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Abstract Living objects are able to consume chemical energy and process information independently from others. However, living objects can coordinate to form ordered groups such as schools of fish. This work considers these complex groups as living materials and presents imaging-based experiments of laboratory schools of fish to understand how activity, which is a non-equilibrium feature, affects the structure and dynamics of a group. We use spatial confinement to control the motion and structure of fish within quasi-2D shoals of fish and use image analysis techniques to make quantitative observations of the structures, their spatial heterogeneity, and their temporal fluctuations. Furthermore, we utilize Monte Carlo simulations to replicate the experimentally observed data which provides insight into the effective interactions between fish and confirms the presence of a confinement-based behavioral preference transition. In addition, unlike in short-range interacting systems, here structural heterogeneity and dynamic activities are positively correlated as a result of complex interplay between spatial arrangement and behavioral dynamics in fish collectives.

Background: FDG PET/CT is a tool for assessing response to therapy in various cancers, and may provide an earlier biomarker of clinical response. We developed a novel semi-automated approach for analyzing FDG PET/CT images in patients with multiple myeloma (MM) to standardize FDG PET application. Methods: Patients (n = 8) with relapsed/refractory MM from the Phase 2 study (NCT02899052) of venetoclax plus carfilzomib and dexamethasone underwent FDG PET/CT at baseline and up to two timepoints during treatment. Images were processed using an established automated segmentation algorithm, with the modification that a red marrow region in an unaffected lumbar vertebra was used to define background standardized uptake value normalized to lean body mass (SUL) threshold above which uptake was considered disease-specific uptake. This approach was compared to lesion segmentation, and to International Myeloma Working Group (IMWG) response criteria, including minimal residual disease (MRD). Results: The two FDG PET analysis techniques agreed on evaluation of patient-level SULpeak for 67% of scans. In the metabolic response assessment per PET Response Criteria in Solid Tumors (PERCIST), the two techniques agreed in 75% of patients. Differences between techniques occurred in low-uptake lesions due to greater reader sensitivity to lesions with uptake marginally above background. PERCIST outcomes were generally in agreement with IMWC and MRD. Conclusions: This semi-automated analysis was in high agreement with standard approaches for detecting response to MM therapy. This proof-of-concept study suggests that larger studies should be conducted to confirm how FDG PET analysis may aid early response detection in MM.

Emotion regulation is thought to involve communication between and within large-scale brain networks that underlie emotion reactivity and cognitive control. Aberrant network interaction might therefore be a key neural feature of mental disorders that involve emotion dysregulation. Here we tested whether connectivity hierarchies within and between emotion reactivity and cognitive reappraisal networks distinguishes social anxiety disorder (SAD) patients (n = 70) from healthy controls (HC) (n = 25). To investigate network organization, we implemented a graph-theory method called Dependency Network Analysis. Participants underwent fMRI while watching or reappraising video clips involving interpersonal verbal criticism. During reappraisal, the reappraisal network exerted less influence on the reactivity network in SAD participants. Specifically, the influence of the right inferior frontal gyrus on both reappraisal and reactivity networks was significantly reduced in SAD compared with HC, and correlated negatively with negative emotion ratings among SAD participants. Surprisingly, the amygdala exhibited reduced influence on the reappraisal network in SAD relative to HC. Yet, during the watch condition, the left amygdala's influence on the reactivity network increased with greater social anxiety symptoms among SAD participants. These findings refine our understanding of network organization that contributes to efficient reappraisal or to disturbances in applying this strategy in SAD.

Azo dyes are valuable functional materials due to their sensitive response to and effective modulation of polarized light. It is essential to find out not only the optical anisotropy but also the complex refractive index of azo dye materials for photonics applications. We report here such measurements of highly ordered photoaligned azo dye films. The film has an apparent dichroic ratio of about 60. We model the photoaligned azo dye film systems using the Berreman transfer matrix. By means of regression fitting of the polarization dependent transmittance and reflectance data, we were able to determine the complex refractive indices of the aligned film at the wavelength range of 400–1000 nm. This material is found to have exceptionally large optical birefringence (Δn ∼ 0.75 at 632.5 nm and Δn ∼ 0.48 at 850.6 nm). The aligned azo dye film is valuable to applications such as coatable polarizers and optical modulation devices.

