keyword
MENU ▼
Read by QxMD icon Read
search

Lenticular

keyword
https://www.readbyqxmd.com/read/27919335/cataractogenesis-following-high-let-radiation-exposure
#1
Nobuyuki Hamada, Tatsuhiko Sato
Biological effectiveness of ionizing radiation differs with its linear energy transfer (LET) such that high-LET radiation is more effective for various biological endpoints than low-LET radiation. Human exposure to high-LET radiation occurs in cancer patients, nuclear workers, aviators, astronauts and other space travellers. From the radiation protection viewpoint, the ocular lens is among the most radiosensitive tissues in the body, and cataract (a clouding of the normally transparent lens) is classified as tissue reactions (formerly called nonstochastic or deterministic effects) with a threshold below which no effect would occur...
October 2016: Mutation Research
https://www.readbyqxmd.com/read/27916313/influence-of-the-flap-on-outcomes-in-corneal-refractive-surgery-with-femtosecond-laser-smile-vs-flex
#2
J L Alió, M El Bahrawy, A Angelov, D Ortiz, P Yébana
OBJECTIVE: To investigate the influence of creating a flap on the postoperative optical quality of the cornea in terms of predicted corneal curvature and Seidel aberrations after 2 modalities of femtosecond assisted corneal lenticule extraction laser for the correction of myopia and myopic astigmatism: The flapless procedure small incision lenticular extraction (SMILE) and the flap-based femtosecond lenticular extraction (FLEx). METHODS: The study is a prospective consecutive non-randomised comparative interventional case series including 64 eyes with myopic or myopic astigmatism refractive errors...
December 1, 2016: Archivos de la Sociedad Española de Oftalmología
https://www.readbyqxmd.com/read/27911425/-biometric-parameters-of-vitrectomized-eyes
#3
S V Asatryan, V K Surguch, S I Kharlap, T A Shchegoleva
AIM: To analyze changes in various biometric parameters after vitrectomy. MATERIAL AND METHODS: A total of 50 patients (50 eyes) were followed up. All of them underwent vitrectomy for idiopathic epiretinal fibrosis and macular hole. In addition to the standard ophthalmic examination, we performed a combined ultrasound study and ultrasound biomicroscopy before and after the surgery (at 2-3 weeks and 6 months). Variation statistics was applied to assess the results using the SPSS Statistica 20 software...
2016: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/27885765/conversion-of-native-24-mer-ferritin-nanocage-into-its-non-native-16-mer-analogue-by-insertion-of-extra-amino-acid-residues
#4
Shengli Zhang, Jiachen Zang, Wenming Wang, Hai Chen, Xiaorong Zhang, Fudi Wang, Hongfei Wang, Guanghua Zhao
Protein assemblies with high symmetry are widely distributed in nature. Most efforts so far have focused on repurposing these protein assemblies, a strategy that is ultimately limited by the structures available. To overcome this limitation, methods for fabricating novel self-assembling proteins have received intensive interest. Herein, by reengineering the key subunit interfaces of native 24-mer protein cage with octahedral symmetry through amino acid residues insertion, we fabricated a 16-mer lenticular nanocage whose structure is unique among all known protein cages...
November 25, 2016: Angewandte Chemie
https://www.readbyqxmd.com/read/27863741/shear-targeted-drug-delivery-to-stenotic-blood-vessels
#5
Mark Epshtein, Netanel Korin
In this review we focus on shear targeted drug delivery as a novel strategy to selectively deliver drugs to sites of vascular obstruction. We review the physics of stenotic (abnormally narrowed) blood vessels, while focusing mainly on the hemodynamics and transport phenomena at these sites. We then discuss how the local abnormal levels of shear stress, which can mechanically activate platelets, can be leveraged for localized drug delivery. We describe the development of Shear Activated Nano-particle Aggregates (SA-NPAs) that are designed to release and localize their nanoparticle drug carriers at sites of vascular stenosis...
