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Telecommunication assisted forensic assessments of capacity and mistreatment by geriatricians with expertise in elder abuse and self-neglect are helping to meet the demand for such forensic services for Adult Protective Services (APS) clients in remote and underserved areas of Texas. The use of synchronous audiovisual assisted interviews instead of in-person interviews with clients to provide capacity assessments has become more important with the arrival of the COVID-19 pandemic. There is growing interest in establishing similar programs in other states using geriatrician faculty from medical schools to serve the clients of their state Adult Protective Services agencies. The arrangement between APS and the geriatricians at McGovern Medical School in Houston, Texas is novel. The structure of the arrangement is important for the success of the program. Legal, ethical, and practical considerations are discussed in this article, including approaches to the Health Insurance Portability and Accountability Act, physician liability, state law, and resource limitations. It is hoped that sharing how one such collaboration has addressed these important issues will suggest approaches for the structuring of similar programs.
We examine the prevalence and sociodemographic risk factors of skeletal indicators of stress in forensic samples of undocumented migrants from Mexico and Central America.
Cranial and dental remains of 319 migrants recovered in the Arizona and Texas borderlands were assessed for porotic hyperostosis (PH), cribra orbitalia (CO), and linear enamel hypoplasias (LEH). Logistic regression models for each condition were estimated to test for associations with biological sex, age, recovery location, and whether individuals were identified. Additional models estimated for a subsample of identified migrants included region of origin, residential context, and community indigeneity.
The full sample shows moderate crude prevalence of CO (9.6%) and LEH (34.1%), and a high prevalence of PH (49.6%). Significantly higher odds of PH are associated with being male (2.16 times higher), unidentified (1.89 times higher), and recovered in Arizona (3.76 times higher). Among identified migrants, we fail to find associations siged as embodied risk of physiological disturbance when resource access is structured by higher-level social, economic, and political forces. Forensic anthropologists would benefit from increased sensitivity to embodied structural violence among the vulnerable individuals and communities they serve.Cardiac hypertrophy, in its aspects of localized thickening of the interventricular septum and concentric increase of the left ventricle, constitutes a risk factor of heart failure. Myocardial hypertrophy, in the presence of different degree of myocardial fibrosis, is paralleled by significant molecular, cellular, and histological changes inducing alteration of cardiac extracellular matrix composition as well as sarcomeres and cytoskeleton remodeling. Previous studies indicate osteopontin (OPN) and more recently survivin (SURV) overexpression as the hallmarks of heart failure although SURV function in the heart is not completely clarified. In this study, we investigated the involvement of SURV in intracellular signaling of hypertrophic cardiomyocytes and the impact of its transcriptional silencing, laying the foundation for novel target gene therapy in cardiac hypertrophy. Oligonucleotide-based molecules, like theranostic optical nanosensors (molecular beacons) and siRNAs, targeting SURV and OPN mRNAs, were dened SURV overexpression. SURV down-regulation determines the tuning down of MMP9, TIMP1 and TIMP4 extracellular matrix remodeling factors while induces the overexpression of the cardioprotective MCAD factor, which counterbalance the absence of pro-survival and anti-apoptotic SURV activity to protect cardiomyocytes from death. In transverse aortic constriction (TAC) mouse model, the SURV silencing restores the LV mass levels to values not different from the sham group and counteracts the progressive decline of EF, maintaining its values always higher with respect to TAC group. These data demonstrate the central role of SURV in the cardiac reverse remodeling and its therapeutic potential to reverse cardiac hypertrophy.Functional autoantibodies directed to the M2 muscarinic acetylcholine receptor (M2R) could affect the heart rate directly by altering cardiac M2R activity and/or indirectly by changing vagal-mediated cardiac M2R activity. We measured M2R autoantibody activity in sera from 10 subjects with postural tachycardia syndrome (POTS) and 5 healthy control subjects using a cell-based bioassay. Half of the POTS subjects demonstrated presence of elevated M2R autoantibody activity, while no significant M2R autoantibody activity was found in the healthy subjects. Serum-derived immunoglobulin G (IgG) from antibody-positive POTS patients induced a dose-dependent activation of M2R, which was blocked by the muscarinic antagonist atropine. Moreover, antibody-positive POTS IgG decreased the responsiveness to oxotremorine, an orthosteric muscarinic agonist, indicating an indirect inhibitory effect. These data suggest that M2R autoantibodies may contribute to the pathophysiology of POTS by increasing the normal vagal withdrawal during upright posture through its negative allosteric modulation of M2R activity. M2 muscarinic receptor-activating autoantibodies are present in a subgroup of patients with POTS and act as a negative allosteric modulator of the orthosteric ligand response.An informal needs assessment and lack of a national standardized curriculum suggest that there is tremendous variability in the formal teaching of radiation oncology resident throughout the USA. The goal of this study was to characterize formal radiation