Life, Death, and a Lokrian Goddess

en La présente étude entreprend de réévaluer la figure de la déesse Perséphone telle qu’elle apparaît dans une partie du corpus des lamelles funéraires en or. Il s’agit de montrer que l’importance régionale de la Perséphone de Locres a contribué à la représentation de la déesses dans les lamelles destinées à être utilisées en Grande Grèce. Des représentations mythiques et cultuelles sur les tablettes en terre cuite (pinakes) dédiées à cette déesse révèlent non seulement une « reine chtonienne », mais aussi une divinité concernée par les sphères du mariage et de la naissance. Ces compétences entrent en résonance avec les notions de transition et de renaissance attestées dans les textes des lamelles d’or. Grâce à son importance régionale, la Perséphone de Locres fonctionnait comme une figure familière, capable d’ancrer dans le terreau existant des croyances locales l’expérience nouvelle et individuelle de l’initiation exprimée sur les lamelles.This article argues for a reevaluation of the goddess Persephone as she appears in a subcorpus of the funerary gold leaves. It is argued that the presence of the regionally powerful Lokrian Persephone shaped the representation of the goddess in the leaves crafted for consumption in Magna Graecia. Representations of myth and cult on the clay tablets (pinakes) dedicated to this goddess reveal not only a ‘Chthonian Queen,’ but also a deity concerned with the spheres of marriage and childbirth. These competencies evoked resonances with the concepts of transition and rebirth expressed in the texts of the gold leaves. Through her regional importance Lokrian Persephone functioned as a familiar figure, capable of anchoring the innovative and individualized initiatory experience expressed in the leaves within the existing fabric of local belief

Genetic control of cellular morphogenesis in Müller glia.

Cell shape is critical for the proper function of every cell in every tissue in the body. This is especially true for the highly morphologically diverse neural and glia cells of the central nervous system. The molecular processes by which these, or indeed any, cells gain their particular cell-specific morphology remain largely unexplored. To identify the genes involved in the morphogenesis of the principal glial cell type in the vertebrate retina, the Müller glia (MG), we used genomic and CRISPR based strategies in zebrafish (Danio rerio). We identified 41 genes involved in various aspects of MG cell morphogenesis and revealed a striking concordance between the sequential steps of anatomical feature addition and the expression of cohorts of functionally related genes that regulate these steps. We noted that the many of the genes preferentially expressed in zebrafish MG showed conservation in glia across species suggesting evolutionarily conserved glial developmental pathways.The work was supported by a Marie Curie Individual Fellowship (MSCA-IF-2015-707668) to MCP, a JG Graves Medical Research Fellowship and Wellcome Trust Seed Award (210152/Z/18/Z) to RBM and an Investigator Award from the Wellcome Trust (SIA 100329/Z/12/Z) to WAH

Matt and Sara

This book was completed for Jan Baker\u27s artists\u27 book class, Printed Books.https://digitalcommons.risd.edu/specialcollections_bookmark_stories/1005/thumbnail.jp

The effect of different types of hepatic injury on the estrogen and androgen receptor activity of liver

Mammalian liver contains receptors for both estrogens and androgens. Hepatic regeneration after partial hepatectomy in male rats is associated with a loss of certain male-specific hepatic characteristics. In this study we investigated the effects of lesser forms of hepatic injury on the levels of estrogen and androgen receptor activity in the liver. Adult male rats were subjected to portacaval shunt, partial portal vein ligation, hepatic artery ligation, or two-thirds partial hepatectomy. Another group of animals was treated with cyclosporine. At the time of sacrifice the livers were removed and used to determine the estrogen and androgen receptor activity in the hepatic cytosol. A significant reduction (p < 0.05) in the hepatic cytosolic androgen receptor activity and a slight increase in the estrogen receptor activity occurred following total portosystemic shunting. Partial ligation of the portal vein, which produces a lesser degree of portosystemic shunting, had no effect on the levels of the estrogen and androgen receptor activity present within hepatic cytosol. Cyclosporine-treated animals had significantly greater (p < 0.01) levels of estrogen receptor activity in the hepatic cytosol compared to vehicle-treated control animals. Levels of estrogen and androgen receptor activity within the hepatic cytosol remained unchanged after ligation of the hepatic artery. The reduction in the cytosolic estrogen and androgen receptor activity in the liver after partial hepatectomy was confirmed. In summary, certain types of hepatic injury are associated with profound changes in the estrogen and androgen receptor content within the liver. © 1989 Informa UK Ltd All rights reserved: reproduction in whole or part not permitted

Shedding light on the elusive role of endothelial cells in cytomegalovirus dissemination.

Cytomegalovirus (CMV) is frequently transmitted by solid organ transplantation and is associated with graft failure. By forming the boundary between circulation and organ parenchyma, endothelial cells (EC) are suited for bidirectional virus spread from and to the transplant. We applied Cre/loxP-mediated green-fluorescence-tagging of EC-derived murine CMV (MCMV) to quantify the role of infected EC in transplantation-associated CMV dissemination in the mouse model. Both EC- and non-EC-derived virus originating from infected Tie2-cre(+) heart and kidney transplants were readily transmitted to MCMV-naïve recipients by primary viremia. In contrast, when a Tie2-cre(+) transplant was infected by primary viremia in an infected recipient, the recombined EC-derived virus poorly spread to recipient tissues. Similarly, in reverse direction, EC-derived virus from infected Tie2-cre(+) recipient tissues poorly spread to the transplant. These data contradict any privileged role of EC in CMV dissemination and challenge an indiscriminate applicability of the primary and secondary viremia concept of virus dissemination

Biocompatibility of subretinal parylene-based Ti/Pt microelectrode array in rabbit for further artificial vision studies

To evaluate the biocompatibility of subretinal implanted parylene-based Ti/Pt microelectrode arrays (MEA). Eyes were enucleated 3 months after MEAs were implanted into the subretinal space of rabbits. Morphological changes of the retinas were investigated by H&E staining. Immunohistochemical staining for glial fibrillary acidic protein and opsin were performed to evaluate changes in Muller cells and photoreceptors in the retinas. Retina tissue around the array remained intact. Photoreceptor degeneration and glial cell activation were observed in the retina overlaying the MEA implant. However, the cells in the inner retinal layers were preserved. Photoreceptor degeneration and glial cell activation at the MEA–retina interface are expected to be a normal reaction to implantation. Material used in this experiment has good biocompatibility within the subretinal environment and is expected to be promising in the further retinal prosthesis studies