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词条 Draft:Magnetocyte
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  1. References

{{AFC submission|d|nn|u=193.65.93.106|ns=118|decliner=David.moreno72|declinets=20180430121843|ts=20180430111110}} {{AFC submission|d|nn|u=193.65.93.106|ns=118|decliner=Graeme Bartlett|declinets=20180425235950|small=yes|ts=20180425113333}} {{AFC comment|1=There seems to be some confusion over the difference between cells that contain magnetosomes and a Magnetocyte. Of the ten references that are used to support the statement 'Magnetocytes are found in many animals brains including human', NONE, I repeat, NONE actually mention the term magnetosomes. I'm sorry, but this is not how references work. A reference MUST mention the topic. David.moreno72 12:18, 30 April 2018 (UTC)}}{{ comment, ten first reference show that brain contain magnetite, ref 11-13 speak magnetosome. Magnetite is in cells called magnetosome. So magnetite proof magnetosome, magnetosome proof magnetocyte.}}{{AFC comment|1=The sources look to be very fringe, not written by experts in the topic of cells, and have not had their ideas supported by anyone else, say in a review. The first reference hardly mentions the topic. When I look for the term it seems to be very little used, and not in reliable sources. Atsuko Kobayashi seems to have presented this topic at meetings, but is anything published? Graeme Bartlett (talk) 23:59, 25 April 2018 (UTC)}}

comment 2 Information about magnetocyte is very rare. There is more information about brain magnetite. If magnetite exist it naturally is in cells. And there is information that specific cell type containing magnetite/magnetosomes exist. Sorry I cant find more material. New cell type information is exremely important to publish, it may generate some magnetobilogical expert to add more data later.

Magnetocyte Is living organ cell that contain magnetite crystall structures

[1] called magnetosomes.

[2][3]

Magnetite crystals are found in many animals brains including human.

[4][5][6][7][8][9][10][11][12][13]

In human brains there are at least two types of magnetocytes. One differentiating from brain cells and another from immune system cells.

[14]

Magnetocyte density in brain tissues amounts to 1–2 cells per 1 g of tissue, though concentrations are higher in the thalamic nuclei and hippocampus.

[15]

Magnetite concentration varies between 3-10 ng/g tissue (human brain) and in mouse brain range from 0.6 to 17.1 ng/g tissue, average 4.8 ± 4.0 ng/g tissue.

[16][17][18]

There are findings in many mammalian brain tissues magnetite crystals containing cells called magnetocyte. Magnetocytes exist only less than 1/5000 number of brain cells. Magnetite crystals are in magnetosomes that are inside magnetocyte. Mammalian magnetosomes are different from bacterial one. There are smaller super paramagnetic magnetite crystalls in magnetocyte. In mammalian magnetocytes there is from 1000 to 10000 small 10nm magnetite crystals and magnetite is not arranged linear chains like in magnetotactic bacteria. It can be say that magnetite crystals in such cells are arranged position that geomagnetic field don't disturbate them. Magnetocytes function is yet unknown and function are definitely not to detect geomagnetic field.

[19]

Magnetoacoustic sense need to investigate. It is posible that Shuman 7.8Hz resonance carry information between magnetocytes.

[20][21]

