keyword
MENU ▼
Read by QxMD icon Read
search

temporal bone

keyword
https://www.readbyqxmd.com/read/29352112/direct-cell-cell-contact-between-mature-osteoblasts-and-osteoclasts-dynamically-controls-their-functions-in-vivo
#1
Masayuki Furuya, Junichi Kikuta, Sayumi Fujimori, Shigeto Seno, Hiroki Maeda, Mai Shirazaki, Maki Uenaka, Hiroki Mizuno, Yoriko Iwamoto, Akito Morimoto, Kunihiko Hashimoto, Takeshi Ito, Yukihiro Isogai, Masafumi Kashii, Takashi Kaito, Shinsuke Ohba, Ung-Il Chung, Alexander C Lichtler, Kazuya Kikuchi, Hideo Matsuda, Hideki Yoshikawa, Masaru Ishii
Bone homeostasis is regulated by communication between bone-forming mature osteoblasts (mOBs) and bone-resorptive mature osteoclasts (mOCs). However, the spatial-temporal relationship and mode of interaction in vivo remain elusive. Here we show, by using an intravital imaging technique, that mOB and mOC functions are regulated via direct cell-cell contact between these cell types. The mOBs and mOCs mainly occupy discrete territories in the steady state, although direct cell-cell contact is detected in spatiotemporally limited areas...
January 19, 2018: Nature Communications
https://www.readbyqxmd.com/read/29350100/transorbital-doppler-with-carotid-siphon-monitoring-detects-right-to-left-shunt-effectively
#2
Zhihui Duan, Zhiyuan Yang, Binbin Song, Congmin Ma, Yan Li, Yanjiao Du, Dandan Shang, Shao Li, Jiyu Lou
Background Transtemporal Doppler (TTD) with middle cerebral artery (MCA) is widely used for right-to-left shunt (RLS) detection. However, an alternative method for patients without suitable temporal bone windows should be established. The present study prospectively evaluated the effectiveness of transorbital Doppler (TOD) with carotid siphon (CS) monitoring in detecting RLS. Methods A total of 357 subjects with sufficient temporal bone windows underwent simultaneous TTD with MCA and TOD with CS. After injection of microbubbles, the numbers of artificial high-intensity signals were recorded at rest and after Valsalva maneuver...
January 19, 2018: Neurological Research
https://www.readbyqxmd.com/read/29348276/congenital-tuberculosis-presenting-as-otorrhoea-in-a-preterm-infant
#3
Jose Carlos Aldana-Aguirre, Hamdy El-Hakim, Ernest Phillipos, Marc-Antoine Landry
A premature infant of 25 weeks' gestational age presented at 8 weeks after birth with otorrhoea from the left ear. Following a course of topical and systemic antibiotics, the patient deteriorated developing facial nerve paralysis and cervical lymphadenitis. Contrast-enhanced CT and MRI of the head showed a destructive process of the left temporal bone. These findings prompted the clinicians to send swabs from the purulent discharge from the ear for acid-fast bacilli stain. Furthermore, surgical exploration and debridement were undertaken...
January 17, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29342055/benefit-of-preoperative-temporal-bone-ct-for-atraumatic-cochlear-implantation
#4
Alexandre Karkas, Nicolas Menjot de Champfleur, Alain Uziel, Michel Mondain, Jean-Luc Puel, Frédéric Venail
HYPOTHESIS: Evaluate the benefit of preoperative surgical planning using computed tomography (CT) for atraumatic cochlear implantation. BACKGROUND: The surgical technique has a direct impact on hearing and structure preservation. Much interest has been given to depth of electrode insertion. We focused on electrode diameter depending on exposure of round window membrane (RWM) as calculated on preoperative CT. METHODS: Measurements were calculated radiologically and anatomically on 10 temporal bones...
January 16, 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29342046/large-facial-nerve-schwannoma-with-extensive-temporal-bone-destruction
#5
Joseph Choi Park, M Reza Taheri, Ashkan Monfared
No abstract text is available yet for this article.
January 16, 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29342040/unilateral-sensorineural-hearing-loss-presenting-with-bilateral-temporal-bone-lesions
#6
Mark Sakai, Cameron C Wick, Joe Walter Kutz
No abstract text is available yet for this article.
January 16, 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29342039/an-optimal-partial-ossicular-prosthesis-should-connect-both-to-the-tympanic-membrane-and-malleus-a-temporal-bone-study-using-laser-doppler-vibrometry
#7
Anders Niklasson, Kilian Gladiné, Anton Rönnblom, Magnus von Unge, Joris Dirckx, Krister Tano
OBJECTIVE: To compare stapes vibrations in different partial ossicular replacement prosthesis (PORP) applications. METHODS: Stapedial vibrations were measured on fresh frozen human temporal bones with laser Doppler vibrometry. Eight different types of common ossiculoplasty methods were compared regarding recovery of stapes vibrations in relation with the normal ossicular chain. The PORPs were divided into three groups: 1) PORPs with the lateral contact only with the tympanic membrane, 2) PORPs with lateral contact only to the malleus handle, and 3) PORPs with lateral contact with both the malleus handle and the tympanic membrane...
