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Douglas koch

Bruna V Ventura, Marcelo C Ventura, Li Wang, Douglas D Koch, Mitchell P Weikert
PURPOSE: To compare biometry measurements and intraocular lens (IOL) power calculations obtained by a new optical A-scan interferometer biometer (Galilei G6) (new biometer) and a partial coherence interferometer biometer (IOLMaster 500) (reference biometer). SETTING: Private practice, Recife, Brazil. DESIGN: Retrospective comparative study. METHODS: Cataract patients who had biometric measurements with the new biometer and the reference biometer were included in the study...
January 2017: Journal of Cataract and Refractive Surgery
Greg Brunin, Khurrum Khan, Kristin S Biggerstaff, Li Wang, Douglas D Koch, Sumitra S Khandelwal
PURPOSE: To compare intraoperative factors and post-operative outcomes of femtosecond laser-assisted cataract surgery (FLACS) and manual cataract surgery performed by resident surgeons. METHODS: All cases of FLACS performed by resident surgeons during the 2013-2014 academic year were compared to a control group of manual cataract surgery cases with regards to pre-operative patient data, operative complications, cumulative dissipated energy (CDE), postoperative corrected distance visual acuity (CDVA), refractive prediction error (RPE), and corneal edema...
January 31, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
William J Dupps, Thomas Kohnen, Nick Mamalis, Sathish Srinivasan, Emanuel S Rosen, Douglas D Koch, Stephen A Obstbaum
No abstract text is available yet for this article.
December 2016: Journal of Cataract and Refractive Surgery
Laurel A Grisanti, Christopher J Traynham, Ashley A Repas, Erhe Gao, Walter J Koch, Douglas G Tilley
Following cardiac injury, early immune cell responses are essential for initiating cardiac remodeling and tissue repair. We previously demonstrated the importance of β2-adrenergic receptors (β2ARs) in the regulation of immune cell localization following acute cardiac injury, with deficient leukocyte infiltration into the damaged heart. The purpose of this study was to investigate the mechanism by which immune cell-expressed β2ARs regulate leukocyte recruitment to the heart following acute cardiac injury...
December 27, 2016: Proceedings of the National Academy of Sciences of the United States of America
Ramon Casanova, Xinhui Wang, Jeanette Reyes, Yasuyuki Akita, Marc L Serre, William Vizuete, Helena C Chui, Ira Driscoll, Susan M Resnick, Mark A Espeland, Jiu-Chiuan Chen
Objective: Exposure to ambient fine particulate matter (PM2.5: PM with aerodynamic diameters < 2.5 μm) has been linked with cognitive deficits in older adults. Using fine-grained voxel-wise analyses, we examined whether PM2.5 exposure also affects brain structure. Methods: Brain MRI data were obtained from 1365 women (aged 71-89) in the Women's Health Initiative Memory Study and local brain volumes were estimated using RAVENS (regional analysis of volumes in normalized space). Based on geocoded residential locations and air monitoring data from the U...
2016: Frontiers in Human Neuroscience
Louis R Pasquale, Hugues Aschard, Jae H Kang, Jessica N Cooke Bailey, Sara Lindström, Daniel I Chasman, William G Christen, R Rand Allingham, Allison Ashley-Koch, Richard K Lee, Sayoko E Moroi, Murray H Brilliant, Gadi Wollstein, Joel S Schuman, John Fingert, Donald L Budenz, Tony Realini, Terry Gaasterland, Douglas Gaasterland, William K Scott, Kuldev Singh, Arthur J Sit, Robert P Igo, Yeunjoo E Song, Lisa Hark, Robert Ritch, Douglas J Rhee, Vikas Gulati, Shane Havens, Douglas Vollrath, Donald J Zack, Felipe Medeiros, Robert N Weinreb, Margaret A Pericak-Vance, Yutao Liu, Peter Kraft, Julia E Richards, Bernard A Rosner, Michael A Hauser, Jonathan L Haines, Janey L Wiggs
OBJECTIVE: Several attributes of female reproductive history, including age at natural menopause (ANM), have been related to primary open-angle glaucoma (POAG). We assembled 18 previously reported common genetic variants that predict ANM to determine their association with ANM or POAG. METHODS: Using data from the Nurses' Health Study (7,143 women), we validated the ANM weighted genetic risk score in relation to self-reported ANM. Subsequently, to assess the relation with POAG, we used data from 2,160 female POAG cases and 29,110 controls in the National Eye Institute Glaucoma Human Genetics Collaboration Heritable Overall Operational Database (NEIGHBORHOOD), which consists of 8 datasets with imputed genotypes to 5...