References

1. ^http://web.gps.caltech.edu/~jkirschvink/pdfs/Eder_Trout_Magnetocyte_PNAS2012.pdf
2. ^https://docslide.net/documents/microwave-absorption-by-magnetite-a-possible-mechanism-for-coupling-nonthermal.html, page 82, 87
3. ^AGU. [https://authors.library.caltech.edu/50920/1/eost10075.pdf "Rock Magnetisim Linked to Human Brain Magnetite"], Eos, Eos, Vol. 75, No. 15, April 12, 1994 pages 178-179.
4. ^{{Cite book|doi = 10.1007/978-94-007-4372-4_6|chapter = Magnetite Minerals in the Human Brain: What is Their Role?|title = Medical Geochemistry|pages = 91–99|year = 2013|last1 = Zuddas|first1 = Pierpaolo|last2 = Faivre|first2 = D|last3 = Duhamel|first3 = J. R|isbn = 978-94-007-4371-7}}
5. ^{{Cite journal|pmc = 49775|year = 1992|last1 = Kirschvink|first1 = J. L|title = Magnetite biomineralization in the human brain|journal = Proceedings of the National Academy of Sciences of the United States of America|volume = 89|issue = 16|pages = 7683–7687|last2 = Kobayashi-Kirschvink|first2 = A|last3 = Woodford|first3 = B. J|pmid = 1502184|bibcode = 1992PNAS...89.7683K|doi = 10.1073/pnas.89.16.7683}}
6. ^https://www.sciencedirect.com/science/article/pii/S030698770900629X
7. ^https://pdfs.semanticscholar.org/fde1/05cb5a3451e7793385e05698e65f5da5f89f.pdf
8. ^https://www.medical-hypotheses.com/article/S0306-9877(13)00526-4/fulltext
9. ^https://www.ethz.ch/content/dam/ethz/special-interest/erdw/geophysics/epm-dam/images/lnm/posters/poster-6.pdf
10. ^https://ieeexplore.ieee.org/abstract/document/691618/
11. ^{{Cite journal|doi = 10.1029/2006JB004570|title = Anomalous magnetic properties of brain tissue at low temperature: The 50 K anomaly|journal = Journal of Geophysical Research: Solid Earth|volume = 111|issue = B12|pages = n/a|year = 2006|last1 = Hirt|first1 = Ann M|last2 = Brem|first2 = Franziska|last3 = Hanzlik|first3 = Marianne|last4 = Faivre|first4 = Damien|bibcode = 2006JGRB..11112S06H}}
12. ^https://books.google.fi/books?id=PZd_2UJrwdwC&pg=PA191&lpg=PA191&dq=brain+magnetite&source=bl&ots=fWoKiT3kKf&sig=cct0Nvm6YMDreMitkn7WOFHlmqo&hl=fi&sa=X&ved=0ahUKEwjt1rDr6eHaAhXBIJoKHSUnB2o4KBDoAQhKMAU#v=onepage&q=brain%20magnetite&f=false
13. ^https://www.medical-hypotheses.com/article/S0306-9877(15)00144-9/fulltext
14. ^[https://onlinelibrary.wiley.com/doi/epdf/10.1002/1097-0142%2819950815%2976%3A4%3C709%3A%3AAID-CNCR2820760427%3E3.0.CO%3B2-C "A report on the first lebow conference"], 1995 pages 711.
15. ^[https://www.researchgate.net/publication/7956379_Actions_of_pulsed_ultra-broadband_electromagnetic_irradiation_on_the_EEG_and_sleep_in_laboratory_animals "Actions of Pulsed Ultra-Broadband Electromagnetic Irradiation on the EEG and Sleep in Laboratory Animals"], Neuroscience and Behavioral Physiology, Neuroscience and Behavioral Physiology , Vol. 35, No. 2, 2005 page 166.
16. ^https://docslide.net/documents/microwave-absorption-by-magnetite-a-possible-mechanism-for-coupling-nonthermal.html, page 79
17. ^https://resonance.is/mapping-magnetite-in-the-human-brain/
18. ^https://www.nature.com/articles/s41598-018-29766-z
19. ^AGU. [https://authors.library.caltech.edu/50920/1/eost10075.pdf "Rock Magnetisim Linked to Human Brain Magnetite"], Eos, Eos, Vol. 75, No. 15, April 12, 1994 pages 178-179.
20. ^PAGS [https://push-zb.helmholtz-muenchen.de/deliver.php?id=13814 "Magnetoacoustic sensing"]
21. ^JpGU-AGU 2017[https://confit.atlas.jp/guide/event/jpguagu2017/subject/SEM18-16/detail "Magnetoacoustic sensing"
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