pré-Frontal/fisiopatologia , Tentativa de Suicídio/psicologia , Idoso , Idoso de 80 Anos ou mais , Encéfalo/fisiopatologia , Estudos de Casos e Controles , Comportamento de Escolha , Transtorno Depressivo Maior/psicologia , Feminino , Neuroimagem Funcional , Humanos , Comportamento Impulsivo , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , RecompensaRESUMO
Operation of a CCD imager on a curved focal surface offers advantages to flat focal planes, especially for lightweight, relatively simple optical systems. The first advantage is that the modulation transfer function can approach diffraction-limited performance for a spherical focal surface employed in large field-of-view or large-format imagers. The second advantage is that a curved focal surface maintains more uniform illumination as a function of radius from the field center. Examples of applications of curved imagers, described here, include a small compact imager and the large curved array used in the Space Surveillance Telescope. The operational characteristics and mechanical limits of an imager deformed to a 15 mm radius are also described.
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BACKGROUND: Both solar and non-solar exposures associated with occupation and work tasks have been reported as skin carcinogens. In the UK, there are well-established surveillance schemes providing relevant information, including when exposures took place, occupation, location of work and dates of symptom onset and diagnosis. AIMS: To add to the evidence on work-related skin neoplasia, including causal agents, geographical exposure and time lag between exposure and diagnosis. METHODS: This study investigated incident case reports of occupational skin disease originating from clinical specialists in dermatology reporting to a UK-wide surveillance scheme (EPIDERM) by analysing case reports of skin neoplasia from 1996 to 2012 in terms of diagnosis, employment, suspected causal agent and symptom onset. RESULTS: The suspected causal agent was 'sun/sunlight/ultraviolet light' in 99% of the reported work-related skin neoplasia cases. Most cases reported (91%) were in males, and the majority (62%) were aged over 65 at the time of reporting. More detailed information on exposure was available for 42% of the cases, with the median time from exposure to symptom onset ranging from 44 (melanoma) to 57 (squamous cell carcinoma) years. Irrespective of diagnostic category, the median duration of exposure to 'sun/sunlight/ultraviolet light' appeared longer where exposures occurred in the UK (range 39-51 years) rather than outside the UK (range 2.5-6.5 years). CONCLUSIONS: It is important to provide effective information about skin protection to workers exposed to solar radiation, especially to outdoor workers based outside the UK.
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Radiação de Fundo/efeitos adversos , Doenças Profissionais/diagnóstico , Doenças Profissionais/etiologia , Exposição Ocupacional/efeitos adversos , Neoplasias Cutâneas/epidemiologia , Luz Solar , Feminino , Humanos , Masculino , Melanoma/etiologia , Pessoa de Meia-Idade , Doenças Profissionais/epidemiologia , Reino Unido/epidemiologiaRESUMO
Genetic modification of human T cells to express transgene-encoded polypeptides, such as tumor targeting chimeric antigen receptors, is an emerging therapeutic modality showing promise in clinical trials. The development of simple and efficient techniques for purifying transgene(+) T cells is needed to facilitate the derivation of cell products with uniform potency and purity. Unlike selection platforms that utilize physical methods (immunomagnetic or sorting) that are technically cumbersome and limited by the expense and availability of clinical-grade components, we focused on designing a selection system on the basis of the pharmaceutical drug methotrexate (MTX), a potent allosteric inhibitor of human dihydrofolate reductase (DHFR). Here, we describe the development of self inactivating (SIN) lentiviral vectors that direct the coordinated expression of a CD19-specific chimeric antigen receptor (CAR), the human EGFRt tracking/suicide construct, and a methotrexate-resistant human DHFR mutein (huDHFR(FS); L22F, F31S). Our results demonstrate that huDHFR(FS) expression renders lentivirally transduced primary human CD45RO(+)CD62L(+) central memory T cells resistant to lymphotoxic concentrations of MTX up to 0.1 µM. Our modular complementary DNA (cDNA) design insures that selected MTX-resistant T cells co-express functionally relevant levels of the CD19-specific CAR and EGFRt. This selection system on the basis of huDHFR(FS) and MTX has considerable potential utility in the manufacturing of clinical-grade T cell products.
