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Lacrimal gland

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https://www.readbyqxmd.com/read/28203199/plexiform-neurofibroma-involving-the-lacrimal-gland
#1
Mikael Hofsli, Nico Gampenrieder, Steffen Heegaard
BACKGROUND: To present a rare case of a 2-year-old girl with neurofibromatosis type 1 (NF1) who presented with ptosis of the right upper eyelid along with a tumor in the eyelid. METHODS: A magnetic resonance imaging scan of the orbit revealed a solid tumor located extraconally at the site of the right lacrimal gland. A transcranial orbitotomy was performed. RESULTS: Histopathological examination demonstrated expanded nerve branches/fascicles cut in various planes in between normal lacrimal gland acini...
January 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28203109/a-b-cell-lymphoma-case-that-is-unclassifiable-and-intermediate-between-diffuse-large-b-cell-lymphoma-and-burkitt-lymphoma-of-lacrimal-gland
#2
Tatsuya Yunoki, Jun Murakami, Yukihiro Imagawa, Takahiko Nakajima, Atsushi Hayashi
A 60-year-old woman presented with acute eyelid swelling and a subcutaneous hemorrhage in the right eye. Magnetic resonance imaging showed a spherical tumor of the lacrimal gland. The tumor was removed by the Kroenlein method. We diagnosed as a B-cell lymphoma that is unclassifiable, and intermediate between diffuse large B-cell lymphoma (DLBCL) and Burkitt lymphoma (BL) (intermediate DLBCL/BL) based on its immunohistopathological examination and c-MYC/IgH rearrangement. We administered six cycles of dose-adjusted-EPOCH-R (etoposide, prednisone, vincristine, cyclophosphamide, doxorubicin hydrochloride, and rituximab) therapy, and remission of the lymphoma was obtained...
2017: International Medical Case Reports Journal
https://www.readbyqxmd.com/read/28192800/molecular-profiling-of-the-developing-lacrimal-gland-reveals-putative-role-of-notch-signaling-in-branching-morphogenesis
#3
Galina Dvoriantchikova, Wensi Tao, Steve Pappas, Gabriel Gaidosh, David T Tse, Dmitry Ivanov, Daniel Pelaez
Purpose: Although normal function of the lacrimal gland is essential for vision (and thus for human well-being), the lacrimal gland remains rather poorly understood at a molecular level. The purpose of this study was to identify new genes and signaling cascades involved in lacrimal gland development. Methods: To identify these genes, we used microarray analysis to compare the gene expression profiles of developing (embryonic) and adult lacrimal glands. Differential data were validated by quantitative RT-PCR, and several corresponding proteins were confirmed by immunohistochemistry and Western blot analysis...
February 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28170196/lacrimal-gland-repair-using-progenitor-cells
#4
Anastasia Gromova, Dmitry A Voronov, Miya Yoshida, Suharika Thotakura, Robyn Meech, Darlene A Dartt, Helen P Makarenkova
In humans, the lacrimal gland (LG) is the primary contributor to the aqueous layer of the tear film. Production of tears in insufficient quantity or of inadequate quality may lead to aqueous-deficiency dry eye (ADDE). Currently there is no cure for ADDE. The development of strategies to reliably isolate LG stem/progenitor cells from the LG tissue brings great promise for the design of cell replacement therapies for patients with ADDE. We analyzed the therapeutic potential of epithelial progenitor cells (EPCPs) isolated from adult wild-type mouse LGs by transplanting them into the LGs of TSP -1(-/-) mice, which represent a novel mouse model for ADDE...
January 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28165063/heavy-chain-hyaluronan-pentraxin-3-from-amniotic-membrane-suppresses-inflammation-and-scarring-in-murine-lacrimal-gland-and-conjunctiva-of-chronic-graft-versus-host-disease
#5
Yoko Ogawa, Hua He, Shin Mukai, Toshihiro Imada, Shigeru Nakamura, Chen-Wei Su, Megha Mahabole, Scheffer C G Tseng, Kazuo Tsubota
Chronic graft-versus-host disease (cGVHD) is a major complication of hematopoietic stem cell transplantation. Dry eye disease is the prominent ocular sequel of cGVHD and is caused by excessive inflammation and fibrosis in the lacrimal glands. Heavy chain-Hyaluronan/Pentraxin 3 (HC-HA/PTX3) is a complex purified from human amniotic membrane (AM) and known to exert anti-inflammatory and anti-scarring actions. In this study, we utilized a mouse model of cGVHD to examine whether HC-HA/PTX3 could attenuate dry eye disease elicited by cGVHD...
