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https://www.readbyqxmd.com/read/28641034/imaging-of-proximal-lacrimal-system-with-time-domain-anterior-segment-optical-coherence-tomography-in-asian-indian-population
#1
Swati Singh, Arnav Ghosh, Suryasnata Rath
This article reports proximal lacrimal system parameters using Anterior Segment Optical Coherence Tomography (ASOCT-Visante) in an apparently normal Asian Indian population with assessment of any correlation between tear meniscus height and punctal diameter. This was a prospectively designed observational study that included healthy adults, who volunteered for optical coherence tomography imaging (OCT) of their proximal lacrimal system. Time domain ASOCT (Visante) images of the punctum and proximal canaliculus were captured using the high resolution corneal scan protocol...
June 22, 2017: Orbit
https://www.readbyqxmd.com/read/28428804/morphogenesis-of-honeybee-hypopharyngeal-gland-during-pupal-development
#2
Sascha Peter Klose, Daniel Rolke, Otto Baumann
BACKGROUND: The hypopharyngeal gland of worker bees contributes to the production of the royal jelly fed to queens and larvae. The gland consists of thousands of two-cell units that are composed of a secretory cell and a duct cell and that are arranged in sets of about 12 around a long collecting duct. RESULTS: By fluorescent staining, we have examined the morphogenesis of the hypopharyngeal gland during pupal life, from a saccule lined by a pseudostratified epithelium to the elaborate organ of adult worker bees...
2017: Frontiers in Zoology
https://www.readbyqxmd.com/read/28341695/cancer-associated-epiphora-a-retrospective-analysis-of-referrals-to-a-tertiary-oculoplastic-practice
#3
Sunah Kang, Ji Won Seo, Ho-Seok Sa
AIM: To report the underlying causes and treatment outcome of lacrimal drainage obstruction in patients with cancer-associated epiphora. METHODS: A single-centre retrospective review was performed for consecutive referrals to an oculoplastic surgeon for cancer-associated epiphora between 2010 and 2016. Charts were reviewed for underlying neoplastic conditions, pharmacy records, radiotherapy records, levels of obstruction of the lacrimal drainage apparatus and treatment methods and outcome...
March 23, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28337064/canalicular-pyocele-a-new-entity-and-literature-review
#4
Osama H Ababneh
Canaliculoceles are rare, and under-recognized lesions of the upper lacrimal drainage system that may present as medial canthal masses or swelling. The current case is that of an 85-year-old female patient presented with a painful right upper lid medial, cystic swelling of 10-day duration involving the punctum and the upper canaliculus. A literature review showed that this is the seventh reported case of a canaliculocele but the first case of acute onset that is associated with inflammatory signs and symptoms and accumulation of purulent material...
January 2017: Saudi Journal of Ophthalmology: Official Journal of the Saudi Ophthalmological Society
https://www.readbyqxmd.com/read/28261774/evaluation-of-anatomical-and-functional-outcomes-in-patients-undergoing-repair-of-traumatic-canalicular-laceration
#5
Hasan Aytoğan, Şeyda Karadeniz Uğurlu
BACKGROUND: The present study was designed to evaluate functional and anatomical success of traumatic canalicular laceration repair. METHODS: Consecutive patients who presented at Atatürk Training and Research Hospital Eye Clinic, İzmir Katip Çelebi University Faculty of Medicine and had canalicular laceration repair performed by the same surgeon between January 2009 and December 2014 were included in the study. Demographic data, length of time between injury and surgery, and cause of the trauma, surgical method employed, and duration of follow-up were recorded...
January 2017: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/28243781/the-variants-of-the-retro-and-hypotympanum-an-endoscopic-anatomical-study
#6
Marco Bonali, Lukas Anschuetz, Matteo Fermi, Domenico Villari, Giulia Adalgisa Mariani, Lucia Manzoli, Marco Caversaccio, Livio Presutti
The retro- and hypotympanum are hidden areas of the middle ear, only poorly recognized. Nevertheless, this region is of relevant clinical significance, since it is regularly affected by disease such as cholesteatoma. The aim of this study is to explore and describe the anatomical variants of the hypo- and retrotympanum by the means of transcanal endoscopy. We hypothesize a significant variability of this hidden region of the middle ear. Moreover, we believe that the minimal invasive, endoscopic access is suitable since angled scopes may be used to explore the region...
May 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28243017/comparison-of-the-efficacies-of-0-94-mm-and-double-silicone-tubes-for-treatment-of-canalicular-obstruction
#7
Seong Chan Choi, Hye Sun Choi, Jae Woo Jang, Sung Joo Kim, Jung Hye Lee
PURPOSE: To compare the clinical effects of the single wide-diameter bicanalicular silicone tube and the double bicanalicular silicone tube in endonasal dacryocystorhinostomy (DCR) with canalicular trephinization for canalicular obstruction. METHODS: We retrospectively reviewed the records of 121 patients with monocanalicular or common canalicular obstruction who had undergone endonasal DCR with random bicanalicular insertion of either double silicone tubes (insertion of two tubes into each canaliculus) or a single wide-diameter (0...
