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result(s) for
"Herrmann, K."
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Investigating the relationships between approaches to learning, learner identities and academic achievement in higher education
by
McCune, V.
,
Herrmann, K. J.
,
Bager-Elsborg, A.
in
Academic Achievement
,
Achievement Need
,
Affinity
2017
This paper considers relationships between approaches to learning, learner identities, self-efficacy beliefs and academic achievement in higher education. In addition to already established survey instruments, a new scale, subject area affinity, was developed. The scale explores the extent to which students identify with their area of study and imagine being part of it in future. The new scale showed strong psychometric properties when it was tested on a sample of 4377 students at a research-intensive university. The new scale correlated positively with both the deep approach and self-efficacy scales. The new scale also correlated negatively with the surface approach scale. K-means cluster analysis identified seven distinct groups of students who espoused interpretable combinations of approaches, self-efficacy and subject area affinity. Cluster membership was associated with differences in academic achievement. Implications are discussed.(HRK / Abstract übernommen).
Journal Article
EANM procedure guideline for the treatment of liver cancer and liver metastases with intra-arterial radioactive compounds
by
Chiesa, C.
,
Gnesin, S.
,
Flamen, P.
in
Bile Duct Neoplasms - drug therapy
,
Bile Ducts, Intrahepatic - pathology
,
Carcinoma, Hepatocellular - drug therapy
2022
Primary liver tumours (i.e. hepatocellular carcinoma (HCC) or intrahepatic cholangiocarcinoma (ICC)) are among the most frequent cancers worldwide. However, only 10–20% of patients are amenable to curative treatment, such as resection or transplant. Liver metastases are most frequently caused by colorectal cancer, which accounts for the second most cancer-related deaths in Europe. In both primary and secondary tumours, radioembolization has been shown to be a safe and effective treatment option. The vast potential of personalized dosimetry has also been shown, resulting in markedly increased response rates and overall survival. In a rapidly evolving therapeutic landscape, the role of radioembolization will be subject to changes. Therefore, the decision for radioembolization should be taken by a multidisciplinary tumour board in accordance with the current clinical guidelines. The purpose of this procedure guideline is to assist the nuclear medicine physician in treating and managing patients undergoing radioembolization treatment.
Preamble
The European Association of Nuclear Medicine (EANM) is a professional non-profit medical association that facilitates communication worldwide among individuals pursuing clinical and research excellence in nuclear medicine. The EANM was founded in 1985. These guidelines are intended to assist practitioners in providing appropriate nuclear medicine care for patients. They are not inflexible rules or requirements of practice and are not intended, nor should they be used, to establish a legal standard of care. The ultimate judgment regarding the propriety of any specific procedure or course of action must be made by medical professionals taking into account the unique circumstances of each case. Thus, there is no implication that an approach differing from the guidelines, standing alone, is below the standard of care. To the contrary, a conscientious practitioner may responsibly adopt a course of action different from that set out in the guidelines when, in the reasonable judgment of the practitioner, such course of action is indicated by the condition of the patient, limitations of available resources or advances in knowledge or technology subsequent to publication of the guidelines. The practice of medicine involves not only the science but also the art of dealing with the prevention, diagnosis, alleviation and treatment of disease. The variety and complexity of human conditions make it impossible to always reach the most appropriate diagnosis or to predict with certainty a particular response to treatment. Therefore, it should be recognised that adherence to these guidelines will not ensure an accurate diagnosis or a successful outcome. All that should be expected is that the practitioner will follow a reasonable course of action based on current knowledge, available resources and the needs of the patient to deliver effective and safe medical care. The sole purpose of these guidelines is to assist practitioners in achieving this objective.
