45 results
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2. Ontogeny and associated changes of the extinct sloth Simomylodon uccasamamensis (Xenarthra, Mylodontidae) from the Pliocene of the eastern Puna, Argentina.
- Author
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Quiñones SI, Luna CA, Miño-Boilini ÁR, Candela AM, and Zurita AE
- Subjects
- Argentina, Animals, Biological Evolution, Fossils anatomy & histology, Sloths anatomy & histology
- Abstract
Within Xenarthra (Eocene-Recent), Folivora developed (late Eocene-Recent) a remarkable diversity with respect to ecology and taxonomy over its evolutionary history. Knowledge of the diversity achieved by members of this clade in high-altitude areas of South America (i.e., Altiplano and Puna regions of Peru, Bolivia, and northwestern Argentina) has been improved in recent decades. A particular example involves the late Neogene Mylodontidae Simomylodon uccasamamensis, known mostly from multiple specimens recovered from the Bolivian Altiplano. Although several anatomical descriptions of this ground sloth have been published, almost nothing is known about its ontogenetic development and the associated morphological changes. Here we describe and compare new specimens of S. uccasamamensis from the upper level of the Tafna Formation (Pliocene) in the eastern Puna (ca. 3800 masl), Argentina, representing the southernmost record of this species. The new material is represented by specimens showing different ontogenetic stages, from infant to adult. One subadult specimen reached an estimated body mass of ca. 232 kg. The comparative study of external and internal morphology (the latter obtained from CT scans and radiography) shows remarkable changes in the mandible and molariforms associated with ontogeny; in addition, evidence suggests that the mfs2-3 are the first functional teeth, followed by mf1 and cf1. Based on our body mass estimates (ca. 232 kg.), we inferred an average lifespan of 14 years, 9-month gestation time, and sexual maturation at 4.1 years, quite similar to the values we obtained based on estimated body masses of adult specimens from Bolivia published by previous authors. Along its latitudinal distribution (ca. 14° S-21° S) S. uccasamamensis co-occurred with other ground sloths (e.g., Megatheriinae, Thalassocninae, and Scelidotheriinae), suggesting niche partitioning. The presence of this medium-sized ground sloth is consistent with the similarity between the faunas of eastern Puna and the Bolivian Altiplano during the Pliocene, which is also concordant with what was observed in other clades, such as Rodentia and Notoungulata., (© 2024 Anatomical Society.)
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- 2025
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3. Update on Menopause Hormone Therapy; Current Indications and Unanswered Questions.
- Author
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Mukherjee A and Davis SR
- Abstract
Objective: To provide clinicians involved in managing menopause with a summary of current evidence surrounding menopause hormone therapy (MHT)., Design: The authors evaluate and synthesize existing pooled evidence relating to MHT's clinical indications, efficacy, and safety and explore the limitations of existing data., Patients: The review focuses on MHT-related outcomes in women with natural-timed menopause captured within observational studies, RCTs, and pooled data from pivotal meta-analyses and reviews., Measurements: Available published data are scrutinized. Available evidence and notably lacking data from women not adequately represented in published MHT trials, such as those with socioeconomic adversity, significant comorbidities, and minority ethnic backgrounds, are highlighted and deliberated., Results: The impact of MHT differs significantly between demographics. Current consensus recommendations for MHT emphasize the importance of tailoring type, route, dose, and duration of therapy to individual needs and risk/benefit ratio through shared decision-making. MHT impact can change over time. Current MHT data support its benefits for treating menopause symptoms and a potential window of opportunity in midlife to benefit skeletal health. Limitations of current evidence highlight menopause health inequalities and underscores the need for further research., Conclusions: This review recommends tailored use of MHT for well-defined indications, recognizing its value for menopause symptom relief and skeletal benefits for many midlife women. MHT may be used as long as benefits outweigh risks, through shared decision-making. There is insufficient clinical evidence to support the long-term use of MHT in some contemporary cohorts of women accessing MHT in clinical practice., (© 2025 The Author(s). Clinical Endocrinology published by John Wiley & Sons Ltd.)
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- 2025
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4. From local knowledge and science to policy: Lessons learned from Fiji's valuable grouper fisheries.
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Sadovy de Mitcheson Y, Batibasaga A, Hatten CER, and Mangubhai S
- Abstract
Pacific Island communities are heavily dependent on fisheries for subsistence and livelihoods. Yet, despite their importance, coastal fisheries are poorly managed and commercial pressures increasingly threaten them. Groupers (Epinephelidae) are exceptionally vulnerable to overexploitation due to aspects of their biology while their economic value makes them a prime target for commerce. Fiji has a significant grouper fishery and is a useful case study to assess a data-poor, economically valuable sector to evaluate management measures, options, and needs. Data from multiple sources over three decades were integrated with original research involving fisher interviews, market surveys, stock assessments, and underwater census to assess the status of the country's grouper fishery. Catch rates are declining and trade now includes a high percentage of immature groupers, with aggregating species (mainly Epinephelus polyphekadion, Epinephelus fuscoguttatus, Plectropomus areolatus, Plectropomus leopardus) particularly at risk. Estimated annual grouper landings are increasing and now exceed 1000 mt. There is an urgent need to update Fiji's grouper size limits which are grossly inadequate. To build public support and increase awareness, government and nongovernmental organizations should invest in the national 4FJ Fish Smart campaign. Key management recommendations for groupers are (1) improved spatial and temporal protection of spawning aggregations and (2) increased minimum-size restrictions for capture and sale. Findings apply broadly to valuable and vulnerable coastal fin-fisheries in reef ecosystems across many Pacific Island countries and highlight the importance of using multiple data sources and approaches to understand and manage important data-poor fisheries., (© 2025 The Author(s). Journal of Fish Biology published by John Wiley & Sons Ltd on behalf of Fisheries Society of the British Isles.)
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- 2025
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5. Genetically confirmed first records of an egg and a juvenile roundscale spearfish, Tetrapturus georgii.
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Freese M, Blancke T, Marohn L, Pohlmann JD, Sundin J, Wysujack K, and Hanel R
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The roundscale spearfish (Tetrapturus georgii) is a poorly studied species with limited information available on its biology, ecology, and population status. Although the adult life stage of the species is morphologically distinguishable from closely related species such as the overexploited white marlin (Kajikia albida), misidentification is common, adding to the uncertainties connected with population assessments of these pelagic highly migratory species. Although genetic studies have recently confirmed its distinction from congeneric species, much of the reproductive biology and population dynamics of T. georgii remain unknown, underscoring the need for further research to guide conservation and management strategies. This study reports the first documented records of an egg and a juvenile T. georgii. Here, we provide photographs, morphological descriptions, and collection site data for genetically confirmed egg and juvenile specimens obtained during two multipurpose research surveys in the Sargasso Sea Subtropical Convergence Zone. These findings contribute new insights into the reproductive biology, early life stages, and ecology of this elusive species., (© 2025 The Author(s). Journal of Fish Biology published by John Wiley & Sons Ltd on behalf of Fisheries Society of the British Isles.)
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- 2025
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6. Foundations and Future Directions for Causal Inference in Ecological Research.
- Author
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Siegel K and Dee LE
- Subjects
- Ecology methods, Research Design, Causality
- Abstract
Ecology often seeks to answer causal questions, and while ecologists have a rich history of experimental approaches, novel observational data streams and the need to apply insights across naturally occurring conditions pose opportunities and challenges. Other fields have developed causal inference approaches that can enhance and expand our ability to answer ecological causal questions using observational or experimental data. However, the lack of comprehensive resources applying causal inference to ecological settings and jargon from multiple disciplines creates barriers. We introduce approaches for causal inference, discussing the main frameworks for counterfactual causal inference, how causal inference differs from other research aims and key challenges; the application of causal inference in experimental and quasi-experimental study designs; appropriate interpretation of the results of causal inference approaches given their assumptions and biases; foundational papers; and the data requirements and trade-offs between internal and external validity posed by different designs. We highlight that these designs generally prioritise internal validity over generalisability. Finally, we identify opportunities and considerations for ecologists to further integrate causal inference with synthesis science and meta-analysis and expand the spatiotemporal scales at which causal inference is possible. We advocate for ecology as a field to collectively define best practices for causal inference., (© 2025 John Wiley & Sons Ltd.)
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- 2025
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7. Contrast-Enhanced Ultrasound for Diagnosing Thyroid Nodules With Indeterminate Cytology: A Retrospective Study.
