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https://www.readbyqxmd.com/read/28515637/ultrasound-biomicroscopy-value-in-evaluation-of-restoration-of-ciliary-muscles-contractility-after-cataract-extraction
#1
Ayser Abd El-Hameed Fayed
PURPOSE: To assess the changes in the contractility of the ciliary muscle in eyes with presbyopia before and after phacoemulsification and intracapsular lens implantation using ultrasound biomicroscopy (UBM). PATIENTS AND METHODS: This prospective study included 50 eyes of 30 consecutive subjects operated at the Department of Ophthalmology. Patients with any ocular disorder affecting visual acuity, corneal surface irregularities, had posterior capsular perforation or intensive postoperative corneal edema, or were <35 years of age, were excluded...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28506460/mechanisms-of-ubiquitin-nucleosome-recognition-and-regulation-of-53bp1-chromatin-recruitment-by-rnf168-169-and-rad18
#2
Qi Hu, Maria Victoria Botuyan, Gaofeng Cui, Debiao Zhao, Georges Mer
The protein 53BP1 plays a central regulatory role in DNA double-strand break repair. 53BP1 relocates to chromatin by recognizing RNF168-mediated mono-ubiquitylation of histone H2A Lys15 in the nucleosome core particle dimethylated at histone H4 Lys20 (NCP-ubme). 53BP1 relocation is terminated by ubiquitin ligases RNF169 and RAD18 via unknown mechanisms. Using nuclear magnetic resonance (NMR) spectroscopy and biochemistry, we show that RNF169 bridges ubiquitin and histone surfaces, stabilizing a pre-existing ubiquitin orientation in NCP-ubme to form a high-affinity complex...
May 18, 2017: Molecular Cell
https://www.readbyqxmd.com/read/28489273/low-level-light-minoxidil-5-combination-versus-either-therapeutic-modality-alone-in-management-of-female-patterned-hair-loss-a-randomized-controlled-study
#3
Samia M Esmat, Rehab A Hegazy, Heba I Gawdat, Rania M Abdel Hay, Riham S Allam, Rofaida El Naggar, Hoda Moneib
BACKGROUND: Female pattern hair loss (FPHL) is the most common form of hair loss in women. Nevertheless, its management represents a real challenge. Among the FDA approved therapeutic modalities for FPHL are topical minoxidil and more recently low-level light therapy (LLLT). AIM OF WORK: Assess the efficacy and safety of LLLT in comparison to topical minoxidil 5% and to a combination of both therapies in the treatment of FPHL. PATIENTS AND METHODS: This study included 45 female patients with proven FPHL...
May 10, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28487752/brachytherapy-and-anterior-segment-imaging-in-iris-melanoma
#4
Jin Soo Andy Song, Adam A Dmytriw, Hesham Lakosha
A 40-year-old male presented to the ophthalmology clinic with a darkly pigmented infratemporal lesion in his right eye. The corrected visual acuity in both eyes was 6/6 and both pupils were equal and reactive. Slit lamp biomicroscopy showed a well-demarcated and heavily pigmented lesion in the peripheral iris between 6 and 8 o'clock. Ultrasound biomicroscopy (UBM) revealed a solid mass deriving from the iris stroma without ciliary body involvement, helping to classify the uveal melanoma and establishing the diagnosis of iris melanoma...
2017: Ecancermedicalscience
https://www.readbyqxmd.com/read/28471103/measurement-of-angle-kappa-using-ultrasound-biomicroscopy-and-corneal-topography
#5
Joon Hyung Yeo, Nam Ju Moon, Jeong Kyu Lee
PURPOSE: To introduce a new convenient and accurate method to measure the angle kappa using ultrasound biomicroscopy (UBM) and corneal topography. METHODS: Data from 42 eyes (13 males and 29 females) were analyzed in this study. The angle kappa was measured using Orbscan II and calculated with UBM and corneal topography. The angle kappa of the dominant eye was compared with measurements by Orbscan II. RESULTS: The mean patient age was 36.4 ± 13...
