Mouse Ileal Loop Model: A Surgical Model to Study Intestinal Permeability in the Mouse
Published: April 30, 2023
Abstract
Source: Boerner, K., et al. Functional Assessment of Intestinal Permeability and Neutrophil Transepithelial Migration in Mice using a Standardized Intestinal Loop Model. J. Vis. Exp. (2021)
This video demonstrates the generation of an ileal loop model to study intestinal permeability in a mouse model. This method provides a live model to understand the epithelial barrier function and consequent immune response.
Protocol
All procedures involving animal models have been reviewed by the local institutional animal care committee and the JoVE veterinary review board. 1. Generation of the ileal loop Skin preparation: Scrub fur of the abdominal midline with alcohol swabs or gauze sponge soaked with 70% Ethanol. Do not wet a wide area of fur with alcohol to prevent hypothermia. Using scissors, perform a midline laparotomy. Make a vertical incision in the middle of the abdomen (a…
Representative Results
Figure 1: The ileal loop model. (A) Schematic overview of the ileal loop model. Median laparotomy is performed on mice under anesthesia and placed on a temperature-controlled surgery board. (B) Exteriorization of the caecum (*), ileum and mesentery. Two adequate sites for ligation are identified (1,2). (C) Isolate a segment of 4 cm length: the first ligature (1) is placed close to the ileo-caecal…
Disclosures
The authors have nothing to disclose.
Materials
| Equipment and Material | |||
| BD Alcohol Swabs | BD | 326895 | |
| BD PrecisionGlide Needle, 25G X 5/8" | BD | 305122 | |
| BD PrecisionGlide Needle, 30G X 1/2" | BD | 305106 | |
| BD 1ml Tuberculin Syringe Without Needle | BD | 309659 | |
| 15ml Centrifuge Tube | Corning | 14-959-53A | |
| Corning 96-Well Solid Black Polystyrene Microplate | FisherScientific | 07-200-592 | |
| Corning Non-treated Culture Dish, 10cm | MilliporeSigma | CLS430588 | |
| Cotton Tip Applicator (cotton swab), 6", sterile | FisherScientific | 25806 2WC | |
| Dynarex Cotton Filled Gauze Sponges, Non-Sterile, 2" x 2" | Medex | 3249-1 | |
| EZ-7000 anesthesia vaporizer (Classic System, including heating units) | E-Z Systems | EZ-7000 | |
| Moria Fine Scissors | FST | 14370-22 | |
| Puralube Vet Ointment, Sterile Ocular Lubricant | Dechra | 12920060 | |
| Ring Forceps (blunt tissue forceps) | FST | 11103-09 | |
| Roboz Surgical 4-0 Silk Black Braided, 100 YD | FisherScientific | NC9452680 | |
| Semken Forceps (anatomical forceps) | FST | 1108-13 | |
| Sofsilk Nonabsorbable Coated Black Suture Braided Silk Size 3-0, 18", Needle 19mm length 3/8 circle reverse cutting | HenrySchein | SS694 | |
| Student Fine Forceps, Angled | FST | 91110-10 | |
| 10ml Syringe PP/PE without needle | Millipore Sigma | Z248029 | |
| Yellow Feeding Tubes for Rodents 20G x 30 mm | Instech | FTP-20-30 | |
| Solutions and Buffers | |||
| Hanks' Balanced Salt Solution | Corning | 21-023-CV | |
| Phosphate-Buffered Saline without Calcium and Magnesium | Corning | 21-040-CV | |
| Isoflurane | Halocarbon | 12164-002-25 | |
Tags
Cite This Article
Mouse Ileal Loop Model: A Surgical Model to Study Intestinal Permeability in the Mouse. J. Vis. Exp. (Pending Publication), e20812, doi: (2023).