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Dysregulated proline metabolism contributes to retinal fibrosis in neovascular AMD: Therapeutic potential of prolyl-4-hydroxylase inhibition

Subretinal fibrosis causes irreversible vision loss in neovascular age-related macular degeneration (AMD). This study shows that proline metabolism, particularly P4HA1-mediated proline hydroxylation, is activated in JR5558 mice and human AMD tissues. Diethyl pythiDC reduced collagen turnover and fibrovascular lesion expansion, with potential added benefit when combined with aflibercept.

Generation Is Compression: Zero-Shot Video Coding via Stochastic Rectified Flow

arXiv:2603.26571v2 Announce Type: replace-cross Abstract: Recent advances in generative modeling have enabled perceptual video compression at ultra-low bitrates, yet existing methods predominantly treat the generative model as a refinement or reconstruction module attached to a separately designed codec backbone. We propose \emph{Generative Video Codebook Codec} (GVCC), a zero-shot framework that turns a pretrained video generative model into the codec itself: the transmitted bitstream directly specifies the generative decoding trajectory, with no retraining required. To enable this, we convert the deterministic rectified-flow ODE of modern video foundation models into an equivalent SDE at inference time, unlocking per-step stochastic injection points for codebook-driven compression. Building on this unified backbone, we instantiate three complementary conditioning strategies -- \emph{Image-to-Video} (I2V) with autoregressive GOP chaining, tail latent residual correction, and adaptive atom allocation, \emph{Text-to-Video} (T2V) operating at near-zero side information as a pure generative prior, and \emph{First-Last-Frame-to-Video} (FLF2V) with boundary-sharing GOP chaining for dual-anchor temporal control. Together, these variants span a principled trade-off space between spatial fidelity, temporal coherence, and compression efficiency. Experiments on standard benchmarks show that GVCC achieves high-quality reconstruction below 0.002\,bpp while supporting flexible bitrate control through a single hyperparameter.
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