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1.
Transl Res ; 271: 40-51, 2024 May 09.
Artigo em Inglês | MEDLINE | ID: mdl-38734064

RESUMO

The presence of abundant tumor stroma is a prominent characteristic of pancreatic ductal adenocarcinomas (PDAC) that potentially influences disease progression and therapy response. This study aims to investigate immune cell infiltration and epigenetic profiles in tumor cell enriched ("Tumor") and stroma cell enriched ("Stroma") regions within human PDAC tissue samples. By comparing those regions, we identified 25,410 differentially methylated positions (DMPs) distributed across 6,963 unique genes. Pathway enrichment analysis using the top 2,000 DMPs that were either hyper- or hypomethylated indicated that immune response pathways and the estrogen receptor pathway are epigenetically dysregulated in Tumor and Stroma regions, respectively. In terms of immune cell infiltration, we observed overall low levels of T cells in both regions. In Tumor regions however, occurrence of tumor-associated macrophages (TAMs) was higher than in Stroma regions (p = 0.02) concomitant with a dualistic distribution that stratifies PDAC patients into those with high and low TAM infiltration. By categorizing TAM levels into quartiles, our analysis revealed that PDAC patients with more than 1,515 TAMs per mm² exhibited significantly shorter overall survival (p = 0.036). Our data suggest that variations in inflammatory characteristics between the Tumor and Stroma defined compartments of PDAC may primarily stem from the presence of macrophages rather than lymphocytes. The abundance of TAMs within regions enriched with tumor cells correlates with patient survival, underscoring the potential significance of exploring therapeutic interventions targeting TAMs. Furthermore, directing attention towards the estrogen receptor pathway may represent a promising strategy to address the stroma cell component within the PDAC tumor microenvironment.

2.
Front Mol Biosci ; 9: 1026724, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36353734

RESUMO

Pseudomonas aeruginosa is a wide-spread opportunistic human pathogen and a high-risk factor for immunodeficient people and patients with cystic fibrosis. The extracellular lipase A belongs to the virulence factors of P. aeruginosa. Prior to the secretion, the lipase undergoes folding and activation by the periplasmic foldase LipH. At this stage, the enzyme is highly prone to aggregation in mild and high salt concentrations typical for the sputum of cystic fibrosis patients. Here, we demonstrate that the periplasmic chaperone Skp of P. aeruginosa efficiently prevents misfolding of the lipase A in vitro. In vivo experiments in P. aeruginosa show that the lipase secretion is nearly abolished in absence of the endogenous Skp. Small-angle X-ray scattering elucidates the trimeric architecture of P. aeruginosa Skp and identifies two primary conformations of the chaperone, a compact and a widely open. We describe two binding modes of Skp to the lipase, with affinities of 20 nM and 2 µM, which correspond to 1:1 and 1:2 stoichiometry of the lipase:Skp complex. Two Skp trimers are required to stabilize the lipase via the apolar interactions, which are not affected by elevated salt concentrations. We propose that Skp is a crucial chaperone along the lipase maturation and secretion pathway that ensures stabilization and carry-over of the client to LipH.

3.
Wien Klin Wochenschr ; 134(23-24): 815-821, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36326920

RESUMO

Growing evidence shows diminished response to mRNA-based SARS-CoV­2 vaccination in kidney transplant recipients. We aimed to investigate the seroconversion rate after a 3rd and 4th dose of mRNA vaccination in kidney transplant recipients without prior antibody response to two or three vaccination doses.This retrospective study included 324 prevalent kidney transplant recipients of a single tertiary transplantation center of which 157 remained seronegative, defined as anti-spike-RBD-IgG antibody titer < 7.1 BAU/ml, after two doses of mRNA-based SARS-CoV­2 vaccination. Maintenance immunosuppression was not changed. The median patient age was 60.6 years (IQR 51.4-68.1 years), 66.9% were male. Positivity for anti-spike-RBD-IgG (≥ 7.1 BAU/ml) was measured 4-5 weeks after administration of a 3rd and 4th vaccine dose.Seroconversion rates were 63.9% after a 3rd dose and 29.3% after a 4th dose of vaccine. Cumulative prevalence of seropositivity was 51.5% after 2 doses, 80.5% after 3 doses and 84.2% after 4 doses.In conclusion, seroconversion can be achieved in the majority of the kidney transplant recipients by administrating three or four doses of mRNA vaccine without changing maintenance immunosuppression.