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Liu Y, Liu H, Zhan J, Chai Q, Zhu J, Ding S, and Chen L
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- Humans, Retrospective Studies, Female, Male, Middle Aged, Adult, Aged, Biopsy, Fine-Needle, ROC Curve, Thyroid Nodule diagnostic imaging, Thyroid Nodule pathology, Contrast Media, Ultrasonography methods
- Abstract
Background: A small number of thyroid nodules cannot be clearly diagnosed using ultrasound-guided fine needle aspiration biopsy. Contrast-enhanced ultrasound (CEUS) has high diagnostic performance for thyroid nodules. We explored the value of CEUS for diagnosing thyroid nodules with indeterminate cytology., Methods: Between September 2019 and July 2022, 27,646 patients with thyroid nodule(s) underwent conventional ultrasound (CUS) in our hospital. From these patients, 597 nodules were subjected to CEUS and ultrasound-guided fine needle aspiration biopsy and 116 thyroid nodules with indeterminate cytology diagnose were enrolled in this study. The independent risk factors for predicting malignancy were determined using univariate and multivariate logistic regression analyses. Receiver operating characteristic (ROC) curves were drawn for CUS, CEUS, and CEUS combined with CUS. The area under the curve (AUC) was calculated and compared., Results: Of the 116 thyroid nodules, 40 (34.5%) were benign and 76 (65.5%) were malignant. Univariate analysis showed that the shape, echogenicity, margin, microcalcification, enhancement intensity, enhancement homogeneity, wash in, and wash out were significantly different between benign and malignant thyroid nodules (all p < 0.05). Multivariate logistic regression analysis showed that taller-than-wide, irregular margin, microcalcification, hypo-enhancement, heterogeneity enhancement, synchronous/slower wash in, and synchronous/slower wash out were independent risk factors for malignancy (all p < 0.05). ROC curve analysis showed that the AUC of CUS and CEUS were 0.769 and 0.848, respectively. No significant difference was observed in the AUC between the two modalities (p > 0.05). However, the AUC (0.934) of the CUS combined with CEUS was significantly higher than that of CEUS or CUS alone (both p < 0.05)., Conclusions: CEUS is helpful in diagnosing thyroid nodules with indeterminate cytology. CUS combined with CEUS is highly valuable for predicting malignancy., (© 2024 John Wiley & Sons Ltd.)
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- 2025
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8. Intraskeletal histovariability and skeletochronology in an ornithopod dinosaur from the Maestrazgo Basin (Teruel, Spain).
- Author
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Maíllo J, Hidalgo-Sanz J, Gasca JM, Canudo JI, and Moreno-Azanza M
- Abstract
Ornithopods are an extinct group of dinosaurs that were particularly abundant and diverse in the Cretaceous of the Iberian Peninsula, and whose abundance in the Maestrazgo Basin has allowed numerous taxa to be identified over the last decade. Many of these fossil remains are still taxonomically indeterminate and require a more detailed study on both a macroscopic and microscopic scale. In this contribution, an osteohistological analysis is carried out on a partial skeleton-composed of five incomplete vertebrae, two dorsal ribs, an ischium, a fibula, and a tibia-found in the province of Aliaga (Teruel, NE Spain). We identified a progressive slowdown in tissue apposition and a variation in the type of growth marks generated in every bone, allowing a more precise identification of the ontogenetic stage of the specimen as a subadult individual. The skeletochronological correlation between the different elements also suggests that the specimen reached sexual maturity at around seven years of age and died between nine and twelve years of age. Likewise, the usefulness of the three-front model is proven for the first time in an ornithopod dinosaur, as a tool for analysing the histology expressed by the different bone elements of a single specimen and inferring their skeletochronological potential. Comparison with other ornithopod taxa reveals the great variability that each bone element shows depending on the taxon analysed, which prevents us from determining a single element suitable for studying the skeletochronology of any ornithopod taxon., (© 2025 Anatomical Society.)
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- 2025
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9. Abundance of long-chain polyunsaturated fatty acids in European eel (Anguilla anguilla L.) is determined by diet rather than biosynthesis.
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Verhelst P, Boyen J, Monroig Ó, Rigaux A, Vlaeminck B, Moens T, and De Troch M
- Abstract
The European eel (Anguilla anguilla L.) exhibits a remarkable phenotypic plasticity by occupying both marine and freshwater habitats and transitional areas in between. Because these habitats are characterized by different food sources with different fatty acid compositions, it remains unclear how eels from different habitats obtain essential long-chain polyunsaturated fatty acids (LC-PUFAs) to integrate in their lipids. We studied whether the fatty acid composition of eels in three different habitats, that is, a marine lagoon, an estuary, and a river, could be related to the expression levels of genes involved in the LC-PUFA pathways. In general, there were no significant differences in gene expression between eels from marine and freshwater habitats; gene expression in marine and freshwater specimens significantly differed from eels caught in the estuary. However, levels of essential LC-PUFAs and fatty acid ratio markers differed significantly between eels from the river and the marine lagoon. Therefore, we conclude that the LC-PUFA composition of the European eel is likely defined by their food intake from the local environment they are living in and potentially affected by the prevailing conditions, such as food availability, temperature, and salinity., (© 2025 Fisheries Society of the British Isles.)
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- 2025
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10. Determinants of adherence to obesity medication: A narrative review.
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Sharma AM, Birney S, Crotty M, Finer N, Segal-Lieberman G, Vázquez-Velázquez V, and Vrijens B
- Abstract
The increasing prevalence of obesity, complex nature of this chronic disease, and risks of developing obesity-related comorbidities outline the need for sustainable and effective management for people living with obesity. In addition to behavioral interventions, obesity medications (OMs) are increasingly considered an integral part of management of people living with obesity. OM adherence is essential to achieve the health benefits of these medications. Adherence to medications, defined as the process by which patients take their medications as prescribed, is determined by a range of factors and can be broken down into phases: initiation, implementation, and persistence (the persistence phase includes discontinuation/stopping treatment). Obesity-specific challenges exist to optimize OM adherence, which may explain varying OM adherence compared with medication for other chronic diseases (diabetes, hypertension, dyslipidemia, and osteoporosis). However, lessons can be learned from other chronic diseases to improve OM adherence, for example from type 2 diabetes and hypertension. This review aims to provide practical guidance for identifying OM- and obesity-specific determinants of adherence and discusses adherence determinants per adherence phase and obesity management phase (weight gain, weight loss, and weight stabilization/regain). This practical guidance will assist with developing obesity-specific interventions to improve OM adherence. PRACTITIONER POINTS: OMs are increasingly considered as an integral part of obesity management; however, like with all chronic disease medications, low adherence to these medications is often observed, impacting their therapeutic effect. Adherence to obesity medication can be affected at any phase of obesity management (weight gain, weight loss, and weight stabilization/regain) so considering the disease phase can help identify potential reasons for low adherence. Future initiatives to improve adherence to obesity medication should be a key focus of discussions at each opportunity with healthcare professionals, including thorough evaluation and targeted education, all in a supportive and stigma-free manner., (© 2024 The Author(s). Obesity Reviews published by John Wiley & Sons Ltd on behalf of World Obesity Federation.)
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- 2025
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11. Accurate Simulation of Flow through Dipping Aquifers with MODFLOW 6 Using Enhanced Cell Connectivity.
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Provost AM, Bardot K, Langevin CD, and McCallum JL
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In simulations of groundwater flow through dipping aquifers, layers of model cells are often "deformed" to follow the top and bottom elevations of the aquifers. When this approach is used in MODFLOW, adjacent cells within the same model layer are vertically offset from one another, and the standard conductance-based (two-point) formulation for flow between cells does not rigorously account for these offsets. The XT3D multi-point flow formulation in MODFLOW 6 is designed to account for geometric irregularities in the grid, including vertical offsets, and to provide accurate results for both isotropic and anisotropic groundwater flow. A recent study evaluated the performance of the standard formulation and XT3D using a simple, synthetic benchmark model of a steeply dipping aquifer. Although XT3D generally improved the accuracy of flow simulations relative to the standard formulation as expected, neither formulation produced accurate flows in cases that involved large vertical offsets. In this paper, we explain that the inability of XT3D to produce accurate flows in the steeply dipping aquifer benchmark was not due to an inherent limitation of the flow formulation, but rather to the limited cell connectivity inherent in the most commonly used discretization packages in MODFLOW 6. Furthermore, we demonstrate that XT3D is able to produce the expected accuracy when adequate cell connectivity is introduced using MODFLOW's unstructured grid type and the aquifer is discretized vertically using at least two model layers., (© 2025 The Author(s). Groundwater published by Wiley Periodicals LLC on behalf of National Ground Water Association. This article has been contributed to by U.S. Government employees and their work is in the public domain in the USA.)
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- 2025
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12. Evaluation of the endocranial anatomy of the early Paleogene north African gavialoid crocodylian Argochampsa krebsi and evolutionary implications for adaptation to salinity tolerance in marine crocodyliforms.
