PMID- 28191680 OWN - NLM STAT- MEDLINE DCOM- 20180720 LR - 20180816 IS - 1600-0625 (Electronic) IS - 0906-6705 (Linking) VI - 26 IP - 11 DP - 2017 Nov TI - Friends or Foes? Host defense (antimicrobial) peptides and proteins in human skin diseases. PG - 989-998 LID - 10.1111/exd.13314 [doi] AB - Host defense peptides/proteins (HDPs), also known as antimicrobial peptides/proteins (AMPs), are key molecules in the cutaneous innate immune system. AMPs/HDPs historically exhibit broad-spectrum killing activity against bacteria, enveloped viruses, fungi and several parasites. Recently, AMPs/HDPs were shown to have important biological functions, including inducing cell proliferation, migration and differentiation; regulating inflammatory responses; controlling the production of various cytokines/chemokines; promoting wound healing; and improving skin barrier function. Despite the fact that AMPs/HDPs protect our body, several studies have hypothesized that these molecules actively contribute to the pathogenesis of various skin diseases. For example, AMPs/HDPs play crucial roles in the pathological processes of psoriasis, atopic dermatitis, rosacea, acne vulgaris, systemic lupus erythematosus and systemic sclerosis. Thus, AMPs/HDPs may be a double-edged sword, promoting cutaneous immunity while simultaneously initiating the pathogenesis of some skin disorders. This review will describe the most common skin-derived AMPs/HDPs (defensins, cathelicidins, S100 proteins, ribonucleases and dermcidin) and discuss the biology and both the positive and negative aspects of these AMPs/HDPs in skin inflammatory/infectious diseases. Understanding the regulation, functions and mechanisms of AMPs/HDPs may offer new therapeutic opportunities in the treatment of various skin disorders. CI - (c) 2017 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd. FAU - Niyonsaba, Francois AU - Niyonsaba F AUID- ORCID: 0000-0002-0588-8315 AD - Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan. AD - Faculty of International Liberal Arts, Juntendo University, Tokyo, Japan. FAU - Kiatsurayanon, Chanisa AU - Kiatsurayanon C AD - Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan. AD - Department of Dermatology and Allergology, Juntendo University Graduate School of Medicine, Tokyo, Japan. AD - Department of Medical Services, Institute of Dermatology, Ministry of Public Health, Bangkok, Thailand. FAU - Chieosilapatham, Panjit AU - Chieosilapatham P AD - Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan. AD - Department of Dermatology and Allergology, Juntendo University Graduate School of Medicine, Tokyo, Japan. FAU - Ogawa, Hideoki AU - Ogawa H AD - Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20170427 PL - Denmark TA - Exp Dermatol JT - Experimental dermatology JID - 9301549 RN - 0 (Antimicrobial Cationic Peptides) RN - 0 (Cathelicidins) RN - 0 (Defensins) RN - 0 (Peptides) RN - 0 (S100 Proteins) RN - 0 (dermcidin) RN - EC 3.1.- (Ribonucleases) RN - EC 3.1.27.- (Ribonuclease 7) SB - IM MH - Antimicrobial Cationic Peptides/*immunology/*metabolism MH - Cathelicidins/immunology/metabolism MH - Defensins/immunology/metabolism MH - Humans MH - Immunity, Innate MH - Peptides/immunology/metabolism MH - Ribonucleases/immunology/metabolism MH - S100 Proteins/immunology/metabolism MH - Skin/*immunology/*metabolism MH - Skin Diseases/*metabolism MH - Skin Physiological Phenomena MH - Wound Healing OTO - NOTNLM OT - antimicrobial agent OT - infection OT - inflammation OT - skin immunity OT - therapeutic agent EDAT- 2017/02/14 06:00 MHDA- 2018/07/22 06:00 CRDT- 2017/02/14 06:00 PHST- 2017/02/08 00:00 [accepted] PHST- 2017/02/14 06:00 [pubmed] PHST- 2018/07/22 06:00 [medline] PHST- 2017/02/14 06:00 [entrez] AID - 10.1111/exd.13314 [doi] PST - ppublish SO - Exp Dermatol. 2017 Nov;26(11):989-998. doi: 10.1111/exd.13314. Epub 2017 Apr 27.