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https://www.readbyqxmd.com/read/28548651/foetal-haemoglobin-blood-transfusion-and-retinopathy-of-prematurity-in-very-preterm-infants-a-pilot-prospective-cohort-study
#1
C J Stutchfield, A Jain, D Odd, C Williams, R Markham
PurposeTo identify if there is an association between foetal haemoglobin (HbF) concentration and retinopathy of prematurity (ROP) in very preterm infants.Patients and methodsProspective cohort study. Infants born <32 weeks' gestational age or <1501 g in two tertiary neonatal units between January 2012 and May 2013 (n=42) were enrolled. HbF and adult haemoglobin (HbA) concentrations were measured using high-pressure liquid chromatography from blood samples sent as part of routine neonatal care once routinely requested laboratory tests had been performed...
May 26, 2017: Eye
https://www.readbyqxmd.com/read/28545834/the-relationship-of-the-subtypes-of-preterm-birth-with-retinopathy-of-prematurity
#2
Anne M Lynch, Brandie D Wagner, Jennifer K Hodges, Tamara S Thevarajah, Emily A Mccourt, Ashlee M Cerda, Naresh Mandava, Ronald S Gibbs, Alan G Palestine
BACKGROUND: Retinopathy of prematurity (ROP) is an adverse outcome of preterm birth (PTB) and is a leading cause of childhood blindness. The relationship between the subtypes of PTB with ROP is understudied. OBJECTIVE: To investigate if there is a difference in the incidence of type 1 or type 2 ROP in infants with PTB resulting from spontaneous preterm labor (SPTL), a medical indication (MIPTB), or preterm-premature rupture of the membranes (PPROM). STUDY DESIGN: A retrospective cohort study of 827 infants screened for ROP who delivered at a single tertiary care center in Colorado...
May 22, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28541957/the-cutting-edge-of-retinopathy-of-prematurity-care-expanding-the-boundaries-of-diagnosis-and-treatment
#3
Yoshihiro Yonekawa, Benjamin J Thomas, Aristomenis Thanos, Bozho Todorich, Kimberly A Drenser, Michael T Trese, Antonio Capone
PURPOSE: To discuss the latest advances and controversies in the diagnosis and care of infants with retinopathy of prematurity (ROP). METHODS: Literature review. RESULTS: Retinopathy of prematurity remains a major global issue. Industrialized nations now treat profoundly premature infants with posterior and aggressive disease, and middle-income nations are experiencing ROP epidemics. Remote digital imaging may address the decreasing ratio of ROP providers to premature infants, in addition to improving patient care...
May 24, 2017: Retina
https://www.readbyqxmd.com/read/28539261/g-protein-coupled-receptor-91-signaling-in-diabetic-retinopathy-and-hypoxic-retinal-diseases
#4
Jianyan Hu, Tingting Li, Xinhua Du, Qiang Wu, Yun-Zheng Le
G protein-coupled receptor 91 (GPR91) is a succinate-specific receptor and activation of GPR91 could initiate a complex signal transduction cascade and upregulate inflammatory and pro-angiogenic cytokines. In the retina, GPR91 is predominately expressed in ganglion cells, a major cellular entity involved in the pathogenesis of diabetic retinopathy (DR) and other hypoxic retinal diseases. During the development of DR and retinopathy of prematurity (ROP), chronic hypoxia causes an increase in the levels of local succinate...
May 21, 2017: Vision Research
https://www.readbyqxmd.com/read/28536205/severe-retinopathy-of-prematurity-predicts-delayed-white-matter-maturation-and-poorer-neurodevelopment
#5
Torin J A Glass, Vann Chau, Jane Gardiner, Justin Foong, Jillian Vinall, Jill G Zwicker, Ruth E Grunau, Anne Synnes, Kenneth J Poskitt, Steven P Miller
OBJECTIVE: To determine whether severe retinopathy of prematurity (ROP) is associated with (1) abnormal white matter maturation and (2) neurodevelopmental outcomes at 18 months' corrected age (CA) compared with neonates without severe ROP. DESIGN: We conducted a prospective longitudinal cohort of extremely preterm neonates born 24-28 weeks' gestational age recruited between 2006 and 2013 with brain MRIs obtained both early in life and at term-equivalent age. Severe ROP was defined as ROP treated with retinal laser photocoagulation...
