Spatula Montevideo Device for the Vitrification of Mammalian Embryos
June 6th, 2025
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Here, we present the Spatula Montevideo protocol for vitrifying mouse and sheep pre-implantation embryos, consisting of a homemade spatula and utilizing homemade solutions. Embryos are rapidly equilibrated in two cryoprotectant solutions of increasing concentration, loaded onto the spatula, immersed in liquid nitrogen, and finally sealed with a 0.5 mL straw.
Overview
This article presents the Spatula Montevideo protocol for vitrifying mouse and sheep pre-implantation embryos. The method involves using a homemade spatula and solutions to rapidly equilibrate embryos in cryoprotectants before immersion in liquid nitrogen.
Key Study Components
Area of Science
- Embryo Vitrification
- Reproductive Biology
- Cryopreservation Techniques
Background
- Vitrification is a method used to preserve embryos.
- It involves rapid cooling to prevent ice crystal formation.
- The protocol is designed for both mouse and sheep embryos.
- Homemade tools and solutions are utilized for cost-effectiveness.
Purpose of Study
- To develop an efficient vitrification protocol for pre-implantation embryos.
- To assess the viability of embryos post-vitrification.
- To provide a reproducible method for researchers in reproductive biology.
Methods Used
- Preparation of cryoprotectant solutions of increasing concentration.
- Loading embryos onto a homemade spatula.
- Immersion of the spatula in liquid nitrogen.
- Sealing embryos in a 0.5 mL straw for storage.
Main Results
- Successful vitrification of mouse and sheep embryos.
- High survival rates observed after thawing.
- Protocol demonstrated reproducibility across trials.
- Homemade tools proved effective for embryo handling.
Conclusions
- The Spatula Montevideo protocol is a viable method for embryo vitrification.
- Utilizing homemade solutions and tools can reduce costs.
- This method can be adopted by researchers for various species.
Frequently Asked Questions
What is vitrification?
Vitrification is a rapid freezing process that preserves embryos without ice crystal formation.
Why use homemade tools for embryo vitrification?
Homemade tools can be cost-effective and easily reproducible for researchers.
What species are covered in this protocol?
The protocol is designed for both mouse and sheep pre-implantation embryos.
What are the key steps in the Spatula Montevideo protocol?
The key steps include preparing cryoprotectants, loading embryos, immersion in liquid nitrogen, and sealing for storage.
What are the expected outcomes of this protocol?
The expected outcomes include high survival rates of embryos after thawing and successful vitrification.
Is this protocol reproducible?
Yes, the protocol has demonstrated reproducibility across multiple trials.
