keyword
MENU ▼
Read by QxMD icon Read
search

RPE

keyword
https://www.readbyqxmd.com/read/29244539/genotype-phenotype-variability-of-retinal-manifestation-in-primary-hyperoxaluria-type-1
#1
S Dulz, E Bigdon, Y Atiskova, F Schuettauf, R Cerkauskiene, J Oh, F Brinkert
BACKGROUND: Primary hyperoxaluria type 1 (PH1) is a rare congenital metabolic disorder of the glyoxylate pathway, which manifests with nephrocalcinosis, urolithiasis, and end-stage renal failure (ESRD) as well as deposition of oxalate crystals within ocular tissues. This report demonstrates classical ocular features of PH1 of the posterior pole and furthermore highlights the ocular genotype-phenotype variability among siblings with identical compound heterozygous alanine-glyoxylate aminotransferase (AGXT) mutations...
December 15, 2017: Ophthalmic Genetics
https://www.readbyqxmd.com/read/29243450/pathogenesis-of-age-related-macular-degeneration-dialogue-between-autophagy-and-inflammasomes
#2
Niko Kivinen, Ali Koskela, Anu Kauppinen, Kai Kaarniranta
Age-related macular degeneration is a condition affecting central vision, and is the leading cause of blindness and visual impairment in the western countries. For a long time, inflammation has been associated with the pathogenesis of the condition, and according to current knowledge, inflammation in the retinal pigment epithelial cells (RPE) results from an impairment of intracellular cleansing systems. In combination with the degeneration of RPE cells, this eventually leads to the destruction of light-sensing cells...
2017: Duodecim; Lääketieteellinen Aikakauskirja
https://www.readbyqxmd.com/read/29242905/the-long-noncoding-rna-landscape-of-the-mouse-eye
#3
Weiwei Chen, Shuai Yang, Zhonglou Zhou, Xiaoting Zhao, Jiayun Zhong, Peter S Reinach, Dongsheng Yan
Purpose: Long noncoding RNAs (lncRNAs) are important regulators of diverse biological functions. However, an extensive in-depth analysis of their expression profile and function in mammalian eyes is still lacking. Here we describe comprehensive landscapes of stage-dependent and tissue-specific lncRNA expression in the mouse eye. Methods: Affymetrix transcriptome array profiled lncRNA signatures from six different ocular tissue subsets (i.e., cornea, lens, retina, RPE, choroid, and sclera) in newborn and 8-week-old mice...
December 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29239988/effect-of-boards-in-small-sided-street-soccer-games-on-movement-pattern-and-physiological-response-in-recreationally-active-young-men
#4
Morten B Randers, Jonathan Brix, Marie Hagman, Jens J Nielsen, Peter Krustrup
The present study investigated whether street soccer might be proposed as an alternative to recreational small-sided games on grass as a health-enhancing activity, and specifically the effects of the boards surrounding the pitch. Eleven recreationally active young males (28.4±4.2 (±SD) yrs, 19.9±4.2% body fat, 47.7±6.0 mlminkg), after familiarization, completed one to two sessions of 20x13-m 3v3 street soccer games with boards (WB) and one to two sessions without boards (WOB) in a randomized order. Movement pattern was measured using GPS and heart rate recordings, blood sampling and RPE scales were used to evaluate exercise intensity and physiological strain...
December 11, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29239985/training-load-physical-performance-biochemical-markers-and-psychological-stress-during-a-short-preparatory-period-in-brazilian-elite-male-volleyball-players
#5
Thiago A G Horta, Maurício G Bara Filho, Danilo R Coimbra, R Miranda, Francisco Z Werneck
The aim of this study was to assess the relationship between training load (TL) and physical performance, biochemical markers, and psychological stress during a short preparatory period (PP) in Brazilian elite male volleyball players. Twelve volleyball players from a team competing in the Brazilian Men's Volleyball Super League were enrolled (26.9 ± 4.6 years). Countermovement Jump (CMJ), Creatine Kinase (CK), Testosterone (T), Cortisol (Cr), T/Cr ratio, and Recovery and Stress Questionnaire for Athletes (RESTQ-Sport) were collected at baseline, after 2, 4, and 6 week...