November 11, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27843230/preclinical-cataract-masquerading-as-post-lasik-regression
#6
Rohit Shetty, Nikhil Negalur, Mathew Kurian, Rushad Shroff
The purpose of this case report is to bring forth a rare clinical scenario where preclinical cataract mimics post-LASIK regression and to describe the role of aberrometry in detecting higher order aberrations (HOAs) and early lens changes. A 36-year-old female presented with blurring of vision since 1 year after having undergone an uneventful LASIK surgery 3 years prior. Corneal topography and aberrometry were within normal limits. Although the lens was morphologically normal on slit lamp examination, increased HOAs and lenticular density were detected...
September 2016: Oman Journal of Ophthalmology
https://www.readbyqxmd.com/read/27821692/combining-footwear-with-public-health-iconography-to-prevent-soil-transmitted-helminth-infections
#7
Sarah B Paige, Sagan Friant, Lucie Clech, Carly Malavé, Catherine Kemigabo, Richard Obeti, Tony L Goldberg
Shoes are effective for blocking soil-transmitted helminths (STHs) that penetrate the skin. Unfortunately, shoe-wearing is uncommon in many areas where STHs are prevalent, in part because local populations are unaware of the health benefits of wearing shoes. This is especially true in low-literacy populations, where information dissemination through written m essages is not possible. We launched a public health intervention that combines a public health image with sandals. The image is a "lenticular image" that combines two alternating pictures to depict the efficacy of shoes for preventing STH infection...
November 7, 2016: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/27810790/evaluation-of-decreased-uptake-of-18f-fluorodeoxyglucose-in-the-cerebral-cortex-of-patients-with-intracranial-non-hodgkin-s-lymphoma-lesions-through-pet-ct
#8
Qingbo Zhang, Tian Tian, Li Wang, Hongxia Qiu, Danming Li
BACKGROUND: This study aims to investigate whether basal ganglia can be utilised as reference for measuring ratios between standardised uptake values (SUV), namely, SUVmax and SUVmean, of 18F-fluoro-deoxyglucose (18F-FDG) uptake, in the ipsilateral cerebral cortex and basal ganglia of patients with non-Hodgkin's lymphoma lesions. METHODS: Fifty-three patients with pathologically confirmed highly metabolic non-Hodgkin's lymphoma were retrospectively analysed; these patients were subjected to treatment strategy and underwent positron emission tomography/computed tomography (PET/CT)...
October 31, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27789327/chronic-administration-of-ethanol-leaf-extract-of-moringa-oleifera-lam-moringaceae-may-compromise-glycaemic-efficacy-of-sitagliptin-with-no-significant-effect-in-retinopathy-in-a-diabetic-rat-model
#9
Comfort Olurishe, Helen Kwanashie, Abdulkadiri Zezi, Nuhu Danjuma, Bisalla Mohammed
ETHNOPHARMACOLOGICAL RELEVANCE: Moringa oleifera Lam. (Moringaceae) has gained awareness for its antidiabetic effect, and is used as alternative therapy or concurrently with orthodox medicines such as sitagliptin in diabetes mellitus. This is without ascertaining the possibility of drug-herb interactions, which could either lead to enhanced antidiabetic efficacy, increased toxicity, or compromised glycaemic control with negative consequence in diabetic retinopathy. AIM OF THE STUDY: To investigate the effect, of sitagliptin (50mg/kg), Moringa oleifera (300mg/kg) leaf extract, and a combination of both on glycaemic control parameters, lenticular opacity and changes in retinal microvasculature in alloxan (150mg/kg i...
October 24, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27770229/whole-brain-analysis-of-postmortem-density-changes-of-grey-and-white-matter-on-computed-tomography-by-statistical-parametric-mapping
#10
Yuichi Nishiyama, Hidekazu Kanayama, Hiroshi Mori, Keiji Tada, Yasushi Yamamoto, Takashi Katsube, Haruo Takeshita, Kazunori Kawakami, Hajime Kitagaki
OBJECTIVES: This study examined the usefulness of statistical parametric mapping (SPM) for investigating postmortem changes on brain computed tomography (CT). METHODS: This retrospective study included 128 patients (23 - 100 years old) without cerebral abnormalities who underwent unenhanced brain CT before and after death. The antemortem CT (AMCT) scans and postmortem CT (PMCT) scans were spatially normalized using our original brain CT template, and postmortem changes of CT values (in Hounsfield units; HU) were analysed by the SPM technique...
