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Lacrimal gland

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https://www.readbyqxmd.com/read/28431436/enhanced-tearing-by-electrical-stimulation-of-the-anterior-ethmoid-nerve
#1
Mark Brinton, Andrea L Kossler, Zara M Patel, James Loudin, Manfred Franke, Christopher N Ta, Daniel Palanker
Purpose: Electrical neurostimulation enhances tear secretion, and can be applied to treatment of dry eye disease. Using a chronic implant, we evaluate the effects of stimulating the anterior ethmoid nerve on the aqueous, lipid, and protein content of secreted tears. Methods: Neurostimulators were implanted beneath the nasal mucosa in 13 New Zealand white rabbits. Stimulations (2.3-2.8 mA pulses of 75-875 μs in duration repeated at 30-100 Hz for 3 minutes) were performed daily, for 3 weeks to measure changes in tear volume (Schirmer test), osmolarity (TearLab osmometer), lipid (Oil-Red-O staining), and protein (BCA assay, mass spectrometry)...
April 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28423973/neurological-involvement-of-igg4-related-disease-description-of-a-case-and-review-of-the-literature
#2
Marco Varrassi, Camilla Gianneramo, Francesco Arrigoni, Paolo Cerrone, Patrizia Sucapane, Carmine Marini, Alessandra Splendiani
IgG4-related disease is a recently discovered pathological entity, histologically characterised by fibrosis and IgG4-positive plasma cell infiltration. This condition may virtually involve every site of the organism, with a various range of clinical presentations. The most commonly affected organ is the pancreatic gland, but it can also involve the biliary tract, salivary and lacrimal glands, kidneys, orbital tissues, lymph nodes, lungs and many others. More recently, IgG4-related disease has been demonstrated to involve, in rare cases, also the central nervous system, with a pattern mainly characterised by hypertrophic pachymeningitis...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28422804/a-review-of-ocular-graft-versus-host-disease
#3
Saleha Z Munir, James Aylward
: Graft-versus-host disease (GVHD) is a major complication that occurs following allogeneic hematopoietic stem cell transplantation, which is a potential curative therapy used in a variety of malignant or benign hematological diseases. Graft-versus-host disease primarily occurs in many organs, but most notably in the skin, lungs, gastrointestinal tract, liver, eyes, mucosa, and musculoskeletal system. Ocular manifestations of GVHD may precede other systemic GVHD findings, and it may be a poor prognosis for mortality...
May 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/28416688/knockout-of-the-lrrc26-subunit-reveals-a-primary-role-of-lrrc26-containing-bk-channels-in-secretory-epithelial-cells
#4
Chengtao Yang, Vivian Gonzalez-Perez, Taro Mukaibo, James E Melvin, Xiao-Ming Xia, Christopher J Lingle
Leucine-rich-repeat-containing protein 26 (LRRC26) is the regulatory γ1 subunit of Ca(2+)- and voltage-dependent BK-type K(+) channels. BK channels that contain LRRC26 subunits are active near normal resting potentials even without Ca(2+), suggesting they play unique physiological roles, likely limited to very specific cell types and cellular functions. By using Lrrc26 KO mice with a β-gal reporter, Lrrc26 promoter activity is found in secretory epithelial cells, especially acinar epithelial cells in lacrimal and salivary glands, and also goblet and Paneth cells in intestine and colon, although absent from neurons...
April 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28399336/an-update-on-tumors-of-the-lacrimal-gland
#5
Simon Andreasen, Bita Esmaeli, Sarah Linéa von Holstein, Lauge Hjorth Mikkelsen, Peter Kristian Rasmussen, Steffen Heegaard
Lacrimal gland tumors are rare and constitute a wide spectrum of different entities ranging from benign epithelial and lymphoid lesions to high-grade carcinomas, lymphomas, and sarcomas with large differences in prognosis and clinical management. The symptoms and findings of a lacrimal gland lesion are a growing mass at the site of the lacrimal gland, including displacement of the eyeball, decreased motility, diplopia, and ptosis. Pain is the cardinal symptom of an adenoid cystic carcinoma. Radiological findings characteristically include an oval, well-demarcated mass for benign lesions whereas malignant lesions typically display calcifications, destruction of bone, and invasion of adjacent structures...