April 24, 2017: Korean Journal of Ophthalmology: KJO
https://www.readbyqxmd.com/read/28466637/on-chip-evaluation-of-dna-methylation-with-electrochemical-combined-bisulfite-restriction-analysis-utilizing-a-carbon-film-containing-a-nanocrystalline-structure
#6
Ryoji Kurita, Hiroyuki Yanagisawa, Tomoyuki Kamata, Dai Kato, Osamu Niwa
This paper reports an on-chip electrochemical assessment of the DNA methylation status in genomic DNA on a conductive nanocarbon film electrode realized with combined bisulfite restriction analysis (COBRA). The film electrode consists of sp(2) and sp(3) hybrid bonds and is fabricated with an unbalanced magnetron (UBM) sputtering method. First, we studied the effect of the sp(2)/sp(3) ratio of the UBM nanocarbon film electrode with p-aminophenol, which is a major electro-active product of the labeling enzyme from p-aminophenol phosphate...
May 12, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28455286/ultrasound-biomicroscopy-validation-of-a-murine-model-of-cardiac-hypertrophic-preconditioning-comparison-with-a-hemodynamic-assessment
#7
Jiayuan Huang, Jian Wu, Shijun Wang, Jieyun You, Yong Ye, Zhiwen Ding, Fenghua Yang, Xingxu Wang, Junjie Guo, Leilei Ma, Jie Yuan, Yunli Shen, Xiangdong Yang, Aijun Sun, Hong Jiang, Liping Bu, Peter H Backx, Junbo Ge, Yunzeng Zou
In mice, myocardial hypertrophic preconditioning (HP), which is produced by the removal of short-term transverse aortic constriction (TAC), was recently reported to render the heart resistant to hypertrophic responses induced by subsequent re-constriction (Re-TAC). However, there is no efficient non-invasive method for ensuring that the repeated aortic manipulations were successfully performed. We previously demonstrated that ultrasound biomicroscopy (UBM) is a non-invasive and effective approach for predicting TAC success...
April 28, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28432110/anterior-but-not-posterior-choroid-changed-before-and-during-valsalva-manoeuvre-in-healthy-chinese-a-ubm-and-ss-oct-study
#8
Fei Li, Kai Gao, Xingyi Li, Shida Chen, Wenbin Huang, Xiulan Zhang
PURPOSE: To determine if the anterior choroid is involved in ocular change during the Valsalva manoeuvre (VM). MATERIALS AND METHODS: Fifty-three healthy volunteers aged 18-65 years with normal visual field test results and no history of intraocular pressure (IOP) exceeding 21 mm Hg were recruited. Anterior and posterior choroidal changes before and during VM were recorded by ultrasound microscope and swept-source optical coherence tomography, respectively. Parameters of the anterior segment included ciliary body thickness (CBT0), thickness of the choroid at a distance of 4 mm from the root of the iris (CT4), anterior placement of the ciliary body (APCB) and trabecular-ciliary angle (TCA)...
April 21, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28428970/changes-in-anterior-segment-parameters-following-pars-plana-vitrectomy-measured-by-ultrasound-biomicroscopy-ubm
#9
Zahra Ghomi, Fariba Ghassemi
Despite being a posterior segment ocular surgery, pars plana vitrectomy (PPV) may also affect anterior segment parameters. We aimed to investigate anterior segment alterations following PPV using ultrasound biomicroscopy (UBM) to visualize the structural anatomy of the eye. In this study, we enrolled phakic patients undergoing PPV (as the sole procedure). The anterior chamber depth, crystalline lens anterior-posterior (AP) diameter, anterior chamber angle, ciliary body dimensions, and integrity of the ciliary zonules and posterior capsule were assessed using UBM before and at least 3 months after PPV...
2017: Medical Hypothesis, Discovery and Innovation in Ophthalmology
https://www.readbyqxmd.com/read/28400698/laparoscopic-rectopexy-with-urinary-bladder-xenograft-reinforcement
#10
Aradhana Mehta, Rami Afshar, David L Warner, Amy Gardner, Ellen Ackerman, Jared Brandt, Kent C Sasse
BACKGROUND AND OBJECTIVES: Rectal prolapse is often repaired laparoscopically, frequently with the use of reinforcement material. Both synthetic and biologically derived materials reduce recurrence rate compared to primary suture repair. Synthetic mesh introduces potential complications such as mesh erosion, fibrosis, and infection. Urinary bladder matrix (UBM) represents a biologically derived material for reinforcement of rectal prolapse repair with the potential to improve durability without risks of synthetic materials...
