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https://www.readbyqxmd.com/read/28546991/structural-modeling-of-a-novel-slc38a8-mutation-that-causes-foveal-hypoplasia
#1
Marcus A Toral, Gabriel Velez, Katherine Boudreault, Kellie A Schaefer, Yu Xu, Norman Saffra, Alexander G Bassuk, Stephen H Tsang, Vinit B Mahajan
BACKGROUND: Foveal hypoplasia (FH) in the absence of albinism, aniridia, microphthalmia, or achromatopsia is exceedingly rare, and the molecular basis for the disorder remains unknown. FH is characterized by the absence of both the retinal foveal pit and avascular zone, but with preserved retinal architecture. SLC38A8 encodes a sodium-coupled neutral amino acid transporter with a preference for glutamate as a substrate. SLC38A8 has been linked to FH. Here, we describe a novel mutation to SLC38A8 which causes FH, and report the novel use of OCT-angiography to improve the precision of FH diagnosis...
May 2017: Molecular Genetics & Genomic Medicine
https://www.readbyqxmd.com/read/28545570/the-feasibility-of-contrast-enhanced-ultrasonography-ceus-in-the-diagnosis-of-non-cardiac-thoracic-disorders-of-dogs-and-cats
#2
N Linta, M Baron Toaldo, G Bettini, A Cordella, M Quinci, P Pey, V Galli, M Cipone, A Diana
BACKGROUND: This study describes the feasibility of Contrast Enhanced Ultrasonography (CEUS) in the diagnostic work-up of non-cardiac thoracic disorders of small animals. The second aim is to assess the usefulness of CEUS as a direct guide for sample procedures. RESULTS: Forty animals, 28 dogs and 12 cats, were included in the study. Thoracic disorders included 23 pulmonary lesions [primary carcinoma (14), lymphoma (1), sarcoma (1), histiocytic sarcoma (1), abscess (1) and pneumonia (5)] and 17 mediastinal lesions [lymphoma (8), thymoma (3), mesothelioma (1), melanoma (1), carcinomatous lymphadenopathy (1), mixsosarcoma (1), lipoma (1), and abscess (1)]...
May 25, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28542098/comparison-of-oxygen-consumption-rates-of-nondegenerate-and-degenerate-human-ivd-cells
#3
Sarah E Cisewski, Yongren Wu, Brooke J Damon, Barton L Sachs, Michael J Kern, Hai Yao
STUDY DESIGN: In vitro measurements of the oxygen consumption rates (OCR) of human intervertebral disc (IVD) cells. OBJECTIVE: To determine the differences in the OCR of nondegenerate and degenerate human annulus fibrosus (AF), nucleus pulposus (NP), and cartilage endplate (CEP) cells at different glucose concentrations. SUMMARY OF BACKGROUND DATA: The avascular nature of the IVD creates a delicate balance between rate of nutrient transport through the matrix and rate of disc cell consumption necessary to maintain tissue health...
May 24, 2017: Spine
https://www.readbyqxmd.com/read/28540784/safety-and-efficacy-of-radiofrequency-assisted-alpps-ralpps-in-patients-with-cirrhosis-related-hepatocellular-carcinoma
#4
Qiang Wang, Jun Yan, Xiaobin Feng, Geng Chen, Feng Xia, Xiaowu Li, Kuansheng Ma, Ping Bie
BACKGROUND AND AIMS: Associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) has high morbidity and mortality. In this study, the safety and efficacy of a modification of ALPPS (radiofrequency-assisted ALPPS, RALPPS) were assessed in patients with hepatocellular carcinoma (HCC). MATERIALS AND METHODS: Patients who were diagnosed with HCC and were considered to have an insufficient future liver remnant (FLR) were enrolled. In stage I, a radiofrequency ablation (RFA) device was used to cauterise along the planned transection plane to form a coagulum avascular area...