March 2017: Asia-Pacific Journal of Ophthalmology
https://www.readbyqxmd.com/read/28399335/recent-advances-in-orbital-tumors-a-review-of-publications-from-2014-2016
#6
Santosh G Honavar, Fairooz P Manjandavida
The aim of this review article is to provide an update of the current literature on orbital tumors. The authors conducted a PubMed literature search of English language articles published between January 2014 and December 2016 using the following search items: orbit, tumors, lacrimal gland, lymphoma, hemangioma, lymphangioma. The authors included reviews, original articles, case series, and case reports with relevant new information. There is new information about the clinical spectrum of orbital tumors, capillary hemangioma, cavernous hemangioma, lymphangioma, orbital venous malformation, lacrimal gland tumors, and orbital lymphoma...
March 2017: Asia-Pacific Journal of Ophthalmology
https://www.readbyqxmd.com/read/28396281/the-neural-pathway-for-lacrimal-gland-tear-secretion-in-new-zealand-white-rabbits
#7
Jiaojiao Wang, Rongyi Zhou, Weiping Gao
OBJECTIVE: We investigated the neural pathway for tear secretion from the lacrimal gland of New Zealand White rabbits. METHODS: Nine healthy adult New Zealand White rabbits were randomly divided into three experimental groups, namely, an irritant-stimulated group, a non-stimulated group, and a saline-stimulated group. Sanitized dry cotton swabs with menthol were used to wipe both of the rabbits' eyelids in the irritant-stimulated group, and the non-stimulated group and saline- stimulated group were compared as controls...
April 7, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28388345/a-new-cause-of-lacrimal-gland-calcification-retained-metallic-foreign-bodies
#8
Alexander J Brent, Peter M Mota, Gerald Saldanha, Ram Vaidhyanath, Raghavan Sampath
A 49-year-old male presented with a 4 month history of dysaesthesia in the left periorbital region. A CT scan showed a lacrimal gland mass with areas of dense calcification. Biopsies of the left lacrimal gland revealed a silver material with associated chronic granulomatous inflammation and secondary calcification. The histological specimen was sent for X-ray microanalysis. This confirmed the silver material to be aluminium. The metal fragments were subsequently discovered to be from a car aerial, which caused an orbital impaling injury 20 years prior to presentation...
April 2017: Orbit
https://www.readbyqxmd.com/read/28380105/accidental-lacrimal-gland-removal-during-resection-of-the-levator-palpebrae-superioris-muscle
#9
Patricia Akaishi, Alicia Galindo-Ferreiro, Sahar M Elkhamary, Zakeya Al-Sadah, Alberto Galvez-Ruiz, A Augusto Cruz
Accidental removal of the lacrimal gland is a rare complication of ptosis surgery. We report two children who underwent large unilateral levator palpebrae superioris resections (LPSr). After surgery, both patients developed dry eye. Post-operatively, the parents of both patients noticed no tears in the affected eye when their child cried. Computed tomography proved the absence of the lacrimal gland in the operated eye in both patients. Oculoplastic surgeons should pay close attention to the anatomy of the levator muscle and its proximity to surrounding tissues in order to avoid lesions on important orbital structures, including the lacrimal gland, and to avoid the development of long-term dry eye...
January 2017: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/28380100/short-and-long-term-effects-of-zinc-treatment-on-lacrimal-gland-histopathology-and-tear-functions-tests-in-radioiodine-administered-rats
#10
Firdevs Ornek, Damla Erginturk Acar, Ugur Acar, Ozdemir Ozdemir, Hasan Ikbal Atilgan, Nihat Yumusak, Basak Boztok Ozgermen
Purpose: To investigate the short-term (1 week) and long-term (8 weeks) protective effects of zinc administration on radioiodine (RAI)-induced lacrimal gland damage of rats. Methods: A total of 40 rats were divided into two groups: an RAI group (n=20), which was administrated a single dose of 3 mCi of 131I and 1 mL physiologic saline for 7 days by gastric gavage, and a zinc group (n=20), which received a single dose of 3 mCi of 131I and 1 mL of physiologic saline containing zinc sulfate at a concentration of 10 mg/kg concentration for 7 days by gastric gavage...
