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https://www.readbyqxmd.com/read/29326852/unusual-course-of-crystalline-keratopathy-in-a-patient-with-graft-versus-host-disease
#1
Başak Bostancı, Yonca Aydın Akova
We present a case of infectious crystalline keratopathy in a patient with Graft-versus-Host disease (GVHD) who developed satellite fungal keratitis. A 51-year-old man was referred for bilateral total persistent corneal epithelial defects with severe dry eye. Although persistent epithelial defect healed with medical therapy, he developed stromal keratitis with satellite lesions confirmed to be secondary to Candida albicans. After three months of antifungal treatment and debridement, improvement of the infiltrates was obtained...
December 2017: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/29324584/maternal-serum-eye-drops-in-the-management-of-pediatric-persistent-corneal-epithelial-defects-a-case-series
#2
Ashton J Kalhorn, Kirstin L Tawse, Avni A Shah, Jennifer L Jung, Darren G Gregory, Emily A McCourt
PURPOSE: We report our experience with the use of maternally derived serum eye drops as adjunctive treatment in the management of pediatric persistent corneal epithelial defects. METHODS: Five eyes of 4 patients were identified in a retrospective review of pediatric patients with persistent corneal epithelial defects who received maternal serum drops. Diagnoses associated with the defects comprised pontine tegmental cap dysplasia with bilateral cranial nerve V1, V2, V3, and VII palsies; pontine tegmental cap dysplasia with left cranial nerve V1, VII, and VIII palsies; traumatic left cranial nerve II, V1, V2, and VI palsies due to a basilar skull fracture; and Stevens-Johnson syndrome with ocular involvement...
January 10, 2018: Cornea
https://www.readbyqxmd.com/read/29322554/transcription-factor-foxc1-is-involved-in-anterior-part-of-cranial-base-formation
#3
Nandar Mya, Toshiko Furutera, Shigeru Okuhara, Tsutomu Kume, Masaki Takechi, Sachiko Iseki
The cranial base is a structure mainly formed through endochondral ossification, and integrated into the craniofacial complex acting as an underlying platform for developing brain. Foxc1 is an indispensable regulator during intramembranous and endochondral ossification. In this study, we found that the spontaneous loss of Foxc1 function mouse (congenital hydrocephalous), Foxc1ch/ch , showed the anterior cranial base defects including unossified presphenoid and lack of middle part of the basisphenoid bone. Consistently, hypoplastic presphenoid primordial cartilage (basal portion of the trabecular cartilage) and lack of the middle part of basisphenoid primordial cartilage (the hypophyseal cartilage) were observed at earlier developmental stage...
January 11, 2018: Congenital Anomalies
https://www.readbyqxmd.com/read/29315443/pathophysiology-of-corneal-scarring-in-persistent-epithelial-defects-after-prk-and-other-corneal-injuries
#4
Steven E Wilson, Carla S Medeiros, Marcony R Santhiago
PURPOSE: To analyze corneal persistent epithelial defects that occurred at 3 to 4 weeks after -4.50 diopter (D) photorefractive keratectomy (PRK) in rabbits and apply this pathophysiology to the treatment of persistent epithelial defects that occur after any corneal manipulations or diseases. METHODS: Two of 168 corneas that had -4.50 D PRK to study epithelial basement membrane regeneration developed spontaneous persistent epithelial defects that did not heal at 3 weeks after PRK...
January 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29259918/corneal-matrix-repair-therapy-with-the-regenerating-agent-in-neurotrophic-persistent-epithelial-defects
#5
Canan Asli Utine, Ceren Engin Durmaz, Nilufer Koçak
No abstract text is available yet for this article.
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/29207623/isoxazole-compound-ml327-blocks-myc-expression-and-tumor-formation-in-neuroblastoma
#6
Eric J Rellinger, Chandrasekhar Padmanabhan, Jingbo Qiao, Brian T Craig, Hanbing An, Jing Zhu, Hernán Correa, Alex G Waterson, Craig W Lindsley, R Daniel Beauchamp, Dai H Chung
Neuroblastomas are the most common extracranial solid tumors in children and arise from the embryonic neural crest. MYCN-amplification is a feature of ∼30% of neuroblastoma tumors and portends a poor prognosis. Neural crest precursors undergo epithelial-to-mesenchymal transition (EMT) to gain migratory potential and populate the sympathoadrenal axis. Neuroblastomas are posited to arise due to a blockade of neural crest differentiation. We have recently reported effects of a novel MET inducing compound ML327 (N-(3-(2-hydroxynicotinamido) propyl)-5-phenylisoxazole-3-carboxamide) in colon cancer cells...