Lipoprotein-X is an extremely rare cause of severe hyperlipidemia. We present a case of a 26-year-old man with primary sclerosing cholangitis who developed lipoprotein X-induced pseudohyponatremia with severe hyponatremia. In this case report, we also discuss the diagnostic approach and the treatment for lipoprotein X. (Level of Difficulty: Advanced.)

Abstract BackgroundDemand for breast implant removal is on the rise, with more than 36,000 ObjectivesThe authors sought to compare perioperative pain control between three different types of ultrasound (US)-guided regional anesthetic techniques in patients undergoing implant removal with capsulectomy. MethodsThe authors reviewed all patients who received an US-guided block and underwent breast implant removal with capsulectomy at their outpatient surgical center over a 2-year period. They compared intraoperative (IO), PO opioid requirement, and patient-reported pain on the first postoperative day (POD1) between 3 different block techniques using chi-square analysis. A P ResultsA total of 352 patients were included. Twenty-six patients (7.4%) underwent a serratus plane (SP) block, 13 (3.7%) underwent an erector spinae combined with pectointercostal fascial plane (ES + PIFP) block, and 313 (88.9%) underwent an erector spinae combined with pectoral nerve (ES + PECS1) block. ES + PECS1 was associated with less IO and PO opioid use compared with SP and ES + PIFP (1.9% vs 19.2% vs 61.5%, PPP ConclusionsRegional pain blocks, and specifically the ES block, offer effective pain control for patients undergoing breast implant removal with capsulectomy, demonstrating high patient satisfaction in the PO period with low opioid requirements. Level of Evidence: 3

The goal of this work was to design nerve guidance scaffolds with a unique architecture to maximize the open volume available for nerve growth. Polycaprolactone (PCL) was selected as the scaffold material based on its biocompatibility and month-long degradation. Yet, dense PCL does not exhibit suitable properties such as porosity, stiffness, strength, and cell adhesion to function as an effective nerve guidance scaffold. To address these shortcomings, PCL was processed using a modified salt-leaching technique to create uniquely controlled interconnected porosity. By controlling porosity, we demonstrated that the elastic modulus could be controlled between 2.09 and 182.1 MPa. In addition, introducing porosity and/or coating with fibronectin enhanced the PCL cell attachment properties. To produce PCL scaffolds with maximized open volume, porous PCL microtubes were fabricated and translated into scaffolds with 60 volume percent open volume. The scaffolds were tested in transected rat spinal cords. Linear axon growth within both the microtubes as well as the interstitial space between the tubes was observed, demonstrating that the entire open volume of the scaffold was available for nerve growth. Overall, a novel scaffold architecture and fabrication technique are presented. The scaffolds exhibit significantly higher volume than state-of-the-art scaffolds for promising spinal cord nerve repair.

Purpose: The objective of this study was to determine the toxicities and outcomes of patients with spinal metastasis treated with external beam radiation therapy (EBRT) to 25 Gy in 5 fractions. Methods and Materials: Data were extracted from an institutional tumor registry for patients with spinal metastasis who were treated with EBRT to 25 Gy in 5 fractions to their spinal lesion(s). Cox regression and Kaplan-Meier analyses to determine local control and overall survival (OS) were employed. Results: Seventy-five patients with 86 total treated spinal metastatic tumors were identified. The median follow-up was 7 months. The median age was 66 years. Fifty-six patients (75.7%) experienced partial or complete pain relief for a median duration of 6 months (range, 1-33). Fifty-one (59.3%) cases were planned using intensity modulated radiation therapy while 19 (22.1%) employed 3-dimensional conformal radiation therapy and 16 (18.6%) cases used nonconformal radiation technique. Greater than 90% of cases had a point dose maximum to the spinal cord/cauda equina