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Engenharia Celular , Vetores Genéticos , Linfócitos T/citologia , Tetra-Hidrofolato Desidrogenase/genética , Antígenos CD19/genética , Antagonistas do Ácido Fólico/farmacologia , Técnicas de Transferência de Genes , Humanos , Lentivirus/genética , Ativação Linfocitária/efeitos dos fármacos , Ativação Linfocitária/genética , Metotrexato/farmacologia , Linfócitos T/efeitos dos fármacos , Linfócitos T/metabolismoRESUMO
Patients with high-risk locally advanced/inflammatory and oligometastatic (≤3 sites) breast cancer frequently relapse or experience early progression. High-dose chemotherapy combined with peripheral stem cell rescue may prolong progression-free survival/relapse-free survival (PFS/RFS) and overall survival (OS). In this study, patients initiated high-dose chemotherapy with STAMP-V (carboplatin, thiotepa, and cyclophosphamide), ACT (doxorubicin, paclitaxel, and cyclophosphamide), or tandem melphalan and STAMP-V. Eighty-six patients were diagnosed with locally advanced/inflammatory (17 inflammatory) breast cancer, and 12 were diagnosed with oligometastatic breast cancer. Median follow-up was 84 months (range, 6-136 months) for patients with locally advanced cancer and 40 months (range, 24-62 months) for those with metastatic cancer. In the patients with locally advanced cancer, 5-year RFS and OS were 53% (95% CI, 41%-63%) and 71% (95% CI, 60%-80%), respectively, hormone receptors were positive in 74%, and HER2 overexpression was seen in 23%. In multivariate analysis, hormone receptor-positive disease and lower stage were associated with better 5-year RFS (60% for ER [estrogen receptor]/PR [progesterone receptor]-positive versus 30% for ER/PR-negative; P < .01) and OS (83% for ER/PR-positive versus 38% for ER/PR-negative; P < .001). In the patients with metastatic cancer, 3-year PFS and OS were 49% (95% CI, 19%-73%) and 73% (95% CI, 38%-91%), respectively. The favorable long-term RFS/PFS and OS for high-dose chemotherapy with peripheral stem cell rescue in this selected patient population reflect the relative safety of the procedure and warrant validation in defined subgroups through prospective, randomized, multi-institutional trials.
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Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/cirurgia , Neoplasias Inflamatórias Mamárias/tratamento farmacológico , Neoplasias Inflamatórias Mamárias/cirurgia , Transplante de Células-Tronco de Sangue Periférico/métodos , Adulto , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Neoplasias da Mama/patologia , Carboplatina/administração & dosagem , Terapia Combinada , Ciclofosfamida/administração & dosagem , Intervalo Livre de Doença , Doxorrubicina/administração & dosagem , Feminino , Humanos , Neoplasias Inflamatórias Mamárias/patologia , Melfalan/administração & dosagem , Pessoa de Meia-Idade , Metástase Neoplásica , Paclitaxel/administração & dosagem , Análise de Sobrevida , Tiotepa/administração & dosagem , Resultado do TratamentoRESUMO
Livestock contributes significantly to the world economy. However, animal diseases and food safety are still major constraints on livestock-sector productivity, economic growth, the reduction of poverty and food security. Efficient and effective governance of Veterinary Services throughout the world is a fundamental requirement for addressing the global animal health and related public health threats. Recent work by the World Organisation for Animal Health (OIE) through the application of the Tool for the Evaluation of Performance of Veterinary Services (PVS Tool) and related Gap Analysis (both of which form part of the PVS Pathway) has indicated that a significant proportion of the national Veterinary Services worldwide do not meet the essential requirements for good governance. This shortcoming poses a significant risk for many developing countries and their trading partners when considered in the context of the growing trade in animal-source foods, and the burgeoning global livestock population. Well-managed, transparent and credible Veterinary Services, in both the public and private sector, are essential for mitigating animal disease risks and ensuring sustainable incomes for vulnerable producers. They are also vital for limiting the public health risks posed by zoonotic diseases. This paper is intended to highlight the impact of governance on the delivery of veterinary services in a development context and the benefits generated by improving veterinary governance. It recognises 'global public good' elements embedded in the good governance of Veterinary Services, and it could also provide an operational development investment roadmap that builds on the OIE PVS Pathway, and innovative financing options based on government commitments supported by donor programmes.