Assuntos
COVID-19 , Transplante de Rim , Masculino , Humanos , Pessoa de Meia-Idade , Idoso , Feminino , Vacinas contra COVID-19 , RNA Mensageiro , Estudos Retrospectivos , COVID-19/epidemiologia , COVID-19/prevenção & controle , SARS-CoV-2 , Anticorpos Antivirais
4.
Psychol Health ; : 1-18, 2022 Oct 13.
Artigo em Inglês | MEDLINE | ID: mdl-36238974

RESUMO

Objectives: Targeting is a communication strategy in which a message is designed to address a particular group. It has been postulated that targeting increases message relevance; however, researchers are still explicating relevance and its impact on downline cognitive processes (e.g. message quality, cognitive cost). The current study addresses both gaps by evaluating the impact of targeted materials for White and African American audiences. Design: Adult women (N = 266) aged 18-74 (Mage = 47.12, SD = 1.40) were recruited to participate in a 2 (targeting: multiracial, African American) × 2 (race: White participants, African American participants) × 2 (topic: Hypertension, Environmental Breast Cancer) message experiment. Results: Across both topics, African American participants in the African American condition had reduced cognitive costs, increased message clarity, and increased message relevance. An indirect serial mediation model was supported wherein the relationship between targeting and behavioral intention was mediated by perceived relevance and perceived message quality. Conclusion: Targeting enhances perceived message relevance which, in turn, impacts behavioral intentions via perceived message quality. This model is consistent with the postulates of relevance theory and informs both intervention design and evaluation.

5.
JAMA Oncol ; 8(11): 1694-1696, 2022 11 01.
Artigo em Inglês | MEDLINE | ID: mdl-36136305

RESUMO

This cohort study assesses the capacity of passive immunization and tixagevimab and cilgavimab to inhibit interaction between receptor-binding domains and angiotensin-converting enzyme 2 in patients with hemato-oncologic diseases.


Assuntos
COVID-19 , Neoplasias , Humanos , SARS-CoV-2 , COVID-19/prevenção & controle , Vacinação , Neoplasias/tratamento farmacológico
6.
Open Forum Infect Dis ; 9(7): ofac327, 2022 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-35899289

RESUMO

Recurrent urinary tract infections are a common health problem. The only comprehensive synthesis on antibiotic prophylaxis in the last 15 years has been a guideline-embedded meta-analysis. We conducted a systematic review and meta-analysis of randomized controlled trials published up to October 13, 2020, evaluating patients age ≥12 years with either ≥2 episodes of lower urinary tract infection (UTI) within 6 months or ≥3 in the past year. Placebo or antibiotics were allowed as comparators. Study quality was low. In the 11 placebo-controlled trials, the risk for developing UTI was 85% lower with prophylaxis in comparison with placebo (risk ratio [RR], 0.15; 95% CI, 0.08-0.29). In the 9 head-to-head trials, the efficacy of the antibiotic agents appeared similar: The pooled RR indicated no difference between nitrofurantoin and comparators (RR, 1.01; 95% CI, 0.74-1.37), nor trimethoprim (+/- sulfamethoxazole; RR, 1.34; 95% CI, 0.89-2.03) or norfloxacin and comparators (RR, 1.17; 95% CI, 0.43-1.70). Studies comparing intermittent (postcoital) with continuous strategies revealed intermittent application to be equally effective.

