Project description:Our aim was to study the gene expression changes associated to the development of non hepatic steatohepatitis from simple steatosis in a model of diet induced obesity in hamster (mesocricetus auratus)
Project description:COVID-19 or severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), appeared first in Wuhan, Hubei, China, has emerged as a global health concern claiming millions of lives worldwide. Syrian golden hamster (Mesocricetus auratus) has emerged as a suitable model as when infected by SARS-CoV-2, manifests lung pathology resembling human COVID-19 patients. In this study, we employed a quantitative approach to study the proteomic changes in the SARS-CoV-2-infected lung tissue. The samples were analyzed using Orbitrap Fusion Tribrid mass spectrometer in triplicates and the data acquired was searched against Mesocricetus auratus protein database which resulted in the identification of nearly 2,000 non-redundant proteins. The outcome of this study will facilitate in discovery of potential candidate biomarkers for predicting disease course and warrants their further validation in human patient samples.
Project description:Cholesteryl ester transfer protein (CETP) transfers cholesteryl ester (CE) and triglyceride (TG) between lipoproteins, which alters lipoprotein metabolism. Hamster and human CETPs have very different preferences for CE versus TG as substrate. To assess the impact of altering CETP’s substrate preference on lipoproteins in vivo, human CETP was expressed in hamsters (Mesocricetus auratus). Chow-fed hamsters received adenoviruses expressing no CETP (Ad-Null), hamster CETP (Ad-hamster CETP) or human CETP (Ad-human CETP). High density lipoproteins were isolated from hamster plasma 6 days after adenovirus injection by ultracentrifugation as the 1.063 - 1.21 g/ml density fraction. HDL proteins were precipitated with cold acetone and subjected to LC+MS/MS analysis
Project description:We report the application of bulk RNA sequencing technology for high-throughput profiling of SARS-CoV-2 infection in the lung of Syrian golden hamsters (Mesocricetus auratus).
Project description:Using microarray analyses and subsequent verification by RT-PCR, we studied the changes in gene expression in the inferior colliculus after an ictal event in one models of audiogenic epilepsy, genetic audiogenic seizure hamster (GASH:Sal). GASH:Sal, a hamster strain developed at the University of Salamanca, exhibits genetic audiogenic epilepsy similar to human Grand Mal epilepsy. GASH:Sal shows an autosomal recessive inheritance for susceptibility to audiogenic seizures, which manifest more severely in young animals; the seizure severity progressively declines with age. Genetic animal models of epilepsy are an important tool for further understanding the basic cellular mechanisms underlying epileptogenesis and for developing novel antiepileptic drugs. We conducted a comparative study of gene expression in the inferior colliculus, a nucleus that triggers audiogenic seizures, using two animal models, the Wistar audiogenic rat (WAR) and the genetic audiogenic seizure hamster (GASH:Sal). For this purpose, both models were subjected to auditory stimulation, and 60 minutes after stimulation, the inferior colliculi were collected. As a control, intact Wistar rats and Syrian hamsters were subjected to identical stimulation and tissue preparation protocols to those performed on the experimental animals. A total of 24 animals were used in this study according to the following distribution: 12 control Syrian hamsters (Mesocricetus auratus) and 12 GASH:Sal at 16 weeks of age and a body weight of approximately 60 g. Six animals Syrian and GASH:Sal hamsters, respectively, were exposed to auditory stimulation, and 60 min after the seizures, we harvested the IC for all gene expression analyses (stimulated Syrian hamsters and stimulated GASH:Sal hamsters). As controls, other six animals Syrian and GASH:Sal hamsters, respectively, were not exposed to the same stimulation (Syrian hamsters and GASH:Sal hamsters).