February 2017: Korean Journal of Ophthalmology: KJO
https://www.readbyqxmd.com/read/28242458/hepatotoxicity-and-metabolic-effects-of-cellular-extract-of-cyanobacterium-radiocystis-fernandoi-containing-microcystins-rr-and-yr-on-neotropical-fish-hoplias-malabaricus
#8
Marcelo Gustavo Paulino, Priscila Adriana Rossi, Francine Perri Venturini, Driele Tavares, Naiara Elisabete da Silva Souza, Marise Margareth Sakuragui, Gilberto Moraes, Ana Paula Terezan, João Batista Fernandes, Alessandra Giani, Marisa Narciso Fernandes
The toxicological effect of cellular extract of cyanobacterium Radiocystis fernandoi strain R28 containing RR and YR microcystins was analyzed in the fish Hoplias malabaricus with emphasis on the liver structure and energetic metabolism, after short-term exposure. Fish were intraperitoneally (i.p.) injected with 100 μg of equivalent MC-LR kg(-1) body mass containing in the cellular extract of R. fernandoi strain R28. Twelve and 96 h post-injection, the plasma, liver and white muscle were sampled for biochemical analyses and liver was also sampled for morphological analyses...
May 2017: Chemosphere
https://www.readbyqxmd.com/read/28239778/-minimally-invasive-bypass-surgery-for-nasolacrimal-duct-obstruction-transcanalicular-laser-assisted-dacryocystorhinostomy
#9
K R Koch, C Cursiefen, L M Heindl
BACKGROUND: In recent years, the minimally invasive surgical procedure of transcanalicular laser-assisted dacryocystorhinostomy (TKL-DCR) has gained importance in the treatment of primary acquired nasolacrimal duct obstructions (PANDO). OBJECTIVES: Surgical indications, functional success rates, potential advantages, and complications of TKL-DCR are presented and compared with the standard procedures external (EXT-DCR) and endonasal DCR (EN-DCR). METHODS: The study comprises a PubMed literature review and our own clinical results...
May 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/28207432/spontaneous-canalicular-plug-erosion-after-punctal-plug-placement
#10
Xinxin Zhang, Maya Bitar, Richard M Davis
PURPOSE: To describe a case of keratoconjunctivitis sicca treated with punctal plug placement with the first reported complication of subsequent plug erosion through the canaliculus and extrusion through the lid. METHODS: Punctal plugs were placed in a patient with Sjogren syndrome for treatment of keratoconjunctivitis sicca. More than 12 years later, the plug was noted to have eroded through the canaliculus and extruded through the conjunctiva and lid. RESULTS: The extruded plug was removed, and punctal cautery was performed on 2 other puncta with improved symptom control...
February 15, 2017: Cornea
https://www.readbyqxmd.com/read/28187010/imaging-the-canaliculops-with-ultrasound-biomicroscopy-and-anterior-segment-ocular-coherence-tomography
#11
Swati Singh, Mohammad Javed Ali, Hari Kumar Peguda, Milind N Naik
Canaliculops is a noninflammatory and noninfectious ectasia of the canaliculus with serous fluid accumulation. Currently, the etiology is uncertain. To the best of the authors' knowledge only 6 confirmed cases have been published earlier; however, the imaging features were not described. The authors report the ultrasound biomicroscopic and ocular coherence tomography features of a histopathologically proven canaliculops.
February 9, 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28155688/mathematically-modeling-fluid-flow-and-fluid-shear-stress-in-the-canaliculi-of-a-loaded-osteon
#12
Xiaogang Wu, Ningning Wang, Zhaowei Wang, Weilun Yu, Yanqin Wang, Yuan Guo, Weiyi Chen
BACKGROUND: Mechanical load-induced intraosseous pressure gradients may result in some fluid stimuli effects, such as fluid flow and fluid shear stress (FSS), which may enable bone cells to detect external mechanical signals. Interstitial bone fluid flow is known to occur in lacunar-canalicular porosity (PLC). METHODS: In order to characterize lacunar-canalicular fluid flow behavior, a hierarchical osteon system is developed. The osteon is modeled as a poroelastic annular cylinder with two types of impermeable boundary cases considered on its outer wall: one is elastic restrained (Case I), whereas the other is displacement confined (Case II)...
December 28, 2016: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28134632/posterior-medial-canthal-thermoplasty
#13
Kaveh Vahdani, Vladimir Theodor Thaller
PURPOSE: To describe a new, simple, quick, and minimally invasive surgical technique for managing medial canthal tendon laxity. METHODS: The technique works by creating a directed posterior lamellar scar. Sutures are preplaced in firm medial canthal tissue, and a triangular diathermy burn is made between this fixation point and the medial tarsal plate (sparing the canaliculus). This area is then plicated horizontally by bringing the preplaced sutures through the medial tarsal plate...