February 2017: Menopause: the Journal of the North American Menopause Society
Viviane Zeringóta, Ralph Maturano, Hermes Ribeiro Luz, Tatiane Oliveira Souza Senra, Erik Daemon, João Luiz Horacio Faccini, Douglas McIntosh
The current study evaluated parasitism of wild birds by ticks in a fragment of Atlantic Forest in the state of Minas Gerais, Brazil, and examined the ticks for rickettsial agents. Birds were captured during 2014 and 2015 and ticks were identified by sequencing fragments of the 16S and 12S ribosomal DNA. Among 260 birds representing 19 families and 52 species, a total of 69 (26.5%) were found to be infested by larvae (LL) and/or nymphs (NN) of Amblyomma longirostre (Koch, 1844) (45 LL, 4 NN), Amblyomma calcaratum Neumann, 1899 (9 LL, 15 NN), Amblyomma nodosum Neumann, 1899 (2 NN), Amblyomma parkeri Fonseca and Aragão, 1952 (21 LL), Amblyomma sp...
January 2017: Ticks and Tick-borne Diseases
Melissa A Wasilewski, Laurel A Grisanti, Jianliang Song, Rhonda L Carter, Ashley A Repas, Valerie D Myers, Erhe Gao, Walter J Koch, Joseph Y Cheung, Arthur M Feldman, Douglas Tilley
V1AR expression is elevated in chronic human heart failure and contributes to cardiac dysfunction in animal models, in part via reduced βAR responsiveness.  While cardiac V1AR overexpression and V1AR stimulation are each sufficient to decrease βAR activity, it is unknown whether V1AR inhibition conversely augments βAR responsiveness.  Further, although V1AR has been shown to contribute to chronic progression of heart failure, its impact on cardiac function following acute ischemic injury has not been reported...
September 2, 2016: Clinical Science (1979-)
Benjamin P Woodall, Meryl C Woodall, Timothy S Luongo, Laurel A Grisanti, Douglas G Tilley, John W Elrod, Walter J Koch
GRK2, a G protein-coupled receptor kinase, plays a critical role in cardiac physiology. Adrenergic receptors are the primary target for GRK2 activity in the heart; phosphorylation by GRK2 leads to desensitization of these receptors. As such, levels of GRK2 activity in the heart directly correlate with cardiac contractile function. Furthermore, increased expression of GRK2 after cardiac insult exacerbates injury and speeds progression to heart failure. Despite the importance of this kinase in both the physiology and pathophysiology of the heart, relatively little is known about the role of GRK2 in skeletal muscle function and disease...
October 14, 2016: Journal of Biological Chemistry
Douglas D Koch
PURPOSE: To review the progress and challenges in obtaining accurate corneal power measurements for intraocular lens (IOL) calculations. DESIGN: Personal perspective, review of literature, case presentations, and personal data. METHODS: Through literature review findings, case presentations, and data from the author's center, the types of corneal measurement errors that can occur in IOL calculation are categorized and described, along with discussion of future options to improve accuracy...
November 2016: American Journal of Ophthalmology
Li Wang, Suhua Zhang, Zhe Zhang, Douglas D Koch, Yading Jia, Weifang Cao, Xiaoyan Li
PURPOSE: To evaluate the effectiveness of femtosecond laser penetrating corneal relaxing incisions (CRIs) in reducing corneal astigmatism during cataract surgery. SETTING: Shanxi Eye Hospital, Taiyuan, Shanxi Province, China. DESIGN: Prospective case series. METHODS: Using the Lensx laser, CRIs were placed at a diameter of 8.0 mm with a depth of 90%. Corneal astigmatism was measured before surgery and 1 and 3 months after surgery...
July 2016: Journal of Cataract and Refractive Surgery
Jeffrey Whitman, John Hovanesian, Roger F Steinert, Douglas Koch, Richard Potvin
PURPOSE: To evaluate improvement in the through-focus acuity and visual function provided by a corneal inlay designed to modify the surface shape of the central cornea. SETTING: Two clinical practices, United States. DESIGN: Prospective nonrandomized clinical trial. METHODS: Emmetropic patients with presbyopia who required a reading addition (add) from +1.50 to +2.00 diopters (D) had implantation of the Raindrop Near Vision Inlay in the nondominant eye...