October 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/29172876/limbal-stem-cell-transplantation-and-complications
#7
Jia Yin, Ula Jurkunas
Corneal epithelial stem cells are adult somatic stem cells located at the limbus and represent the ultimate source of transparent corneal epithelium. When these limbal stem cells become dysfunctional or deficient, limbal stem cell deficiency (LSCD) develops. LSCD is a major cause of corneal scarring and is particularly prevalent in chemical and thermal burns of the ocular surface. LSCD leads to conjunctivalization of the corneal surface, neovascularization, recurrent or persistent epithelial defects, ocular surface inflammation, and scarring that, in turn, lead to decreased vision, pain, and impaired quality of life...
November 27, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/29129266/single-cell-defects-cause-a-long-range-mechanical-response-in-a-confluent-epithelial-cell-layer
#8
Susanne Karsch, Deqing Kong, Jörg Großhans, Andreas Janshoff
Epithelial cells are responsible for tissue homeostasis and form a barrier to maintain chemical gradients and mechanical integrity. Therefore, rapid wound closure is crucial for proper tissue function and restoring homeostasis. In this study, the mechanical properties of cells surrounding a single-cell wound are investigated during closure of the defect. The single-cell wound is induced in an intact layer using micropipette action and responses in neighboring cells are monitored with atomic force microscopy...
November 9, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/29104070/the-role-of-amniotic-membrane-extract-eye-drop-ameed-in-in-vivo-cultivation-of-limbal-stem-cells
#9
Alireza Baradaran-Rafii, Niloufar Shayan Asl, Marzieh Ebrahimi, Sayena Jabbehdari, Shahram Bamdad, Danial Roshandel, Medi Eslani, Maryam Momeni
BACKGROUND: Limbal stem cell transplantation (LSCT) is the definitive treatment for total limbal stem cell deficiency (LSCD). This study evaluates the anatomical and visual outcomes of a surgical technique supplemented by amniotic membrane extract eye drop (AMEED) for in vivo cultivation of limbal stem cells (LSCs). METHODS: One small limbal block (2 × 1 mm) harvested from the contralateral healthy eye was transferred to the diseased eye, which had been already covered by cryopreserved amniotic membrane (N = 20)...
November 2, 2017: Ocular Surface
https://www.readbyqxmd.com/read/29053558/in-vivo-confocal-microscopy-reveals-corneal-reinnervation-after-treatment-of-neurotrophic-keratopathy-with-corneal-neurotization
#10
Simon S M Fung, Joseph Catapano, Uri Elbaz, Ronald M Zuker, Gregory H Borschel, Asim Ali
PURPOSE: To document the presence and location of new sensory nerve fibers after corneal neurotization using in vivo confocal microscopy (IVCM) in 2 patients with neurotrophic keratopathy (NK). METHODS: Two patients with unilateral advanced NK received corneal neurotization to surgically reinnervate the cornea. IVCM was used to identify subbasal nerve fibers and document corneal reinnervation. In 1 patient (case 1), IVCM was performed before and after corneal neurotization; in the second patient (case 2), IVCM was performed after neurotization and corneal transplantation...
