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Related Experiment Video

Updated: Nov 7, 2025

Extraction and Purification of FAHD1 Protein from Swine Kidney and Mouse Liver
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Ultra-High Packing Density Next Generation Microtube Array Membrane for Absorption Based Applications.

Chee Ho Chew1, Wan-Ting Huang1, Tzu-Sen Yang2

  • 1Graduate Institute of Biomedical Materials & Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11052, Taiwan.

Membranes
|April 30, 2021
PubMed
Summary

A novel extracorporeal endotoxin removal device (EERD) using alternating microtube array membranes (MTAM-A) shows superior endotoxin removal compared to commercial devices. This advancement in membrane technology offers improved patient outcomes by more effectively clearing endotoxins.

Keywords:
microtube array membrane (MTAM)polymyxin Bsepsistriaxial electrospinningultra-high packing density

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Area of Science:

  • Biomaterials Engineering
  • Membrane Science
  • Medical Device Development

Background:

  • Developing effective extracorporeal endotoxin removal devices (EERD) is crucial for managing sepsis and endotoxemia.
  • Previous generations of microtube array membranes (MTAM) showed promise but had limitations in packing density and efficiency.
  • Commercial endotoxin removal filters exist but may not offer optimal performance across all clinical scenarios.

Purpose of the Study:

  • To engineer and characterize novel microtube array membrane (MTAM) structures with enhanced properties for endotoxin removal.
  • To develop an improved EERD utilizing a new generation of MTAM, termed MTAM-A.
  • To evaluate the performance of the MTAM-A based EERD against a commercial endotoxin removal device.

Main Methods:

  • Fabrication of multiple MTAM variants using a proprietary tri-axial electrospinning setup with a single spinneret.
  • Characterization of MTAM microstructures, surface area, tensile strength, and elongation.
  • Immobilization of polymyxin B (PMB) onto MTAM-A and assembly into a custom dialyzer housing.
  • In vitro testing of the EERD with whole blood spiked with endotoxin, benchmarking against commercial Toraymyxin fibers.

Main Results:

  • The MTAM-A exhibited a significantly higher fiber packing density and surface area (2.2x) compared to traditional single-layered MTAM.
  • MTAM-A demonstrated superior mechanical properties, including tensile strength (1.02 ± 0.13 MPa) and elongation (57.70 ± 9.42%).
  • The MTAM-A based EERD achieved a 73.18% endotoxin reduction in 15 minutes and 89.43% total removal, significantly outperforming the commercial device (38.78% and 65.03%, respectively).

Conclusions:

  • The novel MTAM-A structure, fabricated via a unique single-spinneret electrospinning method, offers enhanced surface area and mechanical robustness.
  • The MTAM-A based EERD demonstrates significantly superior endotoxin removal efficiency compared to current commercial technologies.
  • This advanced EERD holds potential for improved clinical management of endotoxemia and sepsis.