March 23, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/28538262/parafoveal-microvascular-features-on-optical-coherence-tomography-angiography-in-eyes-with-circumscribed-choroidal-hemangioma
#5
Kareem Sioufi, Emil A T Say, Sandor C Ferenczy, Carol L Shields
PURPOSE: To evaluate parafoveal microvasculature in eyes with circumscribed choroidal hemangioma using optical coherence tomography angiography. METHODS: Fourteen eyes with unilateral circumscribed choroidal hemangioma were imaged using OCT for central macular thickness and optical coherence tomography angiography for superficial and deep foveal avascular zone area, and superficial and deep capillary density (CD), comparing affected and paired fellow eyes. RESULTS: Mean patient age was 53 years, and mean visual acuity was 20/60 in the involved eye and 20/25 in the fellow eye...
May 19, 2017: Retina
https://www.readbyqxmd.com/read/28538221/retinal-microvasculature-in-nonproliferative-diabetic-retinopathy-automated-quantitative-optical-coherence-tomography-angiography-assessment
#6
Marco Lupidi, Gabriel Coscas, Florence Coscas, Tito Fiore, Elisa Spaccini, Daniela Fruttini, Carlo Cagini
PURPOSE: To perform a qualitative and quantitative assessment of the foveal microvasculature in eyes with diabetic maculopathy using optical coherence tomography angiography (OCT-A). METHODS: Retrospective case series of 48 eyes with diabetic maculopathy and 47 healthy eyes evaluated by Spectralis OCT-A. Perifoveal arcade disruptions, linear vascular dilations, microaneurysms, intraretinal microvascular abnormalities and flow-void areas were qualitatively analyzed on OCT angiograms both for the superficial (SCP) and deep (DCP) capillary plexuses...
May 25, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28536215/sesamoid-osteonecrosis-treated-with-radial-extracorporeal-shock-wave-therapy
#7
Dawn Thompson, Nikos Malliaropoulos, Nat Padhiar
Sesamoid osteonecrosis is a disabling condition resulting in severe forefoot pain, for which there are limited treatment options. We present a 52-year-old man with 1-year history of pain, aggravated by walking and playing tennis. On examination, pain was localised to plantar aspect of the first metatarsophalangeal joint. Imaging revealed evolving end-stage avascular necrosis of lateral sesamoid with early secondary degenerative changes. Previous exhaustive conservative treatment had been unsuccessful in alleviating his pain...
May 22, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28536211/pathological-fracture-of-the-femoral-neck-following-septic-coxitis-and-chronic-osteomyelitis-a-potential-complication-of-lemierre-s-syndrome
#8
Dominik Maximilian Vogt, Ludger Tüshaus, Martin Kaiser, Martin Russlies
We portray the case of a 16-year-old girl who was initially admitted to the paediatric emergency department with non-specific symptoms of a severe cold and was first treated symptomatically on an ambulatory basis. Within 6 days she developed the full clinical picture of Lemierre's syndrome with the extraordinary manifestation of involvement of her right hip. Despite an interdisciplinary coordinated treatment as well as surgical therapy, a full-blown sepsis evolved within a short time period and resulted in almost 2 months of intensive care...
May 22, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28529665/slipped-capital-femoral-epiphysis-a-spectrum-of-surgical-care-and-changes-over-time
#9
R T Loder
PURPOSE: To survey the spectrum of surgical care in children with slipped capital femoral epiphysis (SCFE). This information is valuable in counselling the patient about the future treatment course. METHODS: Data for this study were obtained from the Pediatric Hospital Information System (PHIS) between 2004 and 2015. For all patients with an ICD9 diagnosis of 732.2, gender, ethnicity, hospital, medical record number, date of birth/admission/discharge, type of admission, length of stay, disposition and treatment(s) rendered were collected...
