PMID- 23154286 OWN - NLM STAT- MEDLINE DCOM- 20140102 LR - 20211021 IS - 2150-5608 (Electronic) IS - 2150-5594 (Print) IS - 2150-5594 (Linking) VI - 3 IP - 7 DP - 2012 Nov 15 TI - Pathology in euthermic bats with white nose syndrome suggests a natural manifestation of immune reconstitution inflammatory syndrome. PG - 583-8 LID - 10.4161/viru.22330 [doi] AB - White nose syndrome, caused by Geomyces destructans, has killed more than 5 million cave hibernating bats in eastern North America. During hibernation, the lack of inflammatory cell recruitment at the site of fungal infection and erosion is consistent with a temperature-induced inhibition of immune cell trafficking. This immune suppression allows G. destructans to colonize and erode the skin of wings, ears and muzzle of bat hosts unchecked. Yet, paradoxically, within weeks of emergence from hibernation an intense neutrophilic inflammatory response to G. destructans is generated, causing severe pathology that can contribute to death. We hypothesize that the sudden reversal of immune suppression in bats upon the return to euthermia leads to a form of immune reconstitution inflammatory syndrome (IRIS). IRIS was first described in HIV-infected humans with low helper T lymphocyte counts and bacterial or fungal opportunistic infections. IRIS is a paradoxical and rapid worsening of symptoms in immune compromised humans upon restoration of immunity in the face of an ongoing infectious process. In humans with HIV, the restoration of adaptive immunity following suppression of HIV replication with anti-retroviral therapy (ART) can trigger severe immune-mediated tissue damage that can result in death. We propose that the sudden restoration of immune responses in bats infected with G. destructans results in an IRIS-like dysregulated immune response that causes the post-emergent pathology. FAU - Meteyer, Carol U AU - Meteyer CU AD - National Wildlife Health Center, US Geological Survey, Madison, WI, USA. FAU - Barber, Daniel AU - Barber D FAU - Mandl, Judith N AU - Mandl JN LA - eng PT - Journal Article PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20121115 PL - United States TA - Virulence JT - Virulence JID - 101531386 SB - IM MH - Animals MH - Chiroptera MH - Immune Reconstitution Inflammatory Syndrome/pathology/*veterinary MH - Mycoses/pathology/*veterinary MH - North America MH - Nose/*pathology PMC - PMC3545935 OTO - NOTNLM OT - Geomyces destructans OT - Myotis lucifugus OT - cave-hibernating bats OT - hibernation-induced immune suppression OT - immune cell trafficking OT - immune reconstitution inflammatory syndrome (IRIS) OT - white nose syndrome EDAT- 2012/11/17 06:00 MHDA- 2014/01/03 06:00 PMCR- 2012/11/15 CRDT- 2012/11/17 06:00 PHST- 2012/11/17 06:00 [entrez] PHST- 2012/11/17 06:00 [pubmed] PHST- 2014/01/03 06:00 [medline] PHST- 2012/11/15 00:00 [pmc-release] AID - 22330 [pii] AID - 2011VIRULENCE0119R [pii] AID - 10.4161/viru.22330 [doi] PST - ppublish SO - Virulence. 2012 Nov 15;3(7):583-8. doi: 10.4161/viru.22330. Epub 2012 Nov 15.