Yin X, He T, Chen R, Cui H, Li G. Impact of neurotrophic factors combination therapy on retinitis pigmentosa.
J Int Med Res 2020. [PMCID:
PMC7711238 DOI:
10.1177/0300060520967833]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Objective
We aimed to determine the location of neurotrophic receptors tropomyosin
receptor kinase (Trk)B, TrkC, and ciliary neurotrophic factor receptor
(CNTFR)α in the retina of retinal degeneration (rd) mice
and to explore the dynamic changes of B-cell lymphoma-2 (Bcl-2),
Bcl-2-associated X-protein (Bax), and microtubule-associated protein light
chain 3 (LC3) expression and ultrastructure in the retina of
rd mice intravitreally injected with neurotrophic
factors.
Methods
Rd mice aged 2 and 3 weeks post-natally (PN) received
intravitreal injections of neurotrophic factors. Two weeks later, their
retinas were harvested for the detection of Bax, Bcl-2, and LC3 mRNA and
protein expression.
Results
TrkB and TrkC expression levels were lower at 3 weeks PN compared with 0, 1,
and 2 weeks PN, but CNTFRα expression was still detected in certain layers.
The three receptors were expressed in different retinal layers at the same
timepoint. Bax expression was downregulated in, rhBDNF + rhCNTF,
rhBDNF + rhNT-3, groups 2 weeks after intravitreal injection; Bcl-2
expression was upregulated in the rhBDNF + rhCNTF + rhNT-3 group at PN-4w;
and LC3 expression was upregulated in rhBDNF + rhCNTF + rhNT-3 groups.
Conclusions
The combined use of neurotrophic factors had a more significant effect on
Bax, Bcl-2, and LC3 expression than the same factors used alone.
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