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Pligersdorffer CC, Burke PMJ, and Mannion PD
- Abstract
Argochampsa krebsi is a gavialoid crocodylian from the early Paleogene of North Africa. Based on its recovered phylogenetic relationship with South American species, it has been inferred to have been capable of transoceanic dispersal, but potential anatomical correlates for a marine lifestyle have yet to be identified. Based on CT scans of a mostly complete and well-preserved skull, we reconstruct the endocranial anatomy of Argochampsa and compare it to that of other gavialoids. We demonstrate that Argochampsa possesses concave depressions on the internal surface of the prefrontals and lacrimals, which have been inferred to represent osteological correlates for salt glands in unequivocally marine metriorhynchoid thalattosuchian crocodyliforms. The presence of these salt glands suggests that Argochampsa likely frequented pelagic environments and provides additional support for the capability of transoceanic dispersal within Gavialoidea. We also newly interpret osteological correlates for salt glands in the Miocene north African gavialoid Sutekhsuchus dowsoni, providing further support that saltwater tolerance was widespread and possibly ancestral in Gavialoidea, given that they have been previously reported in the Late Cretaceous-early Paleogene species Eosuchus lerichei and Portugalosuchus azenhae. In addition to these gavialoids, as well as metriorhynchids, we also identify these osteological salt gland correlates in the Paleocene northwest African dyrosaurid Rhabdognathus aslerensis, which represents another crocodyliform lineage thought to be capable of transoceanic dispersal. Given that dyrosaurids, gavialoids, and metriorhynchoids are distantly related lineages, the evolution of salt glands is likely a convergent ecological adaptation to the occupation of pelagic environments. Nevertheless, we demonstrate limited evaluation of the presence of these osteological correlates across Crocodyliformes, including within most extant species, such that it remains possible that they are much more widespread., (© 2024 The Author(s). Journal of Anatomy published by John Wiley & Sons Ltd on behalf of Anatomical Society.)
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- 2025
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13. Leveraging descriptor learning and functional map-based shape matching for automated anatomical Landmarking in mouse mandibles.
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Thomas OO and Maga AM
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Geometric morphometrics is used in the biological sciences to quantify morphological traits. However, the need for manual landmark placement hampers scalability, which is both time-consuming, labor-intensive, and open to human error. The selected landmarks embody a specific hypothesis regarding the critical geometry relevant to the biological question. Any adjustment to this hypothesis necessitates acquiring a new set of landmarks or revising them significantly, which can be impractical for large datasets. There is a pressing need for more efficient and flexible methods for landmark placement that can adapt to different hypotheses without requiring extensive human effort. This study investigates the precision and accuracy of landmarks derived from functional correspondences obtained through the functional map framework of geometry processing. We utilize a deep functional map network to learn shape descriptors, which enable us to achieve functional map-based and point-to-point correspondences between specimens in our dataset. Our methodology involves automating the landmarking process by interrogating these maps to identify corresponding landmarks, using manually placed landmarks from the entire dataset as a reference. We apply our method to a dataset of rodent mandibles and compare its performance to MALPACA's, a standard tool for automatic landmark placement. Our model demonstrates a speed improvement compared to MALPACA while maintaining a competitive level of accuracy. Although MALPACA typically shows the lowest RMSE, our models perform comparably well, particularly with smaller training datasets, indicating strong generalizability. Visual assessments confirm the precision of our automated landmark placements, with deviations consistently falling within an acceptable range for MALPACA estimates. Our results underscore the potential of unsupervised learning models in anatomical landmark placement, presenting a practical and efficient alternative to traditional methods. Our approach saves significant time and effort and provides the flexibility to adapt to different hypotheses about critical geometrical features without the need for manual re-acquisition of landmarks. This advancement can significantly enhance the scalability and applicability of geometric morphometrics, making it more feasible for large datasets and diverse biological studies., (© 2025 Anatomical Society.)
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- 2025
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14. Elective Aortic Surgery for Prevention of Aortic Dissection in Turner Syndrome: The Potential Impact of Updated European Society of Cardiology and International Turner Syndrome Consensus Group Guidelines on Referrals to the Heart Team.
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Bradley-Watson J, Glatzel H, Turner HE, and Orchard E
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Objective: The risk of aortic dissection is increased in Turner Syndrome (TS). Aortic dilation is thought to contribute to this risk and may be managed with elective aortic surgery. New TS guidance has lowered the aortic size thresholds for consideration of aortic surgery. We investigated the impact of new guidance on potential heart team referrals in a UK cohort of TS individuals., Methods: A cross-sectional study of 156 individuals with TS was performed. Up to date transthoracic echocardiography or cardiac MRI derived aortic dimensions, anthropometric data and the presence of aortic dissection risk factors were analysed., Results: Twenty-one individuals (13%) met updated guideline criteria for consideration of aortic surgery, 15 more than met 2016 TS guideline criteria. Use of aortic size index (ASI) and aortic height index (AHI) together identified additional individuals meeting criteria for surgical consideration compared with the use of ASI or AHI alone. Z-score identified no additional individuals for surgical consideration, nor did it reclassify any individuals into moderate or severe aortic dilation groups. Twelve of 13 individuals with moderate aortic dilation met criteria for surgical consideration due to the presence of additional risk factors for aortic dissection. There was no positive correlation between height or body surface area and ascending aorta diameter in this cohort., Conclusions: New TS guidelines are likely to significantly increase the number of individuals with TS who might be considered for elective aortic surgery. Centres caring for individuals with TS should re-evaluate their TS cohorts for aortic dissection risk considering these new guidelines., (© 2025 John Wiley & Sons Ltd.)
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- 2025
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15. Growth modeling of the European grayling (Thymallus thymallus L.) in a large alpine river based on age-at-length, mark-recapture, and length-frequency data.
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Droll J, Nagel C, Pander J, Ebert S, and Geist J
- Abstract
Animal growth is a fundamental component of population dynamics, which is closely tied to mortality, fecundity, and maturation. As a result, estimating growth often serves as the basis of population assessments. In fish, analysing growth typically involves fitting a growth model to age-at-length data derived from counting growth rings in calcified structures. Additionally, fish growth can be estimated using length-frequency data or data on changes in length derived from mark-recapture events. In our study of the European grayling (Thymallus thymallus L.) in the alpine region of Germany, we utilized all three types of datasets to develop the initial growth model. For the age-at-length data from scales, we applied the traditional von Bertalanffy growth function using both a Bayesian and a frequentist approach. Furthermore, we adopted the mark-recapture data along with the Fabens model for reparametrizing the von Bertalanffy growth model. The electronic length-frequency analysis (ELEFAN) was employed to examine the length-frequency data of the grayling, encompassing multiple sampling events from 2013 to 2022. Our findings indicated that the mark-recapture data, in conjunction with the Fabens model, yielded the most plausible values for both statistical approaches. When the von Bertalanffy growth function was used, the frequentist approach generated unreasonably high values, whereas the Bayesian version produced meaningful results when appropriate priors were applied, suggesting potential issues with the age-at-length data related to ageing. The ELEFAN approach produced the smallest yet reasonable growth parameters, contradicting other studies on the European grayling. The lower values may be attributed to the lack of larger fish in most of the sampling events, resulting in a relatively low asymptotic length and slow growth rate. As demonstrated in this case study on grayling from the River Inn, the use of growth characteristics may be a currently underestimated yet very useful indicator of target species assessment that can nicely complement other population health indicators., (© 2025 The Author(s). Journal of Fish Biology published by John Wiley & Sons Ltd on behalf of Fisheries Society of the British Isles.)
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- 2025
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16. Backward swimming in elongated-bodied abyssal demersal fishes: Synaphobranchidae, Macrouridae, and Ophidiidae.
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Priede IG and Jamieson AJ
- Abstract
The deep-sea demersal fish fauna is characterized by a prevalence of elongated-body forms with long tapering tails. Using baited camera landers at depths of 4500-6300 m in the Pacific Ocean, we observed multiple instances of backward swimming using reverse undulation of the slender body in four species: the cutthroat eel Ilyophis robinsae, abyssal grenadier Coryphaenoides yaquinae, and cusk-eels Bassozetus sp. and Barathrites iris. Backward swimming was used as an escape or repositioning maneuver, reversing for up to seven tail beats before resuming forward swimming in a new direction. The eel I. robinsae reversed with a swimming wave frequency of 0.51-0.95 Hz, wavelength 0.6-0.75 of the body length (L), and large amplitude movements of the head from side to side. C. yaquinae reversed relatively slowly at 0.21-0.52 Hz and wavelength 0.5-0.7 L aided by propulsive movements of the pectoral fins and minimal lateral movement of the head. The ophidiids also used reversed propulsive body waves augmented by paddling with the pectoral fins but with some lateral movement of the head. Pectoral-fin movements in all species were in synchrony with the body movements. The elongated-body form enables backward swimming by reversal of the anguilliform propulsive wave and has the advantage that the fish automatically returns to safety along the path recently traveled. This maneuverability conferred by an elongated body may be a significant factor in selection for body shape in deep-sea fishes., (© 2025 The Author(s). Journal of Fish Biology published by John Wiley & Sons Ltd on behalf of Fisheries Society of the British Isles.)