October 17, 2017: Cornea
https://www.readbyqxmd.com/read/29029397/tsp1-promotes-alveolar-stem-cell-proliferation-and-its-down-regulation-relates-to-lung-inflammation-in-intralobar-pulmonary-sequestration
#11
Kuan Li, Qi Wu, Xin Sun, Yan Geng, Dong Leng, Hongwei Li, Subei Zhang, Qiaoxing Wang, Junping Wu, Long Xu, Xue Li, Yu Li, Qiuyang Zhang, Adrianne Kurkciyan, Jiurong Liang, Dianhua Jiang, Huaiyong Chen
An aberrant systemic artery supply results in recurrent infections in the abnormal lung lobe of intralobar pulmonary sequestration (ILS). The mechanisms underlying such persistent inflammation are unknown. Here, we hypothesize that alteration of an endothelial cell niche for alveolar epithelial cells results in the impaired proliferation potential of alveolar progenitor cells, leading to the defective defense mechanism in intralobar pulmonary sequestration. Paraffin sections of lung tissues from patients with intralobar pulmonary sequestration or from healthy controls were collected for analysis of alveolar epithelial alterations in intralobar pulmonary sequestration by quantitative RT-PCR or immunofluorescent staining...
September 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29025060/adrenomedullin-improves-fertility-and-promotes-pinopodes-and-cell-junctions-in-the-peri-implantation-endometrium
#12
Brooke C Matson, Stephanie L Pierce, Scott T Espenschied, Eric Holle, Imani H Sweatt, Eric S Davis, Robert Tarran, Steven L Young, Trudy A Kohout, Marcel van Duin, Kathleen M Caron
Implantation is a complex event demanding contributions from both embryo and endometrium. Despite advances in assisted reproduction, endometrial receptivity defects persist as a barrier to successful implantation in women with infertility. We previously demonstrated that maternal haploinsufficiency for the endocrine peptide adrenomedullin (AM) in mice confers a subfertility phenotype characterized by defective uterine receptivity and sparse epithelial pinopode coverage. The strong link between AM and implantation suggested the compelling hypothesis that administration of AM prior to implantation may improve fertility, protect against pregnancy complications, and ultimately lead to better maternal and fetal outcomes...
September 1, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28986132/new-perspectives-in-cancer-modulation-of-lipid-metabolism-and-inflammation-resolution
#13
REVIEW
Nella Prevete, Federica Liotti, Angela Amoresano, Piero Pucci, Amato de Paulis, Rosa Marina Melillo
Inflammation is considered an enabling feature of cancer. Besides the persistence of inflammatory stimuli, also defective mechanisms of resolution can lead to chronic inflammation. Inflammation resolution is an active process controlled by lipidic specialized pro-resolving mediators (SPMs), derived from ω-3 or ω-6 essential polyunsaturated fatty acids (PUFA) through the activity of lipoxygenases (ALOX5 and 15). Thus, a lack or defect in resolution mechanisms may affect cancer development and progression by prolonging inflammation...
October 3, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28966630/neurotrophic-factors-and-corneal-nerve-regeneration
#14
REVIEW
Marta Sacchetti, Alessandro Lambiase
The cornea has unique features that make it a useful model for regenerative medicine studies. It is an avascular, transparent, densely innervated tissue and any pathological changes can be easily detected by slit lamp examination. Corneal sensitivity is provided by the ophthalmic branch of the trigeminal nerve that elicits protective reflexes such as blinking and tearing and exerts trophic support by releasing neuromediators and growth factors. Corneal nerves are easily evaluated for both function and morphology using standard instruments such as corneal esthesiometer and in vivo confocal microscope...
August 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/28906090/multiple-keratoacanthoma-centrifugum-marginatum-associated-with-juvenile-idiopathic-arthritis-and-persistent-corneal-epithelial-defect-an-unusual-case
#15
Hamid R Jahadi Hosseini, Farhad Handjani, Hamid R Anvari Ardakani, Maryam S Sadati, Mohammad R Khalili, Adel Attarzadeh
We report here a case of a child with multiple keratoacanthoma centrifugum marginatum in association with corneal epithelial defect and juvenile arthritis. Keratoacanthoma is a skin tumor and the patient presented with an uncommon type of it.