8.
Eur J Cancer ; 165: 184-194, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-35248840

RESUMO

BACKGROUND: Due to potentially immune-escaping virus variants and waning immunity, a third SARS-CoV-2 vaccination dose is increasingly recommended. However, data in patients with cancer are limited. PATIENTS AND METHODS: We measured anti-SARS-CoV-2 spike protein antibody levels after the third vaccination dose in 439 patients with cancer and 41 health care workers (HCW) at an academic centre in Austria and a rural community hospital in Italy. Adverse events were retrieved from questionnaires. RESULTS: Overall, 439 patients and 41 HCW were included. SARS-CoV-2 infections were observed in 62/439 (14.1%) patients before vaccination and in 5/439 (1.1%) patients after ≥1 dose. Longitudinal analysis revealed a decrease of antibody levels between 3 and 6 months after second vaccination in patients with solid tumours (p < 0.001) and haematological malignancies without anti-B cell therapies (p < 0.001). After the third dose, anti-S levels increased compared to the first/second dose. Patients receiving B cell-targeted agents had lower antibody levels than patients with haematological malignancies undergoing other treatments (p < 0.001) or patients with solid tumours (p < 0.001). Moreover, anti-S levels correlated with CD19+ (B cell) and CD56+ (NK cell) counts in peripheral blood. The most frequent adverse events after the third dose were local pain (75/160, 46.9%), fatigue (25/160, 15.6%) and fever/chills (16/160, 10.0%). Patients with cancer had lower anti-S levels than HCW (p = 0.015). CONCLUSIONS: This study in patients with cancer shows improved antibody levels after the third vaccination dose at an acceptable side-effect profile. Lower antibody levels than in controls underline the need for further follow-up studies and dedicated trials.


Assuntos
COVID-19 , SARS-CoV-2 , COVID-19/prevenção & controle , Vacinas contra COVID-19/efeitos adversos , Pessoal de Saúde , Humanos , Imunidade , Estudos Retrospectivos , Vacinação
9.
Wien Klin Wochenschr ; 134(9-10): 371-376, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-35171337

RESUMO

BACKGROUND: Cancer patients infected with severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2) have an increased risk of mortality. Here, we investigated predictive factors for coronavirus disease 2019 (COVID-19) associated mortality in patients with neoplastic diseases treated throughout Austria. METHODS: In this multicentric nationwide cohort study, data on patients with active or previous malignant diseases and SARS-CoV­2 infections diagnosed between 13 March 2020 and 06 April 2021 were collected. Collected data included the stage of the malignant disease and outcome parameters 30 days after the diagnosis of SARS-CoV­2 infection. RESULTS: The cohort consisted of 230 individuals of which 75 (32.6%) patients were diagnosed with hematologic malignancies and 155 (67.4%) with solid tumors. At a median follow-up of 31 days after COVID-19 diagnosis, 38 (16.5%) patients had died due to COVID-19. Compared to survivors, patients who died were older (62.4 vs. 71.4 years, p < 0.001) and had a higher ECOG performance status (0.7 vs. 2.43, p < 0.001). Furthermore, higher neutrophil counts (64.9% vs. 73.8%, p = 0.03), lower lymphocyte counts (21.4% vs. 14%, p = 0.006) and lower albumin levels (32.5 g/l vs. 21.6 g/l, p < 0.001) were observed to be independent risk factors for adverse outcomes. No association between mortality and systemic antineoplastic therapy was found (p > 0.05). In 60.6% of the patients, therapy was postponed due to quarantine requirements or hospital admission. CONCLUSION: Mortality of Austrian cancer patients infected with SARS-CoV­2 is comparable to that of other countries. Furthermore, risk factors associated with higher mortality were evident and similar to the general population. Treatment delays were frequently observed.


