Psychedelics have emerged as promising candidate treatments for various psychiatric conditions, and given their clinical potential, there is a need to identify biomarkers that underlie their effects. Here, we investigate the neural mechanisms of lysergic acid diethylamide (LSD) using regression dynamic causal modelling (rDCM), a novel technique that assesses whole-brain effective connectivity (EC) during resting-state functional magnetic resonance imaging (fMRI). We modelled data from two randomised, placebo-controlled, double-blind, cross-over trials, in which 45 participants were administered 100 μg LSD and placebo in two resting-state fMRI sessions.
View Article and Find Full Text PDFMajor depressive disorder is a heterogeneous diagnostic category with multiple available treatments. With the goal of optimizing treatment selection, researchers are developing computational models that attempt to predict treatment response based on various pretreatment measures. In this paper, we review studies that use brain activity data to predict treatment response.
View Article and Find Full Text PDFBackground: This paper reports the significant prevalence of a presumed hereditary cataract in the Bengal cat breed in Poland. The nuclear part of the lens is affected and previous reports from Sweden and France for this type of feline cataract suggest that a recessive mode of inheritance is probably involved.
Results: Presumed congenital or neonatal cataract involving the posterior nuclear part of each lens was initially diagnosed in a 12 month old male Bengal cat.
Background: To report the occurrence of choroidal hypoplasia in the Australian Kelpie breed in Poland, the affected dogs testing positive for the Collie Eye Anomaly NHEJ1 gene mutation.
Case Presentations: Choroidal hypoplasia (CH) was initially diagnosed in a young female Australian Kelpie presented for routine ophthalmological examination prior to breeding. Indirect ophthalmoscopy revealed tigroid fundi bilaterally with areas of abnormally arranged choroidal vasculature temporal to the optic disc.
This study was designed to determine the influence of microvesicles (MVs) derived from multipotent stromal cells isolated from human adipose tissue (hASCs) on retinal functionality in dogs with various types of retinal degeneration. The biological properties of hASC-MVs were first determined using an in vitro model of retinal Muller-like cells (CaMLCs). The in vitro assays included analysis of hASC-MVs influence on cell viability and metabolism.
View Article and Find Full Text PDFUse of clinical-grade human induced pluripotent stem cell (iPSC) lines as a starting material for the generation of cellular therapeutics requires demonstration of comparability of lines derived from different individuals and in different facilities. This requires agreement on the critical quality attributes of such lines and the assays that should be used. Working from established recommendations and guidance from the International Stem Cell Banking Initiative for human embryonic stem cell banking, and concentrating on those issues more relevant to iPSCs, a series of consensus workshops has made initial recommendations on the minimum dataset required to consider an iPSC line of clinical grade, which are outlined in this report.
View Article and Find Full Text PDFResearch involving human embryos and reproductive materials, including certain forms of stem cell and genetic research, is a fast-moving area of science with demonstrated clinical relevance. Canada's current governance framework for this field of research urgently requires review and reconsideration in view of emerging applications. Based on a workshop involving ethics, legal, policy, scientific and clinical experts, we present a series of recommendations with the goal of informing and supporting health policy and decision-making regarding the governance of the field.
View Article and Find Full Text PDFJ Obstet Gynaecol Can
February 2018
In Canada, minimally manipulated autologous cell therapies for homologous use (MMAC-H) are either regulated under the practice of medicine, or as drugs or devices under the Food and Drugs Act, Food and Drug Regulations (F&DR) or Medical Device Regulations (MDR). Cells, Tissues and Organs (CTO) Regulations in Canada are restricted to minimally manipulated allogeneic products for homologous use. This leaves an important gap in the interpretation of existing regulations.
View Article and Find Full Text PDFNew methods to manipulate gene and cell state can be used to engineer cell functionality, simplify quality assessment, and enhance manufacturability. These strategies could help overcome unresolved cell therapy manufacturing challenges and complement frameworks to design quality into these complex cellular systems, ultimately increasing patient access to living therapeutics.
View Article and Find Full Text PDFObjectives: To report the prevalence and clinical characteristics of an open-angle glaucoma in Petit Basset Griffon Vendeen (PBGV) dogs in the United Kingdom (UK).
