Glucocorticoid-regulated localization of cell surface glycoproteins in rat hepatoma cells is mediated within the Golgi complex.

Glucocorticoid hormones regulate the post-translational maturation and sorting of cell surface and extracellular mouse mammary tumor virus (MMTV) glycoproteins in M1.54 cells, a stably infected rat hepatoma cell line. Exposure to monensin significantly reduced the proteolytic maturation and externalization of viral glycoproteins resulting in a stable cellular accumulation of a single 70,000-Mr glycosylated polyprotein (designated gp70). Cell surface- and intracellular-specific immunoprecipitations of monensin-treated cells revealed that gp70 can be localized to the cell surface only in the presence of 1 microM dexamethasone, while in uninduced cells gp70 is irreversibly sequestered in an intracellular compartment. Analysis of oligosaccharide processing kinetics demonstrated that gp70 acquired resistance to endoglycosidase H with a half-time of 65 min in the presence or absence of hormone. In contrast, gp70 was inefficiently galactosylated after a 60-min lag in uninduced cells while rapidly acquiring this carbohydrate modification in the presence of dexamethasone. Furthermore, in the absence or presence of monensin, MMTV glycoproteins failed to be galactosylated in hormone-induced CR4 cells, a complement-selected sorting variant defective in the glucocorticoid-regulated compartmentalization of viral glycoproteins to the cell surface. Since dexamethasone had no apparent global effects on organelle morphology or production of total cell surface-galactosylated species, we conclude that glucocorticoids induce the localization of cell surface MMTV glycoproteins by regulating a highly selective step within the Golgi apparatus after the acquisition of endoglycosidase H-resistant oligosaccharide side chains but before or at the site of galactose attachment

Test Targets 3.0: A Collaborative effort exploring the use of scientific methods for color imaging and process control

Test Targets 3.0 focuses on the integration and analysis of a number of input devices, color image renderings with the use of a robust CTP system and a full-fledged web offset press … The first section is a collection of test forms … The second section is a compilation of color management practices by the class. – p. v

Investigating locally relevant risk factors for Campylobacter infection in Australia: Protocol for a case-control study and genomic analysis

Introduction The CampySource project aims to identify risk factors for human Campylobacter infection in Australia. We will investigate locally relevant risk factors and those significant in international studies in a case-control study. Case isolates and contemporaneous isolates from food and animal sources will be sequenced to conduct source attribution modelling, and findings will be combined with the case-control study in a source-assigned analysis. Methods and analysis The case-control study will include 1200 participants (600 cases and 600 controls) across three regions in Australia. Cases will be recruited from campylobacteriosis notifications to health departments. Only those with a pure and viable Campylobacter isolate will be eligible for selection to allow for whole genome sequencing of isolates. Controls will be recruited from notified cases of influenza, frequency matched by sex, age group and geographical area of residence. All participants will be interviewed by trained telephone interviewers using a piloted questionnaire. We will collect Campylobacter isolates from retail meats and companion animals (specifically dogs), and all food, animal and human isolates will undergo whole genome sequencing. We will use sequence data to estimate the proportion of human infections that can be attributed to animal and food reservoirs (source attribution modelling), and to identify spatial clusters and temporal trends. Source-assigned analysis of the case-control study data will also be conducted where cases are grouped according to attributed sources. Ethics and dissemination Human and animal ethics have been approved. Genomic data will be published in online archives accompanied by basic metadata. We anticipate several publications to come from this study

Embodied pain—negotiating the boundaries of possible action

Pain is a protective strategy, which emerges from on-going interaction between body and world. However, pain is often thought of as a unitary output—an end product experienced as an intrusion upon an often unsuspecting perceiver.55 We know a lot about how nociception relates to pain, informed by both biological and psychological influences,30,68,96 how pain intrudes into awareness,5,26,29,34 and how it relates to clinical variables, such as suffering and disability.35 However, despite significant advances, the mechanisms of pain intrusion remain elusive.62 In this article, we stress a functional view of pain as more than experience, as defensive action operating in the context of uncertain threat.Although traditional characterisations of perception as a product of sensory information have been critiqued,19,41,52 including in pain,87,94 there is now a well-advanced contemporary view that all perception is embodied and embedded.41,46,65,77,84,86 Here, embodied is defined by action, the premise that cognition extends beyond the brain so that an ever-changing body is at the core of how our experiences are shaped; this may be the unconscious workings of our immune system or the collaborative efforts made to avoid movement. Embedded refers to the situated interaction between the embodied being and the external environment, in both place (current context) and time (evolutionary context).From this view, all experience is inferential,78 dynamic,22,54 and related to action in the world.2,21,24 Thus, to describe the experience of pain, we must understand it within its evolved, learned, and ultimately threat-defined context.33,99 Theories of embodied experience are well advanced elsewhere, most notably in cybernetics,4,23,79 evolutionary biology,39,73,80 and consciousness.81,82 Its provenance can be traced to structural psychology,91 phenomenology,47,52,61 and perception.41,75 However, embodied domains have avoided pain, considering it either too simple32 or paradoxically too difficult.6Our embodied view, in many ways, complements the existing literature,18,27,36,42,93,95 supporting the growing understanding of pain as an experience inferred from uncertain information.3,17,83,98 However, it critically looks to extend this work beyond a passive information processing model that has come to dominate.48 Here, we emphasise the body, not separate from the brain nor the world, but part of the facility that actively shapes our experience of pain. This perspective defines pain in terms of action: an experience that, as part of a protective strategy, attempts to defend one's self in the presence of inferred threat

An Analysis of Principled Advocacy in the Development of the Uniform Mediation Act

In this piece, the author examines the drafting of the Uniform Mediation Act in light of the eleven guiding principles endorsed by the organizations represented by the author. The author examines and analyzes numerous shortcomings in the wording of the Act. This piece will closely examine the difficulty mediators, courts, and consumers may encounter once the Act is put into practice. The piece also serves as a guide for state legislatures considering implementing the Uniform Mediation Act, in that the author identifies problems states may have and offers solutions for the predicted difficulties. Necessarily, however the piece also reveals the strong points of the Act and serves as a useful, insightful look into the proposal, drafting, and consequent implementation of a uniform statute