Assuntos
COVID-19 , Neoplasias , Áustria/epidemiologia , Teste para COVID-19 , Estudos de Coortes , Humanos , Neoplasias/diagnóstico , Neoplasias/epidemiologia , Neoplasias/terapia , SARS-CoV-2 , Tempo para o Tratamento
10.
JAMA Oncol ; 8(1): 106-113, 2022 01 01.
Artigo em Inglês | MEDLINE | ID: mdl-34591965

RESUMO

Importance: To our knowledge, little is known about antibody development after SARS-CoV-2 vaccination in immunocompromised individuals, such as patients with cancer. Objective: To determine whether hematooncological patients develop anti-SARS-CoV-2 antibodies after vaccination. Design, Setting, and Participants: This retrospective cohort study included 2 independent cohorts of patients who were treated for hematological and solid malignant tumors between October 2020 and May 2021, comprising 901 samples from 595 patients and 58 health care workers (HCWs). Serum samples were collected from patients who were treated at an academic center and a community hospital in a rural area and a control group of HCWs, all of whom received SARS-CoV-2 vaccination. Main Outcomes and Measures: Total anti-SARS-CoV-2 nucleocapsid (anti-NC) and antispike protein (anti-S) antibodies were measured retrospectively. Results: In total, 595 patients (320 women [53.8%] and 275 men [46.2%]; median [range] age, 67 [19-96] years) and 58 HCWs (40 women [69.0%] and 18 men [31.0%]; median [range] age, 42 [24-60] years) were included. Previous SARS-CoV-2 infection was documented in 43 of 595 (7.2%), while anti-NC antibodies that suggested previous infections were observed in 49 of 573 evaluable patients (8.6%). In both cohorts, anti-S antibody levels were higher in fully vaccinated patients compared with patients who received 1 dose. After the first vaccination, patients with hematological cancer who received B cell-targeting agents had lower anti-S levels (median, 1.6 AU/mL; range: 0-17 244 AU/mL) than patients who received other therapies (median, 191.6 AU/mL; range, 0-40 000; P < .001) or patients with solid tumors (median, 246.4 AU/mL; range, 0-40 000 AU/mL; P < .001). Anti-S levels after the first vaccination differed according to ongoing antineoplastic treatment modalities, with the lowest median levels in patients who received chemotherapy alone (157.7 AU/mL; range, 0-40 000 AU/mL) or in combination with immunotherapy (118.7 AU/mL; range, 14.1-38 727 AU/mL) and the highest levels in patients with no ongoing antineoplastic treatment (median, 634.3 AU/mL; range, 0-40 000 AU/mL; P = .01). Antibody levels after full immunization were higher in HCWs (median, 2500 U/mL; range, 485-2500 U/mL) than in patients with cancer (median, 117.0 U/mL; range, 0-2500 U/mL; P < .001). Conclusions and Relevance: In this cohort study of patients with hematooncological diseases and a control group of HCWs, anti-SARS-CoV-2 antibodies after vaccination could be detected in patients with cancer. Lower antibody levels compared with HCWs and differences in seroconversion in specific subgroups underscore the need for further studies on SARS-CoV-2 vaccination in patients with hematooncological disease.


Assuntos
COVID-19 , SARS-CoV-2 , Adulto , Idoso , Vacinas contra COVID-19 , Estudos de Coortes , Feminino , Pessoal de Saúde , Humanos , Imunidade Humoral , Masculino , Estudos Prospectivos , Estudos Retrospectivos , Vacinação
11.
Wien Klin Wochenschr ; 133(17-18): 909-914, 2021 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34410467

