Publications by authors named "Pengsen Wu"

Dysthyroid optic neuropathy (DON) represents a severe ocular complication in thyroid eye disease (TED) that can lead to vision loss. Although surgical decompression is a well-established treatment modality, the optimal decompression area remains controversial in orbital decompression surgery. This study aims to develop and validate a finite element analysis (FEA) model of DON to compare the biomechanical behavior between patients undergoing conventional or augmented orbital decompression surgery, with potential clinical implications for surgical planning.

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Purpose: To assess differences in corneal morphology and biomechanics between patients with myopathic thyroid eye disease (TED) and normal controls (NCs), as well as to evaluate these changes following radiotherapy.

Methods: Patients with active myopathic TED and age-, sex-, and spherical equivalent-matched NCs were enrolled in this study. All patients underwent radiotherapy and were followed up for 6 months post-treatment.

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Amyloidosis involving the lacrimal sac is extremely rare. In this study, we demonstrated a rare case of localized light chain amyloidosis in the lacrimal sac region. The lacrimal sac lesion presented as infiltrative with bony erosion.

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Kabuki syndrome (KS) is a rare congenital disorder with distinctive characteristics. Herein, we describe a KS patient carrying a novel mutation in the gene, c.11785C > T (p.

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Article Synopsis
  • The study investigates the expression and role of SOX9 in orbital fibroblasts from patients with thyroid eye disease (TED) compared to healthy controls.
  • Results reveal that SOX9 is significantly elevated in TED orbital fibroblasts and influences key cellular activities such as contraction, migration, and proliferation via the MAPK/ERK1/2 signaling pathway.
  • The findings suggest that targeting SOX9 and its downstream effect on the epidermal growth factor receptor (EGFR) could provide new therapeutic strategies for treating orbital fibrosis in TED.
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  • Retinal ischemia-reperfusion (RIR) injury from high intraocular pressure (IOP) leads to retinal ganglion cell (RGC) death, which can cause blindness, but the mechanisms behind this process are not fully understood and effective treatments are lacking.
  • Melatonin (MT) shows potential as a neuroprotective agent by reducing RGC death and ameliorating retinal damage in murine models, primarily by inhibiting ferroptosis, a form of programmed cell death associated with organ injury.
  • The study suggests that MT's protective effects involve downregulating p53, a key regulator that promotes ferroptosis, indicating that MT may serve as a promising therapeutic option for retinal neuroprotection.
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  • Lutein (LU) is a carotenoid that may help reduce fibrosis, inflammation, and oxidative stress, which are linked to thyroid-associated ophthalmopathy (TAO).
  • In vitro studies showed that LU pre-treatment of orbital fibroblasts (OFs) from TAO patients lowered the expression of genes and proteins related to fibrosis and inflammation, leading to decreased migration of these cells.
  • RNA sequencing indicated that the protective effects of LU might be mediated through the ERK/AP-1 pathway, suggesting its potential as a therapeutic option for managing TAO.
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  • Previous research on ptosis recurrence after surgical correction has largely overlooked the role of refractive errors, prompting this study to explore their potential link in pediatric patients with congenital ptosis.
  • The study analyzed data from 85 patients who underwent frontalis muscle flap suspension for simple congenital ptosis, focusing on postoperative eyelid height and refractive changes over time.
  • The findings indicated that factors like postoperative cylindrical diopter and laterality were linked to recurrence, while preoperative and postoperative spherical metrics showed no significant correlation, suggesting improvements in refractive correction may help reduce recurrence rates in ptosis cases.
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Purpose: Biallelic MAB21L1 variants have been reported to cause autosomal recessive cerebellar, ocular, craniofacial, and genital syndrome (COFG), whereas only five heterozygous pathogenic variants have been suspected to cause autosomal dominant (AD) microphthalmia and aniridia in eight families. This study aimed to report an AD ocular syndrome (blepharophimosis plus anterior segment and macular dysgenesis [BAMD]) syndrome based on clinical and genetic findings from patients with monoallelic MAB21L1 pathogenic variants in our cohort and reported cases.

Methods: Potential pathogenic variants in MAB21L1 were detected from a large in-house exome sequencing dataset.

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  • Early detection of visual impairment in young children is often overlooked due to their limited ability to cooperate with standard vision tests.
  • The Apollo Infant Sight (AIS) is a mobile health system that uses smartphone technology to analyze children's gazing behaviors and facial features to detect 16 different ophthalmic disorders.
  • In tests, AIS demonstrated strong performance in identifying visual impairment, achieving high accuracy both in clinical settings and for at-home use by untrained caregivers.
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Purpose: To investigate the long-term outcomes of intraorbital self-inflating hydrogel expander implantation with optic nerve transection in children with congenital microphthalmia.

Methods: The medical records of unilaterally blind microphthalmic pediatric patients undergoing intraconal hydrogel expander implantation with optic nerve transection were reviewed retrospectively. For each patient, the microphthalmic eye was preserved.

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Background: Corneal neovascularization (CNV) caused by alkali burn injury is tightly associated with an inflammatory reaction and can lead to vision loss. Melatonin is involved in anti-inflammation and anti-angiogenesis, but its role in CNV has not yet been investigated.

Methods: We induced CNV using sodium hydroxide (NaOH) and compared the reactions of vehicle control and melatonin-treated male C57BL/6 mice at 7 and 14 days following the corneal burn.

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Orbital fibrosis is a hallmark of tissue remodeling in thyroid-associated ophthalmopathy (TAO). Previous studies have shown that interleukin (IL)-11 plays a pivotal profibrotic role in various inflammatory and autoimmune diseases. However, the expression pattern of IL-11 in patients with TAO and whether IL-11 is mechanistically linked with pathological fibrosis remains unknown.

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Open reduction followed by internal fixation (ORIF) has been regarded as the most effective technique for surgical repair of zygomaticomaxillary complex (ZMC) fractures. However, the ideal internal fixation method to achieve stable reduction remains controversial. This research aims to assess and compare the stability of the 2- and 3-point screw-plate fixation methods using finite element method (FEM).

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