October 2017: Giornale Italiano di Dermatologia e Venereologia: Organo Ufficiale, Società Italiana di Dermatologia e Sifilografia
https://www.readbyqxmd.com/read/28898355/topical-cross-linked-ha-based-hydrogel-accelerates-closure-of-corneal-epithelial-defects-and-repair-of-stromal-ulceration-in-companion-animals
#16
David L Williams, Barbara M Wirostko, Glenwood Gum, Brenda K Mann
Purpose: The purpose of this study was to determine the safety of topical ocular administration of a cross-linked, modified hyaluronic acid (xCMHA-S) hydrogel, and its effectiveness in accelerating repair and closure of acute and nonhealing corneal ulcers in companion animals as a veterinary treatment and its utility as a model for therapy in human corneal ulceration. Methods: Two concentrations of xCMHA-S (0.33% and 0.75%) were topically administered to the eyes of rabbits six times daily for 28 days to assess safety...
September 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28885228/genetic-and-transcriptomic-bases-of-intestinal-epithelial-barrier-dysfunction-in-inflammatory-bowel-disease
#17
Maaike Vancamelbeke, Tim Vanuytsel, Ricard Farré, Sare Verstockt, Marc Ferrante, Gert Van Assche, Paul Rutgeerts, Frans Schuit, Séverine Vermeire, Ingrid Arijs, Isabelle Cleynen
BACKGROUND: Intestinal barrier defects are common in patients with inflammatory bowel disease (IBD). To identify which components could underlie these changes, we performed an in-depth analysis of epithelial barrier genes in IBD. METHODS: A set of 128 intestinal barrier genes was selected. Polygenic risk scores were generated based on selected barrier gene variants that were associated with Crohn's disease (CD) or ulcerative colitis (UC) in our study. Gene expression was analyzed using microarray and quantitative reverse transcription polymerase chain reaction...
September 6, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28844373/blood-derived-eye-drops-for-the-treatment-of-cornea-and-ocular-surface-diseases
#18
REVIEW
Giuseppe Giannaccare, Piera Versura, Marina Buzzi, Laura Primavera, Marco Pellegrini, Emilio C Campos
The use of blood derived eye drops for the treatment of ocular surface disorders has become increasingly popular in recent years. The mechanism of action is the stimulation of cellular proliferation and migration by supplying an active mixture of growth factors and cytokines at the ocular surface, thus mimicking the function of the lacking natural tears. Blood derived eye drops have been used in the last decades for the treatment of a variety of ocular surface diseases, including mainly dry eye disease, persistent corneal epithelial defect, corneal ulcer, ocular surface burn, recurrent corneal erosion and limbal stem-cell deficiency...
August 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28827194/midterm-outcomes-of-penetrating-keratoplasty-after-cultivated-oral-mucosal-epithelial-transplantation-in-chemical-burn
#19
Alireza Baradaran-Rafii, Siamak Delfazayebaher, Nasser Aghdami, Ehsan Taghiabadi, Shahram Bamdad, Danial Roshandel
PURPOSE: To evaluate the midterm outcomes of penetrating keratoplasty (PKP) after cultivated oral mucosal epithelial transplantation (COMET) in patients with bilateral total limbal stem cell deficiency (LSCD) due to chemical burn. METHODS: In this prospective interventional nonrandomized case series, optical PKP was performed in patients with severe stromal opacity after successful COMET. Main outcome measures were stability of the ocular surface, visual acuity improvement and corneal graft survival...
October 2017: Ocular Surface
https://www.readbyqxmd.com/read/28753576/isoxazole-compound-ml327-blocks-myc-expression-and-tumor-formation-in-neuroblastoma
#20
Eric J Rellinger, Chandrasekhar Padmanabhan, Jingbo Qiao, Brian T Craig, Hanbing An, Jing Zhu, Hernán Correa, Alex G Waterson, Craig W Lindsley, R Daniel Beauchamp, Dai H Chung
Neuroblastomas are the most common extracranial solid tumors in children and arise from the embryonic neural crest. MYCN-amplification is a feature of ~30% of neuroblastoma tumors and portends a poor prognosis. Neural crest precursors undergo epithelial-to-mesenchymal transition (EMT) to gain migratory potential and populate the sympathoadrenal axis. Neuroblastomas are posited to arise due to a blockade of neural crest differentiation. We have recently reported effects of a novel MET inducing compound ML327 (N-(3-(2-hydroxynicotinamido) propyl)-5-phenylisoxazole-3-carboxamide) in colon cancer cells...
July 20, 2017: Oncotarget
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