October 21, 2016: European Radiology
https://www.readbyqxmd.com/read/27744053/olmesartan-an-angiotensin-ii-receptor-blocker-inhibits-the-progression-of-cataract-formation-in-cadmium-chloride-induced-hypertensive-albino-rats
#11
Rajesh Choudhary, Surendra H Bodakhe
AIMS: Previously we found that cadmium chloride (CdCl2) exposure substantially elevates hypertension and potentiates cataract formation. In the present study, we investigated the protective effects of olmesartan, an angiotensin II receptor blocker against cataractogenesis in the CdCl2-induced hypertensive animal model. MAIN METHODS: Male Sprague-Dawley albino rats (150-180g) were randomly selected and assigned to four groups (n=6). Among the four groups, one group (normal) received 0...
October 12, 2016: Life Sciences
https://www.readbyqxmd.com/read/27728893/magnesium-taurate-prevents-cataractogenesis-via-restoration-of-lenticular-oxidative-damage-and-atpase-function-in-cadmium-chloride-induced-hypertensive-experimental-animals
#12
Rajesh Choudhary, Surendra H Bodakhe
Previously we found that hypertension potentiates the risk the cataractogenesis. In the present study, we investigated the protective effects of magnesium taurate (MgT) on hypertension and associated lenticular damages against cadmium chloride (CdCl2)-induced hypertensive animals. Male Sprague-Dawley albino rats (150-180g) were assigned to five experimental groups (n=6). Among the five groups, normal group received 0.3% carboxymethyl cellulose (10ml/kg/day, p.o.). Hypertension control group received CdCl2 (0...
October 8, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27721986/a-combination-of-intrastromal-and-intracameral-injections-of-amphotericin-b-in-the-treatment-of-severe-fungal-keratitis
#13
Jianzhang Hu, Jingjin Zhang, Yanling Li, Xiaoli Han, Weidong Zheng, Juan Yang, Guoxing Xu
Purpose. To evaluate the efficacy of a combination of intrastromal and intracameral injections of amphotericin B in the treatment of severe recalcitrant fungal keratitis. Methods. Patients with severe fungal keratitis who were resistant to conventional antifungal medical treatments and needed potential surgical intervention were recruited at the First Affiliated Hospital of Fujian Medical University between January 2012 and July 2013. The patients were treated with a combination of intrastromal and intracameral injections of amphotericin B (25 μg/mL and 50 μg/mL, resp...
2016: Journal of Ophthalmology
https://www.readbyqxmd.com/read/27701637/anterior-corneal-posterior-corneal-and-lenticular-contributions-to-ocular-aberrations
#14
David A Atchison, Marwan Suheimat, Ankit Mathur, Lucas J Lister, Jos Rozema
Purpose: To determine the corneal surfaces and lens contributions to ocular aberrations. Methods: There were 61 healthy participants with ages ranging from 20 to 55 years and refractions -8.25 diopters (D) to +3.25 D. Anterior and posterior corneal topographies were obtained with an Oculus Pentacam, and ocular aberrations were obtained with an iTrace aberrometer. Raytracing through models of corneas provided total corneal and surface component aberrations for 5-mm-diameter pupils...
October 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27697241/white-ring-sign-for-uneventful-lenticule-separation-in-small-incision-lenticule-extraction
#15
Soosan Jacob, Ashiyana Nariani, Michele Figus, Amar Agarwal, Athiya Agarwal
: We describe the white ring sign, which differentiates the posterior and anterior lenticular planes in small-incision lenticule extraction. The sign identifies the plane of dissection by the anteroposterior relationship between the dissecting instrument and the circular white light reflected from the lenticular side cut. Differentiating the planes enables the surgeon to dissect the anterior plane before the posterior plane, which facilitates smooth lenticule extraction and prevents complications such as cap tears, partial lenticule dissection, and a torn lenticule...