Background:. Breast implant illness (BII) is a term popularized by social media to describe systemic symptoms that patients ascribe to their breast implants. Though the concept of implants as an underlying cause for a systemic illness remains controversial, few studies have delineated the implant characteristics, capsular histology, and outcomes of patients who undergo explantation for BII. Methods:. We retrospectively reviewed the demographics, presenting symptoms, outcomes, capsular histology, and culture results of all women who presented to the senior author with symptoms attributed to BII and underwent breast implant removal with capsulectomy from August 2016 to February 2020. Chi-square and logistic regression analyses were performed to evaluate association between implant type, composition, and findings of inflammation on capsule pathology. Results:. Among 248 patients, 111 (23%) capsules demonstrated inflammatory changes on permanent pathology. Capsular inflammation was independently associated with silicone versus saline (right odds ratio [OR] = 2.18 [1.16–4.11], P = 0.016, left OR = 2.35 [1.08–5.12], P = 0.03) and textured versus smooth implants (right OR = 2.18 [1.16–4.11], P = 0.016, left OR = 2.25 [1.17–4.31], P = 0.01). Silicone material was present in the capsules of 12 patients (4.8%). Fourteen patients had positive cultures. There was one pneumothorax (0.4%), three hematomas requiring evacuation (1%), and two DVTs (0.8%). Of 228 patients, 206 (90.4%) reported high satisfaction with the outcome of the procedure. Conclusions:. In a large cohort of BII patients, we found that capsular inflammation is significantly associated with silicone and textured implants. Implant removal with capsulectomy can be safely performed in patients with BII with a low complication rate and high patient satisfaction.

Recent advances in optics and computing technologies have encouraged many applications to adopt the use of three-dimensional (3D) data for the measurement and visualization of the world around us. Modern 3D-range scanning systems have become much faster than real-time and are able to capture data with incredible precision. However, increasingly fast acquisition speeds and high fidelity data come with increased storage and transmission costs. In order to enable applications that wish to utilize these technologies, efforts must be made to compress the raw data into more manageable formats. One common approach to compressing 3D-range geometry is to encode its depth information within the three color channels of a traditional 24-bit RGB image. To further reduce file sizes, this paper evaluates two novel approaches to the recovery of floating-point 3D range data from only a single-channel 8-bit image using machine learning techniques. Specifically, the recovery of depth data from a single channel is enabled through the use of both semantic image segmentation and end-to-end depth synthesis. These two distinct approaches show that machine learning techniques can be utilized to enable significant file size reduction while maintaining reconstruction accuracy suitable for many applications. For example, a complex set of depth data encoded using the proposed method, stored in the JPG 20 format, and recovered using semantic segmentation techniques was able to achieve an average RMS reconstruction accuracy of 99.18% while achieving an average compression ratio of 106:1 when compared to the raw floating-point data. When end-to-end synthesis techniques were applied to the same encoded dataset, an average reconstruction accuracy of 99.59% was experimentally demonstrated for the same average compression ratio.

Previous studies have found that sluggish cognitive tempo (SCT) symptoms are often associated with social problems and withdrawn behavior. However, the possible neuropsychological mechanism underlying this relationship remains unclear. Some studies have also found that SCT symptoms are related to deficits in sustained attention and selective attention. However, no study has examined whether attention deficits are related to social problems and withdrawn behavior in children with SCT. This study was the first to examine the neuropsychological correlates of social problems and withdrawn behavior among children with SCT symptoms. The results showed that sustained attention measure (omission) predicted the severity of social problems and withdrawn behavior in children with SCT even after controlling for symptoms of attention-deficit hyperactivity disorder. Selective attention measure (response latency mean) was also found to predict the severity of social problems. These results suggest that the social problems commonly exhibited by children with SCT are related to deficits in sustained attention and attentional control. Thus, our results provide an initial support to the link between attention deficits and social problems among children with SCT.

