Project description:We sought to confirm the genetic influence in the development of Ventilation-Associated Lung Injury (VALI) and, in the process, identify potential candidate genes involved in the disease by integrating differential gene expression profiling on rat lungs to a traditional strain survey analysis of the parental rat strains, VALI-sensitive Brown Norway rats versus VALI-resistant Dahl Salt Sensitive rats, comparing control (under room air ventilation) versus under high tidal volume (HTV) ventilation. We used microarrays to detail the global programme of gene expression underlying VALI susceptibility and identified distinct classes of up-regulated and down-regulated genes during this process. Keywords: strain-condition analysis
Project description:We sequenced the HK-2 gene expression profile stimulated by ages by high-throughput RNA analysis. Select Ctrl group and ages group, Differentially expressed genes (DEGs) were analyzed. Under the screening condition of fold change greater than or equal to 2, P < 0.05. We obtained 284 up-regulated genes and 193 down-regulated genes. It can be seen that there are obvious gene differences between Ctrl group and ages group (Fig. 3a). Gene ontology analysis (go) was completed. Through goseq software, the biological process of quantitative distribution of rich differential genes was intuitively reflected (BP), molecular function (MF) and cell composition (CC). In addition, in order to explore the impact of ages on cell pathways, we used the Kyoto Encyclopedia of biology to analyze the significantly rich metabolic pathways. There are 221 differentially expressed genes in Ctrl group and ages group. A total of 276 pathways have been established, of which 46 pathways have p < 0.05, and the first 20 pathways are shown in Figure 2C.
Project description:Promoter methylation analysis of hypothalamc DNA from female rats at different juvenile developmental reproductive stages. Results provide insight into the role of the hypothalamus in controlling the onset of puberty. SD rats were housed (4/cage) in a controlled environment and euthanized at different ages (Early Juvenile: 21 days, Late Juvenile: 28 days, Late Proestus (the day of first ovulation): 31 days. Rats were anesthetized and brains were rapidly removed. The hypothalamus was dissected away from the rest of the brain and flash frozen. Total RNA and DNA was isolated from each sample using AllPrep DNA/RNA Mini Kit-Qiagen (Valencia, CA).
Project description:Sprague Dawley rats rendered hypothyroid with 22 days of MMI treatment with half the receiving T3 injection on day 21. Rats killed 24h later and hypothalamic tissue recovered.
Project description:This study aimed to explore the possible mechanism of lidocaine-induced neurotoxicity. A total of 40 rats were randomly assigned to 4 groups (n = 10 per group): control group; sham group, received only intrathecal catheter insertion; saline group, received an intrathecal injection of saline; and lidocaine group, received an intrathecal injection of 10% lidocaine. Neurobehavioral tests were performed on rats in each group before injection and 1, 2, 3, and 4 days after the intrathecal injection. On the fourth day, after completing neurobehavioral tests, the spinal cords of all rats from L2 to L6 were removed and immediately stored in liquid nitrogen. In the control and lidocaine groups, parts of the spinal cord tissues of three rats were selected for gene microarray analysis.Based on the results of the gene chip analysis,Five rats in each group underwent real-time quantitative polymerase chain reaction (PCR) and five Western blot analysis to verify Differentially expressed genes at the mRNA transcription and protein levels. The aim of gene chip analysis is to screen potential genes involved in lidocaine-induced neurotoxicity.
Project description:This study investigates gene expression changes in the pancreas of rats with acute pancreatitis induced by intraperitoneal injection of L-arginine (2*2.5 g/kg, 48 hours) compared to saline-injected controls. High-throughput RNA-Seq was used to explore the transcriptomic differences.
Project description:We performed single nuclei transcriptomics of ventral tegmental area samples from rats sacrificed one hour after a single saline injection and profiled the cell types and their receptor composition.
Project description:Diabetes is one of the major risk factors for Alzheimer’s disease (AD) development. The role of elevated levels of glucose, methylglyoxal (MGO), and advanced glycation end products (AGEs) in diabetes in the pathogenesis of the AD is not well understood. In this pursuit, we studied the role of methylglyoxal in the pathogenesis of AD in rat models. The elevated plus-maze (EPM) behavioural study indicated that MGO induces anxiety. Treatment of telmisartan (RAGE expression inhibitor) and aminoguanidine (MGO quencher) attenuated MGO induced anxiety. Further, hippocampal proteomics demonstrated that MGO treated rats differentially regulate proteins involved in calcium homeostasis, mitochondrial functioning, and apoptosis which may affect neurotransmission and neuronal plasticity. Hippocampal tau phosphorylation level was increased in MGO treated rats which was reduced in presence in aminoguanidine and telmisartan. Plasma fructosamine level was increased upon MGO treatment. Hippocampal histochemistry showed vascular degeneration and neuronal loss upon MGO treatment. This study provides mechanistic insight into the role of MGO in the diabetes-associated development of AD.