keyword
MENU ▼
Read by QxMD icon Read
search

Labyrinthitis

keyword
https://www.readbyqxmd.com/read/29351577/effects-of-excess-thromboxane-a2-on-placental-development-and-nutrient-transporters-in-a-mus-musculus-model-of-fetal-growth-restriction
#1
Karen J Gibbins, Katherine N Gibson-Corley, Ashley S Brown, Matthew Wieben, Richard C Law, Camille M Fung
Hypertensive disease of pregnancy (HDP) with placental insufficiency is the most common cause of fetal growth restriction (FGR) in the developed world. Despite the known negative consequences of HDP both to the mother and fetus, little is known about the longitudinal placental changes that occur as HDP progresses in pregnancy. This is because longitudinal sampling of human placentae during each gestation is impossible. Therefore, using a mouse model of thromboxane A2-analog infusion to mimic human HDP in the last trimester, we calculated placental efficiencies based on fetal and placental weights, quantified spongiotrophoblast and labyrinth thicknesses and vascular density within these layers, examined whether hypoxia signaling pathway involving vascular endothelial growth factor A (VEGFA) and its receptors (VEGFR1, VEGFR2) and matrix metalloproteinases (MMPs) contributed to vascular change, and examined nutrient transporter abundance including glucose transporters 1 and 3 (GLUT1, GLUT3), neutral amino acid transporters 1, 2, and 4 (SNAT1, SNAT2, and SNAT4), fatty acid transporters 2 and 4 (FATP2, FATP4) and fatty acid translocase (CD36) from embryonic day 15...
January 17, 2018: Biology of Reproduction
https://www.readbyqxmd.com/read/29337715/labyrinthine-sequestrum-a-case-report-and-review-of-the-literature
#2
Julie B Guerin, Diana L Vork, Lourdes Eguiguren, Alexander P Marston, Colin L W Driscoll, Matthew L Carlson, Nancy K Henry, John I Lane
OBJECTIVE: To report the presentation, diagnosis, management, and convalescence of labyrinthine sequestrum (LS) and summarize all previously published cases. PATIENT(S): Eleven-year-old female with LS. INTERVENTION(S): Multidisciplinary diagnostic evaluation and treatment. MAIN OUTCOME MEASURES: Imaging and laboratory findings, medical and surgical treatment. RESULTS: We describe a case of LS secondary to medically recalcitrant suppurative otitis media in an 11-year-old female and review all eight previously reported cases...
January 15, 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29336136/international-clinical-protocol-on-vestibular-disorders-dizziness
#3
Kostiantyn Trinus, Claus-Frenz Claussen
26-28 May at 43 Congress of Neurootological and Equilibriometric Society (Budapest, Hungary) International Clinical Protocol on Vestibular Disorders (Dizziness) being discussed and accepted as Consensus Document. Cochrane reports estimates that dizziness has prevalence of 22.9% in the last 12 months and an incidence of 3.1%. Only 1.8% of adults consulted a physician in the last 12 months. Cochrane reviews suggest that the evidence base for dizziness evaluation is weak, thus necessitates the creation of evidence-based document...
December 1, 2017: International Tinnitus Journal
https://www.readbyqxmd.com/read/29321064/the-role-of-ace2-angiotensin-1-7-and-mas1-receptor-axis-in-glucocorticoid-induced-intrauterine-growth-restriction
#4
Elham Ghadhanfar, Aseel Alsalem, Shaimaa Al-Kandari, Jumana Naser, Fawzi Babiker, Maie Al-Bader
BACKGROUND: Plasma and urine levels of the potent vasodilator Ang-(1-7) are elevated in mid and late pregnancy and are correlated with elevated placental angiogenesis, fetal blood flow, and rapid fetal growth. We hypothesized that Ang-(1-7), its receptor (Mas1) and the enzymes involved in Ang-(1-7) production (ACE2 and Membrane metallo-endopeptidase; MME) are down regulated in response to glucocorticoid administration contributing to IUGR. METHODS: Pregnant female Sprague-Dawley rats were injected with dexamethasone (DEX; 0...