Journal Article
Catalytic activity imperative for nanoparticle dose enhancement in photon and proton therapy
2022
Nanoparticle-based radioenhancement is a promising strategy for extending the therapeutic ratio of radiotherapy. While (pre)clinical results are encouraging, sound mechanistic understanding of nanoparticle radioenhancement, especially the effects of nanomaterial selection and irradiation conditions, has yet to be achieved. Here, we investigate the radioenhancement mechanisms of selected metal oxide nanomaterials (including SiO
2
, TiO
2
, WO
3
and HfO
2
), TiN and Au nanoparticles for radiotherapy utilizing photons (150 kVp and 6 MV) and 100 MeV protons. While Au nanoparticles show outstanding radioenhancement properties in kV irradiation settings, where the photoelectric effect is dominant, these properties are attenuated to baseline levels for clinically more relevant irradiation with MV photons and protons. In contrast, HfO
2
nanoparticles retain some of their radioenhancement properties in MV photon and proton therapies. Interestingly, TiO
2
nanoparticles, which have a comparatively low effective atomic number, show significant radioenhancement efficacies in all three irradiation settings, which can be attributed to the strong radiocatalytic activity of TiO
2
, leading to the formation of hydroxyl radicals, and nuclear interactions with protons. Taken together, our data enable the extraction of general design criteria for nanoparticle radioenhancers for different treatment modalities, paving the way to performance-optimized nanotherapeutics for precision radiotherapy.
Nanoparticles have recently received attention in radiation therapy since they can act as radioenhancers. In this article, the authors report on the dose enhancement capabilities of a series of nanoparticles based on their metal core composition and beam characteristics, obtaining designing criteria for their optimal performance in specific radiotreatments.
Journal Article
Modular stimuli-responsive hydrogel sealants for early gastrointestinal leak detection and containment
by
Tsolaki, Elena
,
Starsich, Fabian H. L.
,
Abundo, Maria Paulene
in
631/61/54/990
,
639/166/985
,
639/301/923/1027
2022
Millions of patients every year undergo gastrointestinal surgery. While often lifesaving, sutured and stapled reconnections leak in around 10% of cases. Currently, surgeons rely on the monitoring of surrogate markers and clinical symptoms, which often lack sensitivity and specificity, hence only offering late-stage detection of fully developed leaks. Here, we present a holistic solution in the form of a modular, intelligent suture support sealant patch capable of containing and detecting leaks early. The pH and/or enzyme-responsive triggerable sensing elements can be read out by point-of-need ultrasound imaging. We demonstrate reliable detection of the breaching of sutures, in as little as 3 hours in intestinal leak scenarios and 15 minutes in gastric leak conditions. This technology paves the way for next-generation suture support materials that seal and offer disambiguation in cases of anastomotic leaks based on point-of-need monitoring, without reliance on complex electronics or bulky (bio)electronic implantables.
Digestive surgical leaks manifesting days after a successful surgery can lead to severe complications and affect healthcare worldwide. Here, the authors address the problem holistically with a hydrogel patch capable of sealing tissues, while detecting imminent leaks via a smartphone-operated ultrasound probe.
Journal Article
Developing measures to assess constructs from the Inner Setting domain of the Consolidated Framework for Implementation Research
by
Fernandez, Maria E.
,
Tu, Shin Ping
,
Williams, Rebecca S.
in
CFIR
,
Colorectal cancer screening implementation
,
Consolidated Framework for Implementation Research
2018
Background
Scientists and practitioners alike need reliable, valid measures of contextual factors that influence implementation. Yet, few existing measures demonstrate reliability or validity. To meet this need, we developed and assessed the psychometric properties of measures of several constructs within the
Inner Setting
domain of the Consolidated Framework for Implementation Research (CFIR).
Methods
We searched the literature for existing measures for the 7 Inner Setting domain constructs (
Culture Overall
,
Culture Stress
,
Culture Effort
,
Implementation Climate
,
Learning Climate
,
Leadership Engagement
,
and Available Resources
). We adapted items for the healthcare context, pilot-tested the adapted measures in 4 Federally Qualified Health Centers (FQHCs), and implemented the revised measures in 78 FQHCs in the 7 states (
N
= 327 respondents) with a focus on colorectal cancer (CRC) screening practices. To psychometrically assess our measures, we conducted confirmatory factor analysis models (CFA; structural validity), assessed inter-item consistency (reliability), computed scale correlations (discriminant validity), and calculated inter-rater reliability and agreement (organization-level construct reliability and validity).