January 2017: JSLS: Journal of the Society of Laparoendoscopic Surgeons
https://www.readbyqxmd.com/read/28393032/uveal-effusion-following-acute-primary-angle-closure-a-retrospective-case-series
#11
Jian-Gang Yang, Jian-Jun Li, Hua Tian, Yan-Hong Li, Yu-Jing Gong, An-Le Su, Na He
AIM: To evaluate the morphological changes in anterior segment in Chinese patients with uveal effusion (UE) after the attack of acute primary angle-closure (APAC) using ultrasound biomicroscopy (UBM), and to assess the clinical course and prognosis of the disease. METHODS: In a retrospective case series, 26 eyes in 26 consecutive patients diagnosed with UE after the treatment of intraocular pressure (IOP)-lowering medication for the attack of APAC were enrolled...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28385302/subclassification-of-primary-angle-closure-using-anterior-segment-optical-coherence-tomography-and-ultrasound-biomicroscopic-parameters
#12
Junki Kwon, Kyung Rim Sung, Seungbong Han, Ye Ji Moon, Joong Won Shin
PURPOSE: To classify eyes with primary angle closure (PAC) in terms of the features visualized using anterior segment optical coherence tomography (AS-OCT) and ultrasound biomicroscopy (UBM). DESIGN: Retrospective, observational study. PARTICIPANTS: A total of 73 eyes of 73 patients with PAC. METHODS: Participants' eyes that had undergone laser peripheral iridotomy (LPI) were imaged using AS-OCT and UBM under the same lighting conditions...
April 3, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28342558/high-intensity-focused-ultrasound-as-first-line-treatment-in-patients-with-chronic-angle-closure-glaucoma-at-risk-for-malignant-glaucoma
#13
M Graber, Z Khoueir, A Beauchet, N Benhatchi, S Hammoud, Y Lachkar
PURPOSE: Evaluation of high intensity focused ultrasound (HIFU) transscleral cyclocoagulation as an alternative to trabeculectomy in the treatment of refractory chronic angle closure glaucoma (CACG). METHODS: This prospective one armed single center pilot study was conducted on patients with medically uncontrolled CACG who underwent high intensity focused ultrasound (HIFU) cyclocoagulation as first line surgical treatment, using the Eye-OP1 HIFU device (Eyetechcare-Rillieux-la-Pape, France) driven by ultrasound biomicroscopic (UBM) ciliary body localization...
April 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/28328634/bridging-the-gap-engineered-porcine-derived-urinary-bladder-matrix-conduits-as-a-novel-scaffold-for-peripheral-nerve-regeneration
#14
Lyly Nguyen, Ashkan Afshari, Nathaniel D Kelm, Alonda C Pollins, R Bruce Shack, Mark D Does, Wesley P Thayer
PURPOSE: This study aims to compare engineered nerve conduits constructed from porcine-derived urinary bladder matrix (UBM) with the criterion-standard nerve autografts, for segmental loss peripheral nerve repairs. METHODS: Forty-eight Sprague-Dawley rats were divided into 2 groups. All underwent a 10-mm sciatic nerve gap injury. This was repaired using either (1) reverse autograft-the 10-mm cut segment was oriented 180 degrees and used to coapt the proximal and distal stumps or (2) UBM conduit-the 10-mm nerve gap was bridged with UBM conduit...
June 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28302681/ultrasound-biomicroscopic-imaging-in-paediatric-ocular-toxocariasis
#15
Jinghua Liu, Songfeng Li, Guangda Deng, Wenli Yang, Wei Chen, Hai Lu
PURPOSE: To determine the potential and usefulness of ultrasound biomicroscopy (UBM) as a diagnostic procedure on a larger cohort of paediatric patients with ocular toxocariasis. METHODS: UBM was performed on 41 eyes of 41 patients with ocular toxocariasis in order to determine configuration of peripheral retina, pars plana and vitreous. Location and range of peripheral pathology using ophthalmoscopy with scleral indentation, UBM and intraoperative confirmation were recorded and compared...
March 16, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28302178/laser-peripheral-iridotomy-versus-laser-peripheral-iridotomy-plus-laser-peripheral-iridoplasty-in-the-treatment-of-multi-mechanism-angle-closure-study-protocol-for-a-randomized-controlled-trial
#16
Shida Chen, Jianhua Lv, Sujie Fan, Hong Zhang, Lin Xie, Ling Xu, Bing Jiang, Huipin Yuan, Yuanbo Liang, Shuning Li, Pingyan Chen, Xiulan Zhang, Ningli Wang
BACKGROUND: China has the largest burden of primary angle-closure glaucoma (PACG) worldwide. The mechanism of the angle closure is complex and includes pupillary block and non-pupillary block. Currently, opinion is that laser peripheral iridotomy (LPI) alone is not sufficient to prevent disease progression. Laser peripheral iridoplasty (LPIP) is an alternative and effective way of widening the angle recess in eyes that are affected by primary angle closure (PAC). However, it is not known if greater benefit would be achieved using LPI plus LPIP for PAC with multiple mechanisms (MAC)...
