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Mouse Oocyte Microinjection, Maturation and Ploidy Assessment
Published on: July 23, 2011
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Fluoride impairs oocyte maturation and subsequent embryonic development in mice
Shuang Liang1,2, Ming-Hui Zhao1,2, Sun A Ock3
1Department of Animal Science, Chungbuk National University, Cheongju, Chungbuk, 361-763, Republic of Korea.
Environmental Toxicology
|May 27, 2015
Summary
Fluoride exposure damages female reproductive cells, impacting oocyte quality and fertilization. This study reveals how sodium fluoride disrupts cellular processes, affecting embryonic development and potentially causing infertility.
Area of Science:
- Reproductive Toxicology
- Developmental Biology
- Environmental Health
Background:
- Fluorosis, caused by fluoride, is a global public health concern.
- Sodium fluoride (NaF) is known to adversely affect reproductive function.
- The impact of fluoride on female germ cell development requires further investigation.
Purpose of the Study:
- To evaluate the effects of sodium fluoride (NaF) on the in vivo maturation and developmental potential of mouse oocytes.
- To investigate the underlying mechanisms of fluoride-induced oocyte damage.
Main Methods:
- Female ICR mice were exposed to varying doses of NaF (0, 30, 60, 150 mg/L).
- Oocytes were collected after superovulation and assessed for quality, fertilization potential, and early embryonic development.
- Mechanisms including cytoskeletal dynamics, ATP production, and mitochondrial membrane potential were examined.
Main Results:
- NaF treatment led to abnormal spindle configuration, actin cap formation, and cortical granule-free domains in oocytes.
- Reduced ATP production and mitochondrial membrane potential were observed with NaF overexposure.
- Fertilization rates and subsequent embryonic development were negatively impacted by NaF exposure.
Conclusions:
- In vivo fluoride overexposure significantly disrupts oocyte cytoskeletal dynamics and reduces oocyte quality.
- NaF exposure impairs the developmental potential of oocytes, affecting fertilization and embryonic development.
- Findings suggest a link between environmental fluoride contaminants and reproductive issues like infertility and miscarriage.