Results
CFAs for most constructs exhibited good model fit (CFI > 0.90, TLI > 0.90, SRMR < 0.08, RMSEA < 0.08), with almost all factor loadings exceeding 0.40. Scale reliabilities ranged from good (0.7 ≤
α
< 0.9) to excellent (
α
≥ 0.9). Scale correlations fell below 0.90, indicating discriminant validity. Inter-rater reliability and agreement were sufficiently high to justify measuring constructs at the clinic-level.
Conclusions
Our findings provide psychometric evidence in support of the CFIR Inner Setting measures. Our findings also suggest the Inner Setting measures from individuals can be aggregated to represent the clinic-level. Measurement of the Inner Setting constructs can be useful in better understanding and predicting implementation in FQHCs and can be used to identify targets of strategies to accelerate and enhance implementation efforts in FQHCs.
Journal Article
Uniting Drug and Delivery: Metal Oxide Hybrid Nanotherapeutics for Skin Wound Care
by
Matter, Martin
,
Herrmann, Inge
,
Probst, Sebastian
in
Angiogenesis
,
Antibiotics
,
Bacterial infections
2020
Wound care and soft tissue repair have been a major human concern for millennia. Despite considerable advancements in standards of living and medical abilities, difficult-to-heal wounds remain a major burden for patients, clinicians and the healthcare system alike. Due to an aging population, the rise in chronic diseases such as vascular disease and diabetes, and the increased incidence of antibiotic resistance, the problem is set to worsen. The global wound care market is constantly evolving and expanding, and has yielded a plethora of potential solutions to treat poorly healing wounds. In ancient times, before such a market existed, metals and their ions were frequently used in wound care. In combination with plant extracts, they were used to accelerate the healing of burns, cuts and combat wounds. With the rise of organic chemistry and small molecule drugs and ointments, researchers lost their interest in inorganic materials. Only recently, the advent of nano-engineering has given us a toolbox to develop inorganic materials on a length-scale that is relevant to wound healing processes. The robustness of synthesis, as well as the stability and versatility of inorganic nanotherapeutics gives them potential advantages over small molecule drugs. Both bottom-up and top-down approaches have yielded functional inorganic nanomaterials, some of which unite the wound healing properties of two or more materials. Furthermore, these nanomaterials do not only serve as the active agent, but also as the delivery vehicle, and sometimes as a scaffold. This review article provides an overview of inorganic hybrid nanotherapeutics with promising properties for the wound care field. These therapeutics include combinations of different metals, metal oxides and metal ions. Their production, mechanism of action and applicability will be discussed in comparison to conventional wound healing products.
Journal Article
Longer-term recurrence rate after low versus high dose radioiodine ablation for differentiated thyroid Cancer in low and intermediate risk patients: a meta-analysis
2020
Background
Regarding the longer-term recurrence rate the optimal activity for the remnant thyroid ablation in patients with differentiated thyroid cancer (DTC) is discussed controversially. For the short-term ablation success rate up to 12 months there are already several meta-analyses. In this study we performed the first meta-analysis regarding the longer-term recurrence rate after radioactive 131-I administration.
Methods
We conducted an electronic search using PubMed/MEDLINE, EMBASE and the Cochrane Library. All randomized controlled trials (RCTs) assessed the recurrence rate after radioactive iodine ablation in patients with DTC, with a follow-up of at least two years were selected. Statistics were performed by using Review Manager version 5.3 and Stata software.
