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Plasminogen DeficiencyLigneous Conjunctivitis &Plasma Eye Drops
NICE Brisbane 2017Rebecca Davidson
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Serum eye drops- Severe dry eye syndrome- Non-healing corneal ulcers- Recovery post LASIK surgery- Usually autologous
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Frozen serum eye drops
Serum from a whole blood donation is fully segmented and then frozen as per a unit of FFP
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Ligneous Conjunctivitis
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Plasminogen in tears
• Plasminogen activators in tear fluid convert plasminogen into plasmin, which rapidly clears the cornea of fibrin deposits
• In the absence of plasmin activity, fibrin-rich viscous or membranous material accumulates = ligneous conjunctivitis
• The wood like appearance is cause by the drying out of the fibrin and the products of the provoked inflammatory response
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Fibrinolysis
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Plasminogen Deficiency
• Congenital, rare• 1-2 cases per million people• Autosomal recessive inheritance of homozygous
or compound heterozygous mutations in the plasminogen gene, PLG, located on chromosome 6q26
• first presentation of complications usually in the paediatric population
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Common clinical manifestations
• Ligneous conjunctivitis – 80%• Ligneous gingivitis – 80%
• Do not experience intravascular thromboembolic episodes despite severe deficiency of a key component of the fibrinolytic system
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Less common clinical manifestations• Tracheobronchial fibrin deposits impair the
ciliary system of the tracheobronchial tree and support bacterial growth – 16%
• Fibrin deposition in the ears can occur – 14%• Ligneous vaginitis – 8%• Occlusive hydrocephalus caused by fibrin
deposition in the cerebral ventricular system
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Treatment of ligneous conjunctivitisDisappointing therapies:• Hyaluronidase eye drops• Corticosteroids• Cyclosporine• Immunosuppressants• Antiviral agents• Surgical resection – often causes accelerated
recurrence of the pseudomembranes
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Treatment of ligneous conjunctivitisVariably effective therapies:Topical solutions of-Corticosteroids, heparin, fresh frozen plasma, plasminogen and immunosuppression.
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Our patient – 4 year old Miss CC
• March 2016 – chronic membranous conjunctiva
• October 2016 - ?allergic/toxic, amyloid, ligneous, pyogenic granuloma
• 7 months after various treatments for chronic membranous conjunctival inflammation her grossly thickened conjunctival tissue was surgically resected
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Histopathology of debrided membranes• Pathologist’s comment:“Features of ligneous conjunctivitis with a pyogenic granuloma. The histological and clinical features are most suggestive of ligneous conjunctivitis associated with plasminogen deficiency and plasminogen gene mutations.”
• “This condition usually manifests in children. There have been reports of successful treatment with fresh frozen plasma.”
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• This report lead the treating ophthalmologist to investigate the child’s plasminogen activity
• ? therapeutic eye drops for topical replacement of plasminogen
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Plasminogen activity
Plasminogen level
Reference Range
Miss CC 0.14, 0.18 0.75-1.50 U/mL
Mother 0.72 0.75-1.50 U/mL
Father 0.52 0.75-1.50 U/mL
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Plasma eye drops
• Plasma from her parents was considered unsuitable as both were found to have slightly low plasminogen levels
• A screened donor was considered the better option
• With input from Monash Health Paediatric Haematologists, the ARCBS TMS and the ARCBS product preparation team an appropriate donation of apheresis, group matched, CMV negative plasma was collected.
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Frozen plasma eye drops
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References
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Marks DC1, Fisher J2, Mondy P2, Segatchian J3, Dennington PM2. Serum eye drop preparation in Australia: Current manufacturing practice. Transfus Apher Sci 2015;53(1):92-4
Magdum R, Gahlot A, Mushtaq I, Iqbal B, Arun S. Ligneous conjunctivitis: A rare case report.Trop J Med Res 2015;18:119-120
Heidemann DG, Williams GA, Hartzer M, Ohanian A, Citron ME. Treatment of ligneous conjunctivitis with topical plasmin and topical plasminogen. Cornea. 2003;22:760–762.
Watts P, Suresh P, Mezer E, et al. Effective treatment of ligneous conjunctivitis with topical plasminogen. Am J Ophthalmol. 2002;133:451–455.
Pergantou H, Likaki D, Fotopoulou M, Katsarou O, Xafaki P, Platokouki H. Management of ligneous conjunctivitis in a child with plasminogen deficiency. Eur J Pediatr. 2011;170:1333-1336.
Tabarra KF. Prevention of ligneous conjunctivitis by topical and subconjunctival fresh frozen plasma. Am J Ophthalmol. 2004;138(2):299-300.
Shuster V, Hügle B, Tefs K. Plasminogen deficiency. J Thromb Haemost. 2007;5(12):2315-2322.