On the Nature of the Transparent Teeth of the Deep-Sea Dragonfish, Aristostomias scintillans

Velasco‐Hogan, Audrey; Deheyn, Dimitri D.; Koch, Marcus; Nothdurft, Birgit; Arzt, Eduard; Meyers, Marc A.

doi:10.1016/j.matt.2019.05.010

Cited by 30 publications

(31 citation statements)

References 34 publications

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“…Many fish larvae have transparent bones, and part of the cranium of barreleye fish remains transparent during their lifetime, but the underlying physical principles are poorly understood (Robison and Reisenbichler, 2008) [62]. It was shown that the heavily mineralized teeth of the deep-sea dragonfish remain unusually transparent (in order to optically trick their prey), as they have special nanostructured dentin consisting of a woven pattern of nanometer rods (5 nm in diameter with 0.8 nm spacing) that nearly eliminates light scattering (Velasco-Hogan et al, 2019) [95]. This may be the key to engineering bone clearing in vivo—to discover how it happens naturally in fish.…”

Section: In Vivo Transparency Of Bones and Other Mineralized Tissuementioning

confidence: 99%

Tissue Transparency In Vivo

et al. 2019

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In vivo tissue transparency in the visible light spectrum is beneficial for many research applications that use optical methods, whether it involves in vivo optical imaging of cells or their activity, or optical intervention to affect cells or their activity deep inside tissues, such as brain tissue. The classical view is that a tissue is transparent if it neither absorbs nor scatters light, and thus absorption and scattering are the key elements to be controlled to reach the necessary transparency. This review focuses on the latest genetic and chemical approaches for the decoloration of tissue pigments to reduce visible light absorption and the methods to reduce scattering in live tissues. We also discuss the possible molecules involved in transparency.

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Section: In Vivo Transparency Of Bones and Other Mineralized Tissuementioning

confidence: 99%

Tissue Transparency In Vivo

et al. 2019

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“…From all of the above one can infer that challenges are to be positively accepted. Form follows function [54] and this is why nature defined the evolution of species, as species undergo adaptive changes [55] . A quick look into different species heart morphology allows to understand why the heart has different forms and sizes [56] .…”

Section: The Intellectual Componentmentioning

confidence: 99%

The frontier in Cardiac Surgery is intellectual

Mestres¹,

Pozzoli²,

Taramasso³

et al. 2019

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Cardiac Surgery is a Specialty undergoing profound changes. Since its inception, innovation has been at the forefront of activities seeking for the best of the patients. The introduction of the heart-lung machine in clinical practice in the 1950s of the twentieth century allowed for the correction of intra-and extracardiac defects. The recent past two decades have seen the progressive incorporation of transcatheter therapies to treat a variety of heart defects. Multimodality imaging approach has become a fundamental tool in the pre-intra-and postoperative assessment of patients. The future in Cardiac Surgery contemplates redesigning training programs with the mandatory acquisition of catheter skills, the knowledge of the different imaging modalities and allocation of resources and timing for basic and translational research.

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“…In addition to cornea and fish scales 14 , transparent collagen matrices were recently reported in natural tissues, i.e. elephant ivory 15 and teeth of the deep-sea dragonfish 16 , and in synthetic collagen scaffolds 17 . Transparency of such heterogeneous complex materials remains an intriguing property.…”

mentioning

confidence: 99%

Origin of transparency in scattering biomimetic collagen materials

Salameh

Salviat

Bessot

et al. 2020

Proc. Natl. Acad. Sci. U.S.A.

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Living tissues, heterogeneous at the microscale, usually scatter light. Strong scattering is responsible for the whiteness of bones, teeth, and brain and is known to limit severely the performances of biomedical optical imaging. Transparency is also found within collagen-based extracellular tissues such as decalcified ivory, fish scales, or cornea. However, its physical origin is still poorly understood. Here, we unveil the presence of a gap of transparency in scattering fibrillar collagen matrices within a narrow range of concentration in the phase diagram. This precholesteric phase presents a three-dimensional (3D) orientational order biomimetic of that in natural tissues. By quantitatively studying the relation between the 3D fibrillar network and the optical and mechanical properties of the macroscopic matrices, we show that transparency results from structural partial order inhibiting light scattering, while preserving mechanical stability, stiffness, and nonlinearity. The striking similarities between synthetic and natural materials provide insights for better understanding the occurring transparency.

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On the Nature of the Transparent Teeth of the Deep-Sea Dragonfish, Aristostomias scintillans

Cited by 30 publications

References 34 publications

Tissue Transparency In Vivo

Tissue Transparency In Vivo

The frontier in Cardiac Surgery is intellectual

Origin of transparency in scattering biomimetic collagen materials

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