RESUMO

BACKGROUND: During the second wave of the coronavirus disease 2019 (COVID-19) pandemic Austria suffered one of the highest severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) rates worldwide. We report performance parameters of a SARS-CoV­2 screening program established for cancer outpatients at our center. METHODS: Institutional policy recommended routine biweekly SARS-CoV­2 testing. Adherence to the testing recommendation during the second wave of the COVID-19 pandemic between 1 October and 30 November 2020 was analyzed. The SARS-CoV­2 infection rate during first wave period (21 March to 4 May 2020) was compared to the one during second wave. RESULTS: A total of 1577 cancer patients were seen at our outpatient clinic during the second wave. In 1079/1577 (68.4%) patients, at least 1 SARS-CoV2 test was performed. Overall 2833 tests were performed, 23/1577 (1.5%, 95% confidence interval, CI 1.0-2.2%) patients were tested positive for SARS-CoV­2, which indicates a significant increase compared to the first wave (4/1016; 0.4%, 95% CI 0.1-1.0%) with an odds ratio of 3.9 (95% CI 1.5-10.1; p < 0.005). Patients undergoing active anticancer treatment (172/960; 17.9% not tested) were more likely to have undergone a SARS-CoV­2 test than patients in follow-up or best supportive care (326/617; 52.8% not tested p < 0.001). Furthermore, patients with only 1 visit within 4 weeks were more likely to not have undergone a SARS-CoV­2 test (386/598; 64.5%) compared to patients with 2 or more visits (112/979; 11.4%; p < 0.001). The projected number of patients with undetected SARS-CoV­2 infection during the study period was 5. CONCLUSION: We identified clinical patient parameters influencing SARS-CoV­2 testing coverage in cancer outpatients. Our data can provide information on generation of standard operating procedures and resource allocation during subsequent infection waves.


Assuntos
COVID-19 , Neoplasias , Teste para COVID-19 , Detecção Precoce de Câncer , Humanos , Neoplasias/epidemiologia , Pacientes Ambulatoriais , Pandemias , RNA Viral , SARS-CoV-2
12.
Nutrition ; 78: 110949, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-32871324

RESUMO

OBJECTIVES: Nutrition backlash is a disposition defined by negative feelings about dietary recommendations. Past research has measured nutrition backlash using the nutrition backlash scale (NBS) and found that it is negatively related to the consumption of fruits and vegetables. The aim of this study was to examine several aspects of the NBS, including factor structure, discriminant validity, and relationship to demographic characteristics and health behaviors. METHODS: Adults were recruited to participate in two studies. Study 1 (N = 480) included measures of nutritional backlash, information overload, worry, fatalism, and nutrition-related behaviors. Study 2 (N = 399) was a follow-up that examined the factor structure of the NBS in a separate sample. RESULTS: In study 1, a six-item version of the NBS was found to be a good fit for the data and discriminant from overload, worry, and fatalism. NBS was higher for those with less education, non-white participants, and men. Individuals with higher backlash were less likely to look at nutritional labels and to use sunscreen. Study 2 confirmed the factor structure from study 1. CONCLUSIONS: A six-item version of the NBS was found to be reliable, discriminant from related measures, higher in underserved groups (less-educated, non-white, and male participants), and related to nutrition label use.


Assuntos
Comportamentos Relacionados com a Saúde , Verduras , Adulto , Dieta , Rotulagem de Alimentos , Humanos , Masculino , Psicometria , Reprodutibilidade dos Testes , Inquéritos e Questionários
13.
ESMO Open ; 5(5): e000889, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-32878898

RESUMO

BACKGROUND: During the COVID-19 outbreak, healthcare professionals (HCP) are at the frontline of clinical management and at increased risk for infection. The SARS-CoV-2 seroprevalence of oncological HCP and their patients has significant implications for oncological care. METHODS: HCP and patients with cancer at the Division of Oncology, Medical University of Vienna were included between 21 March and 4 June and tested for total antibodies against SARS-CoV-2 employing the Roche Elecsys Anti-SARS-CoV-2 immunoassay. Reactive samples were confirmed or disproved by the Abbott SARS-CoV-2 IgG test. Additionally, a structured questionnaire regarding basic demographic parameters, travel history and COVID-19-associated symptoms had to be completed by HCP. RESULTS: 146 subjects (62 HCP and 84 patients with cancer) were enrolled. In the oncological HCP cohort, 20 (32.3%) subjects were medical oncologists, 28 (45.2%) nurses at our ward and 14 (22.6%) fulfil other functions such as study coordinators. In the patient cohort, most individuals are on active anticancer treatment (96.4%). 26% of the HCP and 6% of the patients had symptoms potentially associated with COVID-19 since the end of February 2020. However, only in 2 (3.2%) HCP and in 3 (3.6%) patients, anti-SARS-Cov-2 total antibodies were detected. The second assay for anti-SARS-Cov-2 IgG antibodies confirmed the positive result in all HCP and in 2 (2.4%) patients, suggesting an initial assay's unspecific reaction in one case. In individuals with a confirmed test result, an active COVID-19 infection was documented by a positive SARS-CoV-2 RNA PCR test. CONCLUSION: Specific anti-SARS-CoV-2 antibodies were found solely in persons after a documented SARS-CoV-2 viral infection, thus supporting the test methods' high sensitivity and specificity. The low prevalence of anti-SARS-CoV-2 antibodies in our cohorts indicates a lack of immunity against SARS-CoV-2. It highlights the need for continued strict safety measures to prevent uncontrolled viral spread among oncological HCPs and patients with cancer.