February 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28165054/novel-treatment-of-chronic-graft-versus-host-disease-in-mice-using-the-er-stress-reducer-4-phenylbutyric-acid
#6
Shin Mukai, Yoko Ogawa, Fumihiko Urano, Chie Kudo-Saito, Yutaka Kawakami, Kazuo Tsubota
Chronic graft-versus-host disease (cGVHD) is a notorious complication of allogeneic hematopoietic stem cell transplantation and causes disabling systemic inflammation and fibrosis. In this novel study, we focused on a relationship between endoplasmic reticulum (ER) stress and cGVHD, and aimed to create effective treatment of cGVHD. A series of experiments were conducted using a mouse model of cGVHD. Our data suggested (1) that ER stress was elevated in organs affected by cGVHD and (2) that 4-phenylbutyric acid (PBA) could reduce cGVHD-induced ER stress and thereby alleviate systemic inflammation and fibrosis...
February 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28159752/studies-of-an-androgen-binding-protein-knockout-corroborate-a-role-for-salivary-abp-in-mouse-communication
#7
Amanda G Chung, Phillip M Belone, Barbora Vošlajerová Bímová, Robert M Karn, Christina M Laukaitis
The house mouse Androgen-binding protein (Abp) gene family is comprised of 64 paralogs, 30 Abpa and 34 Abpbg, encoding the alpha (ABPA) and betagamma (ABPBG) protein subunits that are disulfide-bridged to form dimers in secretions. Only 14 Abp genes are expressed in distinct patterns in the lacrimal (11) and submandibular glands (3). We created a knockout mouse line lacking two of the three genes expressed in submandibular glands, Abpa27 and Abpbg27, by replacing them with the neomycin resistance gene. The knockout genotype (-/-) showed no Abpa27 or Abpbg27 transcripts in submandibular gland cDNA libraries and there was a concomitant lack of protein expression of ABPA27 and ABPBG27 in the -/- genotype saliva, shown by elimination of these two proteins from the saliva proteome and the loss of cross-reactive material in the acinar cells of the submandibular glands...
February 3, 2017: Genetics
https://www.readbyqxmd.com/read/28142222/flagellar-filament-structural-protein-induces-sj%C3%A3-gren-s-syndrome-like-sialadenitis-in-mice
#8
Tomoaki Higuchi, Ikuko Haruta, Noriyuki Shibata, Naoko Yanagisawa, Junji Yagi
OBJECTIVE: Sjögren's syndrome (SS) is a systemic autoimmune disease that primarily affects lacrimal and salivary glands. We previously reported that FliC derived from E. coli could induce autoimmune pancreatitis-like lesions. From these results, we speculated that FliC could also induce SS-like exocrinopathy. In the present study, we investigated the effects of chronic exposure to FliC on lacrimal and salivary glands and the possibility that it might lead to an autoimmune response. METHODS: C57BL/6 mice were repeatedly injected with FliC and histological changes, serum levels of cytokine/chemokines and autoantibodies were evaluated at different time points after the final injection...
January 31, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28124612/unique-phenotypes-and-functions-of-follicular-helper-t-cell-and-regulatory-t-cell-in-sj%C3%A3-gren-s-syndrome
#9
Masako Saito, Kunihiro Otsuka, Aya Ushio, Akiko Yamada, Rieko Arakaki, Yasusei Kudo, Naozumi Ishimaru
Sjögren's syndrome (SS) is a T cell-mediated autoimmune disease of the systemic exocrine glands, such as salivary and lacrimal glands. A variety of T-cell subpopulations maintain immune tolerance in the thymus and periphery through complex immune responses including cellular and humoral immunity. The T-cell subpopulations exhibiting abnormal or unique phenotypes and impaired functionality have been reported to play important roles in the cellular mechanisms of autoimmunity in SS patients and animal models of SS...