January 16, 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29342037/preservation-of-cells-of-the-organ-of-corti-and-innervating-dendritic-processes-following-cochlear-implantation-in-the-human-an-immunohistochemical-study
#8
Takefumi Kamakura, Jennifer T O'Malley, Joseph B Nadol
HYPOTHESIS: This study evaluates the degree of preservation of hair cells, supporting cells, and innervating dendritic processes after cochlear implantation in the human using immunohistochemical methods. BACKGROUND: Surgical insertion of a cochlear implant electrode induces various pathologic changes within the cochlea including insertional trauma, foreign body response, inflammation, fibrosis, and neo-osteogenesis. These changes may result in loss of residual acoustic hearing, adversely affecting the use of hybrid implants, and may result in loss of putative precursor cells, limiting the success of future regenerative protocols...
January 16, 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29340754/preoperative-evaluation-of-cochlear-implantation-through-the-round-window-membrane-in-the-facial-recess-using-high-resolution-computed-tomography
#9
Li-Hong Xie, Jie Tang, Wen-Jie Miao, Xiang-Long Tang, Heng Li, An-Zhou Tang
PURPOSE: We evaluated the risk of cochlear implantation through the round window membrane in the facial recess through a preoperative analysis of the angle between the facial nerve-round window and the cranial midline using high-resolution temporal bone CT. METHODS: Temporal bone CT films of 176 patients with profound sensorineural hearing loss at our hospital from 2013 to 2015 were reviewed. The preoperative temporal bone CT scans of the patients were retrospectively analysed...
January 16, 2018: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/29339029/degree-of-tinnitus-improvement-with-stapes-surgery-a-review
#10
Aliciane Mota G Cavalcante, Isabella Monteiro de Castro Silva, Bianca Jessica Neves, Carlos Augusto Oliveira, Fayez Bahmad
INTRODUCTION: Otospongiosis is temporal bone osteodystrophy, characterized by disordered bone resorption and neoformation in genetically predisposed individuals. Clinically, otospongiosis is characterized by progressive conductive and/or mixed hearing loss and by tinnitus. OBJECTIVE: A review of the last two decades of publications that report the degree of tinnitus improvement with stapes surgery. METHODS: 125 articles published in the last 20 years mentioning the relationship between otosclerosis and tinnitus...
January 5, 2018: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/29337715/labyrinthine-sequestrum-a-case-report-and-review-of-the-literature
#11
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/29337200/mimicking-the-3d-biology-of-osteochondral-tissue-with-microfluidic-based-solutions-breakthroughs-towards-boosting-drug-testing-and-discovery
#12
REVIEW
Mariana R Carvalho, Rui Luís Reis, Joaquim Miguel Oliveira
The development of tissue-engineering (TE) solutions for osteochondral (OC) regeneration has been slowed by technical hurdles related to the recapitulation of their complex and hierarchical architecture. OC defects refer to damage of both the articular cartilage and the underlying subchondral bone. To repair an OC tissue defect, the complexity of the bone and cartilage must be considered. To help achieve this, microfluidics is converging with TE approaches to provide new treatment possibilities. Microfluidics uses precise micrometer-to-millimeter-scale fluid flows to achieve high-resolution and spatial and/or temporal control of the cell microenvironment, providing powerful tools for cell culturing...
January 11, 2018: Drug Discovery Today
https://www.readbyqxmd.com/read/29335001/different-clinical-presentation-and-management-of-temporal-bone-fibrous-dysplasia-in-children
#13
REVIEW
Józef Mierzwiński, Justyna Kosowska, Justyna Tyra, Karolina Haber, Maria Drela, Dariusz Paczkowski, Paweł Burduk
BACKGROUND: Fibrous dysplasia is a slowly progressive benign fibro-osseous disorder that involves one or multiple bones with a unilateral distribution in most cases. It is a lesion of unknown etiology, uncertain pathogenesis, and diverse histopathology. Temporal bone involvement is the least frequently reported type, especially in children. We reviewed available articles regarding fibrous dysplasia with temporal bone involvement in children and added four patients aged 7 to 17 years who were diagnosed and treated in our institution from 2006 to 2017...
January 15, 2018: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29334779/extra-articular-tenosynovial-giant-cell-tumor-of-diffuse-type-in-the-temporal-area-with-brain-parenchymal-invasion-a-case-report
#14
Seung-Myoung Son, Young Seok Park, Chi-Hoon Choi, Ho-Chang Lee, Ok-Jun Lee, Chang Gok Woo
Tenosynovial giant cell tumor of diffuse type is a locally aggressive neoplasm that most commonly arises in the lower extremities. Herein, we report for the first time a case of an extra-articular tenosynovial giant cell tumor of diffuse type in the temporal region with brain parenchymal invasion. Imaging studies revealed an intracranial expansile mass in the temporal bone without involvement of the temporomandibular joint. The unusual location of the tumor without involvement of the joint and the presence of brain parenchymal invasion made this case challenging to diagnose...