Animals Studied And Methods: At breed society clinics extending over a 6-year period, 366 dogs of varying ages and both sexes were clinically examined for signs of glaucoma using slit-lamp biomicroscopy, indirect and direct ophthalmoscopy, tonometry, and gonioscopy.
Results: The prevalence of glaucoma was 10.
Unlabelled: The purpose of the study is to describe the unique meaning and significance of the essential elements of mothering a preterm infant receiving Newborn Individualized Developmental Care and Assessment Program (NIDCAP) care in a level III NICU. The overall aim was to promote an increased understanding among healthcare practitioners of the experience of this group of women.
Design And Methods: The authors utilized an existential-phenomenologic method to investigate the experience of 7 mothers of a preterm infant 30weeks gestation or less at birth.
Closed breeding populations in the dog in conjunction with advances in gene mapping and sequencing techniques facilitate mapping of autosomal recessive diseases and identification of novel disease-causing variants, often using unorthodox experimental designs. In our investigation we demonstrate successful mapping of the locus for primary open angle glaucoma in the Petit Basset Griffon Vendéen dog breed with 12 cases and 12 controls, using a novel genotyping by exome sequencing approach. The resulting genome-wide association signal was followed up by genome sequencing of an individual case, leading to the identification of an inversion with a breakpoint disrupting the ADAMTS17 gene.
View Article and Find Full Text PDFPostmortem computed tomography (CT) scanning is a routine examination in the medicolegal death investigation of every deceased person admitted to the Victorian Institute of Forensic Medicine. Pulmonary CT angiography is a standard clinical investigation for suspected pulmonary thromboembolism. To the best of our knowledge, a study of postmortem CT pulmonary angiography has not been previously reported in the English-speaking forensic literature.
View Article and Find Full Text PDFIn a coronial setting a deceased person must be formally identified. It is difficult to identify a deceased person when their physical features are disrupted and identification by visual means cannot occur. In the absence of visual identification, the confirmation of identity of a deceased person relies on the scientific comparison of information obtained post mortem with ante mortem information.
View Article and Find Full Text PDFForensic Sci Med Pathol
September 2013
Forensic radiology has become a common modality in many forensic practices around the world. Here, we report and compare the usage patterns in the cities of Melbourne, Australia, and Berlin, Germany, using 16 multislice scanners in two large forensic facilities with both machines integrated in the mortuary. While in Melbourne all bodies receive a full body computed tomography (CT) scan resulting in nearly 5,000 scans per year, the situation differs in Berlin where approximately 250 state prosecutor sanctioned cases are scanned per year.
View Article and Find Full Text PDFThis double-blind, randomized study evaluated the immunogenicity and safety of three production lots of the fully liquid combination DTwP-Hep-Hib vaccine, Quinvaxem (®) (Crucell, The Netherlands) in 360 healthy infants aged 42-64 d old given at 6, 10 and 14 weeks of age (Core Study). The Core Study was followed by an open-label Booster Phase evaluating immunogenicity and safety of a booster dose of Quinvaxem (®) given with either concomitant or deferred measles vaccine in 227 infants who completed the Core Study. One month after the third dose of Quinvaxem (®) immune responses reflecting seroprotection or seroconversion were observed in more than 90% of infants for all three vaccine lots.
View Article and Find Full Text PDFBackground: Retinal Pigment Epithelial Dystrophy (RPED) with neuroaxonal degeneration in English Cocker Spaniels (ECS) is associated with systemic vitamin E deficiency in the absence of dietary insufficiency.
Objective: To evaluate the ability of ECS with RPED to absorb orally administered vitamin E and establish a basis for vitamin E supplementation in affected dogs.
Animals Studied: 8 RPED-affected ECS and five clinically normal dogs.
Forensic Sci Med Pathol
December 2012
CT scanning is an intrinsic component of the workup of all admissions to the Victorian Institute of Forensic Medicine. Using a new system of preliminary examination a decision is made by the coroner as to whether or not an autopsy should occur following consultation with a forensic pathologist. This study examines 318 consecutive cases for the month of July 2010 where the deceased had a preliminary examination including a CT scan which was primarily interpreted by a forensic pathologist.
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