Overview

This article describes a minimally invasive laparoscopic technique for serial sampling of liver and mesenteric lymph nodes in macaques. This method enhances sampling frequency while minimizing surgical complications compared to traditional laparotomy.

Key Study Components

Area of Science

Neuroscience
Microbial translocation
HIV biology

Background

Microbial translocation from the GI tract can impact immunological responses.
Understanding the effects on mesenteric lymph nodes and liver is crucial for HIV research.
Traditional surgical methods may pose higher risks to animal welfare.
This technique aims to improve the frequency of sampling with reduced impact on the subjects.

Purpose of Study

To enhance the assessment of microbial translocation effects.
To improve animal welfare during research procedures.
To provide critical samples for understanding HIV pathology.

Methods Used

Preparation of the macaque for laparoscopic surgery.
Creation of pneumoperitoneum for abdominal access.
Collection of mesenteric lymph node and liver biopsies.
Use of sterile techniques to minimize infection risk.

Main Results

The technique allows for multiple sampling points with minimal animal distress.
Successful collection of lymph node and liver biopsies was achieved.
Improved understanding of the immunological consequences of HIV infection.

Conclusions

This laparoscopic method is effective for studying microbial translocation.
It offers a safer alternative to traditional surgical methods.
The technique can be adapted for other research models involving GI inflammation.

Frequently Asked Questions

What is the main advantage of this laparoscopic technique?

The main advantage is the ability to sample at multiple time points with minimal impact on the animal.

Who performed the procedure?

The procedure was performed by Dr. Jeremy Smedley and Dr. Cassie Moats.

What tissues are sampled using this technique?

The technique allows for the sampling of mesenteric lymph nodes and liver biopsies.

How does this method improve animal welfare?

It reduces the need for more invasive surgical procedures like laparotomy.

Can this technique be applied to other models?

Yes, it can be applied to other models where GI inflammation and microbial translocation are relevant.

Institution - Washington National Primate Research Center, University of Washington

Articles Published in JoVE