PMID- 30947188 OWN - NLM STAT- MEDLINE DCOM- 20190809 LR - 20190809 IS - 1423-0267 (Electronic) IS - 0030-3755 (Linking) VI - 242 IP - 2 DP - 2019 TI - Premacular Cell Proliferation Profiles in Tangential Traction Vitreo-Maculopathies Suggest a Key Role for Hyalocytes. PG - 106-112 LID - 10.1159/000495853 [doi] AB - PURPOSE: To compare immunocytochemical and ultrastructural features of premacular tissue surgically removed from eyes with tangential traction vitreo-maculopathies. METHODS: By spectral-domain optical coherence tomography (SD-OCT), premacular tissue was differentiated into premacular proliferation and premacular membrane (PMM). Specimens were harvested during vitrectomy from 10 eyes with macular pucker, lamellar macular hole (LMH) and full-thickness macular hole, and prepared for immunocytochemistry and transmission electron microscopy. RESULTS: All specimens showed positive autofluorescence consistent with the yellow colour of peeled tissue. Glial cells were predominantly positive in premacular proliferation. Hyalocytes were the main cell type in PMM. Electron microscopy revealed densely packed premacular glial cells neighbouring hyalocytes and vitreous collagen strands. Myofibroblasts with features indicative of contractile properties were found in PMM, exclusively. Cell composition of premacular proliferation was free of contractile elements. CONCLUSION: All three types of vitreo-maculopathy have similar cell constituents in their premacular tissue. Cell population of premacular proliferation is not unique for LMHs. Corresponding to SD-OCT, electron microscopy demonstrates hyalocytes and vitreous collagen in PMMs both directly adjacent to the cellular complex of premacular proliferation. Study results point to the vitreous as one important pathogenic player potentially driving the degenerative cellular process at the vitreoretinal interface in tangential traction vitreo-maculopathies. CI - (c) 2019 S. Karger AG, Basel. FAU - Schumann, Ricarda G AU - Schumann RG AD - Department of Ophthalmology, Ludwig Maximilian University, Munich, Germany. FAU - Hagenau, Felix AU - Hagenau F AD - Department of Ophthalmology, Ludwig Maximilian University, Munich, Germany. FAU - Guenther, Stefanie R AU - Guenther SR AD - Department of Ophthalmology, Ludwig Maximilian University, Munich, Germany. FAU - Wolf, Armin AU - Wolf A AD - Department of Ophthalmology, Ludwig Maximilian University, Munich, Germany. FAU - Priglinger, Siegfried G AU - Priglinger SG AD - Department of Ophthalmology, Ludwig Maximilian University, Munich, Germany. FAU - Vogt, Denise AU - Vogt D AD - Department of Ophthalmology, Ludwig Maximilian University, Munich, Germany, denise.vogt@med.uni-muenchen.de. LA - eng PT - Journal Article DEP - 20190404 PL - Switzerland TA - Ophthalmologica JT - Ophthalmologica. Journal international d'ophtalmologie. International journal of ophthalmology. Zeitschrift fur Augenheilkunde JID - 0054655 SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Cell Proliferation MH - Epiretinal Membrane/*pathology MH - Female MH - Follow-Up Studies MH - Humans MH - Immunohistochemistry MH - Macula Lutea/*pathology MH - Male MH - Microscopy, Electron, Transmission MH - Middle Aged MH - Retrospective Studies MH - Tomography, Optical Coherence/*methods MH - Visual Acuity MH - Vitreoretinopathy, Proliferative/*pathology MH - Vitreous Body/*pathology OTO - NOTNLM OT - Full-thickness macular hole OT - Hyalocytes OT - Immunocytochemistry OT - Lamellar macular hole OT - Premacular membrane OT - Premacular proliferation OT - Tangential traction vitreo-maculopathy OT - Transmission electron microscopy OT - Vitreoschisis EDAT- 2019/04/05 06:00 MHDA- 2019/08/10 06:00 CRDT- 2019/04/05 06:00 PHST- 2018/07/02 00:00 [received] PHST- 2018/11/27 00:00 [accepted] PHST- 2019/04/05 06:00 [pubmed] PHST- 2019/08/10 06:00 [medline] PHST- 2019/04/05 06:00 [entrez] AID - 000495853 [pii] AID - 10.1159/000495853 [doi] PST - ppublish SO - Ophthalmologica. 2019;242(2):106-112. doi: 10.1159/000495853. Epub 2019 Apr 4.