Assuntos
Anticorpos Antivirais/sangue , Betacoronavirus/imunologia , Técnicas de Laboratório Clínico , Infecções por Coronavirus/diagnóstico , Corpo Clínico Hospitalar , Serviço Hospitalar de Oncologia , Pacientes , Pneumonia Viral/diagnóstico , Testes Sorológicos , Centros de Atenção Terciária , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Áustria/epidemiologia , Betacoronavirus/patogenicidade , Biomarcadores/sangue , COVID-19 , Teste para COVID-19 , Infecções por Coronavirus/epidemiologia , Infecções por Coronavirus/transmissão , Infecções por Coronavirus/virologia , Feminino , Interações Hospedeiro-Patógeno , Humanos , Masculino , Pessoa de Meia-Idade , Recursos Humanos de Enfermagem Hospitalar , Oncologistas , Enfermagem Oncológica , Pandemias , Pneumonia Viral/epidemiologia , Pneumonia Viral/transmissão , Pneumonia Viral/virologia , Valor Preditivo dos Testes , Estudos Prospectivos , Reprodutibilidade dos Testes , Estudos Retrospectivos , SARS-CoV-2 , Estudos Soroepidemiológicos , Adulto Jovem
14.
J Clin Oncol ; 38(30): 3547-3554, 2020 10 20.
Artigo em Inglês | MEDLINE | ID: mdl-32795227

RESUMO

PURPOSE: To analyze the prevalence of SARS-CoV-2 infection in patients with cancer in hospital care after implementation of institutional and governmental safety measurements. METHODS: Patients with cancer routinely tested for SARS-CoV-2 RNA by nasal swab and real-time polymerase chain reaction between March 21 and May 4, 2020, were included. The results of this cancer cohort were statistically compared with the SARS-CoV-2 prevalence in the Austrian population as determined by a representative nationwide random sample study (control cohort 1) and a cohort of patients without cancer presenting to our hospital (control cohort 2). RESULTS: A total of 1,688 SARS-CoV-2 tests in 1,016 consecutive patients with cancer were performed. A total of 270 of 1,016 (26.6%) of the patients were undergoing active anticancer treatment in a neoadjuvant/adjuvant and 560 of 1,016 (55.1%) in a palliative setting. A total of 53 of 1,016 (5.2%) patients self-reported symptoms potentially associated with COVID-19. In 4 of 1,016 (0.4%) patients, SARS-CoV-2 was detected. At the time of testing at our department, all four SARS-CoV-2-positive patients were asymptomatic, and two of them had recovered from symptomatic COVID-19. Viral clearance was achieved in three of the four patients 14-56 days after testing positive. The estimated odds ratio of SARS-CoV-2 prevalence between the cancer cohort and control cohort 1 was 1.013 (95% CI, 0.209 to 4.272; P = 1), and between control cohort 2 and the cancer cohort it was 18.333 (95% CI, 6.056 to 74.157). CONCLUSION: Our data indicate that continuation of active anticancer therapy and follow-up visits in a large tertiary care hospital are feasible and safe after implementation of strict population-wide and institutional safety measures during the current COVID-19 pandemic. Routine SARS-CoV-2 testing of patients with cancer seems advisable to detect asymptomatic virus carriers and avoid uncontrolled viral spread.