December 29, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29317656/conservation-of-pattern-as-a-tool-for-inference-on-spatial-snapshots-in-ecological-data
#5
Michael A Irvine, James C Bull, Matt J Keeling
As climate change and other anthropogenic factors increase the uncertainty of vegetation ecosystem persistence, the ability to rapidly assess their dynamics is paramount. Vegetation and sessile communities form a variety of striking regular spatial patterns such as stripes, spots and labyrinths, that have been used as indicators of ecosystem current state, through qualitative analysis of simple models. Here we describe a new method for rigorous quantitative estimation of biological parameters from a single spatial snapshot...
January 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29315186/the-progressive-nature-of-meni%C3%A3-re-s-disease-stress-projections-and-lesion-analysis
#6
Daniel J Pender
HYPOTHESIS: An engineering model of the labyrinth can provide a mechanism that accounts for the pattern of lesion development observed in Menière's disease. BACKGROUND: Membrane lesions in Menière's disease can occur in virtually every part of the membranous labyrinth. How these lesions are induced is unclear and their mode of distribution uncertain. Pressure induced stress in the membranous labyrinth may play a mechanistic role in lesion formation and distribution...
February 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29305462/type-i-interferons-instigate-fetal-demise-after-zika-virus-infection
#7
Laura J Yockey, Kellie A Jurado, Nitin Arora, Alon Millet, Tasfia Rakib, Kristin M Milano, Andrew K Hastings, Erol Fikrig, Yong Kong, Tamas L Horvath, Scott Weatherbee, Harvey J Kliman, Carolyn B Coyne, Akiko Iwasaki
Zika virus (ZIKV) infection during pregnancy is associated with adverse fetal outcomes, including microcephaly, growth restriction, and fetal demise. Type I interferons (IFNs) are essential for host resistance against ZIKV, and IFN-α/β receptor (IFNAR)-deficient mice are highly susceptible to ZIKV infection. Severe fetal growth restriction with placental damage and fetal resorption is observed after ZIKV infection of type I IFN receptor knockout (Ifnar1-/-) dams mated with wild-type sires, resulting in fetuses with functional type I IFN signaling...
January 5, 2018: Science Immunology
https://www.readbyqxmd.com/read/29283914/cochlear-implantation-after-partial-or-subtotal-cochleoectomy-for-intracochlear-schwannoma-removal-a-technical-report
#8
Stefan K Plontke, Sabrina Kösling, Torsten Rahne
OBJECTIVE: To describe the technique for surgical tumor removal, cochlear implant (CI) electrode placement and reconstruction of the surgical defect in patients with intracochlear schwannomas. STUDY DESIGN: Retrospective case review. SETTING: Tertiary referral center. PATIENTS: Ten patients (five men, five women, mean age 48 ± 12 yr) with profound or severe to profound hearing loss due to intralabyrinthine schwannomas with intracochlear location...
December 27, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/29279723/diagnostics-and-therapy-of-vestibular-schwannomas-an-interdisciplinary-challenge
#9
REVIEW
Steffen Rosahl, Christopher Bohr, Michael Lell, Klaus Hamm, Heinrich Iro
Vestibular schwannomas (VS) expand slowly in the internal auditory canal, in the cerebellopontine angle, inside the cochlear and the labyrinth. Larger tumors can displace and compress the brainstem. With an annual incidence of 1:100,000 vestibular schwannoma represent 6-7% of all intracranial tumors. In the cerebellopontine angle they are by far the most neoplasm with 90% of all lesions located in this region. Magnetic resonance imaging (MRI), audiometry, and vestibular diagnostics are the mainstays of the clinical workup for patients harboring tumors...
2017: GMS Current Topics in Otorhinolaryngology, Head and Neck Surgery
https://www.readbyqxmd.com/read/29279722/current-diagnostic-procedures-for-diagnosing-vertigo-and-dizziness
#10
REVIEW
Leif Erik Walther
Vertigo is a multisensory syndrome that otolaryngologists are confronted with every day. With regard to the complex functions of the sense of orientation, vertigo is considered today as a disorder of the sense of direction, a disturbed spatial perception of the body. Beside the frequent classical syndromes for which vertigo is the leading symptom (e.g. positional vertigo, vestibular neuritis, Menière's disease), vertigo may occur as main or accompanying symptom of a multitude of ENT-related diseases involving the inner ear...