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- 2025
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17. The role of adipogenic niche resident cells in colorectal cancer progression in relation to obesity.
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Domagalski M, Olszańska J, Pietraszek-Gremplewicz K, and Nowak D
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Colorectal cancer (CRC) is the third most common cancer worldwide and has one of the highest mortality rates. Considering its nonlinear etiology, many risk factors are associated with CRC formation and development, with obesity at the forefront. Obesity is regarded as one of the key environmental risk determinants for the pathogenesis of CRC. Excessive food intake and a sedentary lifestyle, together with genetic predispositions, lead to the overgrowth of adipose tissue along with a disruption in the number and function of its building cells. Adipose tissue-resident cells may constitute part of the CRC microenvironment. Alterations in their physiology and secretory profiles observed in obesity may further contribute to CRC progression, and despite similar localization, their contributions are not equivalent. They can interact with CRC cells, either directly or indirectly, influencing various processes that contribute to tumorigenesis. The main aim of this review is to provide insights into the diversity of adipose tissue resident cells, namely, adipocytes, adipose stromal cells, and immunological cells, regarding the role of particular cell types in co-forming the CRC microenvironment. The scope of this study was also devoted to the abnormalities in adipose tissue physiology observed in obesity states and their impact on CRC development., (© 2025 The Author(s). Obesity Reviews published by John Wiley & Sons Ltd on behalf of World Obesity Federation.)
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- 2025
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18. Impact of selenium supplementation on antioxidant enzyme activity and liver gene expression in juvenile pangasius catfish (Pangasius pangasius).
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Thangarani AJ, Felix N, Suresh AV, Shanmugam SA, Kathirvelpandian A, Suresh E, Ramya R, Ranjan A, Prabu E, and Suman TY
- Abstract
This study examined the effect of dietary selenium (Se) fortification on growth efficiency, antioxidant status, and liver gene expression in juvenile pangasius catfish. Sodium selenite was incorporated into a basal diet at incremental levels of 0-2.0 mg Se/kg. This resulted in final Se concentrations of 0.63, 0.85, 1.15, 1.68, 2.10, and 2.65 mg Se/kg, respectively. A total of 15 fish, with an average individual weight of 5.6 ± 0.1 g, were subjected to one of six dietary treatments and fed in triplicate over a 60-day period. A significant dose-related enhancement in growth performance was observed, with the optimal dietary Se requirement estimated at 1.75 mg Se/kg. Se-fortified diet significantly increased the activities of digestive enzymes (lipase and protease) as well as antioxidant enzymes, including catalase, glutathione peroxidase, and superoxide dismutase in the liver. Notably, the group fed 1.68 mg Se/kg displayed the highest levels of these enzymes. Additionally, selenium supplementation resulted in an upregulation of the relative expression of insulin-like growth factor 1X1 and 1X2 in the liver, highlighting its pivotal role in growth regulation. Blood parameters showed significant improvements in mean corpuscular hemoglobin and hemoglobin levels with Se supplementation. Proximate analysis showed increasing Se intake resulted in a significant rise in muscle protein content. In pangasius catfish, our results indicate that dietary selenium supplementation can enhance growth efficiency, antioxidant capacity, and hepatic gene expression., (© 2025 Fisheries Society of the British Isles.)
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- 2025
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19. Identifying the Knowledge and Capacity Gaps in Southeast Asian Insect Conservation.
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Ong XR, Tan B, Chang CH, Puniamoorthy N, and Slade EM
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- Animals, Asia, Southeastern, Biodiversity, Conservation of Natural Resources, Insecta physiology
- Abstract
Insects represent most of terrestrial animal biodiversity, and multiple reports suggest that their populations are declining globally due to anthropogenic impacts. Yet, a high proportion of insect species remain undescribed and limited data on their population dynamics hamper insect conservation efforts. This is particularly critical in tropical biodiversity hotspots such as Southeast Asia. To identify knowledge and capacity gaps in Southeast Asian insect conservation, we performed a quantitative review of insect occurrence records, studies for the region and global '#conservation' posts from Twitter. We found that occurrence records increased over time, and were dominated by butterflies. Overall, studies were largely focused on pest and vector groups, and insect conservation and ecology studies were lacking in many countries. Despite an increase in local authorships and funding sources over time, the majority of these were still located outside of Southeast Asia. In '#conservation' posts, insects were highly under-represented and insect-related content was biased towards popular groups such as bees and butterflies. We suggest potential solutions to address these gaps, such as integrative taxonomic approaches, and increasing regional collaborations and public engagements. Crucially, we stress the need for political will and funding to overcome the impediments towards insect conservation efforts in Southeast Asia., (© 2024 John Wiley & Sons Ltd.)
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- 2025
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20. Utility of an Instantaneous Salt Dilution Method for Measuring Streamflow in Headwater Streams.
- Author
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Rogers KM, Fair JB, Hitt NP, Kessler KG, Kelly ZA, and Briggs M
- Subjects
- Sodium Chloride, Groundwater, Rivers, Water Movements, Environmental Monitoring methods
- Abstract
Streamflow records are biased toward large streams and rivers, yet small headwater streams are often the focus of ecological research in response to climate change. Conventional flow measurement instruments such as acoustic Doppler velocimeters (ADVs) do not perform well during low-flow conditions in small streams, truncating the development of rating curves during critical baseflow conditions dominated by groundwater inflow. We revisited an instantaneous solute tracer injection method as an alternative to ADVs based on paired measurements to compare their precision, efficiency, and feasibility within headwater streams across a range of flow conditions. We show that the precision of discharge measurements using salt dilution by slug injection and ADV methods were comparable overall, but salt dilution was more precise during the lowest flows and required less time to implement. Often, headwater streams were at or below the depth threshold where ADV measurements could even be attempted and transects were complicated by coarse bed material and cobbles. We discuss the methodological benefits and limitations of salt dilution by slug injection and conclude that the method could facilitate a proliferation of streamflow observation across headwater stream networks that are highly undersampled compared to larger streams., (Published 2024. This article is a U.S. Government work and is in the public domain in the USA.)
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- 2025
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21. Numerical Modeling of Recovery of Moisture from the Unsaturated Zone: A Feasibility Study.
- Author
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Mukhopadhyay A, Akber A, and Bhandary H
- Subjects
- Kuwait, Soil chemistry, Groundwater, Water Movements, Feasibility Studies, Models, Theoretical
- Abstract
Numerical modeling of the recovery of moisture by injecting warm air in the unsaturated zone in a 100 m × 100 m plot of agricultural land in Kuwait, a country located in an arid environment, was conducted to provide "proof of concept" of the technique. If technically and economically feasible, it will be a potential additional source of water that could be exploited for farming activities and other uses. The COMSOL software was used to develop the model and, based on the results of the scenario runs, the effects of different hydraulic and operational parameters, including that of well spacing, on moisture recovery were assessed. In general, the results suggested that the recovery should increase with the increase in the hydraulic conductivity of the unsaturated zone, the amount of heat input, and the pressure differential between the unsaturated zone and the well head. Within the period examined (0 to 11 days), the recovery decreases with the increase in the soil moisture content, possibly due to the fall in relative permeability to moisture-rich air with the increased water contents in the pore spaces, although the effects may change over a longer period as water contents decrease with moisture recovery. The moisture recovery from the unsaturated zone through the injection of warm air appears to be a feasible proposition from this study that should be demonstrated through a pilot scale experiment in the field., (© 2024 National Ground Water Association.)
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- 2025
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22. Development and clinical application of bioelectrical impedance analysis method for body composition assessment.
- Author
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Son JW, Han BD, Bennett JP, Heymsfield S, and Lim S
- Subjects
- Humans, Electric Impedance, Body Composition physiology, Sarcopenia diagnosis, Obesity physiopathology
- Abstract
Obesity, which is characterized by excessive body fat, increases the risk of chronic diseases, such as type 2 diabetes, cardiovascular diseases, and certain cancers. Sarcopenia, a decline in muscle mass, is also associated with many chronic disorders and is therefore a major concern in aging populations. Body composition analysis is important in the evaluation of obesity and sarcopenia because it provides information about the distribution of body fat and muscle mass. It is also useful for monitoring nutritional status, disease severity, and the effectiveness of interventions, such as exercise, diet, and drugs, and thus helps assess overall health and longevity. Computed tomography, magnetic resonance imaging, and dual-energy X-ray absorptiometry are commonly used for this purpose. However, they have limitations, such as high cost, long measurement time, and radiation exposure. Instead, bioelectrical impedance analysis (BIA), which was introduced several decades ago and has undergone significant technological advancements, can be used. It is easily accessible, affordable, and importantly, poses no radiation risk, making it suitable for use in hospitals, fitness centers, and even at home. Herein, we review the recent technological developments and clinical applications of BIA to provide an updated understanding of BIA technology and its strengths and limitations., (© 2024 World Obesity Federation.)