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Países em Desenvolvimento , Saúde Global/normas , Cooperação Internacional , Medicina Veterinária/normas , Doenças dos Animais/economia , Doenças dos Animais/epidemiologia , Doenças dos Animais/prevenção & controle , Animais , Países em Desenvolvimento/economia , Inocuidade dos Alimentos , Saúde Global/economia , Saúde Global/tendências , Gado , Pobreza/prevenção & controle , Saúde Pública , Gestão de Riscos/economia , Fatores Socioeconômicos , Medicina Veterinária/economia , Medicina Veterinária/organização & administraçãoRESUMO
BACKGROUND: The efficacy of repetitive transcranial magnetic stimulation (rTMS) for depression may vary depending on the subregion stimulated within the dorsolateral prefrontal cortex (DLPFC). Clinical TMS typically uses scalp-based landmarks for DLPFC targeting, rather than individualized MRI guidance. OBJECTIVE: In rTMS patients, determine the brain systems targeted by multiple DLPFC stimulation rules by computing several surrogate measures: underlying brain targets labeled with connectivity-based atlases, subgenual cingulate anticorrelation strength, and functionally connected networks. METHODS: Forty-nine patients in a randomized controlled trial of rTMS therapy for treatment resistant major depression underwent structural and functional MRI. DLPFC rules were applied virtually using MR-image guidance. Underlying cortical regions were labeled, and connectivity with the subgenual cingulate and whole-brain computed. RESULTS: Scalp-targeting rules applied post hoc to these MRIs that adjusted for head size, including Beam F3, were comparably precise, successful in directly targeting classical DLPFC and frontal networks, and anticorrelated with the subgenual cingulate. In contrast, all rules involving fixed distances introduced variability in regions and networks targeted. The 5 cm rule targeted a transitional DLPFC region with a different connectivity profile from the adjusted rules. Seed-based connectivity analyses identified multiple regions, such as posterior cingulate and inferior parietal lobe, that warrant further study in order to understand their potential contribution to clinical response. CONCLUSION: EEG-based rules consistently targeted DLPFC brain regions with resting-state fMRI features known to be associated with depression response. These results provide a bridge from lab to clinic by enabling clinicians to relate scalp-targeting rules to functionally connected brain systems.
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Transtorno Depressivo Resistente a Tratamento , Estimulação Magnética Transcraniana , Depressão/diagnóstico por imagem , Depressão/terapia , Transtorno Depressivo Resistente a Tratamento/diagnóstico por imagem , Transtorno Depressivo Resistente a Tratamento/terapia , Humanos , Imageamento por Ressonância Magnética , Córtex Pré-Frontal/fisiologia , Estimulação Magnética Transcraniana/métodosRESUMO
BACKGROUND: Precise targeting of brain functional networks is believed critical for treatment efficacy of rTMS (repetitive pulse transcranial magnetic stimulation) in treatment resistant major depression. OBJECTIVE: To use imaging data from a "failed" clinical trial of rTMS in Veterans to test whether treatment response was associated with rTMS coil location in active but not sham stimulation, and compare fMRI functional connectivity between those stimulation locations. METHODS: An imaging substudy of 49 Veterans (mean age, 56 years; range, 27-78 years; 39 male) from a randomized, sham-controlled, double-blinded clinical trial of rTMS treatment, grouping participants by clinical response, followed by group comparisons of treatment locations identified by individualized fiducial markers on structural MRI and resting state fMRI derived networks. RESULTS: The average stimulation location for responders versus nonresponders differed in the active but not in the sham condition (P = .02). The average responder location derived from the active condition showed significant negative functional connectivity with the subgenual cingulate (P < .001) while the nonresponder location did not (P = .17), a finding replicated in independent cohorts of 84 depressed and 35 neurotypical participants. The responder and nonresponder stimulation locations evoked different seed based networks (FDR corrected clusters, all P < .03), revealing additional brain regions related to rTMS treatment outcome. CONCLUSION: These results provide evidence from a randomized controlled trial that clinical response to rTMS is related to accuracy in targeting the region within DLPFC that is negatively correlated with subgenual cingulate. These results support the validity of a neuro-functionally informed rTMS therapy target in Veterans.