July 2016: Journal of Cataract and Refractive Surgery
Jack X Ma, Maolong Tang, Li Wang, Mitchell P Weikert, David Huang, Douglas D Koch
PURPOSE: To evaluate the accuracy of the optical coherence tomography-based (OCT formula) and Barrett True K (True K) intraocular lens (IOL) calculation formulas in eyes with previous radial keratotomy (RK). METHODS: In 95 eyes of 65 patients, using the actual refraction following cataract surgery as target refraction, the predicted IOL power for each method was calculated. The IOL prediction error (PE) was obtained by subtracting the predicted IOL power from the implanted IOL power...
July 1, 2016: Investigative Ophthalmology & Visual Science
Britta K Hölzel, Vincent Brunsch, Tim Gard, Douglas N Greve, Kathrin Koch, Christian Sorg, Sara W Lazar, Mohammed R Milad
Mindfulness has been suggested to impact emotional learning, but research on these processes is scarce. The classical fear conditioning/extinction/extinction retention paradigm is a well-known method for assessing emotional learning. The present study tested the impact of mindfulness training on fear conditioning and extinction memory and further investigated whether changes in white matter fiber tracts might support such changes. The uncinate fasciculus (UNC) was of particular interest in the context of emotional learning...
2016: Frontiers in Behavioral Neuroscience
Thomas Kohnen, Nick Mamalis, William J Dupps, Sathish Srinivasan, Douglas D Koch, Stephen A Obstbaum, Emanuel Rosen
No abstract text is available yet for this article.
June 2016: Journal of Cataract and Refractive Surgery
Laurel A Grisanti, Anna M Gumpert, Christopher J Traynham, Joshua E Gorsky, Ashley A Repas, Erhe Gao, Rhonda L Carter, Daohai Yu, John W Calvert, Andrés Pun García, Borja Ibáñez, Joseph E Rabinowitz, Walter J Koch, Douglas G Tilley
BACKGROUND: Immune cell-mediated inflammation is an essential process for mounting a repair response after myocardial infarction (MI). The sympathetic nervous system is known to regulate immune system function through β-adrenergic receptors (βARs); however, their role in regulating immune cell responses to acute cardiac injury is unknown. METHODS: Wild-type (WT) mice were irradiated followed by isoform-specific βAR knockout (βARKO) or WT bone-marrow transplantation (BMT) and after full reconstitution underwent MI surgery...
July 12, 2016: Circulation
Richard Carr, Justin Schilling, Jianliang Song, Rhonda L Carter, Yang Du, Sungsoo M Yoo, Christopher J Traynham, Walter J Koch, Joseph Y Cheung, Douglas G Tilley, Jeffrey L Benovic
β-adrenergic receptors (βARs) are critical regulators of acute cardiovascular physiology. In response to elevated catecholamine stimulation during development of congestive heart failure (CHF), chronic activation of Gs-dependent β1AR and Gi-dependent β2AR pathways leads to enhanced cardiomyocyte death, reduced β1AR expression, and decreased inotropic reserve. β-blockers act to block excessive catecholamine stimulation of βARs to decrease cellular apoptotic signaling and normalize β1AR expression and inotropy...
July 12, 2016: Proceedings of the National Academy of Sciences of the United States of America
Ildamaris Montes de Oca, Sabite E Gökce, Katie Hallahan, Li Wang, Douglas D Koch
No abstract text is available yet for this article.
2016: International Ophthalmology Clinics
Adi Abulafia, Douglas D Koch, Li Wang, Warren E Hill, Ehud I Assia, Maria Franchina, Graham D Barrett
PURPOSE: To evaluate and compare the accuracy of 2 toric intraocular lens (IOL) calculators with or without a new regression formula. SETTING: Ein-Tal Eye Center, Tel-Aviv, Israel, and the Lions Eye Institute, Nedlands, Western Australia, Australia. DESIGN: Retrospective case series. METHODS: A new regression formula (Abulafia-Koch) was developed to calculate the estimated total corneal astigmatism based on standard keratometry measurements...
May 2016: Journal of Cataract and Refractive Surgery
Ildamaris Montes de Oca, Eric J Kim, Li Wang, Mitchell P Weikert, Sumitra S Khandelwal, Zaina Al-Mohtaseb, Douglas D Koch
PURPOSE: To evaluate the accuracy of toric intraocular lens (IOL) alignment in femtosecond laser-assisted cataract surgery using the Truevision 3-dimensional (3-D) computer-guided visualization system compared with a manual marking method. SETTING: Cullen Eye Institute, Baylor College of Medicine, Houston, Texas, USA. DESIGN: Retrospective comparative case series. METHODS: Preoperatively, all patients had corneal topography measurements with a color light-emitting diode topographer...
April 2016: Journal of Cataract and Refractive Surgery
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