March 17, 2017: Trials
https://www.readbyqxmd.com/read/28301497/long-term-outcomes-of-ciliary-sulcus-versus-capsular-bag-fixation-of-intraocular-lenses-in-children-an-ultrasound-biomicroscopy-study
#17
Yun-E Zhao, Xian-Hui Gong, Xue-Ning Zhu, He-Ming Li, Meng-Jun Tu, Terry G Coursey, Stephen C Pflugfelder, Feng Gu, Ding Chen
PURPOSE: To evaluate the long-term outcomes of ciliary sulcus versus capsular bag fixation of intraocular lenses (IOLs) in children after pediatric cataract surgery. METHODS: IOL was implanted in the ciliary sulcus in 21 eyes of 14 children, and in the capsular bag in 19 eyes of 12 children for the treatment of pediatric cataract in an institutional setting. Ultrasound biomicroscopy (UBM) was performed. Main outcome measures included IOL decentration, IOL tilt, anterior chamber depth (ACD), angle-opening distance at 500 μm (AOD500), trabecular-iris angle (TIA), best-corrected visual acuity (BCVA), intraocular pressure (IOP), and incidence of postoperative complications...
2017: PloS One
https://www.readbyqxmd.com/read/28277472/transvaginal-repair-of-complex-rectovaginal-fistulas-using-the-porcine-urinary-bladder-matrix-as-an-augmenting-graft
#18
Hemikaa Devakumar, Neeraja Chandrasekaran, Alexandriah Alas, Laura Martin, G Willy Davila, Eric Hurtado
BACKGROUND: After the US Food and Drug Administration issued a safety warning concerning vaginal mesh implants in 2008, their use in correction of pelvic floor defects have decreased in the United States (http://www.fda.gov/NewsEvents/Newsroom/PressAnnouncements/ucm479732.htm). However, we are still treating patients who have had complications associated with their use, rectovaginal fistulas (RVFs) being one of them. Rectovaginal fistulas are considered complex if greater than 2.5 cm, recurrent, associated with inflammatory bowel disease, or if they are proximal in location...
May 2017: Female Pelvic Medicine & Reconstructive Surgery
https://www.readbyqxmd.com/read/28268436/applications-of-ubms-and-i-vectors-in-eeg-subject-verification
#19
Christian Ward, Joseph Picone, Iyad Obeid
The processing of electroencephalograms (EEGs) is a growing field where mature speech processing techniques are able to rapidly progress development and understanding of the associated neuroscience. I-vectors and Joint Factor Analysis (JFA), along with their foundational universal background models (UBMs) have progressed to a level of understanding that makes them prime for transition to the EEG community. To prove the capability of these techniques they are tested against two contrasting EEG data sets, PhysioNet's EEG Motor Movement/Imagery Dataset and the Temple University Hospital EEG Corpus, to highlight the effectiveness of the techniques with minimal domain knowledge modifications...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28267677/diabetic-foot-ulcers-treated-with-porcine-urinary-bladder-extracellular-matrix-and-total-contact-cast-interim-analysis-of-a-randomized-controlled-trial
#20
Oscar M Alvarez, Tashara Smith, Thomas W Gilbert, Neh J Onumah, Martin E Wendelken, Rachelle Parker, Lee Markowitz
OBJECTIVE: To evaluate the effectiveness of a porcine urinary bladder-derived extracellular matrix (UBM) for the treatment of recalcitrant, neuropathic diabetic foot ulcers (DFUs). MATERIALS AND METHODS: This prospective, parallel, randomized, single-center study involving 17 subjects was performed in an outpatient wound care center setting. Each subject with a DFU was randomized (2:1) to receive the urinary bladder matrix (UBM) plus offloading with a total contact cast (TCC) or standard care (nonadherent dressing plus TCC)...
February 27, 2017: Wounds: a Compendium of Clinical Research and Practice
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