2017: GMS Current Topics in Otorhinolaryngology, Head and Neck Surgery
https://www.readbyqxmd.com/read/29277248/communication-pathways-to-and-from-the-inner-ear-and-their-contributions-to-drug-delivery
#11
REVIEW
Alec N Salt, Keiko Hirose
The environment of the inner ear is highly regulated in a manner that some solutes are permitted to enter while others are excluded or transported out. Drug therapies targeting the sensory and supporting cells of the auditory and vestibular systems require the agent to gain entry to the fluid spaces of the inner ear, perilymph or endolymph, which surround the sensory organs. Access to the inner ear fluids from the vasculature is limited by the blood-labyrinth barriers, which include the blood-perilymph and blood-strial barriers...
December 19, 2017: Hearing Research
https://www.readbyqxmd.com/read/29272988/the-influence-of-the-subarcuate-artery-in-the-superior-semicircular-canal-dehiscence-and-its-frequency-on-stillbirths-illustrative-cases-and-systematic-review
#12
Gabriela Pereira Bom Braga, Jack H Noble, Eloisa Maria Mello Santiago Gebrim, Robert F Labadie, Ricardo Ferreira Bento
Literature describes that on the 25th gestational week the labyrinth is fully formed and with adult size. However, recent studies have shown that the cranial and labyrinth development continues until 3 years of age. OBJECTIVES: To demonstrate through tomographic study the frequency of semicircular canal dehiscence on nine specimens of stillbirths between 32 and 40 weeks and, through literature review, present another possible etiology for its cause. METHODS: Tomographic study of the temporal bone of 9 specimens of stillbirths between 32 and 40 weeks...
December 22, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/29259611/a-structurally-specialized-uniform-wall-layer-is-essential-for-constructing-wall-ingrowth-papillae-in-transfer-cells
#13
Xue Xia, Hui-Ming Zhang, Christina E Offler, John W Patrick
Transfer cells are characterized by wall labyrinths with either a flange or reticulate architecture. A literature survey established that reticulate wall ingrowth papillae ubiquitously arise from a modified component of their wall labyrinth, termed the uniform wall layer; a structure absent from flange transfer cells. This finding sparked an investigation of the deposition characteristics and role of the uniform wall layer using a Vicia faba cotyledon culture system. On transfer of cotyledons to culture, their adaxial epidermal cells spontaneously trans-differentiate to a reticulate architecture comparable to their abaxial epidermal transfer cell counterparts formed in planta...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29238670/specific-organ-targeted-vestibular-physiotherapy-the-pivot-in-the-contemporary-management-of-vertigo-and-imbalance
#14
EDITORIAL
Anirban Biswas, Bibhas Barui
Introduction: Advancements in our understanding of vestibular physiology and how it is changes in different diseases have established that of the three therapeutic approaches to treat disorders of the vestibular system viz. pharmacotherapy, surgery and physical therapy, it is the later i.e., physical therapy which is the most efficacious modality in the management of balance disorders. The futility of vestibular sedatives in the correction of vestibular disorders and in the restoration of balance and the very limited role of surgery has now been recognised...
