Applied Bimatics - An Informatics & eHealth Blog

I am a clinician with a passion for informatics. This blog is about my eHealth journey exploring interoperability in Electronic Medical Records (EMR/EHR), Patient Safety, Pharmacovigilance, Data Analytics, Clinical Research and Bioinformatics in a clinical context. Comparing Canadian, Indian and Middle Eastern healthcare systems and services. Join our open facebook group here:


Proteinases play an important role in conditions associated with inflammatory desquamation of the skin like psoriasis, atopic dermatitis and netherton syndrome. Proteinase inhibitors keep their activity under check. Today I read an article [1] about such an inhibitor called LEKTI (lympho-epithelial Kazal-type-related inhibitor) and the corresponding gene SPINK5, mutations of which is responsible for Netherton syndrome. Authors found that domain 6 and domain 15 inhibit 2 key serine proteinases called hK5 and hK7. They also found that domain 15 with 3 disulphide bonds (and not domain 6) also inhibit plasmin. Plasmin is important in the pathogenesis of pemphigus vulgaris which basically is an autoimmune disease [2]. Hence LEKTI domain 15 may be useful in the treatment of pemphigus vulgaris too. The relevance of the fact that drugs with sulfhydryl groups induce pemphigus with respect to the above finding can be explored.
Interested in further exploring LEKTI bioinformatically?
  1. T. Egelrud et al. hK5 and hK7, two serine proteinases abundant in human skin, are inhibited by LEKTI domain 6. British Journal of Dermatology 2005;153:1200-1203.

  2. Naito K, Morioka S, Nakajima S, Ogawa H. Proteinase inhibitors block formation of pemphigus acantholysis in experiments models of neonatal mice and skin explants: effects of synthetic and plasma proteinase inhibitors on pemphigus acantholysis. J Invest Dermatol 1989; 93: 173-7.

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About Me

As a Dermatologist and Informatician my research mainly involves application of bioinformatics techniques and tools in dermatological conditions. However my research interests are varied and I have publications in areas ranging from artificial intelligence, sequence analysis, systems biology, ontology development, microarray analysis, immunology, computational biology and clinical dermatology. I am also interested in eHealth, Health Informatics and Health Policy.


Bell Raj Eapen
Hamilton, ON