Abstract
The aim of this study was to conduct a comparative analysis of the ultrastructure of neurons of the medulla oblongata (MO) in fish during wintering and to identify the role of components of the synthesis and degradation systems in adapting to unfavorable conditions (hypoxia, hypothermia, starvation). Mautner neurons (MNs) localized in the MO have a wide set of metabolic and functional capabilities. They were shown to be able to accumulate glycogen, having their own system of glycogenesis, glycogenolysis, and deposition of glycogen, which is an alternative source of energy during wintering. The study of MO neurons located near the somatic part of the MN showed that some of these cells, like the MNs, are able to induce a similar additional energy source—glycogen—as indicated by the appearance of glycogen fields in their cytoplasm during wintering. In such cells, as in MNs, during this period, the components of the ultrastructure remain in an active state. The rough endoplasmic reticulum and polyribosomes retain an intact structure in them. At the same time, the Golgi apparatus is reorganized significantly and the catabolic system is activated. In other cells adjacent to MNs, in which there is no accumulation of glycogen, structural degradation is observed. Thus, the features of the ultrastructure of the studied MO neurons indicate the important role of glycogen in their functioning during the wintering period. It can be suggested that, in the medulla oblongata, MNs and some other neurons retain their activity, forming specific centers that are involved in the adaptation of fish to adverse wintering conditions.
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REFERENCES
Altan-Bonnet, N. and Lippincott, J., The golgi apparatus: structure, function and cellular dynamics, in Biogenesis of Cellular Organelles, New York: Academic/Plenum, 2005, pp. 96–110. https://doi.org/10.1007/b138220
Barthet, V.J.A. and Ryan, K.M., Autophagy in neurodegeneration: can’t digest it spit it out, Trends Cell Biol., 2018, vol. 28, pp. 171–173. https://doi.org/10.1016/j.tcb.2018.01.001
Bocharova, L.S., Gordon, R.Ya., Rogaschevsky, V.V., Ignatyev, D.A., and Khutzian, S.S., Cyclic structural changes in endoplasmic reticulum and Golgi complex in the hippocampal neurons of ground squirrels during hibernation, Cell Tissue Biol., 2011, vol. 5, pp. 243–254. https://doi., 2011, vol. 101134/S1990519X11030023
Caspenter, K.L.H., Jalloh, I., and Hutchinson, P.J., Glycolysis and the significance of lactate in traumatic brain injury, Front. Neurosci., 2015, vol. 9, pp. 1–16. https://dx.doi.org/10.3389%2Ffnins.2015.00112
Cataldo, A.M. and Broadwell, R.D., Cytochemical staining of the endoplasmic reticulum and glycogen in mouse anterior pituitary cells, J. Histochem. Cytochem., 1984, vol. 32, pp. 1285–1291.
Cataldo, A.M. and Broadwell, R.D., Cytochemical identification of cerebral glycogen and glucose-6-phosphatase activity under normal and experimental conditions: I. Neurons and glia, J. Electron Microsc. Tech., 1986, vol. 3, pp. 413–437.
Eaton, R.C., Farley, R.D., Kimmel, C.B., and Schabtach, E., Functional development in the Mauthner cell system of embryos and larvae of the zebra fish, J. Neurobiol., 1977, vol. 8, pp. 151–172. https://doi.org/10.1002/neu.480080207
Falkowska, A., Gutowska, I., Goschorska, M., Nowacki, P., Chlubek, D., and Baranowska-Bosiacka, I., Energy metabolism of the brain, including the cooperation between astrocytes and neurons, especially in the context of glycogen metabolism, Int. J. Mol. Sci., 2015, vol. 16, pp. 25959–25981. https://doi.org/10.3390/ijms1611259397
Fernandez-Fernandez, M.R., Ruiz-Garcia, D., Martin-Solana, E., Chichon, F.Ja., Carrascosa, J.L., and Fernandez, J.-J., 3D electron tomography of brain tissue unveils distinct golgi structures that sequester cytoplasmic contents in neurons, J. Cell Sci., 2017, vol. 130, pp. 83–89. https://doi.org/10.1242/jcs.188060
Gordon, R.Ya., Bocharova, L.S., Kruman, I.I., Popov, V.I., Kazantsev, A.P., Khutzian, S.S., and Karnaukhov, V.N., Acridine orange as an indicator of the cytometric ribosome state, Cytometry, 1997, vol. 29, pp. 215–221.
Ivanov, K.P., Osnovy energetiki organizma, teoreticheskie i prakticheskie aspekty (Fundamentals of the Energy of the Organism: Theoretical and Practical Aspects), vol. 4: Energoresursy organizma i fiziologiya vyzhivaniya (Energy Resources of the Body and Survival Physiology). St. Petersburg: Nauka, 2004.