Introduction:. Survival for women diagnosed with inflammatory breast cancer (IBC) has improved with advances in multimodal therapy. This study was performed to evaluate trends, predictors, and survival for reconstruction in IBC patients in the United States. Methods:. Women who underwent mastectomy with or without reconstruction for IBC between 2004 and 2016 were included from the National Cancer Database. Predictors for undergoing reconstruction and association with overall survival were determined. Results:. Of 12,544 patients with IBC who underwent mastectomy, 1307 underwent reconstruction. Predictors of reconstruction included younger age, private insurance, higher income, performance of contralateral prophylactic mastectomy, and location within a metropolitan area (P < 0.001). The proportion of women having reconstruction for IBC increased from 7.3% to 12.3% from 2004 to 2016. Median unadjusted overall survival was higher in the reconstructive group l [93.7 months, 95% confidence interval (CI) 75.2–117.5] than the nonreconstructive group (68.1 months, 95% CI 65.5–71.7, hazard ratio = 0.79 95% CI 0.72–0.88, P < 0.001). With adjustment for covariates, differences in overall mortality were not significant, with hazard ratio of 0.95 (95% CI 0.85–1.06, P = 0.37). Conclusions:. Reconstruction rates for IBC are increasing. Women with IBC who undergo reconstruction tend to be younger and are not at the increased risk of all-cause mortality compared to those not having reconstruction. The National Cancer Database does not differentiate immediate from delayed reconstruction. However, the outcomes of immediate reconstruction in carefully selected patients with IBC should be further studied to evaluate its safety. This could impact current guidelines, which are based largely on an expert opinion.

Abstract Introduction Cerebrospinal fluid (CSF) molecular exchange with brain interstitial fluid (ISF) and periphery is implicated in neurological disorders but needs better quantitative clinical assessment approaches. Methods Following intrathecal (ITH) dosing via lumbar puncture, Technetium‐99 m (99mTc‐) diethylenetriaminepentaacetic acid (DTPA) imaging was used to quantify neuraxial spread, CSF‐brain molecular exchange, and CSF‐peripheral clearance in 15 normal human volunteers. The effect of experimental convection manipulation on these processes was also assessed. Results Rostral cranial 99mTc‐DTPA exposures were influenced by the volume of artificial CSF in the formulation. Signal translocation to the cranial cisterns and the brain parenchyma was observable by 3 hours. 99mTc‐DTPA penetrated cortical ISF but showed lower signal in deeper structures. Urinary 99mTc‐DTPA signal elimination was accelerated by higher formulation volumes and mechanical convection. Discussion Widely used for detecting CSF leaks, ITH 99mTc‐DTPA imaging can also become a useful clinical biomarker for measuring molecular exchange physiology between the CSF, brain, and periphery.

Purpose: Total knee arthroplasty (TKA) and total hip arthroplasty (THA) patients are at an elevated risk of post-operative venous thromboembolism (VTE). Newer thromboprophylactic agents such as rivaroxaban are increasingly used and effective in preventing thromboembolic events but may worsen bleeding risk. Recent studies have suggested that the more cost-effective aspirin may also be effective in preventing VTE. This systematic review and meta-analysis aimed to compare the efficacy of aspirin against rivaroxaban for the prevention of VTE following TKA and THA. Methods: Electronic searches were performed using five databases from their date of inception to August 2018. Relevant studies were identified, with data extracted and meta-analyzed from the studies. Results: Five studies were included, which consisted of 2257 in the aspirin group and 2337 in the rivaroxaban group. There were no differences between aspirin and rivaroxaban for either VTE ( p = 0.48) or its components deep vein thrombosis ( p = 0.44) and pulmonary embolism ( p = 0.98). Also, there were no differences between groups for either major bleeding ( p = 0.17), any bleeding ( p = 0.62), readmissions ( p = 0.37) or wound complications ( p = 0.17). Conclusion: Aspirin was not significantly different to rivaroxaban for prevention of VTE or adverse events after TKA or THA. However, this study was limited by the significant heterogeneity of the included studies. More large randomized studies are needed to add to this body of evidence.

Background: Subjective age (SA) is an indicator of aging that has been empirically associated with health impediments and hindered longevity. Studies show that adverse life events may result in relatively older SA, but have not addressed the differential contribution of life events across the lifespan and the course of posttraumatic psychopathology on the SA of aging survivors of extreme trauma. Objective: Filling this gap, the current study explored the differential contribution of (1) adverse experiences in various life-stages and (2) trajectories of posttraumatic stress disorder (PTSD) to the prediction of SA in a sample of former prisoners-of-war as they enter old age. Method: A cohort of Israeli former prisoners-of-war of the 1973 Yom Kippur War (N = 103) was assessed at four points throughout four decades after the war. A linear hierarchical regression was utilized to assess the contribution of negative life events during childhood, participation in other wars, combat exposure, suffering in captivity, life events since the war and the trajectories of PTSD for predicting SA 42-years post-repatriation. Results: Lifespan adversity explained 50% of the variance in SA, with trajectories of PTSD making the largest contribution, followed by life events since the war. Negative life events in childhood added to the explained variance only when PTSD trajectories were accounted for. Exposure to combat, participation in additional wars and the severity of specific experiences during captivity did not reach significance, though the latter marginally contributed to the explained variance (p = .069). Conclusions: This study demonstrates the importance of considering the prolongation of posttraumatic psychopathology together with life adversities and their differential implications when addressing SA after extreme trauma. The findings suggest that early life adversity may be a latent factor that increases vulnerability to posttraumatic premature aging processes.