oncology resident education, in order to identify knowledge gaps and areas for improvement. We developed a 14-item survey consisting of the following domains program characteristics, teaching faculty, formal teaching time, instructional approaches for formal teaching, curricular topics, and satisfaction with didactics. All 91 accredited US-based radiation oncology program directors received an invitation to complete the survey anonymously by email. Saracatinib research buy Twenty-four (26% response rate) program directors responded. Programs used a variety of instructional methods; all programs reported using lecture-based teaching and only a minority using simulation (38%) or flipped classroom techniques (17%). Other than PowerPoint, the most common electronic resource utilized was quizzing/polling (67%), webinar (33%), and econtour.org (13%). The lack of a national, standardized, radiation oncology residency didactic curriculum promotes variability and insufficiency in resident training. Themes for improvement were diversity in didactic topics, incorporation of evidence-based teaching practices, increased faculty involvement, and sharing of resources across programs. Development of a national curriculum and increased electronic resource sharing may help address some of these areas of improvement.Thanks to the developments in implantable biomaterial technologies, invasive operating procedures, and widespread applications especially in vascular disease treatment, a milestone for interventional surgery was achieved with the introduction of vascular stents. Despite vascular stents providing a solution for embolisms, this technology includes various challenges, such as mechanical, electro-chemical complications, or in-stent restenosis (ISR) risks with long-term usage. Therefore, further development of biomaterial technologies is vital to overcome such risks and problems. For this purpose, recent research has focused mainly on the applications of surface modification techniques on biomaterials and vascular stents to increase their hemocompatibility. ISR risk has been reduced with the development and prevalent usage of the art technology stent designs of drug-eluting and biodegradable stents. Nevertheless, their problems have not been overcome completely. Furthermore, patients using drug-eluting stents are faced with further clinical challenges. Therefore, the bare metal stent, which is the first form of the vascular stent technology and includes the highest ISR risk, is still in common usage for vascular treatment applications. For this reason, further research is necessary to solve the remaining vital problems. In this scoping review, stent-based major cardiac events including ISR are analyzed depending on different designs and material selection in stent manufacturing. Recent and novel approaches to overcome such challenges are stated in detail.
The pre-clinical testing of cardiovascular implants gains increasing attention due to the complexity of novel implants and new medical device regulations. It often relies on large animal experiments that are afflicted with ethical and methodical challenges. Thus, a method for simulating physiological heart motions is desired but lacking so far.
We developed a robotic platform that allows simulating the trajectory of any point of the heart (one at a time) in six degrees of freedom. It uses heart motion trajectories acquired from cardiac magnetic resonance imaging or accelero-meter data. The rotations of the six motors are calculated based on the input trajectory. A closed-loop controller drives the platform and a graphical user interface monitors the functioning and accuracy of the robot using encoder data.
The robotic platform can mimic physiological heart motions from large animals and humans. It offers a spherical work envelope with a radius of 29mm, maximum acceleration of 20m/s
and maximum deflection of ±19° along all axes. The absolute mean positioning error in x-, y- and z-direction is 0.21±0.06, 0.31±0.11 and 0.17±0.12mm, respectively. The absolute mean orientation error around x-, y- and z-axis (roll, pitch and yaw) is 0.24±0.18°, 0.23±0.13° and 0.18±0.18°, respectively.
The novel robotic approach allows reproducing heart motions with high accuracy and repeatability. This may benefit the device development process and allows re-using previously acquired heart motion data repeatedly, thus avoiding animal trials.
The novel robotic approach allows reproducing heart motions with high accuracy and repeatability. This may benefit the device development process and allows re-using previously acquired heart motion data repeatedly, thus avoiding animal trials.Mutations in the leucine-rich repeat kinase 2 (LRRK2) gene are the most frequent cause of autosomal dominant Parkinson's disease (PD), producing psychiatric and motor symptoms. We conducted this study to explore whether microglial dopaminergic (DAergic) fiber refinement and synaptic pruning are involved in the abnormal behavioral phenotypes of carriers of the LRRK2 G2019S mutation, by employing young and middle-aged PD model mice. The results revealed a characteristic late-onset hyperactivity and a progressive decline in the motor coordination of the LRRK2 G2019S mutation mice. LRRK2 G2019S mutation-induced aberrant microglial morphogenesis, with more branches and junctions per cell, resulted in excessive microglial refinement of dopaminergic (DAergic) fibers. Moreover, aberrant synaptic pruning distinctly impacted the prefrontal cortex (PFC) and dorsal striatum (DS), with significantly higher spine density in the PFC but the opposite effects in the DS region. Furthermore, LRRK2 G2019S mutation remodeled the inflammatory transcription landscape of microglia, rendering certain cerebral areas highly susceptible to microglial immune response.
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