May 23, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/28535473/length-effect-of-methoxy-poly-ethylene-oxide-b-poly-%C3%AE%C2%B5-caprolactone-g-poly-methacrylic-acid-copolymers-on-cisplatin-delivery
#6
Hsuan-Ying Chen, Yu-Lun Lo, Pei-Ling Wu, Pei-Chi Lo, Li-Fang Wang
Novel comb-shaped amphiphilic copolymers based on methoxy poly(ethylene glycol)-b-[poly(ε-caprolactone)-g-poly(methacrylic acid)] (MPCL-g-pMAA), were synthesized via ring opening polymerization (ROP) and atom transfer radical polymerization (ATRP) for drug delivery systems. MPCL-g-pMAAs with various MAA repeating units self-assemble into a core-shell structure in an aqueous solution. Critical aggregation concentrations range within 5.6×10(-3)-7.0×10(-2)mg/mL in double deionized water and 8.9×10(-3)-7.0×10(-2)mg/mL in phosphate buffered saline of pH 7...
May 12, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28523526/iris-fixated-phakic-intraocular-lens-implantation-in-an-adult-with-retinopathy-of-prematurity-1-year-follow-up
#7
Young Shin Kim, Jin Kwon Chung, Sung Jin Lee
PURPOSE: To report a case of iris-fixated phakic intraocular lens (pIOL) implantation in a patient with an extremely steep cornea, shallow anterior chamber, and small corneal diameter caused by retinopathy of prematurity (ROP) and scleral encircling. METHODS: Case report. RESULTS: Iris-fixated pIOLs were implanted in a 19-year-old patient with refraction of -18.5 -0.75 × 180 in the right eye and -15.5 -1.25 × 180 in the left eye. The keratometric values were 53...
May 18, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28506724/validation-of-winrop-for-detecting-retinopathy-of-prematurity-in-a-north-american-cohort-of-preterm-infants
#8
Jennifer L Jung, Brandie D Wagner, Emily A McCourt, Alan G Palestine, Ashlee Cerda, Jennifer H Cao, Robert W Enzenauer, Jasleen K Singh, Rebecca S Braverman, Erica Wymore, Anne M Lynch
BACKGROUND: WINROP (weight, insulin-like growth factor 1, neonatal, retinopathy of prematurity) is a web-based retinopathy of prematurity (ROP) risk algorithm that uses postnatal weight gain as a surrogate of insulin-like growth factor-1 (IGF-1) to predict the risk of severe ROP in premature infants. The purpose of this study was to validate the web-based algorithm WINROP in detecting severe (type 1 or type 2) ROP in a North American cohort of infants. METHODS: The records of consecutive infants who underwent ROP examinations between 2008 and 2011 were reviewed retrospectively...
May 12, 2017: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/28506352/-effect-of-breastfeeding-versus-formula-milk-feeding-on-preterm-infants-in-the-neonatal-intensive-care-unit
#9
Yong-Wei Li, Chao-Ying Yan, Lei Yang, Zong-Lai Han
OBJECTIVE: To investigate the importance of breastfeeding in preterm infants with various gestational ages. METHODS: A total of 639 preterm infants with a gestational age of 28(+3)-36(+6) weeks were enrolled, and according to the feeding pattern, they were divided into exclusive breastfeeding group (n=237) and formula milk feeding group (fed with liquid milk for preterm infants; n=402). These two feeding patterns were compared in terms of their effects on weight gain, laboratory markers including albumin (Alb) and alkaline phosphatase (ALP), incidence rate of feeding intolerance, and incidence rates of complications including necrotizing enterocolitis (NEC) and retinopathy of prematurity (ROP)...
May 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28504887/co2-controlled-one-pot-synthesis-of-ab-aba-block-and-statistical-terpolymers-from-%C3%AE-butyrolactone-epoxides-and-co2
#10
Sebastian Kernbichl, Marina Reiter, Friederike Adams, Sergei Vagin, Bernhard Rieger
Terpolymerizations of (rac)-β-butyrolactone (BBL), cyclohexene oxide (CHO), and carbon dioxide were realized in one-pot reactions utilizing a Lewis acid BDI(CF3)-Zn-N(SiMe3)2 (1) catalyst. The type of polymerization can be regulated and switched between ring-opening polymerization (ROP) of BBL and CHO/CO2 copolymerization by the presence of CO2 in the reaction mixture. Applying 3 bar CO2 to the three-component system leads to similar reaction rates for copolymerization and ROP and therefore to a terpolymer with a statistical composition, whereas 40 bar CO2 affords exclusive copolymerization of CHO/CO2...
