905 research outputs found

    The Emperor’s New Clothes: How the Judicial System and the Housing-Mortgage Market Have Turned a Blind Eye to the Destruction of the Negotiability of Mortgage Promissory Notes

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    This Article examines the common notions of negotiable instruments as they relate to the modern day promissory note in the context of residential mortgage lending. The Article further addresses the destruction of the negotiability of such promissory notes through various undertakings added for the benefit of the banking industry, often to the detriment of a borrower. The use of negotiable instruments commenced in the 1800s in England as a way of ensuring a fluid market between trades as there was no fiat currency system in place. The fundamental purpose behind the concept of negotiability was subsequently abrogated by the modernization of the financial industry, and the creation of a global marketplace for the purchase and sale of promissory notes. Furthermore, the Article discusses how the holder in due course doctrine, which limits a borrower’s defenses when a promissory note has been transferred from one note holder to another, has created significant abuse to consumers by the financial industry. The abuse of consumers through the holder in due course doctrine remains a problem unchecked by many courts that continue to apply negotiability law to modern day promissory notes in real estate mortgage transactions despite the fact that modern day promissory notes lack any of the tenets of “negotiability” under article 3 of the Uniform Commercial Code. The Article then calls on the judiciary, as theoretically the least political and most impartial branch of government, to find that such promissory notes are no longer negotiable instruments, and therefore must be transferred via assignment pursuant to article 9 of the Uniform Commercial Code. Such a new construct or approach would provide the transparency necessary to protect consumers and preserve defenses to predatory lending by the financial industry

    Generalization and discrimination of inhibitory avoidance differentially engage anterior and posterior retrosplenial subregions

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    IntroductionIn a variety of behavioral procedures animals will show selective fear responding in shock-associated contexts, but not in other contexts. However, several factors can lead to generalized fear behavior, where responding is no longer constrained to the conditioning context and will transfer to novel contexts.MethodsHere, we assessed memory generalization using an inhibitory avoidance paradigm to determine if generalized avoidance behavior engages the retrosplenial cortex (RSC). Male and female Long Evans rats received inhibitory avoidance training prior to testing in the same context or a shifted context in two distinct rooms; one room that had fluorescent lighting (Light) and one that had red LED lighting (Dark).ResultsWe found that animals tested in a light context maintained context-specificity; animals tested in the same context as training showed longer latencies to cross and animals tested in the shifted context showed shorter latencies to cross. However, animals tested in the dark generalized their avoidance behavior; animals tested in the same context and animals tested in the shifted context showed similarly-high latencies to cross. We next examined expression of the immediate early gene zif268 and perineuronal nets (PNNs) following testing and found that while activity in the basolateral amygdala corresponded with overall levels of avoidance behaviors, anterior RSC (aRSC) activity corresponded with learned avoidance generally, but posterior RSC (pRSC) activity seemed to correspond with generalized memory. PNN reduction in the RSC was associated with memory formation and retrieval, suggesting a role for PNNs in synaptic plasticity. Further, PNNs did not reduce in the RSC in animals who showed a generalized avoidance behavior, in line with their hypothesized role in memory consolidation.DiscussionThese findings suggest that there is differential engagement of retrosplenial subregions along the rostrocaudal axis to generalization and discrimination

    Tracking system analytic calibration activities for the Mariner Mars 1969 mission

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    Calibration activity of Deep Space Network in support of Mars encounter phase of Mariner Mars 1969 missio

    Elevated fear states facilitate ventral hippocampal engagement of basolateral amygdala neuronal activity

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    Fear memory formation and retention rely on the activation of distributed neural circuits. The basolateral amygdala (BLA) and ventral hippocampus (VH) in particular are two regions that support contextual fear memory processes and share reciprocal connections. The VH → BLA pathway is critical for increases in fear after initial learning, in both fear renewal following extinction learning and during fear generalization. This raises the possibility that functional changes in VH projections to the BLA support increases in learned fear. In line with this, fear can also be increased with alterations to the original content of the memory via reconsolidation, as in fear elevation procedures. However, very little is known about the functional changes in the VH → BLA pathway supporting reconsolidation-related increases in fear. In this study, we used in vivo extracellular electrophysiology to examine the functional neuronal changes within the BLA and in the VH → BLA pathway as a result of fear elevation and standard fear retrieval procedures. Elevated fear expression was accompanied by higher BLA spontaneous firing compared to a standard fear retrieval condition. Across a range of stimulation frequencies, we also found that VH stimulation evoked higher BLA firing following fear elevation compared to standard retrieval. These results suggest that fear elevation is associated with an increased capacity of the VH to drive neuronal activity in the BLA, highlighting a potential circuit involved in strengthening existing fear memories

    Sorting of chromosomes by magnetic separation

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    Chromosomes were isolated from Chinese hamster x human hybrid cell lines containing four and nine human chromosomes. Human genomic DNA was biotinylated by nick translation and used to label the human chromosomes by in situ hybridization in suspension. Streptavidin was covalently coupled to the surface of magnetic beads and these were incubated with the hybridized chromosomes. The human chromosomes were bound to the magnetic beads through the strong biotin-streptavidin complex and then rapidly separated from nonlabeled Chinese hamster chromosomes by a simple permanent magnet. The hybridization was visualized by additional binding of avidin-FITC (fluorescein) to the unoccupied biotinylated human DNA bound to the human chromosomes. After magnetic separation, up to 98% of the individual chromosomes attached to magnetic beads were classified as human chromosomes by fluorescence microscopy

    Proteomic analysis identifies key differences in the cardiac interactomes of dystrophin and micro-dystrophin

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    ΔR4-R23/ΔCT micro-dystrophin (μDys) is a miniaturized version of dystrophin currently evaluated in a Duchenne muscular dystrophy (DMD) gene therapy trial to treat skeletal and cardiac muscle disease. In pre-clinical studies, μDys efficiently rescues cardiac histopathology, but only partially normalizes cardiac function. To gain insights into factors that may impact the cardiac therapeutic efficacy of μDys, we compared by mass spectrometry the composition of purified dystrophin and μDys protein complexes in the mouse heart. We report that compared to dystrophin, μDys has altered associations with α1- and β2-syntrophins, as well as cavins, a group of caveolae-associated signaling proteins. In particular, we found that membrane localization of cavins −1 and − 4 in cardiomyocytes requires dystrophin and is profoundly disrupted in the heart of mdx^{5cv} mice,a model of DMD. Following cardiac stress/damage, membrane-associated cavin-4 recruits the signaling molecule ERK to caveolae, which activates key cardio-protective responses. Evaluation of ERK signaling revealed a profound inhibition, below physiological baseline, in the mdx^{5cv} mouse heart. Expression of μDys in mdx^{5cv} mice prevented the development of cardiac histopathology but did not rescue membrane localization of cavins nor did it normalize ERK signaling. Our study provides the first comparative analysis of purified protein complexes assembled in vivo by full-length dystrophin and a therapeutic micro-dystrophin construct. This has revealed disruptions in cavins and ERK signaling that may contribute to DMD cardiomyopathy. This new knowledge is important for ongoing efforts to prevent and treat heart disease in DMD patients
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