Long-term changes in morphological and functional parameters of the optic nerve in patients with various genetic variants of hereditary optic neuropathies
Leber's hereditary optic neuropathy (LHON) and autosomal recessive optic neuropathy (ARON) are degenerative diseases of the optic nerve caused by mutations in nuclear or mitochondrial DNA (nDNA, mtDNA). The clinical picture of these diseases is similar, but there are some differences in how the...
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| Published in: | Vestnik oftal'mologii Vol. 139; no. 6; p. 77 |
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| Main Authors: | , , , , |
| Format: | Journal Article |
| Language: | Russian |
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Russia (Federation)
2023
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| Subjects: | |
| ISSN: | 0042-465X |
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| Abstract | Leber's hereditary optic neuropathy (LHON) and autosomal recessive optic neuropathy (ARON) are degenerative diseases of the optic nerve caused by mutations in nuclear or mitochondrial DNA (nDNA, mtDNA). The clinical picture of these diseases is similar, but there are some differences in how the visual functions change in patients with different molecular genetic variants of hereditary optic neuropathies (HON).
This study evaluates the long-term changes in morphological and functional parameters in patients with different genetic variants of HON.
The study included 84 patients (165 eyes) with a genetically confirmed LHON or ARON diagnosis. The patients underwent best-corrected visual acuity (VA) test, color vision (CV) examination, computerized perimetry using the program for low vision assessment, optical coherence tomography (OCT).
Over the course of the follow-up (60 months or longer) HON patients were revealed to have higher VA in c.152A>G and m.14484T>C mutations compared to mutations m.11778G>A and m.3460G>A. The final VA 0.5 or higher in patients with c.152A>G and m.14484T>C mutations in 54 and 71% of cases, and only in 6 and 13% of cases - with m.11778G>A and m.3460G>A mutations. Direct correlation was determined between minimal VA in the first year after disease onset and the final VA (K=0.67;
<0.001). In all patients with the investigated mutations CV recovered slightly quicker than VA.
HON associated with c.152A>G and m.14484T>C mutations have better prognosis compared to LHON caused by m.11778G>A and m.3460G>A mutations. Vision recovery prognosis is worse in patients who had significant decrease of visual acuity at the disease onset. OCT findings reveal preservation of visual functions in all mutations. |
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| AbstractList | Leber's hereditary optic neuropathy (LHON) and autosomal recessive optic neuropathy (ARON) are degenerative diseases of the optic nerve caused by mutations in nuclear or mitochondrial DNA (nDNA, mtDNA). The clinical picture of these diseases is similar, but there are some differences in how the visual functions change in patients with different molecular genetic variants of hereditary optic neuropathies (HON).Leber's hereditary optic neuropathy (LHON) and autosomal recessive optic neuropathy (ARON) are degenerative diseases of the optic nerve caused by mutations in nuclear or mitochondrial DNA (nDNA, mtDNA). The clinical picture of these diseases is similar, but there are some differences in how the visual functions change in patients with different molecular genetic variants of hereditary optic neuropathies (HON).This study evaluates the long-term changes in morphological and functional parameters in patients with different genetic variants of HON.PURPOSEThis study evaluates the long-term changes in morphological and functional parameters in patients with different genetic variants of HON.The study included 84 patients (165 eyes) with a genetically confirmed LHON or ARON diagnosis. The patients underwent best-corrected visual acuity (VA) test, color vision (CV) examination, computerized perimetry using the program for low vision assessment, optical coherence tomography (OCT).MATERIAL AND METHODSThe study included 84 patients (165 eyes) with a genetically confirmed LHON or ARON diagnosis. The patients underwent best-corrected visual acuity (VA) test, color vision (CV) examination, computerized perimetry using the program for low vision assessment, optical coherence tomography (OCT).Over the course of the follow-up (60 months or longer) HON patients were revealed to have higher VA in c.152A>G and m.14484T>C mutations compared to mutations m.11778G>A and m.3460G>A. The final VA 0.5 or higher in patients with c.152A>G and m.14484T>C mutations in 54 and 71% of cases, and only in 6 and 13% of cases - with m.11778G>A and m.3460G>A mutations. Direct correlation was determined between minimal VA in the first year after disease onset and the final VA (K=0.67; p<0.001). In all patients with the investigated mutations CV recovered slightly quicker than VA.RESULTSOver the course of the follow-up (60 months or longer) HON patients were revealed to have higher VA in c.152A>G and m.14484T>C mutations compared to mutations m.11778G>A and m.3460G>A. The final VA 0.5 or higher in patients with c.152A>G and m.14484T>C mutations in 54 and 71% of cases, and only in 6 and 13% of cases - with m.11778G>A and m.3460G>A mutations. Direct correlation was determined between minimal VA in the first year after disease onset and the final VA (K=0.67; p<0.001). In all patients with the investigated mutations CV recovered slightly quicker than VA.HON associated with c.152A>G and m.14484T>C mutations have better prognosis compared to LHON caused by m.11778G>A and m.3460G>A mutations. Vision recovery prognosis is worse in patients who had significant decrease of visual acuity at the disease onset. OCT findings reveal preservation of visual functions in all mutations.CONCLUSIONHON associated with c.152A>G and m.14484T>C mutations have better prognosis compared to LHON caused by m.11778G>A and m.3460G>A mutations. Vision recovery prognosis is worse in patients who had significant decrease of visual acuity at the disease onset. OCT findings reveal preservation of visual functions in all mutations. Leber's hereditary optic neuropathy (LHON) and autosomal recessive optic neuropathy (ARON) are degenerative diseases of the optic nerve caused by mutations in nuclear or mitochondrial DNA (nDNA, mtDNA). The clinical picture of these diseases is similar, but there are some differences in how the visual functions change in patients with different molecular genetic variants of hereditary optic neuropathies (HON). This study evaluates the long-term changes in morphological and functional parameters in patients with different genetic variants of HON. The study included 84 patients (165 eyes) with a genetically confirmed LHON or ARON diagnosis. The patients underwent best-corrected visual acuity (VA) test, color vision (CV) examination, computerized perimetry using the program for low vision assessment, optical coherence tomography (OCT). Over the course of the follow-up (60 months or longer) HON patients were revealed to have higher VA in c.152A>G and m.14484T>C mutations compared to mutations m.11778G>A and m.3460G>A. The final VA 0.5 or higher in patients with c.152A>G and m.14484T>C mutations in 54 and 71% of cases, and only in 6 and 13% of cases - with m.11778G>A and m.3460G>A mutations. Direct correlation was determined between minimal VA in the first year after disease onset and the final VA (K=0.67; <0.001). In all patients with the investigated mutations CV recovered slightly quicker than VA. HON associated with c.152A>G and m.14484T>C mutations have better prognosis compared to LHON caused by m.11778G>A and m.3460G>A mutations. Vision recovery prognosis is worse in patients who had significant decrease of visual acuity at the disease onset. OCT findings reveal preservation of visual functions in all mutations. |
| Author | Krylova, T D Murakhovskaya, Yu K Sheremet, N L Tsygankova, P G Andreeva, N A |
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| Keywords | autosomal recessive optic neuropathy Leber’s hereditary optic neuropathy vision recovery mitochondrial optic neuropathies |
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| SubjectTerms | DNA, Mitochondrial - genetics Humans Mutation Optic Atrophy, Hereditary, Leber - diagnosis Optic Atrophy, Hereditary, Leber - genetics Optic Nerve Prognosis |
| Title | Long-term changes in morphological and functional parameters of the optic nerve in patients with various genetic variants of hereditary optic neuropathies |
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