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Sex Stratified Neuronal Cultures to Study Ischemic Cell Death Pathways
Published on: December 9, 2013
Sex, death and the (nerve) cell
Katarzyna Tonska1, Ewa Bartnik
1Institute of Genetics and Biotechnology, Faculty of Biology, University of Warsaw, ul. Pawinskiego 5a, 02-106 Warsaw, Poland. kaska@igib.uw.edu.pl
Frontiers in Bioscience (Elite Edition)
|December 29, 2011
Summary
Sex differences in disease risk, like Leber hereditary optic neuropathy (LHON), are not solely due to hormones. Further research into nerve cell sensitivity differences in males and females is needed to explain these disparities.
Area of Science:
- Neuroscience
- Genetics
- Pathophysiology
Background:
- Sex-based differences exist in disease susceptibility, including neurodegenerative disorders and cancers.
- Nerve cell death pathways and sensitivity to apoptosis-inducing factors can vary between sexes.
- While sex hormones contribute to some differences, genetic factors also play a role, as shown in four core genotype mouse models.
Purpose of the Study:
- To explore the underlying mechanisms of sex bias in diseases where hormonal influence is insufficient for explanation.
- To investigate the potential role of differential nerve cell sensitivity in the pathophysiology of Leber hereditary optic neuropathy (LHON).
Main Methods:
- Review of existing literature on sex differences in disease risk and nerve cell apoptosis.
- Analysis of data from four core genotype mouse models to differentiate hormonal and genetic influences.
- Examination of proposed pathophysiological mechanisms in LHON, focusing on retinal ganglion cell death.
Main Results:
- Not all observed sex-based biological differences are attributable to sex hormones.
- Leber hereditary optic neuropathy (LHON), a mitochondrial disease, exhibits a significant male-to-female ratio (approximately 4:1).
- Apoptotic death of retinal ganglion cells is a proposed mechanism in LHON.
Conclusions:
- Differential sensitivity of nerve cells between sexes may underlie observed gender biases in diseases like LHON.
- Further investigation into these cellular mechanisms is warranted to understand and potentially address sex-specific disease risks.
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