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  • 1.
    Buznyk, Oleksiy
    et al.
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för cellbiologi. Linköpings universitet, Medicinska fakulteten. National Academic Medical Science Ukraine, Ukraine.
    Pasyechnikova, Nataliya
    National Academic Medical Science Ukraine, Ukraine.
    Islam, Mohammad Mirazul
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för cellbiologi. Linköpings universitet, Medicinska fakulteten. Karolinska Institute, Sweden.
    Iakymenko, Stanislav
    National Academic Medical Science Ukraine, Ukraine.
    Fagerholm, Per
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Sinnescentrum, Ögonkliniken US/LiM.
    Griffith, May
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för cellbiologi. Linköpings universitet, Medicinska fakulteten. Karolinska Institute, Sweden.
    Bioengineered Corneas Grafted as Alternatives to Human Donor Corneas in Three High-Risk Patients2015Ingår i: Clinical and Translational Science, ISSN 1752-8054, E-ISSN 1752-8062, Vol. 8, nr 5, s. 558-562Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Corneas with severe pathologies have a high risk of rejection when conventionally grafted with human donor tissues. In this early observational study, we grafted bioengineered corneal implants made from recombinant human collagen and synthetic phosphorylcholine polymer into three patients for whom donor cornea transplantation carried a high risk of transplant failure. These patients suffered from corneal ulcers and recurrent erosions preoperatively. The implants provided relief from pain and discomfort, restored corneal integrity by promoting endogenous regeneration of corneal tissues, and improved vision in two of three patients. Such implants could in the future be alternatives to donor corneas for high-risk patients, and therefore, merits further testing in a clinical trial.

  • 2.
    Islam, Mohammad Mirazul
    et al.
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för cellbiologi. Linköpings universitet, Medicinska fakulteten. Harvard Medical School, Boston, MA USA.
    Buznyk, Oleksiy
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten. Filatov Institute of Eye Diseases and Tissue Therapy of the NAMS of Ukraine, Odessa, Ukraine.
    Reddy, Jagadesh C
    Tej Kohli Cornea Institute, LV Prasad Eye Institute, Hyderabad, India.
    Pasyechnikova, Nataliya
    Filatov Institute of Eye Diseases and Tissue Therapy of the NAMS of Ukraine, Odessa, Ukraine.
    Alarcon, Emilio I
    Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, ON Canada.
    Hayes, Sally
    School of Optometry and Vision Sciences College of Biomedical and Life Sciences, Cardiff University, Cardiff, UK; 7Cardiff Institute for Tissue Engineering and Repair (CITER), Cardiff University, Cardiff, UK.
    Lewis, Philip
    School of Optometry and Vision Sciences College of Biomedical and Life Sciences, Cardiff University, Cardiff, UK; 7Cardiff Institute for Tissue Engineering and Repair (CITER), Cardiff University, Cardiff, UK.
    Fagerholm, Per
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för neuro- och inflammationsvetenskap. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Sinnescentrum, Ögonkliniken US/LiM.
    He, Chaoliang
    Key Laboratory of Polymer Eco-materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China.
    Iakymenko, Stanislav
    Filatov Institute of Eye Diseases and Tissue Therapy of the NAMS of Ukraine, Odessa, Ukraine.
    Liu, Wenguang
    School of Materials Science and Engineering, Tianjin University, Tianjin, China.
    Meek, Keith M
    School of Optometry and Vision Sciences College of Biomedical and Life Sciences, Cardiff University, Cardiff, UK; 7Cardiff Institute for Tissue Engineering and Repair (CITER), Cardiff University, Cardiff, UK.
    Sangwan, Virender S
    Tej Kohli Cornea Institute, LV Prasad Eye Institute, Hyderabad, India.
    Griffith, May
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för cellbiologi. Linköpings universitet, Medicinska fakulteten. University of Montreal, Montreal, Canada.
    Biomaterials-enabled cornea regeneration in patients at high risk for rejection of donor tissue transplantation2018Ingår i: NPJ Regenerative medicine, ISSN 2057-3995, Vol. 3, artikel-id 2Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The severe worldwide shortage of donor organs, and severe pathologies placing patients at high risk for rejecting conventional cornea transplantation, have left many corneal blind patients untreated. Following successful pre-clinical evaluation in mini-pigs, we tested a biomaterials-enabled pro-regeneration strategy to restore corneal integrity in an open-label observational study of six patients. Cell-free corneal implants comprising recombinant human collagen and phosphorylcholine were grafted by anterior lamellar keratoplasty into corneas of unilaterally blind patients diagnosed at high-risk for rejecting donor allografts. They were followed-up for a mean of 24 months. Patients with acute disease (ulceration) were relieved of pain and discomfort within 1-2 weeks post-operation. Patients with scarred or ulcerated corneas from severe infection showed better vision improvement, followed by corneas with burns. Corneas with immune or degenerative conditions transplanted for symptom relief only showed no vision improvement overall. However, grafting promoted nerve regeneration as observed by improved touch sensitivity to near normal levels in all patients tested, even for those with little/no sensitivity before treatment. Overall, three out of six patients showed significant vision improvement. Others were sufficiently stabilized to allow follow-on surgery to restore vision. Grafting outcomes in mini-pig corneas were superior to those in human subjects, emphasizing that animal models are only predictive for patients with non-severely pathological corneas; however, for establishing parameters such as stable corneal tissue and nerve regeneration, our pig model is satisfactory. While further testing is merited, we have nevertheless shown that cell-free implants are potentially safe, efficacious options for treating high-risk patients.

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