January 2017: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/28379171/restoration-of-tear-secretion-in-a-murine-dry-eye-model-by-oral-administration-of-palmitoleic-acid
#11
Yuki Kimura, Daisuke Mori, Toshihiro Imada, Yusuke Izuta, Michiko Shibuya, Hisayo Sakaguchi, Erina Oonishi, Naoko Okada, Kenji Matsumoto, Kazuo Tsubota
Sea buckthorn (Hippophae rhamnoides)-derived products have traditionally been used as food and medicinal ingredients in Eastern countries. The purpose of this study was to investigate the effect of oral intake of sea buckthorn oil products on tear secretion using a murine dry eye model. Orally administered sea buckthorn pulp oil (not seed oil) restored aqueous tear secretion to its normal value under a dry eye condition. Palmitoleate (C16:1), a fatty acid present in sea buckthorn pulp oil, preserved tear secretion and suppressed inflammatory cytokines in the lacrimal gland to the same extent as that by pulp oil...
April 5, 2017: Nutrients
https://www.readbyqxmd.com/read/28372859/the-wedge-sign-an-imaging-sign-for-aggressive-lacrimal-gland-disease
#12
Daniele Lorenzano, Geoffrey E Rose
PURPOSE: Lacrimal gland carcinoma can form a triangle of tissue back to the orbital apex, intraconal spread apparently being prevented by the intermuscular septum. The "wedge sign" frequency is assessed in lacrimal carcinoma, lacrimal lymphoma, or dacryoadenitis. DESIGN: Retrospective masked review of images from patients with biopsy-proven lacrimal gland pathology. METHODS: For each patient, the presence of a triangle of tissue between the lateral rectus and lateral orbital wall and the superior rectus and the orbital roof was assessed by masked review of computed tomography or magnetic resonance imaging...
March 31, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28367391/igg4-related-disease-presenting-as-a-pancreatic-mass-and-bilateral-lacrimal-gland-swelling
#13
Uroosa Ibrahim, Amina Saqib, Nikhil Nalluri, Muhammad R Raza, Mark Goldstein
IgG4-related disease is characterized by multi-system inflammation and possible elevation in serum immunoglobulin-G4 level. Treatment regimens include glucocorticoids, disease-modifying anti-rheumatic agents and recently, rituximab infusions have been reported to be effective in treatment-refractory disease. We present a case of a 64-year-old male presenting with acute abdominal pain and scleral icterus. An abdominal ultrasound demonstrated extensive biliary ductal dilatation. A computed tomography (CT) scan and a magnetic resonance cholangiopancreatography (MRCP) revealed a 4...
February 24, 2017: Curēus
https://www.readbyqxmd.com/read/28367175/analysis-of-orbital-malignancies-presenting-in-a-tertiary-care-hospital-in-pakistan
#14
Asad Aslam Khan, Suhail Sarwar, Mohammad Ali A Sadiq, Imran Ahmad, Nayab Tariq, Sibghat-Ul-Noor
OBJECTIVE: To determine the frequencies of various orbital malignancies amongst orbital lesions in patients presenting in a tertiary care hospital in Pakistan. METHODS: A retrospective analysis of 666 orbital cases with an established histopathological diagnosis of malignant tumors treated in Mayo Hospital Lahore from 1996 to 2015 (20 years). RESULTS: About 66% of the malignant tumors were primary, 25% secondary, 8% haematopoietic and 1% metastatic...
