Publications by authors named "Hadrian K"

Macrophages play a pivotal role in the innate immune response. While their most characteristic function is phagocytosis, it is important not to solely characterize macrophages by this activity. Their crucial roles in body development, homeostasis, repair, and immune responses against pathogens necessitate a broader understanding.

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  • - Toxic milk (txJ) is a genetic mutation in the Atp7b gene found in a specific strain of mice, leading to symptoms similar to human Wilson's disease, and the study investigates the effects of this mutation on organ health over time.
  • - Using advanced spectroscopy techniques, researchers found elevated copper levels in several organs (like the liver and brain) of txJ mice, along with significant alterations in lipid content and protein structure, which suggests underlying damage.
  • - The findings indicate that txJ mice serve as an effective model for studying Wilson's disease, highlighting how copper accumulation can lead to tissue injury and neurodegeneration.
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Wilson's disease (WD) is inherited in an autosomal recessive manner and is caused by pathogenic variants of the gene, which are responsible for impaired copper transport in the cell, inhibition of copper binding to apoceruloplasmin, and biliary excretion. This leads to the accumulation of copper in the tissues. Copper accumulation in the CNS leads to the neurological and psychiatric symptoms of WD.

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Purpose: To compare safety and efficacy of isolated and combined UV-light corneal crosslinking (CXL) and fine-needle diathermy (FND) to regress pathological corneal vessels in vivo.

Methods: Mice with inflamed and pathologically vascularized corneas received CXL or FND as monotherapy or a combination of both treatments. Corneal pathological blood and lymphatic vessels, immune cells and the morphology of anterior segment structures were evaluated.

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The cornea, essential for vision, is normally avascular, transparent, and immune-privileged. However, injuries or infections can break this privilege, allowing blood and lymphatic vessels to invade, potentially impairing vision and causing immune responses. This review explores the complex role of corneal lymphangiogenesis in health and diseases.

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  • The limbus, the area connecting the cornea and conjunctiva, may protect against abnormal blood vessel growth in the cornea, but how it does this isn't fully understood.
  • Researchers studied ABCB5, a marker for limbal epithelial stem cells (LESCs), to explore its role in corneal blood vessel development and found it has different effects in young and adult mice.
  • The study revealed that ABCB5+ cells can inhibit blood vessel growth during development but promote it during inflammation in adults, suggesting a complex role that could be important for therapies aimed at preventing blindness.
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  • NFAT5, an osmosensitive transcription factor, plays a significant role in regulating salt and water balance in the cornea, impacting transparency and susceptibility to blindness.
  • In healthy corneas, NFAT5 is primarily found in fibroblasts, but its expression increases in corneal macrophages after perforating injury, contributing to fluid balance.
  • The study reveals that NFAT5 normally suppresses corneal edema resorption, suggesting that targeting this factor could offer new treatment options for corneal edema and related blindness.
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The cornea is frequently exposed to ultraviolet (UV) radiation and absorbs a portion of this radiation. UVB in particular is absorbed by the cornea and will principally damage the topmost layer of the cornea, the epithelium. Epidemiological research shows that the UV damage of DNA is a contributing factor to corneal diseases such as pterygium.

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  • Recent research shows that lymphatic vessels, once thought absent in the eye, play a significant role in various eye diseases.
  • The review explores how these vessels contribute to conditions like dry eye, corneal graft rejection, and tumors, as well as the underlying molecular mechanisms involved.
  • It also highlights new therapeutic approaches based on targeting lymphangiogenesis, with promising initial results from clinical trials aimed at improving transplant survival and managing glaucoma.
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Purpose: Pathologic conditions in the cornea, such as transplant rejection or trauma, can lead to corneal neovascularization, creating a high-risk environment that may compromise subsequent transplantation. This study aimed to evaluate the impact of different types of corneal injury on hemangiogenesis (HA), lymphangiogenesis (LA) and immune cell pattern in the cornea.

Methods: We used five different corneal injury models, namely, incision injury, alkali burn, suture placement, and low-risk keratoplasty, as well as high-risk keratoplasty and naïve corneas as control.

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Immune responses reflect a complex interplay of cellular and extracellular components which define the microenvironment of a tissue. Therefore, factors that locally influence the microenvironment and re-establish tolerance might be beneficial to mitigate immune-mediated reactions, including the rejection of a transplant. In this study, we demonstrate that pre-incubation of donor tissue with the immune modulator soluble CD83 (sCD83) significantly improves graft survival using a high-risk corneal transplantation model.

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Macrophages are critical mediators of tissue vascularization both in health and disease. In multiple tissues, macrophages have been identified as important regulators of both blood and lymphatic vessel growth, specifically following tissue injury and in pathological inflammatory responses. In development, macrophages have also been implicated in limiting vascular growth.

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Wilson's disease (WD) is a rare genetic disorder inherited as an autosomal recessive trait. The signs and symptoms of this disease are related to dysfunctional ATP7B protein which leads to copper accumulation and cellular damage. The organs that are most commonly affected by WD are the liver and brain.

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Evidence of an age-related increase of β-synuclein (SNCB) in several parts of the visual system including the retina has been reported. SNCB is thought to function as an antagonist of α-synuclein in neurodegenerative diseases, but the exact role of SNCB remains unclear. The presented work studies two different aspects of the onset and role of SNCB in the retinal pigment epithelium (RPE).

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In the retinal pigment epithelium (RPE) several factors within the macular compared to peripheral regions cause differences in physiological aging. The molecular mechanisms during aging in the context of topography are not well known. The proteome of RPE of different aged macular-bearing primates Callithrix jacchus was thus analysed with ion mobility mass spectrometry.

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