Assuntos
Betacoronavirus/isolamento & purificação , Infecções por Coronavirus/diagnóstico , Neoplasias/virologia , Pneumonia Viral/diagnóstico , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , COVID-19 , Estudos de Coortes , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias/tratamento farmacológico , Pandemias , SARS-CoV-2 , Centros de Atenção Terciária , Adulto Jovem
15.
Am J Lifestyle Med ; 12(6): 486-498, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30783404

RESUMO

The goal of this study was to review published data on iron status among vegetarian adults. Thirteen original articles met the inclusion criteria. Among female vegetarians, the percentage of the sample with ferritin <12 µg/L or <12 ng/mL ranged from 12% to 79%. An inadequate hemoglobin concentration ranged from 6% to 30.3%. Among males, the range of ferritin <12 µg/L across studies was from 1.7% to 29%. The prevalence of hemoglobin below deficiency cutoff ranged from 0% to 15.3%. A higher percentage of vegetarian females, compared to nonvegetarian participants, had ferritin below deficiency cutoff in all but one study (34% vs 0%, 47% vs 42%, 18% vs 13%, 27.8% vs 6.5% among Catholic nuns and 19.4% among college students, 79% Indian, and 56% Caucasian vegetarian vs 27% of nonvegetarian). Serum ferritin was lower in male vegetarians than male nonvegetarians in each study (11% among vegans and 21% among vegetarians compared to 6% and 7% among high and moderate meat consumers, 3% of vegetarians, and 25% vegans vs 0% of nonvegetarians, 29% vs 7%, 9% vs 0%). Vegetarians have a high prevalence of depleted iron stores. A higher proportion of vegetarians, compared to nonvegetarians, had iron deficiency anemia. This is especially true for premenopausal vegetarian women.

17.
Acta Mater ; 89: 278-289, 2015 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-25937805

RESUMO

Thin metal films deposited on polymer substrates are used in flexible electronic devices such as flexible displays or printed memories. They are often fabricated as complicated multilayer structures. Understanding the mechanical behavior of the interface between the metal film and the substrate as well as the process of crack formation under global tension is important for producing reliable devices. In the present work, the deformation behavior of copper films (50-200 nm thick), bonded to polyimide directly or via a 10 nm chromium interlayer, is investigated by experimental analysis and computational simulations. The influence of the various copper film thicknesses and the usage of a brittle interlayer on the crack density as well as on the stress magnitude in the copper after saturation of the cracking process are studied with in situ tensile tests in a synchrotron and under an atomic force microscope. From the computational point of view, the evolution of the crack pattern is modeled as a stochastic process via finite element based cohesive zone simulations. Both, experiments and simulations show that the chromium interlayer dominates the deformation behavior. The interlayer forms cracks that induce a stress concentration in the overlying copper film. This behavior is more pronounced in the 50 nm than in the 200 nm copper films.

18.
Biol Syst Open Access ; 12013 Aug 20.
Artigo em Inglês | MEDLINE | ID: mdl-24353985

RESUMO

The most severe cases of autism are diagnosed by extreme social dysfunction and other behavioral abnormalities. A number of genetic studies have been conducted to correlate behavioral phenotypes to genetic dysfunctions, but no "autism gene" has yet been discovered. In addition, environmental factors have been found to influence the development of autistic traits with high probability. This review will examine the role of a shortened period of neuroplasticity as a unifying feature of the autistic phenotype. The neuroplastic period of interest normally extends into adolescence, allowing for neural integration and the development of language and social skills. Early closure of this period may result in a shortened period of development, forcing the brain to rely on underdeveloped structures.

