keyword
MENU ▼
Read by QxMD icon Read
search

Labyrinthitis

keyword
https://www.readbyqxmd.com/read/28526177/two-cell-populations-participate-in-clearance-of-damaged-hair-cells-from-the-sensory-epithelia-of-the-inner-ear
#1
REVIEW
Keiko Hirose, Mark A Rutherford, Mark E Warchol
The cochlea and the vestibular organs are populated by resident macrophages, but their role in inner ear maintenance and pathology is not entirely clear. Resident macrophages in other organs are responsible for phagocytosis of injured or infected cells, and it is likely that macrophages in the inner ear serve a similar role. Hair cell injury causes macrophages to accumulate within proximity of damaged regions of the inner ear, either by exiting the vasculature and entering the labyrinth or by the resident macrophages reorganizing themselves through local movement to the areas of injury...
April 28, 2017: Hearing Research
https://www.readbyqxmd.com/read/28523740/new-data-about-semicircular-canal-morphology-and-locomotion-in-modern-hominoids
#2
Anne Le Maître, Philipp Schuetz, Patrick Vignaud, Michel Brunet
The labyrinth has two functional parts: the cochlea for audition and the vestibular system for equilibrioception. In the latter, the semicircular ducts and the otolithic organs are sensitive to rotational and linear accelerations of the head, respectively. The labyrinthine morphology influences perception accuracy, hence the adaptation to a specific locomotor pattern. The aim of this study is to determine the relationship between locomotion and semicircular canal morphology using geometric morphometrics, and to explain these links with existing functional models...
May 19, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28523122/sex-differences-in-rat-placental-development-from-pre-implantation-to-late-gestation
#3
J I Kalisch-Smith, D G Simmons, M Pantaleon, K M Moritz
BACKGROUND: A male fetus is suggested to be more susceptible to in utero and birth complications. This may be due in part to altered morphology or function of the XY placenta. We hypothesised that sexual dimorphism begins at the blastocyst stage with sex differences in the progenitor trophectoderm (TE) and its derived trophoblast lineages, as these cells populate the majority of cell types within the placenta. We investigated sex-specific differences in cell allocation in the pre-implantation embryo and further characterised growth and gene expression of the placental compartments from the early stages of the definitive placenta through to late gestation...
2017: Biology of Sex Differences
https://www.readbyqxmd.com/read/28516487/the-petrosal-and-bony-labyrinth-of-diplobune-minor-an-enigmatic-artiodactyla-from-the-oligocene-of-western-europe
#4
Maeva J Orliac, Ricardo Araújo, Fabrice Lihoreau
Anoplotheriinae are Paleogene European artiodactyls that present a unique postcranial morphology with a tridactyl autopodium and uncommon limb orientation. This peculiar morphology led to various hypotheses regarding anoplotheriine locomotion from semiaquatic to partly arboreal or partly bipedal. The petrosal bone, housing the organs of balance, and hearing, offers complementary information to postcranial morphology on the ecology of this uncommon artiodactyl. Here, we investigate the middle ear and bony labyrinth of the small anoplotheriine Diplobune minor based on four specimens from the Early Oligocene locality of Itardies (Quercy, France)...
May 17, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28516350/evaluation-of-vascular-effect-of-arsenic-using-in-vivo-assays
#5
Bharat Patel, Rajat Das, Anil Gautam, Mugdha Tiwari, Sukhdev Acharya, Sunil Kumar
Arsenic (As) is an abundant toxicant present in groundwater and soil in various parts of the world including eastern part of India. The epidemiological studies have shown that arsenic exposure is linked to developmental defects and miscarriage. Placenta is known to utilize vasculogenesis to develop its vasculature circulation. The effects of four different doses of sodium meta-arsenite (0, 10, 20, 75, and 150 ppm) were assessed on the vascular structure using two different in vivo models, i.e., Matrigel and chorioallantoic membrane (CAM) assay...