December 11, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29239983/effects-of-2-dehydration-on-lactate-concentration-during-constant-load-cycling
#6
J M Green, Miller Bl, J D Simpson, Dubroc Dr, Keyes Aa, Neal Kk, Gann Jj, Andre Tl
The lactate [La] threshold can predict endurance performance potential. Dehydration may alter [La] threshold. This study examined effects of dehydration on [La] response during constant load cycling. Recreationally fit (VO2 peak = 48.7 ± 5.2 ml•kg•min) male participants (n=9) completed 2 x 40 min constant-load cycling trials; euhydrated (HYD) and following previous evening passive (water bath) dehydration (2% body weight, DEH) (HYD and DEH counterbalanced). [La], heart rate (HR), 10 point Omni Ratings of Perceived Exertion (RPE) and rectal temperature (Trec) were measured following warm-up and at 10, 20, 30, and 40 min...
December 11, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29238242/heart-rate-variability-is-a-moderating-factor-in-the-workload-injury-relationship-of-competitive-crossfit%C3%A2-athletes
#7
Sean Williams, Thomas Booton, Matthew Watson, Daniel Rowland, Marco Altini
Heart rate variability (HRV) is a popular tool for monitoring training adaptation and readiness in athletes, but it also has the potential to indicate early signs of somatic tissue overload prior to the onset of pain or fully developed injury. Therefore, the aim of this study was to investigate the interaction between HRV, workloads, and risk of overuse problems in competitive CrossFit™ athletes. Daily resting HRV and workloads (duration × session-RPE) were recorded in six competitive CrossFit™ athletes across a 16 week period...
December 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29236912/cardiorespiratory-performance-of-coronary-artery-disease-patients-on-land-versus-underwater-treadmill-tests-a-comparative-study
#8
Mauricio Koprowski Garcia, Limanara Rizzo, Paulo Yazbek-Júnior, Daniela Yutiyama, Fabiola Jomar da Silva, Denise Matheus, Luiz Eduardo Mastrocolla, Eduardo Massad
OBJECTIVE: To compare responses to a cardiopulmonary exercise test on land versus on an underwater treadmill, to assess the cardiorespiratory performance of coronary artery disease patients while immersed in warm water and to compare with the performance of healthy individuals. METHODS: The sample population consisted of 40 subjects, which included 20 coronary artery disease patients aged 63.7±8.89 years old, functional class I and II, according to the New York Hearth Association, and 20 healthy subjects aged 64...
November 2017: Clinics
https://www.readbyqxmd.com/read/29234687/delivery-of-cr2-fh-using-aav-vector-therapy-as-treatment-strategy-in-the-mouse-model-of-choroidal-neovascularization
#9
Gloriane Schnabolk, Nathaniel Parsons, Elisabeth Obert, Balasubramaniam Annamalai, Cecile Nasarre, Stephen Tomlinson, Alfred S Lewin, Bärbel Rohrer
Complement activation plays a significant role in age-related macular degeneration (AMD) pathogenesis, and polymorphisms interfering with factor H (fH) function, a complement alternative pathway (AP) inhibitor, are associated with increased AMD risk. We have previously validated an AP inhibitor, a fusion protein consisting of a complement receptor 2 fragment linked to the inhibitory domain of fH (CR2-fH) as an efficacious treatment for choroidal neovascularization (CNV) when delivered intravenously. Here we tested an alternative approach of AAV-mediated delivery (AAV5-VMD2-CR2-fH or AAV5-VMD2-mCherry) using subretinal delivery in C57BL/6J mice...
June 15, 2018: Molecular Therapy. Methods & Clinical Development
https://www.readbyqxmd.com/read/29233750/fibrin-hydrogels-as-a-xenofree-and-rapidly-degradable-support-for-transplantation-of-retinal-pigment-epithelium-monolayers
#10
Jarel K Gandhi, Zahid Manzar, Lori A Bachman, Cynthia Andrews-Pfannkoch, Travis Knudsen, Matthew Hill, Hannah Schmidt, Raymond Iezzi, Jose S Pulido, Alan D Marmorstein
Recent phase 1 trials of embryonic stem cell and induced pluripotent stem cell (iPSCs) derived RPE transplants for the treatment of macular degeneration have demonstrated the relative safety of this process. However, there is concern over clumping, thickening, folding, and wrinkling of the transplanted RPE. To deliver a flat RPE monolayer, current phase 1 trials are testing synthetic substrates for RPE transplantation. These substrates, however, cause localized inflammation and fibrosis in animal models due to long degradation times...