May 15, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28502635/identification-of-vitreous-proteins-in-retinopathy-of-prematurity
#11
Koji Sugioka, Akio Saito, Shunji Kusaka, Kazuki Kuniyoshi, Yoshikazu Shimomura
Retinopathy of prematurity (ROP) is a disorder of blood vessels in the retina developed in premature infants and the leading cause of the blindness in children. Proteomic analysis was performed to identify vitreous proteins specific to patients with ROP. Vitreous humor samples were obtained from three patients with ROP and two patients with congenital cataract, the latter included as a control group. The vitreous samples were separated by 2D-PAGE and the proteins running as definitive spots were identified by MALDI-TOF MS spectrometry...
May 11, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28501874/screening-tool-for-early-postnatal-prediction-of-retinopathy-of-prematurity-in-preterm-newborns-step-rop
#12
Caroline A Ricard, Christiane E L Dammann, Olaf Dammann
BACKGROUND: Retinopathy of prematurity (ROP) is a disorder of the preterm newborn characterized by neurovascular disruption in the immature retina that may cause visual impairment and blindness. OBJECTIVE: To develop a clinical screening tool for early postnatal prediction of ROP in preterm newborns based on risk information available within the first 48 h of postnatal life. METHODS: Using data submitted to the Vermont Oxford Network (VON) between 1995 and 2015, we created logistic regression models based on infants born <28 completed weeks gestational age...
May 13, 2017: Neonatology
https://www.readbyqxmd.com/read/28494494/multifocal-erg-responses-in-subjects-with-a-history-of-preterm-birth
#13
Pablo Altschwager, Anne Moskowitz, Anne B Fulton, Ronald M Hansen
Purpose: The purpose of this study is to assess cone-mediated central retinal function in children with a history of preterm birth, including subjects with and without retinopathy of prematurity (ROP). The multifocal electroretinogram (mfERG) records activity of the postreceptor retinal circuitry. Methods: mfERG responses were recorded to an array of 103 hexagonal elements that subtended 43° around a central fixation target. The amplitude and latency of the first negative (N1) and first positive (P1) response were evaluated in six concentric rings centered on the fovea...
May 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28493433/highly-active-and-iso-selective-catalysts-for-rop-of-cyclic-esters-using-group-2-metal-initiators
#14
Tarun Kanti Panda, Jayeeta Bhattacharjee, A Harinath, Hari P Nayek, Alok Sarkar
A series of alkali and alkaline earth (Ae) metal complexes bearing 1,2 phenylene(bis-diphenylphosphinothioic/selenoic amide) [{Ph2P(E)NH}2C6H4] (E = S (1-H2); Se (2-H2) ligands are reported. Alkali metal complexes [{Ph2P(S)N}2C6H4]Na(THF)4 (3a) [{Ph2P(Se)N}2C6H4]Na(THF)4 (3b), and [{Ph2P(Se)N}2C6H4]K(THF)5 (4b) were obtained in good yield by treating protic ligand 1-H2 or 2-H2 with corresponding metal hexamethyldisilazides [MN(SiMe3)2] (M = Na and K) at ambient temperature. The Ae metal complexes formulated as [{Ph2P(E)N}2C6H4]M(THF)3 [E = S, M = Ca (5a), Sr (6a), Ba (7a); E = Se, M = Ca (5b), Sr (6b), Ba (7b)] can be synthesized using two routes...
May 11, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28491468/recurrence-of-retinopathy-of-prematurity-in-zone-ii-stage-3-after-ranibizumab-treatment-a-retrospective-study
#15
Qinrui Hu, Yujing Bai, Xiaoli Chen, Lvzhen Huang, Yi Chen, Xiaoxin Li
Objective. To determine the prevalence and risk factors for the recurrence of retinopathy of prematurity (ROP) in Zone II Stage 3+ after ranibizumab treatment. Methods. This was a retrospective, nonrandomized, noncontrolled study that excluded Zone I and aggressive posterior ROP (APROP) cases. Infants who developed Zone II Stage 3 ROP with plus disease and underwent initial intravitreal injection of ranibizumab (IVR) were recruited. Patients were divided into 2 groups based on the outcome after initial ranibizumab treatment: recurrence of ROP or favorable outcome...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28488706/impact-of-aryloxy-initiators-on-the-living-and-immortal-polymerization-of-lactide
#16
L-E Chile, T Ebrahimi, A Wong, D C Aluthge, S G Hatzikiriakos, P Mehrkhodavandi
This report describes two different methodologies for the synthesis of aryl end-functionalized poly(lactide)s (PLAs) catalyzed by indium complexes. In the first method, a series of para-functionalized phenoxy-bridged dinuclear indium complexes [(NNO)InCl]2(μ-Cl)(μ-OPhR) (R = OMe (1), Me (2), H (3), Br (4), NO2 (5)) were synthesized and fully characterized. The solution and solid state structures of these complexes reflect the electronic differences between these initiators. The polymerization rates correlate with the electron donating ability of the phenoxy initiators: the para-nitro substituted complex 5 is essentially inactive...