May 17, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28487024/co-localization-of-microsomal-prostaglandin-e-synthase-1-with-cyclooxygenase-1-in-layer-ii-of-murine-placental-syncytiotrophoblasts
#6
Mai Inagaki, Tomohiro Nishimura, Shin-Ichi Akanuma, Takeo Nakanishi, Masanori Tachikawa, Ikumi Tamai, Ken-Ichi Hosoya, Emi Nakashima, Masatoshi Tomi
The placenta is an organ that secretes prostaglandin (PG) E2 into the fetal-placental circulation to regulate both vascular tone and remodeling of the fetal ductus arteriosus. Placental PGE2 synthesis might be mediated by microsomal PGE synthase-1 (mPGES-1), in addition to cyclooxygenase (COX) isoforms. Thus, the purpose of this study is to clarify the temporal and spatial expression patterns of mPGES-1, together with COX-1 and COX-2, in murine placenta. We found that mPGES-1 and COX-1 protein levels continuously increased in the placental labyrinth from gestational day (GD) 13...
May 2017: Placenta
https://www.readbyqxmd.com/read/28485288/the-influence-of-the-body-mass-index-bmi-on-selected-parameters-of-the-coagulation-system-in-patients-with-disorders-of-the-balance-system-taking-oral-contraceptives
#7
Marzena Bielińska, Joanna Urbaniak, Krzysztof Kuśmierczyk, Jurek Olszewski, Piotr Pietkiewicz
INTRODUCTION: The objective of the paper is to evaluate the influence of the body mass index (BMI) on selected parameters of the coagulation system in patients with disorders of the balance system taking oral contraceptives. MATERIAL AND METHODS: 105 young women participated in the study who were divided into 2 groups. Group I: 52 women disorders of the balance system taking hormonal contraceptives for at least 2 months, between the age of 20-49; Group II: 53 women with no disorders of the balance system taking hormonal contraceptives for at least 2 months, between the age of 18-40...
July 10, 2016: Otolaryngologia Polska
https://www.readbyqxmd.com/read/28483233/high-prevalence-of-abnormalities-on-ct-and-mr-imaging-in-children-with-unilateral-sensorineural-hearing-loss-irrespective-of-age-or-degree-of-hearing-loss
#8
E A van Beeck Calkoen, E Sanchez Aliaga, P Merkus, C F Smit, J M van de Kamp, M F Mulder, S T Goverts, E F Hensen
OBJECTIVE: Evaluation of causal abnormalities identified on CT and MR imaging in children with unilateral sensorineural hearing loss (USNHL), and the association with age and severity of hearing loss. STUDY DESIGN: Retrospective cohort study. SETTING: Tertiary referral otology/audiology center. PATIENTS AND DIAGNOSTIC INTERVENTIONS: 102 children diagnosed with USNHL between 2006 and 2016 were included. They underwent CT and/or MR imaging for the evaluation of the etiology of their hearing loss...
June 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28470420/numerical-modeling-of-the-cupular-displacement-and-motion-of-otoconia-particles-in-a-semicircular-canal
#9
Tijana Djukic, Nenad Filipovic
Balance is achieved and maintained by a balance system called a labyrinth that is composed of three semicircular canals and the otolith organs that sense linear gravity and acceleration. Within each semicircular canal, there is a gelatinous structure called the cupula, which is deformed under the influence of the surrounding endolymph. One of the balance disorders is benign paroxysmal positional vertigo, and one of the pathological conditions that have been identified as possible causes of this syndrome is canalithiasis-disturbance of the endolymph flow and cupular displacement caused by the free-moving otoconia particles within the lumen of the canal...
May 3, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28449168/mri-sequences-in-head-neck-radiology-state-of-the-art
#10
Gerlig Widmann, Benjamin Henninger, Christian Kremser, Werner Jaschke
Background Magnetic resonance imaging (MRI) has become an essential imaging modality for the evaluation of head & neck pathologies. However, the diagnostic power of MRI is strongly related to the appropriate selection and interpretation of imaging protocols and sequences. The aim of this article is to review state-of-the-art sequences for the clinical routine in head & neck MRI and to describe the evidence for which medical question these sequences and techniques are useful. Method Literature review of state-of-the-art sequences in head & neck MRI...