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Transtorno Depressivo Resistente a Tratamento , Estimulação Magnética Transcraniana , Encéfalo/diagnóstico por imagem , Humanos , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Córtex Pré-Frontal , Resultado do TratamentoRESUMO
The Younger Dryas (YD) abrupt cooling event ca. 12.9 ± 0.1 ka is associated with substantial meltwater input into the North Atlantic Ocean, reversing deglacial warming. One controversial and prevailing hypothesis is that a bolide impact or airburst is responsible for these environmental changes. Here, highly siderophile element (HSE; Os, Ir, Ru, Pt, Pd, and Re) abundances and 187Os/188Os ratios were obtained in a well-dated sediment section at Hall's Cave, TX, USA to test this hypothesis. In Hall's Cave, layers below, above, and in the YD have 187Os/188Os ratios consistent with incorporation of extraterrestrial or mantle-derived material. The HSE abundances indicate that these layers contain volcanic gas aerosols and not extraterrestrial materials. The most likely explanation is that episodic, distant volcanic emissions were deposited in Hall's Cave sediments. Coupled 187Os/188Os ratios and HSE concentration data at close stratigraphic intervals are required to effectively differentiate between bolide and volcanic origins.
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BACKGROUND: Although secondary acute leukemias and myelodysplasia are the known complications of adjuvant chemotherapy for breast cancer, the treatment outcome of these secondary malignancies is presently unclear. We examined the clinical and pathological features as well as the treatment results of a series of patients with acute leukemia/myelodysplasia arising after adjuvant chemotherapy for breast cancer. PATIENTS AND METHODS: Patients referred to our institution during a 5-year period for treatment of acute leukemia/myelodysplasia and who had received adjuvant chemotherapy for breast cancer are included. Leukemia-free survival for the whole group and for patients who underwent hematopoietic stem cell transplantation (HSCT) was estimated. RESULTS: Fifteen women (14 with acute leukemia and one with myelodysplasia) were identified. Seven of 15 patients had received an anthracycline, cyclophosphamide and a taxane. Ten patients developed acute leukemia/myelodysplasia with a latency period of 2 years or less from initiation of chemotherapy. Although mixed-lineage leukemia (MLL) rearrangement was the commonest chromosomal abnormality (8 of 15 patients), various other chromosomal abnormalities were also detected. Twelve of 15 patients underwent HSCT (11 allogeneic and one autologous). Eleven of these 12 patients who underwent HSCT were in remission at a median follow-up of 20.4 months (range 4.4-53.3 months). CONCLUSION: Durable remissions can be achieved in patients who develop acute leukemia/myelodysplasia secondary to adjuvant chemotherapy for breast cancer and are able to undergo allogeneic HSCT. Our results indicate that HSCT should be an early consideration in the management of such patients who are suitable candidates for the procedure.
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Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias da Mama/tratamento farmacológico , Transplante de Células-Tronco Hematopoéticas , Leucemia/cirurgia , Síndromes Mielodisplásicas/cirurgia , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Neoplasias da Mama/patologia , Quimioterapia Adjuvante , Criança , Feminino , Humanos , Leucemia/induzido quimicamente , Pessoa de Meia-Idade , Síndromes Mielodisplásicas/induzido quimicamente , Indução de RemissãoRESUMO
Lower Paleolithic artifacts have been recovered from a single occupation surface within stratified deposits at Diring Yuriakh, an archaeological site in central Siberia. Thermoluminescence age estimates from eolian sediments indicate that the cultural horizon is greater than 260,000 years old. Diring Yuriakh is an order of magnitude older than documented Paleolithic sites in Siberia and is important for understanding the timing of human expansion into the far north, early adaptations to cold climates, and the peopling of the Americas.
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Arqueologia , Proteínas de Ligação a DNA/genética , Hominidae , Animais , Clima , Proteínas de Ligação a DNA/fisiologia , Humanos , SibériaRESUMO
Livestock contributes significantly to the world economy. However, animal diseases are still a major constraint on economic growth, the reduction of poverty and food security. Among the most significant diseases is foot and mouth disease (FMD), a highly contagious, multi-species animal disease with a devastating impact on national economies and trade. Less obvious is the severe constraint that FMD places on both development and the reduction of poverty in developing countries where this disease is endemic. As a result of its global implications and the high costs that it imposes on society, FMD is an infectious disease whose control and prevention are recognised as being a global public good. Moving towards the global control of FMD should be considered a priority for donors, but will require long-term commitment from all parties, strong political will from governments and concerted financial support from donors. Areas of intervention must fall within the framework of programmes developed by international organisations, such as the Food and Agriculture Organization of the United Nations (FAO) and the World Organisation for Animal Health (OIE), through the FAO/OIE Global Framework for the Progressive Control of FMD and Other Transboundary Animal Diseases, as well as the disease control programmes of the regions concerned. Such a goal should specifically focus on analytical work (micro-economic impact and cost-benefit analyses of FMD at the household level and on the poor), research, surveillance networks, communication, monitoring and evaluation, and continuous strengthening of Veterinary Services.