December 2017: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/29234338/transcript-profiling-identifies-gene-cohorts-controlled-by-each-signal-regulating-trans-differentiation-of-epidermal-cells-of-vicia-faba-cotyledons-to-a-transfer-cell-phenotype
#15
Hui-Ming Zhang, Simon L Wheeler, Xue Xia, Kim Colyvas, Christina E Offler, John W Patrick
Transfer cells (TCs) support high rates of membrane transport of nutrients conferred by a plasma membrane area amplified by lining a wall labyrinth comprised of an uniform wall layer (UWL) upon which intricate wall ingrowth (WI) papillae are deposited. A signal cascade of auxin, ethylene, extracellular hydrogen peroxide (H2O2) and cytosolic Ca2+ regulates wall labyrinth assembly. To identify gene cohorts regulated by each signal, a RNA- sequencing study was undertaken using Vicia faba cotyledons. When cotyledons are placed in culture, their adaxial epidermal cells spontaneously undergo trans-differentiation to epidermal TCs (ETCs)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29228990/mannitol-and-the-blood-labyrinth-barrier
#16
Trung N Le, Brian W Blakley
BACKGROUND: Characterization of the blood labyrinth barrier (BLB) is extremely important to determine whether the BLB can be manipulated pharmacologically. However, experiments to investigate the BLB are technically difficult to perform. In this report, we demonstrated a unique method of controlling the BLB, and established the pharmacokinetics of gentamicin in perilymph, cerebrospinal fluid (CSF) and blood with and without mannitol. STUDY DESIGN: Controlled animal research project...
December 11, 2017: Journal of Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/29225027/evolution-of-the-sauropterygian-labyrinth-with-increasingly-pelagic-lifestyles
#17
James M Neenan, Tobias Reich, Serjoscha W Evers, Patrick S Druckenmiller, Dennis F A E Voeten, Jonah N Choiniere, Paul M Barrett, Stephanie E Pierce, Roger B J Benson
Sauropterygia, a successful clade of marine reptiles abundant in aquatic ecosystems of the Mesozoic, inhabited nearshore to pelagic habitats over >180 million years of evolutionary history [1]. Aquatic vertebrates experience strong buoyancy forces that allow movement in a three-dimensional environment, resulting in structural convergences such as flippers and fish-like bauplans [2, 3], as well as convergences in the sensory systems. We used computed tomographic scans of 19 sauropterygian species to determine how the transition to pelagic lifestyles influenced the evolution of the endosseous labyrinth, which houses the vestibular sensory organ of balance and orientation [4]...
December 18, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/29214575/health-technology-assessment-and-appraisal-of-therapies-for-rare-diseases
#18
Georgi Iskrov, Tsonka Miteva-Katrandzhieva, Rumen Stefanov
Innovative rare disease therapies and health technology assessment (HTA) share a lot of similarities. Both represent cases of interaction of epidemiology and health economics. Both are relatively new topics in public health practice. And both pose a lot of challenges to rare disease stakeholders who are currently looking for tools to support the timely access to innovative treatments while putting budget spending in order. This is why optimisation of assessment and appraisal of new rare disease therapies is a fundamental issue in rare disease health policy...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29194713/intraspecific-variation-in-the-domestic-cat-bony-labyrinth-revealed-by-different-measurement-techniques
#19
Rico Schellhorn
The knowledge of intraspecific variation is important to make assumptions on an interspecific level. To study intraspecific variation in the bony labyrinth morphology of the domestic cat, eleven specimens of Felis silvestris catus and two additional subspecies (F. s. lybica, F. s. ornata) were investigated. The sample comprises skulls of adult males and females, as well as juvenile cats. Each bony labyrinth endocast was virtually reconstructed based on µCT scans. To estimate the radius of curvature of each inner ear semicircular canal, three different approaches were tested...
December 1, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/29190293/morphological-correlation-between-caloric-tests-and-vestibular-hydrops-in-m%C3%A3-ni%C3%A3-re-s-disease-using-intravenous-gd-enhanced-inner-ear-mri
#20
Ji Eun Choi, Yi-Kyung Kim, Young Sang Cho, Kieun Lee, Hyun Woo Park, Sung Hoon Yoon, Hyung-Jin Kim, Won-Ho Chung
The purpose of this study was to prove the hypothesis that caloric response in Ménière's disease (MD) is reduced by hydropic expansion of the vestibular labyrinth, not by vestibular hypofunction, by evaluating the correlation morphologically using an intravenous Gadolinium (IV-Gd) inner ear MRI. In study I, the prevalence of abnormal video Head Impulse Test (vHIT) results among the patients with definite unilateral MD (n = 24) and vestibular neuritis (VN) (n = 22) were investigated. All patients showed abnormal canal paresis (CP) (> 26%) on caloric tests...
2017: PloS One
keyword
keyword
61634
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"