Biogenic magnetite in the nematode
            <i>Caenorhabditis elegans</i>

Cranfield, Charles G.; Dawe, Adam; Karloukovski, Vassil; Dunin‐Borkowski, Rafal E.; Pomerai, David de; Dobson, Jon

doi:10.1098/rsbl.2004.0209

Cited by 25 publications

(18 citation statements)

References 23 publications

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“…The LF thorax line was related to large particles as those of natural mineral magnetite [30] as observed for whole bodies of another Solenopsis species [4]. The HF 0 component observed in the spectra of the three body parts has been associated to FeOOH [31], considered as the precursor of biogenic magnetite in bacteria, nematodes, and bees [32,33,15].…”

Section: Discussionmentioning

confidence: 99%

Magnetic material in head, thorax, and abdomen of Solenopsis substituta ants: A ferromagnetic resonance study

Abraçado

Esquivel

Alves

et al. 2005

Journal of Magnetic Resonance

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Section: Discussionmentioning

confidence: 99%

Magnetic material in head, thorax, and abdomen of Solenopsis substituta ants: A ferromagnetic resonance study

Abraçado

Esquivel

Alves

et al. 2005

Journal of Magnetic Resonance

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“…Several studies have combined direct and indirect approaches, such as optical and electron microscopy with SQUID, in the search for an MPM system (table 4) [64,80,82,[84][85][86][87][88][89][90][91][92][93][94][95][96].…”

Section: Combined Direct and Indirect Observationsmentioning

confidence: 99%

Magnetic particle-mediated magnetoreception

Shaw

Boyd

House

et al. 2015

J. R. Soc. Interface.

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Behavioural studies underpin the weight of experimental evidence for the existence of a magnetic sense in animals. In contrast, studies aimed at understanding the mechanistic basis of magnetoreception by determining the anatomical location, structure and function of sensory cells have been inconclusive. In this review, studies attempting to demonstrate the existence of a magnetoreceptor based on the principles of the magnetite hypothesis are examined. Specific attention is given to the range of techniques, and main animal model systems that have been used in the search for magnetite particulates. Anatomical location/cell rarity and composition are identified as two key obstacles that must be addressed in order to make progress in locating and characterizing a magnetite-based magnetoreceptor cell. Avenues for further study are suggested, including the need for novel experimental, correlative, multimodal and multidisciplinary approaches. The aim of this review is to inspire new efforts towards understanding the cellular basis of magnetoreception in animals, which will in turn inform a new era of behavioural research based on first principles.

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“…It is suggested that endogenous magnetic material, previously reported in C . elegans , may be also involved (26,31). In our experiments, the locomotive behavior of Group C worms, which do not contain any particles, does not seem to be affected by the externally applied MF (Fig.…”

Section: The Impact Of Internally Localized Magnetic Fields On C Elementioning

confidence: 45%

Caenorhabditis elegans locomotion is affected by internalized paramagnetic nanoparticles in the presence of magnetic field

Gourgou

Zhang

Mirzakhalili

et al. 2018

Preprint

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C . elegans with internalized magnetic nanoparticles are placed inside magnetic field to explore effects on locomotion. We hypothesize that internal magnetic fields created by nanoparticles induce localized effects on C . elegans ' locomotion machinery. To test our hypothesis, we use young adult hermaphrodite C . elegans fed on E . coli OP50 mixed with magnetic/paramagnetic nanoparticles of 1μm, 100nm and 40nm diameter. The presence of particles inside the worms' body is verified by fluorescent and electron microscopy. A custom-made software is used to track freely moving C . elegans in the absence or presence of magnetic field sequentially for 200+200sec. We use established metrics to quantify locomotion-related parameters, including posture, motion and path features. Results show that key features of C . elegans locomotion (e.g., speed, number of bends, motion state and range) are affected by the magnetic field in worms with internalized particles, in contrast to untreated worms, which remain unaffected. Our work contributes on clarifying the magnetic field effect on C . elegans locomotion and introduces C . elegans as a potential model system to explore in vivo the effect of magnetic field gradient on living organisms.

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Biogenic magnetite in the nematode Caenorhabditis elegans

Cited by 25 publications

References 23 publications

Magnetic material in head, thorax, and abdomen of Solenopsis substituta ants: A ferromagnetic resonance study

Magnetic material in head, thorax, and abdomen of Solenopsis substituta ants: A ferromagnetic resonance study

Magnetic particle-mediated magnetoreception

Caenorhabditis elegans locomotion is affected by internalized paramagnetic nanoparticles in the presence of magnetic field

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