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- 2025
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23. "Am I in 'Suboptimal Health'?": The Narratives and Rhetoric in Carving out the Grey Area Between Health and Illness in Everyday Life.
- Author
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Cheng L
- Subjects
- Humans, China, Female, Health Status, Anthropology, Cultural, Male, Adult, Medicine, Chinese Traditional, Social Media, Narration
- Abstract
This paper examines the concept of 'suboptimal health' (subhealth, ), a term popularised by traditional Chinese medicine (TCM) professionals and widely used in public health discourses in China at the turn of the century. Despite criticisms of it being a commercial buzzword, subhealth provides a unique lens for individuals to articulate their health experiences concerning work and life pressures. Through virtual ethnography on Chinese social media such as Weibo and interviews, this study explores the usage and implications of subhealth in everyday life. It particularly focuses on how young Chinese people employ this concept to navigate and express health-related issues. Drawing on Leder's concept of the lived body, as well as literature on illness narratives and the sociology of diagnosis and risk, the study argues that attention to the everyday narratives of subhealth could potentially open up a space for a greater range of narratives of embodiment and might even offer a space for collective critique in a context often dominated by individual responsibility narratives. In some cases, it also enables private and public narratives that critique lifestyle factors detrimental to health. Ultimately, this paper hints at the conceptualisation of "subhealth narratives" as a research framework., (© 2025 The Author(s). Sociology of Health & Illness published by John Wiley & Sons Ltd on behalf of Foundation for the Sociology of Health & Illness.)
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- 2025
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24. Understanding barriers and facilitators to lifestyle management in people with polycystic ovary syndrome: A mixed method systematic review.
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McGowan M, Garad R, Wadhwani G, Torkel S, Rao V, Maunder A, Osei-Safo EK, Moran LJ, and Cowan S
- Subjects
- Humans, Female, Exercise psychology, Health Personnel psychology, Polycystic Ovary Syndrome therapy, Polycystic Ovary Syndrome psychology, Life Style
- Abstract
Polycystic ovary syndrome (PCOS) is an endocrine disorder affecting 10-13% of reproductive-aged women. Lifestyle management through diet and physical activity changes can improve reproductive, metabolic, and psychological comorbidities. The aim of this systematic review is to understand the barriers and facilitators to lifestyle changes from the perspective of people with PCOS and health care professionals (HCP) using the theoretical domains framework and capability, opportunity, motivation, and behavior model. Six databases were systematically searched for qualitative, quantitative, and mixed-methods studies to 22nd September 2022. Quantitative outcomes from quantitative and mixed-methods studies were narratively synthesized and all studies were thematically analyzed. Sixty-eight papers met the eligibility criteria. HCP education on lifestyle management in PCOS was viewed by all to be inadequate, impacting the quality of care and health outcomes. Lifestyle advice delivered by a multidisciplinary team, including dietitians, was identified as a key component for change. All agreed that there was a need for individualized and PCOS-specific lifestyle advice. Weight stigma was identified as negatively impacting both those in larger and smaller bodies with PCOS, reducing the quality of care and affecting self-perception and mental health. People with PCOS perceived that lifestyle management was overly focused on weight loss and fertility, independent of their own personal motivations and goals. Systemic changes, including increasing HCP education on lifestyle management and multidisciplinary collaboration, focusing on lifestyle advice that meets individual needs, and reducing the use of weight-centric care are necessary for long-term sustainable changes and improvements in health outcomes in people with PCOS., (© 2024 World Obesity Federation.)
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- 2025
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25. Behavior change techniques in low-calorie and very low-calorie diet interventions for weight loss: A systematic review with meta-analysis.
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Evans TS, Dhir P, Matu J, Radley D, Hill AJ, Jones A, Newson L, Freeman C, Kolokotroni KZ, Fozard T, and Ells LJ
- Abstract
Background: There is limited evidence and clinical guidelines on the behavior change support required for low-calorie diet programs. This systematic review aimed to establish the behavior change technique(s) (BCT) implemented in weight loss interventions (≤1200 kcal/d) and how these contribute to effectiveness., Methods: Databases were searched from inception to April 2022. Screening, data extraction, BCT coding, and quality appraisal were conducted in duplicate using the Template for Intervention Description and Replication framework, Behavior Change Technique Taxonomy, and Cochrane Risk of Bias 2 tool. Data were analyzed via narrative synthesis and random effects multi-level meta-analyses., Results: Thirty-two papers reporting on 27 studies were included. Twenty-four BCTs were identified across studies. Eight BCTs were significantly associated with a larger reduction in weight at the end-of-diet time-point; one BCT was statistically significant at the end of weight maintenance. Physical activity, Type 2 Diabetes, and BMI category moderated intervention effects., Conclusions and Implications: This is the first meta-analysis to examine how specific BCTs contribute to the effectiveness of low-calorie diets. It is recommended that a) these findings are used to develop clinical guidelines specific to behavioral support in low-calorie diet programs, and b) program commissioners stipulate the use of these BCTs in their service specifications., (© 2025 The Author(s). Obesity Reviews published by John Wiley & Sons Ltd on behalf of World Obesity Federation.)
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- 2025
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26. Long legs and small joints: The locomotor capabilities of Homo naledi.
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Chapman TJ, Walker C, Churchill SE, Marchi D, Vereecke EE, DeSilva JM, Zipfel B, Hawks J, Jan SVS, Berger LR, and Throckmorton Z
- Abstract
24 January 2025: This paper was inadvertently published prematurely before all proof corrections had been finalized. It has been temporarily unpublished while this is rectified., (© 2025 Anatomical Society.)
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- 2025
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27. Association between 24-hour movement behaviors and adiposity in children and adolescents: A compositional data meta-analysis.
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Bourke M, Harrison Z, Fortnum K, Thomas G, O'Flaherty M, Mulcahy SK, Gomersall SR, Alsop T, Trost SG, Koplin JJ, Bruijns BA, Phillips SM, Vanderloo LM, Tucker P, Hesketh KD, Kwan MYW, and Cairney J
- Abstract
Purpose: To quantitatively synthesize published evidence on the association between 24-hour movement behavior composition with adiposity in children and adolescents aged 3-18 years., Methods: Systematic literature searches were conducted in five electronic databases to identify papers published between January 2015 and January 2024. A machine learning-assisted systematic review was conducted to identify studies applying compositional data analysis to examine the association between 24-hour movement behaviors and adiposity in children and youth. Random effect meta-analyses were estimated to examine the relative association between each component of the 24-hour movement behavior composition and body mass index z-score (zBMI), waist circumference, fat mass percentage, and fat mass index (FMI)., Results: A total of 16 studies reporting on 15,230 children and youth were included in the review. Most studies reported on zBMI (k = 14), followed by waist circumference (k = 5), body fat percentage (k = 3), and FMI (k = 2). Spending more time sleeping and engaged in moderate-to-vigorous intensity physical activity (MVPA) relative to other behaviors was associated with lower adiposity, while spending more time sedentary and engaged in light-intensity physical activity was associated with higher adiposity., Conclusion: These results provide support for most recommendations of the 24-hour movement behavior guidelines, including getting an adequate amount of sleep, limiting sedentary time, and engaging in MVPA, to improve adiposity outcomes., (© 2025 The Author(s). Obesity Reviews published by John Wiley & Sons Ltd on behalf of World Obesity Federation.)
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- 2025
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28. Pollution, stress response, and obesity: A systematic review.
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El Kouche S, Halvick S, Morel C, Duca RC, van Nieuwenhuyse A, Turner JD, Grova N, and Meyre D
- Abstract
Limited literature addresses the association between pollution, stress, and obesity, and knowledge synthesis on the associations between these three topics has yet to be made. Two reviewers independently conducted a systematic review of MEDLINE, Embase, and Web of Science Core Collection databases to identify studies dealing with the effects of semi-volatile organic compounds, pesticides, conservatives, and heavy metals on the psychosocial stress response and adiposity in humans, animals, and cells. The quality of papers and risk assessment were evaluated with ToxRTool, BEES-C instrument score, SYRCLE's risk of bias tool, and CAMARADES checklist. A protocol for the systematic review was registered on PROSPERO. Of 1869 identified references, 63 were eligible after title and abstract screening, 42 after full-text reading, and risk of bias and quality assessment. An important body of evidence shows a positive association between pollution, stress response, and obesity. Pollution stimulates the hypothalamic-pituitary-adrenal axis by activating the glucocorticoid receptor signaling and transcriptional factors responsible for adipocyte differentiation, hyperphagia, and obesity. Endocrine-disrupting chemicals also alter the Peroxisome Proliferator-activated Receptor gamma pathway to promote adipocyte hyperplasia and hypertrophy. However, these associations depend on sex, age, and pollutant type. Our findings evidence that pollution promotes stress, leading to obesity., (© 2025 The Author(s). Obesity Reviews published by John Wiley & Sons Ltd on behalf of World Obesity Federation.)
