The response to the intramuscular implantation of pure metals

McNamara, A.; Williams, David

doi:10.1016/0142-9612(81)90085-5

Cited by 70 publications

(15 citation statements)

References 16 publications

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“…In such a case, one must stimulate the tissue to regenerate by putting an artificial scaffold on the defective part. [1][2][3] That is, the scaffold plays a significant role in the tissue engineering. [4][5][6][7][8][9][10] Ideally, the scaffold should be gradually absorbed as the tissue is regenerated in the scaffold and should be completely absorbed and replaced with the tissue when the tissue is completely regenerated.…”

Section: Introductionmentioning

confidence: 99%

Decomposition rate control of PLLA plate by heat treatment

Nakagawa

Teraoka

Sohmura

2010

J of Applied Polymer Sci

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It is difficult to control the decomposition rate and the mechanical property of scaffolds after forming the poly(L-lactide) (PLLA) scaffolds. The purpose of this study is to control the decomposition rate and mechanical properties of the PLLA plate after forming. We carried out accelerated decomposition experiments using the enzyme on the (PLLA) with various crystallinity, which were prepared by changing the heat treatment condition, and elucidated the relationship between the crystallinity and the decomposition rate. A high positive correlation was observed between the heat treatment temperature and the crystallinity. A high negative correlation was observed between the crystallinity and the decomposition rate. Using the obtained empirical formula, it became possible to calculate the required period to decompose a certain amount of the PLLA if the heat treatment temperature was known. Changing the crystallinity of the PLLA plate could arbitrarily control the decomposition rate of the PLLA plate after forming.

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Section: Introductionmentioning

confidence: 99%

Decomposition rate control of PLLA plate by heat treatment

Nakagawa

Teraoka

Sohmura

2010

J of Applied Polymer Sci

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“…Metal iron, which is the essential component for nanotube growth, has to be removed completely because metal-related toxicity was proved [20][21][22]. Therefore, thermal treatment process (up to 2800 o C) will be very helpful for getting highly purified carbon nanotubes by evaporating metal particles contained in carbon nanotubes (see Table 1).…”

Section: Cnt Materialsmentioning

confidence: 99%

Role of systemic T-cells and histopathological aspects after subcutaneous implantation of various carbon nanotubes in mice

Koyama

Endo

Kim

et al. 2006

Carbon

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We have evaluated the biological responses to four different types of carbon nanotubes (CNTs), by measuring CD4 + and CD8 + T-cells in peripheral blood, and by the histopathological study on tissues surrounding subcutaneously implanted CNTs for up to 3 months. All mice survived, and no large changes in their weights were observed within our experimental period. After one week, only single walled carbon nanotubes samples. It is worth noting that the toxicological response of CNTs was absolutely lower than that of asbestos. As a result, we envisaged that our result (relatively low toxicity of CNTs) will spur the mass-production, as well widespread application of CNTs in the 1 near future.

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“…In general, dissolved metal elements are known to cause toxicity in live organs [19,20]. In addition, the metals in asbestos are reported to act as catalysts to create reactive oxygen compounds that damage DNA and other vital cellular components [15].…”

Section: Introductionmentioning

confidence: 99%

Removal of entrapped iron compounds from isothermally treated catalytic chemical vapor deposition derived multi-walled carbon nanotubes

Chen¹,

Kuno

Matsuo

et al. 2008

Carbon

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We have monitored the compositional changes of the residual metallic compounds in isothermally treated catalytic chemical vapor deposition derived multi-walled carbon nanotubes systematically using 57 Fe transmission Mössbauer and X-ray fluorescence. The iron phases entrapped in the as-synthesized carbon nanotubes consist of γ-iron, α-iron, Fe 3 C and Fe 1-x S. The Fe 1-x S phase decomposes completely around 1500 °C while the iron carbide phase decomposes in the temperature range of 1500 -2400 °C. The obtained apparent activation energy of ca. 76 kcal/mol suggests that the entrapped iron was removed via a diffusion process during thermal treatment.

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The response to the intramuscular implantation of pure metals

Cited by 70 publications

References 16 publications

Decomposition rate control of PLLA plate by heat treatment

Decomposition rate control of PLLA plate by heat treatment

Role of systemic T-cells and histopathological aspects after subcutaneous implantation of various carbon nanotubes in mice

Removal of entrapped iron compounds from isothermally treated catalytic chemical vapor deposition derived multi-walled carbon nanotubes

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