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25 Results Found

  • Article
  • Open Access
1 Citations
2,846 Views
18 Pages

Shell nacre from Pinctada species has been extensively researched for managing bone defects. However, there is a gap in the research regarding using shell nacre powder as a cement with improved biological and physicochemical properties. To address th...

  • Article
  • Open Access
7 Citations
3,082 Views
19 Pages

In Vitro Osteogenesis Study of Shell Nacre Cement with Older and Young Donor Bone Marrow Mesenchymal Stem/Stromal Cells

  • Bridget Jeyatha Wilson,
  • Heather Elizabeth Owston,
  • Neelam Iqbal,
  • Peter V. Giannoudis,
  • Dennis McGonagle,
  • Hemant Pandit,
  • Lizymol Philipose Pampadykandathil,
  • Elena Jones and
  • Payal Ganguly

Bone void-filling cements are one of the preferred materials for managing irregular bone voids, particularly in the geriatric population who undergo many orthopedic surgeries. However, bone marrow mesenchymal stem/stromal cells (BM-MSCs) of older-age...

  • Article
  • Open Access
7 Citations
2,359 Views
22 Pages

12 May 2023

The nacre has excellent impact resistance performance, and it is attracting attention in the field of aerospace composite research. Inspired by the layered structure from nacre, semi-cylindrical nacre-like composite shells of brittle silicon carbide...

  • Article
  • Open Access
9 Citations
3,028 Views
7 Pages

23 June 2022

As the main insulation of high-voltage motors, the poor mechanical and thermal conductivities of mica paper restrict the motor’s technological advances. This paper prepared multilayer toughening mica composites with a highly ordered “bric...

  • Article
  • Open Access
29 Citations
10,682 Views
29 Pages

Nacre in Molluscs from the Ordovician of the Midwestern United States

  • Michael J. Vendrasco,
  • Antonio Checa,
  • William P. Heimbrock and
  • Steven D.J. Baumann

Nacre was previously thought to be primitive in the Mollusca, but no convincing Cambrian examples are known. This aragonitic microstructure with crystal tablets that grow within an organic framework is thought to be the strongest, most fracture-resis...

  • Article
  • Open Access
33 Citations
7,218 Views
14 Pages

Molecular Characterization of the BMP7 Gene and Its Potential Role in Shell Formation in Pinctada martensii

  • Fang Yan,
  • Shaojie Luo,
  • Yu Jiao,
  • Yuewen Deng,
  • Xiaodong Du,
  • Ronglian Huang,
  • Qingheng Wang and
  • Weiyao Chen

17 November 2014

Bone morphogenetic protein 7 (BMP7), also called osteogenetic protein-1, can induce bone formation. In this study, the obtained full-length cDNA of BMP7 from Pinctada martensii (Pm-BMP7) was 2972 bp, including a 5'-untranslated region (UTR) of 294 b...

  • Article
  • Open Access
1 Citations
7,680 Views
15 Pages

27 February 2012

Mollusk shells, especially the nacre, are of commercial interest as well as palaeoenvironmental proxies. They are also investigated as biomaterials for medical purposes and biomimetics. Although the mineralogy is well-known and unique (aragonite tabl...

  • Article
  • Open Access
2 Citations
1,685 Views
12 Pages

4 September 2024

Pearl oyster shells are composed of a double layer of calcium carbonate polymorphs: prismatic and nacreous. The nacreous layer is used in functional foods and cosmetics. In an earlier work, we reported that sulfated polysaccharides in nacre extract a...

  • Article
  • Open Access
5 Citations
3,802 Views
19 Pages

Pearl oysters have been extensively utilized in pearl production; however, most pearl oyster shells are discarded as industrial waste. In a previous study, we demonstrated that the intraperitoneal administration of pearl oyster shell-derived nacre ex...

  • Article
  • Open Access
1 Citations
708 Views
16 Pages

16 November 2025

Pearl color is the primary determinant of its value, and the mantle donor tissue (saibo) used in pearl culture plays a critical role in color formation. To elucidate the molecular mechanisms underlying nacre color, we performed comparative transcript...

  • Review
  • Open Access
303 Views
64 Pages

Nacre and Nacre-Inspired Materials: Historical Background, Definition, Fabrication Techniques and Gaps

  • Naim Sedira,
  • João Castro-Gomes,
  • Jorge Pinto,
  • Pengkou Hou and
  • Sandra Pereira

16 February 2026

From Palaeolithic ornaments to modern biomimetics, the use of nacre and shells has evolved. Initially utilised for jewellery and tools, they now inspire the development of advanced materials. This paper reviews the current knowledge on nacre’s...

  • Article
  • Open Access
17 Citations
8,581 Views
10 Pages

19 March 2012

Nacre, or mother of pearl, is composed of aragonite tablets and is produced by some mollusks. Because of the highly organized internal structure, chemical complexity, mechanical properties and optical effects of nacre, its formation is among the best...

