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Histone Modification02:32

Histone Modification

16.0K
The histone proteins have a flexible N-terminal tail extending out from the nucleosome. These histone tails are often subjected to post-translational modifications such as acetylation, methylation, phosphorylation, and ubiquitination. Particular combinations of these modifications form “histone codes” that influence the chromatin folding and tissue-specific gene expression.
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone...
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Histone Modification02:32

Histone Modification

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Spreading of Chromatin Modifications02:25

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The histone proteins in the nucleosomes are post-translationally modified (PTM) to increase or decrease access to DNA. The commonly observed PTMs are methylation, acetylation, phosphorylation, and ubiquitination of lysine amino acids in the histone H3 tail region. These histone modifications have specific meaning for the cell. Hence, they are called "histone code". The protein complex involved in histone modification is termed as "reader-writer" complex.
Writers
The writer...
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Behavior Modification01:21

Behavior Modification

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Behavioral approaches have often been criticized for ignoring mental processes and focusing solely on observable behavior. However, these approaches provide an optimistic perspective for individuals seeking to change their behaviors. Rather than concentrating on intrinsic personality traits, behavioral approaches suggest that even longstanding habits can be modified by changing the reward contingencies that maintain them.
A real-world application of operant conditioning principles is applied...
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Extraction: Advanced Methods00:56

Extraction: Advanced Methods

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Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
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Overview of Advanced Functional Groups02:22

Overview of Advanced Functional Groups

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Functional groups are groups of atoms with specific chemical properties that occur within organic molecules and are sometimes denoted as “R”. Functional groups can “functionalize” a compound by enabling it to adopt different physical and chemical properties.
Types of Advanced Functional Groups
The table below summarizes some of the major functional groups in organic chemistry.
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Updated: Jan 23, 2026

Oral Biofilm Formation on Different Materials for Dental Implants
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[Advances in titanium dental implant surface modification].

Bang-Cheng Yang1, Xue-Dong Zhou2, Hai-Yang Yu3

  • 1Engineering Research Center in Biomaterials, Sichuan University & Sichuan Guojia Biomaterials Co., Ltd, Chengdu 610064, China.

Hua Xi Kou Qiang Yi Xue Za Zhi = Huaxi Kouqiang Yixue Zazhi = West China Journal of Stomatology
|June 7, 2019
PubMed
Summary

Surface modifications enhance titanium dental implants by improving osseointegration and preventing complications like peri-implantitis. This review covers physical, chemical, and biological coating strategies for better implant success.

Keywords:
dental implantssurface coatingsurface modificationtitanium

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Imaging Cell Viability on Non-transparent Scaffolds — Using the Example of a Novel Knitted Titanium Implant
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Area of Science:

  • Biomaterials Science
  • Dental Implantology
  • Surface Engineering

Background:

  • Titanium dental implants are widely used for their benefits like aesthetics and comfort.
  • Challenges include osseointegration failure, bone resorption, and peri-implantitis, limiting implant longevity.
  • Surface modifications are crucial for improving implant performance and clinical outcomes.

Purpose of the Study:

  • To review surface modification techniques for titanium dental implants.
  • To explore physical, chemical, and biological approaches to enhance implant surfaces.
  • To provide insights for future research and clinical applications of dental implant materials.

Main Methods:

  • Comprehensive literature review of surface modification strategies for titanium implants.
  • Analysis of physical, chemical, and biological coating characteristics.
  • Evaluation of how these modifications impact osseointegration and implant success.

Main Results:

  • Surface modifications, including physical-chemical and bioactive coatings, can significantly improve titanium implant success rates.
  • These strategies address key failure modes such as poor osseointegration and peri-implantitis.
  • The review categorizes modifications based on physical, chemical, and biological principles.

Conclusions:

  • Surface modification is a critical factor in optimizing titanium dental implant performance.
  • Tailored physical, chemical, and biological coatings offer promising solutions to current clinical limitations.
  • Further research and application of these modified materials can enhance patient outcomes in dental implantology.