Tinnitus is associated with increased extracellular matrix density in the auditory cortex of Mongolian gerbils
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| Názov: | Tinnitus is associated with increased extracellular matrix density in the auditory cortex of Mongolian gerbils |
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| Autori: | Tziridis, Konstantin, Maul, Antonia, Rasheed, Jwan, Krauss, Patrick, Schilling, Achim, Schulze, Holger |
| Zdroj: | BMC Neurosci BMC Neuroscience, Vol 25, Iss 1, Pp 1-12 (2024) |
| Informácie o vydavateľovi: | Springer Science and Business Media LLC, 2024. |
| Rok vydania: | 2024 |
| Predmety: | Auditory Cortex/physiopathology [MeSH], Extracellular Matrix/pathology [MeSH], Auditory Cortex/pathology [MeSH], Tinnitus/physiopathology [MeSH], Animal model, Acoustic Stimulation [MeSH], Extracellular Matrix/metabolism [MeSH], Gerbillinae [MeSH], Neuronal Plasticity/physiology [MeSH], Animals [MeSH], Tinnitus, Male [MeSH], Extracellular matrix, Hearing Loss, Noise-Induced/pathology [MeSH], Research, Tinnitus/pathology [MeSH], Auditory cortex, Disease Models, Animal [MeSH], Rodents, Hearing Loss, Noise-Induced/physiopathology [MeSH], Neurophysiology and neuropsychology, Auditory Cortex, Male, Neuronal Plasticity, QP351-495, Neurosciences. Biological psychiatry. Neuropsychiatry, Extracellular Matrix, Disease Models, Animal, Hearing Loss, Noise-Induced, Acoustic Stimulation, Animals, Gerbillinae, RC321-571 |
| Popis: | Most scientist agree that subjective tinnitus is the pathological result of an interaction of damage to the peripheral auditory system and central neuroplastic adaptations. Here we investigate such tinnitus related adaptations in the primary auditory cortex (AC) 7 and 13 days after noise trauma induction of tinnitus by quantifying the density of the extracellular matrix (ECM) in the AC of Mongolian gerbils (Meriones unguiculatus). The ECM density has been shown to be relevant for neuroplastic processes and synaptic stability within the cortex. We utilized a mild monaural acoustic noise trauma in overall 22 gerbils to induce tinnitus and a sham exposure in 16 control (C) animals. Tinnitus was assessed by a behavioral response paradigm. Animals were separated for a presence (T) or absence (NT) of a tinnitus percept by a behavioral task. The ECM density 7 and 13 days after trauma was quantified using immunofluorescence luminance of Wisteria floribunda lectin-fluoresceine-5-isothiocyanate (WFA-FITC) on histological slices of the primary AC, relative to the non-auditory brainstem as a reference area. At both timepoints, we found that the WFA-FITC luminance of the AC of NT animals was not significantly different from that of C animals. However, we found a significant increase of luminance in T animals’ ACs compared to NT or C animals’ cortices. This effect was found exclusively on the AC side contralateral to the trauma ear. These results point to a hemisphere specific process of stabilization of synaptic connections in primary AC, which may be involved in the chronic manifestation of tinnitus. |
| Druh dokumentu: | Article Other literature type |
| ISSN: | 1471-2202 |
| DOI: | 10.21203/rs.3.rs-4760934/v1 |
| DOI: | 10.1186/s12868-024-00904-w |
| Prístupová URL adresa: | https://pubmed.ncbi.nlm.nih.gov/39420272 https://doaj.org/article/55a65baddf774daa88c6e120754321af https://repository.publisso.de/resource/frl:6498904 |
| Rights: | CC BY |
| Prístupové číslo: | edsair.doi.dedup.....1c2d8a55c52f13ef5938d941dd5505b0 |
| Databáza: | OpenAIRE |
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Nájsť tento článok vo Web of Science | Abstrakt: | Most scientist agree that subjective tinnitus is the pathological result of an interaction of damage to the peripheral auditory system and central neuroplastic adaptations. Here we investigate such tinnitus related adaptations in the primary auditory cortex (AC) 7 and 13 days after noise trauma induction of tinnitus by quantifying the density of the extracellular matrix (ECM) in the AC of Mongolian gerbils (Meriones unguiculatus). The ECM density has been shown to be relevant for neuroplastic processes and synaptic stability within the cortex. We utilized a mild monaural acoustic noise trauma in overall 22 gerbils to induce tinnitus and a sham exposure in 16 control (C) animals. Tinnitus was assessed by a behavioral response paradigm. Animals were separated for a presence (T) or absence (NT) of a tinnitus percept by a behavioral task. The ECM density 7 and 13 days after trauma was quantified using immunofluorescence luminance of Wisteria floribunda lectin-fluoresceine-5-isothiocyanate (WFA-FITC) on histological slices of the primary AC, relative to the non-auditory brainstem as a reference area. At both timepoints, we found that the WFA-FITC luminance of the AC of NT animals was not significantly different from that of C animals. However, we found a significant increase of luminance in T animals’ ACs compared to NT or C animals’ cortices. This effect was found exclusively on the AC side contralateral to the trauma ear. These results point to a hemisphere specific process of stabilization of synaptic connections in primary AC, which may be involved in the chronic manifestation of tinnitus. |
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| ISSN: | 14712202 |
| DOI: | 10.21203/rs.3.rs-4760934/v1 |