19.
Oncol Nurs Forum ; 40(2): 180-7, 2013 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-23448743

RESUMO

PURPOSE/OBJECTIVES: To evaluate a resiliency program designed to educate oncology nurses about compassion fatigue. DESIGN: Descriptive pilot study. SETTING: A National Cancer Institute-designated comprehensive cancer center in the midwestern United States. SAMPLE: 13 oncology nurses employed in an outpatient infusion center. METHODS: Nurses attended a five-week program involving five 90-minute sessions on compassion fatigue resiliency. A pre- and post-test design, using repeated measures, was conducted over six months. MAIN RESEARCH VARIABLES: Scores on the Professional Quality of Life (ProQOL) IV, Maslach Burnout Inventory-Human Services Survey, Impact of Event Scale-Revised (IES-R), and the Nursing Job Satisfaction Scale. FINDINGS: Long-term benefits were realized from the program. Secondary traumatization scores on the ProQOL IV declined immediately after the program, remained down at three months, and then dropped again at six months, with a statistically significant mean difference compared with baseline. The average IES-R total scores improved significantly overall and for each of the three postintervention time points. Participants evaluated the program positively with respect to their ability to apply and benefit from resiliency techniques. CONCLUSIONS: This is the first reported study to show benefits gained from a compassion fatigue intervention program. Participants received useful strategies for managing stress at work and home. IMPLICATIONS FOR NURSING: Compassion fatigue is a prevalent condition among healthcare providers. Development of resiliency to compassion fatigue may improve decision making, clarity of communication, and patient and nurse satisfaction. KNOWLEDGE TRANSLATION: Self-regulation offers an approach to reduce stress during a perceived threat. Working by intention reduces reactivity in the workplace and makes communication more intentional and, therefore, effective.


Assuntos
Esgotamento Profissional/terapia , Empatia , Fadiga/terapia , Enfermagem Oncológica , Resiliência Psicológica , Desenvolvimento de Pessoal/métodos , Adaptação Psicológica , Adulto , Atitude do Pessoal de Saúde , Esgotamento Profissional/psicologia , Fadiga/psicologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Recursos Humanos de Enfermagem Hospitalar/educação , Recursos Humanos de Enfermagem Hospitalar/psicologia , Ambulatório Hospitalar/organização & administração , Projetos Piloto , Avaliação de Programas e Projetos de Saúde , Desenvolvimento de Pessoal/organização & administração
20.
Z Psychosom Med Psychother ; 51(1): 23-37, 2005.
Artigo em Alemão | MEDLINE | ID: mdl-15834838

RESUMO

OBJECTIVES: At the Tiefenbrunn hospital, patients suffering from severe psychiatric and psychosomatic disorders are treated. The treatment concept is psychodynamically oriented. Psychopharmacological treatments are included if necessary. This article reports the results of the treatment of a sample of patients with schizophrenic and other psychotic disorders (ICD-10: F20-F25). METHODS: An unselected sample of N = 33 patients was studied upon admission and before discharge with a set of routinely administered standardized instruments. RESULTS: According to the data, all of these patients were severely disturbed: Upon admission to the clinic, they showed high pathological values in the Beeintrachtigungs- Schwere-Score (degree of impairment score; Schepank 1995), the Symptom Checklist SCL-90-R (Franke 1995), the Inventory of Interpersonal Problems (Horowitz et al. 1994), as well as a high degree of comorbid disorders. A comparison of the data at admission and at discharge shows that these patients improved significantly and substantially concerning symptoms, interpersonal problems, contentedness with life and individually formulated target problems. DISCUSSION: The results of the present study are discussed with regard to both the treatment of psychotic patients and the results of other studies.


Assuntos
Antipsicóticos/uso terapêutico , Admissão do Paciente , Unidade Hospitalar de Psiquiatria , Terapia Psicanalítica , Psicoterapia , Transtornos Psicóticos/terapia , Esquizofrenia/terapia , Psicologia do Esquizofrênico , Adulto , Terapia Combinada , Delusões/diagnóstico , Delusões/psicologia , Delusões/terapia , Feminino , Humanos , Masculino , Inventário de Personalidade , Escalas de Graduação Psiquiátrica , Transtornos Psicóticos/diagnóstico , Transtornos Psicóticos/psicologia , Esquizofrenia/diagnóstico , Resultado do Tratamento
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