January 25, 2017: Current Rheumatology Reviews
https://www.readbyqxmd.com/read/28122086/rapamycin-eye-drops-suppress-lacrimal-gland-inflammation-in-a-murine-model-of-sj%C3%A3-gren-s-syndrome
#10
Mihir Shah, Maria C Edman, Srikanth Reddy Janga, Frances Yarber, Zhen Meng, Wannita Klinngam, Jonathan Bushman, Tao Ma, Siyu Liu, Stan Louie, Arjun Mehta, Chuanqing Ding, J Andrew MacKay, Sarah F Hamm-Alvarez
Purpose: To evaluate the efficacy of topical rapamycin in treating autoimmune dacryoadenitis in a mouse model of Sjögren's syndrome. Methods: We developed rapamycin in a poly(ethylene glycol)-distearoyl phosphatidylethanolamine (PEG-DSPE) micelle formulation to maintain solubility. Rapamycin or PEG-DSPE eye drops (vehicle) were administered in a well-established Sjögren's syndrome disease model, the male nonobese diabetic (NOD) mice, twice daily for 12 weeks starting at 8 weeks of age...
January 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28108899/a-case-of-mistaken-identity-the-role-of-lacrimal-gland-pleomorphic-adenoma-tissue-diagnosis
#11
Brent Skippen, Carol M Lane, Margaret Hourihan, Daniel S Morris
PURPOSE: Lacrimal gland lesions have diverse pathologies. Bone remodelling on imaging may suggest a benign lacrimal gland pleomorphic adenoma (LGPA) rather than a malignant process. METHODS: The authors report a case of malignant pleomorphic adenocarcinoma, which was misdiagnosed clinico-radiologically as a benign LGPA. Lesions with bone remodelling on CT imaging were subsequently analysed amongst a cohort of 31 lacrimal gland lesions from a single tertiary centre...
January 21, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28099084/mechanisms-and-new-strategies-for-primary-sj%C3%A3-gren-s-syndrome
#12
Clio P Mavragani
Primary Sjögren's syndrome (SS) is a common chronic autoimmune disease characterized by lymphocytic infiltration of exocrine glands, mainly salivary and lacrimal, resulting in oral and ocular dryness, although virtually any organ system can be affected. SS-related systemic manifestations are classified as either related to the presence of periepithelial infiltrates in exocrine and parenchymal organs or resulting from immunocomplex deposition due to B cell hyperactivity with increased risk for B cell lymphoma development...
January 14, 2017: Annual Review of Medicine
https://www.readbyqxmd.com/read/28081151/human-lacrimal-gland-gene-expression
#13
Vinay Kumar Aakalu, Sowmya Parameswaran, Mark Maienschein-Cline, Neil Bahroos, Dhara Shah, Marwan Ali, Subramanian Krishnakumar
BACKGROUND: The study of human lacrimal gland biology and development is limited. Lacrimal gland tissue is damaged or poorly functional in a number of disease states including dry eye disease. Development of cell based therapies for lacrimal gland diseases requires a better understanding of the gene expression and signaling pathways in lacrimal gland. Differential gene expression analysis between lacrimal gland and other embryologically similar tissues may be helpful in furthering our understanding of lacrimal gland development...
2017: PloS One
https://www.readbyqxmd.com/read/28076899/genome-wide-association-analysis-reveals-genetic-heterogeneity-of-sj%C3%A3-gren-s-syndrome-according-to-ancestry
#14
Kimberly E Taylor, Quenna Wong, David M Levine, Caitlin McHugh, Cathy Laurie, Kimberly Doheny, Mi Y Lam, Alan N Baer, Stephen Challacombe, Hector Lanfranchi, Morten Schiødt, M Srinivasan, Hisanori Umehara, Frederick B Vivino, Yan Zhao, Stephen Shiboski, Troy E Daniels, John S Greenspan, Caroline H Shiboski, Lindsey A Criswell
OBJECTIVE: Sjögren's Syndrome (SS) is a systemic autoimmune disease affecting primarily the lacrimal and salivary glands. The Sjögren's International Collaborative Clinical Alliance (SICCA) is an international multisite observational study whose participants have been genotyped on the Omni 2.5M platform and undergone deep phenotyping using common protocol-directed methods, providing a unique opportunity to examine the genetic etiology of SS across ancestry and disease subsets. METHODS: We perform GWAS analyses utilizing dbGaP controls on all subjects (1405 cases, 1622 SICCA controls, 3125 external controls), European (similarly 585, 966, 2580), and Asian (similarly 460, 224, 901) with ancestry adjustments via principal component analyses...
January 11, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28069907/eye-swelling-and-lacrimal-gland-lymphoma
#15
Priyadarshini Loganathan, Mahesh Gajendran
We report an interesting case of lacrimal gland diffuse large B-cell lymphoma (DLBCL) in a 54 year old male who presented with 4 week history of progressively worsening eye swelling. The diagnosis was confirmed with orbital biopsy and the patient was started on chemotherapy with improvement in the eye swelling.