May 10, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28474015/highly-thermally-stable-and-robust-enantiopure-zirconium-nnn-scorpionates-for-the-controlled-ring-opening-polymerization-of-rac-lactide
#17
Antonio Otero, Juan Fernández-Baeza, Andrés Garcés, Luis F Sánchez-Barba, Agustín Lara-Sánchez, Jaime Martínez-Ferrer, María P Carrión, Ana M Rodríguez
A series of enantiopure alkoxide and thioalkoxide zirconium derivatives [Zr(ER)3(κ(3)-R,R-fbpza)] (1-6) (E = O, R = CHMe21, CHMeEt 2, CH2SiMe33, 2,6-C6H3Me24, 4-(t)BuPh 5; E = S, R = 4-(t)BuPh 6) has been prepared for use as thermally stable and robust initiators in the ROP of rac-lactide. The compounds were prepared by alcoholysis or thioalcoholysis of the tris(amide) precursor [Zr(NMe2)3(κ(3)-R,R-fbpza)] [R,R-fbpzaH = N-p-fluorophenyl-(1R)-1-[(1R)-6,6-dimethylbicyclo[3.1.1]-2-hepten-2-yl]-2,2-bis(3,5-dimethylpyrazol-1-yl)ethylamine] with ROH and ArEH (E = O, S) in a 1 : 3 molar ratio...
May 5, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28465833/asymmetric-outcomes-of-type-1-retinopathy-of-prematurity-after-bilateral-intravitreal-ranibizumab-treatment
#18
Qiujing Huang, Qi Zhang, Yu Xu, Xunda Ji, Ping Fei, Jie Peng, Yi-An Li, Peiquan Zhao
Purpose. To present cases with retinopathy of prematurity (ROP), who were treated with intravitreal injection of ranibizumab (IVR) and had unpredictable asymmetric outcomes. Methods. A retrospective review was performed in infants with type 1 ROP and had bilateral IVR (0.25 mg/0.025 mL) as initial treatment. Patients were classified into the asymmetric outcome group and the symmetric outcome group. Results. Eighty-four patients (168 eyes) were included. There were 18 eyes of 9 patients (10.7%) in the asymmetric outcome group and 150 eyes of 75 patients (89...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28465303/epidemiology-of-blindness-in-children
#19
REVIEW
Ameenat Lola Solebo, Lucinda Teoh, Jugnoo Rahi
An estimated 14 million of the world's children are blind. A blind child is more likely to live in socioeconomic deprivation, to be more frequently hospitalised during childhood and to die in childhood than a child not living with blindness. This update of a previous review on childhood visual impairment focuses on emerging therapies for children with severe visual disability (severe visual impairment and blindness or SVI/BL).For children in higher income countries, cerebral visual impairment and optic nerve anomalies remain the most common causes of SVI/BL, while retinopathy of prematurity (ROP) and cataract are now the most common avoidable causes...
May 2, 2017: Archives of Disease in Childhood
https://www.readbyqxmd.com/read/28450043/anterior-chamber-angle-and-anterior-segment-structure-of-eyes-in-children-with-early-stages-of-retinopathy-of-prematurity
#20
Shirley Hl Chang, Yung-Sung Lee, Shiu-Chen Wu, Lai-Chu See, Chia-Chi Chung, Meng-Lin Yang, Chi-Chun Lai, Wei-Chi Wu
PURPOSE: To compare structural differences in the anterior chamber angle (ACA) and related optic components in children with or without retinopathy of prematurity (ROP). DESIGN: Prospective cross-sectional study. METHODS: Setting: A referred medical center in Taiwan. STUDY POPULATION: The patients included preterm children with a history of ROP who had undergone laser therapy. The controls included age-matched healthy full-term children...
April 24, 2017: American Journal of Ophthalmology
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