December 9, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/29229934/bis-monoacylglycero-phosphate-lipids-in-the-retinal-pigment-epithelium-implicate-lysosomal-endosomal-dysfunction-in-a-model-of-stargardt-disease-and-human-retinas
#11
David M G Anderson, Zsolt Ablonczy, Yiannis Koutalos, Anne M Hanneken, Jeffrey M Spraggins, M Wade Calcutt, Rosalie K Crouch, Richard M Caprioli, Kevin L Schey
Stargardt disease is a juvenile onset retinal degeneration, associated with elevated levels of lipofuscin and its bis-retinoid components, such as N-retinylidene-N-retinylethanolamine (A2E). However, the pathogenesis of Stargardt is still poorly understood and targeted treatments are not available. Utilizing high spatial and high mass resolution matrix assisted laser desorption ionization (MALDI) imaging mass spectrometry (IMS), we determined alterations of lipid profiles specifically localized to the retinal pigment epithelium (RPE) in Abca4 -/- Stargardt model mice compared to their relevant background strain...
December 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29228252/retinal-reflectivity-measurement-for-cone-impairment-estimation-and-visual-assessment-after-diabetic-macular-edema-resolution-recover-dme
#12
Benjamin Guyon, Emeric Elphege, Mathieu Flores, Anne-Sophie Gauthier, Bernard Delbosc, Maher Saleh
Purpose: Photoreceptor loss has been suspected of being involved in incomplete visual recovery after diabetic macular edema (DME) resolution. Recent studies have shown that cone density in the perifoveal area could be estimated by in vivo measurements of the outer retinal reflectivity on optical coherence tomography (OCT). The main objective of this study was to assess the photoreceptor layer reflectivity after DME resolution and to determine its relationship with final visual acuity (VA)...
December 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29225722/cellular-senescence-in-age-related-macular-degeneration-can-autophagy-and-dna-damage-response-play-a-role
#13
REVIEW
Janusz Blasiak, Malgorzata Piechota, Elzbieta Pawlowska, Magdalena Szatkowska, Ewa Sikora, Kai Kaarniranta
Age-related macular degeneration (AMD) is the main reason of blindness in developed countries. Aging is the main AMD risk factor. Oxidative stress, inflammation and some genetic factors play a role in AMD pathogenesis. AMD is associated with the degradation of retinal pigment epithelium (RPE) cells, photoreceptors, and choriocapillaris. Lost RPE cells in the central retina can be replaced by their peripheral counterparts. However, if they are senescent, degenerated regions in the macula cannot be regenerated...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29221752/chronic-nicotine-exposure-impairs-uncertainty-modulation-on-reinforcement-learning-in-anterior-cingulate-cortex-and-serotonin-system
#14
Zhengde Wei, Long Han, Xiuying Zhong, Ying Liu, Rujing Zha, Ying Wang, Li-Zhuang Yang, Junjie Bu, Hongwen Song, Wenjuan Wang, Yifeng Zhou, Ping Gao, Xiaochu Zhang
Deficits in the computational processes of reinforcement learning have been suggested to underlie addiction. Additionally, environmental uncertainty, which is encoded in the anterior cingulate cortex (ACC), modulates reward prediction errors (RPEs) during reinforcement learning and exacerbates addiction. The present study tested whether and how the ACC would have an essential role in drug addiction by failing to use uncertainty to modulate the RPEs during reinforcement learning. In Experiment I, we found that the ACC/medial prefrontal cortex (MPFC) did not modulate RPE learning according to uncertainty in smokers...
December 5, 2017: NeuroImage
https://www.readbyqxmd.com/read/29220112/multispectral-image-analysis-in-vogt-koyanagi-harada-disease
#15
Guo Huang, Junchao Peng, Zi Ye, Aize Kijlstra, Donglei Zhang, Peizeng Yang
PURPOSE: To investigate fundus abnormalities in Vogt-Koyanagi-Harada (VKH) disease by a noninvasive tool, multispectral imaging (MSI). METHODS: A total of 77 patients with VKH and 163 healthy controls were enrolled between January and April 2015. The MSI findings were evaluated in combination with fundus fluorescein angiography (FFA), optical coherent tomography (OCT) and fundus photography (FP). Additionally, we compared extent of exposure of choroidal blood vessels between patients with VKH and healthy controls to evaluate retinal transmission function...