Respiratory syncytial virus (RSV) is a seasonal mucosal pathogen that infects the ciliated respiratory epithelium and results in the most severe morbidity in the first six months of life. RSV is a common cause of acute respiratory infection during infancy and is an important early-life risk factor strongly associated with asthma development. While this association has been repeatedly demonstrated, limited progress has been made on the mechanistic understanding in humans of the contribution of infant RSV infection to airway epithelial dysfunction. An active infection of epithelial cells with RSV in vitro results in heightened central metabolism and overall hypermetabolic state; however, little is known about whether natural infection with RSV in vivo results in lasting metabolic reprogramming of the airway epithelium in infancy. To address this gap, we performed functional metabolomics, 13C glucose metabolic flux analysis, and RNA-seq gene expression analysis of nasal airway epithelial cells (NAECs) sampled from infants between 2–3 years of age, with RSV infection or not during the first year of life. We found that RSV infection in infancy was associated with lasting epithelial metabolic reprogramming, which was characterized by (1) significant increase in glucose uptake and differential utilization of glucose by epithelium; (2) altered preferences for metabolism of several carbon and energy sources; and (3) significant sexual dimorphism in metabolic parameters, with RSV-induced metabolic changes most pronounced in male epithelium. In summary, our study supports the proposed phenomenon of metabolic reprogramming of epithelial cells associated with RSV infection in infancy and opens exciting new venues for pursuing mechanisms of RSV-induced epithelial barrier dysfunction in early life.

Purpose The purpose of this study is to assess temporal trends in population-based treatment and survival rates in patients with early-stage non-small cell lung cancer (NSCLC). Methods Data were extracted from the Surveillance, Epidemiology, and End Results (SEER) database. Chi-square test, Kaplan-Meier method, and Cox regression models were employed in SPSS 23.0. Results Fifty-seven thousand and eighty-eight NSCLC patients with early-stage disease from 1988 to 2014 were identified. 6409 (11.2%) were diagnosed in 1988-1994, 5800 (10.2%) 1995-1999, 13,031 (22.8%) 2000-2004, 15,786 (27.7%) 2005-2009, and 16,062 (28.1%) 2010-2014. We observed a significant increase in the proportion of older patients, adenocarcinoma histology, and rate of wedge resection over the study period. The five-year overall survival (OS) for the entire cohort was 63.3%. Those undergoing resection without adjuvant therapy had the highest outcomes. Lobectomy was associated with better outcomes compared to wedge resection or pneumonectomy. A significant difference in five-year OS by year of diagnosis (1988-1994: 58.8% vs. 1995-1999: 60.6% vs. 2000-2004: 63.2% vs. 2005-2009: 66.1%; p < 0.001) was observed. This significant OS difference was also observed regardless of age, surgery type, and T stage, but also only in those with adenocarcinoma. On multivariable analysis, year of diagnosis, age, gender, race, treatment and surgery type, histology, T stage, and tumor grade remained independent prognostic factors for OS. Conclusions Overall survival for early-stage NSCLC has significantly improved over the recent decades despite an increasing proportion of older patients and those undergoing sublobar resection or SBRT. This finding may be limited to those with adenocarcinoma., Author(s): Jacob Y. Shin [sup.1] , Ja Kyoung Yoon [sup.1] , Gaurav Marwaha [sup.1] Author Affiliations: (Aff1) 0000 0001 0705 3621, grid.240684.c, Department of Radiation Oncology, Rush University Medical Center, [...]