May 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28425611/a-simple-assessment-tool-for-evaluation-of-cadaveric-temporal-bone-dissection
#11
Sarah E Mowry, Erika Woodson, Samuel Gubbels, Matt Carfrae, Marlan R Hansen
EDUCATIONAL OBJECTIVE: Objective metrics in skilled-based educational courses allow trainees and instructors to assess performance and monitor progress. The objective is to validate a concise, easy-to-use instrument for assessment of resident skill during a timed cadaveric temporal-bone (CTB) dissection. STUDY DESIGN: Retrospective analysis. METHODS: An instrument was developed to assess resident performance on a yearly timed microdissection of CTB...
April 20, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28424657/magnetic-vestibular-stimulation-mvs-as-a-technique-for-understanding-the-normal-and-diseased-labyrinth
#12
REVIEW
Bryan K Ward, Jorge Otero-Millan, Prem Jareonsettasin, Michael C Schubert, Dale C Roberts, David S Zee
Humans often experience dizziness and vertigo around strong static magnetic fields such as those present in an MRI scanner. Recent evidence supports the idea that this effect is the result of inner ear vestibular stimulation and that the mechanism is a magnetohydrodynamic force (Lorentz force) that is generated by the interactions between normal ionic currents in the inner ear endolymph and the strong static magnetic field of MRI machines. While in the MRI, the Lorentz force displaces the cupula of the lateral and anterior semicircular canals, as if the head was rotating with a constant acceleration...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28417110/kawasaki-disease-and-labyrinthitis-an-underdiagnosed-complication
#13
Kyu Yeun Kim, Ki Hwan Kim, Yoon Ah Park, Young Joon Seo
Sensorineural hearing loss (SNHL) that is seldom cited as a Kawasaki disease (KD) complication is known as an additional, potentially severe, and frequently irreversible sequel. Furthermore the vestibular functions of KD have been underestimated and it could be an important complication combined with SNHL in KD. We described a case that a 4 year-old boy who developed vestibular loss with SNHL has recovered successfully with a combined treatment.
April 2017: Journal of Audiology & Otology
https://www.readbyqxmd.com/read/28414277/waardenburg-syndrome-an-unusual-indication-of-cochlear-implantation-experienced-in-11-patients
#14
Feda Bayrak, Tolgahan Çatlı, Görkem Atsal, Taşkın Tokat, Levent Olgun
OBJECTIVE: The aim of this study was to present the surgical findings of children with Waardenburg syndrome (WS) and investigate speech development after cochlear implantation in this unique group of patients. MATERIALS AND METHODS: A retrospective chart review of the patients diagnosed with WS and implanted between 1998 and 2015 was performed. Categories of auditory performance (CAP) test were used to assess the auditory skills of these patients. CAP is a nonlinear hierarchical scale used to rate a child's developing auditory abilities...
April 17, 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/28413721/aspects-of-gorgonopsian-paleobiology-and-evolution-insights-from-the-basicranium-occiput-osseous-labyrinth-vasculature-and-neuroanatomy
#15
Ricardo Araújo, Vincent Fernandez, Michael J Polcyn, Jörg Fröbisch, Rui M S Martins
Synapsida, the clade including therapsids and thus also mammals, is one of the two major branches of amniotes. Organismal design, with modularity as a concept, offers insights into the evolution of therapsids, a group that experienced profound anatomical transformations throughout the past 270 Ma, eventually leading to the evolution of the mammalian bauplan. However, the anatomy of some therapsid groups remains obscure. Gorgonopsian braincase anatomy is poorly known and many anatomical aspects of the brain, cranial nerves, vasculature, and osseous labyrinth, remain unclear...