  • Article
  • Open Access
5 Citations
3,334 Views
15 Pages

Fibrous or Prismatic? A Comparison of the Lamello-Fibrillar Nacre in Early Cambrian and Modern Lophotrochozoans

  • Luoyang Li,
  • Marissa J. Betts,
  • Hao Yun,
  • Bing Pan,
  • Timothy P. Topper,
  • Guoxiang Li,
  • Xingliang Zhang and
  • Christian B. Skovsted

11 January 2023

The Precambrian–Cambrian interval saw the first appearance of disparate modern metazoan phyla equipped with a wide array of mineralized exo- and endo-skeletons. However, the current knowledge of this remarkable metazoan skeletonization bio-even...

  • Review
  • Open Access
9 Citations
7,123 Views
20 Pages

23 October 2023

Since ancient times, the shells of marine molluscs have been used as a therapeutic and/or prophylactic resource. In Spain, they were part of practical guides for doctors or pharmacists until the 19th century. In general, seashells were prepared by di...

  • Article
  • Open Access
7 Citations
3,483 Views
14 Pages

Ballistic Behavior of Bioinspired Nacre-like Composites

  • Danny G. Chan-Colli,
  • Eliana M. Agaliotis,
  • David Frias-Bastar,
  • Luming Shen,
  • Jose G. Carrillo,
  • Pedro J. Herrera-Franco and
  • Emmanuel A. Flores-Johnson

In this paper, the ballistic performance of a multilayered composite inspired by the structural characteristics of nacre is numerically investigated using finite element (FE) simulations. Nacre is a natural composite material found in the shells of s...

  • Commentary
  • Open Access
19 Citations
11,623 Views
12 Pages

21 April 2017

Over the last eight years new theories regarding nucleation, crystal growth, and polymorphism have emerged. Many of these theories were developed in response to observations in nature, where classical nucleation theory failed to account for amorphous...

  • Article
  • Open Access
19 Citations
4,773 Views
17 Pages

Biomimetic Nacre-like Hydroxyapatite/Polymer Composites for Bone Implants

  • Parinaz Tabrizian,
  • Huijun Sun,
  • Urangua Jargalsaikhan,
  • Tan Sui,
  • Sean Davis and
  • Bo Su

One of the most ambitious goals for bone implants is to improve bioactivity, incapability, and mechanical properties; to reduce the need for further surgery; and increase efficiency. Hydroxyapatite (HA), the main inorganic component of bones and teet...

  • Article
  • Open Access
3 Citations
2,872 Views
22 Pages

Characterization of Magnetic Nanoparticles from the Shells of Freshwater Mussel L. fortunei and Marine Mussel P. perna

  • Antonio Valadão Cardoso,
  • Clara Carvalho Souza,
  • Maria Sylvia Dantas,
  • Camila Schults Machado,
  • Erico Tadeu Freitas,
  • Alisson Krohling,
  • Veronica Martins Rosario,
  • Giancarlo Ubaldo Nappi and
  • Luiz Dias Heneine

10 July 2023

Magnetite (Fe3O4) nanoparticles were extracted from the shells of freshwater Limnoperna fortunei (Dunker 1857) and marine Perna perna (Linnaeus 1758) mussels, followed by full physical and chemical characterization using ICP-OES, UV–Vis, EDX, R...

  • Article
  • Open Access
3 Citations
1,356 Views
14 Pages

30 August 2025

Nacre, the iridescent inner layer of mollusk shells, has long been traditionally used in medicine. While we have previously demonstrated its anti-aging effects on muscle and skin, its impact on pancreatic dysfunction and glucose metabolism remains un...

  • Article
  • Open Access
5 Citations
4,289 Views
22 Pages

24 September 2022

Organisms hold an extraordinarily evolutionary advantage in forming complex, hierarchical structures across different length scales that exhibit superior mechanical properties. Mimicking these structures for synthesizing high-performance materials ha...

  • Review
  • Open Access
77 Citations
15,051 Views
16 Pages

18 September 2018

Marine organisms represent a highly diverse reserve of bioactives which could aid in the treatment of a wide range of diseases, including various musculoskeletal conditions. Osteoporosis in particular would benefit from a novel and effective marine-b...

  • Article
  • Open Access
12 Citations
4,941 Views
15 Pages

Synthesis and Tribological Properties of Bio-Inspired Nacre-Like Composites

  • Hang Zhang,
  • Shuhai Liu,
  • Huaping Xiao and
  • Xun Zhang

30 August 2018

Ceramic materials possessing the properties of high-strength and rigidity are widely used in industry. The shell nacre has a layered structure containing both macroscopic and microscopic levels and is equipped with superior qualities regarding hardne...

  • Article
  • Open Access
12 Citations
3,336 Views
19 Pages

27 July 2022

Biological armors can provide an effective protection against predators. In this study, inspired by conch shell, beetle exoskeleton, and nacre, three different types of bionic composites plates were fabricated: Bio-S, Bio-B, and Bio-N, as well as an...

  • Article
  • Open Access
16 Citations
11,950 Views
20 Pages

15 November 2018

Natural resources such as plants, animals and minerals have always been used by mankind to develop drugs and marine world is no exception. Marine by-products like conches, pearls, mother of pearl shells, corals and so forth have been used by traditio...

  • Article
  • Open Access
25 Citations
7,533 Views
38 Pages

25 November 2020

Oysters and clams are important for food security and of commercial value worldwide. They are affected by anthropogenic changes and opportunistic pathogens and can be indicators of changes in ocean environments. Therefore, studies into biomarker disc...