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Comércio , Abastecimento de Alimentos/normas , Febre Aftosa/economia , Febre Aftosa/prevenção & controle , Saúde Pública , Animais , Análise Custo-Benefício , Surtos de Doenças/prevenção & controle , Surtos de Doenças/veterinária , Abastecimento de Alimentos/economia , Febre Aftosa/epidemiologia , Pobreza , Vigilância de Evento Sentinela/veterináriaRESUMO
Allogeneic transplantation is an effective treatment for adult patients with high-risk ALL, including patients in first or second remission. Although only a few studies have evaluated the optimal transplant regimens, the data would suggest that a TBI-based regimen results in better disease control. Although not as potent as it is in other hematologic malignancies, the GVL effect is an important component of achieving cure of ALL. Because of the toxicity of the fully ablative regimen, reduced-intensity transplants are being explored in older patients with ALL when the prognosis is especially poor with standard chemotherapy.
Assuntos
Transplante de Células-Tronco Hematopoéticas/métodos , Leucemia-Linfoma Linfoblástico de Células Precursoras/terapia , Condicionamento Pré-Transplante/métodos , Idoso , Intervalo Livre de Doença , Efeito Enxerto vs Leucemia , Humanos , Pessoa de Meia-Idade , Neoplasia Residual , Inibidores de Proteínas Quinases/uso terapêutico , Transplante Homólogo/métodos , Irradiação Corporal TotalRESUMO
The purpose of the study was to evaluate the feasibility and safety of two cycles of high-dose chemotherapy (HDT) followed by autologous hematopoietic SCT (HSCT) in patients with poor prognosis Ewing family of tumors (EFT). Twenty patients with primary metastatic bulky disease or recurrent EFT were enrolled to a treatment protocol with two cycles of HDT and HSCT. Patients tolerated well the first (n=20) and second (n=13) cycles, with limited and predictable toxicities. Only one (5%) TRM occurred during the second cycle. Myeloid engraftment occurred at the median of 11 days after both cycles. At 3 years, the overall and EFS were 45% (confidence interval; CI 0.22, 0.69) and 47% (CI 0.25, 0.70), respectively, for the entire group and 58% (CI 0.30, 0.86) for patients who completed two cycles. Dose intensification with two cycles of HDT and HSCT is feasible and safe, with low and acceptable treatment-related morbidity and mortality. Adding a second course of therapy does not impair engraftment. However, only 65% of the patients were able to proceed to the second cycle. Further studies are required to define the optimal mode of delivery of HDT and HSCT in treatment of advanced EFT.
Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Neoplasias Ósseas/terapia , Transplante de Células-Tronco Hematopoéticas , Sarcoma de Ewing/terapia , Adolescente , Adulto , Neoplasias Ósseas/mortalidade , Criança , Intervalo Livre de Doença , Feminino , Sobrevivência de Enxerto , Humanos , Masculino , Sarcoma de Ewing/mortalidade , Taxa de Sobrevida , Fatores de Tempo , Transplante AutólogoRESUMO
The threat of climate change and global warming is now recognised worldwide and some alarming manifestations of change have occurred. The Asian continent, because of its size and diversity, may be affected significantly by the consequences of climate change, and its new status as a 'hub' of livestock production gives it an important role in mitigating possible impacts of climate variability on animal health. Animal health may be affected by climate change in four ways: heat-related diseases and stress, extreme weather events, adaptation of animal production systems to new environments, and emergence or re-emergence of infectious diseases, especially vector-borne diseases critically dependent on environmental and climatic conditions. To face these new menaces, the need for strong and efficient Veterinary Services is irrefutable, combined with good coordination of public health services, as many emerging human diseases are zoonoses. Asian developing countries have acute weaknesses in their Veterinary Services, which jeopardises the global surveillance network essential for early detection of hazards. Indeed, international cooperation within and outside Asia is vital to mitigating the risks of climate change to animal health in Asia.