January 15, 2018: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/29332169/measuring-cochlear-duct-length-in-asian-population-worth-giving-a-thought
#15
Mohnish Grover, Shitanshu Sharma, Shashank Nath Singh, Tanmaya Kataria, Rajendra Singh Lakhawat, Man Prakash Sharma
INTRODUCTION: The anatomy of the cochlea forms the basis for a successful cochlear implantation. Cochlear duct length (CDL) is defined as the length of the scala media as measured from the middle of the round window to helicotrema. Preoperative measurement of CDL is particularly important when precise intracochlear electrode array placement is desired. It can be done both histologically and radiologically. Preoperative high-resolution computed tomography (HRCT) scan which forms an integral part of cochlear implant workup is a useful tool to calculate CDL using 3D reconstructions...
January 13, 2018: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/29329716/gelatin-hydroxyapatite-calcium-sulphate-based-biomaterial-for-long-term-sustained-delivery-of-bone-morphogenic-protein-2-and-zoledronic-acid-for-increased-bone-formation-in-vitro-and-in-vivo-carrier-properties
#16
Deepak Bushan Raina, David Larsson, Filip Mrkonjic, Hanna Isaksson, Ashok Kumar, Lars Lidgren, Magnus Tägil
In this study, a novel macroporous composite biomaterial consisting of gelatin-hydroxyapatite-calcium sulphate for delivery of bone morphogenic protein-2 (rhBMP-2) and zoledronic acid (ZA) has been developed. The biomaterial scaffold has a porous structure and functionalization of the scaffold with rhBMP-2 induces osteogenic differentiation of MC3T3-e1 cells seen by a significant increase in biochemical and genetic markers of osteoblastic differentiation. In-vivo muscle pouch experiments showed higher mineralization using scaffold+rhBMP-2 when compared to an approved absorbable collagen sponge (ACS)+rhBMP-2 as verified by micro-CT...
January 10, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29325888/computed-exophthalmometry-is-an-accurate-and-reproducible-method-for-the-measuring-of-eyeballs-protrusion
#17
Daria S Afanasyeva, Marina B Gushchina, Maxim Y Gerasimov, Sergey A Borzenok
PURPOSE: The aim of this study was to assess reproducibility of the repeated measurements from proposed computed exophthalmometry and to make a comparison with the Hertel exophthalmometer. METHODS: Computed tomography scans of patients with pathological (group 1) and intact orbits (group 2) were included in this retrospective study. In both groups, a single investigator measured a difference of eyeballs' protrusion using the proposed method of computed exophthalmometry...
December 26, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29324473/chondromyxoid-fibroma-arising-in-craniofacial-sites-a-clinicopathologic-analysis-of-25-cases
#18
David M Meredith, Christopher D M Fletcher, Vickie Y Jo
Chondromyxoid fibroma (CMF) is a rare benign tumor, usually arising in the metaphysis of long bones in young adults. Occurrence in craniofacial bones presents a particular diagnostic challenge given its unusual location and resemblance to malignant mimics. We describe the clinicopathologic features of 25 cases of craniofacial CMF identified between 1999 and 2017. Patients were 14 men and 11 women, with median age of 44 years (range, 5 to 83 y). Sites of involvement were sphenoid (7), ethmoid (5), maxilla (3), occipital (2), nasal septum (2), palatine (2), temporal (2), orbit (1), and undisclosed skull (1)...
January 10, 2018: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29317363/spheno-orbital-meningiomas-surgery-multicenter-management-study-for-complex-extensive-tumors
#19
Louis-Marie Terrier, Florian Bernard, Henri-Dominique Fournier, Xavier Morandi, Stéphane Velut, Pierre-Louis Hénaux, Aymeric Amelot, Patrick François
BACKGROUND: Spheno-orbital meningiomas (SOMs) are complex tumors involving the sphenoid wing, the orbit, and sometimes the cavernous sinus with bone hyperostosis and sheet-like dural involvement. Optimal removal, proptosis cure and visual preservation remain a challenge. OBJECTIVE: To study the management of surgically treated SOMs METHODS: The clinical records of 130 consecutive patients undergoing surgery for SOMs were retrospectively collected in a database during a 20-year period to analyze symptoms, surgical technique, clinical outcome, and follow-up...
January 6, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29316290/a-3d-bioprinted-in-situ-conjugated-co-fabricated-scaffold-for-potential-bone-tissue-engineering-applications
#20
Mduduzi N Sithole, Pradeep Kumar, Lisa C du Toit, Thashree Marimuthu, Yahya E Choonara, Viness Pillay
There is a demand for progressive approaches in bone tissue engineering to repair and regenerate bone defects resulting from trauma or disease. This investigation sought to engineer a single-step in situ conjugated polymeric scaffold employing 3D printing technology as an innovative fabricating tool. A polymeric scaffold was engineered in situ employing sodium alginate as a bio-ink which interacted with a poly(ethyleneimine) solution on bioprinting to form a polyelectrolyte complex through ionic bond formation...
January 9, 2018: Journal of Biomedical Materials Research. Part A
keyword
keyword
24714
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"