January 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28361316/generation-of-a-bioengineered-lacrimal-gland-by-using-the-organ-germ-method
#15
Masatoshi Hirayama, Kazuo Tsubota, Takashi Tsuji
In organogenesis including lacrimal gland development, cell arrangement within a tissue plays an important role. The lacrimal gland develops from embryonic ocular surface epithelium through reciprocal epithelial and mesenchymal interaction, which is organized by interactive regulation of various pathways of signaling molecules. Current development of an in vitro three-dimensional cell manipulation procedure to generate a bioengineered organ germ, named as the organ germ method, has shown the regeneration of a histologically correct and fully functional bioengineered lacrimal gland after engraftment in vivo...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28359767/bilateral-sub-acute-lacrimal-gland-enlargement-mimicking-dacryoadenitis-in-a-7-year-old-boy-a-rare-adverse-effect-of-valproic-acid-sodium-valproate
#16
Christopher Lyons, Flavia Godoy, Koen Vanden Driesche
No abstract text is available yet for this article.
March 27, 2017: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/28353146/the-lacrimal-gland-development-wound-repair-and-regeneration
#17
REVIEW
Yupeng Yao, Yan Zhang
The lacrimal gland (LG) is important as it has a significant role in maintaining the stability of the microenvironment of the ocular surface. When a loss of function occurs in the LG, a significant reduction in tear production and dry eye disease (DED) may occur. A mammalian LG is a secretory gland consisting of acini and ducts. The interaction between epithelial cells and mesenchymal cells plays a major role during development and the self-restoration process of the gland. Some factors, such as fibroblast growth factor 10 and bone morphogenetic protein 7, are associated with these processes...
March 28, 2017: Biotechnology Letters
https://www.readbyqxmd.com/read/28348600/delivery-of-bone-marrow-derived-mesenchymal-stem-cells-improves-tear-production-in-a-mouse-model-of-sj%C3%A3-gren-s-syndrome
#18
Hema S Aluri, Mahta Samizadeh, Maria C Edman, Dillon R Hawley, Helene L Armaos, Srikanth R Janga, Zhen Meng, Victor G Sendra, Pedram Hamrah, Claire L Kublin, Sarah F Hamm-Alvarez, Driss Zoukhri
The purpose of the present study was to test the potential of mouse bone marrow-derived mesenchymal stem cells (BD-MSCs) in improving tear production in a mouse model of Sjögren's syndrome dry eye and to investigate the underlying mechanisms involved. NOD mice (n = 20) were randomized to receive i.p. injection of sterile phosphate buffered saline (PBS, control) or murine BD-MSCs (1 × 10(6) cells). Tears production was measured at baseline and once a week after treatment using phenol red impregnated threads...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28328558/dacryoadenitis-as-the-initial-presentation-of-a-natural-killer-t-cell-lymphoma
#19
Juan C Jiménez-Pérez, Frederick A Jakobiec, Fouad R Zakka, Michael K Yoon
Primary orbital natural killer T-cell lymphoma (NKTCL) is a rare condition with only a few published cases in the literature. Over 1 month, an 81-year-old man developed progressive left periocular inflammation unresponsive to treatment. Clinical examination and imaging studies demonstrated a left lacrimal gland enlargement. Bilateral anterior uveitis and erythematous nontender cutaneous lesions were also found. Biopsies of the skin and lacrimal gland on the back revealed histopathologic and immunohistochemical findings confirming Epstein-Barr virus-positive NKTCL...
March 21, 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28321568/gastrointestinal-and-liver-lesions-in-primary-childhood-sj%C3%A3-gren-syndrome
#20
Yasuyo Kashiwagi, Tatsuro Hatsushika, Norito Tsutsumi, Soken Go, Shigeo Nishimata, Hisashi Kawashima
Sjögren syndrome (SS) is characterized by lymphocytic infiltration of exocrine glands, mainly the lacrimal and salivary glands, leading to keratoconjunctivitis sicca and xerostomia. SS is one of the most common autoimmune rheumatic diseases in adults; however, few cases of primary childhood SS with gastrointestinal and liver lesions have been reported in the literature. We report five cases of primary childhood SS with gastrointestinal and liver lesions. Multiple gastric biopsies in four cases revealed atrophic gastritis in the antrum of the stomach or chronic gastritis...
March 20, 2017: Clinical Rheumatology
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