December 8, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/29219961/measurement-of-full-thickness-macular-hole-size-using-en-face-optical-coherence-tomography
#16
E Philippakis, M Legrand, M El Sanharawi, A Erginay, A Couturier, R Tadayoni
PurposeTo assess the feasibility and interest of measuring macular hole (MH) size using en face optical coherence tomography (OCT) compared with manual diameter measurements on B-scans.MethodsAmong our previously published series of 100 patients operated for primary MH, patients whose images were acquired with Cirrus 5000 HD-OCT (Carl Zeiss Meditec) with a quality signal strength >5/10 were included. Three segmentations (internal limiting membrane, horizontal, and retinal pigment epithelium (RPE)) were compared for obtaining the most appropriate en face image...
December 8, 2017: Eye
https://www.readbyqxmd.com/read/29216640/celecoxib-down-regulates-the-hypoxia-induced-expression-of-hif-1%C3%AE-and-vegf-through-the-pi3k-akt-pathway-in-retinal-pigment-epithelial-cells
#17
Yi-Zhou Sun, Na Cai, Ning-Ning Liu
BACKGROUND/AIMS: The goal of this study was to detect the expression of hypoxia-inducible factor 1α (HIF-1α) and vascular endothelial growth factor (VEGF) in human retinal pigmented epithelial (RPE) cells treated with celecoxib, a selective cyclooxygenase-2 (COX-2) inhibitor, under hypoxic and normoxic conditions and to explore the signaling mechanism involved in regulating the hypoxia-induced expression of HIF-1α and VEGF in RPE cells. METHODS: D407 cells were cultured in normoxic or hypoxic conditions, with or without celecoxib or a PI3K inhibitor (LY294002)...
December 6, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29215532/imaging-of-vitelliform-macular-lesions-using-polarization-sensitive-optical-coherence-tomography
#18
Gábor G Deák, Wolfgang M Schmidt, Reginald E Bittner, Georgios Mylonas, Philipp K Roberts, Stefan Zotter, Bernhard Baumann, Michael Pircher, Christoph K Hitzenberger, Ursula M Schmidt-Erfurth, Markus Ritter
PURPOSE: To examine the involvement of the retinal pigment epithelium (RPE) in the presence of vitelliform macular lesions (VML) in Best vitelliform macular dystrophy (BVMD), autosomal recessive bestrophinopathy, and adult-onset vitelliform macular degeneration using polarization-sensitive optical coherence tomography (PS-OCT). METHODS: A total of 35 eyes of 18 patients were imaged using a PS-OCT system and blue light fundus autofluorescence imaging. Pathogenic mutations in the BEST1 gene, 3 of which were new, were detected in all patients with BVMD and autosomal recessive bestrophinopathy...
December 5, 2017: Retina
https://www.readbyqxmd.com/read/29214920/caffeine-effects-on-vo2max-test-outcomes-investigated-by-a-placebo-perceived-as-caffeine-design
#19
Cayque Brietzke, Ricardo Yukio Asano, Felipe De Russi de Lima, Fabiano Aparecido Pinheiro, Franco-Alvarenga, Carlos Ugrinowitsch, Flávio Oliveira Pires
BACKGROUND: Ergogenic effects of caffeine (CAF) ingestion have been observed in different cycling exercise modes, and have been associated with alterations in ratings of perceived exertion (RPE). However, there has been little investigation of maximal oxygen uptake (VO2MAX) test outcomes. AIM: This study aimed to verify whether CAF may reduce RPE, thereby improving maximal incremental test (MIT) outcomes such as VO2MAX, time to exhaustion and peak power output (WPEAK)...
December 2017: Nutrition and Health
https://www.readbyqxmd.com/read/29214073/assessment-of-ocriplasmin-effects-on-the-vitreoretinal-compartment-in-porcine-and-human-model-systems
#20
Bart Jonckx, Michael Porcu, Aurelie Candi, Isabelle Etienne, Philippe Barbeaux, Jean H M Feyen
Ocriplasmin (Jetrea®) is a recombinant protease used to treat vitreomacular traction. To gain insight into vitreoretinal observations reported after ocriplasmin treatment, we have developed an in vivo porcine ocriplasmin-induced posterior vitreous detachment (PVD) model in which we investigated vitreoretinal tissues by optical coherence tomography, histology, and cytokine profiling. Eight weeks postinjection, ocriplasmin yielded PVD in 82% of eyes. Subretinal fluid (85%) and vitreous hyperreflective spots (45%) were resolved by week 3...
2017: Journal of Ophthalmology
keyword
keyword
99646
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"