May 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28009407/an-easy-method-for-intraoperative-confirmation-of-lacrimal-sac-patency-in-endoscopic-dacryocystorhinostomy
#14
Fabio Pagella, Alessandro Pusateri, Elina Matti, Paolo Carena, Luis Quiroa, Elena Antoniazzi, Enzo Emanuelli
PURPOSE: Few studies have focused on the intranasal localization of the lacrimal sac during endoscopic dacryocystorhinostomy: landmarks in order to find the medial wall of the lacrimal sac have been described, but there is a lack of description of methods for the verification of the complete marsupialization of the lacrimal sac during surgery. In this report, we propose an easy and effective method for certain intraoperative identification of lacrimal sac. METHODS: A method in order to verify the effective marsupialization of the lacrimal sac is applied and described: to ensure that the opening of the sac in the nasal cavity is complete, the surgeon should identify the Rosenmuller valve, which is the end of the common canaliculus in the lacrimal sac...
May 11, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/27930424/characterizing-the-occluded-lacrimal-punctum-using-anterior-segment-optical-coherence-tomography
#15
Hannah M Timlin, Pearse A Keane, Geoffrey E Rose, Daniel G Ezra
PURPOSE: Epiphora is sometimes associated with an absent or occluded lacrimal drainage punctum (or puncta). This study uses noninvasive "enhanced depth" anterior segment optical coherence tomography (OCT) to give improved characterization and understanding of absent or fully occluded puncta and the underlying canaliculus. METHODS: Anterior segment spectral domain OCT images were collected prospectively from 9 lower puncta of 6 patients with epiphora and absent or fully occluded puncta, not amenable to dilation in clinic, to see if a canaliculus was visible on OCT imaging below the occluded punctum...
December 7, 2016: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27923925/biliary-secretion-of-quasi-enveloped-human-hepatitis-a-virus
#16
Asuka Hirai-Yuki, Lucinda Hensley, Jason K Whitmire, Stanley M Lemon
Hepatitis A virus (HAV) is an unusual picornavirus that is released from cells cloaked in host-derived membranes. These quasi-enveloped virions (eHAV) are the only particle type circulating in blood during infection, whereas only nonenveloped virions are shed in feces. The reason for this is uncertain. Hepatocytes, the only cell type known to support HAV replication in vivo, are highly polarized epithelial cells with basolateral membranes facing onto hepatic (blood) sinusoids and apical membranes abutting biliary canaliculi from which bile is secreted to the gut...
December 6, 2016: MBio
https://www.readbyqxmd.com/read/27889918/inner-ear-labyrinth-anatomy-of-monotremes-and-implications-for-mammalian-inner-ear-evolution
#17
Julia A Schultz, Ulrich Zeller, Zhe-Xi Luo
The monophyletic clade Monotremata branches early from the rest of the mammalian crown group in the Jurassic and members of this clade retain many ancestral mammalian traits. Thus, accurate and detailed anatomical descriptions of this group can offer unique insight into the early evolutionary history of Mammalia. In this study, we examine the inner ear anatomy of two extant monotremes, Ornithorhynchus anatinus and Tachyglossus aculeatus, with the primary goals of elucidating the ancestral mammalian ear morphology and resolving inconsistencies found within previous descriptive literature...
November 27, 2016: Journal of Morphology
https://www.readbyqxmd.com/read/27830552/demonstrating-potential-of-cell-therapy-for-wilson-s-disease-with-the-long-evans-cinnamon-rat-model
#18
Fadi Luc Jaber, Yogeshwar Sharma, Sanjeev Gupta
Wilson's disease (WD) is characterized by the inability to excrete copper (Cu) from the body with progressive tissue injury, especially in liver and brain. The molecular defect in WD concerns mutations in ATP7B gene leading to loss of Cu transport from the hepatocyte to the bile canaliculus. While drugs, e.g., Cu chelators, have been available for several decades, these must be taken lifelong, which can be difficult due to issues of compliance or side effects. Many individuals may require liver transplantation, which can also be difficult due to donor organ shortages...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27800254/canaliculitis-awareness
#19
Melike Balıkoğlu Yılmaz, Emine Şen, Ebru Evren, Ufuk Elgin, Pelin Yılmazbaş
OBJECTIVES: To evaluate the demographic characteristics, treatment, and results of patients with canaliculitis. MATERIALS AND METHODS: Medical records including the demographic characteristics, clinical findings, and treatment outcomes of patients diagnosed and treated for canaliculitis between September 2009 and March 2014 were analyzed retrospectively. RESULTS: The median age of the 7 canaliculitis patients consisting of 4 women and 3 men was 49 (range 8-58) years...
January 2016: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/27559621/conjunctival-cicatrizing-disease-presenting-with-lacrimal-obstruction
#20
Khami Satchi, Alan A McNab
Patients with conjunctival cicatrizing disease may develop lacrimal obstruction. Little is published on lacrimal obstruction as the presenting feature of otherwise asymptomatic cicatrizing conjunctival disease. The records of all patients presenting between 1994 and 2015 with lacrimal obstruction found to have cicatrizing conjunctival disease were reviewed. Demographic details, clinical findings, disease progression and treatment were analyzed. Thirty-five patients (25 female), aged 43-91 years (median 74, mean 71...
December 2016: Orbit
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