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- 2025
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29. Dissolved Inorganic Carbon Evolution of Sediment Porewater in the Huixian Wetland, Southwest China.
- Author
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Li J, Pan X, Chen H, Huang C, and Cheng R
- Abstract
Wetlands, as crucial terrestrial carbon reservoirs, have recently suffered severe degradation due to intense human activities. Lacustrine sediments serve as vital indicators for understanding wetland environmental changes. In the current paper, porewater samples were extracted from lacustrine sediment in three boreholes with a depth of ~75 cm in the Huixian karst wetland, southwest China, to study the chemical and dissolved inorganic carbon (DIC) evolution under anthropogenic influence. Two boreholes are situated beneath the Mudong Lake, while the other one is in the degraded wetland area. The results show that porewater in the central region of Mudong Lake is natural HCO
3 -Ca type water and recharged by karst groundwater as evidenced by depleted2 H -18 O isotopes. Methanogenesis prevails in this area, suggested by positive δ13 C values ranging from 4.29‰ to 7.05‰. However, shallow porewater at the western edge of Mudong Lake and porewater in the degraded wetland exhibit significantly higher concentrations of NO3 - and SO4 2- , resulting from the agricultural input and recharged groundwater influenced by oxidation of pyrite. These processes lead to a decrease in methane production and generate DIC through degradation of organic fertilizer and carbonate weathering by sulfuric acid, thereby significantly altering porewater δ13 C values. Two types of DIC mixing processes were observed based on the increasing δ13 C values with depth, which can be attributed to the unique karst groundwater subsystems. This work highlights the potential impact of human-induced porewater chemical variations on the fate of DIC, particularly in karst wetland environments., (© 2025 National Ground Water Association.)- Published
- 2025
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30. A novel workflow for multi-modal imaging of musculoskeletal tissues.
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König A, Cavanagh BL, Amado I, Kalra A, Ogon BA, Hinton PV, and Kennedy OD
- Abstract
According to the World Health Organization (WHO) musculoskeletal conditions are a leading contributor to disability worldwide. This fact is often somewhat overlooked, since musculoskeletal conditions are less likely to be associated with mortality. Nonetheless, treatments, therapies and management of these conditions are extremely costly to national healthcare systems. As with all systemic conditions, biomedical imaging of relevant tissues plays a major role in understanding the fundamental biological processes involved in musculoskeletal health. However, the skeletal system with its relatively large proportion of dense, opaque (often mineralised) tissues can often be more challenging to image, and recently important advances have been made in imaging these complex musculoskeletal tissues. Thus, we here describe a novel workflow in which recent advanced imaging techniques have been modified and optimised for use in musculoskeletal tissues (specifically bone and cartilage). This will allow for investigations, of different phases of these tissues, at new and higher resolutions. Furthermore, the process has been designed to fit with the existing and standard processes which are typically used with these samples (i.e. μCT imaging and standard histology). The additional modalities which have been included here are second harmonic generation (SHG) imaging, tissue clearing, specifically the Passive Clear Lipid-exchanged Acrylamide-hybridised Rigid Imaging Tissue hYdrogel (CLARITY) method known as PACT, and then imaging of these tissues with confocal, multiphoton and light-sheet microscopy. This paper serves to introduce a combination of existing new methods and improvements in imaging of musculoskeletal tissues., (© 2025 The Author(s). Journal of Anatomy published by John Wiley & Sons Ltd on behalf of Anatomical Society.)
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- 2025
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31. Stigma and the Inverse Care Law: Experiences of 'Care' for People Living in Marginalised Conditions.
- Author
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Addison M, Scott S, Bambra C, and Lhussier M
- Subjects
- Humans, Female, Male, England, Adult, Interviews as Topic, Qualitative Research, Middle Aged, Quality of Health Care, Substance-Related Disorders psychology, Illicit Drugs, Waiting Lists, Social Stigma, Health Services Accessibility
- Abstract
This paper explores the connection between stigma and the Inverse Care Law (ICL) by focussing on the idea that people who have the greatest needs often have the least support from healthcare services. Twenty-four semi-structured interviews were undertaken with people who used class A & B illicit drugs, in the northeast of England. Many of the people in this study who used illicit drugs were not able to access quality healthcare in a timely way to meet their needs because of structural and relational stigma. We discuss four themes: (i) pressure on health services and long waiting lists, (ii) sensitivity to compassion fatigue from staff and impacts on engagement, (iii) complex systems that are difficult to navigate and (iv) stigma and drug use. These themes illuminate the harms of stigma and support Tudor Hart's ICL. Stigma is a key contributor to the inverse experience of good quality healthcare and requires greater attention from policymakers and practitioners. The structural and relational aspects of stigma embedded in healthcare are central to the ICL and reproduce inequities in access to and experience of good quality healthcare, which in turn impacts health inequalities., (© 2025 The Author(s). Sociology of Health & Illness published by John Wiley & Sons Ltd on behalf of Foundation for the Sociology of Health & Illness.)
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- 2025
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32. Health inequalities and contemporary youth: Young people's accounts of the social determinants of health in an 'austere meritocracy'.
- Author
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Fergie G, Smith K, Vaczy C, Mackenzie M, and Hilton S
- Subjects
- Humans, Adolescent, Female, Male, United Kingdom, Socioeconomic Factors, Young Adult, Social Determinants of Health, Qualitative Research, Health Status Disparities
- Abstract
Young people coming of age amidst widespread socioeconomic uncertainty have a unique vantage from which to interpret how social, economic and environmental factors might influence health and the generation of health inequalities. Despite this, only a small number of existing studies of 'lay' understandings of health inequalities have focused on young people. This arts-based qualitative study builds on that body of research, in the context of the UK, to explore how young people make sense of health inequalities. Across two sites, Glasgow and Leeds, six groups of young people (39 in total) took part in online workshops to explore their perspectives. Throughout they engaged with population health research evidence; contributed to group discussions and responded creatively, via visual and performance art and by articulating their own views and experiences. In this paper, we explore how individual and structural explanations for health inequalities emerged, employing concepts from sociological studies of youth to shed light on these accounts. In particular, we argue that the concept of 'austere meritocracy', the persistence of narratives of aspiration and hard work as key to success against an increasingly hostile socio-economic backdrop, helps explain young people's perspectives on health inequalities in the UK., (© 2024 The Author(s). Sociology of Health & Illness published by John Wiley & Sons Ltd on behalf of Foundation for the Sociology of Health & Illness.)
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- 2025
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33. Hearing the Silence and Silenced: Co-Producing Research on Infant-Feeding Experiences and Practices With Black Women With HIV.
- Author
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Kasadha B, Tariq S, Namiba A, Freeman-Romilly N, Moepi N, Letting G, and Rai T
- Subjects
- Adult, Female, Humans, Infant, Infant, Newborn, Infectious Disease Transmission, Vertical prevention & control, Qualitative Research, United Kingdom, Black People psychology, Breast Feeding psychology, HIV Infections psychology
- Abstract
In the UK, up to 700 people with HIV give birth annually; the majority are Black African migrant cisgender women. Infant-feeding decisions for parents with HIV are complex, requiring parents to weigh-up the small risk of HIV transmission via breastmilk and UK guidelines recommending formula milk, against strong personal and societal expectations to breastfeed. We explored this situation in a qualitative study. In this paper, we discuss our experiences of co-producing our research on infant-feeding experiences and practices among women with HIV. In particular, we focus on how our methodology, working practices and team structure enabled us to hear and describe the 'silences' and 'screaming silences' faced by our socially marginalised study participants. For the participants, intense multidimensional anxieties regarding infant-feeding had to be managed within a wider context and with people who were largely unaware of the potentially devastating impact that decision had on their reality. Our interdisciplinary study team and advisory panel comprised women with HIV, clinicians, policymakers and academics; the majority were racially minoritised women. Through regular team meetings, respect for the varied perspectives of all contributors and diverse dissemination routes, we sustained relational ethics with a broad range of stakeholders and impacted national policy., (© 2025 The Author(s). Sociology of Health & Illness published by John Wiley & Sons Ltd on behalf of Foundation for the Sociology of Health & Illness.)
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- 2025
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34. The Political Sociology of NICE: Investigating Pharmaceutical Cost-Effectiveness Regulation in the UK.
