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Following injury, the integrity of the injured tissues must be reestablished. For example, in skin tissue, wound repair involves coordination among resident skin cells, blood mononuclear cells, extracellular matrix, growth factors, and cytokines to complete the healing cascade.
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Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
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Lipids include a diverse group of compounds that are largely nonpolar in nature. This is because they are hydrocarbons that include mostly nonpolar carbon-carbon or carbon-hydrogen bonds. Non-polar molecules are hydrophobic (“water fearing”), or insoluble in water. Lipids perform many different functions in a cell. Cells store energy for long-term use in the form of fats. Lipids also provide insulation from the environment for plants and animals. For example, they help keep aquatic...
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Viruses are extraordinarily diverse in shape and size, but they all have several structural features in common. All viruses have a core that contains a DNA- or RNA-based genome. The core is surrounded by a protective coat of proteins called the capsid. The capsid is composed of subunits called capsomeres. The capsid and genome-containing core are together known as the nucleocapsid.
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Fibrin structure and wound healing.

N Laurens1, P Koolwijk, M P M de Maat

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Fibrinogen and fibrin are crucial for wound healing, influencing cell interactions and blood clotting. Their structure and interactions with cells and proteins determine repair outcomes, with variants impacting angiogenesis and wound treatment potential.

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Area of Science:

  • Biochemistry
  • Cell Biology
  • Wound Healing Research

Background:

  • Fibrinogen and fibrin are key proteins in hemostasis, inflammation, and tissue repair.
  • Their roles extend to cellular interactions, matrix remodeling, and angiogenesis.
  • The specific characteristics of fibrin(ogen) and its binding interactions are critical for biological processes.

Purpose of the Study:

  • To review the molecular and cellular biology of fibrinogen and fibrin in cutaneous wound repair.
  • To highlight the importance of fibrin structure and its interactions in healing.
  • To discuss the potential of fibrin variants and sealants in wound management.

Main Methods:

  • Literature review focusing on molecular and cellular aspects of fibrinogen and fibrin.
  • Analysis of fibrin structure-property relationships in wound healing.
  • Examination of fibrinogen interactions with hemostasis proteins, platelets, and various cell types.

Main Results:

  • Fibrin structure (fiber thickness, branching, porosity) significantly impacts wound healing outcomes.
  • Interactions between fibrin(ogen), clotting factors, and cell receptors are indispensable for repair.
  • High- and low-molecular-weight fibrinogen variants differentially affect angiogenesis and cell growth.

Conclusions:

  • Fibrinogen and fibrin are central to wound repair through complex molecular and cellular interactions.
  • Fibrin structure is a critical determinant of healing efficiency.
  • Fibrin sealants show promise as therapeutic matrices and cell delivery vehicles for chronic wounds.