April 2017: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/28529663/the-modified-dunn-procedure-for-slipped-capital-femoral-epiphysis-the-bernese-experience
#10
M Tannast, L M Jost, T D Lerch, F Schmaranzer, K Ziebarth, K A Siebenrock
PURPOSE: Based on previous investigations on the vascular blood supply to the femoral head, a technique for anatomical reduction after slipped capital femoral epiphysis was developed. This technique is a modification of the original technique by Dunn using a retinacular soft-tissue flap. This allows the visual control of the epiphyseal vascular blood supply. We report the experience at the inventor's institution with a critical discussion of the available literature. METHODS: Using a trochanteric osteotomy for surgical dislocation of the hip, a retinacular soft tissue flap is created containing the deep branch of the medial femoral circumflex artery, the external rotators and the capsule...
April 2017: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/28529656/imaging-modalities-in-patients-with-slipped-capital-femoral-epiphysis
#11
T Hesper, C Zilkens, B Bittersohl, R Krauspe
BACKGROUND: Slipped capital femoral epiphysis (SCFE) is a frequent disorder of the adolescent hip, which may lead to avascular necrosis (AVN) of the femoral head, chondrolysis and early osteoarthritis due to the post-slip deformity of the proximal femur. To warrant the best possible outcome for the affected (and contralateral) hip, early diagnosis and proper treatment are needed. METHODS: A review of the literature was undertaken to identify today's role of available imaging modalities in the management of SCFE...
April 2017: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/28526613/the-role-of-trochanteric-flip-osteotomy-in-fixation-of-certain-acetabular-fractures
#12
Sandeep Gupta, Jagdeep Singh, Jagandeep Singh Virk
PURPOSE: Complete visualization of certain acetabular fractures of posterior wall or column with cranial extension involving superior dome from standard surgical exposures is a challenge. Osteotomy of the greater trochanter has been used to enhance fracture visualization, especially the dome, in posterior and lateral exposures of the acetabulum. It also decreases the need for excessive muscle retraction. The purpose of the study was to investigate the outcome associated with trochanteric flip osteotomy in the management of certain acetabulum fractures...
March 23, 2017: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/28523266/stimulating-fracture-healing-in-ischemic-environments-does-oxygen-direct-stem-cell-fate-during-fracture-healing
#13
REVIEW
Katherine R Miclau, Sloane A Brazina, Chelsea S Bahney, Kurt D Hankenson, Thomas K Hunt, Ralph S Marcucio, Theodore Miclau
Bone fractures represent an enormous societal and economic burden as one of the most prevalent causes of disability worldwide. Each year, nearly 15 million people are affected by fractures in the United States alone. Data indicate that the blood supply is critical for fracture healing; as data indicate that concomitant bone and vascular injury are major risk factors for non-union. However, the various role(s) that the vasculature plays remains speculative. Fracture stabilization dictates stem cell fate choices during repair...
2017: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/28521819/linking-hypoxia-dna-damage-and-proliferation-in-multicellular-tumor-spheroids
#14
Stephen Riffle, Ram Naresh Pandey, Morgan Albert, Rashmi S Hegde
BACKGROUND: Multicellular Tumor Spheroids are frequently used to mimic the regionalization of proliferation and the hypoxic environment within avascular tumors. Here we exploit these features to study the activation of DNA damage repair pathways and their correlation to developing hypoxia. METHODS: Activation of DNA damage repair markers, proliferation, cell death, glycogen accumulation and developing hypoxia were investigated using immunofluorescence, immuno-histochemistry, EdU incorporation, Western blots, COMET assays, and pharmacological agents in A673 Ewing sarcoma spheroids and monolayer cultures...
May 18, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28507969/core-decompression-with-synthetic-grafting-as-a-joint-preservation-strategy-in-humeral-avascular-necrosis-due-to-sickle-cell-anemia-a-case-report
#15
Andrew M Steffensmeier, Karen Kirkham, John M Wiemann
INTRODUCTION: Avascular necrosis (AVN) of the femoral or humeral heads in patients with sickle cell anemia is a common and painful condition. There is currently no gold standard treatment protocol for this condition. Typically, the pain is managed with narcotics and activity restriction until there has been collapse of the subchondral bone with a degree of arthrosis sufficient to warrant total joint arthroplasty. This method entails prolonged pain for the patient and decreases the ability to function occupationally and recreationally...