- Author
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Abraham J and Balendran G
- Subjects
- United Kingdom, Humans, Health Policy, Conflict of Interest, Cost-Benefit Analysis, Drug Industry economics, State Medicine economics, Politics
- Abstract
The National Institute for Health and Care Excellence (NICE) was established a quarter of a century ago in 1999 to regulate the cost-effectiveness of pharmaceuticals (and other health technologies) for the NHS. Drawing on medical sociology theories of corporate bias, neoliberalism, pluralism/polycentricity and regulatory capture, the purpose of this article is to examine the applicability of those theories to NICE as a key regulatory agency in the UK health system. Based on approximately 7 years of documentary research, interviews with expert informants and observations of NICE-related meetings, this paper focuses particularly on NICE's relationship with the interests of the pharmaceutical industry compared with other stakeholder interests at the meso-organisational level. Consideration of the interaction between the UK Government and the pharmaceutical industry in relation to NICE is presented together with the analysis of revolving doors and conflicts of interest of NICE experts/advisors. The nature of policy changes over time (e.g. accelerated assessment pathways and industry fees for regulatory appraisals) and how they relate to the relevant stakeholder interests is also investigated. It is concluded that NICE is largely characterised by neoliberal corporate bias, though some elements of its organisation are also consistent with theories of capture, pluralism and polycentricity., (© 2025 The Author(s). Sociology of Health & Illness published by John Wiley & Sons Ltd on behalf of Foundation for the Sociology of Health & Illness.)
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- 2025
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35. Surviving in the midst of 'Nowhere': Disrupting the conceptualisation of a maternity care desert.
- Author
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Archer RE
- Subjects
- Female, Humans, Pregnancy, Black or African American psychology, Florida, Health Equity, Health Services Accessibility, Healthcare Disparities, Interviews as Topic, Qualitative Research, Rural Population, Maternal Health Services
- Abstract
The conceptualisation of 'care deserts' has gained increased public attention in recent years. This paper engages a reproductive justice framework to investigate the (mis)alignment of a maternity care desert within a predominantly Black rural community in the United States. I draw on a case study of Gadsden County, Florida-a community that is perceived by its members to be a maternity care desert but that is not technically defined as one-to demonstrate how Black birthing people are cultivating a reproductive liberatory consciousness. Semi-structured interviews with birthing persons and reproductive health experts reveal three overarching processes-naming barriers to health equity, resisting health inequity and cultivating health equity-that characterise a reproductive liberatory consciousness, which I identify as an analytical tool to outline how local social actors are identifying structural constraints as well as developing strategies of communal care and resistance. This work contributes to sociological research on reproductive justice and health equity by exploring the limitations of 'desert' frameworks. Pointing to the need to carefully consider the mechanisms that actively disrupt and potentially transform spatial stratifications and inequities, this paper advances a new understanding of birthing space that captures the layered movements of those living within a perceived maternity care desert., (© 2024 Foundation for the Sociology of Health & Illness.)
- Published
- 2025
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36. The Role of Boundary Spanning in Building Trust: A Place-Based Study on Engaging Hardly Reached Groups in Community Healthcare Settings.
- Author
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Bianchi L, Kelemen M, Shivji AK, Tallant J, and Timmons S
- Subjects
- Humans, Community Health Services organization & administration, Communication, England, Healthcare Disparities, Trust
- Abstract
This paper investigates the impact of boundary spanning activities on building trust as a means of tackling health inequalities in hardly reached communities. Lack of trust has been identified as a barrier to engagement with healthcare services, resulting in poorer health outcomes. Engaging with hardly reached communities is challenging due to the social and symbolic boundaries prevalent in community healthcare settings. Drawing on empirical data from a recent year-long collaborative research project with communities from seven economically deprived areas in the City of Nottingham, we identify two boundary spanning activities that facilitate the development of trust: communication across boundaries and intergroup relationship building. By cross fertilising sociological accounts on trust with insights derived from philosophy, the study finds that for hardly reached communities, trusting relevant individuals is more potent and widespread than the trust they have in healthcare institutions. By developing individual trust, hardly reached communities are more likely to consequently perceive the existence of institutional goodwill and competence. This counter-intuitive finding invites us to regard trust as context specific and relational rather than as a binary choice between trusting individuals or institutions and to situate cross boundary activities focused on trust development within the power asymmetries in which they unfold., (© 2024 The Author(s). Sociology of Health & Illness published by John Wiley & Sons Ltd on behalf of Foundation for the Sociology of Health & Illness.)
- Published
- 2025
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37. Negotiating Care: The Biographical Narratives of Young Adults Who Questioned Their Gender When Younger.
- Author
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Atkin K and Jackson-Taylor C
- Subjects
- Humans, Male, Female, Adult, Young Adult, United Kingdom, Narration, Negotiating, Gender Identity
- Abstract
Current discussions about gender identity are increasingly politicised, particularly in the UK. An individual's body becomes a site of competing interests that attempt to regulate the physical, social and moral boundaries between biological sex and a socially realised gender. Care becomes defined within this context. The emerging biopolitics generates dividing practices that classify and regulate rather than situate a knowing subject, who is creatively and actively responsive. In response, our paper explores the value of biographical narratives when understanding how young adults negotiate their identity, within the context of social relationships and normative conventions, when experiencing (and articulating) gender questioning. Using testimonial experience from 18 young adults, aged between 19 and 30 years old, our analysis discusses participants' response to gender questioning before engaging with their exploration of gender, from childhood through to the present day. We consider how these young adults resolve gender questioning through reflexive engagement, seek legitimation and negotiate the response of others, as they seek care. Our conclusion, by providing insights into an actively constituted biographical experience, assesses the possibilities associated with more inclusive caring practices, in which an individual can flourish., (© 2024 The Author(s). Sociology of Health & Illness published by John Wiley & Sons Ltd on behalf of Foundation for the Sociology of Health & Illness.)
- Published
- 2025
- Full Text
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38. The social value of place-based creative wellbeing: A rapid review and evidence synthesis.
- Author
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Ganga RN, Davies L, Wilson K, and Musella M
- Subjects
- Humans, United Kingdom, Europe, Socioeconomic Factors, Social Determinants of Health, Art, Creativity, Social Values
- Abstract
Creative well-being is an increasing field of interest to which biomedical and social sciences have made uneven contributions. The instrumental value of culture and its subsequential public investment is grounded in the interplay of social, cultural and economic capital to attain and preserve wellbeing and health and foster social mobility. The current evidence addresses the effectiveness of arts interventions in improving illnesses. Little attention has been paid to the social value of creative wellbeing for the general population. This paper is a rapid review and evidence synthesis that aims to answer the question, 'What is the social value of place-based arts and culture interventions at individual (wellbeing) and community (social inequalities) levels in the UK and Europe?'. After a systematic search of five databases, search engines, and a call for evidence in August 2022, 14 out of 974 sources met the inclusion criteria. Studies were organised into three themes (Community, Events, Museums), and outcomes were analysed considering the indicators and dimensions of wellbeing (Office for National Statistics). The review evidenced that creative wellbeing leads to improvements in wellbeing outcomes and can contribute to alleviating social determinants of health. However, considering their impact on the underlying causes of structural social inequalities requires caution., (© 2024 The Author(s). Sociology of Health & Illness published by John Wiley & Sons Ltd on behalf of Foundation for the Sociology of Health & Illness.)
- Published
- 2025
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39. From Isolation to Social (and Psychedelic) Integration: A Sociology of Collective Effervescence and Therapeutic Community in Psychedelic-Assisted Therapy.
- Author
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Rose JR
- Subjects
- Humans, Male, Female, Therapeutic Community, Anthropology, Cultural, Adult, Sociology, Social Isolation, Hallucinogens therapeutic use
- Abstract
There is a disparity between contemporary scientific investigations into psychedelic phenomena and their 20
th -century counterparts, notably the lack of examination of psychedelic experiences within group settings. Whereas early research studies from the 1950s to the 1970s explored communal settings in psychedelic-assisted therapy (PAT), today's resurgence of scholarship in the field primarily considers individualised, often clinical, settings. Consequently, there is an absence of empirical research and theoretical innovation on collective psychedelic contexts, for example, how social connectedness occurs relationally and what its impacts are. This paper addresses this gap by revisiting and applying Emile Durkheim's theory of "collective effervescence." By analysing interview data from participants of a group-based weeklong PAT retreat and supplementing it with ethnographic data, this study highlights the usefulness of incorporating sociological theory to examine and explain the social dynamics and therapeutic outcomes of collective psychedelic experiences. In doing so, this research study contributes to bridging the divide between psychedelic science, psychedelic studies and the social sciences by offering sociological insight into the transformative yet hitherto neglected potential of group-based psychedelic events for therapeutic benefits., (© 2024 Foundation for the Sociology of Health & Illness.)- Published
- 2025
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40. Interpersonal determinants of diet quality and eating behaviors in people aged 13-30 years: A systematic scoping review.