2017: PeerJ
https://www.readbyqxmd.com/read/28408764/fossil-climbing-perch-and-associated-plant-megafossils-indicate-a-warm-and-wet-central-tibet-during-the-late-oligocene
#16
Feixiang Wu, Desui Miao, Mee-Mann Chang, Gongle Shi, Ning Wang
Understanding the Tibetan Plateau's palaeogeography and palaeoenvironment is critical for reconstructing Asia's climatic history; however, aspects of the plateau's uplift history remain unclear. Here, we report a fossil biota that sheds new light on these issues. It comprises a fossil climbing perch (Anabantidae) and a diverse subtropical fossil flora from the Chattian (late Oligocene) of central Tibet. The fish, Eoanabas thibetana gen. et sp. nov., is inferred to be closely related to extant climbing perches from tropical lowlands in south Asia and sub-Saharan Africa...
April 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28402512/defective-trophoblast-invasion-underlies-fetal-growth-restriction-and-pre-eclampsia-like-symptoms-in-the-stroke-prone-spontaneously-hypertensive-rat
#17
G Barrientos, M Pussetto, M Rose, A C Staff, S M Blois, J E Toblli
STUDY QUESTION: What is the impact of chronic hypertension on placental development, fetal growth and maternal outcome in the stroke-prone spontaneously hypertensive rat (SHRSP)? SUMMARY ANSWER: SHRSP showed an impaired remodeling of the spiral arteries and abnormal pattern of trophoblast invasion during placentation, which were associated with subsequent maternal glomerular injury and increased baseline hypertension as well as placental insufficiency and asymmetric fetal growth restriction...
April 11, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28390093/understanding-the-role-of-the-gut-ecosystem-in-diabetes-mellitus
#18
REVIEW
Wanping Aw, Shinji Fukuda
Diabetes mellitus is a type of metabolic disorder patients are unable to regulate glycemia. It is currently worldwide public health issue and is a burden to society due to its disabling and common complications. Diabetes is multi-factorial and also induces the onset of other diseases. In this report, we will review the labyrinth encompassing the gut microbiota and gut microbiota derived metabolites on type 1 diabetes and type 2 diabetes pathogenesis. There has been exceptional improvements in Deoxyribonucleic acid (DNA) sequencing and mass spectrometry technologies throughout these years and this has allowed the comprehensive collection of information on our unique gut ecosystem...
April 8, 2017: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/28386500/diagnostic-bedside-vestibuloocular-reflex-evaluation-in-the-setting-of-a-false-negative-fistula-test-in-cholesteatoma-of-the-middle-ear
#19
Ricardo D'Albora, Ligia Silveira, Sergio Carmona, Nicolas Perez-Fernandez
Background. False negative fistula testing in patients with chronic suppurative otitis media is a dilemma when proceeding to surgery. It is imperative to rule out a dead labyrinth or a mass effect secondary to the cholesteatoma in an otherwise normally functioning inner ear. We present a case series of three patients in whom a bedside vestibuloocular reflex (VOR) evaluation using a head impulse test was used successfully for further evaluation prior to surgery. Results. In all three cases with a false negative fistula test we were able to further evaluate at the bedside and were not only able to register the abnormal VOR but also localize its deterioration to a particular semicircular canal eroded by the fistula...
2017: Case Reports in Otolaryngology
https://www.readbyqxmd.com/read/28386414/a-morphometric-analysis-of-vegetation-patterns-in-dryland-ecosystems
#20
Luke Mander, Stefan C Dekker, Mao Li, Washington Mio, Surangi W Punyasena, Timothy M Lenton
Vegetation in dryland ecosystems often forms remarkable spatial patterns. These range from regular bands of vegetation alternating with bare ground, to vegetated spots and labyrinths, to regular gaps of bare ground within an otherwise continuous expanse of vegetation. It has been suggested that spotted vegetation patterns could indicate that collapse into a bare ground state is imminent, and the morphology of spatial vegetation patterns, therefore, represents a potentially valuable source of information on the proximity of regime shifts in dryland ecosystems...
February 2017: Royal Society Open Science
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"