Jin, Y., Lin, Y., Feng, J.F., Feng, J., Gao, G.Y., and Jiang, J.Y., Moderate hypothermia significantly decreases hippocampal cell death involving autophagy pathway after moderate traumatic brain injury, J. Neurotrauma, 2015, vol. 32, pp. 1090–1100. https://doi.org/10.1089/neu.2014.3649
Karanova, M., Influence of low temperature on the evolution of amino acids pools adaptive modifications in poikilothermic animals (review), Int. J. Biochem. Biophys., 2013, vol. 1, pp. 33–40. https://doi.org/10.13189/ijbb.2013.010202
Kimmel, C.B., Sessions, S.K, and Kimmel, R.J., Morphogenesis and synaptogenesis of the zebrafish Mauthner neuron, J. Comp. Neurol., 1981, vol. 198, pp. 101–120.
Lim, Y., Cho, H., and Kim, E.-K., Brain metabolism as a model of autophagy in neurodegeneration, Brain Res., 2016, vol. 1649, pp. 158–165. https://doi.org/10.1016/j.brainres.2016.02.049
Maday, S., Mechanisms of neuronal homeostasis autophagy in the axon, Brain Res., 2017, vol. 1649, pp. 143–150. https://doi.org/10.1016/j.brainres.2016.03.047
Moshkov, D.A., Adaptatsiya i ul’trastruktura neirona (Adaptation and Neuron Ultrastructure), Moscow: Nauka, 1985.
Nixon, R.A., Wegiel, J., Kumar, A., Yu, W.H., Peterhoff, C., and Cataldo, A., Extensive involvement of autophagy in Alzheimer disease: an immunoelectron microscopy study, J. Neurophatol. Exp. Neurol., 2005, vol. 64, pp. 113–122.
Persico, A., Cervigni, R.I., Borretta, M.L., and Colanzi, A., Mitotic inheritance of the Golgi complex, FEBS Lett., 2009, vol. 583, pp. 3857–3862. https://doi.org/10.1016/j.febslet.2009.10.077
Saez, I., Duran, J., Sinadinos, C., Beltran, A., Yanes, O., Tevy, M.F., Martınez-Pons, C., Milan, M., and Guinovar, J.J., Neurons have an active glycogen metabolism that contributes to tolerance to hypoxia, J. Cereb. Blood Flow Metab., 2014, vol. 34, pp. 945–955. https://doi.org/10.1038/jcbfm.2014.33
Santalova, I.M. and Moshkov, D.A., Smooth endoplasmic reticulum in fish Mauthner cells at different functional states, Neurosience, 1999, vol. 89, pp. 593–602. https://doi.org/10.1016/S0306-4522(98)00305-4
Santalova, I.M., Penkova, N.A., Mikheeva, I.B., and Moshkov, D.A., Effect of winter dormancy on three-dimensional structure of the Mauthner neurons in Perccottus glehni fish, Probl. Kriobiol. Kriomed., 2015, vol. 25, pp. 114–121.
Santalova, I.M., Gordon, R.Ya., Mikheeva, I.B., Khutsian, S.S., and Maevsky, E.I., Peculiarities of the structure of glycogen as indicator of the functional state of Mauthner neurons in fish Perccottus glehni during wintering, Neurosci. Lett., 2018, vol. 664, pp. 133–138. https://doi.org/10.1016/j.neulet.2017.11.024
Tang, D., Wang, Ch., Gao, Y., Pua, J., Long, J., and Xu, W., Deep hypothermia-enhanced autophagy protects PC12 cells against oxygen glucose deprivation via a mitochondrial pathway, Neurosci. Lett., 2016, vol. 632, pp. 79–85. https://doi.org/10.1038/srep27642
Vaughn, J.E. and Grieshaber, J.A., An electron microscopic investigation of glycogen and mitochondria in developing and adult rat spinal motor neuropil, J. Neurucytol., 1972, vol. 1, pp. 397–594.
Velickovska, V. and van Breukelen, F., Ubiquitylation of proteins in livers of hibernating golden-mantled ground squirrels, Spermophilus lateralis,Cryobiology, 2007, vol. 55, pp. 230–235. https://doi.org/10.1016/j.cryobiol.2007.08.003
Weis, S.A., Zottoli, S.J., Do, S.C., Faber, D.S., and Preuss, T., Correlation of C-start behaviors with neural activity recorded from the hindbrain of free-swimming goldfish (Carassius auratus), J. Exp. Biol., 209, pp. 4788–4801. https://doi.org/10.1242/jeb.02582
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The study was carried out under a state order to the Institute of Cell Biophysics of the Russian Academy of Sciences, topic no. 0116-2016-0005.
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Statement on the welfare of animals. All experimental procedures were carried out in accordance with the guidelines for the care and use of experimental animals approved by the Animal Ethics Committee in Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences.
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Accepted abbreviations: GA—Golgi apparatus, MN—Mautner neurons, MO—medulla oblongata, ER—endoplasmic reticulum.
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Gordon, R.Y., Santalova, I.M., Mikheeva, I.B. et al. Change in the State of Neurons in the Medulla Oblongata of Fish Perccottus glehni during Wintering (Ultrastructural and Biochemical Studies). Cell Tiss. Biol. 14, 209–217 (2020). https://doi.org/10.1134/S1990519X20030037
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DOI: https://doi.org/10.1134/S1990519X20030037