Project description:Gene Expression Profiling of Severed Rat Medial Collateral Ligament at 1, 2, 4, 7,1 0, and 14 days Following Injury with Control and Cultured Ligament Fibroblasts and Rat Universal Reference RNA; The aim of this study was to assess the genes involved in the repair of the the dense connective tissue of the a rat ligament in order to provide targets for improvement in healing. Rat whole genome microarrays (Agilent) were used in this study and Cy3 and Cy5 labeled total RNA was extracted and labeled with Cy3 or Cy5 prior to fragmentation and hybridization. Experiment Overall Design: To conserve microarrays to allow maximum replicates, two samples either Cy3 or Cy5 labeled were hybridized to each microarry. Total RNA from each rat medial collateral ligament was labeled and hybrided to a microarray. The fluorescence intensity for each column minus the background was extracted from each microarray for submission to BRB Array tools for statistical analysis.

2008-04-05 | E-GEOD-10720 | biostudies-arrayexpress

Gene profiling of the early healing rat medial collateral ligament

2013-06-06 | GSE47676 | GEO

Gene profiling of the early healing rat medial collateral ligament

Project description:The objective of the study was to better understand the mechanism behind scar formation by identifying ECM factors and other unique genes differentially expressed during rat ligament healing via microarray. Rat medial collateral ligaments (MCL) were surgically transected or left intact. MCLs were collected at day 3 or 7 post-injury and used for microarray analysis. Results were compared to the normal intact ligaments. A total of 27 rats were used in the study. Animals were randomly placed in 1 of 3 groups (day 3, day 7, intact CX) with nine animals included with each time (9 rats/group). At the time of collection, MCLs from each time were placed into 3 pools (3 MCLs/pool), resulting in 3 reps per time, and usd for microarray analysis. A total of 9 gene chips were used for the experiment (3 chips/day).

2013-06-06 | E-GEOD-47676 | biostudies-arrayexpress

Transcription profiling of rat to study the effect of hindlimb unloading on healing of medial collateral ligaments 3 weeks after injury

Project description:A recent physiological study established that hindlimb unloading of rats at 3 and 7 weeks inhibits healing of injured ligaments, resulting in a badly aligned, discontinuous collagen matrix. Using tissue from these rats, we focused on the 3-week time point employing microarray analysis to identify what cellular processes or lack of processes could account for these observed deficiencies. We used the Affymetrix RG_U34A GeneChip and performed image analysis with Microarray Suite 5.0. For normalization we used the MAS global normalization protocol with a default target mean signal of 500. Gene expression in medial collateral ligament tissue under 4 different treatment conditions was measured: loaded control, loaded wound healing, unloaded control, and unloaded wound healing. From our results, it appears that unloaded tissue lags behind loaded tissue in its progression through the healing process and at 3 weeks is still engaged in the proliferative phase, whereas loaded tissue is actively remodeling its collagen matrix.

2007-10-26 | E-GEOD-1105 | biostudies-arrayexpress

Rattus norvegicus

Project description:Rat medial prefrontal cortex gene expression following heroin self-administration, abstinence, and extinction

| PRJNA109633 | ENA

Rattus norvegicus

Project description:Effect of Age on Fracture Healing in the Rat

| PRJNA85383 | ENA

Rattus norvegicus

Project description:Very deep small RNA sequencing of whole rat medial entorhinal cortex

| PRJNA339393 | ENA

Rattus norvegicus

Project description:miRNA expression in rat medial entorhinal cortex layers during postnatal development