- Author
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Braune T, Kudlek L, Xiao C, Tang H, Demers-Potvin É, Harris HA, Fitzsimons-West E, Adams J, and Winpenny EM
- Subjects
- Humans, Adolescent, Young Adult, Adult, Parenting psychology, Interpersonal Relations, Social Support, Feeding Behavior psychology, Diet psychology
- Abstract
Adolescence is an important period of increasing independence, when adolescents experience changing influences of family and friends on their diets as they transition into adulthood. We conducted a scoping review to map the literature on interpersonal determinants of diet quality and eating behaviors among individuals aged 13-30 years. We searched seven literature databases, and following screening, 329 papers were included. Determinants were grouped according to sub-categories of the Determinants of Nutrition and Eating framework: family structure (n = 122), social influences (n = 121), parental behaviors (n = 90), family food culture (n = 83), social support (n = 69), parental feeding styles (n = 24), parental attitudes/beliefs (n = 8), and parental resources/risk factors (n = 6), and we added two new sub-categories: parenting style (n = 74) and partner behaviors (n = 6). Fruit/vegetable (n = 143) and sugar-sweetened beverage (n = 102) intake were the most commonly measured diet outcomes, and breakfast consumption (n = 41) and fast food/takeaway intake (n = 39) the most commonly examined eating behaviors. This review highlights the gaps in the literature, both across the determinant sub-categories and also the relative paucity of longitudinal evidence and lack of evidence in emerging adults, particularly outside of university settings. Future research should focus on these areas to provide stronger evidence to support better design of interventions for this age group., (© 2024 The Author(s). Obesity Reviews published by John Wiley & Sons Ltd on behalf of World Obesity Federation.)
- Published
- 2025
- Full Text
- View/download PDF
41. The challenges of coeliac disease at work: A contestation of the politics of inclusion.
- Author
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Steinhoff A, Warren R, Carter D, and Glynos J
- Subjects
- Humans, United Kingdom, Politics, Employment, Female, Male, Celiac Disease psychology, Workplace psychology
- Abstract
By focusing on the experiences of employees living with coeliac disease as evidenced in UK employment tribunal cases, this paper interrogates the way practices of exclusion are performed in legal and organisational contexts that purport to promote values of inclusion. In paying attention to how differences are constructed and negotiated, the paper unpacks the way organisational practices mobilise an array of workplace mechanisms to produce complex dynamics of exclusion. Applying Laclau and Mouffe's logics of equivalence and difference, we show how questionable impulses and practices emerge in a workplace environment characterised by unclarity and vagueness. One impulse, for example, involves privatising and individualising the condition of employees with coeliac disease, giving rise to patronising and stigmatising attitudes that can turn them into victims. However, we also identify workplace mechanisms countering these tendencies, which can underpin forms of collective support in the struggle for recognition. Our study thus contributes to the body of sociological literature that pays attention to health-related workplace injustices by challenging the purported promotion of health-based inclusion through a focus on tribunal cases, leading to suggestions for further research into the way medical conditions are theorised and 'lived' at work., (© 2024 The Author(s). Sociology of Health & Illness published by John Wiley & Sons Ltd on behalf of Foundation for the Sociology of Health & Illness.)
- Published
- 2025
- Full Text
- View/download PDF
42. Privileges, and Permissions: Theorising Intersectionality and Cultures of Control in the Care of People Living With Dementia in Acute Hospital Settings.
- Author
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Mwale S, Northcott A, and Featherstone K
- Subjects
- Humans, Male, Female, Social Class, Aged, United Kingdom, Ethnicity, Healthcare Disparities, Hospitals, Racism, Dementia therapy, Anthropology, Cultural, State Medicine
- Abstract
A longstanding body of public enquiries and research identifies people living with dementia experience systemic inequalities within hospital settings, concluding a focus on improving care cultures is required. Drawing on a 3-year multi-sited hospital ethnography, this paper examines everyday cultures of care in NHS acute hospital wards to interrogate how ethnicity, gender and social class intersects to shape the care of people living with dementia. Drawing on Collins' concept of intersectionality and the relational nature of power, the analysis reveals that while cared for by diverse teams of healthcare professionals, a patients' age, ethnicity, gender and social class, as interconnected categories, influences the tightening of ward rules for some people living with dementia and the granting of significant privileges for others. Focussing on walking within the ward, with a large number of people living with dementia classified as 'wandering', we explore ways in which intersectional identities informed who was granted privileges to leave the bedside and 'wander' the ward, and who experienced further control. The paper concludes that institutional racism and attitudes to gender, social class and ageing permeate the routine organisation and delivery of care within NHS acute hospital wards to significantly impact people living with dementia, and in turn, increases the consideration of care pathways that emphasise their discharge to institutional settings., (© 2025 The Author(s). Sociology of Health & Illness published by John Wiley & Sons Ltd on behalf of Foundation for the Sociology of Health & Illness.)
- Published
- 2025
- Full Text
- View/download PDF
43. Parameter ESTimation With the Gauss-Levenberg-Marquardt Algorithm: An Intuitive Guide.
- Author
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Fienen MN, White JT, and Hayek M
- Subjects
- Models, Theoretical, Groundwater, Algorithms
- Abstract
In this paper, we review the derivation of the Gauss-Levenberg-Marquardt (GLM) algorithm and its extension to ensemble parameter estimation. We explore the use of graphical methods to provide insights into how the algorithm works in practice and discuss the implications of both algorithm tuning parameters and objective function construction in performance. Some insights include understanding the control of both parameter trajectory and step size for GLM as a function of tuning parameters. Furthermore, for the iterative Ensemble Smoother (iES), we discuss the importance of noise on observations and show how iES can cope with non-unique outcomes based on objective function construction. These insights are valuable for modelers using PEST, PEST++, or similar parameter estimation tools., (Published 2024. This article is a U.S. Government work and is in the public domain in the USA.)
- Published
- 2025
- Full Text
- View/download PDF
44. Calibrated Ecosystem Models Cannot Predict the Consequences of Conservation Management Decisions.
- Author
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Lubiana Botelho L, Jeynes-Smith C, Vollert SA, and Bode M
- Subjects
- Calibration, Decision Making, Animals, Ecosystem, Conservation of Natural Resources, Models, Biological
- Abstract
Ecosystem models are often used to predict the consequences of management interventions in applied ecology and conservation. These models are often high-dimensional and nonlinear, yet limited data are available to calibrate or validate them. Consequently, their utility as decision-support tools is unclear. In this paper, we calibrate ecosystem models to time series data from 110 different experimental microcosm ecosystems, each containing three to five interacting species. Then, we assess their ability to predict the consequences of management interventions. Our results show that for each time series dataset, multiple divergent parameter sets offer equivalent, good fits. However, these models have poor predictive accuracy when forecasting future dynamics or when predicting how the ecosystem will respond to management intervention. Closer inspection reveals that the models fail because calibration cannot determine the nature of the interspecific interactions. Our findings question whether ecosystem models can support applied ecological decision-making when calibrated against real-world datasets., (© 2024 John Wiley & Sons Ltd.)
- Published
- 2025
- Full Text
- View/download PDF
45. Where Are the Irish in Research on Ethnic Health Inequalities in Britain? A State-Of-The-Art Literature Review.
- Author
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Willis R
- Subjects
- Humans, Ethnicity, Ireland, Mental Health, Socioeconomic Factors, United Kingdom, Health Status Disparities
- Abstract
Decisions about ethnic groups studied in health research shape recommendations. If a group is not included in research, its ability to call for policy change is limited. Despite health inequalities for the Irish in Britain in the 20th century, recent research on health is likely to combine the White Irish with White British, whereas Irish people of colour are not mentioned at all. This paper aims to understand why the interest in this group has declined. A state-of-the-art literature review of 140 papers on Irish health in Britain from 2001 to 2023 was conducted. Findings show the Irish are still disadvantaged in mortality, mental health and suicide, with important socioeconomic status and gender disparities. The shifting way the Irish are constructed over time is critically examined, paying attention to historical depictions and postcolonial identities. Sociological theories of migration are challenged by the Irish because this migrant group does not conform to theoretical assumptions. The Irish may have dropped from the agenda because of incorrect assumptions about assimilation and the relationship between Ireland and the UK. Given that the health outcomes of the Irish in Britain differ from those of the White British population, they should be recognised in health research as a distinct group., (© 2025 The Author(s). Sociology of Health & Illness published by John Wiley & Sons Ltd on behalf of Foundation for the Sociology of Health & Illness.)
- Published
- 2025
- Full Text
- View/download PDF
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