Results
Four RCTs were included in the study, involving 1501 patients. There was no indication for heterogeneity (
I
2
= 0%) and publication bias. The recurrence rate among patients who had a low dose 131-iodine ablation was not higher than for a high dose activity (odds ratio (OR) 0.93 [95% confidence interval (CI) 0.53–1.63];
P
= 0.79). The mean follow-up time was between 4.25 and 10 years. The subgroup analysis regarding the TSH stimulated thyroglobulin values (< 10 ng/mL versus < 2 ng/mL versus ≤1 ng/mL) showed no influence on recurrence rate.
Conclusions
For the first time we showed that the longer-term, at least 2-year follow-up, recurrence rate among patients who had 131-iodine ablation with 1.1 GBq was not higher than with 3.7 GBq.
Journal Article
A Wearable In‐Pad Diagnostic for the Detection of Disease Biomarkers in Menstruation Blood
by
Dosnon, Lucas
,
Herrmann, Inge K.
,
Rduch, Thomas
in
Antigens
,
Biomarkers
,
Biomarkers - analysis
2025
The pain‐free monitoring of blood‐based biomarkers is essential for early detection of diseases like cancers, infections, and metabolic disorders such as diabetes. While research often focuses on venous blood analysis, menstruation blood is an overlooked but promising source. Evidence shows a strong correlation between biomarker levels in menstruation and venous blood for many clinical analytes. A wearable, microfluidic monitoring platform integrated into hygiene pads is presented for electronic‐free, naked‐eye detection of disease biomarkers in menstruation blood (MenstruAI). Semi‐quantitative detection of C‐reactive protein (CRP), cancer biomarkers carcinoembryonic antigen (CEA) and cancer antigen 125 (CA‐125), and endometriosis biomarker CA‐125 is demonstrated. The biomarker‐induced color changes can be read by the naked eye or a smartphone app with a machine‐learning algorithm for semi‐quantitative analysis. MenstruAI can revolutionize women's health by offering a non‐invasive, affordable, and accessible health monitoring method, democratizing healthcare, and enhancing service availability and equity. MenstruAI integrates a paper‐based biosensor into sanitary pads to detect biomarkers in menstrual blood, enabling accessible, lab‐free diagnostics health. The platform supports early disease detection, especially in underserved communities, while challenging menstrual stigma and opening pathways for scalable, inclusive, and sustainable population health screening through wearable technologies.
Journal Article
How Attachments to the Nation Shape Beliefs About the World: A Theory of Motivated Reasoning
2017
If competing beliefs about political events in the world stem largely from information asymmetries, then more information and knowledge should reduce the gap in competing perceptions. Empirical studies of decision making, however, often find just the reverse: as knowledge and the stakes in play go up, the beliefs about what is happening polarize rather than converge. The theory proposed here attributes this to motivated reasoning. Emotions inside the observer shape beliefs along with information coming from the outside world. A series of experiments embedded in a national survey of Americans finds that a primary driver of the beliefs someone forms about globalization, other countries, and the politics in the Middle East is how strongly they attach their social identity to the United States. Attachment produces more intense positive and negative emotions that in turn shape the interpretation of unfolding events and lead norms to be applied in an inconsistent fashion. People, in effect, rewrite reality around their favored course of action, marrying the logic of appropriateness to their own preferences. Beliefs, consequently, are not independent of preferences but related to them. Motivated reasoning, while not consistent with rational models, is predictable and can lead to expensive mistakes and double standards that undermine liberal internationalism.
Journal Article
The Role of Poly(ADP-ribose) Polymerase 1 in Nuclear and Mitochondrial Base Excision Repair
2023
Poly(ADP-ribose) (PAR) Polymerase 1 (PARP-1), also known as ADP-ribosyl transferase with diphtheria toxin homology 1 (ARTD-1), is a critical player in DNA damage repair, during which it catalyzes the ADP ribosylation of self and target enzymes. While the nuclear localization of PARP-1 has been well established, recent studies also suggest its mitochondrial localization. In this review, we summarize the differences between mitochondrial and nuclear Base Excision Repair (BER) pathways, the involvement of PARP-1 in mitochondrial and nuclear BER, and its functional interplay with other BER enzymes.
Journal Article