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Related Concept Videos

Fibril-associated Collagen01:11

Fibril-associated Collagen

Fibril-associated collagens are a type of collagens present in the extracellular matrix with interrupted triple helices or FACIT (Fibril-associated collagens interrupted triple-helices). FACIT help connect and attach the collagen fibrils with each other as well as with other proteins of the extracellular matrix.
For example, the type II collagen fibrils in cartilage have covalently bound type IX fibril-associated collagens at regular intervals. Other types of fibril-associated collagens are...
Collagens are the Major Structural Proteins of ECM01:13

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Three main types of fibers are secreted by fibroblasts: collagen fibers, elastic fibers, and reticular fibers. Collagen fiber is made from fibrous protein subunits linked together to form a long, straight fiber. Collagen fibers, while flexible, have great tensile strength, resist stretching, and give ligaments and tendons their characteristic resilience and strength. These fibers hold connective tissues together, even during the body's movement.
Connective tissue proper includes loose...
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Type IV Collagen of Basal Lamina

Type IV collagen is a 400 nm long, network-forming collagen that acts as a barrier between the epithelial and endothelial cells. Type IV collagen  forms the backbone of the basement membrane by scaffolding with laminin, entactin, proteoglycans, and fibronectin. Apart from rendering structural support to the basement membrane, it also helps entail signaling potentials necessary for both pathological and physiological functions.
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Structural Protein Function01:56

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Fibrous Proteins00:55

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Production of Nanofibrillar Patterned Collagen for Tissue Engineering
07:34

Production of Nanofibrillar Patterned Collagen for Tissue Engineering

Published on: September 20, 2024

Collagen fabrics as biomaterials.

J F Cavallaro1, P D Kemp, K H Kraus

  • 1Department of Matrix Engineering, Organogenesis Inc, 150 Dan Road, Canton, Massachusetts 02021, USA.

Biotechnology and Bioengineering
|April 5, 1994
PubMed
Summary
This summary is machine-generated.

New collagen fabrics, made from continuous threads, show promise for tissue engineering. These biocompatible implants remodel into host tissue, successfully replacing ligaments and repairing abdominal walls in animal models.

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Regenerative Medicine

Background:

  • Tissue-engineered implants require biomaterials that mimic native tissue function and promote host integration.
  • Current biomaterials face challenges in achieving both structural integrity and effective tissue remodeling.
  • Development of novel scaffold materials is crucial for advancing tissue repair and replacement therapies.

Purpose of the Study:

  • To develop and characterize implantable fabrics from continuous collagen threads for tissue engineering applications.
  • To evaluate the in vivo performance and host tissue integration of these collagen fabrics.
  • To assess the potential of collagen fabrics as scaffolds for ligament replacement and abdominal wall repair.

Main Methods:

  • Continuous collagen threads were fabricated via extrusion of acid-extracted bovine collagen into polyethylene glycol solution, followed by rinsing and air drying.
  • Collagen fabrics were produced in various configurations, including braids, bundles, and knitted structures, with controlled fiber diameters down to 25 microm.
  • Implantation studies were conducted in a canine anterior cruciate ligament (ACL) model and a rat abdominal repair model.

Main Results:

  • Canine ACL replacement with collagen thread braids and bundles resulted in complete remodeling into host tissue by 12 weeks post-implantation.
  • Knitted collagen fabrics implanted for abdominal wall repair in rats prevented herniation and demonstrated significant connective tissue ingrowth within 12 weeks.
  • The manufacturing process allows for high production rates and control over collagen fiber diameter, enabling versatile fabric configurations.

Conclusions:

  • Implantable collagen fabrics manufactured from continuous threads represent a promising biomaterial for tissue engineering.
  • These collagen scaffolds facilitate complete host tissue remodeling and integration, demonstrating efficacy in both ligament reconstruction and abdominal repair models.
  • The controlled fabrication process and successful in vivo outcomes support the potential of collagen fabrics for diverse clinical applications in regenerative medicine.