November 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28507661/bone-marrow-aspirate-concentrate-in-combination-with-intravenous-iloprost-increases-bone-healing-in-patients-with-avascular-necrosis-of-the-femoral-head-a-matched-pair-analysis
#16
Hakan Pilge, Bernd Bittersohl, Johannes Schneppendahl, Tobias Hesper, Christoph Zilkens, Martin Ruppert, Rüdiger Krauspe, Marcus Jäger
With disease progression, avascular necrosis (AVN) of the femoral head may lead to a collapse of the articular surface. The exact pathophysiology of AVN remains unclear, although several conditions are known that can result in spontaneous cell death, leading to a reduction of trabecular bone and the development of AVN. Hip AVN treatment is stage-dependent in which two main stages of the disease can be distinguished: pre-collapse (ARCO 0-II) and post-collapse stage (ARCO III-IV, crescent sign). In the pre-collapse phase, core decompression (CD), with or without the addition of bone marrow (e...
November 17, 2016: Orthopedic Reviews
https://www.readbyqxmd.com/read/28505817/fractal-dimension-and-universality-in-avascular-tumor-growth
#17
Fabiano L Ribeiro, Renato Vieira Dos Santos, Angélica S Mata
For years, the comprehension of the tumor growth process has been intriguing scientists. New research has been constantly required to better understand the complexity of this phenomenon. In this paper, we propose a mathematical model that describes the properties, already known empirically, of avascular tumor growth. We present, from an individual-level (microscopic) framework, an explanation of some phenomenological (macroscopic) aspects of tumors, such as their spatial form and the way they develop. Our approach is based on competitive interaction between the cells...
April 2017: Physical Review. E
https://www.readbyqxmd.com/read/28503471/correction-effectiveness-of-lower-energy-density-extracorporeal-shock-wave-therapy-in-the-early-stage-of-avascular-necrosis-of-the-femoral-head
#18
Yong Han, June-Kyung Lee, Bong-Yeon Lee, Hoi-Sung Kee, Kwang-Ik Jung, Seo-Ra Yoon
[This corrects the article on p. 871 in vol. 40, PMID: 27847717.].
April 2017: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28501766/therapeutic-effects-of-zerumbone-in-an-alkali-burned-corneal-wound-healing-model
#19
Jong Won Kim, Hyuneui Jeong, Myeon-Sik Yang, Chae Woong Lim, Bumseok Kim
Cornea is an avascular transparent tissue. Ocular trauma caused by a corneal alkali burn induces corneal neovascularization (CNV), inflammation, and fibrosis, leading to vision loss. The purpose of this study was to examine the effects of Zerumbone (ZER) on corneal wound healing caused by alkali burns in mice. CNV was induced by alkali-burn injury in BALB/C female mice. Topical ZER (three times per day, 3μl each time, at concentrations of 5, 15, and 30μM) was applied to treat alkali-burned mouse corneas for 14 consecutive days...
May 11, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28501447/comparison-of-quantitative-measurement-of-foveal-avascular-zone-and-macular-vessel-density-in-eyes-of-children-with-amblyopia-and-healthy-controls-an-optical-coherence-tomography-angiography-study
#20
Ihsan Yilmaz, Osman Bulut Ocak, Basak Saracoglu Yilmaz, Aslı Inal, Birsen Gokyigit, Muhittin Taskapili
PURPOSE: To quantify vessel density of superficial capillary plexus (SCP), deep capillary plexus (DCP), and the foveal avascular zone (FAZ) of children's amblyopic eyes and to compare the measurements with those of companion eyes and age-matched controls. METHODS: Fifteen patients with strabismic amblyopia, and 15 age-matched controls were included in this cross-sectional study. SCP, DCP, and FAZ were measured via optical coherence tomographic angiography (OCTA)...
May 10, 2017: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
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