January 9, 2017: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/28063355/orbital-oncocytoma-evaluation-with-dynamic-contrast-enhanced-magnetic-resonance-imaging-using-a-time-signal-intensity-curve-and-positive-enhancement-integral-images
#16
Nutchawan Jittapiromsak, Ping Hou, Michelle D Williams, T Linda Chi
Oncocytomas, which are benign epithelial tumors filled with abundant mitochondria, arise from ductal cells. Oncocytomas rarely occur in the orbit. We present a case of pathologically proven orbital oncocytoma of the lacrimal gland studied by dynamic contrast-enhanced magnetic resonance imaging (DCE MRI). DCE MRI has potential as an adjunct to conventional MRI in the differential diagnosis and tumor margin delineation of orbital oncocytoma. Simple assessments of the time-signal intensity curve, semiquantitative parameters, and post-processing positive enhancement integral images should be considered in the evaluation of orbital masses found on MRI...
December 6, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/28060936/clinical-evaluation-of-a-royal-jelly-supplementation-for-the-restoration-of-dry-eye-a-prospective-randomized-double-blind-placebo-controlled-study-and-an-experimental-mouse-model
#17
Sachiko Inoue, Motoko Kawashima, Ryuji Hisamura, Toshihiro Imada, Yusuke Izuta, Shigeru Nakamura, Masataka Ito, Kazuo Tsubota
BACKGROUND: Dry eye is a multifactorial disease characterized by ocular discomfort and visual impairment. Lacrimal gland function has been shown to decrease with aging, a known potent risk factor for dry eye. We have previously found that orally administrated royal jelly (RJ) restored tear secretion in a rat model of dry eye. METHODS AND FINDINGS: We examined the effects of RJ oral administration on dry eye in this prospective, randomized, double-blind, placebo-controlled study...
2017: PloS One
https://www.readbyqxmd.com/read/28051088/lacrimal-gland-derived-il-22-regulates-il-17-mediated-ocular-mucosal-inflammation
#18
Y W Ji, S K Mittal, H S Hwang, E-J Chang, J H Lee, Y Seo, A Yeo, H Noh, H S Lee, S K Chauhan, H K Lee
Inflammatory damage of mucosal surface of the eye is a hallmark of dry eye disease (DED) and, in severe cases, can lead to significant discomfort, visual impairment, and blindness. DED is a multifactorial autoimmune disorder with a largely unknown pathogenesis. Using a cross-sectional patient study and a well-characterized murine model of DED, herein we investigated the immunoregulatory function of interleukin-22 (IL-22) in the pathogenesis of DED. We found that IL-22 levels were elevated in lacrimal fluids of DED patients and inversely correlated with severity of disease...
January 4, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28050416/a-rare-case-of-an-atypical-solitary-fibrous-tumour-of-orbit
#19
Hetal Mahendra Mehta, Avinash Babarao Ingole, Anuja Mihir Gharat, Sujit Mardansingh Murade, Anjali Darius Nicholson
Solitary fibrous tumours are of mesenchymal origin and comprise of uncommon spindle cell neoplasias. Most commonly the lesions arise from pleura but other rarer sites include lungs, peritoneum, pericardium, nasal cavities, thyroid, parotid gland and orbit. We report the case of a 41-year-old male patient who presented to us with a painless, progressive growth of a mass in the superior part of left orbit with proptosis and inferotemporal displacement of the left eye. Computed Tomography (CT) scan revealed homogeneous enhancing lesion in the superior compartment of left orbit in the extraconal region, extending intraconally and distorting the globe...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28043400/dental-issues-in-lacrimo-auriculo-dento-digital-syndrome-an-autosomal-dominant-condition-with-clinical-and-genetic-variability
#20
M J Hajianpour, Hannah Bombei, Scott M Lieberman, Rachael Revell, Rachana Krishna, Robert Gregorsok, Simon Kao, Jeff M Milunsky
BACKGROUND AND OVERVIEW: Lacrimo-auriculo-dento-digital (LADD) syndrome is an autosomal dominant disorder with variable lacrimal and salivary gland hypoplasia and aplasia, auricular anomalies and hearing loss, dental defects and caries, and digital anomalies. CASE DESCRIPTION: The authors present the cases of 2 unrelated children with enamel defects and history of dry mouth leading to recurrent dental caries. The referring diagnoses were Sjögren disease and hypohidrotic ectodermal dysplasia, respectively...
December 30, 2016: Journal of the American Dental Association
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