September 2016: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/27672447/corneal-epithelial-remodeling-and-its-effect-on-corneal-asphericity-after-transepithelial-photorefractive-keratectomy-for-myopia
#16
Jie Hou, Yan Wang, Yulin Lei, Xiuyun Zheng, Ying Zhang
Purpose. To evaluate the changes in epithelial thickness profile following transepithelial photorefractive keratectomy (T-PRK) for myopia and to investigate the effect of epithelial remodeling on corneal asphericity. Methods. Forty-four patients (44 right eyes) who underwent T-PRK were retrospectively evaluated. Epithelial thickness was measured using spectral-domain optical coherence tomography at different corneal zones (central, 2 mm; paracentral, 2-5 mm; and mid-peripheral, 5-6 mm) preoperatively and at 1 week and 1, 3, and 6 months postoperatively...
2016: Journal of Ophthalmology
https://www.readbyqxmd.com/read/27642106/transcranial-sonography-of-subcortical-structures-in-patients-with-multiple-sclerosis
#17
P Puz, A Lasek-Bal, P Radecka
BACKGROUND: Transcranial sonography may be applied to assess the basal ganglia nuclei and brain atrophy by the measurement of the width of the third ventricle. The aim of this study was to assess usefulness of transcranial sonography (TCS) in patients with multiple sclerosis (MS) by examining the echogenicity of subcortical structures and the width of the third ventricle. METHOD: Transcranial sonography evaluation of substantia nigra, brain stem raphe nuclei, diameter of the third ventricle, width of the anterior horn of the lateral ventricle, thalamus, lenticular nucleus, and head of the caudate nucleus in 41 patients with relapsing-remitting MS (RRMS), 23 with secondary progressive MS (SPMS), and 20 healthy controls was compared...
September 18, 2016: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/27626144/oxidative-stress-of-crystalline-lens-in-rat-menopausal-model
#18
Semra Acer, Gökhan Pekel, Vural Küçükatay, Aysun Karabulut, Ramazan Yağcı, Ebru Nevin Çetin, Şahika Pınar Akyer, Barbaros Şahin
PURPOSE: To evaluate lenticular oxidative stress in rat menopausal models. METHODS: Forty Wistar female albino rats were included in this study. A total of thirty rats underwent oophorectomy to generate a menopausal model. Ten rats that did not undergo oophorectomy formed the control group (Group 1). From the rats that underwent oophorectomy, 10 formed the menopause control group (Group 2), 10 were administered a daily injection of methylprednisolone until the end of the study (Group 3), and the remaining 10 rats were administered intraperitoneal streptozocin to induce diabetes mellitus (Group 4)...
July 2016: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/27624171/comparison-of-ultrasound-biomicroscopy-and-ultrasonographic-parameters-in-eyes-with-phacomorphic-glaucoma-and-eyes-with-mature-cataract
#19
Sujata Subbiah, Philip A Thomas, C A Nelson Jesudasan
PURPOSE: To compare data on anatomical and biometric parameters, and their combination, obtained by using ultrasound biomicroscopy (UBM) and A-scan in eyes with phacomorphic glaucoma (PG) and eyes with mature cataract and to determine differences that may predispose to development of PG. METHODS: Eighty patients (80 eyes) were enrolled in this cross-sectional study. Anterior chamber parameters, namely anterior chamber depth (ACD), angle-opening distance (AOD), iris-lens contact distance (ILCD), and trabecular-ciliary process distance (TCPD), among other parameters, were assessed by UBM (35 MHz), while axial length (AL) and lenticular thickness (LT) were determined by A-scan biometry...
September 13, 2016: International Ophthalmology
https://www.readbyqxmd.com/read/27615412/immunohistochemical-localization-of-somatostatin-in-the-brain-of-chinese-alligator-alligator-sinensis
#20
Huan Wang, Ruidong Zhang, Shengzhou Zhang, Yongkang Zhou, Xiaobing Wu
In this study, the regional distribution and histological localization of somatostatin (SS) immunoreactive (IR) perikarya and fibers was investigated for the first time in the brain of adult Chinese alligator by immunohistochemical method. The results showed SS-IR perikarya and fibers were widely distributed in various parts of the brain except for olfactory bulbs. In the telencephalon, SS-IR perikarya were predominantly located in the cellular layer and deep plexiform layer of dorsomedial and medial cortex, less in the dorsal and lateral cortex, while SS-IR fibers were found in all layers of the cerebral cortex...
September 12, 2016: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
keyword
keyword
102691
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"